Summary of the invention
Therefore, the object of the present invention is to provide the accumulator configuration structure in a kind of elec. vehicle, it can eliminate the problem that above-mentioned prior art has, and can improve the commonality of battery case and can effectively keep the weight balancing of elec. vehicle.
In order to solve above-mentioned problem, in the accumulator configuration structure of elec. vehicle of the present invention, this elec. vehicle has: power produces motor, control the control part that this power produces the driving of motor, take in a plurality of battery cells and produce the battery case of motor power supply to described power, this accumulator configuration structure is characterised in that, in described battery case, across the car body line of centers that extends at the car body fore-and-aft direction, left and right symmetrically is transversely arranged to dispose a plurality of battery cells, be formed with the space that to take in a described battery cell at least in the both sides of a group storage battery unit, in this space,, a group storage battery unit is provided with partition so that concentrating on the mode of car body line of centers.
In said structure, dispose in the mode that concentrates on the car body line of centers as the battery cell of weight, thereby keep the weight balancing of elec. vehicle effectively.
In addition, because the partition that battery case is configured in the large space that can take in battery cell is separated,, then in this space, can dispose battery cell if pull down partition, thereby can take in the battery cell of multiple quantity, the commonality of battery case improves.
The present invention is characterized in that in the accumulator configuration structure of above-mentioned elec. vehicle described partition is disposed at the vehicle-width direction outside.
According to said structure, battery cell disposes in the mode that concentrates on the car body line of centers, thereby can effectively keep the weight balancing of elec. vehicle.
The present invention is characterized in that in the accumulator configuration structure of above-mentioned elec. vehicle described partition is made of the liner that forms the shape in the described space of packing into.
According to said structure, can substitute liner and take in battery cell owing to constituting, so can take in the battery cell of various quantity.
The present invention is characterized in that in the accumulator configuration structure of above-mentioned elec. vehicle described battery cell integral body is essentially rectangular, and is configured to the fore-and-aft direction that its length direction points to vehicle.
According to said structure, the narrowed width of the vehicle-width direction of battery case, thus, the leap during vehicle parking (striding ぎ) improves.
According to the present invention, the mode that concentrates on the car body line of centers that extends at the car body fore-and-aft direction with battery cell disposes partition, thus, concentrates on the car body line of centers as the battery cell of weight, so can effectively keep the weight balancing of elec. vehicle.
In addition, can substitute partition and take in battery cell,, can improve commonality so can storage battery electric capacity as required change the quantity of battery cell owing to battery case constitutes.
By partition being disposed at the vehicle-width direction outside, thus, battery cell disposes along the car body line of centers, so can effectively keep the weight balancing of elec. vehicle.
By constituting partition by the liner that forms the shape in the described space of packing into, thus, constitute and can substitute liner and take in battery cell, so can storage battery electric capacity as required change the quantity of battery cell, commonality improves.
Battery cell integral body is formed essentially rectangular, and battery cell is configured to its length direction points to the car body fore-and-aft direction, thus, so the narrowed width of the vehicle-width direction of battery case is the leap can improve vehicle parking the time.
The specific embodiment
Below, with reference to the electric bicycle of an example of the elec. vehicle of the description of drawings embodiment of the invention.In addition, in the following description, up and down, all around direction is the direction of seeing from the driver.
Fig. 1 is that (Electric Vehicle: lateral plan elec. vehicle), Fig. 2 are its birds-eye vieies for the battery traction formula electric bicycle of the embodiment of the invention.In addition, in Fig. 2, for convenience of explanation, omitted seat rail 8, mudwing cover 21, the stretcher base plate 10 of Fig. 1 record.
As shown in Figure 1, the vehicle frame F of electric bicycle (elec. vehicle) 1 has at front end: the front fork 2 of axle supporting front-wheel WF, can support the steering tiller 3 that links with this front fork 2 with turning to manage 5.In addition, vehicle frame F has: center am rest 6, after-frame 7 and seat rail 8.As shown in Figure 2, these 6,7,8 constitute a pair of respectively at width over sides of car body direction left and right symmetrically.
