CN100575133C - The battery configuration structure of elec. vehicle - Google Patents

Abstract

A kind of battery configuration structure of elec. vehicle is provided, and it can shed the heat that battery distributes effectively to the outside, and can suppress the previous section maximization of car body.The battery configuration structure of this elec. vehicle possesses, and from the beginning manages the down pipe (4) that extend down on the car body fore-and-aft direction backward (3), and the battery (74) to the power source motor power supply is bearing on the battery carrier (90) that is arranged on this down pipe (4).Described battery carrier (90) is a same material with described down pipe (4), and forms one with this down pipe (4), and it has the extension (91) that extends to the vehicle-width direction.

Description

The battery configuration structure of elec. vehicle

Technical field

The present invention relates to possess the battery configuration structure in the elec. vehicle of the battery that power source motor is powered.

Background technology

In general the motion that has following electric bicycle: in electric bicycle, possess from the beginning pipe following backward down pipe that extends on the car body fore-and-aft direction, resinous battery case is fixed by bolts on this down pipe, battery container (for example with reference to patent documentation 1) in this battery case to the power source motor power supply.

This car has following advantage: owing to be that battery is disposed along down pipe, even a plurality of the bigger battery installation of weight ratio, also can keep the balance of vehicle weight effectively.

Patent documentation 1: specially permit communique No. 3069808

But in the existing design, because battery case is resinous, so, might be difficult to from the heat that battery distributes shed to the outside effectively.

And because described battery case is to be fixed on the down pipe by binding parts such as battery carriers, so, at this down pipe and link between the parts or linking and wait place to be easy to generate the gap between parts and the battery case, so the problem of the previous section maximization that prevents car body is arranged.

Summary of the invention

The object of the present invention is to provide a kind of battery configuration structure of elec. vehicle, it can shed the heat that battery distributes effectively to the outside, and can suppress the previous section maximization of car body.

In order to reach described purpose, the battery configuration structure of elec. vehicle of the present invention possesses from the beginning pipe following backward down pipe that extends on the car body fore-and-aft direction, battery support to power source motor power supply is being arranged on the battery carrier on this down pipe, wherein, described battery carrier and described down pipe are same materials, and form one with this down pipe, and it has the extension that extends to the vehicle-width direction, described extension extends to the outside of front fork, and, make the end of described extension be positioned at the described front fork outside, described battery is by accommodate battery container portion and last battery resettlement section down, described down battery container portion is with described end is integrally formed and tilt from the top towards the back lower place, and the described battery resettlement section of going up is configured to extend from the upper end bending of described battery container portion down and in vertical direction.

At this moment, also can be on the end of described battery carrier extension described battery support.

Among the present invention, because battery carrier and down pipe are same materials, and with this down pipe formation one, so, it is for example so long as made by the good metal of permeability to heat such as aluminum alloy, and then the heat that distributes from battery just can shed effectively by battery carrier and down pipe.

Because battery carrier has the extension that extends to the vehicle-width direction, so this extension has increased heat delivery surface, can more effectively dispel the heat.

Because battery carrier and down pipe form one, so with battery is compared by the situation that links parts and be fixed on the down pipe, it is at down pipe and link between the parts or linking and wait the place not produce useless gap between parts and the battery carrier, can suppress the previous section maximization of car body.

On the extension of described battery carrier, also strengthening rib can be set.See it also can is that described strengthening rib is provided with multiple row from vehicle body side.

These structures have increased dissipating area by strengthening rib, thus can expect to have better radiating effect, and owing on extension, be provided with strengthening rib, so can improve the rigidity and the vehicle frame whole rigidity of down pipe.

Also can extend from the position of described down pipe the extension of described battery carrier to car body the place ahead, described strengthening rib is arranged on the described extension.

This structure by extension is extended from the position of down pipe to car body the place ahead, so just makes the length of extension elongated, by strengthening rib being arranged on the elongated extension of this length, and can increase the area of strengthening rib, so can improve radiating efficiency.

