CN114312295B - Integrated electric drive system and electric automobile - Google Patents

Abstract

The invention belongs to the technical field of electric automobiles, and particularly relates to an integrated electric driving system and an electric automobile. The integrated electric drive system comprises a motor body, a speed reducer body, an integrated shell and a controller connected with the motor body; the motor output shaft of the motor body is connected with the speed reducer input shaft of the speed reducer body; the integrated housing comprises a support housing for supporting the controller, a motor outer housing for mounting the motor body, and a reducer housing for mounting the reducer body; the support housing is disposed above the motor housing and the speed reducer housing. The design of the integrated shell improves the integration level, compactness and reliability of the integrated electric drive system, and improves the mode of the integrated electric drive system and NVH performance of an automobile.

Description

Integrated electric drive system and electric automobile

Technical Field

The invention belongs to the technical field of electric automobiles, and particularly relates to an integrated electric driving system and an electric automobile.

Background

The electric drive system is a core component of the electric automobile, and with the continuous development of new energy automobiles, the higher the arrangement requirement on the automobile drive system is. The electric drive system is formed by combining components such as a drive motor, a motor controller, a transmission, an air compressor, a water pump, a whole vehicle controller, a vehicle-mounted charger, a direct current converter and the like. In the prior art, an integrated control shell of an electric drive system is usually arranged at the top of a stator shell of a drive motor, a speed changer is arranged at the output shaft end of the drive motor, and an air compressor is hung on the speed changer through a bracket; however, such an integrated electric drive system has disadvantages of large overall weight, low integration, large housing space, and high mold and material costs.

Disclosure of Invention

The invention solves the technical problems of low integration level, large shell space and the like of an electric drive system in the prior art, and provides an integrated electric drive system and an electric automobile.

In view of the above problems, an integrated electric drive system provided by an embodiment of the present invention includes a motor body, a reducer body, an integrated housing, and a controller connected to the motor body; the motor output shaft of the motor body is connected with the speed reducer input shaft of the speed reducer body; the integrated housing comprises a support housing for supporting the controller, a motor outer housing for mounting the motor body, and a reducer housing for mounting the reducer body; the support housing is disposed above the motor housing and the speed reducer housing.

Optionally, the integrated electric driving system further comprises an electric control shell, wherein a mounting groove for mounting the controller is formed in the electric control shell, and the notch edge of the mounting groove of the electric control shell is connected with the upper end face of the supporting shell; and a cooling water channel for cooling the controller is arranged on the support shell.

Optionally, a battery installation space with an opening facing the installation groove is further formed on the support shell; the integrated electric drive system further includes a battery mounted in the battery mounting space.

Optionally, the integrated electric drive system further comprises an air conditioner compressor and a water pump both mounted on the reducer housing; the air conditioner compressor and the water pump are both connected with the controller.

Optionally, the controller includes a dc bus mounted on the electronic control housing, and a first integrated module and a second integrated module both mounted in the mounting slot; the first integrated module is connected with an automobile power battery;

the second integrated module comprises a capacitor module, an IGBT module and a three-phase copper bar; the capacitor module is connected with an automobile power battery through the direct current bus; the three-phase copper bars are connected with three-phase terminals of the motor body; the automobile power battery drives the motor body to rotate through the direct current bus, the capacitor module, the IGBT module and the three-phase copper bar which are connected in sequence.

Optionally, the controller further comprises a pressure connector, a contactor, a direct current charging wire, and an alternating current charging wire; the alternating-current charging wire and the low-voltage connector are both connected with the first integrated module, and the direct-current charging wire is connected with the three-phase copper bar through the contactor.

Optionally, the controller includes a first integrated module and a second integrated module; the mounting groove comprises a first inner space and a second inner space which are arranged in a rectangular shape and are adjacent to each other; the first integrated module is installed in the first internal space; the second integrated module is mounted within the second interior space.

