Power Supply Device for Vehicles
AssigneeCaterpillar SARL
InventorsAtsushi Kawaguchi, Kenji Yokohata
Life of this patent
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Abstract
Power supply device includes a power supply circuit with a low voltage load circuit and a high voltage load circuit connected to a plurality of batteries connected in series. A power supply circuit includes an equalizer that can prevent uneven consumption of each battery; a disconnect switch that enables the battery on the low voltage side to be electrically cut off; and a disconnect relay that enables the battery on the high voltage side to be electrically cut off. A machine controller starts an engine controller by turning on an engine key relay after turning on the disconnect relay.
Claims5
A power supply device for vehicles that has a low voltage load circuit which is connected to a part of a plurality of batteries connected in series, and a high voltage load circuit that is connected to the plurality of batteries and that operates at a higher voltage than the low voltage load circuit, the power supply device for vehicles comprising:
- an equalizer that is connected to the plurality of batteries and that prevents unsymmetrical wear of the batteries;
- a circuit breaking switch that can electrically cut off one of batteries connected in series;
- and
- circuit breaking means that can electrically cut off the other of the batteries connected in series.
Dependencies are inferred from the claim text.