CN110745026B - Intelligent charging stake - Google Patents
Intelligent charging stake Download PDFInfo
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- CN110745026B CN110745026B CN201911066844.5A CN201911066844A CN110745026B CN 110745026 B CN110745026 B CN 110745026B CN 201911066844 A CN201911066844 A CN 201911066844A CN 110745026 B CN110745026 B CN 110745026B
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- 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
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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- 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
- B60L53/66—Data transfer between charging stations and vehicles
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- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- 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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- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an intelligent charging pile which comprises a microcontroller, a voltage detection circuit, a current detection circuit, a communication circuit, an emergency stop detection circuit, a control guide circuit and a relay, wherein the voltage detection circuit, the current detection circuit, the communication circuit, the emergency stop detection circuit, the control guide circuit and the relay are all connected with the microcontroller. The charging pile comprises a plurality of charging piles, a plurality of detection circuits are arranged on the charging pile, and the charging piles can be communicated with the intelligent terminal through the communication circuits, so that the intelligent degree of the charging piles is increased, and an electric vehicle owner can know the real-time state and position distribution of the charging piles through the intelligent terminal, and the electric vehicle owner can conveniently search and use the charging piles.
Description
Technical Field
The invention relates to the technical field of charging piles, in particular to an intelligent charging pile.
Background
Under the global energy shortage, advocated the big background of clean energy, new forms of energy electric automobile has obtained rapid development under each side's concern, fills electric pile and is the supporting product that is indispensable in the electric automobile energy supply, therefore the distribution of battery charging pile, use convenience, intellectuality and human-computer interaction's quality play crucial effect to electric automobile's use.
However, the construction of the charging pile is far behind the development and sale of the electric vehicle at present, and even becomes a bottleneck which seriously restricts the development of the new energy vehicle industry. The owner of the private car often faces the phenomena of no pile or pile, no position and the like, or the charging safety problems of complicated installation, high installation engineering cost, water and electricity leakage prevention and the like of the charging equipment after the installation occur in the charging pile installation process; meanwhile, the phenomena of insufficient capacitance, unreasonable distribution of charging piles and the like exist, and the main reasons for the phenomena are that the existing charging piles are deficient to a certain extent in the aspects of intellectualization, networking, informatization and the like.
Thus, the prior art has yet to be improved and enhanced.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide the intelligent charging pile which can be communicated with an intelligent terminal under the condition of ensuring charging safety, has higher intelligent degree and is convenient for a vehicle owner to search and use the charging pile.
In order to achieve the purpose, the invention adopts the following technical scheme:
an intelligent charging pile, comprising:
the microcontroller is used for controlling the working state of the charging pile;
the voltage detection circuit is used for detecting the voltage of the charging pile in the process of charging the automobile in real time and sending the detected voltage to the microcontroller;
the current detection circuit is used for monitoring the current of the charging pile in the process of charging the automobile in real time and sending the detected current to the microcontroller;
the communication circuit is used for communicating with the intelligent terminal and sending the running state of the charging pile to the intelligent terminal;
the emergency stop detection circuit is used for detecting whether the emergency stop switch is closed or not and sending an emergency stop signal to the microcontroller when the emergency stop switch is closed;
the control guidance circuit is used for detecting whether the automobile is successfully accessed and sending a connection confirmation signal to the microcontroller;
and the relay is connected with the microcontroller and is used for controlling the connection state between the alternating current commercial power and the alternating current charging gun.
Preferably, in the intelligent charging pile, the microcontroller adopts a 32-bit embedded processor.
Preferably, in the intelligent charging pile, the voltage detection circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first transformer, a first rectifier bridge, a first operational amplifier, a second operational amplifier, a first capacitor, a second capacitor and a first diode, one end of the first resistor is connected to a live wire of an alternating current commercial power, the other end of the first resistor is connected to a 1 st pin of the first transformer through the second resistor, one end of the third resistor is connected to a zero wire of the alternating current commercial power, the other end of the third resistor is connected to a 2 nd pin of the first transformer through the fourth resistor, a 3 rd pin of the first transformer is connected to a 2 nd pin of the first rectifier bridge, a 4 th pin of the first transformer is connected to a 1 st pin of the first rectifier bridge, a 3 rd pin of the first rectifier bridge is connected to one end of the fifth resistor and a non-phase input end of the first operational amplifier, the other end of the 4 th pin of the first rectifier bridge and the fifth resistor are grounded, the inverting input end of the first operational amplifier is connected with the output end of the first operational amplifier and one end of the sixth resistor, the other end of the sixth resistor is connected with one end of the seventh resistor, one end of the first capacitor and the non-inverting input end of the second operational amplifier, the other end of the seventh resistor and the other end of the first capacitor are grounded, the inverting input end of the second operational amplifier is connected with the output end of the second operational amplifier and one end of the eighth resistor, the other end of the eighth resistor is connected with the anode of the first diode, one end of the second capacitor and the microcontroller, and the cathode of the first diode is connected with a 3.3V power supply.
Preferably, in the intelligent charging pile, the current detection circuit includes a second rectifier bridge, a ninth resistor, a tenth resistor, an eleventh resistor, a fourth capacitor, a second diode and a third diode, the live wire of the alternating current commercial power is connected to the 2 nd pin of the second rectifier bridge, the zero line of the alternating current commercial power is connected to the 1 st pin of the second rectifier bridge, the 3 rd pin of the second rectifier bridge is connected with one end of the ninth resistor, one end of the third capacitor and the anode of the second diode, the cathode of the second diode is connected with the anode of the third diode through the tenth resistor, one end of the eleventh resistor, one end of the fourth capacitor and the microcontroller, the cathode of the third diode is connected with the 3.3V power supply, and the 4 th pin of the second rectifier bridge, the other end of the ninth resistor, the other end of the third capacitor and the eleventh resistor. The other end of the fourth capacitor is grounded.
Preferably, intelligent charging stake in, communication circuit includes wired communication module and wireless communication module, wired communication module and wireless communication module all with microcontroller connects, wired communication module adopts RS485 communication, RS232 communication or CAN bus communication, wireless communication module adopts ethernet communication, GPRS communication or 4G communication.
Preferably, in the intelligent charging pile, the emergency stop detection circuit includes a twelfth resistor and a thirteenth resistor, one end of the twelfth resistor is connected to one ends of the emergency stop switch and the thirteenth resistor, the other end of the thirteenth resistor is connected to the 3.3V power supply, and the other end of the twelfth resistor is connected to the microcontroller.
Preferably, in the intelligent charging pile, the control guidance circuit is specifically configured to detect whether a CP signal exists when the charging pile is connected to an electric vehicle, send a PWM signal to the electric vehicle when the CP signal is determined to exist, receive a matching signal fed back by the electric vehicle, send a connection determination signal to the microcontroller, and control the relay to be closed by the microcontroller.
Preferably, in the intelligent charging pile, the intelligent charging pile further comprises an electric leakage protector, and the electric leakage protector is arranged between the alternating current mains supply and the relay.
Preferably, in the intelligent charging pile, the intelligent charging pile is further provided with a lightning protection surge protection device, and the lightning protection surge protection device is connected with the earth leakage protector and the earth wire.
Compared with the prior art, the intelligent charging pile provided by the invention comprises a microcontroller, a voltage detection circuit, a current detection circuit, a communication circuit, an emergency stop detection circuit, a control guidance circuit and a relay, wherein the voltage detection circuit, the current detection circuit, the communication circuit, the emergency stop detection circuit, the control guidance circuit and the relay are all connected with the microcontroller. The charging pile comprises a plurality of charging piles, a plurality of detection circuits are arranged on the charging pile, and the charging piles can be communicated with the intelligent terminal through the communication circuits, so that the intelligent degree of the charging piles is increased, and an electric vehicle owner can know the real-time state and position distribution of the charging piles through the intelligent terminal, and the electric vehicle owner can conveniently search and use the charging piles.
Drawings
Fig. 1 is a block diagram of an intelligent charging pile according to a preferred embodiment of the present invention.
Fig. 2 is a schematic diagram of a preferred embodiment of the voltage detection circuit in the intelligent charging pile according to the present invention.
Fig. 3 is a schematic diagram of a preferred embodiment of the current detection circuit in the intelligent charging pile according to the present invention.
Fig. 4 is a schematic diagram of a preferred embodiment of the emergency stop detection circuit in the intelligent charging pile according to the present invention.
Fig. 5 is a schematic diagram of a preferred embodiment of the control guidance circuit in the intelligent charging pile according to the present invention.
Fig. 6 is an equivalent schematic diagram of a preferred embodiment of the intelligent charging pile provided by the invention during charging.
Detailed Description
The invention provides an intelligent charging pile, and in order to make the purpose, technical scheme and effect of the invention clearer and clearer, the invention is further described in detail below by referring to the attached drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, which is a block diagram of a preferred embodiment of the intelligent charging pile provided in this embodiment, the intelligent charging pile includes a microcontroller 1, a voltage detection circuit 2, a current detection circuit 3, a communication circuit 4, an emergency stop detection circuit 5, a control guidance circuit 6, and a relay 7, the voltage detection circuit 2, the current detection circuit 3, the communication circuit 4, the emergency stop detection circuit 5, the control guidance circuit 6, and the relay 7 are all connected to the microcontroller 1, and the relay 7 is disposed between the ac mains supply and an ac charging gun of the intelligent charging pile.
Specifically, the voltage detection circuit 2 is used for detecting the voltage of the charging pile in the process of charging the automobile in real time, sending the detected voltage to the microcontroller 1, judging the voltage by the microcontroller 1, and controlling the charging pile to stop charging when the voltage is greater than the safe voltage; the current detection circuit 3 is used for monitoring the current of the charging pile in the process of charging the automobile in real time, sending the detected current to the microcontroller 1, judging the current by the microcontroller 1, and controlling the charging pile to inform charging when the current is greater than the safe current; the communication circuit 4 is used for communicating with the intelligent terminal and sending the operation state of the charging pile to the intelligent terminal, specifically, in order to increase the intelligence degree of the charging pile, the charging pile provided by the embodiment can be communicated with an intelligent terminal, the intelligent terminal can be a mobile phone, the charging pile can send the electric quantity, the position, the charging state, the charging record and the charging load monitored in real time to the mobile terminal through the communication circuit 4, a user can inquire the position, the charging state, the charging record and the like of the charging pile through the mobile terminal, in addition, the user can also navigate to the position of the charging pile through the mobile terminal directly to make reservation of charging or start or stop of charging, in addition, charging billing, mobile payment, recharging and the like can be carried out when the mobile terminal is communicated with the charging pile, so that the intelligent degree of the charging pile is increased; the emergency stop detection circuit 5 is used for detecting whether an emergency stop switch is closed or not and sending an emergency stop signal to the microcontroller 1 when the emergency stop switch is closed, so that the work of the charging pile can be stopped manually immediately when the charging pile is abnormal, and the safety performance of the charging pile is improved; the control guidance circuit 6 is used for detecting whether the automobile is successfully accessed and sending a connection confirmation signal to the microcontroller 1, so that the automobile can be directly charged after being connected with the charging pile without manual additional operation; the relay 7 is used for controlling the connection state between the alternating current commercial power and the alternating current charging gun, so that the charging gun can charge or disconnect the electric automobile; microcontroller 1 is the control center who fills electric pile, can manage and control other each module to the information that will fill electric pile sends intelligent terminal through communication circuit 4, during concrete implementation, microcontroller 1 adopts 32 embedded processors, for example ARM7 series's treater, mips treater etc. stable performance, and processing speed is fast, can guarantee to fill the normal operating of electric pile.
This embodiment can guarantee to fill the security of electric pile when charging through setting up a plurality of detection circuitry, in addition, through setting up communication circuit, makes fill electric pile and can carry out the communication with intelligent terminal, increases the intelligent degree that fills electric pile, and then can make the electric automobile car owner can know the real-time condition and the position distribution that fill electric pile through intelligent terminal, makes things convenient for the car owner to fill the searching and the use of electric pile.
