WIRELESS CHARGING SYSTEM FOR VARIABLE CHARGING MODE

• US 20160064997A1
• Filed: 12/15/2014
• Published: 03/03/2016
• Est. Priority Date: 08/27/2014
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.), LG Innotek Company Limited (LG Corporation)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.), LG Innotek Company Limited (LG Corporation)
• Inventors: HUR, Nam Woong, JEON, Seul Ki, KIM, Sin Gu, SON, Jeong Nam, JUNG, Woo Kil, LEE, Yun Bok, CHAE, Yong Suk
• Granted Patent: US 9,742,216 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• 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 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A wireless charging system for a variable charging mode includes: an information receiver configured to receive information about a wireless power receiver including a wireless charging mode that is supported by the wireless power receiver through a wireless communication connected to the wireless power receiver; wireless power transmitting units configured to wirelessly transmit power by a plurality of different wireless charging modes; and a controller configured to control the wireless power transmitting units to wireless transmit power by the wireless charging mode corresponding to the received information.

Claims

1. A wireless charging system for a variable charging mode, comprising:

an information receiver configured to receive information about a wireless power receiver including a wireless charging mode that is supported by the wireless power receiver through a wireless communication connected to the wireless power receiver;

wireless power transmitting units configured to wirelessly transmit power by a plurality of different wireless charging modes; and

a controller configured to control the wireless power transmitting units to wireless transmit power by a wireless charging mode corresponding to the received information.

2. The wireless charging system according to claim 1, wherein the wireless power transmitting units include wireless power transmitters configured to wirelessly transmit power depending on at least two wireless charging modes of a wireless power consortium (WPC) mode, a power matters alliance (PMA) mode, and an alliance for wireless power (A4WP) mode, which are included in a wireless charging standard;

and

a switching unit configured to switch the wireless charging mode to one of the at least two wireless charging modes depending on a control of the controller.

3. The wireless charging system according to claim 2, wherein when the wireless charging mode switched by the switching unit is the WPC and the PMA, the wireless charging mode uses ping of in-band communication to sense whether the wireless power receiver contacts the wireless power transmitting units and a state of the wireless power receiver, and the wireless power transmitting units to wirelessly transmit power.

4. The wireless charging system according to claim 2, wherein when the wireless charging mode switched by the switching unit is the A4WP, the wireless charging mode uses Bluetooth low energy (BLE) to provide a communication between the wireless power receiver and the wireless power transmitting units.

5. The wireless charging system according to claim 1, wherein the wireless power receiver is a mobile terminal carried by a passenger of a vehicle,

the information receiver includes a head unit and a receiver, which are equipped in the vehicle,

the controller is a micro controller unit (MCU), which is equipped in the vehicle, and

the head unit transmits information received from the receiver to the MCU through a vehicle communication controller area network (CAN)/local interconnect network (LIN).

6. The wireless charging system according to claim 1, wherein the wireless communication connected to the wireless power receiver is a Bluetooth communication or a WiFi communication.

7. The wireless charging system according to claim 1, wherein the wireless power receiver is a mobile terminal carried by a passenger of a vehicle,

the information receiver includes a near field communication (NFC) reader in the vehicle,

the controller is a micro controller unit (MCU) which is equipped in the vehicle, and

the mobile terminal includes an application using NFC communication to transmit information.

8. The wireless charging system according to claim 7, wherein the charging mode corresponding to the received information is A4WP, and

when pairing of the A4WP fails, power is wirelessly transmitted by pairing through the NFC using the NFC reader and the application.

9. The wireless charging system according to claim 1, wherein when the wireless power receiver supports the plurality of different wireless charging modes,

the controller controls the wireless power transmitting units to sequentially apply the plurality of different wireless charging modes based on preset priority to wirelessly transmit power to the wireless power receiver.

10. The wireless charging system according to claim 9, further comprising:

a memory unit configured to store wireless transmission efficiency, and

wherein the controller is configured depending on the plurality of different modes to calculate the wireless transmission efficiency of power wirelessly transmitted.

11. The wireless charging system according to claim 10, wherein when the information receiver receives the information on the wireless power receiver corresponding to the wireless transmission efficiency stored in the memory unit,

the controller controls the wireless power transmitting units to wirelessly transmit power to the wireless power receiver by a wireless charging mode having highest wireless transmission efficiency among the plurality of different wireless charging modes based on the wireless transmission efficiency stored in the memory unit.