CN220429857U

CN220429857U - Cooling system, electric drive assembly shell, electric drive assembly and automobile

Info

Publication number: CN220429857U
Application number: CN202322167561.8U
Authority: CN
Inventors: 许令清; 李佳佳; 邓小梅; 王文光
Original assignee: Suzhou Huichuan United Power System Co Ltd
Current assignee: Suzhou Huichuan United Power System Co Ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-02-02
Anticipated expiration: 2033-08-11

Abstract

The utility model discloses a cooling system, an electric drive assembly shell, an electric drive assembly and an automobile. The electric drive assembly comprises a motor controller and a speed reducer, the speed reducer comprises a bearing seat, and an oil cooler is arranged outside the speed reducer; the cooling system comprises a first cooling pipeline and a second cooling pipeline; the first end of the first cooling pipeline is communicated with the motor controller; the first end of the second cooling pipeline is communicated with the second end of the first cooling pipeline, the second end of the second cooling pipeline is communicated with the oil cooler, and an arc-shaped pipeline encircling the bearing seat is formed between the first end and the second end of the second cooling pipeline. The technical scheme of the utility model can solve the problems of overlong cooling system and overlarge water resistance so as to reduce efficiency loss.

Description

Cooling system, electric drive assembly shell, electric drive assembly and automobile

Technical Field

The utility model relates to the technical field of vehicles, in particular to a cooling system, an electric drive assembly shell, an electric drive assembly and an automobile.

Background

On the electric drive assembly, there are many heat sources, such as an electric control system, a motor system and a speed reducer system, which can be burnt out due to failure caused by high temperature if the heat is not taken away in time. A cooling system is therefore essential for the electric drive assembly. And a path of cooling system is required to be separated from the automobile and led into the electric drive assembly, and is transmitted to the electric control system and the oil cooler through the cooling system so as to take away redundant heat in the electric control system, the motor system and the speed reducer system, so that the temperatures of the electric control system, the motor system and the speed reducer system are maintained within a reasonable range.

In the related art, a straight water channel structure which is in cross communication is usually arranged in a shell, however, a water outlet and an oil cooler in an electric drive assembly are usually arranged at a position far away from a water inlet and a motor controller, a plurality of water channel branches are required to be added, so that a cooling system is overlong, water resistance is overlarge, and efficiency loss is increased.

Disclosure of Invention

The utility model mainly aims to provide a cooling system, which aims to solve the problems of overlong cooling system and overlarge water resistance so as to reduce efficiency loss.

In order to achieve the above object, the present utility model also provides a cooling system applied to an electric drive assembly, the electric drive assembly including a motor controller and a speed reducer, the speed reducer including a bearing seat, an oil cooler being provided outside the speed reducer, the cooling system comprising:

the first end of the first cooling pipeline is communicated with the motor controller;

the first end of the second cooling pipeline is communicated with the second end of the first cooling pipeline, the second end of the second cooling pipeline is communicated with the oil cooler, and an arc-shaped pipeline encircling the bearing seat is formed between the first end and the second end of the second cooling pipeline.

In an embodiment of the utility model, the first cooling circuit further comprises:

the first end of the first pipeline is communicated with the motor controller;

the first end of the second pipeline is communicated with the second end of the first pipeline, the second end of the second pipeline is communicated with the first end of the second cooling pipeline, and the first pipeline and the second pipeline are arranged at an included angle.

In an embodiment of the utility model, the cooling system further comprises:

and the third cooling pipeline is positioned at one end of the second cooling pipeline away from the first cooling pipeline, and the second end of the second cooling pipeline is communicated with the oil cooler through the third cooling pipeline.

In an embodiment of the utility model, the cooling system further comprises:

and the first end of the fourth cooling pipeline is used for being communicated with a water source of the automobile, and the second end of the fourth cooling pipeline is communicated with the motor controller.

The utility model also proposes an electric drive assembly housing comprising:

the shell body is used for being connected with the oil cooler, the bearing seat and the motor controller, and the oil cooler is positioned at one side of the bearing seat far away from the motor controller;

as with the cooling system described above, the cooling system is formed within the housing body.

In one embodiment of the utility model, an arc-shaped groove is formed in the shell body, a water channel cover plate is arranged on the arc-shaped groove in a covering mode, and the arc-shaped groove is matched with the water channel cover plate to form the arc-shaped pipeline.

In one embodiment of the utility model, the waterway cover plate is coupled to the shell body by friction welding.

