CN220764140U

CN220764140U - Integrated electric energy distribution and monitoring device for automobile charging station

Info

Publication number: CN220764140U
Application number: CN202322674457.8U
Authority: CN
Inventors: 张慧君; 潘茜茜; 张钰鑫; 王容笛; 蔡明华; 石明辉; 余大庆
Original assignee: Henan Longyuan Information Technology Co ltd; Xinyang Normal University
Current assignee: Henan Longyuan Information Technology Co ltd; Xinyang Normal University
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-04-12
Anticipated expiration: 2033-10-07

Abstract

The utility model belongs to the technical field of charging station power supply, and particularly relates to an integrated electric energy distribution and monitoring device of an automobile charging station, which comprises a MODBUS local area network and an Internet of things, wherein the MODBUS local area network is a master control network, the Internet of things is a slave control network, and the two networks realize data interconnection through a MODBUS master station controller; a plurality of secondary station protectors are arranged in the MODBUS local area network, and each secondary station protector comprises an electric energy metering module and a solid-state relay; the gateway of the Internet of things belongs to a slave station of the MODBUS local area network, the gateway of the Internet of things is accessed into the MODBUS local area network through a COM port (485 communication mode), the gateway of the Internet of things is linked to the Arian cloud platform, and the PC terminal or the mobile phone terminal is accessed into the Arian cloud platform; the electric energy metering module is used as a secondary station of the MODBUS local area network to collect charging parameters of the electric automobile, and an output control port of the MODBUS master station controller is connected with solid state relays of all charging piles to control on-off of power supply output of the charging piles. The utility model greatly increases the number of charging piles of the charging station on the premise of not improving the limit power supplied by the charging station.

Description

Integrated electric energy distribution and monitoring device for automobile charging station

Technical Field

The utility model belongs to the technical field of charging station power supply, and particularly relates to an integrated electric energy distribution and monitoring device of a vehicle charging station.

Background

Development of electric vehicles is an important strategy for realizing national energy conservation and emission reduction and developing low-carbon economic requirements, and accelerating construction of charging facilities and establishing perfect charging service are necessary conditions for promoting development and application of the electric vehicles. In order for an electric vehicle to travel freely, a special charging pile capable of quick charging must be provided. The storage battery of the novel electric automobile has larger capacity, and needs larger power for charging, and particularly, the real-time power bicycle required by rapid charging reaches tens of kilowatts.

The essence of the quick charging of the charging pile is that the charging pile is charged by a large current direct current supply, and if a plurality of electric vehicles are guaranteed to be quickly charged, the total power output by the charging station is remarkable, so that the charging pile device can not work normally or burn. In view of the large charging current of the electric automobile, the number of charging piles arranged in the station is limited to a certain extent, usually about 30 charging piles or more, the output of a single charging pile is about 10 kilowatts, and based on the output, the full-load power of one charging station of the electric automobile is about 300 kilowatts. 300 kw is already a very large load for a charging station, but at most 30 charging piles can only meet the simultaneous charging of 30 electric vehicles, which often cannot meet the charging requirements of a large number of electric vehicles.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an integrated electric energy distribution and monitoring device of a vehicle charging station, and a MODBUS master station controller determines whether to adopt a PWM mode for rapid alternate power supply according to the load and the size of charging output of a charging pile, so that the number of charging piles of the charging station is greatly increased on the premise of not improving the limit power supplied by the charging station.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an integrated electric energy distribution and monitoring device of a vehicle charging station, which comprises a MODBUS local area network and an Internet of things, wherein the two networks are connected with each other through a MODBUS master station controller; a plurality of secondary station protectors are arranged in the MODBUS local area network, each secondary station protector is arranged at the power frequency power input end of one charging pile in a charging station, and each secondary station protector comprises an electric energy metering module and a solid-state relay; an Internet of things gateway is further arranged in the MODBUS local area network, the Internet of things gateway is connected into the MODBUS local area network through a COM port in a mode of an MODBUS local area network slave station, the Internet of things gateway is connected to an Arian cloud platform, and a PC terminal or a mobile phone terminal is connected into the Arian cloud platform; the communication port of the MODBUS master station controller is connected with a plurality of electric energy metering modules, and charging parameters of the electric automobile are collected; an output control port of the MODBUS master station controller is connected with the solid-state relay of each charging pile to control the on-off of the power supply output of the charging pile; and the communication port of the MODBUS master station controller is connected with the Internet of things gateway.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, further, the MODBUS master station controller selects Schneider TM200 series PLC.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, the Internet of things gateway is a V-BOX E-4G Internet of things gateway, and the V-BOX E-4G Internet of things gateway is used as a slave station of a MODBUS local area network and is connected to 485 communication serial ports of Schneider TM200 series PLCs through the COM port.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, the V-BOX E-4G Internet of things gateway and the MODBUS master station controller are further arranged in a main machine BOX body, and the main machine BOX body is arranged in a monitoring room.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, the electric energy metering module is a CL1X electric energy metering module which collects the power frequency supply current of the charging pile; and the output end of the CL1X electric energy metering module is connected with a TTL-485 converter.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, a plurality of TTL-485 converters are connected to 485 communication serial ports of Schneider TM200 series PLCs in a daisy-chain mode.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, further, the Schneider TM200 series PLC expands an output control port by adding a digital module in a cascading manner.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, further, the V-BOX E-4G Internet-of-things gateway is provided with an Internet-of-things flow card or an RJ45 interface, the Internet or a mobile, a communication and a telecom operator link with the Ali cloud platform, the mobile phone terminal is connected with the Ali cloud platform through a 4G/5G network, and the PC terminal is connected with the Ali cloud platform through an Internet network.

According to the integrated electric energy distribution and monitoring device of the automobile charging station, the secondary station protector is further arranged in the charging pile box body or in the open air.

Compared with the prior art, the utility model has the following advantages:

according to the utility model, the electric energy metering module is used for collecting charging parameters of the electric automobile, the MODBUS master station controller is used for reading power frequency power supply current of the charging pile, the master station controller is used for continuously or rapidly and alternately adjusting the power supply of the charging pile according to real-time data, meanwhile, the master station controller is used for sending the collected data to the Internet of things gateway, and the Internet of things gateway is linked to the Alicloud platform through the Internet or a mobile, a communication and telecom operator, so that data display of a remote PC terminal and a mobile phone terminal of the Internet of things is realized. The rapid alternate power supply mode belongs to wide pulse power supply for a single electric automobile, and the power-off state of the wide pulse can enable a charging pile power device of the electric automobile to be in a heat dissipation state, so that enough time is given to electrochemical reaction, and the efficiency of chemical reaction of a lead acid or lithium battery is improved. The pulse high levels of the charging piles of each batch are staggered in a time-sharing manner, so that the real-time output total power of the charging station is ensured to be lower than the output limit power of the charging station, and the output total power of the charging station can be kept within a safe range.

Drawings

FIG. 1 is a topology diagram of an integrated power distribution and monitoring device for a vehicle charging station according to an embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of an integrated power distribution and monitoring device for a vehicle charging station according to an embodiment of the present utility model;

fig. 3 is an exemplary diagram of a rapid alternate power supply in accordance with an embodiment of the present utility model.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments.

As shown in fig. 1, the integrated electric energy distribution and monitoring device of the automobile charging station of the embodiment comprises a MODBUS local area network and an internet of things, and the two networks are connected with each other through a MODBUS master station controller. The MODBUS LAN is internally provided with a plurality of secondary station protectors, each secondary station protector is arranged at the power frequency power input end of one charging pile in the charging station, the secondary station protectors comprise an electric energy metering module and a solid-state relay, the secondary station protectors can be arranged in the charging pile box body and can be also arranged in the open air, and the main circuit board of the secondary station protectors is arranged in the waterproof box, so that the damage of wind, rain and dust to the circuit board can be prevented. The MODBUS local area network is also internally provided with an Internet of things gateway, the Internet of things gateway is connected into the MODBUS local area network through a COM port in a mode of an MODBUS local area network slave station, the Internet of things gateway is connected to the Arian cloud platform, and the PC terminal or the mobile phone terminal is connected into the Arian cloud platform. As shown in fig. 2, a communication port of the MODBUS master station controller is connected with a plurality of electric energy metering modules, and acquires charging parameters of the electric automobile; the output control port of the MODBUS master station controller is connected with the solid-state relay of each charging pile, the on-off of the power supply output of the charging pile is controlled, and the communication port of the MODBUS master station controller is connected with the Internet of things gateway.

Specifically, the Internet of things gateway selects a V-BOX E-4G Internet of things gateway, the MODBUS master station controller selects TM200C16T of Schneider TM200 series PLC, and the PLC is selected based on industrial-level application requirements of high reliability and high cost performance of the MODBUS master station controller. The V-BOX E-4G Internet of things gateway and the MODBUS master station controller are arranged in a main machine BOX body, and the main machine BOX body is arranged in a monitoring room.

The power metering module adopts a CL1X power metering module, the CL1X power metering module can collect 9 power parameters including voltage, current, active power, power factor, power supply frequency, reactive power, apparent power, active electric quantity and electric quantity timing of a power load at the same time, and the power frequency power supply current (the power supply voltage is usually 220V alternating current) of the charging piles is mainly used in the embodiment, and a plurality of charging piles are identified and distinguished by virtue of MODBUS slave station address numbers of the charging piles. The output end of each CL1X electric energy metering module is also connected with a TTL-485 converter, the serial port TTL level can be converted into the RS485 level, and a plurality of TTL-485 converters are connected to 485 communication serial ports of Schneider TM200 series PLCs in a daisy-chain mode.

The PLC is provided with a 485 communication serial port, and the V-BOX E-4G Internet of things gateway is used as a slave station of the MODBUS local area network and is connected to the 485 communication serial port of the PLC through a COM port, wherein D1 is connected with a 485 plus end, and D0 is connected with a 485 minus end. The slave station number of the internet of things gateway can be set to be 1, the slave station numbers of the CL1X electric energy metering modules are sequentially 2, 3 and 4 to 135, the PLC controller reads the data of the No. 2 and other CL1X electric energy metering modules, and the required current value is extracted and packaged and sent to the No. 1 slave station V-BOX E-4G internet of things gateway.

The TM200C16T of the Schneider TM200 series PLC is provided with 7 output ports, so that the protective output power supply control of 7 charging piles can be realized, the output control ports are expanded in a mode of cascading and adding digital modules, and the number of the output control ports can be expanded to 135.

The V-BOX E-4G Internet of things gateway is provided with an Internet of things flow card or RJ45 interface, an Arian cloud platform is linked through Internet or mobile and telecom operators, a mobile phone terminal is accessed to the Arian cloud platform through a 4G/5G network, a PC terminal is accessed to the Arian cloud platform through the Internet, the PC terminal or the mobile phone terminal realizes data interaction with a main control local area network through the Arian cloud platform, and system maintenance personnel and electric automobile owners can learn the real-time working state of the charging pile through a mobile phone or PC monitoring interface.

As a preferable scheme, a local man-machine interface secondary station can be added in the MODBUS local area network, so that the display of the electric energy data of the secondary station charging pile and the control of the power supply output of the secondary station charging pile are realized.

The working principle is as follows:

assuming that the output power of a single charging pile is 10 kilowatts and the output limit power of a charging station is 300 kilowatts, a single batch can only meet 30 charging piles to charge 30 electric vehicles at the same time, and the maximum number of the electric vehicles charged in the single batch is based on the maximum power which can be provided by the charging station. In order to meet the charging requirement of a large number of electric vehicles, the number of charging piles is increased from 30 to 135, and if all electric vehicles are simultaneously met, the total power of simultaneous power supply can be achieved: 10 kw is 135=1350 kw, the output limit power of the far-super-charging station is 300 kw, and entering the fast alternate power supply can keep the real-time output total power of the charging station unchanged (the total power is 300 kw).

Under normal conditions, the MODBUS master station controller polls and monitors the current value of each charging pile in real time, sends electric parameter data to the mobile phone terminal or the PC terminal through the Internet of things gateway, and can receive control information of the terminal. If one or more electric vehicles intervene in charging, the MODBUS master station controller can monitor data change in real time, and if the total load of the charged vehicles is lower than the total load value (300 kilowatts) of a single batch (for example, 30 vehicles are charged) of a charging station, the charging system ensures that the batch of electric vehicles is normally and continuously powered. If the total load of the charged automobiles is higher than the single-batch total load value of the charging station, detecting whether the total number of the charged automobiles exceeds the single-batch total number at the moment; if the load value exceeds the standard, the electric automobiles are divided into batches (for example, more than 30 electric automobiles are divided into 2 batches and more than 60 electric automobiles are divided into 3 batches) according to the multiple relation of the total number of the single batches, and the system enters a stage of rapidly and alternately supplying power to the electric automobiles in each batch. The principle of batch selection is based on the increasing number of the station numbers of the charging piles to be used (for example, the charging piles of the secondary stations of the numbers 2-31 are all used and are divided into a first batch, the charging piles of the secondary stations of the numbers 32-61 are all used and are divided into a second batch, if one or a plurality of station numbers are not used in the middle, the serial numbers are followed, and the like). As shown in fig. 3, when 2 or 3 batches of electric vehicles are connected to the charging pile system, the MODBUS master station controller is used for supplying continuous current to a single batch of electric vehicles in a fixed period, then rapidly turning off the power supply of the batch of electric vehicles, switching to the power supply of the next batch of electric vehicles, and then performing cycle execution, wherein the rapid alternate power supply in a PWM mode is adopted to ensure that the instantaneous total power of the charging station does not exceed the limit power of the charging station. If the number of the charged automobiles is reduced to be lower than the single batch of the total load of the charging station, the batch of the electric automobiles are recovered to be normally and continuously powered.