Also can on the cap assembly that covers described battery carrier, air suctiton inlet and exhausr port be set, described air suctiton inlet is arranged in the face of described battery.Also can on the surface of the described battery carrier relative, radiating gill be set with the air suctiton inlet of described cap assembly.

In these structures; because be provided with the cap assembly of clad battery frame, thus can seek to protect battery, and air suctiton inlet is arranged in the face of battery; or on the surface of the battery carrier relative, radiating gill is set, so can improve the cooling performance of battery more with the air suctiton inlet of cap assembly.

Among the present invention, battery carrier and down pipe are same materials, and form one with down pipe, and have the extension that extends to the vehicle-width direction, so the heat that distributes from battery can shed to the outside effectively by battery carrier and down pipe, the previous section that can suppress car body simultaneously maximizes.

Description of drawings

Fig. 1 is the lateral plan of one embodiment of the invention elec. vehicle;

Fig. 2 is the diagram of block of presentation graphs 1 described vehicle summary system architecture function;

Fig. 3 is the section-drawing of the described vehicle power unit of Fig. 1;

Fig. 4 is the partial enlarged drawing of Fig. 3;

Fig. 5 is the block diagram that the expression Vehicular body front is seen from the left back;

Fig. 6 is the lateral plan of Vehicular body front;

Fig. 7 is the B-B section-drawing of Fig. 1;

Fig. 8 is the front elevation in car body the place ahead;

Fig. 9 is the back view in car body the place ahead;

Figure 10 is the A-A section-drawing of Fig. 9;

Figure 11 is a back view of each cover being unloaded down the Vehicular body front of state;

Among Figure 12, a is the cutaway view of variation Vehicular body front, and b is the cutaway view of extension.

The specific embodiment

Following with reference to description of drawings one embodiment of the invention.

Fig. 1 is the lateral plan of present embodiment compound type motor scooter, and this motor scooter is driven by the composite power of combustion engine and electrical motor.

Among Fig. 1,1 expression motor scooter, this motor scooter 1 are to possess bogie car the structure of the steering shaft 2a of (being called " handlebar " to place an order) 2 energy free rotation ground supporting on head pipe 3.The down pipe 4 that extends down backward on the car body fore-and-aft direction is attached on this pipe 3, links the middle vehicle frame 5 of the approximate horizontal extension rearward of diverging also about oriented car body in the lower end of this down pipe 4.Front portion at this centre vehicle frame 5, dispose to driving engine 9 and lamp etc. and supply with the battery 125 of 12 volts of controls with voltage, part is striden and is established cross member of frame 5a about middle vehicle frame 5 rear portions, and vehicle frame 6 is attached on this cross member of frame 5a after the car body pair of right and left of extending is tiltedly gone up in the car body rear.These pipes 3, down pipe 4, middle vehicle frame 5 and back vehicle frame 6 etc. have constituted vehicle body frame.

Be supported on the steering shaft 2a lower end that head is managed the handlebar 2 on 3 at axle, be combined with front fork 7, it links the upper end by end bridge 37, and the lower end axle of this front fork 7 is supporting front-wheel 8.

Power unit 12 is attached on the vehicle frame 6 of described back by link mechanism 13 and can shakes easy on and off.This power unit 12 possesses: driving engine 9 and electrical motor 10 and stepless speed changer 11, trailing wheel 15 is attached on this power unit 12 by speed reduction gearing 14.Be provided with posterior bumper 16 between the rear portion of the rear portion of power unit 12 and back vehicle frame 6, the lower end of this posterior bumper 16 is attached at the rear portion of power unit 12 with pin, and the upper end of posterior bumper 16 is attached at the rear portion of back vehicle frame 6 with pin.

Top at back vehicle frame 6 is provided with occupant's seat 122, forms the space accommodate the helmet etc. below this occupant's seat 122.

As the conversion control apparatus 23 of electrical motor 10 driving circuits and the control unit (ECU) 24 of control driving engine 9 and genemotor 10a (Fig. 2) etc., be arranged on the vehicle frame 6 of back.

The schematic configuration of power unit 12 is described below with reference to Fig. 2.

