Power control method, power control device, and battery system
The power control device and method optimize battery system operation by selecting discharge or charge targets based on charge state and degradation, addressing inefficiencies in heterogeneous battery systems and improving reliability.
WO2026146805A1PCT designated stage Publication Date: 2026-07-09SAMSUNG SDI CO LTD +1
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SAMSUNG SDI CO LTD
- Filing Date
- 2025-10-14
- Publication Date
- 2026-07-09
AI Technical Summary
Technical Problem
Existing battery systems face challenges in optimizing the operation of batteries with different types or degradation states, leading to inefficiencies and potential failures due to variations in battery degradation.
Method used
A power control device and method that includes DC-DC converters and a controller to manage the operation of multiple batteries by selecting optimal discharge or charge targets based on charge state, degradation status, and rating information, adjusting operating power, and disabling non-selected converters.
Benefits of technology
Enables optimal operation of heterogeneous battery systems by ensuring even power distribution and reducing degradation differences among batteries, enhancing system efficiency and reliability.
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Smart Images
Figure KR2025016166_09072026_PF_FP_ABST
Abstract
The present disclosure relates to a power control method, a power control device, and a battery system. The power control device according to an embodiment may include: multiple DC-DC converters connected to multiple batteries, respectively, and for converting power output from each of the multiple batteries and transmitting the converted power to an output of the battery system, or converting input power of the battery system and transmitting the converted input power to each of the multiple batteries; and a controller for receiving state-of-charge information and rated information of each of the multiple batteries from the multiple batteries, selecting a battery to be operated among the multiple batteries according to the state-of-charge information, determining target operating power of the battery to be operated, according to the rated information, and controlling an output of a DC-DC converter connected to the battery to be operated among the multiple DC-DC converters, according to the target operating power.
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