Guidance and alignment system and methods for electric vehicle wireless charging systems

A technology of wireless power transmission and coils, applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of inconvenient and troublesome connectors

Active Publication Date: 2017-04-19
WITRICITY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cables and similar connectors can sometimes be inconvenient or cumbersome and have other drawbacks

Method used

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  • Guidance and alignment system and methods for electric vehicle wireless charging systems
  • Guidance and alignment system and methods for electric vehicle wireless charging systems
  • Guidance and alignment system and methods for electric vehicle wireless charging systems

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Embodiment Construction

[0030] The detailed description, given below in connection with the accompanying drawings, is intended as a description of exemplary embodiments and is not intended to represent the only embodiments in which the invention may be practiced. The term "exemplary" is used throughout this description to mean "serving as an example, instance or illustration" and should not necessarily be construed as preferred or advantageous over other exemplary embodiments. The detailed description includes specific details for the purpose of providing a thorough understanding of the exemplary embodiments. In some instances, some devices are shown in block diagram form.

[0031]According to one or more embodiments, it is contemplated that the magnetic orientation methods and systems disclosed herein are integrated into an IPT charging system, and preferably integrated into a base subsystem and in particular into a base IPT coupler (i.e. base pad) middle. However, the methods disclosed here can a...

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Abstract

Guidance and alignment systems are disclosed for wireless charging systems to assist in aligning the transmitter and receiver inductive power transfer (IPT) couplers. These systems guide positioning and alignment to provide sufficient coupling between the transmitter and receiver IPT couplers. Exemplary systems provide a magnetic field sensor, magnetic field generator, and magnetic vectoring to determine a position of an electric vehicle or a wireless charging base. In a magnetic vectoring system, an alignment system comprising at least three coils (or similar circuits) on a magnetically permeable substrate receives a positioning magnetic field including modulated information signals and processes the received signal to generate an output for determining a position of the positioning magnetic field source relative to the magnetic field sensor position. The alignment system may further comprise a similar structure that generates the positioning magnetic field, that may include modulated information signals, based on input signals.

Description

technical field [0001] The described technology relates generally to wireless power. More specifically, the present disclosure is directed to applications involving wireless power transfer between a ground-based charging unit and a vehicle-based charging unit, and determining the position of an electric vehicle relative to the ground-based charging unit for guidance and alignment purposes. Apparatus, systems and methods. Background technique [0002] Rechargeable systems, such as electric vehicles, have been introduced that include motive power derived from electrical energy received from an energy storage device, such as a battery. For example, a hybrid electric vehicle includes an on-board charger that uses power from the vehicle's brakes and a conventional electric motor to charge the vehicle. Purely electric vehicles typically receive electrical energy for charging the battery from other sources. Battery electric vehicles are generally proposed to be charged by some t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/00G01R33/02H01F38/14H02J50/12H02J50/90
CPCH02J5/005G01R33/0047G01R33/0206H01F38/14H02J50/12H02J50/90Y02T90/12Y02T90/14Y02T10/7072B60L53/38B60L53/126B60L53/122Y02T10/70B60L53/12H02J50/40H02J50/70H02J50/60B60Y2200/91
Inventor H·P·威德默L·西伯A·戴特维勒
Owner WITRICITY CORP
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