Electric drive system and vehicle

Abstract

The utility model provides an electric drive system and a vehicle, and relates to the technical field of electric drive. The electric drive system comprises a shell assembly, a motor assembly and a controller assembly, the shell assembly is provided with a first containing cavity and a second containing cavity, the motor assembly is arranged in the first containing cavity, the controller assembly is arranged in the second containing cavity, the controller assembly comprises a power module and an electric connecting piece, and the electric connecting piece is connected with the power module; a cavity wall between the first accommodating cavity and the second accommodating cavity is provided with a first through hole, and the power module is connected to one side, deviating from the first accommodating cavity, in the second accommodating cavity; the electric connecting piece extends towards the first containing cavity, and the electric connecting piece penetrates through the first through hole and is connected with the motor assembly, so that an installation opening does not need to be formed in the side of the shell, the assembly process of electric connection is simplified, and meanwhile the sealing performance of the space where the electric assembly is located is improved.

Description

Technical Field

[0001] The present application relates to the field of electric drive technology, and in particular to an electric drive system and a vehicle. Background Art

[0002] With the rapid popularization of new energy vehicles, electric drive systems are rapidly developing towards high power density, low cost, high integration, and high efficiency. Under this trend, high power density requires high power and compact size of the motor.

[0003] In related technologies, the electric drive system of a new energy vehicle generally integrates a motor and a reducer. The motor's output shaft cooperates with the reducer, reducing the rotation of the motor's output shaft and outputting power through the reducer. The motor and reducer are both mounted in the electric drive system's housing, while the electric drive system's controller is separately installed in the controller housing. The controller housing needs to be sealed to ensure that the controller meets the required protection level. The controller housing and the electric drive system housing are then assembled and connected. A mounting window is reserved in the housing for installing the electrical connection components between the controller and the motor.

[0004] However, when assembling the controller in the current electric drive system, the installation process of the electrical connection components between the controller and the motor is complicated and the sealing effect is poor. Utility Model Content

[0005] The present application provides an electric drive system and a vehicle to solve the technical problems in the current electric drive system in which, during assembly of the controller, the electrical connection components between the controller and the motor are complex to install and have poor sealing effects.

[0006] In a first aspect, the present application provides an electric drive system, which includes a housing assembly, a motor assembly, and a controller assembly. The housing assembly has a first accommodating cavity and a second accommodating cavity. The motor assembly is disposed in the first accommodating cavity, and the controller assembly is disposed in the second accommodating cavity.

[0007] In which, the controller component includes a power module and an electrical connector, which is connected to the power module; a first through hole is provided in the cavity wall between the first accommodating cavity and the second accommodating cavity, and the power module is connected to the side of the second accommodating cavity away from the first accommodating cavity; the electrical connector extends toward the first accommodating cavity, and the electrical connector is passed through the first through hole and connected to the motor component.

[0008] The electric drive system provided in the embodiment of the present application integrates the housings of the motor assembly and the controller assembly through the structural design of the housing assembly, and provides a through hole between the two housings for passing electrical connectors, thereby eliminating the need to open an installation port from the side of the housing, simplifying the assembly process of the electrical connection while improving the sealing performance of the space where the electrical components are located.

[0009] As an optional embodiment, the electrical connector may include an insulating sheath and three metal bars, the insulating sheath being molded around the outside of the three metal bars; the first ends of the three metal bars are respectively connected to the power modules; the second ends of the three metal bars are all passed through the first through hole and connected to the motor assembly.

[0010] As an optional embodiment, the first ends of the three metal bars are connected to a first connecting portion, which is connected to the power module via a fastener; and / or the insulating sheath has a second connecting portion, which is fixedly connected to the shell via a fastener.

[0011] As an optional embodiment, the shell may include a first shell and a second shell, the first shell is configured to form a first accommodating cavity, and the top of the first shell has an accommodating groove; the second shell cover is arranged above the accommodating groove and is surrounded by the accommodating groove to form a second accommodating cavity; the controller assembly is connected to the second shell.

[0012] As an optional implementation, a mounting boss is provided in the accommodating groove, and the first through hole is provided on the mounting boss; the insulating sheath is sealed to the mounting boss.

[0013] As an optional embodiment, the electrical connector may further include a sealing ring, which is arranged circumferentially around the insulating sheath; the mounting boss has a sealing surface, and the sealing ring abuts against the sealing surface.

[0014] As an optional embodiment, the controller component may further include a signal line; the signal line and the electrical connector are jointly passed through the first through hole; or, the mounting boss is provided with a second through hole, and the signal line is passed through the second through hole.

[0015] As an optional implementation, the insulating sheath is overmolded on the outside of the signal line; or, the controller assembly may further include a seal, which is wrapped around the outside of the signal line and is sealed to the mounting boss.

[0016] As an optional embodiment, the top outer side of the first shell has a raised portion, and the raised portion is surrounded to form a receiving groove; the contour shape of the raised portion matches the contour shape of the second shell; and the raised portion is sealed to the second shell.

[0017] In a second aspect, the present application provides a vehicle comprising the electric drive system in the above technical solution.

[0018] The present application provides an electric drive system and a vehicle, wherein the electric drive system includes a shell assembly, a motor assembly and a controller assembly, the shell assembly has a first accommodating cavity and a second accommodating cavity, the motor assembly is arranged in the first accommodating cavity, the controller assembly is arranged in the second accommodating cavity, the controller assembly includes a power module and an electrical connector, and the electrical connector is connected to the power module; a cavity wall between the first accommodating cavity and the second accommodating cavity is provided with a first through hole, and the power module is connected to a side of the second accommodating cavity away from the first accommodating cavity; the electrical connector extends toward the first accommodating cavity, and the electrical connector is passed through the first through hole and connected to the motor assembly, thereby eliminating the need to open an installation port from the side of the shell, simplifying the assembly process of the electrical connection while improving the sealing performance of the space where the electrical components are located.

[0019] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by the electric drive system and vehicle provided by the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of the structure of the electric drive system provided in an embodiment of the present application;

[0022] Figure 2 A cross-sectional view of an electric drive system provided in an embodiment of the present application;

[0023] Figure 3 An exploded diagram of the electric drive system provided in an embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the assembly of the controller component on the second housing in the electric drive system provided in an embodiment of the present application;

[0025] Figure 5 A cross-sectional view of a controller assembly assembled on a second housing in an electric drive system provided in an embodiment of the present application;

[0026] Figure 6 A schematic diagram of the structure of the electrical connector in the electric drive system provided in an embodiment of the present application;

[0027] Figure 7A front view of an electrical connector in an electric drive system provided in an embodiment of the present application;

[0028] Figure 8 A schematic diagram of the cooperation between the electrical connector and the first housing in the electric drive system provided in an embodiment of the present application;

[0029] Figure 9 for Figure 8 Cross-sectional view in the AA direction.

[0030] Description of reference numerals:

[0031] 10-Electric drive system;

[0032] 100 - housing assembly; 101 - first accommodating chamber; 101a - first chamber; 101b - second chamber; 102 - second accommodating chamber; 103 - accommodating groove; 1031 - mounting boss; 1032 - sealing surface; 104 - raised portion; 105 - first through hole; 106 - partition wall; 107 - second through hole; 110 - first housing; 111 - first end cap; 112 - second end cap; 120 - second housing; 130 - thermal management water jacket;

[0033] 200-motor assembly; 210-output shaft;

[0034] 300 - controller assembly; 310 - power module; 320 - electrical connector; 321 - insulation sheath; 322 - metal busbar; 323 - first connection portion; 324 - second connection portion; 330 - sealing ring; 340 - signal line;

[0035] 400- reducer assembly;

[0036] 500-Drive shaft. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0038] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art may adjust them as needed to suit specific applications.

[0039] Secondly, it should be noted that in the description of this application, terms such as "front", "back", "left", "right", "up", "down", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0040] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0041] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0042] Currently, the electric drive systems of new energy vehicles are rapidly developing toward high power density, low cost, high integration, and high efficiency. This trend requires high power density and compact motors. The electric drive systems of new energy vehicles typically integrate a motor and a reducer. The motor's output shaft works with the reducer, reducing the motor's rotation and outputting power. The motor and reducer are both mounted in the electric drive system's housing, while the controller is separately installed in the controller housing. The controller housing must be sealed to ensure it meets the required protection level, and then the controller housing is assembled and connected to the electric drive system housing.

[0043] However, when assembling the controller in the current electric drive system, an installation window is reserved on the housing for installing the electrical connection components between the controller and the motor. The installation process of the electrical connection components between the controller and the motor is complicated and the sealing effect is poor.

[0044] In response to the above-mentioned problems, an embodiment of the present application provides an electric drive system and a vehicle. Through the structural design of the shell of the electric drive system, the shells of the motor assembly and the controller assembly are integrated, and a through hole is provided between the two shells for passing electrical connectors. This eliminates the need to open an installation port on the side of the shell, simplifies the assembly process of the electrical connection, and improves the sealing performance of the space where the electrical components are located.

[0045] The technical solution of this application will be described in detail below through specific embodiments.

[0046] Figure 1 A schematic diagram of the structure of the electric drive system provided in an embodiment of the present application; Figure 2 A cross-sectional view of an electric drive system provided in an embodiment of the present application; Figure 3 An exploded diagram of the electric drive system provided in an embodiment of the present application;

[0047] Figure 4 This is a schematic diagram of the assembly of the controller component on the second housing in the electric drive system provided in an embodiment of the present application;

[0048] Figure 5 A cross-sectional view of a controller assembly assembled on a second housing in an electric drive system provided in an embodiment of the present application;

[0049] Figure 6 A schematic diagram of the structure of the electrical connector in the electric drive system provided in an embodiment of the present application; Figure 7 A front view of an electrical connector in an electric drive system provided in an embodiment of the present application; Figure 8 A schematic diagram of the cooperation between the electrical connector and the first housing in the electric drive system provided in an embodiment of the present application; Figure 9 for Figure 8 Cross-sectional view in the AA direction.

[0050] like Figures 1 to 9 As shown, an embodiment of the present application provides an electric drive system 10, which includes a housing assembly 100, a motor assembly 200 and a controller assembly 300. The housing assembly 100 has a first accommodating cavity 101 and a second accommodating cavity 102. The motor assembly 200 is arranged in the first accommodating cavity 101, and the controller assembly 300 is arranged in the second accommodating cavity 102.

[0051] The controller assembly 300 includes a power module 310 and an electrical connector 320, which is connected to the power module 310. A first through-hole 105 is defined in the wall between the first and second accommodating cavities 101, 102. The power module 310 is connected to the side of the second accommodating cavity 102 facing away from the first accommodating cavity 101. The electrical connector 320 extends toward the first accommodating cavity 101, passes through the first through-hole 105, and is connected to the motor assembly 200.

[0052] It can be understood that when assembling the electric drive system 10, the controller component 300 can be first installed on the shell component 100, that is, the electrical connector 320 is first installed on the shell component 100. When the shell component 100 is assembled and enclosed to form the second accommodating cavity 102, the electrical connector 320 passes through the first through hole 105, and then the electrical connector 320 can be assembled with the motor component 200 without the need to separately assemble the electrical connector 320 from the outside of the shell component 100 after the controller component 300 is assembled.

[0053] It should be noted that in the electric drive system 10 provided in the embodiment of the present application, the housings of the motor assembly 200 and the controller assembly 300 are integrated through the structural design of the housing assembly 100, and a through hole is provided between the housings of the two for passing the electrical connector 320, thereby eliminating the need to open an installation port on the side of the housing, thereby simplifying the assembly process of the electrical connection and improving the sealing performance of the space where the electrical components are located.

[0054] First, the specific structure of the electrical connector 320 will be described in detail below.

[0055] Please continue to refer to Figures 1 to 9 In one possible implementation, the electrical connector 320 may include an insulating sheath 321 and three metal bars 322. The insulating sheath 321 is overmolded around the three metal bars 322. The first ends of the three metal bars 322 are respectively connected to the power module 310. The second ends of the three metal bars 322 are each inserted through the first through-hole 105 and connected to the motor assembly 200.

[0056] It is understood that the motor assembly 200 may include a motor body, which may be a three-phase asynchronous motor, and the three metal bars 322 correspond to the three-phase power lines W, V, and U of the three-phase motor. The insulating sheath 321 can plastic-coat the three metal bars 322 together, ensuring that the three metal bars 322 can be assembled synchronously and that there is good insulation between the three metal bars 322.

[0057] For example, the insulating sheath 321 and the three metal bars 322 can be formed by a plastic overmolding process. The insulating sheath 321 can be made of insulating plastic or insulating rubber, etc., which is not specifically limited in this embodiment of the present application.

[0058] Exemplarily, the three metal bars 322 may all be copper bars. In addition, other conductive metals or alloy materials may also be used, which is not specifically limited in the embodiment of the present application.

[0059] In some embodiments, the first ends of the three metal bars 322 are connected to the first connection portion 323 , and the first connection portion 323 is connected to the power module 310 via fasteners, thereby improving the convenience of connection and assembly between the metal bars 322 and the power module 310 .

[0060] For example, the first connection portion 323 may be a columnar structure, may be provided with a connection hole, may be welded to the metal bar 322, or may be integrally formed with the metal bar 322, which is not specifically limited in this embodiment of the present application.

[0061] In some embodiments, the insulating sheath 321 has a second connecting portion 324 , and the second connecting portion 324 is fixedly connected to the housing via a fastener.

[0062] It is understandable that the second connection portion 324 can be provided on the side of the insulating sheath 321 , a threaded hole can be provided on the shell, and the second connection portion 324 can be fixedly connected to the shell by a bolt fastener.

[0063] For example, the second connection portion 324 may protrude toward the side of the insulating sheath 321. The second connection portion 324 may be integrally formed with the insulating sheath 321.

[0064] In one possible implementation, the housing may include a first housing 110 and a second housing 120. The first housing 110 is configured to form a first accommodating cavity 101, and the top of the first housing 110 has an accommodating groove 103. The second housing 120 is disposed over the accommodating groove 103 and, together with the accommodating groove 103, forms a second accommodating cavity 102. The controller assembly 300 is connected to the second housing 120.

[0065] The controller assembly 300 is connected to the side of the second housing 120 facing the receiving groove 103. When reassembling the controller assembly 300, the controller assembly 300 can be first installed on the second housing 120, and then the second housing 120 with the controller assembly 300 installed is placed on the first housing 110 to complete the assembly and sealing of the controller assembly 300.

[0066] It is understood that the first housing 110 provides a mounting structure and accommodation space for the motor assembly 200, and a portion of the structure on the second housing 120 is integrated with the second housing 120 to provide an accommodation cavity space for the controller assembly 300. The housing for the controller assembly 300 can utilize a portion of the structure of the first housing 110, so that the controller assembly 300 and the motor assembly 200 are integrated during the assembly of the controller assembly 300.

[0067] The first housing 110 and the second housing 120 are directly opposite and sealed, so that the controller assembly 300 meets the protection level requirement required by the vehicle.

[0068] In some embodiments, a mounting boss 1031 is provided in the receiving groove 103 , and the first through hole 105 is provided on the mounting boss 1031 . The insulating sheath 321 is sealedly connected to the mounting boss 1031 .

[0069] It is understood that the mounting boss 1031 may protrude upward from the first housing 110. The mounting boss 1031 may be integrally formed with the first housing 110.

[0070] In some embodiments, the electrical connector 320 may further include a sealing ring 330 disposed circumferentially around the insulating sheath 321. The mounting boss 1031 has a sealing surface 1032, and the sealing ring 330 abuts against the sealing surface 1032, thereby ensuring good sealing when the insulating sheath 321 is assembled and abutted against the mounting boss 1031 on the first housing 110.

[0071] For example, the sealing ring 330 may be made of elastic sealing materials such as rubber and silicone.

[0072] In some embodiments, the controller assembly 300 may further include a signal line 340 .

[0073] It is understandable that the signal line 340 can be used to transmit a control signal or a detection signal of a sensor, and the embodiment of the present application does not limit the specific functions included in the electrical connector 320.

[0074] For example, the signal line 340 and the electrical connector 320 are both passed through the first through hole 105. In this way, the processing of the housing assembly 100 and the convenience of passing the signal line 340 can be improved.

[0075] For example, the mounting boss 1031 is provided with a second through hole 107, and the signal line 340 is passed through the second through hole 107. In this way, during the passing process, the signal line 340 and the electrical connector 320 can be sealed respectively, thereby improving the sealing reliability.

[0076] For example, the insulating sheath 321 is molded onto the outside of the signal line 340. When the insulating sheath 321 is assembled, the signal line 340 can be assembled and connected simultaneously, thereby simplifying the assembly process and improving assembly efficiency.

