Wireless power transmission device
The present specification relates to a wireless power transmission device. The present specification provides a wireless power transmission device comprising: a power supply unit for supplying power to the wireless power transmission device; at least one first coil for transmitting power to a wireless power reception device; and first and second condensers configured so as to be connected respectively to different both ends of the power supply unit and the first coil.
1. A wireless power transmission apparatus comprising:
a power supply unit for supplying power to the wireless power transmission apparatus;
at least one primary coil for transmitting power to a wireless power reception apparatus;
first and second condensers configured to be connected to both ends of the power supply unit and the primary coil, respectively;
a detection circuit that measures a current or a voltage associated with the primary coil; and
third and fourth condensers electrically coupled with the detection circuit or the primary coil, wherein the third and fourth condensers are configured to provide a signal to the detection circuit.
2. The wireless power transmission apparatus of claim 1 , wherein the first and second condensers are configured to reduce a reflected power applied from the wireless power reception apparatus to the power supply unit as power is transmitted from the primary coil to the wireless power reception apparatus.
3. The wireless power transmission apparatus of claim 1 , wherein the detection circuit receives power data from the wireless power reception apparatus, and generates a control signal for controlling the power supply unit based on the power data and the current or voltage flowing in the primary coil.
4. The wireless power transmission apparatus of claim 1 , further comprising first and second grounds connected to both ends of the primary coil.
5. The wireless power transmission apparatus of claim 4 , further comprising:
a fifth condenser connected between the primary coil and the first ground; and
a sixth condenser connected between the primary coil and the second ground.
6. The wireless power transmission apparatus of claim 5 , wherein the fifth and sixth condensers are configured to reduce noise due to a voltage applied to the first and second condensers.
7. A wireless power transmission method using a wireless power transmission apparatus, the method comprising:
generating power necessary for transmitting wireless power by a power source;
transmitting wireless power to a wireless power reception apparatus;
attenuating reflection power reflected from the wireless power reception apparatus;
measuring a current or voltage associated with a primary coil by a detection circuit, wherein the measuring of the current or voltage comprises providing a signal to the detection circuit by third and fourth condensers electrically coupled with the detection circuit or the primary coil.
8. The wireless power transmission method of claim 7 , wherein the transmitting of the wireless power comprises transmitting power by at least one primary coil.
9. The wireless power transmission method of claim 8 , wherein the attenuating of the reflection power comprises reducing the reflection power applied to the power source by first and second condensers disposed at both ends of the primary coil.
10. The wireless power transmission method of claim 7 , wherein the measuring of the current or voltage comprises receiving power data from the wireless power reception apparatus, and generating a control signal for controlling the power source based on the power data and the current or voltage flowing in the primary coil.
11. The wireless power transmission method of claim 7 , wherein first and second grounds are connected to both ends of the primary coil, a fifth condenser is connected between the primary coil and the first ground, and a sixth condenser is connected between the primary coil and the second ground.