CN105375572B - A kind of intelligent detection device of electric vehicle alternating-current charging pile - Google Patents

A kind of intelligent detection device of electric vehicle alternating-current charging pile Download PDF

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Publication number
CN105375572B
CN105375572B CN201510843817.XA CN201510843817A CN105375572B CN 105375572 B CN105375572 B CN 105375572B CN 201510843817 A CN201510843817 A CN 201510843817A CN 105375572 B CN105375572 B CN 105375572B
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CN
China
Prior art keywords
circuit
feet
resistance
detection
capacitance
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CN201510843817.XA
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Chinese (zh)
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CN105375572A (en
Inventor
张宏宾
岑育和
余建东
毛军权
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上海循道新能源科技有限公司
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Priority to CN201510843817.XA priority Critical patent/CN105375572B/en
Publication of CN105375572A publication Critical patent/CN105375572A/en
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Publication of CN105375572B publication Critical patent/CN105375572B/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/022Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters characterised by the type of converter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30Constructional details of charging stations
    • B60L53/31Charging columns specially adapted for electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/12Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/12Electric charging stations

Abstract

The invention discloses a kind of intelligent detection device of electric vehicle alternating-current charging pile, including CPU processing systems, LCD display, auxiliary power circuit, power switch circuit, key circuit, car end charging inlet circuit, CC detection circuits, CP detection circuits, indicator light circuit, PWM detection circuits, programme control circut, meter circuit;The present invention has the following advantages:(1), the detection of charge cable power is realized;(2) realize the detection of the frequency, duty cycle, amplitude of the PWM of charging pile, and give display and judge result;(3), overloaded by the duty cycle of PWM, control bearing power, examine the overcurrent protection function of charging pile;(5) detection of the voltage and current value in charging process is realized;(6), simulated automotive abnormal phenomenon, judges that can charging pile detect and handle;(7), possesses overvoltage protection, under-voltage protection, overcurrent protection, overheat protector, overcharges protection.

Description

A kind of intelligent detection device of electric vehicle alternating-current charging pile

Technical field

The present invention relates to a kind of detection device, more particularly to a kind of intelligent measurement for being exclusively used in electric vehicle alternating-current charging pile Device;Belong to electric automobile intelligent charge facility applied technical field.

Background technology

Electric vehicle alternating-current charging pile intelligent detection device is detection device in fill facility to electric automobile one, popular next The interface function of unit simulation electric automobile is said, to detect the interface of alternating-current charging pile and charging sequential function;By with Alternating-current charging pile communicates, and can detect the frequency of the pwm signal of charging pile transmission, duty cycle, amplitude, while according to duty cycle table The maximum output current ability shown controls load box to be overloaded by charging current, detecting whether charging pile possesses overload protection energy Power, this function are very crucial for charging pile;

Charging pile detection device on the market extremely lacks at present, and function is single, can only simulate car end and allow the function of filling, There is no detection function, without arbitration functions, without most test function.

The content of the invention

The present invention is in order to make up for the deficiencies of the prior art, there is provided a kind of each state simple in structure, automatic imitation vehicle, The flow of analog charge, detects the sequence problem in charging process, while can adjust bearing power, can effectively simulation fill Electric process and analog charge exception procedure, examine the interface capability of alternating-current charging pile and the ability of major protective function;

To achieve the above object, the present invention adopts the technical scheme that:

A kind of intelligent detection device of electric vehicle alternating-current charging pile, including CPU processing systems, LCD display, auxiliary electricity Source circuit, power switch circuit, key circuit, car end charging inlet circuit, CC detection circuits, CP detection circuits, indicator light electricity Road, PWM detection circuits, programme control circut, meter circuit;Wherein,

The CPU processing systems, charging flow is completed for controlling, and relevant signal acquisition and protection act;Can be with Program-controlled adjusting load, tests out whether charging pile has overcurrent protection function etc.;

The LCD display, for showing the signal message detected and test result;

The auxiliary power circuit, is used for realization the conversion that+5V arrives+3.3V, and operating voltage is provided to CPU processing systems;

Whether the power switch circuit, press for detection switch, connects different power supplys;

Whether the key circuit, press for detection switch;

Whether car end charging inlet circuit, the output of electrical source of power is connected to for detecting car end, electrical source of power is believed Number being converted to Transistor-Transistor Logic level signal facilitates CPU to detect;

The CC detection circuits, for detecting CC signals;

The CP detection circuits, for detecting CP signals;

The indicator light circuit, for prompting to test whether to pass through;

The PWM detection circuits, are used for realization and CP+, the frequency and duty cycle of CP- are detected;

The programme control circut, for loading the load of certain current value, analog charge automatically;

The meter circuit, for detecting the voltage and current value of charging pile output;

Further improve, CPU processor U1 is equipped with the CPU processing systems;Connect on 37 feet of the CPU processor U1 It is connected to a resistance R108;55 feet of the CPU processor U1 are connected with the auxiliary power circuit;The CPU processor 15~18 feet of U1 are connected with the power switch circuit, key circuit respectively;29 feet of the CPU processor U1 with it is described Car end charging inlet circuit is connected;65 feet of the CPU processor U1 are connected with the CC detection circuits;At the CPU 47 feet, 48 feet, 51 feet of reason device U1 are connected with the meter circuit;25~26 feet of the CPU processor U1 and the journey Control circuit is connected;23~24 feet, 67 feet of the CPU processor U1 are connected with the PWM detection circuits;The CPU 33~34 feet, 63~64 feet of processor U1 are connected with the indicator light circuit;56 feet of the CPU processor U1 and institute CP detection circuits are stated to be connected;78~88 feet of the CPU processor U1 are connected with the LCD display;

