Device for testing bonding effect of glued diaphragm and pole piece

By designing a testing device for the bonding effect of the coated separator and the electrode sheet, and using a servo motor and lead screw assembly to achieve precise positioning and clamping of the preform, the problem of difficulty in evaluating the cell shaping effect in the existing technology is solved, thereby improving the optimization of lithium battery cell manufacturing process and product quality.

CN120992482APending Publication Date: 2025-11-21HEFEI GUOXUAN HIGH TECH POWER ENERGY
1 Cites 0 Cited by

Patent Information

Application Number
CN202511118151.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-11
Publication Date
2025-11-21

AI Technical Summary

Technical Problem

Existing technologies lack effective testing equipment to evaluate and predict the compaction density of positive and negative electrode sheets, the adhesion force between the separator and the electrode sheets, and the impact of different hot pressing processes on cell shaping, which limits the optimization of lithium battery cell manufacturing processes and the improvement of product quality.

Method used

A device for testing the bonding effect between a coated diaphragm and an electrode sheet was designed, including an upper pressure support assembly, a lower pressure assembly, and a platform control assembly. A servo motor and a lead screw assembly are used to achieve precise positioning and clamping of the preform, simulating the stress state of the battery cell in different processes, and the test is carried out by applying pressure through a press.

Benefits of technology

This technology enables a comprehensive evaluation of the bonding effect between the coated diaphragm and the electrode sheet. The test results are closer to actual production needs, improving the accuracy and stability of the test, simplifying the operation process, and reducing equipment costs.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a gluing diaphragm and pole piece bonding effect testing device, which comprises an upper pressing support assembly, a lower pressing assembly and a platform control assembly, and is characterized in that the upper pressing support assembly is used for supporting a prefabricated body participating in a test; the downward pressing assembly follows the press machine and applies downward pressure to the prefabricated body supported by the upward pressing supporting assembly; the platform control assembly regulates and controls the upper pressing supporting assembly to support the prefabricated body through the shaft connecting assembly and fixes the position of the prefabricated body. According to the invention, the gluing diaphragms and the pole piece preforms are used as test workpieces to be placed on the upper pressing support assembly, centering and clamping of the workpieces can be controlled through the servo control mobile platform according to the gluing diaphragms and the pole piece preforms with different models and sizes, and the lower pressing assembly applies pressure downwards; the yield force value of the glued diaphragm and the pole piece preform is tested, the bonding effect of the glued diaphragm and the pole piece is tested, and a test basis is provided for optimization of a battery cell manufacturing process.
Need to check novelty before this filing date? Find Prior Art