Systems and methods for constant current fast charging of electric vehicles
AssigneesInnovations & Partnerships Office University of Toronto, Eleappower Ltd.
InventorsPeter Waldemar Lehn, Ruoyun Shi, Theodore Soong
Life of this patent
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Abstract
A DC charging circuit includes a first inverter module corresponding to a first battery; a second inverter module corresponding to second battery; and DC terminals tapping off a high-side of the first inverter module and a low-side of the second inverter module. A front-end switching circuit is also described. The front-end switching circuit controls charging input from a DC source to at least one inverter circuit, each inverter circuit corresponding to at least one respective battery. The front-end switching circuit is an add-on for interfacing to high voltage DC inputs.
Claims20
A front-end switching circuit for controlling charging input from at least one DC power source to at least a first inverter circuit and a second inverter circuit, the first inverter circuit corresponding to at least a first battery and the second inverter circuit corresponding to at least a second battery, the front-end switching circuit comprising:
- at least one switching device which when electrically coupled with the first inverter circuit, the second inverter circuit and the at least one DC source, the at least one switching device is configured to control the charging input provided to at least one of the first and the second batteries, the at least one switching device controllable in conjunction with switches in at least one of the first inverter circuit and the second inverter circuit based on at least one voltage of at least one of the first and the second batteries.
A method for controlling charging input from a DC power source to at least a first inverter circuit and a second inverter circuit, using a front-end switching circuit, the first-inverter circuit corresponding to at least a first battery and the second inverter circuit corresponding to at least a second battery, the method comprising:
- controlling, using at least one switching device of the front-end switching circuit, the charging input provided to at least one of the first battery and the second battery, the at least one switching device controllable in conjunction with switches in at least one of the first inverter circuit and the second inverter circuit based on at least one voltage of at least one of the first battery and the second battery.
A non-transitory machine readable medium, storing machine interpretable instructions, which when executed by a processor, causes the processor to perform a method for controlling charging input from a DC power source to at least a first inverter circuit and a second inverter circuit, using a front-end switching circuit, the first inverter circuit corresponding to at least a first battery and the second inverter circuit corresponding to at least a second battery, the method comprising:
- controlling, using at least one switching device of the front-end switching circuit, which when electrically coupled with the first inverter circuit, the second inverter circuit and the DC source, the charging input provided to at least one of the first battery and the second battery, the at least one switching device controllable in conjunction with switches in at least one of the first inverter circuit and the second inverter circuit based on at least one voltage of at least one of the first and the second battery.
Dependencies are inferred from the claim text.