CN214900862U - Multipath communication isolation device for direct current charging pile - Google Patents
Multipath communication isolation device for direct current charging pile Download PDFInfo
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- CN214900862U CN214900862U CN202121102137.XU CN202121102137U CN214900862U CN 214900862 U CN214900862 U CN 214900862U CN 202121102137 U CN202121102137 U CN 202121102137U CN 214900862 U CN214900862 U CN 214900862U
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- 238000002955 isolation Methods 0.000 title claims abstract description 50
- 238000004891 communication Methods 0.000 title claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 2
- 102100036285 25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial Human genes 0.000 description 2
- 101000875403 Homo sapiens 25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial Proteins 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
Abstract
The utility model relates to a multichannel communication isolating device for a direct current charging pile, wherein a control unit (1) of the charging pile comprises a microcontroller (U1), and the device comprises an isolating module (2) and a transceiver module (3); the isolation module comprises an isolator (U2), wherein the isolator comprises a primary side power supply voltage input end, a secondary side power supply voltage output end and at least four signal isolation channels; the transceiver module comprises a singlechip (U3); the microcontroller and the single chip microcomputer both support an SPI protocol, the microcontroller is an SPI master device, and the single chip microcomputer is an SPI slave device; the transceiver module also comprises a plurality of transceivers (4), the singlechip also comprises a plurality of input and output ends, and the transmitting end and the receiving end of each transceiver are respectively connected with the input and output ends of the singlechip; the primary side power supply voltage input end is externally connected with a direct current power supply, and the secondary side power supply voltage output end provides a working power supply for the single chip microcomputer and the transceiver. The utility model discloses a multichannel communication keeps apart, has reduceed the circuit device cost, also can reduce area occupied on the PCB.
Description
Technical Field
The utility model relates to an electric automobile fills electric pile, in particular to direct current fills multichannel communication isolating device for electric pile.
Background
The direct current charging pile is a typical strong and weak current combined electronic system, and a strong current part of charging power current and a background control, display, communication, charging and other weak current systems are integrated in the direct current charging pile. Generally, the main communication modes of data transmission in the direct current charging pile comprise a CAN bus, an RS485 bus, an RS232 bus, Wifi, GPRS, an industrial Ethernet and the like, wherein the direct current charging pile and the electric automobile communicate through the CAN, a control unit of the direct current charging pile and a charging machine also communicate through the CAN to control the charging process, the RS485 bus and the RS232 bus are both typical serial communication standards, an electric energy meter, insulation detection and control units generally communicate through the RS485, a card swiping machine, a micro printer and other components and the control unit generally communicate through the RS232, Wifi, GPRS, the industrial Ethernet and the like are mainly connected with an Internet of vehicles, a server background and the like.
Because the on-site environment that the direct current fills electric pile and is located is comparatively complicated, and its inside contains the control unit relevant with the forceful electric power, and data transmission based on multiple communication mode between control unit and a plurality of weak current systems simultaneously, therefore need carry out communication isolation to the data transmission in the direct current fills electric pile to adapt to strong interference environment and satisfy relevant safety standard.
At present, communication isolation is generally realized through a single isolation device, and when multipath communication isolation is required, for example, multipath data transmission such as CAN, RS485, RS232, industrial Ethernet exists in the direct current charging pile, a plurality of isolation devices are correspondingly required to be arranged, and a communication chip with an isolation function has a high price and occupies a large area of a PCB (printed Circuit Board), so that not only is the corresponding hardware cost high, but also the difficulty in realizing the product with high space requirement of the PCB is high.
Disclosure of Invention
An object of the utility model is to provide a DC fills multichannel communication isolating device for electric pile, through isolation module and microcontroller and the singlechip that supports the SPI agreement that supports four ways signal isolation passageways, realized multichannel communication isolation, reduceed the circuit device cost, also can reduce area occupied on the PCB.
The utility model discloses a realize like this:
a multipath communication isolation device for a direct current charging pile is characterized in that a control unit of the charging pile comprises a microcontroller, and data transmission of the charging pile adopts multiple communication modes;
the device comprises an isolation module and a transceiver module;
the isolation module comprises an isolator, and the isolator comprises a primary side power supply voltage input end, a secondary side power supply voltage output end and at least four signal isolation channels;
the transceiver module comprises a singlechip; the microcontroller and the single chip microcomputer both support an SPI protocol, the microcontroller is an SPI master device and comprises a master device data output end, a master device data input end, a clock signal output end and an enable signal output end, and the single chip microcomputer is an SPI slave device and comprises a slave device data input end, a slave device data output end, a clock signal input end and an enable signal input end; the data output end of the master device is connected with the data input end of the slave device, the data input end of the master device is connected with the data output end of the slave device, the clock signal output end of the master device is connected with the clock signal input end of the slave device, and the enable signal output end of the master device is connected with the enable signal output end of the slave device through a signal isolation channel;
the transmitting and receiving module further comprises a plurality of transceivers, the single chip microcomputer further comprises a plurality of input and output ends, and the transmitting end and the receiving end of each transceiver are respectively connected with the input and output ends of the single chip microcomputer;
the primary side power supply voltage input end is externally connected with a direct current power supply, and the secondary side power supply voltage output end provides a working power supply for the single chip microcomputer and the transceiver.
