A high-efficiency high-rate lithium battery structure

Abstract

The invention relates to a high-efficiency and high-rate lithium battery structure. It solves the problems that the general lithium battery tab conducts electric energy through the welding pole, the welding process is difficult, the welding point affects the conduction efficiency of the lithium battery, and the discharge rate of the lithium battery is limited. The battery structure includes a cover, and an electrode-taking ear is arranged under the cover. The front-end part of the electrode-taking ear passes through the cover and is located on the surface of the cover. The insulating layer is wrapped on the electrode-taking ear. External terminals are formed on the upper surface of the insulating layer on the cover. The advantage of the invention is that the electrode ear is taken in an integrated design, which solves the problem of the process bottleneck of the existing lithium battery welding at these two places, increases the discharge rate of the lithium battery, and reduces the resistance and resistance caused by the welding point during high current discharge. Fever condition. The tab insulation layer directly wraps the electrode tab, which produces good sealing and insulation with the battery cover. The overall structure is simple, and the manufacturing process, manufacturing time and material cost of the lithium battery are reduced.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a high-efficiency and high-rate lithium battery structure that does not require welding of tabs and reduces manufacturing processes, manufacturing time, and manufacturing costs. Background technique [0002] With the continuous improvement of society's energy-saving and environmental protection requirements, electric vehicles have become the development direction of modern automobile industry technology. The current power source of electric vehicles is mainly based on the way of storing electric energy. The technology of storing electric energy with the background of current science and technology is being updated day by day. Among them, lithium battery technology has become the main direction of electric vehicle storing electric energy due to its excellent performance. [0003] At present, the existing lithium battery power-taking method in the market is basically that the bat...

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Problems solved by technology

[0005] The present invention mainly solves the problems in the prior art that the tabs of the general lithium battery conduct electric energy through the welding pole, the welding process is difficult, the solder joints affect the conduction efficiency of the lithium battery, and the discharge rate of the lithium battery is limited, and it provides a tab that does not require welding. , reduce the production process, production time, production cost of high-efficiency high-rate lithium battery structure

In the present invention, the electrode ear is designed to be integrated, and there is no need to use poles to weld and connect the electrode ear at the lower part of the cover and the external terminal of the cover, which solves the problem of the existing lithium battery welding process bottleneck at these two places, and increases Improve the discharge rate of the lithium battery, reduce the resistance and heat caused by the welding point during high current discharge

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