CN104218642A - Centralized control type electric vehicle charging system - Google Patents
Centralized control type electric vehicle charging system Download PDFInfo
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- CN104218642A CN104218642A CN201410439704.9A CN201410439704A CN104218642A CN 104218642 A CN104218642 A CN 104218642A CN 201410439704 A CN201410439704 A CN 201410439704A CN 104218642 A CN104218642 A CN 104218642A
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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
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Abstract
A centralized control type electric vehicle charging system comprises a centralized control cabinet, a centralized controller is arranged in the centralized control cabinet, a monitoring system arranged in the centralized control cabinet is connected to a CN2 interface of the centralized controller, a LCD (liquid crystal display) screen arranged on the centralized control cabinet is connected to a CN1 interface of the centralized controller, and one end of a controller of each of a plurality of charging pile control circuits arranged in the centralized control cabinet is connected with a CAN (controller area network) field bus interface of the centralized controller. The centralized control type electric vehicle charging system has the advantages that by the aid of the structure, a mode that the centralized controller controls all charging piles uniformly is adopted, individual circuit arrangement on each charging pile is not required any longer, only charging cables are arranged on the charging piles, and thereby the design of the charging piles is simplified extremely, and the cost for the charging piles is reduced greatly.
Description
Technical field:
The present invention relates to a kind of centralized-control type charging system for electric automobile.
Background technology:
Along with low-carbon economy becomes the theme of China's economic development, electric automobile, as new forms of energy strategy and the important component part of intelligent grid, will become the emphasis that Chinese Automobile Industry ' and energy industry from now on develop.Ev industry is a systematic engineering of business, and charging system for electric automobile is one of its key link.
At present, in charging system for electric automobile on the market, each charging pile is provided with independently control device, the circuit of each charging pile is independently.Charging pile needs to carry out with main website backstage the charge function that information interaction could realize self at work, adopt the charging system set up in this way and there is many shortcomings: in each charging pile, need to install independently control circuit, thus cause the cost of single charging pile higher; The restriction of information interaction is needed to carry out with main website backstage owing to being subject to charging pile, charging pile mounting distance main website crosses on backstage and far can cause information distortion, affect the normal work of charging pile, seriously limit the installation quantity of charging pile, make troubles to user's stopping for charging, meanwhile, also cause the wiring between charging pile and main website backstage complicated, considerably increase the installation cost of charging system for electric automobile; In maintenance process, workman needs the shell opening each charging pile to carry out circuit maintenance, and maintenance process is complicated, and workman's workload is large, and efficiency is lower.
Summary of the invention:
The invention provides a kind of centralized-control type charging system for electric automobile, its reasonable in design, adopt the unified mode controlling all charging piles of Centralized Controller, no longer need to arrange circuit separately on each charging pile, charging pile only arranges charge cable, the pole simplified design of this charging pile, greatly reduces the cost of charging pile; Simultaneously, the mutual of the information of carrying out no longer is needed between charging pile and main website backstage, the installation site of charging pile is no longer subject to the restriction that information transmits distortion, more charging pile can be expanded, be convenient for people to stopping for charging, meanwhile, easy to operate when installing and connect up, reduce the installation cost of charging system of electric powercar; Due to charging pile not existing circuit, regularly charging pile is overhauled without the need to workman, only need regularly to overhaul Centralized Controller, greatly reduce the workload of workman, improve operating efficiency, solve problems of the prior art.
The present invention for solving the problems of the technologies described above adopted technical scheme is: a kind of centralized-control type charging system for electric automobile, comprise a centralized control cabinet, a Centralized Controller is provided with in centralized control cabinet, one supervisory control system be arranged in centralized control cabinet is connected on the CN2 interface of Centralized Controller, one is arranged on centralized control LCD liquid crystal display screen is cashier's office in a shop connected on the CN1 interface of Centralized Controller, several one end being arranged on the controller of the charging pile control circuit in centralized control cabinet are all connected with the CAN field-bus interface of Centralized Controller, the other end of charging pile control circuit is all connected with the charging gun on the charging pile being distributed in parking area by charge cable, the outer wall of each charging pile is equipped with a Quick Response Code uniquely corresponding with it,
Described Centralized Controller is communicated with each road charging pile control circuit by CAN fieldbus, obtain operating state and the electric parameter of each charging pile, by the mode of network service, the operating state of each charging pile and electric parameter are sent to supervisory control system;
Described supervisory control system, after the operating state receiving each charging pile that Centralized Controller sends and electric parameter, carries out analytical calculation to data, and control command is issued to Centralized Controller by the mode of network service;
Described LCD liquid crystal display screen is for showing electric parameter and the operating state of each charging pile.
Described charging pile control circuit comprises a controller, controller and PWM produce circuit and are connected,-12V the voltage controling end that-12V voltage output end and the PWM of one 12V voltage generation circuit produce circuit is connected, + 12V the voltage controling end that+12V voltage output end and the PWM of 12V voltage generation circuit produce circuit is connected, the output that input and the PWM of one signal acquisition circuit produce circuit is connected, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charging cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards holds the CP signal receiving end of the output and electric rifle that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, the input of one ic for energy metering is connected with the electrical energy inputs of relay, the output of ic for energy metering is connected with controller.
Described controller is STM32F103VET6_1 control chip, PD0 with the PD1 pin of controller is connected with the CAN field-bus interface of Centralized Controller, the input that CPPWM pin and the PWM of controller produce circuit is connected, the CPAD pin of controller is connected with the output of signal acquisition circuit, the CCAD pin of controller is connected with the output of cable capacity testing circuit, PB0 with the PB1 pin of controller is connected with relay drive circuit, TX2 with the DX2 pin of controller is connected with the output of ic for energy metering.
Described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, resistance R7 is connected with between the VIN pin of 12V voltage generation circuit control chip and EN pin, VIN pin is connected with the electric capacity C31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, the link of resistance R7 and VIN pin, electric capacity C31 be all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D5 with the double diode D4 of parallel connection, by No. 3 pin serial connection one electric capacity C25 of double diode D4 on double diode D4 branch road, by No. 3 pin serial connection one electric capacity C30 of double diode D5 on the branch road of double diode D5, the one parallel end connection ground of the resistance R5 after parallel connection, electric capacity C27 and electric capacity C28, the other end is connected with No. 1 pin of double diode D4, it is the output of-12V voltage, and No. 2 pin ground connection of double diode D4 are arranged, No. 1 pin ground connection of double diode D5 is arranged, electric capacity C32 in parallel is that a parallel connected end of the resistance R6 of 432k Ω is connected with No. 2 pins of double diode D5 with resistance, it is the output of+12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, electric capacity C32 after parallel connection and resistance are be connected with the GND pin of 12V voltage generation circuit control chip after resistance R8 that resistance R6 and a resistance of 432k Ω is 49.9k Ω connects, electric capacity C33 in parallel and electric capacity C34 is connected with between No. 2 pins and the GND pin of 12V voltage generation circuit control chip of double diode D5, the GND pin of 12V voltage generation circuit control chip, resistance is resistance R8 and the GND pin link of 49.9k Ω, resistance is the resistance R6 of 432k Ω and GND pin link and electric capacity C33 and the equal ground connection of GND pin link.
Described PWM produces circuit and comprises a PWM generation circuit control chip, PWM produces the VF-pin of circuit control chip and is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R30, electric capacity C45 is in series with between VCC pin and GND pin, electric capacity C45 is connected with-12V the output of 12V voltage generation circuit with GND pin with the link of GND pin, resistance R32 parallel with one another and resistance R33 is connected with between VCC pin and VO pin, VCC pin, the link of resistance R32 and VCC pin, resistance R33 is all connected with+12V the output of 12V voltage generation circuit with the link of VCC pin with electric capacity C45 with the link of VCC pin, VO pin is connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 is connected with+12V the output of 12V voltage generation circuit, the collector electrode of PNP triode Q5 is connected with-12V the output of 12V voltage generation circuit, connect after the emitter of NPN triode Q3 is connected with the emitter of PNP triode Q5 a resistance R35, the other end of resistance R35 is the output that PWM produces circuit.
Described cable capacity testing circuit comprises a resistance R45, one end and the resistance R46 of resistance R45 are in series, another termination 5V voltage of resistance R45, one or two binding post is connected between R45 and R46, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post is produced on the output of circuit and charging gun by wire and PWM is connected, and No. 2 binding posts of two binding posts are connected by the CCAD pin of wire and controller and charge cable.
