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US 2026/0269708 A1Published application
Bidirectional split-phase power converter for electric vehicle charging
Assigneedcbel Inc.
InventorsErnest Montllo Casabayo, Paulo Barroso, Reza Hesaraki
Life of this patent
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Abstract
A battery charger capable of receiving AC power and delivering DC power to an electric power storage battery is adapted to operate with high-frequency isolation transformer on the DC side with two secondary coils and two DC outputs that can be used for lower voltage charging or higher voltage charging.
Claims11
A bidirectional power converter for converting electric power between an AC power grid and an electric vehicle (EV), the system comprising:
- at least one AC-to-DC power converter having an AC port and a DC side port;
- an isolated DC-to-DC power converter connected on a first side to said DC side port of said at least one AC-to-DC power converter and on a second side to a first and a second pair of DC terminals, the at least one isolated DC-to-DC power converter comprising:
- an isolation transformer having a primary winding and two secondary windings;
- a DC to high-frequency AC converter connected to the DC side of the at least one AC-to-DC power converter and to the primary winding of the isolation transformer on an AC side;
- a first high-frequency AC to DC converter connected to a first one of said two secondary windings on the AC side and to the first pair of DC terminals on the DC side;
- and
- a second high-frequency AC to DC converter connected to a second one of said two secondary windings on said AC side and to the second pair of DC terminals on the DC side;
- and
- a power conversion controller having an interface for receiving a charge command from a battery management system (BMS) of an electric power storage battery of the EV, a grid tie phase and a voltage measurement, said power conversion controller operatively connected to the at least one AC-to-DC power converter and to the isolated DC-to-DC power converter for transferring power in accordance with the charge voltage command, the grid tie phase and the voltage measurement.
6 more elements
An electric vehicle (EV) charger, the charger comprising:
- an isolated DC-to-DC power converter connected on a first side to said DC side port of said at least one AC-to-DC power converter and on a second side to a first and a second pair of DC terminals, the isolated DC-to-DC power converter comprising:
- an isolation transformer having a primary winding and two secondary windings;
- a DC to high-frequency AC converter connected to the DC side of the at least one AC-to-DC power converter and to the primary winding of the isolation transformer on an AC side;
- a first high-frequency AC to DC converter connected to a first one of said two secondary windings on the AC side and to the first pair of DC terminals on the DC side;
- and
- a second high-frequency AC to DC converter connected to a second one of said two secondary windings on said AC side and to the second pair of DC terminals on the DC side;
- and
- a power conversion controller having an interface for receiving a charge command from a battery management system (BMS) of an electric power storage battery of the EV, said power conversion controller operatively connected to the isolated DC-to-DC power converter for transferring power in accordance with the charge command.
5 more elements
Dependencies are inferred from the claim text.