CN113602128A

CN113602128A - Wide voltage output new energy automobile fills electric pile device

Info

Publication number: CN113602128A
Application number: CN202110760619.2A
Authority: CN
Inventors: 李加朋
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-06
Filing date: 2021-07-06
Publication date: 2021-11-05

Abstract

The application relates to a wide voltage output new energy automobile fills electric pile device, including input detection circuitry, power supply protection circuit, drive output circuit. This design's wide voltage output new energy automobile fills electric pile device, input detection circuitry realizes charging signal input at first through resistance partial pressure, then imbeds field effect transistor, handles the high voltage partial pressure of input for little voltage, has solved the defect of filling electric pile in the aspect of low voltage output. The power supply protection circuit ensures the stable output of voltage by controlling the switching tube state of the field effect transistor. The drive output circuit adopts high-frequency drive, and the field effect transistor is used as a driver to realize the high-reliability quick turn-off target, and can reduce turn-off loss, realize the wide output characteristic of the charging pile and effectively improve the efficiency of the charging pile.

Description

Wide voltage output new energy automobile fills electric pile device

Technical Field

The application relates to a fill electric pile and new energy automobile field, concretely relates to wide voltage output new energy automobile fills electric pile device.

Background

Along with new energy automobile's advantage is more and more outstanding, fill electric pile's application also more and more be indispensable. Because the power supply system of different models new energy automobile, in the aspect of operating voltage, rated current, rated voltage and rated power all are all different, nevertheless fill electric pile and need satisfy all battery system's the requirement of charging, therefore wide voltage range output also becomes the important emphasis of filling electric pile. At present, most of charging piles widely adopted in various fields of automobiles use a two-stage topological structure of a front-stage PFC and a rear-stage DC-DC. The later-stage DC-DC converter usually adopts an LLC resonant converter to convert PFC output voltage so as to meet the requirements of various types of output voltage of the new energy automobile. Due to the soft switching characteristics of the front and rear stages of the LLC resonant converter and the good characteristics of the LLC resonant converter at high operating frequency, the loss of the whole converter can be greatly reduced, and meanwhile, the volume and the weight of passive elements can be reduced, so that in a word, the LLC resonant converter can realize high switching frequency, high efficiency and high power density, and is widely used as a preferred topology of a DC-DC converter. Therefore, a structure of adopting a group of resonant cavities and two output transformers is designed to realize the wide output characteristic. When the design is used for power semiconductor device model selection, a device with better performance is selected, and the working efficiency of the circuit is improved. Meanwhile, during design, temperature rise verification is carried out on the power semiconductor device, the inductor and the transformer, and the layout of the power semiconductor device, the inductor and the transformer is improved, so that the size is reduced by adopting a vertical layout mode. Finally, open-loop verification and small-signal modeling are carried out on the design, and a closed-loop compensator is designed, so that the working performance of the whole machine is better. At 650V, the overall efficiency will reach 98. 4 percent, and when the whole machine works under the rated input voltage of 700V, the working efficiency of the whole machine also exceeds 98 percent. Therefore, the output of wide voltage can be realized through the design, and the efficiency of the new energy charging pile is successfully improved.

As shown in fig. 1, for the two-stage sampling circuit of the charging pile in the prior art, a two-stage amplifier is used to collect the current during charging, although the accuracy is greatly improved, the influence caused by the common-mode signal cannot be eliminated, the sampling fault-tolerant rate is low, and meanwhile, the power consumption is very high.

As shown in fig. 2, for the circuit design schematic diagram of the prior art charging pile, a residual current protector is arranged at the charging input end, so that the self-locking condition caused by instantaneous power failure of the charging pile can be protected when the power grid is powered off, but only the resistance is used as a path between the charging pile and the automobile, the voltage output bandwidth is narrow, the electric field influence caused by harmonic waves existing in the power grid and other electronic equipment is difficult to filter, the stability is very poor, and the efficiency is very low.

Disclosure of Invention

Problem (A)

To above-mentioned prior art, prior art's the electric pile that fills has following problem:

1. the charging pile and the current detection module in the prior art are high in energy consumption.

2. The charging pile in the prior art has poor power stability and low charging efficiency.

3. The charging pile in the prior art has narrow voltage output bandwidth.

(II) technical scheme

To above-mentioned technical problem, this application provides wide voltage output new energy automobile fills electric pile device, including input detection circuitry, power supply protection circuit, drive output circuit.