The primary side power supply voltage is direct current 5V, and the secondary side power supply voltage is direct current 5V.
The transceiver comprises one or more of a CAN transceiver, an RS485 transceiver, an RS232 transceiver or an Ethernet transceiver.
Compared with the prior art, the utility model, following beneficial effect has: the communication isolation requirement of the direct current charging pile can be met, the anti-interference performance and the electrical safety performance between strong current and weak current of the direct current charging pile can be ensured, the circuit structure of the device is simple, the cost of circuit devices is greatly reduced, and the occupied area of a PCB (printed circuit board) can be reduced.
Drawings
Fig. 1 is a schematic circuit system block diagram of the multipath communication isolating device for the charging pile of the utility model;
fig. 2 is a schematic diagram of the circuit structure of the present invention.
In the figure, a control unit 1, an isolation module 2, a transceiver module 3, a transceiver 4, a U1 microcontroller, a U2 isolator and a U3 singlechip are arranged.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
Referring to fig. 1, the multipath communication isolation device for the direct current charging pile comprises a control unit 1, wherein the control unit 1 comprises a microcontroller U1. The data transmission of charging pile adopts various communication modes, including CAN bus, RS485 bus, RS232 bus, Ethernet and other modes. The device comprises an isolation module 2 and a transceiver module 3.
Referring to fig. 2, the isolation module 2 includes an isolator U2 for power isolation and communication isolation, and the isolator U2 includes a primary power voltage input terminal VDD1, a secondary power voltage output terminal VDD2, and four signal isolation channels. The four signal isolation channels are respectively a first signal isolation channel, a second signal isolation channel, a third signal isolation channel and a fourth signal isolation channel, and the input end and the output end of each signal isolation channel are respectively VIA and VOA, VIB and VOB, VIC and VOC, VID and VOD in sequence.
The transceiver module 3 comprises a single chip microcomputer U3 and a plurality of transceivers 4, wherein the transceivers 4 include but are not limited to CAN transceivers, RS485 transceivers, RS232 transceivers, Ethernet transceivers and the like, and are used for supporting data transmission of corresponding communication protocols.
Microcontroller U1 and singlechip U3 all support the SPI protocol. An SPI (serial Peripheral interface), namely a serial Peripheral interface, is a high-speed, full-duplex and synchronous communication bus, only four pins are occupied in a chip for data transmission and control, the number of chip pins can be greatly saved, and meanwhile, the space is saved for the layout of a PCB. The SPI protocol specifies that communication between two SPI devices must be controlled by the master device, the clock of the slave device is provided by the master device to the slave device through the SCK pin, the slave device itself cannot generate or control the clock, and the slave device cannot function properly without the clock. The SPI is a ring bus structure and is composed of SDI, SDO, SCK and CS, the time sequence is very simple, and under the control of SCK, two bidirectional shift registers exchange data. Sdi (serial Data input) is mainly used for receiving Data by the SPI device as an entry of Data, sdo (serial Data output) is mainly used for sending Data by the SPI device as an exit of Data, sck (serial clock) is mainly used for transmitting a clock signal to the slave device by the master device and controlling the timing and rate of Data exchange, and cs (chip select) is used for selecting the slave device by the master device so that the selected slave device can be accessed by the master device.
Therefore, microcontroller U1 is the SPI master, specifically, the SDO pin on microcontroller U1 is the master data output, the SDI pin is the master data input, the SCK pin is the clock signal output, and the CS pin is the enable signal output. Singlechip U3 is SPI slave unit, and singlechip U3's SDI pin is as slave unit data input end, and the SDO pin is as slave unit data output end, and the SCK pin is as clock signal input end, and the CS pin is as enabling signal input end. The data transmission is carried out through the first signal isolation channel at the data output end of the master device and the data transmission is carried out through the second signal isolation channel at the data output end of the slave device, the data transmission is carried out through the fourth signal isolation channel at the data input end of the master device and the data transmission is carried out through the third signal isolation channel at the data output end of the clock signal and the data transmission is carried out through the third signal isolation channel at the data output end of the enabling signal.
The singlechip U3 also comprises a plurality of input/output ends I/O, and a transmitting end TX and a receiving end RX of the transceiver are respectively connected with the input/output end of the singlechip U3.