[0077] For example, the controller assembly 300 may further include a seal that wraps around the outside of the signal line 340 and is sealed to the mounting boss 1031. Thus, the signal line 340 can be sealed separately from the mounting boss 1031 by the seal, thereby improving the sealing performance at the position of the second through hole 107.

[0078] Please continue to refer to Figures 1 to 9 In one possible implementation, a raised portion 104 is provided on the top outer side of the first housing 110, and the raised portion 104 surrounds the receiving groove 103. The profile of the raised portion 104 matches the profile of the second housing 120. The raised portion 104 is sealed to the second housing 120.

[0079] It is understood that the raised portion 104 can be annular in shape at the top of the first housing 110. The first housing 110 is placed over the raised portion 104 above the first housing 110 from above the second housing 120. The circumferential edge of the second housing 120 is in contact with the raised portion 104. When the second housing 120 is connected to the raised portion 104, the controller assembly 300 is at least partially located within the accommodating groove 103.

[0080] In some embodiments, the first chamber 101a and the second chamber 101b are arranged along a first direction. The assembly direction of the second housing 120 relative to the first housing 110 is a second direction. The first direction is perpendicular to the second direction.

[0081] The first direction may be a horizontal direction, and the second direction may be a vertical direction.

[0082] A partition wall 106 is provided between the first chamber 101a and the second chamber 101b. The motor assembly 200 includes an output shaft 210. The output shaft 210 extends from the first chamber 101a through the first through hole 105 to the second chamber 101b and docks with the reducer assembly 400. The output power of the motor assembly 200 is transmitted to the reducer assembly 400 through the output shaft 210. Lubricating oil is injected into the second chamber 101b. When the electric drive system 10 is working, the lubricating oil can lubricate the reducer assembly 400. The partition wall 106 can prevent the lubricating oil thrown up by the reducer assembly 400 from entering the first chamber 101a, thereby ensuring the cleanliness of the working environment of the motor assembly 200.

[0083] In one possible implementation, the first housing 110 may include a motor housing and a first end cap 111. The motor housing is configured to form a first chamber 101a, and the sidewall of the motor housing facing the first end cap 111 forms a partition wall 106. The first end cap 111 and the partition wall 106 enclose a second chamber 101b, thereby improving the convenience of housing assembly and reducing production costs.

[0084] It is understandable that the housing may further include a second end cover 112 , which is connected to the end of the motor housing away from the first end cover 111 , and is used to limit, fix and protect the end of the motor assembly 200 away from the reducer assembly 400 .

[0085] Exemplarily, the electric drive system 10 may further include a thermal management water jacket 130, which is arranged inside the first shell 110 and around the motor assembly 200. A water flow channel may be formed between the thermal management water jacket 130 and the inner wall of the first shell 110 for passing cooling water to dissipate heat from the motor when the motor assembly 200 generates heat during operation.

[0086] It should be noted that the motor assembly 200 may include a rotor and a stator, the stator is connected to the thermal management water channel, and the rotor is connected to the output shaft 210 .

[0087] In some embodiments, the input end of the reducer assembly 400 is connected to the output shaft 210, and the reducer assembly 400 can be a planetary reducer or a parallel gear reducer.

[0088] For example, the reducer assembly 400 may be a planetary reducer, and the electric drive system 10 may further include a transmission shaft 500. The output shaft 210 has a connecting hole extending through both ends, and the transmission shaft 500 is disposed through the connecting hole. The transmission shaft 500 is connected to the reducer assembly 400 so that the input and output ends of the reducer assembly 400 are coaxial, thereby improving space utilization within the electric drive system 10 and reducing the overall size of the electric drive system 10.

[0089] The present invention also provides a vehicle that can include the electric drive system 10 of the above technical solution. The vehicle provided in the present invention can be a new energy vehicle, including but not limited to a pure electric vehicle, a hybrid electric vehicle, a hydrogen-powered vehicle, etc., which is not specifically limited in the present invention.

[0090] The vehicle provided in the embodiment of the present application has all the technical solutions and all the technical effects of the aforementioned electric drive system 10, which will not be repeated here.

