WIRELESS POWER TRANSFER METHOD USING FIELD WINDING AND VEHICLE ASSEMBLY AND ELECTRIC VEHICLE USING THE SAME
First Claim
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1. A wireless power transfer (WPT) method for an electric vehicle (EV), the method comprising:
- a vehicle controller or a vehicle assembly (VA) controller connected to the vehicle controller performing communications, for charging of a battery of the EV, with a ground assembly (GA) controller of a charger connected to a primary coil or a primary pad located outside the EV; and
connecting the battery to a field winding of a driving motor of the EV before starting the WPT,wherein the battery is charged by a power magnetically induced at the field winding from the primary coil.
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Abstract
A wireless power transfer (WPT) method for an electric vehicle (EV) may include a vehicle controller or a vehicle assembly (VA) controller connected to the vehicle controller performing communications, for charging of a battery of the EV, with a ground assembly (GA) controller of a charger connected to a primary coil or a primary pad located outside the EV; and connecting the battery to a field winding of a driving motor of the EV before starting the WPT. The battery is charged by a power magnetically induced at the field winding from the primary coil.
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Citations
18 Claims
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1. A wireless power transfer (WPT) method for an electric vehicle (EV), the method comprising:
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a vehicle controller or a vehicle assembly (VA) controller connected to the vehicle controller performing communications, for charging of a battery of the EV, with a ground assembly (GA) controller of a charger connected to a primary coil or a primary pad located outside the EV; and connecting the battery to a field winding of a driving motor of the EV before starting the WPT, wherein the battery is charged by a power magnetically induced at the field winding from the primary coil. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A vehicle assembly (VA) for wireless power transfer (WPT), comprising:
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a secondary coil magnetically coupled to a primary coil located outside an electric vehicle (EV); an impedance matching network (IMN) or a filter connected to the secondary coil; a rectifier connected to the IMN or the filter; and an impedance converter connected to the rectifier, wherein the secondary coil comprises a field winding of a driving motor of the EV. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An electric vehicle (EV) comprising:
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a driving motor; an inverter connected to the driving motor; a control board configured to control a plurality of switches of the inverter; a battery connected to a field winding of the driving motor; and a charge switch disposed between the field winding of the driving motor and the battery to allow or block current flow on the field winding, wherein a current induced at the field winding by a magnetic field from an external primary coil is charged to the battery when the charge switch is turned on. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification