CN117584788A - Bypass control circuit and equipment of alternating-current charging pile - Google Patents

Bypass control circuit and equipment of alternating-current charging pile Download PDF

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Publication number
CN117584788A
CN117584788A CN202311365392.7A CN202311365392A CN117584788A CN 117584788 A CN117584788 A CN 117584788A CN 202311365392 A CN202311365392 A CN 202311365392A CN 117584788 A CN117584788 A CN 117584788A
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CN
China
Prior art keywords
resistor
diode
operational amplifier
bypass
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311365392.7A
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Chinese (zh)
Inventor
万志群
王宜春
张玉喜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Skonda Electronic Co ltd
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Shenzhen Skonda Electronic Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Skonda Electronic Co ltd filed Critical Shenzhen Skonda Electronic Co ltd
Priority to CN202311365392.7A priority Critical patent/CN117584788A/en
Publication of CN117584788A publication Critical patent/CN117584788A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/56—Testing of electric apparatus
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application relates to the field of control of charging piles, in particular to a bypass control circuit and equipment of an alternating current charging pile, wherein the circuit comprises a voltage sampling module, an operation processing module and a bypass action module, the voltage sampling module is used for acquiring an input pile signal and an output pile signal, outputting a first direct current signal according to the input pile signal and outputting a second direct current signal according to the output pile signal; the operation processing module is used for outputting an action judgment direct current signal according to the first direct current signal and the second direct current signal; and the bypass action module is used for judging a direct current signal according to the action and controlling bypass conduction of the charging pile. The method has the beneficial effects that the capacity of the alternating-current charging pile is fully utilized, and the capacity waste caused by faults of the alternating-current charging pile is reduced.

Description

Bypass control circuit and equipment of alternating-current charging pile
Technical Field
The application relates to the field of charging pile control, in particular to a bypass control circuit and equipment of an alternating current charging pile.
Background
Along with the rapid development of new energy automobiles, the alternating current charging piles with high cost performance are widely applied, at present, a mode of connecting a plurality of alternating current charging piles in series is mainly adopted, and the alternating current charging piles connected in series are stopped and locked under the condition that the alternating current input fault of the follow-up alternating current charging pile is judged due to the power failure of a certain alternating current charging pile, so that the charging pile before the fault charging pile is disconnected without load, the follow-up alternating current charging pile is disconnected with the input alternating current for a long time, and the productivity is seriously influenced. Therefore, how to fully utilize the capacity of the ac charging pile and reduce the capacity wasted by the ac charging pile due to faults is a technical problem to be solved.
Disclosure of Invention
The purpose of the application is to make full use of the capacity of the alternating current charging pile and reduce the capacity wasted by the alternating current charging pile due to faults.
The technical aim of the application is achieved through the following technical scheme:
a bypass control circuit of an alternating current charging pile comprises a voltage sampling module, an operation processing module and a bypass action module;
the circuit is connected with an alternating current charging pile, the alternating current charging pile comprises a first circuit and a second circuit, and the first circuit and the second circuit comprise an input end and an output end; a first bypass is connected in parallel between the input end of the first circuit and the output end of the first circuit, and a second bypass is connected in parallel between the input end of the second circuit and the output end of the second circuit;
the voltage sampling module comprises an input sampling unit and an output sampling unit;
the input sampling unit is connected with the input end sampling point of the first circuit and the input end sampling point of the second circuit, and is used for acquiring an input pile signal and outputting a first direct current signal according to the input pile signal;
the output sampling unit is connected with the output end sampling point of the first circuit and the output end sampling point of the second circuit, and is used for acquiring an output pile signal and outputting a second direct current signal according to the output pile signal;
The operation processing module comprises an integration operation unit and a judgment control unit;
the integration operation unit is used for outputting a voltage difference signal according to the first direct current signal and the second direct current signal; the judging control unit is used for outputting an action judging direct current signal according to the voltage difference signal;
the bypass action module comprises a first bypass unit and a second bypass unit;
the first bypass unit is used for judging a direct current signal according to the action and conducting the first bypass;
the second bypass unit is used for judging a direct current signal according to the action and conducting the second bypass;
the input sampling unit and the output sampling unit comprise two input ends and one output end; the integrated operation unit comprises an input comparison end, an output comparison end and an output end, and the judgment control unit comprises an input end and an output end; the first bypass unit comprises an input end and an output end, and the second bypass unit comprises an input end and an output end;
one input end of the input sampling unit is connected with the input end of the first circuit, the other input end of the input sampling unit is connected with the input end of the second circuit, and the output end of the input sampling unit is connected with the input comparison end of the integration operation unit;
One input end of the output sampling unit is connected with the output end of the first circuit, the other input end of the output sampling unit is connected with the output end of the second circuit, and the output end of the output sampling unit is connected with the output comparison end of the integration operation unit;
the output end of the integration operation unit is connected with the input end of the judgment control unit, and the output end of the judgment control unit is connected with the input end of the first bypass unit and the input end of the second bypass unit;
the output end of the first bypass unit is used for conducting the first bypass; and the output end of the second bypass is used for conducting the second bypass.
By adopting the technical scheme, whether the sampled alternating current charging pile has faults or not is judged according to the signal sampling results at the two ends of the alternating current charging pile, and the sampled alternating current charging pile is subjected to short circuit treatment when the sampled alternating current charging pile has faults, so that the normal operation of other alternating current charging piles is not influenced, and the productivity is fully utilized.
Optionally, the bypass action module further comprises a fault alarm unit;
the fault alarm unit comprises a detection end and an alarm end, wherein the detection end is used for receiving the action judgment direct current signal, and the alarm end is used for sending alarm information according to the action judgment direct current signal.
Through adopting above-mentioned technical scheme, when the alternating current charging stake that samples had the trouble, send alarm information suggestion relevant personnel, the alternating current charging stake of the trouble is known and change to the relevant personnel of being convenient for.
Optionally, the input sampling unit includes a first rectifying component and a first voltage stabilizing component; the output sampling unit comprises a second rectifying component and a second voltage stabilizing component;
the first rectifying component comprises a first diode, a second diode, a third diode and a fourth diode;
the anode of the first diode is connected with the input end of the first circuit and the cathode of the third diode, the cathode of the first diode is connected with the cathode of the second diode, the anode of the second diode is connected with the cathode of the fourth diode, and the anode of the fourth diode is connected with the anode of the third diode and the ground;
the second rectifying component comprises a fifth diode, a sixth diode, a seventh diode and an eighth diode;
the anode of the fifth diode is connected with the input end of the second circuit and the cathode of the seventh diode, the cathode of the fifth diode is connected with the cathode of the sixth diode, the anode of the sixth diode is connected with the cathode of the eighth diode, and the anode of the eighth diode is connected with the anode of the seventh diode and the ground;
The first voltage stabilizing component comprises a first operational amplifier, a first resistor, a second resistor and a third resistor;
one end of the first resistor is connected with the cathode of the first diode and the cathode of the second diode, and the other end of the first resistor is connected with the non-inverting input end of the first operational amplifier; one end of the second resistor is connected with the positive electrode of the third diode and the positive electrode of the fourth diode, and the other end of the second resistor is connected with the inverting input end of the first operational amplifier; the junction of the second resistor and the inverting input end of the first operational amplifier is connected with one end of the third resistor, and the other end of the third resistor is connected with the output end of the first operational amplifier;
the second voltage stabilizing component comprises a second operational amplifier, a fourth resistor, a fifth resistor and a sixth resistor;
one end of the fourth resistor is connected with the cathode of the fifth diode and the cathode of the sixth diode, and the other end of the fourth resistor is connected with the non-inverting input end of the second operational amplifier; one end of the fifth resistor is connected with the positive electrode of the seventh diode and the positive electrode of the eighth diode, and the other end of the fifth resistor is connected with the inverting input end of the second operational amplifier; and the connection part of the fifth resistor and the inverting input end of the second operational amplifier is connected with one end of the sixth resistor, and the other end of the sixth resistor is connected with the output end of the second operational amplifier.
By adopting the technical scheme, the input sampling unit and the output sampling unit rectify the alternating current signals sampled by the units and then output a direct current signal through the operational amplifier voltage stabilization in the units.
Optionally, the first voltage stabilizing component further comprises a first capacitor and a seventh resistor, and the second voltage stabilizing component further comprises a second capacitor and an eighth resistor;
one end of the first capacitor is connected with the connection part of the second diode and the first resistor, and the other end of the first capacitor is connected with the connection part of the fourth diode and the second resistor;
one end of the second capacitor is connected with the connection part of the sixth diode and the fourth resistor, and the other end of the second capacitor is connected with the connection part of the eighth diode and the fifth resistor;
one end of the seventh resistor is connected with the connection part of the first resistor and the first operational amplifier, and the other end of the seventh resistor is grounded;
one end of the eighth resistor is connected with the connection part of the fourth resistor and the second operational amplifier, and the other end of the eighth resistor is grounded.
By adopting the technical scheme, the capacitors in the input sampling unit and the output sampling unit are grounded, so that interference signals in the circuit can be filtered, and the seventh resistor of the input sampling unit and the eighth resistor of the output sampling unit can enable the non-inverting input end of the corresponding operational amplifier to keep a low level when not sampled.
Optionally, the integrated operation unit includes a third operational amplifier, a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor;
one end of the ninth resistor is connected with the output end of the first operational amplifier, and the other end of the ninth resistor is connected with the non-inverting input end of the third operational amplifier;
the connection part of the ninth resistor and the third operational amplifier is connected with one end of the eleventh resistor, and the other end of the eleventh resistor is grounded;
one end of the tenth resistor is connected with the output end of the second operational amplifier, and the other end of the tenth resistor is connected with the inverting input end of the third operational amplifier;
and the connection part of the tenth resistor and the third operational amplifier is connected with one end of the twelfth resistor, and the other end of the twelfth resistor is connected with the output end of the third operational amplifier.
By adopting the technical scheme, a voltage difference signal is generated according to the difference value of the first direct current signal and the second direct current signal, so that the judging control unit can judge whether to control bypass conduction or not according to the generated voltage difference signal.
Optionally, the judgment control unit includes a fourth operational amplifier, a thirteenth resistor, a fourteenth resistor, and a fifteenth resistor;
The non-inverting input end of the fourth operational amplifier is connected with the output end of the third operational amplifier;
the inverting input end of the fourth operational amplifier is connected with one end of the thirteenth resistor, and the other end of the thirteenth resistor is connected with an external first direct current signal source;
the output end of the fourth operational amplifier is respectively connected with the input end of the first bypass unit and the input end of the second bypass unit;
one end of the fourteenth resistor is connected with the connection part of the thirteenth resistor and the fourth operational amplifier, and the other end of the fourteenth resistor is grounded;
one end of the fifteenth resistor is connected with an external second direct current signal source, and the other end of the fifteenth resistor is connected with the output end of the fourth operational amplifier.
By adopting the technical scheme, the fourth operational amplifier generates a judging result by comparing the voltage difference signal with the preset reference voltage, and controls each unit in the bypass action module to be conducted according to the judging result so as to carry out short circuit treatment on the sampled alternating current charging pile.
Optionally, the first bypass unit includes a first triode and a first driving interface, and the second bypass unit includes a second triode and a second driving interface;
The first driving interface is used for controlling a first relay on the first line, and the second driving interface is used for controlling a second relay on the second line;
the base electrode of the first triode is connected with the joint of the fourth operational amplifier and the fifteenth resistor, the collector electrode of the first triode is connected with one end of the first driving interface, and the emitter electrode of the first triode is grounded;
the other end of the first driving interface is connected with the second direct current signal source;
the base electrode of the second triode is connected with the joint of the fourth operational amplifier and the fifteenth resistor, the collector electrode of the second triode is connected with one end of the second driving interface, and the emitter electrode of the second triode is grounded;
the other end of the second driving interface is connected with the second direct current signal source.
By adopting the technical scheme, according to the control signal sent by the fourth operational amplifier, the first triode of the first bypass and the second triode in the second bypass are conducted, so that the first bypass and the second bypass are conducted, and the sampled alternating current charging pile can be subjected to short circuit treatment after the first bypass and the second bypass are conducted.
Optionally, the fault alarm unit includes a third triode, a light emitting diode and a sixteenth resistor;
the base electrode of the third triode is connected with the joint of the fourth operational amplifier and the fifteenth resistor, the collector electrode of the third triode is connected with the cathode of the light-emitting diode, and the emitter electrode of the third triode is grounded;
one end of the sixteenth resistor is connected with the second direct current signal source, and the other end of the sixteenth resistor is connected with the anode of the light emitting diode.
