Protective components, covers and cases

A component and protective layer technology, applied in battery pack parts, structural parts, electrical components, etc., can solve the problems of potential safety hazards in battery modules or battery packs, and achieve the effect of ensuring the safety of use and improving the safety of use.
CN110875443BActive Publication Date: 2021-06-08CONTEMPORARY AMPEREX TECH CO
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CONTEMPORARY AMPEREX TECH CO
Publication Date
2021-06-08

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Abstract

The invention relates to a protective component, a cover and a box body. The protective component is used for an energy storage device with a pressure relief element. The pressure relief element is configured as a structure that responds to the pressure increase inside the energy storage device and deforms until it explodes. The energy storage device can discharge high-temperature particles through the burst pressure relief element, and the protection The component includes: a particle blocking layer, the particle blocking layer has a receiving side for receiving high-temperature particles and a connecting side opposite to the receiving side; the particle blocking layer includes a plurality of particle blocking units with concave and convex settings, and the particle blocking unit can block high-temperature particles; An isolation protection layer is arranged on the connection side of the particle barrier layer and connected with the particle barrier layer. The protection assembly of the embodiment of the present invention can effectively intercept and block high-temperature particles, prevent high-temperature particles from melting through other structural parts corresponding to the pressure relief element, and effectively improve the use safety of the energy storage device.
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Description

technical field

[0001] The invention relates to the technical field of batteries, in particular to a protective assembly, a cover and a case. Background technique

[0002] With the development of science and technology, the requirements for high energy density of secondary batteries are getting higher and higher, and the lightweight of secondary batteries has attracted more and more attention from enterprises. It is the current development trend to increase the energy density of secondary batteries with the same volume. The battery module includes a plurality of secondary batteries, and the plurality of battery modules are packaged in the casing to form a battery pack. Currently, secondary batteries are usually provided with pressure relief components (such as explosion-proof valves). The cover of the battery module is also provided with a pressure relief element (such as an explosion-proof valve, a one-way valve or a two-way valve, etc.). When the secondary battery or ba...

Claims

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