This application provides a charging circuit of an on-board charger, an on-board charger, and a charging control method, and relates to the field of on-board charger technologies. A second end of a first power conversion circuit of the charging circuit is connected to a first end of a second power conversion circuit, a high-voltage output end of the second power conversion circuit charges a power battery pack of an electric vehicle, and a first low-voltage output end of the second power conversion circuit supplies power to a low-voltage system of the electric vehicle. The first power conversion circuit is configured to, when the electric vehicle is in a charging mode, convert an alternating current input from a first end of the first power conversion circuit into a direct current and transmit the direct current to the first end of the second power conversion circuit, and is further configured to, when the electric vehicle is in a driving mode, perform direct current conversion on the direct current obtained from the second power conversion circuit and supply a converted current to the low-voltage system. The second power conversion circuit is configured to, when the electric vehicle is in the driving mode, convert a high voltage of the power battery pack into a low voltage, transmit the low voltage to the first low-voltage output end, and output a direct current to the first power conversion circuit.
CHARGING CIRCUIT FOR ON-BOARD CHARGER, ON-BOARD CHARGER, AND CHARGING CONTROL METHOD
LADESCHALTUNG FÜR BORDLADER, BORDLADER UND LADESTEUERUNGSVERFAHREN
CIRCUIT DE CHARGE POUR CHARGEUR EMBARQUÉ, CHARGEUR EMBARQUÉ ET PROCÉDÉ DE COMMANDE DE CHARGE
2023-10-11
Patent
Electronic Resource
English
IPC: | 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 / 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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