Power supply apparatus for electric vehicle and method of controlling the same
AssigneeHyundai Motor Company
InventorsChang Kiun KWARK, Dea Ki CHEONG
Life of this patent
Estimating the term…
Abstract
A power supply system for an electric vehicle stably and efficiently supplies power to a connected external device when an ignition of an electric vehicle is turned off, and a method of controlling the same. A power supply apparatus of an electric vehicle may include a main battery, an auxiliary battery, a power converter for converting power from the main battery and recharging the auxiliary battery with the converted power, a port for recharging a connected external device by receiving power from the auxiliary battery when the ignition of the electric vehicle is turned off, and a battery sensor for monitoring a state of charge (SoC) of the auxiliary battery and starting the power converter according to the SoC.
Claims20
A power supply apparatus of an electric vehicle, comprising:
- a main battery;
- an auxiliary battery;
- a power converter for converting power from the main battery and recharging the auxiliary battery with the converted power;
- a port for recharging a connected external device by power from the auxiliary battery when an ignition of the electric vehicle is turned off;
- and
- a battery sensor for monitoring a state of charge (SoC) of the auxiliary battery and starting the power converter according to the SoC.
A method of supplying power of an electric vehicle, comprising:
- detecting that an external device is connected to a port supplied with power through an auxiliary battery in a state in which an ignition of the electric vehicle is turned off;
- detecting a charging current by a detector of the port;
- monitoring a state of charge (SoC) of the auxiliary battery by a battery sensor when the detected charging current is greater than or equal to a first threshold value;
- and
- starting a power converter, which recharges the auxiliary battery using power of a main battery, by the battery sensor according to the SoC.
A battery sensor comprising:
- a controller area network (CAN) transceiver for exchanging a signal with an external device;
- a state of charge (SoC) sensor for detecting an SoC of an auxiliary battery;
- and
- a controller for monitoring the SoC of the auxiliary battery when charging current information is received from a detector of a port when an ignition of an electric vehicle is turned off, and starting a power converter, which recharges the auxiliary battery using power of a main battery, according to the SoC of the auxiliary battery.
Dependencies are inferred from the claim text.