A battery management system from board equalization resistor temperature detection circuit

By designing a battery management system slave plate equalization resistor temperature detection circuit in the battery management system, and utilizing a temperature detection module and thermal jumper surface mount devices, the problems of battery imbalance and excessive temperature are solved, thereby improving the safety and reliability of the battery pack.

CN224480982UActive Publication Date: 2026-07-10FUJIAN LONGJING HONEYCOMB ENERGY STORAGE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FUJIAN LONGJING HONEYCOMB ENERGY STORAGE TECHNOLOGY CO LTD
Filing Date
2025-06-18
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

In the battery packs of electric vehicles, voltage differences exist between the series-connected battery cells, leading to battery imbalance. Furthermore, excessively high temperatures during the passive equalization process pose safety risks, necessitating effective temperature detection methods.

Method used

Design a battery management system with a temperature detection circuit for the equalization resistor. The equalization resistor is connected to a surface mount device with a thermal jumper. The temperature is detected by a temperature detection module. The system includes a combination of battery pack cells, equalization channel switches, equalization resistors, a temperature detection module, and surface mount devices with thermal jumpers to achieve temperature detection of the equalization circuit.

Benefits of technology

It enables temperature detection of the equalization circuit, timely handling of overheating issues, reduction of safety risks, and improvement of the safety and reliability of the battery management system.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224480982U_ABST
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Abstract

The utility model embodiment provides a kind of battery management system from board equalization resistance temperature detection circuit, comprising: the first electrode end of the Kth group battery pack electric core is electrically connected with the one end of the Kth equalization channel switch, and the second electrode end of the Kth group battery pack electric core is electrically connected with the first end of the Kth equalization resistance;The second end of the Kth equalization resistance is electrically connected with the other end of the Kth equalization channel switch;The first electrode end of the Kth group battery pack electric core is also electrically connected with the second electrode end of the K-1th group battery pack electric core;Every one or more in the N equalization resistances, with the one end of a thermal jumper surface mount device heat conduction connection;The other end of every one or more in thermal jumper surface mount device is heat conduction connection with the measurement end of a temperature detection module.The utility model embodiment can realize temperature detection to equalization resistance by temperature detection module, solve how to carry out temperature detection to equalization circuit problem.
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