Sealing structure for motor controller copper bar

Abstract

The utility model provides a sealing structure for a copper bar of a motor controller, which comprises a shell, at least one connecting pipe is arranged on the shell, a copper bar is arranged in the shell and comprises at least one connecting terminal, and the connecting terminals respectively extend to the outer side of the connecting pipe from the connecting pipe. The inner wall of any connecting pipe is attached to the surface of the connecting terminal in the connecting pipe, a sol groove is formed in one end of any connecting pipe and arranged in the axial direction of the inner wall of the connecting pipe, the inner side of the sol groove makes contact with the corresponding copper bar connecting terminal, and sealant is arranged in the sol groove. The beneficial effects of the utility model are that the end part of the connecting pipe of the copper bar is provided with the sealing structure, thereby achieving the sealing effect.

Description

Technical Field

[0001] The utility model relates to the field of electricity, in particular to a motor controller, and more particularly to a sealing structure for a copper busbar of the motor controller. Background Art

[0002] With the development of new energy vehicles, the requirements for electric drive systems in vehicle layout are getting higher and higher, and electric drive systems are highly integrated and miniaturized. Electric drive systems include motors and motor controllers. When integrating and assembling electric drive systems, it is necessary to ensure the sealing of the connection between the motor controller and the motor, and to prevent high-temperature water vapor or cooling lubricating oil generated inside the motor from entering the motor controller and affecting the normal operation of the motor controller.

[0003] In the prior art, the motor controller is connected to the motor through a copper busbar, and the copper busbar and its shell are integrally formed by injection molding, and the injection molding section is perpendicular to the copper busbar. The copper busbar assembly includes a copper busbar and injection-molded plastic. The two materials are not physically bonded. Injecting plastic directly on the copper busbar, especially during the injection molding and demolding process, will destroy the sealing and create the risk of air leakage and water leakage. Therefore, the copper busbar near one end of the motor is at risk of air leakage and water leakage. Utility Model Content

[0004] The utility model aims to provide a sealing structure for a copper busbar of a motor controller, which is intended to solve the technical problem in the prior art that sealing is required at the connection between the motor controller and the motor.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sealing structure for a copper busbar of a motor controller comprises a shell, at least one connecting tube is arranged on the shell, a copper busbar is arranged in the shell, the copper busbar comprises connecting terminals, the number of the connecting terminals is the same as the connecting tubes, the connecting terminals respectively pass through the connecting tubes and extend to the outside of the connecting tubes, the inner wall of any one of the connecting tubes is in contact with the surface of the connecting terminal in the tube, a sol groove is arranged in the end face of the outer end of any one of the connecting tubes, the sol groove is arranged along the circumference of the inner wall of the connecting tube, the sol groove is filled with sealant, and the sealant surrounds the connecting terminal.

[0007] Furthermore, the housing, the connecting tube and the connecting terminal are integrally injection molded.

[0008] Furthermore, a sealing lip is provided at the inner end of the sol groove along the circumference of the connecting terminal, and the cross-sectional shape of the sealing lip is a right triangle.

[0009] Furthermore, the sealing lip and the connecting pipe are integrally injection molded.

[0010] Working principle:

[0011] One end of the copper bar is connected to the motor, and the other end of the copper bar is connected to the motor controller. The end of the copper bar connected to the motor needs to achieve a sealing effect. The invention of the utility model is that a sol groove is set at the end of the connecting pipe of the copper bar, and the sol groove is filled with glue to achieve sealing. According to different usage scene requirements, sealants with different properties (such as oil resistance and high temperature resistance) can be selected. On the other hand, the inner end of the sol groove is set as a sealing slope to further increase the sealing performance.

[0012] Compared with the prior art, the utility model has the beneficial effect that a sealing structure is arranged at the end of the connecting pipe of the copper busbar to achieve a sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The utility model is a three-dimensional structural schematic diagram of a copper busbar used for a motor controller.

