To provide a battery protection device which protects a battery from excessive voltage reduction caused by cranking.SOLUTION: A battery protection device 1 comprises: a battery 11 which supplies power to a starter motor 2 when cranking an engine 3; a coil type reay 12 including a switch 121 which is connected in series to the battery 11 and a coil 122 which is connected in parallel to the battery 11; and a control part 11 by which, in a case where a predictive voltage of the battery 11 which is reduced in the case of cranking is lower than a drive voltage of the coil type relay 12 which is calculated from a temperature of the coil 122, a vehicle VE is notified of the predictive voltage that is lower than the drive voltage.SELECTED DRAWING: Figure 1
【課題】クランキングによる過度な電圧低下から電池を保護する電池保護装置を提供する。【解決手段】エンジン3のクランキング時にスタータモータ2に電力を供給する電池11と、電池11に直列接続したスイッチ121と電池11sに並列接続したコイル122とを備えるコイル式リレー12と、クランキング時に低下する電池11の予測電圧が、コイル122の温度から求めたコイル式リレー12の駆動電圧を下回る場合、予測電圧が駆動電圧を下回ることを車両VEに通知する制御部11とを備えて電池保護装置1を構成する。【選択図】図1
BATTERY PROTECTION DEVICE
電池保護装置
2019-04-18
Patent
Electronic Resource
Japanese
IPC: | F02N STARTING OF COMBUSTION ENGINES , Anlassen von Brennkraftmaschinen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |