Battery fire early warning system and method

A fire warning and battery management system technology, applied in the field of battery fire warning system, can solve problems such as single detection mode and failure of battery fire warning

Pending Publication Date: 2018-11-06
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a battery fire warning system that can realize battery fire warning from multiple angles in view of the fact that the current battery fire warning method and system detection mode is relatively single and cannot comprehensively give battery fire warning from multiple angles. Early warning system and method

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0028] In order to make the purpose, technical solution and advantages of the present application clearer, the solar chip battery detection equipment of the present application will be further described in detail through the following embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.

[0029] The serial numbers assigned to components in this document, such as "first", "second", etc., are only used to distin...

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Abstract

The invention provides a battery fire early warning system and method. A first detector is used for detecting electrolyte or carbon cigarette pellets and the like released when battery cells are aboutto or already cause thermal runaway. A second detector is used for detecting shape change when multiple battery cells are about to or already cause thermal runaway. A third detector is used for detecting the vibration frequency of noise generated by air jet in the battery ejection process when the multiple battery cells are about to or already cause thermal runaway. Each of fourth detectors is used for detecting temperature or surface strain force on the surface of each battery cell, or extrusion force change between two adjacent battery cells. According to the battery fire early warning system, battery fire early warning can be realized from multiple aspects such as images, gas, sound, temperature, surface stress, extrusion force and the like, false alarm or missing alarm of fire is avoided, the safety of the battery in the fire early warning aspect is improved, and the losses of life and property are avoided.

Description

technical field [0001] The present application relates to the safety of lithium-ion batteries, in particular to a battery fire warning system and method. Background technique [0002] In recent years, the market share of electric vehicles has steadily increased. Lithium-ion batteries have excellent performances such as high voltage, high specific energy, long cycle life, and no pollution to the environment. They have attracted great attention from the electric vehicle industry and have gained certain applications. However, flammable mixtures such as H 2 , CO, CH 4 etc., and accumulate inside the battery. After the battery reaches a certain pressure limit, the safety valve opens, and the combustible mixture is released into the external environment as the battery erupts. [0003] Since the high-temperature surface of the battery and the temperature of Mars are much higher than the ignition temperature of the gaseous eruption, once the eruption is sprayed in the air and co...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B17/10G08B17/06G01D21/02
CPCG08B17/06G08B17/10G01D21/02
Inventor 李伟峰王贺武欧阳明高张亚军李成李建秋卢兰光韩雪冰杜玖玉
Owner TSINGHUA UNIV
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