BATTERY CHARGING PAD EMPLOYING MAGNETIC INDUCTION
First Claim
1. A battery charging pad that transmits power from a transmitting coil to a magnetically coupled receiving coil to charge a battery housed in a device housing a battery comprising:
- a transmitting coil that is put in close proximity to the receiving coil in the device housing a battery and transmits electrical power to the receiving coil;
a case that houses the transmitting coil and has a top plate where a device housing a battery is placed;
a moving mechanism housed in the case to move the transmitting coil in close proximity to the receiving coil; and
a position detection controller that detects the position of a device housing a battery placed on the top plate and controls the moving mechanism to move the transmitting coil in close proximity to the receiving coil in the device housing a battery, the position detection controller comprising;
a plurality of position detection coils fixed to the inside surface of the top plate;
a pulse generator that supplies pulse signals to the position detection coils;
a receiving circuit that receives echo signals output from the receiving coil and transmitting coil to the position detection coils as a result of excitation by pulse signals supplied from the pulse generator to the position detection coils; and
a discrimination circuit that determines the position of the receiving coil and the transmitting coil from the echo signals received by the receiving circuit,wherein the position detection controller detects the position of the receiving coil and transmitting coil and controls the moving mechanism to move the transmitting coil in close proximity to the receiving coil.
1 Assignment
0 Petitions
Accused Products
Abstract
The battery charging pad comprises a moving mechanism 13 that moves the transmitting coil 11, and a position detection controller 14 that detects the position of a device housing a battery 50 and controls the moving mechanism to move the transmitting coil in close proximity to a receiving coil 51. Pulse signals are supplied to a plurality of position detection coils 30 from a pulse generator 31, and the echo signals are a result of coil excitation by the pulse signals. The battery charging pad position detection controller 14 detects the position of the receiving coil 51 and moves the transmitting coil 11 in close proximity to the receiving coil 51, and the position detection controller 14 detects the position of the transmitting coil 11 and moves the transmitting coil 11 to the reference position, or it moves the transmitting coil 11 in close proximity to the receiving coil 51.
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Citations
19 Claims
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1. A battery charging pad that transmits power from a transmitting coil to a magnetically coupled receiving coil to charge a battery housed in a device housing a battery comprising:
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a transmitting coil that is put in close proximity to the receiving coil in the device housing a battery and transmits electrical power to the receiving coil; a case that houses the transmitting coil and has a top plate where a device housing a battery is placed; a moving mechanism housed in the case to move the transmitting coil in close proximity to the receiving coil; and a position detection controller that detects the position of a device housing a battery placed on the top plate and controls the moving mechanism to move the transmitting coil in close proximity to the receiving coil in the device housing a battery, the position detection controller comprising; a plurality of position detection coils fixed to the inside surface of the top plate; a pulse generator that supplies pulse signals to the position detection coils; a receiving circuit that receives echo signals output from the receiving coil and transmitting coil to the position detection coils as a result of excitation by pulse signals supplied from the pulse generator to the position detection coils; and a discrimination circuit that determines the position of the receiving coil and the transmitting coil from the echo signals received by the receiving circuit, wherein the position detection controller detects the position of the receiving coil and transmitting coil and controls the moving mechanism to move the transmitting coil in close proximity to the receiving coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification