Polymer lithium ion battery

Abstract

The invention discloses a polymer lithium ion battery which comprises a pole group, a battery case and a pole lug, wherein the pole group is packaged in the battery case, the inner end of the pole lug is fixedly connected with an electrode of the pole group, the outer end of the pole lug extends to the outside of the battery case, and a part of the pole lug located in the battery case is bent. According to the polymer lithium ion battery disclosed by the invention, because the part of the pole lug located in the battery case is bent, a situation that the pole lug is broken under the action of a force in the drop test process of the battery can be avoided by using the buffer action of the bent part, so that the reliability of the battery is effectively improved; meanwhile, the technique can ensure that the electrical properties such as internal resistance and the like of the battery meet the requirements, thereby improving the applicability of the battery in electronic products; and then the quality qualified ratio of the battery is improved, so that the improvement of market application prospects of products of battery manufacturers is facilitated, and the polymer lithium ion battery has great production practice significance.

Description

technical field [0001] The invention relates to the technical field of battery preparation, in particular to an impact-resistant polymer lithium ion battery. Background technique [0002] At present, lithium-ion batteries have the advantages of green and pollution-free, high specific energy, good cycle performance, no memory effect, long storage time, etc., and gradually replace other traditional secondary batteries such as nickel metal hydride. , MP3 / MP4, notebooks, and IPad have been widely used. As a member of the lithium-ion battery family, compared with square lithium-ion batteries and circular lithium-ion batteries, polymer lithium-ion batteries have the advantages of higher specific energy, better safety performance, thinner thickness, and customizable arbitrary shapes. The market for high-end consumer electronics dominates. [0003] During the installation test of portable electronic products, the drop test experiment will be simulated to verify the reliability of ...

AI Technical Summary

Problems solved by technology

This process is simple and convenient, but as more and more customers of electronic products require batteries to undergo drop tests, this traditional packaging structure has been greatly challenged. During the drop test process, the tabs of the battery frequently appear to be disconnected due to force, which cannot be achieved. Pass the customer's certification requirements

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