The present invention discloses an energy management system of an electric vehicle, a control method therefor, and an electric vehicle. The system includes: a power battery including a plurality of battery modules; a plurality of balanced DC-DC converter modules, first ends of the balanced DC-DC converter modules being correspondingly connected to the battery modules and second ends of the balanced DC-DC converter modules being connected in parallel to a low-voltage direct-current bus; a bidirectional car charger having an alternating-current end configured to connect to a power grid/charging box, a first direct-current end connected to the low-voltage direct-current bus, and a second direct-current end connected to a high-voltage direct-current bus; a sampling module; and a control module configured to separately control each balanced DC-DC converter module according to the state information of each battery module, the state information of the low-voltage battery, the state information of the power battery and the load information of the low-voltage electric apparatuses to perform balancing management on the plurality of battery modules, supply power to the low-voltage electric apparatuses, and charge the low-voltage battery, and controlling the bidirectional car charger to supply power to the low-voltage electric apparatuses and charge the low-voltage battery. The system realizes the power supply to the low-voltage components of the entire vehicle, the balancing of the power battery and the redundancy design of key functions, and improves the safety and reliability of the system.
ELECTRIC VEHICLE ENERGY MANAGEMENT SYSTEM, CONTROL METHOD THEREFOR, AND ELECTRIC VEHICLE
ELEKTROFAHRZEUGENERGIEVERWALTUNGSSYSTEM, STEUERUNGSVERFAHREN DAFÜR UND ELEKTROFAHRZEUG
SYSTÈME DE GESTION D'ÉNERGIE DE VÉHICULE ÉLECTRIQUE, SON PROCÉDÉ DE COMMANDE ET VÉHICULE ÉLECTRIQUE
2019-08-14
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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