A battery circuit breaking unit, a power battery and a vehicle

By eliminating the high-voltage sampling connector on the battery circuit breaker side, integrating the sampling harness with the copper busbar assembly, and combining it with heating elements and heat dissipation structures, the problem of high structural cost of the battery circuit breaker is solved, achieving cost reduction and improved connection stability.

CN224472652UActive Publication Date: 2026-07-07BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
Filing Date
2025-04-27
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In the existing technology, the battery circuit breaker unit and the battery management unit are each equipped with two high-voltage sampling connectors, resulting in high structural costs.

Method used

The high-voltage sampling connector on the battery circuit breaker side is eliminated, and the sampling harness is directly electrically connected to the sampling terminal integrated with the copper busbar assembly. Only one wire connector is retained on the battery management unit side. Combined with the heat-generating element and heat dissipation structure, the heat conduction path is optimized, reducing structural costs and improving connection stability.

Benefits of technology

By reducing the number of connectors, structural costs are lowered. Furthermore, by optimizing heat conduction paths, connection stability and heat dissipation efficiency are improved to meet temperature rise requirements, thereby reducing the specifications of selected components and lowering product costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of battery technology, specifically providing a battery circuit breaker unit, a power battery, and a vehicle. The battery circuit breaker unit includes: a copper busbar assembly, which includes sampling terminals; and a sampling harness, one end of which is electrically connected to the sampling terminals, and the other end of which is connected to a terminal connector for mating with a battery management unit. This application eliminates the high-voltage sampling connector on the battery circuit breaker unit side; the sampling harness is directly electrically connected to the sampling terminals integrated into the copper busbar assembly. Only one terminal connector is retained on the battery management unit side for mating with the battery management unit, reducing the number of connectors and lowering structural costs. The fixed connection of the sampling harness on the battery circuit breaker unit side ensures connection stability, while the terminal connector is still retained on the battery management unit side for easy connection or disconnection.
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