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A wireless power transfer device

A wireless power transmission and wireless technology, applied in circuit devices, transportation and packaging, battery circuit devices, etc., can solve problems such as low output power, expensive solutions, and increased system operating frequency

Pending Publication Date: 2021-02-19
AUCKLAND UNISERVICES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasing the operating frequency of these systems can be an expensive solution
Due to the low operating frequency, the size of the transmit coil must be relatively large to generate sufficient EMF on the pickup coil, otherwise the output power will be extremely low

Method used

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  • A wireless power transfer device
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Examples

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Embodiment Construction

[0081] The present invention discloses a novel method and apparatus for wireless power transfer through conductive components, such as inherently conductive or via such as figure 1 as shown ( Figure 12 A similar example is also shown in ) for a combined capacitive and inductive coupling topology (100) with an object having a conductive layer or surface. based on figure 1 The system in the block diagram shown in describes the proposed method. A metal barrier (101) (conductive layer or surface) divides the whole system into two sides: a transmission side (210) and a reception side (220), which are connected by a coupling interface (102). The transmission side (210) contains an AC-DC converter (110), which can be considered to provide a DC voltage source. The DC voltage is then converted to AC voltage by an inverter module (120). A metal barrier (101) is capacitively coupled with two primary structures, in this example in the form of a transmission plate (130) forming two se...

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Abstract

A wireless power transfer apparatus for capacitive inductive power transfer has a primary and a secondary device separated by the conductive member. The primary device has at least two transmitter plates configured to be capacitively coupled with the conductive member to induce a current flow and generate a magnetic field in the conductive member. The secondary device is connectable to a load andprovided with a receiving coil configured to be inductively coupled with the conductive member.

Description

technical field [0001] The present invention relates to wireless power transfer systems, and is particularly, but not exclusively, related to systems using inductive or capacitive (wireless) power transfer topologies. [0002] In particular, although not exclusively, the present invention aims to provide an improved circuit topology that enables wireless transfer of power across conductive surfaces using combined capacitive and inductive coupling. Additionally, this approach reduces the effects of eddy currents and system losses, thereby reducing system size and cost, and improving energy density and reliability. Background technique [0003] Wireless Power Transfer (WPT) was originally proposed by Tesla in 1891 with the aim of using near-field electromagnetic induction to transfer power without making a direct electrical connection. With the development of power electronics, WPT technology has been widely studied and applied in many fields, such as electric motors, consume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J50/05H02J50/10H02J50/70H01F38/14H02J7/02H02J5/00
CPCH02J50/10H02J50/05H03H7/38H02J5/00H02J50/12H04B5/79H01F38/14H02J50/70H01F2038/146
Inventor 呼爱国黄亮周玮
Owner AUCKLAND UNISERVICES LTD