ANTI-THEFT CHARGING SYSTEM

• US 20140049214A1
• Filed: 03/12/2013
• Published: 02/20/2014
• Est. Priority Date: 08/20/2012
• Status: Active Grant

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: Chang, Yu-Ming, Wu, Tsung-Yuan
• Granted Patent: US 9,318,908 B2
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 15/2054 by controlling transmissions or clutches
• CPC Class Codes: B60L 2200/12 Bikes
• CPC Class Codes: B60L 2270/34 of parts
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: G08B 13/1409 for removal detection of electrical appliances by detecting their physical disconnection from an electrical system, e.g. using a switch incorporated in the plug connector
• CPC Class Codes: G08B 13/1427 with transmitter-receiver for distance detection
• CPC Class Codes: G08B 21/0275 Electronic Article Surveillance [EAS] tag technology used for parent or child unit, e.g. same transmission technology, magnetic tag, RF tag, RFID
• CPC Class Codes: G08B 21/0277 Communication between units on a local network, e.g. Bluetooth, piconet, zigbee, Wireless Personal Area Networks [WPAN]
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• 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 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

An anti-theft charging system for charging a chargeable battery of an electric vehicle is disclosed and includes a power supplying device, an output terminal assembly, and a burglarproof detecting device. The power supplying device is used for outputting a charging energy. The output terminal assembly is electrically connected with the power supplying device and detachably coupled to the electric vehicle for receiving and transmitting the charging energy to the chargeable battery. The burglarproof detecting device includes a responding unit and a detecting unit. The responding unit is disposed within the output terminal assembly for issuing a response signal, and the detecting unit is disposed within the power supplying device and in signal connection with the responding unit for detecting the response signal. If the output terminal assembly is stolen, the detecting unit realizes that the output terminal assembly is stolen according to a change of the response signal.

Claims

1. An anti-theft charging system for charging a chargeable battery of an electric vehicle, said anti-theft charging system comprising:

a power supplying device for outputting a charging energy;

an output terminal assembly electrically connected with said power supplying device and detachably coupled to said electric vehicle for receiving and transmitting said charging energy to said chargeable battery; and

a burglarproof detecting device comprising a responding unit and a detecting unit, wherein said responding unit is disposed within said output terminal assembly for issuing a response signal, and said detecting unit is disposed within said power supplying device and in signal connection with said responding unit for detecting said response signal, wherein if said output terminal assembly is separated from said power supplying device, said response signal is changed, and said detecting unit realizes that said output terminal assembly is disconnected with said power supplying device according to a change of said response signal.

2. The anti-theft charging system according to claim 1, wherein said output terminal assembly further comprises a cable group and a charging gun, wherein said cable group is electrically connected between said power supplying device and said charging gun, and said responding unit is disposed within said charging gun.

3. The anti-theft charging system according to claim 2, wherein said responding unit comprises a first resistor, wherein an impedance change of said first resistor constitutes said response signal.

4. The anti-theft charging system according to claim 3, wherein said first resistor is implemented by an impedance of a solenoid switch within said charging gun.

5. The anti-theft charging system according to claim 4, wherein said detecting unit comprises:

an impedance detecting unit electrically connected with said first resistor for outputting a first detecting signal and a second detecting signal, wherein when said anti-theft charging system is in an operating mode, said first detecting signal reflects whether an impedance of said first resistor is changed, wherein when said anti-theft charging system is in a standby mode, said second detecting signal reflects whether an impedance of said first resistor is changed; and

a controlling unit electrically connected with said impedance detecting unit for outputting a control signal to said impedance detecting unit, thereby controlling a corresponding action of said impedance detecting unit, wherein when said anti-theft charging system is in said operating mode, said controlling unit judges whether said output terminal assembly is separated from said power supplying device according to a change of said first detecting signal, wherein when said anti-theft charging system is in said standby mode, said controlling unit judges whether said output terminal assembly is separated from said power supplying device according to a change of said second detecting signal.

