CN207502657U - The detection device of PE lines, conduction charging system and electric vehicle in supply network - Google Patents

Abstract

The utility model discloses the detection device of PE lines, conduction charging system and electric vehicle in a kind of supply network, including firewire, zero curve and the PE lines in detection device, controller, leakage current simulator and leak current detection device.The input terminal of leakage current simulator is connect with controller, first output terminal of leakage current simulator is connect with firewire or zero curve, the second output terminal of leakage current simulator is connect with PE lines, firewire connects with zero curve or across leak current detection device, or leak current detection device is connected in the circuit of leakage current simulator, the output terminal of leak current detection device is connect with controller；Controller control leakage current simulator generates leakage current, and leak current detection device generates signal when detecting leakage current, and when the signal value of generation is in the range of controller preset signals value, PE lines are effective.By detecting whether PE lines are effective, ensure personal safety of the user when electrical equipment, conduction charging system and electric vehicle is used to charge.

Description

The detection device of PE lines, conduction charging system and electric vehicle in supply network

Technical field

The utility model is related to power supply technique fields, more particularly to a kind of detection device of PE lines in supply network, pass Lead charging system and electric vehicle.

Background technology

With the development of power supply technique, electrical equipment is popularized, and the safety of electricity consumption becomes asking for user's common concern Topic.When the electrical equipment that user is commonly used surprisingly is charged, electrical equipment would generally be by connecing the ground wire in supply network, i.e., PE (protective conductor protect conductor) line, so as to form short circuit current, is discharged over the ground using electric equipment, human body Danger Electric shock risk occurs for the electrical equipment that just will not contact electrification.As it can be seen that the PE lines in supply network are to protection user power utilization safety It is most important.

However, due to different regions, the power supply mode of the supply network of different geographical is different, and there are no known to any one Mode, can use a kind of detection device be suitable for different power supply modes supply network PE lines detect, to ensure user Electrical Safety.Simultaneously as electricity consumption is duration, it can automatically continuously detect whether PE lines effectively become to protect use The emphasis of family Electrical Safety.However, there are no mode known to any one, reliably automatic continuous property detection can be reached and supplied Whether electric network PE lines effectively require.Therefore, how the skill that a kind of scheme for solving above-mentioned technical problem is this field is provided Art personnel need urgent problem to be solved at present.

With popularizing for electric vehicle, the Electrical Safety problem for conducting charging system and electric vehicle user is more and more prominent. Charging safety accident caused by conduction charging system and electric vehicle charge happens occasionally.So far, there are no one kind Whether the conduction charging system and electric vehicle known, the supply network end PE lines that power supply mode not of the same race can be effectively detected have Effect, to ensure that user's is safe to use.Simultaneously as charging is duration, whether effective PE lines can be automatically continuously detected Become the emphasis in order to protect user power utilization safety.However, any one is known not yet conducts charging system and electric vehicle, The requirement that automatic reliably duration detection supply network PE lines whether there is can be reached.Therefore, it is above-mentioned how to provide a kind of solution The conduction charging system and electric vehicle of technical problem are that those skilled in the art urgently needs to solve at present.

Utility model content

The purpose of this utility model is to provide the detection device of PE lines in a kind of supply network, conduction charging system and electronic Vehicle, whether effective, to ensure the safety of user if can detect PE lines in supply network with automatic continuous property.

In order to solve the above technical problems, the utility model provides a kind of detection device of PE lines in supply network, the inspection It surveys device and includes firewire, zero curve and PE lines in the detection device, controller, leakage current simulator and leakage current test dress It puts；

The firewire, the zero curve, the PE lines are used to connect with supply network and electrical equipment.

Preferably, the input terminal of the leakage current simulator is connect with the controller, the leakage current simulator The first output terminal connect with the firewire or zero curve, the second output terminal of the leakage current simulator and the PE lines connect It connects；

The firewire connects the leak current detection device or the firewire with the zero curve and the zero curve passes through institute Leak current detection device is stated, the output terminal of the leak current detection device is connect with the controller；The controller is used to control The leakage current that the leakage current simulator generates simulation is made, the leak current detection device is used to detect described in simulation Signal is generated during leakage current, when the signal value of generation is when in the range of the preset signal value of the controller, determines the PE Line is effective, when the signal value of generation is not when in the range of the preset signal value of the controller, determines that the PE lines are invalid.

Preferably, the input terminal of the leakage current simulator is connect with the controller, the leakage current simulator The first output terminal connect with the firewire or zero curve, the second output terminal of the leakage current simulator and the PE lines connect It connects；

The leak current detection device is connected in the circuit of the leakage current simulator, the leak current detection device Output signal feed back to the controller；The controller is used for the electric leakage that the leakage current simulator is controlled to generate simulation Stream, the leak current detection device in the leakage current for detecting simulation for generating signal, when the signal value of generation exists When in the range of the preset signal value of controller, determine that the PE lines are effective, when the signal value of generation is not in the control When in the range of the preset signal value of device, determine that the PE lines are invalid.

Preferably, which further includes firewire controllable switch driving circuit and firewire controllable switch, wherein：

The controller is connect with the firewire controllable switch driving circuit, the drive of the firewire controllable switch driving circuit Moved end is connect with the control terminal of the firewire controllable switch, the first end of the firewire controllable switch and the input terminal of the firewire Connection, the second end of the firewire controllable switch are connect with the output terminal of the firewire；The controller is used for through the fire Line controllable switch driving circuit controls the disconnection or conducting of the firewire controllable switch, described in order to be correspondingly turned off or connect Firewire.

Further, the firewire controllable switch is bidirectional triode thyristor, described in the control pole of the bidirectional triode thyristor is used as The control terminal of firewire controllable switch, the first end of the first main electrode of the bidirectional triode thyristor as the firewire controllable switch, Second end of second main electrode of the bidirectional triode thyristor as the firewire controllable switch；Or the firewire controllable switch is Relay, control terminal of the relay coil as the firewire controllable switch, the first end of the relay switch contacts As the first end of the firewire controllable switch, the second end of the relay switch contacts is as the firewire controllable switch Second end.

Preferably, which further includes zero curve controllable switch driving circuit and zero curve controllable switch, wherein：

The controller is connect with the zero curve controllable switch driving circuit, the drive of the zero curve controllable switch driving circuit Moved end is connect with the control terminal of the zero curve controllable switch, the first end of the zero curve controllable switch and the input terminal of the zero curve Connection, the second end of the zero curve controllable switch are connect with the output terminal of the zero curve；The controller can by the zero curve Controlling switch driving circuit controls the zero curve controllable switch to disconnect or be connected, in order to be correspondingly turned off or connect the zero curve.

Further, the zero curve controllable switch is bidirectional triode thyristor, described in the control pole of the bidirectional triode thyristor is used as The control terminal of zero curve controllable switch, the first end of the first main electrode of the bidirectional triode thyristor as the zero curve controllable switch, Second end of second main electrode of the bidirectional triode thyristor as the zero curve controllable switch；Or the zero curve controllable switch is Relay, control terminal of the relay coil as the zero curve controllable switch, the first end of the relay switch contacts As the first end of the zero curve controllable switch, the second end of the relay switch contacts is as the zero curve controllable switch Second end.