This power unit 12 comprises: driving engine 9, and it is first propulsion source; Genemotor 10a, it has as the starter motor function that is used for start the engine 9, also has the function as electrical generator; Stepless speed changer 11, the power-supply change-over of its driving engine 9 become corresponding to the converter speed ratio of machine run speed and to the 15 side transmission of drive wheel trailing wheel; Centrifugal clutch 40, it is the power-transfer clutch of velocity response type, is installed between driving engine 9 and the stepless speed changer 11 and cuts off the transmission of power; Free-wheel clutch 44, its power from stepless speed changer 11 to trailing wheel 15 side transmission, but not power from trailing wheel 15 to stepless speed changer 11 side transmission; Speed reduction gearing 14, it is positioned between the axletree 68 of the trailing wheel 15 side efferents (driven shaft 60) of this free-wheel clutch 44 and trailing wheel 15, and the output of transmitting to trailing wheel 15 is slowed down; Electrical motor 10, the input side that it is attached at this speed reduction gearing 14 has the function that also has when being motor function as second propulsion source as electrical generator; Conversion control apparatus 23, it controls this electrical motor 10 and genemotor 10a; Control unit 24, it controls this conversion control apparatus 23 and driving engine 9.

This power unit 12 has two drive systems basically, drive system is that the power of driving engine 9 is transmitted by centrifugal clutch 40, stepless speed changer 11, free-wheel clutch 44, driven shaft 60 and speed reduction gearing 14 and to trailing wheel 15, and another drive system is by driven shaft 60, speed reduction gearing 14 and to trailing wheel 15 transmission the power of electrical motor 10.

Battery 74 is connected on genemotor 10a and the electrical motor 10, at genemotor 10a and electrical motor 10 and when playing a role as starter motor and electrical motor, it is accepted from the electric power of battery 74 supplies, when genemotor 10a and electrical motor 10 worked as electrical generator, its their regenerated electric power was to battery 74 chargings.

Driving engine 9 is to suck from the mixture gas of the air of aspirate tube 116 and fuel mix and make its burning structures, and the air door valve 117 of control air amount is set in the aspirate tube 116 freely to rotate.This air door valve 117 rotates according to the operational ton of driver's operation throttle lever.Among Fig. 2,85 are arranged on the door opening degree sensor on the throttle lever.

Between air door valve 117 and driving engine 9, dispose nozzle for jetting fuel 118, and dispose the B/P EGR Back Pressure Transducer EGR 119 that detects negative pressure in the aspirate tube 116.

Fig. 3 is the section-drawing of power unit 12.

As mentioned above, this power unit 12 possesses the first propulsion source driving engine 9, and this driving engine 9 is the structures of accommodating piston 25 in the cylinder 27 of cylinder block 26 with being free to slide.Linking on this piston 25 has connecting rod 124, and linking on this connecting rod 124 has bent axle 22.

Cylinder block 26 makes the axis approximate horizontal ground configuration of cylinder 27, and its head is fixed with cylinder head 28 with an end obturation of cylinder 27.Between this cylinder head 28 and piston 25, form the combustion chamber 20a that makes mixture combustion.

On cylinder head 28, dispose the valve (not shown) and the light-up plug 29 of or the exhaust air-breathing of control mixture gas to combustion chamber 20a.

The switching of described valve is controlled by the rotation that axle is bearing in the camshaft 30 on the cylinder head 28.One of this camshaft 30 possesses driven sprocket 31 on distolateral, and at this driven sprocket 31 and be arranged between the drive sprocket 32 on bent axle 22 1 ends, dress hangs with the chain 33 of ring-type.Camshaft 30 by this cam chain 33 and with the rotation interlock of bent axle 22.Be provided with the water pump 34 of cooled engine 9 at an end of camshaft 30.

This water pump 34 is mounted to its S. A. 35 and rotates with camshaft 30 with being integral, therefore, if these camshaft 30 rotations then make water pump 34 carry out work by its rotational force.