Also comprise LED circuit, LED circuit comprises red light control circuit, green light control circuit and blue lamp control circuit; Red light control circuit is connected with the PA4 pin of controller, and green light control circuit is connected with the PA5 pin of controller, and blue lamp control circuit is connected with the PA6 pin of controller
Described relay drive circuit comprises relay drive circuit N and relay drive circuit L, relay drive circuit N comprises a photoelectrical coupler U7, No. 1 pin of photoelectrical coupler U7 input is connected with supply voltage, No. 2 pins are connected with the PB0 pin of controller after connecting with a resistance R9, be connected with the base stage of a NPN triode Q2 after No. 4 pins of photoelectrical coupler U7 output are connected with a resistance R10, a resistance R12 is connected between resistance R10 and the emitter of NPN triode Q2, the grounded emitter of NPN triode Q2 is arranged, the collector electrode of NPN triode Q2 is connected with a drive end of relay K Ω 2, another drive end of relay K Ω 2 is connected after a resistance R4 and is connected with photoelectrical coupler U7 output No. 3 pins, No. 3 pins of photoelectrical coupler U7 output are connected with 12V supply voltage, relay drive circuit L comprises a photoelectrical coupler U6, No. 1 pin of photoelectrical coupler U6 input is connected with supply voltage, No. 2 pins are connected with the PB1 pin of controller after connecting with a resistance R51, be connected with the base stage of a NPN triode Q1 after No. 4 pins of photoelectrical coupler U6 output are connected with a resistance R51, a resistance R11 is connected between the emitter of R51 and NPN triode Q1, the grounded emitter of NPN triode Q1 is arranged, the collector electrode of NPN triode Q1 is connected with a drive end of relay K Ω 1, another drive end of relay K Ω 1 is connected after a resistance R3 and is connected with photoelectrical coupler U6 output No. 3 pins, No. 3 pins of photoelectrical coupler U6 output are connected with 12V supply voltage
The present invention adopts said structure, adopt the unified mode controlling all charging piles of Centralized Controller, no longer need to arrange circuit separately on each charging pile, charging pile only arranges charge cable, the pole simplified design of this charging pile, greatly reduces the cost of charging pile; Simultaneously, the mutual of the information of carrying out no longer is needed between charging pile and main website backstage, the installation site of charging pile is no longer subject to the restriction that information transmits distortion, more charging pile can be expanded, be convenient for people to stopping for charging, meanwhile, easy to operate when installing and connect up, reduce the installation cost of charging system of electric powercar; Due to charging pile not existing circuit, regularly charging pile is overhauled without the need to workman, only need regularly to overhaul Centralized Controller, greatly reduce the workload of workman, improve operating efficiency.In charging pile circuit, signalization Acquisition Circuit, PWM produce circuit and cable capacity detection circuit, whether signal acquisition circuit and PWM generation circuit can detect charge cable and be connected correctly with electric automobile, when after exact connect ion, charging pile opens charging again, avoid charging pile just to carry out charging when not being connected correct with cable and cause charging accident, eliminate potential safety hazard; In addition, PWM produces the charging current notice electric motor car that charging pile can be provided by the form of pwm pulse by circuit, if the charging current that charging pile provides is excessive, electric automobile does not just accept charging, avoids the generation of security incident.
Accompanying drawing illustrates:
Fig. 1 is theory diagram of the present invention.
Fig. 2 is the circuit diagram of 12V voltage generation circuit of the present invention.
Fig. 3 is the circuit diagram of pwm signal generation circuit of the present invention.
Fig. 4 is the circuit diagram of cable capacity testing circuit of the present invention.
Fig. 5 is the circuit diagram of LED circuit circuit of the present invention.
Fig. 6 is the circuit diagram of relay drive circuit N of the present invention.
Fig. 7 is the circuit diagram of relay drive circuit L of the present invention.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, below by embodiment, and in conjunction with its accompanying drawing, the present invention will be described in detail.
As shown in figs. 1-7, a kind of centralized-control type charging system for electric automobile, comprise a centralized control cabinet, a Centralized Controller is provided with in centralized control cabinet, one supervisory control system be arranged in centralized control cabinet is connected on the CN2 interface of Centralized Controller, one is arranged on centralized control LCD liquid crystal display screen is cashier's office in a shop connected on the CN1 interface of Centralized Controller, several one end being arranged on the controller of the charging pile control circuit in centralized control cabinet are all connected with the CAN field-bus interface of Centralized Controller, the other end of charging pile control circuit is all connected with the charging gun on the charging pile being distributed in parking area by charge cable, the outer wall of each charging pile is equipped with a Quick Response Code uniquely corresponding with it,
Described Centralized Controller is communicated with each road charging pile control circuit by CAN fieldbus, obtain operating state and the electric parameter of each charging pile, by the mode of network service, the operating state of each charging pile and electric parameter are sent to supervisory control system;
Described supervisory control system, after the operating state receiving each charging pile that Centralized Controller sends and electric parameter, carries out analytical calculation to data, and control command is issued to Centralized Controller by the mode of network service;
Described LCD liquid crystal display screen is for showing electric parameter and the operating state of each charging pile.
