CN104362719A - Anti-leakage anti-stealing EV (electric vehicle) charging spot - Google Patents

Abstract

An electric vehicle charging pile that prevents electricity leakage and electricity theft, relates to the field of electric power, and includes an electric vehicle charging pile, which is provided with a transformer, and also includes a power supply identification system. The power supply identification system includes a relay or a thyristor, a relay or The thyristor is connected to the positive pole of the power supply line on the primary side of the transformer; it includes an electric signal frequency generating mechanism and an electric signal frequency receiving mechanism, the electric signal frequency generating mechanism is connected to the negative pole, the electric signal frequency receiving mechanism is connected to the positive pole, and a signal processing system, the signal processing system is connected to the electrical signal frequency receiving mechanism, and the signal processing system is connected to a relay or a thyristor. When the signal received by the electrical signal frequency receiving mechanism does not meet the frequency requirements or the signal cannot be received, the signal processing system controls the relay or the thyristor to be in the disconnected state, thereby cutting off the positive pole, so that the power supply line on the primary side of the transformer is in the disconnected state.

Description

Electric vehicle charging piles that prevent electricity leakage and electricity theft

technical field

The invention relates to the field of electric power, in particular to an electric vehicle charging pile that prevents electricity leakage and electricity theft.

Background technique

When the electric vehicle charging pile is in standby, it only cuts off the power supply from the secondary side of the transformer to the electrical equipment, and the primary side is not turned off. Not only does there exist some energy consumption, but there are also hidden dangers of leakage and electricity theft.

Contents of the invention

The object of the present invention is to provide an electric vehicle charging pile that prevents electricity leakage and electricity theft, so as to solve the above-mentioned problems.

The technical problem solved by the present invention can adopt following technical scheme to realize:

The electric vehicle charging pile that prevents electricity leakage and stealing includes an electric vehicle charging pile, and a transformer is arranged in the electric vehicle charging pile, and it is characterized in that it also includes a power supply identification system, and the power supply identification system includes a relay or a thyristor , the relay or the thyristor is connected to the positive pole of the power supply line on the primary side of the transformer;

The power supply identification system also includes an electric signal frequency generating mechanism and an electric signal frequency receiving mechanism matched with the electric signal frequency generating mechanism, the electric signal frequency generating mechanism is connected to the negative pole of the power supply line, and the electric signal frequency The signal frequency receiving mechanism is connected to the positive pole of the power supply line,

The power supply identification system also includes a signal processing system, the signal input end of the signal processing system is connected to the electrical signal frequency receiving mechanism, and a control signal output end of the signal processing system is connected to the relay or the thyristor.

In the present invention, when the signal meeting the frequency requirement is received by the electric signal frequency receiving mechanism, the signal processing system controls the relay or the thyristor to be in the conduction state, so that the power supply line on the primary side of the transformer is in the conduction state . When the signal received by the electrical signal frequency receiving mechanism does not meet the frequency requirements or the signal cannot be received, the signal processing system controls the relay or the thyristor to be in the disconnected state, thereby cutting off the positive pole, so that the primary side of the transformer The power supply line is disconnected.

The signal processing system considers that the signal with the same frequency as the signal sent by the electrical signal frequency generating mechanism is a signal that meets the frequency requirement. When charging an electric vehicle, the positive pole and the negative pole are connected, the electrical signal frequency receiving mechanism receives the signal from the electrical signal frequency generating mechanism, and the signal processing system controls the relay or the thyristor to be in the conduction state, so that the power supply line at the primary side of the transformer is in conduction state.

When electric leakage or electric shock occurs, the electrical signal frequency receiving mechanism cannot receive the signal sent by the electrical signal frequency generating mechanism, and the electrical signal frequency generating mechanism controls the relay or the thyristor to be in a non-conducting state, so that The power supply line on the primary side of the transformer is in a disconnected state.

The generating frequency of the electrical signal frequency generating mechanism is less than 10 Hz. to reduce costs.

The electric vehicle charging pile that prevents leakage and electricity theft also includes a switch, which is connected to the negative pole of the power supply line on the primary side of the transformer and located behind the electrical signal frequency receiving mechanism. Relays and thyristors can completely cut off the positive pole, and switches can realize the cutting off of the negative pole, thereby completely cutting off the circuit. Further improve the effect of preventing electric leakage and electric stealing.