22 on described bent axle is bearing in the crankcase 48, and linking on the vehicle-width direction right side of this crankcase 48 has stator case 49, and its inside contains genemotor 10a.This genemotor 10a is the motor of so-called outer rotor form, and its stator is made of the coil 51 that lead is wrapped on the T font steel 50 that is fixed on the stator case 49.Outer rotor 52 then is fixed on the bent axle 22, and it is the general cylindrical shape of covering stator periphery, is set with magnet 53 on the inner peripheral surface of this outer rotor 52.

The centrifugal fan 54 that is used to cool off genemotor 10a is installed on this outer rotor 52, if this centrifugal fan 54 rotates synchronously with bent axle 22, then the cooling air that can form from the cover 55 side 55a of stator case 49 is taken into the air suctiton inlet of mouthful usefulness, and is taken into extraneous air.

Give prominence to the vehicle-width direction from crankcase 48 left part of bent axle 22, and the drive side drive pulley 58 of stepless speed changer 11 is installed by centrifugal clutch 40 on the left part of this outstanding bent axle 22.

Stepless speed changer 11 also possesses except drive side drive pulley 58 and has: slave end drive pulley 62, its by free-wheel clutch 44 be installed in have with bent axle 22 parallel to the axis the configuration driven shaft 60 on; Ring-type V-type band 63, its rotary power transmits to slave end drive pulley 62 from drive side drive pulley 58.

As shown in Figure 4, drive side drive pulley 58 possesses: drive side tight pulley halfbody 58a, and it is installed on the bent axle 22 by sleeve 58d with rotating freely and is fixed on this sleeve 58d; The movable half-pulley 58c of drive side, it is installed on the sleeve 58d, can slide on axially and can not be in the upwards rotation of its week at it.On the movable half-pulley 58c of drive side the weight roller is installed, it makes its half-pulley 58c to the displacement of drive side tight pulley halfbody 58a direction according to centnifugal force.

Slave end drive pulley 62 possesses: slave end tight pulley halfbody 62a, and it is installed on the driven shaft 60, and the slip upwards rotating freely in week on it is axial is limited; The movable half-pulley 62b of slave end, its shaft sleeve part 62c that is installed in this slave end tight pulley halfbody 62a goes up and can slide on it is axial, rear side (vehicle-width direction left side) at the movable half-pulley 62b of slave end is provided with the movable half-pulley 62b of this slave end often to the pressured spring 64 of slave end tight pulley halfbody 62a side.

Described V-shape belt 63, around being hung between these drive side tight pulleies halfbody 58a and the movable half-pulley 58c of drive side, and the section that forms respectively between slave end tight pulley halfbody 62a and the movable half-pulley 62b of slave end roughly is in the belt grooves of V word shape.

When this stepless speed changer 11 rises at the rotating speed of bent axle 22, in drive side drive pulley 58 by centrifugal action on weight roller 58b and the movable half-pulley 58c of drive side is slided to drive side tight pulley halfbody 58a side.

At this moment, because this slip and the movable half-pulley 58c of drive side is approaching to drive side tight pulley halfbody 58a, the well width of drive side drive pulley 58 reduces, so contact position side shifting to the radial direction of drive side drive pulley 58 outside of drive side drive pulley 58 and V-shape belt 63, V-shape belt 63 around hanging the footpath increase.Thereupon, in slave end drive pulley 62, the width by the groove that formed by slave end tight pulley halfbody 62a and the movable half-pulley 62b of slave end increases.Promptly according to the rotating speed of bent axle 22 and V-shape belt 63 be continually varying around hanging footpath (transmitting the spacing footpath), converter speed ratio is to change automatically and infinitely.

Centrifugal clutch 40 is arranged on the end in car body left side of drive side tight pulley halfbody 58a of the perforation stepless speed changer 11 in the bent axle 22.This centrifugal clutch 40 comprises: the body skin 40a of cup-shaped, and it is fixed on the described sleeve 58d; Inner panel 40b, it is fixed on the left part of the bent axle 22 that connects this body skin 40a; Crawler shoe 40d, it is installed on the face in the body skin 40a of facing of this inner panel 40b towards the radial direction outside by weight 40c; Spring 40e, 40d is pressured to the radial direction inboard for its this crawler shoe.

In this structure, inner panel 40b and weight 40c and crawler shoe 40d have constituted the inboard swivel of centrifugal clutch 40, and body skin 40a has constituted outside swivel.On the end face of the inner panel 40b outside of centrifugal clutch 40, centrifugal fan 54 is installed, makes the extraneous air that imports from the air suctiton inlet 59a of transmission housing 59, circulation in electronic housing 59 by the effect that blows out of centrifugal fan 54.

This centrifugal clutch 40, the centnifugal force by weight 40c is connected with the cut-out that the pressured equilibrium of forces of spring 40e carries out power, and when the rotating speed of bent axle 22 did not reach setting value (for example being 3000rpm), the depended on pressure by spring 40e interdicted transmission of power.When the rotating speed of bent axle 22 surpassed above-mentioned setting value from this state, the centnifugal force of weight 40c surpassed the depended on pressure of spring 40e, by weight 40e side shifting outside radial direction, and crawler shoe 40d is pushed on the inner peripheral surface of body skin 40a.

At this moment, just produced cliding friction between crawler shoe 40d and body skin 40a, power is just slowly transmitted betwixt.Consequently the rotational force of bent axle 22 is passed on the sleeve 58d by centrifugal clutch 40, and the drive side drive pulley 58 that is fixed on this sleeve 58d is driven.

The structure of free-wheel clutch 44 possesses: outer power-transfer clutch 44a, and it is a cup-shaped; Internal clutch 44b, it is inserted on this outer power-transfer clutch 44a in coaxially; Roller 44c, it can be power from the only outside power-transfer clutch 44a transmission of uniaxially of internal clutch 44b.The internal rotor body of outer power-transfer clutch 44a double as electrical motor 10, and with this internal rotor body by same component set-up.The left part of the shaft sleeve part 62c of the interior perimembranous of internal clutch 44b and slave end tight pulley halfbody 62a is mutually by the spline combination.

This free-wheel clutch 44, the power of the driving engine 9 that the slave end drive pulley 62 to stepless speed changer 11 is transmitted, transmit to trailing wheel 15 by driven shaft 60 and speed reduction gearing 14, but, transmit to stepless speed changer 11 not from the power of these trailing wheel 15 sides by speed reduction gearing 14 and driven shaft 60 inputs.

Therefore, when promoting the vehicle walking and when the regeneration action is arranged, the power of trailing wheel 15 sides only makes outer power-transfer clutch 44a for internal clutch 44b idle running, and to stepless speed changer 11 and driving engine 9 transmission.

As shown in Figure 3, the structure of speed reduction gearing 14 is, it possesses parallel by the tween drive shaft 73 of axle supporting with the axletree 68 of driven shaft 60 and trailing wheel 15, also possess respectively first reducing gear that the central portion at the right part of driven shaft 60 and tween drive shaft 73 forms simultaneously to 71,71, and second reducing gear that forms in the left part of tween drive shaft 73 and axletree 68 respectively is to 72,72.

This speed reduction gearing 14 slows down the reduction ratio of the rotation of driven shaft 60 with regulation, and transmits to the axletree 68 with the trailing wheel 15 of its parallel shafts supporting.

As shown in Figure 4, described electrical motor 10 is the inner rotor type motor of driven shaft 60 as motor output shaft, and described internal clutch 44b constitutes the internal rotor body of internal rotor 80.The stator 83 of this electrical motor 10 is fixed on by stator case 83a on the inboard of transmission housing 59, and this stator 83 is provided with the T font steel 83b that has twined coil 83c.

Outer power-transfer clutch 44a has formed cup-shaped, and the outstanding shaft sleeve part 80b that is provided with is that spline combines with driven shaft 60 at central portion.

On the open side outer peripheral face of power-transfer clutch 44a magnet 80c is installed outside, its T font steel 83b with stator 83 is relative, on the bottom side outer peripheral face of power-transfer clutch 44a a plurality of detected bodies 82 are installed outside, it detects by the rotor sensor 81 that is installed on the transmission housing 59 inwall 59A.