In a further embodiment, referring to fig. 2 together, the voltage detection circuit 2 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first transformer CT1, a first rectifier bridge B1, a first operational amplifier U1, a second operational amplifier U2, a first capacitor C1, a second capacitor C2, and a first diode D1, one end of the first resistor R1 is connected to the live wire of the ac mains, the other end of the first resistor R1 is connected to the first pin 1 of the first transformer CT1 through the second resistor R2, one end of the third resistor R1 is connected to the neutral wire of the ac mains, the other end of the third resistor R1 is connected to the first pin 2 of the first transformer CT1 through the fourth resistor R1, the first pin B363 of the first transformer CT1 is connected to the first pin B1 of the first rectifier bridge CT 1B 1, the 3 rd pin of the first rectifier bridge B1 is connected with one end of a fifth resistor R5 and the non-inverting input end of a first operational amplifier U1, the 4 th pin of the first rectifier bridge B1 and the other end of the fifth resistor R5 are both grounded, the inverting input terminal of the first operational amplifier U1 is connected with the output terminal of the first operational amplifier U1 and one end of the sixth resistor R6, the other end of the sixth resistor R6 is connected with one end of the seventh resistor R7, one end of the first capacitor C1 and the non-inverting input end of the second operational amplifier U2, the other end of the seventh resistor R7 and the other end of the first capacitor C1 are both grounded, the inverting input terminal of the second operational amplifier U2 is connected with the output terminal of the second operational amplifier U2 and one end of the eighth resistor R8, the other end of the eighth resistor R8 is connected with the anode of the first diode D1, one end of the second capacitor C2 and the microcontroller, and the cathode of the first diode D1 is connected with a 3.3V power supply.
Specifically, alternating current commercial power is processed by a first transformer CT1 and a first rectifier bridge B1 and then output to a first operational amplifier U1, and then output to a second operational amplifier U2, after amplification and noise reduction processing, the charged voltage is output to the microcontroller 1, and the microcontroller 1 performs analog-to-digital conversion to obtain the charged voltage, so that the detection of the charged voltage is realized, the microcontroller 1 can judge the magnitude of the voltage, and the charging pile is controlled to stop charging when the voltage is greater than a safe voltage, so that the charging safety is ensured.
In a further embodiment, referring to fig. 3 together, the current detection circuit includes a second rectifier bridge B2, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a fourth capacitor C4, a second diode D2 and a third diode D3, a 2 nd pin of the second rectifier bridge B2 is connected to a live wire of the ac commercial power, a 1 st pin of the second rectifier bridge B2 is connected to a zero line of the ac commercial power, a 3 rd pin of the second rectifier bridge B2 is connected to one end of the ninth resistor R9, one end of the third capacitor C3 and an anode of the second diode D2, a cathode of the second diode D2 is connected to an anode of the third diode D3, one end of the eleventh resistor R11, one end of the fourth capacitor C4 and the microcontroller 1 through a tenth resistor R10, a cathode of the third diode D3 is connected to the 3.3V power supply, and another end of the second rectifier bridge B2, the ninth resistor R9 and the third diode D3, The other end of the eleventh resistor R11 and the other end of the fourth capacitor C4 are both grounded.
Specifically, the alternating current mains supply is rectified by the second rectifier bridge B2 and then outputs direct current, and then is rectified, filtered and denoised by the ninth resistor R9, the tenth resistor R10, the eleventh resistor R11, the fourth capacitor C4, the second diode D2 and the third diode D3, and then is output to the microprocessor 1, and the microcontroller 1 performs analog-to-digital conversion to obtain charging current, so that the charging current can be detected, the microcontroller 1 can judge the magnitude of the current, and when the current is greater than the safety current, the charging pile is controlled to stop charging, and the charging safety is ensured.
In a further embodiment, communication circuit 4 includes wired communication module and wireless communication module, wired communication module and wireless communication module all with microcontroller 1 connects, wired communication module adopts RS485 communication, RS232 communication or CAN bus communication, wireless communication module adopts ethernet communication, GPRS communication or 4G communication, and the communication task of filling electric pile is accomplished to the communication mode of this embodiment accessible multiple difference, and then CAN fill electric pile's signal transmission to intelligent terminal or charge management station.
In a further embodiment, referring to fig. 4, the emergency stop detection circuit 5 includes a twelfth resistor R12 and a thirteenth resistor R13, one end of the twelfth resistor R12 is connected to one ends of the emergency stop switch and the thirteenth resistor R13, the other end of the thirteenth resistor R13 is connected to the 3.3V power supply, the other end of the twelfth resistor R12 is connected to the microcontroller 1, and the microcontroller 1 determines whether the emergency stop switch is closed by monitoring a change condition of a voltage of the twelfth resistor R12, so that whether the charging is immediately stopped can be controlled according to a closed state of the emergency stop switch, and the charging safety is enhanced.
In a further embodiment, the control guidance circuit 6 is specifically configured to detect whether a CP signal exists when the charging pile is connected to the electric vehicle, send a PWM signal to the electric vehicle when the CP signal is determined to exist, receive a matching signal fed back by the electric vehicle, receive the matching signal fed back by the electric vehicle, send a connection determination signal to the microcontroller 1, and control the relay 7 to be closed by the microcontroller 1; specifically, referring to fig. 5 and 6, the RC resistor is mounted on a vehicle-mounted charger or other vehicle-mounted control unit, and can detect a charging pile control device, when the connection between the vehicle and the charging pile is completed, R3 is merged into a CP signal, the charging pile detects the CP signal through the control guidance circuit 6 to confirm the connection, and after the confirmation is completed, the charging pile closes the S1 switch, and sends a PWM signal to the vehicle; when the vehicle detects that the PWM signal adjusts input current, such as PWM matching, the S2 switch is closed after the vehicle is ready, R16 is merged into the CP signal, the charging pile detects that R16 is merged into the contactor, K1 and K2 are closed for charging, when the charger finishes charging, S1 is switched to 12V (PWM is closed), the vehicle is disconnected from S2, and the charger disconnects K contactors K1 and K2 to finish charging.
In the preferred embodiment, the intelligent charging pile further comprises an electric leakage protector, wherein the electric leakage protector is arranged between the alternating current commercial power and the relay 7, so that the charging pile can be prevented from charging electric leakage, and the safety performance of the charging pile is enhanced.
More preferably, intelligent charging stake still is provided with lightning protection surge protection device, lightning protection surge protection device connects earth-leakage protector and earth connection, lightning protection surge protection device can prevent that surge current is too big and lead to filling the electric pile to damage, has also strengthened the security of charging.
In summary, the intelligent charging pile provided by the invention comprises a microcontroller, a voltage detection circuit, a current detection circuit, a communication circuit, an emergency stop detection circuit, a control guidance circuit and a relay, wherein the voltage detection circuit, the current detection circuit, the communication circuit, the emergency stop detection circuit, the control guidance circuit and the relay are all connected with the microcontroller. The charging pile comprises a plurality of charging piles, a plurality of detection circuits are arranged on the charging pile, and the charging piles can be communicated with the intelligent terminal through the communication circuits, so that the intelligent degree of the charging piles is increased, and an electric vehicle owner can know the real-time state and position distribution of the charging piles through the intelligent terminal, and the electric vehicle owner can conveniently search and use the charging piles.
It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.
Claims (8)
1. An intelligent charging pile, comprising:
the microcontroller is used for controlling the working state of the charging pile;
the voltage detection circuit is used for detecting the voltage of the charging pile in the process of charging the automobile in real time and sending the detected voltage to the microcontroller;
the current detection circuit is used for monitoring the current of the charging pile in the process of charging the automobile in real time and sending the detected current to the microcontroller;
the communication circuit is used for communicating with the intelligent terminal and sending the running state of the charging pile to the intelligent terminal;
the emergency stop detection circuit is used for detecting whether the emergency stop switch is closed or not and sending an emergency stop signal to the microcontroller when the emergency stop switch is closed;
the control guidance circuit is used for detecting whether the automobile is successfully accessed and sending a connection confirmation signal to the microcontroller;
the relay is connected with the microcontroller and is used for controlling the connection state between the alternating current commercial power and the alternating current charging gun;
the voltage detection circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a first transformer, a first rectifier bridge, a first operational amplifier, a second operational amplifier, a first capacitor, a second capacitor and a first diode, wherein one end of the first resistor is connected with a live wire of alternating current commercial power, the other end of the first resistor is connected with a 1 st pin of the first transformer through the second resistor, one end of the third resistor is connected with a zero wire of the alternating current commercial power, the other end of the third resistor is connected with a 2 nd pin of the first transformer through the fourth resistor, a 3 rd pin of the first transformer is connected with a 2 nd pin of the first rectifier bridge, a 4 th pin of the first transformer is connected with the 1 st pin of the first rectifier bridge, the 3 rd pin of the first rectifier bridge is connected with one end of the fifth resistor and the in-phase input end of the first operational amplifier, the other end of the 4 th pin of the first rectifier bridge and the fifth resistor are grounded, the inverting input end of the first operational amplifier is connected with the output end of the first operational amplifier and one end of the sixth resistor, the other end of the sixth resistor is connected with one end of the seventh resistor, one end of the first capacitor and the non-inverting input end of the second operational amplifier, the other end of the seventh resistor and the other end of the first capacitor are grounded, the inverting input end of the second operational amplifier is connected with the output end of the second operational amplifier and one end of the eighth resistor, the other end of the eighth resistor is connected with the anode of the first diode, one end of the second capacitor and the microcontroller, and the cathode of the first diode is connected with a 3.3V power supply.
