Non-contact charger available of wireless data and power transmission, charging battery-pack and mobile device using non-contact charger

• US 7,791,312 B2
• Filed: 10/25/2006
• Issued: 09/07/2010
• Est. Priority Date: 10/24/2006
• Status: Active Grant

• Current Assignee: GE Hybrid Technologies, LLC
• Original Assignee: Hanrim Postech Co., Ltd.
• Inventors: Kook, Yoon-Sang
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US11/817,929
• Publication Number:
  US 20090261778A1
• Time in Patent Office: 1,413 Days
• Field of Search: 320/107, 320/108, 320/112, 320/114, 320/115, 320/157, 320/158, 320/162, 320/163, 455/73
• US Class Current: 320/108
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• 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

Disclosed is a non-contact charger. The present invention provides a non-contact charger capable of wireless data communication and power supply between a non-contact charger capable of computer UBS communication and a charging battery-pack of a mobile device, using an induced electromotive force, thereby to enable data communication and power supply at the same time and to make good signal transmission without other poor contacts in the contact transmission.

Claims

1. A non-contact charger capable of wireless data communication and power transmission, comprising:

a USB connector provided in one side of an enclosed device body to attachably and detachably couple with a USB port of a computer or a notebook computer using a jack;

a USB driver block coupled to the USB connector and emulated with a USB protocol to receive and transmit data from and to the computer or the notebook computer;

an MPU block coupled to the USB connector to control a serial resonator converter, a current sensing block and a power supply member, each for receiving a power source from the computer or the notebook computer and supplying the received power source to a mobile device, or receiving and transmitting data from and to the computer or the notebook computer; and

a primary coil formed on the device body to generate an induced electromotive force so as to wirelessly transmit a data signal and a power signal from the serial resonator converter to the mobile device,

wherein the serial resonator converter converts the data signal received and transmitted between the USB driver block and the mobile device and the power signal supplied from the USB connector 10 to the mobile device, and sums up the converted data and power signals, and

wherein the current sensing block analyzes a signal of the secondary coil to recognize the mobile device, monitors the primary coil and the secondary coil to control a charge voltage to a stable voltage, and transmits a signal of the MPU block, the signal of the secondary coil being transmitted from the primary coil that senses a load regulation signal by means of the secondary coil corresponding to the primary coil and arranged in the mobile device.

2. The non-contact charger capable of wireless data communication and power transmission according to claim 1,

wherein the primary coil is composed of any one of FPCB, PCB, coil and ferrite core in a detachable transformer, and formed in a circular, tetragonal or polygonal shape,

wherein the serial resonator converter is a LLC full-bridge serial resonator converter which is a serial &

parallel resonator converter in half wave type or full wave type.

3. The non-contact charger capable of wireless data communication and power transmission according to claim 1, further comprising:

a gate drive block provided between the USB driver block and the serial resonator converter, and the MPU block and the serial resonator converter and having a bootstrap gate driver; and

a display unit for receiving a signal from the primary coil to display a charging level of a rechargeable battery through the control of the MPU block, the primary coil sensing a signal of the charging level of the rechargeable battery from the signal of the secondary coil.

4. The non-contact charger capable of wireless data communication and power transmission according to claim 1, further comprising:

a thermal protection safety block for sensing an internal temperature of the device body, determining a temperature of the primary coil and transmitting a signal to the MPU block for the purpose of the circuit cutoff;

a bimetal coupled in series to the primary coil to intercept a current flow when a current excessively flows in the primary coil or the internal temperature is increased excessively;

a dust and smell sensor circuit for sensing dusts and smells inside the device body; and

an ionizer high voltage drive circuit control block for generating anions and spraying an antimicrobial spray for the bacterial eradication.

5. The non-contact charger capable of wireless data communication and power transmission according to claim 1,

wherein the current sensing block further has a foreign substance detection function that is to give an ID to a data signal and a power signal to continuously transmit the data signal and the power signal if constant intervals of a PWM pulse are generated in the primary coil and the detected signal from the secondary coil which is in response of the constant intervals of the PWM pulse is detected as a normal signal, or to sense the detected signal as the foreign substance to suspend the transmission of the data signal and the power signal if there is no response or the detected response signal is not a normal signal.

6. The non-contact charger capable of

wireless data communication and power transmission according to claim 1,

wherein the USB driver block further comprises:

an IrDA signal converter for converting a data signal into USB protocol and IrDA;

an IrDA port for transmitting and receiving the data signal, converted to the IrDA by the IrDA signal converter, to and from the mobile device through the control of the MPU block; and

a mobile device ID detector for sensing and identifying a unique ID of the mobile device.

7. A charging battery-pack, comprising:

a charger body capable of being in contact with one side of the charge body of the non-contact charger as defined in claim 1, transmitting and receiving a data signal by means of a magnetic field in no contact with the primary coil 70 and having the secondary coil 80 provided in one side thereof and receiving a power signal;

a charger controller coupled to the secondary coil arranged in one inner side of the charger body to process a power signal transmitted from the primary coil and transmit the process power signal to rechargeable battery and to process a data signal transmitted and received to and from the primary coil; and

a charge management block for transmitting a charging power to the rechargeable battery through the control of the charger controller,

wherein the charge management block supplies a power source of the rechargeable battery to the mobile device.

8. The charging battery-pack according to claim 7,

wherein the charger controller comprises:

a unique ID unit for transmitting a unique ID to the non-contact charger through the secondary coil 80 and the primary coil if the initial connection is sensed from the non-contact charger; and

a charge detector circuit for sensing a charging level of the rechargeable battery to transmit a power source to the non-contact charger.

9. The charging battery-pack according to claim 7,

wherein the charger body comprises separated packs formed separately to attachably detachably couple with the mobile device, or integrated packs formed integrally to be arranged inside a body case of the mobile device, and

wherein the secondary coil is composed of any one of FPCB, PCB, coil and ferrite core of a detachable transformer, and formed in a circular, tetragonal or polygonal shape.

10. The charging battery-pack according to claim 9,

wherein the charger body of the separated pack further comprises a device block for supplying a power source of the rechargeable battery to the mobile device through the control of the charger controller.

11. The charging battery-pack according to claim 8,

wherein the charger body comprises:

a battery cell for charging a power through a wireless power receiver circuit, the power being induced from a secondary coil wound into a charge receiver module;

shield plates surrounding a bottom surface and four front, rear, left and right surfaces of the battery cell and composed of Al, Cu, or Ni alloy metals to protect the battery cell form a magnetic field;

a magnetic plate provided between the shield plate and the charge receiver module and composed of ferrites, Mn—

Zn (50 parts by weight;

50 parts by weight), Ni—

Fe (80 parts by weight;

20 parts by weight), or fine metals (Fe—

Si—

Cu—

Nb) to easily induce the induced magnetic field into a secondary coil;

an insulating board composed of meshes and insulators to prevent the heat of the shield plate from being conducted into the battery cell, the meshes being made of NI—

Cu provided between the shield plate and the battery cell and the insulators being able to release the heat and reduce heat conduction;

a shield member surrounding the wireless power receiver circuit and composed of Al, Cu, or Ni alloy metals to shield a magnetic field against the wireless power receiver circuit.

12. A mobile device using the a non-contact charger, characterized in that it receives a power source from the non-contact charger as defined in claim 7 and transmits and receives data.

13. A mobile device using a non-contact charger, comprising:

a power reception device block electrically contacted with the device block of the charging battery-pack as defined in claim 8 to receive a power source;

a DC/DC converter coupled to the power reception device block to convert an electric power; and

a charge block for charging the electric power converted in the DC/DC converter.

14. A mobile device, comprising a charging battery-pack contained therein and an IrDA port for communicating data with an IrDA controller and an IrDA port of a non-contact charger, wherein the charging battery-pack comprises a charger body of an integrated pack.