Connecting structure of battery box and high-voltage connector shielding ring, battery box and automobile

Abstract

The invention discloses a connecting structure of a battery box and a high-voltage connector shielding ring, a battery box and an automobile. The connecting structure of the battery box and the high-voltage connector shielding ring comprises a battery box body, a mounting hole is formed in the battery box body, and the connecting structure is characterized in that the battery box body comprises acarbon fiber inner layer, a metal middle layer and a carbon fiber outer layer; and a metal sleeve is embedded in the mounting hole and is in contact connection with the metal middle layer. Good conductor mutual communication is achieved, it is guaranteed that the contact resistance of the high-voltage connector shielding ring and the carbon fiber box body is greatly reduced, the electromagnetic shielding effect is good, and therefore it is guaranteed that a battery management system and other vehicle-mounted electronic components are not subjected to electromagnetic interference, and the accident occurrence probability is reduced.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and specifically refers to a connection structure between a battery box and a shielding ring of a high-voltage connector, a battery box and an automobile. Background technique [0002] With the increasingly stringent environmental protection requirements of various countries and the depletion of oil resources, countries have begun to pay attention to the development of electric vehicles, among which power batteries have become the focus of attention, and the requirements for the mileage of electric vehicles are also continuously increasing. Therefore, the issue of lightweight has become the focus of major manufacturers. The focus of the research, the topic of carbon fiber battery box came at the right time, using the box as a breakthrough to reduce the weight of the battery system. However, in addition to the requirements of light weight of the battery box, there are also performance requirem...

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Problems solved by technology

[0003] Although carbon fiber composite is an excellent lightweight material, carbon fiber composite is a poor conductor. The contact resistance between the shielding ring of the high-voltage connector in the battery system and the metal box is required to be less than 10mΩ. Since the shielding ring is made of metal iron If the direct contact with carbon fiber composites cannot meet this requirement, then when a large current passes through here, the shielding effect will be reduced, which will cause electromagnetic interference to the battery management system and other on-board electronic components, affecting their normal functions and easily causing Accidents, so it is necessary to innovate and improve its connection method

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