CN207711838U - A kind of intelligent DC charging pile - Google Patents

A kind of intelligent DC charging pile Download PDF

Info

Publication number
CN207711838U
CN207711838U CN201721813456.5U CN201721813456U CN207711838U CN 207711838 U CN207711838 U CN 207711838U CN 201721813456 U CN201721813456 U CN 201721813456U CN 207711838 U CN207711838 U CN 207711838U
Authority
CN
China
Prior art keywords
module
central processing
processing unit
output end
contactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201721813456.5U
Other languages
Chinese (zh)
Inventor
于晓岩
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.)
Zhongzhou Electric Co Ltd
Original Assignee
Zhongzhou Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongzhou Electric Co Ltd filed Critical Zhongzhou Electric Co Ltd
Priority to CN201721813456.5U priority Critical patent/CN207711838U/en
Application granted granted Critical
Publication of CN207711838U publication Critical patent/CN207711838U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • Y02T90/167Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Landscapes

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

Abstract

The utility model discloses a kind of intelligent DC charging piles, are provided with two-dimensional code scanning mechanism, programmable voice module, loud speaker, special gathering Quick Response Code and terminal, and the communication module and server of the central processing unit of connection intelligent DC charging pile;The output end of central processing unit connects loud speaker by editable voice module;By communication module Connection Service device, the server is separately connected two-dimensional code scanning mechanism and scans the terminal of special gathering Quick Response Code the central processing unit.A kind of intelligent DC charging pile of offer of the utility model can use a variety of payment methods, and play charging process in time with voice broadcast function, remind user so that more convenient when user uses.

