CN108482136B - DC charging pile based on Internet of things - Google Patents
DC charging pile based on Internet of things Download PDFInfo
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- CN108482136B CN108482136B CN201711139021.1A CN201711139021A CN108482136B CN 108482136 B CN108482136 B CN 108482136B CN 201711139021 A CN201711139021 A CN 201711139021A CN 108482136 B CN108482136 B CN 108482136B
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- 238000012544 monitoring process Methods 0.000 claims abstract description 34
- 230000003993 interaction Effects 0.000 claims abstract description 25
- 230000007175 bidirectional communication Effects 0.000 claims abstract description 9
- 230000006854 communication Effects 0.000 claims description 38
- 238000004891 communication Methods 0.000 claims description 38
- 239000003990 capacitor Substances 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 17
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000006855 networking Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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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
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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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
-
- 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
- B60L53/665—Methods related to measuring, billing or payment
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/003—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for electricity
- G07F15/005—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity for electricity dispensed for the electrical charging of 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)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a direct current charging pile based on the Internet of things, which comprises a power supply unit, a main control unit, a protection and monitoring unit, a man-machine interaction unit, a management server, an output unit, an auxiliary power supply unit and a charging unit, wherein the input end of the power supply unit is connected with an external power supply, one output end of the power supply unit is connected with the input end of the output unit, the other output end of the power supply unit is connected with the input end of the auxiliary power supply unit, the main control unit is in bidirectional communication connection with the power supply unit, the protection and monitoring unit, the man-machine interaction unit and the charging unit are in bidirectional communication connection with the main control unit, the main control unit is in bidirectional communication connection with the management server, and the auxiliary power supply unit provides direct current power for the main control unit, the protection and monitoring unit, the man-machine interaction unit and the charging unit. The advantage of safer and more reliable charging process is realized.
Description
Technical Field
The invention relates to the field of direct current charging, in particular to a direct current charging pile based on the Internet of things.
Background
At present, with the continuous improvement of the development level of the economic society in China, the automobile conservation amount is continuously increased, and various charging piles are generated for solving the problem of national fuel shortage, reducing the automobile exhaust emission and accelerating the popularization and application of new energy automobiles in China.
However, the existing direct current charging pile has a plurality of problems. On one hand, the charging pile industry is imperfect in operation management specifications of metering, charging, settlement and the like, and various charging piles cannot be uniformly managed; on the other hand, the charging interruption phenomenon often occurs in the charging process of the charging pile, and the problems of complex charging operation flow, inflexible charging payment mode and the like are solved, so that the user feels inconvenient deeply.
Disclosure of Invention
The invention aims to solve the problems and provides a direct current charging pile based on the Internet of things, so as to realize the advantages of safer and more reliable charging process.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a direct current fills electric pile based on thing networking, includes power supply unit, main control unit, protection and monitoring unit, man-machine interaction unit, management server, output unit, auxiliary power unit and charging unit, power supply unit's input is connected with external power source, power supply unit's one way output is connected with output unit's input, power supply unit's another way output is connected with auxiliary power unit's input, main control unit and power supply unit two-way communication connection, protection and monitoring unit, man-machine interaction unit and charging unit and main control unit two-way communication connection, main control unit and management server two-way communication connection, auxiliary power unit provides direct current power supply for main control unit, protection and monitoring unit, man-machine interaction unit and charging unit.
Preferably, the intelligent power supply system further comprises a user end, wherein the user end is in communication connection with the management server, an intelligent electric meter is arranged on the input end of the power supply unit, and the intelligent electric meter is connected with the main control unit through an RS232 communication circuit.
Preferably, the man-machine interaction unit is connected with the main control unit through an RS485 communication circuit, and the man-machine interaction unit adopts a touch screen.
Preferably, the intelligent card reader further comprises a card swiping module, wherein the card swiping module is connected with the main control unit through an RS485 communication circuit, and the protection and monitoring unit is connected with the main control unit through the RS485 communication circuit.
Preferably, the power supply unit is connected with the main control unit through a CAN bus.