Described charging pile control circuit comprises a controller, controller and PWM produce circuit and are connected,-12V the voltage controling end that-12V voltage output end and the PWM of one 12V voltage generation circuit produce circuit is connected, + 12V the voltage controling end that+12V voltage output end and the PWM of 12V voltage generation circuit produce circuit is connected, the output that input and the PWM of one signal acquisition circuit produce circuit is connected, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charging cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards holds the CP signal receiving end of the output and electric rifle that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, the input of one ic for energy metering is connected with the electrical energy inputs of relay, the output of ic for energy metering is connected with controller.
Described controller is STM32F103VET6_1 control chip, PD0 with the PD1 pin of controller is connected with the CAN field-bus interface of Centralized Controller, the input that CPPWM pin and the PWM of controller produce circuit is connected, the CPAD pin of controller is connected with the output of signal acquisition circuit, the CCAD pin of controller is connected with the output of cable capacity testing circuit, PB0 with the PB1 pin of controller is connected with relay drive circuit, TX2 with the DX2 pin of controller is connected with the output of ic for energy metering.
Described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, resistance R7 is connected with between the VIN pin of 12V voltage generation circuit control chip and EN pin, VIN pin is connected with the electric capacity C31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, the link of resistance R7 and VIN pin, electric capacity C31 be all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D5 with the double diode D4 of parallel connection, by No. 3 pin serial connection one electric capacity C25 of double diode D4 on double diode D4 branch road, by No. 3 pin serial connection one electric capacity C30 of double diode D5 on the branch road of double diode D5, the one parallel end connection ground of the resistance R5 after parallel connection, electric capacity C27 and electric capacity C28, the other end is connected with No. 1 pin of double diode D4, it is the output of-12V voltage, and No. 2 pin ground connection of double diode D4 are arranged, No. 1 pin ground connection of double diode D5 is arranged, electric capacity C32 in parallel is that a parallel connected end of the resistance R6 of 432k Ω is connected with No. 2 pins of double diode D5 with resistance, it is the output of+12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, electric capacity C32 after parallel connection and resistance are be connected with the GND pin of 12V voltage generation circuit control chip after resistance R8 that resistance R6 and a resistance of 432k Ω is 49.9k Ω connects, electric capacity C33 in parallel and electric capacity C34 is connected with between No. 2 pins and the GND pin of 12V voltage generation circuit control chip of double diode D5, the GND pin of 12V voltage generation circuit control chip, resistance is resistance R8 and the GND pin link of 49.9k Ω, resistance is the resistance R6 of 432k Ω and GND pin link and electric capacity C33 and the equal ground connection of GND pin link.
Described PWM produces circuit and comprises a PWM generation circuit control chip, PWM produces the VF-pin of circuit control chip and is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R30, electric capacity C45 is in series with between VCC pin and GND pin, electric capacity C45 is connected with-12V the output of 12V voltage generation circuit with GND pin with the link of GND pin, resistance R32 parallel with one another and resistance R33 is connected with between VCC pin and VO pin, VCC pin, the link of resistance R32 and VCC pin, resistance R33 is all connected with+12V the output of 12V voltage generation circuit with the link of VCC pin with electric capacity C45 with the link of VCC pin, VO pin is connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 is connected with+12V the output of 12V voltage generation circuit, the collector electrode of PNP triode Q5 is connected with-12V the output of 12V voltage generation circuit, connect after the emitter of NPN triode Q3 is connected with the emitter of PNP triode Q5 a resistance R35, the other end of resistance R35 is output.
Described cable capacity testing circuit comprises a resistance R45, one end and the resistance R46 of resistance R45 are in series, another termination 5V voltage of resistance R45, one or two binding post is connected between R45 and R46, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post is produced on the CP signal output part of circuit and charging gun by wire and PWM is connected, and No. 2 binding posts of two binding posts are connected by the CCAD pin of wire and controller and charge cable.
Also comprise LED circuit, LED circuit comprises red light control circuit, green light control circuit and blue lamp control circuit; Red light control circuit is connected with the PA4 pin of controller, and green light control circuit is connected with the PA5 pin of controller, and blue lamp control circuit is connected with the PA6 pin of controller.
Described relay drive circuit comprises relay drive circuit N and relay drive circuit L, relay drive circuit N comprises a photoelectrical coupler U7, No. 1 pin of photoelectrical coupler U7 input is connected with supply voltage, No. 2 pins are connected with the PB0 pin of controller after connecting with a resistance R9, be connected with the base stage of a NPN triode Q2 after No. 4 pins of photoelectrical coupler U7 output are connected with a resistance R10, a resistance R12 is connected between resistance R10 and the emitter of NPN triode Q2, the grounded emitter of NPN triode Q2 is arranged, the collector electrode of NPN triode Q2 is connected with a drive end of relay K Ω 2, another drive end of relay K Ω 2 is connected after a resistance R4 and is connected with photoelectrical coupler U7 output No. 3 pins, No. 3 pins of photoelectrical coupler U7 output are connected with 12V supply voltage, relay drive circuit L comprises a photoelectrical coupler U6, No. 1 pin of photoelectrical coupler U6 input is connected with supply voltage, No. 2 pins are connected with the PB1 pin of controller after connecting with a resistance R51, be connected with the base stage of a NPN triode Q1 after No. 4 pins of photoelectrical coupler U6 output are connected with a resistance R51, a resistance R11 is connected between the emitter of R51 and NPN triode Q1, the grounded emitter of NPN triode Q1 is arranged, the collector electrode of NPN triode Q1 is connected with a drive end of relay K Ω 1, another drive end of relay K Ω 1 is connected after a resistance R3 and is connected with photoelectrical coupler U6 output No. 3 pins, No. 3 pins of photoelectrical coupler U6 output are connected with 12V supply voltage.
User arrives charging pile, by hand-held mobile terminal, logs in system, and the Quick Response Code on scanning charging pile, scans successful defensive position and hold mobile terminal and Centralized Controller completes communication, set up the incidence relation of charging pile and user account.User independently can open charging service, is completed charging and the clearing task of charging service by Centralized Controller and supervisory control system, and user can pass through hand-held mobile terminal real time inspection information on services.
When after the Quick Response Code on the current charging pile outer wall of scanning input, connect with Centralized Controller, Centralized Controller is connected with corresponding charging pile control circuit by CAN fieldbus.
Before the charging gun of charging pile is connected with electric automobile, the CPPWM pin of the controller of charging pile control circuit produces circuit to PWM to be continued to send high level, now PWM produces the CP signal input part of circuit is+12V, voltage signal is sent to controller by the signal acquisition circuit be connected with CP signal input part, controller receives+12V voltage signal, judge that current state is not-connected status, after charging gun is connected with electric automobile, if connect correct, then PWM produces after the output of circuit is connected with No. 1 binding post of the binding post of two in cable capacity testing circuit and is connected with electric automobile coupler, resistance on electric automobile coupler is increased to PWM and produces in the loop of circuit, now the voltage of resistance R35 reduces, voltage signal is sent to controller by the signal acquisition circuit be connected with CP signal input part, controller receives lower voltage signal, just can judge that current state is charging gun and electric automobile exact connect ion, when charging pile and electric automobile exact connect ion, controller controls green light flicker by green light control circuit.
Sentence after current state be charging gun and electric automobile exact connect ion at controller, connection signal is sent to Centralized Controller by CAN fieldbus by controller, the connection signal of current charging pile is sent to supervisory control system by CN2 interface by Centralized Controller, after supervisory control system obtains the connection signal of current charging pile, control signal is sent to controller by Centralized Controller, PB0 and the PB1 pin of controller is changed to low level, the photoelectrical coupler U7 be connected with PB0 with PB1 pin and U6 conducting, NPN triode Q2 in circuit and NPN triode Q1 conducting, now relay obtains electric switch adhesive, charging pile starts to power to electric automobile.After charging pile starts to power to electric automobile, controller controls green light Chang Liang by green light control circuit, and ic for energy metering starts to calculate electric energy.
