JP2019073108A - Electric vehicle - Google Patents

Abstract

To provide an electric vehicle in which batteries can be easily replaced.SOLUTION: An electric vehicle 1 comprises: a vehicle body 2; a motor 7 driving front wheels 4L and 4R; two replaceable batteries 20 and 20 for driving at least the motor 7; and two pallets 110 and 110 on which the batteries 20 and 20 are individually placed, and which can be handled with a fork part 310 of a hand forklift 300. The pallets 110 on which the batteries 20 are placed are disposed in a right and left width direction of the vehicle body 2. Further in the electric vehicle 1, openings 201L and 201R are arranged on both right and left sides of the vehicle body 2, that allow the pallets 110 on which the batteries 20 are placed to be taken out from the vehicle body 2 using the fork part 310, and stored in the vehicle body 2 using the fork part 310.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electric vehicle.

  2. Description of the Related Art Conventionally, an electric car equipped with a battery as a power source is known, and there are a battery exchange system and a quick charge system for the battery.

  In a conventional battery-replacement type electric vehicle, a battery whose charge amount is less than a predetermined amount is removed from the vehicle body at a battery exchange site, and another battery which has been charged in advance is attached.

  A conventional quick charge system electric vehicle (see, for example, Patent Document 1) charges the battery at the quick charge stand without removing the battery, and the battery is used for efficient cooling using air flow or the like. It is divided and fixed inside the vehicle body.

Unexamined-Japanese-Patent No. 2013-171662

  However, such battery replacement work in the conventional battery-replacement type electric vehicle is that the battery is heavy (for example, about 300 kg) and is mounted in a generally invisible place under the vehicle body. There is a problem that removal and attachment are not easy.

  An object of the present invention is to provide an electric vehicle which can be easily replaced in view of the above-mentioned problems in the conventional battery exchange type electric vehicle.

The first invention is
With the car body,
A motor provided on the vehicle body for driving traveling wheels;
At least a plurality of replaceable batteries for driving the motor;
A plurality of battery mounting members for individually mounting the plurality of batteries, each having a function of a pallet that can be handled by a fork unit of a cargo handling device;
An electric car equipped with
The battery mounting member on which the battery is mounted is disposed in the lateral width direction of the vehicle body,
On the left and right sides of the vehicle body, the battery mounting member on which the battery is placed can be removed from the vehicle body by the fork portion, and an opening portion which can be stored in the vehicle body by the fork portion is provided. It is an electric car characterized by

The second invention of the present invention is
The plurality of batteries are two batteries,
One of the two batteries is disposed at the opening on one side of the openings provided on the left and right sides of the vehicle body in a state of being mounted on the battery mounting member And the other battery of the two batteries is mounted on the battery mounting member at the other opening of the openings provided on the left and right sides of the vehicle body Are placed at
And a transport unit provided on the vehicle body that can transport the battery mounting member on which the battery is placed to either the left side or the right side of the vehicle body,
The transport unit is capable of transporting the battery mounting member on which the battery placed in the opening on the other side is placed to the opening on the one side. It is an electric vehicle of the present invention.

The third invention of the present invention is
The transport unit includes a transport belt on which the battery mounting member is placed, and a drive roller capable of driving the transport belt in any of the left and right directions of the vehicle body.
In the electric vehicle according to the second aspect of the present invention, the drive force from the motor can be switched to the drive roller side.

The fourth invention of the present invention is
The vehicle body is provided with a storage case for storing the battery mounting member on which the battery is mounted,
The said battery mounting member is directly mounted in the bottom face part of the said storage case, It is an electric vehicle of the said 1st this invention characterized by the above-mentioned.

The fifth invention of the present invention is
The electric vehicle according to any one of the first to fourth aspects of the present invention, wherein the battery and the battery mounting member are integrally configured.

  ADVANTAGE OF THE INVENTION According to this invention, it is effective in the ability to provide the electric vehicle which can perform replacement | exchange of a battery easily.

FIG. 1 is a schematic left side view of an electric vehicle with a transfer device according to a first embodiment of the present invention. A schematic plan view of the electric vehicle of FIG. 1 The schematic perspective view of the principal part of the battery exchange mechanism in the electric vehicle of the first embodiment Control block diagram relating to battery replacement work of the electric vehicle according to the first embodiment Schematic plan view schematically showing replacement work of the battery in the electric vehicle of the first embodiment Schematic side view of a hand forklift A schematic plan view of a second electric vehicle according to Embodiment 2 of the present invention Schematic plan view showing a third electric vehicle provided with a transmission switching mechanism A schematic plan view of a fourth electric vehicle provided with a carrier dedicated motor for driving only the drive roller of the carrier in addition to the motor for driving the left and right axles A schematic left side view of a fifth electric vehicle as another example of the electric vehicle of the present invention In the electric vehicle described in the first embodiment, a schematic side view schematically showing a state in which an integrated battery in which a battery and a pallet are integrated are placed on a transport device

Hereinafter, embodiments of the electric vehicle of the present invention will be described with reference to the drawings.
Embodiment 1
In the first embodiment, an electric vehicle 1 provided with a transfer device 120 capable of transferring a battery to either the left or right side will be described.

  FIG. 1 is a schematic left side view of an electric vehicle 1 according to an embodiment of the present invention, and FIG. 2 is a schematic plan view of the electric vehicle 1 of FIG.

  Moreover, FIG. 3 is a schematic perspective view of the main part of the battery exchange mechanism 100 in the electric vehicle 1 of the present embodiment.

  As shown in FIGS. 1 and 2, the electric vehicle 1 according to the present embodiment includes (1) a vehicle body 2 and (2) a main frame 3 having a substantially rectangular shape in plan view, which forms a skeleton of the vehicle body 2; (3) A pair of left and right front wheels 4L and 4R as drive wheels, (4) A pair of left and right rear wheels 5L and 5R as driven wheels, (5) steering handle 6, (6) motor 7 as a drive source And (7) two replaceable batteries 20 and 20 of the same shape that supply power to the drive unit 8 via the left power cable 9L and the right power cable 9R. (8) Battery exchange mechanism 100, (9) Power transmission unit 11 incorporating a differential mechanism for transmitting the driving force from the motor 7 to the front wheels 4L, 4R via the left and right axles 10L, 10R, (10) Seat 12 mounted on front and back A floor panel 13 which is provided with a, and (11) left and right sides of the front and later respectively arranged door (not shown).

  Further, the two batteries 20 are electrically connected in parallel to the drive unit 8.

  Further, as shown in FIG. 2, the main frame 3 is composed of a front frame 3A, a rear frame 3B, a left side frame 3L, a right side frame 3R, a center front frame 3Ca and a center rear frame 3Cb.

  Further, two batteries 20, 20 having the same shape and the same size are placed on the upper surface of the pallet 110 to be described later, and in the storage case 200 to be described later, so that the weight balance in the lateral width direction of the electric vehicle 1 becomes uniform. , Are arranged side by side in the lateral width direction of the vehicle body 2 (see FIG. 2). The right side surface of the pallet 110 disposed on the right side in the lateral width direction of the vehicle body 2 is close to the right opening 201R of the storage case 200, and the pallet disposed on the left side in the lateral direction of the vehicle body 2 The left side surface of 110 is close to the left opening 201L of the storage case 200 (see FIG. 3).

  Further, as shown in FIGS. 1 to 3, in the battery replacement mechanism 100, (1) a substantially square recess 111 is formed at the center of the upper surface in plan view for individually placing the two batteries 20, 20. The two pallets 110 and 110 having a substantially rectangular shape in plan view, and (2) the battery 20 disposed on one side (for example, the right side) of the left and right sides of the vehicle body 2 in the storage case 200 When taking it out from the other side (for example, the left side) of the left and right sides of the case, the pallet 110 on the one side (for example, the right side) on which the battery 20 is placed is conveyed toward the other side (for example, the left side) (See arrow A in FIG. 3), and when the battery 20 is stored in the other side (for example, left side) of the left and right sides of the vehicle body 2 to one side (for example, right side) of the left and right sides 20 is loaded The pallet 110 is transported from the other side (for example, the left side) of the vehicle body 2 toward the one side (for example, the right side) in the storage case 200 (see arrow B in FIG. 3). A conveying device 120 having a belt 121, a driving roller 122 and a driven roller 123, and (3) an intermediate position of the right axle 10R for transmitting the driving force to the driving roller 122 of the conveying device 120. And (4) both ends are formed by universal joints for transmitting the driving force branched by the driving force branching portion 130 to the driving roller 122 of the conveying device 120. (5) A clutch 151 (see FIG. 4) for switching whether to transmit the driving force from the branch drive shaft 140 to the drive roller 122 The left opening 201L and the right opening 201R are used to switch the stored connection portion 150 and (6) switch the transfer direction of the transfer device 120 (see arrows A and B in FIG. 3) and stop the transfer operation. And a left battery detection sensor 170L for detecting the presence or absence of the battery 20 on the left side of the vehicle body 2 in the storage case 200, and (8) the storage case 200. Inside the right side battery detection sensor 170R for detecting the presence or absence of the battery 20 on the right side of the vehicle body 2, and (9) the fork portion 310 described later on the pallet 110 on which the battery 20 is placed. 3) another battery 20 which can be removed from the storage case 200 and replaced A pair of left and right openings 201L and 201R having a substantially rectangular shape in a side view is provided so as to be able to store the pallet 110 on which it is placed in the storage case 200 by the fork portion 310. The pair of left and right changeover switches 160L and 160R will be further described later.

  Further, the electric vehicle 1 of the present embodiment receives and receives signals from the pair of left and right changeover switches 160L and 160R, and the pair of left and right battery detection sensors 170L and 170R, etc. A control unit 30 (see FIG. 4) is provided which controls the operation, ON / OFF of the motor 7, switching of the rotational direction (forward direction, reverse direction), and the like.

  FIG. 4 is a control block diagram concerning the replacement work of the battery 20 of the electric vehicle 1 of the present embodiment.

  In the present embodiment, the case where the transport belt 121 is made of rubber is described, but the material of the transport belt 121 is not limited to rubber.

  In addition, the pair of left and right battery detection sensors 170L and 170R are configured of a light emitting unit 171 having a light emitting element of infrared light, and a light receiving unit 172 having a light receiving element for receiving infrared light projected from the light emitting unit 171. There is.

  The light projection part 171 of the battery detection sensor 170L on the left side is the rear position of the left corner of the rear face of the battery 20 placed on the left side in the inner wall part 200c on the rear side of the storage case 200 (see FIGS. 2 and 3) And the light receiving portion 172 of the battery detection sensor 170L on the left side is a front position of the left corner of the front surface of the battery 20 mounted on the left side in the inner wall surface portion 200b on the front side of the storage case 200. As shown in FIG. 2 and FIG. 3, the infrared light emitted to the front of the vehicle body 2 from the light emitter 171 is fixed at a position where the infrared light can be received by the light receiving element.

  Thus, when the battery 20 is positioned on the left side with respect to the center position 200CL (see FIG. 2) in the lateral width direction of the storage case 200, light is projected to the front of the vehicle body 2 from the light projecting portion 171 of the battery detection sensor 170L on the left side. Since the infrared rays thus blocked are blocked by the left corner of the rear face of the battery 20, the light receiving portion 172 of the battery detection sensor 170L on the left side can not receive light. The control unit that has received the detection result determines that the battery 20 is positioned on the left side with reference to the center position 200CL in the lateral width direction of the storage case 200. When the light receiving unit 172 of the battery detection sensor 170L on the left side receives infrared light from the light emitting unit 171, the control unit positions the battery 20 on the left side with reference to the center position 200CL in the lateral width direction of the storage case 200. It determines that it is not done.

  In addition, in the inner wall surface portion 200c on the rear side of the storage case 200, the light projection portion 171 of the battery detection sensor 170R on the right side is the rear position of the right corner portion on the rear surface of the battery 20 mounted on the right (FIG. 2, FIG. 3 And the light receiving portion 172 of the battery detection sensor 170R on the right side is the front position of the right corner portion of the front surface of the battery 20 mounted on the right side in the inner wall surface portion 200b on the front side of the storage case 200. As shown in FIG. 2 and FIG. 3, the infrared light emitted to the front of the vehicle body 2 from the light emitter 171 is fixed at a position where the infrared light can be received by the light receiving element.

  Thereby, when the battery 20 is positioned on the right side with reference to the center position 200CL in the left-right width direction of the storage case 200, the infrared light projected to the front of the vehicle body 2 from the light projector 171 of the battery detection sensor 170R on the right is Since the light is blocked by the right corner portion of the rear surface of the battery 20, the light receiving portion 172 of the battery detection sensor 170R on the right side can not receive light. The control unit that has received the detection result determines that the battery 20 is positioned on the right side with reference to the center position 200CL in the lateral width direction of the storage case 200. When the light receiving unit 172 of the battery detection sensor 170R on the right side receives the infrared light from the light emitting unit 171, the control unit positions the battery 20 on the right side with reference to the center position 200CL in the width direction of the storage case 200. It determines that it is not done.

  Further, in the connecting portion 150 of the present embodiment, the clutch 151 is always kept in the “off” state during normal traveling, and the left switching switch 160L and the right switching switch 160R are operated when the battery 20 is replaced. Thus, the clutch 151 can be switched to the “on” state. Thus, during normal traveling, the transport belt 121 is not driven.

  Further, two substantially rectangular hole portions 112 into which fork portions 310 of a hand forklift 300 (see FIG. 5) described later can be inserted are provided in four side surfaces of the pallet 110, and Between the holes 112 provided two by two, two substantially circular hook holes 113 capable of being hooked with a hook 101a (see FIG. 3) described later are provided two by two.

  Further, the battery exchange mechanism 100 is provided with a rubber band-shaped fixed band 101 for preventing the battery 20 placed in the recess 111 of the pallet 110 from floating due to vibration during traveling. Furthermore, the belt-like fixing band 101 is attached with hooks 101a for hooking to the two hook holes 113 provided at both ends of the band.

  Thus, by hooking the two hooks 101a at both ends of the belt-like fixing band 101 into the two hooking holes 113, the battery 20 is always pressed to the depression 111 side by the elastic force of the rubber. 20 can be prevented from vibrating or shifting on the pallet 110.

  As described above, the provision of the recess 111 on the upper surface of the bullet 110 and the provision of the band-shaped fixed band 101 make it possible for the battery 20 to move or vibrate on the bullet 110 while traveling with a simple configuration. Can be prevented.

  Moreover, the conveyance belt 121 is made of rubber, and the surface on which the pallet 110 is placed is formed with unevenness (not shown) for anti-slip, and the pallet 110 may move on the conveyance belt 121 while traveling. It can prevent.

  The lengths of the left power supply cable 9L and the right power supply cable 9R are directed to the left side (or right side) of the vehicle body 2 as shown in FIG. 5 in order to take out the battery 20 by the transfer device 120 of the battery replacement mechanism 100. When the battery 20 is transported, the transported battery 20 is further taken out from the left opening 201L (or the right opening 201R) by the fork unit 310, and the insertion plug 9a is pulled out to a position where it can be detached by hand. Considering the case, it is set longer (see Figure 2).

  In the rear end portions of the left side power supply cable 9L and the right side power supply cable 9R, manual-made detachable plug 9a, 9a for electrically connecting with the two batteries 20, 20 (see FIG. 2). Reference is attached. Further, at the central position in the left-right width direction of the front side surface of the two batteries 20, an outlet 20a (see FIG. 3) for inserting the insertion plug 9a is provided.

  In addition, the storage case 200 for storing the transport device 120 and the pallet 110 on which the battery 20 is placed is provided at the left side opening 201L and the right side opening 201R on the left side and the right side of the vehicle body 2 (see FIG. 1 and FIG. 3). ) And is disposed between the center front frame 3Ca and the center rear frame 3Cb in plan view (see FIG. 2), and the upper end thereof in the center front frame 3Ca and the center rear frame 3Cb in side view It is fixed (see FIG. 1 and FIG. 2). The ceiling portion of the storage case 200 is covered by the floor panel 13. Further, in the electric vehicle 1 of the present embodiment, the storage case 200 is disposed so as not to protrude on the indoor space side of the vehicle body 2 by increasing the vehicle height.

  Further, the left side frame 3L is located at the upper end of the left opening 201L of the storage case 200, and the pallet 110 on which the battery 20 is placed is taken out from the conveying belt 121 in the storage case 200, or When placing the pallet 110 on which the battery 20 is placed on the transport belt 121 of the storage case 200, in order not to interfere with the battery 20 or the pallet 110, the portion protruding downward is not provided. It is done.

  Also for the right side frame 3R as well as in the case of the left side frame 3L, in order not to interfere with the battery 20 or the pallet 110 in consideration of the above-mentioned case, a portion protruding downward is not provided. It is formed.

  In addition, the transport device 120 is attached to the bottom surface portion 200 a of the storage case 200. Specifically, a support stay (not shown) rotatably supporting the driving roller 122 and the driven roller 123 is fixed to the bottom surface portion 200 a of the storage case 200.

  Further, lid members (not shown) are detachably attached to the pair of left and right openings 201L and 201R of the storage case 200 using fastening members (not shown). Further, by attaching the lid member, the rigidity of the storage case 200 can be strengthened.

  At the lower end portion of the door, the pallet 110 on which the battery 20 is placed is taken out from the conveying belt 121 in the storage case 200, or the pallet 110 on which the battery 20 is placed is the conveying belt 121 of the storage case 200. When placed on top, it is formed so as not to interfere with the battery 20 or the pallet 110.

  In the vicinity of the left opening 201L and the right opening 201R of the front inner wall portion 200b of the storage case 200, the transfer device 120 is rotated in the direction of arrow A (see FIG. 3), that is, the motor 7 in the forward rotation direction. A pair of left and right changeover switches for switching between moving or moving in the direction of arrow B (see FIG. 3), that is, rotating the motor 7 in the reverse rotation direction or stopping the transport of the transport device 120 160L and 160R (see FIG. 1 and FIG. 2) are provided.

  The pair of left and right changeover switches 160L and 160R in the present embodiment is a push button type, and is a so-called momentary type switch that is in the "ON" state only while the button is pressed. The operation of can be switched in three ways. That is, regarding the operation of the transfer device 120, the pair of left and right changeover switches 160L and 160R (1) transports the battery 20 in the removal direction, and (2) transports the battery 20 in the storage direction. And a forced stop button 163 for forcibly stopping the transfer operation (see FIG. 4).

  The pair of left and right changeover switches 160L and 160R is not limited to this, and may be, for example, a touch panel switch.

  As described above, since the electric vehicle 1 of the present embodiment is provided with the left and right openings 201L and 201R on the left and right sides of the storage case 200, a large space is provided on the left and right sides of the vehicle 2 at the battery exchange site. If secured, the operator performs the following replacement work.

