To appropriately control charging and discharging of an assembled battery without exchanging SOC of all cells between a battery system and a power control system.SOLUTION: A battery pack 1 comprises: an assembled battery 10 including a plurality of cells 101 to 10M; a voltage sensor 21 which detects voltage of the plurality of cells; and a current sensor 22 which detects currents input into and output from the plurality of cells. A power control system 2 has: a PCU 60 adapted to charge and discharge the assembled battery 10; and an HVECU 90 controlling the PCU 60. The battery pack 1 outputs a deviation of SOC among the plurality of cells obtained from detection results of the voltage sensor 21 and the current sensor 22 to the HVECU 90. The HVECU 90 controls the PCU 60 so that a maximum SOC among the SOC of the plurality of cells calculated from the outputs from the battery pack 1 becomes smaller than an upper limit UL of a predetermined SOC region and a minimum SOC among the SOC of the plurality of cells becomes larger than a lower limit LL of the SOC region.SELECTED DRAWING: Figure 3
【課題】電池システムと電力制御システムとの間で全セルのSOCをやり取りしなくとも組電池の充放電を適切に制御する。【解決手段】電池パック1は、複数のセル101〜10Mを含む組電池10と、複数のセルの電圧を検出する電圧センサ21と、複数のセルに入出力される電流を検出する電流センサ22とを含む。電力制御システム2は、組電池10を充放電するように構成されたPCU60と、PCU60を制御するHVECU90とを備える。電池パック1は、電圧センサ21および電流センサ22の検出結果から求まる複数のセルの間でのSOCばらつきをHVECU90に出力する。HVECU90は、電池パック1の出力から算出される複数のセルのSOCのうちの最高SOCが所定のSOC領域の上限ULを下回り、かつ、複数のセルのSOCのうちの最低SOCがSOC領域の下限LLを上回るように、PCU60を制御する。【選択図】図3
POWER CONTROL SYSTEM, ELECTRIC VEHICLE AND POWER CONTROL METHOD
電力制御システム、電動車両および電力制御方法
2021-06-24
Patent
Elektronische Ressource
Japanisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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