CONTACTLESS CHARGING SYSTEM

• US 20120319644A1
• Filed: 06/15/2011
• Published: 12/20/2012
• Est. Priority Date: 06/15/2011
• Status: Abandoned Application

• Current Assignee: Chih-Kuei Hu, Wei-Hua Lu, Wei-Ting Liu
• Original Assignee: Chih-Kuei Hu, Wei-Hua Lu, Wei-Ting Liu
• Inventors: Hu, Chih-Kuei, Liu, Wei-Ting, Lu, Wei-Hua
• Application Number:
  US13/160,549
• Publication Number:
  US 20120319644A1
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/39 with position-responsive activation of primary coils
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/10 using inductive coupling
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/00714 in response to battery charging or discharging current
• CPC Class Codes: H02J 7/007182 in response to battery voltage
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A contactless charging system comprises a charger, a vehicle and a controller. The charger comprises a power supply for providing a first electric power; a first transmitter electrically connected to the power supply and transforming the first electric power into a first electromagnetic energy; and a second transmitter electrically connected to the power supply and transforming the first electric power into a second electromagnetic energy. The vehicle comprises a receiver placed nearby the first transmitter and the second transmitter, for contactlessly receiving the first electromagnetic energy or the second electromagnetic energy, and transforming the first electromagnetic energy or the second electromagnetic energy into a second electric power; and a battery assembled in the vehicle and electrically connected to the receiver for storing the second electric power. The controller selectively enables the first transmitter or the second transmitter according to the charging efficiency.

Claims

1. A contactless charging system, comprising:

a charger, comprising;

a power supply for providing a first electric power;

a first transmitter electrically connected to the power supply and is capable of transforming the first electric power into a first electromagnetic energy; and

a second transmitter electrically connected to the power supply and is capable of transforming the first electric power into a second electromagnetic energy;

a vehicle, comprising;

a receiver placed nearby the first transmitter and the second transmitter, for contactlessly receiving the first electromagnetic energy or the second electromagnetic energy, and transforming the first electromagnetic energy or the second electromagnetic energy into a second electric power; and

a battery assembled in the vehicle and electrically connected to the receiver for storing the second electric power; and

a controller, for selectively enabling the first transmitter or the second transmitter according to a first efficiency between the first transmitter and the receiver and a second efficiency between the second transmitter and the receiver.

2. The contactless charging system of claim 1, wherein the first transmitter and the second transmitter are enabled individually.

3. The contactless charging system of claim 1 further comprising a third transmitter electrically connected to the power supply and is capable of transforming the first electric power into a third electromagnetic energy, wherein the first transmitter and the third transmitter are enabled combinatively.

4. The contactless charging system of claim 1, wherein the receiver further comprises a detector for detecting the first efficiency and the second efficiency.

5. The contactless charging system of claim 1, wherein the controller further comprises a detector for detecting the first efficiency and the second efficiency.

6. A contactless charging system, comprising:

a charger, comprising;

a power supply for providing a first electric power;

a transmitter electrically connected to the power supply and is capable of transforming the first electric power into a electromagnetic energy; and

a vehicle, comprising;

a first receiver placed nearby the transmitter, for contactlessly receiving the electromagnetic energy, and transforming the electromagnetic energy into a second electric power;

a second receiver placed nearby the transmitter, for contactlessly receiving the electromagnetic energy, and transforming the electromagnetic energy into a third electric power; and

a battery assembled in the vehicle and electrically connected to the first receiver and the second receiver for storing the second electric power or the third electric power; and

a controller, for selectively enabling the first receiver or the second receiver according to a first efficiency between the transmitter and the first receiver and a second efficiency between the transmitter and the second receiver.

7. The contactless charging system of claim 6, wherein the first receiver and the second receiver are enabled individually.

8. The contactless charging system of claim 6 further comprising a third receiver electrically connected to the battery and is capable of transforming the electromagnetic energy into a fourth electric power, wherein the first receiver and the third receiver are enabled combinatively.

9. The contactless charging system of claim 6, wherein the first receiver and the second receiver further comprises a detector for detecting the first efficiency and the second efficiency.

10. A contactless charging system, comprising:

a charger, comprising;

a power supply for providing a first electric power;

a movable transmitter, originally located at a first position, and electrically connected to the power supply and is capable of transforming the first electric power into an electromagnetic energy; and

a controller, for moving the movable transmitter to a second position;

a vehicle, comprising;

a receiver placed nearby the transmitter, for contactlessly receiving the electromagnetic energy, and transforming the electromagnetic energy into a second electric power; and

a battery assembled in the vehicle and electrically connected to the receiver for storing the second electric power; and

wherein a second efficiency between the movable transmitter and the receiver at the second position is better than a first efficiency between the movable transmitter and the receiver at the first position.

11. The contactless charging system of claim 10, wherein the movable transmitter further comprises a detector for detecting the first efficiency and the second efficiency.

12. The contactless charging system of claim 10, wherein the controller further comprises a detector for detecting the first efficiency and the second efficiency.

13. A contactless charging system, comprising:

a charger, comprising;

a power supply for providing a first electric power; and

a transmitter electrically connected to the power supply and is capable of transforming the first electric power into an electromagnetic energy;

a vehicle, comprising;

a movable receiver originally located at a first position, for contactlessly receiving the electromagnetic energy, and transforming the electromagnetic energy into a second electric power;

a battery assembled in the vehicle and electrically connected to the receiver for storing the second electric power; and

a controller, for moving the movable receiver to a second position; and

wherein a second efficiency between the transmitter and the movable receiver at the second position is better than a first efficiency between the transmitter and the movable receiver at the first position.

14. The contactless charging system of claim 13, wherein the receiver further comprises a detector for detecting the first efficiency and the second efficiency.

15. The contactless charging system of claim 13, wherein the controller further comprises a detector for detecting the first efficiency and the second efficiency.

16. A contactless charging system, comprising:

a charger, comprising;

a power supply for providing a first electric power; and

a transmitter electrically connected to the power supply and is capable of transforming the first electric power into an electromagnetic energy;

a vehicle, comprising;

a receiver placed nearby the transmitter, for contactlessly receiving the electromagnetic energy, and transforming the electromagnetic energy into a second electric power; and

a battery assembled in the vehicle and electrically connected to the receiver for storing the electric power; and

a user interface, for providing an information to guide a user to move the vehicle to an efficient charging position.

17. The contactless charging system of claim 16, wherein the information comprises a transmitter position icon and a receiver position icon related to positions of the transmitter and the receiver.

18. The contactless charging system of claim 16 further comprising a detector to detect the relative position between the transmitter and the receiver.

19. The contactless charging system of claim 16, wherein the detector is a camera or a photo sensor.

20. The contactless charging system of claim 16, wherein the information is a sound or a light for indicating the relative position of the transmitter and the receiver.