  That is, after removing the lid members attached to the pair of left and right openings 201L and 201R, the fork 310 is inserted from the left opening 201L to the pallet 110 on the left, and the pallet 110 on the left is Take out the mounted battery 20, replace it with another battery 20 already charged and placed in the battery exchange place, and insert the fork unit 310 from the right opening 201R into the pallet 110 on the right Then, take out the right pallet 110 and the battery 20 placed thereon, and replace it with another battery 20 that has already been charged, and the replacement work of the two batteries 20, 20 is completed. . In this case, there is no need to drive the transport device 120. The left power supply cable 9L and the right power supply cable 9R may be attached and removed in the middle of the work of taking out and storing the left pallet 110 and the right pallet 110 from the storage case 200, respectively.

  However, in the battery exchange site, when only one of the left and right sides of the vehicle body 2 has a space for battery replacement, the two batteries 20, 20 are replaced (taken out on the one side). And storage).

  Therefore, in the control unit 30 of the electric vehicle 1 according to the present embodiment, the two batteries 20 can be exchanged even when there is only a space on either side of the left and right sides of the vehicle body 2. The following control is configured.

  Here, the control operation of the control unit 30 in the case of replacing the two batteries 20 in the battery replacement space provided only on the left side of the vehicle body 2 will be mainly described. Also in the case of exchanging 20 and 20, since the relationship between the left and right terms is substantially the same if read in reverse, the description of the control operation is omitted.

  In addition, the specific description regarding the battery exchange in a battery exchange place is further mentioned later mainly, referring FIGS. 3-6.

  That is, in the electric vehicle 1 of the present embodiment, the control unit 30 enters the battery exchange mode by operating the battery exchange mode on / off switch (not shown) provided on the dashboard to the “on” state, and the initial stage thereof. As a state, it will be in the standby state which can receive the ON signal from the pair of left and right selector switches 160L and 160R.

  Here, since three buttons are respectively provided on the pair of left and right changeover switches 160L and 160R, the three cases of (1) to (3) will be described correspondingly.

  (1) First case: When the takeout / conveyance button 161 of the left side changeover switch 160L is pressed while the control unit 30 is in the standby state.

  In this case, the control unit 30 first determines which of the left and right side changeover switches the signal is from, and determines that it is the "ON" signal from the left side changeover switch 160L, It is determined that which of the three buttons (the takeout / conveyance button 161, the storage / conveyance button 162, and the forcible stop button 163) is pressed, and the takeout / conveyance button 161 is pressed. When the determination result is obtained, the control unit 30 acquires the detection result of the presence or absence of the battery 20 by the left battery detection sensor 170L.

  Then, when the control unit 30 determines that the battery 20 is "absent" on the left side of the transport belt 121 from the acquired detection result of the presence or absence of the battery 20, the transport direction of the transport device 120 is the arrow A direction (see FIG. 3). If it is determined that the battery 20 is "present" on the left side of the conveyance belt 121, the control unit 30 does not rotate the conveyance device 120, and the speaker 40 provided in the storage case 200 ( A predetermined first voice message is output from FIG. 4) to alert the operator and returns to the standby state described above.

  That is, when the control unit 30 determines that the battery 20 is "absent" on the left side of the conveyance belt 121, the control unit 30 clutches a switching signal for switching the clutch 151 from the "off" state to the "on" state. It sends to the drive unit 8 a low-speed positive rotation signal for sending to 151 and for rotating the motor 7 forward at low speed. The drive unit 8 drives the motor 7 using the power of the battery 20 to be transported. Thus, the transfer device 120 starts rotating at a low speed in the direction of arrow A, and the pallet 110 placed on the right side of the transfer belt 121 is directed from the right to the left opening 201L while the battery 20 is loaded. Will be transported.

  In addition, the predetermined first voice message described above output when the control unit 30 determines that the battery 20 is “present” is, for example, “The battery is present in the vicinity of the left side opening portion. It can not be transported. "

  Furthermore, as described above, the control unit 30 determines that the battery 20 is “absent”, and the pallet 110 placed on the right side of the transport belt 121 is placed on the right side left opening 201L while the battery 20 is placed. When conveyed toward the front, when the left side surface of the pallet 110 reaches the vicinity of the left opening 201L, the left corner of the rear surface of the battery 20 receives the infrared rays from the light projecting portion 171 of the left battery detection sensor 170L. Since it shuts off, the light reception state of the light receiving portion 172 of the left battery detection sensor 170L changes from ON to OFF. The control unit 30 detects the change in the light receiving state of the light receiving unit 172 of the left battery detection sensor 170L from ON to OFF, whereby the battery 20 mounted on the pallet 110 extends from the right to the vicinity of the left opening 201L. It is determined that it has arrived, and the rotation of the transfer device 120 is automatically stopped. That is, the control unit 30 sends a switching signal for switching the clutch 151 from the "on" state to the "off" state to the clutch 151, and sends a stop signal for stopping the rotation of the motor 7 to the drive unit 8.

  Then, the control unit 30 causes the speaker 40 to output the second voice message of the content "conveyance of the battery 20 is completed." And returns to the above-described standby state.

  As a result, when taking out the two pallets 110, 110 on which the batteries 20, 20 are respectively placed from the left opening 201L, the operator first places the pallet 110 placed on the left side on the transport belt 121. Is taken out from the left opening 201L using the fork part 310 of the hand forklift 300, and the pallet 110 placed on the right side on the conveyance belt 121 is pressed by pushing the takeout / conveyance button 161 of the left changeover switch 160L. It can be transported to the vicinity of the left opening 201L and is automatically stopped at that position. In this manner, since the pallet 110 can be automatically stopped at an appropriate fixed position at all times, the operator does not have to constantly keep track of the movement of the pallet 110, and can perform other tasks in parallel to increase work efficiency. Can be achieved. In addition, the position at which the pallet 110 is stopped does not depend on the operator's ability to ensure the certainty of the operation.

  Then, the operator can take out the pallet 110 which has reached and stopped at a fixed position near the left opening 201L from the left opening 201L using the fork part 310 of the hand forklift 300, so the safety of the operation And certainty can be ensured.

  In addition, before the worker erroneously takes out the work procedure described above and takes out the pallet 110 initially mounted on the left side on the conveyance belt 121 from the left opening 201L using the fork unit 310 of the hand forklift 300. Even when the takeout and conveyance button 161 of the left side changeover switch 160L is operated, as described above, the control unit 30 acquires the detection result of the presence or absence of the battery 20 by the left battery detection sensor 170L, and the battery 20 By determining that there is “Yes”, the control unit 30 causes the speaker 40 (see FIG. 4) provided in the storage case 200 to output a predetermined first voice message without rotating the transfer device 120, and the worker To prevent the drop of the battery 20 due to the operator's erroneous operation, and the safety of the work It can be ensured.

  (2) Second case: When the storage and conveyance button 162 of the left side changeover switch 160L is pressed while the control unit 30 is in the standby state.

  In this case, the control unit 30 first determines which of the left and right side changeover switches the signal is from, and determines that it is the "ON" signal from the left side changeover switch 160L, It is determined which of the three buttons (the takeout / conveyance button 161, the accommodation / conveyance button 162, the forced stop button 163) is pressed, and the accommodation / conveyance button 162 is pressed. When the determination result of the above is obtained, the control unit 30 acquires the detection result of the presence or absence of the battery 20 by the right battery detection sensor 170R.

  Then, when the control unit 30 determines that the battery 20 is "absent" on the right side of the transport belt 121 from the acquired detection result of the presence or absence of the battery 20, the transport direction of the transport device 120 is the arrow B direction (see FIG. 3). If it is determined that the battery 20 is "present" on the right side of the conveyance belt 121, the control unit 30 does not rotate the conveyance device 120, and the speaker 40 provided in the storage case 200 ( A predetermined third voice message is output from FIG. 4) to alert the operator and returns to the standby state described above.

  That is, when it is determined by the control unit 30 that the battery 20 is “absent” on the right side of the conveyance belt 121, the control unit 30 switches the switching signal from the “off” state to the “on” state. A low speed reverse rotation signal is sent to the drive unit 8 to be sent to the clutch 151 and to reversely rotate the motor 7 at low speed. The drive unit 8 drives the motor 7 using the power of the battery 20 to be transported. As a result, the transport device 120 starts rotating at a low speed in the direction of arrow B, and the pallet 110 placed on the left side of the transport belt 121 is directed from the left to the right opening 201R while the battery 20 is loaded. Will be transported.

  In addition, the predetermined third voice message described above, which is output when the control unit 30 determines that the battery 20 is “present”, for example, “The battery is present near the right opening, so It can not be transported. "

  Furthermore, as described above, the control unit 30 determines that the battery 20 is “absent”, and the pallet 110 placed on the left side of the transport belt 121 faces the right opening 201R from the left while the battery 20 is loaded. As the right side of the pallet 110 reaches the vicinity of the right opening 201R, the right corner of the back of the battery 20 blocks the infrared rays from the light projecting portion 171 of the right battery detection sensor 170R. As a result, the light receiving state of the light receiving portion 172 of the right battery detection sensor 170R changes from ON to OFF. The control unit 30 detects the change in the light receiving state of the light receiving unit 172 of the right battery detection sensor 170R from ON to OFF, so that the battery 20 mounted on the pallet 110 extends from the left to the vicinity of the right opening 201R. It is determined that it has arrived, and the rotation of the transfer device 120 is automatically stopped. That is, the control unit 30 sends a switching signal for switching the clutch 151 from the "on" state to the "off" state to the clutch 151, and sends a stop signal for stopping the rotation of the motor 7 to the drive unit 8.

