Electric drive assembly and vehicle

Abstract

The utility model discloses an electric drive assembly and a vehicle, and belongs to the technical field of vehicle parts. The electric drive assembly comprises a controller, a motor and a three-phase copper bar structure, the three-phase copper bar structure comprises a three-phase copper bar assembly and a sealing gasket, the three-phase copper bar assembly is connected with the controller and the motor, and the sealing gasket is arranged in the motor and used for sealing the joint of the three-phase copper bar assembly and the motor. The motor is filled with lubricating oil, and the lowest height of the sealing gasket is higher than the highest liquid level of the lubricating oil. The copper bar structure solves the problems that a sealing gasket in an existing copper bar structure of a vehicle driving assembly is soaked in lubricating oil for a long time, and consequently aging and sealing failure are caused.

Description

Technical Field

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

[0002] The current electric drive assembly of electric vehicles is mainly a three-in-one assembly consisting of a drive motor, a reducer, and a controller. The power module arranged in the controller is connected to the stator winding in the drive motor through a three-phase copper busbar to drive the motor to rotate. In order to prevent the lubricating oil in the drive motor from entering the controller, the position where the three-phase copper busbar penetrates into the cavity of the drive motor is sealed by a rubber pad, thereby isolating the cavity of the drive motor from the cavity of the controller.

[0003] The three-phase copper busbar includes a first connecting terminal on the electronic control side and a second connecting terminal on the motor side. The three first connecting terminals are respectively connected to the three second connecting terminals in a one-to-one correspondence. The existing three-phase copper busbar is generally arranged in the horizontal direction, so the corresponding first connecting terminals and second connecting terminals are at approximately the same height, and the setting height of the sealing gasket is limited by the position of the second connecting terminal. Therefore, in the existing three-phase copper busbar, the height of the sealing gasket is relatively low, resulting in at least part of the sealing gasket being below the liquid level of the lubricating oil of the drive motor. Therefore, the sealing gasket has the problem of being immersed in the lubricating oil for a long time, resulting in aging of the sealing gasket material, and further causing sealing failure. Utility Model Content

[0004] The purpose of the present application is to overcome the deficiencies of the prior art and to provide an electric drive assembly and a vehicle to prevent the sealing gasket from being immersed in lubricating oil for a long time, leading to aging and sealing failure.

[0005] The technical solution of the present application provides an electric drive assembly, including a controller, a motor and a three-phase copper busbar structure, wherein the three-phase copper busbar structure includes a three-phase copper busbar assembly and a sealing gasket, wherein the three-phase copper busbar assembly connects the controller and the motor, and the sealing gasket is arranged in the motor and is used to seal the connection between the three-phase copper busbar assembly and the motor, and the motor is filled with lubricating oil, and the lowest height of the sealing gasket is higher than the highest liquid level of the lubricating oil.

[0006] Optionally, the three-phase copper busbar assembly also includes a terminal block, the controller has a first cavity, the motor is provided with a second cavity, the first cavity is provided with a power module, the second cavity is provided with a stator winding, the second cavity is filled with lubricating oil, the first cavity and the second cavity are connected through a wiring port, the terminal block is connected to the wiring port, the first end of the three-phase copper busbar assembly is connected to the power module, the second end of the three-phase copper busbar assembly passes through the terminal block and is connected to the stator winding, and the sealing gasket is connected to the terminal block. Optionally, the three-phase copper busbar assembly includes a first wiring portion for connecting to the power module in the controller and a second wiring portion for connecting to the stator winding in the motor;

[0007] The first wiring portion includes three first connection terminals for connecting to the power module, the second wiring portion includes three second connection terminals, an end portion of the first wiring portion away from the first connection terminal is connected to the second connection terminal, and the lowest height of the second connection terminal is higher than the highest height of the first connection terminal;

[0008] The second wiring portion is connected to the wiring seat, and the sealing gasket is connected to the wiring seat.

[0009] Optionally, the first wiring portion also includes three first connecting sections, the first connecting sections include a first scattered section, a collecting section and a second scattered section, the collecting section is connected between the first scattered section and the second scattered section, three groups of the first scattered sections are connected to the first connecting terminals one by one, and three groups of the second scattered sections are respectively connected to the second connecting terminals one by one.

[0010] Optionally, three first connection terminals are arranged in parallel in the X direction, and the first connection terminals are extended in the Z direction, three second connection terminals are arranged in parallel in the Z direction, and adjacent second connection terminals are staggered in the Y direction;

[0011] The X direction is the length direction of the vehicle, the Y direction is the width direction of the vehicle, and the Z direction is the height direction of the vehicle.

