TWI423893B - Scooter type vehicle - Google Patents

Description

Scooter type electric vehicle

The present invention relates to a scooter type electric vehicle including a lead storage battery as a power source for driving.

Heretofore, there has been known a quick-kilda type electric vehicle in which electric power is supplied to a drive motor by a self-driving battery to drive the drive motor (for example, refer to Patent Document 1). The scooter type electric vehicle is disposed at a position below the seat portion from the lower portion of the pedal portion between the steering handlebar and the seat, and is provided with a plurality of rectangular parallelepiped batteries.

[Advanced technical literature]

[Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. Hei 3-224887

As one type of storage battery, there is a lead storage battery which has an advantage of being inexpensive to manufacture compared with various batteries such as Ni-MH or Li-ion, but has a drawback that the battery itself is relatively large. Therefore, when a lead storage battery is used as a driving battery, and the lead storage battery is placed below the pedal portion as in the above-described conventional technique, the pedal portion is increased to affect the getting on and off the vehicle. Moreover, if a plurality of lead storage batteries are dispersed, the wiring will become long and the layout of other parts will also be affected.

Therefore, an object of the present invention is to reduce the pedal portion of the scooter type electric vehicle including the lead storage battery as the power source for driving, and to reduce the influence on the layout of other components.

In order to solve the above problems, the present invention employs the following means.

(1) That is, the scooter type electric vehicle of the present invention includes: a body frame having a descending frame portion extending from the head pipe toward the rear side in the front-rear direction of the vehicle, and a descending frame portion from the lower frame portion a lower end of the frame extending rearward of the vehicle in the front-rear direction; the seat is disposed on the rear side of the front-rear direction of the vehicle in comparison with the head pipe, and is provided for the rider to ride; the foot pedal is disposed on the head Between the tube and the seat, for the driver to place the foot; the drive motor for driving; and the driving lead battery to supply electric power to the drive motor; The vehicle body frame has an extended frame extending rearward from the front end of the vehicle toward the front and rear of the vehicle, and the plurality of driving lead storage batteries are arranged along the vehicle width direction to form a high voltage battery. The battery is supported by the extension frame, and is disposed only below the front end of the vehicle in the front-rear direction of the vehicle below the seat, and the foot pedal is Placed at a lower surface than on the high pressure of the battery locations.

Furthermore, the above-mentioned Scooter type electric vehicle includes all straddle type vehicles having a pedal portion, and includes not only two wheels but also three wheels (except for the first and second rounds, including the first two and the last rounds) ) or a four-wheeled vehicle.

(2) The scooter type electric vehicle according to the above (1), further comprising a battery case that houses the high-voltage battery, and an article storage box that is disposed above the battery case and below the seat.

(3) The scooter type electric vehicle according to the above (1), wherein the high-voltage battery is disposed in the article storage box in a front-rear direction dimension in the front-rear direction of the vehicle.

(4) The electric motor vehicle of the above-described (1), wherein the high-voltage battery is extended in the plan view to the outer side of the vehicle seat in the vehicle width direction. In the high-voltage battery, at the outer side in the front-rear direction of the vehicle, a pedal for the passenger who is used for the rear passenger to place the foot is continuously provided from the foot pedal, and the vehicle body frame has a high-voltage battery extending to the high-voltage battery. The middle side of the vehicle is in the outer side of the vehicle width direction and supports the bicycle frame of the same passenger.

(5) The electric motor vehicle of the above-described (1), wherein the extension frame passes through the lower side of the high-voltage battery and extends to the rear of the vehicle in the front-rear direction, The vehicle body frame is a pair of left and right rear frame that rises upward from the rear end portion of the extended frame along the front and rear direction of the vehicle in the high-voltage battery, and constitutes a rocker arm portion of the vehicle body frame. The rear wheel is pivotally supported by the rear end portion, and the driving motor is accommodated therein, and the front end of the rocker arm is swingable in the high-voltage battery along the rearward and backward directions of the vehicle. Supported in the above rear frame.

(6) The scooter type electric vehicle according to the above aspect (1), wherein the vehicle body frame extends in the high-voltage battery from the front side in the front-rear direction of the vehicle toward the upper side, and simultaneously The sub-frame extending upward in the front-rear direction of the vehicle above the high-voltage battery, and the sub-frame covers the front surface and the upper surface of the high-voltage battery, and supports the article storage box provided on the high-voltage battery.

(7) The electric motor vehicle of the above-described (1), wherein each of the driving lead storage batteries is provided in parallel with each other in the vehicle width direction, and is connected in series with each other. Each of the driving lead storage batteries is disposed such that the positive electrode terminal and the negative electrode terminal are along the vehicle front and rear direction, and the positive electrode terminal and the negative electrode terminal are disposed in the vehicle front and rear direction between the adjacent ones in the vehicle width direction. In the positional reversal, the external connector of the first cable extending from the positive electrode terminal and the negative electrode terminal of the lead-acid battery for driving each of the above-mentioned driving lead batteries is housed in a battery case for storing the lead-acid batteries for driving. When the one side surface is exposed to the outside, the intermediate connector of the second cable that is located between the inner sides of the lead-acid batterys in the vehicle width direction is connected to the outside of the battery case. .

(8) The scooter type electric vehicle according to the above (1), wherein the rear end portion of the vehicle body frame is rotatably pivoted to the rear wheel and simultaneously by the vehicle body The front end of the frame is swingably supported by the rocker arm of the extended frame below the high voltage battery.

(9) The scooter type electric vehicle according to the above (1), wherein the vehicle includes a seat cover that covers a periphery of the lower side of the seat, and the extended frame passes through the high-voltage battery. Lower and extending to the rear of the vehicle in the front-rear direction of the vehicle, the vehicle body frame is disposed in the high-voltage battery along the front and rear direction of the vehicle, and has a rear end portion from the rear end of the vehicle toward the front and rear directions of the vehicle. Then, after the upper slanting rises, the front surface of the seat cover is disposed to be inclined upward in a side view toward the upper and lower sides of the vehicle in the front-rear direction, and the high-voltage battery is disposed in a side view along the front surface of the seat cover and The rear frame is inclined as described above.

(10) The scooter type electric vehicle according to (1) above, wherein the extension frame is configured such that the rear wheel is pivotally supported by the rear end portion thereof and the front end portion thereof is rotatably Swingingly supported by the rocker arm of the lower frame portion, at least a part of the high-voltage battery is disposed between the left arm and the right arm of the rocker arm and the left arm and the right arm, and further, the drive motor And its driver system is disposed in the rocker arm.