  Then, the control unit 30 causes the speaker 40 to output the second voice message of the content "conveyance of the battery 20 is completed." And returns to the above-described standby state.

  As a result, in the case where the two pallets 110, 110 on which the different batteries 20, 20 for which charging has been completed are placed, are stored in the storage case 200 from the left opening 201L, the operator first completes the charging. After the pallet 110 on which another battery 20 is placed is placed on the transport belt 121 from the left opening 201L using the fork portion 310 of the hand forklift 300, the storage transport button 162 of the left switching switch 160L is pressed. Thus, the pallet 110 placed on the left side on the conveyance belt 121 can be conveyed to the vicinity of the right opening 201R and automatically stopped at that position. In this manner, the pallet 110 can always be automatically stopped at an appropriate fixed position even at a position that is difficult for the operator to see, so the operator does not have to constantly keep track of the movement of the pallet 110. In addition to securing the safety of the work, other work can be performed in parallel to improve the work efficiency. Further, since the pallet 110 can be automatically stopped at an appropriate fixed position in the vicinity of the right opening 201R, on the left side of the conveyance belt 121, there is a space enough to mount another pallet 110, It is secured without depending on the ability of the worker.

  Thereby, the worker secures the pallet 110 on which another battery 20, which has been completely charged, has been placed, from the left opening 201L to the left on the conveyance belt 121 using the fork portion 310 of the hand forklift 300 It can be safely and reliably placed in the space where the two batteries 20 have been charged can be stored in the storage case 200 efficiently.

  In addition, even if the worker misoperates the work procedure described above and operates the storage and conveyance button 162 of the left side changeover switch 160L in a situation where the pallet 110 is placed on the right side on the conveyance belt 121, as described above The control unit 30 rotates the transfer device 120 by acquiring the detection result of the presence or absence of the battery 20 by the right battery detection sensor 170R and determining that the battery 20 is "present". Instead, the speaker 40 (see FIG. 4) provided in the storage case 200 outputs a predetermined third voice message to call the operator's attention, so the lid of the right opening 201R of the battery 20 due to the operator's erroneous operation It is possible to prevent a collision or a drop on a member, and to secure the safety of the operation.

  (3) Third case: When the forcible stop button 163 is pressed.

  When the control unit 30 receives an “ON” signal from the forcible stop button 163 while the conveyance device 120 is performing a conveyance operation, the control unit 30 automatically stops the rotation of the conveyance device 120. That is, the control unit 30 sends a switching signal for switching the clutch 151 from the "on" state to the "off" state to the clutch 151, and sends a stop signal for stopping the rotation of the motor 7 to the drive unit 8.

  Then, the control unit 30 causes the speaker 40 to output a fourth voice message of the content of “forced stop of the transfer device.” To alert the operator and return to the above-described standby state.

  As a result, the worker can forcibly stop the transfer operation of the transfer apparatus 120 at an arbitrary timing by his / her own intention, so that the safety of the battery replacement operation can be secured.

  In addition, even if the control unit 30 receives an “ON” signal from the forcible stop button 163 while the transport device 120 is stopped, the control unit 30 returns to the above-described standby state without doing anything.

  Further, as is apparent from the description of the first case and the second case described above, the functions of the pair of left and right battery detection sensors 170L and 170R can be summarized as follows.

  That is, when the left battery detection sensor 170L takes out the two batteries 20, 20 from the left opening 201L of the vehicle body 2, (1) when conveying the right battery 20 on the conveyance belt 121 to the left by the conveyance device 120; Has a function as a safety device that does not start the conveyance operation if it detects presence / absence of the battery 20 on the left side of the conveyance belt 121, and (2) the right side on the conveyance belt 121 When the battery 20 is transported to the left by the transport device 120, the battery 20 which has reached the vicinity of the left opening 201L on the transport belt 121 is detected, and the battery 20 is dropped from the left opening 201L. It has a function as a safety stop device to stop the transport operation safely.

  The right battery detection sensor 170R transports the left battery 20 on the transport belt 121 to the right by the transport device 120 when the two batteries 20, 20 are stored from the left opening 201L of the vehicle body 2 In this case, the presence or absence of the battery 20 on the right side of the conveyance belt 121 is detected, and if it is detected as "present", it has a function as a safety device which does not start the conveyance operation. When the battery 20 on the left side is transported to the right by the transport device 120, the battery 20 that has reached the vicinity of the right opening 201R on the transport belt 121 is detected, and the pallet 110 on which the battery 20 is placed is detected. Function as a safety stop device for safely stopping the transport operation without causing a collision with the lid member of the right opening 201R A.

  The above description of the functions of the pair of left and right battery detection sensors 170L and 170R is for replacing the two batteries 20, 20 in the battery replacement space provided only on the left side of the vehicle body 2, Also in the case of replacing the two batteries 20 on the right side of the vehicle body 2, the relationship between the left and right terms is substantially the same if read in reverse.

  From the above, when the pair of left and right battery detection sensors 170L, 170R replace the two batteries 20, 20 through one of the pair of left and right openings 201L, 201R of the vehicle body 2, it is safe It can be said that it has both the function as a device and the function as a safety stop device.

  The vehicle body 2 of the present embodiment corresponds to an example of the vehicle body of the present invention, and the motor 7 of the present embodiment corresponds to an example of the motor of the present invention. Further, the two batteries 20 of the present embodiment correspond to an example of the plurality of batteries of the present invention, and the two pallets 110 of the present embodiment correspond to an example of the plurality of battery mounting members of the present invention. . Moreover, the conveyance apparatus 120 of this Embodiment corresponds to an example of the conveyance part of this invention. Further, the conveyance belt 121 of the present embodiment corresponds to an example of the conveyance belt of the present invention, and the drive roller 122 of the present embodiment corresponds to an example of the drive roller of the present invention.

  Next, the operation of the battery replacement mechanism 100 of the present embodiment will be described mainly with reference to FIG. 3, FIG. 5, and FIG.

  FIG. 5 is a schematic plan view schematically showing replacement work of the two divided batteries 20 in the electric vehicle 1 of the present embodiment.

  6 is a schematic side view of the hand forklift 300. As shown in FIG.

  In the present embodiment, the case where a battery replacement space is provided only on the left side of the vehicle body 2 in the self-type gas station will be described.

  In the self-type gas station, the replacement work of the two batteries 20, 20 in the case where the battery replacement space is provided on the left and right sides of the vehicle body 2 is as already described above, so the description here is omitted. Do.

  In addition, at this self-service gasoline station, a battery 20 for replacement, which has been charged in advance, is stored in a state of being fixed to the pallet 110 by a band-like fixing band 101, and the pallet 110 is exchanged and transported. Hand forklift 300 is prepared.

  Furthermore, in the battery exchange space of the self-service gasoline station, a pair of front and rear rotating rollers 401 (see FIG. 5) for rotatably supporting the pair of left and right front wheels 4L and 4R of the electric vehicle 1 from below are disposed. Roller equipment 400 is provided. The front wheels 4L and 4R are driven with the left and right front wheels 4L and 4R of the electric vehicle 1 mounted between the predetermined intervals 402 of the pair of rotating rollers 401 arranged at predetermined intervals 402 back and forth In this case, since the pair of front and rear rotary rollers 401 is driven to rotate with the driving of the front wheels 4L and 4R, the vehicle body 2 itself is stopped at that position.

  The electric vehicle 1 is provided with a neutral mode in which the power from the motor 7 is not transmitted to the left and right axles 10L and 10R, and the battery exchange mode on / off switch (not shown) is operated to "on" to automatically switch to the neutral mode. By switching the configuration, even if the transfer device 120 is driven, the left and right front wheels 4L, 4R do not rotate. Therefore, in this configuration, it is not necessary to provide roller equipment 400 in the battery replacement space. That is, in the case of the electric vehicle of this configuration, in the neutral mode, the power from the motor 7 is transmitted only to the transfer device 120 and any of the left and right axles 10L, regardless of which of the left changeover switch 160L and the right changeover switch 160R is operated. It is not transmitted to 10R.

  The hand forklift 300 of the present embodiment corresponds to an example of the cargo handling device of the present invention, and the fork unit 310 of the present embodiment corresponds to an example of the fork portion of the cargo handling device of the present invention.

  First, the driver of the electric vehicle 1 moves the electric vehicle 1 to the battery exchange space provided with such roller equipment 400, and the pair of left and right front wheels 4L and 4R are separated by a predetermined interval 402 of the pair of front and rear rotating rollers 401. The vehicle body 2 is stopped by putting in between, and the battery exchange mode on / off switch (not shown) is operated to "on".

  Next, the driver goes out of the vehicle and removes only the lid member (not shown) attached to the left opening 201L of the storage case 200.

  Then, the driver operates the fork unit 310 of the hand forklift 300 to take out the pallet 110 placed on the upper surface of the conveyance belt 121 and having the battery 20 mounted thereon from the left opening 201L, The plug 9a of the cable 9L is pulled out to a position where it can be detached by hand.

  Specifically, the driver adjusts the height so that the tip of the fork unit 310 of the hand forklift 300 can be inserted into the hole 112 provided in the left side surface of the pallet 110 located in the vicinity of the left opening 201L. The height of the fork portion 310 is adjusted by operating the lever 320 (see FIG. 6). Then, the driver grips the pair of left and right handle portions 330 of the hand forklift 300 and moves the hand forklift 300 in the direction of arrow B (see FIG. 5) while the tip of the fork portion 310 is the hole 112 in the left side surface of the pallet 110 Then, the height adjustment lever 320 is operated to raise the fork unit 310 a little.