[0012] Optionally, the three collecting sections are arranged in parallel in the Y direction and are in the same straight line in the X direction.

[0013] Optionally, the three first connecting terminals are arranged in parallel in the Z direction, and the collecting section is extended upward along the Z direction and connected to the second dispersing section.

[0014] Optionally, three of the second connecting terminals are arranged in parallel and at intervals in the Y direction.

[0015] Optionally, the second wiring portion and the wiring seat are integrally injection molded, at least a portion of the second wiring portion passes through the wiring seat, and the second connection terminal is arranged inside the motor. Optionally, three power modules are provided, and the three power modules are arranged along the X direction.

[0016] The utility model also discloses a vehicle, comprising the electric drive assembly.

[0017] After adopting the above technical solution, the following beneficial effects are achieved:

[0018] The electric drive assembly disclosed in the present application can seal the motor and the controller through a sealing gasket to prevent the lubricating oil in the motor from flowing to the controller side, and the minimum height of the sealing gasket is higher than the maximum liquid level of the lubricating oil, thereby preventing the sealing gasket from being immersed in the lubricating oil and causing aging and sealing failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The disclosure of this application will become easier to understand with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of a three-phase copper busbar structure in one embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of an electric drive assembly in one embodiment of the utility model.

[0022] Reference table of reference numerals:

[0023] Three-phase copper busbar assembly 10;

[0024] The first wiring portion 11 includes a first connection terminal 111 , a first dispersed section 112 , a collection section 113 , and a second dispersed section 114 ;

[0025] Second wiring portion 12: second connection terminal 121;

[0026] Terminal block 20;

[0027] Sealing pad 30;

[0028] Power module 40;

[0029] Controller 50: first cavity 500;

[0030] Motor 60: second cavity 600. DETAILED DESCRIPTION

[0031] The specific implementation of the present application is further described below with reference to the accompanying drawings.

[0032] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a variety of structural modes and implementation modes that can be replaced by those skilled in the art can be replaced with each other. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the application.

[0033] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above-mentioned in this application can be understood according to the specific circumstances.

[0035] In one embodiment of the present utility model, an electric drive assembly is disclosed, such as Figure 1 , Figure 2 As shown, it includes a controller 50, a motor 60 and a three-phase copper bar structure, and the three-phase copper bar structure includes a three-phase copper bar assembly 10 and a sealing gasket 30;

[0036] The three-phase copper busbar assembly 10 connects the controller 50 and the motor 60. The sealing gasket 30 is arranged in the motor 60 and is used to seal the connection between the three-phase copper busbar assembly 10 and the motor 60. The motor 60 is filled with lubricating oil, and the lowest height of the sealing gasket 30 is higher than the highest liquid level of the lubricating oil.

[0037] The electric drive assembly disclosed in the present application can seal the motor 60 and the controller 50 through the sealing gasket 30 to prevent the lubricating oil in the motor 60 from flowing to the motor 60, and the minimum height of the sealing gasket 30 is higher than the maximum liquid level of the lubricating oil, thereby preventing the sealing gasket 30 from being immersed in the lubricating oil for a long time, resulting in aging and sealing failure.

[0038] In some embodiments of the utility model, the three-phase copper busbar assembly 10 also includes a terminal block 20, a first cavity 500 is provided in the controller 50, a second cavity 600 is provided in the motor 60, a power module 40 is provided in the first cavity 500, a stator winding is provided in the second cavity 600, and the second cavity 600 is filled with lubricating oil. The first cavity 500 and the second cavity 600 are connected through a wiring port, and the terminal block 20 is connected at the wiring port to cover the wiring port and allow the three-phase copper busbar assembly 10 to pass through its surface. Specifically, the first end of the three-phase copper busbar assembly 10 is connected to the power module 40, and the second end of the three-phase copper busbar assembly 10 passes through the terminal block 20 and is connected to the stator winding. The sealing pad 30 is located between the terminal block 20 and one side surface of the controller 50 to achieve a sealed connection between the terminal block 20 and the controller 50. In an optional embodiment, as Figure 1 As shown, the wiring seat 20 and the sealing gasket 30 are provided as a group, which are located on the inner side of the wiring port; in other alternative embodiments, the wiring seat 20 and the sealing gasket 30 are provided in two groups, which are distributed on opposite sides of the wiring port.

[0039] Wherein, the first cavity 500 and the second cavity 600 are independent of each other, one end of the three-phase copper bar assembly 10 penetrates into the interior of the first cavity 500 and is connected to the power module 40 in the first cavity 500, and the other end of the three-phase copper bar assembly 10 penetrates into the interior of the second cavity 600 from the wiring port and is connected to the stator winding in the second cavity 600. Wherein, the lubricating oil is filled into the second cavity 600, and the terminal block 20 is connected in the wiring port, which can play the role of the wiring port to prevent the lubricating oil in the second cavity 600 from entering the first cavity 500 through the wiring port. In addition, the sealing gasket 30 is connected to the terminal block 20, and the sealing gasket 30 is arranged on the inner side of the terminal block 20 to further seal the second cavity 600. Wherein, the outer contour area of ​​the sealing gasket 30 is larger than the area of ​​the wiring port, so that the sealing gasket 30 can abut on the cavity surface surrounding the wiring port to improve the sealing performance. In some embodiments of the utility model, the three-phase copper busbar assembly 10 includes a first wiring portion 11 for connecting to a power module 40 in a controller and a second wiring portion 12 for connecting to a stator winding in a motor, the first wiring portion 11 includes three first connection terminals 111 for connecting to the power module 40, the second wiring portion 12 includes three second connection terminals 121, and the lowest height of the second connection terminal 121 is higher than the highest height of the first connection terminal 111; the second wiring portion 12 is connected to the wiring seat 20, and the sealing gasket 30 is connected to the wiring seat 20.

[0040] Further, such as Figure 1As shown, three power modules 40 are provided, and the three power modules 40 are respectively connected to the three first connection terminals 111 in a one-to-one correspondence to correspond to the W phase, the U phase and the V phase, wherein the three second connection terminals 121 are respectively connected to the three first connection terminals 111 in a one-to-one correspondence, and the power modules 40 can convert high-voltage alternating current into low-voltage direct current and transmit it to the stator winding of the motor 60 for driving the motor 60 to rotate.

[0041] Among them, Figure 1 As shown, the three second connecting terminals 121 are all connected to the terminal socket 20, and correspondingly, the cross-sectional size of the sealing gasket 30 along the YZ direction is the same as the cross-sectional size of the terminal socket 20, and the sealing gasket 30 is fitted and fixed to the side of the terminal socket 20 facing the electronic control side. Therefore, the setting position of the terminal socket 20 is determined by the position of the second connecting terminal 121, and the setting position of the sealing gasket 30 is determined by the position of the terminal socket 20. The terminal socket 20 is connected between the first cavity 500 of the controller 50 and the second cavity 600 of the motor 60, and the sealing gasket 30 can achieve sealing between the first cavity 500 and the second cavity 600 to prevent the lubricating oil inside the motor 60 from entering the controller 50.

[0042] In the present application, since the lowest height of the second connecting terminal 121 is higher than the highest height of the first connecting terminal 111, all the second connecting terminals 121 can be located above the first connecting terminal 111, so that the positions of the terminal block 20 connected to the second connecting terminal 121 and the sealing gasket 30 connected to the terminal block 20 can be raised along with the second connecting terminal 121, thereby preventing the sealing gasket 30 from being far away from the liquid surface of the lubricating oil, thereby preventing the sealing gasket 30 from being immersed in the lubricating oil for a long time, resulting in aging and sealing failure.

[0043] In some embodiments of the present invention, Figure 1 As shown, the first wiring portion 11 also includes three first connecting sections, the first connecting section includes a first dispersed section 112, a collecting section 113 and a second dispersed section 114, the collecting section 113 is connected between the first dispersed section 112 and the second dispersed section 114, the three groups of first dispersed sections 112 are connected to the first connecting terminals 111 one-to-one, and the three groups of second dispersed sections 114 are respectively connected to the second connecting terminals 121 one-to-one.

[0044] Further, such as Figure 1 As shown, the three first connection segments correspond one-to-one to the three first connection terminals 111 and the three second connection terminals 121 respectively, wherein the three first scattered segments 112 in the three first connection segments correspond one-to-one to the three first connection terminals 111 respectively, and similarly, the three second scattered segments 114 in the three first connection terminals correspond one-to-one to the three second connection terminals 121 respectively, and the three first connection segments are not connected to each other.

[0045] Among them, Figure 1 As shown, the first dispersion section 112, the converging section 113 and the second dispersion section 114 are an integrally formed structure, the three converging sections 113 are arranged in parallel, and the three converging sections 113 are projected onto the same plane and are in the same straight line direction, thereby reducing the space occupied by the first wiring portion 11 in the first cavity 500 in the controller 50.

