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A detection system and method for cell swelling force

A battery and a technology to be tested, which is applied to measuring devices, measuring fluid pressure, and measuring fluid pressure through mechanical components, etc., can solve large errors, inaccurate methods of detecting the bulging force of the battery, and cannot reflect the real bulging of the battery Force and other issues to achieve the effect of reducing errors and measurement errors

Active Publication Date: 2021-05-28
NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method of detecting the bulging force of the battery cell is not accurate, and cannot reflect the real bulging force of the battery cell during the actual charging and discharging process, and there is a large error

Method used

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  • A detection system and method for cell swelling force
  • A detection system and method for cell swelling force

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Embodiment Construction

[0033] In the existing technical solutions for measuring the bulging force of the battery cell, pressure is usually applied to the deformed battery cell, so that the battery cell returns to the state before the cell deformation under the action of this pressure, and the process is regarded as It is the inverse process of the bulging deformation of the battery cell, so that the pressure applied to the battery cell can be used as the bulging force generated when the battery cell is bulging and deforming.

[0034] However, the inventors have found through research that this method of measuring the bulging force of the battery core is not a direct measurement of the real bulging force of the battery core itself, but a reverse process of bulging deformation of the battery core by simulating the inverse process of the battery core bulging The size of the bulging force generated at the time. However, in the actual verification process, the bulging force obtained by this reverse calcu...

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Abstract

The present application discloses a detection system and method for the bulging force of the battery cell, the system includes: the battery cell to be tested, a pressure sensor and a test tool; wherein, the pressure sensor is used to measure the charging and / or discharging process of the battery cell to be tested The bulging force in the test tool is used to fix the relative position of the cell to be tested and the pressure sensor, so that the bulging force generated by the cell to be tested can be detected by the pressure sensor. It can be seen that after using the test tool to fix the relative position between the pressure sensor and the cell to be tested, the pressure sensor can detect the actual bulging force generated by the cell to be tested during the charging and / or discharging process, compared with the existing The bulging force derived from the inverse process of simulating the bulging process of the battery cell is more accurate, thereby reducing the error of the detected bulging force of the battery cell.

Description

technical field [0001] The present application relates to the technical field of cell detection, in particular to a detection system and method for cell swelling force. Background technique [0002] In the process of charging or discharging the battery, the battery cell in the battery may generate corresponding chemical gas during the chemical reaction of charging and discharging, which makes the battery cell bulge and deform to a certain extent, so that there is an external bulging force. In the process of structural design of a battery module including multiple cells, the structure of the battery module is usually designed in combination with the bulging force of the cells to reduce the impact of the bulging force of the cells on the structure of the battery module. influences. [0003] In the existing technical solutions for measuring the bulging force of the battery cell, usually after the bulging deformation of the battery cell occurs, a pressure in the direction oppos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L7/00G01L19/00
CPCG01L7/00G01L19/00
Inventor 田瑞生刘博渊匡硕林辉
Owner NEUSOFT REACH AUTOMOBILE TECH (SHENYANG) CO LTD