DC/DC (DC-DC converter) control method of hybrid power vehicle

The invention provides a DC/DC (DC-DC converter) control method of a hybrid power vehicle. The DC/DC control method comprises: step one, a vehicle controller detects a current signal of a high-voltage DC bus on the terminal of a power battery, a current signal of a low-voltage DC bus on the terminal...

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Bibliographische Detailangaben
Hauptverfasser:	ZHOU YONGYOU, PANG ERCHAO, CAO ZHONGCHENG, QIN KAI, HAN WEI, DOU GUOWANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	The invention provides a DC/DC (DC-DC converter) control method of a hybrid power vehicle. The DC/DC control method comprises: step one, a vehicle controller detects a current signal of a high-voltage DC bus on the terminal of a power battery, a current signal of a low-voltage DC bus on the terminal of a 12V battery, and a voltage signal on the terminal of the 12V battery; step two, the vehicle controller determines the status of charging and discharging of the power battery; step three, the vehicle controller estimates the state of charge of the 12V battery; step four, the vehicle controller makes DC/DC on/off judgment; step five, the vehicle controller calculates the required output voltage of a DC/DC; and step six, the vehicle controller sends DC/DC on/off command signals and required DC/DC output voltage command signals to the DC/DC, and the DC/DC executes the commands from the vehicle controller. The method eliminates the charge/discharge loss of the power battery during the process of converting the hig