[0046] In some embodiments of the present invention, Figure 1 As shown, three first connection terminals 111 are arranged in parallel in the X direction, and a single first connection terminal 111 is extended and arranged in the Z direction, three second connection terminals 121 are arranged in parallel in the Z direction, and adjacent second connection terminals 121 are staggered in the Y direction;

[0047] The X direction is the length direction of the vehicle, the Y direction is the width direction of the vehicle, and the Z direction is the height direction of the vehicle.

[0048] Further, such as Figure 1 As shown, the three power modules 40 are arranged in parallel and spaced apart along the X direction, and the first connection terminal 111 is set at the upper end of the power module 40. Therefore, the three first connection terminals 111 are correspondingly arranged in parallel and spaced apart along the X direction, and the three first connection terminals 111 can be extended upward along the Z direction.

[0049] In addition, the three first dispersed sections 112 are respectively connected to the first connection terminals 111, the first dispersed sections 112 and the corresponding first connection terminals 111 are arranged in the same straight line direction, and the first dispersed sections 112 extend upward along the Z direction and are connected to the collection section 113. The collection section 113 is arranged along the X direction, and the three collection sections 113 are parallel to each other and arranged in the same straight line direction, and are respectively connected to the corresponding three second connection terminals 121 through the second dispersed sections 114. This arrangement can fully utilize the upper space of the first cavity 500 in the controller 50, so that the arrangement position of the second connection terminal 121 can be raised in the Z direction, and then the arrangement position of the corresponding terminal block 20 and the sealing gasket 30 can be made higher, so as to avoid the lubricating oil from soaking the sealing gasket 30.

[0050] Furthermore, through the design of the first dispersion section 112, the gathering section 113 and the second dispersion section 114, the first connection terminal 111 and the second connection terminal 121 do not need to be arranged in the same direction, so that the setting position of the second connection terminal 121 can be adjusted so that the setting position of the second connection terminal 121 is adjusted to above the liquid level of the lubricating oil.

[0051] In some embodiments of the present invention, Figure 1As shown, the three collecting sections 113 are arranged in parallel in the Y direction and are in the same straight line in the X direction.

[0052] Further, such as Figure 1 As shown, the three second connecting terminals 121 are arranged in parallel and at intervals in the Z direction, and the adjacent second connecting terminals 121 are staggered in the Y direction, so as to reduce the space reserved for the adjacent second connecting terminals 121 in the Z direction. In this way, it is possible to ensure that the adjacent second connecting terminals 121 do not contact each other, so that the spacing distance between the second connecting terminals 121 in the Z direction is reduced, thereby reducing the size of the terminal block 20 and the sealing gasket 30. In addition, since the Z-direction spacing between adjacent second connecting terminals 121 is reduced, the Z-direction length of the corresponding sealing gasket 30 covering the three second connecting terminals 121 can also be reduced, that is, the sealing gasket 30 can be arranged away from the liquid surface of the lubricating oil to avoid being soaked in the lubricating oil.

[0053] In some optional embodiments of the present invention, Figure 1 As shown, three first connecting terminals 111 are arranged in parallel in the Z direction, and the collecting section 113 is extended upward along the Z direction and connected to the second dispersing section 114 .

[0054] Alternatively, if Figure 1 As shown, the three power modules 40 are arranged in parallel and at intervals in the Z direction, and the first connection terminals 111 are arranged at the side ends of the power modules 40. Therefore, the three first connection terminals 111 are arranged in parallel and at intervals in the Z direction, wherein the first dispersed segments 112 and the corresponding first connection terminals 111 are arranged on the same straight line, that is, the first connection terminals 111 are arranged along the X direction.

[0055] Further, such as Figure 1 As shown, the three collecting sections 113 are arranged in parallel in the Y direction, and the collecting sections 113 are straight line sections arranged along the Z direction. The three collecting sections 113 are arranged at intervals in the Y direction. The three second connecting terminals 121 are arranged in parallel and at intervals in the Z direction, and adjacent second connecting terminals 121 are staggered in the Y direction.

[0056] In some optional embodiments of the present invention, three second connection terminals 121 are arranged in parallel and at intervals in the Y direction.

[0057] Optionally, adjacent second connection terminals 121 are staggered in the Z direction, so that the spacing distance between the second connection terminals 121 in the Y direction can be smaller.

[0058] In some embodiments of the present invention, Figure 1As shown, the second wiring portion 12 and the wiring seat 20 are integrally injection-molded, at least a portion of the second wiring portion 12 passes through the wiring seat 20, and the second connection terminal 121 is arranged on the electric control side.

[0059] The sealing performance of the wiring base 20 can be improved by integrally injection molding the second wiring portion 12 and the wiring base 20 , so as to prevent lubricating oil from invading into the interior of the controller 50 through the wiring base 20 .

[0060] Furthermore, the second connection terminal 121 and the second dispersion section 114 are fixed together by bolt connection, so as to be more flexible in assembly and installation, thereby realizing flexible arrangement of the electrodes and the cavity openings of the controller 50 .

[0061] Furthermore, the second wiring portion 12 can be bent according to the actual wiring position. Furthermore, the controller 50 is arranged on the side of the motor 60, and the three power modules 40 are arranged in parallel and spaced apart in the X direction, wherein the power modules 40 convert the high voltage AC into low voltage DC and input it into the motor 60 to drive the motor 60 to rotate.

[0062] In some embodiments of the present invention, three power modules 40 are provided, and the three power modules 40 are arranged along the X direction respectively.

[0063] The utility model also discloses a vehicle, comprising the electric drive assembly.

[0064] The above description is only the principle and preferred embodiment of the present application. It should be pointed out that, for ordinary technicians in this field, on the basis of the principle of the present application, several other modifications can be made, which should also be regarded as the protection scope of the present application.

Claims

1. An electric drive assembly, characterized in that: It includes a controller, a motor and a three-phase copper busbar structure, wherein the three-phase copper busbar structure includes a three-phase copper busbar assembly and a sealing gasket; The three-phase copper busbar assembly connects the controller and the motor, the sealing gasket is arranged in the motor and is used to seal the connection between the three-phase copper busbar assembly and the motor, the motor is filled with lubricating oil, and the lowest height of the sealing gasket is higher than the highest liquid level of the lubricating oil.

2. The electric drive assembly according to claim 1, characterized in that: The three-phase copper busbar assembly also includes a terminal block, the controller has a first cavity, the motor is provided with a second cavity, the first cavity is provided with a power module, the second cavity is provided with a stator winding, the second cavity is filled with lubricating oil, the first cavity and the second cavity are connected through a wiring port, the terminal block is connected to the wiring port, the first end of the three-phase copper busbar assembly is connected to the power module, the second end of the three-phase copper busbar assembly passes through the terminal block and is connected to the stator winding, and the sealing gasket is connected to the terminal block.

3. The electric drive assembly according to claim 2, characterized in that: The three-phase copper busbar assembly includes a first connection portion for connecting to a power module in the controller and a second connection portion for connecting to a stator winding in the motor; The first wiring portion includes three first connection terminals for connecting to the power module, the second wiring portion includes three second connection terminals, an end portion of the first wiring portion away from the first connection terminal is connected to the second connection terminal, and the lowest height of the second connection terminal is higher than the highest height of the first connection terminal; The second wiring portion is connected to the wiring seat, and the sealing gasket is connected to the wiring seat.

4. The electric drive assembly according to claim 3, characterized in that: The first wiring portion also includes three first connecting sections, the first connecting sections include a first scattered section, a collecting section and a second scattered section, the collecting section is connected between the first scattered section and the second scattered section, three groups of the first scattered sections are connected to the first connecting terminals one by one, and three groups of the second scattered sections are respectively connected to the second connecting terminals one by one.

5. The electric drive assembly according to claim 4, characterized in that: The three first connection terminals are arranged in parallel in the X direction, and the first connection terminals are extended in the Z direction, the three second connection terminals are arranged in parallel in the Z direction, and the adjacent second connection terminals are staggered in the Y direction; The X direction is the length direction of the vehicle, the Y direction is the width direction of the vehicle, and the Z direction is the height direction of the vehicle.

6. The electric drive assembly according to claim 5, characterized in that: The three collecting sections are arranged in parallel in the Y direction and are in the same straight line in the X direction.

7. The electric drive assembly according to claim 4, characterized in that: The three first connecting terminals are arranged in parallel in the Z direction, and the collecting section is extended upward along the Z direction and connected to the second dispersing section.

8. The electric drive assembly according to claim 3, characterized in that: The three second connection terminals are arranged in parallel and at intervals in the Y direction.

9. The electric drive assembly according to any one of claims 3 to 8, characterized in that: The second wiring portion and the wiring seat are integrally injection-molded, at least a portion of the second wiring portion passes through the wiring seat, and the second connecting terminal is arranged inside the motor.

10. The electric drive assembly according to claim 2, characterized in that: There are three power modules, and the three power modules are arranged along the X direction respectively.

11. A vehicle, characterized in that: Comprising the electric drive assembly according to any one of claims 1-10.

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