Embodiments of this application provide a DC/DC conversion circuit, a power unit, a charging pile, and a charge-discharge heating method. The circuit includes: a first rectifier module, where an input end of the first rectifier module is connected to a power grid through an AC/DC conversion circuit; a transformer module, where an input end of the transformer module is connected to an output end of the first rectifier module; an energy storage module; and a second rectifier module, where an input end of the second rectifier module is configured to connect to an output end of the transformer module or the energy storage module, and an output end of the second rectifier module is configured to connect to a battery pack of an electric vehicle when the charging pile is charging the electric vehicle. The second rectifier module is configured to: connect to the transformer module, and perform charging and discharging between the power grid and the battery pack within a first frequency range to heat the battery pack; or configured to connect to the energy storage module, and perform charging and discharging between the energy storage module and the battery pack within a second frequency range to heat the battery pack, where the first frequency range is smaller than the second frequency range.
DC/DC CONVERSION CIRCUIT, POWER UNIT, CHARGING PILE, AND CHARGING AND DISCHARGING HEATING METHOD
GLEICHSTROMWANDLERSCHALTUNG, LEISTUNGSEINHEIT, LADESÄULE UND LADE- UND ENTLADEHEIZVERFAHREN
CIRCUIT DE CONVERSION CC/CC, UNITÉ D'ALIMENTATION, PILE DE CHARGE ET PROCÉDÉ DE CHAUFFAGE DE CHARGE ET DE DÉCHARGE
19.03.2025
Patent
Elektronische Ressource
Englisch
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 / 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 |
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