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Suppression structure for thermal failure diffusion of battery system, determination method of inhibition structure and battery system

A battery system, thermal failure technology, applied in the direction of battery, secondary battery, secondary battery repair/maintenance, etc.

Active Publication Date: 2020-12-01
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, it is necessary to provide a battery system thermal failure diffusion suppression structure and its determination method for how to improve the safety of power batteries, and a battery system

Method used

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  • Suppression structure for thermal failure diffusion of battery system, determination method of inhibition structure and battery system
  • Suppression structure for thermal failure diffusion of battery system, determination method of inhibition structure and battery system
  • Suppression structure for thermal failure diffusion of battery system, determination method of inhibition structure and battery system

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Embodiment Construction

[0057]In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.

[0058] The serial numbers numbered for components in this document, such as "first", "second", etc., are only used to classify the described objects and do not have any sequence or technical meaning. The "connection" and "connection" mentione...

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Abstract

The invention relates to a suppression structure for thermal failure diffusion of a battery system, a determination method thereof and the battery system. The suppression structure for thermal failurediffusion of the battery system comprises a shell, a chemical inhibitor and a lead. The chemical inhibitor is used for inhibiting the redox reaction during thermal failure of the battery, so that theheat release of the thermal failure of the battery monomer is weakened fundamentally, and the thermal failure of other battery monomers caused by the thermal failure of the battery monomer is avoided. And the lead is exposed out of the shell and can be in contact with the single battery subjected to thermal failure at first. And after the lead is triggered, the chemical inhibitor connected with the lead is triggered and is used for inhibiting the oxidation-reduction reaction during thermal failure of the battery. The chemical inhibitor and the lead in the inhibition structure for thermal failure diffusion of the battery system act together, so that the safety of the battery system is improved. The suppression structure for thermal failure diffusion of the battery system has important value for safety design of a high-specific-energy power battery.

Description

technical field [0001] The present application relates to the field of battery technology, in particular to a structure for suppressing thermal failure diffusion of a battery system, a determination method thereof, and a battery system. Background technique [0002] The safety of power batteries is one of the most concerned issues in the field of battery technology. The safety of general power batteries includes the safety of the battery cell level and the safety of the battery system level. At the level of battery cells, the thermal stability of battery cells is decreasing and approaching the safety boundary under normal use conditions. Traditional safety assessment tests have increasingly stringent requirements for new battery cells, and the industry is seeking safety solutions at the battery system level. [0003] At the battery system level, the main safety issue is that if a battery cell fails, it may spread to the surrounding battery cells and cause thermal failure o...

Claims

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Application Information

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IPC IPC(8): H01M10/42H01M10/0525H01M10/0587A62C3/16
CPCH01M10/4207H01M10/42H01M10/0525H01M10/0587A62C3/16H01M2200/10Y02E60/10Y02P70/50
Inventor 冯旭宁徐成善王贺武欧阳明高卢兰光
Owner TSINGHUA UNIV
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