Protection structure for soft package storage battery and soft package storage battery
A technology for protecting structures and storage batteries, applied to secondary batteries, structural parts, battery pack components, etc., can solve problems such as serious volume expansion and contraction effects, frequent safety accidents, poor high-temperature safety, etc., and achieve volume expansion and reduce Safety accidents, effects of reducing surface temperature
Pending Publication Date: 2020-03-27
ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD +1
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Problems solved by technology
[0004] However, while soft-pack lithium-ion batteries have the advantage of high energy density, they also have disadvantages such as serious volume expansion and contraction effects, easy deformation, short-circuit prone to spontaneous combustion, and poor high-temperature safety, which lead to frequent safety accidents during use.
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[0029] Some specific implementations of the present invention will be described below with reference to the drawings and examples. Those skilled in the art will understand that the purpose of providing these embodiments is only to illustrate how the solutions of the present invention can be implemented, but not to limit the scope of the present invention in any way.
[0030] Such as figure 1 As shown, the present invention provides a protective structure for a soft-pack battery, which includes: an inner protective sheet 1 , an isolation layer 2 and an outer protective sheet 3 that surround the outer periphery of the bare cell 5 and are sequentially arranged from inside to outside.
[0031] The structure can be applied to traditional liquid lithium battery systems, polymer battery systems, solid-state battery systems and mixed solid-liquid electrolyte lithium battery systems. In one embodiment, the bare cell 5 is a traditional liquid battery core, a polymer battery core, a sol...
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Abstract
The invention relates to a protection structure for a soft package storage battery and the soft package storage battery. The protection structure comprises an inner-layer protection sheet, an isolation layer and an outer-layer protection sheet which surround the periphery of a battery cell of the storage battery and are sequentially arranged from inside to outside, wherein the isolation layer is formed by PP, PE or a combination of PP and PE. The invention also relates to a soft package storage battery with the protection structure. By utilizing the protection structure, the safety performanceof the battery under a high-temperature condition can be improved, the mechanical abuse resistance of the battery can be improved, the thickness of the battery cell can be fixed, and the volume expansion of the battery cell can be inhibited, so that the prepared soft package storage battery has good safety performance.
Description
technical field [0001] The invention relates to the field of making soft-pack batteries, and more particularly relates to a protective structure for soft-pack batteries and the soft-pack batteries. Background technique [0002] In recent years, with the development of new energy vehicles, artificial intelligence, unmanned driving, 5G communication and other technologies, higher and higher requirements have been placed on energy storage technology. Lithium-ion batteries have attracted the attention of academia and industry because of their high energy density and cycle efficiency, low self-discharge, and no memory effect. At present, lithium-ion battery technology has become increasingly mature, and its energy density has been continuously improved, and it has been widely used in various consumer electronics products, power tools, electric vehicles and other fields. [0003] At present, lithium-ion batteries are mainly divided into steel-cased lithium-ion batteries, aluminum...
Claims
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IPC IPC(8): H01M2/02H01M2/34H01M10/613H01M10/6554
CPCH01M10/613H01M10/6554H01M50/124H01M50/581Y02E60/10
Inventor 许晓雄刘冀鹏张永龙
Owner ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD