Motor housing, motor electronic control assembly, electric drive system and vehicle

Abstract

The present application relates to a motor housing, a motor electronic control assembly, an electric drive system, and a vehicle. The motor housing includes a housing body and a heat dissipation portion. The housing body is used to power the motor and is provided with a liquid cooling chamber, a first liquid port, and a second liquid port. The first liquid port and the second liquid port are both connected to the liquid cooling chamber, which is used for coolant to flow through. The heat dissipation portion is connected to the housing body and is provided in the liquid cooling chamber to change the flow direction of the coolant. The present application aims to extend the flow path of the coolant so that the motor housing can dissipate heat from the motor more effectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of motor housings, and in particular to a motor housing, a motor electronic control assembly, an electric drive system, and a vehicle. BACKGROUND

[0002] In related technologies, a motor housing is used to mount a motor, and the motor housing is provided with a liquid cooling cavity. Cooling liquid is arranged in the liquid cooling cavity, and the cooling liquid cools the motor through the motor housing.

[0003] However, in related technologies, the flow path of the cooling liquid is too short, which results in insufficient heat dissipation of the motor housing for the motor. SUMMARY

[0004] The present application provides a motor housing, a motor electronic control assembly, an electric drive system, and a vehicle, which aims to lengthen the flow path of the cooling liquid, so that the motor housing can sufficiently cool the motor.

[0005] To achieve the above-mentioned purpose, according to a first aspect of the present application, a motor housing is provided, comprising:

[0006] a housing body, used to mount a motor, the housing body being provided with a liquid cooling cavity, a first liquid passage, and a second liquid passage, the first liquid passage and the second liquid passage being in communication with the liquid cooling cavity, and the liquid cooling cavity being used for cooling liquid to flow therethrough; and

[0007] a heat dissipation portion, connected to the housing body and arranged in the liquid cooling cavity, so as to change the flow direction of the cooling liquid.

[0008] Optionally, the heat dissipation portion and the housing body define a first liquid cooling flow channel, one end of the first liquid cooling flow channel being in communication with the first liquid passage, and the other end of the first liquid cooling flow channel being in communication with the second liquid passage, and the first liquid cooling flow channel being arranged in a bent manner.

[0009] Optionally, the first liquid cooling flow channel comprises a first flow section and a second flow section, the first flow section extending along the circumferential direction of the housing body, and the second flow section extending along the axial direction of the housing body.

[0010] Optionally, the housing body is annular, so as to surround the motor, in the axial direction of the housing body, the cavity wall of the liquid cooling cavity comprises oppositely arranged first and second cavity walls, the heat dissipation portion comprises first and second flow guide portions, the first flow guide portion is connected to the first cavity wall and is arranged in a spaced manner with the second cavity wall, the second flow guide portion is connected to the second cavity wall and is arranged in a spaced manner with the first cavity wall, and in the circumferential direction of the housing body, the first flow guide portion and the second flow guide portion are arranged in a spaced manner.

[0011] Optionally, the first flow guide portion is arranged opposite to the second flow guide portion in the circumferential direction of the shell body.

[0012] Optionally, the heat dissipation portion further comprises a third flow guide portion arranged between the first cavity wall and the second cavity wall, and the first flow guide portion is connected to the third flow guide portion at one end close to the second cavity wall, and the third flow guide portion at least exceeds one side of the first flow guide portion in the circumferential direction of the shell body.

[0013] Optionally, the heat dissipation portion further comprises a fourth flow guide portion arranged between the first cavity wall and the second cavity wall, and the second flow guide portion is connected to the fourth flow guide portion at one end close to the first cavity wall, and the fourth flow guide portion at least exceeds one side of the second flow guide portion in the circumferential direction of the shell body.

[0014] Optionally, the third flow guide portion is arranged opposite to at least one fourth flow guide portion in the axial direction of the shell body.

[0015] Optionally, the first liquid passage is configured as a first liquid inlet hole, and the heat dissipation portion is arranged in a staggered manner with the first liquid passage in the depth direction of the first liquid passage.

[0016] According to a second aspect of the present application, an electric machine electric control assembly is provided, comprising the aforementioned electric machine shell.

[0017] Optionally, the electric machine electric control assembly comprises a first electric machine end cover, and the first electric machine end cover covers one end of the shell body in the axial direction of the shell body, the first electric machine end cover is provided with a second liquid cooling flow channel, the second liquid cooling flow channel is used for the cooling liquid to flow through, and the second liquid cooling flow channel is in communication with the first liquid passage.

[0018] Optionally, the first electric machine end cover is in contact with the shell body to conduct the second liquid cooling flow channel and the first liquid passage.