Optionally, the controller includes a first integrated module and a second integrated module; the first integrated module comprises a first control module and a first heat dissipation module which is arranged at an upper-lower interval with the first control module; the second integrated module comprises a second control module and a second heat dissipation module which is arranged at an upper-lower interval with the second control module; the first heat dissipation module and the second heat dissipation module are both positioned on a first plane; the first control module and the second control module are both positioned on a second plane, and the second plane is positioned at one end of the first plane far away from the support shell;

the integrated housing is concavely formed with a receiving groove for receiving the first heat dissipation module and the second heat dissipation module protruding from the mounting groove.

Optionally, the first integrated module further includes a plurality of first protrusions disposed on an end surface of the first heat dissipation module remote from the first control module; the second integrated module further comprises a plurality of second protrusions arranged on the end face, far away from the second control module, of the second heat dissipation module.

Optionally, the cooling water channel comprises a water channel inlet, a water channel outlet and a water channel cavity communicating the water channel inlet and the water channel outlet; the motor body comprises a motor inner shell arranged in the motor outer shell; a cooling space is formed between the motor outer shell and the motor inner shell; a water inlet communicated with the cooling space is formed in the motor shell; one end of the water channel outlet, which is far away from the water channel cavity, is communicated with the water inlet.

Optionally, a plurality of air guide rib plates circumferentially arranged along the motor output shaft are arranged on the outer wall of the motor inner shell.

Optionally, the speed reducer body comprises a speed reducer input shaft, a speed reducer intermediate shaft, a speed reducer output shaft, a driving gear, an output gear, an intermediate driving gear and an intermediate driven gear; the input shaft of the speed reducer is connected with the output shaft of the motor; the driving gear is arranged on the speed reducer input shaft, the intermediate driving gear and the intermediate driven gear are both arranged on the speed reducer intermediate shaft, and the output gear is arranged on the speed reducer output shaft; the intermediate driving gear is meshed with the driving gear; the intermediate driven gear is meshed with the output gear;

the axis of the intermediate shaft of the speed reducer is higher than the axes of the input shaft of the speed reducer and the output shaft of the speed reducer; and on a plane perpendicular to the axis of the speed reducer input shaft, an included angle between a connecting line between the central point of the speed reducer input shaft and the central point of the speed reducer output shaft and a horizontal plane is smaller than or equal to a preset angle.

In the invention, the integrated housing comprises a support housing for supporting the controller, a motor outer housing for mounting the motor body, and a reducer housing for mounting the reducer body; the support housing is disposed above the motor housing and the speed reducer housing. Therefore, the controller can be directly installed in the supporting shell, a box cover is not required to be additionally arranged for the controller, the structure of the integrated electric drive system is simplified, and the installation is convenient. In addition, the motor body, the speed reducer body and the controller are integrated in the integrated electric driving system, so that the connection of all components through complex wiring harnesses is avoided, the integration level, the compactness and the reliability of the integrated electric driving system are improved, and the mode of the integrated electric driving system and the NVH performance of an automobile are improved.

The embodiment of the invention also provides an electric automobile, which comprises the integrated electric driving system.

Drawings

The invention will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of an assembled structure of an integrated electric drive system according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an exploded structure of an integrated electric drive system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a structure in which a controller of an integrated electric drive system according to an embodiment of the present invention is installed in a mounting slot;

FIG. 4 is a schematic view of a controller of an integrated electric drive system according to an embodiment of the present invention from another view angle;

fig. 5 is a schematic structural diagram of a first heat dissipation portion, a second heat dissipation portion, and an integrated housing of an integrated electric driving system according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of an integrated housing of an integrated electric drive system according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a first heat dissipation portion and a second heat dissipation portion of an integrated electric driving system according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a reducer body of an integrated electric drive system according to an embodiment of the present invention installed in an integrated housing.

Reference numerals in the specification are as follows:

1. a motor body; 11. an inner motor housing; 111. a guide rib plate; 2. a speed reducer body; 21. a reducer input shaft; 22. a reducer intermediate shaft; 23. a speed reducer output shaft; 24. a drive gear; 25. an output gear; 26. an intermediate drive gear; 27. an intermediate driven gear; 3. an integrated housing; 31. a support housing; 311. a cooling water channel; 3111. a waterway inlet; 3112. a waterway outlet; 312. a battery installation space; 313. a receiving groove; 32. a motor outer case; 321. a water outlet; 33. a speed reducer housing; 4. an electric control shell; 41. a mounting groove; 411. a first internal space; 412. a second internal space; 5. a controller; 51. a direct current bus; 52. a first integrated module; 521. a capacitance module; 522. an IGBT module; 523. a first control module; 524. a first heat dissipation module; 5241. a first protrusion; 53. a second integrated module; 531. a second control module; 532. a second heat dissipation module; 5321. a second protrusion; 54. a low voltage connector; 55. a direct current charging wire; 56. an alternating current charging wire; 6. an air conditioner compressor; 7. and (3) a water pump.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