Preferably, which further includes PE line controllable switch driving circuits and PE line controllable switches, wherein：

The controller is connect with the PE lines controllable switch driving circuit, the drive of the PE lines controllable switch driving circuit Moved end is connect with the control terminal of the PE lines controllable switch, the first end of the PE lines controllable switch and the input terminal of the PE lines Connection, the second end of the PE lines controllable switch are connect with the output terminal of the PE lines；The controller can by the PE lines Controlling switch driving circuit controls the PE lines controllable switch to disconnect or be connected, in order to be correspondingly turned off or connect the PE lines.

Further, the PE lines controllable switch is bidirectional triode thyristor, described in the control pole of the bidirectional triode thyristor is used as The control terminal of PE line controllable switches, the first end of the first main electrode of the bidirectional triode thyristor as the PE lines controllable switch, Second end of second main electrode of the bidirectional triode thyristor as the PE lines controllable switch；Or the PE lines controllable switch is Relay, control terminal of the relay coil as the PE lines controllable switch, the first end of the relay switch contacts As the first end of the PE lines controllable switch, the second end of the relay switch contacts is as the PE lines controllable switch Second end.

Preferably, the leak current detection device includes the current sense connected respectively on the firewire and the zero curve Device.

Preferably, the leak current detection device is leakage current sensor, and the zero curve and the firewire both pass through described Leakage current sensor.

Preferably, the PE lines are not passed through the leakage current sensor.

Preferably, the PE lines pass through the leakage current sensor, and the PE lines pass through the leakage current sensor Direction passes through the direction of the leakage current sensor opposite with the firewire and zero curve.

Preferably, which further includes leak current detection device self-checking circuit, the leak current detection device self-test The first end of circuit is connect with the self-test end of the controller, the second end of the leak current detection device self-checking circuit with it is described The self-checking function end connection of leak current detection device, the controller are used to send out by the leak current detection device self-checking circuit Self-test signal is sent to the leak current detection device, when the letter of leak current detection device feedback that the controller receives When number in the range of preset feedback signal, the leak current detection device is normal, otherwise, the leak current detection device therefore Barrier.

Preferably, the leak current detection device self-checking circuit includes resistance and self-test coil, the first end of the resistance As the first end of the leak current detection device self-checking circuit, the second end of the resistance and the first end of the self-test coil Connection, the second end of the second end of the self-test coil as the leak current detection device self-checking circuit.

Preferably, which further includes operational amplification circuit, wherein：

The input terminal of the operational amplification circuit is connect with the output terminal of the leak current detection device, the operation amplifier The output terminal of circuit is connect with the controller, and the operational amplification circuit is used for the letter generated to the leak current detection device Number carry out ratio enlargement.

Preferably, which further includes filter circuit, wherein：

The input terminal of the filter circuit is connect with the output terminal of the leak current detection device, the filter circuit it is defeated Outlet is connect with the controller, and the signal that the filter circuit is used to generate the leak current detection device is filtered place Reason.

Preferably, which further includes operational amplification circuit and filter circuit, wherein：

The input terminal of the operational amplification circuit is connect with the output terminal of the leak current detection device, the operation amplifier The output terminal of circuit is connect with the input terminal of the filter circuit, and the output terminal of the filter circuit is connect with the controller, The operational amplification circuit is used to carry out ratio enlargement to the signal that the leak current detection device generates, and the filter circuit is used It is filtered in the signal generated to the leak current detection device.

Preferably, the leakage current simulator includes photoelectrical coupler, wherein, the photoelectrical coupler includes luminous two Pole pipe and phototriode, the photoelectrical coupler are used to cut off or connect the access of leakage current.

Preferably, the leakage current simulator further includes DC power supply, first resistor, second resistance, first controllably opens It closes, wherein：

The first end of the first resistor is connect with the DC power output end, the second end of the first resistor and institute The anode connection of light emitting diode is stated, the cathode of the light emitting diode is connect with the first end of first controllable switch, institute State the first controllable switch second terminates electrically, and the control terminal of first controllable switch is as the leakage current simulator Input terminal, the collector of the phototriode connect with the first end of the second resistance, the hair of the phototriode Second output terminal of the emitter-base bandgap grading as the leakage current simulator, the second end of the second resistance is as the electric leakage flow field simulation First output terminal of device.

Preferably, the leakage current simulator includes magnetic coupler, and the magnetic coupler is used to cutting off or connecting electric leakage The access of stream.

Preferably, the leakage current simulator further includes triode, 3rd resistor, the 4th resistance, wherein：

Input terminal of the input terminal of the magnetic coupler as the leakage current simulator, the output of the magnetic coupler End is connect with the first end of the 4th resistance, and the second end of the 4th resistance is connect with the base stage of the triode, described The collector of triode is connect with the 3rd resistor first end, and the emitter of the triode is as the electric leakage flow field simulation dress The second output terminal put, the first output terminal of the second end of the 3rd resistor as the leakage current simulator.

Preferably, the leakage current simulator includes relay, wherein, the relay includes driving coil and load Switch, the relay are used to cut off or connect the access of leakage current.

Preferably, the leakage current simulator further includes DC power supply, the 5th resistance, the 6th resistance, second controllably opens It closes, wherein：

The DC power supply is connect with the first end of the driving coil, and two ends of the driving coil and described second can The first end connection of control switch, the second of second controllable switch terminates electrically, the control terminal of second controllable switch It is connect with the first end of the 6th resistance, the input of the second end of the 6th resistance as the leakage current simulator End, the first end of the load switch are connect with the first end of the 5th resistance, and the second end of the load switch is as institute State the second output terminal of leakage current simulator, the second end of the 5th resistance as the leakage current simulator first Output terminal.

In order to solve the above technical problems, the utility model additionally provides a kind of conduction charging system, the conduction charging system For connecting supply network and electric vehicle, which includes the detection dress of PE lines in any of the above-described kind of supply network It puts.

Preferably, which further includes the confession plug being connect with the supply network.

Preferably, which further includes the vehicle plug being connect with the electric vehicle or vehicle socket.

Further, which further includes the confession plug being connect with the supply network.

Preferably, which further includes fault cues device, when PE lines are invalid in the supply network, institute State the invalid state of fault cues device prompting customer power supply network PE line.

Preferably, the fault cues device is specially visual cues device.

Further, the visual cues device is specially light emitting diode or display screen.

Preferably, the fault cues device is specially sound prompt device.

Further, which further includes operating switch, for receiving the work order of user, in order to institute It states conduction charging system and the electric vehicle and the supply network is connected according to the work order.

In order to solve the above technical problems, the utility model additionally provides a kind of electric vehicle, which includes any of the above-described Kind conduction charging system.

The utility model provides the detection device of PE lines in a kind of supply network, conduction charging system and electric vehicle, packet Include firewire, zero curve and the PE lines in detection device, controller, leakage current simulator and leak current detection device.Leakage current mould The input terminal for intending device is connect with controller, and the first output terminal of leakage current simulator is connect with firewire or zero curve, leakage current The second output terminal of simulator is connect with PE lines, and firewire is connected with zero curve or examined across leak current detection device or leakage current It surveys device to be connected in the circuit of leakage current simulator, the output terminal of leak current detection device is connect with controller.The application Leakage current simulator is controlled to generate leakage current by controller, leak current detection device generates letter when detecting leakage current Number, when the signal value of generation is in the range of controller preset signals value, determine that PE lines are effective, otherwise, it determines PE lines are invalid.It can See, whether the application can detect PE lines automatic continuously effective, to ensure that user is using electrical equipment, conduction charging system And personal safety during electric vehicle charging.

Description of the drawings

It, below will be to the prior art and embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model Some embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to this A little attached drawings obtain other attached drawings.

Fig. 1 (a) is the structure diagram of the detection device of PE lines in a kind of supply network provided by the utility model；

Fig. 1 (b) is the structure diagram of the detection device of PE lines in another supply network provided by the utility model；

Fig. 2 is the connection side that leak current detection device shown in a kind of application drawing 1 (a) or Fig. 1 (b) uses leakage current sensor Formula；

Fig. 3 is the connection that leak current detection device shown in another application drawing 1 (a) or Fig. 1 (b) uses leakage current sensor Mode；

Fig. 4 is the structure diagram of leakage current simulator shown in the first application drawing 1 (a) or Fig. 1 (b)；

Fig. 5 is the structure diagram of leakage current simulator shown in second of application drawing 1 (a) or Fig. 1 (b)；

Fig. 6 is the structure diagram of leakage current simulator shown in the third application drawing 1 (a) or Fig. 1 (b)；

Fig. 7 is the structure diagram of the first electric vehicle provided by the utility model charging；

Fig. 8 is the structure diagram of second of electric vehicle provided by the utility model charging；

Fig. 9 is the structure diagram of the third electric vehicle provided by the utility model charging.

Specific embodiment

With the development of power supply technique, electrical equipment is popularized, and the safety of electricity consumption becomes asking for user's common concern Topic.When the electrical equipment that user is commonly used surprisingly is charged, electrical equipment would generally be by connecing the ground wire in supply network, i.e., PE (protective conductor protect conductor) line, so as to form short circuit current, is discharged over the ground using electric equipment, human body Danger Electric shock risk occurs for the electrical equipment that just will not contact electrification.As it can be seen that the PE lines in supply network are to protection user power utilization safety It is most important.

However, due to different regions, the power supply mode of the supply network of different geographical is different, and there are no known to any one Mode, can use a kind of detection device be suitable for different power supply modes supply network PE lines detect, to ensure user Electrical Safety.Simultaneously as electricity consumption is duration, it can automatically continuously detect the effective of PE lines and become to protect user The emphasis of Electrical Safety.However, there are no mode known to any one, reliably automatic continuous property detection power supply can be reached Whether network PE line effectively requires.Therefore, how the technology that a kind of scheme for solving above-mentioned technical problem is this field is provided Personnel need urgent problem to be solved at present.

With popularizing for electric vehicle, the Electrical Safety problem for conducting charging system and electric vehicle user is more and more prominent. Charging safety accident caused by conduction charging system and electric vehicle charge happens occasionally.So far, there are no one kind Whether the conduction charging system and electric vehicle known, the supply network end PE lines that power supply mode not of the same race can be effectively detected have Effect, to ensure that user's is safe to use.Simultaneously as charging is duration, whether effective PE lines can be automatically continuously detected Become the emphasis in order to protect user power utilization safety.However, any one is known not yet conducts charging system and electric vehicle, It can reach whether automatic reliably duration detection supply network PE lines effectively require.Therefore, how a kind of solution is provided The conduction charging system and electric vehicle of above-mentioned technical problem are that those skilled in the art urgently needs to solve at present.This practicality Novel core is to provide the detection device of PE lines in a kind of supply network, conduction charging system and electric vehicle, can detect Whether PE lines are effective in supply network.It also, can be in the embodiment of a kind of preferred conduction charging system and electric vehicle Cut off the connection of electric vehicle and supply network.

Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model Example, all other embodiment that those of ordinary skill in the art are obtained without making creative work belong to The range of the utility model protection.

The utility model provides a kind of detection device of PE lines in supply network, which is included in detection device Firewire, zero curve and PE lines, controller, leakage current simulator and leak current detection device；

Firewire, zero curve, PE lines are used to connect with supply network and electrical equipment.

Specifically, the detection device that the application provides includes controller, leakage current simulator and leak current detection device, Firewire, zero curve and the PE lines in detection device are further included, supply network is connected by above-mentioned firewire, zero curve and PE lines and electrical equipment It connects.

In addition, the different regions of different even same countries of country, due to electricity consumption occasion and economic development etc. Difference, the earthing mode of electric power system simultaneously differs.The power supply mode of current electric power system includes IT, TT, TN-C, TN-S And five types of TN-C-S.The power supply mode of supply network in the application can be single-phase in any type of electric power system Power supply mode or multiphase power supply mode, AC power is provided for electrical equipment.Therefore, PE in the supply network that the application provides The detection device of line can be adapted for any area and any country, the scope of application are extremely wide.

Fig. 1 (a) or Fig. 1 (b) is please referred to, Fig. 1 (a) is the detection of PE lines in a kind of supply network provided by the utility model The structure diagram of device, Fig. 1 (b) are the structure of the detection device of PE lines in another supply network provided by the utility model Schematic diagram.

As a kind of preferred embodiment, the input terminal of leakage current simulator 2 is connect with controller 1, and leak electricity flow field simulation First output terminal of device 2 is connect with firewire or zero curve, and the second output terminal of leakage current simulator 2 is connect with PE lines；

Firewire connects leak current detection device 3 or firewire with zero curve and zero curve passes through leak current detection device 3, electric leakage The output terminal of flow detection device 3 is connect with controller 1；Controller 1 is used for the electric leakage that leakage current simulator 2 is controlled to generate simulation Stream, leak current detection device 3 in the leakage current for detecting simulation for generating signal, when the signal value of generation is in controller 1 When in the range of preset signal value, determine that PE lines are effective, when the signal value of generation is not in the model of 1 preset signal value of controller When enclosing interior, determine that PE lines are invalid.

It should be noted that default in the application sets, it is only necessary to which setting is primary, unless according to actual conditions It needs to change, does not otherwise need to reset.

Specifically, the operation principle of the detection device is：Controller 1 controls leakage current simulator 2 to work, and makes leakage current Simulator 2 generates leakage current.Leakage current simulator 2 can be more excellent by setting the electric current for generating but being not limited only to 0-1A Selection be to generate the electric current of 0-50mA, preferred selection is 0-30mA.It is set as the specific electric current of leakage current simulator 2 It puts, the application is not particularly limited herein.

When leakage current simulator 2 produces the leakage current of simulation, leak current detection device 3 detects the electric leakage of generation During stream, have signal and export to controller 1.When in the range of the signal value that the signal value of generation is set in controller 1, really Determine that PE lines are effective, when in the range of the signal value that the signal value of generation is not set in controller 1, determine that PE lines are invalid.

Here controller 1 can be but be not limited only to the MCU being made of a piece of or several integrating devices (Microcontroller Unit, micro-control unit), integrating device is used to implement control function.MCU can select 4 micro- places Device or 8-bit microprocessor or the microprocessor of 16 bit or 32-bit microprocessor or the microprocessors such as 64 are managed, according to its application field, Reasonable selection microprocessor.As for the specific choice of MCU, the application is not particularly limited herein, depending on actual conditions. Program in MCU is stored in FLASH either EERPOM or FROM, ensures MCU in the case of power down, control logic is still protected It deposits.Certainly, the application can also be using other kinds of controller as the controller 1 in the application, and the application is not done herein It is special to limit, depending on actual conditions.

As a kind of preferred embodiment, the input terminal of leakage current simulator 2 is connect with controller 1, and leak electricity flow field simulation First output terminal of device 2 is connect with firewire or zero curve, and the second output terminal of leakage current simulator 2 is connect with PE lines；

Leak current detection device 3 is connected in the circuit of leakage current simulator 2, the output letter of leak current detection device 3 Number feed back to controller 1；Controller 1 is used for the leakage current that leakage current simulator 2 is controlled to generate simulation, leak current detection device 3 in the leakage current for detecting simulation for generating signal, when generation signal value 1 preset signal value of controller range When interior, determine that PE lines are effective, when the signal value of generation is not when in the range of 1 preset signal value of controller, determine PE lines without Effect.

Specifically, the leak current detection device 3 in the application can be connected in the circuit of leakage current simulator 2, than Such as, leak current detection device 3 uses resistance, the leakage current of generation is made to flow through the resistance, controller 1 can adopt the resistance both ends Sample obtains the output signal of voltage value, i.e. leak current detection device 3, so as to calculate the current value for flowing through the resistance, realizes inspection It leaks hunting the purpose of electric current.

As a kind of preferred embodiment, which further includes firewire controllable switch driving circuit and firewire is controllably opened It closes, wherein：

Controller 1 is connect with firewire controllable switch driving circuit, the driving end of firewire controllable switch driving circuit and firewire The input terminal of the control terminal connection of controllable switch, the first end of firewire controllable switch and firewire connects, and the of firewire controllable switch The output terminal of two ends and firewire connects；Controller 1 is used to control firewire controllable switch by firewire controllable switch driving circuit It disconnects or is connected, in order to be correspondingly turned off or connect firewire.

Specifically, the detection device that the application provides further includes firewire controllable switch driving circuit and firewire controllable switch. Controller 1 can control the firewire controllable switch being connect with firewire to connect by firewire controllable switch driving circuit, make supply network Connect electrical equipment.In view of the personal safety of user, when PE lines are invalid, controller 1 can be driven by firewire controllable switch Dynamic circuit control firewire controllable switch disconnects, and so as to cut off firewire, protects the personal safety of user.

As a kind of preferred embodiment, firewire controllable switch is bidirectional triode thyristor, the control pole conduct of bidirectional triode thyristor The control terminal of firewire controllable switch, the first end of the first main electrode of bidirectional triode thyristor as firewire controllable switch are two-way controllable Second end of second main electrode of silicon as firewire controllable switch；Or firewire controllable switch is relay, relay coil is made For the control terminal of firewire controllable switch, the first end of the first ends of relay switch contacts as firewire controllable switch, relay Second end of the second end of switch contact as firewire controllable switch.

Specifically, the firewire controllable switch in the application may be used but be not limited only to bidirectional triode thyristor, bidirectional triode thyristor It is a kind of silicon controlling rectifier device, can realizes the system without deaerator of alternating current in circuit, with Small current control high current, Have many advantages, such as that no-spark, action are fast, long lifespan, reliability are high and simplify circuit structure.

In addition, the firewire controllable switch in the application can also use relay, controller 1 is by driving relay coil Closed communicating.Certainly, the application can also use other switches to be used as firewire controllable switch, and the application does not do special limit herein It is fixed.

As a kind of preferred embodiment, which further includes zero curve controllable switch driving circuit and zero curve is controllably opened It closes, wherein：

Controller 1 is connect with zero curve controllable switch driving circuit, the driving end of zero curve controllable switch driving circuit and zero curve The input terminal of the control terminal connection of controllable switch, the first end of zero curve controllable switch and zero curve connects, and the of zero curve controllable switch The output terminal of two ends and zero curve connects；Controller 1 by zero curve controllable switch driving circuit control zero curve controllable switch disconnect or Conducting, in order to be correspondingly turned off or connect zero curve.

Specifically, in order to further improve the safety of electrical equipment, the detection device that the application provides further includes zero curve Controllable switch driving circuit and zero curve controllable switch.Similarly, controller 1 can be controlled and zero by zero curve controllable switch driving circuit The zero curve controllable switch connection of line connection；When PE lines are invalid, controller 1 can be controlled by zero curve controllable switch driving circuit Zero curve controllable switch disconnects, so as to cut off zero curve.

As a kind of preferred embodiment, zero curve controllable switch is bidirectional triode thyristor, the control pole conduct of bidirectional triode thyristor The control terminal of zero curve controllable switch, the first end of the first main electrode of bidirectional triode thyristor as zero curve controllable switch are two-way controllable Second end of second main electrode of silicon as zero curve controllable switch；Or zero curve controllable switch is relay, relay coil is made For the control terminal of zero curve controllable switch, the first end of the first ends of relay switch contacts as zero curve controllable switch, relay Second end of the second end of switch contact as zero curve controllable switch.

Similarly, the zero curve controllable switch in the application may be used but be not limited only to bidirectional triode thyristor or relay. Certainly, the application can also use other switches to be used as zero curve controllable switch, and the application is not particularly limited herein.

As a kind of preferred embodiment, which further includes PE line controllable switch driving circuits and PE lines are controllably opened It closes, wherein：

Controller 1 is connect with PE line controllable switch driving circuits, driving end and the PE lines of PE line controllable switch driving circuits The control terminal connection of controllable switch, the first end of PE line controllable switches connect with the input terminal of PE lines, and the of PE line controllable switches Two ends are connect with the output terminal of PE lines；Controller 1 by PE line controllable switches driving circuit control PE lines controllable switches disconnect or Conducting, in order to be correspondingly turned off or connect PE lines.

Similarly, in order to further improve the safety of electrical equipment, the detection device that the application provides further includes PE lines Controllable switch driving circuit and PE line controllable switches.Similarly, controller 1 can pass through the control of PE line controllable switches driving circuit and PE The PE lines controllable switch connection of line connection；When PE lines are invalid, controller 1 can be controlled by PE line controllable switches driving circuit PE lines controllable switch disconnects, so as to cut off PE lines.

As a kind of preferred embodiment, PE lines controllable switch is bidirectional triode thyristor, the control pole conduct of bidirectional triode thyristor The control terminal of PE line controllable switches, the first end of the first main electrode of bidirectional triode thyristor as PE line controllable switches are two-way controllable Second end of second main electrode of silicon as PE line controllable switches；Or PE lines controllable switch is relay, relay coil is made For the control terminal of PE line controllable switches, the first end of the first ends of relay switch contacts as PE line controllable switches, relay Second end of the second end of switch contact as PE line controllable switches.

Similarly, the PE line controllable switches in the application may be used but be not limited only to bidirectional triode thyristor or relay. Certainly, the application can also use other switches to be used as PE line controllable switches, and the application is not particularly limited herein.

In addition, can to include firewire controllable switch, zero curve controllable switch and PE lines simultaneously controllable for the detection device of the application Arbitrary two kinds of combinations and driving circuit in switch, at this point, the controllable switch of this arbitrary two kinds of combination can share a driving Circuit；Can also two controllable switches respectively with respective driving circuit, the application is not particularly limited herein.

In addition, can to include firewire controllable switch, zero curve controllable switch and PE lines simultaneously controllable for the detection device of the application Switch and driving circuit, at this point, these three controllable switches can share a driving circuit；It can also any two controllable switch A driving circuit is shared, remaining controllable switch is individually with a driving circuit；Can also three controllable switches it is independent With a driving circuit, the application is not particularly limited herein.

As a kind of preferred embodiment, leak current detection device 3 includes the electric current connected respectively on firewire and zero curve and passes Sensor.

Specifically, current sensor detection leakage current may be used in the application.It respectively connects on firewire and zero curve an electric current Sensor, when leakage current simulator 2 generates leakage current, on the measurement current value and zero curve of the current sensor on firewire The measurement current value of current sensor is unequal.Controller 1 judges whether the electric current value difference between above-mentioned firewire and zero curve is setting In the range of the signal value put, correspondingly to determine whether PE lines are effective.

As a kind of preferred embodiment, leak current detection device 3 is leakage current sensor, and zero curve and firewire both pass through leakage Current sensor.

Specifically, leakage current sensor detection leakage current may be used in the application, and firewire and zero curve are sensed across leakage current Device when leakage current simulator 2 generates leakage current, flows through the current phasor of leakage current sensor and is not zero, electric leakage is spread Sensor outputs signal to controller 1, so as to fulfill the detection of leakage current.As for the concrete mode of detection leakage current, the application exists This is not particularly limited.

Fig. 2 is please referred to, Fig. 2 is sensed for leak current detection device shown in a kind of application drawing 1 (a) or Fig. 1 (b) using leakage current The connection mode of device.

As a kind of preferred embodiment, PE lines are not passed through leakage current sensor S.

Specifically, in Fig. 2, across leakage current sensor S, PE lines are not passed through leakage current for zero curve and firewire positive (direct) Sensor S.

Fig. 3 is please referred to, Fig. 3 is that leak current detection device shown in another application drawing 1 (a) or Fig. 1 (b) is spread using electric leakage The connection mode of sensor.

As a kind of preferred embodiment, PE lines pass through leakage current sensor S, and PE lines are across leakage current sensor S's Direction is opposite with the direction of firewire and zero curve across leakage current sensor S.

Specifically, in Fig. 3, zero curve and firewire forward direction pass back through leakage current sensing across leakage current sensor S, PE line Device S improves the accuracy and reliability of detection.

As a kind of preferred embodiment, which further includes leak current detection device self-checking circuit, leakage current inspection Survey self-check of device circuit first end connect with the self-test end of controller 1, the second end of leak current detection device self-checking circuit and The self-checking function end connection of leak current detection device 3, controller 1 are used to send self-test by leak current detection device self-checking circuit Signal is to leak current detection device 3, when the signal that the leak current detection device 3 that controller 1 receives is fed back is in preset feedback When in range of signal, leak current detection device 3 is normal, otherwise, 3 failure of leak current detection device.

Specifically, it is contemplated that leak current detection device 3 is it is possible that failure, the application further include leak current detection device Self-checking circuit.Controller 1 sends self-test signal to leak current detection device 3 by leak current detection device self-checking circuit, works as control When the signal that the leak current detection device 3 that device 1 processed receives is fed back is in the range of the feedback signal set, illustrate that leakage current is examined Device 3 is surveyed normally, when the signal that the leak current detection device 3 that controller 1 receives is fed back is not in the feedback signal model set When enclosing interior, illustrate 3 failure of leak current detection device.

As a kind of preferred embodiment, leak current detection device self-checking circuit includes resistance and self-test coil, resistance First end of the first end as leak current detection device self-checking circuit, the second end of resistance are connect with the first end of self-test coil, Second end of the second end of self-test coil as leak current detection device self-checking circuit.

Specifically, the components such as resistance and self-test coil composition leak current detection device self-test electricity may be used in the application Road, controller 1 send a signal to the self-test coil of leak current detection device self-checking circuit by resistance.More preferably, letter here Number be square wave.Certainly, the application can also use the combination of other components or component as leak current detection device oneself Circuit is examined, the application is not particularly limited herein.

As a kind of preferred embodiment, which further includes operational amplification circuit, wherein：

The input terminal of operational amplification circuit is connect with the output terminal of leak current detection device 3, the output of operational amplification circuit End is connect with controller 1, and operational amplification circuit is used to carry out ratio enlargement to the signal that leak current detection device 3 generates.

Specifically, in order to which the signal for generating leak current detection device 3 facilitates detection, which further includes operation and puts Big circuit.The signal that operational amplification circuit can generate leak current detection device 3 is amplified, and amplifies weaker detection signal To certain value, the application can set the ratio of amplification according to actual conditions, improve signal effect.

As a kind of preferred embodiment, which further includes filter circuit, wherein：

The input terminal of filter circuit is connect with the output terminal of leak current detection device 3, the output terminal of filter circuit and control Device 1 connects, and the signal that filter circuit is used to generate leak current detection device 3 is filtered.

Specifically, in order to improve the signal effect of the generation of leak current detection device 3, which further includes filtered electrical Road, the signal that filter circuit can generate leak current detection device 3 are filtered, filtering interference signals, so as to obtain more Add accurate signal, prevent error detection.

As a kind of preferred embodiment, which further includes operational amplification circuit and filter circuit, wherein：

The input terminal of operational amplification circuit is connect with the output terminal of leak current detection device 3, the output of operational amplification circuit End is connect with the input terminal of filter circuit, and the output terminal of filter circuit is connect with controller 1, and operational amplification circuit is used for electric leakage The signal that flow detection device 3 generates carries out ratio enlargement, and filter circuit is used to carry out the signal that leak current detection device 3 generates Filtering process.

Specifically, in order to which the signal for generating leak current detection device 3 is more stablized, which can also wrap simultaneously Operational amplification circuit and filter circuit are included, operational amplification circuit can carry out equal proportion to the signal that leak current detection device 3 generates Amplification, makes weaker detection signal be amplified to certain value；Filter circuit can be filtered the signal of amplification, filter out interference Signal.

As a kind of preferred embodiment, leakage current simulator 2 includes photoelectrical coupler, wherein, photoelectrical coupler packet Light emitting diode and phototriode are included, photoelectrical coupler is used to cut off or connect the access of leakage current.

Specifically, the process of the generation of leakage current simulator 2 leakage current includes：Controller 1 is by controlling photoelectrical coupler In LEDs ON, generate optical signal, i.e. photoelectrical coupler is in running order, photosensitive three pole in photoelectrical coupler Optical signal is converted to electric signal by pipe, generates leakage current.

Fig. 4 is please referred to, Fig. 4 is the structural representation of leakage current simulator shown in the first application drawing 1 (a) or Fig. 1 (b) Figure.

As a kind of preferred embodiment, leakage current simulator 2 further includes DC power supply, first resistor R1, the second electricity R2, the first controllable switch Q1 are hindered, wherein：

The first end of first resistor R1 is connect with DC power output end, the second end and light emitting diode of first resistor R1 Anode connection, the cathode of light emitting diode connect with the first end of the first controllable switch Q1, the second of the first controllable switch Q1 Termination electrically, the input terminal of the control terminal of the first controllable switch Q1 as leakage current simulator 2, the current collection of phototriode Pole is connect with the first end of second resistance R2, the second output terminal of the emitter of phototriode as leakage current simulator 2, First output terminal of the second end of second resistance R2 as leakage current simulator 2.

Specifically, the first end of first resistor R1 is connect with DC power output end, the second end and light of first resistor R1 The first end of the anode connection of light emitting diode in electric coupler U1, the cathode of light emitting diode and the first controllable switch Q1 connect It connects, electrically, the control terminal of the first controllable switch Q1 is as leakage current simulator 2 for the second termination of the first controllable switch Q1 Input terminal, the collector of the phototriode in photoelectrical coupler U1 are connect with the first end of second resistance R2, phototriode Second output terminal of the emitter as leakage current simulator 2, the second end of second resistance R2 is as leakage current simulator 2 The first output terminal.First resistor R1 can be in series or in parallel by a high-power resistance or several low power resistance Instead of.Second resistance R2 can be by a high-power resistance or several low power resistance replacements in series or in parallel.

It should be noted that first resistor R1 and second resistance R2 is not restricted to the described position of this structure diagram It puts, any one can generate the position of the resistance of identical function in the described range of this embodiment.Such as：First electricity It hinders the first end of R1 and the cathode of light emitting diode connects, the second end of first resistor R1 and the first end of the first controllable switch Q1 Connection, the second end of the first controllable switch Q1 electrically connect, and the control terminal of the first controllable switch Q1 is as electric leakage flow field simulation dress 2 input terminal is put, the anode of light emitting diode and the output terminal of DC power supply connect, the first end of second resistance R2 and photosensitive three The emitter connection of pole pipe, the second output terminal of the second end of second resistance R2 as leakage current simulator 2, phototriode First output terminal of the collector as leakage current simulator 2.

As a kind of preferred embodiment, leakage current simulator 2 includes magnetic coupler, wherein, magnetic coupler is used to cut Disconnected or connection leakage current access.

Fig. 5 is please referred to, Fig. 5 is the structural representation of leakage current simulator shown in second of application drawing 1 (a) or Fig. 1 (b) Figure.

As a kind of preferred embodiment, leakage current simulator 2 further includes 3rd resistor R3, the 4th resistance R4, three poles Pipe Q2, wherein：

Input terminal of the input terminal of magnetic coupler U2 as leakage current simulator 2, the output terminal of magnetic coupler U2 and The first end connection of four resistance R4, the second end of the 4th resistance R4 are connect with the base stage of triode Q2, the collector of triode Q2 It is connect with 3rd resistor R3 first ends, the second output terminal of the emitter of triode Q2 as leakage current simulator 2, third electricity Hinder first output terminal of the second end of R3 as leakage current simulator 2.

Specifically, input terminal of the input terminal of magnetic coupler U2 as leakage current simulator 2, the output of magnetic coupler U2 The first end of the 4th resistance R4 of end connection, the base stage of the second end connecting triode Q2 of the 4th resistance R4, the current collection of triode Q2 Pole connects 3rd resistor R3 first ends, the second output terminal of the emitter of triode Q2 as leakage current simulator 2, and third is electric Hinder first output terminal of the second end of R3 as leakage current simulator 2.3rd resistor R3 can by a high-power resistance or Several low power resistance replacements in series or in parallel of person.4th resistance R4 can by a high-power resistance or several Low power resistance replacement in series or in parallel.

The process that leakage current simulator 2 generates leakage current includes：Controller 1 provides a drive signal to magnetic coupler U2, magnetic coupler U2 export a signal driving triode Q2 conducting by inner couplings isolation, generate leakage current.

It should be noted that 3rd resistor R3 is not restricted to the described position of this structure diagram, any one can To generate the position of the resistance of identical function in the described range of this embodiment.Such as：The first end of 3rd resistor R3 It is connect with the emitter of triode Q2, the second output terminal of the second end of 3rd resistor R3 as leakage current simulator 2, three poles First output terminal of the collector of pipe Q2 as leakage current simulator 2.

As a kind of preferred embodiment, leakage current simulator 2 includes relay, wherein, relay includes driving line Circle and load switch, relay are used to cut off or connect the access of leakage current.

Specifically, the process of the generation of leakage current simulator 2 leakage current includes：Controller 1 controls driving coil to be powered, and bears Load switch is closed, and generates leakage current.

Fig. 6 is please referred to, Fig. 6 is the structural representation of leakage current simulator shown in the third application drawing 1 (a) or Fig. 1 (b) Figure.

As a kind of preferred embodiment, leakage current simulator 2 further includes DC power supply, the 5th resistance R5, the 6th electricity R6, the second controllable switch Q3 are hindered, wherein：

The first end of DC power supply and driving coil connects, the second end of driving coil and the first of the second controllable switch Q3 End connection, the second termination of the second controllable switch Q3 electrically, the of the control terminal of the second controllable switch Q3 and the 6th resistance R6 One end connects, the input terminal of the second end of the 6th resistance R6 as leakage current simulator 2, the first end of load switch and the 5th The first end connection of resistance R5, the second output terminal of the second end of load switch as leakage current simulator 2, the 5th resistance R5 First output terminal of the second end as leakage current simulator 2.

Specifically, DC power supply is connect with the first end of the driving coil in relay U3, the second end of driving coil with The first end connection of second controllable switch Q3, the second of the second controllable switch Q3 terminates electrically, the control of the second controllable switch Q3 End processed is connect with the first end of the 6th resistance R6, the input terminal of the second end of the 6th resistance R6 as leakage current simulator 2, after The first end of load switch in electric appliance U3 is connect with the first end of the 5th resistance R5, and the second end of load switch is as leakage current The second output terminal of simulator 2, the first output terminal of the second end of the 5th resistance R5 as leakage current simulator 2.5th Resistance R5 can be by a high-power resistance or several low power resistance replacements in series or in parallel.6th resistance R6 can With by a high-power resistance or several low power resistance replacements in series or in parallel.

It should be noted that the 5th resistance R5 is not restricted to the described position of this structure diagram, any one can To generate the position of the resistance of identical function in the described range of this embodiment.Such as：The first end of 5th resistance R5 It is connect with the second end of load switch, the second output terminal of the second end of the 5th resistance R5 as leakage current simulator 2, load First output terminal of the first end of switch as leakage current simulator 2.

The utility model additionally provides a kind of conduction charging system, which is used to connect supply network and electricity Motor-car, the conduction charging system include the detection device of PE lines in any of the above-described kind of supply network.

Specifically, conduction charging system connection supply network and electric vehicle are (i.e. completely or partially using electrical energy drive Motor vehicles), realize that supply network charges for electric vehicle.

The introduction of the detection device of PE lines that the conduction charging system that the application provides includes please refers to the inspection of above-mentioned PE lines Device embodiment is surveyed, details are not described herein by the application.

Fig. 7 is please referred to, Fig. 7 is the structure diagram of the first electric vehicle provided by the utility model charging.

As a kind of preferred embodiment, which further includes the confession plug 11 being connect with supply network.

Specifically, the application can be by the connection for the realization electric vehicle of plug 11 and supply network, so as to make power supply Network charges for electric vehicle.

Fig. 8 is please referred to, Fig. 8 is the structure diagram of second of electric vehicle provided by the utility model charging.

As a kind of preferred embodiment, which further includes the vehicle plug 12 or vehicle being connect with electric vehicle Socket 12.

Specifically, which can be integrated on power supply unit, the application can by vehicle plug 12 or Vehicle socket 12 realizes the connection of conduction charging system and electric vehicle, and then realizes that supply network charges for electric vehicle.Work as conduction When charging system side is vehicle plug 12, electric vehicle side is socket；When it is vehicle socket 12 to conduct charging system side, Electric vehicle side is plug.

Fig. 9 is please referred to, Fig. 9 is the structure diagram of the third electric vehicle provided by the utility model charging.

As a kind of preferred embodiment, which further includes the confession plug 11 being connect with supply network.

