Cell Balancing Method and Battery System
Summary
The European Patent Office has published patent application EP4712296A1 for a cell balancing method and battery system developed by LG Energy Solution, Ltd. The invention details a method for managing battery cell balancing in low-power modes to optimize energy consumption and performance.
What changed
The European Patent Office (EPO) has published patent application EP4712296A1, detailing a novel cell balancing method and battery system invented by LG Energy Solution, Ltd. The patent describes a system comprising a battery with multiple cells, a monitoring unit capable of operating in first and second low-power modes with varying wakeup frequencies and cell balancing conditions, and a control unit that manages entry into these modes and a sleep mode. This innovation aims to enhance battery efficiency and longevity through optimized power management.
While this is a patent publication and not a regulatory rule imposing direct compliance obligations, manufacturers in the battery and energy sectors, particularly those developing advanced battery systems for electric vehicles or consumer electronics, should be aware of this technological development. Companies may consider how this patented technology could impact their own product development, intellectual property strategies, or potential licensing opportunities. No immediate compliance actions are required, but monitoring patent landscapes is crucial for competitive positioning.
Source document (simplified)
CELL BALANCING METHOD AND BATTERY SYSTEM EMPLOYING SAME
Publication EP4712296A1 Kind: A1 Mar 18, 2026
Applicants
LG Energy Solution, Ltd.
Inventors
CHOI, Jang Hyeok, KIM, Kyeongmin
Abstract
The present invention relates to a cell balancing method and a battery system employing same. The battery system of the present invention comprises: a battery including a plurality of battery cells; a monitoring unit for performing a first low-power mode and a second low-power mode, wherein, in the first low-power mode, wakeup is executed every short term period and cell balancing is performed on each of the plurality of battery cells on the basis of a predetermined first cell balancing execution condition, and in the second low-power mode, if a period extension condition is satisfied, wakeup is executed every long term period that is longer than the short term period by a predetermined period, and cell balancing is performed on each of the plurality of battery cells on the basis of a second cell balancing execution condition; and a control unit for, if a low-power mode entry condition is satisfied, indicating the monitoring unit to enter the first low-power mode, and then entering a sleep mode in which a preconfigured operation is not performed.
IPC Classifications
H02J 7/00 20260101AFI20241213BHEP H02J 9/00 20060101ALI20241213BHEP H01M 10/44 20060101ALI20241213BHEP H01M 10/42 20060101ALI20241213BHEP
Designated States
AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
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