JP2012086690A - Saddle riding type electric vehicle - Google Patents

Abstract

Provided is a saddle-ride type electric vehicle in which a drive battery and battery electrical components are arranged in a concentrated manner and the maintenance performance thereof can be satisfactorily secured.
A drive battery 2 and battery electrical components (a charger 32, a contactor 25, a converter 27, and a sub-battery 28) are disposed below a seat 9, and the battery 2 and the battery electrical components are arranged. Is arranged so as to face the lower surface of the sheet 9.
[Selection] Figure 1

Description

  The present invention relates to a saddle-ride type electric vehicle such as an electric motorcycle.

  2. Description of the Related Art Conventionally, in a saddle-ride type electric vehicle, various battery electrical components are housed in a battery box that houses a drive battery, and these are concentratedly arranged at the lower part of the vehicle body (see, for example, Patent Document 1). ).

JP 2001-114153 A

  By the way, in the above-described conventional configuration, in order to attach and detach the drive battery and battery electrical parts that are unitized, it is necessary to attach and detach the vehicle body cover, storage box, seat, and the like that cover the periphery. It was complicated.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a saddle-ride type electric vehicle in which drive batteries and battery electrical components are centrally arranged, and these maintainability can be satisfactorily secured.

As a means for solving the above-mentioned problems, the invention described in claim 1 is a battery in which a drive battery (2) and battery electrical components (32, 25, 27, 28) are arranged below the seat (9, 46). A ride-type electric vehicle (1), wherein the drive battery (2) and the battery electrical components (32, 25, 27, 28) are arranged so as to face the lower surface of the seat (9, 46). It is characterized by.
The saddle-ride type electric vehicle includes all vehicles that ride across the vehicle body, and includes not only motorcycles but also three-wheelers (including front-wheel and rear-two wheels as well as front-wheel and rear-wheel vehicles) or Four-wheel vehicles are also included.
The term “facing” is not limited to directly facing the lower surface of the sheet, but includes the one in which the following inner cover (48) or the like is inserted between the lower surface of the sheet. That is, after the seat is removed, the drive battery and the battery electrical components can be accessed without much man-hours.
According to a second aspect of the present invention, the battery electrical component (32, 25, 27, 28) includes at least one of a charger (32), a contactor (25), a converter (27), and a sub-battery (28). It is characterized by including.
According to a third aspect of the present invention, the seat (9) includes a first sheet (9b) that covers an upper side of the driving battery (2), and an electrical component for the battery (32, 25, 27, 28). It is divided into a second sheet (9a) covering the upper side, and the first sheet (9b) can be removed only when the second sheet (9a) is removed.
According to a fourth aspect of the present invention, the seat (46) is integrally provided over the driving battery (2) and the battery electrical components (32, 25, 27, 28), and the seat ( An inner cover (48) separated from 46) is disposed above the driving battery (2).

According to the first and second aspects of the present invention, the drive battery and the battery electrical components can be accessed simply by removing the seat while the drive battery and the battery electrical components are concentrated under the seat. Maintenance can be improved.
According to the invention described in claim 3, access to the relatively low voltage battery electrical component is possible only by removing the second sheet, and access to the relatively high voltage drive battery is further performed by the first sheet. Since it is necessary to remove the battery, it is possible to strengthen restrictions on access to the drive battery.
According to the fourth aspect of the present invention, access to the battery electrical components having a relatively low voltage can be performed only by removing the seat, and access to the drive battery having a relatively high voltage can be further removed. In short, it is possible to strengthen access restrictions on the drive battery.

1 is a left side view of a saddle-ride type electric vehicle in an embodiment of the present invention. It is II-II sectional drawing of FIG. It is a schematic block diagram of the said saddle-ride type electric vehicle. It is a principal part enlarged view of FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is VI-VI sectional drawing of FIG. (A) is a left side view showing a first modification of the main part of the saddle-ride type electric vehicle, and (b) is a left side view showing a second modification of the main part of the saddle-ride type electric vehicle. is there. It is a top view which shows the 3rd modification of the principal part of the said saddle-ride type electric vehicle. It is a left view which shows the 4th modification of the principal part of the said saddle-ride type electric vehicle. It is XX sectional drawing of FIG.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the directions such as front, rear, left and right in the following description are the same as those in the vehicle described below unless otherwise specified. Further, in the drawings used for the following explanation, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown.