[0019] Optionally, the shell body and the first electric machine end cover are inserted in the axial direction of the shell body.

[0020] Optionally, the second liquid cooling flow channel extends in the axial direction of the shell body.

[0021] Optionally, the electric machine electric control assembly further comprises an electric control heat dissipation member, and the electric control heat dissipation member is provided with a third liquid cooling flow channel, the third liquid cooling flow channel is used for the cooling liquid to flow through, and the third liquid cooling flow channel is in communication with the second liquid cooling flow channel.

[0022] Optionally, the first electric machine end cover is in contact with the electric control heat dissipation member to conduct the second liquid cooling flow channel and the third liquid cooling flow channel.

[0023] Optionally, the first motor end cover is provided with a fourth liquid cooling flow channel, and the fourth liquid cooling flow channel is in communication with the third liquid cooling flow channel and the second liquid cooling flow channel.

[0024] Optionally, the first motor end cover is in communication with the third liquid cooling flow channel and the fourth liquid cooling flow channel by contacting the electric control heat dissipation member.

[0025] According to a third aspect of the present application, an electric drive system is further provided, comprising the motor electric control assembly.

[0026] According to a fourth aspect of the present application, a vehicle is further provided, comprising the electric drive system.

[0027] In the motor housing of the embodiments of the present application, the heat dissipation part forces the cooling liquid to change direction, which makes the flow trajectory of the cooling liquid more tortuous, thereby prolonging the flow path of the cooling liquid, and further making the motor housing be able to dissipate heat of the motor more sufficiently.

[0028] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0030] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0031] Figure 1 is an exploded view of the motor electric control assembly part structure provided in the exemplary embodiment of the present disclosure;

[0032] Figure 2 is Figure 1 is a structural schematic view of the motor housing in the embodiment;

[0033] Figure 3 is Figure 1 is a structural schematic view of the motor housing in the embodiment with the shell part hidden;

[0034] Figure 4 is Figure 1 is a structural schematic view of the motor housing in the embodiment with the shell part hidden;

[0035] Figure 5 is Figure 1 is a structural schematic view of the first motor end cover in the embodiment;

[0036] Figure 6 yes Figure 1 A schematic diagram of the structure of the first motor end cover;

[0037] Figure 7 yes Figure 1 Schematic diagram of the structure of the electronic control heat sink;

[0038] Figure 8 yes Figure 1 Schematic diagram of the flow path after the motor and electronic control assembly are assembled;

[0039] Figure 9 is a flow trajectory diagram of the coolant flowing in the motor housing which is not provided with the third guide portion and the fourth guide portion but is provided with the first guide portion and the second guide portion;

[0040] Figure 10 It is a flow trajectory diagram of the coolant flowing in the motor housing provided with the first guide part, the second guide part, the third guide part and the fourth guide part.

[0041] Description of reference numerals:

[0042] 100, motor electronic control assembly; 200, motor housing; 300, housing body; 310, inner housing; 320, outer housing; 330, first cavity wall; 340, second cavity wall; 350, liquid cooling cavity; 360, first liquid cooling channel; 361, first flow section; 362, second flow section; 363, first liquid outlet; 364, second liquid outlet; 370, heat dissipation portion; 371, first guide portion; 372, second guide portion; 373, third guide portion; 374, fourth guide portion; 380, plug-in protrusion; 400, first motor end cover; 410, first Second liquid-cooling channel; 412, third liquid inlet hole; 413, fourth liquid inlet hole; 420, fourth liquid-cooling channel; 421, seventh liquid inlet hole; 422, eighth liquid inlet hole; 430, positioning socket; 500, electronically controlled heat sink; 510, third liquid-cooling channel; 511, fifth liquid inlet hole; 512, sixth liquid inlet hole; 600, second motor end cover; 700, electronically controlled power module; 810, first sealing ring; 820, second sealing ring; 830, third sealing ring; 840, liquid inlet pipe; 850, liquid outlet pipe; 910, flow trajectory; 920, eddy current trajectory. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0044] According to a first aspect of the present application, referring to Figures 1 to 4 The present disclosure provides a motor housing 200. The motor housing 200 comprises a housing body 300 and a heat dissipation part 370. The housing body 300 is configured to accommodate a motor, and the housing body 300 is provided with a liquid cooling cavity 350, a first liquid passage 363 and a second liquid passage 364. The first liquid passage 363 and the second liquid passage 364 are both in communication with the liquid cooling cavity 350, and the liquid cooling cavity 350 is configured to allow cooling liquid to flow therethrough. The heat dissipation part 370 is connected to the housing body 300 and is arranged in the liquid cooling cavity 350 to change the flow direction of the cooling liquid.