Through adopting above-mentioned technical scheme, according to the control signal of fourth operational amplifier output, can switch on the body diode of third triode to make luminous second grade light send the pilot lamp, be convenient for relevant personnel know corresponding alternating current charging stake trouble, thereby in time change.
Optionally, the switch is connected to the connection point between the input end sampling point of the first line and the input end sampling point of the second line and the ac charging pile.
Through adopting above-mentioned technical scheme, when the alternating current charging stake short circuit of sampling is handled, through the closing of control switch, can realize the online trouble of changing and fill the electric stake.
In another aspect of the present application, an apparatus is disclosed that includes a circuit configuration of a bypass control circuit of an ac charging stake as described above.
In summary, the present application includes at least one of the following beneficial effects:
1. and judging whether the sampled alternating current charging pile has faults according to the signal sampling results at the two ends of the alternating current charging pile, and carrying out short circuit treatment on the sampled alternating current charging pile when the sampled alternating current charging pile has faults, so that the normal operation of other alternating current charging piles is not influenced, and the productivity is fully utilized.
2. The fourth operational amplifier compares the voltage difference signal with a preset reference voltage to generate a judging result, and outputs a control signal according to the judging result, and the body diode of the third triode can be conducted according to the control signal output by the fourth operational amplifier, so that the light-emitting secondary light emits an indicator lamp, and related personnel can know the corresponding AC charging pile fault and replace the AC charging pile timely.
3. After the sampled alternating-current charging piles are subjected to short-circuit treatment, technicians can realize online replacement of the alternating-current charging piles with faults by turning off the switches corresponding to the alternating-current charging piles, and the operation of other alternating-current charging piles is not influenced.
Drawings
FIG. 1 is a system connection diagram of one embodiment of a bypass control circuit of an AC charging stake of the present application;
FIG. 2 is a block diagram of one embodiment of a bypass control circuit for an AC charging stake of the present application;
FIG. 3 is a circuit schematic of one embodiment of a bypass control circuit for an AC charging stake of the present application.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a system connection diagram of one embodiment of a bypass control circuit for an ac charging stake of the present application, including an ac power grid and an ac power source for supplying power, a feedback load for assisting in stable operation of the power grid, a plurality of ac charging stakes, and a plurality of bypass control circuits for the ac charging stake of the present application.
In this embodiment, a plurality of alternating-current charging piles are connected in series, namely charging pile 1 and charging pile 2 are … charging pile N are connected in series in sequence, the number of bypass control circuits of the alternating-current charging piles disclosed in the application corresponds to the number of alternating-current charging piles one by one, one bypass control current is connected in parallel to two ends of one charging pile, namely bypass control circuit 1 is connected in parallel to two ends of charging pile 1, and bypass control circuit 2 is connected in parallel to two ends … of charging pile 2 and two ends of charging pile N.
Each bypass control circuit obtains the input end voltage value and the output end voltage value of the parallel alternating-current charging piles through the connection mode, and determines whether the parallel alternating-current charging piles have faults or not according to the input end voltage value and the output end voltage value; if the bypass control circuit determines that the parallel alternating current charging pile has faults, the bypass control circuit conducts a circuit bypass at two ends of the parallel alternating current charging pile, so that an alternating current signal passing through the original charging pile is output to the next charging pile through the conducted bypass.
Specifically, taking a fault of the charging pile 2 as an example, the bypass control circuit 2 connected in parallel to two ends of the charging pile 2 will conduct the bypass at two ends of the charging pile 2 to perform a short-circuit treatment on the charging pile 2 according to the voltage value at the input end and the voltage value at the output end of the charging pile 2, and the ac signal originally passing through the charging pile 2 is changed into the bypass voltage of the charging pile 2 to be output to the next charging pile.
More specifically, the ac charging pile generally employs two lines for transmitting an ac signal, and the bypass control circuit needs to connect the sampling point on the first line of the input terminal and the sampling point on the second line of the input terminal at the same time when the voltage value of the input terminal is obtained, and similarly, the bypass control circuit needs to connect the sampling point on the first line of the output terminal and the sampling point on the second line of the input terminal at the same time when the voltage value of the output terminal is obtained.
Further, when the bypass control circuit conducts the bypass, the bypass control circuit also sends out alarm information to prompt related personnel to correspond to the fault of the charging pile, so that the fault charging pile can be replaced in time, and the replacement of the fault charging pile is specifically described as follows:
and the input end sampling point of the first circuit and the input end sampling point of the second circuit are connected with the switch at the joint of the alternating current charging pile.
Specifically, the switch may be an air switch or other switching devices, after the failed charging pile is short-circuited by the bypass control circuit, related personnel can maintain or replace the failed charging pile under the condition that normal operation of other charging piles is not affected after the switch of the failed charging pile is turned off, and after the failed charging pile is restored to a normal state, bypass control can still switch off the bypass of the charging pile by judging input and output voltages at two ends of the charging pile. Under the condition, the normal operation of the charging pile can be restored by restarting the switch.
The sampling, judging and controlling of the bypass control circuit of the alternating current charging pile are realized through hardware, the application is specifically described below with reference to fig. 2 in combination with a module connection diagram, fig. 2 is a module connection diagram of one embodiment of the bypass control circuit of the alternating current charging pile, and the circuit comprises a voltage sampling module 1, an operation processing module 2 and a bypass action module 3.
The voltage sampling module 1 comprises an input sampling unit 11 and an output sampling unit 12; the input sampling unit 11 and the output sampling unit 12 each comprise two inputs and one output.
The input sampling unit 11 is connected with the input sampling point of the first line and the input sampling point of the second line, and is used for obtaining an input pile signal and outputting a first direct current signal according to the input pile signal; one input end of the input sampling unit 11 is connected with the input end of the first circuit, the other input end is connected with the input end of the second circuit, and the output end of the input sampling unit 11 is connected with the input comparison end of the integration operation unit 21.
Regarding the input sampling unit 11: the input sampling unit 11 is configured to obtain an input ac signal of a corresponding ac charging pile, which is defined as a voltage sample 1 in the present embodiment. The input sampling unit 11 includes a rectifying component and a voltage stabilizing component, where the rectifying component may be a full-bridge rectifier formed by a plurality of diodes, and the voltage stabilizing component may be capable of converting an ac signal sampled by the input sampling unit 11 into a stable dc signal for output by means of clamping with a pull-up resistor and a pull-down resistor, filtering a signal, and the like.
The output sampling unit 12 is connected to the output end sampling point of the first line and the output end sampling point of the second line, and is configured to obtain an output pile signal, and output a second direct current signal according to the output pile signal; one input end of the output sampling unit 12 is connected to the output end of the first line, the other input end is connected to the output end of the second line, and the output end of the output sampling unit 12 is connected to the output comparison end of the integration operation unit 21.
Regarding the output sampling unit 12: the output sampling unit 12 is configured to obtain an output ac signal of the corresponding ac charging pile, which is defined as a voltage sample 2 in the present embodiment. The output sampling unit 12 is the same as the input sampling unit 11, and includes a rectifying component and a voltage stabilizing component, where the rectifying component may be a full-bridge rectifier formed by a plurality of diodes, and the voltage stabilizing component may be capable of converting the ac signal sampled by the output sampling unit 12 into a stable dc signal for output by means of pull-up and pull-down resistors, signal filtering, and the like.
The operation processing module 2 comprises an integration operation unit 21 and a judgment control unit 22;
the integrating operation unit 21 is configured to output a voltage difference signal according to the first dc signal and the second dc signal; the integrating operation unit 21 includes an input comparison terminal, an output comparison terminal, and an output terminal.
Regarding the integration operation unit 21: the integrating operation unit 21 includes an operational amplifier, whose non-inverting input terminal receives the stable dc signal output from the input sampling unit 11, whose inverting input terminal receives the stable dc signal output from the output sampling unit 12, and performs a difference operation on the two dc signals, so as to obtain a dc signal with a voltage difference, and output the dc signal to the judgment control unit 22 described below.
The judging control unit 22 is configured to output an action judging direct current signal according to the voltage difference signal; the judgment control unit 22 includes an input terminal and an output terminal.
Regarding the judgment control unit 22: the judging control unit 22 includes an operational amplifier, the inverting input terminal of which is provided with a reference voltage value for judging with the dc signal of the voltage difference result outputted from the integrating operation unit 21 received by the non-inverting input terminal, and if the dc signal of the voltage difference result is higher than a preset reference voltage value, in this case, the operational amplifier of the judging control unit 22 outputs a high level as a control signal for controlling the driving of each unit in the bypass operation module 3 described below.
The bypass action module 3 includes a first bypass unit 31 and a second bypass unit 32;
the first bypass unit 31 is configured to determine a dc signal according to the action, and conduct the first bypass, where the first bypass unit includes an input terminal and an output terminal.
Regarding the first bypass unit 31: the first bypass unit 31 includes a switching device and a driving interface, where the driving interface is used to control line switching of the first relay on the first line in the system of the ac charging stake; the switching device can be a triode, the collector and the emitter of the triode are conducted through the base electrode of the trigger triode, or an MOS tube is conducted through the grid electrode of the trigger MOS tube, and all the circuits which can achieve the purpose of conducting a circuit due to receiving a direct current signal and adopt the same invention conception are included in the protection scope of the application.
The second bypass unit 32 is configured to determine a dc signal according to the action, and turn on the second bypass, where the second bypass unit includes an input terminal and an output terminal.
Regarding the second bypass unit 32: the second bypass unit 32 is similar to the first bypass unit 31, and includes a switching device and a driving interface, where the driving interface is used for controlling line switching of the second relay on the second line in the system of the ac charging pile, and description of the switching device is the same as that of the switching device of the first bypass unit 31, and is not described herein.
Further, the bypass action module 3 further includes a fault alarm unit 33, where the fault alarm unit 33 includes a detection end and an alarm end, the detection end is configured to receive the action determination dc signal, and the alarm end is configured to send alarm information according to the action determination dc signal.
Regarding the failure alarm unit 33: the fault alarm unit 33 includes a switching device and an alarm device, where the alarm device may be a device capable of emitting information such as light and audio, for example, a light emitting diode, a buzzer, etc., and the switching device is used to control the line where the alarm device is located to be turned on, so as to achieve the function of controlling the operation of the alarm device.
Referring to fig. 3, fig. 3 is a schematic circuit diagram of an embodiment of a bypass control circuit of an ac charging pile disclosed further in the present application, and the circuit principle of the embodiment is specifically described below with reference to fig. 3:
the input sampling unit 11 comprises a first rectifying component and a first voltage stabilizing component; the output sampling unit 12 includes a second rectifying component and a second voltage stabilizing component;
the first rectifying component comprises a first diode D1, a second diode D2, a third diode D3 and a fourth diode D4; the positive pole of first diode D1 is connected the input of first circuit with the negative pole of third diode D3, the negative pole of first diode D1 is connected the negative pole of second diode D2, the positive pole of second diode D2 is connected the negative pole of fourth diode D4, the positive pole of fourth diode D4 is connected the positive pole of third diode D3 and earth.
Specifically, an ac signal sampled by an input terminal of a sampled ac charging pile (hereinafter referred to as a charging pile) needs to be rectified and converted into a dc signal before being input to a back-end circuit device, in this embodiment, samples D1, D2, D3 and D4 construct a full bridge rectification, and if a forward signal in the ac signal is output from D1 to a non-inverting input terminal of an operational amplifier U1, an inverted signal in the ac signal is output from D2 to a non-inverting input terminal of the operational amplifier U1, so that the ac signal is rectified into a dc signal with an equal voltage value and is input to the operational amplifier U1.
The second rectifying component comprises a fifth diode D5, a sixth diode D6, a seventh diode D7 and an eighth diode D8;
the positive electrode of the fifth diode D5 is connected with the input end of the second line and the negative electrode of the seventh diode D7, the negative electrode of the fifth diode D5 is connected with the negative electrode of the sixth diode D6, the positive electrode of the sixth diode D6 is connected with the negative electrode of the eighth diode D8, and the positive electrode of the eighth diode D8 is connected with the positive electrode of the seventh diode D7 and the ground electrode.
Specifically, the ac signal sampled by the output end of the charging pile also needs to be rectified and converted into an ac signal and then input into the circuit device at the rear end, in this embodiment, the samples D5, D6, D7 and D8 constitute a full bridge rectifier in the same way as the first rectifying component, and the sampled ac signal at the output end is converted into a dc signal by the same principle as the first rectifying component and then input into the non-inverting input end of the operational amplifier U2.
