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Power Feeding Device and Wireless Power Transmission Device

A technology for power supply devices and power supply coils, applied in circuit devices, battery circuit devices, electrical components, etc., can solve problems such as power consumption, slow response speed, poor charging, etc., to improve responsiveness, suppress power consumption, and expand the range of configuration Effect

Active Publication Date: 2017-09-29
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the technology disclosed in Patent Document 1, an actuator such as a servo motor is required as a moving mechanism for moving the power supply coil, so there is a technology in which power is consumed for purposes other than the original wireless power transmission. question
In addition, in the technique disclosed in Patent Document 1, since the position detection controller detects the position of the battery-built-in device, since the battery-built-in device is placed in the It takes time for the charging stand to position the power coil and the induction coil until it starts charging the built-in battery, so there are technical problems such as a slow response until charging starts.
Furthermore, although the technology disclosed in Patent Document 1 places the battery-built-in device at any position on the charging stand for charging, it does not envisage charging while moving the battery-built-in device. If the device is moved, the movement of the power supply coil cannot follow the movement of the device with the battery built-in, and there may be a possibility of poor charging

Method used

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  • Power Feeding Device and Wireless Power Transmission Device
  • Power Feeding Device and Wireless Power Transmission Device
  • Power Feeding Device and Wireless Power Transmission Device

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no. 1 Embodiment approach

[0059] First, refer to Figure 1~6 , the overall configuration of the wireless power transmission device S1 according to the first embodiment of the present invention will be described. figure 1 It is a schematic perspective view showing the wireless power transmission device according to the first embodiment of the present invention. figure 2 It is a schematic perspective view showing the power feeding device of the wireless power transmission device according to the first embodiment of the present invention. image 3 is along figure 2 A cross-sectional view of the power supply device cut at line I-I. Figure 4 is along figure 2 A cross-sectional view of the magnetic structure at the cutting line II-II. Figure 5 It is a schematic perspective view showing the power receiving device of the wireless power transmission device according to the first embodiment of the present invention. Figure 6 It is a schematic functional block diagram showing a power supply device in t...

no. 2 Embodiment approach

[0079] Next, refer to Figure 10 as well as Figure 11 , the configuration of the wireless power transmission device according to the second embodiment of the present invention will be described. Figure 10 It is a schematic perspective view showing the power feeding device of the wireless power transmission device according to the second embodiment of the present invention. Figure 11 is along Figure 10 Cross-sectional view of the power supply unit in cut-off line III-III.

[0080] The wireless power transmission device according to the second embodiment is the same as the wireless power transmission device S1 according to the first embodiment, and includes a power feeding device S2 and a power receiving device S3. The power supply device S2 has a magnetic structure 14 , a power supply coil device 20 , and a power supply device 30 . The power receiving device S3 includes a power receiving coil device 40 and an output circuit unit 50 . The configurations of the power fee...

no. 3 Embodiment approach

[0084] Next, refer to Figure 13 , the configuration of the wireless power transmission device according to the third embodiment of the present invention will be described. Figure 13 It is a schematic perspective view showing the power supply device of the wireless power transmission device according to the third embodiment of the present invention.

[0085]The wireless power transmission device according to the third embodiment is the same as the wireless power transmission device S1 according to the first embodiment, and includes a power feeding device S2 and a power receiving device S3. The power supply device S2 has a magnetic structure 10 , a power supply coil device 20 , a power supply device 30 , and an electromagnetic shielding material 60 . The power receiving device S3 includes a power receiving coil device 40 and an output circuit unit 50 . The configurations of the magnetic structure 10 , the power feeding coil device 20 , the power feeding power source device 3...

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Abstract

A power feeding device which wirelessly transmits power towards a power receiving device equipped with a power receiving coil device, comprising: a magnetic structure having two magnetic bodies; and a power feeding coil device which receives power from a power supply and generates an alternating magnetic field, the mutual main surfaces of the two magnetic bodies face each other, and the two magnetic bodies are disposed to be separated at a predetermined distance, the power feeding coil device is disposed at any position between the two magnetic bodies, the two magnetic bodies receive the alternating magnetic field during power transmission, and a power feeding region in which transmitting power towards the power receiving coil device is possible is formed between the two magnetic bodies.

Description

technical field [0001] The present invention relates to a power supply device and a wireless power transmission device capable of wireless power transmission. Background technique [0002] A wireless power transmission technology that supplies power without using a power cord (cord) has attracted attention. Since wireless power transmission technology can wirelessly supply power from the power supply side to the power receiving side, it is expected to be applied to various products such as transportation equipment such as trains and electric vehicles, home appliances, electronic equipment, wireless communication equipment, and toys. [0003] Against such a background, the development of a power supply device that wirelessly transmits electric power to a power receiving device is actively being developed. In this power supply device, in order to improve user convenience, it is required to expand the range that the power receiving device can receive power, and there is an inc...

Claims

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Application Information

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IPC IPC(8): H02J50/10
CPCH02J7/0042H02J50/12H02J50/70H02J50/90
Inventor 花房一义
Owner TDK CORPARATION
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