Driving motor system and vehicle

Abstract

The utility model discloses a driving motor system and a vehicle. The driving motor system comprises a controller sub-assembly, a three-phase wiring seat and a driving motor sub-assembly, the controller sub-assembly comprises a first shell, and a power module, a driving board, a control board, a bus capacitor and a current sensor are arranged in the first shell; the driving motor sub-assembly comprises a second shell, and a stator assembly, a rotor assembly and a rotary transformer are arranged in the second shell; the first shell is connected with the second shell, a controller accommodating cavity is formed between the first shell and the second shell, the three-phase wiring seat is arranged in the controller accommodating cavity, and the power module is electrically connected with the stator assembly through the three-phase wiring seat. According to the utility model, the sub-assembly can be independently replaced during after-sales maintenance while the integration level is ensured, and the occupied space, the cost and the total weight can be reduced.

Description

Technical Field

[0001] The utility model relates to a drive motor, in particular to a drive motor system and a vehicle. Background Art

[0002] As the core of new energy vehicles, the integration scheme of the drive motor system directly affects the vehicle layout space, part cost, and manufacturing process difficulty. The split layout scheme of the motor and the controller has obvious defects such as space waste, a large number of system parts, and high costs, and is gradually abandoned by the market; the integrated scheme of the motor and the controller has a high degree of integration, fewer parts, and lower costs. However, due to the high integration, the motor and the controller cannot be manufactured separately, resulting in high production and manufacturing difficulty, high threshold, and high after-sales maintenance cost. In the field of commercial vehicles, there are schemes that integrate the controller at the rear end of the motor, above or in front of the motor, but most of the schemes cannot balance the issues of easy manufacturing, high integration, and convenient after-sales maintenance. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a drive motor system and a vehicle, which can realize the separate replacement of sub-assemblies during after-sales maintenance while ensuring the integration degree, and can also reduce the space occupation, reduce the cost, and reduce the total weight.

[0004] A drive motor system in the utility model includes a controller sub-assembly, a three-phase terminal block, and a drive motor sub-assembly; the controller sub-assembly includes a first housing, and a power module, a drive board, a control board, a bus capacitor, and a current sensor are arranged in the first housing; the drive motor sub-assembly includes a second housing, and a stator assembly, a rotor assembly, and a resolver are arranged in the second housing; the first housing is connected to the second housing, and a controller accommodation cavity is formed between the first housing and the second housing, the three-phase terminal block is arranged in the controller accommodation cavity, and the power module is electrically connected to the stator assembly through the three-phase terminal block.

[0005] Further, the second housing includes a housing main body, a front end cover arranged on one side of the housing main body facing the controller sub-assembly, and a rear end cover arranged on one side of the housing main body facing away from the controller sub-assembly, and a receiving groove is arranged on one side of the rear end cover facing the controller sub-assembly.

[0006] Further, a cover wall structure protruding backward is arranged on the rear end cover, and the cover wall structure surrounds to form the receiving groove; the rear end face of the cover wall structure is attached to the front end face of the first housing.

[0007] Further, a controller cooling water channel interface is provided on the front end face of the first housing, and a motor cooling water channel interface is provided on the rear end face of the cover wall structure. The positions of the controller cooling water channel interface and the motor cooling water channel interface correspond to each other.

[0008] Further, the main body of the housing is in a ring-shaped cylinder structure, and the ring-shaped cylinder structure has a middle hole that penetrates in the front-rear direction.

[0009] Further, a support structure for fixing the DC bus is provided on the lower side of the front cover, a wire passing hole is provided on the lower side of the rear cover, and the bus capacitor is electrically connected to the DC bus.

[0010] Further, the control board, the drive board, and the power module are arranged in sequence in the front-to-rear direction. The bus capacitor is arranged on the lower side of the power module, and the current sensor is arranged on the upper side of the power module.

