Wireless multi-charger system and controlling method thereof

Patent metadata

Field	Value
Publication number	US-RE46392-E
Application number	US-201414457095-A
Country	US
Kind code	E1
Filing date	Aug 11, 2014
Priority date	Nov 30, 2007
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

Disclosed are a wireless multi-charger system capable of saving the total charging time of a large number of wireless power transmission devices since one wireless multi-power transmission device includes a plurality of the wireless power transmission devices so that a large number of the wireless power transmission devices can be charged with electricity, and preventing the damage of the wireless power transmission devices and the wireless multi-power transmission device although foreign substances are put on charger blocks that are not charged. The wireless multi-charger system (A) according to the present invention includes an external body formed as a wireless charger case 11, wherein the wireless charger case 11 has a wireless charger table 12 formed in an upper surface thereof, wherein the wireless charger table 12 has a plurality of charger blocks 14, each of which includes a primary charging core 13, wherein the full-bridge resonant converter 22 is present in a plural form and coupled respectively to a plurality of the charger blocks 14, wherein a multi-gate driver module 23 is provided to transmit a converted power signal to each of a plurality of the full-bridge resonant converters 22 under the control of the central controller 21, and wherein a reception signal processor module 24 coupled to a plurality of the charger blocks 14 to process a signal transmitted from the wireless power transmission device 30 and supply the processed signal to the central controller 21 is provided.

First claim

The invention claimed is:

1. A wireless multi-charger system comprising a wireless multi-power transmission device for transmitting a power signal to a wireless power transmission device in a wireless manner,
wherein the wireless multi-power transmission device include a wireless charger case formed as an external body, the wireless charger case having a full-bridge resonant converter and a central controller mounted thereinside to transmit a power signal to the wireless power transmission device in a wireless manner, wherein the wireless charger case has a wireless charger table formed in an upper surface thereof, wherein the wireless charger table has a plurality of charger blocks, each of which includes a primary charging core, wherein the full-bridge resonant converter is present in a plural form and coupled respectively to a plurality of the charger blocks, wherein a multi-gate driver module is provided to transmit a converted power signal to each of a plurality of the full-bridge resonant converters under the control of the central controller, wherein a reception signal processor module coupled to a plurality of the charger blocks to process a signal transmitted from the wireless power transmission device and supply the processed signal to the central controller is provided, and wherein the central controller comprises:
a power supply block coupled to the power supply unit to supply a power source of the wireless multi-power transmission device;
a signal output block for outputting a display signal into an LCD panel and a charging LED;
a gate output signal processor block coupled to the multi-gate driver module to transmit a power signal transmitted from the primary charging core;
a received signal processor block coupled to one side of the primary charging core for processing a signal transmitted from the reception signal processor module for processing a signal transmitted from the wireless power transmission device; and
a main controller for controlling the power supply block, the signal output block, the gate output signal processor block and the received signal processor block.

2. The wireless multi-charger system according to claim 1 , wherein the central controller controls the request for data information on charging capacity to the wireless power transmission device, receives data of the information on charging capacity and data of the power signal voltage transmitted from the wireless power transmission device to determine voltage data of the transmitted power signal, performs an arithmetic operation on the frequency of the power signal to compensate for a transmitted power relative to the voltage data of the power signal of the determined wireless power transmission device, and controls the transmission of the power signal as the compensated frequency to transmit a compensated power signal to the wireless power transmission device.

3. A method for controlling a wireless multi-charger system as defined in claim 1 , comprising:
transmitting a power signal via the primary charging core from wireless multi-power transmission device of the wireless multi-charger system in every cycle, the power signal including a call signal for calling a native ID value of the wireless power transmission device, and waiting for the receipt of a response signal for the power signal; determining the presence of an object by checking a detected detection signal according to load modulation in the primary charging core of one of the charger blocks and determining whether the detected detection signal is a normal signal; determining whether a native ID signal of the wireless power transmission device is received by analyzing the detected reception signal; transmitting a fully charged transmission power from the primary charging core of the corresponding charger block via the multi-gate driver module when the received native ID signal is determined to be a native ID transmitted from the wireless power transmission device; requesting information on the charging state to the wireless power transmission device and adjusting a charging level according to the charging information of the wireless power transmission device; displaying a fully charged state in the LCD panel or the charging LED corresponding to the corresponding charger block and stopping a charging operation when the information on the fully charged state is received from the wireless power transmission device.

4. The method for controlling the wireless multi-charger system according to claim 3 , wherein the object detection step comprises: converting a plurality of the charger blocks into a foreign substance detection mode when a detection signal detected through the corresponding primary charging core and the reception signal processor module according to the load modulation generated by objects is not a normal signal, displays a foreign substance error in the LCD panel or the charging LED when the detected foreign substance is a metal or electronic equipment, and stops a charging operation on the corresponding charger block.

5. The method for controlling the wireless multi-charger system according to claim 3 , wherein the charging control step comprises:
requesting data information on the charging capacity to the wireless power transmission device; receiving data information on the charging capacity and the voltage data of the power signal transmitted from the wireless power transmission device; determining the voltage data of the power signal transmitted from the wireless power transmission device; performing an arithmetic operation on a frequency of the power signal to compensate for the transmitted power for the voltage data of the power signal transmitted from the wireless power transmission device; transmitting a power signal as a compensated frequency to transmit a compensated power signal to the wireless power transmission device.

6. A method for controlling the wireless multi-charger system as defined in claim 2 , comprising:
transmitting a power signal via the primary charging core from the wireless multi-power transmission device of the wireless multi-charger system in every cycle, the power signal including a call signal for calling a native ID value of the wireless power transmission device, and waiting for the receipt of a response signal for the power signal; determining the presence of an object by checking a detected detection signal according to load modulation in the primary charging core of one of the charger blocks and determining whether the detected detection signal is a normal signal; determining whether a native ID signal of the wireless power transmission device is received by analyzing the detected reception signal; transmitting a fully charged transmission power from the primary charging core of the corresponding charger block via the multi-gate driver module when the received native ID signal is determined to be a native ID transmitted from the wireless power transmission device; requesting information on the charging state to the wireless power transmission device and adjusting a charging level according to the charging information of the wireless power transmission device; displaying a fully charged state in an LCD panel or a charging LED corresponding to the corresponding charger block and stopping a charging operation when the information on the fully charged state is received from the wireless power transmission device.

7. The wireless multi-charger system according to claim 1 , wherein the LCD panel is configured to display a total charging state of the plurality of the charger blocks, and the charging LED is configured to display a charging state of each of the plurality of the charger blocks.

8. A wireless multi-charger system comprising a wi

Assignees

• Intel Corp

Inventors

• Jung Chun-Kil

Classifications

• H02J7/50

  acting upon multiple batteries simultaneously or sequentially · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• H02J50/12

  of the resonant type · CPC title

• H02J50/60

  responsive to the presence of foreign objects, e.g. detection of living beings · CPC title

• H02J50/90

  involving detection or optimisation of position, e.g. alignment · CPC title