After charging pile starts to power to electric automobile, the cable resistance be connected with No. 2 binding posts of the binding post of two in cable capacity testing circuit is linked in cable capacity testing circuit, now the voltage of CCAD point raises, after controller receives the signal of CCAD point voltage rising, the specification of cable is judged by voltage signal, after controller receives CCAD point voltage signal, the lowest high-current value provided by charging pile according to concrete cable specification produces circuit by CPPWM pin to PWM and sends continuous low and high level, PWM produces circuit after receiving continuous low and high level, CP signal input part produces continuously ± 12V pulse signal, electric automobile receiving ± 12V pulse signal after, the size of charging current can be learnt according to the duty ratio of ± 12V pulse signal, if the rated current of electric automobile is more than or equal to the electric current that charging pile provides, then the vehicle-mounted charge of Rechargeable vehicle starts to carry out charging work, if electric current is larger, exceed the rated current of electric automobile, then electric automobile does not accept charging.
Resistance on electric automobile coupler is no longer increased to PWM and produces in the loop of circuit, now the voltage resume of resistance R35 is to original numerical value, voltage signal is sent to controller by signal acquisition circuit, controller receives the voltage signal of R35, can judge that current state is that charging pile is connected with electric automobile is incorrect, controller controls red light Chang Liang by red light control circuit.
When after relay conducting, ic for energy metering starts metering charging institute power consumption energy, and electric flux is sent to controller, electric flux signal is sent to Centralized Controller by CAN fieldbus by controller, electric flux signal is sent to supervisory control system by Centralized Controller, and supervisory control system is deducted fees to user according to current user information.
In the course of the work, the electric parameter signal of each charging pile received is shown by LCD liquid crystal display screen by Centralized Controller.
Adopt centralized-control type charging system for electric automobile of the present invention, adopt the unified mode controlling all charging piles of Centralized Controller, no longer need to arrange circuit separately on each charging pile, charging pile only arranges charge cable, the pole simplified design of this charging pile, greatly reduces the cost of charging pile; Simultaneously, the mutual of the information of carrying out no longer is needed between charging pile and main website backstage, the installation site of charging pile is no longer subject to the restriction that information transmits distortion, more charging pile can be expanded, be convenient for people to stopping for charging, meanwhile, easy to operate when installing and connect up, reduce the installation cost of charging system of electric powercar; Due to charging pile not existing circuit, regularly charging pile is overhauled without the need to workman, only need regularly to overhaul Centralized Controller, greatly reduce the workload of workman, improve operating efficiency.In charging pile circuit, signalization Acquisition Circuit, PWM produce circuit and cable capacity detection circuit, whether signal acquisition circuit and PWM generation circuit can detect charge cable and be connected correctly with electric automobile, when after exact connect ion, charging pile opens charging again, avoid charging pile just to carry out charging when not being connected correct with cable and cause charging accident, eliminate potential safety hazard; In addition, PWM produces the charging current notice electric motor car that charging pile can be provided by the form of pwm pulse by circuit, if the charging current that charging pile provides is excessive, electric automobile does not just accept charging, avoids the generation of security incident.
Above-mentioned embodiment can not as limiting the scope of the invention, and for those skilled in the art, any alternate modification make embodiment of the present invention or conversion all drop in protection scope of the present invention.
The present invention does not describe part in detail, is the known technology of those skilled in the art of the present technique.
Claims (8)
1. a centralized-control type charging system for electric automobile, it is characterized in that: comprise a centralized control cabinet, a Centralized Controller is provided with in centralized control cabinet, one supervisory control system be arranged in centralized control cabinet is connected on the CN2 interface of Centralized Controller, one is arranged on centralized control LCD liquid crystal display screen is cashier's office in a shop connected on the CN1 interface of Centralized Controller, several one end being arranged on the controller of the charging pile control circuit in centralized control cabinet are all connected with the CAN field-bus interface of Centralized Controller, the other end of charging pile control circuit is all connected with the charging gun on the charging pile being distributed in parking area by charge cable, the outer wall of each charging pile is equipped with a Quick Response Code uniquely corresponding with it,
Described Centralized Controller is communicated with each road charging pile control circuit by CAN fieldbus, obtain operating state and the electric parameter of each charging pile, by the mode of network service, the operating state of each charging pile and electric parameter are sent to supervisory control system;
Described supervisory control system, after the operating state receiving each charging pile that Centralized Controller sends and electric parameter, carries out analytical calculation to data, and control command is issued to Centralized Controller by the mode of network service;
Described LCD liquid crystal display screen is for showing electric parameter and the operating state of each charging pile.
