CN1104598A - Electric vehicle - Google Patents

Abstract

The invention relates to an electric vehicle, which comprises a vehicle body, a battery which is supported by the vehicle body, a motor which is provided with a driving shaft and is supplied the electric power by the battery, a driving wheel of the electric vehicle, and an electric transmission device which is used to transfer the power from the driving shaft of the motor to the driving wheel of the electric vehicle. The power transmission device operates at a rotating speed a little lower than the electric maximum-efficiency to generate a speed.

Description

Electric vehicle

The present invention relates to a kind of elec. vehicle.

In general, the characteristics of electrical motor are to render a service lowlyer when slow speed of revolution moves when it, and this moment, its moment was big and electric current is also big.Therefore, loading can make its power consumption become big and the heat release increase when the motor slow speed of revolution.For with motor as for the motor bike of actuating device, this means that time of run shortens and and and drive ability descend.

So the objective of the invention is by a direct motor drive, when slow speed of revolution moves, then can reduce the load of motor during its starting for a kind of like this elec. vehicle is provided.

According to the objective of the invention is by a direct motor drive, when slow speed of revolution moves, then can to reduce the load of motor during its starting for a kind of like this elec. vehicle is provided.

According to elec. vehicle of the present invention, it comprises a car body, a battery that supports by above-mentioned car body, an electrical motor, it is by an axle drive shaft, and described electrical motor is by described battery supply of electrical energy, an electric bicycle drive wheel, but also comprise an electronic transmitting device, and being used for from the described electric bicycle drive wheel transmission of the described driving axial of described electrical motor power, described power transmission is to produce speed slow speed of revolution work slightly than described electrically operated maximal efficiency.

Below in conjunction with accompanying drawing the present invention is done a detailed description, the reader will have clearer understanding to the features and advantages of the present invention.

Fig. 1 is the lateral plan according to the battery-operated motor cycle of the first embodiment of the present invention;

Fig. 2 is the section drawing of the power unit of battery-driven car shown in Figure 1;

Fig. 3 is the end elevation that the A-A line obtains in Fig. 2;

Fig. 4 is the section-drawing that the B-B line obtains in Fig. 2;

Fig. 5 is the section-drawing of the power unit main portion of the expression second embodiment of the present invention;

Fig. 6 is the end elevation that the C-C line obtains in Fig. 5;

Fig. 7 is the section drawing of the power unit main portion of the expression third embodiment of the present invention;

Fig. 8 is the end elevation that the D-D line obtains in Fig. 7;

Fig. 9 is the front elevation that is used in the cooling fan in the power unit shown in Figure 7;

Figure 10 represents to be used in the axial cutaway view of the bearing arrangement of supporting driving shaft in the power unit;

Figure 11 represents to be used to support the axial cutaway view of ball bearing structure main portion of the axle drive shaft of power unit shown in Figure 7;

Figure 12 represents to be equipped with the overall lateral plan according to the battery-operated motor cycle of the power unit cooling mechanism of another embodiment of the present invention;

Figure 13 is the cutaway view of battery-operated motor cycle power unit shown in Figure 12;

Figure 14 is the planar view of power unit cooling mechanism main portion shown in Figure 13;

Figure 15 is the right elevation of Figure 14;

Figure 16 is the right elevation of another main portion of this cooling mechanism;

Figure 17 is the decomposition diagram of Figure 14 and 15 shown devices;

Figure 18 represents the back side cutaway view according to the main portion of the battery-operated motor cycle power unit cooling mechanism of fifth embodiment of the invention;

Figure 19 is the cutaway view of a partly cut-away, with the size Expressing of amplifying the part of power unit shown in Figure 13;

Figure 20 is the left view of Figure 19;

Figure 21 is the right elevation of Figure 19;

Figure 22 is the decomposition diagram that amplify the part of the main portion of Figure 21;

Figure 23 is the circuit diagram of power unit shown in Figure 13;

Figure 24 is the cutaway view according to the power unit main portion of fifth embodiment of the invention;

Figure 25 is the amplification view of the core of battery-operated motor cycle shown in Figure 12, the mounting structure of expression battery;

Figure 26 is the section drawing that obtains along Figure 25 E-E line;

Figure 27 is an enlarged side view of the battery fastening structure shown in Figure 25 and 26; And

Figure 28 is the transparent view of same battery fastening structure.

In the embodiment shown in Fig. 1 to 4, motor bike of numeral 1 expression, it is a battery-driven car that is equipped with according to power unit P of the present invention.

The car body frame F of motor bike 1 comprises one along 1, one of the preceding frame F of the almost vertical direction configuration intermediate frame F2 that extends back of frame F 1 bottom in the past, and one from the back frame F 3 of middle frame F 2 rearward end to the back upper place diagonally extending.The car body shell B that the integral body of this framework is made with synthetic resin covers.

Car body shell B is made of the bonnet B3 at front portion, both sides and the rear portion of the support baffle plate B1 that covers preceding frame F 1, the pedal B2 that covers intermediate frame F2 top, continuous covering back frame F 3 and the bottom B4 of covering intermediate frame F2 bottom.

A stature pipe 2 is permanently connected on preceding frame F 1.Front fork 3 rotatably is connected on the head pipe 2.Be equipped with one on the top of front fork 3 and drive handle 4.And a front-wheel 6 rotatably is equipped with by a damper unit 5 in the bottom at front fork 3.

Next, but the power unit P of a vertical oscillation is installed by pivot 7 at intermediate frame F2 rear portion.Trailing wheel 8 rotatably is contained on the swinging end part of this power unit P.Between the upper surface of power unit P rear end and back frame F 3, a rear shock absorbers unit 9 is housed.

At bonnet B3 top seat 12 is housed.Be provided with the storeroom (not shown) that is used to preserve a helmet at the space segment that is limited by seat 12 and bonnet B3.

The battery case 13 of depositing battery is housed on intermediate frame F2, and battery is used as the driving power of electrical motor 11.Controller 14 and a charger 15 that is battery charge in control motor of installing 11 runnings of the front of head pipe 2.

Describe power unit P in detail below with reference to Fig. 2.

This power unit P has a change speed gear box 16, pivot 7 passes change speed gear box 16 on even keels and installs, electrical motor 11 is contained in the change speed gear box front, and a reducing gear 17 is contained in the change speed gear box back, is used for and a bel-drivenn stepless speed change type gearing 18 couplings that are contained in the change speed gear box.

The engine room 19 that electrical motor 11 is housed is made of the cylindrical outer wall 19a that extends towards change speed gear box the place ahead, an end cap 19b and a partition 19c who is used for separating with change speed gear box who covers the outer end opening part of above-mentioned outer wall 19a.

The axle drive shaft 20 of electrical motor 11 rotatably is supported on ball bearing of main shaft 21 and 22, these bearings are contained in the inside of end cap 19b and partition 19c, and change speed gear box 16 is stretched into from the top of change speed gear box 16 in the end of axle drive shaft, and a rotor 23 is fixedly mounted on parts between pair of bearings 21 and 22.And then, between rotor 23 and the partition 19c with the cooresponding position of partition 19c on a cooling fan 24 is housed.

There are some cooling elements 25 radially to be contained on the axle drive shaft in the outside of end cap 19b.Be furnished with a plurality of field effect transisters around these cooling elements 25, they are used as the switch that changes motor current.

Further, shown in Fig. 2 and 3, cover above-mentioned cooling element 25 with air induction conduit 27.As shown in Figure 3, the admission port 27a of air induction conduit 27 leads to power unit p downwards.

Simultaneously, as shown in Figure 2, cooling fan 24 is assisted cooling fan by the 24a that radially fans that is contained in cylindrical side Monday with the axial fan 24b(that is contained in inner circumferential side) constitute.Radially fanning 24a is used as from being installed near the stator 28 sucking-off air on engine room 19 inner peripheral surfaces, to the radial direction discharged air of axle drive shaft 20.Simultaneously, additional fan 24b is used as near the sucking-off air rotor 23, discharged air on the axial direction of axle drive shaft 20.

Semi-circular part on the outer wall 19a of the engine room 19 that is positioned at power unit p rear is made a plurality of first exhausr port 29(exhausr ports), first exhausr port, is used for radially fanning the Transmission Room M that air that 24a discharges imports the change speed gear box 16 that the bel-drivenn stepless speed change type gearing is housed with certain being spaced at the hand of rotation of axle drive shaft 20.

Next, as shown in Figure 2, on the partition 19c of engine room 19, corresponding axial fan 24b is provided with a plurality of second series gas port 30(auxiliary exhaust mouths at certain intervals on axle drive shaft 20 hand of rotation) also as shown in Figure 4, they import Transmission Room M to the air that axial fan 24b discharges.

Then, as the part of change speed gear box 16, be covered with on the driver lid 31 of belt-driving stepless speed change type gearing 18 and have a deflation hole 32, hole 32 is the inner chamber of Transmission Room M and space outerpace connection.

On the face of joint of driver lid 31 a packing ring S is housed, this packing ring is fixing by driver lid 31.Packing ring S is used on the Width of power unit p Transmission Room M is divided into two parts.

Forming an opening O near packing ring S center, and the strengthening rib T of a sub-circular is set on the inside face of driver lid 31 projectedly, it is round the inside edge of the opening O of packing ring S.

As shown in Figure 4, strengthening rib T connection opening O and deflation hole 32 form exhaust channel U.

Next, there is an additional fan 33 to be installed in rotor 23 in the present embodiment, airguide constituted the axial fan 24b of cooling fan 24 from rotor 23 inside, as shown in Figure 2 by on the end of cooling fan 24 1 sides.

The mode of operation of the said structure of present embodiment is below described.

Along with the starting of electrical motor 11, the rotation of axle drive shaft 20 is sent to reducing gear 17 through bel-drivenn toric transmission 18, and further is sent to trailing wheel 8 as drive wheel by reducing gear 17, thereby starts motor bike 1.

When above-mentioned motor starting, comprise that the circuit part of field effect transister 26 and electrical motor 11 all produce heat.

Yet in the present invention, the heat of these parts is discharged into outside the power unit p by the cooling fan 24 that is connected on the electrical motor 11, controls the temperature rise of these thermals source thus.

Along with the rotation of axle drive shaft 20, cooling fan 24 and additional fan 33 rotate simultaneously, and stay the axial direction that radial fan 24a that Hot air quilts in the stator 28 of motor 11 constitute cooling fan 24 sucks axle drive shaft 20.In addition, the hot air of representing as arrow a among Fig. 2 of conduction in the radial direction at axle drive shaft 20 enters driver chamber M from first exhausr port 29, and first exhausr port 29 is located on the outer wall 19a of engine room 19.

Stay rotor 23 in-to-in hot airs by the additional fan sucking-off that is contained in these rotor 23 ends, then be configured the axial fan 24b sucking-off of cooling fan 24.Hot air quilt axial fan 24b imports the axial direction of the axle drive shaft of representing as arrow b among Fig. 2 20, forces air to enter driver chamber M from the second series pore 30 that is located on the partition 19c.