According to the scooter type electric vehicle described in the above (1), since the high-voltage battery is horizontally arranged in the vehicle body width direction below the seat, the high-pressure battery is disposed rearward of the front end of the seat. Thereby, the foot pedal can be lowered, and the area can be made larger. Further, by arranging a high-voltage battery composed of a plurality of lead-acid batteries for driving as a heavy object in the vicinity of the center of the vehicle body, the influence on the layout of other components can be reduced, and the quality can be improved. ) Focus on the center of the car body. Further, by using a high voltage battery composed of a plurality of lead storage batteries for driving, high-voltage driving power can be secured.

In the case of the above (2), the high-voltage battery composed of a plurality of lead-acid batteries for driving can be integrally gathered, and the assemblability and maintainability can be improved. Further, the space above the battery case can be used as an article storage space.

In the case described in the above (3), the article storage box can be provided by using the space between the high-voltage battery and the seat, and the article storage property can be ensured.

In the case described in the above (4), the outer side of the high-voltage battery is covered by the bicycle frame, whereby the high-voltage battery can be reduced from the force from the outside.

In the case described in the above (5), since the frame is extended below the high-voltage battery, it is possible to cause an external force to hardly affect the high-voltage battery. Moreover, since the swing support portion of the rocker arm is provided at a position where the high voltage battery does not overlap with each other in a side view, the swing shaft of the rocker arm can be prevented from passing through the high voltage battery and penetrated in the left-right direction (vehicle width direction). The rigidity around the pivot portion is raised, and the assembly of the rocker arm is well ensured.

In the case described in the above (6), the frame member can surround not only the lower surface and the rear surface of the high voltage battery but also the front surface and the upper surface of the high voltage battery. Further, since the sub-frame can double as the support bracket of the article storage box, the number of parts can be reduced.

In the case of the above (7), the external connector of the first cable extending from the positive terminal and the negative terminal of the lead-acid battery for driving outside the vehicle width direction is disposed on one side of the battery case, and the connection is also located. The intermediate connector of the second cable between the lead storage batteries for driving the inner side in the vehicle width direction is disposed on the same side as each of the external connectors, so that when the high voltage battery is taken out, the intermediate connector can be cut to make the voltage half The work of removing the external connectors on both sides is performed in the same direction, thereby improving maintenance.

In the case of the above (8), since the swing axis of the rocker arm is located below the high voltage battery, the length of the rocker arm can be secured, and the cushioning property can be improved.

In the case of the above (9), by arranging the high-voltage battery along the front surface of the seat cover and the rear frame, it is possible to make the space around the high-voltage battery less likely to generate useless space.

In the case of the above (10), by arranging the high voltage battery, the drive motor, and the driver in the rocker arm, the wiring loss between the two can be minimized.

Hereinafter, each embodiment of the scooter type electric vehicle of the present invention will be described with reference to the drawings. In addition, in the following description, the orientation of the front, rear, left, and the like is the same as the orientation of the scooter type electric vehicle unless otherwise specified. Further, an arrow FR in the figure indicates the front of the vehicle, an arrow LH indicates the left side of the vehicle, and an arrow UP indicates the upper side of the vehicle.

[First Embodiment]

The scooter type straddle type vehicle (the straddle type vehicle) 1 shown in FIGS. 1 to 5 includes a pedestal seat provided for the steering handlebar handlebar 2 and the occupant (hereinafter, simply referred to as The lower foot pedal 4 between the seat bases 3 and the vehicle body outer casing 5 substantially covering the entire vehicle body. Further, one of the dot chain lines CL in each figure indicates the center line of the vehicle body in the left-right direction.

A battery unit 6 is mounted at a position behind the footrest 4 of the motorcycle 1. The drive motor 8 located near the rear wheel 7 is driven by the electric power from the battery unit 6, and by the driving force, the rear wheel 7 is driven as the drive wheel, so that the motorcycle 1 can be driven. That is, the motorcycle 1 is configured as an electric vehicle.

The body frame 11 of the motorcycle 1 is integrally joined to a plurality of steel materials by welding or the like, and has a head pipe 12 that rotatably supports the front wheel suspension system at the front end portion thereof, and is provided at the lower rear side at the lower end side. The pivot portion 13 of the rear wheel suspension system is supported by the up and down swing.

The front wheel suspension system includes a left and right front fork 15 that pivots the front wheel 14 at a lower end portion, a bridge member 16 that fixes between the upper ends of the left and right front forks 15, and a center portion extending from the left and right direction of the bridge member 16. Steering tube 17 to the top.

The steering tube 17 penetrates into the head tube 12 from below thereof in a relatively rotatable manner. Then, the upper end portion of the steering tube 17 protrudes above the head pipe 12, and the above-described lever handlebar 2 is fixed thereto.

The rear wheel suspension system is provided with a rocker arm 18 that pivots the rear wheel 7 at the rear end portion as a main component. The rocker arm 18 is formed by integrally connecting the front portions of the left and right arms. The rear end portion of the left arm constitutes a swinging unit that drives the drive motor 8 for driving and the gear mechanism 19 that decelerates the driving force from the drive motor 8. The rear end of the rocker arm 18 is elastically supported by the rear end portion of the body frame 11 via the left and right cushioning unit 21. The rocker arm 18 forms part of the body frame 11.

The body frame 11 includes: the head pipe 12, the front end portion of the body frame 11 is disposed, and the upper portion is inclined toward the rear; the main frame tube 22, the upper portion (front end) is joined to the rear surface of the head tube 12; The front cross tube 23, the front side of the left and right intermediate portions is joined to the lower portion (rear end) of the main frame tube 22; the left and right extended frame tubes (hereinafter, simply referred to as the extended frame) 24, and the front end is joined to the front cross tube 23 Left and right side rear side; rear cross tube 25, left and right side front side joined to the rear end of the left and right extension frame 24; left and right pair of rear frame tubes (hereinafter, simply referred to as rear frame) 26, front (lower end) joint On the upper side of the left and right end portions of the rear cross tube 25, and the left and right pedal brackets 27 are disposed between the two sides of the lower portion of the main frame tube 22 and the outer side of the front portion of the left and right rear frame 26.

The main frame tube 22 is formed of, for example, a circular steel pipe, and integrally includes a descending frame portion 22a extending obliquely rearward and downward from a surface of the head pipe 12 made of a cylindrical steel material, and a descending frame portion from the lower frame portion The lower end of 22a is curved to extend rearwardly toward the rear frame portion 22b. A baffle 22c is disposed between the lower surface of the lower portion of the head pipe 12 and the upper front surface of the lower frame portion 22a. The lower intermediate portion of the lower frame portion 22a is gradually curved so as to be convex toward the rear, and finally is lowered toward the lower portion of the lower portion of the frame portion 22a. Therefore, the space for the occupant to place the foot is enlarged.