2. a kind of centralized-control type charging system for electric automobile according to claim 1, it is characterized in that: described charging pile control circuit comprises a controller, controller and PWM produce circuit and are connected,-12V the voltage controling end that-12V voltage output end and the PWM of one 12V voltage generation circuit produce circuit is connected, + 12V the voltage controling end that+12V voltage output end and the PWM of 12V voltage generation circuit produce circuit is connected, the output that input and the PWM of one signal acquisition circuit produce circuit is connected, controller is connected with the output of signal acquisition circuit, the input of one cable capacity testing circuit is connected with charging cable, controller is connected with the output of cable capacity testing circuit, the pwm signal of cable capacity testing circuit forwards holds the CP signal receiving end of the output and electric rifle that produce circuit with PWM to be respectively connected, controller is connected with a relay drive circuit, the input of one ic for energy metering is connected with the electrical energy inputs of relay, the output of ic for energy metering is connected with controller.
3. a kind of centralized-control type charging system for electric automobile according to claim 2, it is characterized in that: described controller is STM32F103VET6_1 control chip, PD0 with the PD1 pin of controller is connected with the CAN field-bus interface of Centralized Controller, the input that CPPWM pin and the PWM of controller produce circuit is connected, the CPAD pin of controller is connected with the output of signal acquisition circuit, the CCAD pin of controller is connected with the output of cable capacity testing circuit, PB0 with the PB1 pin of controller is connected with relay drive circuit, TX2 with the DX2 pin of controller is connected with the output of ic for energy metering.
4. a kind of centralized-control type charging system for electric automobile according to claim 2, it is characterized in that: described 12V voltage generation circuit comprises a 12V voltage generation circuit control chip, resistance R7 is connected with between the VIN pin of 12V voltage generation circuit control chip and EN pin, VIN pin is connected with the electric capacity C31 of ground connection, between VIN pin and SW pin, be connected with inductance L 5, VIN pin, the link of resistance R7 and VIN pin, electric capacity C31 be all connected with 5V power supply with the link of VIN pin with inductance L 5 with the link of VIN pin, the SW pin of 12V voltage generation circuit control chip is connected with a parallel connected end of double diode D5 with the double diode D4 of parallel connection, by No. 3 pin serial connection one electric capacity C25 of double diode D4 on double diode D4 branch road, by No. 3 pin serial connection one electric capacity C30 of double diode D5 on the branch road of double diode D5, the one parallel end connection ground of the resistance R5 after parallel connection, electric capacity C27 and electric capacity C28, the other end is connected with No. 1 pin of double diode D4, it is the output of-12V voltage, and No. 2 pin ground connection of double diode D4 are arranged, No. 1 pin ground connection of double diode D5 is arranged, electric capacity C32 in parallel is that a parallel connected end of the resistance R6 of 432k Ω is connected with No. 2 pins of double diode D5 with resistance, it is the output of+12V voltage, the other end is connected with the FB pin of 12V voltage generation circuit control chip, electric capacity C32 after parallel connection and resistance are be connected with the GND pin of 12V voltage generation circuit control chip after resistance R8 that resistance R6 and a resistance of 432k Ω is 49.9k Ω connects, electric capacity C33 in parallel and electric capacity C34 is connected with between No. 2 pins and the GND pin of 12V voltage generation circuit control chip of double diode D5, the GND pin of 12V voltage generation circuit control chip, resistance is resistance R8 and the GND pin link of 49.9k Ω, resistance is the resistance R6 of 432k Ω and GND pin link and electric capacity C33 and the equal ground connection of GND pin link.
5. a kind of centralized-control type charging system for electric automobile according to claim 3, it is characterized in that: described PWM produces circuit and comprises a PWM generation circuit control chip, PWM produces the VF-pin of circuit control chip and is connected with the CPPWM pin of controller, VF+ pin is connected with power supply after being connected with a resistance R30, electric capacity C45 is in series with between VCC pin and GND pin, electric capacity C45 is connected with-12V the output of 12V voltage generation circuit with GND pin with the link of GND pin, resistance R32 parallel with one another and resistance R33 is connected with between VCC pin and VO pin, VCC pin, the link of resistance R32 and VCC pin, resistance R33 is all connected with+12V the output of 12V voltage generation circuit with the link of VCC pin with electric capacity C45 with the link of VCC pin, VO pin is connected with NPN triode Q3 parallel with one another and PNP triode Q5, the collector electrode of NPN triode Q3 is connected with+12V the output of 12V voltage generation circuit, the collector electrode of PNP triode Q5 is connected with-12V the output of 12V voltage generation circuit, connect after the emitter of NPN triode Q3 is connected with the emitter of PNP triode Q5 a resistance R35, the other end of resistance R35 is the output that PWM produces circuit.
