Power battery, thermal diffusion protection method of power battery and vehicle

A technology of power battery and explosion-proof valve, which is applied in the field of vehicles, can solve the problems of irregular flow of power battery, breaking through the shell, and occurrence of danger, and achieves the effect of improving chain reactions such as high-voltage short circuit, improving safety, and improving diffusion effect.

Active Publication Date: 2021-04-13
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the thermal runaway of the internal module of the power battery occurs, the gas inside the power battery will accumulate and flow irregularly inside the power battery. When the gas accumulates too much, it will break through the casing and cause danger.

Method used

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  • Power battery, thermal diffusion protection method of power battery and vehicle
  • Power battery, thermal diffusion protection method of power battery and vehicle
  • Power battery, thermal diffusion protection method of power battery and vehicle

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Embodiment Construction

[0032] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0033] Such as Figure 1-Figure 4 As shown, this embodiment provides a power battery for a vehicle, the power battery includes a casing and a module assembly placed in the casing, the casing includes an upper cover 11 and a bottom plate 12 that are interlocked, and the module assembly It consists of a plurality of modules 13 that are electrically conn...

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Abstract

The invention relates to the technical field of vehicles, and discloses a power battery, a thermal diffusion protection method of the power battery and a vehicle. The power battery comprises a shell and a module assembly arranged in the shell, the shell comprises an upper cover and a bottom plate which are buckled with each other, the module assembly comprises a plurality of modules which are electrically connected with each other, an explosion-proof valve is arranged on the upper cover or the bottom plate, the power battery further comprises a fireproof assembly, an exhaust passage and an insulating assembly, and the fireproof assembly is arranged between the module assembly and the upper cover; an exhaust passage communicated with the explosion-proof valve is formed between the edge of the module assembly and the inner side wall of the shell; the insulating assembly is arranged between two adjacent modules. The fireproof assembly can be used for preventing gas from breaking through the upper cover during thermal runaway; the exhaust assembly is used for guiding the gas, so that the gas flows out of the power battery through the exhaust assembly and the explosion-proof valve; meanwhile, the insulating assembly arranged between the two adjacent modules can effectively improve chain reactions such as high-voltage short circuit and the like in the module assembly when the power battery is in thermal runaway.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a power battery, a thermal diffusion protection method for the power battery and a vehicle. Background technique [0002] As the core component of electric vehicles, the safety of power batteries is crucial to the safety of electric vehicles. [0003] In the prior art, when the internal module of the power battery is thermally out of control, the gas inside the power battery will accumulate and flow irregularly inside the power battery. When the gas accumulates too much, it will break through the casing and cause danger. [0004] Therefore, there is an urgent need for a power battery to solve the above problems. Contents of the invention [0005] Based on the above, the object of the present invention is to provide a power battery, a thermal diffusion protection method for the power battery and a vehicle, which have higher safety when thermal runaway occurs. [0006] For rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/317H01M50/383H01M50/358H01M50/586
CPCY02E60/10H01M50/358H01M50/586H01M50/383H01M50/317
Inventor 杨明符运喜冯先振韩金磊
Owner CHINA FIRST AUTOMOBILE
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