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Sealed battery pack

A battery pack and cell technology, applied in batteries, battery pack components, secondary batteries, etc., can solve problems such as combustible gas combustion, and achieve the effect of reducing the risk of combustion

Pending Publication Date: 2020-11-20
欣旺达惠州动力新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a sealed battery pack, which aims to solve the problem that the combustible gas generated by the power battery when it encounters fresh air will burn due to excessive temperature

Method used

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Examples

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Embodiment Construction

[0027] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "the", "above" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used...

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PUM

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Abstract

The invention discloses a sealed battery pack. The sealed battery pack comprises a sealed box body and at least one heat dissipation pipeline system; a battery cell mounting cavity is formed in the closed box body; a battery cell is mounted in the battery cell mounting cavity; an inlet communicated to the battery cell mounting cavity is formed in the heat dissipation pipeline system; the heat dissipation pipeline system is provided with an outlet communicated to the external environment of the sealed box body; and the heat dissipation pipeline system is used for cooling gas released in the thermal runaway process of the battery cell. According to the sealed battery pack, in the process that gas released by thermal runaway of the battery cell enters from the inlet and moves towards the outlet, the heat of the gas is transferred to the surface of the sealed box body through the heat dissipation pipeline system, so that the temperature of the gas is gradually reduced and finally discharged out of the sealed battery pack, and the risk that the gas burns after encountering fresh air is reduced.

Description

technical field [0001] The invention relates to the battery field, in particular to a sealed battery pack. Background technique [0002] In the thermal runaway of the power battery, the high temperature will cause the decomposition of the negative electrode SEI film (solid electrolyte interface film), the decomposition of the positive electrode active material, and the oxidation of the electrolyte, which will generate a large amount of gas and heat, resulting in a sharp increase in the gas pressure inside the lithium-ion battery, causing When the battery pressure relief valve is opened, a large amount of high-temperature, flammable and toxic gases are released from the battery, which will seriously damage personal and property safety. As the size and capacity of power batteries continue to increase, the gas released from thermal runaway tends to increase exponentially. [0003] The existing power battery sealed box is generally equipped with a pressure relief and exhaust va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M10/613H01M10/6556H01M10/6561H01M2/10H01M10/0525A62C3/16
CPCH01M10/0525H01M10/613H01M10/6556H01M10/6561A62C3/16H01M2200/00Y02E60/10
Inventor 郑伟伟程志刚周冠宇李笑笑王华文王明旺
Owner 欣旺达惠州动力新能源有限公司
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