[0045] In this way, the heat dissipation part 370 forces the cooling liquid to detour or turn, which makes the flow trajectory of the cooling liquid more tortuous, thereby prolonging the flow path of the cooling liquid, and further enabling the motor housing 200 to dissipate heat from the motor more sufficiently.

[0046] Referring to Figure 8 In some embodiments, the heat dissipation part 370 and the housing body 300 define a first liquid cooling flow channel 360. One end of the first liquid cooling flow channel 360 is in communication with the first liquid passage 363, and the other end of the first liquid cooling flow channel 360 is in communication with the second liquid passage 364. The first liquid cooling flow channel 360 is arranged in a bent manner.

[0047] The bent first liquid cooling flow channel 360 makes the flow path of the cooling liquid longer when flowing through the liquid cooling cavity 350. Compared with a linear flow channel, the cooling liquid needs to pass through more paths in the bent first liquid cooling flow channel 360 to flow from the first liquid passage 363 to the second liquid passage 364. When flowing through a longer path, the cooling liquid has more time to contact the heat dissipation part 370 and the housing body 300, thereby increasing the heat exchange time and improving the heat exchange efficiency. In addition, the two ends of the first liquid cooling flow channel 360 are connected to the first liquid passage 363 and the second liquid passage 364, respectively, which enables the cooling liquid to flow more concentratedly in the liquid cooling cavity 350.

[0048] The first liquid cooling flow channel 360 can have various structural forms. In some embodiments, the first liquid cooling flow channel 360 comprises a first flow section 361 and a second flow section 362. The first flow section 361 extends along the circumferential direction of the housing body 300, and the second flow section 362 extends along the axial direction of the housing body 300. However, the present design is not limited thereto. In some other embodiments, the first liquid cooling flow channel 360 comprises a plurality of arc-shaped flow sections.

[0049] In some embodiments, the shell body 300 is annular for surrounding the motor, the cavity wall of the liquid cooling cavity 350 includes oppositely arranged first and second cavity walls 330, 340 in the axial direction of the shell body 300, the heat dissipation portion 370 includes first and second flow guiding portions 371, 372, the first flow guiding portion 371 is connected to the first cavity wall 330 and is spaced apart from the second cavity wall 340, the second flow guiding portion 372 is connected to the second cavity wall 340 and is spaced apart from the first cavity wall 330, the first flow guiding portion 371 is spaced apart from the second flow guiding portion 372 in the circumferential direction of the shell body 300, and the first and second flow guiding portions 371, 372 are both used to guide the cooling liquid to flow in the axial direction of the shell body 300.

[0050] In this way, the flow path of the cooling liquid in the first liquid cooling flow channel 360 is lengthened, so that the cooling liquid has more time to contact the heat dissipation portion 370 and the shell body 300, thereby increasing the heat exchange time and improving the heat exchange efficiency.

[0051] It is worth mentioning that the circumferential direction of the shell body 300 is indicated by the direction A in FIG. 1, and the axial direction of the shell body 300 is indicated by the direction B in FIG. 1. Figure 3 Figure 4

[0052] In some embodiments, the first flow guiding portion 371 is oppositely arranged with the second flow guiding portion 372 in the circumferential direction of the shell body 300.

[0053] In this way, the flow path of the cooling liquid in the liquid cooling cavity 350 is lengthened. The cooling liquid has more time to contact the heat dissipation portion 370 and the shell body 300 when flowing through a longer path, thereby increasing the heat exchange time and improving the heat exchange efficiency. It can be understood that the projection of the first flow guiding portion 371 intersects with the projection of the second flow guiding portion 372 in the circumferential direction of the shell body 300.

[0054] In some embodiments, the heat dissipation portion 370 further includes a third flow guiding portion 373 arranged between the first and second cavity walls 330, 340, the third flow guiding portion 373 is used to guide the cooling liquid to flow in the circumferential direction of the shell body 300, one end of the first flow guiding portion 371 close to the second cavity wall 340 is connected to the third flow guiding portion 373, and the third flow guiding portion 373 at least exceeds one side of the first flow guiding portion 371 in the circumferential direction of the shell body 300.

[0055] In this way, the flow path of the cooling liquid in the liquid cooling cavity 350 is lengthened. The cooling liquid has more time to contact the heat dissipation portion 370 and the shell body 300 when flowing through a longer path, thereby increasing the heat exchange time and improving the heat exchange efficiency.

[0056] ​​In one example, a plurality of third guide portions 373 are provided. In the circumferential direction of the shell body 300 , some third guide portions 373 extend beyond one side of the first guide portion 371 , and another portion of the third guide portions 373 extend beyond both sides of the first guide portion 371 .

[0057] In some embodiments, the heat dissipation portion 370 also includes a fourth guide portion 374 arranged between the first cavity wall 330 and the second cavity wall 340. The fourth guide portion 374 is used to guide the cooling liquid to flow along the circumference of the shell body 300. The second guide portion 372 is connected to the fourth guide portion 374 at one end close to the first cavity wall 330. In the circumferential direction of the shell body 300, the fourth guide portion 374 at least exceeds one side of the second guide portion 372.

[0058] This helps to lengthen the cooling liquid flow path through the liquid cooling chamber 350. The cooling liquid has more time to contact the heat dissipation portion 370 and the shell body 300 when flowing through the longer path, thereby increasing the heat exchange time and improving the heat exchange efficiency.

[0059] In one example, a plurality of fourth air guide portions 374 are provided. In the circumferential direction of the shell body 300 , some of the fourth air guide portions 374 extend beyond one side of the second air guide portion 372 , and another portion of the fourth air guide portions 374 extend beyond both sides of the second air guide portion 372 .

[0060] In some embodiments, the third guide portion 373 is disposed opposite to at least one fourth guide portion 374 in the axial direction of the housing body 300. It is understood that the projection of the third guide portion 373 intersects at least one fourth guide portion 374 in the axial direction of the housing body 300.

[0061] This helps to suppress the formation of vortexes in the cooling liquid in the liquid cooling chamber 350 , that is, to reduce the occurrence of a situation where part of the cooling liquid circulates in the liquid cooling chamber 350 , which helps to improve the heat dissipation efficiency of the motor housing 200 to the motor.

[0062] like Figure 9 and Figure 10 As shown, Figure 9 FIG. 910 shows a flow trajectory of the coolant in the motor housing 200 that is not provided with the third guide portion 373 and the fourth guide portion 374 but is provided with the first guide portion 371 and the second guide portion 372 . Figure 10 FIG910 is a flow trajectory of the coolant flowing in the motor housing 200 provided with the first guide portion 371, the second guide portion 372, the third guide portion 373 and the fourth guide portion 374. Figure 10The flow trajectory 910 in the first through hole 363 has almost no vortex trajectory 920. It can be understood that, in the axial direction of the shell body 300, the third flow guide part 373 is arranged opposite to at least a fourth flow guide part 374, which is conducive to inhibiting the formation of vortex of the cooling liquid in the liquid cooling cavity 350, that is, reducing the situation that part of the cooling liquid circulates in the liquid cooling cavity 350, and is conducive to improving the heat dissipation efficiency of the motor shell 200 on the motor.

[0063] In some embodiments, the first through liquid port 363 is configured as a first liquid inlet hole, and the heat dissipation part 370 is arranged in a staggered manner with the first through liquid port 363 in the depth direction of the first through liquid port 363.

[0064] In this way, after the cooling liquid enters from the first through liquid port 363, the cooling liquid will not be blocked by the heat dissipation part 370 in the depth direction of the first through liquid port 363, which is conducive to maintaining a high flow rate of the cooling liquid. In this way, a driving member with smaller power can be used to drive the cooling liquid to flow.

[0065] In an example, the depth direction of the first through hole is consistent with the axial direction of the shell body 300.

[0066] In an example, the shell body 300 comprises an inner shell portion 310, an outer shell portion 320, a first cavity wall 330 and a second cavity wall 340. The inner shell portion 310, the outer shell portion 320, the first cavity wall 330 and the second cavity wall 340 collectively enclose a liquid cooling cavity 350. The inner shell portion 310 and the outer shell portion 320 are annular, the inner shell portion 310 is configured to surround the motor, and the outer shell portion 320 is configured to surround the inner shell portion 310. The first flow guide portion 371, the second flow guide portion 372, the third flow guide portion 373 and the fourth flow guide portion 374 are all arranged in the liquid cooling cavity 350. The first flow guide portion 371 connects the first cavity wall 330, the inner shell portion 310 and the outer shell portion 320, the second flow guide portion 372 connects the second cavity wall 340, the inner shell portion 310 and the outer shell portion 320, the third flow guide portion 373 connects the first flow guide portion 371, the inner shell portion 310 and the outer shell portion 320, and the fourth flow guide portion 374 connects the second flow guide portion 372, the inner shell portion 310 and the outer shell portion 320. The first flow guide portion 371 and the second flow guide portion 372 extend in the axial direction of the shell body 300, and the third flow guide portion 373 and the fourth flow guide portion 374 extend in the circumferential direction of the shell body 300. The first flow guide portion 371, the second flow guide portion 372, the third flow guide portion 373 and the fourth flow guide portion 374 are all provided in plurality, one third flow guide portion 373 is arranged corresponding to one first flow guide portion 371, and one fourth flow guide portion 374 is arranged corresponding to one second flow guide portion 372. In the circumferential direction of the shell body 300, the first flow guide portion 371 and the second flow guide portion 372 are arranged alternately, and in the circumferential direction of the shell body 300, the first flow guide portion 371 and the second flow guide portion 372 are arranged oppositely. It can be understood that in the circumferential direction of the shell body 300, the projection of the first flow guide portion 371 and the projection of the second flow guide portion 372 at least partially intersect. In the axial direction of the shell body 300, the third flow guide portion 373 is arranged oppositely to at least one fourth flow guide portion 374. It can be understood that in the axial direction of the shell body 300, the projection of the third flow guide portion 373 and the projection of at least one fourth flow guide portion 374 at least partially intersect. The first liquid passage 363 is arranged in the first cavity wall 330, and the second liquid passage 364 is arranged in the outer shell portion 320. The first liquid passage 363 is configured as a first liquid inlet, and the second liquid passage 364 is configured as a first liquid outlet.

