Battery charger cradle
First Claim
1. A battery charger designed to be used with a battery built-in device having an electromagnetically coupled induction coil incorporated in the battery built-in device and a battery rechargeable with a power induced by the induction coil, the battery charger comprising:
- a casing having a top plate;
a primary coil connected to an AC power source for inducing electromotive force to the induction coil, the primary coil being separated from the battery built-in device by the top plate;
a movement mechanism for moving the primary coil along an inner surface of the top plate; and
a position detection controller for detecting a position of the battery built-in device, the position detection controller controlling the movement mechanism to move the primary coil closer to the induction coil contained in the battery built-in device,wherein the casing houses the primary coil, the movement mechanism, and the position detection controller.
3 Assignments
0 Petitions
Accused Products
Abstract
In a battery charger cradle, a battery incorporated in a battery built-in device is charged by electric power induced to an induction coil. The cradle includes a primary coil for inducing electromotive force to the induction coil, a casing having a top plate atop of which the battery built-in device is placed, a movement mechanism for moving the primary coil along an inner surface of the top plate, and a position detection controller for detecting a position of the battery built-in device placed on the top plate and controlling the movement mechanism to bring the primary coil closer to the induction coil in the battery built-in device. When the battery built-in device is placed on the top plate, the position detection controller detects the position of the battery built-in device, and the movement mechanism moves the primary coil closer to the induction coil in the battery built-in device.
16 Citations
6 Claims
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1. A battery charger designed to be used with a battery built-in device having an electromagnetically coupled induction coil incorporated in the battery built-in device and a battery rechargeable with a power induced by the induction coil, the battery charger comprising:
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a casing having a top plate; a primary coil connected to an AC power source for inducing electromotive force to the induction coil, the primary coil being separated from the battery built-in device by the top plate; a movement mechanism for moving the primary coil along an inner surface of the top plate; and a position detection controller for detecting a position of the battery built-in device, the position detection controller controlling the movement mechanism to move the primary coil closer to the induction coil contained in the battery built-in device, wherein the casing houses the primary coil, the movement mechanism, and the position detection controller. - View Dependent Claims (2, 3, 4)
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5. A combination comprising:
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a battery built-in device having an electromagnetically coupled induction coil and a battery rechargeable with a power induced by the induction coil; and a battery charger for charging the battery built-in device, the battery charger comprising; a primary coil connected to an AC power source for inducing electromotive force to the induction coil; a casing housing the primary coil and having a top plate which is configured to permit the battery built-in device to be positioned relatively close to at a top surface side of the top plate; a movement mechanism for moving the primary coil along an inner surface of the top plate, the inner surface being opposite relative to the top surface of the top plate; and a position detection controller for detecting a position of the battery built-in device when positioned close to the top plate and controlling the movement mechanism to move the primary coil closer to the induction coil contained in the battery built-in device, wherein, when the battery built-in device is positioned relatively close to the top surface of the top plate of the casing, the position detection controller detects the position of the battery built-in device, the position detection controller controls the movement mechanism so that the movement mechanism moves the primary coil along the inner surface of the top plate to move the primary coil closer to the induction coil contained in the battery built-in device.
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6. A method for charging a battery built-in device by using a battery charger, the method comprising:
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detecting a position of the battery built-in device by a position detection controller when the battery built-in device is positioned relatively close to a top plate of a casing of the battery charger, the position detection controller being incorporated in the casing, and the battery built-in device incorporating an electromagnetically coupled induction coil and a battery that is rechargeable with a power induced by the induction coil; moving a primary coil along an inner surface of the top plate by a movement mechanism incorporated in the casing, the movement mechanism being controlled by the position detection controller to bring the primary coil closer to the induction coil of the battery built-in device, and the primary coil being contained in the casing and connected to an AC power source for inducing electromotive force to the induction coil; and charging the battery by the power induced from the primary coil to the induction coil when the induction coil is electromagnetically coupled to the primary coil.
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Specification