BATTERY SYSTEM

PROBLEM TO BE SOLVED: To suppress high-rate deterioration and expand battery use.SOLUTION: A battery system 100 comprises a controller 140 for controlling a battery pack 120. The controller 140 comprises a manometer 141, an SOC acquisition unit 142, a capacity acquisition unit 143, a storage unit 14...

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1. Verfasser: SOEJIMA TAKAYUKI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To suppress high-rate deterioration and expand battery use.SOLUTION: A battery system 100 comprises a controller 140 for controlling a battery pack 120. The controller 140 comprises a manometer 141, an SOC acquisition unit 142, a capacity acquisition unit 143, a storage unit 144, a calculation unit 145, and a limitation processing unit 146. The calculation unit 145 acquires a reference surface pressure P2 on the basis of an SOC acquired by the SOC acquisition unit 142, battery capacity after deterioration acquired by the capacity acquisition unit 143, and relation among the battery capacity, the SOC, and the reference surface pressure, the relation being stored in the storage unit 144. When a surface pressure difference dP between a surface pressure P1 acquired by the manometer 141 and the reference surface pressure P2 is larger than a predetermined threshold T, the limitation processing unit 146 limits charge current to the battery pack 120.SELECTED DRAWING: Figure 1 【課題】ハイレート劣化の抑制と、電池利用の拡充【解決手段】電池システム100は、組電池120を制御する制御装置140を備えている。制御装置140は、圧力計141と、SOC取得部142と、容量取得部143と、記憶部144と、算出部145と、制限処理部146とを備えている。このうち、算出部145は、SOC取得部142によって取得されたSOCと、容量取得部143によって取得された劣化後の電池容量と、記憶部144に記憶された電池容量とSOCと基準面圧との関係とに基づいて基準面圧P2を得る。そして、制限処理部146は、圧力計141によって取得された面圧P1と基準面圧P2との面圧差dPが、予め定められた閾値Tよりも大きい場合に組電池120への充電電流を制限する。【選択図】図1