Electric vehicle
First Claim
1. An electric vehicle comprising:
- a charging circuit including at leasta reception coil configured to receive, by wireless power transmission, AC power transmitted from an electrical transmission circuit outside of the vehicle, anda battery which is charged with power obtained by rectifying the AC power received by the reception coil; and
a control device including;
a battery voltage detecting unit configured to detect voltage of the battery, anda charging current value setting unit configured to set a charging current value at which to charge the battery, in accordance with the voltage of the battery detected by the battery voltage detecting unit;
wherein the control device is configured to set the charging current value by increasing the charging current value over time while the voltage of the battery increases so that a load resistance value of the charging circuit is constant in a constant-resistance charging mode, at the time of continuing charging of the battery, the control device being configured to initiate the constant-resistance charging mode based on a determination by the control device that a state of charge (SOC) of the battery or the voltage of the battery is at or above a predetermined threshold value, or based on an input from a user,wherein the control device is configured to initiate a constant-power control charging mode in which charging power of the charging circuit is constant when charging the battery based on a determination by the control device that the SOC of the battery or the voltage of the battery is below the predetermined threshold value, andwherein the control device is configured to, based on the input from the user, select between the constant-resistance charging mode and the constant-power control charging mode.
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Accused Products
Abstract
An electric vehicle includes a charging circuit and a control apparatus. The charging circuit includes a reception coil and a battery. The reception coil is configured to receive wirelessly AC power transmitted from an electrical transmission circuit outside of the electric vehicle. The battery is configured to be charged with power obtained by rectifying the AC power received by the reception coil. The control apparatus includes a battery voltage detector and a charging current value setting device. The charging current value setting device is configured to set a charging current value at which the battery is charged in accordance with voltage of the battery detected by the battery voltage detector. The charging current value is set so that a load resistance value of the charging circuit is constant in a period during which the battery is being charged.
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Citations
21 Claims
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1. An electric vehicle comprising:
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a charging circuit including at least a reception coil configured to receive, by wireless power transmission, AC power transmitted from an electrical transmission circuit outside of the vehicle, and a battery which is charged with power obtained by rectifying the AC power received by the reception coil; and a control device including; a battery voltage detecting unit configured to detect voltage of the battery, and a charging current value setting unit configured to set a charging current value at which to charge the battery, in accordance with the voltage of the battery detected by the battery voltage detecting unit; wherein the control device is configured to set the charging current value by increasing the charging current value over time while the voltage of the battery increases so that a load resistance value of the charging circuit is constant in a constant-resistance charging mode, at the time of continuing charging of the battery, the control device being configured to initiate the constant-resistance charging mode based on a determination by the control device that a state of charge (SOC) of the battery or the voltage of the battery is at or above a predetermined threshold value, or based on an input from a user, wherein the control device is configured to initiate a constant-power control charging mode in which charging power of the charging circuit is constant when charging the battery based on a determination by the control device that the SOC of the battery or the voltage of the battery is below the predetermined threshold value, and wherein the control device is configured to, based on the input from the user, select between the constant-resistance charging mode and the constant-power control charging mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electric vehicle comprising:
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a charging circuit comprising; a reception coil configured to receive wirelessly AC power transmitted from an electrical transmission circuit outside of the electric vehicle; and a battery configured to be charged with power obtained by rectifying the AC power received by the reception coil; and a control apparatus comprising; a battery voltage detector configured to detect voltage of the battery; and a charging current value setting device configured to set a charging current value at which the battery is charged in accordance with the voltage of the battery detected by the battery voltage detector, and configured to set the charging current value in a constant-resistance charging mode by increasing the charging current value over time while the voltage of the battery increases so that a load resistance value of the charging circuit is constant in a period during which the battery is being charged, the control apparatus being configured to initiate the constant-resistance charging mode based on a determination by the control apparatus that a state of charge of the battery or the voltage of the battery is at or above a predetermined threshold value, or based on an input from a user, wherein the control apparatus is configured to initiate a constant-power control charging mode in which charging power of the charging circuit is constant when charging the battery based on a determination by the control apparatus that the state of charge of the battery or the voltage of the battery is below the predetermined threshold value, and wherein the control apparatus is configured to, based on the input from the user, select between the constant-resistance charging mode and the constant-power control charging mode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification