To provide a power control device, a power control method, and a power control program capable of diagnosing the operation of a cutoff relay even when an external charger is connected.SOLUTION: A control unit 14 determines the state of a cut-off relay 32 on the basis of a voltage drop Vf between a load 20 side end and an IPD 34I side end of a switching element 34F of a dark current generation circuit 34 that reduces the voltage of a power supply 30 to generate a dark current, and a current Ia detected by a current sensor 40. When the voltage drop Vf is less than a predetermined threshold voltage and the current Ia is less than a predetermined threshold current, the control unit 14 determines the state of the cut-off relay 32 and the presence/absence of charging of the power source 30 by the external charger 22 on the basis of the voltage drop Vf and the current Ia each detected when a bypass circuit 38 that consumes a part of the power supplied from an external charger 22 is controlled to be in a conductive state while a negative electrode of the power supply 30 and one end of the load 20 are electrically connected.SELECTED DRAWING: Figure 4
【課題】外部充電器が接続された状態でも、遮断リレーの動作診断が可能な電源制御装置、電源制御方法、及び電源制御プログラムを得る。【解決手段】制御部14は、電源30の電圧を低下させて暗電流を生成する暗電流生成回路34のスイッチング素子34Fの負荷20側の端とIPD34I側の端との間の電圧降下Vf及び電流センサ40で検出した電流Iaに基づいて遮断リレー32の状態を判定する。制御部14は、電圧降下Vfが所定の閾値電圧未満で、かつ電流Iaが所定の閾値電流未満の場合に、電源30の負極と負荷20の一端とを導通する状態で外部充電器22から供給された電力の一部を消尽するバイパス回路38を導通状態に制御した際に各々検出された電圧降下Vf及び電流Iaに基づいて遮断リレー32の状態及び外部充電器22による電源30の充電の有無を判定する。【選択図】図4
POWER CONTROL DEVICE, POWER CONTROL METHOD, AND POWER CONTROL PROGRAM
電源制御装置、電源制御方法、及び電源制御プログラム
2022-10-17
Patent
Electronic Resource
Japanese
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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