Methods and systems are described to control the use of electrical power when charging a traction battery. A vehicle module can drive the contactor coils with two set-points for controlling the power into the contactor coils, namely, a travel or vehicle on set point and a charging, vehicle off set point. In use, full power is initially applied to the coils to guarantee immediate closure of the contactor. During charging and after closing the contactor, the power is set at the charging, vehicle off set point. The travel or vehicle on set point is higher than the charging, vehicle off set point. Using the charging, vehicle off set point reduces electricity consumption. The vehicle on set point is at a higher electrical level as it must maintain closure under worst-case vibration and shock conditions considering mounting location, contactor orientation, as well as other characteristics of the vehicle and contactor.
Contactor coil current reduction during vehicle battery charging
25.11.2015
Patent
Elektronische Ressource
Englisch
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
CONTACTOR COIL CURRENT REDUCTION DURING VEHICLE BATTERY CHARGING
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