CN214775470U - Direct current fills electric pile control system - Google Patents

Direct current fills electric pile control system Download PDF

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Publication number
CN214775470U
CN214775470U CN202120296453.9U CN202120296453U CN214775470U CN 214775470 U CN214775470 U CN 214775470U CN 202120296453 U CN202120296453 U CN 202120296453U CN 214775470 U CN214775470 U CN 214775470U
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China
Prior art keywords
circuit
power
control system
communication
communication circuit
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Application number
CN202120296453.9U
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Chinese (zh)
Inventor
刘思奇
徐开凯
黄镇涛
侯班超
邓崇超
杨文彬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chekuqihao New Energy Technology Shenzhen Co ltd
Shenzhen Kuchong Technology Co.,Ltd.
Original Assignee
Hainan Garage Electric Pile Technology Co ltd
Shenzhen Garage Electric Pile Technology Co ltd
Chekuqihao New Energy Technology Shenzhen Co ltd
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Application filed by Hainan Garage Electric Pile Technology Co ltd, Shenzhen Garage Electric Pile Technology Co ltd, Chekuqihao New Energy Technology Shenzhen Co ltd filed Critical Hainan Garage Electric Pile Technology Co ltd
Priority to CN202120296453.9U priority Critical patent/CN214775470U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/12Electric charging stations
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/16Information or communication technologies improving the operation of electric vehicles

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses a direct current fills electric pile control system, including master control circuit, first DCDC keeps apart the power, second DCDC keeps apart the power, and a plurality of inputs of being connected with master control circuit respectively, insulating detection circuitry, CAN communication circuit, voltage detection circuit, relay control circuit, the rifle temperature detection circuitry that charges, on-vehicle BMS circuit, charging circuit and first power, first power provides operating voltage for master control circuit, master control circuit passes through CAN communication circuit respectively with on-vehicle BMS circuit, charging circuit and first DCDC keep apart the power and are connected, the break-make of relay control circuit control insulating detection circuitry and on-vehicle BMS circuit, second DCDC isolation power carries out the step-down to keep apart for the second power for first power. The method adopts a mode of isolating the power supply, and isolates the digital ground from the power supply ground, so that the digital signal ground becomes stable and safe.

