CN218750378U - Fill electric pile voltage conversion circuit - Google Patents
Fill electric pile voltage conversion circuit Download PDFInfo
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- CN218750378U CN218750378U CN202222985542.1U CN202222985542U CN218750378U CN 218750378 U CN218750378 U CN 218750378U CN 202222985542 U CN202222985542 U CN 202222985542U CN 218750378 U CN218750378 U CN 218750378U
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Abstract
The utility model discloses a charging pile voltage conversion circuit, which relates to the technical field of voltage control, and comprises a charging and discharging control module, a comparison circuit and a charging and discharging control module, wherein the charging and discharging control module is used for storing and discharging electric energy through the comparison circuit; the intelligent control module is used for receiving signals and controlling the module to work; the protection module is used for overvoltage circuit breaking protection; the voltage conversion regulating module is used for DC-AC conversion and voltage regulation; and the output processing module is used for double boosting rectification and filtering processing. The utility model discloses fill electric pile voltage conversion circuit and realize carrying out DC-AC and AC-DC conversion processing to the electric energy of input respectively by voltage conversion adjusting module and output processing module simultaneously to the complementary power supply of the electric energy of filling electric pile and uninterrupted power supply control, avoid filling electric pile's undervoltage and outage, intelligent control module realizes the regulation processing to voltage through feedback voltage information to realize steady voltage output, carry out overvoltage detection and overvoltage protection by protection module simultaneously.
Description
Technical Field
The utility model relates to a voltage control technical field specifically is a fill electric pile voltage conversion circuit.
Background
Along with electric automobile's popularization, how fast, in time, safely, effectively, conveniently charge for electric automobile becomes the problem that the car owner faces, traditional electric pile that fills is not convenient for generally install because bulky, the current circuit structure who fills electric pile and adopt switching power supply chip is comparatively complicated, the troubleshooting degree of difficulty is great, and all can only carry out outage fault handling when voltage is unstable or the outage appears when supplying power, influence user's use and experience, and because overvoltage short circuit such as condition appears in equipment insulating material's ageing scheduling problem easily, bring unnecessary loss, consequently, remain to improve.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a fill electric pile voltage conversion circuit to solve the problem that proposes among the above-mentioned background art.
The embodiment of the utility model provides an in, a fill electric pile voltage conversion circuit is provided, should fill electric pile voltage conversion circuit includes: the device comprises a power supply module, an energy storage control module, a charge and discharge control module, an intelligent control module, a protection module, a voltage conversion and regulation module, an output processing module and an output sampling module;
the power supply module is used for carrying out voltage reduction filtering and rectification filtering processing on the input alternating current;
the energy storage control module is connected with the power supply module, is used for receiving the electric energy processed by the power supply module, performs charge and discharge control through a double-power tube circuit, and is used for storing and discharging energy through an energy storage circuit;
the charging and discharging control module is connected with the energy storage control module, is used for sampling the electric energy after the voltage reduction of the power supply module through the isolation detection circuit, controls the charging and discharging work of the energy storage control module through the comparison circuit, and is used for detecting the electric quantity information of the energy storage control module and controlling the charging work of the energy storage control module;
the intelligent control module is connected with the charge-discharge control module and the output sampling module and is used for receiving the electric quantity information detected by the charge-discharge control module and the signal output by the output sampling module and alternately outputting pulse signals so as to control the work of the voltage conversion regulating module;
the protection module is connected with the power supply module and used for controlling the electric energy transmission of the power supply module through the relay circuit when overvoltage occurs;
the voltage conversion regulating module is connected with the protection module and the intelligent control module and is used for receiving the pulse signal and controlling the DC-AC conversion and the voltage regulation of electric energy through a voltage conversion regulating circuit;
the output processing module is connected with the voltage conversion regulating module and is used for performing double boosting rectification and filtering processing on the electric energy output by the voltage conversion regulating module and outputting the electric energy;
the output sampling module is connected with the output processing module and the protection module and used for sampling voltage of the electric energy output by the output processing module and transmitting a sampling signal to the intelligent control module and the protection module.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses fill electric pile voltage conversion circuit energy storage control module and charge and discharge control module and realize complementary power supply of electric energy and the uninterrupted power supply control to filling electric pile, continuously provide the power supply electric energy of certain limit for filling electric pile, avoid filling electric pile appearance under-voltage and outage, simultaneously carry out DC-AC and AC-DC conversion to the electric energy of input respectively by voltage conversion adjusting module and output processing module and handle, intelligent control module realizes the regulation processing to voltage through output sampling module feedback voltage information, so as to realize steady voltage output, carry out overvoltage detection and overvoltage protection by protection module simultaneously, the electric energy after avoiding adjusting exceeds the voltage value of settlement, improve the security that fills electric pile voltage conversion circuit, the control mode of circuit is simple and easy and with low costs.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model discloses the example provides a fill electric pile voltage conversion circuit's principle square frame schematic diagram.