[0067] The connection between the first flow guide portion 371 and the first cavity wall 330 is provided with a rounded corner, and the connection between the second flow guide portion 372 and the second cavity wall 340 is provided with a rounded corner. In this way, it is beneficial to reduce the flow resistance of the cooling liquid flowing in the first liquid cooling flow channel 360.

[0068] The connection between the third flow guide portion 373 and the first flow guide portion 371 is provided with a rounded corner. In this way, it is beneficial to reduce the flow resistance of the cooling liquid flowing in the first liquid cooling flow channel 360.

[0069] The connection between the fourth flow guide portion 374 and the second flow guide portion 372 is provided with a rounded corner. In this way, it is beneficial to reduce the flow resistance of the cooling liquid flowing in the first liquid cooling flow channel 360.

[0070] The opposite ends of the third flow guide portion 373 are provided with rounded corners in the circumferential direction of the shell body 300. In this way, the flow resistance of the cooling liquid flowing in the first liquid cooling passage 360 is reduced.

[0071] The opposite ends of the fourth flow guide portion 374 are provided with rounded corners in the circumferential direction of the shell body 300. In this way, the flow resistance of the cooling liquid flowing in the first liquid cooling passage 360 is reduced.

[0072] In the axial direction of the shell body 300, the distance between the third flow guide portion 373 and the fourth flow guide portion 374 ranges from 50 mm to 60 mm. In the axial direction of the shell body 300, the distance between the third flow guide portion 373 and the fourth flow guide portion 374 can but is not limited to be 50 mm, 51 mm, 52 mm, 53 mm, 54 mm, 55 mm, 56 mm, 57 mm, 58 mm, 59 mm, or 60 mm. In the axial direction of the shell body 300, the distance between the third flow guide portion 373 and the second cavity wall 340 ranges from 30 mm to 40 mm. In the axial direction of the shell body 300, the distance between the third flow guide portion 373 and the second cavity wall 340 can but is not limited to be 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, or 40 mm. In the axial direction of the shell body 300, the distance between the fourth flow guide portion 374 and the first cavity wall 330 ranges from 30 mm to 40 mm. In the axial direction of the shell body 300, the distance between the fourth flow guide portion 374 and the first cavity wall 330 can but is not limited to be 30 mm, 31 mm, 32 mm, 33 mm, 34 mm, 35 mm, 36 mm, 37 mm, 38 mm, 39 mm, or 40 mm. In the circumferential direction of the shell body 300, the distance between the first flow guide portion 371 and the second flow guide portion 372 ranges from 60 mm to 70 mm. In the circumferential direction of the shell body 300, the distance between the first flow guide portion 371 and the second flow guide portion 372 can but is not limited to be 60 mm, 61 mm, 62 mm, 63 mm, 64 mm, 65 mm, 66 mm, 67 mm, 68 mm, 69 mm, or 70 mm. In the circumferential direction of the shell body 300, the distance between the third flow guide portion 373 and the second flow guide portion 372 ranges from 20 mm to 30 mm. In the circumferential direction of the shell body 300, the distance between the third flow guide portion 373 and the second flow guide portion 372 can but is not limited to be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, or 30 mm. In the circumferential direction of the shell body 300, the distance between the fourth flow guide portion 374 and the first flow guide portion 371 ranges from 20 mm to 30 mm. In the circumferential direction of the shell body 300, the distance between the fourth flow guide portion 374 and the first flow guide portion 371 can but is not limited to be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, or 30 mm.