Description

A kind of intelligent DC charging pile
Technical field
The utility model is related to DC charging technical field more particularly to a kind of intelligent DC charging piles.
Background technology
Currently, global energy crisis and environmental pollution are increasingly severe, therefore, become trend, electricity using the clean energy The use of motor-car or electric vehicle is more and more extensive.In order to solve the problems, such as that electric vehicle or electric vehicle charging are inconvenient, direct current fills The laying of electric stake is more and more comprehensive.And as science and technology continues to develop, people increasingly pursue convenient charging facility, and it is more convenient to pursue More intelligent operation, more convenient payment method, therefore, there is an urgent need for a kind of more intelligent direct-current charging posts.
Utility model content
The purpose of this utility model is to provide a kind of intelligent DC charging pile, can use a variety of payment methods, and have Voice broadcast function plays charging process in time, reminds user so that more convenient when user uses.
The technical solution adopted in the utility model is:
A kind of intelligent DC charging pile, including ac power output mouth, A.C. contactor, electric energy metering module, high frequency Rectification module, filter module, D.C. contactor, DC charging gun platform, central processing unit, AC-DC conversion module, communication module, Server, two-dimensional code scanning mechanism, terminal, card reading module, programmable voice module, loud speaker and operable display screen;Also wrap Include special gathering Quick Response Code;
Ac power output mouth is sequentially connected A.C. contactor and electric energy metering module, the output end of electric energy metering module It is sequentially connected high-frequency rectification module and filter module, the output end of filter module connects DC charging rifle by D.C. contactor Seat, the first output end of the input terminal connection central processing unit of the A.C. contactor, the input of the D.C. contactor The second output terminal of end connection central processing unit, the first input end of the output end connection central processing unit of electric energy metering module;
The AC-DC conversion module input connects ac power output mouth, the output end of AC-DC conversion module The power input for connecting central processing unit is powered for central processing unit;
The central processing unit connects card reading module, and central processing unit connects operable display screen, central processing unit Second output terminal connects loud speaker by editable voice module;
The central processing unit is separately connected two-dimensional code scanning by communication module Connection Service device, the server Mechanism and the terminal for scanning special gathering Quick Response Code.
The intelligent DC charging pile, further includes the first breaker and the second breaker, and first breaker connects It is connected between ac power output mouth and A.C. contactor, second breaker is connected to filter module and direct current contact Between device.
The intelligent DC charging pile, further includes lightning protection device, and the lightning protection device is connected to the first breaker and exchanges Between contactor, the third input terminal of the output end connection central processing unit of lightning protection device.
The intelligent DC charging pile further includes strong guard's valve, and the input terminal of the strong guard's valve connects alternating current-direct current The output end of conversion module, the power input of the output end connection central processing unit of strong guard's valve.
The intelligent DC charging pile further includes first voltage acquisition module, the first voltage acquisition module Input terminal is connected between output port of power source and the first breaker, and the output end of first voltage acquisition module connects central processing 4th input terminal of device.
The intelligent DC charging pile further includes second voltage acquisition module, the second voltage acquisition module Input terminal is connected between A.C. contactor and electric energy metering module, and the output end of second voltage acquisition module connects central processing 5th input terminal of device.
The intelligent DC charging pile further includes tertiary voltage acquisition module, the tertiary voltage acquisition module Input terminal is connected between filter module and the second breaker, the output end connection central processing unit of tertiary voltage acquisition module 6th input terminal.
The intelligent DC charging pile further includes the 4th voltage acquisition module, the 4th voltage acquisition module Input terminal is connected between D.C. contactor and DC charging gun platform, and the output end of the 4th voltage acquisition module connects central processing 7th input terminal of device.
The utility model facility has two-dimensional code scanning mechanism, special gathering Quick Response Code and card reader, a variety of way of paying phases In conjunction with, abundant process convenient for users to use, the setting of voice module and loud speaker so that operating process has voice to carry Wake up, prevent not find when user encounters charge fault, to charge failure the problems such as.Further, by breaker, anti- Thunder device and strong guard's valve have fully ensured charging safety.
Description of the drawings
Fig. 1 is the principles of the present invention block diagram.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.
As shown in Figure 1, the utility model includes ac power output mouth, A.C. contactor, electric energy metering module, high frequency Rectification module, filter module, D.C. contactor, DC charging gun platform, central processing unit, AC-DC conversion module, communication module, Server, two-dimensional code scanning mechanism, terminal, card reading module, programmable voice module, loud speaker and operable display screen;Also wrap Include special gathering Quick Response Code;
Ac power output mouth is sequentially connected A.C. contactor and electric energy metering module, the output end of electric energy metering module It is sequentially connected high-frequency rectification module and filter module, alternating current is converted to direct current by high-frequency rectification module and filter module, filter The output end of wave module connects DC charging gun platform, the input terminal connection center of the A.C. contactor by D.C. contactor First output end of processor, the second output terminal of the input terminal connection central processing unit of the D.C. contactor, electric energy meter Measure the first input end of the output end connection central processing unit of module;Electric energy metering module is for measuring electric vehicle or electric vehicle The electric energy number of degrees consumed, and the electric energy number of degrees are transmitted in central processing unit, central processing unit takes according to the calculating of the electric energy number of degrees With.
The AC-DC conversion module input connects ac power output mouth, the output end of AC-DC conversion module The power input for connecting central processing unit is powered for central processing unit;A.C. contactor, D.C. contactor, communication module, clothes Business device, two-dimensional code scanning mechanism, terminal, card reading module, programmable voice module, loud speaker and operable display screen etc. are also required to Power supply, is the prior art, is not shown in Fig. 1, and no longer illustrate one by one in the present embodiment.
The central processing unit connects card reading module, and central processing unit connects operable display screen, central processing unit Second output terminal connects loud speaker by editable voice module;There is operation to remind, report for editable voice module and loud speaker The multiple functions such as alert.
The central processing unit is separately connected two-dimensional code scanning by communication module Connection Service device, the server Mechanism and the terminal for scanning special gathering Quick Response Code.Two-dimensional code scanning mechanism is used to scan the payment two dimension on user mobile phone Code is paid the bill after scanning special gathering Quick Response Code for also available handsets.
