Electromagnetic shielding structure for quick pressed cables

Abstract

The invention discloses an electromagnetic shielding structure for quick pressed cables. The electromagnetic shielding structure comprises a lower pressing plate and an upper pressing plate. The lower pressing plate is arranged on a housing mounting seat of a motor controller. The lower pressing plate is provided with a plurality of junction blocks which are separately arranged in the length direction and are in one-to-one correspondence with wire inlet holes of the housing of the motor controller. Each junction block is provided with a wiring groove which is used for embedding a metal shielding layer of the cable. The upper pressing plate detachably presses the lower pressing plate and compresses the metal shielding layer of the cable which is arranged in each wiring groove of the lower pressing plate. The electromagnetic shielding structure has beneficial effects of quickly pressing and fixing one or a plurality of cables on the housing of the motor controller, ensuring electromagnetic compatibility, greatly reducing cost of a connector, and preventing metal shielding layer damage in detachment of the cables for maintenance.

Description

technical field [0001] The invention relates to the technical field of cable electromagnetic shielding, in particular to an electromagnetic shielding structure for fast press-fit cables. Background technique [0002] The maturation of the electric vehicle industry requires higher and higher integration of its electric drive system. At the same time, the motor controller, one of the three major components of electric vehicles, is developing in the direction of high power density and high-speed signal transmission. The electromagnetic compatibility (EMC) problem of the control system that comes from it is becoming more and more prominent. As the cables connecting each module in the electronic control system, they can receive electromagnetic waves and radiate electromagnetic waves. Therefore, cables are not only a good channel for conduction interference, but also an important source of radiation interference. How to solve the electromagnetic compatibility problem of the cable...

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Problems solved by technology

[0003] 1. Add shrapnel, pressing pieces, springs or other elastic structures in the connector to contact with the metal shielding layer of the cable and then ground them. This method has higher requirements on the shielding performance of the connector, and the corresponding connector cost is relatively high. High. In addition, the maintainability of the cable is not good. Generally, after the cable passes through the connector, the elastic structure will block its metal shielding layer along the direction of the wire penetration. Once the cable is pulled out, its elastic structure will destroy the cable. metal shielding layer on

[0004] 2. Strip and bind the metal shielding layer of the cable and connect it to an independent wire as the characteristic of the shielding wire, and then connect these independent shielding wires and the shell to the common ground. Although this method can avoid the damage of the metal shielding layer, the metal shielding The binding of layers and the production of shielded wires are time-consuming and laborious

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