[0073]

[0074] The table is the motor temperature and the flow resistance data of the first liquid cooling flow channel 360 of different motor shell 200 structures.

[0075] It can be understood that the stator core and the winding in the table are the stator and the winding of the motor. It can be seen that, compared with scheme one, the highest temperature of the stator core in scheme two is reduced by 0.6°C, the highest temperature of the winding is reduced by 0.7°C, the average temperature of the stator core is reduced by 0.6°C, and the average temperature of the winding is reduced by 0.8°C. In addition, it is worth mentioning that the highest temperature of the cooling liquid located in the motor housing 200 in scheme one is 67.6°C, and the highest temperature of the cooling liquid located in the motor housing 200 in scheme two is 68.1°C, it can be understood that the cooling liquid located in the motor housing 200 in scheme two carries away more heat. In addition, although the flow resistance of scheme two is increased by 1.1 kPa compared with scheme one, the flow state of the cooling liquid in scheme two is significantly improved, and scheme two can inhibit eddy current compared with scheme one.

[0076] According to a second aspect of the present disclosure, an electric machine electric control assembly 100 is provided, the electric machine electric control assembly 100 comprising the above-mentioned electric machine housing 200, the electric machine electric control assembly 100 having all the beneficial effects of the above-mentioned electric machine housing 200, which will not be repeated here.

[0077] Referring to Figure 5 and Figure 6 In some embodiments, the electric machine electric control assembly 100 comprises a first motor end cover 400, the first motor end cover 400 being coupled to one end of the shell body 300 in the axial direction of the shell body 300, and the first motor end cover 400 being provided with a second liquid cooling flow channel 410 for the cooling liquid to flow through.

[0078] In this way, the cooling liquid can dissipate heat from the motor through the first motor end cover 400. In an example, the first motor end cover 400 is configured as a rear end cover of the motor.

[0079] In addition, the second liquid cooling flow channel 410 is in communication with the first liquid passage 363.

[0080] In this way, the first liquid cooling flow channel 360 for dissipating heat from the motor and the second liquid cooling flow channel 410 for dissipating heat from the motor controller are in communication, improving the flow smoothness of the cooling liquid and reducing the flow resistance.

[0081] In some embodiments, the electric machine electric control assembly 100 further comprises a second motor end cover 600, the second motor end cover 600 being coupled to the other end of the shell body 300 in the axial direction of the shell body 300. In an example, the second motor end cover 600 is configured as a front end cover of the motor.

[0082] In some embodiments, the first motor end cover 400 is in contact with the shell body 300 to conduct the second liquid cooling flow channel 410 and the first liquid passage 363.

[0083] Therefore, the adapter pipe connecting the first liquid cooling flow channel 360 and the second liquid cooling flow channel 410 is saved, which reduces the manufacturing cost of the motor electric control assembly 100 and improves the integration of the motor electric control assembly 100.

[0084] In some embodiments, the shell body 300 and the first motor end cover 400 are inserted in the axial direction of the shell body 300.

[0085] Therefore, the assembly precision of the shell body 300 and the first motor end cover 400 is improved, and the sealing between the second liquid cooling flow channel 410 and the first liquid outlet 363 is improved.

[0086] In an example, the first motor end cover 400 is provided with a positioning hole 430, and the shell body 300 is provided with an insertion protrusion 380 which is inserted into the positioning hole 430.

[0087] In some embodiments, the second liquid cooling flow channel 410 extends in the axial direction of the shell body 300. Therefore, the flow direction of the cooling liquid is consistent during the flow of the cooling liquid in the second liquid cooling flow channel 410, and the flow resistance of the cooling liquid in the second liquid cooling flow channel 410 is small.

[0088] Referring to Figure 7 In some embodiments, the motor electric control assembly 100 further comprises an electric control heat dissipation member 500 provided with a third liquid cooling flow channel 510 for the cooling liquid to flow through.

[0089] Therefore, the electric control heat dissipation member 500 can dissipate heat from the motor controller.

[0090] In addition, the third liquid cooling flow channel 510 is in communication with the second liquid cooling flow channel 410.

[0091] Therefore, the temperature of the first motor end cover 400 and the electric control heat dissipation member 500 is uniform, and the temperature of the motor controller and the motor is uniform.

[0092] In some embodiments, the first motor end cover 400 is in contact with the electric control heat dissipation member 500 to conduct the second liquid cooling flow channel 410 and the third liquid cooling flow channel 510.

[0093] Therefore, the adapter pipe connecting the second liquid cooling flow channel 410 and the third liquid cooling flow channel 510 is saved, which reduces the manufacturing cost of the motor electric control assembly 100 and improves the integration of the motor electric control assembly 100, and the structure of the motor electric control assembly 100 is relatively simple.

