Busbar, battery module and electric device

By designing a busbar with an arched bridge connection, the problem of insufficient absorption of the expansion force of individual battery cells by the busbar is solved, thus achieving better protection of individual battery cells and extending the service life of battery modules and electrical equipment.

CN224745842UActive Publication Date: 2026-09-11EVE ENERGY CO LTD
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Patent Information

Application Number
CN202521550707.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-23
Publication Date
2026-09-11
Estimated Expiration
2035-07-23

AI Technical Summary

Technical Problem

The existing busbars are not capable enough to absorb the forces generated by the expansion of individual battery cells, making the individual battery cells susceptible to damage.

Method used

Design a busbar comprising an arch bridge and a first part and a second part arranged along the height direction. The arch bridge connects the two parts, and the apex of the arch bridge has a specific distance relationship with the surface of the part, so that it can deform when the battery cell expands and absorb the expansion force.

Benefits of technology

By absorbing the expansion force of individual battery cells through the deformation of the arch bridge, the probability of damage to individual battery cells is reduced, thereby increasing the service life of battery modules and electrical equipment.

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Abstract

The application provides a busbar, a battery module and a power utilization device. The busbar comprises an arch bridge and a first part and a second part arranged along a first direction. The arch bridge is connected between the first part and the second part and forms a protrusion along the height direction of the busbar. In the height direction of the busbar, the vertex of the arch bridge and the surface of the first part or the surface of the second part have a first distance Q1. The relationship between the first distance Q1 and the thickness M1 of the first part is Q1 greater than or equal to (M1-0.5), and / or the relationship between the first distance Q1 and the thickness M2 of the second part is Q1 greater than or equal to (M2-0.5). In this way, when the battery monomer expands, the arch bridge of the busbar can deform to meet the requirements, thereby better absorbing the force generated by the expansion of the battery monomer, and thereby reducing the probability of damage to the battery monomer.
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