The front and rear cross pipes 23 and 25 are formed of, for example, a circular steel pipe, and are provided in a straight line along the vehicle width direction (left-right direction). At the left end of the front cross tube 23, a side post bracket 23a rotatably supporting a side stand 29a is attached. Further, a pair of left and right center pillar brackets 25a that rotatably support the center pillar 29b are attached to the rear portion of the rear cross tube 25.

The left and right extension frames 24 are formed of, for example, square steel pipes, and have a linear shape in the front-rear direction, and are further arranged to be parallel to each other and substantially horizontal. The upper surface of the frame 24 is extended to the left and right, and a flat support plate 24a extending to the outside in the vehicle width direction is attached. Further, the battery unit 6 is placed on the support plate 24a.

The left and right rear frame 26 is formed of, for example, a square steel pipe, and integrally includes an upper extension portion 26a extending substantially perpendicularly from the rear cross tube 25, and a front side extending from the upper end portion of the upper extension portion 26a. Square extension 26b. A first cross tube 26c is placed between the upper and lower middle portions of the right and left upper extension portions 26a, and a second cross tube 26d is placed between the curved portions of the left and right rear frame 26. The cylindrical pivot portion 13 that axially supports the front end portion of the rocker arm 18 is joined to the rear side of the lower portion of the left and right upper extension portions 26a. Further, on the lower side of the rear portion of the left and right rear extension portions 26b, a cushion holder 28 that pivots the upper end portion of the cushion unit 21 is joined.

The left and right pedal brackets 27 include: left and right pedal bracket tubes 27a. After the lower portions of the lower portion of the autonomous frame tube 22 extend to the obliquely outer lower side, the curved extension extends to the oblique outer rear; the left and right pedal connecting tubes 27b are above the left and right rear frame 26. The extension portion 26a extends from the upper side in the lower direction to the outer side in the vehicle width direction, and the front end thereof is joined to the inner side of the rear end portion of the left and right pedal frame tubes 27a; and the pedal cross tube 27c is mounted on the front and rear portions of the left and right pedal bracket tubes 27a. between. Each of the tubes 27a to 27c is made of, for example, a circular steel tube.

The base end of the left and right pedal connecting tubes 27b is joined to the outer side of the upper extending portion 26a.

The left and right pedal bracket tubes 27a are formed in a bilaterally symmetrical shape with each other, and are integrally provided with a rearward ascending inclination. The rear portion of the left and right pedal bracket tubes 27a is curved so as to be displaced upward from the front portion thereof so as to have a crank shape in a side view. Further, a linear pedal cross tube 27c in the left-right direction is disposed at a position directly in front of the curved portion of the crank shape.

The left and right intermediate portions of the pedal cross tube 27c are supported by the upper and lower extension frames 24 via the left and right pedal support brackets 27d. The rear end portion (the left and right pedal connecting tube 27b) of the left and right pedal brackets 27 is located lower than the first cross tube 26c in the side view and is located above the pivot portion 13.

A seat 3 is disposed behind the head pipe 12 via the traverse space M. The seat 3 is integrally provided with a seating surface for the driver and the rear passenger, for example, and extends to the vicinity of the rear end portion of the vehicle body. The seat 3 also has the function of opening and closing the upper cover of the article storage box 39 located below it. Further, the reference numeral 3a in the drawing denotes a rotation shaft that rotatably connects the lower end portion of the front end portion of the seat 3 to the front end portion of the article storage box 39.

The vehicle body casing 5 includes a front cover 31 covering the periphery of the head pipe 12 and the descending frame portion 22a from the front, a front inner cover 32, a periphery of the head pipe 12 and the descending frame portion 22a from the rear, and a bottom cover 33. The lower frame portion 22b and the left and right pedal brackets 27 are covered from the lower side to the left and right outer sides; the footrest cover 34 covers the lower frame portion 22b and the left and right pedal brackets 27 from above and forms the above-described footboard 4; The center cover 35 rises from the rear portion of the footrest cover 34 toward the lower end of the front portion of the seat 3, and covers the battery unit 6 and the article storage box 39 above it from the front; and the left and right rear side covers 36 from the rear center cover 35 The left and right side portions continuously extend obliquely rearward and upward, and cover the upper portion of the left and right rear frame 26 from the outside under the both sides of the rear portion of the seat 3. These covers 31 to 36 are made of synthetic resin.

The footrest cover 34 includes: a footboard 4 (a front footrest for the driver) located between the front inner cover 32 and the rear center cover 35; and a rear footrest (the rear seater uses the foot after the foot) The portion 37 extends continuously toward the rear from both sides of the rear end thereof and protrudes toward the outer side of the battery unit 6. The footrest 4 is supported by the front portion of the left and right pedal brackets 27 and the frame portion 22b below the main frame tube 22. The rear footrest 37 is supported by the rear of the left and right pedal brackets 27.

As shown in FIG. 3, FIG. 4, and FIG. 7, the battery unit 6 is formed by arranging four 12 V lead batteries 6a in the vehicle width direction and connecting them in series to form a 48 V high voltage battery 6A. The high voltage battery 6A is housed in a single battery case 9.

As shown in Fig. 7, each lead battery 6a has a rectangular parallelepiped shape in plan view, and has a positive electrode terminal 41a and a negative electrode terminal 41b at both end portions of one of the long sides of the rectangular shape. When the positive electrode terminal 41a and the negative electrode terminal 41b are directed upward, the front and rear sides are arranged in the front and rear, and the long sides of the rectangular shape are brought into contact with each other, whereby the lead batteries 6a can be arranged in the vehicle width direction. Further, each lead battery 6a is disposed such that the positive electrode terminal 41a and the negative electrode terminal 41b of each lead battery 6a are different from each other in the front and rear positions of the adjacent lead batteries 6a.

Here, the lead battery 6a located on the inner side in the left-right direction of the high-voltage battery 6A is arranged such that the long sides where the terminals 41a and 41b are located are adjacent to each other in plan view, and are placed on the front side of the long sides. The positive electrode terminal 41a and the negative electrode terminal 41b are connected to each other via an intermediate cable 42. The intermediate cable 42 is provided with a circuit breaker 43, and the circuit breaker 43 is disposed so as to be exposed to the left and right intermediate portions on the front surface side of the upper portion of the battery case 9 having a rectangular parallelepiped shape (see FIG. 5). By the intermittent operation of the circuit breaker 43, the wiring of the intermediate portion of the high voltage battery 6A can be interrupted. Further, the intermediate cable 42 has a connector instead of the circuit breaker 43, and the wiring of the intermediate portion of the high voltage battery 6A can be interrupted (not shown) by the attachment and detachment of the connector.