[0011] Further, a resolver signal interface is provided on the controller subassembly. The resolver signal interface is connected to the resolver. A window is provided on the first housing. The window penetrates in the front-rear direction, and a detachable cover plate is provided on the side of the window away from the second housing. The position of the window corresponds to the position of the three-phase wiring base.

[0012] Further, the stator assembly is arranged inside the second housing, the rotor assembly is arranged inside the stator assembly, and the resolver is arranged on the rear cover.

[0013] A vehicle in the present utility model includes the above-mentioned drive motor system.

[0014] The beneficial effects of the present utility model are:

[0015] (1) By integrally installing the various components of the controller subassembly on the first housing and integrally installing the various components of the drive motor subassembly on the second housing, the present utility model can separately manufacture the controller subassembly and the drive motor subassembly. After the two subassemblies are manufactured, they are assembled together, which can achieve separate replacement of the subassemblies during after-sales maintenance while ensuring the integration degree.

[0016] (2) The utility model connects the first housing and the second housing to form a controller accommodation cavity, which provides an accommodation space for the three-phase wiring seat and each component of the controller sub-assembly, enabling the controller sub-assembly and the drive motor sub-assembly to be integrally installed together. Since the first housing and the second housing jointly form the controller accommodation cavity, the controller sub-assembly and the drive motor sub-assembly share the rear end cover of the second housing, achieving co-shell integration. This can reduce the volume of the first housing, enable some structures of the second housing to be shared, reduce space occupation, reduce costs, and lower the total weight.

[0017] (3) The rear end cover of the second housing and the three-phase wiring seat of the utility model make the controller accommodation cavity and the inner cavity of the second housing not communicate, so that each component of the controller sub-assembly and each component of the drive motor sub-assembly are located in different chambers respectively, preventing mutual influence and contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the following drawings are provided for the description of the utility model:

[0019] Figure 1 It is a schematic structural diagram of the utility model;

[0020] Figure 2 It is a cross-sectional schematic diagram of the controller sub-assembly of the utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of the three-phase wiring seat and the drive motor sub-assembly of the utility model.

[0022] The marks in the drawings are as follows:

[0023] 1 - controller sub-assembly, 11 - first housing, 12 - power module, 13 - drive board, 14 - control board, 15 - bus capacitor, 16 - current sensor, 17 - detachable cover plate, 18 - resolver signal interface;

[0024] 2 - three-phase wiring seat;

[0025] 3 - drive motor sub-assembly, 31 - second housing, 311 - housing main body, 312 - front end cover, 3121 - support structure, 313 - rear end cover, 3131 - accommodation groove, 3132 - wire passing hole, 32 - stator assembly, 33 - rotor assembly, 34 - resolver, 35 - motor cooling water channel interface;

[0026] 4 - DC bus. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following describes the technical solutions of the utility model in detail with reference to the drawings and embodiments.

[0028] As Figures 1-3 shown, a drive motor system in this embodiment includes a controller subassembly 1, a three-phase terminal block 2, and a drive motor subassembly 3; the controller subassembly 1 includes a first housing 11, and a power module 12, a drive board 13, a control board 14, a bus capacitor 15, and a current sensor 16 are arranged in the first housing 11; the drive motor subassembly 3 includes a second housing 31, and a stator assembly 32, a rotor assembly 33, and a resolver 34 are arranged in the second housing 31; the first housing 11 is connected to the second housing 31, and a controller accommodation cavity is formed between the first housing 11 and the second housing 31, the three-phase terminal block 2 is arranged in the controller accommodation cavity, and the power module 12 is electrically connected to the stator assembly 32 through the three-phase terminal block 2.