An input detection circuit comprising: a resistor R12, a resistor R13, a capacitor C3, a field effect transistor Q3, a field effect transistor Q4, a field effect transistor Q5, a field effect transistor Q6, a field effect transistor Q10, a field effect transistor Q11, a field effect transistor Q12, a field effect transistor Q13, a triode Q1, a triode Q9, an inductor L3, an inductor L4 and a capacitor C7 form an input detection circuit, a transformer TQ1, a transformer TQ2, a diode D2, a diode D3, a diode D4, a first rectifying bridge formed by a diode D5, a diode D7, a diode D8, a diode D11 and a second rectifying bridge formed by a diode D12, a capacitor C1 and a capacitor C8; the field effect transistor Q3 and the field effect transistor Q4 are of complementary structures, the field effect transistor Q5 and the field effect transistor Q6 are of complementary structures, the field effect transistor Q10 and the field effect transistor Q11 are of complementary structures, and the field effect transistor Q12 and the field effect transistor Q13 are of complementary structures; a first end of the resistor R12 is connected with the input end INPUTA, a second end of the resistor R12 is connected with the drain electrodes of the field effect transistor Q3, the field effect transistor Q4, the field effect transistor Q5 and the field effect transistor Q6, a first end of the capacitor C3, the triode Q1 and the collector electrode of the triode Q9; a first end of the resistor R13 is connected with the input end INPUTB, and a second end of the resistor R13 is connected with sources of the field effect transistor Q10, the field effect transistor Q11, the field effect transistor Q12 and the field effect transistor Q13 and a second end of the capacitor C3; the sources of the field effect transistor Q3 and the field effect transistor Q4 are connected with the drains of the field effect transistor Q10 and the field effect transistor Q11 and the first end of the inductor L3, and the sources of the field effect transistor Q5 and the field effect transistor Q6 are connected with the drains of the field effect transistor Q12 and the field effect transistor Q13 and the first end of the capacitor C7; the base electrode of the triode Q1 is connected with the grid electrodes of the field effect transistor Q3 and the field effect transistor Q4, and the emitter electrode of the triode Q1 is connected with the grid electrodes of the field effect transistor Q5 and the field effect transistor Q6; the base electrode of the triode Q9 is connected with the grid electrodes of the field effect transistor Q10 and the field effect transistor Q11, and the emitter electrode of the triode Q9 is connected with the grid electrodes of the field effect transistor Q12 and the field effect transistor Q13; the second end of the inductor L3 is connected with the first end of the inductor L4, the first end of the primary winding of the transformer TQ1 and the first end of the primary winding of the transformer TQ2, and the second end of the capacitor C7 is connected with the second end of the inductor L4, the second end of the primary winding of the transformer TQ1 and the second end of the primary winding of the transformer TQ 2; a first output end of the first rectifying bridge is connected with VCC and a first end of a capacitor C1, and a second end of a capacitor C1 is connected with a second end of a diode D4 and a second end of a diode D5; the first output end of the second rectifying bridge is connected with the first end of the capacitor C8, and the second output end of the second rectifying bridge is connected with the second end of the capacitor C8 and grounded. Because the input voltage is higher, the resistors R12 and R13 are adopted for voltage division, the reduced voltage signals are sent into a similar H-bridge structure consisting of a field effect transistor Q3, a field effect transistor Q4, a field effect transistor Q5, a field effect transistor Q6, a field effect transistor Q10, a field effect transistor Q11, a field effect transistor Q12 and a field effect transistor Q13 after passing through a filter circuit consisting of a capacitor C3, the requirement of a power switch tube can be reduced through a double-tube parallel structure, and the conduction loss on an inverter full bridge can be reduced through a transistor Q1 and a transistor Q9. The structure that two sets of transformers TQ1 and TQ2 are connected in parallel can ensure the maximum output power and balance the power on each transformer. The current on the diode is reduced and the conduction loss of the diode is reduced through a double-rectifier bridge structure consisting of the diode D2, the diode D3, the diode D4, the diode D5, the diode D7, the diode D8, the diode D11 and the diode D12. Signals are filtered through the capacitor C4 and the capacitor C5, the inductor L2 reduces interference and then stably outputs the signals to the next stage, voltage is stabilized through the input detection circuit, and input loss is greatly reduced.

