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Lithium battery protection device

A protective device and lithium battery technology, applied to secondary batteries, battery pack components, circuits, etc., can solve the problems of damage, expansion, explosion, etc. of people or objects around

Pending Publication Date: 2021-09-14
江苏润寅石墨烯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is also a certain risk of explosion in existing lithium batteries. One of the main reasons includes that the pole piece absorbs water and reacts with the electrolyte to swell, and the lithium battery will expand before it explodes. damage

Method used

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  • Lithium battery protection device

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] Such as figure 1 As shown, a lithium battery protection device includes a first casing 1 for accommodating a lithium battery, the top of the first casing 1 is empty, and a gap 2 is opened on the side wall of the first casing 1, so An explosion-proof film 3 is provided at the gap 2, and a positioning member 4 arranged laterally is provided on the inner side of the side wall of the first housing 1, and the positioning member 4 is against the lithium batte...

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Abstract

The invention discloses a lithium battery protection device which comprises a first shell for containing a lithium battery, the top of the first shell is hollow, a notch is formed in the side wall of the first shell, an explosion-proof membrane is arranged at the notch, a transversely-arranged positioning piece is arranged on the inner side of the side wall of the first shell, and the positioning piece abuts against the lithium battery contained in the first shell. A second shell is further arranged on the periphery of the first shell, a displacement sensor is arranged on the side wall of the second shell and faces the explosion-proof membrane, an air pressure sensor is arranged between the first shell and the second shell, and a cover plate is arranged above the first shell and the second shell. The multi-layer shell is arranged, the sensors are arranged on the multi-layer shell, monitoring of air expansion and pressure change in the shell is achieved, explosion of the lithium battery in the shell is prevented, meanwhile, the step-by-step alarm function is achieved through the arrangement of the explosion-proof membrane arranged on the first shell and the second explosion-proof membrane arranged on the protruding cavity of the cover plate, and the explosion prevention effect is better.

Description

technical field [0001] The invention relates to the technical field of lithium battery protection, in particular to a lithium battery protection device. Background technique [0002] Lithium batteries are a type of batteries that use lithium metal or lithium alloys as positive / negative electrode materials and use non-aqueous electrolyte solutions. However, the existing lithium batteries also have a certain risk of explosion. One of the main reasons includes that the pole piece absorbs water and reacts with the electrolyte to swell, and the lithium battery will expand before the explosion. damage. Contents of the invention [0003] The object of the present invention is to provide a lithium battery protection device with a simple structure and explosion-proof protection for the lithium battery in view of the shortcomings in the above-mentioned background technology. [0004] In order to achieve the above object, a lithium battery protective device of the present invention...

Claims

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Application Information

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IPC IPC(8): H01M50/242H01M50/244H01M50/231H01M50/289H01M50/342H01M50/317H01M10/48H01M10/613H01M10/6567
CPCH01M50/242H01M50/244H01M50/231H01M50/289H01M50/3425H01M50/317H01M10/48H01M10/613H01M10/6567Y02E60/10
Inventor 王忠超许杰欧阳春
Owner 江苏润寅石墨烯科技有限公司
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