Further improving, auxiliary power circuit described in the auxiliary power circuit includes four filter circuits, and respectively the One filter circuit, the second filter circuit, the 3rd filter circuit, the 4th filter circuit;Voltage-stabiliser tube U3, display circuit and Wiring port J10;;Pass through voltage-stabiliser tube U3 and the first filter circuit, the second filter circuit, the 3rd filter circuit, the 4th filter circuit, display The cooperation of circuit and Wiring port J10 the, by+5V voltage transformations of input into+3.3V voltage outputs;

Further improve, four switches be equipped with the power switch circuit, respectively switch S1, switch S2, switch S3, Switch S4;Under the control of CPU processor U1, by this four switch S1, S2, S3, S4 break-makes, realize whether unicom power supply Inspection;The power switch circuit is identical with the circuit structure of the key circuit;

Further improve, car end charging inlet circuit includes rectifier D501, optical coupler U501, resistance R502/ R503, capacitance C501;Under the control of CPU processor U1, pass through rectifier D501, optical coupler U501 and surrounding resistance R502/ R503, the collective effect of capacitance C501 realize whether car end is connected to the inspection of electrical source of power output;Meanwhile by electrical source of power signal Being converted to Transistor-Transistor Logic level signal facilitates CPU to detect;

Further improve, the CC detection circuits include amplifier U1A, resistance R15/R16/R19/R20/R22/R23, electricity Hold C19/C20/C22/C23;Under the control of CPU processor U1, pass through amplifier U1A and the resistance R15/R16/R19/ of surrounding The common mating reaction of R20/R22/R23, capacitance C19/C20/C22/C23, realize the inspection of CC signals;

Further improve, the programme control circut includes communication chip U6, capacitance C33/C34/C36/C37/C31/C32/ C29/C30;, Wiring port J5;Under the control of CPU processor U1, by the connection of communication chip U6 and Wiring port J5, and Under the mating reaction of surrounding load capacitance C33/C34/C36/C37/C31/C32/C29/C30, realize the communication of RS232, make journey Control circuit can simulate the different charge powers at car end;

Further improve, the meter circuit includes ammeter chip U8, resistance R41/R42/R44;CPU processor U1's Under control, under the mating reaction by load resistance R41/R42/R44 around ammeter chip U8, realization is metering and billing exactly Data are provided, operation ammeter is interacted to by serial line interface and ancillary equipment ammeter;

Further improve, the indicator light circuit includes resistance R205/R206/R207/R208, light emitting diode D202/ D203/D204/D205;Under the control of CPU processor U1, realized and referred to by light emitting diode D202/D203/D204/D205 Show equipment and the state of charging;

Further improve, the LCD display includes resistance R50/R51, adjustable resistance RX1, capacitance C50, inductance B1/ B2/B3/B6/B7/B8/B9/B10/B11/B12/B13, display CN2, triode Q2;Under the control of CPU processor U1, lead to Cross display CN2 show with charging pile interaction in charging voltage, electric current, CC states, frequency, duty cycle, the amplitude of CP, with And test result;

Further improve, the CP detection circuits include transistor D15/D16, inductance B4, resistance R2, controlling switch SW1; Under the control of CPU processor U1, by transistor D15/D16, inductance B4, resistance R2, the mating reaction of controlling switch SW1 are real The detection of existing CP signals, output CP+ signals, CP- signals;

Further improve, the PWM detection circuits include CP+ signal deteching circuits, CP- signal deteching circuits;The CP+ Signal deteching circuit includes amplifier U3A, resistance R404/R405/R401, capacitance C109/C209;The CP- signal detections electricity Road includes amplifier U4A/U401A, resistance R410/R41/R407/R408;By the detection to CP+ signals, CP- signals come real Now to CP+, the detection of the frequency and duty cycle of CP-;

Compared with prior art, using the above scheme, the beneficial effects of the invention are as follows:The present invention has the following advantages: (1), by CC, the power of charge cable can be detected;(2) frequency of the PWM of charging pile can be detected by CP, duty cycle, Amplitude, and give display and judge result;(3), a duty cycle of end PWM is detected, control bearing power overload, examines charging The overcurrent protection function of stake;(4), the relevant resistance value of CP is changed, test charging pile judges whether interval value meets to CP values National standard, and provide result;(5) the voltage and current value in charging process can be tested, it is for reference;(6), can be different with simulated automotive Often occur as judging whether charging pile is capable of detecting when and handles;(7), defencive function is complete:Overvoltage protection, under-voltage protection, overcurrent Protection, overheat protector, overcharges protection;Particularly possess overheat protector at charging interface, can eliminate safe hidden trouble;(8), system Automatic and manual test function.

Brief description of the drawings

Fig. 1 is the structure diagram of the present invention;

Fig. 2 is CPU processing systems Part I circuit diagram in the present invention;

Fig. 3 is CPU processing systems Part II circuit diagram in the present invention;

Fig. 4 is the circuit diagram of auxiliary power circuit in the present invention;

Fig. 5 is the circuit diagram of power switch circuit in the present invention;

Fig. 6 is the circuit diagram of car end charging inlet circuit in the present invention;

Fig. 7 is the circuit diagram of CC detection circuits in the present invention;

Fig. 8 is the circuit diagram of programme control circut in the present invention;

Fig. 9 is the circuit diagram of meter circuit in the present invention;

Figure 10 is the circuit diagram of indicator light circuit in the present invention;

Figure 11 is the circuit diagram of LCD display in the present invention;

Figure 12 is the circuit diagram of CP detection circuits in the present invention;

Figure 13 is the circuit diagram of PWM detection circuits in the present invention;

Figure 14 is the work flow diagram of the present invention;

Embodiment

The present invention is further described with reference to the accompanying drawings and examples.