  As a result, the lower surface of the pallet 110 is separated from the surface of the transport belt 121, so the driver holds the pair of left and right handle portions 330 and keeps the hand forklift 300 in the direction opposite to the arrow B direction (see FIG. 5). The pallet 110 on which the battery 20 is placed is taken out from the storage case 200 of the vehicle body 2, and the insertion plug 9a of the left power supply cable 9L is pulled out to a position where it can be detached by hand. Then, the insertion plug 9 a of the left side power cable 9 L is pulled out of the outlet 20 a of the battery 20.

  Thereafter, the pallet 110 on which the battery 20 is placed is completely pulled out from the storage case 200 of the vehicle body 2 and carried to a predetermined place while being placed on the hand forklift 300.

  Then, since the replacement battery 20, which has been charged in advance, is stored in a state of being fixed to the pallet 110 by the belt-like fixing band 101, the pallet 110 is extended to the rear of the electric vehicle 1 using the hand forklift 300. The pallet 110 carrying another battery 20 which has been completely charged is once lowered to that position and temporarily placed temporarily.

  Thereafter, the driver presses the takeout and conveyance button 161 (see FIG. 4) of the left side changeover switch 160L provided on the left side of the front inner wall portion 200b of the storage case 200.

  Thereby, as described above, the control unit 30 (see FIG. 4) provided in the vehicle body 2 receives the “ON” signal from the takeout and conveyance button 161 of the left side changeover switch 160L, and further, the left battery detection sensor 170L. When the result of detecting the presence or absence of the battery 20 is obtained and it is determined that the battery 20 is "absent" on the left side of the conveyance belt 121, the conveyance direction of the conveyance device 120 is controlled to be the arrow A direction (see FIG. 3). . Thereby, since the drive unit 8 rotates the motor 7 forward at low speed using the power of the battery 20 to be transported, the left and right axles 10L and 10R forward rotate at low speed, and the driving force branch unit 130 The branched drive force is transmitted to the drive roller 122 via the branch drive shaft 140 and the clutch 151 of the connecting portion 150.

  As a result, the transport belt 121 moves in the direction of arrow A (see FIG. 3), and the pallet 110 on which the battery 20 is placed is transported toward the opening 201L on the left side of the vehicle body 2 as shown in FIG. Then, as described above, when the left side surface of the pallet 110 reaches the vicinity of the left opening 201L, the light receiving state of the light receiving portion 172 of the left battery detection sensor 170L changes from ON to OFF. The control unit 30 detects the change in the light receiving state of the light receiving unit 172 of the left battery detection sensor 170L from ON to OFF, whereby the battery 20 mounted on the pallet 110 extends from the right to the vicinity of the left opening 201L. It is determined that it has arrived, and the rotation of the transport device 120 is automatically stopped, and the second voice message is emitted from the speaker 40 as described above.

  Next, the driver pulls out the insertion plug 9a of the right power supply cable 9R connected to the receptacle 20a of the battery 20 mounted on the pallet 110 which has stopped on reaching the left opening 201L. Similarly to the above, the driver reaches the left side on the conveyance belt 121 and stops. The pallet 110 with the battery 20 mounted on the upper surface is operated from the left opening 201L by operating the fork portion 310 of the hand forklift 300. It takes out and pulls out the insertion plug 9a of the right side power supply cable 9R to the position which can be detached by hand. Then, the insertion plug 9 a of the right power supply cable 9 R is pulled out of the outlet 20 a of the battery 20.

  Thereafter, the pallet 110 on which the battery 20 is placed is completely pulled out from the storage case 200 of the vehicle body 2 and carried to a predetermined place while being placed on the hand forklift 300.

  Then, the pallet 110 stored in a state where the replacement battery 20, which has been charged in advance, is fixed to the upper surface is carried to the left side of the electric vehicle 1 using the hand forklift 300.

  Furthermore, the driver operates the height adjustment lever 320 to adjust the height of the fork portion 310 so that the pallet 110 can be placed on the upper surface of the transport belt 121 from the left opening 201L. Then, the driver holds the pair of left and right handle portions 330 of the hand forklift 300 and moves the hand forklift 300 in the direction of arrow B (see FIG. 5), and the inside of the storage case 200 is about half the width of the pallet 110. Then, the hand fork lift 300 is temporarily stopped at that position, and the insertion plug 9 a of the right power supply cable 9 R is inserted into the outlet 20 a of the battery 20. Thereafter, the driver again grips the pair of left and right handle portions 330 of the hand forklift 300 to further move the hand forklift 300 in the direction of arrow B (see FIG. 5), and the left side of the pallet 110 on which the battery 20 is placed is After visually confirming that the storage case 200 is inserted to the inside of the left opening 201L, the movement of the hand forklift 300 is stopped, and the height adjustment lever 320 is operated to lower the fork portion 310 a little. After visually confirming that the upper surface portion of the fork portion 310 is separated from the ceiling portion of the hole portion 112 of the pallet 110, the height adjustment lever 320 is operated to stop the lowering of the fork portion 310, and the hand forklift 300 Is moved in the direction opposite to the direction of arrow B (see FIG. 5) to Completely pulled out from the hole 112.

  Thereafter, the driver presses the storage and conveyance button 162 (see FIG. 4) of the left side changeover switch 160L provided on the left side of the front inner wall portion 200b of the storage case 200.

  Thereby, as described above, the control unit 30 (see FIG. 4) receives the “ON” signal from the storage transport button 162 of the left side switching switch 160L, and further detects the presence or absence of the battery 20 by the right battery detection sensor 170R. When the result is obtained and it is determined that the battery 20 is "absent" on the right side of the conveyance belt 121, control is performed so that the conveyance direction of the conveyance device 120 is in the arrow B direction (see FIG. 3). As a result, the drive unit 8 reversely rotates the motor 7 at low speed using the power of the battery 20 to be transported, so that the left and right axles 10L and 10R reversely rotate at low speed and branch off from the drive force branch unit 130 The driving force thus generated is transmitted to the drive roller 122 via the branch drive shaft 140 and the clutch 151 of the connecting portion 150.

  As a result, the transport belt 121 moves in the direction of arrow B (see FIG. 3), and the pallet 110 on which another battery 20 that has been charged is placed is transported toward the opening 201R on the right side of the vehicle body 2. And (see FIG. 3), as described above, when the right side surface of the pallet 110 reaches the vicinity of the right opening 201R, the light receiving state of the light receiving portion 172 of the right battery detection sensor 170R changes from ON to OFF. The control unit 30 detects the change in the light receiving state of the light receiving unit 172 of the right battery detection sensor 170R from ON to OFF, so that the battery 20 mounted on the pallet 110 extends from the left to the vicinity of the right opening 201R. It is determined that it has arrived, and the rotation of the transport device 120 is automatically stopped, and the second voice message is emitted from the speaker 40 as described above.

  Next, the driver lifts, by the fork unit 310 of the hand forklift 300, the pallet 110 on which the other fully charged battery 20, which has been temporarily placed temporarily behind the vehicle body 2, is loaded by the fork unit 310. The height 310 is adjusted, and is inserted into the left side of the conveyance belt 121 from the left side opening 201 L of the storage case 200. Then, in the middle of the insertion, similarly to the above, the insertion plug 9a of the left power supply cable 9L is inserted into the outlet 20a of the battery 20, and the left side of the pallet 110 is completely accommodated inside the left opening 201L. It is inserted and placed on the transport belt 121 at that position.

  Thereby, the two pallets 110 on which the batteries 20 having the same shape and the same weight are respectively placed are equally disposed to the left and right centering on the center position 200CL of the left and right width of the vehicle body 2, and the weight balance of the vehicle body 2 is kept good. I can do it.

  Finally, the driver fixes a lid member (not shown) to the left opening 201L of the storage case 200 using a fastening member.

  By the above operation, the driver can easily replace the two batteries 20, 20 from both sides or one side of the vehicle body 2 by a safe and efficient operation.

  Further, the driving unit 8 drives the motor 7 by using the electric power of the battery 20 to be conveyed to drive the conveying device 120, so that the heavy battery 20 can be conveyed reliably and easily. Can do.

  From the above description, according to the electric vehicle 1 of the present embodiment, for example, by preparing a simple battery replacement space provided with simple equipment in a self-service gas station etc., the work of the gas station The driver, of course, exerts the effect that the driver can easily replace the two batteries 20, 20 by themselves.

  Moreover, since it is only necessary to provide simple equipment, for example, at a self-type gas station or the like, infrastructure investment for installing a battery replacement space can be suppressed at a low price.

  Further, according to electric vehicle 1 of the present embodiment, the two batteries can be replaced from any one side of left and right sides of vehicle body 2, so a large space can not be secured at the battery exchange site. But you can do battery replacement work. Therefore, for example, in a self-service gas station or the like, it is not necessary to secure a large battery replacement space, and infrastructure investment can be suppressed at a low price.

  Further, according to the above configuration, since the battery for securing the necessary charge amount is divided into two and mounted, compared to the case where the battery is configured to be integrated into one, each battery 20 The size can be reduced, and the lift operation and transport operation of the pallet 110 on which the battery 20 is placed by the hand forklift 300 can be facilitated, and the burden on the operator and driver of the gas station at the battery replacement operation can be reduced.

  Further, according to the above configuration, since the battery for securing the necessary charge amount is divided into two and mounted, only one of the two batteries 20 can be replaced. And the freedom of battery replacement is expanded.