The power supply protection circuit comprises five capacitors of C, C and C respectively, eight resistors of R, two diodes of D and a bidirectional diode of D, wherein one end of the capacitor of C is connected with the cathode of the diode of D, the other end is connected with the anode of the diode of D, one end of the capacitor of C is connected with the cathode of the diode of D, the other end is grounded, one end of the capacitor of C is connected with a high level VCC, the other end is grounded, one end of the resistor of R is connected with the high level VCC, the other end is connected with one end of the resistor of R, the other end of the resistor of R is connected with the base of a triode Q, the resistor of R, the capacitor of C are connected in series to form a straight circuit and are connected in parallel with two ends of the resistor of R, one end of the resistor of R is connected with a node formed by the resistors of R and R, the other end is respectively connected with one end of the capacitor of C and one end of the resistor of R, the other end of the capacitor R5 is connected with one end of a capacitor C2, the other end of the capacitor C2 is connected with the base electrode of the triode Q2, the other end of the capacitor C5 is respectively connected with one end of a resistor R7 and one end of a capacitor C9, the other end of the resistor R7 is connected with the emitter electrode of the triode Q2, the other end of the capacitor C9 is connected with the resistor R11, the other end of the resistor R11 is connected with one end of a resistor R9 and the base of a triode Q14, the other end of the resistor R9 is connected with the emitter of the triode Q2, the resistor R6 is connected in parallel with the two ends of a capacitor C5, one end of the resistor R6 is connected with a node formed by the resistor R4 and the resistor R5, the other end of the resistor R6 is connected with a node formed by the capacitor C9 and the resistor R7, the anode of the diode D9 is connected with the drain terminal of the field effect transistor Q8, the cathode of the diode D10 is connected with one end of a bidirectional diode D10, the other end of the bidirectional diode D13 is connected with the cathode of the diode D13, and the anode of the diode D13 is grounded. The power supply protection circuit can convert the input voltage of the front stage of the charging pile into the output small voltage to be supplied to the rear stage for use, firstly, the signal processed by the front stage is filtered through a capacitor C1, a capacitor C8, a capacitor C4 and a capacitor C5 to filter high-frequency interference, the signal is transmitted to the base electrode of a triode Q2 through a resistor R1, a resistor R4 and a resistor R2 after voltage division to realize the control of a field effect transistor Q8 and realize the output of the small voltage, and the signal is sampled by the resistor R5 and then output to the field effect transistor Q8, the stability of the output signal can be adjusted in real time, the other part of the signal is limited by the resistor R6, through C9 filtering, the resistor R7, the resistor R9 and the resistor R11 are input to the base of the triode Q14 after voltage division for complementary output, and the power supply protection effect is achieved by matching with the diode D9, the bidirectional diode D10 and the diode D13, so that the output voltage is stably output.

The driving output circuit comprises two triodes Q2 and Q14, two field effect transistors Q8 and Q7, two capacitors C6 and C10, three resistors R3, R10 and R8 and an inductor L1, wherein one end of the inductor L1 is connected with a high-level VCC, the other end of the inductor L1 is connected with a collector of the triode Q12, a source end of the field effect transistor Q8 is connected with a collector of the triode Q12, a grid of the transistor Q2 is connected with an emitter of the triode Q2, an anode of a diode D1 is connected with a collector of the triode Q2, one end of the resistor R3 is connected with a cathode of a diode D1, the other end of the resistor R7 is respectively connected with a grid of the field effect transistor Q7 and one end of a capacitor C6, the other end of the capacitor C6 is connected with a cathode of the diode D9, a source end 7 of the field effect transistor Q7 is connected with a cathode of the diode D1, a drain end of the diode D6 is connected with an anode of the capacitor C10, the cathode of the diode D6 and the other end of the capacitor C10 is connected with the ground, the resistor R10 is connected in parallel with the resistor R8, one end of the resistor R10 is respectively connected with one end of the resistor R8 and the cathode of the diode D9, the other end of the resistor R8 is grounded, the other end of the resistor R8 is grounded, the collector of the triode Q14 is connected with the cathode of the diode D9, the emitter is grounded, and the OUTPUT end OUTPUT is connected with the cathode of the diode D6. Drive output circuit, the signal is inputed to drive circuit through resistance R8, through electric capacity C6 coupling control signal drive ultrafast field effect transistor Q7, can guarantee reliable shutoff and last output capacity, and can reduce the loss, inductance L1 can effectively reduce the input power fluctuation, stabilize the drain input through rectifier diode D1, can realize high-power output in very wide load output range behind the field effect transistor, can effectively control discharge interference through diode D6 and electric capacity C9, reduce the parasitic parameter on the switch tube, improve driver power density, the efficiency of filling electric pile has been improved.