This electrical motor 10 during as power-assisted, is to play a role as electrical motor when advancing and the output of driving engine 9, and in addition, its rotation transformation of going back handlebar driven shaft 60 becomes electric energy, carries out the function as electrical generator of refresh charging to battery shown in Figure 2 74.

The following describes battery 74 and be supported in structure on the vehicle.

Fig. 5 is a block diagram of seeing motor scooter 1 Vehicular body front main portion from the left back, and Fig. 6 is its lateral plan.Described battery 74 for example is cylindric Ni-MH battery, and as shown in Figure 5, these a plurality of batteries 74 accumulate a row shape, clamp down pipe 4 ground be configured in the vehicle-width direction about.

This down pipe 4 is aluminum alloy systems, and as shown in Figure 7, its section presents コ word shape roughly, possess 4a of face wall portion and the 4b of pair of sidewalls portion, be formed with battery carrier 90 on the lower edge portion 4c of the 4b of pair of sidewalls portion, itself and down pipe 4 are same materials, extend to the vehicle-width left and right directions with being integral.

This battery carrier 90 possesses the extension 91 that the lower edge portion 4c with side wall portion 4b fuses, as shown in Figure 5, this extension 91 is being connected part 191 on the roughly whole zone of lower edge portion 4c as benchmark, roughly crooked symmetrically to vehicle-width left and right directions and vehicle front direction, following expansion ground extends, its end form accommodate battery 74 from above the battery container portion 92 (with reference to Fig. 7) that has a down dip backward, become one with it.

This battery container portion 92 is same materials with down pipe 4, and as Fig. 1, Fig. 5 and shown in Figure 6, it possesses last battery resettlement section 92a and the following battery container 92b of portion, in the 92a of these battery container portions, the 92b, the following battery container 92b of portion forms one with the end of described extension 91, and go up battery resettlement section 92a is from the upper end bending of the 92b of battery container portion down, extends configuration to vertical direction.

As shown in Figure 8, the following battery container 92b of portion to vehicle-width direction expansion, and is in the farther positions of distance head pipe 3 than last battery resettlement section 92a, and the spacing of the following battery container 92b of portion about car body is configured to wideer than the width of front fork 7.According to this configuration, even the close more car body the place ahead of battery container portion 92, the curve of battery container portion 92 also can not produce with end bridge 37 (with reference to Fig. 1) interferes.

Therefore, can be battery container portion 92 along pin shield 129 and by the configuration of car body the place ahead.

As shown in Figure 8, on the extension 91 of battery carrier 90, clamp down pipe 4 and in the both sides of this down pipe 4, left and right symmetrically is provided with two recesses 138 (with reference to Fig. 6).This recess 138 and the top of front fork 7 are that the position of end bridge 37 is corresponding.

In this configuration, under the situation of battery container portion 92, because end bridge 37 is to be incorporated in two recesses 138, so should can not contact by end bridge 37 with extension 91 near the configuration of car body the place ahead.

Also can recognize from Fig. 9, this structure from the beginning manage 3 around can dispose a plurality of batteries 74 effectively in the zone of this whole broadness around the down pipe 4, can be to the enough electric power of the drive motor of electric bicycle supply.

Because setting battery 74 is the curved shapes along head pipe 3 and down pipe 4 when disposing, near about the 129 end configurations of pin shield, avoided the interference with front fork 7, so, can dispose battery 74 fully near car body the place ahead.Consequently can make the space that produces enough and to spare around the pin of passenger.

As shown in Figure 7, contain a plurality of batteries 74 in the described battery container portion 92 and keep the banded frame 93 at battery 74 two ends, be coated with battery cover 94 for their are covered.

Promptly as shown in figure 10, be provided with the part 92c of the continuous semicircle shape waveform that meets battery 74 profiles in the bottom of battery container portion 92, battery 74 just is housed in this part 92c, then, be formed with the battery cover 94 with the same continuous semicircle shape waveform portion 94c in the bottom of battery container portion 92, cover thereon.Between continuous semicircle shape waveform portion 92c, 94c and battery 74, be provided with certain clearance in order to prevent to interfere.