  Further, according to the above configuration, the outlet 20a on the battery 20 side for electrically connecting the insertion plugs 9a of the power cables 9L and 9R is provided at the center position of the lateral width of the front side of the battery 20. It is possible to minimize the margin of the total length of the power cables 9L, 9R to be secured in order to allow the battery 20 to be taken out from either of the left and right sides of the vehicle body 2.

  Further, according to the above configuration, the outlet 20a on the battery 20 side for electrically connecting the insertion plugs 9a of the power cables 9L and 9R is provided at the center position of the lateral width of the front side of the battery 20. The two batteries 20 can be completely the same shape and the same size, and the common use of the batteries can be achieved.

Further, according to the above configuration, in the battery exchange place where the battery exchange space is secured on the left and right sides of the vehicle body 2, the pallet 110 on the right side of the storage case 200 on which the battery 20 is placed is When replacing through the opening 201R, the power from the battery 20 located on the left side of the storage case 200 can be used, and the pallet 110 located on the left side of the storage case 200 and on which the battery 20 is placed can be used. At the time of replacement via the left opening 201L, since power from the battery 20 located on the right side of the storage case 200 is available, at least one of the two batteries 20, 20 can be used even during battery replacement work. Since either one is electrically connected, the power supply of the electric vehicle 1 is secured, and the air It is possible to use the electronic equipment such as emissions and car navigation systems.
Second Embodiment
In the second embodiment, a second electric vehicle 1001 will be described in which two interchangeable batteries 20 having the same shape and the same size are arranged so that the weight balance in the lateral width direction of the vehicle body becomes uniform.

  FIG. 7 is a schematic plan view of a second electric vehicle 1001 according to another embodiment of the present invention.

  Here, differences from the electric vehicle 1 of the first embodiment are mainly described, and the same reference numerals are given to configurations that are basically in common.

  As shown in FIG. 7, the second electric vehicle 1001 according to the present embodiment includes (1) a vehicle body 2 and (2) a main frame 3 having a substantially rectangular shape in a plan view, which forms a skeleton of the vehicle body 2. (3) A pair of left and right front wheels 4L and 4R as drive wheels, (4) A pair of left and right rear wheels 5L and 5R as driven wheels, (5) steering handle 6, (6) motor 7 as a drive source And (7) two replaceable batteries 20 and 20 of the same shape that supply power to the drive unit 8 via the left power cable 9L and the right power cable 9R. (8) A power transmission unit 11 incorporating a differential mechanism for transmitting the driving force from the motor 7 to the front wheels 4L, 4R via the left and right axles 10L, 10R, and (9) The seat 12 is mounted on the front and rear The floor panel 13 10) the left and right sides of the front and later respectively arranged door and (not shown), and a.

  The two batteries 20 are electrically connected in parallel to the drive unit 8.

That is, as can be understood from the above description, the second electric vehicle 1001 of the present embodiment
The transfer device 120, the drive force branch unit 130, the branch drive shaft 140, the connection unit 150, the pair of left and right battery detection sensors 170L and 170R, and the pair of left and right changeover switches 160L and 160R (see FIGS. 1 and 2) The point which is not provided is a basic difference from the electric vehicle 1 of the first embodiment, and the other configuration is basically the same.

  In addition, a storage case 200 is provided which can store two pallets 110, 110 with the battery 20 mounted on their upper surfaces, with equal weight balance on both the left and right sides centering on the central position 200CL, A pair of left and right openings 201L and 201R are formed on the left and right sides of the storage case 200 in the same manner as the electric vehicle 1 of the first embodiment, but the bottom surface 200a of the storage case 200 The electric vehicle 1 of the first embodiment is different from the electric vehicle 1 of the first embodiment in that a concave portion on which two pallets 110 can be mounted is formed.

  That is, in the bottom portion 200a of the storage case 200, substantially square concave portions having substantially the same size as the external shape of the pallet 110 in plan view are respectively left and right at the regular positions where the pallets 110 and 110 are mounted. It is formed. The bottom of the recess is flat. The two pallets 110, 110 can be prevented from being displaced during traveling by being placed on the bottom surface of this recess respectively.

  As a result, there is no need to provide the battery exchange mechanism 100 (see FIG. 1 and FIG. 2) as described in the first embodiment in the storage case 200, and thus the case of the electric vehicle 1 of the first embodiment In comparison, the dimension in the height direction of the storage case 200 can be reduced.

  From the above, according to the second electric vehicle 1001 of the present embodiment, at the battery exchange site where a wide space is secured on the left and right sides of the vehicle 2, the worker or driver of the battery exchange site is as follows. Replacement work can be done.

  First, after removing the lid members attached to the pair of left and right openings 201L and 201R of the storage case 200, the fork unit 310 of the hand forklift 300 is inserted from the left opening 201L into the pallet 110 on the left. The left pallet 110 and the battery 20 placed thereon are taken out and replaced with another battery 20 already charged and placed in the battery exchange place.

  Next, the fork unit 310 of the hand forklift 300 is inserted into the right side pallet 110 from the right side opening 201R, and the right side pallet 110 and the battery 20 mounted thereon are taken out, and charging is already completed. Replace with another battery 20.

  Thus, the replacement work of the two batteries 20 can be performed extremely easily, and the weight balance in the lateral width direction of the vehicle body can be made uniform.

  The left power supply cable 9L and the right power supply cable 9R are detached and removed from the storage case 200 as in the case of the first embodiment, by removing the left pallet 110 and the right pallet 110, respectively. It may be performed in the middle of the storing operation.

  Further, according to the configuration of the present embodiment, the roller exchange unit 400 described in the first embodiment is not required in the battery exchange site, so it is sufficient to secure the space necessary for battery exchange, and the infrastructure investment Can be kept cheap.

  Further, according to the configuration of the present embodiment, since the battery for securing the necessary charge amount is divided into two and mounted, compared to the case where the battery is configured as one integrated structure Therefore, the size of each battery 20 can be reduced, and the lift operation and transport operation of the pallet 110 on which the battery 20 is placed by the hand forklift 300 is facilitated, and the worker and driver of the gas station corresponding to the battery replacement work Burden is reduced.

  Further, according to the configuration of the present embodiment, since the battery for securing the necessary charge amount is divided into two and mounted, only one of the two batteries 20, 20 is replaced. It is also possible to increase the freedom of battery replacement.

  Further, according to the configuration of the present embodiment, the outlet 20a on the battery 20 side for electrically connecting the insertion plug 9a of the power cables 9L and 9R is provided at the center position of the left and right width of the front side of the battery 20. As a result, the two batteries 20 can be made into the same shape and the same size completely, and the common use of the batteries can be achieved.

  Further, according to the configuration of the present embodiment, when the pallet 110 located on the right side of the storage case 200 and on which the battery 20 is placed is replaced at the battery exchange site via the right opening 201R, the storage case 200 Power from the battery 20 located on the left side of the storage case 200 can be used, and when replacing the pallet 110 placed on the left side of the storage case 200 on which the battery 20 is placed via the left opening 201L, the storage case Since the power from the battery 20 located on the right side of the 200 is available, at least one of the two batteries 20 is electrically connected even during the battery replacement operation. The power supply of the electric vehicle 1 is secured, and it becomes possible to use electronic devices such as an air conditioner and a car navigation system.

  Further, according to the configuration of the present embodiment, since the transport device 120 and the like provided in the electric vehicle 1 of the first embodiment is not provided, the structure can be simplified and the weight of the vehicle can be reduced. It can.

  Further, according to the configuration of the present embodiment, since the transport device 120 and the like provided in the electric vehicle 1 of the first embodiment is not provided, time for transporting the pallet 110 by the transport device 120 is unnecessary. As a result, the battery replacement work can be shortened.

  Further, according to the configuration of the present embodiment, since the battery for securing the necessary charge amount is divided into two and mounted, compared to the case where the battery is configured as one integrated structure Therefore, the size of each battery 20 can be reduced, and the lift operation and the transportation operation of the pallet 110 on which the battery 20 is placed by the hand forklift 300 can be facilitated, and the battery replacement operation can be shortened.

  Further, according to the configuration of the present embodiment, by using two hand forklifts 300 and performing battery replacement work simultaneously from both sides of the vehicle body 2 by two people, the replacement time can be overwhelmingly shortened.

  Further, according to the configuration of the present embodiment, storage case 200 is not provided as compared with the case where conveyance device 120 etc. provided in electric vehicle 1 of the first embodiment is provided and conveyance device 120 etc. is provided. Since the dimension in the height direction can be reduced, the indoor space of the second electric vehicle 1001 can be expanded.

  Further, according to the configuration of the present embodiment, storage case 200 is not provided as compared with the case where conveyance device 120 etc. provided in electric vehicle 1 of the first embodiment is provided and conveyance device 120 etc. is provided. Since the size in the height direction of the second electric vehicle 1001 can be reduced, the center of gravity of the vehicle body of the second electric vehicle 1001 is lowered, the vehicle body is stabilized, and the riding comfort is improved.

  In the above embodiment, the configuration in which the pair of left and right battery detection sensors 170L and 170R are provided has been described. However, the present invention is not limited to this. For example, the pair of left and right battery detection sensors 170L and 170R may not be provided. In the case of this configuration, for example, the timing of safety confirmation at the start of the transfer operation of the transfer apparatus 120 and the timing of stopping the transfer operation may be performed based on judgment by visual inspection of the operator or the like. Further, in place of the pair of left and right battery detection sensors 170L and 170R, a mark plate is provided from the central position 200CL of the ceiling of the inside of the storage case 200 so that the appropriate position to stop the pallet 110 can be visually confirmed. It may be suspended so that it can swing. According to this configuration, for example, using the hand forklift 300, the pallet 110 on which the battery 20, which has been charged in advance, has been loaded is moved from the left opening 201L (or right opening 201R) to the left Or the right side corner of the upper surface of the battery 20 transported from the left side (or right side) to the right side (left side) when placed on the right side and transported toward the right side opening 201R (or left side opening 201L) The part (left corner) abuts on the lower end of the mark plate to turn the mark plate to the right (left side), and then the upper surface of the battery 20 continues to be in contact with the lower end of the mark plate. By keeping in contact with the mark plate, the mark plate is maintained in the same posture, but the battery 20 is further transported in the right direction (left direction). The mark plate is released from contact by the upper surface of the battery 20 immediately before the side corner (right corner) passes the central position 200CL and the left side (right side) of the pallet 110 passes the central position 200CL. Since the mark plate is adjusted in the same manner, the mark plate pivots to the left (right side) and swings to the left and right for a while, but eventually hangs down and stops downward. If the worker visually confirms that the mark plate has been released from the contact by the upper surface portion of the battery 20 and started to rotate toward the left side (right side), the left side switching switch 160L (or right side switching) The forced stop button 163 of the switch 160R may be pressed. As a result, the transport operation of the transport apparatus 120 is stopped, and the pallet 110 can be stopped at an appropriate position on the right side (or left side) of the storage case 200. The visibility is further improved by applying a prominent color such as a fluorescent paint to the above-described mark plate.

  Further, in the above embodiment, although the configuration has been described in which the pair of left and right battery detection sensors 170L and 170R use infrared rays, the present invention is not limited to this and may be, for example, laser light, and the type is not limited to light. .

  In the above embodiment, the left and right battery detection sensors 170L and 170R have been described as transmission-type configurations in which the light emitting unit and the light receiving unit are individually provided, but the present invention is not limited to this. It may be a reflection type provided with a reflection plate. In this configuration, the reflecting plate may be previously attached to a predetermined position on the front side or the rear side of the battery 20 or the pallet 110, for example.

  Further, in the above embodiment, the case has been described where the pair of left and right battery detection sensors 170L and 170R are photoelectric sensors provided with a light emitting unit and a light receiving unit, but the invention is not limited thereto. For example, proximity using magnetism It may be a sensor, and is not limited to the structure of the sensor. In the case of a proximity sensor utilizing magnetism, for example, a magnet may be attached in advance to a predetermined position on the front side or the rear side of the battery 20 or the pallet 110.

  Further, in the above embodiment, although the case has been described where the pair of left and right changeover switches 160L and 160R is a push button type so-called momentary type switch which is in the "ON" state only while the button is pressed. The present invention is not limited to this, and any configuration may be used as long as it can switch the operation of the transfer device 120 in three ways as described above. For example, it may be a dial switch that can be switched to any position among three positions, or may be a lever switch.

  Further, in the above embodiment, the outlet 20a (see FIG. 3) for inserting the left and right power cables 9L and 9R into the center position in the left and right width direction of the front side of the two batteries 20 and 20, respectively. Although the case where it is provided has been described, the present invention is not limited thereto. For example, the outlet of the battery 20 has a rail structure capable of sliding movement in the left and right direction, and a hook rod whose tip is bent in a hook shape Also good. In this configuration, the operator can catch the slidable outlet with the tip of the hook and pull it to the opening before taking the pallet 110 out of the storage case 200 using the hand forklift 300. The plug 9a can be pulled out of the outlet. In addition, after the outlet of the battery 20 has a rail structure which can slide in the lateral direction, a moving mechanism for automatically moving the outlet to the opening may be provided on the vehicle body side.

  Moreover, although the case where two batteries were mounted was demonstrated in the said embodiment, not only this but the number of batteries may be three or more, for example.

  In the above embodiment, although two identical batteries having the same shape and the same size are mounted, the invention is not limited to this. For example, a plurality of batteries are not identical in shape and size, respectively. Also good.

  Moreover, although the said embodiment demonstrated the case where the electric vehicle 1 was a front wheel drive, not only this but a rear wheel drive may be sufficient, for example. In that case, the driving force of the transfer device 120 may be branched from the rear wheel side by providing the driving force branching portion 130 on the axle of the rear wheel. In the case of four-wheel drive, the driving force of the transfer device 120 may be branched from either the front wheel side or the rear wheel side.

  Further, in the above embodiment, when the battery 20 is transported, the left and right axles 10L and 10R of the front wheels are also rotated along with the rotation of the drive roller 122 of the transport device 120 (FIGS. 2 and 5) For example, when transporting the battery 20, the drive force may be transmitted only to the drive roller 122 without rotating the left and right axles 10L and 10R of the front wheels. In order to realize this configuration, for example, a transmission switching mechanism 500 that switches a transmission path whether to transmit the driving force from the motor 7 to the power transmission unit 11 or to the drive roller 122 side (see FIG. 8). ) May be provided on the transmission path between the drive unit 8 and the power transmission unit 11. Further, in the case of the third electric vehicle 1a (see FIG. 8) provided with the transmission switching mechanism 500 in this manner, there is no need to incorporate the clutch 151 in the connecting portion 150 described above. There is also no need to provide roller equipment 400 (see FIG. 5) in the battery replacement space. Further, in the case of the third electric vehicle 1a provided with the transmission switching mechanism 500 in this manner, for example, when the takeout / conveyance button 161 of the left side changeover switch 160L is pressed, the control unit provided on the vehicle body 2 In response to the signal, the transmission path in the transmission switching mechanism 500 is switched so that the driving force from the motor 7 is transmitted only to the drive roller 122 side, and a signal for driving the motor 7 forward at low speed is used as a drive unit 8. In addition, for example, when the left side switching switch 160L storing and conveying button 162 is pressed, the control unit receives the signal, and the driving force from the motor 7 is the driving roller in the transmission switching mechanism 500. While switching so as to be transmitted only to the side 122, a control signal for reverse rotating the motor 7 at low speed is output to the drive unit 8, and, for example, When the forcible stop button 163 of the side changeover switch 160L is pressed, the control unit receives the signal, and the drive path from the motor 7 to the power transfer unit 11 is also transmitted to the drive roller 122. It is good also as composition which stops rotation of motor 7 while changing to a neutral state which is not transmitted also by the side. FIG. 8 is a schematic plan view showing the third electric vehicle 1a provided with the transmission switching mechanism 500, and the same reference numerals are given to the same configuration as the electric vehicle 1 of FIG.

  In the above embodiment, whether the motor 7 simultaneously drives the left and right axles 10L and 10R and the drive roller 122 of the transfer device 120 (see the electric vehicle 1 of FIG. 2) or selectively In either case (refer to the third electric vehicle 1a in FIG. 8), the case where one motor 7 serves both to drive the left and right axles 10L and 10R and to drive the drive roller 122 will be described. However, the present invention is not limited to this, and for example, as shown in FIG. 9, in addition to the motor 7 for driving the left and right axles 10L and 10R, the conveyance device dedicated motor 600 for driving only the drive roller 122 of the conveyance device 120 is provided. You may comprise the 4th electric vehicle 1b. FIG. 9 is a schematic plan view of a fourth electric vehicle 1b provided with a conveyance device dedicated motor 600 for driving only the drive roller 122 of the conveyance device 120 in addition to the motor 7 for driving the left and right axles 10L and 10R. The same reference numerals as in the electric vehicle 1 of FIG. Further, in the case of the fourth electric vehicle 1b (see FIG. 9) provided with the transfer device dedicated motor 600 in this manner, there is no need to incorporate the clutch 151 in the connecting portion 150 described above. It is not necessary to provide the roller equipment 400 (see FIG. 5) in the battery replacement space of FIG.

  Further, in the electric vehicle 1 of the above embodiment, the case where the storage case 200 is disposed so as not to protrude on the indoor space side of the vehicle body 2 by raising the vehicle height has been described, but not limited thereto. As shown in FIG. 10, the fifth electric vehicle 1c may be configured as another example in which the storage case 200 is disposed in a state of being protruded to the indoor space side of the vehicle body 2. In this configuration, the approximate center of the front-rear width of the left side frame 3L and the right side frame 3R takes the pallet 110 on which the battery 20 is placed in and out of the left opening 201L or the right opening 201R of the storage case 200. At this time, in order not to interfere with those members, it is necessary to be formed in a shape projecting upward in a side view, that is, toward the indoor space side so as to retract upward. FIG. 10 is a schematic left side view of a fifth electric vehicle 1c as another example of the electric vehicle according to the present invention.

  Further, in the second electric vehicle 1001 according to the above-described embodiment, the storage case 200 is disposed in a state where the storage case 200 protrudes to the indoor space side of the vehicle body 2 as in the case of the fifth electric vehicle 1c shown in FIG. In the configuration, since the second electric vehicle 1001 is not provided with the transport device 120 and the like, the dimension in the height direction of the storage case 200 can be reduced. Therefore, the fifth electric vehicle shown in FIG. As compared with 1c, the protrusion of the vehicle body 2 to the indoor space side can be reduced, and the indoor space can be widened.

  In the above embodiment, the left and right side frames 3L and 3R and the floor panel 13 are separate members. However, the present invention is not limited to this. For example, the floor panel and the left and right side frames are integrated. The structure provided with the formed floor frame (illustration omitted) may be sufficient. In the case of such a configuration, when the pallet 110 on which the battery 20 is placed is taken in and out of the pair of left and right openings 201L and 201R of the storage case 200 in the floor frame, the side part of the floor frame located on the side It may be formed so as not to interfere with the members of the battery 20 and the pallet 110 to be taken in and out (see FIGS. 1 and 10).

