Device and method for adjusting constraining force of battery module

By using a binding force adjustment device in the battery module to monitor and adjust the binding force of the battery cells in each battery cell, the problem of excessive binding force caused by uneven expansion in the battery module is solved, and the service life of the battery module is extended.

CN119651027AActive Publication Date: 2025-03-18SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202411779247.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-03-18
Estimated Expiration
2044-12-03

AI Technical Summary

Technical Problem

In the battery module, due to the uneven expansion of the battery cells in each battery cell, the binding force of the battery cells in some battery cells is too large, which reduces the service life of the battery cell.

Method used

A battery module binding force adjustment device is used, which includes a clamping assembly, a binding force adjustment assembly, a binding force monitoring system and a controller. The strain acquisition module monitors the strain condition of each battery cell and judges the expansion rate. When the expansion rate of some battery cells is too low, the controller controls the binding force adjustment component to reduce the binding force, so that the binding force received by the battery cells in each battery cell is within an appropriate range.

Benefits of technology

By evenly adjusting the binding force of the battery cells in each battery cell, the service life of the battery module is extended, and the problem of restricted expansion of the battery cell is avoided due to excessive binding force.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention relates to the technical field of batteries, and discloses a battery module constraining force adjusting device and method.The battery module constraining force adjusting device comprises a clamping assembly, a constraining force adjusting assembly, a constraining force monitoring system and a controller; the clamping assembly comprises a first fixed clamping plate and a sliding clamping plate which are arranged at intervals in the first direction. The constraining force adjusting assembly can drive the sliding clamping plate to be close to and away from the first fixed clamping plate; the first fixed clamping plate and the sliding clamping plate are used for clamping two ends of the battery module in a first direction; the constraining force monitoring system comprises a constraining force acquisition module and a strain acquisition module, the constraining force acquisition module monitors constraining force of the sliding clamping plate and the first fixed clamping plate on the battery module, and the strain acquisition module monitors strain of the end face of each single battery; the constraining force adjusting assembly, the strain acquisition module and the constraining force acquisition module are all in communication connection with the controller.
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