The battery case 9 is composed of a case body 9a that is open at the upper side and a case cover 9b that blocks the upper opening thereof, but is not limited to such a box shape, as long as it includes a plurality of lead batteries 6a that can be connected by fastening to form a battery case. The battery connection means of the unit can be used. However, if the configuration is constituted by the case main body 9a and the cover 9b as described above, the lead battery 6a can be easily attached and detached and it is difficult to be soiled, and the battery case 9 can be used as an appearance part.

Further, external connectors 44 for external wiring corresponding to the positive electrode side and the negative electrode side of the high voltage battery 6A are disposed on the left and right sides of the upper surface side of the upper portion of the battery case 9 (see FIGS. 5 and 7).

That is, the output cable 46 is connected to the positive terminal 41a and the negative terminal 41b, which are located on the front side of each of the outermost lead batteries 6a. Further, the output cables 46 are led out from the left and right sides of the upper surface side of the upper portion of the battery case 9 to the outside of the battery case 9, and the external connectors 44 provided at the front ends are disposed on the front surface of the upper portion of the battery case 9. The left and right sides of the side.

As shown in Fig. 7, the lead battery 6a located on the left and right sides of the high voltage battery 6A is placed such that the long sides opposite to the long sides of the respective terminals 41a and 41b are placed in a plan view. Arranged in an adjacent manner, and the positive electrode terminal 41a and the negative electrode terminal 41b located on the rear side of the lead battery 6a are mutually connected via the left and right connection cables 45. A connection connector 45a is provided at an intermediate portion of each of the connection cables 45.

As shown in FIG. 3, FIG. 4, and FIG. 5, the battery unit 6 can be mounted on the support plate by the battery holding frame 61 which is L-shaped in a side view along the front surface and the upper surface thereof. The vehicle body frame 11 is fixed and held in the state of 24a (left and right extension of the frame 24). Then, the battery unit 6 is located directly in front of the left and right rear frames 26. Further, the battery unit 6 is held so as to be surrounded by the left and right extension frames 24, the left and right rear frames 26, and the battery holding frame 61. Further, on the left and right outer sides of the battery unit 6, rear portions of the left and right pedal brackets 27 which are inclined upward in the side view are disposed.

The battery holding frame 61 is mainly composed of, for example, a circular steel pipe, and the lower front side and the upper upper side thereof are fastened and fixed to the pedal cross tube 27c and the first cross tube 26c, respectively.

The battery holding frame 61 includes a front fastening bracket 61a fastened and fixed to an intermediate portion of the pedal cross tube 27c in the left-right direction, and a pair of right and left front frame tubes 61b extending above the front fastening bracket 61a; The tube 61c connects the upper end portions of the front frame tube 61b and extends to the outer side in the vehicle width direction; the pair of right and left upper frame tubes 61d extend from the left and right end portions of the upper cross tube 61c to the rear; The upper holding plate 61e connects the rear end frames of the upper frame tube 61d and extends to the outer side in the vehicle width direction; and the rear fastening bracket 61f connects the rear end portions of the upper frame tubes 61d to each other at the same time. It is fixed to the left and right intermediate portions of the first cross tube 26c. The upper holding plate 61e is formed in a flat shape along the upper surface of the battery unit 6, and its front and rear edge portions are curved along the front and rear corners of the upper surface of the battery unit 6.

A pair of right and left front case support brackets 39a for fastening the bottom front side of the article storage case 39 disposed on the battery unit 6 are fixed to the upper side of the front end portion of the pair of right and left upper frame tubes 61d. Further, on the upper side of the second cross tube 26d, a pair of right and left rear box support brackets 39b for fastening the bottom rear side of the article storage box 39 are fixed.

As shown in FIG. 6, the DC current of 48 V from the high voltage battery 6A is converted to a 3-phase alternating current via a PDU (power distribution unit) 47 (motor driver) in the control unit 47A, and then supplied to the DC current. The above-described drive motor 8 is a three-phase AC motor. Further, the DC current of 48 V is supplied to the ECU (Electronic Control Unit) in the control unit 47A after being stepped down to 12 V via a DC (direct current)-DC converter (hereinafter, simply referred to as a converter) 48. Control unit) 49 or common motor part 51. Furthermore, the component symbol C in FIG. 6 indicates a charger that is provided integrally or separately from the motorcycle 1.

A contactor 52 is interposed between the high voltage battery 6A and the PDU 47 and the negative side of the converter 48.

Contactor 52 is a relay circuit. One terminal of the switch 52a of the relay circuit is connected with an output cable 46 extending from the negative side of the high voltage battery 6A, and the other terminal of the switch 52a is connected to the second side of the negative side of the PDU 47 and the converter 48, respectively. The output cable 46a and the third output cable 46b. Further, one terminal of the coil 52b of the relay circuit is connected to the positive electrode side of one of the high-voltage batteries 6A via the main switch 53, and the other terminal of the coil 52b is kept grounded. Further, when the main switch 53 is turned ON (ON) and the current from the one lead battery 6a flows into the coil 52b, the switch 52a of the relay circuit is turned off, so that the current from the high voltage battery 6A flows to the PDU 47 and the converter. 48. Further, an output cable extending from the positive electrode side of the high voltage battery 6A is also indicated by reference numeral 46.

The combination will be described with reference to Fig. 7, and the control unit 47A is supported by the upper portions of the left and right rear frames 26. A converter 48, also supported by the upper portion of the left and right rear frames 26, is disposed behind the control unit 47A. The contactor 52 is disposed adjacent to the circuit breaker 43 adjacent to the front side of the battery unit 6, for example. Further, the reference numerals 53a in FIGS. 6 and 7 indicate the main switch wires that connect the main switch 53, the positive and negative electrodes of the one lead battery 6a, and further the contactor 52. Further, the reference numeral 48a denotes a unit connecting cable that connects the control unit 47A and the converter 48. Further, the component symbol 8a indicates a motor cable from the control unit 47A (PDU 47) to the drive motor 8. Further, the component symbols 46a and 46b are branched from the output cable 46 on the positive and negative sides of the high voltage battery 6A, and then reach the control unit 47A (PDU 47) and the second and third output cables of the converter 48, respectively.

The output cable 46 extending from the positive electrode and the negative electrode of the high-voltage battery 6A is collected on one side in the vehicle body width direction, and is wired to the rear PDU 47 and the converter 48.

As shown in FIG. 3 and FIG. 4, the left and right extension frame 24 of the body frame 11 extends in the front-rear direction at a rear position from the front end of the seat 3, and the battery unit 6 supported on the left and right extension frames 24 is supported. It is disposed below the seat 3 and is disposed only at the rear of the front end. Further, since the battery unit 6 has a predetermined height, the upper surface thereof can be positioned above the footboard 4 and the rear footrest 37.

Further, the front and rear direction dimensions of the battery unit 6 are set to be controllable in the front and rear direction dimensions of the article storage box 39 located below the front half of the seat 3. Moreover, the left and right widths of the battery unit 6 are set to be larger than the left and right widths of the seat 3, but are controlled within the left and right outer widths of the left and right pedal brackets 27, and are within the left and right outer widths of the left and right rear leg portions, and are controlled to the rear center cover. 35 and the inside of the curved side of the rear side cover 36.

As described above, the motorcycle 1 (speed-cable type electric vehicle) of the present embodiment includes a body frame 11 having a lower frame portion 22a extending from the head pipe 12 to the lower rear portion and the lower frame portion The lower end of 22a extends to the rear lower frame portion 22b; the seat 3 is located behind the head pipe 12 for the rider to ride; the footboard 4 is disposed between the head pipe 12 and the seat 3 for the rider to place The leg portion and the lead battery 6a supply electric power to the driving motor 8 for traveling. Further, the body frame 11 has an extension frame 24 extending rearward from the front end of the seat 3, and the lead battery 6a is arranged in plural in the vehicle width direction to constitute the high voltage battery 6A, and the high voltage battery 6A is extended by the vehicle. The frame 24 is supported, and the high-voltage battery 6A is disposed below the seat 3 and the front end of the seat 3 is disposed only at the rear side, and the foot board 4 is disposed at a position where the upper surface of the higher pressure battery 6A is lower.

According to this configuration, since the high-voltage battery 6A is disposed below the seat 3 and the front end of the seat 3 is disposed only at the rear side, the foot board 4 can be made lower and wider. Further, by arranging the high-voltage battery 6A composed of a plurality of lead batteries 6a as a heavy object in the vicinity of the center of the vehicle body, the influence on the layout of other parts can be reduced, and the mass can be concentrated in the center of the vehicle body. . Further, by the high voltage battery 6A composed of a plurality of lead batteries 6a, high-voltage driving power can be secured.

Further, in the motorcycle 1 of the present embodiment, a plurality of lead batteries 6a are housed in the battery case 9, and an article storage box 39 is provided below the battery case 9 and below the seat 3. According to this configuration, the high-voltage battery 6A composed of a plurality of lead batteries 6a can be integrated, and the assemblability and maintainability can be improved. Further, the space above the battery case 9 can be used as an article storage space.

Further, in the motorcycle 1 of the present embodiment, the high-voltage battery 6A is placed in the front and rear direction dimensions of the article storage box 39. According to this configuration, since the article storage box 39 can be provided by the space between the high-voltage battery 6A and the seat 3, the article storage property can be ensured.

Further, the motorcycle 1 of the present embodiment has a configuration in which the high-voltage battery 6A extends to the outside in the vehicle width direction of the seat 3 in a plan view, and is located outside the vehicle width direction of the high-voltage battery 6A. The foot pedal 37 is placed in a continuous manner for the rear passengers to place the foot rear portion, and the vehicle body frame 11 has a pedal bracket 27 that extends to the outside of the high-voltage battery 6A in the vehicle width direction while supporting the rear footrest 37. . According to this configuration, since the pedal bracket 27 can cover the outer side of the high voltage battery 6A, it is possible to reduce the influence of the force from the outside of the high voltage battery 6A.

Further, the motorcycle 1 of the present embodiment has a configuration in which the extension frame 24 extends below the high-voltage battery 6A and extends to the rear, and the body frame 11 has the rear end of the self-extension frame 24 after the high-voltage battery 6A. A pair of right rear frame 26 that rises upward, and a rocker arm 18 constituting a part of the body frame 11 rotatably pivots the rear wheel 7 at the rear end portion, and at the same time accommodates the drive motor 8 internally, and shakes The front end of the arm 18 is swingably supported by the rear frame 26 after the high voltage battery 6A.

According to this configuration, since the extension frame 24 passes under the high-voltage battery 6A, it is difficult for the ground impact force to spread to the high-voltage battery 6A. Further, since the swing support portion of the rocker arm 18 is provided at a position that does not overlap with the high-voltage battery 6A in a side view, the swing shaft of the rocker arm 18 can be passed through to the left and right while avoiding the high-voltage battery 6A, so that the pivot portion 13 can be raised. The rigidity of the surroundings ensures good assembly of the rocker arm 18 at the same time.

Further, the motorcycle 1 of the present embodiment has a configuration in which the vehicle body frame 11 has a battery holding vehicle that extends from the extension frame 24 to the upper side of the high voltage battery 6A and extends rearward of the high voltage battery 6A. The rack 61 holds the frame 61 covering the front surface and the upper surface of the high voltage battery 6A while supporting the article storage box 39 provided on the high voltage battery 6A.

According to this configuration, not only the lower frame surface and the rear surface of the high voltage battery 6A but also the front surface and the upper surface can be surrounded by the frame member. Further, by using the battery holding frame 61 as a support bracket for the article storage box 39, the number of parts can be reduced.

Further, the motorcycle 1 of the present embodiment has a configuration in which four lead batteries 6a are arranged in the vehicle width direction, and the high-voltage battery 6A is formed by connecting the batteries in series with each other, and each lead battery 6a is arranged in front and rear. The positive electrode terminal 41a and the negative electrode terminal 41b are disposed in the direction, and the front and rear positions of the positive electrode terminal 41a and the negative electrode terminal 41b are reversed between adjacent ones in the vehicle width direction. The external connector 44 of the output cable 46 extending from the positive terminal 41a and the negative terminal 41b in the vehicle width direction of the battery 6a is exposed from the side of the battery case 9 in which the lead battery 6a is housed, and is exposed outside the battery case 9. The circuit breaker 43 that connects the intermediate cables 42 between the lead cells 6a and the inner side in the vehicle width direction is similarly exposed from the side of the battery case 9 to the outside of the battery case 9.

In this configuration, the external connector 44 of the output cable 46 extending from the positive terminal 41a and the negative terminal 41b of the lead battery 6a located outside the vehicle width direction is disposed on one side of the battery case 9, and the connection is also located at the vehicle width. The circuit breaker 43 of the intermediate cable 42 between one of the inner sides of the lead battery 6a is disposed on the same side surface as each of the external connectors 44. As a result, when the high-voltage battery 6A is taken out, the cut-off circuit breaker 43 can be made half-time, and the operation of removing the external connectors 44 on both sides can be performed in the same direction, thereby improving the maintainability.

