Method and apparatus for wireless power transmission
First Claim
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1. A wireless power transmitting apparatus between a wheel and a tire of a vehicle, the wireless power transmitting apparatus comprising:
- an electric generatorelectric generator that converts rotational energy of an axle to electrical energy; and
a wireless transmitting unit that wirelessly transmits the electrical energy to the sensor in order to use it as a driving power source of a sensor that detects a state of the tire,wherein the electric generator comprises a power transfer connection pin that connects the inside of the wheel and the outside of the wheel and that transfers the electrical energy to the wireless transmitting unit.
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Abstract
A wireless power transmitting apparatus converts rotational energy of an axle to electrical energy, transfers the electrical energy to a transmitting coil of the wireless power transmitting apparatus through a power transfer connection pin that connects the inside of the wheel and the outside of the wheel of a vehicle, and wirelessly transmits the electrical energy to the sensor using resonance between a transmitting coil of the wireless power transmitting apparatus and a receiving coil of the sensor in order to use it as a driving power source of a sensor that detects a state of a tire.
30 Citations
7 Claims
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1. A wireless power transmitting apparatus between a wheel and a tire of a vehicle, the wireless power transmitting apparatus comprising:
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an electric generatorelectric generator that converts rotational energy of an axle to electrical energy; and a wireless transmitting unit that wirelessly transmits the electrical energy to the sensor in order to use it as a driving power source of a sensor that detects a state of the tire, wherein the electric generator comprises a power transfer connection pin that connects the inside of the wheel and the outside of the wheel and that transfers the electrical energy to the wireless transmitting unit.
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2. The wireless power transmitting apparatus of claim 1, wherein the wireless transmitting unit comprises a transmitting coil that contacts a rim of the wheel and a space of the tire and wirelessly the electrical energy to the sensor using resonance between the transmitting coil and a receiving coil of the sensor, and
the power transfer connection pin transfers the electrical energy to the transmitting coil.
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3. The wireless power transmitting apparatus of claim 2, wherein the electric generator further comprises:
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a magnetic material that is located at the axle; and a power generation coil that is located at the outside of the wheel, wherein the power transfer connection pin is connected between the power generation coil and the transmitting coil.
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4. The wireless power transmitting apparatus of claim 1, wherein the power transfer connection pin is insulated from the wheel.
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5. A method of wirelessly transmitting power between a wheel and a tire of a vehicle in a wireless power transmitting apparatus, the method comprising:
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converting rotational energy of an axle to electrical energy; transferring the electrical energy to a transmitting coil of the wireless power transmitting apparatus through a power transfer connection pin that connects the inside of the wheel and the outside of the wheel; and wirelessly transmitting the electrical energy to the sensor using resonance between a transmitting coil of the wireless power transmitting apparatus and a receiving coil of the sensor in order to use it as a driving power source of a sensor that detects a state of the tire.
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6. The method of claim 4, wherein the converting of rotational energy comprises generating, by a magnetic material that is located at the axle and a power generation coil that is located at the outside of the wheel, the electrical energy by the rotating axle.
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7. The method of claim 5, wherein the transmitting coil contacts a rim of the wheel and a space of the tire, and
the power transfer connection pin is connected between the power generation coil and the transmitting coil.
Specification