In an assembled battery monitoring system, a voltage monitoring apparatus monitors voltages of battery cells of an assembled battery. Discharging resistance elements and RC filters are correspondingly coupled between the battery cells and the voltage monitoring apparatus. Discharging switches are disposed inside of the voltage monitoring apparatus correspondingly to the battery cells. The discharging resistance elements are each disposed on a discharging path at a position that prohibits discharging of charges stored in a capacitor of the corresponding RC filter. A fault diagnosis device simultaneously turns on two discharging switches, which are apart from each other across at least two discharging switches, and determines that any of the discharging switches between the two discharging switches simultaneously turned on has a fault, when a terminal voltage of any of the battery cells that are located between the two discharging switches simultaneously turned on changes over a predetermined voltage.
Assembled battery monitoring system
26.01.2021
Patent
Elektronische Ressource
Englisch
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 |
ASSEMBLED BATTERY, BATTERY MODULE, AND MANUFACTURING METHOD FOR ASSEMBLED BATTERY
Europäisches Patentamt | 2020
|Assembled battery, battery module, and manufacturing method for assembled battery
Europäisches Patentamt | 2020
|ASSEMBLED BATTERY, VEHICLE, AND METHOD OF MANUFACTURING ASSEMBLED BATTERY
Europäisches Patentamt | 2019
|