CN207809021U - Electric drive integrates axle assembly and electric vehicle - Google Patents

Abstract

The utility model provides a kind of integrated axle assembly of electric drive, including electric power assembly, electric power assembly includes power motor, speed changer and differential mechanism, differential mechanism tool there are two differential mechanism output section and with differential mechanism input unit, power motor is driven by speed changer and differential mechanism input unit to be connected；Axle assembly, axle assembly include the axle case assy and two semiaxis being connected with two differential mechanism output sections one-to-one correspondence for installing electric power assembly；Central parking module and P for braking the differential mechanism keep off halting mechanism assembly；Central parking module and P gear halting mechanism assemblies are installed simultaneously, effective parking is remained in central parking Module Fail or damage；The utility model also provides a kind of electric vehicle, axle assembly is integrated including vehicle frame and electric drive above-mentioned, due to integrating axle assembly using electric drive above-mentioned, the electric vehicle of the utility model remains to effective parking in central parking Module Fail or damage, and the case where parking can be avoided not release error starting electric vehicle under situation.

Description

Electric drive integrates axle assembly and electric vehicle

Technical field

The utility model belongs to vehicle technology field, more specifically, be related to a kind of electric drive integrate axle assembly and Electric vehicle.

Background technology

Central parking module can easily carry out reliable parking, but parking control manipulates independently of each other with gear, has It is likely to occur central parking and does not release the case where just starting vehicle also, be easy to damage central parking module in this way.

Electric drive integrates the electric power assembly of axle assembly since quality is big, barycenter deviates axle assembly farther out, to total to bridge At there is high torque, it is be easy to cause the unstable of axle assembly, influences the power transfer performance between electric power assembly and axle assembly.

Utility model content

The purpose of this utility model is to provide a kind of electric drive integrate axle assembly, with solve it is existing in the prior art in The technical issues of centre parking module is easily damaged.

To achieve the above object, the technical solution adopted in the utility model is：A kind of integrated axle assembly of electric drive, packet are provided It includes：

Electric power assembly, the electric power assembly include power motor, speed changer and differential mechanism, and it is poor that the differential mechanism has Fast device input unit and two differential mechanism output sections, the power motor are driven by the speed changer and the differential mechanism input unit It is connected；

Axle assembly, the axle assembly include axle case assy and two semiaxis, and the electric power assembly is mounted on the axle housing On assembly, two semiaxis and the differential mechanism are respectively positioned in the axle case assy, two semiaxis and two differences Fast device output section, which corresponds, to be connected；

Central parking module, the center parking module are mounted on the electric power assembly, and for braking the difference Fast device；

P keeps off halting mechanism assembly, and the P gears halting mechanism assembly is mounted on the electric power assembly, and for braking The differential mechanism.

Further, the central parking module and P gear halting mechanism assemblies are used to directly brake the differential Device input unit.

Further, the differential mechanism input unit includes differential mechanism input gear；

It is described center parking module include：First parking babinet, parking axis, the parking braking for braking the parking axis Device and the parking gear being fixed on the parking axis, the shell of the first parking babinet and the electric power assembly are fixed, The parking gear is engaged with the differential mechanism input gear, and the parking axis is connected with the parking brake.

Further, the P gears halting mechanism assembly includes：Second parking babinet, P gear ratchets and P keep off parking device, described The shell of second parking babinet and the electric power assembly is fixed, and the P gears ratchet is fixed on the parking axis；The P gears Parking device has pawl, and when P keeps off parking, the pawl buckles into the tooth socket of the P gears ratchet.

Further, the speed changer includes first axle, the second axis, third axis and synchronizer；

The first axle is connected with the motor output shaft of the power motor, and input gear is fixed in the first axle；

It is fixed with the intermediate gear engaged with the input gear on second axis, and multiple gear driving tooths are installed Wheel；

The output gear engaged with the differential mechanism input gear is fixed on the third axis, and be equipped with it is each described Gear driving gear corresponds the gear driven gear of engagement；

The synchronizer is used to select the gear driving gear of specific gear to participate in passing with the gear driven gear The gear driving gear of dynamic or all gears is not involved in transmission with the gear driven gear.

Further, the input gear, the intermediate gear, each gear driving gear, the output gear and Each gear driven gear is helical gear.

Further, the gear driven gear includes a gear driven gear and two gear driven gears；

The gear driving gear includes the gear driving gear engaged with the gear driven gear and is kept off with described two The two gear driving gear of driven gear engagement；

The synchronizer can select that the gear driven gear is engaged or detached with the third axis, can also select Driven gear is kept off by described two to engage or detach with the third axis.

Further, the box portion of the speed changer includes preceding babinet and rear box, and the power motor is mounted on institute Before stating on babinet, the rear box is fixed with the preceding babinet.

Further, the power motor includes active cooling structure, and the active cooling structure includes for the power First cooling cycle channel of motor cooling.

Further, the active cooling structure further includes secondary cooling apparatus, and the is equipped in the secondary cooling apparatus The coolant liquid in two cooling cycle channels, second cooling cycle channel cools down in the secondary cooling apparatus to described first The coolant liquid of circulation canal is cooled down.

The advantageous effect that electric drive provided by the utility model integrates axle assembly is：Compared with prior art, this practicality On the one hand novel electric drive integrated bridge assembly is stayed using the setting of central parking module combination P gear halting mechanism assemblies in center It remains to realize effective parking under vehicle failure or abnormal conditions, on the other hand since P keeps off parking power in the case where not releasing Motor can not start, the case where parking can be avoided not release error starting electric vehicle under situation.

The two of the purpose of this utility model are to provide a kind of electric vehicle, to solve central parking existing in the prior art The technical issues of module is easily damaged.

To achieve the above object, the technical solution adopted in the utility model is：A kind of electric vehicle is provided, including vehicle frame is with before The electric drive stated integrates axle assembly, and the axle case assy is connect with the vehicle frame.

Further, further include damper, the damper connects the electric power assembly and the vehicle frame.

The advantageous effect of electric vehicle provided by the utility model is：Compared with prior art, the utility model is due to adopting Axle assembly is integrated with electric drive above-mentioned, electric drive integrates axle assembly and keeps off halting mechanism assembly using central parking module combination P Setting, on the one hand remain to realize effective parking under central parking failure or abnormal conditions, on the other hand due to P keep off parking In the case where not releasing, power motor can not start, the case where parking can be avoided not release error starting electric vehicle under situation.

Description of the drawings

It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this practicality is new Some embodiments of type for those of ordinary skill in the art without having to pay creative labor, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is the transmission system schematic diagram that the electric drive that the utility model embodiment provides integrates axle assembly；

Fig. 2 is the drive mechanism schematic diagram that the electric drive that the utility model embodiment provides integrates axle assembly；

Fig. 3 is the dimensional structure diagram that the electric drive that the utility model embodiment provides integrates axle assembly；

Fig. 4 is the structural schematic diagram after removal axle assembly in Fig. 3；

Fig. 5 is that the P in Fig. 3 keeps off halting mechanism assembly part structural schematic diagram；

Fig. 6 is the connection diagram that the electric drive that the utility model embodiment provides integrates axle assembly and vehicle frame；

Fig. 7 is the structural schematic diagram for the electric vehicle that the utility model embodiment provides.

Wherein, each reference numeral in figure：

1- electric power assemblies；11- power motors；12- speed changers；1201- first axles；The second axis of 1202-；1203- thirds Axis；1204- input gears；1205- intermediate gears；1206- two gear driving gears；1207- mono- keeps off driving gear；1208- bis- is kept off Driven gear；1209- mono- keeps off driven gear；1210- synchronizers；1211 output gears；Babinet before 1212-；1213- rear box； 13- differential mechanisms；1301- differential mechanism input gears；The electro-hydraulic shift execution modules of 14-；2- axle assemblies；21- axle case assys；22- half Axis；The centers 3- parking module；31- the first parking babinets；32- parking axis；33- parking gears；4-P keeps off halting mechanism assembly； 41- the second parking babinets；42-P keeps off ratchet；43-P keeps off parking device；431- pawls；5- active cooling structures；51- secondary coolings fill It sets；52- coolant liquid actuators；53- inlets；54- liquid outlets；6- dampers；7- vehicle frames.

Specific implementation mode

In order to make technical problem to be solved in the utility model, technical solution and advantageous effect be more clearly understood, with Lower combination accompanying drawings and embodiments, the present invention will be further described in detail.It should be appreciated that specific reality described herein It applies example to be only used to explain the utility model, is not used to limit the utility model.