The hot air that enters driver chamber M is thus discharged outside the power unit p from pore 32 by the path U that is positioned at packing ring S opening O place, and deflation hole 32 is limited by driver lid 31.

On the other hand, along with the negative pressure that forms in the electrical motor 11 that is emitted on of hot gas, thereby the extraneous air of low temperature is introduced electrical motor 11 by the induction opening 27 that connects engine room 19.

In this manner, discharge hot air continuously, and simultaneously outside Cryogenic air is imported electrical motor 11 continuously, thereby control the temperature rise of pyrotoxin well from electrical motor 11 inside.

The hot air of discharging from electrical motor 11 is transmitted to deflation hole 32 through exhaust channel U thus, thereby can discharge smoothly.

In addition, the exhaust channel U that constitutes with existing driver lid 31 and packing ring S can only change a little driver lid 31 under the situation that does not increase any new element and realize.

Fig. 5 and 6 embodiment relate to a small amount of change to the structure and the exhaust of hot air structure of the cooling fan shown in Fig. 1 to 4 24.

Power unit p in the present embodiment is a kind of like this structure, being used for around the rotor 23 of electrical motor 11 aspirated air and ordering about the cooling fan 34 that air discharges along the radial direction of axle drive shaft 20 being contained in axle drive shaft 20; (see figure 6) is established a plurality of exhausr ports 35 in the parts in the outer wall 19a of engine room 19, and these parts are positioned at change speed gear box front upper place part; In change speed gear box 16, be provided with one and lead to change speed gear box 16 1 sides, and be communicated with the deflation hole 36 of each exhausr port 35.

Owing to adopted said structure, thereby might be transmitted to hot air outside the power unit p from heat generating components, and, improved exhaust efficiency and cooling effectiveness not by driver chamber M with the shortest path.

In the embodiment shown in Fig. 7 to 11, the cooling fan 37 that uses among the power unit p has an induction part 37a who is located at axle drive shaft 20 central sides, and a discharge portion 37b who is in the radial direction of rotation, as shown in Figure 7.

Cooling fan 37 comprises that a fan body 39(sees Fig. 9), it has a plurality of blades 38 that radially are provided with and a lid 41 that covers fan body 39, and it has determined the exhaust channel 40 between fan body 39 and the blade 38.

Fan body 39 and lid 41 can be cast as one.

Engine room 19 is divided into two parts on its length direction; A chamber that is positioned at driver chamber M one side forms integral body with the sidewall that constitutes driver chamber M.Corresponding the discharge portion 37b of cooling fan 37 is provided with an exhausr port 42 to forwarder chamber M opening on the parts outer wall 19a that constitutes engine room 19.The driver lid 31 that covers driver chamber M has a deflation hole 43 towards power unit p lower opening, and it is identical with situation among first embodiment.At another indoor stator 28 of fixing electrical motor 11.

Adopt the purpose of this separated engine room to be to dwindle the die depth of cast engine chamber 19, thereby reduce manufacturing expense, and a kind of small and light engine room 19 can be provided, it forms an integral body with the sidewall that constitutes driver chamber M partly.

Simultaneously, as shown in Figure 8, the induction opening 44 that is communicated with engine room 19 is provided with opening in power unit P one side, perhaps opening above power unit P.

In addition, the support section to axle drive shaft 20 also improves in the present embodiment.

Ball bearing of main shaft 22 at belt-driving stepless speed change type gearing 18 1 side supporting driving shafts 20 comprises an outer race 22a and a race, inner 22b who loosely is contained on the axle drive shaft 20 who is pressed in the change speed gear box 16, and bearing 22 is fixed on the nut 48 that is screwed into axle drive shaft 20 1 ends and passes between the step part 49 that axle drive shaft 20 1 ends of a sleeve pipe 46 and 47 are provided with, sleeve pipe 46 is contained in the drive pulley 45 central part offices that constitute belt-driving stepless speed change type gearing 18, and sleeve pipe 47 is contained between drive pulley 45 and the race, inner 22b.

Thereby strengthened the mouth of axle drive shaft 20 with sleeve pipe 46 and 47, improved the fastness of axle drive shaft.

Simultaneously, as shown in figure 11, outer race 21a in another bearing 21 loosely is contained in the engine room 19, and push down by the cup spring 50 that is contained between outer race 21a and the engine room 19, pressure makes outer race contact the step part 51 that is located on axle drive shaft 20 other ends towards above-mentioned bearing 22.

Next as shown in figure 10, the outside in ball bearing of main shaft 21 and 22 is fixedly attached to outer race 21a(22a to an enclosing cover 52) on, enclosing cover 52 is made by elastic body, it has completely cut off race, inner 21b(22b) and outer race 21a(22a) between the space, thereby stop foreign matter to enter bearing 21 and 22.

The change speed gear box 16 that ball bearing of main shaft 21 and 22 are housed has one and the integrant flange 53 of casing, thereby covers bearing 21 and 22, and it further stops foreign matter to enter each bearing 21 and 22 with enclosing cover 52.

In power unit P according to the said structure of present embodiment, outside Cryogenic air sucks pyrotoxin by cooling fan 37 from induction opening 44, after carrying out interchange of heat with pyrotoxin, air is discharged power unit P from the exhausr port 42 that is located on the outer wall 19a, by driver chamber M and deflation hole 43, thus the temperature rise of control pyrotoxin.

