Electric drive system and vehicle

Abstract

The utility model relates to an electric drive system and a vehicle, and the electric drive system comprises a motor which comprises a first joint piece; a conductive pin; and the motor controller is internally provided with a second joint piece, a shell of the motor controller is provided with a first through hole corresponding to the position of the second joint piece, and the conductive pin can penetrate through the first through hole and is clamped by the first joint piece and the second joint piece. During installation, the two ends of the conductive pin can be in lap joint with the first joint piece and the second joint piece only by penetrating through the first through hole, additional fastening connection is not needed, and only the motor controller needs to be installed on the speed reducer. According to the connection mode, the motor controller and the motor can be assembled separately, the step that the motor controller and the motor can be connected only by disassembling the motor controller in existing connection is omitted, the overcurrent capacity and the contact reliability can be guaranteed, and meanwhile rapid disassembly and assembly of a conductive structure between the motor controller and the motor are achieved.

Description

Technical Field

[0001] This disclosure relates to the field of vehicles, and more specifically, to an electric drive system and a vehicle. Background Technology

[0002] For heavy-duty trucks, the motor controller is typically integrated into the powertrain or electric drive axle. Due to the complexity of driving conditions, the randomness of driver habits, and the randomness of vibration acceleration at various points on the electric drive axle, the reliability of the solder joints of the electronic components in the motor controller faces significant challenges. Under the same road spectrum, the vibration acceleration values ​​at different locations on the same axle vary significantly; generally, the further away from the axle center, the greater the vibration acceleration. To ensure the reliability of the electronic controller on the electric drive axle, in addition to considering the rationality of its placement, attention must also be paid to the high-voltage connection method, installation reliability, and ease of maintenance of the motor controller on the axle. Currently, the motor controller and motor of existing heavy-duty trucks are often connected via a set of high-voltage lines. The high-voltage connection is mostly a direct connection using copper busbars, requiring fastening with screws. Some locations also require screw holes for installation and removal. This connection method necessitates disassembling the motor controller during installation or maintenance to process the connection structure between the controller and motor, which is time-consuming, labor-intensive, and impacts production efficiency. Utility Model Content

[0003] The purpose of this disclosure is to provide an electric drive system and vehicle that enables quick assembly and disassembly of the motor controller and the conductive structure of the motor.

[0004] To achieve the above objectives, this disclosure provides an electric drive system, comprising:

[0005] The motor includes a first coupling member;

[0006] Conductive pins; and

[0007] The motor controller has a second connecting member inside. The housing of the motor controller has a first through hole corresponding to the position of the second connecting member. The conductive pin can pass through the first through hole and be clamped by the first connecting member and the second connecting member.

[0008] Optionally, the electric drive system includes a speed reducer, the speed reducer comprising:

[0009] The housing, the motor, and the motor controller are connected to the housing; and

[0010] A junction box is connected to the housing, and one end of the first connector that contacts the conductive pin is disposed in the junction box, which is located between the motor controller and the housing.

[0011] Optionally, a connector is fixedly provided in the junction box, and a plurality of protrusions are formed on the connector at intervals. The first connector is fixedly connected between two adjacent protrusions. A limiting hole is formed on the connector to at least partially accommodate the first connector, for limiting the first connector in the radial direction of the conductive pin.

[0012] Optionally, the electric drive system further includes a guide frame fixed on the connecting seat. The guide frame has a second through hole for the conductive pin to pass through. The second through hole corresponds to the position of the first coupling member and can radially limit the conductive pin.

[0013] Optionally, the motor controller further includes:

[0014] Multiple fixing rods are spaced apart inside the housing of the motor controller, and the two ends of the second coupling member can be sleeved on two adjacent fixing rods; and

[0015] Multiple limiting members are respectively provided on the fixed rod, which can limit the second connecting member on the fixed rod.