It is to be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

In the present invention, in order to better show the structure of the integrated electric drive system and the connection relation thereof, the present invention is directed "up" that is, actually directed in the direction of the vehicle roof (i.e., above the integrated electric drive system shown in fig. 1); the "down" referred to herein is the direction that actually points toward the vehicle bottom (i.e., below the integrated electric drive system shown in fig. 1).

As shown in fig. 1 and 2, an integrated electric driving system according to an embodiment of the present invention includes a motor body 1, a reducer body 2, an integrated housing 3, and a controller 5 connected to the motor body 1; the motor output shaft of the motor body 1 is connected with the reducer input shaft 21 of the reducer body 2; the integrated housing 3 includes a support housing 31 for supporting the controller 5, a motor outer housing 32 for mounting (by means of screw connection or the like) the motor body 1, and a speed reducer housing 33 for mounting (by means of screw connection or the like) the speed reducer body 2; the support housing 31 is disposed above the motor outer housing 32 and the decelerator housing 33. As will be appreciated, the motor body 1 refers to a motor transmission mounted within the motor housing 32; such as a motor input shaft, a motor output shaft, a coil, etc. The speed reducer body 2 refers to a speed reducer transmission such as a speed reducer input shaft 21, a speed reducer output shaft 23, a speed reducer intermediate shaft 22, various meshing gears, and the like, which are mounted in the speed reducer case 33. The motor output shaft may be directly connected to the speed reducer input shaft 21, or may be indirectly connected to the speed reducer input shaft 21 through a gear.

In the present invention, the integrated housing 3 includes a support housing 31 for supporting the controller 5, a motor outer housing 32 for mounting the motor body 1, and a decelerator housing 33 for mounting the decelerator body 2; the support housing 31 is disposed above the motor outer housing 32 and the decelerator housing 33. Therefore, the controller 5 can be directly arranged on the supporting shell 31, a box cover is not needed to be additionally arranged for the controller 5, the structure of the integrated electric drive system is simplified, and the installation is convenient. In addition, the integrated electric drive system is integrated with the motor body 1, the speed reducer body 2 and the controller 5, so that the connection of all components through complex wiring harnesses is avoided, the integration level, the compactness and the reliability of the integrated electric drive system are improved, and the mode of the integrated electric drive system and the NVH performance of an automobile are improved.

In an embodiment, as shown in fig. 1 and 2, the integrated electric driving system further includes an electric control housing 4, a mounting groove 41 for mounting the controller 5 is provided on the electric control housing 4, and a notch edge of the mounting groove 41 of the electric control housing 4 is connected with an upper end face of the support housing 31; the support housing 31 is provided with a cooling water passage 311 for cooling the controller 5. It will be appreciated that, after the electric control housing 4 is connected to the support housing 31, the notch edge of the mounting groove 41 is closed by the upper end surface of the support housing 31 (preferably, the two are connected in a sealing manner), so that the controller 5 can be protected (without providing a cover for covering the mounting groove 41 to protect the controller). Therefore, the structure of the integrated electric drive system is simplified without additionally arranging a box cover of the electric control shell 4, and the integrated electric drive system is convenient to install. In addition, the support housing 31 is provided with a cooling water channel 311 for cooling the controller 5, and the cooling water channel 311 has a simple structure and is convenient to manufacture, thereby reducing the manufacturing cost of the integrated electric drive system.