Embodiment shown in Figure 12 to 17 relates to a kind of cooling mechanism of power unit, and it can obtain clean coolant air, and avoids dust and water to enter in the case.

In Figure 12, car body framework of numeral 111 expressions, it is seen from the side and is approximated to symbol U-shaped shape.Car body framework 111 comprises framework 111r behind preceding framework 111f, an intermediate frame 111d and.Car body framework 111 is covered by car body 121a, pedal 121b, bonnet 121c and a bottom 121d of synthetic resin.

On car body framework 111, or the anterior captive joint of preceding framework 111f one stature pipe 112.On head pipe 112, operably supporting a front-wheel 114f, so that handle front-wheel 114f with driving handle 115 by front fork 113.As shown in figure 23, handle 115 has an accelerator handle 115a and the potential device 115b that is used to detect accelerator handle 115a rotational angle.

Manage 112 front portions at head a control capsule 116 is housed, the front portion of control capsule 116 covers with protecgulum 121f.In control capsule 116, hold a controller 149(who constitutes by ECU and other circuit and see Figure 23), on controller, connect a charge circuit, a driving circuit and a battery or the like, they will be described below.

A battery case 122 that will describe in detail hereinafter is contained on the intermediate frame 111d of car body framework 111.A plurality of serial or parallel connection bonded assembly battery 136(Figure 23 are housed in the battery case 122), battery is connected on the driving circuit and controller 149 that hereinafter will describe.Supporting a power rotary unit 150 at intermediate frame 111d rear portion swingably with a pivot.Vide infra, an electrical motor 152 is arranged in the casing 151 of power rotary unit 150.Supporting trailing wheel 114r rotationally in casing 151 rear ends.Numeral 148 is the shock absorption devices that are inserted between power rotary unit 150 rear portions and the car body framework 111.

Next, above-mentioned bonnet 121c is fixedly mounted on the back framework 111r of car body framework 111.This bonnet 121c is approximately the hollow cylinder shape of a upper opening, and seat 126 is installed on bonnet 121 tops, and seat 126 can close or open.With hinge seat 126 is connected the front portion of bonnet 121c top, when the seat is in the seating position of falling (seeing Figure 12), covers the opening of bonnet 121c, and open the opening of bonnet 121c when rotating below forward at the seat.

In bonnet 121c, the front portion is provided with the luggage box 125 of a storage, and the rear portion is a charging box 127.As shown in figure 15, luggage box 125 front portions are provided with dark bottom and divide 125a, and the rear portion is provided with shallow bottom and divides 125b.Dark bottom is divided in the 125a can collect the helmet.As mentioned below, divide the rear portion of 125a to be provided with induction opening in dark bottom.

The front portion of charging box 127 sees from the side and is approximated to L shapedly that it divides 125b bottom protruding upward from the shallow bottom of luggage box 125, and its lug boss top opening enters shallow bottom and divides 125b.Charging box 127 holds a charger and the jack that is connected source of AC, and its opening part covers with a lid 128.Lid 128 usefulness hinges or miscellaneous part are connected in mounting portion 128a to outer cover portion 128b and go up formation.Mounting portion 128a is screwed the dark bottom that is connected luggage box 125 and divides on the trailing flank of 125a.When outer cover portion 128b was in level attitude (seeing solid line among Figure 15), the opening of lid 128 charge closing boxes 127 (was seen long and two-short dash line among Figure 15) opening is opened when outer cover portion 128b rises.Outer cover portion 128b upper surface (solid line among Figure 15) has charge circuit 129.Charge circuit 129 and charger are connected to battery 36.

Power rotary unit 150 is by DC motor 152, and belt-driven continuously variable transmission 153 and a final stage retarder 154 constitute, and they all are contained in the casing 151.Electrical motor 152 is contained in the dimple part 151a on casing 151 preceding right sides; Stepless speed change type gearing 153 is contained in the driver chamber 156 that is limited by the side cover 155 on casing 151 left sides; And final stage retarder 154 is contained in the gear chamber 158 that a bearing sub-assembly 157 by casing 151 left back portions limited.Driver chamber 156 is communicated with dimple part 151a via the gas port 134 that is located at bottom behind the dimple part 151a, and leads to extraneous air by the pore (not shown) that is located at its underpart.

Electrical motor 152 is fixed by bolts in the dimple part 151a of casing 151, the opening footpath of the cylindrical stator chamber 160 of bottom is suitably cooperated with the bore of casing 151, and turning cylinder 161 rotatably is supported between the base plate of armature chamber 160 and dimple part 151a.Turning cylinder 161 inserts with stepless speed change type gearing 153 left end portion shown in Figure 13 by dimple part 151a bottom and is coupled.Near fan 159 of bottom fixed installation of dimple part 151a, and the rotor 163 that magnet is constituted is fixed on the center that is bordering on dimple part 151a.

In armature chamber 160, fixedly mounted three stator coils 162, constituted the stator be located at dimple part 151a one side (left side among Figure 13), the on-off element (not shown) of formation driving circuit for example FET be installed in right side shown in Figure 13 with radiating gill 166.This armature chamber is provided with a pore 160a on the position of the radial direction of corresponding coil 162.Pore 160a leads to cold air path hereinafter described.Stator coil 162 is distributed on the hand of rotation equally spacedly, is in concentric relation with turning cylinder 161, and is connected on the driving circuit.

The radiator 166 that hereinafter will describe in detail is the pipe with approximate hexagonal section.Fix a FET in each side of radiator 166, and the surface is provided with radiator shutter within it.Cover radiator 166 with enclosing cover 165, between enclosing cover 165 and radiator 166, insert resin enclosing cover 165 is located securely.Radiator 166 usefulness bolts 198 are fixed on the armature chamber 160.Enclosing cover 165 is made of resin-molded product, and there is an admission port 165b on its right side.This admission port of enclosing cover 165 is connected with suction hole.

The center of radiator 166 inside circumferences is provided with a cond 168.By the annular space 169(that is limited between these radiator 166 in-to-in inside faces and the cond 168 hereinafter referred to as the cold air path) be used as the cold air path.Above-mentioned radiator shutter is located in this cold air path.There is an admission port 165b on the right side of cold air path 169, and is communicated with dimple part 151a inner chamber in its left side by pore 160a.

The above-mentioned driving circuit that will describe in detail hereinafter is made of six FET that are connected into bridge-type that are connected between the battery plus-negative plate, and each FET provides the electric current that produces alternating field according to the signal of coming self-controller.Cond 168 is connected in parallel with driving circuit 164 between positive and negative electrodes.

Numeral 170 is sensors that are used to detect S. A. 161 rotating speeds.Sensor 170 comprises magnet and MR element that is contained in the armature chamber 160 that is installed on the S. A. 161.

Between driving pulley 172 and driven pulley 173, adorn a belt 174, thereby constitute stepless speed change type gearing 153.Driving wheel 172 is contained on the S. A. 161 of electrical motor 152, and 173 of flower wheels are contained on the sleeve 178, and this sleeve 178 is contained on the input shaft 171 of final stage retarder 154 rotationally.Flower wheel is connected on the input shaft 171 with the first eccentric power-transfer clutch 175 and the second eccentric power-transfer clutch 176 that are arranged in parallel.

Driving pulley 172 comprises that one is fixed on stationary plane 172a on the S. A. 161 and one and is contained on the S. A. 161, but the movable surface 172b of axial motion.Drive movable surface 172b with a governor with pouring weight 177a 177, drive pulley axially moved, thus according to the rotating speed of S. A. 161 change belt 174 around diameter.

Similarly but driven pulley 173 comprises a stationary plane 173a and a movable surface 173b who is supported on axial motion on the sleeve 178 who is fixed on the sleeve 178.With the spring 180a that is in compressive state between the outer power-transfer clutch 179 that is contained in the driven pulley 173 and the second eccentric power-transfer clutch 176 the movable surface 173b of driven pulley 173 is pressed to stationary plane 173a one side.Movable surface 173b moves around diameter variation according to strap lug on the driving wheel 172, thus change belt around diameter.

The outer power-transfer clutch 179 of the second eccentric power-transfer clutch 176 is fixedly mounted on the sleeve 178, and internal clutch 180 is contained on the outer power-transfer clutch 181 of the first eccentric power-transfer clutch 175.The second eccentric power-transfer clutch 176 meshes according to the rotating speed of the outer power-transfer clutch 181 of the first eccentric power-transfer clutch 175 or separates.In first eccentric power-transfer clutch 175 bodies, outer power-transfer clutch 181 is fixed on the input shaft 171,182 of internal clutch are contained on the outer power-transfer clutch 179 of the second eccentric power-transfer clutch 176, and mesh or separate according to the rotating speed of the outer power-transfer clutch 179 of the second eccentric power-transfer clutch 176.The first eccentric power-transfer clutch 175 meshes when rotating speed is lower than the most effective speed of electrical motor 152 slightly, and simultaneously, the engagement rotating speed of the second eccentric power-transfer clutch 176 is lower than the geared speed of the first eccentric power-transfer clutch 175.

Structure to the first and second eccentric power-transfer clutchs 175 and 176 no longer describes in detail in this article.

Terminal retarder 154 has the gear 171a that is fixedly mounted on the input shaft 171, is fixedly mounted on gear 183a and 183b on the tween drive shaft 183, and is fixedly mounted on the gear 184a on the output shaft 184; Gear 171a and gear 183a engagement, gear 183b and gear 184a engagement.Input shaft 171 is supported on casing 151 and the bearing sub-assembly 157 rotationally, and its left end stretches into driver chamber 156 and is connected with stepless speed change type gearing 153.Output shaft 184 stretches to the casing right side, at the end of output shaft 184 fixed installation trailing wheel 114.

Shown in Figure 13 to 17, above-mentioned aspirate tube 188 comprises that a joint stationary pipes 187 is connected to the admission port 165b of enclosing cover 165, be located at two car body stationary pipes 190 and 191 of vehicle body side, and one is used for joint stationary pipes 187 is connected to connection pipe 189 on the first car body stationary pipes 190.

Joint stationary pipes 187 is made of the hollow plastic components of a cast form, and it has the part of an approximate circle tubular, and as shown in figure 16, it extends from enclosing cover 165 1 side direction oblique uppers.An approximately uniform opening 187a of admission port with enclosing cover 165 is arranged on left front of this joint stationary pipes, and be provided with a communication port 187b in its left back portion.Opening 187a is connected to the admission port of enclosing cover 165, and connection pipe 189 is connected to opening 187b.This joint stationary pipes 187 is equivalent to first pipe.

Connection pipe 189 is flexible rubber or plastic pipe.Part on it is a bellows.Be contained in the car body 121 to connection pipe 189 near normal, the opening 187b of its bottom opening jointing stationary pipes 187, and the top end opening of upwards opening links to each other with the first car body stationary pipes 190.