[Second Embodiment]

Next, a second embodiment of the scooter type electric vehicle according to the present invention will be described with reference to Figs. 8A and 8B.

The motorcycle 101 of the present embodiment differs from the first embodiment in that the pivot portion 13 is provided on the lower edge side of the left and right extension frame 24, and the pivot portion 13 is supported by the pivot portion 13 so as to be vertically swingable. Wheel suspension system. The same components as those in the above-described first embodiment are denoted by the same reference numerals, and their description will be omitted.

The rocker arm 118 which forms part of the above-described rear wheel suspension system of the present embodiment is not limited to the one described in the first embodiment, but has a known configuration including left and right arms, a pivot tube, and a horizontal frame. Further, in the motorcycle 101 of the present embodiment, a drive motor 108 as an in-wheel motor is disposed on the inner peripheral side of the rear wheel 7. Thereby, it is easy to ensure the gap between the rocker arm 118 and the extension frame 24 when the rocker arm 118 swings. Further, even if the left and right extension frames 24 are slightly inclined rearward, it is easy to secure the above gap.

Further, the rear end portion of the left and right extension frame 24 of the present embodiment is bent upward and integrally connected to the upper extension portion 26a of the left and right rear frames 26. That is, the left and right extension frame 24 and the left and right rear frame 26 are formed of an integral square steel pipe.

Further, the battery unit 6 is mounted on the right and left extension frames 24.

Similarly to the first embodiment, the battery unit 6 is disposed only below the seat 3 and at the front end of the seat 3, and is disposed at a position lower than the upper surface of the battery unit 6. There are foot pedals 4.

As described above, even in the motorcycle 101 of the present embodiment, similarly to the automatic two-vehicle 1 of the first embodiment, it can be biased only by the lower side of the seat 3 and the front end of the seat 3 The high-voltage battery 6A is disposed at the rear, and the footboard 4 is made low and wide, and the influence on the layout of other parts can be reduced, and the mass can be concentrated in the center of the vehicle body to ensure the driving power of the high voltage.

Further, in the motorcycle 101, the body frame 11 has a rocker arm that rotatably supports the rear wheel 7 at the rear end portion while the front end portion is swingably supported under the high voltage battery 6A on the extension frame 24. 118. As a result, the swing axis of the rocker arm 118 can be positioned below the high voltage battery 6A, thereby ensuring the length of the rocker arm 118 and improving the cushioning property.

[Third embodiment]

Next, a third embodiment of the scooter type electric vehicle according to the present invention will be described with reference to Fig. 9 .

The difference in the configuration of the first embodiment of the motorcycle according to the first embodiment is mainly that the left and right rear frames 26 have an upper extension portion 26a that is inclined so as to be rearward as it goes upward, and along the upper side. The battery unit 6 is disposed obliquely to the left and right extension portions, and the same portions as those of the above-described first embodiment are denoted by the same reference numerals, and their description will be omitted.

That is, the battery unit 6 of the present embodiment is disposed in an inclined posture in which the front portion is raised upward. In other words, the battery unit 6 is inclined in such a manner as to cover the front surface of the center cover 35 after covering the front thereof. Further, although the rocker arm 18 is used as the swinging unit in Fig. 9, the combination of the known rocker arm 118 and the in-wheel type drive motor 8 may be employed as in the case of the second embodiment.

As described above, even in the motorcycle 201 of the present embodiment, similarly to the motorcycle 1 of the first embodiment, it can be disposed below the seat 3 and the front end of the seat 3 is disposed only at the rear side. The high-voltage battery 6A makes the footboard 4 low and wide, and can reduce the influence on the layout of other parts, can concentrate the mass in the center of the vehicle body, and can ensure the driving power of the high voltage.

Further, the motorcycle 201 is configured to include a center cover 35 that covers the lower periphery of the seat 3, and the extended frame 24 extends rearward of the high voltage battery 6A to the rear, and the body frame 11 is attached to the high voltage battery 6A. After that, the rear frame has a frame 26 which is inclined rearwardly and upwardly from the rear side of the rear frame 24, and the front surface of the rear center cover 35 is inclined upward and upward in a side view, and the high voltage battery 6A is side. It is disposed obliquely along the front surface of the rear center cover 35 and the rear frame 26.

According to this configuration, by arranging the high voltage battery 6A along the front surface of the rear center cover 35 and the rear frame 26, it is possible to form a layout in which the use of the space around the high voltage battery 6A is less likely to occur.

[Fourth embodiment]

Next, a fourth embodiment of the scooter type electric vehicle according to the present invention will be described with reference to Fig. 10 .

The motorcycle according to the first embodiment differs from the first embodiment in that the front portion of the rocker arm 218 is configured to extend the front end of the seat 3 in the body frame 11 to the rear side. In the following, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and their description will be omitted.

That is, the battery unit 6 of the present embodiment is placed on the front portion of the right and left arms of the rocker arm 218 (the left and right extension frames 24), and can be swung up and down together with the rocker arm 218.

The rocker arm 218 has the same configuration as the rocker arm 108 of the second embodiment described above except for, for example, the rear portion of the left arm. The rear portion of the left arm is the same as the left arm of the rocker arm 18 of the swing unit of the first embodiment, and has a drive motor 8 and a gear mechanism 19 for driving at the rear end portion thereof, and the PDU 47 is provided, for example, on the upper side of the rear portion. Converter 48. Further, instead of this configuration, a combination of a known rocker arm 118 and an in-wheel type drive motor 108 may be employed as in the second embodiment described above. Further, reference numeral 113 in the figure denotes a pivot plate that pivots the front end portion of the rocker arm 218.

As described above, even in the motorcycle 301 of the present embodiment, similarly to the motorcycle 1 of the first embodiment, the high pressure is disposed only below the seat 3 and at the front end of the seat 3 only at the rear side. The battery 6A makes the footboard 4 low and wide, and the influence on the layout of other parts can be reduced, the mass can be concentrated in the center of the vehicle body, and the driving power of the high voltage can be ensured.

Further, the motorcycle 301 is configured such that the extension frame 24 is pivotally supported by the rear end portion while the front end portion is pivotally supported by the rocker arm of the lower frame portion 22b. 218 is configured such that at least a part of the high-voltage battery 6A is disposed between the right and left arms of the rocker arm 218 and the left and right arms, and the drive motor 8 and the driver (PDU 47) are disposed in the rocker arm 218.

According to this configuration, by collectively providing the high voltage battery 6A, the drive motor 8, and the PDU 47 to the rocker arm 218, the wiring loss between the two can be minimized.

