Copper bar structure used for power battery connection

Abstract

The invention discloses a copper bar structure used for power battery connection. The copper bar structure comprises a copper substrate with a plurality of accommodating holes, a plurality of small copper sheets arranged on the first end plane of the copper substrate, and a plurality of small aluminum sheets arranged on the second end plane of the copper substrate, wherein the first end plane andthe second end plane are two opposite big end planes of the copper substrate; the small copper sheets, the small aluminum sheets and the accommodating holes are arranged in a one-to-one correspondencemanner; first thin and long grooves used for mounting the corresponding small copper sheets, and second thin and long grooves used for mounting the corresponding small aluminum sheets are symmetrically formed in the two sides of each accommodating hole; and the small copper sheets and the small aluminum sheets are welded on the copper substrate through welding points separately. By virtue of synchronous setting of the small copper sheets and the small aluminum sheets, the small copper sheets or the small aluminum sheets can be selected to be used according to polarity ends of a battery pack,and occurrence of an electrochemical corrosion phenomenon can be avoided, thereby ensuring cell performance.

Description

Technical field: [0001] The invention relates to the technical field of battery connection sheets, and more particularly to a copper connection sheet. Background technique: [0002] In today's society, with the improvement of people's living standards, the number of car ownership is also increasing year by year. Due to the exhaust emission caused by fuel vehicles, it is an important factor in current environmental pollution. Therefore, new energy vehicles such as electric vehicles or hybrid vehicles have emerged, which represent a development direction of future vehicles. In electric vehicles, the core is the power battery pack as the power source. At present, lithium-ion batteries have become the preferred power source due to their high energy density, safety, and small size. The single cells of the power battery pack can be connected in series or in parallel to form a power battery pack, so as to meet the various power demands of the car. The electrode terminals of eac...

AI Technical Summary

Problems solved by technology

However, the nickel plating process is complicated, pollutes the environment, is expensive, the coating is thin, and the coating has poor bonding force and poor corrosion resistance.

Images