If the total number of the charging automobiles does not exceed the total number of a single batch (for example, 30 automobiles are charged) and the load value exceeds the standard, the output current values of the batch of charging piles are checked one by one, the output of a single charging pile or a plurality of charging piles is abnormal, the power supply output of the charging piles is immediately disconnected, and at the moment, manual intervention detection and maintenance are needed.

The MODBUS master station controller interconnects a mobile phone terminal or a PC terminal through the V-BOX E-4G Internet of things gateway by the Ali cloud platform, and the mobile phone terminal and the PC terminal can read or control the working state of the charging pile.

Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model belongs. The use of the terms "a" or "an" and the like in the description and in the claims does not necessarily imply a limitation on the amount. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model are included in the protection scope of the present utility model.

Claims

1. The integrated electric energy distribution and monitoring device for the automobile charging station is characterized by comprising a MODBUS local area network and an Internet of things, wherein the two networks are connected with each other through a MODBUS master station controller; a plurality of secondary station protectors are arranged in the MODBUS local area network, each secondary station protector is arranged at the power frequency power input end of one charging pile in a charging station, and each secondary station protector comprises an electric energy metering module and a solid-state relay; an Internet of things gateway is further arranged in the MODBUS local area network, the Internet of things gateway is connected into the MODBUS local area network through a COM port in a mode of an MODBUS local area network slave station, the Internet of things gateway is connected to an Arian cloud platform, and a PC terminal or a mobile phone terminal is connected into the Arian cloud platform; the communication port of the MODBUS master station controller is connected with a plurality of electric energy metering modules, and charging parameters of the electric automobile are collected; an output control port of the MODBUS master station controller is connected with the solid-state relay of each charging pile to control the on-off of the power supply output of the charging pile; and the communication port of the MODBUS master station controller is connected with the Internet of things gateway.

2. The integrated power distribution and monitoring device of claim 1, wherein the MODBUS master station controller is a schrader (TM) 200 series PLC.

3. The integrated electric energy distribution and monitoring device of the automobile charging station according to claim 2, wherein the internet of things gateway is a V-BOX E-4G internet of things gateway, and the V-BOX E-4G internet of things gateway is used as a slave station of the MODBUS local area network and is connected to a 485 communication serial port of schneider TM200 series PLC through a COM port.

4. The integrated power distribution and monitoring device for a vehicle charging station of claim 3, wherein the V-BOX E-4G internet of things gateway and the MODBUS master station controller are mounted in a mainframe BOX that is disposed in a monitoring room.

5. The integrated power distribution and monitoring device of a vehicle charging station of claim 2, wherein the power metering module is a CL1X power metering module that collects power frequency supply current of the charging post; and the output end of the CL1X electric energy metering module is connected with a TTL-485 converter.

6. The integrated power distribution and monitoring device of claim 5, wherein the plurality of TTL-485 converters are daisy chained to 485 communication serial ports of schrader (TM) 200 series PLCs.

7. The integrated power distribution and monitoring device of a vehicle charging station of claim 2, wherein the schneider (TM) 200 series PLC extends the output control port by cascading digital modules.

8. The integrated electric energy distribution and monitoring device of the automobile charging station according to claim 3, wherein the V-BOX E-4G Internet of things gateway is provided with an Internet of things flow card or RJ45 interface, the Internet of things flow card or RJ45 interface is linked with the oricloud platform through Internet or mobile, mobile and telecom operators, the mobile phone terminal is accessed to the oricloud platform through a 4G/5G network, and the PC terminal is accessed to the oricloud platform through the Internet network.

9. The integrated power distribution and monitoring device of claim 1, wherein the secondary station protector is mounted inside a charging pile housing or in the open air.