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Power supply device, power supply system, and electronic device

A technology for power supply devices and electronic equipment, which is applied to circuit devices, electromagnetic wave systems, battery circuit devices, etc., and can solve problems such as uneven distribution of magnetic force lines and uneven power supply efficiency

Active Publication Date: 2012-10-17
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, for example, when the inner diameter of the power transmitting coil is larger than that of the power receiving coil, as described above, the distribution of the lines of force (magnetic flux density distribution) in the inner region of the power transmitting coil becomes non-uniform
Therefore, there is a problem that the power supply efficiency at the time of contactless power supply is not uniform depending on the relative positions of the primary-side device and the secondary-side device (for example, the arrangement of the secondary-side device).

Method used

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  • Power supply device, power supply system, and electronic device
  • Power supply device, power supply system, and electronic device
  • Power supply device, power supply system, and electronic device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0045] 1. First Embodiment (Example in which an auxiliary resonator unit including one resonator is provided in a primary-side device)

[0046] 2. Second Embodiment (Example in which an auxiliary resonator unit including a plurality of resonators is provided in a primary-side device)

no. 3 approach

[0047] 3. Third Embodiment (Example of Providing an Auxiliary Resonator in a Secondary-Side Device)

[0048] 4. Fourth Embodiment (Example in which an auxiliary resonator is provided in a primary-side device and a secondary-side device)

[0049] 5. Fifth Embodiment (Example in which an auxiliary resonator is provided independently of the primary-side device and the secondary-side device)

[0050] 6. Variations

[0051]

[0052] [Overall structure of power supply system 4]

[0053] figure 1 An example of the appearance configuration of the power supply system (power supply system 4) according to the first embodiment of the present invention is shown, figure 2 An example of the block configuration of the power supply system 4 is shown. The power supply system 4 is a system (a non-contact power supply system) that performs non-contact power transmission (power supply, power supply) using a magnetic field (using magnetic resonance, etc., the same applies hereinafter). This...

no. 2 approach

[0119] [Structure of power supply system 4A]

[0120] Figure 12 A schematic configuration example of a power supply system (4A of power supply system) according to the second embodiment is shown. The power supply system 4A of this embodiment is a system that performs non-contact power transmission using a magnetic field similarly to the power supply system 4, and includes a power supply device (not shown) and one or more electronic devices (not shown). The power transmitting device 11A is an electronic device having a power receiving device 21 . That is, this power supply system 4A includes a power transmission device 11A instead of the power transmission device 11 in the power supply system 4 , and the other configurations are the same.

[0121] The power transmission device 11A includes a power transmission unit 110A including a power transmission coil L1 and an auxiliary resonance unit 3A. The auxiliary resonator 3A is different from the auxiliary resonator 3, and has a...

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PUM

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Abstract

Provided is a power supply device that makes it possible to perform a transmission efficiency control corresponding to the position of a device when power transmission is performed between the devices by using a magnetic field and also provided are a power supply system and an electronic device. The power supply device is equipped with a power transmission unit having a transmission coil for transmitting power using a magnetic field and an auxiliary resonance unit including one or a plurality of resonators. A main resonant frequency in a main resonant operation using the transmission coil when transmitting power and auxiliary resonant frequencies of the resonators are different from each other. Adjusting the difference between such resonant frequencies changes the relationship (corresponding characteristics) between the relative position between a power supply device (transmission side) and an electronic device (receiving side) and a transmission efficiency when transmitting power.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims the benefit of priority from Japanese Patent Application No. 2011073074 filed in Japan Patent Office on Mar. 29, 2011, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates to a power supply system for non-contact power supply (power transmission) to electronic equipment, and a power supply device and electronic equipment suitable for such a power supply system. Background technique [0004] In recent years, power supply systems (contactless power supply systems, wireless charging systems) that perform non-contact power supply (power transmission) to CE devices (Consumer Electronics Devices: consumer electronics devices) such as mobile phones or portable music players have attracted attention. Attention. As a result, charging can be started by merely placing an electronic device (secondary-side device) on a char...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00
CPCH02J7/025H01F38/14H02J5/005H01F27/2871H02J50/12H02J50/402H02J50/90H02J50/005H02J50/60H02J50/70
Inventor 宫本宗
Owner SONY CORP