[Fifth Embodiment]

Next, a fifth embodiment of the scooter type electric vehicle according to the present invention will be described with reference to Fig. 11 .

The motorcycle of the first embodiment differs from the first embodiment in that the arrangement direction of each lead battery 6a of the battery unit 6 is arranged in the front-rear direction, and the battery unit 6 is disposed. The frame 24 is formed by the front portion of the rocker arm 218. In the following, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and their description will be omitted.

In other words, in the battery unit 6 of the present embodiment, the right and left widths are suppressed, and the left and right rear frames 26 are disposed so as to pass through the outer side of the battery unit 6. When the left and right rear frames 26 are extended so as to protrude downward from the rear side of the left and right side portions of the front cross tube 23, a bending extension is generated to be displaced upward. Further, the rocker arm 218 is the same as that of the fourth embodiment, but a combination of the known rocker arm 118 and the in-wheel type drive motor 108 may be employed as in the second embodiment.

As described above, even in the automatic two-vehicle 401 of the present embodiment, similarly to the motorcycle 1 of the first embodiment, the lower end of the seat 3 and the front end of the seat 3 are only at the rear side. The high-voltage battery 6A is configured to make the footboard 4 low and wide, which can reduce the influence on the layout of other parts, and concentrate the mass on the center of the vehicle body, thereby ensuring high-voltage driving power.

Further, the extension frame 24 is constituted by the rocker arm 218, and the high-voltage battery 6A is disposed between the left and right arms of the rocker arm 218, and the left and right arms are disposed, and the drive motor 8 and the PDU 47 are disposed in the rocker arm 218. The wiring loss between the high voltage battery 6A, the drive motor 8 and the PDU 47 is reduced.

Furthermore, the present invention is not limited to the above-described embodiments, and is not limited to the automatic two-wheeled vehicle limit, and can be applied to a three- or four-wheeled vehicle, and various modifications can be made without departing from the scope of the invention.

(industrial availability)

According to the scooter type electric vehicle of the present invention, the high-voltage battery can be disposed at a rearward side of the front end of the seat by the high-pressure battery disposed horizontally along the width direction of the vehicle body. Thereby, the foot pedal can be made low and wide. Further, by arranging a high-voltage battery composed of a plurality of lead-acid batteries for driving as a heavy object in the vicinity of the center of the vehicle body, the influence on the layout of other components can be reduced, and the quality can be improved. ) Focus on the center of the car body. Further, since a high voltage battery composed of a plurality of lead storage batteries for driving is used, high-voltage driving power can be secured.

1, 101, 201, 301, 401. . . Automatic two-wheeled vehicle

2. . . Rod handlebar

3. . . Seat

3a. . . Rotary axis

4. . . Pedal

5. . . Body shell

6. . . Battery unit

6a. . . Lead battery (lead battery for driving)

6A. . . High voltage battery

7. . . rear wheel

8,108. . . Drive motor

8a. . . Motor cable

9. . . Battery case

9a. . . Box body

9b. . . Cover

11. . . Body frame

12. . . Head tube

13. . . Pivot part

14. . . Front wheel

15. . . Left and right front fork

16. . . Bridging member

17. . . Steering tube

18, 118, 218. . . Rocker arm

19. . . Gear mechanism

twenty one. . . Buffer unit

twenty two. . . Main frame tube

22a. . . Lower frame

22b. . . Lower frame

22c. . . Baffle

twenty three. . . Front cross tube

23a. . . Side column bracket

twenty four. . . Extend the frame

24a. . . Support plate

25. . . Rear cross

25a. . . Middle column bracket

26. . . Rear frame

26a. . . Upper extension

26b. . . Rear extension

26c. . . First cross

26d. . . Second cross

27. . . Pedal frame (foot frame)

27a. . . Left and right pedal bracket tube

27b. . . Left and right pedal connecting tube

27c. . . Pedal cross

27d. . . Left and right pedal support bracket

28. . . Buffer bracket

29a. . . Support side column

29b. . . Supporting column

31. . . The front cover

32‧‧‧ front inner cover

33‧‧‧ bottom cover

34‧‧‧foot pedal cover

35‧‧‧ Rear center cover (seat cover)

36‧‧‧ left and right side cover

37‧‧‧ Rear pedals (same pedals for passengers)

39‧‧‧Article storage box

39a‧‧‧A pair of front box support brackets

39b‧‧‧A pair of rear box support brackets

41a‧‧‧positive terminal

41b‧‧‧Negative terminal

42‧‧‧Intermediate cable (cable)

43‧‧‧Circuit breaker (intermediate connector)

44‧‧‧External connector

45‧‧‧Connected cable

45a‧‧‧Link connector

46‧‧‧Output cable (cable)

46a‧‧‧second output cable

46b‧‧‧ third output cable

47‧‧‧ PDU (driver)

47A‧‧‧Control unit

48‧‧‧ converter

48a. . . Unit connection cable

49. . . ECU (Electronic Control Unit)

51. . . Ordinary motor parts

52. . . Contactor

52a. . . switch

52b. . . Coil

53. . . Main switch

53a. . . Main switch wire

61. . . Battery retention frame (sub-frame)

61a. . . Front fastening bracket

61b. . . Left and right pair of front frame tubes

61c. . . Upper cross tube

61d. . . Left and right pair of upper frame tubes

61e. . . Upper plate

61f. . . Rear fastening bracket

113. . . Pivot plate

C. . . charger

Fig. 1 is a left side view of the scooter type electric vehicle according to the first embodiment of the present invention.

Fig. 2 is a plan view of the main part of Fig. 1.

Fig. 3 is a left side view of the motorcycle in a state in which the outer casing of the vehicle body is removed.

Figure 4 is a plan view of the main part of Figure 3.

Fig. 5 is a front view of the main part of Fig. 3.

Fig. 6 is a circuit diagram showing a schematic configuration of a drive system of the motorcycle.

Fig. 7 is a view showing a layout of a vehicle body of the drive system, and is a plan view corresponding to Fig. 4;

Fig. 8A is a view showing the scooter type electric vehicle according to the second embodiment of the present invention, and is a left side view corresponding to Fig. 3;

Fig. 8B is a plan view of the periphery of the rocker arm of the motorcycle.

Fig. 9 is a view showing the scooter type electric vehicle according to the third embodiment of the present invention, which is a left side view corresponding to Fig. 3;

Fig. 10 is a view showing the scooter type electric vehicle according to the fourth embodiment of the present invention, which is a left side view corresponding to Fig. 3;

Fig. 11 is a view showing the scooter type electric vehicle according to the fifth embodiment of the present invention, which is a left side view corresponding to Fig. 3;

1. . . Automatic two-wheeled vehicle

2. . . Rod handlebar

3. . . Seat

3a. . . Rotary axis

4. . . Pedal

5. . . Body shell

6. . . Battery unit

6a. . . Lead battery (lead battery for driving)

6A. . . High voltage battery

7. . . rear wheel

8. . . Drive motor

9. . . Battery case

9a. . . Box body

9b. . . Cover

11. . . Body frame

12. . . Head tube

13. . . Pivot part

14. . . Front wheel

15. . . Left and right front fork

16. . . Bridging member

17. . . Steering tube

18. . . Rocker arm

19. . . Gear mechanism

twenty one. . . Buffer unit

twenty two. . . Main frame tube

22a. . . Lower frame

22b. . . Lower frame

22c. . . Baffle

23a. . . Side column bracket

twenty four. . . Extend the frame

24a. . . Support plate

25. . . Rear cross

25a. . . Middle column bracket

26. . . Rear frame

26a. . . Upper extension

26b. . . Rear extension

26c. . . First cross

26d. . . Second cross

27. . . Pedal frame (foot frame)

27a. . . Left and right pedal bracket tube

27b. . . Left and right pedal connecting tube

27c. . . Pedal cross

27d. . . Left and right pedal support bracket

28. . . Buffer bracket

29a. . . Support side column

29b. . . Supporting column

39. . . Item storage box

39a. . . Left and right pair of front box support brackets

39b. . . Left and right pair of rear box support brackets

53. . . Main switch

61. . . Battery retention frame (sub-frame)

Claims (8)

A scooter type electric vehicle includes: a vehicle body frame having a descending frame portion extending from a head pipe toward a rear side of the vehicle in a front-rear direction, and a rear side of the descending frame portion toward a front and rear direction of the vehicle a frame portion extending downward; the seat is disposed on the rear side of the front and rear direction of the vehicle in comparison with the head pipe, and is provided for the rider to ride; the foot pedal is disposed between the head pipe and the seat, and is used Providing a foot for the occupant; driving a motor for driving; and driving a lead storage battery to supply electric power to the driving motor; and the skating type electric vehicle is characterized in that the vehicle body frame has Extending the frame, the extended frame extends more toward the rear of the vehicle than the front end of the seat, and the rear frame is slightly extended vertically from the rear end, arranged in the direction of the vehicle width a plurality of the above-mentioned driving lead storage batteries constitute a high-voltage battery supported by the extension frame, and at the same time, only the lower end of the seat and the front end of the seat are matched To bias the rear of the vehicle front-rear direction of the foot plate disposed above the line of the high pressure than at a lower surface of the battery position, The high-voltage battery is extended to the outer side of the vehicle seat in the vehicle width direction in a plan view, and is disposed continuously from the foot pedal in the high-voltage battery at the outer side in the front-rear direction of the vehicle for the rear portion. The same person placing the foot with the pedal, the body frame having the left and right pedal bracket extending to the outer side of the high-voltage battery in the vehicle width direction while supporting the pedal of the same passenger, The left and right pedal brackets are disposed between the main frame and the rear frame, and are arranged to be inclined upward toward the rear. The vehicle body frame is provided in the high-voltage battery from the front and rear of the vehicle in the front-rear direction from the extended frame a battery holding frame extending upwardly and at the same time above the high voltage battery toward the rear of the vehicle front and rear direction, the battery holding frame covering the front surface and the upper surface of the high voltage battery, and supporting the high voltage battery The article storage box, and the cross frame provided between the left and right pedal brackets is extended upward and extended toward the rear on the battery, High voltage battery line extended from the left and right body frame, said rear frame and said battery holder is surrounded by a frame, the frame line of the battery holder supporting said article storage box. For example, the speed of the Keda type electric vehicle of claim 1 of the patent scope, wherein: The battery case houses the high-voltage battery; and the article storage box is disposed above the battery case and below the seat. A speed-size electric vehicle according to claim 1, wherein the high-voltage battery is disposed in the article storage box in a front-rear direction dimension in the front-rear direction of the vehicle. The invention relates to a speed-size electric vehicle according to claim 1, wherein the extension frame passes under the high-voltage battery and extends to the rear of the vehicle in the front-rear direction, and the vehicle body frame is attached to the vehicle body frame. The high-voltage battery has a pair of left and right rear frames along the front and rear direction of the vehicle, and the rocker arm constituting one of the body frames is pivotally supported by the rear end portion thereof, and At the same time, the drive motor can be accommodated therein, and the front end of the rocker arm is swingably supported by the rear frame in the high-voltage battery at a position rearward of the vehicle front and rear direction. According to the first aspect of the invention, the lead-acid battery for driving is provided in parallel with four in the vehicle width direction, and is connected in series to each other, and each of the driving lead storage batteries is configured as The positive electrode terminal and the negative electrode terminal are arranged in the vehicle front-rear direction, and the positions of the positive electrode terminal and the negative electrode terminal in the vehicle front-rear direction are reversed between adjacent ones in the vehicle width direction. The external connector of the first cable extending from the positive electrode terminal and the negative electrode terminal of the lead-acid battery for driving each of the driving lead batteries is exposed from one side of the battery case in which the lead-acid batteries for driving are accommodated. The intermediate connector of the second cable which is located between the respective lead-acid batteries for driving in the above-described vehicle width direction is externally exposed to the outside, and is similarly exposed to the outside from the one side surface of the battery case. A speed-size electric vehicle according to the first aspect of the invention, wherein the motor vehicle includes a rotatably pivoting rear end of the body frame and a front end of the body frame at the same time The rocker arm of the extended frame is swingably supported below the high voltage battery. The invention relates to a speed-size electric vehicle of claim 1, wherein the vehicle further includes a seat cover covering a lower circumference of the seat, and the extended frame extends below the high-voltage battery and extends to the front and rear directions of the vehicle. Thereafter, the vehicle body frame is attached to the high-voltage battery in the front-rear direction of the vehicle, and has a frame that is inclined upward from the rear end portion of the extended frame toward the rear side in the front-rear direction of the vehicle. The front surface of the seat cover is provided to be inclined upward in a side view in the front-rear direction of the vehicle, and the high-voltage battery is disposed to be inclined in a side view along the front surface of the seat cover and the rear frame. For example, the speed-size electric vehicle of the first application of the patent scope, wherein the extension frame is rotatably pivoted to the rear wheel by the rear end portion thereof At the same time, the front end portion is pivotally supported by the rocker arm of the lower frame portion, and at least a part of the high voltage battery is disposed between the left arm and the right arm of the rocker arm and the left arm and the right arm. Further, the drive motor and the driver thereof are disposed in the rocker arm.