Fig. 2 is a circuit diagram of a charging pile voltage conversion circuit provided by the example of the utility model.
Fig. 3 is a connection circuit diagram of a protection module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In embodiment 1, referring to fig. 1, a charging pile voltage converting circuit includes: the device comprises a power module 1, an energy storage control module 2, a charge and discharge control module 3, an intelligent control module 4, a protection module 5, a voltage conversion regulation module 6, an output processing module 7 and an output sampling module 8;
specifically, the power module 1 is configured to perform voltage reduction filtering and rectification filtering processing on input alternating current;
the energy storage control module 2 is connected with the power supply module 1, is used for receiving the electric energy processed by the power supply module 1, performs charge and discharge control through a double-power tube circuit, and is used for storing and discharging energy through an energy storage circuit;
the charging and discharging control module 3 is connected with the energy storage control module 2, and is used for sampling the electric energy after the voltage reduction of the power supply module 1 through the isolation detection circuit, controlling the charging and discharging work of the energy storage control module 2 through the comparison circuit, detecting the electric quantity information of the energy storage control module 2 and controlling the charging work of the energy storage control module 2;
the intelligent control module 4 is connected with the charge and discharge control module 3 and the output sampling module 8, and is used for receiving the electric quantity information detected by the charge and discharge control module 3 and the signal output by the output sampling module 8 and alternately outputting a pulse signal so as to control the operation of the voltage conversion regulating module 6;
the protection module 5 is connected with the power module 1 and used for controlling electric energy transmission of the power module 1 through a relay circuit when overvoltage occurs;
the voltage conversion regulating module 6 is connected with the protection module 5 and the intelligent control module 4 and is used for receiving the pulse signal and controlling the DC-AC conversion and the voltage regulation of electric energy through a voltage conversion regulating circuit;
the output processing module 7 is connected with the voltage conversion regulating module 6 and is used for performing double boosting rectification and filtering processing on the electric energy output by the voltage conversion regulating module 6 and outputting the electric energy;
and the output sampling module 8 is connected with the output processing module 7 and the protection module 5 and used for sampling voltage of the electric energy output by the output processing module 7 and transmitting a sampling signal to the intelligent control module 4 and the protection module 5.
In a specific embodiment, the power module 1 may employ a voltage reduction circuit, a rectification circuit and a filter circuit to adjust the input electric energy; the energy storage control module 2 can adopt a double-power tube circuit to realize the charge and discharge control of the energy storage device; the charge and discharge control module 3 can adopt an isolation detection circuit to detect the condition of the input electric energy and judge whether the input electric energy meets the requirement through a comparison circuit so as to control the work of the energy storage control module 2 through a triode circuit; the intelligent control module 4 comprises a micro-processing circuit and a driving circuit, wherein the micro-processing circuit can adopt but is not limited to microcontrollers such as a single chip microcomputer and a DSP, so as to realize the receiving calculation of signals and the adjustment of voltage, and the driving circuit is used for improving the driving capability of pulse signals output by the micro-processing circuit so as to control the on/off of the power tube, which is not described herein; the protection module 5 can adopt an overvoltage comparison circuit to judge the state of output electric energy and control a relay circuit to cut off the input electric energy; the voltage conversion regulating module 6 can adopt a voltage conversion regulating circuit to carry out DC-AC regulation and conversion treatment; the output processing module 7 can adopt a double rectification circuit and a filter circuit to carry out boosting rectification and filtering processing; the output sampling module 8 may adopt a resistance voltage-dividing circuit to perform voltage sampling.
specifically, the ac source is connected to a primary winding of the first transformer W1, a first end of a secondary winding of the first transformer W1 is connected to one end of the first capacitor C1 and a first end of the first rectifier T1 through the first inductor L1, a second end of the secondary winding of the first transformer W1 is connected to a third end of the first rectifier T1 and is connected to the ground end and the other end of the first capacitor C1 through the second capacitor C2, a fourth end of the first rectifier T1 is connected to the ground end and one end of the fourth capacitor C4 through the third capacitor C3, and a second end of the first rectifier T1 is connected to the other end of the fourth capacitor C4.