Preferably, the main control unit is connected with the management server through a network.
Preferably, the signal of the protection and monitoring unit is transmitted to the main control unit after passing through an amplifying circuit, the amplifying circuit comprises an operational amplifier U41A, an operational amplifier U41B, an operational amplifier U41C and an operational amplifier U41D, a resistor R221, a resistor R220, a capacitor C124, a resistor R222 and a resistor R223 are sequentially connected in series between the non-inverting input end of the operational amplifier U41A and the inverting input end of the operational amplifier U41A, a resistor R219 is connected in parallel with the capacitor C124, a resistor R199 is connected in parallel with the resistor R219, a resistor R225 is connected in series between the inverting input end and the output end of the operational amplifier U41A, a capacitor C126 is connected in parallel with the resistor R225, a resistor R224 is connected in series between the noninverting input end of the operational amplifier U41A and the ground, a capacitor C125 is connected in parallel with the resistor R224, a resistor R226 is connected in series between the output of the op-amp U41A and the inverting input of the op-amp U41B, a resistor R227 is connected in series between the non-inverting input end of the operational amplifier U41B and the ground, a diode D16 is connected in series between the inverting input end and the output end of the operational amplifier U41B, the anode of the diode D16 is connected with the output end of the operational amplifier U41B, a series circuit formed by the resistor R228 and the diode D17 is connected with the diode D16 in parallel, an anode of the diode D17 is connected with one end of the resistor R228, a cathode of the diode D17 is connected with an anode of the diode D16, a diode D17 and a resistor R229 are connected in series between the output terminal of the op-amp U41B and the inverting input terminal of the op-amp U41C, a resistor R226 and a resistor R230 are sequentially connected in series between the inverting input end of the operational amplifier U41B and the inverting input end of the operational amplifier U41C, a resistor R231 is connected in series between the inverting input end and the output end of the operational amplifier U41C, a resistor R232 is connected in series between the non-inverting input end and the ground of the operational amplifier U41C, the output end of the operational amplifier U41C is connected with the non-inverting input end of the operational amplifier U41D, and the inverting input end of the operational amplifier U41D is connected with the output end in series.
Preferably, the resistance value of the resistor R220 is 100deg.KΩ, the resistance value of the resistor R221 is 100deg.KΩ, the resistance value of the resistor R222 is 100deg.KΩ, the resistance value of the resistor R223 is 100deg.KΩ, the resistance value of the resistor R224 is 200KΩ, the resistance value of the resistor R225 is 200KΩ, the resistance value of the resistor R226 is 10KΩ, the resistance value of the resistor R227 is 10KΩ, the resistance value of the resistor R228 is 20KΩ, the resistance value of the resistor R229 is 10KΩ, the resistance value of the resistor R230 is 10KΩ, the resistance value of the resistor R231 is 10KΩ, and the resistance value of the resistor R232 is 10KΩ.
Preferably, the capacitance of the capacitor C124 is 220pF, the capacitance of the capacitor C125 is 220pF, and the capacitance of the capacitor C126 is 220pF.
The technical scheme of the invention has the following beneficial effects:
According to the technical scheme, the main control unit, the protection and monitoring unit, the management server and other unit circuits are arranged to monitor the process and intelligently control the charging process of the direct current charging pile, and once the charging is abnormal, the main control unit controls the charging circuit to dynamically adjust, so that the purpose of safer and more reliable charging process is achieved.
And the direct current charging pile disclosed by the technical scheme is provided with a matched management server and a flexible man-machine interaction interface, operators can modify management modes such as metering and charging according to different market demands, citizens can easily find an idle charging pile through mobile phone downloading APP, charging parameters are set, the quick charging process of the electric automobile is realized, and meanwhile, the charging pile is provided with various charging protection mechanisms, so that the charging process is safer and more reliable.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic block diagram of a dc charging pile based on the internet of things according to an embodiment of the present invention;
fig. 2 to 29 are electronic circuit diagrams of a dc charging pile based on the internet of things according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The direct current charging pile based on the Internet of things integrates the system, the charging interface, the man-machine interaction interface, the communication charging and other parts into a whole, and is used for carrying out direct current rapid charging on the electric automobile. The direct current charging pile dynamically adjusts charging current or voltage parameters based on data provided by a Battery Management System (BMS), performs corresponding actions, and completes the intelligent charging process. The device is suitable for various open parking lots such as public parking lots, residential community parking lots, enterprise special parking lots and the like, and underground parking lots or charging stations.
As shown in fig. 1, a dc charging pile based on the internet of things comprises a power supply unit, a main control unit, a protection and monitoring unit, a man-machine interaction unit, a management server, an output unit, an auxiliary power supply unit and a charging unit, wherein the input end of the power supply unit is connected with an external power supply, one output end of the power supply unit is connected with the input end of the output unit, the other output end of the power supply unit is connected with the input end of the auxiliary power supply unit, the main control unit is in bidirectional communication connection with the power supply unit, the protection and monitoring unit, the man-machine interaction unit and the charging unit are in bidirectional communication connection with the main control unit, the main control unit is in bidirectional communication connection with the management server, and the auxiliary power supply unit provides a dc power supply for the main control unit, the protection and monitoring unit, the man-machine interaction unit and the charging unit.
The hardware electronic circuit diagrams of the direct current charging pile based on the Internet of things are shown in fig. 2 to 29.
The management server adopts the network operation management platform 'Haihong e charging' of the company, the input voltage of the direct-current charging pile adopts 380V plus or minus 15% of three-phase four-wire AC, the frequency is 50Hz, the output is adjustable direct current, and the direct-current charging pile directly charges the power battery of the electric automobile. Because the direct current charging pile adopts a three-phase four-wire system for power supply, the output voltage and current adjustment range is large, and the requirement of quick charging can be realized. One path of input voltage is processed by the power supply unit under the control of the main control unit and then is charged by the output unit, and the other path of input voltage is used for providing working voltage for the main control unit, the protection and monitoring unit, the man-machine interaction unit, the charging unit and the like through the auxiliary power supply unit.
The intelligent power supply system also comprises a user end which is in communication connection with the management server, an intelligent ammeter is arranged on the input end of the power supply unit, the intelligent ammeter is connected with the main control unit through an RS232 communication circuit.
The man-machine interaction unit is connected with the main control unit through an RS485 communication circuit, and the man-machine interaction unit adopts a touch screen.
The intelligent card reader also comprises a card swiping module, wherein the card swiping module is connected with the main control unit through an RS485 communication circuit, and the protection and monitoring unit is connected with the main control unit through an RS485 communication circuit.
The power supply unit is connected with the main control unit through a CAN bus.
The main control unit is connected with the management server through a network.
The main control unit comprises a charging control module, a charging control output module and a communication module;
and a charging control module: judging the current charging stage according to the voltage state of the monitoring detection point or the communication message sent by the vehicle, and further controlling the charging pile to perform safe charging;
and a charging control output module: dynamically adjusting the output voltage and the output current by controlling the power supply unit;
and a communication module: communicating with the charged vehicle to identify vehicle battery information and exchanging charging information with the vehicle in real time during charging; and communicating with the management server so as to report the consumption information and the charging state to the management server in time.
The direct current charging pile has an Ethernet communication function, and a hardware circuit is formed by adopting an STM32F107 self-contained MAC module and a PHY chip DP 83848. The software adopts an open source UIP protocol stack to realize TCP/IP communication. The charging pile main control unit is connected with a network operation management platform 'Haihong e charging' in an Ethernet communication mode, and the following functions are realized:
And the functions of monitoring, processing and managing the data of the charging pile in real time and the database are realized. The management platform has a real-time monitoring function on the working state of the charging pile and charging information such as charging voltage, charging current and the like, and has a real-time alarm prompting function on abnormal information or operation; each static parameter such as the factory number of the charging pile is automatically monitored and maintained; the network operation management platform provides centralized storage and inquiry functions for real-time data and historical data of the charging pile and the battery pack, such as remote measurement, remote signaling, alarm event and the like; the network operation management platform has the functions of user account management, operation record, fault record, abnormal record of charging operation parameters and abnormal record of battery parameters.