As shown in Figure 1, a kind of intelligent detection device of electric vehicle alternating-current charging pile, including CPU processing systems, LCD are shown Show device, auxiliary power circuit, power switch circuit, key circuit, car end charging inlet circuit, CC detection circuits, CP detection electricity Road, indicator light circuit, PWM detection circuits, programme control circut, meter circuit;Wherein, the CPU processing systems, are completed for controlling Charging flow, and relevant signal acquisition and protection act;Can program-controlled adjusting load, test out whether charging pile had Flow defencive function etc.;The LCD display, for showing the signal message detected and test result;The accessory power supply electricity Road, is used for realization the conversion that+5V arrives+3.3V, and operating voltage is provided to CPU processing systems;The power switch circuit, for examining Whether slowdown monitoring switch is pressed, and connects different power supplys;Whether the key circuit, press for detection switch;The car end charging Whether interface circuit, the output of electrical source of power is connected to for detecting car end, and electrical source of power signal is converted to Transistor-Transistor Logic level signal side Just CPU is detected;The CC detection circuits, for detecting CC signals;The CP detection circuits, for detecting CP signals;The finger Indication lamp circuit, for prompting to test whether to pass through;The PWM detection circuits, are used for realization to CP+, the frequency and duty cycle of CP- Detection;The programme control circut, for loading the load of certain current value, analog charge automatically;The meter circuit, for detecting The voltage and current value of charging pile output;

As shown in Figure 2 and Figure 3, it is equipped with CPU processor U1 in the CPU processing systems;37 feet of the CPU processor U1 On be connected with a resistance R108;A foot of the resistance R108 is connected with 37 feet of the CPU processor U1, and another foot connects Ground;

55 feet of the CPU processor U1 are connected with the auxiliary power circuit;The 15~18 of the CPU processor U1 Foot is connected with the power switch circuit, key circuit respectively;29 feet of the CPU processor U1 and car end charging Mouth circuit is connected;65 feet of the CPU processor U1 are connected with the CC detection circuits;The 47 of the CPU processor U1 Foot, 48 feet, 51 feet are connected with the meter circuit;25~26 feet of the CPU processor U1 are connected with the programme control circut Connect;23~24 feet, 67 feet of the CPU processor U1 are connected with the PWM detection circuits;The CPU processor U1's 33~34 feet, 63~64 feet are connected with the indicator light circuit;56 feet of the CPU processor U1 and CP detection electricity Road is connected;78~88 feet of the CPU processor U1 are connected with the LCD display;

Preferably, the CPU processor U1 uses the microprocessor of model STM32F103VET6;The resistance R108 Resistance value be 10K Ω;

The CPU processor U1 is integrated with the PWM waveform detector of automobile control guiding, can be with simulating vehicle to charging The frequency of the PWM waveform of stake, duty cycle, amplitude;

For simulating the CC at car end in GB20234.2, CP functions, while control whole equipment operation and simulated automotive charging Process, can detect the interface parameters of alternating-current charging pile automatically, control guiding index, charging flow is to mistake;Program-controlled it can adjust Load is saved, tests out whether charging pile has overcurrent protection function etc.;

As shown in figure 4, the auxiliary power circuit includes four filter circuits, it is respectively the first filter circuit, the second filter Wave circuit, the 3rd filter circuit, the 4th filter circuit;Voltage-stabiliser tube U3, display circuit and Wiring port J10;

Preferably, the voltage-stabiliser tube U3 uses the voltage-stablizer of model AZ1117D-3.3;It exports termination+5V voltages, defeated Outlet output+3.3V voltages;The output terminal of the voltage-stabiliser tube U3 is connected with 55 feet of the CPU processor U1;

Preferably, 1 foot of the Wiring port J10 connects+5V voltages;2 feet of the Wiring port J10 connect+12V voltages; 3 feet of the Wiring port J10 connect -12V voltages;The 4 feet ground connection of the Wiring port J10;

Preferably, the Wiring port J10 uses Wiring port of the specification for 3.96mm-4;

First filter circuit includes capacitance C52, C53, C57;A foot of the capacitance C52 and a foot of capacitance C53 It is in parallel with the cathode of capacitance C57 again after parallel connection, finally access 3 feet of voltage-stabiliser tube U3;3 feet of the voltage-stabiliser tube U3 and the wiring 1 foot of port J10 is connected;It is negative with capacitance C57 again after another foot of the capacitance C52 is in parallel with another foot of capacitance C53 It is extremely in parallel, finally access 1 foot of voltage-stabiliser tube U3;The 1 foot ground connection of the voltage-stabiliser tube U3;

Preferably, the capacitance of the capacitance C52 is 100nF;The capacitance of the capacitance C53 is 1000pF;The capacitance C57 Capacitance be 220uF, voltage 16V;

Second filter circuit includes capacitance C54, C55, C56, C58;A foot of the capacitance C54 distinguishes the C55 A foot, capacitance C56 cathode, capacitance C58 cathode parallel connection after access 2 feet of voltage-stabiliser tube U3;2 feet of the voltage-stabiliser tube U3 are defeated Go out 3.3V voltages;

Preferably, the capacitance of the capacitance C54 is 100nF;The capacitance of the capacitance C55 is 1000pF;The capacitance C56 Capacitance be 220uF, voltage 16V;The capacitance of the capacitance C58 is 4700uF, voltage 6.3V;

