Device and method for detecting expansion force of winding core

By designing a core expansion force detection device including a membrane member and a pressure detection member, the problem of low reliability of the detection cell expansion force in the prior art is solved, and higher detection reliability and data accuracy are achieved.

CN119756654APending Publication Date: 2025-04-04CHONGQING FUDI BATTERY RES INST CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202410870474.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-06-28
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

In the prior art, the reliability of detecting expansion force of the battery cell is low, mainly because the components inside the cylindrical device are susceptible to corrosion by the electrolyte.

Method used

A detection device for core expansion force is designed, including a membrane member and a pressure detector. The membrane member is closely connected to the outer peripheral surface of the roll core, and has a closed accommodating cavity suitable for filling the electrolyte. The pressure detector is arranged around the outer peripheral surface of the roll core and closely connected to the outer peripheral surface of the film member to avoid corrosion by the electrolyte.

Benefits of technology

Through this device, the reliability of detecting the expansion force of the battery cell is improved, and the stability of the pressure detector and the accuracy of data are ensured.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119756654A_ABST
    Figure CN119756654A_ABST
Patent Text Reader

Abstract

A device for detecting the expansion force of a winding core and a method for detecting the expansion force of a winding core. The detection device includes a membrane member and a pressure detection member. The membrane member is in close contact with at least part of the outer circumference of the winding core. The membrane member has a closed accommodating cavity, which is suitable for filling with an electrolyte. The winding core is placed in the accommodating cavity and immersed in the electrolyte. The positive and negative lead-out members of the winding core extend out of the accommodating cavity so as to be energized for detection. The pressure detection member is arranged around the outer circumference of the winding core and is in close contact with the outer circumference of the membrane member. The present application improves the reliability of detecting the expansion force of the battery cell.
Need to check novelty before this filing date? Find Prior Art