Shown in Figure 16 and 17, box of the shape approximation of the first car body stationary pipes 190, and the rear portion in the 125a is divided in the dark bottom that is located at luggage box 125.With screw the first car body stationary pipes 190 is fixed on the luggage box 125, its bottom opening is connected downwards and with connection pipe 189, and makes its open top 190b upwards be connected to the second car body stationary pipes 191.

The second car body stationary pipes 191 also is the shape of box-like, and its opening 191a(has only shown one) be located at two ends, the left and right sides.Second stationary pipes 191 is located at the dark bottom of luggage box 125 and divides 125a the rear portion, its left end opening is connected with first stationary pipes backward and at luggage box 125 rear portions, its right-end openings 191a then is positioned at the empty 125d that is located at luggage box 125 right walls, and in casing 121 opening to the right.The above-mentioned first car body stationary pipes 190 and the second car body stationary pipes 191 are equivalent to second pipe.

In the power unit cooling mechanism of present embodiment, 159 one-tenth unitary rotation of turning cylinder 161 and fan of electrical motor 152.Suck cold air by electric motor driven fan 159.Cold air by the right-end openings 191a of the second car body stationary pipes 191 of aspirate tube 188 sucks after flow through first stationary pipes 190, connection pipe 189 and joint stationary pipes 187, is transmitted to the admission port 165b of enclosing cover 165.When flowing through cold air path 169, cold air makes the FET cooling of driving circuit.Entered the chilled air cools coil 162 of dimple part 151a from pore 160a, and further flow through deflation hole 134 and enter driver chamber 156, cooling stepless speed change type gearing 153 is discharged away at last.Thereby may cool off the coil 162 and the stepless speed change type gearing 153 of driving circuit 164, electrical motor 152 effectively.

In the present embodiment, cold air is sucked by the opening 191a of the second car body stationary pipes 191 of aspirate tube 188; This opening of the second car body stationary pipes 191 is opened in car body, promptly opens in the space that is centered on by car body 121.Therefore might stop dust and water to enter coolant air, and can import electrical motor 152 and other equipment to the coolant air of cleaning, thereby protection electrical motor and other equipment are avoided the deleterious effect of dust and water.

In this cooling mechanism, aspirate tube 188 is located in the car body 121, and it is all selected along equipment to manage 190 and 191 path, or specifically select along the luggage box, these pipes are located in the car body 121, therefore might avoid the increase of total width, this is because stationary pipes 190 and 191 is not to design on the Width of car body, and has adopted high-capacity luggage box 125 again.

Further, enclosing cover 165 in the cooling mechanism is to be fixedly mounted on the casing 151 of power rotary unit 150, and second stationary pipes 191 is to be fixedly connected on the luggage box 125, and the admission port 165a of enclosing cover 165 is connected on second stationary pipes 191 by flexible connection pipe 189.Therefore, if casing 151 is along with spring and the rebound swing of trailing wheel 114r, swing by casing 151 can be absorbed by flexible connection pipe 189 flexural force that enclosing cover 165 forms, and therefore can prevent to occur on enclosing cover 165 and stationary pipes 187,190 and 191 extra stress.

In addition, in the battery-operated motor cycle of present embodiment, the charger box 127 that holds charger is located at the rear portion of luggage box 125; The opening of charger box 127 covers with enclosing cover 128, and it can open and close; The seat 126 that covers charger box 127 and enclosing cover 128 also can open and close.Therefore can stop rainwater to enter charger box fully, improve the reliability of motor bike thus.Have, because enclosing cover 128 is assembled together with charge circuit 129, the conductor length around the charger can shorten and simplify again.

Figure 18 represents the cooling mechanism according to an alternative embodiment of the invention.

In the present embodiment, as shown in the figure, the bonnet 121c of car body 121 is provided with opening 198, and the open end of the second car body stationary pipes 191 of aspirate tube 188 is connected on the opening 198.The luffer boards 199 that prevent that rainwater from entering are housed on the opening 198.

Present embodiment can prevent that also rainwater from entering the second car body stationary pipes 191 of aspirate tube 188, and therefore the cold air that can obtain cleaning is used for cool motors 152.Other CONSTRUCTED SPECIFICATION of this cooling mechanism and mode of operation and the foregoing description are as broad as long, no longer describe herein.

The radiator 166 that is illustrated in especially among Figure 19 to 21 is made by aluminium alloy extruded product, and it has the shape of approximate hexagon tubular, and its outside face is a hexahedron, and inside face is provided with many cooling vanes 167.Radiator 166 is to be fixedly mounted on the electric case 160 with 3 bolts 142, and bolt 142 axially passes electric case 160 and installs, the enclosing cover 165(coating member made from a resin) cover outside radiator.Enclosing cover 165 is fixed the substrate 147 that an inside is provided with gate driver circuit 148, and with the resin of filling out between enclosing cover 165 and radiator 166 outside faces 146 enclosing cover 165 is fixed on the radiator 166, for example uses epoxy resin.This enclosing cover 165 has a suction hole 165b to be connected with above-mentioned aspirate tube 188, and this radiator can form with aluminium alloy casting.

6 field effect transistor (FET) 135a, 135b, 135c, 135d, 135e and 135f(are housed on the radiator 166 hereinafter will use unsubscripted numeral), they respectively are located at 6 outside face one sides, constitute driving circuit 164.And then on inside face, arrange a power supply voltage regulation capacitor 168.Between the inside face of cond 168 and radiator 166, constitute the cold air path 137 that is communicated with aspirate tube 188.Aforesaid cooling vane 167 stretches into this cold air path 137.Cond 168 shown in Figure 23 is connected in parallel with driving circuit 164 between the both positive and negative polarity of battery 36.FET135 can be made up of a plurality of FET that are connected in parallel.

