Battery cell module, battery module and battery pack
By employing a dynamic pressure balancing mechanism constructed with elastic devices and springs in the all-solid-state battery, the problems of stress loss and decreased resilience performance of traditional foam under high pressure are solved, achieving stable constraint and efficient thermal management of the cell module, and improving battery performance and lifespan.
Patent Information
- Application Number
- CN202520922878.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-01
- Estimated Expiration
- 2035-05-09
AI Technical Summary
Traditional foam materials exhibit 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.
An elastic device is used, including a first side plate and a second side plate arranged along the expansion direction of the battery cell, and multiple springs in between, to construct a dynamic pressure balance mechanism. The stable elastic coefficient and good rebound performance of the springs are used in conjunction with the sealed shell to achieve precise pressure regulation and efficient thermal management.
Under pressures as high as 1–20 MPa, the system ensures that individual cells maintain stable constraint forces during thousands of charge-discharge cycles, thereby improving the thermal stability and mechanical reliability of the cell module and extending the lifespan and performance of the all-solid-state battery.