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Fire extinguishing method of battery system and battery system

A technology of a battery system and a battery management system is applied to the fire extinguishing method of the battery system and the field of the battery system, and can solve the problems of poor safety of the battery system and the like

Active Publication Date: 2021-05-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional fire extinguishing system cannot suppress the fire of the battery very well, resulting in poor safety of the battery system

Method used

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  • Fire extinguishing method of battery system and battery system
  • Fire extinguishing method of battery system and battery system
  • Fire extinguishing method of battery system and battery system

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Experimental program
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Embodiment Construction

[0054] Embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0055] The battery system (also called battery energy storage system, or energy storage system) composed of battery cells connected in series and parallel is widely used in various scenarios that require battery system power supply, such as: electric vehicles, base station energy storage, data center backup Electricity and many other scenes. Thermal runaway, that is, combustion, may occur in the conditions of manufacturing defects and improper management of battery cells. The combustion of a single battery will release a large amount of heat. If it is not handled in time or improperly handled, it will cause the entire battery system to catch fire.

[0056] In the battery system, the thermal runaway combustion scene of the battery cell is as follows: figure 1 shown. figure 1 Among them, a battery system includes 13 single cells (cells are batteries)...

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Abstract

The embodiment of the present application discloses a battery system fire extinguishing method and the battery system, which can improve the safety of the battery system. The battery system in the embodiment of the present application includes a battery management system BMS, a battery module, a gas sensor and a fire extinguishing device. The BMS receives the concentration value of flammable and explosive gas collected by the gas sensor from the gas sensor, and determines the target gas sensor with safety risk and the risk level of the target gas sensor according to the concentration value of the flammable and explosive gas. When the risk level of the target gas sensor When the first risk alarm value is exceeded, the fire extinguishing device corresponding to the target gas sensor is activated, and the fire extinguishing device sprays fire extinguishing gas to the battery module corresponding to the target gas sensor. This application uses gas sensors to monitor flammable and explosive gases, and extinguishes fires through fire extinguishing gas, which can prolong the warning time, seize the best fire extinguishing opportunity, and reduce the combustion probability of the system, thereby improving the safety of the battery system.

Description

technical field [0001] The present application relates to the field of energy storage systems, in particular to a battery system fire extinguishing method and the battery system. Background technique [0002] The battery energy storage system uses batteries (such as lithium-ion batteries) as energy storage units. The active material inside the battery is chemically active, and it is prone to thermal runaway under the condition of abuse or manufacturing defects, and then burns or explodes, which easily causes loss of life and property. [0003] Battery energy storage systems generally have the functions of charge and discharge management, state estimation, thermal management, battery fault diagnosis and safety protection. Among them, the safety protection function needs to ensure the safety of personnel and equipment when the battery is in thermal runaway. [0004] At present, the battery combustion alarm and fire extinguishing method in the battery energy storage system is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/48A62C3/16A62C5/00A62C37/36G01R31/382G01N33/00
CPCA62C3/16A62C5/006A62C37/36H01M10/4207H01M10/425H01M10/482Y02E60/10
Inventor 杨同欢蔡兵司淑坤
Owner HUAWEI TECH CO LTD
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