Description

Direct current fills electric pile control system
Technical Field
The utility model relates to a fill the electric pile field, especially relate to a direct current fills electric pile control system.
Background
With the continuous exploration and development of the new energy field, the new energy electric automobile field shows a vigorous vigor. In the twelve-five planning outline, the nation proposes to mainly develop the technology of plug-in hybrid electric vehicles, pure electric vehicles and fuel cell vehicles, develop research and development of plug-in hybrid electric vehicles and pure electric vehicles and large-scale commercial demonstration projects, and promote industrialized application. In recent years, new energy electric vehicles are rapidly developed, the demand for charging piles is increased year by year, the stability of the charging piles becomes particularly important, and a charging pile control board is one of the most important parts of the charging piles. Fill the effect of electric pile control panel and included pile body state monitoring, the state monitoring of high-power module of charging, automobile charge front and back state monitoring and so on. In such a complex industrial environment, there is a certain difficulty in designing the control board, including stability of communication, interference resistance in industrial situations, protection capability of the control board, and the like.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the embodiment of the utility model provides a direct current fills electric pile control system has solved multichannel communication system unstability, and the surge leads to signal system to damage, unable normal work scheduling problem.
The embodiment of the utility model provides a direct current fills electric pile control system, including master control circuit, first DC keeps apart the power, and second DC keeps apart the power to and a plurality of inputs of being connected with master control circuit respectively, insulating detection circuitry, CAN communication circuit, voltage detection circuitry, relay control circuit, the rifle temperature detection circuitry that charges, on-vehicle BMS circuit, charging circuit and first power, first power provides operating voltage for master control circuit, master control circuit connects CAN communication circuit to keep apart the power with on-vehicle BMS circuit, charging circuit and first DC respectively through CAN communication circuit and be connected, the break-make of relay control circuit control insulating detection circuitry and on-vehicle BMS circuit, second DC keeps apart the power and steps down to keep apart for the second power to first power.
Optionally, the system further comprises a third DC/DC isolation power supply, the third DC/DC isolation power supply voltage-down isolating the second power supply to the third power supply.
Optionally, the system further includes an RS485 communication circuit or an RS232 communication circuit, and the main control circuit is connected to the RS485 communication circuit or the RS232 communication circuit.
Optionally, the system further comprises an ammeter and a display, and the RS485 communication circuit or the RS232 communication circuit is respectively connected with the ammeter, the display and the insulation detection circuit.
Optionally, the system further comprises an isolation chip, the isolation chip is connected with the RS485 communication circuit or the RS232 communication circuit, and the RS485 communication circuit or the RS232 communication circuit is isolated by the isolation chip and then respectively connected with the ammeter, the display and the insulation detection circuit.
Optionally, the system further includes an optical coupler isolator, and the plurality of input terminals are connected to the main control circuit through the optical coupler isolator.
Optionally, the system further includes a temperature detection circuit for detecting a temperature of the motherboard, wherein the temperature detection circuit includes an NTC temperature sensor.
Optionally, the system further includes a storage circuit, and the storage circuit is connected to the main control circuit.
Optionally, the system further includes a charging connection confirmation contact, the voltage detection circuit includes an operational amplifier circuit and a voltage divider circuit, and the voltage detection circuit collects an output voltage of the charging connection confirmation contact.
Optionally, the charging gun temperature detection circuit includes an operational amplifier circuit, and the operational amplifier circuit employs an LM2904 chip.
The utility model discloses adopt the mode of keeping apart the power for prior art, will isolate with the power ground digitally for digital signal ground becomes stable safety, uses the isolation power with important communication system simultaneously and keeps apart. And the input IO is isolated by using an optical coupler, and the output control is isolated by using a relay. Therefore, the stability of the communication system is guaranteed, and the problems of interference, unstable signals and the like are fundamentally solved.
Drawings
Fig. 1 is a schematic diagram of a circuit structure of a dc charging pile control system according to the present invention;
fig. 2 is a schematic circuit diagram of the relay control circuit of the present invention;
fig. 3 is a schematic circuit diagram of the voltage detection circuit of the present invention;
fig. 4 is a schematic circuit diagram of the charging gun temperature detection circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a direct current fills electric pile control system, including master control circuit, first DC keeps apart the power, and the power is kept apart to second DC to and a plurality of inputs of being connected with master control circuit respectively, insulating detection circuitry, CAN communication circuit, voltage detection circuit, relay control circuit, the rifle temperature detection circuitry that charges, on-vehicle BMS circuit, charging circuit and first power, first power provides operating voltage for master control circuit, master control circuit connects CAN communication circuit to keep apart the power with on-vehicle BMS circuit, charging circuit and first DC respectively through CAN communication circuit and be connected, the break-make of insulating detection circuitry of relay control circuit control and on-vehicle BMS circuit, second DC keeps apart the power and steps down to keep apart for the second power to first power.
Referring to fig. 1, an embodiment of a DC charging pile control system of the present invention includes a main control circuit 10, a first DC/DC isolated power source, a second DC/DC isolated power source, and a plurality of input terminals 20, an insulation detection circuit 30, a CAN communication circuit 40, a voltage detection circuit 50, a relay control circuit 60, a charging gun temperature detection circuit 70, an on-board BMS circuit 80, a charging circuit 90 and a first power source, which are connected to the main control circuit 10, respectively, the first power supply supplies an operating voltage to the main control circuit 10, the main control circuit 10 is connected to the on-board BMS circuit 80, the charging circuit 90, and the first DC/DC isolation power supply through the CAN communication circuit 40, the relay control circuit 60 controls the on/off of the insulation detecting circuit 30 and the on-board BMS circuit 80, the second DC/DC isolation power supply performs voltage reduction isolation on the first power supply to form a second power supply.