Driving circuit 164 among Figure 23 is made of the FET135 that connects into bridge-type, and wherein the drain electrode of the source electrode of the drain electrode of the source electrode of FET135a and FET135d and FET135b and FET135e, and the drain electrode of the source electrode of FET135c and FET135f is done bridge-type respectively and is connected.In driving circuit 164, the lead 140 that connects battery 136 anodes is contained on the side of radiator 166 outside faces, and a lead 141 of connection battery 136 negative terminals is contained on the another side of radiator 166 outside faces, the drain electrode of FET135a, 135b and 135c is connected to lead 140, and FET135d, the source electrode of 135e and 135f is connected to lead 141.

Particularly shown in Figure 13 and 19, lead 139 also is connected between the source electrode and drain electrode of FET135, and this lead is drawn casing 151 outsides.The end that encases 3 leads 139 with insulator 143 also is connected on the end face of radiator 166 with bolt 142.Bolt 142 inserts radiator 166 inside faces from casing 151 sides, bossing 165b is passed in the end of its insertion, stretches to the inside face of the radiator 166 in the enclosing cover 165, and stretches out from enclosing cover 165.As shown in figure 21,3 bolts 142 are approximated in a circumferential direction uniformly-spaced and arrange, one of them is in the tip position on the radiator 166 inside face vertical direction, and two other bolt is on the extreme lower position of vertical direction.

Make bolt 142 and radiator 166 form electrical isolations with insulator 143, and with the lead 139 of bolt one end connect box 151 sides, the other end connect the terminal 138 in enclosing cover 165 outsides.As shown in figure 22, terminal 138 is contained between the pair of flanges 165c, and flange 165c and enclosing cover 165 inside faces constitute whole, and it is used to lock enclosing cover 165 does not make it rotate, and bolt of rear end plate 142, thereby terminal 138 and bolt 142 are electrically connected.Terminal 138 is connected to stator coil 162 by the lead 145 that is contained on radiator 166 inside faces, and is connected by bolt 142 and lead 139 between the source electrode and drain electrode of FET135.Encase these FET135 with the resin of filling out between radiator 166 outside faces and enclosing cover 165 146, lead 139 and the lead that connects battery 136.

In addition, FET135 is connected to the gate driver circuit 148 on the substrate 147.As shown in figure 23, gate driver circuit comprises amplifying circuit and other circuit, and it links to each other with controller 149, according to the signal that comes self-controller 149 to the FET135 output drive signal.In Figure 23, digital 115b represents an acceleration pick-up that is used to detect accelerator handle 115a rotational angle; Numeral 196 expressions detect the speed sensor of the speed of a motor vehicle.Sensor 115b, 195 and 196 are connected to controller 149.

Next explain the mode of operation of present embodiment.

In this battery-operated motor cycle, the electric energy of battery 136 is supplied with the electrical motor 152 of power rotary unit 150 by driving circuit 164.Electrical motor 152 drives trailing wheel 114r.The electric energy of supplying with electrical motor 152 is according to operation and the road speed of quickening handle 115a, carries out according to the result of 149 pairs of acceleration pick-ups 194 of controller and car speed sensor 196 output signals.

The structure of power rotary unit 150 is as follows, and dimple part 151a is located in the casing 151; The electric case 160 of packing in this dimple part 151a of casing 151 constitutes engine room 131.In engine room 131, pack into S. A. 161 and stator coil 162 and the electrical motor 152 of packing into.Fixed installation radiator 166 on electric case 160, and the FET135 that constitutes driving circuit 164 is installed on radiator 166.Therefore might shorten the connecting wire 145 between stator coil 162 and the driving circuit 164, and not need to install the special-purpose member of driving circuit 164, can make the parts miniaturization.

In power rotary unit 150, the electric case 160 that makes the tubular under casing has a face of joint, be used for engaging with casing 151 in S. A. 161 axial middle parts, this electric case 160 is equipped with radiator 166, the bearing 132 of S. A. 161 and tachogen 170, thereby can reduce the sum of part, and therefore make compact power rotary unit 150.

The stator coil 162 that constitutes stator fixedly is assemblied in the electric case 160.Because this stator coil 162 and tachogen 170 are pre-assembled on the electric case 160, can be so that electric case 160 is assembled on the casing 151.

In this power rotary unit 150, radiator is made approximate hexagon, and the FET135 that constitutes driving circuit 164 is housed, with the outside face of enclosing cover 165 radiator covers, and resin inserted encase FET135 and lead 139 between enclosing cover 165 and the radiator 166.Therefore might firmly fix FET135 and protect FET135 effectively, make it avoid the infringement of dust and water.

In addition, the stator coil 160 of driving motor 152 is to be connected to driving circuit 164 with 3 bolts 142, the bolt that inserts is distributed on the peripheral direction of radiator inside face equally spacedly, and the bolt 142 of Bu Zhiing can just in time not be on the extreme lower position of radiator 166 vertical direction like this.Therefore even under the situation of ponding is arranged at radiator 166 bottoms, can not occur such as any problems such as electrolytic corrosions yet.