In this battery cover 94 and battery container portion 92, be respectively arranged with mounting boss 181,182, for clad battery 74 and banded frame 93, after being covered, battery cover 94 then adjusts mounting boss 181,182, carrying out screw retention by tightening screw 183 between these lug bosses.

In this case, battery cover 94 can be one by one, also can be to comprise hinge and integrated.

In the following description, the battery pack that is made of a plurality of batteries 74 that are housed among the 92a of battery resettlement section is called upper cell group 127, the battery pack that is housed in down in the 92b of battery container portion is called bottom battery pack 128.

As shown in Figure 5, its width dimensions of the 4a of face wall portion W of down pipe 4 forms from being bonded on the upper end 4d on the head pipe 3, towards below and the bottom 4e that extends down backward become big at leisure.Therefore, the extension 91 of battery carrier 90, it is from the upper end 4d of down pipe 4 extended part nearby, with from bottom 4e nearby extended part compare, its extended length is to stretch out longways.

At the length direction of the 4a of this face wall portion middle part configuration center cover 141, as shown in Figure 7, this central cover 141 is installed in from the 4a of face wall portion of down pipe 4 and extends and be on the fixed plate 133 of one.

In the inboard of this central cover 141, dispose lead unit 134, this lead unit 134 is installed on the 4a of face wall portion of down pipe 4 by a plurality of fix screws 140.

As shown in figure 11, the relay unit 151 that contains safety fuse cutout 149 and be connected in series in this lead unit 134 with it.The side of the positive electrode lead of drawing 152 from this relay unit 151 be configured in respectively after car body right and left upper battery pack 127 and bottom battery pack 128 be connected in series, the negative side lead 153 that bottom, left side battery pack 128 from figure is drawn connects with coupling 154 by connection.

As shown in Figure 7, the place ahead in upper and lower battery pack 127,128, dispose the pin shield 129 (cap assembly) that constitutes front shroud 150 (with reference to Fig. 1) part that car body the place ahead is covered, be formed with a plurality of air suctiton inlets 143 at the both ends of these pin shield 129 vehicle-width directions, its roughly whole zone with the following battery container 92b of portion length direction is relative.Near this air suctiton inlet 143, be formed with a plurality of radiating gill 143a that the control wind direction is used, these a plurality of radiating gill 143a be from vehicle center portion side towards the outside of vehicle-width direction, it forms to such an extent that can the air from vehicle front be taken in pin shield 129.

Position relative with this air suctiton inlet 143 is positioned at the outside of the 92b of battery container portion down, on the outside (surface) of this time battery container 92b of portion, is formed with a plurality of radiating gill 92d that can shed the heat of battery 74.

At the rear of upper and lower battery pack 127,128, dispose the inner cover (back cover) 142 that they are covered from the car body rear, on the vehicle-width direction both ends of this inner cover 142 (cap assembly), be formed with the exhausr port 144 of air.

This structure is when motor scooter 1 traveling, then air is led by a plurality of radiating gill 143a, shown in arrow W, in pin shield 129, flow into by air suctiton inlet 143, outside and a plurality of radiating gill 92c of the 92b of battery container portion pass through this air while cooling off down, shown in arrow Z, down pipe 4 and extension 91 ambient airs be involved in one side by exhausr port 144 carry out exhaust on one side.

In the present embodiment,, are same materials and form one with down pipe 4, so the heat energy that sends from battery 74 dispels the heat to the outside effectively by this battery carrier 90 and down pipe 4 with this down pipe 4 because battery carrier 90 is that the good aluminum alloy of permeability to heat is made.

Battery carrier 90 has to the big extension 91 of vehicle-width direction extension, and this extension 91 is to make area increase ground agley to extend, so the dissipating area of this extension 91 increases, can dispel the heat more effectively.Because battery carrier 90 is to form one with down pipe 4, so like this battery carrier 90 is compared by the situation that the binding parts are fixed on the down pipe 4 with existing, it is not at down pipe 4 and link between the parts or the useless gap of generation such as link between parts and the battery carrier 90, the effect of the car body previous section that can be inhibited maximization etc.