3rd filter circuit includes capacitance C63, C60, C65;A foot of the capacitance C63 and a foot of capacitance C60 It is in parallel with the anode of capacitance C65 again after parallel connection, finally access 3 feet of Wiring port J10;Another foot of the capacitance C63 and electricity It is in parallel with the cathode of capacitance C65 again after another foot parallel connection of appearance C60, finally it is grounded;

Preferably, the capacitance of the capacitance C63 is 100nF;The capacitance of the capacitance C60 is 1000pF;The capacitance C65 Capacitance be 330uF, voltage 25V;

4th filter circuit includes capacitance C61, C62, C64;A foot of the capacitance C61 and a foot of capacitance C62 It is in parallel with the cathode of capacitance C64 again after parallel connection, finally access 2 feet of Wiring port J10;Another foot of the capacitance C61 and electricity It is in parallel with the anode of capacitance C64 again after another foot parallel connection of appearance C62, finally it is grounded;

Preferably, the capacitance of the capacitance C61 is 100nF;The capacitance of the capacitance C62 is 1000pF;The capacitance C64 Capacitance be 330uF, voltage 25V;

The display circuit includes diode D11, resistance R68;The anode of the diode D11 and the 1 of Wiring port J10 Foot is connected;The cathode of the diode D11 is connected with a foot of the resistance R68, and another foot of the resistance R68 connects Ground;

Preferably, the diode D11 is light emitting diode;

Preferably, the resistance value of the resistance R68 is 510 Ω;

The auxiliary power circuit is used for realization the conversion of power supply, and+5V electricity is converted to 3.3V, to CPU processing systems and Power supply needed for the offer of other components;

As shown in figure 5, the power switch circuit includes switch S1/S2/S3/S4, resistance R201/R202/R203/ R204, capacitance C201/C202/C203/C204;

The input terminal of the switch S1 is connected with 15 feet of the CPU processor U1;The input terminal of the switch S2 with 16 feet of the CPU processor U1 are connected;The input terminal of the switch S3 is connected with 17 feet of the CPU processor U1; The input terminal of the switch S4 is connected with 18 feet of the CPU processor U1;

The foot access 3.3V voltages of the resistance R201;Another foot of the resistance R201 and the one of the capacitance C201 After foot parallel connection, then it is connected with the input terminal of the switch S1;Another foot ground connection of the capacitance C201;

The foot access 3.3V voltages of the resistance R202;Another foot of the resistance R202 and the one of the capacitance C202 After foot parallel connection, then it is connected with the input terminal of the switch S2;Another foot ground connection of the capacitance C202;

The foot access 3.3V voltages of the resistance R203;Another foot of the resistance R203 and the one of the capacitance C203 After foot parallel connection, then it is connected with the input terminal of the switch S3;Another foot ground connection of the capacitance C203;

The foot access 3.3V voltages of the resistance R204;Another foot of the resistance R204 and the one of the capacitance C204 After foot parallel connection, then it is connected with the input terminal of the switch S4;Another foot ground connection of the capacitance C204;

Preferably, the capacitance of the capacitance C201/C202/C203/C204 is 1000pF;

Preferably, the resistance value of the resistance R201/R202/R203/R204 is 10K Ω;

Whether the power switch circuit, press for detection switch, the different power supply of unicom;

Further, the circuit structure of the key circuit is identical with the circuit structure of the power switch circuit, so It is not repeated;

The key circuit can realize simulation car end CC and CP different conditions manually;Whether pressed for detection switch;

As shown in fig. 6, car end charging inlet circuit includes rectifier D501, optical coupler U501, resistance R502/ R503, capacitance C501;4 feet of the rectifier D501 connect high level;2 feet of the rectifier D501 connect low level;It is described whole 1 foot with the optical coupler U501, a foot of capacitance C501 are connected 3 feet of stream device D501 respectively;The optical coupler 1 foot of U501 is connected with a foot of the resistance R502;Another foot of the resistance R502 is another with the capacitance C501's After foot parallel connection, then it is connected with 1 foot of the rectifier D501;4 feet of the optical coupler U501 respectively with the resistance R503 A foot, 29 feet of the CPU processor U1 are connected;Another foot access+5V voltages of the resistance R503;The optical coupler The 3 feet ground connection of U501;

Preferably, the capacitance C501 is electrolytic capacitor, its capacitance is 40uF;

Preferably, the resistance value of the resistance R502/R503 is 1K Ω;

Preferably, the rectifier D501 uses the rectifier of model MB4S;

Whether car end charging inlet circuit, the output of electrical source of power is connected to for detecting car end, electrical source of power is believed Number being converted to Transistor-Transistor Logic level signal facilitates CPU to detect;

As shown in fig. 7, the CC detection circuits include amplifier U1A;Resistance R15/R16/R19/R20/R22/R23, electricity Hold C19/C20/C22/C23;

A foot access+12V voltages of the resistance R15;Another foot access CC1 signals of the resistance R15;The resistance Another foot of R15 is in parallel with a foot of the resistance R20;Another foot of the resistance R20 respectively with the resistance R22 one Foot, capacitance C23 a foot parallel connection after be connected with 3 feet of the amplifier U1A;Another foot of the resistance R22 and the electricity It is grounded after holding another foot parallel connection of C23;A foot access+12V voltages of the resistance R16;Another foot difference of the resistance R16 A foot, a foot of the capacitance C22 for 2 feet, the resistance R23 with the amplifier U1A is connected;The resistance R23's It is grounded after another foot is in parallel with another foot of the capacitance C22;