[0091] The present application provides an electric drive system 10 and a vehicle, wherein the electric drive system 10 includes a housing assembly 100, a motor assembly 200 and a controller assembly 300, the housing assembly 100 has a first accommodating chamber 101 and a second accommodating chamber 102, the motor assembly 200 is arranged in the first accommodating chamber 101, and the controller assembly 300 is arranged in the second accommodating chamber 102, the controller assembly 300 includes a power module 310 and an electrical connector 320, and the electrical connector 320 is connected to the power module 310; a first through hole 105 is provided between the first accommodating chamber 101 and the second accommodating chamber 102, the power module 310 is connected to a side of the second accommodating chamber 102 away from the first accommodating chamber 101; the electrical connector 320 extends toward the first accommodating chamber 101, and the electrical connector 320 is passed through the first through hole 105 and connected to the motor assembly 200, thereby eliminating the need to open an installation port from the side of the housing, simplifying the assembly process of the electrical connection while improving the sealing performance of the space where the electrical components are located.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electric drive system (10), characterized in that: The electric drive system (10) comprises a housing assembly (100), a motor assembly (200) and a controller assembly (300); the housing assembly (100) has a first accommodating cavity (101) and a second accommodating cavity (102); the motor assembly (200) is disposed in the first accommodating cavity (101), and the controller assembly (300) is disposed in the second accommodating cavity (102); The controller component (300) comprises a power module (310) and an electrical connector (320), wherein the electrical connector (320) is connected to the power module (310); a first through hole (105) is provided on a cavity wall between the first accommodating cavity (101) and the second accommodating cavity (102), and the power module (310) is connected to a side of the second accommodating cavity (102) that is away from the first accommodating cavity (101); the electrical connector (320) extends toward the first accommodating cavity (101), and the electrical connector (320) is passed through the first through hole (105) and connected to the motor component (200).

2. The electric drive system (10) according to claim 1, characterized in that The electrical connector (320) comprises an insulating sheath (321) and three metal bars (322), wherein the insulating sheath (321) is plastic-coated on the outside of the three metal bars (322); the first ends of the three metal bars (322) are respectively connected to the power module (310); and the second ends of the three metal bars (322) are all passed through the first through hole (105) and connected to the motor assembly (200).

3. The electric drive system (10) according to claim 2, characterized in that The first ends of the three metal bars (322) are all connected to a first connecting portion (323), and the first connecting portion (323) is connected to the power module (310) via a fastener; and / or the insulating sheath (321) has a second connecting portion (324), and the second connecting portion (324) is fixedly connected to the housing via a fastener.

4. The electric drive system (10) according to claim 2 or 3, characterized in that: The shell includes a first shell (110) and a second shell (120), wherein the first shell (110) is configured to form a first accommodating cavity (101), and the top of the first shell (110) has an accommodating groove (103); the second shell (120) is covered on the top of the accommodating groove (103) and is surrounded by the accommodating groove (103) to form the second accommodating cavity (102); the controller component (300) is connected to the second shell (120).

5. The electric drive system (10) according to claim 4, characterized in that A mounting boss (1031) is provided in the accommodating groove (103), and the first through hole (105) is provided on the mounting boss (1031); the insulating sheath (321) and the mounting boss (1031) are sealed and connected.

6. The electric drive system (10) according to claim 5, characterized in that The electrical connector (320) further comprises a sealing ring (330), which is arranged circumferentially around the insulating sheath (321); the mounting boss (1031) has a sealing surface (1032), and the sealing ring (330) abuts against the sealing surface (1032).

7. The electric drive system (10) according to claim 5, characterized in that The controller assembly (300) further includes a signal line (340); the signal line (340) and the electrical connector (320) are both passed through the first through hole (105); or, the mounting boss (1031) is provided with a second through hole (107), and the signal line (340) is passed through the second through hole (107).

8. The electric drive system (10) according to claim 7, characterized in that The insulating sheath (321) is molded around the outside of the signal line (340); or, the controller assembly (300) further comprises a sealing member, the sealing member being wrapped around the outside of the signal line (340), and the sealing member being sealed and connected to the mounting boss (1031).

9. The electric drive system (10) according to claim 4, characterized in that The top outer side of the first shell (110) has a protrusion (104), and the protrusion (104) is arranged around the accommodating groove (103); the contour shape of the protrusion (104) matches the contour shape of the second shell (120); and the protrusion (104) is sealed and connected to the second shell (120).

10. A vehicle, characterized in that: The electric drive system (10) comprises the electric drive system (10) according to any one of claims 1 to 9.

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