The course of work of the utility model is as follows:When user needs charging, by electric vehicle or electric vehicle to be charged Incoming transport charging gun platform, meanwhile, according to the actual demand of oneself, mating IC card, card reading module is selected to read IC card letter Breath, and IC card information is transmitted in central processing unit, central processing unit controls A.C. contactor and connects, and AC charging gun platform is opened Begin to be that electric vehicle or electric vehicle charge.Electric energy metering module acquires the electric energy that electric vehicle or electric vehicle are rushed, and by electric energy Numerical value exports in central processing unit, central processing unit computational costs, and subtract in IC card to expense.In practical application In, electric energy metering module includes current transformer and electric energy meter.
User can also scan special gathering Quick Response Code, or scan the payment code of oneself by two-dimensional code scanning mechanism and pay the bill, The payment information of user is transmitted in central processing unit by communication module, and center control A.C. contactor is connected, AC charging rifle Seat starts to charge for electric vehicle or electric vehicle.The a variety of way of paying of the utility model are combined, and fully facilitate making for user Use process.
In charging process, central processing unit controls programmable voice module and sends out corresponding voice according to charging process Prompt, especially encounters that charging starts, charging complete, payment complete equi-time point, or meet with charge fault, the charging feelings such as unsuccessfully Condition can remind user, user that operable display screen, the data such as inquiry charge volume, charging expense so that described can also be used in time The more friendly facility of alternating-current charging pile.
The intelligent DC charging pile, further includes the first breaker and the second breaker, and first breaker connects It is connected between ac power output mouth and A.C. contactor, second breaker is connected to filter module and direct current contact Between device.Breaker can carry out short circuit and earth leakage protective, and when circuit is excessive in ac power output mouth, the first breaker is disconnected It opens, charging process stops, and protects the safety of the safety and electric vehicle or electric vehicle of intelligent AC charging pile.Work as high-frequency rectification When the DC voltage that module and filter module are converted to is excessive, the second breaker disconnects, and charging process stops, and protects intelligence The safety of the safety and electric vehicle or electric vehicle of energy alternating-current charging pile.After first breaker or the second breaker disconnect, center Processor controls editable voice module and loud speaker carries out corresponding voice alarm.
The intelligent DC charging pile, further includes lightning protection device, and the lightning protection device is connected to the first breaker and exchanges Between contactor, the third input terminal of the output end connection central processing unit of lightning protection device.When voltage in ac power output mouth When excessive, lightning protection device electric discharge, to prevent intelligent AC charging pile, electric vehicle or electric vehicle damage.In the present embodiment, lightning protection Device nominal discharge current is not less than 20kA, and protection voltage level is less than or equal to 1.5 kV.Meanwhile lightning protection device is by discharge current numerical value It is transmitted in central processing unit, which in server, is convenient for the accident analysis in later stage by central processing unit.
The intelligent DC charging pile further includes strong guard's valve, and the input terminal of the strong guard's valve connects alternating current-direct current The output end of conversion module, the power input of the output end connection central processing unit of strong guard's valve.The strong guard's valve Input terminal connects the output end of AC-DC conversion module, the power input of the output end connection central processing unit of strong guard's valve. When generation unexpected situation needs emergent stopping to charge, the power supply of central processing unit can be interrupted by strong guard's valve, center After processor does not work, A.C. contactor returns to reset condition, i.e., the state that ac circuit disconnects, so that charging process is strong Row stops.
The intelligent DC charging pile further includes first voltage acquisition module, the first voltage acquisition module Input terminal is connected between output port of power source and the first breaker, and the output end of first voltage acquisition module connects central processing 4th input terminal of device.The voltage value of first voltage acquisition module acquisition feeds back to central processing unit and does voltage value analysis, is used for Judge whether the output current of ac power output mouth is normal, if abnormal, central processing unit controls editable voice Module and loud speaker send out corresponding audio alert.
The intelligent DC charging pile further includes second voltage acquisition module, the second voltage acquisition module Input terminal is connected between A.C. contactor and electric energy metering module, and the output end of second voltage acquisition module connects central processing 5th input terminal of device.In the Voltage Feedback to central processing unit of second voltage acquisition module acquisition, central processing unit combines the The voltage value of one voltage acquisition module acquisition does voltage value analysis, for judging whether A.C. contactor works normally and contactor The state being presently in, such as abnormal, then central processing unit control editable voice module and loud speaker send out corresponding voice Alarm.
The intelligent DC charging pile further includes tertiary voltage acquisition module, the tertiary voltage acquisition module Input terminal is connected between filter module and the second breaker, the output end connection central processing unit of tertiary voltage acquisition module 6th input terminal.
The voltage value of tertiary voltage acquisition module acquisition is fed back in central processing unit, and central processing unit is according to tertiary voltage The voltage value of acquisition module acquisition, the voltage value of set second voltage module acquisition, the voltage value of first voltage module acquisition are done DC voltage value is analyzed, it can be determined that whether high-frequency rectification module and filter module etc. work normally, if can't detect voltage Value or voltage value are abnormal, then central processing unit control editable voice module and loud speaker send out corresponding audio alert.
The intelligent DC charging pile further includes the 4th voltage acquisition module, the 4th voltage acquisition module Input terminal is connected between D.C. contactor and DC charging gun platform, and the output end of the 4th voltage acquisition module connects central processing 7th input terminal of device.
The voltage value of 4th voltage acquisition module acquisition is fed back in central processing unit, and central processing unit is according to the 4th voltage The voltage value of acquisition module acquisition, voltage value that the voltage value acquired in conjunction with tertiary voltage module, second voltage module acquire, the The voltage value of one voltage module acquisition does DC voltage value analysis, feeds back to central processing unit and does DC voltage value analysis, can be with Judge whether power module, rectification module, particularly D.C. contactor work normally, if can't detect voltage value or voltage value Abnormal, with regard to specification module failure, then central processing unit control editable voice module and loud speaker send out corresponding audio alert.
Finally it should be noted that:The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System;Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should Understand:It still can be with technical scheme described in the above embodiments is modified, either to which part or whole Technical characteristic carries out equivalent replacement;And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims (8)

1. a kind of intelligent DC charging pile, it is characterised in that:Including ac power output mouth, A.C. contactor, electrical energy measurement Module, high-frequency rectification module, filter module, D.C. contactor, DC charging gun platform, central processing unit, AC-DC conversion module, Communication module, server, two-dimensional code scanning mechanism, terminal, card reading module, programmable voice module, loud speaker and operable aobvious Display screen;It further include special gathering Quick Response Code;
Ac power output mouth is sequentially connected A.C. contactor and electric energy metering module, and the output end of electric energy metering module is successively High-frequency rectification module and filter module are connected, the output end of filter module connects DC charging gun platform, institute by D.C. contactor First output end of the input terminal connection central processing unit for the A.C. contactor stated, the input terminal connection of the D.C. contactor The second output terminal of central processing unit, the first input end of the output end connection central processing unit of electric energy metering module;
The AC-DC conversion module input connects ac power output mouth, the output end connection of AC-DC conversion module The power input of central processing unit is powered for central processing unit;
The central processing unit connection card reading module, the operable display screen of central processing unit connection, the second of central processing unit Output end connects loud speaker by editable voice module;
The central processing unit is separately connected two-dimensional code scanning mechanism by communication module Connection Service device, the server With the terminal for scanning special gathering Quick Response Code.
2. intelligent DC charging pile according to claim 1, it is characterised in that:Further include the first breaker and the second open circuit Device, first breaker are connected between ac power output mouth and A.C. contactor, and second breaker connects It is connected between filter module and D.C. contactor.
3. intelligent DC charging pile according to claim 2, it is characterised in that:Further include lightning protection device, the lightning protection device It is connected between the first breaker and A.C. contactor, the third input terminal of the output end connection central processing unit of lightning protection device.
4. intelligent DC charging pile according to claim 3, it is characterised in that:Further include strong guard's valve, described stops by force The power supply of the output end of the input terminal connection AC-DC conversion module of switch, the output end connection central processing unit of strong guard's valve is defeated Enter end.
5. intelligent DC charging pile according to claim 4, it is characterised in that:Further include first voltage acquisition module, institute The input terminal for the first voltage acquisition module stated is connected between output port of power source and the first breaker, and first voltage acquires mould 4th input terminal of the output end connection central processing unit of block.
6. intelligent DC charging pile according to claim 5, it is characterised in that:Further include second voltage acquisition module, institute The input terminal for the second voltage acquisition module stated is connected between A.C. contactor and electric energy metering module, and second voltage acquires mould 5th input terminal of the output end connection central processing unit of block.
7. intelligent DC charging pile according to claim 6, it is characterised in that:Further include tertiary voltage acquisition module, institute The input terminal for the tertiary voltage acquisition module stated is connected between filter module and the second breaker, tertiary voltage acquisition module Output end connects the 6th input terminal of central processing unit.
8. intelligent DC charging pile according to claim 7, it is characterised in that:Further include the 4th voltage acquisition module, institute The input terminal for the 4th voltage acquisition module stated is connected between D.C. contactor and DC charging gun platform, the 4th voltage acquisition mould 7th input terminal of the output end connection central processing unit of block.
CN201721813456.5U 2017-12-22 2017-12-22 A kind of intelligent DC charging pile Active CN207711838U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721813456.5U CN207711838U (en) 2017-12-22 2017-12-22 A kind of intelligent DC charging pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721813456.5U CN207711838U (en) 2017-12-22 2017-12-22 A kind of intelligent DC charging pile

Publications (1)

Publication Number Publication Date
CN207711838U true CN207711838U (en) 2018-08-10

Family

ID=63057297

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721813456.5U Active CN207711838U (en) 2017-12-22 2017-12-22 A kind of intelligent DC charging pile

Country Status (1)

Country Link
CN (1) CN207711838U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116653641A (en) * 2023-05-26 2023-08-29 安徽威斯姆电子科技有限公司 Intelligent charger and charging method for charging lithium battery of electric forklift

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116653641A (en) * 2023-05-26 2023-08-29 安徽威斯姆电子科技有限公司 Intelligent charger and charging method for charging lithium battery of electric forklift

Similar Documents

Publication Publication Date Title
CN205248831U (en) Electric automobile exchanges intelligent charging stake
CN103760454B (en) MOV lightning arrester leakance detection device, long distance control system and method
CN105599633A (en) Self-service intelligent charging pile for electric two-wheel vehicle
CN105162186A (en) Intelligent charging system for electric vehicle and charging method
CN203377624U (en) Communication lithium iron phosphate battery remote communication alarm device
CN106712150A (en) Electric vehicle alternating current intelligent charging pile
US8129860B2 (en) Power over network methods and systems
CN105548780A (en) Electric automobile DC charging pile interface circuit simulator
CN102004213B (en) Direct-detection type intelligent direct-current system insulation and state diagnosis instrument
CN201331555Y (en) Power unit input open-phase detector of high-voltage inverter
CN207711838U (en) A kind of intelligent DC charging pile
CN102856879A (en) Intelligent electric grid protection fee control metering device
CN207719893U (en) A kind of intelligent front end acquisition measure and control device
CN207766012U (en) The direct-current charging post of electric vehicle
CN208101724U (en) A kind of intelligent AC charging pile
CN102074994A (en) Charging device of direct-current (DC) system
CN203377625U (en) Communication lithium iron phosphate battery intelligent management device
CN211075601U (en) Intelligent charging equipment for electric vehicle
CN105279857A (en) Remote fee control electric energy meter and remote fee cotrol system
CN109755886A (en) A kind of box-type substation with warning function
CN207542851U (en) A kind of charging system with battery charger failure detection and warning function
CN213817353U (en) Leakage monitoring switch
CN201956748U (en) Intelligent high-voltage forward electricity purchasing meter
CN207884274U (en) A kind of efficient overvoltage crowbar of electric automobile charging pile
CN105896536A (en) Main wiring system of medium-voltage power distribution cabinet

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant