A battery system can include a battery pack; a first main relay having a first end connected to a positive terminal of the battery pack and a second main relay having a first end connected to a negative terminal of the battery pack; a first control relay connected between the first main relay and a positive terminal of an inverter and a second control relay connected between the second main relay and a negative terminal of the inverter; a welding diagnosing circuit including a first resistor and a first photocoupler connected between the positive terminal of the battery pack and the negative terminal of the inverter and a second resistor and a second photocoupler connected between the negative terminal of the inverter and the negative terminal of the battery pack; and a battery management system (BMS) configured to drive the first and second photocouplers to diagnose welding of the second control relay.
RELAY FUSION DIAGNOSIS CIRCUIT AND RELAY FUSION DIAGNOSIS METHOD
RELAISFUSIONSDIAGNOSESCHALTUNG UND RELAISFUSIONSDIAGNOSEVERFAHREN
CIRCUIT DE DIAGNOSTIC PAR FUSION DE RELAIS ET PROCÉDÉ DE DIAGNOSTIC PAR FUSION DE RELAIS
2024-10-09
Patent
Electronic Resource
English
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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