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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.

Active Publication Date: 2021-06-08
CONTEMPORARY AMPEREX TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the battery module or battery pack will pose a safety hazard

Method used

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  • Protective components, covers and cases
  • Protective components, covers and cases
  • Protective components, covers and cases

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0042] see Figure 1 to Figure 6 As shown, the particle blocking layer 110 included in the protection assembly 100 of this embodiment is a network structure with a predetermined thickness. Each particle blocking unit includes a hole 111 extending in the thickness direction of the particle blocking layer 110 and a grid 112 surrounding the hole 111. The hole 111 is a concave portion of the particle blocking unit, and the grid 112 is a convex portion of the particle blocking unit, so that the particle blocking unit is configured as a structure with concave and convex. The hole walls of the holes 111 and / or the grid 112 can be used to block high-temperature particles or enrich high-temperature particles, so as to achieve the function of intercepting and blocking high-temperature particles.

[0043] In one embodiment, the grid 112 may be a connection between two adjacent holes 111 . The hole wall of the hole 111 and the grid 112 can form an interception effect on the high-tempera...

Embodiment 1

[0063] The particle blocking unit included in the particle blocking layer 110 of this embodiment is a network structure. The hole 111 comprised by the particle blocking unit has an aperture r ranging from 0.038 mm to 4.75 mm. The particle blocking layer 110 is made of barbed wire. The thickness of the isolation protection layer 120 ranges from 0.5mm to 10mm, and its material is melamine foam. The protection assembly 100 of this embodiment includes the above-mentioned particle barrier layer 110 and isolation protection layer 120. The protective assembly 100 of this embodiment is tested in practice, and when the pressure relief element 92 bursts, the cover of the battery module 90 or the case of the battery pack will not melt through.

Embodiment 2 to 13

[0065] Embodiments 2 to 13 are different from some parameters of Embodiment 1, but can achieve the same technical effect. The protective assembly 100 of various embodiments has been tested in practice. When the pressure relief element 92 bursts, the cover of the battery module 90 or the case of the battery pack will not melt through. See Table 1 for details:

[0066] Table 1

[0067]

[0068] In addition, the protection test of the protection assembly 100 of the embodiment of the present invention:

[0069] Fully charge the battery module 90 or the battery pack. The pressure relief element 92 of the secondary battery 91 is facing the cover of the battery module 90, and the pressure relief element 92 of the battery module 90 is facing the box of the battery pack or the pressure relief element of the secondary battery 91 included in the battery module. 92 is facing the casing of the battery pack. Then trigger the secondary battery 91 out of control with heating, acupunctu...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/30H01M50/147H01M50/10
CPCH01M50/10H01M50/147H01M50/30H01M2200/00Y02E60/10H01M50/392H01M50/325H01M50/383H01M50/394H01M50/24H01M50/3425H01M50/148H01M2200/20
Inventor 吴凯沈聃陈小波陈世龙
Owner CONTEMPORARY AMPEREX TECH CO
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