Energy storage devices and power systems

By using restraint components to limit and guide the tabs in the energy storage device, the problem of long cells swaying and bending inside the casing is solved, thereby improving structural stability and electrical performance.

CN122091937BActive Publication Date: 2026-06-30XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAMEN HITHIUM ENERGY STORAGE TECHNOLOGY CO LTD
Filing Date
2026-04-21
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

As the length of secondary battery cells increases, the tabs become more prone to shaking inside the casing, resulting in poor structural stability. Furthermore, the tabs are easily bent or damaged during assembly, affecting the battery's electrical performance and safety.

Method used

The design employs a restraint component, which uses through holes and protrusions to limit and guide the tabs, ensuring that the tabs bend in an orderly manner, avoiding contact with the housing, and improving structural stability and electrical connection reliability.

Benefits of technology

This effectively prevents the tabs from bending and being damaged during assembly, improves the structural stability and electrical performance of the energy storage device, reduces assembly difficulty, and ensures the stability and safety of the electrical connection.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN122091937B_ABST
    Figure CN122091937B_ABST
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Abstract

This application relates to an energy storage device and an electrical system. The energy storage device includes: a housing, an electrode assembly, an end cap assembly, and a restraining member. The housing has a receiving cavity; the electrode assembly is disposed within the receiving cavity and includes multiple electrically connected tabs and electrode bodies, which are arranged along a first direction; the end cap assembly is disposed on one side of the housing for sealing the receiving cavity; the restraining member is located between the end cap assembly and the electrode bodies; the restraining member has a through hole that penetrates two opposing surfaces of the restraining member along the first direction; the through hole extends along a second direction, and the multiple tabs pass through the through hole, wherein the first direction and the second direction intersect; the through hole has a first sidewall and a second sidewall disposed opposite each other along the second direction, and the distance between the first sidewall and the second sidewall along the second direction is greater than the size of the ends of the multiple tabs near the electrode bodies.
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