The utility model discloses an in one of them embodiment, direct current fills electric pile control system and still includes third DC isolation power, and third DC isolation power keeps apart the second power step-down and keeps apart for the third power.
In one embodiment, the first power supply is an EVP10-24S12 power supply, the first DC/DC isolation power supply is used for carrying out voltage reduction isolation on a 24V first power supply into a 12V second power supply, the first DC/DC isolation power supply is connected with a circuit board and a digital signal through a 0 ohm resistor, wherein the 12V second power supply is mainly used for supplying power to a pull-in coil of a relay of the relay control circuit, the 12V second power supply is reduced to a 5V power supply without isolation or a 5V isolation power supply, the 5V power supply without isolation is used for supplying logic voltage to a main board, the 5V isolation power supply is used for supplying isolation power to an isolation chip, the 5V power supply without isolation is obtained by the 12V second power supply through DC/DC reduction of XL1509-5.0E1, the 3V power supply without isolation is obtained by the 12V second power supply through DC/AMS reduction of 117-3.3, the 5V power supply with the isolation is obtained by isolating and reducing the voltage of a DC/DC isolation power supply with the model number of F0505S-1WR 3.
The utility model discloses direct current fills electric pile control system still includes RS485 communication circuit or RS232 communication circuit, master control circuit is connected with RS485 communication circuit or RS232 communication circuit respectively. The utility model discloses still include ammeter and display, the ammeter is connected respectively to RS485 communication circuit or RS232 communication circuit, display and insulating detection circuitry.
The utility model discloses an in one of them embodiment, control system is still including keeping apart the chip, keep apart the chip and connect RS485 communication circuit or RS232 communication circuit, RS485 communication circuit or RS232 communication circuit connect the ammeter respectively after keeping apart the chip, display and insulating detection circuitry.
The utility model discloses the display is used for showing and fills electric pile whole data, the user can be through the screen modification parameter of display, the selection function of charging, the debugging fills electric pile, it can make the user more comfortable to have good visual human-computer interaction interface, the display still includes the display keysets, WE5500 network chip connection server on the display keysets, the parameter that makes to fill electric pile can interact with external platform, and then can let the user fill opening of electric pile and stop and the time of charging through cell-phone APP control, the setting of network parameter etc.
And an RS232 communication interface on the display adapter plate can perform data interaction with a display, so that the anti-interference capability is enhanced. Data interaction is carried out through an RS485 communication circuit on the display adapter plate and the main controller, and the anti-interference capability is greatly enhanced. The system sends an instruction to the main control circuit through the display adapter plate to control the start and stop of the main control circuit.
The utility model discloses an in one of them embodiment, control system still includes opto-coupler isolation and a plurality of signal feedback end, a plurality of inputs keep apart through the opto-coupler and connect main control circuit, and a plurality of signal feedback ends adopt the model to keep apart for the opto-coupler of PC817, have strengthened mainboard interference killing feature, mainly used detect emergency stop feedback, input loop state feedback, lightning protection feedback, electronic lock position feedback, main contactor feedback, auxiliary contactor feedback, entrance guard feedback, input ac contactor feedback.
Please refer to fig. 2, the utility model discloses control system's relay control circuit adopts the 12V ohm dragon relay of taking the optical coupling to keep apart, has strengthened the interference killing feature, and the function that multi-path relay can expand will be more, and mainly used controls insulating detection circuitry negative terminal signal, electronic lock unblock signal, all fills relay, input ac contactor, release circuit, insulating detection positive terminal signal, fan control end, electronic lock control, charge indicator, BMS auxiliary power source relay, main output contactor.
The utility model discloses control system passes through 12V relay control external equipment, through RS485 and insulating detection circuitry communication, acquires D + and D-insulation resistance to ground, through RS485 and ammeter communication, acquires ammeter data. The insulation detection circuit adopts a voltage type measurement scheme, so that the insulation resistance can be measured more accurately. The voltage transmitter can rapidly and accurately acquire the voltage outside the K1K2, so that the safety of the charging process is ensured.
The utility model discloses control system includes two ways CAN communication ports that take the isolation, what keep apart the chip and adopt is NSI2121N0, has strengthened the interference killing feature, and two ways CAN are used for carrying out BMS data interaction with the on-vehicle BMS circuit of vehicle to and carry out charging data interaction with charging circuit. The control system comprises 3 RS485 communication ports, the type of an isolation chip adopted by the three RS485 ports is NSI8131N0, and the isolation chip is respectively communicated with an ammeter, an insulation detection circuit and a display. The communication isolation of the CAN communication circuit and the RS485 communication circuit adopts a DC/DC isolation power supply with the model of F0505S-1WR3, and the stability of digital signals and communication is ensured.
The utility model discloses control system still confirms contact CC including the charging connection, please refer to fig. 3 and show, voltage detection circuit includes operational amplifier circuit and bleeder circuit, and the operational amplifier circuit adopts LM2904 chip U8, utilizes fortune all the way to put earlier and form the follower, makes CC voltage follow, and bleeder circuit includes the bleeder resistor R34 of 3k and the bleeder resistor R36 of 1k, converts the 12V input into 3V, later recycles to follow all the way and pass to master control circuit with voltage.
