Motor side cavity sealing structure

Abstract

A motor side cavity sealing structure comprises a motor, a wire holder is arranged at the bottom of a motor end cover of the motor, the wire holder comprises a wire holder assembly and a wire holder cover plate, the wire holder assembly comprises a wire holder base body and a three-phase copper bar, the wire holder assembly is fixedly installed on the motor end cover, and the wire holder cover plate is fixedly installed on the wire holder base body. The mounting end faces of the wire holder assembly and the motor end cover are glued, a three-phase outgoing line terminal of the motor penetrates through an outgoing line via hole in the wire holder base body and then is fixedly connected with the bottom end of a three-phase copper bar, and the top end of the three-phase copper bar penetrates through a three-phase copper bar via hole in a motor controller and is fixedly connected with the motor controller. A temperature sensor leading-out wire of the motor is led out through a wire passing hole in the side edge of the top of the wire holder base body, the wire passing hole is sealed through glue, the wire holder cover plate is installed and fixed to the top of the wire holder base body, and the locking face of the wire holder cover plate and the wire holder base body is subjected to glue treatment. The sealing structure can ensure the sealing performance of the motor side cavity.

Description

Technical Field

[0001] This utility model relates to the field of electrical engineering technology, specifically to a sealing structure for a motor side cavity. Background Technology

[0002] Currently, driven by market demand for miniaturized and low-cost drive system assemblies, both new energy electric passenger vehicles and commercial vehicles are trending towards integration of drive motors and drive motor controllers (hereinafter referred to as electronic controls). To minimize the size of the electric drive unit, the electronic control unit's cavity is often not completely sealed. This places extremely high demands on the sealing performance of the motor-side cavity, especially at the three-phase lead-out points, where it is necessary to prevent condensate from flowing into the electronic control cavity and damaging the electronic control circuit board, potentially causing a safety accident. Current sealing structures cannot effectively seal the three-phase lead-out holes.

[0003] Therefore, there is an urgent need for a sealing structure that can effectively seal the cavity on the electronic control side. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a sealing structure for the motor side cavity. This sealing structure ensures the airtightness of the motor side cavity.

[0005] The purpose of this utility model is achieved by the following solution: a motor side cavity sealing structure, including a motor, a terminal block is provided at the bottom of the motor end cover of the motor, the terminal block includes a terminal block assembly and a terminal block cover plate, the terminal block assembly includes a terminal block base and a three-phase copper busbar, the terminal block assembly is fixedly installed on the motor end cover, the mounting end face of the terminal block assembly and the motor end cover is treated with glue, the three-phase lead wire terminals of the motor pass through the lead wire through hole on the terminal block base and are connected and fixed to the bottom end of the three-phase copper busbar, the top end of the three-phase copper busbar passes through the three-phase copper busbar through hole of the motor controller and is connected and fixed to the motor controller, the lead wire of the motor temperature sensor is led out through the wire through hole on the top side of the terminal block base, the wire through hole is sealed with glue, the terminal block cover plate is installed and fixed on the top of the terminal block base, the locking surface of the terminal block cover plate and the terminal block base is treated with glue.

[0006] The bottom of the terminal block assembly fits tightly against the motor end cover, and bolts pass through the holes to fix the terminal block assembly onto the motor end cover.

[0007] The stud at the top of the three-phase copper busbar passes through the three-phase copper busbar through hole on the motor controller and is locked to the motor controller by a nut.

[0008] The terminal block cover is fixed to the top of the terminal block base by bolts.

[0009] The three-phase copper busbar and the terminal block base are integrally injection molded to form a terminal block assembly.

[0010] The junction between the terminal block assembly and the terminal block cover is a stop structure.