Center am rest 6 is by following component set-up: the rake 6a that is provided with and extends to the oblique downside in car body rear of linking to each other with above-mentioned head pipe 5, the lower end bending of this rake 6a and approximate horizontal to the horizontal part 6b of car body rear extension.In addition, as shown in Figure 2, center am rest 6 is by in the vehicle-width direction transverse member 6c that the 6b of left and right horizontal portion links being linked.
In addition, after-frame 7 has as lower member: the first rake 7a that extends to the oblique upside in car body rear from the rear end of the horizontal part 6b of center am rest 6; The second rake 7c that extends to the oblique upside in car body rear with the gradient milder from curve 7b than the first rake 7a in the rear end bending of this first rake 7a.In addition, as shown in Figure 2, the second rake 7c is by linking about the transverse strands 7d of vehicle-width direction extension.
And, seat rail 8 constitutes and is installed on the roughly reverse U shape of after-frame 7 upsides, and has as lower member: the rake 8a that extends to the oblique upside in car body the place ahead from the curve 7b of after-frame 7, rearward be horizontal part 8b that on even keel extends from the upper end of this rake 8a, from the rear portion of this horizontal part 8b towards second rake 7c of after-frame 7 and the oblique support 8c that extends of downside rearward.
As shown in Figures 1 and 2, at the horizontal part 6b of center am rest 6, details storage battery tectosome 9 described later is accommodated in accumulator box 19.This accumulator box 19 is to be installed by the form of the pair of right and left frame clamping of horizontal part 6b, and in lateral plan shown in Figure 1, the bottom surface of accumulator box 19 is positioned at the downside of horizontal part 6b.In addition, the transverse member 6c of center am rest 6 constitutes the shape of the central portion of width over sides of car body direction to the downside depression, and accumulator box 19 is fixed with the state of mounting on this transverse member 6c.
The part that disposes this accumulator box 19 is the part of so-called legroom S downside, and the upside of accumulator box 19 is used to stretcher base plate 10 coverings that the driver is put pin.
The box shape of the roughly cuboid of storage battery tectosome 9 is taken in by accumulator box 19 portion within it of forming.In the front of accumulator box 19, about be respectively equipped with and be used for extraneous air is taken into box in-to-in air leading-in conduit road 20.Be formed with the discharge orifice 20b of the extraneous gas discharge that will be taken in the back of accumulator box 19.
Thus, constitute and to utilize the extraneous gas air cooling battery cell that is taken into from introducing port 20a, and cooled air is discharged from discharge orifice 20b.
As shown in Figure 1, on after-frame 7, near itself and center am rest 6 bonded assembly connecting portions and be positioned at the downside of curve 7b, about be respectively equipped with to the outstanding pivot plate 11 in car body rear.On this left and right sides pivot plate 11, be provided with pivot 12 in the vehicle-width direction with connecting.The leading section of rocking arm 13 is installed, and rocking arm 13 is that rotate up and down at the center with this pivot 12 on this pivot 12.
Rocking arm 13 is linked by the second rake 7c of the rear suspension 14 that is positioned at width over sides of car body direction left side with after-frame 7.In more detail, the upper end 14a of rear suspension 14 is installed on the second rake 7c of after-frame 7, and the bottom 14b of rear suspension 14 is installed on the rear portion of rocking arm 13.Thus, the up-down vibration of the trailing wheel WR that supports of the rearward end of utilizing this rear suspension 14 to be absorbed in rocking arm 13.
At the front side of rocking arm 13 leading section, the 13b of rotating support portion that is rotatably installed on pivot 12 is provided with a pair of with the form of dividing right and left in the width over sides of car body direction.This rocking arm 13 under the state that is installed on pivot 12, from pivot 12 (13b of rotating support portion) in the mode of avoiding trailing wheel WR after oblique left side ground, car body rear extends, extend to the car body rear along the left side of trailing wheel WR always.Be provided with the hind axle 17 that extends in the vehicle-width direction at the rear portion of this rocking arm 13, rotating freely on this hind axle 17, cantilever support (Chi さ れ Ru is held by the side) has trailing wheel WR.