6. The anti-theft charging system according to claim 5, wherein said impedance detecting unit comprises a switching circuit, wherein a control terminal of said switching circuit is electrically connected with said controlling unit for receiving said control signal, an input conduction terminal of said switching circuit receives a driving voltage, and an output conduction terminal of said switching circuit is electrically connected with a first end of said first resistor of said solenoid switch, wherein said switching circuit is selectively turned on or turned off according to said control signal, wherein when said switching circuit is turned on, the electric energy of said driving voltage is transmitted to said solenoid switch, thereby enabling said solenoid switch.

7. The anti-theft charging system according to claim 6, wherein said impedance detecting unit further comprises:

a protecting circuit electrically connected with said first end of said first resistor for receiving and transmitting a standby voltage for preventing a reverse current and maintaining said standby voltage when said output terminal assembly is in short-circuit;

a second resistor, wherein a first end of said second resistor, said protecting circuit, said output conduction terminal of said switching circuit and said first end of said first resistor are connected to a first node;

a Zener diode, wherein a cathode of said Zener diode, a second end of said second resistor and said controlling unit are connected to a second node, wherein said second detecting signal is outputted from said second node; and

a third resistor, wherein a first end of said third resistor, said controlling unit, an anode of said Zener diode and a second end of said first resistor are connected to a third node, wherein a second end of said third resistor is connected to a ground terminal, and said first detecting signal is outputted from said third node.

8. The anti-theft charging system according to claim 7, wherein said protecting circuit comprises a first diode, wherein said standby voltage is received by an anode of said first diode.

9. The anti-theft charging system according to claim 8, wherein said protecting circuit comprises a fourth resistor, wherein a first end of said fourth resistor, a cathode of said first diode and a second end of said fourth resistor are electrically connected with said first node.

10. The anti-theft charging system according to claim 6, wherein said switching circuit comprises:

a NPN bipolar junction transistor, wherein a base of said NPN bipolar junction transistor is electrically connected with said controlling unit for receiving said control signal, and an emitter of said NPN bipolar junction transistor is connected with a ground terminal; and

a PNP bipolar junction transistor, wherein a base of said PNP bipolar junction transistor is electrically connected with a collector of said NPN bipolar junction transistor, an emitter of said PNP bipolar junction transistor receives said driving voltage, and an collector of said PNP bipolar junction transistor is connected with said first end of said first resistor of said solenoid switch,

wherein said base of said NPN bipolar junction transistor is said control terminal of said switching circuit, said emitter of said PNP bipolar junction transistor is said input conduction terminal of said switching circuit, and said collector of said PNP bipolar junction transistor is said output conduction terminal of said switching circuit.

11. The anti-theft charging system according to claim 10, wherein said switching circuit further comprises:

a fifth resistor electrically connected within said controlling unit and said base of said NPN bipolar junction transistor; and

a sixth resistor electrically connected between said collector of said NPN bipolar junction transistor and said base of said PNP bipolar junction transistor.

12. The anti-theft charging system according to claim 6, wherein said impedance detecting unit further comprises a second diode, wherein an anode of said second diode is electrically connected with a ground terminal, and a cathode of said second diode is electrically connected with said output conduction terminal of said switching circuit and said first end of said first resistor.

13. The anti-theft charging system according to claim 3, wherein said first resistor is implemented by a thermister, a temperature switch or an additional finite resistance of said charging gun.

14. The anti-theft charging system according to claim 13, wherein said detecting unit comprises:

an impedance detecting unit electrically connected with said first resistor for outputting a third detecting signal, wherein when said anti-theft charging system is in an operating mode or a standby mode, said third detecting signal reflects whether an impedance of said first resistor is changed; and

a controlling unit electrically connected with said impedance detecting unit, wherein when said anti-theft charging system is in said operating mode or said standby mode, said controlling unit judges whether said output terminal assembly is separated from said power supplying device according to a change of said third detecting signal.