In addition, a primary side power supply voltage input end VDD1 is externally connected with a direct current power supply, and a secondary side power supply voltage output end VDD2 provides working power supplies for the single chip microcomputer U3 and each transceiver 4. The primary side power supply voltage is direct current 5V, and the secondary side power supply voltage is direct current 5V. Therefore, the direct-current power supply conversion is realized through the isolator U2, and the requirement of power supply isolation and voltage resistance can be met.
In this embodiment, the microcontroller U1 employs an NXP MPC5775B chip. The isolator U2 is an ADI ADuM5401 chip, the four-channel digital isolator is integrated with an isolated DC/DC converter, and the integration of isolated DC/DC conversion and communication data isolation is realized in a single package, so that the circuit structure design can get rid of the limitations of cost, size, power consumption, performance and reliability of the traditional optical coupler, and isolation is realized in the design. The single chip microcomputer U3 adopts an NXPFS 32K142HAT0MLHT chip.
The utility model discloses during direct current fills electric pile multichannel communication isolating device and is applied to the time of filling electric pile the control unit and uses, the chip CAN be kept apart to the ordinary non-of corresponding CAN transceiver, and the sending terminal signal of CAN transceiver, receiving terminal signal are connected with the input/output end of singlechip, convert into the SPI signal and realize the communication with microcontroller through the isolator by the singlechip, CAN satisfy the regional withstand voltage requirement of high-low pressure. Similarly, communication data such as RS485, RS232 and Ethernet CAN be isolated similar to CAN bus communication through the isolation module and the transceiver module, and the isolation of the multipath communication data and the control unit CAN be realized by selecting the corresponding common non-isolated transceiver according to the communication data to be isolated, so that the cost of circuit devices for communication isolation is greatly reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, therefore, any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (3)
1. A multipath communication isolation device for a direct current charging pile is characterized in that a control unit (1) of the charging pile comprises a microcontroller (U1), and data transmission of the charging pile adopts multiple communication modes; the method is characterized in that:
the device comprises an isolation module (2) and a transceiver module (3);
the isolation module (2) comprises an isolator (U2), and the isolator (U2) comprises a primary side power supply voltage input end, a secondary side power supply voltage output end and at least four signal isolation channels;
the transceiver module (3) comprises a singlechip (U3); the microcontroller (U1) and the single chip microcomputer (U3) both support SPI protocols, the microcontroller (U1) is an SPI master device and comprises a master device data output end, a master device data input end, a clock signal output end and an enabling signal output end, and the single chip microcomputer (U3) is an SPI slave device and comprises a slave device data input end, a slave device data output end, a clock signal input end and an enabling signal input end; the data output end of the master device is connected with the data input end of the slave device, the data input end of the master device is connected with the data output end of the slave device, the clock signal output end of the master device is connected with the clock signal input end of the slave device, and the enable signal output end of the master device is connected with the enable signal output end of the slave device through a signal isolation channel;
the transceiver module (3) further comprises a plurality of transceivers (4), the single chip microcomputer (U3) further comprises a plurality of input and output ends, and the transmitting end and the receiving end of each transceiver are respectively connected with the input and output ends of the single chip microcomputer (U3);
the primary side power supply voltage input end is externally connected with a direct current power supply, and the secondary side power supply voltage output end provides a working power supply for the single chip microcomputer (U3) and the transceiver (4).
2. The multipath communication isolation device for the direct current charging pile according to claim 1, characterized in that: the primary side power supply voltage is direct current 5V, and the secondary side power supply voltage is direct current 5V.
3. The multipath communication isolation device for the direct current charging pile according to claim 1, characterized in that: the transceiver (4) comprises one or more of a CAN transceiver, an RS485 transceiver, an RS232 transceiver or an Ethernet transceiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121102137.XU CN214900862U (en) | 2021-05-21 | 2021-05-21 | Multipath communication isolation device for direct current charging pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121102137.XU CN214900862U (en) | 2021-05-21 | 2021-05-21 | Multipath communication isolation device for direct current charging pile |
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| Publication Number | Publication Date |
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| CN214900862U true CN214900862U (en) | 2021-11-26 |
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| CN202121102137.XU Active CN214900862U (en) | 2021-05-21 | 2021-05-21 | Multipath communication isolation device for direct current charging pile |
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- 2021-05-21 CN CN202121102137.XU patent/CN214900862U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20240102 Address after: Room 304, 3rd Floor, Building 1, No. 111 Wusongjiang Avenue, Guoxiang Street, Wuzhong District, Suzhou City, Jiangsu Province, 215124 Patentee after: JIANGSU DUPU NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: Room 1001, 10 / F, office building, Shihu Jinling Plaza, 88 Nanxijiang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province, 215128 Patentee before: DuPu (Suzhou) New Energy Technology Co.,Ltd. |
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