(III) advantageous effects

The wide voltage output new energy automobile of this application fills electric pile device adopts input detection circuitry to make the current stress on the switch reduce by half, can reduce the loss of input simultaneously to power switch tube's requirement reduction. The use of a two transformer configuration reduces the amount of power on a single transformer at maximum output power. Through the power supply protection circuit and the driving circuit, the corresponding dynamic performance of the output of the converter is better improved, the steady-state error of the output voltage is reduced, and the charging efficiency of the charging pile can be greatly improved.

Drawings

Fig. 1 is a two-stage sampling circuit of a charging pile in the prior art.

Fig. 2 is a schematic diagram of a circuit design of a charging pile in the prior art.

Fig. 3 is a schematic circuit diagram of the present application.

Detailed Description

The present invention will be further described with reference to the following examples.

As shown in FIG. 3, the charging pile device for the wide-voltage output new energy automobile comprises an input detection circuit, a power supply protection circuit and a driving output circuit.

In the input detection circuit, because the input voltage is higher, the resistors R12 and R13 are used for voltage division, the reduced voltage signals pass through a filter circuit consisting of a capacitor C3 and then are sent into a similar H-bridge structure consisting of a field effect transistor Q3, a field effect transistor Q4, a field effect transistor Q5, a field effect transistor Q6, a field effect transistor Q10, a field effect transistor Q11, a field effect transistor Q12 and a field effect transistor Q13, the requirement of a power switch tube can be reduced through a double-tube parallel structure, and the conduction loss on an inverter full bridge can be reduced through a transistor Q1 and a transistor Q9. The structure that two sets of transformers TQ1 and TQ2 are connected in parallel can ensure the maximum output power and balance the power on each transformer. The current on the diode is reduced and the conduction loss of the diode is reduced through a double-rectifier bridge structure consisting of the diode D2, the diode D3, the diode D4, the diode D5, the diode D7, the diode D8, the diode D11 and the diode D12. Signals are filtered through the capacitor C4 and the capacitor C5, the inductor L2 reduces interference and then stably outputs the signals to the next stage, voltage is stabilized through the input detection circuit, and input loss is greatly reduced.

Specifically, the input detection circuit includes: a resistor R12, a resistor R13, a capacitor C3, a field effect transistor Q3, a field effect transistor Q4, a field effect transistor Q5, a field effect transistor Q6, a field effect transistor Q10, a field effect transistor Q11, a field effect transistor Q12, a field effect transistor Q13, a triode Q1, a triode Q9, an inductor L3, an inductor L4 and a capacitor C7 form an input detection circuit, a transformer TQ1, a transformer TQ2, a diode D2, a diode D3, a diode D4, a first rectifying bridge formed by a diode D5, a diode D7, a diode D8, a diode D11 and a second rectifying bridge formed by a diode D12, a capacitor C1 and a capacitor C8; the field effect transistor Q3 and the field effect transistor Q4 are of complementary structures, the field effect transistor Q5 and the field effect transistor Q6 are of complementary structures, the field effect transistor Q10 and the field effect transistor Q11 are of complementary structures, and the field effect transistor Q12 and the field effect transistor Q13 are of complementary structures; a first end of the resistor R12 is connected with the input end INPUTA, a second end of the resistor R12 is connected with the drain electrodes of the field effect transistor Q3, the field effect transistor Q4, the field effect transistor Q5 and the field effect transistor Q6, a first end of the capacitor C3, the triode Q1 and the collector electrode of the triode Q9; a first end of the resistor R13 is connected with the input end INPUTB, and a second end of the resistor R13 is connected with sources of the field effect transistor Q10, the field effect transistor Q11, the field effect transistor Q12 and the field effect transistor Q13 and a second end of the capacitor C3; the sources of the field effect transistor Q3 and the field effect transistor Q4 are connected with the drains of the field effect transistor Q10 and the field effect transistor Q11 and the first end of the inductor L3, and the sources of the field effect transistor Q5 and the field effect transistor Q6 are connected with the drains of the field effect transistor Q12 and the field effect transistor Q13 and the first end of the capacitor C7; the base electrode of the triode Q1 is connected with the grid electrodes of the field effect transistor Q3 and the field effect transistor Q4, and the emitter electrode of the triode Q1 is connected with the grid electrodes of the field effect transistor Q5 and the field effect transistor Q6; the base electrode of the triode Q9 is connected with the grid electrodes of the field effect transistor Q10 and the field effect transistor Q11, and the emitter electrode of the triode Q9 is connected with the grid electrodes of the field effect transistor Q12 and the field effect transistor Q13; the second end of the inductor L3 is connected with the first end of the inductor L4, the first end of the primary winding of the transformer TQ1 and the first end of the primary winding of the transformer TQ2, and the second end of the capacitor C7 is connected with the second end of the inductor L4, the second end of the primary winding of the transformer TQ1 and the second end of the primary winding of the transformer TQ 2; a first output end of the first rectifying bridge is connected with VCC and a first end of a capacitor C1, and a second end of a capacitor C1 is connected with a second end of a diode D4 and a second end of a diode D5; the first output end of the second rectifying bridge is connected with the first end of the capacitor C8, and the second output end of the second rectifying bridge is connected with the second end of the capacitor C8 and grounded.