The network operation management platform has intelligent metering and charging functions, has functions of card issuing, recharging, consumption record statistics and inquiry and the like, and the consumption record has integrity; the network operation management platform can issue a control instruction to the charging pile, has a remote setting function, and can set data such as peak valley electricity price, network, charging mode, charging parameters, passwords and the like of the charging pile.
The network operation management platform has perfect authority management function, can set authority levels of different users in a grading way, and ensures that the user rights are matched with the data authorities in the platform.
The charging records and various data curves are displayed in a report form, and an Excel table can be automatically generated by selecting a time period.
The manager can also carry out remote configuration or program upgrading on the pile body through the Ethernet.
The network management platform has a background communication function, and can upload user demand data to the mobile phone APP client of the Haihong e-charge.
The main control unit has a charging flow control function, a charging module control output function and a communication management function.
The charging flow control function is used for judging which stage is currently in charging according to the voltage state of the detection point or the communication message sent by the vehicle, and further controlling an executing mechanism in the direct current charging pile to safely charge the vehicle.
The power supply unit output control is to dynamically adjust the output voltage and the output current through the CAN bus control power supply unit so as to adapt to different charging stages and different types of vehicles at present.
The communication function includes two aspects. The first is communication with the connected vehicle to identify vehicle battery information and charging information exchanged in real time during charging. And the second means communication between the pile body and the server, and consumption information and charging state of the user can be timely reported to a network operation management platform, so that unified management of multiple piles is facilitated.
DC fills electric pile based on thing networking has safety protection and monitoring function:
The protection and monitoring unit has overcurrent protection and short-circuit protection functions of an input side and an output side; the alternating current input overvoltage, undervoltage and open-phase protection function is provided; the soft start function is provided to prevent the output of direct current impact current; in the charging process, the charging pile main control unit can automatically monitor whether the operation and communication state of each device are normal or not, automatically judge whether the charging connector and the charging cable are correct or not, and automatically monitor the battery state and operation information dynamic state of the BMS so as to enable the battery to be in an optimal charging state; timely reporting and automatically processing abnormal operation and faults; the emergency stop protection function is provided, and the power supply of the charging module can be rapidly cut off and the direct current output switch can be disconnected; an insulation monitoring unit in the protection and monitoring unit is utilized to realize an insulation detection protection function; the intelligent ammeter is used for monitoring the direct-current charging quantity, the charging voltage and the charging current in real time and sending the sampled data to the main control unit, so that corresponding analysis and processing are carried out on each data.
Communication management function of direct current fills electric pile based on thing networking:
the high-speed CAN network is communicated with the BMS of the electric automobile and is used for judging the type of the power battery of the electric automobile; and acquiring state data such as voltage, current, temperature and the like of the power battery before and during charging to complete charging control of the charger.
The main control unit is communicated with the intelligent electric energy meter through the RS485 network to acquire electric energy metering information, and the linkage control of charging billing and charging process is completed.
The output unit is communicated with the vehicle-mounted high-frequency charging module through the high-speed CAN bus, and dynamically adjusts output voltage and output current according to the state and operation information of the charging module, so that linkage control of state monitoring and charging processes of the charging module is completed, and the vehicle-mounted high-frequency charging module is suitable for vehicles in different charging stages and different models at present.
And the charging output data monitoring and the linkage control of the charging process are completed by communicating with the intelligent transmitter through the RS485 network and acquiring the output voltage and current information of the charger.
The main control unit transmits the electric energy metering and charging machine working information to the touch screen through the RS485 network, and simultaneously acquires and executes a control command sent by the touch screen.
The hardware circuit of the charging unit meets the general technical specification of the electric vehicle off-vehicle whole direct current charger and the general technical specification of the electric vehicle off-vehicle whole alternating current charger of the national electric network company. And the technology of data encryption and decryption is adopted, and the cost settlement function is completed together with the background server through the Ethernet communication module.