[0094] In some embodiments, the first motor end cover 400 is provided with a fourth liquid cooling channel 420, and the fourth liquid cooling channel 420 is communicated with the second liquid cooling channel 410 through the third liquid cooling channel 510. In this way, the electric control heat dissipation member 500 is used to realize the in-out of the cooling liquid through the first motor end cover 400.

[0095] In some embodiments, the first motor end cover 400 is communicated with the third liquid cooling channel 510 and the fourth liquid cooling channel 420 by being in contact with the electric control heat dissipation member 500.

[0096] In this way, the adapter pipe connecting the third liquid cooling channel 510 and the fourth liquid cooling channel 420 is saved, which reduces the cost of manufacturing the motor electric control assembly 100, and improves the integration of the motor electric control assembly 100, so that the structure of the motor electric control assembly 100 is relatively simple.

[0097] In some embodiments, the motor electric control assembly 100 further comprises a first sealing ring 810, the shell main body 300 is provided with a first contact surface, the first liquid passing opening 363 is arranged on the first contact surface, the first motor end cover 400 is provided with a second contact surface, the second liquid cooling channel 410 is provided with a third liquid passing opening, the third liquid passing opening is arranged on the second contact surface, the first contact surface and the second contact surface are connected, the first sealing ring 810 is arranged on the first contact surface and the second contact surface, and the first sealing ring 810 is used to seal the first contact surface and the second contact surface, so as to reduce the leakage of the cooling liquid.

[0098] In some embodiments, the motor electric control assembly 100 further comprises a second sealing ring 820, the first motor end cover 400 is provided with a third contact surface, the second liquid cooling channel 410 is provided with a fourth liquid passing opening, the fourth liquid passing opening is arranged on the third contact surface, the electric control heat dissipation member 500 is provided with a fourth contact surface, the third liquid cooling channel 510 is provided with a fifth liquid passing opening, the fifth liquid passing opening is arranged on the fourth contact surface, the third contact surface and the fourth contact surface are connected, the second sealing ring 820 is arranged on the third contact surface and the fourth contact surface, and the second sealing ring 820 is used to seal the third contact surface and the fourth contact surface, so as to reduce the leakage of the cooling liquid.

[0099] In some embodiments, the motor electric control assembly 100 further comprises a third sealing ring 830, the electric control heat dissipation member 500 is provided with a fifth contact surface, the third liquid cooling channel 510 is provided with a sixth liquid passing opening, the sixth liquid passing opening is arranged on the fifth contact surface, the first motor end cover 400 is provided with a sixth contact surface, the fourth liquid cooling channel 420 is provided with a seventh liquid passing opening, the seventh liquid passing opening is arranged on the sixth contact surface, the fifth contact surface and the sixth contact surface are connected, the third sealing ring 830 is arranged on the fifth contact surface and the sixth contact surface, and the third sealing ring 830 is used to seal the fifth contact surface and the sixth contact surface, so as to reduce the leakage of the cooling liquid.

[0100] In some embodiments, the motor electric control assembly 100 further comprises an electric control power module 700, the first motor end cover 400 covers the electric control heat dissipation member 500 on the electric control power module 700, one end of the fourth liquid cooling channel 420 is in communication with the third liquid cooling channel 510, and the other end is arranged outside the first motor end cover 400.

[0101] In some embodiments, in the axial direction of the shell body 300, the second motor end cover 600, the shell body 300, the first motor end cover 400, the electric control heat dissipation member 500, and the motor power module are sequentially arranged.

[0102] In addition, the motor electric control assembly 100 further comprises an inlet pipe 840 and an outlet pipe 850. The inlet pipe 840 is arranged at the second liquid passage 364, the fourth liquid cooling channel 420 has an eighth liquid passage, and the outlet pipe 850 is arranged at the eighth liquid passage.

[0103] According to a third aspect of the present disclosure, an electric drive system is provided, which comprises the above-mentioned motor electric control assembly 100, and has all the beneficial effects of the above-mentioned motor electric control assembly 100, which will not be repeated here.

[0104] According to a fourth aspect of the present disclosure, a vehicle is provided, which comprises the above-mentioned electric drive system, and has all the beneficial effects of the above-mentioned electric drive system, which will not be repeated here.

[0105] The vehicle can be a fuel automobile, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., which is not specifically limited by the present disclosure.

[0106] In the description of the present application, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0107] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0108] The embodiments, implementation manners and related technical features of the present application can be combined, replaced or modified without conflict.

[0109] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present application, without departing from the technical solution of the present application, still falls within the scope of the technical solution of the present application.