The first voltage stabilizing component comprises a first operational amplifier U1, a first resistor R1, a second resistor R2 and a third resistor R3;
one end of the first resistor R1 is connected with the cathode of the first diode D1 and the cathode of the second diode D2, and the other end of the first resistor R1 is connected with the non-inverting input end of the first operational amplifier U1; one end of the second resistor R2 is connected with the positive electrode of the third diode D3 and the positive electrode of the fourth diode D4, and the other end of the second resistor R2 is connected with the inverting input end of the first operational amplifier U1; the junction of the second resistor R2 and the inverting input terminal of the first operational amplifier U1 is connected to one end of the third resistor R3, and the other end of the third resistor R3 is connected to the output terminal of the first operational amplifier U1.
Specifically, the operational amplifier U1 is configured to integrate the dc signal formed after rectification by the first rectifying component, and integrate the dc signal into a logic level "1" or "0" according to an input result of the dc signal. The non-inverting input end of the operational amplifier U1 is used for receiving the integrated direct current signal, the inverting input end is connected with the resistor R2 and then grounded, a pull-down resistor is formed to clamp the inverting input end at a low level, the resistor R3 is connected with the inverting input end and the output end of the operational amplifier U1 to form a feedback circuit, the stability of the signal of the operational amplifier is maintained, and the resistor R1 plays a role in voltage division to prevent the direct current signal from being directly input into the operational amplifier U1 to damage devices.
More specifically, if the first rectifying component does not sample the input ac signal of the charging pile, in this case, no ac signal is integrated into a dc signal and output to the non-inverting input terminal of U1, forming a low level "0" at the non-inverting input terminal of U1, and a low level "0" at the inverting input terminal, and the U1 output is also a low level "0"; if the first rectifying component samples the input ac signal of the charging pile, the sampled input ac signal is integrated into a dc signal and output to the normal phase input end of U1, so as to form a logic level signal with the normal phase input end of U1 being high level "1", the reverse phase input end being low level "0", and the output being "1", the output of U1 may be commonly understood as the logic level value of the normal phase input end minus the logic level value of the reverse phase input end, and a logic level value of an operation result is output.
Further, the signal stability of the operational amplifier U1 can be further stabilized by adding a voltage stabilizing device, which is described in detail below:
comprising a first capacitor C1 and a seventh resistor R7;
one end of the first capacitor C1 is connected to a connection between the second diode D2 and the first resistor R1, and the other end of the first capacitor C1 is connected to a connection between the fourth diode D4 and the second resistor R2.
Specifically, the capacitor C1 is grounded to form a filter circuit, and in the dc signal formed by rectifying the first rectifying component, there may be an interference signal, and the interference signal is output to ground by means of the characteristic that the capacitor C1 is connected to ac and blocks dc, so as to increase the stability of the signal.
One end of the seventh resistor R7 is connected to the connection between the first resistor R1 and the first operational amplifier U1, and the other end of the seventh resistor R7 is grounded.
Specifically, the resistor R7 serves as a pull-down resistor, clamps the non-inverting input terminal of the operational amplifier U1 to a low level, and further maintains signal stability.
The second voltage stabilizing component comprises a second operational amplifier U2, a fourth resistor R4, a fifth resistor R5 and a sixth resistor R6;
one end of the fourth resistor R4 is connected to the cathode of the fifth diode D5 and the cathode of the sixth diode D6, and the other end is connected to the non-inverting input end of the second operational amplifier U2; one end of the fifth resistor R5 is connected with the positive electrode of the seventh diode D7 and the positive electrode of the eighth diode D8, and the other end of the fifth resistor R5 is connected with the inverting input end of the second operational amplifier U2; and the connection part of the fifth resistor R5 and the inverting input end of the second operational amplifier U2 is connected with one end of the sixth resistor R6, and the other end of the sixth resistor R6 is connected with the output end of the second operational amplifier U2.
Specifically, the non-inverting input end of the operational amplifier U2 receives the ac signal passing through the output end of the second rectifying component to rectify the ac signal, thereby forming a dc signal. The principle is the same as that of the first voltage stabilizing component, and in the second voltage stabilizing component, a resistor R4 is used for dividing the signal input into the non-inverting input end of the operational amplifier U2, so that the direct input is prevented from damaging U2; the resistor R5 is used as a pull-down resistor, and clamps the inverting input end of the U2 at a low level; the resistor R6 connects the inverting input terminal of the operational amplifier U2 with the output terminal to form a feedback circuit for maintaining the input/output stability of the signal.
More specifically, similar to the first voltage stabilizing component, if the second rectifying component does not sample the input ac signal of the charging pile, in this case, no ac signal is integrated into a dc signal and output to the positive input end of U2, so that the positive input end of U2 is low level "0", the negative input end is low level "0", and the logic level of the output of U2 is "0";
if the first rectifying component samples the input ac signal of the charging pile, the sampled input ac signal is integrated into a dc signal and output to the positive input terminal of U2, so as to form a logic level signal with the positive input terminal of U2 being high level "1", the negative input terminal being low level "0", and output being "1".
Further, the signal stability of the operational amplifier U2 can be further stabilized by adding a voltage stabilizing device, which is described in detail below:
including a second capacitor C2 and an eighth resistor R8;
one end of the second capacitor C2 is connected to a connection between the sixth diode D6 and the fourth resistor R4, and the other end of the second capacitor C2 is connected to a connection between the eighth diode D8 and the fifth resistor R5.
Specifically, the capacitor C2 is grounded to form a filter loop, and in the dc signal formed by rectification of the second rectifying component, there may be an interference signal, and the interference signal is output to ground by means of the characteristic that the capacitor C2 is connected to ac and blocks dc, so as to increase the stability of the signal.
One end of the eighth resistor R8 is connected to the connection between the fourth resistor R4 and the second operational amplifier U2, and the other end of the eighth resistor R8 is grounded.
Specifically, the resistor R8 serves as a pull-down resistor, clamping the non-inverting input terminal of the operational amplifier U2 to a low level, and further maintaining signal stability.