[0014] Figure 2 The utility model is a side view structural schematic diagram of a copper busbar used for a motor controller.

[0015] Figure 3 The utility model is a side view structural schematic diagram of a copper busbar used for a motor controller.

[0016] Figure 4 yes Figure 3 Enlarged schematic diagram at point A in the middle.

[0017] Figure 5 yes Figure 3 Schematic diagram of the cross-section at point B in the middle.

[0018] Figure 6 yes Figure 5 Enlarged schematic diagram at point C in the middle. Implementation Example

[0019] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , the utility model provides a technical solution:

[0020] A sealing structure for a copper busbar of a motor controller comprises a shell 1. At least one connecting tube 11 is arranged on the shell 1. A copper busbar 2 is arranged in the shell 1. The copper busbar 2 comprises at least one connecting terminal 21. The number of the connecting terminals 21 is the same as that of the connecting tubes 11. The connecting terminals 21 pass through the connecting tubes 11 and extend to the outside of the connecting tubes 11 respectively. The inner wall of any connecting tube 11 is in contact with the surface of the connecting terminal 21 in the tube. A sol groove 3 is arranged in the end face of the outer end of any connecting tube 11. The sol groove 3 is arranged along the circumference of the inner wall of the connecting tube 11. The sol groove 3 is filled with sealant. The sealant surrounds the connecting terminal 21.

[0021] Furthermore, the housing 1 , the connecting tube 11 and the connecting terminal 21 are integrally injection molded.

[0022] Furthermore, a sealing lip 31 is provided at the inner end of the sol tank 3 along the circumference of the connecting terminal 21 , and the cross-sectional shape of the sealing lip 31 is a right triangle.

[0023] Specifically, during the injection molding process, the bevel draft can greatly reduce the degree of damage to the sealing between the injection molding body and the copper busbar.

[0024] Furthermore, the sealing lip 31 and the connecting pipe 11 are integrally injection molded.

[0025] The working process of this embodiment:

[0026] A sealant is provided on one end of the connecting pipe 11 on one side where the copper busbar is connected to the motor, and sealing is achieved by the sealant.

[0027] like Figure 6 As shown, the sealing lip 31 surrounds the outer circumference of the connecting terminal 21 at the inner end of the sol groove 3. When liquid penetrates into the connecting tube 11 through the sealant, the sealing lip 31 guides the liquid to penetrate outward along the inclined surface of the right triangle, preventing the penetrated liquid from penetrating deeper from the gap between the sealing lip 31 and the connecting terminal 21, thereby achieving a double sealing effect together with the sealant.

Claims

1. A sealing structure for a copper busbar of a motor controller, comprising a housing (1), at least one connecting tube (11) being arranged on the housing (1), a copper busbar (2) being arranged inside the housing (1), the copper busbar (2) comprising connecting terminals (21), the number of the connecting terminals (21) being the same as the number of the connecting tubes (11), the connecting terminals (21) respectively passing through the connecting tubes (11) and extending to the outside of the connecting tubes (11), characterized in that: The inner wall of any one of the connecting tubes (11) is in contact with the surface of the connecting terminal (21) inside the tube, and a sol groove (3) is provided in the end surface of the outer end of any one of the connecting tubes (11). The sol groove (3) is provided along the circumference of the inner wall of the connecting tube (11), and the sol groove (3) is filled with a sealant, and the sealant surrounds the connecting terminal (21).

2. A sealing structure for a copper busbar of a motor controller according to claim 1, characterized in that: The housing (1), the connecting tube (11) and the connecting terminal (21) are integrally injection molded.

3. The sealing structure for the copper busbar of a motor controller according to claim 1, characterized in that: A sealing lip (31) is provided at the inner end of the sol groove (3) along the circumference of the connecting terminal (21), and the cross-sectional shape of the sealing lip (31) is a right triangle.

4. A sealing structure for a copper busbar of a motor controller according to claim 3, characterized in that: The sealing lip (31) and the connecting pipe (11) are integrally injection-molded.

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