Wireless power transmitter and operation method thereof

A wireless power and transmitter technology, used in current collectors, electric vehicles, electrical components, etc., can solve the problems of reduced battery life and performance, large working space, instantaneous discharge phenomenon, etc., to prevent charging interruption and stably control power Effect

Inactive Publication Date: 2018-07-03
LG INNOTEK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the case where many devices are used by the terminal supply method, a large number of cables take up considerable work space and are difficult to arrange, so the appearance is not good
In addition, the terminal supply method causes problems such as instantaneous discharge phenomenon due to different potential differences between terminals, damage and fire due to foreign matter, natural discharge, and reduction in life and performance of batteries
However, in the high-speed wireless charging technology of the related art, high-speed charging is started while overvoltage may occur during transition

Method used

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  • Wireless power transmitter and operation method thereof
  • Wireless power transmitter and operation method thereof
  • Wireless power transmitter and operation method thereof

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Embodiment Construction

[0074] Hereinafter, an apparatus and various methods to which embodiments are applied will be described in more detail with reference to the accompanying drawings. In consideration of ease of description in the specification, suffixes 'module' and 'unit' are designated or used herein with respect to elements, and the suffixes 'module' and 'unit' do not have mutually distinguishing meanings or roles.

[0075] In the present disclosure below, all elements constituting the embodiment may be described as being coupled to one or to each other to perform operations, but the present invention is not limited to such elements. That is, all elements may be selectively coupled into one or more to operate unless departing from the scope of the purpose of the present invention. In addition, each of all elements may be implemented as an independent piece of hardware, but some or all elements may be selectively combined and implemented as a computer program including program modules implemen...

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Abstract

The invention discloses a wireless power transmitter. The wireless power transmitter comprises a power transmission unit containing a transmitting coil; a power conversion unit for changing the external electric strength; and a control unit for controlling the charging mode and charging capacity of a wireless power receiving device. The charging mode comprises a first charging mode and a second charging mode. The control unit is configured in following ways: based on charging mode grouping execute control received from the wireless power receiving device, the first charging mode is changed tothe second charging mode; based on the received power grouping received from the wireless power receiving device, the operation of detection on a foreign substance is controlled; and when the first charging mode is changed to the second charging mode, the control unit change the operation of detection on the foreign substance. The charging mode grouping comprises at least one of information of time for stopping the operation of foreign substance detection, information of weighted value of received power value of received power grouping, and information of time related with applied weighted value.

Description

technical field [0001] The present invention relates to wireless power transmitters and methods of operation thereof. Background technique [0002] Portable terminals such as cellular phones and notebook computers include batteries that store electric power and circuits for charging and discharging the batteries. When it is desired to charge the battery of the terminal, power should be supplied to the battery from an external charger. [0003] In general, as an example of an electrical connection method between a battery and a charging device for charging electric power into the battery, there may be a terminal supply method of supplying power using general electric power, which converts general electric power into voltage and current corresponding to the battery And power is supplied to the battery through the terminals of the battery. Terminal supply methods use physical cables or wires. Therefore, in the case where the terminal supply method uses many devices, a large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J50/40H02J50/60
CPCH02J7/025H02J50/40H02J50/60H02J50/10H02J50/80H02J50/005H04B5/0037H04B5/0081
Inventor 蔡瑢锡
Owner LG INNOTEK CO LTD
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