A wireless battery management system with high-voltage start-stop safety control and a control method thereof

By introducing a high-voltage start-stop switch and wireless communication into the power battery system, the problem of high-voltage safety control relying on software logic in existing technologies is solved, physical safety defenses and wiring harness simplification are achieved, and the safety and reliability of the system are improved.

CN122354291APending Publication Date: 2026-07-10GUANGXI YICHUAN INTELLIGENT TECHNOLOGY CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGXI YICHUAN INTELLIGENT TECHNOLOGY CO LTD
Filing Date
2026-05-11
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The high-voltage safety control of existing power battery systems relies on software logic and lacks physical safety defenses. There is a risk of unexpected high-voltage relay closure, and the dense wiring harness is prone to wear, which affects signal reliability.

Method used

A high-voltage start-stop switch is introduced as an independent physical safety enabling device, connected in series between the wireless battery management system and the high-voltage power distribution system to build a physical control channel. The power supply to the relay control circuit is cut off by the mechanical switch, and the wiring harness is simplified by combining wireless communication.

Benefits of technology

It improves the system's functional safety and communication reliability, reduces the risk of wire harness wear, ensures the safety and reliability of the high-voltage circuit under fault conditions, and facilitates maintenance operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a wireless battery management system and its control method with high-voltage start-stop safety control, applicable to fields such as ships, energy storage, and electric vehicles. The system includes a high-voltage box, a high-voltage start-stop switch, a wireless battery management system, and battery modules. This invention uses the high-voltage start-stop switch, connected in series in the high-voltage circuit, as the sole control power supply valve. The power supply for the main control module of the wireless battery management system and the control coils of each relay in the high-voltage box must be obtained through this switch. When the switch is open, the control power supply path is physically cut off, the high-voltage circuit is forcibly disconnected, and all relay control circuits are de-energized. This invention uses a surface-mount cell monitor with near-field wireless communication to replace the traditional sampling harness, eliminating the risk of cable wear and short circuits. The system's power-on self-test and high-voltage control power supply are independent of each other. The high-voltage start-stop switch provides a physical forced disconnection path independent of software, cutting off the high-voltage circuit in milliseconds, significantly improving the high-voltage safety and maintenance reliability of ships.
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