In one embodiment, as shown in fig. 2 and 5, the support housing 31 is further provided with a battery mounting space 312 opened toward the mounting groove 41; the integrated electric drive system further includes a battery (not shown) mounted in the battery mounting space 312. It will be appreciated that the battery is a small 12V battery that is commonly used in low power subsystems of automobiles, such as automobile door opening and closing, automobile starting, lights, and the like; further, the battery can be not only a battery pack but also an electric core or a battery module; if the battery is a battery module or a battery cell, a battery pack case is not required for the battery at this time, so that the weight of the integrated electric drive system can be reduced. In addition, the connecting wire between the battery and the controller is positioned in the mounting groove 41, so that the length of the wire harness between the battery and the controller can be shortened, and the integration level of the integrated electric drive system is further improved.

In one embodiment, as shown in fig. 1 and 2, the integrated electric drive system further includes an air conditioning compressor 6 and a water pump 7, both mounted on the decelerator housing 33; the air-conditioning compressor 6 and the water pump 7 are both connected with the controller 5. It will be appreciated that the water pump 7 may be used to provide water to a vehicle wiper. Through the design of the air conditioner compressor 6 and the water pump 7, the integration level of the integrated electric drive system is further improved, and meanwhile, the installation space of the integrated electric drive system on an automobile is reduced.

In one embodiment, as shown in fig. 3, the controller 5 includes a dc bus 51 mounted on the electronic control housing 4, and a first integrated module 52 and a second integrated module 53 both mounted in the mounting groove 41; the first integrated module 52 is connected with an automobile power battery; it can be appreciated that the first integrated module 52 is further connected to the air conditioner compressor 6, and the first integrated module 52 is integrated with an on-board low voltage dc converter, an on-board charge controller, a compressor controller, and the like; and the second integration module 53 integrates a motor controller, a whole vehicle controller, a battery management controller, and the like.

The second integrated module 53 includes a capacitor module 521, an IGBT (Insulated Gate Bipolar Transistor ) module 522, and a three-phase copper bar (not shown); the capacitor module 521 is connected with an automobile power battery through the direct current bus 51; the three-phase copper bars are connected with three-phase terminals (not shown) of the motor body 1; the automobile power battery drives the motor body 1 to rotate through the direct current bus 51, the capacitor module 521, the IGBT module 522 and the three-phase copper bar which are connected in sequence. Specifically, the IGBT module 522 is directly connected to the capacitor module 521 by 6 screws (may be set to other numbers according to the requirement), and the three-phase copper bars are installed in the installation groove 41 by three-phase copper bar brackets. The capacitor module 521 is further integrated with fuses of the first and second integrated modules 52 and 53, thereby improving the safety of the integrated electro-driving system.

Preferably, the second integrated module 53 further includes a hall sensor (not shown), and a driving board (not shown) mounted on the IGBT module 522; as can be appreciated, through holes for the three-phase copper bars to pass through are formed in the hall sensors, and the hall sensors are correspondingly connected with the three-phase copper bars; the control board can detect the current output from the automobile power battery to the motor body 1 through the Hall sensor.

In the invention, the automobile power battery drives the motor body 1 to rotate through the direct current bus 51, the capacitor module 521, the IGBT module 522 and the three-phase copper bar which are sequentially connected, so that the technical effect that the automobile power battery drives the automobile wheels to rotate is realized.

In an embodiment, as shown in fig. 3 and 4, the controller 5 includes a first integrated module 52 and a second integrated module 53; the mounting groove 41 includes a first inner space 411 and a second inner space 412 which are each rectangular and adjacent; the first integrated module 52 is installed in the first interior space 411; the second integrated module 53 is installed in the second internal space 412. It is to be appreciated that the dc bus 51 is located on a side of the second interior space 412 facing away from the first interior space 411. The components of the controller 5 are orderly arranged in the electric control shell 4, so that the integration level of the integrated electric drive system is improved, the connection of complex wiring harnesses among the components of the controller 5 is reduced, and the mode of the controller 5 is improved.

