Elastic end plate for battery module, battery module, and battery pack

By using an elastic end plate structure formed by an elastic device between the inner and outer side plates in the all-solid-state battery module, the problem of stress loss under high pressure of traditional foam is solved, achieving stable rebound force and uniform stress distribution, thereby improving the performance and lifespan of the battery module.

CN224384390UActive Publication Date: 2026-06-19SHANGHAI XUANYI NEW ENERGY DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI XUANYI NEW ENERGY DEV CO LTD
Filing Date
2025-05-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional foam exhibits significant stress loss and decreased resilience under the high pressure of all-solid-state batteries, failing to meet the requirements for long-term stable pressure application.

Method used

The structure adopts an elastic end plate structure consisting of an inner plate and an outer plate. An elastic device is installed between the inner and outer plates to provide rebound force, replacing the traditional buffer foam. This ensures that the pressure-deformation curve of the battery module matches the ideal curve, and the elastic device does not directly act on the individual battery cells.

Benefits of technology

It effectively solves the problem of stress loss in traditional foam under high pressure, provides stable resilience, enhances the structural stability of the battery module and the uniform stress state of the individual cells, and improves the overall performance and lifespan of the module.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224384390U_ABST
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Abstract

This invention provides an elastic end plate for a battery module, a battery module, and a battery pack. The elastic end plate for the battery module includes: an inner plate (1); an outer plate (2) disposed outside the inner plate (1) and spaced apart from it, the distance between the inner plate (1) and the outer plate (2) being adjustable; and an elastic device (3) disposed between the inner plate (1) and the outer plate (2), the first end of the elastic device (3) elastically abutting against the inner plate (1), and the second end of the elastic device (3) elastically abutting against the outer plate (2). The elastic end plate for the battery module of this invention effectively solves the problem that traditional foam often exhibits significant stress loss and decreased resilience under this pressure, failing to meet the requirements for long-term stable pressure application.
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