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Inductive power transmitter, receiver and method of operation

A power transmitter, inductive technology, applied in the direction of electrical components, transmission systems, circuit devices, etc., can solve problems such as impossible DD coils

Pending Publication Date: 2019-06-21
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Thus, for inductive power transmitters that must be compatible with a wide range of receiver coil types, it has not heretofore been possible to take advantage of the improved z

Method used

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  • Inductive power transmitter, receiver and method of operation
  • Inductive power transmitter, receiver and method of operation
  • Inductive power transmitter, receiver and method of operation

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0051] figure 1A representation of an inductive power transfer (IPT) system 1 is shown. The IPT system includes an inductive power transmitter 2 and an inductive power receiver 3 . The inductive power transmitter is connected to a suitable power source 4, such as mains power. The inductive power transmitter may comprise a coil drive circuit 5 which typically comprises an AC-DC converter connected to an inverter. The inverter supplies the one or more transmitting coils 6 with AC current so that the one or more transmitting coils generate an alternating magnetic field. In some configurations, the transmit coil can also be considered separate from the inverter. One or more transmit coils may be connected in parallel or in series to a capacitor (not shown) to form a resonant circuit.

[0052] figure 1 Also shown is the controller 7 within the inductive power transmitter 2 . A controller can be connected to each component of the inductive power transmitter. The controller ma...

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PUM

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Abstract

The invention provides an inductive power transmitter, a receiver and a method of operation. A method of communication of information as to receiver coil type to an inductive power transmitter to enable different modes of operation of inductive power transmitters and / or inductive power transmitters utilizing such information is provided. An inductive power receiver may include a communications circuit for communicating with an inductive power transmitter to transmit information as to the receiver coil type. Transmitter coils of an inductive power transmitter may be driven in a first mode and also in a second mode if it receives receiver coil type information associated with the second mode. The power transmitter may include a controller configured to receive receiver coil type informationfrom an inductive power receiver and to drive a plurality of power transmitting coils in one of a plurality of modes depending on the receiver coil type. With bidirectional communication and configurability on both sides the transmitter controller and receiver controller may negotiate the modes of operation of the transmitter controller and receiver controller via the communications circuits.

Description

technical field [0001] The present invention relates to the communication of information to an inductive power transmitter about the type of receiver coil and to the mode of operation of the inductive power transmitter and / or the inductive power receiver utilizing such information. Background technique [0002] Electrical converters are found in many different types of electrical systems. In general, a converter converts a first type of supply to a second type of output. Such conversion may include DC-DC, AC-AC and DC-AC electrical conversion. In some configurations, the converter may have any number of DC and AC "components", for example a DC-DC converter may incorporate an AC-AC converter stage in the form of a transformer. [0003] The term "inverter" may sometimes be used to specifically describe a DC-AC converter. Also, such an inverter may include other conversion stages, or an inverter may be a stage in the context of a more general converter. Accordingly, the ter...

Claims

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Application Information

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IPC IPC(8): H02J50/10H02J50/80
CPCH02J50/10H02J50/80H04B5/24H04B5/72H04B5/79H02J50/12
Inventor J·D·路易斯
Owner APPLE INC