  A saddle-ride type electric vehicle 1 shown in FIGS. 1 and 2 has a traveling battery (hereinafter sometimes referred to as a driving battery) 2 mounted at the center upper part of the vehicle body, and a motor unit 3 for traveling at the center lower part of the vehicle body. The motor unit 3 is driven by the electric power from the battery 2, and the driving force is transmitted to the rear wheel 4 as a driving wheel to travel.

  The saddle-ride type electric vehicle 1 is in the form of a motorcycle, the front wheel 5 of which is pivotally supported by the lower ends of a pair of left and right front forks 6, and the upper portion of the left and right front forks 6 is connected to the front end of the body frame 11 via a steering stem 7. The head pipe 12 is pivotally supported to be steerable. A steering handle 8 is attached to the upper portion of the steering stem 7 (or front fork 6).

  A pair of left and right main frames 13 extend rearward from the head pipe 12, and a pair of left and right pivot frames 14 extend downward from the rear ends of the left and right main frames 13. A front end of the swing arm 15 is pivotally supported on the left and right pivot frame 14 via a pivot 14 a so that the swing arm 15 can swing up and down, and a rear wheel 4 is pivotally supported on the rear end of the swing arm 15. The front part of the saddle-ride type electric vehicle 1 is covered with a front cowl 21, and the rear part of the vehicle is covered with a rear cowl 22.

  The left and right main frames 13 extend obliquely downward and rearward from the head pipe 12 as viewed from the side of the vehicle, then bend rearward, and extend rearward substantially horizontally to the vehicle front-rear intermediate portion. Hereinafter, the inclined portion in the vicinity of the head pipe 12 in the left and right main frame 13 is referred to as a front inclined portion 13a, and the rear portion thereof is referred to as a rear extending portion 13b.

  The front inclined portion 13a of the left and right main frame 13 extends obliquely from the head pipe 12 to the rear left and right outer sides when viewed from the top of the vehicle, and then curves backward. And extending rearward substantially parallel to the rearward extending portion 13b.

  From the lower portion of the head pipe 12 (or the front inclined portion 13a of the left and right main frame 13), a pair of left and right down frames 16 extend obliquely rearward and downward, and the left and right down frames 16 curve backward at the lower portion of the vehicle body. And are connected to the lower ends of the left and right pivot frames 14, respectively.

  A pair of left and right seat rails 17 extend rearward from the rear ends of the left and right main frames 13. A pair of left and right support frames 18 that incline rearward is provided between the front and rear intermediate portions of the left and right seat rails 17 and the left and right pivot frames 14. Hereinafter, the combination of the left and right seat rails 17 and the left and right support frames 18 is referred to as a rear frame 19. A cushion unit 19 a is interposed between the rear frame 19 and the swing arm 15.

  A rear seat 9 a is supported on the rear frame 19, and a front seat 9 b is supported on the main frame 13. Each of the seats 9a and 9b has, for example, its upper surface (sitting surface) connected in a flush manner, and allows an occupant (including a passenger in addition to the driver) to be seated at an arbitrary position. These seats 9a and 9b constitute a seat 9 of the saddle-ride type electric vehicle 1.

  The left and right main frames 13 have a vertically long rectangular shape whose cross-sectional shape is longer in the vertical direction (up and down direction) than in the horizontal direction (left and right direction) (see FIG. 6). It is considered a product. The vehicle body frame 11 is formed by integrally joining a plurality of types of metal members by welding or the like. The driving battery 2 is mounted between the left and right main frames 13 so as to overlap these in a side view.

  The battery 2 is composed of, for example, a plurality (three in the figure) of single batteries 2a arranged in front and rear, and generates a predetermined high voltage (48 to 72V) by connecting them in series. Each single battery 2 a has a rectangular parallelepiped shape, and is fixedly supported by the vehicle body frame 11 in the battery housing space 13 c between the left and right main frames 13. Each single battery 2a is an energy storage that can be charged and discharged as appropriate, and includes, for example, a lithium ion battery, a nickel metal hydride battery, a lead battery, or the like.

  The front seat 9b is disposed on the left and right main frames 13 so as to cover the battery 2 from above. The front seat 9b is located at a position where a fuel tank and an air cleaner are disposed in an existing internal combustion engine vehicle, and is sandwiched between both knees of an occupant seated on the rear seat 9a. The front seat 9b also functions as a lid that opens and closes the upper portion of the battery accommodating space 13c below the front seat 9b.

  The motor unit 3 is fixedly supported below the battery housing space 13c. The motor unit 3 is disposed in a space surrounded by the main frame 13, the down frame 16, and the pivot frame 14 in a side view. For example, the front end is bolted to the down frame 16, and the top and bottom of the rear end are bolted to the pivot frame 14. Is fixedly supported.

  A motor main body 3 a having a rotation axis C <b> 1 along the left-right direction is accommodated in the central portion of the motor unit 3. The rotational power of the motor body 3a is transmitted to the rear wheel 4 through, for example, the chain transmission mechanism 4a after passing through the speed reduction mechanism. The motor unit 3 may include a transmission that changes the rotational power of the motor body 3a and a clutch that manually or automatically interrupts power transmission.

  As shown in FIG. 3, the electric power from the battery 2 is supplied to a PDU (power driver unit) 26 that is a motor driver via a contactor 25 that is linked to a main switch (not shown), and the PDU 26 changes from direct current to three-phase alternating current. After the conversion, it is supplied to the motor body 3a which is a three-phase AC motor. Further, the output voltage from the battery 2 is stepped down via a DC-DC converter (hereinafter simply referred to as a converter) 27, and a general electric component 29 such as a 12V sub-battery 28 or a lighting device, and an ECU (electric control unit). ) 31 and other control system parts.

  The battery 2 is charged by a charger 32 connected to, for example, an AC 100V power source. The charging / discharging status, temperature, and the like of the battery 2 are monitored by a BMU (battery managing unit) 33, and this information is shared with the ECU 31. The ECU 31 receives output request information from the throttle (accelerator) sensor 34, and the ECU 31 drives and controls the motor body 3a via the PDU 26 based on the output request information. In addition, although the charger 32 is mounted on the saddle riding type electric vehicle 1 in this embodiment, it may not be mounted. Further, depending on the type of the single battery 2a, the sub battery 28 may be omitted.

  As shown in FIGS. 4 and 5, a pair of left and right traveling air intakes 36 are provided on both sides of the head pipe 12 in the body frame 11. The left and right traveling wind intake ports 36 penetrate the front end portions of the left and right main frames 13 on both sides of the head pipe 12 in the front-rear direction, and provide a space between the front of the vehicle body frame 11 and the space between the left and right main frames 13 (battery housing space 13c). Communicate. An intake duct 37 that opens toward the front of the vehicle at the front end of the front cowl 21 is connected to the left and right traveling wind intakes 36. Thus, when the vehicle is traveling, traveling wind is introduced into the battery housing space 13c via the intake duct 37 and the traveling wind intake 36. In addition, the flow (traveling wind path) of the traveling wind is indicated by an arrow in the figure.

  The traveling wind introduced into the battery housing space 13c from the left and right traveling wind intakes 36 is formed on the bottom plate 38 that is inclined along the front inclined portion 13a in the front portion of the front seat 9b and the inner side surface of the left and right main frame 13. After being guided by the plurality of fins 39 so as to flow rearward and downward along the front inclined portion 13 a of the left and right main frame 13, it reaches the battery housing space 13 c between the left and right main frames 13. Each fin 39 curves backward just before the battery housing space 13c and contributes to guiding the traveling wind to the battery housing space 13c.

  Referring also to FIG. 6, a cross member 13d for connecting these is appropriately provided between the lower portions of the left and right main frames 13, and the battery 2 is supported on the cross member 13d. The battery housing space 13c opens up and down, but its upper open part is covered by the lower surface of the front seat 9b. On the other hand, the lower open part of the battery housing space 13c is opened downward (on the motor unit 3 side) so that a part of the traveling wind in the battery housing space 13c can be supplied toward the motor unit 3. A BMU 33 provided integrally therewith is disposed above the battery 2, and a control unit 35 in which the PDU 26 and the ECU 31 are integrated is disposed below the battery 2.

  As shown in FIGS. 4 and 6, each single battery 2 a (battery 2) is accommodated in a rectangular parallelepiped battery case 24 that is long in the front-rear direction, and these are handled as an integral battery unit 2 </ b> A. The battery case 24 is divided into upper and lower cases 24a and 24b, for example. A rubber 24 c as a buffer material is interposed between the inner surface of the battery case 24 and the battery 2.

A BMU case 33 a that houses the BMU 33 is attached to the upper front side of the battery case 24. The BMU case 33a is opened downward, and the BMU case 33a and the battery case 24 communicate with each other. The BMU 33 and the BMU case 33a are handled as an integral battery unit 2A together with the battery 2 and the battery case 24.
The traveling wind reaching the battery housing space 13 c mainly cools the battery 2 while flowing outside the battery case 24. However, the traveling wind may be introduced into the battery case 24.

As shown in FIGS. 4 and 5, the left and right main frames 13 have a plurality (three in the figure) of air outlets that can discharge the traveling wind introduced into the battery housing space 13c to the outside in the vehicle width direction (left and right direction). 41 are provided along with the vehicle front-back direction. In addition, the number of the exhaust ports 41 is not restricted to three.
Each exhaust port 41 is provided, for example, so as to be applied to the rear end portion of each single battery 2a in a side view, and allows the traveling wind that flows around each single battery 2a to be discharged out of the battery housing space 13c. Each exhaust port 41 forms a traveling wind passage that is inclined so as to be located on the rear side in the vehicle width direction outer side. A part of the traveling wind introduced into the battery housing space 13c is drawn out of the battery housing space 13c from each exhaust port 41 by the traveling wind flowing outside the left and right main frames 13. Thereby, the flow of the driving | running | working wind in the battery accommodation space 13c is accelerated | stimulated, and the coolability of the battery 2 improves.

  In addition, although each exhaust port 41 is formed in the side view trapezoid shape which narrowed the up-and-down width in the rear side in FIG. 4, it is not restricted to this, The circular shape containing various polygonal shapes, ellipses, etc. including a simple square shape, Furthermore, a porous shape may be sufficient. Further, in FIG. 4, each exhaust port 41 is substantially the same size, but as shown in FIG. 7A, for example, the rear exhaust port 41 is made larger in the vertical direction (opening area is increased), etc. You may vary the magnitude | size of each ventilation port 41 in front and back. Further, the air exhaust port 41 may be formed so as to be longer in the longitudinal direction of the left and right main frame 13 (the vehicle front-rear direction in FIG. 4) and gradually increase in the vertical width toward the rear side. At this time, it does not matter whether the number of exhaust ports 41 is single or plural.

Further, as shown in FIG. 7 (b), the rear extension 13b of the left and right main frames 13 is inclined rearwardly downward, and each single battery 2a is displaced rearwardly in a stepped manner along this. In addition, the air outlets 41 may be arranged so as to be displaced in a step-down manner. In this case, it is easy for the traveling wind to directly hit the front surface of each single battery 2a, thereby improving the cooling performance. In addition, the structure by which each single battery 2a and each air exhaust port 41 are simply inclined and arranged along the inclination of the main frame 13 may be adopted.
Here, a louver, a fin, or the like may be provided at each exhaust port 41.

  As shown in FIGS. 4 and 5, the side-view triangular space surrounded by the rear end edges of the left and right main frames 13 and the left and right pivot frames 14, the front part of the left and right seat rails 17, and the left and right support frames 18, An electric equipment arrangement space 19c in which electric parts for the battery such as the charger 32, sub battery 28, contactor 25 and converter 27 are arranged.

