Battery overcharge internal air pressure measuring method based on implantable air pressure sensor

By implanting a pressure sensor in the battery, real-time monitoring of changes in the internal air pressure of the battery and early warning when the safety threshold is reached, the problems of slow response time and high cost of battery internal air pressure measurement in the prior art are solved, and high-precision and low-cost real-time monitoring and early warning are achieved.

CN119716593APending Publication Date: 2025-03-28DATANG ENVIRONMENT IND GRP
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Patent Information

Application Number
CN202411727672.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing internal air pressure measurement methods of batteries have problems such as slow response time, easy wear, poor long-term stability, high cost and complex installation, and it is difficult to achieve real-time and continuous monitoring of air pressure changes.

Method used

The battery overcharge internal air pressure measurement method is used based on an implanted air pressure sensor. By completely discharged the battery, the internal air pressure change is measured in real time using a data recorder and a air pressure sensor connected to the battery, and an early warning is made when the air pressure reaches the safety threshold.

Benefits of technology

It realizes high-precision and low-cost real-time monitoring of the internal air pressure of the battery, timely warning, and improves the reliability of battery safety detection and early warning.

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Abstract

The invention provides a battery overcharge internal air pressure measurement method based on an implantable air pressure sensor, and the method comprises the following steps: S1, carrying out the full discharge of a battery, and carrying out the standing of the battery, and eliminating the residual electric quantity; s2, the battery is communicated with the signal input end of the air pressure sensor, and the communication position is located between the largest side face of the battery and an anti-explosion valve of the battery; the signal output end of the air pressure sensor is connected with the data recorder; s3, wrapping and sealing the battery; s4, performing constant-current charging on the battery until the battery is fully charged; and the internal air pressure of the battery is recorded through the data recorder in the charging process. According to the scheme, after the battery is completely discharged, constant-current charging is carried out, and meanwhile, the data recorder is connected with the air pressure sensor connected with the battery, so that the internal air pressure change of the battery in the charge-discharge cycle process is monitored in real time; and when the air pressure sensor detects that the internal air pressure reaches a safety threshold value in the overcharge process of the battery, early warning is carried out in time.
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