The 8 foot access+12V voltages of the amplifier U1A;The 4 feet ground connection of the amplifier U1A;The amplifier U1A's The foot with the resistance R19,65 feet of the CPU processor U1 are connected 1 foot respectively;Another foot of the resistance R19 connects Enter 3.3V voltages;

8 feet of amplifier U1A are accessed after a foot of the capacitance C19 is in parallel with a foot of capacitance C20;The capacitance C19 Another foot it is in parallel with another foot of capacitance C20 after be grounded;

Preferably, the amplifier U1A uses the amplifier of model LM2903D;

Preferably, the resistance value of the resistance R15 is 12K Ω;The resistance value of the resistance R20 is 300K Ω;The resistance R22 Resistance value be 100K Ω;The resistance value of the resistance R16 is 47K Ω;The resistance value of the resistance R23 is 10K Ω;The resistance R19 Resistance value be 3.3K Ω;

Preferably, the capacitance of the capacitance C23 is 1000pF;The capacitance of described capacitance C19, C22 are 100nF;The electricity The capacitance for holding C20 is 10uF, voltage 25V;

The CC detection circuits, for detecting CC signals;

As shown in figure 8, the programme control circut includes communication chip U6, capacitance C33/C34/C36/C37/C31/C32/C29/ C30;, Wiring port J5;

1 foot of the communication chip U6 is connected with a foot of the capacitance C34;Another foot of the capacitance C34 and institute 3 feet for stating communication chip U6 are connected;4 feet of the communication chip U6 are connected with a foot of the capacitance C37;The capacitance Another foot of C37 is connected with 35 feet of the communication chip U6;11 feet of the communication chip U6 and the CPU processor U1 25 feet be connected;12 feet of the communication chip U6 are connected with 26 feet of CPU processor U1;The 2 of the communication chip U6 Foot is connected with a foot of the capacitance C33;It is grounded after another foot of the capacitance C33 is in parallel with a foot of capacitance C36;It is described Another foot of capacitance C36 is connected with 6 feet of the communication chip U6;The 16 feet access 3.3V voltages of the communication chip U6; The 15 feet ground connection of the communication chip U6;14 feet of the communication chip U6 are connected with 2 feet of the Wiring port J5;It is described 13 feet of communication chip U6 are connected with 3 feet of the Wiring port J5;

Access+5V voltages after a foot of the capacitance C31 is in parallel with a foot of capacitance C32;Another foot of the capacitance C31 It is grounded after in parallel with another foot of capacitance C32;3.3V electricity is accessed after a foot of the capacitance C29 is in parallel with a foot of capacitance C30 Pressure;It is grounded after another foot of the capacitance C29 is in parallel with another foot of capacitance C30;

Preferably, the communication chip U6 uses the card reader of model ADM3202ARU-REEL;

Preferably, Wiring port J5 uses Wiring port of the specification for 2.5mm-8;

Preferably, the capacitance of capacitance C33/C34/C36/C37/C29/C32 is 100nF;

Preferably, the capacitance of capacitance C30 is 10uF, voltage 10V;The capacitance of capacitance C31 is 220uF, voltage 16V;

The programme control circut can simulate the different charge powers at car end;Serial line interface is carried out with the program-controlled load of ancillary equipment Interact to operate program-controlled load;

As shown in figure 9, the meter circuit includes ammeter chip U8, resistance R41/R42/R44;

1 foot of the ammeter chip U8 is connected with 48 feet of the CPU processor U1;2 feet of the ammeter chip U8, 3 feet are connected with 51 feet of the CPU processor U1;4 feet of the ammeter chip U8 and the 47 foot phases of the CPU processor U1 Connection;A foot of 1 foot of the ammeter chip U8 also with the resistance R42 is connected;Another foot access of the resistance R42 3.3V voltage;The 8 feet access 3.3V voltages of the ammeter chip U8;The 7 feet output METER1_485B letters of the ammeter chip U8 Number;The 6 feet output METER1_485A signals of the ammeter chip U8;6 feet, 7 feet of the ammeter chip U8 realize that RS485 leads to Letter;Also the foot with resistance R41, a foot of resistance R44 are connected 7 feet of the ammeter chip U8 respectively;The resistance R41's Another foot is connected with 6 feet of the ammeter chip U8;5 foot phases of another foot of the resistance R44 and the ammeter chip U8 Connection;The 5 feet ground connection of the ammeter chip U8;

Preferably, the ammeter chip U8 uses the ammeter chip of model SN65HVD72D;

Preferably, the resistance value of described resistance R42, R44 are 4.7K Ω;

Preferably, the resistance value of the resistance R41 is 120K Ω;

The meter circuit can provide data for metering and billing exactly, by serial line interface and ancillary equipment ammeter into Interaction go to operate ammeter;

As shown in Figure 10, the indicator light circuit includes resistance R205/R206/R207/R208, light emitting diode D202/ D203/D204/D205,;

The anode of the light emitting diode D202 is connected with 33 feet of the CPU processor U1;The light emitting diode The cathode of D202 is connected with a foot of the resistance R205;Another foot ground connection of the resistance R205;

The anode of the light emitting diode D203 is connected with 34 feet of the CPU processor U1;The light emitting diode The cathode of D203 is connected with a foot of the resistance R206;Another foot ground connection of the resistance R206;

The anode of the light emitting diode D204 is connected with 63 feet of the CPU processor U1;The light emitting diode The cathode of D204 is connected with a foot of the resistance R207;Another foot ground connection of the resistance R207;

The anode of the light emitting diode D205 is connected with 64 feet of the CPU processor U1;The light emitting diode The cathode of D205 is connected with a foot of the resistance R208;Another foot ground connection of the resistance R208;