  The charger 32, the sub-battery 28, and the contactor 25 are arranged in order from the left side in the front part of the electrical equipment placement space 19c, and the converter 27 is placed in the rear part of the electrical equipment placement space 19c. The upper parts of these battery electrical components are covered with the lower surface of the rear seat 9a. In the figure, reference numeral 32a denotes a connection portion of an external power source in the charger 32, and reference numeral 32b denotes a cooling fan that supplies cooling air to the charger 32 when the battery 2 is charged.

  The rear end portions of the left and right main frames 13 are connected by a cross member (not shown), but a part of the traveling wind introduced into the battery housing space 13c reaches the electrical layout space 19c, and the cooling of each component in the space And then discharged around the rear wheel 4. The left and right sides of the electrical arrangement space 19c are covered by the left and right side covers 23, and the left and right side covers 23 are also provided with air exhaust ports 23a.

  Here, the modification shown in FIG. 8 is such that the rearward extension 13b of the left and right main frame 13 is inclined so that the rear side is located on the left and right sides. In this case, the action of extracting the traveling wind in the battery accommodating space 13c from each exhaust port 41 by the traveling wind flowing on the outer surfaces of the left and right main frames 13 is enhanced.

  In FIG. 8, the frame front portion 42 around the head pipe 12 and the frame rear portion 43 around the pivot frame 14 are solid integrally formed by aluminum casting or the like, and the frame middle portion 44 of the left and right main frames 13 is a single unit. It is a hollow monolithic structure made of one or more members. In FIG. 8, the rearmost exhaust vent 41 is formed through a solid portion of the frame rear portion 43, but each front exhaust vent 41 is formed by a cylindrical member 45 that penetrates a hollow portion of the frame intermediate portion 44.

  As shown in FIGS. 1 and 4, the front seat 9 b has an engaging portion 9 c that engages the front end portion of the rear seat 9 a from above, for example, at the rear end portion thereof. Thus, the rear seat 9a needs to be removed to remove the front seat 9b.

  The rear seat 9a can be removed without using a tool, for example, by operating a lock mechanism (not shown). Thereafter, by removing the seat 9a, the charger 32, the sub battery 28, the contactor 25, and the converter 27 disposed below the seat 9a can be accessed, and maintenance and the like thereof can be performed. The lock mechanism is interlocked with locking means such as a mechanical key cylinder or an electric communication device.

  On the other hand, the front seat 9b can be removed only after the rear seat 9a is removed. By removing the front seat 9b, it becomes possible to access the relatively high-voltage battery 2 disposed below the front seat 9b, and maintenance and the like can be performed. It becomes possible.

  Here, for example, the battery 2 is provided with a breaker (not shown) for connecting and disconnecting the connection between the single batteries 2a. The breaker is disposed below the rear seat 9a and can be connected and disconnected by removing the rear seat 9a. Thus, before the battery 2 can be accessed (before the front seat 9b is removed), it is possible to invite the breaker to connect and disconnect the voltage of the battery 2.

  In addition, although it is good also as a structure which requires a tool, unlocking operation, etc. for the removal operation | work of the front sheet | seat 9b, it is desirable that a big man-hour is unnecessary. In addition, the restriction release of the removal of the front seat 9b and the breaker connection / disconnection operation are linked to prohibit or disable the restriction release before cutting the breaker, and permit or enable the restriction release only after the breaker is cut. If it is set as the structure to carry out, the breaker cutting | disconnection can be performed reliably before the access to the battery 2. FIG.

  Here, in the modification shown in FIGS. 9 and 10, the front and rear sheets 9 a and 9 b are integrated into a long sheet 46. In this case, an inner cover 48 separated from the bottom plate 47 of the long sheet 46 is disposed above the battery 2. As with the rear seat 9a, the long seat 46 can be removed without operating a tool by operating a locking mechanism (not shown). By removing the long seat 46, it is possible to access the electrical components for the battery disposed below the rear portion. In addition, the inner cover 48 disposed below the front portion can be accessed. Further, by removing the inner cover 48, it is possible to access the battery 2 having a relatively high voltage disposed below the inner cover 48.