As a preferred solution, the electric vehicle charging pile for preventing electricity leakage and electricity theft also includes an identification device, the identification device includes a signal receiving module, and the signal receiving module is connected to a signal processing module, and the signal The processing module is connected to a signal transmitting module, the signal receiving module is a signal receiving module that can receive the signal sent by the electrical signal frequency generating mechanism, and the signal transmitting module is a signal that transmits at a frequency consistent with the frequency of the electrical signal receiving The transmitting module of the institution's receiving signal frequency.

The signal processing module is connected to a storage module, and the storage module stores identification information related to the electric vehicle to be charged, such as electric vehicle model and owner information. The signal sent by the electric signal frequency generating mechanism contains the model and owner information of the electric vehicle.

The signal receiving module receives the access signal sent by the electrical signal frequency generating mechanism, the signal processing module generates a control signal after processing the access signal, and the signal processing module transmits the access signal through the signal transmitting module The control signal is sent out. After the electrical signal frequency receiving mechanism receives the control signal, the electrical signal frequency generating mechanism controls the relay or the thyristor to be in a conducting state, so that the power supply line on the primary side of the transformer in conduction state;

During the charging process, when the identity identification device is lost, the electrical signal frequency receiving mechanism cannot receive the control signal, and the electrical signal frequency generating mechanism controls the relay or the thyristor to be in a non-conducting state, so that the The power supply line on the primary side of the transformer is disconnected. By setting an identification chip, unattended electric vehicle charging can be realized.

The identity identification device also includes a housing, and the signal receiving module, the signal processing module, and the signal transmitting module are located in the housing, and the identification device also includes a power supply module, and the power supply module is located in the housing. Outside the housing, a power supply port is provided on the housing, and the power supply module is connected to the signal receiving module, the signal processing module, and the signal transmitting module through the power supply port. As a preferred solution, the housing is a cigarette lighter housing of an automobile, and the signal receiving module, the signal processing module, and the signal transmitting module are all located in the cigarette lighter housing. A battery of an automobile can be used as the power supply module. The battery of the mobile phone can also be used as the power supply module.

The electric vehicle charging pile that prevents leakage and electricity theft also includes a load current regulation system, the load current regulation system includes a control module, the control module is provided with a control signal output terminal, and the control module passes the control signal output terminal connected to a voltage adjustment unit, the signal output end of the voltage adjustment unit is connected to a signal processing module for current control;

The secondary side of the transformer is provided with a constant current output circuit, the signal processing module for current control receives the adjustment signal of the voltage adjustment unit, and after analyzing and processing the adjustment signal, outputs it to the constant current output circuit to realize the The adjustment of the output current of the constant current output circuit is described. The invention can adjust the output current to meet the charging demands of multiple brands and multiple models of electric vehicles.

The signal processing module for current control is connected to the signal processing system, and the signal processing system is connected to a host computer through the electrical signal frequency generating mechanism for communication. During the charging process, the signal processing system uploads the current parameters, charging time, electric vehicle model, and vehicle owner information to the host computer.

The control module is also provided with a control signal input terminal, and the control signal input terminal is connected to the signal processing system;

The upper computer is provided with a static database for current adjustment that contains the output value of the constant current output circuit that matches the control signal of the voltage adjustment unit. The upper computer judges the output value of the constant current output circuit that needs to be adjusted, and searches for a matching The control signal is transmitted to the control module through the signal processing system, and then output to the voltage adjustment unit by the control module, so as to realize the adjustment of the output current of the constant current output circuit.

Also be provided with a dynamic database in the described upper computer, described upper computer records the input signal of the outside world, and stores in dynamic database, and dynamic database is expanded during use, constitutes a dynamic database with self-learning mode; The upper computer judges the output value of the constant current output circuit that needs to be adjusted, and outputs the control signal according to the value that matches the output value of the constant current output circuit obtained in the dynamic database and the control signal of the voltage adjustment unit, through the signal processing system The control signal is transmitted to the control module, and then output to the voltage adjustment unit by the control module, so as to realize the adjustment of the output current of the constant current output circuit.

The signal processing module for current control may use signal processing methods such as short-circuit output, filtering, signal limiting, and signal conversion to process the adjustment signal. In order to eliminate interference and signal shaping. The adjustment signal here may be in the form of electrical signals such as voltage, current, PWM, and frequency.

The voltage adjustment unit receives the control signal output by the control module, and adjusts between the terminal AH (the highest value of the adjustment signal) and the terminal AW (the adjustment signal) and between the terminal AW (the adjustment signal) and AL (the lowest value of the adjustment signal). The equivalent resistance value between the terminals realizes the control of the adjustment signal output to the current control signal processing module. The adjustment signal here may be in the form of electrical signals such as voltage, current, PWM, and frequency.