Further, the energy storage control module 2 comprises a discharge tube G1, a charge tube G2 and an energy storage device;
specifically, the source electrode of the discharge tube G1 is connected to the fourth end of the first rectifier T1, the drain electrode of the discharge tube G1 is connected to the drain electrode of the charge tube G2, the source electrode of the charge tube G2 is connected to the first end of the energy storage device, the second end of the energy storage device is connected to the second end of the first rectifier T1, and the gate electrode of the charge tube G2 and the gate electrode of the discharge tube G1 are connected to the charge and discharge control module 3.
In a specific embodiment, the discharge tube G1 and the charging tube G2 may both be N-channel enhancement MOS tubes for controlling charging and discharging operations of the energy storage device; the energy storage device can be selected from, but is not limited to, lithium batteries, storage batteries and other energy storage devices.
Further, the charge and discharge control module 3 includes a fourth resistor R4, a third resistor R3, a first power source VCC1, a first optocoupler U1, a fifth resistor R5, a first comparator A1, a sixth resistor R6, a second power source VCC2, a discharge threshold, a first switching tube VT1, a seventh resistor R7, and a third power source VCC3;
specifically, the first end of first opto-coupler U1 passes through fourth resistance R4 and connects first rectifier T1's first end, first opto-coupler U1's second end ground connection, first opto-coupler U1's third end passes through third resistance R3 and connects first power VCC1, first opto-coupler U1's fourth end is connected first comparator A1's inverting terminal and is passed through fifth resistance R5 ground connection, discharge threshold is connected to first comparator A1's homophase end, first comparator A1's output is connected first switch tube VT 1's base and is discharged pipe G1's grid and connect second power VCC2 through sixth resistance R6, first switch tube VT 1's collecting electrode is connected charge tube G2's grid and connect third power VCC3 through seventh resistance R7, first switch tube VT 1's projecting pole ground connection.
Further, the charge and discharge control module 3 further includes an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a third diode D3, and a second switching tube VT2;
specifically, one end of the eighth resistor R8 is connected to the first end of the energy storage device, the other end of the eighth resistor R8 is connected to one end of the tenth resistor R10 and is connected to the second end of the energy storage device through the ninth resistor R9, the other end of the tenth resistor R10 is connected to the cathode of the third diode D3 and the intelligent control module 4, the anode of the third diode D3 is connected to the base of the second switching tube VT2, and the collector and the emitter of the second switching tube VT2 are connected to the collector and the ground of the first switching tube VT1, respectively.
In a specific embodiment, the first optocoupler U1 may be a PC817 optocoupler, and cooperates with a first power VCC1, a third resistor R3, and a fifth resistor R5 to form a sampling circuit for detecting input electric energy; the first comparator A1 can be an LM393 comparator for judging whether the energy storage device needs to discharge or not; the first switching tube VT1 may be an NPN transistor, and is configured to control a working state of the charging tube G2; the eighth resistor R8 and the ninth resistor R9 form a resistor voltage division circuit for detecting the electric quantity of the energy storage device; the tenth resistor R10 and the third diode D3 are used for judging whether the energy storage device is fully charged and controlling the second switching tube VT2 to work; the second switching tube VT2 may be an NPN transistor, and is configured to control the operation of the charging tube G2.
Further, the protection module 5 comprises a first relay switch K1-1; the voltage conversion adjusting module 6 comprises a first power tube Q1, a second power tube Q2, a second inductor L2, a fifth capacitor C5, a third inductor L3, a sixth capacitor C6 and a second transformer W2;
specifically, one end of the first relay switch K1-1 is connected to the fourth end of the first rectifier T1, the other end of the first relay switch K1-1 is connected to the second end of the primary winding of the second transformer W2, the first end of the primary winding of the second transformer W2 is connected to one end of the fifth capacitor C5 and is connected to the emitter of the first power tube Q1 through the second inductor L2, the collector of the first power tube Q1 is connected to the second end of the first rectifier T1 and the collector of the second power tube Q2, the emitter of the second power tube Q2 is connected to one end of the sixth capacitor C6 and the third end of the primary winding of the second transformer W2 through the third inductor L3, the other end of the sixth capacitor C6 is connected to the other end of the fifth capacitor C5 and the ground, the gate of the first power tube Q1 and the gate of the second power tube Q2 are connected to the intelligent control module 4, and the secondary winding of the second transformer W2 is connected to the output processing module 7.
