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Near field, full duplex data link for use in static and dynamic resonant induction wireless charging

A full-duplex, link technology, used in electric vehicle charging technology, circuits, circuit devices, etc., to avoid self-interference

Active Publication Date: 2017-08-29
感应电动车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention addresses the above needs and limitations of the prior art by implementing a coherent full-duplex radio frequency data link that relies on near-field inductive coupling rather than far-field as in conventional systems Propagation to limit the effective communication range, employing synchronous detection to suppress out-of-channel and some co-channel interference without complex frequency domain filtering, and employing a coherent repeater architecture for correct identification of data link transmit-receive device pairs

Method used

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  • Near field, full duplex data link for use in static and dynamic resonant induction wireless charging
  • Near field, full duplex data link for use in static and dynamic resonant induction wireless charging
  • Near field, full duplex data link for use in static and dynamic resonant induction wireless charging

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Embodiment Construction

[0026] will combine Figure 1 to Figure 9An exemplary embodiment of the present invention for charging an electric vehicle will be described, but those skilled in the art will appreciate that the teachings provided herein may be applied to other non-vehicle resonant magnetic induction wireless power transfer systems. Such embodiments are intended to be within the scope of this disclosure.

[0027] figure 1 A conceptual representation of the present invention is shown in which two devices are provided, a ground-side device associated with a ground-side wireless power transmitting device and a vehicle-side device associated with a vehicle-side wireless power receiving device. figure 1 The data link shown can be implemented, for example, on the coil alignment error detection device described in US Provisional Patent Application No. 61 / 682,572, filed August 6, 2013, wireless power transfer coils, or on a near field communication antenna. Such as figure 1 As shown, the ground si...

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Abstract

A full duplex, low latency, near field data link controls a static and / or dynamic resonant induction, wireless power transfer system used for recharging electric vehicles and other electrically powered devices. A coherent transponder configuration enables low complexity synchronous detection and positive rejection of signals originating from nearby and adjacent vehicles. A reference crystal oscillator in the ground side apparatus provides frequency synchronization for both the forward and the return data links. Transmission is by means of near field magnetic induction between pairs of loop antennas which, together with the effective waveguide below cutoff structure comprised by the vehicle underbody and the ground surface, largely restrict signal propagation to the area in the immediate vicinity of the system antennas.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 046,392, filed September 5, 2014. The content of this application is incorporated herein by reference. technical field [0003] The present invention describes, in an exemplary embodiment, a full-duplex near-field data link intended to control a resonant inductive wireless power transfer system for charging electric vehicles. The present invention uses a coherent transponder configuration that enables interference suppressed simultaneous detection and aggressive suppression of signals originating from nearby and neighboring vehicles. Background technique [0004] Inductive power transfer has many important applications across many industries and markets. A resonant inductive wireless power device can be considered a switch-mode DC-DC power supply with a large gap transformer separating and isolating the power supply input and power supply ou...

Claims

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Application Information

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IPC IPC(8): H01F38/14H02J50/10H02J50/80
CPCH01F38/14H02J50/10H02J50/80Y02T90/12H04B5/24H04B5/72H04B5/79H04B1/30
Inventor 布鲁斯·理查德·朗安德鲁·W·达加
Owner 感应电动车有限公司
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