Between the AH terminal and the AW terminal and between the AW terminal and the AL terminal of the voltage adjustment unit is a circuit or chip equivalent to a resistor, and the equivalent resistance value is adjusted according to the output signal of the control module.

It also includes a reference voltage module, the ORV+ (maximum output voltage) terminal and ORV- (minimum output voltage) terminal of the reference voltage module are respectively connected to the AH terminal and AL terminal of the voltage adjustment unit, so as to control the voltage Adjust the output signal of the module within the set range. A reference voltage is generated according to the requirements of the adjustment signal output by the current control signal processing module.

A divider resistor is also connected between the AH terminal of the voltage adjustment unit and the ORV+ terminal of the reference voltage module, and another divider is connected between the AL terminal of the voltage adjustment unit and the ORV- terminal of the reference voltage module. The two voltage dividing resistors form a voltage dividing circuit with the AH terminal, AL terminal and AW terminal of the voltage adjustment unit. The voltage output by the reference voltage module is divided by the voltage divider circuit, and an adjustment signal is output to the current control signal processing module to determine that the output signal of the current control signal processing module is within the set range . Here, the output adjustment signal is in the form of voltage, PWM and other signals.

The adjustment signal output by the voltage adjustment unit can also be controlled by the control signal output by the control module.

The control module is connected to at least two of the voltage adjustment units, and at least two of the voltage adjustment units are respectively connected to a signal processing module for current control, and are respectively connected to the constant current output circuit through the signal processing modules for current control; It also includes at least two reference voltage modules, and voltage dividing resistors are respectively arranged between the at least two reference voltage modules and the voltage adjustment unit. Realize one control module to control two constant current output circuits.

The control module adopts an intelligent unit such as an MCU (microcontroller), and may also be an interface circuit capable of adjusting a working state such as a digital logic circuit, a switch circuit, and an analog adjustment circuit.

The signal processing module for current control and the constant current output circuit can respectively receive the electrical signal output by the control module, and adjust their working states according to the electrical signal output by the control module.

Description of drawings

Fig. 1 is a circuit block diagram of the present invention.

Detailed ways

In the following, an electric vehicle charging pile that prevents electricity leakage and electricity theft according to the present invention will be further described in detail according to the accompanying drawings and specific embodiments.

The electric vehicle charging pile for preventing electricity leakage and electricity theft includes an electric vehicle charging pile in which a transformer (14) is arranged, and a power supply identification system including a relay or a thyristor (11), a relay Or the positive pole of the power supply line of the primary side of the thyristor (11) access transformer (14); the power supply identification system also includes an electrical signal frequency generating mechanism (9) and a supporting electrical signal frequency receiving mechanism (9) Mechanism (12), the electric signal frequency generating mechanism is connected to the negative pole of the power supply line, the electric signal frequency receiving mechanism is connected to the positive pole of the power supply line, and the power supply identification system also includes a signal processing system (13), the signal input terminal of the signal processing system is connected to The electrical signal frequency receiving mechanism and a control signal output end of the signal processing system are connected to a relay or a thyristor (11). In the present invention, when the signal meeting the frequency requirements is received by the electric signal frequency receiving mechanism, the signal processing system (13) controls the relay or the thyristor (11) to be in a conduction state, so that the power supply line on the primary side of the transformer (14) is in conduction state. When the signal received by the electric signal frequency receiving mechanism (12) does not meet the frequency requirements or the signal cannot be received, the signal processing system (13) controls the relay or the thyristor (11) to be in the disconnected state, thereby cutting off the positive pole, so that the transformer (14 ) The power supply line on the primary side is disconnected.

The signal processing system (13) considers the signal consistent with the frequency of the signal sent by the electrical signal frequency generating mechanism (9) as a signal meeting the frequency requirement. When charging the electric vehicle (8), the positive pole and the negative pole are connected, the electric signal frequency receiving mechanism (12) receives the signal from the electric signal frequency generating mechanism (9), and the signal processing system (13) controls the relay or thyristor (11) is in a conduction state, so that the power supply line on the primary side of the transformer (14) is in a conduction state. When electric leakage or electric shock occurs, the electric signal frequency receiving mechanism (12) cannot receive the signal sent by the electric signal frequency generating mechanism (9), and the electric signal frequency generating mechanism (9) controls the relay or the thyristor (11) to be in a non-conductive state, Thus, the power supply line of the primary side of the transformer (14) is in a disconnected state.

The generating frequency of the electric signal frequency generating mechanism (9) is less than 10 Hz. to reduce costs.

The anti-leakage and stealing electric vehicle charging pile also includes a switch (10), the switch (10) is connected to the negative pole of the power supply line on the primary side of the transformer (14), and is located behind the electric signal frequency receiving mechanism (12). The relay and the thyristor can realize the complete cutting off of the positive pole, and the switch (10) can realize the cutting off of the negative pole, thereby completely cutting off the circuit. Further improve the effect of preventing electric leakage and electric stealing.

As a preferred solution, the electric vehicle charging pile for preventing electricity leakage and electricity theft also includes an identification device, the identification device includes a signal receiving module, the signal receiving module is connected to a signal processing module, and the signal processing module is connected to a signal transmitting module, The signal receiving module is a signal receiving module capable of receiving signals sent by the electrical signal frequency generating mechanism (9), and the signal transmitting module is a transmitting module whose transmitted signal frequency conforms to the received signal frequency of the electrical signal frequency receiving mechanism (12).

The signal processing module is connected with a storage module, and the storage module stores the identification information related to the electric vehicle to be charged, such as the model of the electric vehicle and the information of the owner. The signal sent by the electric signal frequency generating mechanism (9) contains electric vehicle model and vehicle owner information.

The signal receiving module receives the access signal sent by the electrical signal frequency generating mechanism (9), and the signal processing module generates a control signal after processing the access signal, and the signal processing module sends the control signal through the signal transmitting module, and the electrical signal frequency receiving mechanism ( 12) After receiving the control signal, the electric signal frequency generating mechanism (9) controls the relay or the thyristor (11) to be in the conduction state, so that the power supply line on the primary side of the transformer (14) is in the conduction state; during the charging process, the identity is lost When marking the device, the electric signal frequency receiving mechanism (12) cannot receive the control signal, and the electric signal frequency generating mechanism (9) controls the relay or the thyristor (11) to be in a non-conductive state, so that the power supply line on the primary side of the transformer (14) is disconnected. By setting the identification chip, unattended charging of the electric vehicle (8) can be realized.

The identity identification device also includes a shell, the signal receiving module, the signal processing module, and the signal transmitting module are all located in the shell, the identity identification device also includes a power supply module, the power supply module is located outside the shell, and a power supply port is provided on the shell, and the power supply module is powered by The port is connected with a signal receiving module, a signal processing module and a signal transmitting module. As a preferred solution, the casing adopts the casing of a cigarette lighter of an automobile, and the signal receiving module, the signal processing module, and the signal transmitting module are all located in the casing of the cigarette lighter. The battery of the car can be used as the power module. The battery of the mobile phone can also be used as the power module.

The charging pile for electric vehicles that prevents leakage and electricity theft also includes a load current regulation system, the load current regulation system includes a control module (6), the control module (6) is provided with a control signal output terminal, and the control module (6) controls the The signal output end is connected to a voltage adjustment unit (2), and the signal output end of the voltage adjustment unit (2) is connected to a current control signal processing module (5); the secondary side of the transformer (14) is provided with a constant current output circuit (7 ), the signal processing module (5) for current control receives the adjustment signal of the voltage adjustment unit (2), and after analyzing and processing the adjustment signal, outputs it to the constant current output circuit (7) to realize the output of the constant current output circuit (7) current regulation. The invention can adjust the output current to meet the charging requirements of electric vehicles (8) of multiple brands and models. The signal processing module (5) for current control is connected to the signal processing system (13), and the signal processing system (13) is connected to a host computer via the electrical signal frequency generating mechanism (9). During the charging process, the signal processing system (13) uploads the current parameters, charging time, electric vehicle model and vehicle owner information to the host computer.

The control module (6) is also provided with a control signal input terminal, and the control signal input terminal is connected to the signal processing system (13); the upper computer is provided with a control unit (2) including the output value of the constant current output circuit (7) and the voltage adjustment unit (2). A static database is used for current regulation with matching signals. The upper computer judges the output value of the constant current output circuit (7) to be adjusted, searches for a matching control signal, and transmits the control signal to the control module (6) through the signal processing system (13). ), and then output to the voltage adjustment unit (2) by the control module (6) to realize the adjustment of the output current of the constant current output circuit (7).

There is also a dynamic database in the upper computer. The upper computer records the input signals from the outside and stores them in the dynamic database. The dynamic database can be expanded during use to form a dynamic database with self-learning mode; the upper computer judges what needs to be adjusted. The output value of the constant current output circuit (7) is based on the output value of the constant current output circuit (7) obtained by continuous learning in the dynamic database and the value matching the control signal of the voltage adjustment unit (2) to output the control signal, through signal processing The system (13) transmits the control signal to the control module (6), and then the control module (6) outputs it to the voltage adjustment unit (2), so as to realize the adjustment of the output current of the constant current output circuit (7).

The signal processing module (5) for current control can process the adjustment signal by using signal processing methods such as short-circuit output, filtering, signal limiting, and signal conversion. In order to eliminate interference and signal shaping. The adjustment signal here may be in the form of electrical signals such as voltage, current, PWM, and frequency. The voltage adjustment unit (2) receives the control signal output by the control module (6), and adjusts the voltage between the AH (highest value of the adjustment signal) terminal and the AW (adjustment signal) terminal and between the AW (adjustment signal) terminal and the AL (lowest value of the adjustment signal) terminal. The equivalent resistance value between the terminals realizes the control of the adjustment signal output to the signal processing module (5) for current control. The adjustment signal here may be in the form of electrical signals such as voltage, current, PWM, and frequency. Between the AH terminal and the AW terminal and between the AW terminal and the AL terminal of the voltage adjustment unit (2) is a circuit or chip equivalent to a resistor, and the equivalent resistance value is adjusted according to the output signal of the control module (6). It also includes a reference voltage module (1), the ORV+ (maximum output voltage) terminal and ORV- (minimum output voltage) terminal of the reference voltage module (1) are respectively connected to the AH terminal and AL terminal of the voltage adjustment unit (2), In order to control the output signal of the voltage adjustment module within the set range. The reference voltage is generated according to the requirements of the adjustment signal output by the signal processing module (5) for current control. A voltage dividing resistor (3) is also connected between the AH terminal of the voltage adjustment unit (2) and the ORV+ terminal of the reference voltage module 1, and between the AL terminal of the voltage adjustment unit (2) and the ORV- terminal of the reference voltage module (1) Another voltage dividing resistor (4) is connected between them, and the two voltage dividing resistors and the AH terminal, AL terminal and AW terminal of the voltage adjustment unit (2) form a voltage dividing circuit. The voltage output by the reference voltage module (1) is divided by the voltage divider circuit, and an adjustment signal is output to the current control signal processing module (5), so as to determine that the output signal of the current control signal processing module (5) is within the set range Inside. Here, the output adjustment signal is in the form of voltage, PWM and other signals. The adjustment signal output by the voltage adjustment unit (2) can also be controlled by the control signal output by the control module (6).

The control module (6) is connected to at least two voltage adjustment units (2), and at least two voltage adjustment units (2) are respectively connected to a signal processing module (5) for current control, and are respectively connected to each other through the signal processing module (5) for current control. The constant current output circuit (7); also includes at least two reference voltage modules (1), and voltage dividing resistors are respectively arranged between the at least two reference voltage modules (1) and the voltage adjustment unit (2). A control module (6) is implemented to control two constant current output circuits (7). The control module (6) adopts intelligent units such as MCU (microcontroller), and can also be an interface circuit that can adjust the working state such as a digital logic circuit, a switch circuit, and an analog adjustment circuit. The current control signal processing module (5) and the constant current output circuit (7) can respectively receive the electrical signals output by the control module (6), and adjust their working states according to the electrical signals output by the control module (6).

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. the anticreep electric automobile charging pile with sneaking current, comprise an electric automobile charging pile, a transformer is provided with in described electric automobile charging pile, it is characterized in that: also comprise a power supply recognition system, described power supply recognition system comprises a relay or thyristor, and described relay or described thyristor access the positive pole of the supply line of described transformer primary side;

Described power supply recognition system also comprises the supporting signal frequency receiving mechanism of a signal frequency generating mechanism and one and described signal frequency generating mechanism, described signal frequency generating mechanism accesses the negative pole of described supply line, described signal frequency receiving mechanism accesses the positive pole of described supply line

Described power supply recognition system also comprises a signal processing system, and the signal input part of described signal processing system connects described signal frequency receiving mechanism, and a control signal output of described signal processing system connects described relay or described thyristor.