Specifically, the basis for the vehicle plug 12 or vehicle socket 12 being connect with electric vehicle is included in conduction charging system On, which further includes the confession plug 11 being connect with supply network.

As a kind of preferred embodiment, which further includes fault cues device, as PE in supply network When line is invalid, the invalid state of fault cues device prompting customer power supply network PE line.

Specifically, which further includes fault cues device, and when PE lines are invalid in supply network, failure carries The invalid state of showing device prompting supply network PE lines, in order to remind PE lines in customer power supply network invalid, thus improves Conduct the safety of charging system.

As a kind of preferred embodiment, fault cues device is specially visual cues device.

Specifically, visual cues device may be used in the fault cues device in the application, and user is allowed to be intuitive to see very much The state of supply network PE lines.

As a kind of preferred embodiment, visual cues device is specially light emitting diode or display screen.

Specifically, light emitting diode may be used in visual cues device here, and customer power supply network is reminded by shining The state of middle PE lines；Display screen can also be used, passes through the state of PE lines in screen display prompts customer power supply network.

As a kind of preferred embodiment, fault cues module is specially sound prompt device.

Specifically, sound prompt device may be used in the fault cues device in the application, and user is allowed directly to hear power supply The state of network PE line.As for the specific choice of fault cues device, the application is not particularly limited herein.

Here sound prompt device can by but be not limited only to buzz or drop drop caution sound or voice prompt user The state of PE lines in supply network, the application are not particularly limited herein.

In addition, it is contemplated that personal safety, when PE lines are invalid in supply network, conduction charging system can cut off electric vehicle with The connection of supply network, so as to which electric vehicle be made to stop charging.

As a kind of preferred embodiment, which further includes operating switch, for receiving the work of user Instruction connects the connection of electric vehicle and supply network in order to conduct charging system according to work order.

Specifically, the conduction charging system in the application further includes operating switch, and user can also select Operating In Persistent Current Mode to open It closes, makes conduction charging system connection electric vehicle and supply network, so as to which electric vehicle be made to continue to charge.

The utility model additionally provides a kind of electric vehicle, which includes any of the above-described kind of conduction charging system.

The introduction of the conduction charging system contained by electric vehicle that the application provides please refers to the reality of above-mentioned conduction charging system Example is applied, details are not described herein by the application.

It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation Between there are any actual relationship or orders.Moreover, term " comprising ", "comprising" or its any other variant meaning Covering non-exclusive inclusion, so that process, method, article or equipment including a series of elements not only include that A little elements, but also including other elements that are not explicitly listed or further include for this process, method, article or The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged Except also there are other identical elements in the process, method, article or apparatus that includes the element.

" leakage current " represents the electric current for causing to flow through in firewire and flows through the vector sum of neutral line current not in the present specification For 0 electric current.

The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The most wide range consistent with features of novelty.

Claims (34)

1. the detection device of PE lines in a kind of supply network, which is characterized in that the detection device is included in the detection device Firewire, zero curve and PE lines, controller, leakage current simulator and leak current detection device；

The firewire, the zero curve, the PE lines are used to connect with supply network and electrical equipment.

2. detection device as described in claim 1, which is characterized in that the input terminal of the leakage current simulator and the control Device connection processed, the first output terminal of the leakage current simulator are connect with the firewire or zero curve, the electric leakage flow field simulation dress The second output terminal put is connect with the PE lines；

The firewire connects the leak current detection device or the firewire with the zero curve and the zero curve passes through the leakage Current sensing means, the output terminal of the leak current detection device are connect with the controller；The controller is used to control institute The leakage current that leakage current simulator generates simulation is stated, the leak current detection device is used in the electric leakage for detecting simulation Signal is generated during stream, when the signal value of generation is when in the range of the preset signal value of the controller, determines that the PE lines have Effect when the signal value of generation is not when in the range of the preset signal value of the controller, determines that the PE lines are invalid.

3. detection device as described in claim 1, which is characterized in that the input terminal of the leakage current simulator and the control Device connection processed, the first output terminal of the leakage current simulator are connect with the firewire or zero curve, the electric leakage flow field simulation dress The second output terminal put is connect with the PE lines；

The leak current detection device is connected in the circuit of the leakage current simulator, the leak current detection device it is defeated Go out signal and feed back to the controller；The controller is used for the leakage current that the leakage current simulator is controlled to generate simulation, The leak current detection device in the leakage current for detecting simulation for generating signal, when the signal value of generation is described When in the range of the preset signal value of controller, determine that the PE lines are effective, when the signal value of generation is pre- not in the controller If signal value in the range of when, determine that the PE lines are invalid.

4. detection device as described in claim 1, which is characterized in that the detection device further includes firewire controllable switch driving electricity Road and firewire controllable switch, wherein：

The controller is connect with the firewire controllable switch driving circuit, the driving end of the firewire controllable switch driving circuit It is connect with the control terminal of the firewire controllable switch, the first end of the firewire controllable switch connects with the input terminal of the firewire It connects, the second end of the firewire controllable switch is connect with the output terminal of the firewire；The controller is used for through the firewire Controllable switch driving circuit controls the disconnection or conducting of the firewire controllable switch, in order to be correspondingly turned off or connect the fire Line.

5. detection device as claimed in claim 4, which is characterized in that the firewire controllable switch is bidirectional triode thyristor, described Control terminal of the control pole of bidirectional triode thyristor as the firewire controllable switch, the first main electrode conduct of the bidirectional triode thyristor The first end of the firewire controllable switch, the second main electrode of the bidirectional triode thyristor as the firewire controllable switch second End；Or the firewire controllable switch be relay, control terminal of the relay coil as the firewire controllable switch, institute State first end of the first end of relay switch contacts as the firewire controllable switch, the second of the relay switch contacts Hold the second end as the firewire controllable switch.

6. detection device as described in claim 1, which is characterized in that the detection device further includes zero curve controllable switch driving electricity Road and zero curve controllable switch, wherein：

The controller is connect with the zero curve controllable switch driving circuit, the driving end of the zero curve controllable switch driving circuit It is connect with the control terminal of the zero curve controllable switch, the first end of the zero curve controllable switch connects with the input terminal of the zero curve It connects, the second end of the zero curve controllable switch is connect with the output terminal of the zero curve；The controller is controllable by the zero curve Switch driving circuit controls the zero curve controllable switch to disconnect or be connected, in order to be correspondingly turned off or connect the zero curve.

7. detection device as claimed in claim 6, which is characterized in that the zero curve controllable switch is bidirectional triode thyristor, described Control terminal of the control pole of bidirectional triode thyristor as the zero curve controllable switch, the first main electrode conduct of the bidirectional triode thyristor The first end of the zero curve controllable switch, the second main electrode of the bidirectional triode thyristor as the zero curve controllable switch second End；Or the zero curve controllable switch be relay, control terminal of the relay coil as the zero curve controllable switch, institute State first end of the first end of relay switch contacts as the zero curve controllable switch, the second of the relay switch contacts Hold the second end as the zero curve controllable switch.

8. detection device as described in claim 1, which is characterized in that the detection device further includes PE lines controllable switch driving electricity Road and PE line controllable switches, wherein：

The controller is connect with the PE lines controllable switch driving circuit, the driving end of the PE lines controllable switch driving circuit It is connect with the control terminal of the PE lines controllable switch, the first end of the PE lines controllable switch and the input terminal of the PE lines connect It connects, the second end of the PE lines controllable switch is connect with the output terminal of the PE lines；The controller is controllable by the PE lines Switch driving circuit controls the PE lines controllable switch to disconnect or be connected, in order to be correspondingly turned off or connect the PE lines.