[0016] Optionally, the fixing rod includes:

[0017] A fixed section is connected to the housing of the motor controller; and

[0018] A connecting segment is stepped with the fixed segment, and the diameter of the connecting segment is smaller than that of the fixed segment. The limiting member is disposed on the connecting segment and can limit the second connecting member between the fixed segment and the limiting member.

[0019] Optionally, the connecting section is a threaded structure, and the limiting member includes a nut and an elastic member. The nut is connected to the threaded structure, and the elastic member is disposed between the nut and the second engaging member, which can provide a force to press the second engaging member against the fixed section.

[0020] Optionally, the first connector has a first blind hole, the second connector has a second blind hole, and the two ends of the conductive pin are respectively disposed in the first blind hole and the second blind hole.

[0021] Optionally, there are multiple first and second connectors, and they are arranged in a one-to-one correspondence. There are multiple conductive pins, and the two ends of each conductive pin are in contact with the corresponding first and second connectors.

[0022] According to another aspect of this disclosure, a vehicle is provided, including the electric drive system described above.

[0023] With the above technical solution, during installation, the conductive pin only needs to pass through the first through hole to overlap with the first and second connecting parts at both ends, respectively. No additional fastening connection between the conductive pin and the connecting parts is required; the motor controller simply needs to be installed on the reducer. This connection method allows for separate assembly of the motor controller and the motor, eliminating the need to disassemble the motor controller to connect them in existing connections. It ensures current carrying capacity and contact reliability while enabling rapid assembly and disassembly of the conductive structure between the motor controller and the motor, saving installation time, reducing installation and maintenance difficulty, and improving installation convenience.

[0024] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0026] Figure 1 This is a cross-sectional schematic diagram of an electric drive system according to one embodiment of the present disclosure.

[0027] Figure 2 This is a schematic diagram of an electric drive system according to one embodiment of the present disclosure.

[0028] Figure 3 This is a schematic diagram of an electric drive system (with the motor controller removed) according to one embodiment of the present disclosure.

[0029] Figure 4 yes Figure 3 An enlarged view of part A based on the basic structure.

[0030] Figure 5 This is a schematic diagram of the housing and junction box of the reducer in an electric drive system according to one embodiment of the present disclosure.

[0031] Figure 6 This is a schematic diagram from another perspective of a speed reducer in an electric drive system according to one embodiment of the present disclosure.

[0032] Figure 7 This is a schematic diagram of a motor in an electric drive system according to one embodiment of the present disclosure.

[0033] Figure 8 This is a schematic diagram of a motor controller in an electric drive system according to one embodiment of the present disclosure.

[0034] Figure 9 This is a schematic diagram of a second coupling member in an electric drive system according to one embodiment of the present disclosure.

[0035] Figure 10 This is a schematic diagram of a motor controller (with the limiting member and the second coupling member removed) in an electric drive system according to one embodiment of the present disclosure.

[0036] Figure 11 This is a schematic diagram of a connector in an electric drive system according to one embodiment of the present disclosure.

[0037] Figure 12 This is a schematic diagram of a guide frame in an electric drive system according to one embodiment of the present disclosure.

[0038] Explanation of reference numerals in the attached figures

[0039] 1-Reducer; 10-Wire hole; 11-Housing; 111-Mounting support point; 12-Junction box; 13-Connecting seat; 130-Limiting hole; 131-Protruding end; 2-Motor; 21-First connecting piece; 211-First blind hole; 3-Conductive pin; 4-Motor controller; 41-Second connecting piece; 411-Second blind hole; 42-First through hole; 43-Fixing rod; 431-Fixing section; 432-Connecting section; 44-Limiting piece; 441-Nut; 442-Elastic element; 45-MCU module; 5-Guide frame; 51-Second through hole. Detailed Implementation

[0040] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0041] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined in relation to the outline of the corresponding components. The terms "first," "second," etc., are used to distinguish different components and are not sequential or significant. Furthermore, in the following description, when referring to the accompanying drawings, unless otherwise explained, the same reference numerals in different drawings denote the same or similar elements.

[0042] According to one embodiment of this disclosure, such as Figures 1 to 12 As shown, an electric drive system is provided, which may include a motor 2, a conductive pin 3, and a motor controller 4. The motor 2 includes a first coupling member 21. The motor controller 4 has a second coupling member 41 inside, and a first through hole 42 corresponding to the position of the second coupling member 41 is formed on the housing of the motor controller 4. The conductive pin 3 can pass through the first through hole 42 and be clamped by the first coupling member 21 and the second coupling member 41.

[0043] With the above technical solution, during installation, the conductive pin 3 only needs to pass through the first through hole 42 to overlap with the first connecting piece 21 and the second connecting piece 41 at both ends, respectively. No additional fastening connection is required between the conductive pin 3 and the connecting pieces; the motor controller 4 can simply be installed in the corresponding mounting position. This connection method allows the motor controller 4 and the motor 2 to be assembled separately, eliminating the need to disassemble the motor controller 4 to connect the motor controller 4 and the motor 2 in existing connections. It ensures current carrying capacity and contact reliability while enabling rapid disassembly and assembly of the conductive structure between the motor controller 4 and the motor 2, saving installation time, reducing the difficulty of installation and maintenance, and improving installation convenience.

[0044] It should be noted that the first connecting member 21 and the second connecting member 41 can both be a single entity, and the conductive pin 3 can also be a single entity, with both ends corresponding to the first connecting member 21 and the second connecting member 41 respectively. Alternatively, the first connecting member 21 and the second connecting member 41 can both be multiple entities, each corresponding to the other, and the conductive pin 3 can be multiple entities, with both ends of each conductive pin 3 contacting the corresponding first connecting member 21 and the second connecting member 41 respectively. For example, when the motor controller 4 is connected to the high-voltage connector of the motor 2, it is a three-phase connection. In this case, the number of the first connecting member 21, the second connecting member 41, and the conductive pin 3 are all three. In this case, the number of the first through holes 42 can be a single elongated through hole that corresponds to the positions of the three second connecting members 41 simultaneously, or it can be three through holes spaced apart and corresponding to the three second connecting members 41 respectively. This disclosure does not limit the number of through holes in this case.

[0045] Furthermore, such as Figures 1 to 11As shown, the electric drive system may also include a reducer 1, which may include a housing 11 and a junction box 12. The motor 2 and motor controller 4 can be connected to the housing 11, and the junction box 12 can also be connected to the housing 11. One end of the first connecting member 21 that contacts the conductive pin 3 is disposed in the junction box 12, which is located between the motor controller 4 and the housing 11. The contact area between the junction box 12 and the motor controller 4 is smaller than the contact area between the motor controller 4 and the junction box 12. The housing 11 may also be provided with a mounting support point 111 that cooperates with the motor controller 4. Thus, the junction box 12 can be located on one side of the motor controller 4, with the outer periphery of the motor controller 4 near the junction box 12 connected to the junction box 12, and the outer periphery of the motor controller 4 away from the junction box 12 connected to the mounting support point 111. A wire-through hole 10 may also be provided on the housing 11, through which the first connecting member 21 can pass and connect to the conductive pin 3. The junction box 12 and the motor controller 4 may also be spaced apart on the housing 11; this disclosure does not limit this arrangement. It should be noted that the junction box 12 can be either open or closed. When the junction box 12 is open, the opening of the junction box 12 is opposite to the first through hole 42. When the junction box 12 is closed, a through hole opposite to the first through hole 42 is also provided on the side of the junction box 12 that is opposite to the first through hole 42, allowing the conductive pin 3 to pass through and engage with the second connecting member 41.