It should be noted that when element is referred to as " being fixed on " or " being set to " another element, it can be directly another On one element or it is connected on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.

It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on ... shown in the drawings or position are closed System, is merely for convenience of describing the present invention and simplifying the description, does not indicate or imply the indicated device or element is necessary With specific orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.

In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature.The meaning of " plurality " is two or two in the description of the present invention, More than, unless otherwise specifically defined.

Also referring to Fig. 1 to Fig. 5, axle assembly 2 now is integrated to electric drive provided by the utility model and is illustrated.Electricity drives Dynamic integrated axle assembly 2, including electric power assembly 1, axle assembly 2 and central parking module 3；Electric power assembly 1 includes power motor 11, speed changer 12 and differential mechanism 13, differential mechanism 13 have differential mechanism input unit and two differential mechanism output sections, power motor 11 logical Speed changer 12 is crossed with the transmission of differential mechanism input unit to be connected；Axle assembly 2 includes axle case assy 21 and two semiaxis 22, electric power assembly 1 is mounted on axle case assy 21, and two semiaxis 22 and differential mechanism 13 are respectively positioned in axle case assy 21, two semiaxis 22 and two differences Fast device output section, which corresponds, to be connected；Central parking module 3 is mounted on electric power assembly 1, and is used for brake differential device 13；P Halting mechanism assembly 4 is kept off, P keeps off halting mechanism assembly 4 and is mounted on electric power assembly 1, and is used for brake differential device 13.

Electric drive provided by the utility model integrates axle assembly 2, and compared with prior art, the utility model electric drive is integrated Axle assembly 2 combines the setting of P gear halting mechanisms assembly 4 using central parking module 3, on the one hand in central parking failure or different It remains to realize effective parking in the case of often, on the other hand since P gear parking power motors 11 in the case where not releasing can not open The case where moving, parking can be avoided not release error starting electric vehicle under situation.

Further, also referring to Fig. 2 and Fig. 4, the one of axle assembly is integrated as electric drive provided by the utility model Kind specific implementation mode, central parking module 3 and P gear halting mechanisms assembly 4 are used to direct brake differential device input unit.Center 4 direct brake differential device input unit of parking module 3 and P gear halting mechanisms assembly, the transmission chain of braking is short out, not by speed changer 12 Gear influence, brake it is sensitiveer effectively.

Further, referring to Fig. 2, integrating a kind of specific implementation of axle assembly as electric drive provided by the utility model Mode, differential mechanism input unit include differential mechanism input gear 1301；Central parking module 3 includes the first parking babinet 31, parking Axis 32, the parking brake for braking parking axis 32 and the parking gear 33 being fixed on parking axis 32, the first parking babinet 31 fix with the shell of electric power assembly 1, and parking gear 33 is engaged with differential mechanism input gear 1301, parking axis 32 and parking system Dynamic device is connected.When central 3 parking of parking module, the output shaft of parking brake is connect with parking axis 32, parking brake braking Parking axis 32, parking axis 32 is by gear engaged transmission brake differential device input gear 1301, to reach the mesh of central parking , parking is simple and reliable for structure.

Specifically, the output shaft of parking brake is equipped with internal spline, and parking axis 32 is equipped with external splines, passes through internal spline With the cooperation of external splines, linkage of the parking brake to parking axis is realized.

Further, also referring to Fig. 2 and Fig. 5, the one of axle assembly is integrated as electric drive provided by the utility model Kind of specific implementation mode, it includes that the second parking babinet 41, P gear ratchets 42 and P keep off parking device 43 that P, which keeps off halting mechanism assembly 4, and second Parking babinet 41 and the shell of electric power assembly 1 are fixed, and P gear ratchets 42 are fixed on parking axis 32；P, which keeps off parking device 43, has spine Pawl 431, when P keeps off parking, pawl 431 buckles into the tooth socket of P gear ratchets 42.Pawl 431 buckles into real in the tooth sockets of P gear ratchets 42 The braking that ratchet 42 is now kept off to P, to realize the braking to the braking of parking axis 32 and to differential mechanism input unit.

Preferably, the second parking babinet 41 is fixedly arranged on the first parking babinet 31, enables to P gear halting mechanisms total in this way Structure at, central parking module and electric power assembly is compacter, integrated level higher.

Preferably, P keeps off ratchet 42 and is coordinated by internal spline and parking gear 33, and internal spline connects so that parking axis 32, P gears 33 uniform forces of ratchet 42 and parking gear, to neutral good.

Further, also referring to Fig. 1 and Fig. 2, the one of axle assembly is integrated as electric drive provided by the utility model Kind specific implementation mode, speed changer 12 include first axle 1201, the second axis 1202, third axis 1203 and synchronizer 1210；First Axis 1201 is connected with the motor output shaft of power motor 11, and input gear 1204 is fixed in first axle 1201；Second axis 1202 On be fixed with the intermediate gear 1205 engaged with input gear 1204, and multiple gear driving gears are installed；Third axis 1203 On be fixed with the output gear 1211 engaged with differential mechanism input gear 1301, and be equipped with and each gear driving gear one is a pair of The gear driven gear that should be engaged；Synchronizer 1210 is used to select the gear driving gear of specific gear to join with gear driven gear It is not involved in transmission with the gear driving gear of transmission or all gears and gear driven gear.Synchronizer 1210 selects difference The transmission of the gear driving gear of gear gear different from the cooperation realization of gear driven gear, the gear driving tooth of all gears It is neutral gear that wheel is not involved in transmission then with gear driven gear.

Preferably, synchronizer 1210 is mounted on third axis 1203, and each gear driving gear is respectively solid with the second axis 1202 Fixed, each gear driven gear is mounted on using needle bearing on third axis 1203 with third axis 1203, and synchronizer 1210 passes through control The different gears of mobile selection of shift fork processed.Preferably, output gear 1211 is shaft gear, and transmission is more stablized.

Further, referring to Fig. 2, integrating a kind of specific implementation of axle assembly as electric drive provided by the utility model Mode, input gear 1204, intermediate gear 1205, each gear driving gear, output gear 1211 and each gear driven gear are equal For helical gear.Using Helical gear Transmission so that being entirely driven more steady, low noise, transmission efficiency, and bigger can be transmitted Torque.

Preferably, output gear 1211 is shaft gear, and transmission is more stablized.

Further, referring to Fig. 2, integrating a kind of specific implementation of axle assembly as electric drive provided by the utility model Mode, gear driven gear include that a gear driven gear 1209 and two keeps off driven gear 1208；Gear driving gear includes and one The gear driving gear 1207 and the two gear driving gear engaged with two gear driven gears 1208 that gear driven gear 1209 engages 1206；Synchronizer 1210 can be selected gear driven gear 1209 and third axis 1203 engagement or be detached, can also select by Two gear driven gears 1208 are engaged or are detached with third axis 1203.Two gear speed changes, simple in structure small and exquisite, speed ratio is big, torque is big, tool There are stronger power performance, preferable maneuverability that can meet the requirement of light medium sized vehicle.

Preferably, two gear driving gear 1206 is shaft gear, and transmission is more stablized.

Preferably, electric power assembly 1 further includes electro-hydraulic shift execution module 14, and electro-hydraulic shift execution module 14 is mounted on On the babinet of speed changer 12, shift gears for controlling speed changer 12；Corresponding sensing is installed in electro-hydraulic shift execution module 14 Device and delicate flow valve, external electronic control unit can be made a response by the signal of collection, can accurately be controlled The shift speed of speed changer 12 processed, the when segmentum intercalaris of shift switching, make 12 smooth gear shifting of speed changer, fast response time, realize stepless Speed change.

Further, referring to Fig. 4, integrating a kind of specific implementation of axle assembly as electric drive provided by the utility model The box portion of mode, speed changer 12 includes preceding babinet 1212 and rear box 1213, and power motor 11 is mounted on preceding babinet 1212 On, rear box 1213 is fixed with preceding babinet 1212.In the case where ensureing bonding strength, gearbox volume is enabled to as possible Small, structure is more compact.

Further, referring to Fig. 4, integrating a kind of specific implementation of axle assembly as electric drive provided by the utility model Mode, power motor 11 include active cooling structure 5, and active cooling structure 5 includes the first cooling cooled down for power motor 11 Circulation canal (not shown).Effectively power motor 11 can be cooled down using active cooling structure 5, avoid power electric Machine 11 overheats, and is more suitable for long-time, high rotating speed, high-power operating.