Preferably, the resistance value of the resistance R205/R206/R207/R208 is 470 Ω;

The indicator light is used for instruction equipment and the state of charging;

As shown in figure 11, the LCD display includes resistance R50/R51, adjustable resistance RX1, capacitance C50, inductance B1/ B2/B3/B6/B7/B8/B9/B10/B11/B12/B13, display CN2, triode Q2;

1 foot of the adjustable resistance RX1 is connected with 15 feet, 17 feet of the display CN2;The display CN2's 15 feet, 17 feet access+5V voltages;The 2 feet ground connection of the adjustable resistance RX1;3 feet of the adjustable resistance RX1 are shown with described Show that 3 feet of device CN2 are connected;The 1 foot ground connection of the display CN2, and be connected with a foot of the capacitance C50;It is described aobvious Show the 2 foot access+5V voltages of device CN2, and be connected with another foot of the capacitance C50;

A foot of the inductance B1 is connected with 78 feet of the CPU processor U1;Another foot of the inductance B1 and institute 4 feet for stating display CN2 are connected;

A foot of the inductance B2 is connected with 79 feet of the CPU processor U1;Another foot of the inductance B2 and institute 5 feet for stating display CN2 are connected;

A foot of the inductance B3 is connected with 80 feet of the CPU processor U1;Another foot of the inductance B3 and institute 6 feet for stating display CN2 are connected;

A foot of the inductance B13 is connected with 81 feet of the CPU processor U1;Another foot of the inductance B13 with 7 feet of the display CN2 are connected;

A foot of the inductance B12 is connected with 82 feet of the CPU processor U1;Another foot of the inductance B12 with 8 feet of the display CN2 are connected;

A foot of the inductance B11 is connected with 83 feet of the CPU processor U1;Another foot of the inductance B11 with 9 feet of the display CN2 are connected;

A foot of the inductance B10 is connected with 84 feet of the CPU processor U1;Another foot of the inductance B10 with 10 feet of the display CN2 are connected;

A foot of the inductance B9 is connected with 85 feet of the CPU processor U1;Another foot of the inductance B9 and institute 11 feet for stating display CN2 are connected;

A foot of the inductance B8 is connected with 86 feet of the CPU processor U1;Another foot of the inductance B8 and institute 12 feet for stating display CN2 are connected;

A foot of the inductance B7 is connected with 87 feet of the CPU processor U1;Another foot of the inductance B7 and institute 13 feet for stating display CN2 are connected;

A foot of the inductance B6 is connected with 88 feet of the CPU processor U1;Another foot of the inductance B6 and institute 14 feet for stating display CN2 are connected;

A foot of the resistance R50 is connected with 6 feet of the display CN2;Another foot of the resistance R50 with it is described The base stage of triode Q2 is connected;The emitter of the triode Q2 19 feet with the display CN2, the resistance respectively A foot of R51 is connected;The 20 feet ground connection of the display CN2;Another foot ground connection of the resistance R51;

Preferably, the resistance value of the resistance R50 is 1K Ω;The resistance value of the resistance R51 is 100 Ω;

Preferably, the resistance value of the adjustable resistance RX1 is 10K Ω;

Preferably, the capacitance of the capacitance C50 is 0.1pF;

Preferably, the resistance value of the inductance B1/B2/B3/B6/B7/B8/B9/B10/B11/B12/B13 is 470 Ω;

Preferably, the triode Q2 is NPN type triode;

Preferably, the display CN2 uses the display of model WSM12864-2ZK;

The LCD display be used for show with charging pile interaction in charging voltage, electric current, CC states, the frequency of CP, Duty cycle, amplitude, and test result;

As shown in figure 12, the CP detection circuits include transistor D15/D16, inductance B4, resistance R2, controlling switch SW1;

A foot of the inductance B4 is connected with 56 feet of the CPU processor U1;Another foot difference of the inductance B4 1 foot, 2 feet with the transistor D15,3 feet of the transistor D16 are connected;3 feet of the transistor D15 respectively with institute State a foot of resistance R2,2 feet of controlling switch SW1 are connected;The 2 feet output CP+ signals of the controlling switch SW1;The electricity Another foot of resistance R2 is connected with 1 foot of the controlling switch SW1;1 foot, the 2 feet output CP- signals of the transistor D16;Institute State 3 feet, the 4 feet ground connection of controlling switch SW1;

Preferably, the transistor D15/D16 uses the transistor of model BAG70LTIG;

Preferably, the resistance value of the resistance R2 is 1.3K Ω;

Preferably, the resistance value of the inductance B4 is 470 Ω;

The CP detection circuits, for detecting CP signals, output CP+ signals, CP- signals;

As shown in figure 13, the PWM detection circuits include CP+ signal deteching circuits, CP- signal deteching circuits;

The CP+ signal deteching circuits include amplifier U3A, resistance R404/R405/R401, capacitance C109/C209;

A foot of the resistance R404 connects the CP+ signals exported in CP detection circuits, another foot of the resistance R404 with 3 feet after a foot parallel connection of the resistance R405 again with the amplifier U3A are connected;Another foot of the resistance R405 connects Ground;2 feet of the amplifier U3A are connected with 1 foot of the amplifier U3A;The 4 feet ground connection of the amplifier U3A;It is described to put The 8 foot access+12V voltages of big device U3A;A foot of the resistance R401 is connected with 1 foot of the amplifier U3A;It is described to put 1 foot of big device U3A is connected with 67 feet of the CPU processor U1;Another foot of the resistance R401 and the CPU processor 24 feet of U1 are connected;