In a specific embodiment, the first relay switch K1-1 is a normally closed switch; the first power tube Q1 and the second power tube Q2 can both adopt IGBTs, and the voltage regulation and the voltage conversion are realized through the control of pulse signals alternately output by the intelligent control module 4; the second inductor L2 and the fifth capacitor C5 are used for filtering the pulse waveform of a power tube into gentle positive half-cycle sine wave voltage; the third inductor L3 and the sixth capacitor C6 are used for filtering the pulse waveform of the second power tube Q2 into a gentle negative half-cycle sine wave voltage; the second transformer W2 may be a high-frequency transformer, and the specific type is not limited.
Further, the output processing module 7 includes a seventh capacitor C7, a first diode D1, a second diode D2, an eighth capacitor C8, a ninth capacitor C9, and an output port; the output sampling module 8 comprises a first resistor R1 and a second resistor C2;
specifically, the anode of the first diode D1, one end of the eighth capacitor C8, one end of the ninth capacitor C9, the first end of the first resistor R1, and the output port are all connected to the first end of the secondary winding of the second transformer W2, the cathode of the first diode D1 is connected to the anode of the second diode D2 and connected to the second end of the secondary winding of the second transformer W2 through the seventh capacitor C7, the cathode of the second diode D2 is connected to the other end of the eighth capacitor C8, the other end of the ninth capacitor C9, and the ground, and the second end of the first resistor R1 is connected to the intelligent control module 4 and grounded through the second resistor C2.
In an embodiment, the seventh capacitor C7, the first diode D1, the second diode D2, and the eighth capacitor C8 form a double rectification circuit; the ninth capacitor C9 is used for filtering.
Further, the protection module 5 further includes a second comparator A2, an overvoltage threshold, a fourth diode D4, an eleventh resistor R11, a fourth power supply VCC4, a fifth diode D5, a fifth power supply VCC5, a third switching tube VT3, an alarm device, and a first relay K1;
specifically, the in-phase end of the second comparator A2 is connected to the second end of the first resistor R1 and the cathode of the fourth diode D4, the inverting end of the second comparator A2 is connected to the overvoltage threshold, the output end of the second comparator A2 is connected to the base of the third switching tube VT3 and the anode of the fourth diode D4 and is connected to the fourth power VCC4 through the eleventh resistor R11, the emitter of the third switching tube VT3 is grounded, the collector of the third switching tube VT3 is connected to the anode of the fifth diode D5, one end of the first relay K1 and one end of the alarm device, and the other end of the alarm device, the other end of the first relay K1 and the cathode of the fifth diode D5 are all connected to the fifth power VCC5.
In a specific embodiment, the second comparator A2 may be an LM393 comparator, and forms an output latch in cooperation with the fourth diode D4; the third switching tube VT3 can select an LM393 comparator to control the work of the first relay K1 and the alarm device; the first relay K1 is used for controlling the first relay switch K1-1 to be closed or opened.
The utility model relates to a charging pile voltage conversion circuit, through exchanging the source through first transformer W1 step-down, first inductance L1, first electric capacity C1 and second electric capacity C2 carry out filtering processing, again by first rectifier T1, third electric capacity C3 and fourth electric capacity C4 carry out rectification and positive and negative value filtering processing, first opto-coupler U1 detects the state of exchanging the source output electric energy, and sample by third resistance R3 and fifth resistance R5, the sampling signal is compared with the discharge threshold value through first comparator A1, when the signal of sampling is less than the discharge threshold value, first comparator A1 will control discharge tube G1 to work, simultaneously by first switch tube VT1 control charging tube G2 end, energy storage device carries out complementary power supply and outage power supply with the electric energy after the rectification at this moment, and transmit for first power tube Q1 and second power tube Q2 by first relay switch K1-1, when the signal of sampling is higher than the discharge threshold value, the discharge tube G1 and the first switch tube VT1 are cut off, the charging tube G2 is conducted, the energy storage device stores energy, when the electric quantity value of the energy storage device is full, the third diode D3 is broken down, the second switch tube VT2 is conducted, the charging tube G2 is cut off, the charging is stopped, the intelligent control module 4 adjusts the duty ratio of the output pulse signal through the voltage signal fed back by the first resistor R1 and the second resistor C2, and alternately controls the first power tube Q1 and the second power tube Q2 to be cut off, so that the conversion from direct current to alternating current and the adjustment of voltage are realized, then the AC-AC adjustment is carried out by the second transformer W2, the output processing module 7 carries out double boosting and rectification filtering output, when the signal sampled by the first resistor R1 and the second resistor C2 exceeds the set overvoltage threshold value, the second comparator A2 controls the third switch tube VT3 to be conducted, so that the alarm device gives an alarm, the first relay K1 controls the first relay K1-1 to be cut off, realize the power supply protection to filling electric pile.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A charging pile voltage conversion circuit is characterized in that,
should fill electric pile voltage conversion circuit includes: the device comprises a power supply module, an energy storage control module, a charge and discharge control module, an intelligent control module, a protection module, a voltage conversion and regulation module, an output processing module and an output sampling module;
the power supply module is used for carrying out voltage reduction filtering and rectification filtering processing on the input alternating current;
the energy storage control module is connected with the power supply module, is used for receiving the electric energy processed by the power supply module, performs charge and discharge control through a double-power tube circuit, and is used for storing and discharging energy through an energy storage circuit;
the charging and discharging control module is connected with the energy storage control module, is used for sampling the electric energy after the voltage reduction of the power supply module through the isolation detection circuit, controls the charging and discharging work of the energy storage control module through the comparison circuit, and is used for detecting the electric quantity information of the energy storage control module and controlling the charging work of the energy storage control module;
the intelligent control module is connected with the charge-discharge control module and the output sampling module and is used for receiving the electric quantity information detected by the charge-discharge control module and the signal output by the output sampling module and alternately outputting pulse signals so as to control the work of the voltage conversion regulating module;
the protection module is connected with the power supply module and used for controlling the electric energy transmission of the power supply module through the relay circuit when overvoltage occurs;
the voltage conversion regulating module is connected with the protection module and the intelligent control module and is used for receiving the pulse signal and controlling the DC-AC conversion and the voltage regulation of electric energy through a voltage conversion regulating circuit;
the output processing module is connected with the voltage conversion regulating module and is used for performing double boosting rectification and filtering processing on the electric energy output by the voltage conversion regulating module and outputting the electric energy;
the output sampling module is connected with the output processing module and the protection module and used for sampling voltage of the electric energy output by the output processing module and transmitting a sampling signal to the intelligent control module and the protection module.
2. The charging pile voltage conversion circuit of claim 1, wherein the power module comprises an alternating current source, a first transformer, a first inductor, a first capacitor, a second capacitor, a first rectifier, a third capacitor, and a fourth capacitor;
the alternating current source is connected with a primary winding of the first transformer, a first end of a secondary winding of the first transformer is connected with one end of the first capacitor and a first end of the first rectifier through the first inductor, a second end of the secondary winding of the first transformer is connected with a third end of the first rectifier and is connected with the ground end and the other end of the first capacitor through the second capacitor, a fourth end of the first rectifier is connected with the ground end and one end of the fourth capacitor through the third capacitor, and a second end of the first rectifier is connected with the other end of the fourth capacitor.
3. The charging post voltage conversion circuit of claim 2, wherein the energy storage control module comprises a discharge tube, a charging tube and an energy storage device;
the source electrode of the discharge tube is connected with the fourth end of the first rectifier, the drain electrode of the discharge tube is connected with the drain electrode of the charge tube, the source electrode of the charge tube is connected with the first end of the energy storage device, the second end of the energy storage device is connected with the second end of the first rectifier, and the grid electrode of the charge tube and the grid electrode of the discharge tube are connected with the charge and discharge control module.
4. The charging pile voltage conversion circuit according to claim 3, wherein the charging and discharging control module comprises a fourth resistor, a third resistor, a first power supply, a first optocoupler, a fifth resistor, a first comparator, a sixth resistor, a second power supply, a discharging threshold, a first switching tube, a seventh resistor and a third power supply;
the first end of the first optical coupler is connected with the first end of the first rectifier through a fourth resistor, the second end of the first optical coupler is grounded, the third end of the first optical coupler is connected with a first power supply through a third resistor, the fourth end of the first optical coupler is connected with the inverting terminal of the first comparator and is grounded through a fifth resistor, the non-inverting terminal of the first comparator is connected with a discharge threshold, the output end of the first comparator is connected with the base of the first switch tube and the grid of the discharge tube and is connected with the second power supply through a sixth resistor, the collector electrode of the first switch tube is connected with the grid of the charge tube and is connected with the third power supply through a seventh resistor, and the emitter of the first switch tube is grounded.