[0046] Furthermore, such as Figure 1 , Figure 4 and Figure 11 As shown, a connector 13 is fixedly installed in the junction box 12. Multiple protrusions 131 are spaced apart on the connector 13. A first engaging member 21 is fixedly connected between two adjacent protrusions 131, and the side of the first engaging member 21 furthest from the conductive pin 3 can cooperate with the connector 13 to enhance the limiting ability of the first engaging member 21. Specifically, the connector 13 may have a limiting hole 130 that at least partially accommodates the first engaging member 21, used to limit the first engaging member 21 in the radial direction of the conductive pin 3, making its connection with the conductive pin 3 more stable, thereby improving the stability of the electric drive system connection.

[0047] During the installation of the electric drive system, first fix the junction box 12 to the reducer 1, then fix the connector 13 in the junction box 12. The first connector 21 can be inserted along the gap between the two protruding ends 131 and placed between the two protruding ends 131, and cooperate with the limiting hole 130 on the connector 13. Then fix the motor 2 to the reducer 1, and finally contact the conductive pin 3 with the first connector 21 to complete the fixation of the single-sided connector. The motor controller 4 is equipped with an MCU module (Microcontroller Unit) 45. After connecting the MCU module 45 to the second connector 41, the motor controller 4 can be encapsulated. After encapsulation, simply align the other end of the conductive pin 3 with the first through hole 42 to pass through the first through hole 42 and contact the second connector 41, and then connect the motor controller 4 to the reducer 1. When it is necessary to replace the conductive pin 3, simply remove the motor controller 4 from the reducer 1 without opening the motor controller 4.

[0048] Furthermore, such as Figure 1 , Figure 4 and Figure 12 As shown, the electric drive system may also include a guide frame 5, which is fixed on the connecting seat 13. A second through hole 51 is formed on the guide frame 5 for the conductive pin 3 to pass through. The second through hole 51 corresponds to the position of the first connecting member 21, and there is a height difference between the second through hole 51 and the first connecting member 21. After the conductive pin 3 passes through the second through hole 51, the plane where the second through hole 51 is located can radially limit the middle section of the conductive pin 3 to reduce the possibility of displacement of the conductive pin 3 during operation. At the same time, it also facilitates the fixing of the conductive pin 3 during installation. The conductive pin 3 only needs to pass through the guide frame 5 to contact the first connecting member 21. Meanwhile, the guide frame 5 limits the fixing of the conductive pin 3, so that the conductive pin 3 can pass smoothly through the first through hole 42 when the motor controller 4 is installed.

[0049] According to one embodiment of this disclosure, such as Figure 1 , Figures 8 to 10 As shown, the motor controller 4 may further include multiple fixing rods 43 and multiple limiting members 44. The multiple fixing rods 43 may be spaced apart inside the housing of the motor controller 4, and both ends of the second connecting member 41 may be sleeved on two adjacent fixing rods 43. The multiple limiting members 44 may be respectively disposed on the fixing rods 43, and may limit the second connecting member 41 on the fixing rods 43. Here, the limiting member 44 may be two nuts or clips, to limit the end of the second connecting member 41 between the two nuts or clips. It may also be a single elastic member or a structure where nut 441 cooperates with elastic member 442 as described below; this disclosure does not limit this.

[0050] Furthermore, such as Figure 1 , Figure 8 and Figure 10As shown, the fixing rod 43 includes a fixing section 431 and a connecting section 432. The fixing section 431 can be connected to the housing of the motor controller 4, and the connecting section 432 can be stepped with the fixing section 431. The diameter of the connecting section 432 is smaller than that of the fixing section 431. The limiting member 44 is disposed on the connecting section 432 and can limit the second connecting member 41 between the fixing section 431 and the limiting member 44, so that the second connecting member 41 can be spaced apart from the housing of the motor controller 4, reducing the possibility of leakage.

[0051] Furthermore, such as Figure 1 , Figure 8 and Figure 10 As shown, the connecting section 432 can be a threaded structure, and the limiting member 44 includes a nut 441 and an elastic member 442. The nut 441 is connected to the threaded structure, and the elastic member 442 is disposed between the nut 441 and the second engaging member 41, providing a force to press the second engaging member 41 against the fixed section 431. The elastic member 442 can be rubber or a spring, and this disclosure does not limit it. In this way, since the elastic member 442 can always provide a force to press the second engaging member 41 against the fixed section 431, it ensures that the conductive pin 3 is pressed against the second engaging member 41 and the first engaging member 21, which reduces the probability of poor contact. At the same time, it can also be adapted to conductive pins 3 of various lengths, thereby improving the versatility of the electric drive system.

[0052] According to one embodiment of this disclosure, such as Figure 1 , Figure 7 and Figure 9 As shown, the first connecting member 21 may have a first blind hole 211, and the second connecting member 41 may have a second blind hole 411. The two ends of the conductive pin 3 are respectively disposed in the first blind hole 211 and the second blind hole 411. The first blind hole 211 and the second blind hole 411 can respectively limit the conductive pin 3 at both ends, preventing the conductive pin 3 from becoming misaligned due to external vibration during operation, thus reducing the contact area with the first connecting member 21 or the second connecting member 41 and causing poor contact. The depth of the first blind hole 211 and the second blind hole 411 can be set according to actual needs, and this disclosure does not limit it.

[0053] Based on the above solutions, this disclosure also provides a vehicle that includes the above-described electric drive system and has all the beneficial effects of the above-described electric drive system, which will not be repeated here.

[0054] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0055] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0056] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An electric drive system, characterized in that, include: The motor includes a first coupling member; Conductive pin; and The motor controller has a second connecting member inside. The housing of the motor controller has a first through hole corresponding to the position of the second connecting member. The conductive pin can pass through the first through hole and be clamped by the first connecting member and the second connecting member.

2. The electric drive system according to claim 1, characterized in that, The electric drive system includes a speed reducer, which includes: The housing, the motor, and the motor controller are connected to the housing; and A junction box is connected to the housing, and one end of the first connector that contacts the conductive pin is disposed in the junction box, which is located between the motor controller and the housing.

3. The electric drive system according to claim 2, characterized in that, A connector is fixedly provided in the junction box. A plurality of protrusions are formed on the connector at intervals. The first connector is fixedly connected between two adjacent protrusions. A limiting hole is formed on the connector to at least partially accommodate the first connector, for limiting the first connector in the radial direction of the conductive pin.

4. The electric drive system according to claim 3, characterized in that, The electric drive system also includes a guide frame, which is fixed on the connecting seat. The guide frame has a second through hole for the conductive pin to pass through. The second through hole corresponds to the position of the first coupling member and can radially limit the conductive pin.

5. The electric drive system according to claim 1, characterized in that, The motor controller also includes: Multiple fixing rods are spaced apart inside the housing of the motor controller, and the two ends of the second coupling member can be sleeved on two adjacent fixing rods; and Multiple limiting members are respectively provided on the fixed rod, which can limit the second connecting member on the fixed rod.

6. The electric drive system according to claim 5, characterized in that, The fixing rod includes: A fixed section is connected to the housing of the motor controller; and A connecting segment is stepped with the fixed segment, and the diameter of the connecting segment is smaller than that of the fixed segment. The limiting member is disposed on the connecting segment and can limit the second connecting member between the fixed segment and the limiting member.

7. The electric drive system according to claim 6, characterized in that, The connecting section has a threaded structure, and the limiting member includes a nut and an elastic member. The nut is connected to the threaded structure, and the elastic member is disposed between the nut and the second engaging member, which can provide a force to press the second engaging member against the fixed section.

8. The electric drive system according to claim 1, characterized in that, The first connector has a first blind hole, the second connector has a second blind hole, and the two ends of the conductive pin are respectively disposed in the first blind hole and the second blind hole.

9. The electric drive system according to any one of claims 1-8, characterized in that, There are multiple first and second connectors, and they are arranged in a one-to-one correspondence. There are multiple conductive pins, and the two ends of each conductive pin are in contact with the corresponding first and second connectors.

10. A vehicle, characterized in that, The electric drive system included in any one of claims 1-9.

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