Battery management system with synchronized wake-up signal reception period and communication method thereof

ChangeBridge: Patent Grants - Batteries (H01M)

Published March 31st, 2026

Detected March 31st, 2026

Summary

USPTO granted Patent US12592420B2 to LG Energy Solution, Ltd. on March 31, 2026. The patent covers a battery management system with synchronized wake-up signal reception periods and a communication method, using a master-slave BMS architecture. The invention includes 11 claims describing how slave battery management systems synchronize their reception periods based on request signals.

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What changed

Patent US12592420B2 was granted to LG Energy Solution, Ltd. covering a battery management system with synchronized wake-up signal reception periods and associated communication methods. The system includes a master BMS that transmits wake-up signals and slave BMS units that periodically check for these signals, with the ability to synchronize reception periods between slave units based on request signals. The patent application (No. 17801579) was filed on June 29, 2021, and contains 11 claims.

For companies developing battery management systems, electric vehicles, or energy storage products, this patent grant establishes IP protection that may affect product development decisions. Manufacturers should review whether their battery management technologies could fall within the scope of these claims and consider IP clearance strategies for new product lines incorporating synchronized wake-up functionality.

Source document (simplified)

← USPTO Patent Grants

Battery management system with synchronized wake-up signal reception period and communication method thereof

Grant US12592420B2 Kind: B2 Mar 31, 2026

Assignee

LG ENERGY SOLUTION, LTD.

Inventors

Ji Eun Kim

Abstract

A battery management system for a battery pack having a plurality of battery modules includes a master battery management system disposed in the battery pack and configured to transmit a wake-up signal, and slave battery management systems each configured to periodically check for the wake-up signal at a reception period and to transmit state information of a corresponding one of the battery modules to the master battery management system if the wake-up signal is received. A first slave battery management system, among the slave battery management systems, is configured to transmit a request signal to the master battery management system at a start of the reception period of the first slave battery management system. Based on the request signal, a second slave battery management system is configured to synchronize the reception period of the second slave battery management system with the reception period of the first slave battery management system.

CPC Classifications

H01M 10/425 H01M 10/4257 H01M 10/4207 H01M 10/441 H01M 2010/4271 H01M 2010/4278 H01M 2220/20

Filing Date

2021-06-29

Application No.

17801579

Claims

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Named provisions

Abstract Master Battery Management System Slave Battery Management Systems Wake-up Signal Reception Period State Information Transmission Request Signal Synchronization