In addition, in Fig. 1 and Fig. 2, Reference numeral 41 is the head lamps, the 42nd to the irradiation of car body the place ahead, is installed on the passenger seat, the 43rd of the horizontal part 8b of seat rail 8, is installed on the stoplight stop lamp, the 44th of the rearward end of after-frame 7, is positioned at the parasite of this stoplight stop lamp downside.
Fig. 3 is the III-III section-drawing of Fig. 1, is the birds-eye view of representing rocking arm 13 with monomer.In addition, Fig. 4 is the left side view (figure that sees from the A direction of Fig. 3) of Fig. 3, and the state behind the left side cover of putting down in writing among Fig. 3 26 is pulled down in expression.And Fig. 5 is the figure of Fig. 3 that (the B direction of Fig. 3) seen from the car body front side.
As shown in Figure 3, rocking arm 13 combination constitutes as lower member: have the body 25 of the partition wall 25a that extends at the car body fore-and-aft direction, the left side cover 26 that covers the left surface of this body 25, the right side that covers the right flank of this body 25 and cover 27.
The air that is formed with the apparatus installing space 23 that is positioned at car body left side (the car body outside) in the inside of rocking arm 13 and is positioned at car body right side (body inner side) is sent into 24 these two spaces, space.These spaces 23,24 are separated about the width over sides of car body direction by above-mentioned partition wall 25a, and the morphosis to extend at the car body fore-and-aft direction.
In addition, the left surface of apparatus installing space 23 is plugged by utilizing bolt etc. that above-mentioned left side cover 26 releasably is installed, and air is sent into the right flank in space 24, similarly is plugged by utilizing bolt etc. that above-mentioned right side cover 27 releasably is installed.
In apparatus installing space 23, take in and be useful on PDU (control part) 18 (the Power Drive Unit: Motorized drive unit) that the power that drives trailing wheel WR produces motor 16 and is used to control this power generation motor 16.Power produces motor 16 and PDU18 can safeguard by pulling down left side cover 26.
As shown in Figure 3, power produces motor 16 and is disposed at the rear portion of rocking arm 13, and releasably is installed on the power generation motor installation portion 33 that forms at partition wall 25a.The axle drive shaft 16a that power produces motor 16 disposes with the hind axle 17 almost parallel ground of trailing wheel WR, its perforation partition wall 25a and send into space 24 sides to air from apparatus installing space 23 is side-prominent.On this axle drive shaft 16a, be provided with driven wheel 29, itself and reducing gear 30 engagements of being located on the hind axle 17.Diameter group is little mutually with reducing gear 30 for this driven wheel 29, with the form of carrying out the one-level deceleration propulsive effort that power produces motor 16 is sent to hind axle 17.
In addition, on body 25, gear cover 34 is installed in the mode that covers power transmission section branches such as this driven wheel 29, reducing gear 30.This gear cover 34 is that propulsive effort that will dispose above-mentioned power transmission section is divided transmits space 31 and air is sent into the parts that separate in space 24, and it transmits space 31 inner sealings with this propulsive effort, and can be in propulsive effort transmits space 31 the circulation supplying lubricating oil.
In addition, on gear cover 34, be provided with the pin parts 36 that are used to install drum brake mechanism unit 35.This drum brake mechanism unit 35 moves by the brake-applying handle 39 that operation is installed on left side steering tiller 3.In detail, by the operation of brake-applying handle 39, via brake cable pull shown in Figure 4 37, brake rod 38 rotates, and the pin parts 36 that are installed on brake rod 38 are operated, thus, and the drg work of trailing wheel WR.
As shown in Figures 2 and 3, PDU18 is disposed at the front side that power produces motor 16, and utilizes bolt etc. releasably to be installed on the PDU attachment face 32 that partition wall 25a forms.In the inside of this PDU18, take in not shown driving circuit, cond, radiator etc.
In addition, PDU18 constitutes via not shown distribution and is connected with storage battery tectosome 9, transmits electric power to PDU18 from storage battery tectosome 9.In addition, PDU18 constitutes and also utilizes distribution and not shown ECU (Electric Control Unit: power control unit) be connected, carry control signal from ECU to PDU18 such as storing control program.And PDU18 constitutes also and is connected via not shown distribution and power generation motor 16, produces motor 16 from PDU18 to power and transmits electric power and control signal.In addition, above-mentioned ECU is installed on the car body side.
These driving circuits of PDU18 etc. are compared heating more with other parts.Therefore, this PDU18 with the PDU attachment face 32 of big as far as possible area and partition wall 25a near and be mounted, make heat conduct heat and dispel the heat to partition wall 25a by generations such as driving circuits.
On the other hand, send into space 24 at air, a plurality of radiating gills 40 are outstanding from partition wall 25a, thus, further transmit to radiating gill 40 to the heat that partition wall 25a transmits from PDU18.
Send into space 24 at this air, be formed with the 13a of front openings portion at its leading section.At the 13a of this front openings portion, be equipped with and be used for that air is sent to air and send into cooling fan 22 in the space 24.In lateral plan shown in Figure 1, this cooling fan 22 is disposed between above-mentioned accumulator box 19 and the PUD18, and also has the function that accumulator box 19 in-to-in air are sucked from discharge orifice 20b.Promptly, the 13a of front openings portion of the discharge orifice 20b of accumulator box 19 and rocking arm 13 is roughly consistent in width over sides of car body direction and short transverse, and it is relative to be configured to each opening, and thus, the air of discharging from discharge orifice 20b utilizes cooling fan 22 to be taken into effectively the 13a of front openings portion.
In addition, the part that power produces motor 16 that is equipped with at partition wall 25a is formed with the pore of air being sent into space 24 and 23 connections of apparatus installing space.Thus, the air that is taken into from the 13a of front openings portion flows through air send into space 24 after, flow in power produces motor 16 from above-mentioned pore, after air cooling is carried out in the inside of power generation motor 16, discharge to atmosphere.
In addition, these power produce the swing that motors 16, PDU18 and cooling fan 22 constitute with rocking arm 13 and as one man swing up and down with trailing wheel WR.
In addition, as shown in Figure 5, at the downside of rocking arm 13, the installation portion 46 that is used to support main support 45 is formed with a pair of with the form of dividing right and left in the width over sides of car body direction.Thus, main support 45 constitutes and utilizes the mount pin 46b (with reference to Fig. 1) of the mounting hole 46a that inserts installation portion 46 to be installed on rocking arm 13, and with rocking arm 13 swings.
Fig. 6 is the section-drawing of the above-mentioned accumulator box 19 of expression.
Mode under hanging is supported on the horizontal part 6b of center am rest 6 to accumulator box 19 to utilize the support column 19a that linked by bolt 51.Support column 19a is bent into the font of falling Ω with banded steel plate and forms, and as shown in Figure 1, is equipped with three at the car body fore-and-aft direction altogether across appropriate intervals.
As shown in Figure 6, accumulator box 19 has as lower member and constitutes: box body 19c, stop up this box body 19c top lid 19b (with stretcher 10 for a part).Box body 19c forms the roughly box-shaped of opened upper end, clips a plurality of buffer units 52 and dispose between itself and support column 19a.Lid 19b forms the roughly box-shaped of lower open, utilizes a plurality of bolts 51, is fixed in the horizontal part 6b of center am rest 6 in the lump with above-mentioned support column 19a.
If lid 19b is fixed in the horizontal part 6b of center am rest 6, then covers the protuberance 19d of 19b and the recess 19e butt of box body 19c, thereby form the space D that surrounds by lid 19b and box body 19c.Between this protuberance 19d and recess 19e, dispose sealing element 53, sealing parts 53 are close to protuberance 19d and recess 19e, thereby prevent that rainwater etc. from invading in the D of space.State on the implementation in the space D after the water-proofing treatment and taken in storage battery constituting body 9.
Storage battery constituting body 9 has at two battery cases 61,61 of car body fore-and-aft direction alignment arrangements and constitutes.In addition, as shown in Figure 2, in this electric bicycle 1, the center of gravity G of car body is positioned on the car body line of centers C, and between the pars intermedia of the first rake 7a of the rear end of the rake 6a of center am rest 6 and after-frame 7 roughly in the middle of, these two battery cases 61,61 are to be disposed on the car body line of centers C in the distance mode about equally of car body fore-and-aft direction apart from this center of gravity G.
As shown in Figure 6, each battery case 61 is accommodated in the box body 19c, and this box body 19c is installed on support column 19a via buffer unit 52, and the vibration of electric bicycle 1 is cushioned parts 52 absorptions and is difficult to be delivered to battery case 61.Each battery case 61 forms the case shape of opened upper end, in the inboard of each battery case 61, takes in six battery cells 62 that form essentially rectangular respectively altogether near central portion.
That is, battery cell 62 is across the transversely arranged configuration of car body line of centers C (with reference to Fig. 2) left and right symmetrically of extending at the car body fore-and-aft direction.This battery cell 62 is a lithium ion battery, so long as can carry out the battery cell of charging and discharging, is not particularly limited, and for example, also can be Ni-MH battery etc.
In addition, the both sides at this group (six) battery cell 62 are formed with the space that can take at least one battery cell 62.In this space, taken in liner (partition) 63,63 respectively.These liners 63,63 for example form the shape roughly the same with battery cell 62.
As shown in Figure 6, these battery cells 62 and liner 63 in the D of space by top damper element 54 and 55 clampings of bottom damper element and dispose.Be formed with recess 55a on bottom damper element 55, battery cell 62 and liner 63 are inserted among this recess 55a, and thus, battery cell 62 and liner 63 bottoms are limited the mobile of width over sides of car body direction.According to this structure, battery cell 62 and liner 63 support mutually, mobile being limited in battery case 61.By liner 63 being disposed at the vehicle-width direction outside of battery case 61, thus, six battery cells 62 are concentrated and are fixed in car body line of centers C side.Therefore, dispose in the mode that concentrates on car body line of centers C, thereby keep the weight balancing of electric bicycle 1 effectively as six battery cells 62 of weight.
In other words, battery case 61 constitutes can take in eight battery cells 62, and battery case 61 is set at the roughly octuple of battery cell 62 at the width dimensions of vehicle-width direction at the width dimensions of vehicle-width direction.
Battery cell 62 constitutes the fore-and-aft direction of the length direction sensing car body of battery cell 62, thus, point to the situation of vehicle-width direction compares with the length direction that constitutes battery cell 62, because the narrowed width of the vehicle-width direction of battery case 61, so the leap can improve vehicle parking the time.
Taken in six battery cells 62 in battery case shown in Figure 6 61 altogether, this structure example is as being used to be equipped with the vehicle that free air capacity is the driving engine below the 50cc.For example, free air capacity surpasses 50cc and during for the vehicle of the driving engine of the following degree of 125cc, taken in eight battery cells 62 altogether in battery case 61 when being used to be equipped with.
Fig. 7 is illustrated in the birds-eye view of taking in the electric bicycle of eight battery cells 62 in each battery case 61.In addition, in Fig. 7, for convenience of explanation, seat rail 8, mudwing cover 21, stretcher base plate 10 have been omitted.
In each battery case 61 shown in Figure 7, alternative arrangements disposes battery cell 62 in the above-mentioned liner 63 in the vehicle-width direction of battery case 61 outside, and takes in foldable maximum quantity (eight s') battery cell 62.In this structure, similarly, battery cell 62 supports mutually, mobile being suppressed in battery case 61.
Like this, each battery case 61 can be taken in from foldable maximum quantity and deduct battery cell 62 after two when being used for more small-sized vehicle, and two liners 63,63 are set in the both sides of six battery cells.
In the present embodiment, can change the quantity of the battery cell of taking in 62 and do not change the size of battery case 61.Consequently, this battery case 61 can be used instead in the vehicle that varies in size, and commonality is good.
Explanation as previously discussed, according to present embodiment, by constituting partition by the liner 63 that is positioned at 62 both sides, a group storage battery unit, this liner constitutes the shape in the space that can take at least one battery cell 62 of packing into, thus, can substitute liner 63 and take in battery cell 62 because of constituting, so can storage battery electric capacity as required change the quantity of battery cell 62, the commonality of battery case 61 improves.In addition, battery cell 62 integral body are formed essentially rectangular, and battery cell 62 is configured to its length direction points to the car body fore-and-aft direction, thus, so the narrowed width of the vehicle-width direction of battery case 61 is the leap can improve vehicle parking the time.In addition and since as the battery cell 62 of weight near and concentrate on the car body line of centers C that extends at the car body fore-and-aft direction, so the balance raising.
Wherein, the foregoing description is a form of the present invention, in the scope that does not break away from purport of the present invention, self-evidently suitably changes.
For example, in the above-described embodiments, storage battery constituting body 9 is made of two battery cases 61,61, but also can be made of the battery case more than three, in addition, also can be made of a battery case.Liner 63 forms the shape roughly the same with battery cell 62, as long as but have with the width dimensions of the vehicle-width direction of battery cell 62 about equally width dimensions and constitute and a plurality of battery cells 62 can be concentrated on car body line of centers C and carry out fixed shape, also can be section H type, section I type etc., do not limit especially.
In addition, in the above-described embodiments,, exemplify electric bicycle 1 and be illustrated, but the invention is not restricted to cart, also applicable to three-wheel vehicle etc. as elec. vehicle.
(second embodiment)
Then, with reference to Fig. 8 second embodiment is described.
In the electric bicycle 1 of first embodiment, in battery case 61, take in from foldable maximum quantity and deduct battery cell 62 after a plurality of, in this case, liner 63 is accommodated in the vehicle-width direction outside of battery case 61, but in a second embodiment, substitute liner 63 and taken in separator of battery plates (partition) 163.
Wherein, this electric bicycle 1 has the separator of battery plates 163 except that alternative liner 63, has the structure roughly the same with the electric bicycle that illustrates 1 in first embodiment, therefore, in a second embodiment, the formation identical with electric bicycle 1 marked same Reference numeral and omit explanation.
Fig. 8 is the birds-eye view that is illustrated in the electric bicycle 1 of taking in six battery cells in each battery case.In addition, for ease of explanation, in Fig. 8, seat rail 8, mudwing cover 21, stretcher base plate 10 have been omitted.
Electric bicycle 1 has storage battery constituting body 90, and storage battery constituting body 90 has two battery cases 161,161 in car body fore-and-aft direction alignment arrangements.On the front of each battery case 161 161a and back 161b, be provided with the groove or the frame (not shown) that are used to insert separator of battery plates 163.This frame is disposed between recess 55a and the recess 55a.This battery case 161 has roughly the same structure with the battery case 61 that illustrates in first embodiment except that having this frame.
In battery case shown in Figure 8 161, take in the battery cell 62 that deducts the quantity (six) after a plurality of (two) from foldable maximum quantity (eight).
This structure example is as being used for being equipped with the vehicle that free air capacity is the driving engine below the 50cc.At this moment, six battery cells 62 concentrate on car body line of centers C and dispose.Because battery case 161 constitutes and can take in eight battery cells 62, so in the both sides of this group (six) battery cell 62, be formed with the space that can take at least one battery cell 62.In this space, take in separator of battery plates 163,163 respectively.These separator of battery platess 163,163 form tabular, and are inserted into the frame that is used for inserting separator of battery plates 163 (not shown) that is provided with on battery case 161.
When these separator of battery platess 163,163 are inserted in the battery case 161, then the outside of they and six battery cells 62 in abutting connection with and dispose, thereby play the effect that six battery cells 62 is concentrated on car body line of centers C and fix.Therefore, dispose in the mode that concentrates on car body line of centers C, thereby can effectively keep the weight balancing of electric bicycle 1 as the battery cell 62 of weight.
For example, free air capacity surpasses 50cc and during for the vehicle of the driving engine of the following degree of 125cc, pull down separator of battery plates 163,163 when being used to be equipped with, in this space, for example as shown in Figure 7, also take in battery cell 62, in this battery case 161, taken in eight battery cells 62 altogether.Like this, each battery case 161 can be taken in from foldable maximum quantity and deduct battery cell 62 after two, when being used for full size vehicle when being used for more small-sized vehicle, the battery cell 62 of maximum quantity can be taken in, thereby the quantity of this battery cell 62 can be changed.Consequently, battery case 161 can be used instead in the vehicle that varies in size, so commonality is good.