Anti-theft charging system

Patent metadata

Field	Value
Publication number	US-9318908-B2
Application number	US-201313797005-A
Country	US
Kind code	B2
Filing date	Mar 12, 2013
Priority date	Aug 20, 2012
Publication date	Apr 19, 2016
Grant date	Apr 19, 2016

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 disposed within the output terminal assembly for issuing a response signal and a detecting unit 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.

First claim

What is claimed is:

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 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;
wherein said responding unit comprises a first resistor, wherein an impedance change of said first resistor constitutes said response signal;
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.

2. The anti-theft charging system according to claim 1 , wherein said first resistor is implemented by an impedance of a solenoid switch within said charging gun.

3. The anti-theft charging system according to claim 2 , 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.

4. The anti-theft charging system according to claim 3 , 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.

5. The anti-theft charging system according to claim 4 , wherein said protecting circuit comprises a first diode, wherein said standby voltage is received by an anode of said first diode.

6. The anti-theft charging system according to claim 5 , 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.

7. The anti-theft charging system according to claim 3 , 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.

8. The anti-theft charging system according to claim 7 , 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.

9. The anti-theft charging system according to claim 3 , 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.

Assignees

• Delta Electronics Inc

Inventors

• Chang Yu-Ming
• Wu Tsung-Yuan

Classifications

• Y02T10/72

  Electric energy management in electromobility · CPC title

• B60L15/20

  for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed · CPC title

• Y02T10/7275

  Cross-Sectional Technologies · mapped topic

• H02J7/0047 Primary

  Electricity · mapped topic

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title