[0029] By integrally installing the various components of the controller subassembly 1 on the first housing 11 and integrally installing the various components of the drive motor subassembly 3 on the second housing 31, the controller subassembly 1 and the drive motor subassembly 3 can be manufactured separately. After the two subassemblies are manufactured, they are assembled together, which can achieve separate replacement of the subassemblies during after-sales maintenance while ensuring the integration degree; by connecting the first housing 11 and the second housing 31 to form a controller accommodation cavity, the controller accommodation cavity provides a accommodation space for the three-phase terminal block 2 and the various components of the controller subassembly 1, enabling the controller subassembly 1 and the drive motor subassembly 3 to be integrally installed together. And because the first housing 11 and the second housing 31 jointly form the controller accommodation cavity, the controller subassembly 1 and the drive motor subassembly 3 share the rear end cover 313 of the second housing 31 to achieve co-shell integration, which can reduce the volume of the first housing 11, enable some structures of the second housing 31 to be shared, reduce space occupation, reduce costs, and reduce the total weight. The rear end cover 313 of the second housing 31 and the three-phase terminal block 2 make the controller accommodation cavity and the inner cavity of the second housing 31 not communicate, so that the various components of the controller subassembly 1 and the various components of the drive motor subassembly 3 are located in different chambers respectively, preventing mutual influence and contamination.

[0030] In this embodiment, the second housing 31 includes a housing main body 311, a front end cover 312 arranged on one side of the housing main body 311 facing the controller subassembly 1, and a rear end cover 313 arranged on the side of the housing main body 311 facing away from the controller subassembly 1. A receiving groove 3131 is arranged on one side of the rear end cover 313 facing the controller subassembly 1. Dividing the second housing 31 into three parts can reduce the processing and manufacturing difficulty of the second housing 31. The receiving groove 3131 can be used to form a part of the controller accommodation cavity.

[0031] In this embodiment, a cover wall structure protruding backward is provided on the rear end cover 313, and the cover wall structure surrounds to form the accommodation groove 3131; the rear end face of the cover wall structure is attached to the front end face of the first housing 11.

[0032] In this embodiment, a controller cooling water channel interface is provided on the front end face of the first housing 11, and a motor cooling water channel interface 35 is provided on the rear end face of the cover wall structure. The controller cooling water channel interface and the motor cooling water channel interface 35 are in corresponding positions. By attaching the rear end face of the cover wall structure to the front end face of the first housing 11, end face sealing can be achieved, preventing leakage at the connection between the controller cooling water channel interface and the motor cooling water channel interface 35. A controller cooling water channel communicating with the controller cooling water channel interface is provided in the first housing 11, and a motor cooling water channel communicating with the motor cooling water channel interface 35 is provided in the second housing 31, realizing the integration of the cooling water channels inside the housing, making the appearance of the drive motor system neat and improving the space utilization rate.

[0033] In this embodiment, the housing main body 311 has an annular cylinder structure, and the annular cylinder structure has a through hole penetrating in the front-rear direction. The annular cylinder structure can adopt an extruded profile with a constant cross-section, which can adapt to motors of different lengths and is suitable for serialized production of motors of different lengths.

[0034] In this embodiment, a support structure 3121 for fixing the DC bus 4 is provided on the lower side of the front end cover 312, and a wire passing hole 3132 is provided on the lower side of the rear end cover 313. The bus capacitor 15 is electrically connected to the DC bus 4. Both the wire passing hole 3132 and the support structure 3121 are located on the lower side, which can reduce the length of the wire harness. In addition, the support structure 3121 fixes the DC bus 4, which can prevent the DC bus 4 from shaking and ensure the sealing performance at the connection between the DC bus 4 and the wire passing hole 3132 of the rear end cover 313.

[0035] In this embodiment, the control board 14, the drive board 13, and the power module 12 are arranged in sequence along the front-to-rear direction. The bus capacitor 15 is arranged on the lower side of the power module 12, and the current sensor 16 is arranged on the upper side of the power module 12. After the controller sub-assembly 1 and the drive motor sub-assembly 3 are integrally installed together, the current sensor 16 is located near the three-phase terminal block 2, which can monitor the current situation.

[0036] In this embodiment, a resolver signal interface 18 is provided on the controller subassembly 1. The resolver signal interface 18 is connected to the resolver 34. A window is provided on the first housing 11. The window penetrates in the front-rear direction, and a detachable cover plate 17 is provided on a side of the window away from the second housing 31. The position of the window corresponds to the position of the three-phase terminal block 2. The detachable cover plate 17 facilitates the installation and removal of the wire harness. The resolver signal interface 18 is used to connect to an external wire harness.

[0037] In this embodiment, the stator assembly 32 is disposed inside the second housing 31, the rotor assembly 33 is disposed inside the stator assembly 32, and the resolver 34 is disposed on the rear end cover 313. Among them, the front and rear ends of the rotor assembly 33 are respectively connected to the front end cover 312 and the rear end cover 313 through bearings.

[0038] A vehicle in this embodiment includes the above-mentioned drive motor system.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A drive motor system, characterized in that: The invention comprises a controller sub-assembly (1), a three-phase terminal block (2) and a drive motor sub-assembly (3); the controller sub-assembly (1) comprises a first housing (11), wherein a power module (12), a drive board (13), a control board (14), a bus capacitor (15) and a current sensor (16) are arranged in the first housing (11); the drive motor sub-assembly (3) comprises a second housing (31), wherein a stator assembly (32), a rotor assembly (33) and a rotary transformer (34) are arranged in the second housing (31); the first housing (11) is connected to the second housing (31), and a controller accommodating chamber is formed between the first housing (11) and the second housing (31), wherein the three-phase terminal block (2) is arranged in the controller accommodating chamber, and the power module (12) is electrically connected to the stator assembly (32) via the three-phase terminal block (2).

2. The drive motor system according to claim 1, characterized in that: The second housing (31) comprises a housing body (311), a front end cover (312) arranged on a side of the housing body (311) facing the controller sub-assembly (1), and a rear end cover (313) arranged on a side of the housing body (311) facing away from the controller sub-assembly (1), wherein a receiving groove (3131) is arranged on a side of the rear end cover (313) facing the controller sub-assembly (1).

3. The drive motor system according to claim 2, characterized in that: The rear end cover (313) is provided with a cover wall structure protruding backwards, the cover wall structure surroundingly forming the accommodating groove (3131); the rear end surface of the cover wall structure is in contact with the front end surface of the first shell (11).

4. The drive motor system according to claim 3, characterized in that: A controller cooling water channel interface is provided on the front end surface of the first shell (11), and a motor cooling water channel interface (35) is provided on the rear end surface of the cover wall structure, the controller cooling water channel interface and the motor cooling water channel interface (35) being located correspondingly.

5. The drive motor system according to claim 2, characterized in that: The shell body (311) is in the form of an annular cylindrical structure, and the annular cylindrical structure has a central hole that penetrates in the front-to-back direction.

6. The drive motor system according to claim 2, characterized in that: A support structure (3121) for fixing the DC busbar (4) is provided on the lower side of the front cover (312), and a wire-passing hole (3132) is provided on the lower side of the rear cover (313). The busbar capacitor (15) is electrically connected to the DC busbar (4).

7. The drive motor system according to claim 1, characterized in that: The control board (14), the drive board (13), and the power module (12) are arranged in sequence from front to back, the bus capacitor (15) is arranged on the lower side of the power module (12), and the current sensor (16) is arranged on the upper side of the power module (12).

8. The drive motor system according to claim 1, characterized in that: The controller subassembly (1) is provided with a resolver signal interface (18), the resolver signal interface (18) being connected to the resolver (34); the first housing (11) is provided with a window, the window being through in the front-to-back direction, and a removable cover plate (17) being provided on a side of the window away from the second housing (31); the position of the window corresponds to the position of the three-phase terminal block (2).

9. The drive motor system according to claim 2, characterized in that: The stator assembly (32) is arranged inside the second housing (31), the rotor assembly (33) is arranged inside the stator assembly (32), and the rotary transformer (34) is arranged on the rear end cover (313).

10. A vehicle, characterized in that: Comprising a drive motor system as described in any one of claims 1-9.

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