Power supply system and power supply method for electric vehicle
AssigneesHyundai Motor Company, Kia Corporation
InventorSung Min HONG
Life of this patent
Estimating the term…
Abstract
A power supply system for an electric vehicle includes a main battery, a first power network connected to the main battery in parallel and including a first converter converting, a first battery and a first load, a plurality of second power networks connected to the main battery in parallel and respectively including a second converter and a second load, a switch module including a plurality of switches, and a controller monitoring a magnitude of a first load current flowing through the first load in real time and sequentially closing the plurality of switches based on an efficiency curve.
Claims20
A power supply system for an electric vehicle, the power supply system comprising:
- a main battery;
- a first power network connected to the main battery in parallel and including:
- a first converter connected to the main battery and converting DC power from the main battery into first DC power and supplying the first DC power to a first load connected to the first converter;
- a first battery connected to an output terminal of the first converter;
- and
- the first load;
- a plurality of second power networks connected to the main battery in parallel and respectively including:
- a second converter connected to the main battery and converting the DC power from the main battery into second DC power and supplying the second DC power to a second load connected to an output terminal of the second converter;
- and
- the second load;
- a switch module including a plurality of switches connected between a first end of the output terminal of the first converter disposed in the first power network and a first end of the output terminal of the second converter disposed in each of the plurality of second power networks;
- and
- a controller monitoring a magnitude of a first load current flowing through the first load in real time and sequentially closing the plurality of switches based on an efficiency curve of the first converter and at least one of the second converters as the magnitude of the first load current monitored in real time increases, to additionally supply the second DC power converted by the first converter and at least one of the second converters disposed in the plurality of second power networks to the first load.
A power supply method performed by a computing device including one or more processors and a memory storing one or more programs executed by the one or more processors, the power supply method comprising:
- monitoring in real time a magnitude of a first load current flowing to a first load in a first power network, wherein the first power network includes a first converter connected in parallel to a main battery, a first battery connected to an output terminal of the first converter, and the first load;
- and
- sequentially closing a plurality of switches based on an efficiency curve of the first converter and at least one of second converters disposed in a plurality of second power networks as the magnitude of the first load current flowing through the first load monitored in real time increases, to additionally supply second DC power converted by at least one of the first converter and the second converters to the first load, wherein the plurality of second power networks includes the second converters and the second load.
Dependencies are inferred from the claim text.