The man-machine interaction unit comprises a touch screen display module and a charging pile state indication module. The touch screen display module adopts a 7-inch touch screen to realize the display functions of charging time, voltage, current, electric quantity, card balance and consumption amount in the charging process and the setting function of each configuration parameter. The charging pile has three running states of idle state, busy state and fault state, and the charging pile state indication module realizes the judging and indicating functions of the three states.
The auxiliary power supply supplies power for the control systems such as the main control unit, the man-machine interaction module, the protection and monitoring unit, the charging unit and the like. In addition, in the power battery charging process, an auxiliary power supply supplies power to the vehicle-mounted BMS system, and the BMS system monitors the state of the power battery in real time.
The card reader comprises a card reader and an IC card, and the card reader can start a charging flow and settle fees.
And the output unit provides 0-150 kW of power supply capacity, and the maximum output current is 120A.
The main control unit is also provided with a storage unit, the storage unit adopts an SPI flash memory chip, has the performance of Electronic Erasable Programmable (EEPROM), can store 4096 pieces of user information, can not lose data when power is off, can rapidly read data, and can effectively prevent the system from losing data when power is off.
The direct current charging pile based on the Internet of things has a charging mode selection function, and a user can freely select a charging mode in a network management platform or a man-machine interaction touch screen of 'Haihong e charging', so that the charging mode is more convenient and flexible. The charging mode is four types of charging modes including time, electric quantity, money and automatic filling.
DC charging stake has payment mode selection function based on thing networking. The man-machine interaction unit and the network management platform of the 'sea red e charging' can realize automatic recording and charging process, intelligent charging analysis, self-service card swiping and charging, flexible payment mode, and quick payment of the fees by the payment means of treasures, weChats and bank cards.
The mobile phone APP client side of the "Haihong e charging" has personal management functions of client information, charging record, charging and the like; the mobile information management functions of charging station searching, idle charging pile searching, code scanning charging and the like are achieved; the system has the functions of message notification, forum management and the like. The charging station operator can conveniently maintain the information such as the state of the charging station, the charging mode and the like and manage the charging pile.
In the charging process, the charging pile can automatically and dynamically adjust the output current according to the battery state and the operation information sent by the vehicle-mounted BMS. The method comprises the steps of communicating with a background monitoring system of a charging station through an Ethernet to perform remote operation; the communication protocol supports Ethernet, 3G/4G module and national network charging system; the touch screen display can set parameters of the charging pile or start or stop control the charging pile; the network operation management platform 'Haihong e charging' realizes the real-time monitoring, processing and storage of charging pile data, realizes the charging record and report statistics functions, has the intelligent metering charging function, and is configured or updated in program; the battery charger has a perfect charging protection function, prevents the vehicle battery from being overcharged, and is high in safety.
The signal of the protection and monitoring unit is transmitted to the main control unit after passing through the amplifying circuit, and the amplifying circuit, as shown in fig. 29, comprises an operational amplifier U41A, an operational amplifier U41B, an operational amplifier U41C and an operational amplifier U41D, wherein a resistor R221, a resistor R220, a capacitor C124, a resistor R222 and a resistor R223 are sequentially connected in series between the non-inverting input end of the operational amplifier U41A and the inverting input end of the operational amplifier U41A, a resistor R219 is connected in parallel with the capacitor C124, a resistor R225 is connected in parallel with the resistor R219 in parallel between the inverting input end of the operational amplifier U41A and the output end, a resistor R224 is connected in parallel with the capacitor C125 in parallel with the resistor R224 in series between the non-inverting input end of the operational amplifier U41A and the inverting input end of the operational amplifier U41B, a resistor R227 is connected in series between the non-inverting input end of the operational amplifier U41B and the non-inverting input end of the operational amplifier U41B, the diode D16 is connected in series between the inverting input end and the output end of the operational amplifier U41B, the anode of the diode D16 is connected with the output end of the operational amplifier U41B, a series circuit formed by the resistor R228 and the diode D17 is connected in parallel with the diode D16, the anode of the diode D17 is connected with one end of the resistor R228, the cathode of the diode D17 is connected with the anode of the diode D16, the diode D17 and the resistor R229 are connected in series between the output end of the operational amplifier U41B and the inverting input end of the operational amplifier U41C, the resistor R226 and the resistor R230 are connected in series between the inverting input end and the output end of the operational amplifier U41C in sequence, the resistor R232 is connected in series between the non-inverting input end and the ground of the operational amplifier U41C, and the non-inverting input end of the operational amplifier U41D are connected, and the inverting input end and the output end of the operational amplifier U41D are connected in series.
The resistance value of the resistor R220 is 100kΩ, the resistance value of the resistor R221 is 100kΩ, the resistance value of the resistor R222 is 100kΩ, the resistance value of the resistor R223 is 100kΩ, the resistance value of the resistor R224 is 200kΩ, the resistance value of the resistor R225 is 200kΩ, the resistance value of the resistor R226 is 10kΩ, the resistance value of the resistor R227 is 10kΩ, the resistance value of the resistor R228 is 20kΩ, the resistance value of the resistor R229 is 10kΩ, the resistance value of the resistor R230 is 10kΩ, the resistance value of the resistor R231 is 10kΩ, and the resistance value of the resistor R232 is 10kΩ.
The capacitance of the capacitor C124 is 220pF, the capacitance of the capacitor C125 is 220pF, and the capacitance of the capacitor C126 is 220pF.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The direct current charging pile based on the Internet of things is characterized by comprising a power supply unit, a main control unit, a protection and monitoring unit, a man-machine interaction unit, a management server, an output unit, an auxiliary power supply unit and a charging unit, wherein the input end of the power supply unit is connected with an external power supply, one output end of the power supply unit is connected with the input end of the output unit, the other output end of the power supply unit is connected with the input end of the auxiliary power supply unit, the main control unit is in bidirectional communication connection with the power supply unit, the protection and monitoring unit, the man-machine interaction unit and the charging unit are in bidirectional communication connection with the main control unit, the main control unit is in bidirectional communication connection with the management server, and the auxiliary power supply unit provides direct current power for the main control unit, the protection and monitoring unit, the man-machine interaction unit and the charging unit;
the main control unit comprises a charging control module, a charging control output module and a communication module;
the charging control module: judging the current charging stage according to the voltage state of the monitoring detection point or the communication message sent by the vehicle, and further controlling the charging pile to perform safe charging;
the charging control output module: dynamically adjusting the output voltage and the output current by controlling the power supply unit;
The communication module: communicating with the charged vehicle to identify vehicle battery information and exchanging charging information with the vehicle in real time during charging; the system is communicated with the management server, so that consumption information and the charging state are timely reported to the management server;
The signal of the protection and monitoring unit is transmitted to the main control unit after passing through the amplifying circuit, the amplifying circuit comprises an operational amplifier U41A, an operational amplifier U41B, an operational amplifier U41C and an operational amplifier U41D, a resistor R221, a resistor R220, a capacitor C124, a resistor R222 and a resistor R223 are sequentially connected in series between the non-inverting input end of the operational amplifier U41A and the inverting input end of the operational amplifier U41A, a resistor R219 is connected in parallel with the capacitor C124, a resistor R225 is connected in parallel with the resistor R199 in series between the inverting input end and the output end of the operational amplifier U41A, a resistor R224 is connected in parallel with the capacitor C126, a resistor R226 is connected in series between the non-inverting input end of the operational amplifier U41A and the inverting input end of the operational amplifier U41B, a resistor R227 is connected in series between the non-inverting input end of the operational amplifier U41B and the ground, the diode D16 is connected in series between the inverting input end and the output end of the operational amplifier U41B, the anode of the diode D16 is connected with the output end of the operational amplifier U41B, a series circuit formed by a resistor R228 and a diode D17 is connected with the diode D16 in parallel, the anode of the diode D17 is connected with one end of the resistor R228, the cathode of the diode D17 is connected with the anode of the diode D16, the diode D17 and the resistor R229 are connected in series between the output end of the operational amplifier U41B and the inverting input end of the operational amplifier U41C, the resistor R226 and the resistor R230 are sequentially connected in series between the inverting input end of the operational amplifier U41B and the inverting input end of the operational amplifier U41C, the resistor R231 is connected in series between the non-inverting input end and the ground of the operational amplifier U41C, the output end of the operational amplifier U41C is connected with the non-inverting input end of the operational amplifier U41D, and the inverting input end of the operational amplifier U41C is connected in series.