In one embodiment, as shown in fig. 3, the controller 5 further includes a pressure connector 54, a contactor (not shown), a dc charging wire 55, and an ac charging wire 56; the ac charging line 56 and the low-voltage connector 54 are both connected to the first integrated module 52, and the dc charging line 55 is connected to the three-phase copper bar through the contactor. It will be appreciated that the low voltage connector 54 may be provided in a plurality, such as 2, 3, etc., according to design requirements; the low-voltage connector 54 is connected with a temperature sensor, a current sensor and the like of the automobile power battery pack and is used for detecting parameters such as temperature, current and the like of the automobile power battery pack; further, an external direct-current charger sequentially charges the automobile power battery through the direct-current charging wire 55, the contactor and the three-phase copper bar; the external ac charger sequentially performs ac charging on the power battery of the vehicle through the ac charging line 56 and the first integrated module 52. By the design of the controller 5, the applicability and integration degree of the integrated electric drive system are improved.

In an embodiment, as shown in fig. 4 and 5, the controller 5 includes a first integrated module 52 and a second integrated module 53; the first integration module 52 includes a first control module 523 and a first heat dissipation module 524 disposed at an upper-lower interval with the first control module 523; the second integration module 53 includes a second control module 531 and a second heat dissipation module 532 disposed at an upper-lower interval with the second control module 531; the first heat dissipating module 524 and the second heat dissipating module 532 are both located on a first plane; the first control module 523 and the second control module 531 are both located on a second plane, which is located at an end of the first plane away from the support housing 31; as can be appreciated, the first integrated module 52 and the second integrated module 53 are both in an upper-lower double-layer structure, the first control module 523 is integrated with a first control element of the first integrated module 52 (i.e., an element with a smaller heat productivity in the first integrated module 52), and the first heat dissipation module 524 is integrated with a first heat generating component and a first heat dissipation component of the first integrated module 52 (the first heat generating component is an element with a larger heat productivity in the first integrated module 52, and the first heat dissipation component is a device for assisting the heat dissipation of the first heat generating component such as a direct cooling plate); the second control module 531 is integrated with a second control element of the second integrated module 53 (i.e., an element with a smaller heat generation amount in the second integrated module 53), the second heat dissipation module 532 is integrated with a second heat generating component and a second heat dissipation component of the second integrated module 53 (the second heat generating component is an element with a larger heat generation amount in the second integrated module 53), and the second heat dissipation component is a device for assisting the heat dissipation of the second heat generating component, such as a direct cooling plate.

The support housing 31 is concavely formed with a receiving groove 313 for receiving the first and second heat dissipating modules 524 and 532 protruding from the mounting groove 41; the accommodation groove 313 is disposed opposite to the cooling water passage 311. As can be appreciated, the first heat dissipating module 524 and the second heat dissipating module 532 are inserted into the accommodating groove 313, so that the cooling liquid in the cooling water channel 311 can fully absorb the heat dissipated from the first heat dissipating module 524 and the second heat dissipating module 532. In the present invention, by designing the first and second integrated modules 52 and 53 (the first and second heat dissipation modules 524 and 532 are directly inserted into the accommodating groove 313, and the cooling water channel 331 is located below the accommodating groove, so that the heat emitted by the first and second heat dissipation modules 524 and 532 can be fully absorbed), the heat dissipation efficiency of the controller 5 is improved, and the service life of the integrated electric drive system is prolonged.

In an embodiment, as shown in fig. 7, the first integrated module 52 further includes a plurality of first protrusions 5241 disposed on an end surface of the first heat dissipation module 524 away from the first control module 523; the second integrated module 53 further includes a plurality of second protrusions 5321 disposed on an end surface of the second heat dissipation module 532 remote from the second control module 53. As can be appreciated, the design of the first protrusion 5241 increases the contact area between the first heat dissipation module 524 and the cooling water channel 311, and the design of the second protrusion 5321 increases the contact area between the second heat dissipation module 532 and the cooling water channel 311, so that the heat dissipation efficiency of the control is further improved, and the service life of the integrated electric drive system is prolonged.

In one embodiment, as shown in FIG. 6, the cooling waterway 311 includes a waterway inlet 3111, a waterway outlet 3112, and a waterway cavity (not shown) communicating the waterway inlet 3111 and the waterway outlet 3112; the motor body 1 includes a motor inner housing 11 mounted in the motor outer housing 32; a cooling space (not shown) is formed between the motor outer case 32 and the motor inner case 11; the motor casing 32 is provided with a water inlet (not shown) communicating with the cooling space; the channel outlet 3112 communicates with the water inlet at an end remote from the channel cavity. Further, the motor outer casing 32 is further provided with a water outlet 321 which is communicated with the cooling space and the external space; the cooling liquid in the cooling space may flow out from the water outlet 321. It will be appreciated that the waterway cavity is provided in the support shell 31, and that the cooling cavity structure is convenient to manufacture, thereby reducing the cost of manufacturing the integrated electric drive system.