9. detection device as claimed in claim 8, which is characterized in that the PE lines controllable switch is bidirectional triode thyristor, described Control terminal of the control pole of bidirectional triode thyristor as the PE lines controllable switch, the first main electrode conduct of the bidirectional triode thyristor The first end of the PE lines controllable switch, the second main electrode of the bidirectional triode thyristor as the PE lines controllable switch second End；Or the PE lines controllable switch be relay, control terminal of the relay coil as the PE lines controllable switch, institute State first end of the first end of relay switch contacts as the PE lines controllable switch, the second of the relay switch contacts Hold the second end as the PE lines controllable switch.

10. such as claim 1-9 any one of them detection devices, which is characterized in that the leak current detection device includes institute State the current sensor connected respectively on firewire and the zero curve.

11. such as claim 1-9 any one of them detection devices, which is characterized in that the leak current detection device is electric leakage Flow sensor, the zero curve and the firewire both pass through the leakage current sensor.

12. detection device as claimed in claim 11, which is characterized in that the PE lines are not passed through the leakage current sensor.

13. detection device as claimed in claim 11, which is characterized in that the PE lines pass through the leakage current sensor, and The PE lines pass through the direction of the leakage current sensor to pass through the direction of the leakage current sensor with the firewire and zero curve On the contrary.

14. detection device as described in claim 1, which is characterized in that the detection device further includes leak current detection device certainly Circuit is examined, the first end of the leak current detection device self-checking circuit is connect with the self-test end of the controller, the leakage current The second end of detection device self-checking circuit is connect with the self-checking function end of the leak current detection device, and the controller is used to lead to It crosses the leak current detection device self-checking circuit and sends self-test signal to the leak current detection device, when the controller receives When the signal of leak current detection device feedback arrived is in the range of preset feedback signal, the leak current detection device is just Often, otherwise, the leak current detection device failure.

15. detection device as claimed in claim 14, which is characterized in that the leak current detection device self-checking circuit includes electricity Resistance and self-test coil, the first end of the first end of the resistance as the leak current detection device self-checking circuit, the resistance Second end connect with the first end of the self-test coil, the second end of the self-test coil is as the leak current detection device The second end of self-checking circuit.

16. detection device as described in claim 1, which is characterized in that the detection device further includes operational amplification circuit, In：

The input terminal of the operational amplification circuit is connect with the output terminal of the leak current detection device, the operational amplification circuit Output terminal connect with the controller, the operational amplification circuit be used for the signal that the leak current detection device generates into Row ratio enlargement.

17. detection device as described in claim 1, which is characterized in that the detection device further includes filter circuit, wherein：

The input terminal of the filter circuit is connect with the output terminal of the leak current detection device, the output terminal of the filter circuit It is connect with the controller, the signal that the filter circuit is used to generate the leak current detection device is filtered.

18. detection device as described in claim 1, which is characterized in that the detection device further includes operational amplification circuit and filter Wave circuit, wherein：

The input terminal of the operational amplification circuit is connect with the output terminal of the leak current detection device, the operational amplification circuit Output terminal connect with the input terminal of the filter circuit, the output terminal of the filter circuit is connect with the controller, described Operational amplification circuit is used for signal generate to the leak current detection device and carries out ratio enlargement, and the filter circuit is used for pair The signal of the leak current detection device generation is filtered.

19. detection device as described in claim 1, which is characterized in that the leakage current simulator includes photoelectrical coupler, Wherein, the photoelectrical coupler includes light emitting diode and phototriode, and the photoelectrical coupler is used to cutting off or connecting leakage The access of electric current.

20. detection device as claimed in claim 19, which is characterized in that the leakage current simulator further includes direct current Source, first resistor, second resistance, the first controllable switch, wherein：

The first end of the first resistor is connect with the DC power output end, the second end of the first resistor and the hair The anode connection of optical diode, the cathode of the light emitting diode connect with the first end of first controllable switch, and described the Electrically, the control terminal of first controllable switch is as the defeated of the leakage current simulator for second termination of one controllable switch Enter end, the collector of the phototriode is connect with the first end of the second resistance, the emitter of the phototriode As the second output terminal of the leakage current simulator, the second end of the second resistance is as the leakage current simulator The first output terminal.

21. detection device as described in claim 1, which is characterized in that the leakage current simulator includes magnetic coupler, institute Magnetic coupler is stated for cutting off or connecting the access of leakage current.

22. detection device as claimed in claim 21, which is characterized in that the leakage current simulator further include triode, 3rd resistor, the 4th resistance, wherein：

Input terminal of the input terminal of the magnetic coupler as the leakage current simulator, the output terminal of the magnetic coupler with The first end connection of 4th resistance, the second end of the 4th resistance are connect with the base stage of the triode, three pole The collector of pipe is connect with the 3rd resistor first end, and the emitter of the triode is as the leakage current simulator Second output terminal, the first output terminal of the second end of the 3rd resistor as the leakage current simulator.

23. detection device as described in claim 1, which is characterized in that the leakage current simulator includes relay, In, the relay includes driving coil and load switch, and the relay is used to cut off or connect the access of leakage current.

24. detection device as claimed in claim 23, which is characterized in that the leakage current simulator further includes direct current Source, the 5th resistance, the 6th resistance, the second controllable switch, wherein：

The DC power supply is connect with the first end of the driving coil, and the second end of the driving coil is controllable with described second Switch first end connection, second controllable switch second termination electrically, the control terminal of second controllable switch with The first end connection of 6th resistance, the input terminal of the second end of the 6th resistance as the leakage current simulator, The first end of the load switch is connect with the first end of the 5th resistance, and the second end of the load switch is as the leakage The second output terminal of current analog device, the second end of the 5th resistance are exported as the first of the leakage current simulator End.

25. a kind of conduction charging system, which is characterized in that the conduction charging system, should for connecting supply network and electric vehicle Charging system is conducted to include such as the detection device of PE lines in claim 1-24 any one of them supply networks.

26. conduction charging system as claimed in claim 25, which is characterized in that the conduction charging system further includes and the confession Electric network connection supplies plug.

27. conduction charging system as claimed in claim 25, which is characterized in that the conduction charging system further includes and the electricity The vehicle plug or vehicle socket of motor-car connection.

28. conduction charging system as claimed in claim 27, which is characterized in that the conduction charging system further includes and the confession Electric network connection supplies plug.

29. conduction charging system as claimed in claim 25, which is characterized in that the conduction charging system further includes fault cues Device, when PE lines are invalid in the supply network, the invalid shape of the fault cues device prompting customer power supply network PE line State.

30. conduction charging system as claimed in claim 29, which is characterized in that the fault cues device is specially that vision carries Showing device.

31. conduction charging system as claimed in claim 30, which is characterized in that the visual cues device is specially luminous two Pole pipe or display screen.

32. conduction charging system as claimed in claim 29, which is characterized in that the fault cues device is specially that sound carries Showing device.

33. conduction charging system as claimed in claim 32, which is characterized in that the conduction charging system further includes work and opens It closes, for receiving the work order of user, in order to which the conduction charging system is described electronic according to work order connection Vehicle and the supply network.

34. a kind of electric vehicle, which is characterized in that the electric vehicle is included such as the conduction charging of claim 25-33 any one of them System.