To detect disconnection of a second power source line in a battery pack including a control unit to be driven by power to be supplied from at least one of the first and second power source lines.SOLUTION: A battery pack 1 includes: a first power source line L1 connected to an auxiliary machine battery Bam via a relay Re; a second power source line L2 connected to the auxiliary machine battery Bam; a control unit 6 which is driven by power supplied from at least one of the first power source line L1 and the second power source line L2 increments a turning-on frequency Con of the relay Re and determines whether the relay Re is turned off; and a non-volatile memory 4. The control unit 6 detects whether the second power source line L2 is disconnected based on the turning-on frequency Con stored in the non-volatile memory 4 and a fact that the relay Re is turned-off.SELECTED DRAWING: Figure 1
【課題】第1及び第2電源線の少なくとも一方から供給される電力により駆動する制御部を備える電池パックにおいて、第2電源線の断線を検知する。【解決手段】リレーReを介して補機バッテリBamに接続される第1電源線L1と、補機バッテリBamに接続される第2電源線L2と、第1電源線L1及び第2電源線L2の少なくとも一方から供給される電力により駆動し、リレーReのオン回数Conをカウントアップし、リレーReがオフしたか否かを判断する制御部6と、不揮発性メモリ4とを備えて電池パック1を構成し、制御部6は、不揮発性メモリ4に記憶されたオン回数ConとリレーReがオフしたことに基づいて、第2電源線L2が断線しているか否かを検知する。【選択図】図1
BATTERY PACK AND DISCONNECTION DETECTION METHOD
電池パック及び断線検知方法
2020-07-27
Patent
Electronic Resource
Japanese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / 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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