Further, referring to Fig. 4, integrating a kind of specific implementation of axle assembly as electric drive provided by the utility model Mode, active cooling structure further include secondary cooling apparatus 51, and the second cooling cycle channel is equipped in secondary cooling apparatus 51, the The coolant liquid in two cooling cycle channels cools down the coolant liquid in the first cooling cycle channel in secondary cooling apparatus 51.The After long-time circulating cooling, the temperature of its own is easy to remain high the coolant liquid in one cooling cycle channel, cannot continue Power motor 11 is effectively cooled down, is carried out using the coolant liquid in second cooling cycle channel pair the first cooling cycle channel It is cooling, so that the coolant liquid in the first cooling cycle channel is preferably persistently cooled down power motor 11, the first cooling cycle channel and Second cooling cycle channel is arranged in juxtaposition in secondary cooling apparatus 51, and fluid exchange does not occur for the two, passes through the loop of multilayer Carry out convective heat exchange.

Preferably, active cooling structure 5 further includes coolant liquid actuator 52, and coolant liquid actuator 52 promotes the first cooling to follow The coolant liquid in ring channel recycles, and acceleration takes the heat that power motor 11 generates in secondary cooling apparatus 51 out of, and then by the Coolant liquid in two cooling cycle channels is taken away, and cooling effect is more preferable；Preferably, it is total to be integrated into electric power for coolant liquid actuator 52 On 1, structure is more compact, more efficient.

Preferably, the first cooling cycle channel is oil cooling gallery, is cooled down using cooling oil, and the second cooling cycle is logical Road is water-cooling channel, is cooled down using cooling water, and coolant liquid actuator 52 is Oil pump electrical machinery, and Oil pump electrical machinery twitches cooling oil It is recycled in the first cooling cycle channel, accelerates the heat exchange of cooling oil and power motor 11, accelerate the first cooling cycle logical The heat exchange in road and the second cooling cycle channel accelerates to cool down power motor 11, and cooling effect is more preferable.

Preferably, the second cooling cycle channel is equipped with inlet 53 and liquid outlet 54, and external coolant liquid is from inlet 53 The second cooling cycle channel is flowed into, is flowed out again from liquid outlet 54 after heat exchange occurs with the first cooling cycle channel, belongs to external Cooling structure preferably can persistently cool down the coolant liquid in the first cooling cycle channel, and then preferably cooling power motor 11, Power motor 11 is set to be maintained at high performance state for a long time.

Also referring to Fig. 6 and Fig. 7, now electric vehicle provided by the utility model is illustrated.Electric vehicle, including vehicle frame 7 and the electric drive of any one of aforementioned embodiment integrate axle assembly, axle case assy 21 is connect with vehicle frame 7.

Electric vehicle provided by the utility model, compared with prior art, due to integrating axle assembly using electric drive above-mentioned 2, electric drive integrates the setting that axle assembly combines P gear halting mechanisms assembly 4 using central parking module 3, is on the one hand stayed in center It remains to realize effective parking under vehicle failure or abnormal conditions, on the other hand since P keeps off parking power in the case where not releasing Motor can not start, the case where parking can be avoided not release error starting electric vehicle under situation.

Further, also referring to Fig. 1 and Fig. 6, a kind of specific implementation as electric vehicle provided by the utility model Mode, further includes damper 6, and damper 6 connects electric power assembly 1 and vehicle frame 7.Tire potted road surface when driving, road surface pair The impact acceleration that electric drive integrates axle assembly 2 reaches several acceleration of gravity sometimes, with big retarding than speed changer 12 1 integrated installation of electric power assembly on axle assembly 2, barycenter far from axle assembly 2 to axle assembly 2 is formed it is sizable Torque can effectively reduce impact after electric power assembly 1 installs damper 6 additional, reach electric power assembly 1 as possible and jumped with axle assembly 2 It is dynamic to synchronize, the torque between electric power assembly 1 and axle assembly 2 can be effectively reduced, is ensured between electric power assembly 1 and axle assembly 2 Connection reliability ensures power transmission stability, ensures that entire electric drive integrates the safety of axle assembly.

Preferably, damper 6 is connected to one end of the separate axle assembly 2 of electric power assembly 1, electric power can be made total in this way More stablize at 2 installation, keeps the power transmission of electric power assembly more stable and safety.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this All any modification, equivalent and improvement etc., should be included in the utility model made by within the spirit and principle of utility model Protection domain within.

Claims (12)

1. electric drive integrates axle assembly, which is characterized in that including：

Electric power assembly, the electric power assembly include power motor, speed changer and differential mechanism, and the differential mechanism has differential mechanism Input unit and two differential mechanism output sections, the power motor are driven phase by the speed changer and the differential mechanism input unit Even；

Axle assembly, the axle assembly include axle case assy and two semiaxis, and the electric power assembly is mounted on the axle case assy On, two semiaxis and the differential mechanism are respectively positioned in the axle case assy, two semiaxis and two differential mechanisms Output section, which corresponds, to be connected；

Central parking module, the center parking module are mounted on the electric power assembly, and for braking the differential mechanism；

P keeps off halting mechanism assembly, and the P gears halting mechanism assembly is mounted on the electric power assembly, and described for braking Differential mechanism.

2. electric drive as described in claim 1 integrates axle assembly, it is characterised in that：The center parking module and P gears Halting mechanism assembly is used to directly brake the differential mechanism input unit.

3. electric drive as claimed in claim 2 integrates axle assembly, it is characterised in that：The differential mechanism input unit includes differential mechanism Input gear；

It is described center parking module include：First parking babinet, parking axis, the parking brake for braking the parking axis and The shell of the parking gear being fixed on the parking axis, the first parking babinet and the electric power assembly is fixed, described Parking gear is engaged with the differential mechanism input gear, and the parking axis is connected with the parking brake.

4. electric drive as claimed in claim 3 integrates axle assembly, it is characterised in that：The P keeps off halting mechanism assembly：The Two parking babinets, P gear ratchets and P keep off parking device, and the shell of the second parking babinet and the electric power assembly is fixed, described P gear ratchets are fixed on the parking axis；The P gears parking device has pawl, and when P keeps off parking, the pawl buckles into the P gears In the tooth socket of ratchet.

5. electric drive as claimed in claim 4 integrates axle assembly, it is characterised in that：The speed changer includes first axle, second Axis, third axis and synchronizer；

The first axle is connected with the motor output shaft of the power motor, and input gear is fixed in the first axle；

It is fixed with the intermediate gear engaged with the input gear on second axis, and multiple gear driving gears are installed；

It is fixed with the output gear engaged with the differential mechanism input gear on the third axis, and is equipped with and each gear Driving gear corresponds the gear driven gear of engagement；

The synchronizer is used to select the gear driving gear of specific gear to participate in being driven with the gear driven gear, or The gear driving gear of all gears is not involved in transmission with the gear driven gear.

6. electric drive as claimed in claim 5 integrates axle assembly, it is characterised in that：The input gear, the intermediate gear, Each gear driving gear, the output gear and each gear driven gear are helical gear.

7. as electric drive described in claim 5 or 6 integrates axle assembly, it is characterised in that：The gear driven gear includes one Keep off driven gear and two gear driven gears；

The gear driving gear includes the gear driving gear engaged with the gear driven gear and is kept off with described two driven The two gear driving gear of gear engagement；

The synchronizer can select that the gear driven gear is engaged or detached with the third axis, can also select institute Two gear driven gears are stated to engage or detach with the third axis.

8. as claim 1 to 6 any one of them electric drive integrates axle assembly, it is characterised in that：The babinet of the speed changer Part includes preceding babinet and rear box, and the power motor is mounted on the preceding babinet, the rear box and the preceding babinet It is fixed.

9. as claim 1 to 6 any one of them electric drive integrates axle assembly, it is characterised in that：The power motor includes Active cooling structure, the active cooling structure include the first cooling cycle channel cooled down for the power motor.

10. electric drive as claimed in claim 9 integrates axle assembly, it is characterised in that：The active cooling structure further includes two Secondary cooling device, the secondary cooling apparatus is interior to be equipped with the second cooling cycle channel, the cooling in second cooling cycle channel Liquid cools down the coolant liquid in first cooling cycle channel in the secondary cooling apparatus.

11. electric vehicle, including vehicle frame, it is characterised in that：Further include that electric drive as described in any one of claim 1 to 10 is integrated Axle assembly, the axle case assy are connect with the vehicle frame.

12. electric vehicle as claimed in claim 11, it is characterised in that：Further include damper, the damper connects the electricity Power assembly and the vehicle frame.