2. The intelligent charging pile of claim 1, wherein the microcontroller employs a 32-bit embedded processor.
3. The intelligent charging pile of claim 2, wherein the current detection circuit comprises a second rectifier bridge, a ninth resistor, a tenth resistor, an eleventh resistor, a fourth capacitor, a second diode, and a third diode, the No. 2 pin of the second rectifier bridge is connected with a live wire of alternating current commercial power, the No. 1 pin of the second rectifier bridge is connected with a zero line of the alternating current commercial power, a pin 3 of the second rectifier bridge is connected with one end of a ninth resistor, one end of a third capacitor and the anode of a second diode, the cathode of the second diode is connected with the anode of the third diode, one end of the eleventh resistor, one end of the fourth capacitor and the microcontroller through the tenth resistor, and the negative electrode of the third diode is connected with a 3.3V power supply, and the 4 th pin of the second rectifier bridge, the other end of the ninth resistor, the other end of the third capacitor, the other end of the eleventh resistor and the other end of the fourth capacitor are all grounded.
4. The intelligent charging pile of claim 3, wherein the communication circuit comprises a wired communication module and a wireless communication module, the wired communication module and the wireless communication module are both connected with the microcontroller, the wired communication module adopts RS485 communication, RS232 communication or CAN bus communication, and the wireless communication module adopts Ethernet communication, GPRS communication or 4G communication.
5. The intelligent charging pile according to claim 4, wherein the emergency stop detection circuit comprises a twelfth resistor and a thirteenth resistor, one end of the twelfth resistor is connected with one ends of the emergency stop switch and the thirteenth resistor, the other end of the thirteenth resistor is connected with a 3.3V power supply, and the other end of the twelfth resistor is connected with the microcontroller.
6. The intelligent charging pile according to claim 5, wherein the control guidance circuit is specifically configured to detect whether a CP signal exists when the charging pile is connected with an electric vehicle, send a PWM signal to the electric vehicle when the CP signal is confirmed, and send a connection confirmation signal to the microcontroller after receiving a matching signal fed back by the electric vehicle, wherein the microcontroller controls the relay to be closed.
7. The intelligent charging pile according to claim 1, further comprising a leakage protector disposed between the ac mains and the relay.
8. The intelligent charging pile according to claim 7, further provided with a lightning protection surge protection device, wherein the lightning protection surge protection device is connected with the earth leakage protector and the earth wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911066844.5A CN110745026B (en) | 2019-11-04 | 2019-11-04 | Intelligent charging stake |
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| CN201911066844.5A CN110745026B (en) | 2019-11-04 | 2019-11-04 | Intelligent charging stake |
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| CN110745026A CN110745026A (en) | 2020-02-04 |
| CN110745026B true CN110745026B (en) | 2021-04-02 |
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| CN111634206B (en) * | 2020-05-18 | 2021-09-21 | 珠海铠湾智电科技有限公司 | Electric automobile alternating-current charging intelligent combined electrical apparatus |
| CN113533837A (en) * | 2021-06-23 | 2021-10-22 | 上海南土信息科技有限公司 | Alternating current detection module |
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| CN110745026A (en) | 2020-02-04 |
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