The voltage detection circuit collects the output voltage of the charging connection confirmation contact. Referring to fig. 4, the charging gun temperature detection circuit includes an operational amplifier circuit, which uses an LM2904 chip U12, and includes two temperature acquisition paths, mainly using a 1k voltage dividing resistor R41 or R42 to divide voltage first and then using an LM2904 operational amplifier to follow the voltage, and then using a main control circuit to perform ADC sampling. The control system utilizes an 11k resistor and a 20k resistor to perform voltage division processing on the voltage collected and converted by the voltage transmitter, and further obtains the actual direct current output voltage.
The utility model discloses control system still includes memory circuit, and memory circuit connects master control circuit. The storage circuit adopts a W25Q128 memory, and the storage capacity can be enlarged. The main control circuit of the control system adopts a controller with the model number of STM32F407ZGT 6. The control system mainboard utilizes the NTC temperature sensor to design a mainboard temperature detection sensor, and strengthens the safety guarantee in the case.
In one embodiment, the insulation detection circuit adopts a voltage type measurement scheme, so that the insulation resistance can be measured more accurately.
The utility model discloses a mode of keeping apart the power is kept apart with the power ground digitally for digital signal ground becomes stable safety, uses the isolation power to keep apart important communication system simultaneously. And the input IO is isolated by using an optical coupler, and the output control is isolated by using a relay. Therefore, the stability of the communication system is guaranteed, and the problems of interference, unstable signals and the like are fundamentally solved. And an isolated power supply corresponds to one output, a TVS tube is added on the output to prevent electrostatic surge, a resistor is added to perform impedance and the like, so that the channel communication becomes stable and reliable, and the control of a digital signal system on the periphery is not influenced.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. The utility model provides a direct current fills electric pile control system, its characterized in that, includes master control circuit, and first DC keeps apart the power, and second DC keeps apart the power to and a plurality of inputs that are connected with master control circuit respectively, insulating detection circuitry, CAN communication circuit, voltage detection circuit, relay control circuit, the rifle temperature detection circuitry that charges, on-vehicle BMS circuit, charging circuit and first power, first power provides operating voltage for master control circuit, master control circuit connects CAN communication circuit to keep apart the power with on-vehicle BMS circuit, charging circuit and first DC respectively through CAN communication circuit and be connected, relay control circuit controls the break-make of insulating detection circuitry and on-vehicle BMS circuit, second DC keeps apart the power and steps down to keep apart for the second power for first power.
2. The direct current charging post control system of claim 1, further comprising a third DC/DC isolated power supply, the third DC/DC isolated power supply voltage-dropping isolating the second power supply to the third power supply.
3. The direct current charging pile control system according to claim 1, further comprising an RS485 communication circuit or an RS232 communication circuit, wherein the main control circuit is connected with the RS485 communication circuit or the RS232 communication circuit.
4. The direct current charging pile control system according to claim 3, further comprising an electric meter and a display, wherein the RS485 communication circuit or the RS232 communication circuit is respectively connected with the electric meter, the display and the insulation detection circuit.
5. The direct current charging pile control system according to claim 4, further comprising an isolation chip, wherein the isolation chip is connected with the RS485 communication circuit or the RS232 communication circuit, and the RS485 communication circuit or the RS232 communication circuit is isolated by the isolation chip and then respectively connected with the ammeter, the display and the insulation detection circuit.
6. The direct current charging pile control system according to claim 1, further comprising an optical coupler isolation, wherein the plurality of input terminals are connected to the main control circuit through the optical coupler isolation.
7. The dc charging pile control system according to claim 1, further comprising a temperature detection circuit for detecting a temperature of the main board, wherein the temperature detection circuit comprises an NTC temperature sensor.
8. The direct current charging pile control system according to claim 1, further comprising a storage circuit, wherein the storage circuit is connected to the main control circuit.
9. The direct-current charging pile control system according to claim 1, further comprising a charging connection confirmation contact, wherein the voltage detection circuit comprises an operational amplification circuit and a voltage division circuit, and the voltage detection circuit collects output voltage of the charging connection confirmation contact.
10. The dc charging pile control system according to claim 1, wherein the charging gun temperature detection circuit comprises an operational amplifier circuit, and the operational amplifier circuit employs an LM2904 chip.
CN202120296453.9U 2021-02-02 2021-02-02 Direct current fills electric pile control system Active CN214775470U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120296453.9U CN214775470U (en) 2021-02-02 2021-02-02 Direct current fills electric pile control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120296453.9U CN214775470U (en) 2021-02-02 2021-02-02 Direct current fills electric pile control system

Publications (1)

Publication Number Publication Date
CN214775470U true CN214775470U (en) 2021-11-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120296453.9U Active CN214775470U (en) 2021-02-02 2021-02-02 Direct current fills electric pile control system

Country Status (1)

Country Link
CN (1) CN214775470U (en)

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Effective date of registration: 20231011

Address after: 1202-1205, Venture Capital Building, No. 9 Tengfei Road, Huanggekeng Community, Longcheng Street, Longgang District, Shenzhen City, Guangdong Province, 518100

Patentee after: CHEKUQIHAO NEW ENERGY TECHNOLOGY (SHENZHEN) Co.,Ltd.

Patentee after: Shenzhen Kuchong Technology Co.,Ltd.

Address before: 518000 Room 202, building 1, Zhida enterprise, Zhida Industrial Park, No. 4, Longping West Road, Longcheng street, Longgang District, Shenzhen, Guangdong Province

Patentee before: CHEKUQIHAO NEW ENERGY TECHNOLOGY (SHENZHEN) Co.,Ltd.

Patentee before: Shenzhen garage electric pile technology Co.,Ltd.

Patentee before: Hainan garage electric pile technology Co.,Ltd.