Power Transmission Device And Antenna
A technology of power transmission and wireless power transmission, applied in circuit devices, antennas, electric traction and other directions, which can solve problems such as difficulty in power transmission
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Embodiment approach 1
[0048] figure 1 It is a block diagram showing a configuration example of the power transmission device 1 according to Embodiment 1 of the present invention.
[0049] The power transmission device 1 wirelessly transmits power including electric signals. Such as figure 1 As shown, the power transmission device 1 includes a transmission power supply 11 , a transceiver unit 12 , and a rectification circuit 13 . Such as figure 2 As shown in (b) etc., the transmitting and receiving unit 12 has the transmitting antenna 14 and the receiving antenna 15 .
[0050]The transmitting power supply 11 supplies the input direct current or alternating current to the transmitting antenna 14 . Also, when a high-frequency power supply is used as the transmission power supply 11 , the transmission power supply 11 converts input DC power or AC power into high-frequency power and supplies it to the transmission antenna 14 .
[0051] The transmitting antenna 14 wirelessly transmits power supplie...
Embodiment approach 2
[0098] In Embodiment 1, the case where the transmission / reception part 12 is provided on the shaft 51 which is a metal member was shown. On the other hand, in Embodiment 2, the case where the transmission / reception part 12 is arrange|positioned inside the case 52 containing a metal member is shown. In addition, the overall structure of the power transmission device 1 is the same as figure 1 The structures shown are the same, and descriptions thereof are omitted.
[0099] exist Figure 15 (a) shows the case where the transmission / reception part 12 is arrange|positioned inside the metal case 52 which opened the front. In addition, the shapes of the transmitting antenna 14 and the receiving antenna 15 are the same as figure 2 (a), figure 2 (b), figure 2 The shape shown in (c) is the same.
[0100] In this case, as in the first embodiment, in the shape of the antenna of the present invention, the directions of currents flowing in the two lines arranged close to each other...
Embodiment approach 3
[0125] In Embodiment 2, the case where the transmission / reception part 12 is arrange|positioned inside the housing|casing 52 containing a metal member was shown. On the other hand, in Embodiment 3, the case where the shield member 53 is arrange|positioned between the transmission-reception part 12 and a metal member is shown.
[0126] Such as Figure 20 (a), Figure 20 (b), Figure 20 As shown in (c), the shielding member 53 is arranged between the transmitting and receiving unit 12 and the metal member. In addition, in Figure 20 (a), Figure 20 (b), Figure 20 In (c), illustration of metal members is omitted. A magnetic sheet or a metal ring can be used as the shield member 53 . The magnetic sheet is obtained by forming a magnetic material having a high real part and a low imaginary part of the magnetic permeability, such as ferrite or amorphous silicon, in a sheet shape. The shielding member 53 may be arranged facing all the surrounding metal members, or may be arra...
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