The power supply protection circuit can convert the input voltage of the front stage of the charging pile into the output small voltage to be supplied to the rear stage for use, firstly, the signal processed by the front stage is filtered through a capacitor C1, a capacitor C8, a capacitor C4 and a capacitor C5 to filter high-frequency interference, the signal is transmitted to the base electrode of a triode Q2 through a resistor R1, a resistor R4 and a resistor R2 after voltage division to realize the control of a field effect transistor Q8 and realize the output of the small voltage, and the signal is sampled by the resistor R5 and then output to the field effect transistor Q8, the stability of the output signal can be adjusted in real time, the other part of the signal is limited by the resistor R6, through C9 filtering, the resistor R7, the resistor R9 and the resistor R11 are input to the base of the triode Q14 after voltage division for complementary output, and the power supply protection effect is achieved by matching with the diode D9, the bidirectional diode D10 and the diode D13, so that the output voltage is stably output.

Specifically, the power supply protection circuit comprises five capacitors, namely C1, C4, C5, C8, C9 and C2, eight resistors, namely R1, R2, R4, R5, R6, R7, R9 and R11, two diodes D9 and D13 and a bidirectional diode D10, wherein one end of the capacitor C1 is connected with the negative electrode of the diode D3, the other end of the capacitor C5 is connected with the positive electrode of the diode D5, one end of the capacitor C8 is connected with the negative electrode of the diode D8, the other end of the capacitor C4 is grounded, one end of the capacitor C4 is connected with the high-level VCC, the other end of the resistor R1 is connected with the high-level VCC, the other end of the resistor R2 is connected with one end of the resistor R2, the other end of the resistor R2 is connected with the base of a triode Q2, the resistor R4, the resistor R5 and the capacitor C2 are connected in series to form a straight circuit and connected in parallel with two ends of the resistor R2 and one end of the resistor R2, and one end of the capacitor R2 are connected with a node 2, respectively, One end of a resistor R5 is connected, the other end of a capacitor R5 is connected with one end of a capacitor C2, the other end of a capacitor C2 is connected with a base electrode of a triode Q2, the other end of a capacitor C5 is respectively connected with one end of a resistor R7 and one end of a capacitor C9, the other end of a resistor R7 is connected with an emitter electrode of a triode Q2, the other end of a capacitor C9 is connected with a resistor R11 and a ground wire, the other end of a resistor R11 is connected with one end of a resistor R9 and a base electrode of a triode Q14, the other end of a resistor R9 is connected with an emitter electrode of a triode Q2, a resistor R6 is connected with two ends of a capacitor C5 in parallel, one end of a resistor R6 is connected with a node formed by a resistor R4 and a resistor R5, the other end of the resistor C9 and a node formed by a resistor R7, an anode of a diode D9 is connected with a drain terminal of a field effect transistor Q8, a cathode of a diode D10 is connected with a cathode of the diode D13, the anode of diode D13 is connected to ground.