2. The direct current charging pile based on the internet of things according to claim 1, further comprising a user end, wherein the user end is in communication connection with the management server, an intelligent ammeter is arranged on the input end of the power supply unit, and the intelligent ammeter is connected with the main control unit through an RS232 communication circuit.
3. The direct current charging pile based on the internet of things according to claim 2, wherein the man-machine interaction unit is connected with the main control unit through an RS485 communication circuit, and the man-machine interaction unit adopts a touch screen.
4. The direct current charging pile based on the internet of things according to claim 2, further comprising a card swiping module, wherein the card swiping module is connected with the main control unit through an RS485 communication circuit, and the protection and monitoring unit is connected with the main control unit through the RS485 communication circuit.
5. The direct current charging pile based on the internet of things according to claim 2, wherein the power supply unit and the main control unit are connected through a CAN bus.
6. The direct current charging pile based on the internet of things according to claim 2, wherein the main control unit is connected with the management server through a network.
7. The direct current charging pile based on the internet of things according to claim 1, wherein the resistance value of the resistor R220 is 100kΩ, the resistance value of the resistor R221 is 100kΩ, the resistance value of the resistor R222 is 100kΩ, the resistance value of the resistor R223 is 100kΩ, the resistance value of the resistor R224 is 200kΩ, the resistance value of the resistor R225 is 200kΩ, the resistance value of the resistor R226 is 10kΩ, the resistance value of the resistor R227 is 10kΩ, the resistance value of the resistor R228 is 20kΩ, the resistance value of the resistor R229 is 10kΩ, the resistance value of the resistor R230 is 10kΩ, the resistance value of the resistor R231 is 10kΩ, and the resistance value of the resistor R232 is 10kΩ.
8. The dc charging pile based on the internet of things according to claim 1, wherein the capacitance value of the capacitor C124 is 220pF, the capacitance value of the capacitor C125 is 220pF, and the capacitance value of the capacitor C126 is 220pF.
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| CN109624770A (en) * | 2018-12-18 | 2019-04-16 | 甘肃宜轩科技有限公司 | A kind of charging system of automatic identification vehicle |
| CN112895965B (en) * | 2019-04-26 | 2024-01-05 | 上海电享信息科技有限公司 | Implementation method of intelligent charging pile active initiation type charging pile communication protocol |
| CN110239387B (en) * | 2019-07-22 | 2020-12-01 | 萍乡学院 | An internet-based car charging system |
| CN110422073A (en) * | 2019-08-16 | 2019-11-08 | 平湖新纳通信技术有限公司 | Intelligent charging detection device and method thereof |
| CN112884985A (en) * | 2021-03-17 | 2021-06-01 | 长春捷翼汽车零部件有限公司 | Electric energy charging device and new energy charging equipment |
| CN113546352A (en) * | 2021-07-28 | 2021-10-26 | 兰州海红技术股份有限公司 | A DC charging pile with fire detection and fire extinguishing device |
| CN114495362B (en) * | 2022-03-10 | 2026-02-03 | 黑龙江省电工仪器仪表工程技术研究中心有限公司 | Direct current fills electric pile |
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| JP2010114988A (en) * | 2008-11-05 | 2010-05-20 | Denso Corp | Vehicle charger device and vehicle charging system |
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| CN105048562A (en) * | 2015-08-09 | 2015-11-11 | 安徽普为智能科技有限责任公司 | Direct-current charging pile |
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| CN106712150A (en) * | 2015-11-17 | 2017-05-24 | 重庆瑞升康博电气有限公司 | Electric vehicle alternating current intelligent charging pile |
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