Wireless Power Charging System

• US 20090140690A1
• Filed: 06/26/2008
• Published: 06/04/2009
• Est. Priority Date: 11/30/2007
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Jung, Chun-Kil
• Application Number:
  US12/147,071
• Publication Number:
  US 20090140690A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H02J 7/00045 Authentication, i.e. circuits for checking compatibility between one component, e.g. a battery or a battery charger, and another component, e.g. a power source
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/0048 Detection of remaining charge capacity or state of charge [SOC]
• CPC Class Codes: H02J 7/00712 the cycle being controlled or terminated in response to electric parameters
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04B 5/0037 for power transfer
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

A wireless power charging system has a wireless power transmission apparatus formed to charge a plurality of wireless power receiving apparatuses located in a short distance therefrom, wherein the total charging time for the wireless power receiving apparatuses is saved. The wireless power transmission apparatus has a main control unit and a resonant converter unit, which transmit the electric signal to the wireless power receiving apparatus via the resonance signal generated from a primary charge core in order to charge the wireless power receiving apparatuses. The wireless power transmission apparatus also includes an output signal conversion module for transmitting a converted electric signal to the resonant converter unit and a received signal process module for processing a signal transmitted from the wireless power receiving apparatus.

Claims

1. A wireless power charging system for charging one or a plurality of wireless power receiving apparatuses in a short distance from a wireless power transmission apparatus, wherein the wireless power transmission apparatus comprises:

a power transmission apparatus case as an outside body housing a main control unit and a resonant converter unit, which transmit an electric signal to the wireless power receiving apparatus via a resonance signal generated from a primary charge core;

an output signal conversion module for transmitting the converted electric signal to the resonant converter unit by the control signal from the main control unit; and

a received signal process module, which processes a signal transmitted from the wireless power receiving apparatus via the primary charge core and sends the processed signal out to the main control unit.

2. The wireless power charging system according to claim 1, wherein the resonant converter unit includes an R-L-C series-parallel resonant converter.

3. The wireless power charging system according to claim 1, wherein the power transmission apparatus case includes:

a power on/off switch on a front side thereof;

an input panel for signal input; and

a display panel showing the charging status of the wireless power receiving apparatus and normal/abnormal status of the wireless power transmission apparatus, and

wherein the power transmission apparatus further comprises a power supply unit installed inside the power transmission apparatus case.

4. The wireless power charging system according to claim 1, wherein the main control unit includes

a power supply block connected with the power supply unit for power supply to the wireless power transmission apparatus;

a signal output block for sending a signal to show the status on a display panel;

a gate output signal process block coupled with an output signal conversion module for transmitting a power signal transferred from the primary charge core;

a received signal process block for processing a signal transmitted from a received signal process module, which processes the signal transmitted from the wireless power receiving apparatus; and

a main controller which controls the power supply block, the signal output block, the gate output signal process block, and the received signal process block.

5. The wireless power charging system according to claim 1, wherein the wireless power receiving apparatus includes:

a secondary charge core fronting the primary charge core of the wireless power transmission apparatus in order to receive a power signal via the resonant with the magnetic field;

a received power signal conversion module connected with the secondary charge core for converting the received power signal;

a charge circuit block linked with the received power signal conversion module in order to charge the battery cell;

a protection circuit block formed between the charge circuit block and the battery cell for detecting the charged current into the battery cell and sending the charging status of the battery cell to the wireless device control module;

a voltage regulator block for the power supply to the wireless device control module; and

a wireless device control module, which controls the received power signal conversion module, the charge circuit block, the protection circuit block, and the voltage regulator block.