2. the anticreep electric automobile charging pile with sneaking current according to claim 1, it is characterized in that: signal frequency receiving mechanism receive meet the signal of frequency requirement time, described signal processing system controls described relay or described thyristor is in conducting state, thus makes the supply line of described transformer primary side be in conducting state;

When the signal that signal frequency receiving mechanism receives does not meet frequency requirement or does not receive signal, described signal processing system controls described relay or described thyristor is in off-state, thus cut-out positive pole, make the supply line of described transformer primary side be in off-state.

3. the anticreep electric automobile charging pile with sneaking current according to claim 2, is characterized in that: described signal processing system thinks that the consistent signal of signal frequency sent with described signal frequency generating mechanism is the signal meeting frequency requirement;

During for charging electric vehicle, described positive pole and described negative pole are connected, described signal frequency receiving mechanism receives the signal that described signal frequency generating mechanism sends, described signal processing system controls described relay or described thyristor is in conducting state, thus makes the supply line of described transformer primary side be in conducting state;

When there is electric leakage or get an electric shock, described signal frequency receiving mechanism does not receive the signal that described signal frequency generating mechanism sends, described signal frequency generating mechanism controls described relay or described thyristor is in not on-state, thus makes the supply line of described transformer primary side be in off-state.

4. the anticreep electric automobile charging pile with sneaking current according to claim 1, it is characterized in that: electric automobile charging pile that is anticreep and power stealing also comprises a switch, described switch accesses the negative pole of the supply line of described transformer primary side, is positioned at the rear of described signal frequency receiving mechanism.

5. the anticreep electric automobile charging pile with sneaking current according to claim 1, it is characterized in that: described electric automobile charging pile that is anticreep and power stealing also comprises an identity identity device, described identify label device comprises a signal receiving module, described signal receiving module connects a signal processing module, described signal processing module connects a signal emission module, described signal receiving module is a signal receiving module that can receive the signal that described signal frequency generating mechanism sends, described signal emission module is the transmitter module that the signal frequency of a transmitting meets the Received signal strength frequency of described signal frequency receiving mechanism.

6. the anticreep electric automobile charging pile with sneaking current according to claim 5, it is characterized in that: described identify label device also comprises a shell, described signal receiving module, described signal processing module, described signal emission module are all positioned at described shell, described identify label device also comprises a power module, described power module is positioned at outside described shell, described shell is provided with a power supply port, and described power module connects described signal receiving module, described signal processing module, described signal emission module by described power supply port.

7. the anticreep electric automobile charging pile with sneaking current according to claim 1, it is characterized in that: the anticreep electric automobile charging pile with sneaking current, also comprise a load current regulating system, described load current regulating system comprises a control module, described control module is provided with a control signal output, described control module connects a voltage-adjusting unit by control signal output, and the signal output part of described voltage-adjusting unit connects a Current Control signal processing module;

The secondary side of described transformer is provided with a constant current output circuit, described Current Control signal processing module receives the conditioning signal of described voltage-adjusting unit, and after analyzing and processing is carried out to conditioning signal, export to constant current output circuit, realize the adjustment of described constant current output circuit output current.

8. the anticreep electric automobile charging pile with sneaking current according to claim 7, it is characterized in that: described Current Control signal processing module connects described signal processing system, described signal processing system is by host computer described in described signal frequency generating mechanism communication connection one;

Described control module is also provided with a control signal input, and described control signal input connects described signal processing system.

9. the anticreep electric automobile charging pile with sneaking current according to claim 8, it is characterized in that: in described host computer, be provided with a Current adjustment static database matched containing the output valve of constant current output circuit and the control signal of voltage-adjusting unit, described host computer judges the output valve needing the constant current output circuit regulated, search the control signal matched, by described signal processing system, described control signal is passed to described control module, described voltage-adjusting unit is exported to again by described control module, realize the adjustment to constant current output circuit output current.

10. the anticreep electric automobile charging pile with sneaking current according to claim 8, it is characterized in that: in described host computer, be also provided with a dynamic data base, described host computer input signal to external world carries out record, and stored in dynamic data base, dynamic data base is in use expanded, and forms the dynamic data base that has Self-learning Model; Described host computer judges the output valve needing the constant current output circuit regulated, the value that the output valve of constant current output circuit obtained according to unceasing study in dynamic data base and the control signal of voltage-adjusting unit match exports control signal, by described signal processing system, described control signal is passed to described control module, export to described voltage-adjusting unit by described control module again, realize the adjustment to constant current output circuit output current.