[0011] The advantage of this utility model is that it consists of two parts: a terminal block assembly and a terminal block cover. The terminal block assembly is integrally injection molded from a three-phase copper busbar and a terminal block base. The bottom of the terminal block assembly is completely fitted with the surface of the motor end cover, and the top is completely fitted with the terminal block cover, thus preventing the three-phase output holes of the motor from being directly exposed in the housing of the motor control box, thereby ensuring the sealing of the motor side cavity. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a top view of the present invention;

[0014] Figure 3 This is a schematic diagram of the terminal block assembly structure;

[0015] Figure 4 Top view of the terminal block assembly. Detailed Implementation

[0016] like Figures 1 to 4 As shown, a motor side cavity sealing structure includes a motor. A terminal block is provided at the bottom of the motor end cover. The terminal block includes a terminal block assembly 1 and a terminal block cover plate 2. The terminal block assembly 1 includes a terminal block base 4 and a three-phase copper busbar 3. The three-phase copper busbar 3 and the terminal block base 4 are integrally injection molded to form the terminal block assembly 1. The terminal block assembly 1 is fixedly installed on the motor end cover. The bottom of the terminal block assembly 1 is tightly fitted to the motor end cover. Bolts pass through holes 9 to fix the terminal block assembly 1 to the motor end cover. The mounting surfaces of the terminal block assembly 1 and the motor end cover are treated with adhesive. The three-phase lead terminals of the motor pass through the lead through holes 5 on the terminal block base 4 and are connected and fixed to the bottom end of the three-phase copper busbar 3. The top end of the three-phase copper busbar 3 passes through the three-phase copper busbar through hole of the motor controller and is locked and fixed to the motor controller with a nut. The lead wire of the motor's temperature sensor is led out through the through hole 8 on the top side of the terminal block base 4, and the through hole 8 is sealed with adhesive. The terminal block cover 2 is fixed to the top of the terminal block base 4 with bolts, and the locking surfaces of the terminal block cover 2 and the terminal block base 4 are treated with adhesive. The joint between the terminal block assembly 1 and the terminal block cover 2 has a stop structure. The stop structure ensures that the terminal block assembly 1 and the terminal block cover 2 fit tightly together.

[0017] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An electric machine side cavity seal structure comprising an electric machine, characterized by: The motor end cover bottom of the motor is provided with a terminal block, the terminal block comprises a terminal block assembly (1) and a terminal block cover plate (2), the terminal block assembly (1) comprises a terminal block base body (4) and a three-phase copper bar (3), the terminal block assembly (1) is fixedly installed on the motor end cover, the terminal block assembly (1) and the installation end face of the motor end cover are glued, the three-phase lead terminal of the motor passes through the lead hole (5) on the terminal block base body (4) and is connected and fixed with the bottom end of the three-phase copper bar (3), the top end of the three-phase copper bar (3) passes through the three-phase copper bar hole of the motor controller and is connected and fixed with the motor controller, the temperature sensor lead of the motor is led out through the wire hole (8) on the top side of the terminal block base body (4), the wire hole (8) is glued and sealed, the terminal block cover plate (2) is installed and fixed on the top of the terminal block base body (4), and the terminal block cover plate (2) and the locking surface of the terminal block base body (4) are glued.

2. The motor side cavity seal structure of claim 1, wherein: The bottom of the terminal block assembly (1) is tightly attached to the motor end cover, and the terminal block assembly (1) is fixedly installed on the motor end cover through the bolt hole (9).

3. The motor side cavity seal of claim 1, wherein: The stud (7) at the top end of the three-phase copper bar (3) passes through the three-phase copper bar hole on the motor controller and is connected and fixed with the motor controller through a nut.

4. The motor side cavity seal of claim 1, wherein: The terminal block cover plate (2) is installed and fixed on the top of the terminal block base body (4) through a bolt.

5. The motor side cavity seal of claim 1, wherein: The three-phase copper bar (3) and the terminal block base body (4) are integrally injection molded as the terminal block assembly (1).

6. The motor side cavity seal of claim 1, wherein: The combination of the terminal block assembly (1) and the terminal block cover plate (2) is a stop structure.

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