Portable terminal charging device and automobile equipped with same
First Claim
1. A portable terminal charging device comprising:
- a support plate whose front surface side serves as a portable terminal installation unit;
a charging coil that is arranged on a rear surface side of the support plate so as to face the support plate;
a first detection coil that is arranged between the charging coil and the portable terminal installation unit of the support plate, and that has a large diameter;
a second detection coil that is arranged inward of the first detection coil, and that has a smaller diameter than the first detection coil; and
a controller that is connected to the first and second detection coils,wherein the controller performs a safety operation if a ratio (V2/V1) of a second voltage (V2) detected by the second detection coil to a first voltage (V1) detected by the first detection coil becomes smaller than a set value, andwherein the controller stops power supply to the charging coil in order to perform the safety operation if the ration (V2/V1) of the second voltage (V2) detected by the second detection coil to the first voltage (V1) detected by the first detection coil becomes smaller than the set value.
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Accused Products
Abstract
A portable terminal charging device includes a large diameter detection coil arranged between a charging coil and a portable terminal, and a further detection coil arranged inward of the large diameter detection coil and having a smaller diameter than the large diameter detection coil. The large diameter detection coil and the further detection coil detect a state of a foreign metal object by finding out a decrease in the magnetic flux of an inward section of the charging coil and conversely finding out an increase in the magnetic flux of an outward section thereof, if the foreign metal object is present between a portable terminal installation unit of a support plate and the portable terminal.
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Citations
17 Claims
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1. A portable terminal charging device comprising:
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a support plate whose front surface side serves as a portable terminal installation unit; a charging coil that is arranged on a rear surface side of the support plate so as to face the support plate; a first detection coil that is arranged between the charging coil and the portable terminal installation unit of the support plate, and that has a large diameter; a second detection coil that is arranged inward of the first detection coil, and that has a smaller diameter than the first detection coil; and a controller that is connected to the first and second detection coils, wherein the controller performs a safety operation if a ratio (V2/V1) of a second voltage (V2) detected by the second detection coil to a first voltage (V1) detected by the first detection coil becomes smaller than a set value, and wherein the controller stops power supply to the charging coil in order to perform the safety operation if the ration (V2/V1) of the second voltage (V2) detected by the second detection coil to the first voltage (V1) detected by the first detection coil becomes smaller than the set value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A portable terminal charging device comprising:
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a support plate whose front surface side serves as a portable terminal installation unit; a charging coil that is arranged on a rear surface side of the support plate so as to face the support plate; a first detection coil that is arranged between the charging coil and the portable terminal installation unit of the support plate, and that has a large diameter; a second detection coil that is arranged inward of the first detection coil, and that has a smaller diameter than the first detection coil; and a controller that is connected to the first and second detection coils, wherein the controller performs a safety operation if a ratio (V2/V1) of a second voltage (V2) detected by the second detection coil to a first voltage (V1) detected by the first detection coil becomes smaller than a set value, and wherein the controller operates an alarm unit connected to the controller in order to perform the safety operation if the ratio (V2/V1) of the second voltage (V2) detected by the second detection coil to the first voltage (V1) detected by the first detection coil becomes smaller than the set value. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification