Polymer lithium ion battery

A technology of lithium-ion batteries and polymers, applied in secondary batteries, battery components, circuits, etc., can solve problems such as failure to pass customer certification requirements, battery disconnection, etc., to improve market application prospects, improve applicability, The effect of improving the quality pass rate

Inactive Publication Date: 2013-03-20
TIANJIN LISHEN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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  • Polymer lithium ion battery
  • Polymer lithium ion battery
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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] Such as figure 1 As shown, the polymer lithium ion battery of the first embodiment of the present invention includes an electrode group 1, a battery casing 2 that encapsulates the electrode group, and a battery whose inner end is fixedly connected to the electrodes of the electrode group and whose outer end extends to the outside of the battery casing. The tab 3, where at the front edge of the battery, the positive and negative tabs protrude from the middle of the thickness direction of the pole group, first bend upward at an angle of 45° and extend to the front of the upper surface of the pole group, then bend downward at an angle of 45° and extend to the pole. The front of t...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/26H01M10/0525
CPCY02E60/122Y02E60/10
Inventor 刘刚程君王玉虎刘侨李团伟李莎莎
Owner TIANJIN LISHEN BATTERY
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