15. The anti-theft charging system according to claim 14, wherein said impedance detecting unit comprises a seventh resistor, wherein a first end of said seventh resistor receives a standby voltage, and a second end of said seventh resistor, said first end of said first resistor and said controlling unit are connected with a fourth node, wherein said third detecting signal is outputted from said fourth node.

16. The anti-theft charging system according to claim 1, wherein said detecting unit comprises a reader, wherein said reader comprises a first wireless radio frequency module and a first antenna, wherein said first antenna is electrically connected with a ground terminal, and a transmitting terminal of said first wireless radio frequency module is electrically connected with said first antenna for driving said first antenna to emit a radio frequency signal.

17. The anti-theft charging system according to claim 16, wherein said detecting unit further comprises a controlling unit, wherein said controlling unit is connected with said reader through a communication interface, and said controlling unit is in communication with said first wireless radio frequency module through said communication interface.

18. The anti-theft charging system according to claim 17, wherein said responding unit comprises a receiver, said receiver comprises a second wireless radio frequency module and a second antenna, and said second antenna is electrically connected with said second wireless radio frequency module and said ground terminal, wherein if a distance between said second antenna and said first antenna is smaller than a first safety distance, said second antenna and said first antenna are interacted with each other to result in an electromagnetic coupling effect, thereby enabling said second wireless radio frequency module to issue an information signal, wherein said information signal constitutes said response signal, and said information signal is transmitted to said reader through said second antenna, wherein if said distance between said second antenna and said first antenna is greater than said first safety distance, said information signal fails to be received by said reader, so that said reader issues a notification signal to said controlling unit, wherein in response to said notification signal, said controlling unit judges that said output terminal assembly is separated from said power supplying device.

19. The anti-theft charging system according to claim 1, wherein said detecting unit comprises:

a first Bluetooth module served as a master terminal for issuing a first wireless signal; and

a controlling unit electrically connected with said first Bluetooth module and in communication with said first Bluetooth module.

20. The anti-theft charging system according to claim 19, wherein said responding unit comprises a second Bluetooth module, and said second Bluetooth module is served as a slave terminal, wherein if a distance between said second Bluetooth module and said first Bluetooth module is smaller than a second safety distance, said second Bluetooth module issues a second wireless signal constituting said response signal to said first Bluetooth module according to said first wireless signal, wherein if said distance between said second Bluetooth module and said first Bluetooth module is smaller than said second safety distance, said second wireless signal fails to be received by said first Bluetooth module, so that said first Bluetooth module issues a notification signal to said controlling unit, wherein in response to said notification signal, said controlling unit judges that said output terminal assembly is separated from said power supplying device.

21. The anti-theft charging system according to claim 20, wherein said first Bluetooth module comprises a clock generator for issuing a clock signal.

22. The anti-theft charging system according to claim 21, wherein said first Bluetooth module comprises a Bluetooth control chip for issuing said first wireless signal, wherein said Bluetooth control chip is electrically connected with said clock generator and said controlling unit, wherein an action of said Bluetooth control chip is determined according to said clock signal and said Bluetooth control chip is in communication with said controlling unit.

23. The anti-theft charging system according to claim 22, wherein said first Bluetooth module comprises a storage memory electrically connected with said Bluetooth control chip for allowing said Bluetooth control chip to stores data into said storage memory or read data from said storage memory.

24. The anti-theft charging system according to claim 23, wherein said first Bluetooth module comprises:

a Balun electrically connected with said Bluetooth control chip;

a filter electrically connected with said Balun for filtering said first wireless signal; and

an antenna electrically connected with said filter.

25. The anti-theft charging system according to claim 20, wherein said first Bluetooth module and said second Bluetooth module are operated in an ISM 2.4 GHz spectrum, and said first Bluetooth module and said second Bluetooth module are interacted with each other to read information through wireless radio frequency by a FHHS frequency-hopping method.