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.
CN112018459AActive Publication Date: 2020-12-01TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2020-12-01

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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.
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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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