Claims

1. A motor housing, characterized in that: include: A shell body is used to install the electric motor, and a liquid cooling cavity, a first liquid port, and a second liquid port are provided in the shell body. The first liquid port and the second liquid port are both connected to the liquid cooling cavity, and the liquid cooling cavity is used for cooling liquid to flow through. as well as a heat dissipation portion connected to the shell body and disposed in the liquid cooling chamber to change the flow direction of the cooling liquid; In the axial direction of the shell body, the cavity wall of the liquid cooling cavity includes a first cavity wall and a second cavity wall arranged opposite to each other, and the heat dissipation portion includes a first flow guide portion and a second flow guide portion, the first flow guide portion is connected to the first cavity wall and is spaced apart from the second cavity wall, the second flow guide portion is connected to the second cavity wall and is spaced apart from the first cavity wall, and in the circumferential direction of the shell body, the first flow guide portion and the second flow guide portion are spaced apart; The heat dissipation portion further includes a third guide portion provided between the first cavity wall and the second cavity wall, the third guide portion being configured to guide the coolant to flow along the circumferential direction of the shell body, the first guide portion being connected to the third guide portion at one end close to the second cavity wall, and the third guide portion extending beyond at least one side of the first guide portion in the circumferential direction of the shell body; The heat dissipation portion further includes a fourth guide portion provided between the first cavity wall and the second cavity wall, the fourth guide portion being configured to guide the coolant to flow along the circumferential direction of the shell body, the second guide portion being connected to the fourth guide portion at one end adjacent to the first cavity wall, and the fourth guide portion extending beyond at least one side of the second guide portion in the circumferential direction of the shell body; In the axial direction of the shell body, the third guide portion is arranged face to face with at least one of the fourth guide portions.

2. The motor housing according to claim 1, characterized in that The heat dissipation portion and the shell body define a first liquid cooling channel, one end of the first liquid cooling channel is connected to the first liquid port, the other end of the first liquid cooling channel is connected to the second liquid port, and the first liquid cooling channel is bent.

3. The motor housing according to claim 2, characterized in that The shell body is annular for surrounding the motor. The first liquid-cooling channel includes a first flow segment and a second flow segment. The first flow segment extends along the circumferential direction of the shell body, and the second flow segment extends along the axial direction of the shell body.

4. The motor housing according to claim 1, wherein The first air guide portion and the second air guide portion are arranged opposite to each other in a circumferential direction of the shell body.

5. The motor housing according to claim 1, wherein: The first liquid passage is configured as a first liquid inlet hole. In the depth direction of the first liquid passage, the heat dissipation portion and the first liquid passage are staggered.

6. A motor and electronic control assembly, characterized in that: The motor housing comprises the motor housing according to any one of claims 1 to 5.

7. The motor and electronic control assembly according to claim 6, characterized in that: The motor electronic control assembly includes a first motor end cover. In the axial direction of the shell body, the first motor end cover is covered on one end of the shell body. The first motor end cover is provided with a second liquid cooling channel. The second liquid cooling channel is used for the coolant to flow through. The second liquid cooling channel is connected to the first liquid port.

8. The motor and electronic control assembly according to claim 7, characterized in that: The first motor end cover is in contact with the shell body to connect the second liquid cooling channel and the first liquid outlet.

9. The motor and electronic control assembly according to claim 8, characterized in that: In the axial direction of the shell body, the shell body and the first motor end cover are plugged into each other.

10. The motor and electronic control assembly according to claim 7, characterized in that: The second liquid-cooling channel extends along the axial direction of the shell body.

11. The motor and electronic control assembly according to claim 7, characterized in that: The motor electronic control assembly further includes an electronically controlled heat sink, which is provided with a third liquid cooling channel for the coolant to flow through, and the third liquid cooling channel is connected to the second liquid cooling channel.

12. The motor and electronic control assembly according to claim 11, characterized in that: The first motor end cover is in contact with the electronically controlled heat sink to connect the second liquid cooling channel and the third liquid cooling channel.

13. The motor and electronic control assembly according to claim 11, characterized in that: The first motor end cover is provided with a fourth liquid cooling channel, and the fourth liquid cooling channel is connected to the second liquid cooling channel through the third liquid cooling channel.

14. The motor and electronic control assembly according to claim 13, characterized in that: The first motor end cover is in contact with the electrically controlled heat sink to connect the third liquid cooling channel and the fourth liquid cooling channel.

15. An electric drive system, characterized in that: It comprises the motor and electronic control assembly as claimed in any one of claims 10 to 14.

16. A vehicle, characterized in that: Comprising the electric drive system as claimed in claim 15.

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