Before and after it, pin shield 129 and inner cover 142 have been disposed for clad battery frame 90, so can seek to protect battery 74.And owing on pin shield 129, be formed with air suctiton inlet 143, on inner cover 142, be formed with exhausr port 144, on the surface of the battery carrier 90 relative, be provided with radiating gill 92d, so can improve the cooling performance of battery more with air suctiton inlet 143.

That Figure 12 a, Figure 12 b represent is other embodiment.

Among this embodiment, the extension 91 of battery carrier 90 is also extended to car body the place ahead than the position of down pipe 4d, on this extends to the extension 91 in car body the place ahead, be wholely set strengthening rib 95 with this extension 91 same materials.

This strengthening rib 95 extends between down pipe 4 and battery container portion 92, and it is constituted by the preceding strengthening rib 95a that gives prominence to extension 91 the place aheads with to the outstanding back strengthening rib 95b in extension 91 rears.The height H of this strengthening rib 95 is that the height H of down pipe 4 sides is the highest from the height H that comprises extension 91, and forming to battery container portion 92 is step-downs at leisure.This strengthening rib 95 extends to form in horizontal surface, it is desirable to shown in Figure 12 b like that, and sky is opened appropriate intervals L ground and is formed with a plurality of in parallel to each other.This strengthening rib 95 is to be provided with to reach multiple row from vehicle body side.

This structure has been owing to increased dissipating area by strengthening rib 95, thus can expect to have better radiating effect, and owing on extension 91, being provided with strengthening rib 95, so can improve the rigidity and the vehicle frame whole rigidity of down pipe 4.

This structure is also extended to car body the place ahead by extension 91 being extended to than the position of down pipe 4, and this part of extending, make the length of extension 91 elongated, by on the elongated extension 91 of this length, strengthening rib 95 being set, can increase the area of strengthening rib 95, and this area that increases can improve radiating efficiency.

Abovely the present invention has been described according to an embodiment, but the present invention to be not limited thereto be clear and definite.Be that the present invention is applicable to that two take turns motor scooter among for example described embodiment, but the present invention is not limited thereto, from the beginning pipe is to the tiltedly following vehicle that extends frame part (being the equal of down pipe) in car body rear so long as have, and it also can be applicable to three-wheel vehicle and four-wheeled.And being not limited to is hybrid power vehicle, and it can be suitable on only by the elec. vehicle of wheel driving motor similarly.

Claims (6)

1, a kind of battery configuration structure of elec. vehicle, it possesses the down pipe that pipe from the beginning extends down backward on the car body fore-and-aft direction, the battery support of powering to power source motor is being arranged on the battery carrier on this down pipe, it is characterized in that,

Described battery carrier and described down pipe are same materials, and form one with this down pipe, and it has the extension that extends to the vehicle-width direction,

Described extension extends to the outside of front fork, and, make the end of described extension be positioned at the described front fork outside,

Described battery is by accommodate battery container portion and last battery resettlement section down, described down battery container portion is with described end is integrally formed and tilt from the top towards the back lower place, and the described battery resettlement section of going up is configured to extend from the upper end bending of described battery container portion down and in vertical direction.

2, the battery configuration structure of elec. vehicle as claimed in claim 1 is characterized in that, it is provided with strengthening rib on the extension of described battery carrier.

3, the battery configuration structure of elec. vehicle as claimed in claim 2 is characterized in that, sees it is that described strengthening rib is provided with multiple row from vehicle body side.

As the battery configuration structure of claim 2 or 3 described elec. vehicles, it is characterized in that 4, the extension of its described battery carrier extends to car body the place ahead from the position of described down pipe, and described strengthening rib is arranged on this extension.

As the battery configuration structure of each described elec. vehicle of claim 1 to 3, it is characterized in that 5, it is provided with air suctiton inlet and exhausr port on the cap assembly that covers described battery carrier, described air suctiton inlet is arranged in the face of described battery.

6, the battery configuration structure of elec. vehicle as claimed in claim 5 is characterized in that, it is provided with radiating gill on the surface of the described battery carrier relative with the air suctiton inlet of described cap assembly.

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