6. a kind of centralized-control type charging system for electric automobile according to claim 3, it is characterized in that: described cable capacity testing circuit comprises a resistance R45, one end and the resistance R46 of resistance R45 are in series, another termination 5V voltage of resistance R45, one or two binding post is connected between R45 and R46, No. 1 binding post of two binding posts is that pwm signal forwards end, the CP signal receiving end that No. 1 binding post is produced on the output of circuit and charging gun by wire and PWM is connected, No. 2 binding posts of two binding posts are connected by the CCAD pin of wire and controller and charge cable.
7. a kind of centralized-control type charging system for electric automobile according to claim 3, is characterized in that: also comprise LED circuit, and LED circuit comprises red light control circuit, green light control circuit and blue lamp control circuit; Red light control circuit is connected with the PA4 pin of controller, and green light control circuit is connected with the PA5 pin of controller, and blue lamp control circuit is connected with the PA6 pin of controller
8. a kind of centralized-control type charging system for electric automobile according to claim 3, it is characterized in that: described relay drive circuit comprises relay drive circuit N and relay drive circuit L, relay drive circuit N comprises a photoelectrical coupler U7, No. 1 pin of photoelectrical coupler U7 input is connected with supply voltage, No. 2 pins are connected with the PB0 pin of controller after connecting with a resistance R9, be connected with the base stage of a NPN triode Q2 after No. 4 pins of photoelectrical coupler U7 output are connected with a resistance R10, a resistance R12 is connected between resistance R10 and the emitter of NPN triode Q2, the grounded emitter of NPN triode Q2 is arranged, the collector electrode of NPN triode Q2 is connected with a drive end of relay K Ω 2, another drive end of relay K Ω 2 is connected after a resistance R4 and is connected with photoelectrical coupler U7 output No. 3 pins, No. 3 pins of photoelectrical coupler U7 output are connected with 12V supply voltage, relay drive circuit L comprises a photoelectrical coupler U6, No. 1 pin of photoelectrical coupler U6 input is connected with supply voltage, No. 2 pins are connected with the PB1 pin of controller after connecting with a resistance R51, be connected with the base stage of a NPN triode Q1 after No. 4 pins of photoelectrical coupler U6 output are connected with a resistance R51, a resistance R11 is connected between the emitter of R51 and NPN triode Q1, the grounded emitter of NPN triode Q1 is arranged, the collector electrode of NPN triode Q1 is connected with a drive end of relay K Ω 1, another drive end of relay K Ω 1 is connected after a resistance R3 and is connected with photoelectrical coupler U6 output No. 3 pins, No. 3 pins of photoelectrical coupler U6 output are connected with 12V supply voltage.
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| CN105743192A (en) * | 2016-04-01 | 2016-07-06 | 江苏万帮德和新能源科技有限公司 | Control circuit and control method for internet intelligent AC charging pile |
| CN106815934A (en) * | 2016-12-12 | 2017-06-09 | 国网北京市电力公司 | Billing control method and charging controller |
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| CN107688306A (en) * | 2016-08-04 | 2018-02-13 | 重庆节节高科技发展有限公司 | A kind of remote control module for safety means detection |
| CN108237945A (en) * | 2018-03-15 | 2018-07-03 | 重庆国翰能源发展有限公司 | A kind of alternating-current charging pile, electric vehicle information interaction system |
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| CN109752615A (en) * | 2019-01-21 | 2019-05-14 | 福建工程学院 | A kind of automobile charging pile monitoring and maintenance method |
| CN109872145A (en) * | 2019-01-29 | 2019-06-11 | 中智沃达(北京)电力科技有限公司 | Charging field intelligent management system based on CNN convolutional neural networks |
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| CN108237945A (en) * | 2018-03-15 | 2018-07-03 | 重庆国翰能源发展有限公司 | A kind of alternating-current charging pile, electric vehicle information interaction system |
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| CN109872145A (en) * | 2019-01-29 | 2019-06-11 | 中智沃达(北京)电力科技有限公司 | Charging field intelligent management system based on CNN convolutional neural networks |
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| CN104218642B (en) | 2017-02-22 |
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