The bolt 142 that insertion is provided with enclosing cover 165 projection sections of flange 165c has guaranteed the spacing between radiator 166 and the blade 167, therefore needn't use insulating washer, has reduced number of parts.In addition, be provided with and 165 one-tenth single-piece flanges of enclosing cover 165c, it is used for lock terminal 138 and prevents its rotation, and this flange can help the connection of terminal 138.

Figure 24 represents the battery-driven car power unit according to another embodiment of the present invention.This figure is the amplification view of a main portion, and therefore the same parts that it adopts identical numeral to occur in the above-described embodiments no longer describes and explain these parts.

As shown in the figure, the radiator 166 according to present embodiment is integrant with electric case 160.In this electric case, bearing portions 160a is located at the centre of axis direction, and radiator 166 is located at its right side, and the cylindrical portion of covering stator coil 162 is located at the left side.The bearing 132 of supporting rotating shaft 161 is housed in bearing portions 160a.In left side tachogen 170 is installed near bearing 132.

According to present embodiment,, can reduce number of parts, thereby can be convenient to carry out the fitting work of power unit because radiator 166 is integrant with electric case 160.And because tachogen is contained in the opposite side relative with radiator 166, can avoid interference, and make compacter that the size of these parts can do.

Describe the battery fastening structure of battery-operated motor cycle shown in Figure 12 in detail below with reference to Figure 12 and additional Figure 25 to 28.

Intermediate frame 111d is made of two transverse pipe 237 of extending along the width over sides of car body direction, and is installed in tandem on the graphic U-shaped pipe 235 that extends back.The front portion of intermediate frame 111d is connected to preceding framework 111f, and rear end, left both sides is linked to be integral body with back framework 111 γ on the right side.The front part sides of intermediate frame 111d covers with leg plate washer 121a, and the left and right sides covers with bottom 121d.In addition, as described below, also stretcher 121b is connected on the intermediate frame 111d.

The power rotary unit is supported on intermediate frame 111d rear portion swingably, and is contained in middle pipe 235 bottoms in tandem to stay bearing plate 236F and the 236R that the width over sides of car body direction is extended.

The support 223 usefulness iron plates represented as Figure 25 to 27 are pressed into, and it sees the shape of approximate door, horizontal expansion between pipe 237 from the front.These support 223 usefulness bolts removably are contained on the installation component 238, and its two ends are fixed on the left and right sides of U-shaped pipe 235, and its lower surface is contacted with the upper surface of battery case 122 by an elastic body 239.

Baffle component 241 is permanently connected at the two ends, the left and right sides on support 223 tops.As described below, stretcher 121b is connected on these baffle components 241.Elastic body 239 is to make with rubber or other and aforementioned elastic body 240 materials similar, and all forms the surface with the upper surface of the lower surface of support 223 and battery case 122 and contact.

Special is epoxy casting resin by stretcher 121b shown in Figure 28, and at the rear portion of approximate flat pedal part 242 one and the integrant semi-barrel shape pillar 243 of stretcher 121b is housed.Be provided with projectedly on stretcher 121b and its formation single-piece boss 242a and a plurality of strengthening rib 242b, boss 242a is located at the left and right sides of center on the length direction at pedal part 242 back sides, and strengthening rib 242b extends on the width over sides of car body direction.Boss 242a and stretcher 121b separately constitute.

The forward position of the pedal part 242 of stretcher 121b, and is connected on the bonnet 121c with 3 screws at the place, upper edge of leg portion 243 to anterior inner cap 121e similarly with two thread cutting screws or bolted connection; In addition, by means of the bolt 244 that penetrates installation from the top boss 242a is connected on the aforesaid baffle component 241.As shown in figure 26, the upper surface of the following end in contact baffle component 241 of boss 242a, and make bolt 244 and nut 245 engagements that are installed in the baffle component 241.Numeral 295 expressions hang over stretcher 121b dual-side along last lateral margin, are used to cover the both sides of support 223.

Battery case 122 is arranged in below the stretcher 121b like this, and stretcher 121b provides an osed top space, therefore can overslaugh equipment on every side.Therefore might install large-scale battery case and high capacity cell is installed.Battery case 122 is contained on stay bearing plate 236F and the 236R, and these stay bearing plates are fixedly mounted on the car body framework 111, and with support 223 battery case 122 is clamped on the car body framework 111 securely.Connecting pin pedal 121b on support 223, and therefore do not need special-purpose pillar to keep the rigidity of stretcher 121b, thus can reduce the weight of number of parts and car.

In addition, stretcher 121b in this motor bike can remove from car body framework 111, only need dismantle is fixed on two thread cutting screws of pedal part 242 front portions, is fixed on 3 thread cutting screws on leg portion 243 tops, and pulls down two bolts from support 223.Therefore, when the maintenance battery, can easily pull down stretcher 121b and maintenance battery.

A kind of battery-driven car with oscillating type power unit has been described in the various embodiments described above; Yet the present invention also can be used for the battery-driven car that power unit can not be swung with respect to car body.

Claims (3)

1, battery-driven car comprises:

A car body,

A battery that supports by above-mentioned car body,

An electrical motor, it is by an axle drive shaft, and described electrical motor is by described battery supply of electrical energy,

An electric bicycle drive wheel, and

Power transmission is used for from the described battery-driven car drive wheels transmission of the described driving axial of described electrical motor power, and described power transmission produces the low slightly rotary speed working of speed with the maximal efficiency than described electrical motor.

2, battery-driven car as claimed in claim 1, wherein said power transmission comprise an automatic accentric power-transfer clutch.

3, battery-driven car as claimed in claim 1, wherein said transmitting device comprise an automatic conveying device.

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