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Systems and methods for preventing wireless charging cross-connection

A wireless charging, cross-connection technology, applied in transmission systems, battery data exchange, near-field transmission systems, etc., can solve problems such as trouble and inconvenience

Active Publication Date: 2020-06-05
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cables and similar connectors can be inconvenient or cumbersome at times and have other disadvantages

Method used

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  • Systems and methods for preventing wireless charging cross-connection
  • Systems and methods for preventing wireless charging cross-connection
  • Systems and methods for preventing wireless charging cross-connection

Examples

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Embodiment Construction

[0040] In some wireless power systems, and as described below, the transmitter and receiver communicate at a frequency other than the frequency used to transmit power. In some embodiments, it is desirable to establish a so-called out-of-band communication channel independently of the wireless energy field used to transmit power. Out-of-band communication channels are useful to reduce the complexity of in-band transmitter and receiver circuits. Because in-band power transfer and out-of-band communication channels have different characteristics, the receiver may be out of range for wireless power from the transmitter but within range for out-of-band communication. As a result, when there are multiple transmitters in a given space, a cross-connect can result, where a power transmitter sends power to a power receiver, but connects its control signals to another power receiver, or a power receiver is controlled by a power receiver. The transmitter is powered but has a control sign...

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PUM

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Abstract

A system and method for charging a rechargeable device is provided. The system can include a wireless charger including a wireless power transmitter configured to generate a wireless charging field in at least one charging zone. The wireless charger further includes a transceiver configured to communicate with the chargeable device. The wireless charger further includes a controller configured to initiate a disconnection of the communication link between the wireless charger and the chargeable device based at least in part on a comparison of the detected power level of the wireless charger to a predetermined level indicative of saturation. Opening the connection facilitates avoiding cross-connection of the rechargeable device with the wireless charger and at least one other wireless charger.

Description

technical field [0001] The present invention generally relates to wireless power delivery. More specifically, the present disclosure relates to systems, methods, and apparatus for establishing communication between a wireless power receiver and a wireless power transmitter, where the receiver may be located within the wireless charging area of ​​the transmitter, but capable of establishing communication with one or more communication with an additional wireless power transmitter. Background technique [0002] A growing number and variety of electronic devices are powered via rechargeable batteries. These devices include mobile phones, portable music players, laptop computers, tablet computers, computer peripherals, communication devices (eg, Bluetooth devices), digital cameras, hearing aids, and the like. Although battery technology has improved, battery-powered electronic devices increasingly require and consume greater amounts of power, and thus often require recharging....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02J50/80H02J50/12
CPCH02J5/005H02J7/0042H02J7/00034H01M10/4257H02J50/90H02J50/80H02J50/12Y02E60/10H04B5/79
Inventor W·H·冯诺瓦克三世A·A·沙里夫M·Y-H·蔡
Owner QUALCOMM INC