Battery

By bonding tension bands to the bottom and sidewalls of individual lithium-ion battery cells and using material locking connections, the problems of uneven cooling and adhesive failure in the modular construction of lithium-ion batteries are solved, resulting in higher battery reliability and extended service life.

CN113206331BActive Publication Date: 2026-04-03ROBERT BOSCH GMBH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-01-29
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

In existing lithium-ion batteries with modular construction, there are problems with uneven cooling and binder failure under high stress in the thermal management system, which leads to unreliable cooling of individual cells and affects battery life and reliability.

Method used

A thermally conductive adhesive is used to bond the tensioning band to the bottom and sidewalls of the battery cell, combined with the material locking connection between the tensioning band and the end plate, providing a second load path, reducing the stress on the adhesive and increasing the expansion force transmission capability of the battery cell.

Benefits of technology

It improves the cooling reliability of individual battery cells and the lifespan of the binder, reduces the risk of binder failure, extends battery life, and reduces costs.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN113206331B_ABST
    Figure CN113206331B_ABST
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Abstract

This invention relates to a battery (100), particularly a lithium-ion battery, comprising: a plurality of individual battery cells (10) interconnected to form a cell group and housed in a housing (20), wherein the individual battery cells (10) are bonded to the bottom (21) of the cell housing (20) by a thermally conductive adhesive (TIM); a plurality of spacer elements (11), wherein one of the spacer elements (11) is arranged between each two adjacent individual battery cells (10); two end plates (22) that constrain the cell group at their ends, wherein the end plates (22) are connected by at least one tension band (23), wherein the at least one tension band (23) at least partially surrounds the cell group on its periphery. According to the invention, the at least one tension band (23) is bonded to the sidewall of the individual battery cell (10) by an adhesive.
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Citation Information

Patent Citations

  • Battery module with cell fixation

    CN107078243A

  • Power supply device, and vehicle having the same

    JP2012181970A

  • Power source system

    WO2014050109A1