In one embodiment of the utility model, a water channel plug is blocked at the end of the first pipeline of the first cooling pipeline, which is far away from the motor controller.

In one embodiment of the utility model, the waterway plug is coupled to the shell body by friction welding.

In one embodiment of the utility model, a second end cap of the first cooling pipeline, which is far away from the second cooling pipeline, is provided with a first plug;

and/or a second plug is arranged on the end cover, away from the motor controller, of the fourth cooling pipeline of the cooling system;

and/or the first end of the fourth cooling pipeline of the cooling system is provided with a water nozzle;

and/or the second end of the fourth cooling pipeline of the cooling system and/or the first end of the first cooling pipeline of the cooling system are/is provided with a sealing ring;

and/or the shell body is provided with a mounting cavity, and the mounting cavity is used for accommodating a motor controller.

The utility model also proposes an electric drive assembly comprising:

a motor controller;

the speed reducer comprises a bearing seat, and an oil cooler is arranged outside the speed reducer;

a cooling system as described above, wherein a first end of a first cooling circuit of the cooling system is in communication with the motor controller; the second end of the cooling system is communicated with the oil cooler, wherein an arc-shaped pipeline surrounding the bearing seat is formed between the first end and the second end of the second cooling pipeline.

The utility model also proposes an electric drive assembly comprising:

a motor controller;

the electric drive assembly housing as described above, the first end of the first cooling circuit of the cooling system being in communication with the motor controller; the second end of the cooling system is communicated with the oil cooler, wherein an arc-shaped pipeline surrounding the bearing seat is formed between the first end and the second end of the second cooling pipeline;

the electric drive assembly shell can be only the shell of the speed reducer, or can be an integral shell of the speed reducer and the electric control box of the motor controller, or can be an integral shell of the speed reducer and the rear end cover of the motor.

The utility model also proposes an automobile comprising an electric drive assembly as described above.

The cooling system provided by the utility model comprises a first cooling pipeline and a second cooling pipeline. The first end of the first cooling pipeline is communicated with the motor controller; the first end of the second cooling pipeline is communicated with the second end of the first cooling pipeline, the second end of the second cooling pipeline is communicated with the oil cooler, and an arc pipeline capable of encircling the bearing seat is formed between the first end and the second end of the second cooling pipeline. In this way, after the cooling liquid in the water source of the automobile enters the motor controller, heat generated by the motor controller can be taken away, then the cooling liquid enters the first cooling pipeline from the first end of the first cooling pipeline, flows through the second cooling pipeline, and then enters the oil cooler through the second end of the second cooling pipeline so as to take away the heat in the oil cooler; finally, the water flows back to the water source of the automobile from the liquid outlet of the oil cooler to form a circulating heat dissipation waterway, so that the temperature of the motor controller, the oil cooler and other structures can be maintained within a reasonable range.

The second cooling pipeline is provided with an arc pipeline surrounding the bearing seat between the first end and the second end, so that the second cooling pipeline can quickly reach the liquid inlet of the oil cooler, the distance of the cooling system is greatly shortened, and the problems of overlong cooling system and overlarge water resistance are solved, so that the efficiency loss is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of an electric drive assembly housing according to the present utility model;

FIG. 2 is a cross-sectional view taken at F-F in FIG. 1;

FIG. 3 is a cross-sectional view at G-G of FIG. 1;

FIG. 4 is a schematic view of a portion of an embodiment of an electric drive assembly housing according to the present utility model;

FIG. 5 is a schematic view of a water channel cover plate in an embodiment of an electric drive assembly housing according to the present utility model;

FIG. 6 is a partial cross-sectional view of one embodiment of an electric drive assembly housing of the present utility model;

FIG. 7 is a schematic view of a portion of an embodiment of an electric drive assembly housing according to the present utility model;

FIG. 8 is a schematic view of a portion of an electric drive assembly according to an embodiment of the present utility model.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The present utility model proposes an electric drive assembly housing 100, which aims to solve the problems of overlong cooling system 11 and overlarge water resistance, so as to reduce efficiency loss.

