Master wireless communication device, slave wireless communication device, and method of operating them.

The implementation of RF-based wireless communication with integrated RFICs and distributed consensus algorithms in battery management systems addresses the challenges of wired communication, reducing costs and ensuring stable, accurate, and resilient RF offset corrections in electric vehicle battery systems.

JP2026093322APending Publication Date: 2026-06-08SAMSUNG SDI CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
SAMSUNG SDI CO LTD
Filing Date
2025-09-11
Publication Date
2026-06-08

AI Technical Summary

Technical Problem

Existing battery management systems (BMS) in electric vehicles face issues with complex wiring, increased weight, and maintenance difficulties due to wired communication, necessitating the development of wireless communication methods between a master BMS and multiple slave BMSs.

Method used

A master wireless communication device and slave wireless communication device utilize RF-based wireless communication with integrated RFICs and processors to measure and correct RF offsets using a distributed consensus algorithm, enabling self-correction without external calibration equipment.

Benefits of technology

This approach reduces production costs and time, ensures long-term system stability by correcting RF offsets autonomously, improves communication accuracy, and enhances system resilience to fluctuations, while being applicable to battery systems of various scales and configurations.

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Abstract

This paper presents a mechanism that allows a master BMS and multiple slave BMSs to self-correct RF offsets during RF-based wireless communication. [Solution] This disclosure relates to a master wireless communication device, a slave wireless communication device, and a method for operating them. This disclosure provides a configuration that allows relative RF offset data between wireless communication devices to be measured and an absolute RF offset to be estimated based on the measured relative RF offset data.
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