5. The charging pile voltage conversion circuit according to claim 4, wherein the charging and discharging control module further comprises an eighth resistor, a ninth resistor, a tenth resistor, a third diode and a second switch tube;
one end of the eighth resistor is connected with the first end of the energy storage device, the other end of the eighth resistor is connected with one end of the tenth resistor and is connected with the second end of the energy storage device through the ninth resistor, the other end of the tenth resistor is connected with the cathode of the third diode and the intelligent control module, the anode of the third diode is connected with the base of the second switch tube, and the collector and the emitter of the second switch tube are respectively connected with the collector and the ground of the first switch tube.
6. The charging pile voltage conversion circuit of claim 2, wherein the protection module comprises a first relay switch; the voltage conversion regulating module comprises a first power tube, a second inductor, a fifth capacitor, a third inductor, a sixth capacitor and a second transformer;
one end of the first relay switch is connected with the fourth end of the first rectifier, the other end of the first relay switch is connected with the second end of the primary winding of the second transformer, the first end of the primary winding of the second transformer is connected with one end of the fifth capacitor and is connected with the emitting electrode of the first power tube through the second inductor, the collecting electrode of the first power tube is connected with the second end of the first rectifier and the collecting electrode of the second power tube, the emitting electrode of the second power tube is connected with one end of the sixth capacitor and the third end of the primary winding of the second transformer through the third inductor, the other end of the sixth capacitor is connected with the other end of the fifth capacitor and the ground end, the grid electrode of the first power tube and the grid electrode of the second power tube are connected with the intelligent control module, and the secondary winding of the second transformer is connected with the output processing module.
7. The charging pile voltage conversion circuit according to claim 6, wherein the output processing module comprises a seventh capacitor, a first diode, a second diode, an eighth capacitor, a ninth capacitor and an output port; the output sampling module comprises a first resistor and a second resistor;
the anode of the first diode, one end of the eighth capacitor, one end of the ninth capacitor, the first end of the first resistor and the output port are all connected with the first end of the secondary winding of the second transformer, the cathode of the first diode is connected with the anode of the second diode and is connected with the second end of the secondary winding of the second transformer through the seventh capacitor, the cathode of the second diode is connected with the other end of the eighth capacitor, the other end of the ninth capacitor and the ground end, and the second end of the first resistor is connected with the intelligent control module and is grounded through the second resistor.
8. The charging pile voltage conversion circuit according to claim 7, wherein the protection module further comprises a second comparator, an overvoltage threshold, a fourth diode, an eleventh resistor, a fourth power supply, a fifth diode, a fifth power supply, a third switching tube, an alarm device and a first relay;
the in-phase end of the second comparator is connected with the second end of the first resistor and the cathode of the fourth diode, the inverting end of the second comparator is connected with an overvoltage threshold, the output end of the second comparator is connected with the base of the third switching tube and the anode of the fourth diode and is connected with the fourth power supply through the eleventh resistor, the emitter of the third switching tube is grounded, the collector of the third switching tube is connected with the anode of the fifth diode, one end of the first relay and one end of the alarm device, and the other end of the alarm device, the other end of the first relay and the cathode of the fifth diode are all connected with the fifth power supply.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222985542.1U CN218750378U (en) | 2022-11-10 | 2022-11-10 | Fill electric pile voltage conversion circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222985542.1U CN218750378U (en) | 2022-11-10 | 2022-11-10 | Fill electric pile voltage conversion circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117081218A (en) * | 2023-10-16 | 2023-11-17 | 南方电网数字电网研究院有限公司 | Charging pile with automatic charging mode switching function |
| CN117277525A (en) * | 2023-09-26 | 2023-12-22 | 吉林省艾特网络传媒有限公司 | Intelligent power control system for charging pile |
-
2022
- 2022-11-10 CN CN202222985542.1U patent/CN218750378U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117277525A (en) * | 2023-09-26 | 2023-12-22 | 吉林省艾特网络传媒有限公司 | Intelligent power control system for charging pile |
| CN117277525B (en) * | 2023-09-26 | 2024-01-16 | 吉林省艾特网络传媒有限公司 | Intelligent power control system for charging pile |
| CN117081218A (en) * | 2023-10-16 | 2023-11-17 | 南方电网数字电网研究院有限公司 | Charging pile with automatic charging mode switching function |
| CN117081218B (en) * | 2023-10-16 | 2024-04-05 | 南方电网数字电网研究院股份有限公司 | Charging pile with automatic charging mode switching function |
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