The following will describe the specific structure of the cooling system 11, the electric drive assembly housing 100, the electric drive assembly 1000, and the automobile of the present utility model:

referring to fig. 2 to 4 and 8 in combination, in an embodiment of the cooling system 11 of the present utility model, the cooling system 11 is applied to an electric drive assembly 1000, the electric drive assembly 1000 includes a motor controller 200 and a speed reducer, the speed reducer includes a bearing seat 12, and an oil cooler 2000 is disposed outside the speed reducer; the cooling system 11 comprises a first cooling line 111 and a second cooling line 112; a first end of the first cooling line 111 is connected to the motor controller 200; the first end of the second cooling line 112 is connected to the second end of the first cooling line 111, and the second end of the second cooling line 112 is connected to the oil cooler 2000, wherein an arc line surrounding the bearing housing 12 is formed between the first end and the second end of the second cooling line 112.

It is understood that the cooling system 11 according to the present utility model includes a first cooling line 111 and a second cooling line 112. A first end of the first cooling line 111 is connected to the motor controller 200; the first end of the second cooling line 112 is connected to the second end of the first cooling line 111, and the second end of the second cooling line 112 is connected to the oil cooler 2000, wherein the second cooling line 112 has an arc-shaped line formed between the first and second ends thereof, which can surround the bearing housing 12. Thus, after the coolant in the water source of the automobile enters the motor controller 200, the heat generated by the motor controller 200 can be taken away, and then the coolant enters the first cooling pipeline 111 from the first end of the first cooling pipeline 111, flows through the second cooling pipeline 112, and then enters the oil cooler 2000 through the second end of the second cooling pipeline 112, so as to take away the heat in the oil cooler 2000; finally, the water flows back to the water source of the automobile from the liquid outlet of the oil cooler 2000 to form a circulating heat dissipation waterway, so that the temperature of the motor controller 200, the oil cooler 2000 and other structures can be maintained within a reasonable range.

The second cooling pipeline 112 is formed with an arc pipeline surrounding the bearing seat 12 between the first end and the second end, so that the second cooling pipeline 112 can quickly reach the liquid inlet of the oil cooler 2000, the distance of the cooling system 11 is greatly shortened, and the problems of overlong cooling system 11 and overlarge water resistance are solved, so that the efficiency loss is reduced.

In some embodiments, the cooling system 11 may be formed specifically within the housing body 10 of the electric drive assembly 1000.

The cooling water flowing through the first cooling line 111 and the second cooling line 112 of the cooling system 11 may be tap water or a cooling liquid, and is not particularly limited herein.

In some embodiments, the first cooling line 111 and the second cooling line 112 of the cooling system 11 may be formed by casting, which may reduce the manufacturing process, save costs, and maintain a dense layer on the casting surface to reduce the risk of leakage and improve the yield of the product.

Further, referring to fig. 3 and 8 in combination, in an embodiment of the cooling system 11 of the present utility model, the first cooling pipe 111 further includes a first pipe 1111 and a second pipe 1112; a first end of the first pipe 1111 is connected to the motor controller 200; the first end of the second pipeline 1112 is connected to the second end of the first pipeline 1111, the second end of the second pipeline 1112 is connected to the first end of the second cooling pipeline 112, and the first pipeline 1111 and the second pipeline 1112 form an included angle.

So configured, the cooling water enters the heat dissipation water channel of the motor controller 200, then enters the first pipeline 1111 through the heat dissipation water channel of the motor controller 200 to take away heat generated by the motor controller 200 during operation, and then enters the second pipeline 1112 through the first pipeline 1111 and then enters the second cooling pipeline 112 through the second pipeline 1112. Therefore, by providing the first pipe 1111 and the second pipe 1112 disposed at an angle, the first cooling pipe 111 can more rapidly pass through the inner cavity of the housing body 10, so that the second cooling pipe 112 can be rapidly extended to the vicinity of the oil cooler 2000, and the distance of the cooling system 11 can be further shortened.

Further, referring to fig. 8 in combination, in an embodiment of the cooling system 11 of the present utility model, the cooling system 11 further includes a third cooling pipe 113, the third cooling pipe 113 is located at an end of the second cooling pipe 112 away from the first cooling pipe 111, and a second end of the second cooling pipe 112 is connected to the oil cooler 2000 through the third cooling pipe 113.

So configured, the cooling water exiting the second end of the second cooling line 112 enters the third cooling line 113 to better channel the cooling water through the third cooling line 113 into the oil cooler 2000 to rapidly remove heat from the oil cooler 2000.

Further, referring to fig. 3 and 8 in combination, in an embodiment of the cooling system 11 of the present utility model, the cooling system 11 further includes a fourth cooling pipe 114, a first end of the fourth cooling pipe 114 is used to connect to a water source of the vehicle, and a second end of the fourth cooling pipe 114 is connected to the motor controller 200.

So configured, cooling water in the water supply of the vehicle may be better directed through the fourth cooling line 114 into the heat sink of the motor controller 200 to rapidly remove heat generated by the motor controller 200.

Referring to fig. 1 to 8, the present utility model further provides an electric drive assembly housing 100, where the electric drive assembly housing 100 includes a housing body 10 and the cooling system 11 described above, and the specific structure of the cooling system 11 refers to the foregoing embodiment, and since the electric drive assembly housing 100 adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not described in detail herein.

Wherein, the shell body 10 is used for being connected with the oil cooler 2000, the bearing seat 12 and the motor controller 200, and the oil cooler 2000 is positioned at one side of the bearing seat 12 far away from the motor controller 200; a cooling system 11 is formed within the housing body 10.

It can be appreciated that in the electric drive assembly housing 100 according to the present utility model, by forming the cooling system 11 within the housing body 10, the cooling system 11 includes the first cooling line 111 and the second cooling line 112. A first end of the first cooling line 111 is connected to the motor controller 200; the first end of the second cooling line 112 is connected to the second end of the first cooling line 111, and the second end of the second cooling line 112 is connected to the oil cooler 2000, wherein the second cooling line 112 has an arc-shaped line formed between the first and second ends thereof, which can surround the bearing housing. Thus, after the coolant in the water source of the automobile enters the motor controller 200, the heat generated by the motor controller 200 can be taken away, and then the coolant enters the first cooling pipeline 111 from the first end of the first cooling pipeline 111, flows through the second cooling pipeline 112, and then enters the oil cooler 2000 through the second end of the second cooling pipeline 112, so as to take away the heat in the oil cooler 2000; finally, the water flows back to the water source of the automobile from the liquid outlet of the oil cooler 2000 to form a circulating heat dissipation waterway, so that the temperature of the motor controller 200, the oil cooler 2000 and other structures can be maintained within a reasonable range.

The second cooling pipe 112 is formed with an arc pipe around the bearing seat 12 between the first end and the second end, so that the second cooling pipe 112 can reach the liquid inlet of the oil cooler 2000 quickly, the distance of the second cooling pipe 112 is greatly shortened, and the problems of overlong cooling system 11 and overlarge water resistance are solved, so that the efficiency loss is reduced.

In addition, because cooling system 11 directly forms in the inside of shell body 10, that is, cooling system 11 has directly borrowed the inside space of shell body 10, for the mode that adopts external pipeline, reduced the setting of parts such as joint, rubber tube, water pipe support, clamp, avoided the problem that the overall dimension of electric drive assembly 1000 increases that the setting of each part brought, still avoided the problem that each part and car's interface to take place to interfere, and a plurality of junction leakage condition when difficult appearance adopts external pipeline, cooling system 11 leakage risk is low.

In some embodiments, the housing body 10 is an integrally formed structure. The housing body 10 may be provided therein with a mounting chamber 10a for accommodating the motor controller 200, and may be further provided therein with a first chamber for accommodating the motor, a second chamber for accommodating the decelerator, to mount the motor controller 200 into the mounting chamber 10a, and mount the motor into the first chamber, and mount the decelerator into the second chamber, so that the motor controller 200, the motor, the decelerator, and the cooling system are highly integrated within the housing body 10; in addition, by the partition design of the case body 10, the motor controller 200, the motor, and the speed reducer can be more conveniently mounted on the case body 10.

The bearing seat 12 is integrally formed on the housing body 10, and the bearing seat 12 is used for mounting a bearing for passing through a rotating shaft, for example, an input shaft of a speed reducer.

In some embodiments, the oil cooler 2000 is mounted outside the housing body 10 and connects the inlet of the oil cooler 2000 with a second end of the second cooling line 112 in the cooling system 11.

Further, referring to fig. 5 and 6 in combination, in an embodiment of the electric drive assembly housing 100 of the present utility model, an arc-shaped groove is formed on the housing body 10, a water channel cover 20 is covered on the arc-shaped groove, and the arc-shaped groove and the water channel cover 20 cooperate to form an arc-shaped pipeline.

So set up, adopt water course apron 20 closing cap arc wall to form the arc pipeline, can guarantee the leakproofness of arc pipeline, ensure that the cooling water who flows through the arc pipeline is not revealed.

In the present embodiment, the shape of the waterway cover 20 corresponds to the shape of the arc-shaped groove, that is, the waterway cover 20 is an arc-shaped cover to better cover the arc-shaped groove.

In the practical application process, the water channel cover plate 20 can be specifically connected to the shell body 10 by adopting a welding, bonding, screw connection and other modes.

Further, referring to fig. 6 in combination, in one embodiment of the electric drive assembly housing 100 of the present utility model, the waterway cover 20 is coupled to the housing body 10 by friction welding.

So set up, water course apron 20 adopts friction welding's mode to connect on shell body 10 for sealing connection between water course apron 20 and the shell body 10 is more reliable, and sealing effect is better.

In some embodiments, the waterway cover 20 may be friction welded at the entire outer periphery to make the sealed connection between the waterway cover 20 and the shell body 10 more reliable.

Further, referring to fig. 3 in combination, in an embodiment of the electric drive assembly housing 100 of the present utility model, the end of the first conduit 1111 of the first cooling conduit 111 remote from the motor controller 200 is plugged with a water drain plug 30.

So configured, the water way stopper 30 is used to seal the orifice of the first pipe 1111 to seal the first pipe 1111, thereby ensuring that the cooling water flowing through the first pipe 1111 does not leak.

In the practical application process, the water channel plug 30 may be specifically connected to the shell body 10 by welding, bonding, screw connection, or the like.

Further, referring to fig. 3 in combination, in one embodiment of the electric drive assembly housing 100 of the present utility model, the waterway plug 30 is coupled to the housing body 10 by friction welding.

So set up, water course end cap 30 adopts friction welding's mode to connect on shell body 10 for sealing connection between water course end cap 30 and the shell body 10 is more reliable, and the sealed effect is better.

Further, referring to fig. 1 to 3 in combination, in an embodiment of the electric drive assembly housing 100 of the present utility model, the end cap of the second conduit 1112 of the first cooling conduit 111 remote from the second cooling conduit 112 is provided with a first plug 40.

So configured, the first plug 40 is used to seal the orifice of the second pipe 1112 to ensure that the cooling water flowing through the second pipe 1112 does not leak.

In the practical application process, the first plug 40 may be specifically connected to the shell body 10 by adopting manners of expansion limiting, bonding, screwing, etc. to block the orifice position of the second pipeline 1112, which is not limited herein specifically.

Further, referring to fig. 1 and 3 in combination, in one embodiment of the electric drive assembly housing 100 of the present utility model, the end cap of the fourth cooling circuit 114 of the cooling system 11 remote from the motor controller 200 is provided with a second plug 50;

so configured, the second plug 50 is used to seal the orifice of the fourth cooling circuit 114 to seal the fourth cooling circuit 114, thereby ensuring that the cooling water flowing through the fourth cooling circuit 114 does not leak.

In practical applications, the second plug 50 may be specifically connected to the shell body 10 by means of expansion limiting, bonding, screwing, etc. to block the orifice of the fourth cooling pipe 114, which is not limited herein.

Further, referring to fig. 1 to 3 in combination, in an embodiment of the electric drive assembly housing 100 of the present utility model, a first end of a fourth cooling pipe 114 of the cooling system 11 is provided with a water nozzle 60; in this way, connection to the water supply of the vehicle can be facilitated by the water nozzle 60, so that the cooling water flowing from the water supply of the vehicle can be smoothly introduced into the fourth cooling line 114 through the water nozzle 60.

Further, referring to fig. 7 in combination, in an embodiment of the electric drive assembly housing 100 of the present utility model, the second end of the fourth cooling circuit 114 of the cooling system 11 and/or the first end of the first cooling circuit 111 of the cooling system 11 is provided with a sealing ring 70.

So configured, when the second end of the fourth cooling pipe 114 of the cooling system 11 is provided with the sealing ring 70, the second end of the fourth cooling pipe 114 of the cooling system 11 and the heat dissipation water channel of the motor controller 200 may be sealed by the sealing ring 70, so as to avoid leakage of cooling water from between the second end of the fourth cooling pipe 114 of the cooling system 11 and the heat dissipation water channel of the motor controller 200. Likewise, when the seal ring 70 is provided at the first end of the first cooling pipe 111 of the cooling system 11, the seal ring 70 may seal between the first end of the first cooling pipe 111 of the cooling system 11 and the heat dissipation water channel of the motor controller 200 to prevent leakage of cooling water from between the first end of the first cooling pipe 111 of the cooling system 11 and the heat dissipation water channel of the motor controller 200.

Illustratively, the seal ring 70 may be a waist seal ring 70.

Referring to fig. 8, the present utility model further provides an electric drive assembly 1000, where the electric drive assembly 1000 includes a motor controller 200, a speed reducer, and a cooling system 11 as described above, and the specific structure of the cooling system 11 refers to the foregoing embodiment, and since the electric drive assembly 1000 adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not described in detail herein. The speed reducer comprises a bearing seat 12, and an oil cooler 2000 is arranged outside the speed reducer; a first end of the first cooling line 111 of the cooling system 11 is connected to the motor controller 200; a second end of the cooling system 11 is connected to the oil cooler 2000, wherein a second cooling line 112 forms an arc line around the bearing block 12 between the first and the second end.

In this embodiment, the electric drive assembly 1000 may further include a motor or the like, wherein a first chamber and a second chamber may be provided inside the case body 10 to mount the motor and the decelerator in the first chamber and the second chamber of the case body 10, respectively.

Referring to fig. 8, the present utility model further provides an electric drive assembly 1000, where the electric drive assembly 1000 includes a motor controller 200, a speed reducer, and an electric drive assembly housing 100 as described above, and the specific structure of the electric drive assembly housing 100 refers to the foregoing embodiment, and since the electric drive assembly 1000 adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are not described herein again. The speed reducer comprises a bearing seat 12, and an oil cooler 2000 is arranged outside the speed reducer; a first end of the first cooling line 111 of the cooling system 11 is connected to the motor controller 200; a second end of the cooling system 11 is connected to the oil cooler 2000, wherein a second cooling line 112 forms an arc line around the bearing block 12 between the first and second ends; the electric drive assembly housing 100 may be a housing of only a decelerator, or may be an integral housing of a decelerator and a housing of the motor controller 200, or an integral housing including a housing of a decelerator and a rear end cap of a motor.

The utility model also provides an automobile, which comprises the electric drive assembly 1000, wherein the specific structure of the electric drive assembly 1000 refers to the embodiment, and the automobile at least has all the beneficial effects brought by the technical schemes of the embodiment because the automobile adopts all the technical schemes of the embodiment, and the detailed description is omitted.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A cooling system for an electric drive assembly, the electric drive assembly comprising a motor controller and a speed reducer, the speed reducer comprising a bearing housing, the exterior of the speed reducer being provided with an oil cooler, the cooling system comprising:

2. The cooling system of claim 1, wherein the first cooling circuit further comprises:

the first end of the first pipeline is communicated with the motor controller;

3. The cooling system of claim 1 or 2, wherein the cooling system further comprises:

4. The cooling system of claim 1 or 2, wherein the cooling system further comprises:

5. An electric drive assembly housing, comprising:

the cooling system of any one of claims 1 to 4 formed within the housing body.

6. The electric drive assembly housing of claim 5, wherein an arcuate slot is defined in the housing body, a waterway cover is provided over the arcuate slot, and the arcuate slot cooperates with the waterway cover to form the arcuate channel.

7. The electric drive assembly housing of claim 6, wherein the waterway cover is coupled to the housing body by friction welding.

8. The electric drive assembly housing of claim 5, wherein an end of the first cooling circuit distal from the motor controller is plugged with a water drain plug.

9. The electric drive assembly housing of claim 8, wherein the waterway plug is coupled to the housing body by friction welding.

10. The electric drive assembly housing of any one of claims 5 to 9, wherein the second conduit of the first cooling conduit is provided with a first plug distal to an end cap of the second cooling conduit;

11. An electric drive assembly, comprising:

a motor controller;

the cooling system of any one of claims 1 to 4, a first end of a first cooling circuit of the cooling system in communication with the motor controller; the second end of the cooling system is communicated with the oil cooler, wherein an arc-shaped pipeline surrounding the bearing seat is formed between the first end and the second end of the second cooling pipeline.

12. An electric drive assembly, comprising:

a motor controller;

the electric drive assembly housing of any one of claims 5 to 10, a first end of a first cooling circuit of the cooling system in communication with the motor controller; the second end of the cooling system is communicated with the oil cooler, wherein an arc-shaped pipeline surrounding the bearing seat is formed between the first end and the second end of the second cooling pipeline;

the electric drive assembly shell comprises a shell of the speed reducer, or an integrated shell of the speed reducer and an electric control box body of the motor controller, or an integrated shell of the speed reducer and an end cover of the motor.

13. An automobile comprising an electric drive assembly as claimed in claim 11 or 12.