Among the drive output circuit, the signal is inputed to drive circuit through resistance R8, through electric capacity C6 coupling control signal drive ultrafast field effect transistor Q7, can guarantee reliable shutoff and last output capacity, and can reduce the loss, inductance L1 can effectively reduce the input power fluctuation, stabilize the drain input through rectifier diode D1, can realize high-power output in very wide load output range behind the field effect transistor, can effectively control discharge interference through diode D6 and electric capacity C9, reduce the parasitic parameter on the switch tube, improve driver power density, the efficiency of filling electric pile has been improved.

Specifically, the driving output circuit comprises two triodes Q2, Q14, two field effect transistors Q8, Q7, two capacitors C6, C10, three resistors R3, R10, R8, and an inductor L1, wherein one end of the inductor L1 is connected with a high-level VCC, the other end is connected with a collector of the triode Q12, a source end of the field effect transistor Q8 is connected with a collector of the triode Q12, a gate is connected with an emitter of the triode Q2, an anode of the diode D1 is connected with a collector of the triode Q2, one end of the resistor R3 is connected with a cathode of the diode D1, the other end is connected with a gate of the field effect transistor Q7 and one end of the capacitor C6 respectively, the other end of the capacitor C6 is connected with a cathode of the diode D9, a source end of the field effect transistor Q7 is connected with a cathode of the diode D1, a drain end is connected with an anode of the diode D6, and a cathode of the capacitor C10 is connected with a diode D6, the other end of the resistor R10 is grounded, the resistor R8 is connected in parallel, one end of the resistor R10 is respectively connected with one end of the resistor R8 and the negative electrode of the diode D9, the other end of the resistor R3526 is grounded, the other end of the resistor R8 is grounded, the collector of the triode Q14 is connected with the negative electrode of the diode D9, the emitter of the triode Q14 is grounded, and the OUTPUT end OUTPUT is connected with the negative electrode of the diode D6.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. Wide voltage output new energy automobile fills electric pile device, including input detection circuitry, power supply protection circuit, the drive output circuit who connects gradually, its characterized in that: the input detection circuit includes: a resistor R12, a resistor R13, a capacitor C3, a field effect transistor Q3, a field effect transistor Q4, a field effect transistor Q5, a field effect transistor Q6, a field effect transistor Q10, a field effect transistor Q11, a field effect transistor Q12, a field effect transistor Q13, a triode Q1, a triode Q9, an inductor L3, an inductor L4 and a capacitor C7 form an input detection circuit, a transformer TQ1, a transformer TQ2, a diode D2, a diode D3, a diode D4, a first rectifying bridge formed by a diode D5, a diode D7, a diode D8, a diode D11 and a second rectifying bridge formed by a diode D12, a capacitor C1 and a capacitor C8; the field effect transistor Q3 and the field effect transistor Q4 are of complementary structures, the field effect transistor Q5 and the field effect transistor Q6 are of complementary structures, the field effect transistor Q10 and the field effect transistor Q11 are of complementary structures, and the field effect transistor Q12 and the field effect transistor Q13 are of complementary structures; a first end of the resistor R12 is connected with the input end INPUTA, a second end of the resistor R12 is connected with the drain electrodes of the field effect transistor Q3, the field effect transistor Q4, the field effect transistor Q5 and the field effect transistor Q6, a first end of the capacitor C3, the triode Q1 and the collector electrode of the triode Q9; a first end of the resistor R13 is connected with the input end INPUTB, and a second end of the resistor R13 is connected with sources of the field effect transistor Q10, the field effect transistor Q11, the field effect transistor Q12 and the field effect transistor Q13 and a second end of the capacitor C3; the sources of the field effect transistor Q3 and the field effect transistor Q4 are connected to the drains of the field effect transistor Q10 and the field effect transistor Q11 and to the first terminal of the inductor L3, and the sources of the field effect transistor Q5 and the field effect transistor Q6 are connected to the drains of the field effect transistor Q12 and the field effect transistor Q13 and to the first terminal of the capacitor C7.

2. The wide voltage output new energy automobile fills electric pile device of claim 1, characterized in that: the base electrode of a triode Q1 in the input detection circuit is connected with the grid electrodes of a field effect transistor Q3 and a field effect transistor Q4, and the emitter electrode of the triode Q1 is connected with the grid electrodes of a field effect transistor Q5 and a field effect transistor Q6; the base electrode of the triode Q9 is connected with the grid electrodes of the field effect transistor Q10 and the field effect transistor Q11, and the emitter electrode of the triode Q9 is connected with the grid electrodes of the field effect transistor Q12 and the field effect transistor Q13; the second end of the inductor L3 is connected with the first end of the inductor L4, the first end of the primary winding of the transformer TQ1 and the first end of the primary winding of the transformer TQ2, and the second end of the capacitor C7 is connected with the second end of the inductor L4, the second end of the primary winding of the transformer TQ1 and the second end of the primary winding of the transformer TQ 2; a first output end of the first rectifying bridge is connected with VCC and a first end of a capacitor C1, and a second end of a capacitor C1 is connected with a second end of a diode D4 and a second end of a diode D5; the first output end of the second rectifying bridge is connected with the first end of the capacitor C8, and the second output end of the second rectifying bridge is connected with the second end of the capacitor C8 and grounded.

3. The wide voltage output new energy automobile fills electric pile device of claim 2, characterized in that: the power supply protection circuit comprises five capacitors of C, C and C respectively, eight resistors of R, two diodes D and a bidirectional diode D respectively, wherein one end of the capacitor C is connected with the cathode of the diode D, the other end of the capacitor C is connected with the anode of the diode D, one end of the capacitor C is connected with the cathode of the diode D, the other end of the capacitor C is grounded, one end of the capacitor C is connected with a high-level VCC, the other end of the capacitor C is grounded, one end of the resistor R is connected with the high-level VCC, the other end of the resistor R is connected with one end of the resistor R, the other end of the resistor R is connected with the base of a triode Q, the resistor R and the capacitor C are connected in series to form a straight circuit and are connected with two ends of the resistor R in parallel, one end of the resistor R is connected with a node formed by the resistors R and R, the other end of the capacitor C is connected with one end of the resistor R respectively, the other end of the capacitor R5 is connected with one end of a capacitor C2, the other end of the capacitor C2 is connected with the base electrode of the triode Q2, the other end of the capacitor C5 is respectively connected with one end of a resistor R7 and one end of a capacitor C9, and the other end of the resistor R7 is connected with the emitter electrode of the triode Q2.

4. The wide voltage output new energy automobile fills electric pile device of claim 3, characterized in that: the other end of a capacitor C9 in the power supply protection circuit is connected with a resistor R11 and a ground wire, the other end of a resistor R11 is connected with one end of a resistor R9 and a base electrode of a triode Q14, the other end of a resistor R9 is connected with an emitter electrode of a triode Q2, a resistor R6 is connected with two ends of the capacitor C5 in parallel, one end of a resistor R6 is connected with a node formed by the resistor R4 and the resistor R5, the other end of the resistor R6 is connected with a node formed by the capacitor C9 and the resistor R7, the anode of a diode D9 is connected with the drain terminal of a field effect transistor Q8, the cathode of the diode D10 is connected with one end of a bidirectional diode D13, and the anode of the diode D13 is grounded.

5. The wide voltage output new energy automobile fills electric pile device according to claim 4, characterized in that: the driving output circuit comprises two triodes Q2 and Q14, two field effect transistors Q8 and Q7, two capacitors C6 and C10, three resistors R3, R10 and R8 and an inductor L1, wherein one end of the inductor L1 is connected with a high-level VCC, the other end of the inductor L is connected with a collector of the triode Q12, a source end of the field effect transistor Q8 is connected with a collector of the triode Q14, a grid of the transistor Q2 is connected with an emitter of the triode Q2, an anode of a diode D1 is connected with a collector of the triode Q2, one end of the resistor R3 is connected with a cathode of a diode D1, the other end of the resistor R7 is connected with a grid of the field effect transistor Q7 and one end of a capacitor C6 respectively, the other end of the capacitor C6 is connected with a cathode of the diode D9, a source end of the transistor Q7 is connected with a cathode of the diode D1, a drain end of the diode D6 is connected with an anode of the capacitor C10, the other end of the diode D6 is connected with a cathode of the diode D6, the other end of the capacitor C10 is grounded, the resistor R10 is connected in parallel with the resistor R8, one end of the resistor R10 is respectively connected with one end of the resistor R8 and the cathode of the diode D9, the other end of the resistor R8 is grounded, the other end of the resistor R8 is grounded, the collector of the triode Q14 is connected with the cathode of the diode D9, the emitter is grounded, and the OUTPUT end OUTPUT is connected with the cathode of the diode D6.