Battery module thermal runaway early warning control method, device and system

A technology of battery module and control method, applied in battery temperature control, secondary battery, circuit and other directions, can solve the problem of not reducing thermal runaway, thermal runaway warning, etc.

Active Publication Date: 2021-11-05
东风时代(武汉)电池系统有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] Embodiments of the present invention provide a battery module thermal runaway early warning control method, device and system to solve the problem in the related art that measures cannot be taken to reduce the probability of thermal runaway and issue thermal runaway warnings before the occurrence of thermal runaway of the battery module

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  • Battery module thermal runaway early warning control method, device and system
  • Battery module thermal runaway early warning control method, device and system
  • Battery module thermal runaway early warning control method, device and system

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] Embodiments of the present invention provide a battery module thermal runaway early warning control method, device and system, which can solve the problems of taking measures to reduce the probability of thermal runaway and issuing thermal runaway warnings before the battery module thermal runaway occurs.

[0026] see figure 1 As show...

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Abstract

The invention relates to a battery module thermal runaway early warning control method. The early warning control method comprises the following steps: respectively judging whether the temperature rise rate, the voltage and the air pressure rise rate of the battery module meet corresponding preset thresholds or not; if one of the temperature rise rate, the voltage and the air pressure rise rate meets a corresponding preset threshold value, sending a first processing measure signal to the battery module, wherein the first processing measure signal indicates that the battery module is circularly cooled through the cooling liquid; and if at least two of the temperature rise rate, the voltage and the air pressure rise rate meet the corresponding preset threshold values, sending a second processing measure signal to the battery module, wherein the second processing measure signal indicates the battery module to carry out thermal runaway early warning and the battery module is poured through the cooling liquid. The probability of thermal runaway can be reduced before thermal runaway of the battery module occurs, and thermal runaway early warning can be given out in advance, so that passengers can evacuate in advance when thermal runaway occurs.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a method, device and system for early warning and control of thermal runaway of a battery module. Background technique [0002] In order to alleviate the problems of energy shortage and environmental pollution, my country has listed new energy vehicles as a strategic emerging technology industry. The electrification of automobile power system has gradually become one of the main trends in the development of future automobile technology. However, during the use of new energy vehicles, fire and explosion accidents of new energy vehicles caused by thermal runaway of power batteries occur from time to time. Therefore, the safety of power batteries, which are the core energy source of new energy vehicles, has received more and more attention. . [0003] In related technologies, it is mainly judged whether thermal runaway has occurred in the battery by detecting the volume change of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/63H01M10/6567H01M10/48
CPCH01M10/613H01M10/625H01M10/63H01M10/6567H01M10/486Y02E60/10
Inventor 黄希光朱碧霞张敏
Owner 东风时代(武汉)电池系统有限公司
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