Detection system and detection control method for bump deformation of electrochemical device

By using signal acquisition technology to detect deformation in electrochemical devices and using the BMS control unit to cut off the system input or output in real time, the safety hazards caused by excessive deformation of electrochemical devices are solved, and effective detection and control of the deformation of electrochemical devices are achieved.

CN119695317APending Publication Date: 2025-03-25SHANGHAI BAICHENG ELECTRONICS
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Patent Information

Application Number
CN202411837159.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-13
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The prior art is difficult to effectively detect and control safety hazards such as smoke, overheating, short circuit, and fire caused by excessive deformation during use of electrochemical devices.

Method used

The deformation of the soft-pack battery cell or battery module is detected by signal acquisition. Through the synergy between the elastic unit and the conductive unit, the deformation is converted into a quantifiable signal and fed back to the BMS control unit in real time. When the deformation reaches the set value, the input or output of the system is cut off to avoid safety hazards.

Benefits of technology

Real-time detection and control of the deformation of the electrochemical device is realized, safety hazards caused by excessive deformation are avoided, and safety and reliability of the electrochemical device are improved.

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Abstract

The invention provides a detection system and a detection control method for bump deformation of an electrochemical device. The detection system comprises: an electrochemical device comprising a housing and at least one cell located in the housing; the first elastic unit is attached to the surface, close to the shell side, of the battery cell and is used for feeding back deformation of the electrochemical device; the first conductive unit is connected with the first elastic unit, is attached to the surface of the battery cell on the same side of the first elastic unit, and is used for transmitting the deformation of the electrochemical device; the deformation acquisition unit is located at the position, corresponding to the first conductive unit, of the outer surface of the shell and used for acquiring the deformation quantity of the electrochemical device; the BMS control unit is located on the outer surface of the shell, connected to the deformation acquisition unit and used for controlling input and output of electric signals in the electrochemical device. According to the detection system provided by the invention, potential safety hazards such as smoking, overheating, short circuit and fire outbreak of the electrochemical device caused by overlarge deformation quantity are prevented.
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