After the sampled signals are processed by the first voltage stabilizing component and the second voltage stabilizing component, two logic level signals are obtained, and the signals of the charging pile are determined according to the obtained two logic level signals, in this embodiment, an integration operation unit 21 is adopted for processing, and the following detailed description is given to the integration processing of the integration operation unit 21: the integrated operation unit 21 includes a third operational amplifier U3, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, and a twelfth resistor R12;
One end of the ninth resistor R9 is connected to the output end of the first operational amplifier U1, and the other end is connected to the non-inverting input end of the third operational amplifier U3.
Specifically, the resistor R9 is configured to divide the logic level signal output by the operational amplifier U1 and output the divided logic level signal to the non-inverting input terminal of the operational amplifier U3, so as to prevent the device from being damaged due to direct signal transmission.
And the connection part of the ninth resistor R9 and the third operational amplifier U3 is connected with one end of the eleventh resistor R11, and the other end of the eleventh resistor R11 is grounded.
Specifically, the resistor R11 serves as a pull-down resistor, clamping the non-inverting input terminal of U3 in a low state when no high level "1" output is present at the output terminal of the operational amplifier U1.
One end of the tenth resistor R10 is connected to the output end of the second operational amplifier U2, and the other end is connected to the inverting input end of the third operational amplifier U3.
Specifically, the resistor R10 is configured to divide the logic level signal output from the operational amplifier U2 and output the divided logic level signal to the inverting input terminal of the operational amplifier U3, so as to prevent the device from being damaged due to direct signal transmission.
More specifically, in conjunction with the above description that the operational amplifier U1 outputs to the non-inverting input terminal of the operational amplifier U3, the operational amplifier U3 performs operation determination according to the logic level signals received by the non-inverting input terminal and the inverting input terminal to generate an operation result, and outputs a level signal according to the operation result, for convenience of description, the logic level signal output by U1 is referred to as voltage sample 1, the logic level signal output by U2 is referred to as voltage 2, the level signal operated by U3 is referred to as output, and the following truth table is used for representation:
Voltage sample 1 Voltage sampling 2 Output of
0 0 0
1 1 0
1 0 1
As can be seen from the above table, the operational amplifier U3 outputs a voltage difference signal, i.e., a high level signal "1", for controlling the judgment control unit only when the logic level values of the voltage sample 1 and the voltage sample 2 are different.
The connection part of the tenth resistor R10 and the third operational amplifier U3 is connected with one end of the twelfth resistor R12, and the other end of the twelfth resistor R12 is connected with the output end of the third operational amplifier U3.
Specifically, the resistor R12 connects the inverting input terminal of U3 and the output terminal of U3 by the above connection, and constructs a feedback circuit to stabilize the input/output of U3.
The integrating operation unit 21 performs a difference operation on the two voltage samples, and outputs a voltage difference signal, and controls the bypass to be turned on or off according to the voltage difference signal, in this embodiment, a determination control unit 22 is used to perform a bypass control operation, and the determination control unit 22 is specifically described below:
the judgment control unit 22 includes a fourth operational amplifier U4, a thirteenth resistor R13, a fourteenth resistor R14, and a fifteenth resistor R15;
the non-inverting input end of the fourth operational amplifier U4 is connected with the output end of the third operational amplifier U3;
An inverting input end of the fourth operational amplifier U4 is connected to one end of the thirteenth resistor R13, and the other end of the thirteenth resistor R13 is connected to an external first dc signal source VCC1;
the output end of the fourth operational amplifier U4 is connected to the input end of the first bypass unit 31 and the input end of the second bypass unit 32, respectively;
one end of the fourteenth resistor R14 is connected to the connection between the thirteenth resistor R13 and the fourth operational amplifier U4, and the other end of the fourteenth resistor R14 is grounded.
One end of the fifteenth resistor R15 is connected to the external second dc signal source VCC2, and the other end is connected to the output end of the fourth operational amplifier U4.
Specifically, the non-inverting input terminal of the operational amplifier U4 obtains a voltage difference signal obtained by the operation of the integrating operation unit 21, compares the voltage difference signal with a reference voltage value preset at the inverting input terminal of U4, and outputs a high-level signal to the first bypass unit 31 and the second bypass unit 32 if the voltage value of the voltage difference signal is higher than the reference voltage value preset at the inverting input terminal of U4, so as to trigger the bypass to be turned on.
More specifically, the resistor R13 is configured to divide the direct current signal input by VCC1, and then make the voltage value of the inverting input terminal of U4 be at the reference voltage value, and adjust the magnitude of the reference voltage value by adjusting the resistance value of R13 and/or the input voltage value of VCC1; resistor R14 is a pull-down resistor; the resistor R15 is a pull-up resistor, and when the voltage of the non-inverting input terminal of U4 is higher than the voltage of the inverting input terminal of U4, a high level, i.e., an operation determination dc signal, is output through the pull-up resistor R15, and the turn-on of each unit in the bypass operation module 3 can be controlled according to the operation determination dc signal. The following describes the first bypass unit 31 in the operation determination dc signal controllable bypass operation module 3 in detail:
The first bypass unit 31 includes a first triode S1 and a first driving interface K1, and the second bypass unit includes a second triode S2 and a second driving interface K2;
the first driving interface K1 is used for controlling a first relay K11 on the first line, and the second driving interface K2 is used for controlling a second relay K12 on the second line;
the base electrode of the first triode S1 is connected to the connection part of the fourth operational amplifier U4 and the fifteenth resistor R15, the collector electrode of the first triode S1 is connected to one end of the first driving interface K1, and the emitter electrode of the first triode S1 is grounded;
the other end of the first driving interface K1 is connected to the second dc signal source VCC2.
Specifically, when the operational amplifier U4 transmits a high-level operation determination dc signal, the base of the transistor S1 receives the operation determination dc signal to turn on the body diode, and the dc signal output from the VCC2 is output to ground via the driving interface K1 and the body diode of the transistor S1. The driving interface K1 controls a connection mode of the relay K11 shown in fig. 1, and if the driving interface K1 is not turned on, the relay K11 adopts a connection mode that the contact a is connected with the contact b; if the driving interface K1 is turned on, the relay K11 adopts a connection mode in which the contact a is connected to the contact c.
The base electrode of the second triode S2 is connected to the connection part of the fourth operational amplifier U4 and the fifteenth resistor R15, the collector electrode of the second triode S2 is connected to one end of the second driving interface K2, and the emitter electrode of the second triode S2 is grounded;
the other end of the second driving interface K2 is connected to the second dc signal source VCC2.
Specifically, when the operational amplifier U4 transmits a high-level operation determination dc signal, the base of the transistor S2 receives the operation determination dc signal to turn on the body diode, and the dc signal output from the VCC2 is output to ground via the driving interface K2 and the body diode of the transistor S2. The driving interface K2 controls a connection mode of the relay K12 shown in fig. 1, and if the driving interface K2 is not turned on, the relay K12 adopts a connection mode that the contact d is connected with the contact e; if the driving interface K2 is turned on, the relay K12 adopts a connection mode in which the contact d is connected to the contact f.
More specifically, by simultaneously changing the connection contacts of the relay K11 and the relay K12, a signal bypass transmitted across the charging piles is formed, and the corresponding charging piles are short-circuited.
Further, the first bypass unit 31 and the second bypass unit 32 are conducted to construct a conducting bypass at two ends of the charging pile, short-circuit the charging pile, and the fault alarm unit 33 sends out corresponding prompt information, so as to inform related personnel of the fault condition of the alternating-current charging pile, and the principle of the fault alarm unit 33 in the embodiment is specifically described below:
The fault alarm unit comprises a third triode S3, a light emitting diode and a sixteenth resistor R16;
the base electrode of the third triode S3 is connected to the connection part of the fourth operational amplifier U4 and the fifteenth resistor R15, the collector electrode of the third triode S3 is connected to the negative electrode of the light emitting diode, and the emitter electrode of the third triode S3 is grounded;
one end of the sixteenth resistor R16 is connected to the second dc signal source, and the other end is connected to the positive electrode of the light emitting diode.
Specifically, when the operational amplifier U4 sends a high-level action determination direct current signal, the base of the triode S3 receives the action determination direct current signal to turn on the body diode, VCC2 sends out an indicator light through the resistor R16, the photodiode and the body diode of the triode S3 to the ground, so as to achieve the effect of fault alarm.
Further, after the ac charging pile gives a corresponding alarm when in fault, related personnel can determine a specific charging pile to be maintained or replaced according to the operation of the indicating device, in this embodiment, an on-line maintenance is realized by adopting a switch element, and the following specific explanation is given to the principle of the on-line maintenance:
And the input end sampling point of the first circuit and the input end sampling point of the second circuit are connected with the switch Q1 at the joint of the alternating current charging pile.
Specifically, after the failed charging pile is short-circuited by the above circuit and the principle thereof, if the charging pile is directly replaced for maintenance or the charging pile is replaced, the contact may cause a safety accident, and the switch Q1 may be any component with a control circuit for on-off, in this embodiment of the present application, the switch Q1 is an air switch. By setting the switch Q1, related personnel can turn off the switch Q1 when the charging pile alarms due to faults or other needs of daily maintenance and the like contact the charging pile, so that the electric signal is transmitted by the bypass of the corresponding charging pile, and the online replacement without stopping the operation of other alternating current charging piles is realized.
The embodiments of the present invention are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. A bypass control circuit of an alternating current charging pile is characterized in that: the circuit comprises a voltage sampling module, an operation processing module and a bypass action module;
The circuit is connected with an alternating current charging pile, the alternating current charging pile comprises a first circuit and a second circuit, and the first circuit and the second circuit comprise an input end and an output end; a first bypass is connected in parallel between the input end of the first circuit and the output end of the first circuit, and a second bypass is connected in parallel between the input end of the second circuit and the output end of the second circuit;
the voltage sampling module comprises an input sampling unit and an output sampling unit;
the input sampling unit is connected with the input end sampling point of the first circuit and the input end sampling point of the second circuit, and is used for acquiring an input pile signal and outputting a first direct current signal according to the input pile signal;
the output sampling unit is connected with the output end sampling point of the first circuit and the output end sampling point of the second circuit, and is used for acquiring an output pile signal and outputting a second direct current signal according to the output pile signal;
the operation processing module comprises an integration operation unit and a judgment control unit;
the integration operation unit is used for outputting a voltage difference signal according to the first direct current signal and the second direct current signal;
The judging control unit is used for outputting an action judging direct current signal according to the voltage difference signal;
the bypass action module comprises a first bypass unit and a second bypass unit;
the first bypass unit is used for judging a direct current signal according to the action and conducting the first bypass;
the second bypass unit is used for judging a direct current signal according to the action and conducting the second bypass;
the input sampling unit and the output sampling unit comprise two input ends and one output end; the integrated operation unit comprises an input comparison end, an output comparison end and an output end, and the judgment control unit comprises an input end and an output end; the first bypass unit comprises an input end and an output end, and the second bypass unit comprises an input end and an output end;
one input end of the input sampling unit is connected with the input end of the first circuit, the other input end of the input sampling unit is connected with the input end of the second circuit, and the output end of the input sampling unit is connected with the input comparison end of the integration operation unit;
one input end of the output sampling unit is connected with the output end of the first circuit, the other input end of the output sampling unit is connected with the output end of the second circuit, and the output end of the output sampling unit is connected with the output comparison end of the integration operation unit;
The output end of the integration operation unit is connected with the input end of the judgment control unit, and the output end of the judgment control unit is connected with the input end of the first bypass unit and the input end of the second bypass unit;
the output end of the first bypass unit is used for conducting the first bypass; and the output end of the second bypass is used for conducting the second bypass.
2. The bypass control circuit of an ac charging stake as recited in claim 1, wherein: the bypass action module further comprises a fault alarm unit;
the fault alarm unit comprises a detection end and an alarm end, wherein the detection end is used for receiving the action judgment direct current signal, and the alarm end is used for sending alarm information according to the action judgment direct current signal.