Access+12V voltages after a foot of the capacitance C109 is in parallel with a foot of capacitance C209;The capacitance C109's is another It is grounded after one foot is in parallel with another foot of capacitance C209;

Preferably, the amplifier U3A uses the amplifier of model AS358M-E1;

Preferably, the resistance value of the resistance R404 is 70K Ω;The resistance value of the resistance R405 is 50K Ω;The resistance The resistance value of R401 is 1K Ω;

Preferably, the capacitance of capacitance C109 is 100nF;The capacitance of the capacitance C209 is 10uF, voltage 25V;

The CP- signal deteching circuits include amplifier U4A/U401A, resistance R410/R41/R407/R408;

A foot of the resistance R410 connects the CP- signals exported in CP detection circuits, another foot of the resistance R410 with 2 feet of the amplifier U401A are connected;2 feet of the amplifier U401A are connected with a foot of the resistance R41;It is described Another foot of resistance R41 is connected with 1 foot of the amplifier U401A;3 feet of the amplifier U401A, 4 feet ground connection;It is described The 8 foot access+12V voltages of amplifier U401A;A foot of the resistance R407 is connected with 1 foot of the amplifier U401A; Another foot of the resistance R407 is connected with 3 feet after a foot parallel connection of the resistance R408 again with the amplifier U4A;Institute State another foot ground connection of resistance R408;2 feet of the amplifier U4A are connected with 1 foot of the amplifier U4A;The amplification The 4 feet ground connection of device U4A;The 8 foot access+12V voltages of the amplifier U4A;1 foot of the amplifier U4A and the CPU processing 23 feet of device U1 are connected;

Preferably, described amplifier U401A, U4A use the amplifier of model AS358M-E1;

Preferably, the resistance value of described resistance R410, R407, R41 are 70K Ω;The resistance value of the resistance R408 is 50K Ω;

The PWM detection circuits, are used for realization to CP+, the detection of the frequency and duty cycle of CP-;

As shown in figure 14, specific workflow:Charging pile is linked with detection device (present invention) by the charging of national standard Line links together, this detection device detects the access of CC signals first, judges the maximum of cable and can bear electric current 1, then The dohandshake action of this detection device simulated automotive, until the output of CP signals, this detection device detects to charge guiding charging pile The duty when amplitude of stake CP signals, judges the maximum exportable electric current 2 of charging pile, and the presentation of information detected is being shown In display screen;According to the value of electric current 1 and electric current 2, judge the electric current 3 of minimum, then control program-controlled load loading, control its electric current It is slightly less than electric current;Also to be detected required for CP voltages change to the 6V moment to the big alternating current of load-receipt as 9V during this Time difference need completed within 3 seconds.It is normal processes above;

Except normal flow also needs to test abnormal flow;Particular content is as follows:

1), abnormal flow 1:During charging normal, CP is switched to 9V by this detection device by 6V, and charging pile needs It can stop rapidly exporting, the time needs to be limited within 1 second;

2), abnormal flow 2:Connect, after stopping output, PC is changed into 6V, charging pile energy by this detection device from 9V again It is enough it is continuous in time fill, be both needed to qualification so repeatedly 3 times;

3), abnormal flow 3:Overcurrent protection is tested, and in charging process, is slowly increased test electric current, bigger when increasing to When 1.1 times of rated current, charging pile can stop output within 10 seconds, and remove PWM waveform, be changed to+12V power supplies, This detection device is required to detect the process;Test is by that can be judged to charging pile interface testing and pass through above;

What the present invention to be illustrated have to might not realize according to flow above, can also be according to different clients demand Customization is changed accordingly;

The present invention has the following advantages:(1), by CC, the power of charge cable can be detected;(2) can be examined by CP The frequency of the PWM of charging pile, duty cycle, amplitude are surveyed, and gives display and judges result;(3), a duty of end PWM is detected Than control bearing power overloads, and examines the overcurrent protection function of charging pile;(4), the relevant resistance value of CP, test charging are changed Stake judges whether interval value meets national standard to CP values, and provides result;(5) voltage and current in charging process can be tested Value, it is for reference;(6), it can judge whether charging pile is capable of detecting when and handles with simulated automotive abnormal phenomenon;(7), protect It is multiple functional:Overvoltage protection, under-voltage protection, overcurrent protection, overheat protector, overcharges protection;Particularly possessed at charging interface Temperature protection, can eliminate safe hidden trouble;(8), system is automatic and manual test function;

The present invention is not limited to above-mentioned specific embodiment, those of ordinary skill in the art from above-mentioned design, Without performing creative labour, made a variety of conversion, are within the scope of the present invention.

Claims (9)