  Further, in the above embodiment, the pallets 110 and 110 are mounted by placing the pallets 110 and 110 on which the battery 20 is mounted on the transport belt 121 on the surface of which the unevenness (not shown) for anti-slip is formed. Although the configuration that can prevent movement on the conveyance belt 121 during traveling has been described, the present invention is not limited thereto, for example, the groove 121W of width W corresponding to the front and rear width of the pallet 110 on the surface of the conveyance belt 121 (FIG. 3). It is good also as composition which formed inside a perimeter along the conveyance direction along the conveyance direction. Thus, by placing the pallet 110 in the groove portion 121W of the transport belt 121, it is possible to prevent the displacement of the vehicle body 2 in the front-rear direction more effectively. The pallets 110 and 110 can be prevented from being displaced in the front-rear direction on the transport belt 121.

  Further, in the above embodiment, as a configuration for preventing positional deviation of the pallet 110 on which the battery 20 is placed, the case where unevenness (not shown) for anti-slip is formed on the surface of the conveyance belt 121 (embodiment) 1) In addition, although the case where the recess is formed in the bottom surface portion 200a of the storage case 200 (see Embodiment 2) has been described, in addition to this, the front side and the rear side of the bottom surface portion of the storage case 200, or the front side And a pair of self-locking movable arms each having a substantially L-shape or the like in a side view on the rear wall and the ceiling, and the tips of the pair of self-locking movable arms are provided Is inserted into the hole portion 112 (see FIG. 3) formed in the side surface of the pallet 110 in the front-rear direction, the pallet 110 vibrates in the vertical direction during traveling, or in the front-rear, left-right direction It may be configured to prevent the location shift. The self-locking movable arm locks the pallets 110, 110 in conjunction with, for example, being operated in the "off" state of the battery exchange mode on / off switch (not shown) provided on the dashboard described above. It is good also as composition.

  In the above embodiment, although the case where the charged battery 20 is stored in the state fixed to the pallet 110 by the band fixing band 101 is described in the self type gas station, the present invention is not limited thereto. Only the battery 20 which has been charged in advance may be stored. In that case, it is necessary for the driver to remove the battery 20 from the pallet 110 and fix the battery 20 which has been charged on the pallet 110.

  In the above embodiment, the battery replacement work is performed in the battery replacement space provided in the self-operated gas station. However, the present invention is not limited to this. For example, the battery replacement space (battery replacement place) It may be provided anywhere.

  Further, in the above embodiment, the case where the hole portion 112 into which the tip end of the fork portion 310 of the hand forklift 300 is inserted is formed in the side surface portion in the pallet 110 is not limited thereto. In the bottom of the body 110, the tip end of the fork portion 310 of the hand forklift 300 can be inserted in the lateral width direction of the vehicle body 2 when replacing the batteries 20, 20 via the pair of left and right openings 201L, 201R. A pair of grooves (not shown) may be formed in parallel.

  Moreover, although the case where the hand forklift 300 was used as an example of the cargo handling apparatus of this invention was demonstrated in the said embodiment, not only this but also when replacing | exchanging a battery using a forklift of a passenger type, for example Is applicable. In this case, a driver is required to operate a passenger-type forklift, so normally, the driver of the electric vehicle can not perform the operation of driving the passenger-type forklift and replacing the battery. The specialized worker who carries out the battery replacement at the battery exchange site has an effect that the battery can be replaced more easily than before.

  Moreover, although the case where the hand forklift 300 was used as an example of the cargo handling apparatus of this invention was demonstrated in the said embodiment, it replaces with this, for example, it replaces with the hand forklift 300, replaces | exchanges a battery using an unmanned forklift. It is good also as composition to do. In this case, the unmanned forklift is assumed to have a function capable of automatically replacing the battery.

  Further, although the battery 20 and the pallet 110 are described as separate members in the above embodiment, the present invention is not limited to this. For example, the battery 20 and the pallet 110 may be integrally configured. A hole or a groove may be provided to which the fork portion 310 of the fork or the fork of the riding type can be inserted (see FIG. 11). FIG. 11 is a schematic side view schematically showing a state in which an integrated battery 2020 in which the battery 20 and the pallet 110 are integrated is mounted on the transfer device 120 in the electric vehicle 1 described in the first embodiment. It is. As shown in FIG. 11, on the left and right side surfaces of the integrated battery 2020, two pairs of left and right integrated holes 2112L and 2112R into which forks can be inserted are formed.

  In addition, when the integrated battery 2020 having such a pallet function is used, the integrated battery having the pallet function can be provided by providing the storage case 200 with a lock mechanism similar to the above-described automatic locking movable arm. 2020 can be fixed to the storage case 200 more reliably.

  According to this configuration, since it is not necessary to include the pallet 110 described above, the dimension in the height direction of the storage case 200 can be reduced as compared with the configuration including the pallet 110. Therefore, for example, in the case of the electric vehicle 1 of the type that raises the vehicle height described in FIG. 1, it is possible to suppress the increase in the vehicle height to a low level. In addition, since the battery 20 and the pallet 110 are integrated, the band-shaped fixing band 101 becomes unnecessary.

  According to the electric vehicle of the present invention, an effect that battery replacement can be easily performed is exhibited, and for example, it is useful as a battery replacement type electric vehicle.

DESCRIPTION OF SYMBOLS 1 electric vehicle 1001 second electric vehicle 1a third electric vehicle 1b fourth electric vehicle 1c fifth electric vehicle 2 vehicle body 3 main frame 4L, 4R left and right pair of front wheels 5L, 5R left and right pair of rear wheels 6 steering wheel 7 Motor 8 Drive Unit 9L Left Power Supply Cable 9R Right Power Supply Cable 10L, 10R Left and Right Axle 11 Power Transmission Unit 12 Seat 13 Floor Panel 20 Battery 100 Battery Replacement Mechanism 110 Pallet 120 Conveying Device 121 Conveying Belt 122 Drive Roller 123 Driven Roller 130 Drive force branching portion 140 Branching drive shaft 150 Connecting portion 160L Left changeover switch 160R Right changeover switch 170L Left battery detection sensor 170R Right battery detection sensor 200 Storage case 201L Left opening 201R Right opening

The first invention is
With the car body,
A motor provided on the vehicle body for driving traveling wheels;
At least a plurality of replaceable batteries for driving the motor;
A plurality of battery mounting members for individually mounting the plurality of batteries, each having a function of a pallet that can be handled by a fork unit of a cargo handling device;
An electric car equipped with
The battery mounting member on which the battery is mounted is disposed in the lateral width direction of the vehicle body,
On the left and right sides of the vehicle body, the battery mounting member on which the battery is placed can be removed from the vehicle body by the fork portion, and an opening portion which can be stored in the vehicle body by the fork portion is provided. Yes,
The plurality of batteries are two batteries,
One of the two batteries is disposed at the opening on one side of the openings provided on the left and right sides of the vehicle body in a state of being mounted on the battery mounting member And the other battery of the two batteries is mounted on the battery mounting member at the other opening of the openings provided on the left and right sides of the vehicle body Are placed at
And a transport unit provided on the vehicle body that can transport the battery mounting member on which the battery is placed to either the left side or the right side of the vehicle body,
The transport unit is capable of transporting the battery mounting member on which the battery placed on the other opening is mounted to the one opening. .

The second invention of the present invention is
The transport unit includes a transport belt on which the battery mounting member is placed, and a drive roller capable of driving the transport belt in any of the left and right directions of the vehicle body.
In the electric vehicle according to the first aspect of the present invention, the drive force from the motor can be switched to the drive roller side.

The third invention of the present invention is
The battery according to the first or second aspect of the present invention is characterized in that the battery and the battery mounting member are integrally formed.

Claims (5)

With the car body,
A motor provided on the vehicle body for driving traveling wheels;
At least a plurality of replaceable batteries for driving the motor;
A plurality of battery mounting members for individually mounting the plurality of batteries, each having a function of a pallet that can be handled by a fork unit of a cargo handling device;
An electric car equipped with
The battery mounting member on which the battery is mounted is disposed in the lateral width direction of the vehicle body,
On the left and right sides of the vehicle body, the battery mounting member on which the battery is placed can be removed from the vehicle body by the fork portion, and an opening portion which can be stored in the vehicle body by the fork portion is provided. An electric car that is characterized by The plurality of batteries are two batteries,
One of the two batteries is disposed at the opening on one side of the openings provided on the left and right sides of the vehicle body in a state of being mounted on the battery mounting member And the other battery of the two batteries is mounted on the battery mounting member at the other opening of the openings provided on the left and right sides of the vehicle body Are placed at
And a transport unit provided on the vehicle body that can transport the battery mounting member on which the battery is placed to either the left side or the right side of the vehicle body,
2. The apparatus according to claim 1, wherein the transport unit is capable of transporting the battery mounting member on which the battery placed in the opening on the other side is placed to the opening on the one side. Description electric car. The transport unit includes a transport belt on which the battery mounting member is placed, and a drive roller capable of driving the transport belt in any of the left and right directions of the vehicle body.
The electric vehicle according to claim 2, wherein the driving force from the motor can be transfer-switched to the drive roller side. The vehicle body is provided with a storage case for storing the battery mounting member on which the battery is mounted,
The said battery mounting member is directly mounted in the bottom face part of the said storage case, The electric vehicle of Claim 1 characterized by the above-mentioned.   The said battery and the said battery mounting member are integrally comprised, The electric vehicle as described in any one of the Claims 1 thru | or 4 characterized by the above-mentioned.

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