3. The bypass control circuit of an ac charging stake as recited in claim 2, wherein: the input sampling unit comprises a first rectifying component and a first voltage stabilizing component; the output sampling unit comprises a second rectifying component and a second voltage stabilizing component;
the first rectifying component comprises a first diode, a second diode, a third diode and a fourth diode;
the anode of the first diode is connected with the input end of the first circuit and the cathode of the third diode, the cathode of the first diode is connected with the cathode of the second diode, the anode of the second diode is connected with the cathode of the fourth diode, and the anode of the fourth diode is connected with the anode of the third diode and the ground;
The second rectifying component comprises a fifth diode, a sixth diode, a seventh diode and an eighth diode;
the anode of the fifth diode is connected with the input end of the second circuit and the cathode of the seventh diode, the cathode of the fifth diode is connected with the cathode of the sixth diode, the anode of the sixth diode is connected with the cathode of the eighth diode, and the anode of the eighth diode is connected with the anode of the seventh diode and the ground;
the first voltage stabilizing component comprises a first operational amplifier, a first resistor, a second resistor and a third resistor;
one end of the first resistor is connected with the cathode of the first diode and the cathode of the second diode, and the other end of the first resistor is connected with the non-inverting input end of the first operational amplifier; one end of the second resistor is connected with the positive electrode of the third diode and the positive electrode of the fourth diode, and the other end of the second resistor is connected with the inverting input end of the first operational amplifier; the junction of the second resistor and the inverting input end of the first operational amplifier is connected with one end of the third resistor, and the other end of the third resistor is connected with the output end of the first operational amplifier;
The second voltage stabilizing component comprises a second operational amplifier, a fourth resistor, a fifth resistor and a sixth resistor;
one end of the fourth resistor is connected with the cathode of the fifth diode and the cathode of the sixth diode, and the other end of the fourth resistor is connected with the non-inverting input end of the second operational amplifier; one end of the fifth resistor is connected with the positive electrode of the seventh diode and the positive electrode of the eighth diode, and the other end of the fifth resistor is connected with the inverting input end of the second operational amplifier; and the connection part of the fifth resistor and the inverting input end of the second operational amplifier is connected with one end of the sixth resistor, and the other end of the sixth resistor is connected with the output end of the second operational amplifier.
4. A bypass control circuit for an ac charging stake as claimed in claim 3, wherein: the first voltage stabilizing component further comprises a first capacitor and a seventh resistor, and the second voltage stabilizing component further comprises a second capacitor and an eighth resistor;
one end of the first capacitor is connected with the connection part of the second diode and the first resistor, and the other end of the first capacitor is connected with the connection part of the fourth diode and the second resistor;
One end of the second capacitor is connected with the connection part of the sixth diode and the fourth resistor, and the other end of the second capacitor is connected with the connection part of the eighth diode and the fifth resistor;
one end of the seventh resistor is connected with the connection part of the first resistor and the first operational amplifier, and the other end of the seventh resistor is grounded;
one end of the eighth resistor is connected with the connection part of the fourth resistor and the second operational amplifier, and the other end of the eighth resistor is grounded.
5. A bypass control circuit for an ac charging stake as claimed in claim 3, wherein: the integrated operation unit includes a third operational amplifier, a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor;
one end of the ninth resistor is connected with the output end of the first operational amplifier, and the other end of the ninth resistor is connected with the non-inverting input end of the third operational amplifier;
the connection part of the ninth resistor and the third operational amplifier is connected with one end of the eleventh resistor, and the other end of the eleventh resistor is grounded;
one end of the tenth resistor is connected with the output end of the second operational amplifier, and the other end of the tenth resistor is connected with the inverting input end of the third operational amplifier;
And the connection part of the tenth resistor and the third operational amplifier is connected with one end of the twelfth resistor, and the other end of the twelfth resistor is connected with the output end of the third operational amplifier.
6. The bypass control circuit of an ac charging stake as recited in claim 5, wherein: the judgment control unit includes a fourth operational amplifier, a thirteenth resistor, a fourteenth resistor, and a fifteenth resistor;
the non-inverting input end of the fourth operational amplifier is connected with the output end of the third operational amplifier;
the inverting input end of the fourth operational amplifier is connected with one end of the thirteenth resistor, and the other end of the thirteenth resistor is connected with an external first direct current signal source;
the output end of the fourth operational amplifier is respectively connected with the input end of the first bypass unit and the input end of the second bypass unit;
one end of the fourteenth resistor is connected with the connection part of the thirteenth resistor and the fourth operational amplifier, and the other end of the fourteenth resistor is grounded;
one end of the fifteenth resistor is connected with an external second direct current signal source, and the other end of the fifteenth resistor is connected with the output end of the fourth operational amplifier.
7. The bypass control circuit of an ac charging stake as recited in claim 6, wherein: the first bypass unit comprises a first triode and a first driving interface, and the second bypass unit comprises a second triode and a second driving interface;
the first driving interface is used for controlling a first relay on the first line, and the second driving interface is used for controlling a second relay on the second line;
the base electrode of the first triode is connected with the joint of the fourth operational amplifier and the fifteenth resistor, the collector electrode of the first triode is connected with one end of the first driving interface, and the emitter electrode of the first triode is grounded;
the other end of the first driving interface is connected with the second direct current signal source;
the base electrode of the second triode is connected with the joint of the fourth operational amplifier and the fifteenth resistor, the collector electrode of the second triode is connected with one end of the second driving interface, and the emitter electrode of the second triode is grounded;
the other end of the second driving interface is connected with the second direct current signal source.
8. The bypass control circuit of an ac charging stake as recited in claim 6, wherein: the fault alarm unit comprises a third triode, a light emitting diode and a sixteenth resistor;
The base electrode of the third triode is connected with the joint of the fourth operational amplifier and the fifteenth resistor, the collector electrode of the third triode is connected with the cathode of the light-emitting diode, and the emitter electrode of the third triode is grounded;
one end of the sixteenth resistor is connected with the second direct current signal source, and the other end of the sixteenth resistor is connected with the anode of the light emitting diode.
9. The bypass control circuit of an ac charging stake as recited in claim 1, wherein: and the input end sampling point of the first circuit and the input end sampling point of the second circuit are connected with the switch at the joint of the alternating current charging pile.
10. An apparatus comprising a circuit arrangement of the bypass control circuit of an ac charging pile according to any one of claims 1 to 9.
CN202311365392.7A 2023-10-19 2023-10-19 Bypass control circuit and equipment of alternating-current charging pile Pending CN117584788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311365392.7A CN117584788A (en) 2023-10-19 2023-10-19 Bypass control circuit and equipment of alternating-current charging pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311365392.7A CN117584788A (en) 2023-10-19 2023-10-19 Bypass control circuit and equipment of alternating-current charging pile

Publications (1)

Publication Number Publication Date
CN117584788A true CN117584788A (en) 2024-02-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311365392.7A Pending CN117584788A (en) 2023-10-19 2023-10-19 Bypass control circuit and equipment of alternating-current charging pile

Country Status (1)

Country Link
CN (1) CN117584788A (en)

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