As with the front seat 9b, the inner cover 48 may be configured to require a tool, an unlocking operation, or the like for the removal work, but it is desirable that a large number of man-hours are unnecessary. In addition, the restriction release of the inner cover 48 removal and the breaker connection / disconnection operation are linked to prohibit or invalidate the restriction release before cutting the breaker, and permit or enable the restriction release only after the breaker is cut. It is good also as composition to do.
In FIG. 10, instead of the cross member 13 d between the left and right main frames 13, a protrusion 13 e that protrudes inward of the vehicle body is appropriately provided at the lower edge of the left and right main frames 13, and the battery 2 is supported on the protrusion 13 e. ing.

As described above, the saddle-ride type electric vehicle 1 according to the above embodiment has the driving battery and the battery electrical components (the charger 32, the contactor 25, the converter 27, and the sub-battery 28) below the passenger seat 9. ), And the battery 2 and the battery electrical parts are arranged so as to face the lower surface of the seat 9.
According to this configuration, the battery 2 and the battery electrical components can be accessed by simply detaching the seat 9 while the battery 2 and the battery electrical components are concentrated under the seat 9, and the maintainability of the battery 2 and the battery electrical components can be improved. Can do.

Further, the saddle riding type electric vehicle 1 is divided into a front seat 9b located above the battery 2 and a rear seat 9a located above the battery electrical component, and the front seat 9b can be removed only when the rear seat 9a is removed.
According to this configuration, access to the battery component with a relatively low voltage is possible only by removing the rear seat 9a, and access to the battery 2 with a relatively high voltage further requires removal of the front seat 9b. Thereby, the access control to the battery 2 can be strengthened.

In the saddle-ride type electric vehicle 1, the seat 9 is integrally provided over the battery 2 and the battery electrical component, and an inner cover 48 separated from the seat 9 is provided above the battery 2. Is to be arranged.
According to this configuration, it is possible to access the electrical components for the battery at a relatively low voltage only by removing the seat 9, and the access to the battery 2 at a relatively high voltage requires further removal of the inner cover 48. Thus, access restrictions to the battery 2 can be strengthened.

The present invention is not limited to the above-described embodiment. For example, the saddle-ride type electric vehicle 1 includes all vehicles that straddle a vehicle body, and includes not only motorcycles but also three-wheelers (front one wheel and rear wheel). In addition to a two-wheel vehicle, a front two-wheel vehicle and a single rear wheel vehicle are also included.
And the structure in the said embodiment is an example of this invention, and it cannot be overemphasized that a various change is possible in the range which does not deviate from the summary of the said invention.

1 Saddle-ride type electric vehicle 2 Battery for driving 9 Seat 9a Rear seat (second seat)
9b Front sheet (first sheet)
25 Contactor (battery electrical parts)
27 Converter (battery electrical parts)
28 Sub-battery (battery electrical parts)
32 Battery charger (electric parts for batteries)
46 Long sheet (sheet)
48 Inner cover

Claims (4)

A saddle-ride type electric vehicle (1) in which a drive battery (2) and battery electrical components (32, 25, 27, 28) are arranged below a seat (9, 46),
A saddle-ride type electric vehicle characterized in that the drive battery (2) and battery electrical components (32, 25, 27, 28) are arranged so as to face the lower surface of the seat (9, 46).   The battery electrical component (32, 25, 27, 28) includes at least one of a charger (32), a contactor (25), a converter (27), and a sub-battery (28). The saddle-ride type electric vehicle described in 1.   The sheet (9) covers the upper part of the driving battery (2) and the second sheet (9a) covers the upper part of the battery electrical parts (32, 25, 27, 28). The saddle-ride type electric vehicle according to claim 1 or 2, wherein the first seat (9b) is removable only when the second seat (9a) is removed. The seat (46) is integrally provided over the drive battery (2) and the battery electrical components (32, 25, 27, 28), and is separated from the seat (46). Is disposed above the driving battery (2), the saddle-ride type electric vehicle according to claim 1 or 2.

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