Specifically, after the cooling liquid flows into the waterway cavity from the waterway inlet 3111 and absorbs the heat emitted from the first and second integrated modules 52 and 53, the cooling liquid flows into the cooling space through the waterway outlet 3112 and the water inlet, and the cooling liquid absorbs the heat emitted from the motor body 1 in the cooling space and flows out of the water outlet 321. In the invention, the cooling liquid can cool the first integrated module 52, the second integrated module 53 and the motor body 1, thereby improving the utilization rate of the cooling liquid.

In one embodiment, as shown in fig. 2, a plurality of air guide ribs 111 are provided on the outer wall of the motor inner housing 11 along the circumferential direction of the motor output shaft of the motor. As can be appreciated, the air guide rib 111 may allow the coolant in the cooling space to flow in the circumferential direction of the inner housing, thereby improving the cooling efficiency of the motor.

In one embodiment, as shown in fig. 8, the reducer body 2 includes a reducer input shaft 21, a reducer intermediate shaft 22, a reducer output shaft 23, a driving gear 24, an output gear 25, an intermediate driving gear 26, a driving gear 24, and an intermediate driven gear 27; the speed reducer input shaft 21 is connected with the motor output shaft, the driving gear 24 is mounted on the speed reducer input shaft 21, the intermediate driving gear 26 and the intermediate driven gear 27 are both mounted on the speed reducer intermediate shaft 22, and the output gear 25 is mounted on the speed reducer output shaft 23; the intermediate drive gear 26 meshes with the drive gear 24; the intermediate driven gear 27 is meshed with the output gear 25; as can be appreciated, the motor output shaft of the motor body 1 sequentially passes through the reducer input shaft 21, the driving gear 24, the intermediate driving gear 26, the reducer intermediate shaft 22, the intermediate driven gear 27, the output gear 25 and the reducer output shaft 23, so as to drive the wheels of the automobile to rotate.

The axis of the reducer intermediate shaft 22 is higher than the axes of the reducer input shaft 21 and the reducer output shaft 23; on a plane perpendicular to the axis of the reducer input shaft 21, an angle between a line between the center point of the reducer input shaft 21 and the center point of the reducer output shaft 23 and a horizontal plane is smaller than or equal to a preset angle. The preset angle can be set according to design requirements, for example, the value range of the preset angle is-10 degrees; preferably, the angle between the horizontal plane and the line between the center point of the input shaft 21 and the center point of the output shaft 23 is equal to 0 degrees. As will be appreciated, the reducer intermediate shaft 22 is located above the reducer input shaft 21 and the reducer output shaft 23, and the intermediate drive gear 26 and the intermediate driven gear 27 are each above the drive gear 24 and the output gear 25; through the design of the speed reducer body 2, the gravity center of the integrated electric drive system and the gravity center of the vehicle can be reduced, so that the running stability of the automobile is improved, and the driving fun of the automobile is increased.

The embodiment of the invention also provides an electric automobile, which comprises the integrated electric driving system.

The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (13)

1. An integrated electric drive system is characterized by comprising a motor body, a speed reducer body, an integrated shell and a controller connected with the motor body; the motor output shaft of the motor body is connected with the speed reducer input shaft of the speed reducer body; the integrated housing comprises a support housing for supporting the controller, a motor outer housing for mounting the motor body, and a reducer housing for mounting the reducer body; the support shell is arranged above the motor outer shell and the speed reducer shell;

the controller comprises a first integrated module and a second integrated module; the first integrated module comprises a first control module and a first heat dissipation module which is arranged at an upper-lower interval with the first control module; the second integrated module comprises a second control module and a second heat dissipation module which is arranged at an upper-lower interval with the second control module;

the integrated electric driving system further comprises an electric control shell, wherein a mounting groove for mounting the controller is formed in the electric control shell; the support shell is concavely provided with an accommodating groove for accommodating the first heat dissipation module and the second heat dissipation module which extend out of the mounting groove;

the support shell is provided with a cooling water channel for cooling the controller, and the cooling water channel is positioned below the accommodating groove.

2. The integrated electric drive system of claim 1 wherein a notch edge of the mounting slot of the electric control housing is connected to an upper end face of the support housing.

3. The integrated electric drive system of claim 2 wherein the support housing is further provided with a battery mounting space opening toward the mounting slot; the integrated electric drive system further includes a battery mounted in the battery mounting space.

4. The integrated electrical drive system of claim 2, wherein the cooling water channel includes a water channel inlet, a water channel outlet, and a water channel cavity communicating the water channel inlet and the water channel outlet; the motor body comprises a motor inner shell arranged in the motor outer shell; a cooling space is formed between the motor outer shell and the motor inner shell; a water inlet communicated with the cooling space is formed in the motor shell; one end of the water channel outlet, which is far away from the water channel cavity, is communicated with the water inlet.

5. The integrated electric drive system of claim 4, wherein a plurality of air guide ribs are provided on an outer wall of the motor inner housing circumferentially about the motor output shaft.

6. The integrated electric drive system of claim 1 further comprising an air conditioner compressor and a water pump both mounted on the decelerator housing; the air conditioner compressor and the water pump are both connected with the controller.

7. The integrated electrical drive system of claim 2, wherein the controller includes a dc bus mounted on the electrical control housing and first and second integrated modules each mounted within the mounting slot; the first integrated module is connected with an automobile power battery;

the second integrated module comprises a capacitor module, an IGBT module and a three-phase copper bar; the capacitor module is connected with an automobile power battery through the direct current bus; the three-phase copper bars are connected with three-phase terminals of the motor body; the automobile power battery drives the motor body to rotate through the direct current bus, the capacitor module, the IGBT module and the three-phase copper bar which are connected in sequence.

8. The integrated electrical drive system of claim 7, wherein the controller further comprises a voltage connector, a contactor, a dc charging cord, and an ac charging cord; the alternating-current charging wire and the low-voltage connector are both connected with the first integrated module, and the direct-current charging wire is connected with the three-phase copper bar through the contactor.

9. The integrated electrical drive system of claim 1, wherein the controller comprises a first integrated module and a second integrated module; the mounting groove comprises a first inner space and a second inner space which are arranged in a rectangular shape and are adjacent to each other; the first integrated module is installed in the first internal space; the second integrated module is mounted within the second interior space.

10. The integrated electrical drive system of claim 1, wherein the first heat dissipating module and the second heat dissipating module are both located on a first plane; the first control module and the second control module are both located on a second plane, and the second plane is located at one end, far away from the support shell, of the first plane.

11. The integrated electrical drive system of claim 10, wherein the first integrated module further comprises a plurality of first protrusions disposed on an end face of the first heat dissipation module remote from the first control module; the second integrated module further comprises a plurality of second protrusions arranged on the end face, far away from the second control module, of the second heat dissipation module.

12. The integrated electrical drive system of claim 1, wherein the reducer body comprises a reducer input shaft, a reducer intermediate shaft, a reducer output shaft, a drive gear, an output gear, an intermediate drive gear, and an intermediate driven gear; the speed reducer input shaft is connected with the motor output shaft, the driving gear is arranged on the speed reducer input shaft, the intermediate driving gear and the intermediate driven gear are both arranged on the speed reducer intermediate shaft, and the output gear is arranged on the speed reducer output shaft; the intermediate driving gear is meshed with the driving gear; the intermediate driven gear is meshed with the output gear;

the axis of the intermediate shaft of the speed reducer is higher than the axes of the input shaft of the speed reducer and the output shaft of the speed reducer; and on a plane perpendicular to the axis of the speed reducer input shaft, an included angle between a connecting line between the central point of the speed reducer input shaft and the central point of the speed reducer output shaft and a horizontal plane is smaller than or equal to a preset angle.

13. An electric vehicle comprising an integrated electric drive system according to any one of claims 1 to 12.