  1. A kind of 1. intelligent detection device of electric vehicle alternating-current charging pile, it is characterised in that:Shown including CPU processing systems, LCD Device, auxiliary power circuit, power switch circuit, key circuit, car end charging inlet circuit, CC detection circuits, CP detection circuits, Indicator light circuit, PWM detection circuits, programme control circut, meter circuit;Wherein, the CPU processing systems, for controlling completion to fill Electric current journey, and relevant signal acquisition and protection act;Can program-controlled adjusting load, test out whether charging pile has overcurrent Defencive function;The LCD display, for showing the signal message detected and test result;The auxiliary power circuit, is used The conversion of+3.3V is arrived in realization+5V, operating voltage is provided to CPU processing systems;The power switch circuit, is opened for detecting Whether pass presses, and connects different power supplys;Whether the key circuit, press for detection switch;Car end charging interface Whether circuit, the output of electrical source of power is connected to for detecting car end, and it is convenient that electrical source of power signal is converted to Transistor-Transistor Logic level signal CPU is detected;The CC detection circuits, for detecting CC signals;The CP detection circuits, for detecting CP signals;The instruction Circuit for lamp, for prompting to test whether to pass through;The PWM detection circuits, are used for realization and CP+, the frequency and duty cycle of CP- are examined Survey;The programme control circut, for loading the load of certain current value, analog charge automatically;The meter circuit, fills for detecting The voltage and current value of electric stake output;
    CPU processor U1 is equipped with the CPU processing systems;A resistance is connected with 37 feet of the CPU processor U1 R108;55 feet of the CPU processor U1 are connected with the auxiliary power circuit;15~18 feet of the CPU processor U1 It is connected respectively with the power switch circuit, key circuit;29 feet of the CPU processor U1 and car end charging interface Circuit is connected;65 feet of the CPU processor U1 are connected with the CC detection circuits;47 feet of the CPU processor U1, 48 feet, 51 feet are connected with the meter circuit;25~26 feet of the CPU processor U1 are connected with the programme control circut; 23~24 feet, 67 feet of the CPU processor U1 are connected with the PWM detection circuits;The 33 of the CPU processor U1~ 34 feet, 63~64 feet are connected with the indicator light circuit;56 feet of the CPU processor U1 and the CP detection circuits phase Connection;78~88 feet of the CPU processor U1 are connected with the LCD display.
  2. A kind of 2. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described Four switches are equipped with power switch circuit, respectively switch S1, switch S2, switch S3, switch S4;CPU processor U1's Under control, by this four switch S1, S2, S3, S4 break-makes, realize whether the inspection of unicom power supply;The power switch electricity Road is identical with the circuit structure of the key circuit.
  3. A kind of 3. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described Car end charging inlet circuit includes rectifier D501, optical coupler U501, resistance R502/R503, capacitance C501;In CPU processor It is real by rectifier D501, optical coupler U501 and surrounding resistance R502/R503, the collective effect of capacitance C501 under the control of U1 Whether existing car end is connected to the inspection of electrical source of power output;Meanwhile electrical source of power signal is converted into Transistor-Transistor Logic level signal and facilitates CPU Detection.
  4. A kind of 4. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described CC detection circuits include amplifier U1A, resistance R15/R16/R19/R20/R22/R23, capacitance C19/C20/C22/C23;In CPU Under the control of processor U1, pass through amplifier U1A and the resistance R15/R16/R19/R20/R22/R23 of surrounding, capacitance C19/ The common mating reaction of C20/C22/C23, realizes the inspection of CC signals.
  5. A kind of 5. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described Meter circuit includes ammeter chip U8, resistance R41/R42/R44;Under the control of CPU processor U1, by ammeter chip U8 weeks Under the mating reaction for enclosing load resistance R41/R42/R44, realization provides data for metering and billing exactly, by serial line interface and Ancillary equipment ammeter interacts to operation ammeter.
  6. A kind of 6. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described Indicator light circuit includes resistance R205/R206/R207/R208, light emitting diode D202/D203/D204/D205;In CPU processing Under the control of device U1, instruction equipment and the state of charging are realized by light emitting diode D202/D203/D204/D205.
  7. A kind of 7. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described LCD display includes resistance R50/R51, inductance B1/B2/B3/B6/B7/B8/B9/B10/B11/B12/B13, adjustable resistance RX1, capacitance C50, display CN2, triode Q2;Under the control of CPU processor U1, shown by display CN2 with charging Charging voltage in stake interaction, electric current, CC states, frequency, duty cycle, the amplitude of CP, and test result.
  8. A kind of 8. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described CP detection circuits include transistor D15/D16, inductance B4, resistance R2, controlling switch SW1;Under the control of CPU processor U1, By transistor D15/D16, the detection of CP signals is realized in the mating reaction of inductance B4, resistance R2, controlling switch SW1.
  9. A kind of 9. intelligent detection device of electric vehicle alternating-current charging pile according to claim 1, it is characterised in that:It is described PWM detection circuits include CP+ signal deteching circuits, CP- signal deteching circuits;
    The CP+ signal deteching circuits include amplifier U3A, resistance R404/R405/R401, capacitance C109/C209;The CP- Signal deteching circuit includes amplifier U4A/U401A, resistance R410/R41/R407/R408;By to CP+ signals, CP- signals Detection realize to CP+, the detection of the frequency and duty cycle of CP-.
CN201510843817.XA 2015-11-26 2015-11-26 A kind of intelligent detection device of electric vehicle alternating-current charging pile CN105375572B (en)

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CN105738741A (en) * 2016-04-05 2016-07-06 常胜 Alternating current charging pile function testing device
CN105759204B (en) * 2016-04-15 2018-11-30 上汽通用汽车有限公司 The diagnostic circuit and diagnostic method of automobile-used AC charging device
CN106769097A (en) * 2017-01-03 2017-05-31 重庆长安汽车股份有限公司 A kind of Electric Vehicle's Alternating conducts charge function detection means
CN107478912B (en) * 2017-09-29 2019-12-24 上海威迈斯电源有限公司 Anti-interference processing method for detecting CP (content provider) signals by vehicle-mounted charger
CN109672579A (en) * 2017-10-16 2019-04-23 蔚来汽车有限公司 Terminal device monitoring data acquisition strategies optimization method and device
CN108152644A (en) * 2017-11-27 2018-06-12 国网北京市电力公司 Test system
CN108445425A (en) * 2018-03-06 2018-08-24 安徽卓越动力科技有限公司 A kind of charging intelligent detection device
CN109975583A (en) * 2019-03-28 2019-07-05 浙江华云清洁能源有限公司 A kind of interface equipment for alternating-current charging pile test

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