CN102868194B - Charging pile for network electric vehicle - Google Patents

Abstract

The invention discloses a network electric vehicle charging pile, which includes a terminal main control CPU module, a GPRS communication module, an electric energy metering module, an LED status display module, a radio frequency identification card reader module, a power supply control module, and a light indicating module; A charging pile that requires a display screen and buttons realizes the function of a charging pile at the same time, reducing costs; the operation is simple and convenient, safe and reliable, and the user is completely isolated from the charging pile to protect the safety of the charging pile; a small amount of data information is exchanged through the wireless network GPRS, saving The cost of hardware lines, the display function is transferred to the user's mobile phone and computer through the GPRS network, and the user information is protected to the greatest extent; data processing is run in the background of the charging master station, and the electricity bill calculation is accurate and reliable, which reduces the task of the charging pile terminal CPU , to ensure the reliable operation of the charging pile terminals; the master station conducts coordinated scheduling according to the charging pile terminals in the area, ensuring the reliable operation of the power grid and the safe charging of users.

Description

A network electric vehicle charging pile

technical field

The invention relates to the electrical field, in particular to a network electric vehicle charging pile.

Background technique

In recent years, countries around the world are competing to increase the development and research of electric vehicles. Because electric vehicles have the characteristics of no (low) pollutant emissions, high energy utilization, sustainable development, and convenient maintenance, large-scale popularization of electric vehicles is one of the most effective ways to alleviate air pollution and energy shortages. At present, the resistance and obstacles facing the industrialization of electric vehicles include cost, price, performance reliability, durability, etc., and related infrastructure construction must also be carried out simultaneously. All countries must establish efficient vehicle charging and swapping station networks as soon as possible to facilitate electric vehicle users. Charge. The construction of efficient, safe and reliable charging piles and charging stations for centralized charging of electric vehicles has become one of the key links in the promotion of electric vehicles, and is an indispensable energy service infrastructure for the large-scale industrialization of electric vehicles.

With the promotion and application of electric vehicle charging piles, we have found some problems in actual use. There are a large number of charging piles in electric vehicle charging and swapping stations. Most of these charging piles are equipped with input and output components such as LED displays, LCD touch screens, and buttons. In actual use, most charging piles are placed in unattended areas. Places are vulnerable to man-made damage, and incidents of damage to charging piles across the country occur from time to time. The LED display, LCD touch screen, and buttons add unstable factors to the charging pile. When the LED display, LCD touch screen, and buttons on the charging pile fail, the entire system cannot work normally. At the same time, when the electric vehicle user finds the charging pile, he finds that the charging pile has been occupied, which wastes the user's time and energy, and the user does not know whether the charging pile is available in the distance.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems by providing a network-based electric vehicle charging pile without a display screen and buttons, which completely separates the user from the charging pile in form. The working status of the charging pile is indicated by the light or voice information on the charging pile, and the master station sends the user information to the user through the GPRS network through the mobile phone or email, and the user can get charging related information. Remove the display screen and input button on the charging pile, add lights or voice instructions, read the user ID through radio frequency identification, and deliver more real-time calculations and data processing to the master station, reducing the work tasks of the terminal CPU and ensuring the terminal charging pile reliable operation. At the same time, a light prompt system is installed on the upper part of the charging pile, so that users can know whether the charging pile is available from a long distance, saving users time. This system adopts a system architecture of one master and multiple slaves, that is, one master station controls multiple charging pile terminals, and the amount of data transmitted through the GPRS network is small, and the mobile communication cost is greatly reduced. It is characterized in that the electric vehicle charging pile does not contain display and buttons, indicates the working process status of the charging pile through the light on the charging pile or voice information, and can remotely indicate to the customer whether the charging pile is available.

In order to achieve the above purpose, this manual uses the light to indicate the working status of the charging pile as an example to introduce related technical solutions:

A network electric vehicle charging pile, including a terminal main control CPU module, a wireless communication module, an electric energy metering module, an LED status display module, a radio frequency identification card reader module, a power supply control module, and a light indication module; the terminal main control CPU module Through the communication interface, other modules are controlled; the wireless communication module connects the CPU module of the electric vehicle charging pile terminal with the host computer system of the dispatching master station to realize wireless communication; the electric energy metering module is realized by a high-precision electronic multifunctional intelligent metering module , metering the electric energy passing through the power control module, the metering module communicates with the terminal main control CPU module through the communication interface, and uploads real-time electric energy metering data; the LED state display module displays different working states through different light-emitting diodes; the radio frequency identification The card reader module reads the user ID on the IC card, and directly transmits the user ID information back to the terminal CPU control module through the communication interface, and the CPU control module uploads it back to the main station. The transaction method of completing one charge by reading the card twice, the user swipes the card for the first time, the main station performs a balance inquiry and locks the card, the user swipes the card for the second time to end charging, the main station settles the charging amount, and unlocks the card at the same time; The above-mentioned light indicating module indicates whether the charging pile is available through the color of the light on the upper part of the charging pile.

The power control module is a terminal main control CPU module that controls the pull-in of the intermediate relay coil through GPIO (general purpose input and output interface), so as to control the on-off of the AC contactor to control the electric energy of the charging pile.

The wireless communication module is a GPRS communication module.

The network electric vehicle charging pile of the present invention, as shown in Figure 1, the user can indicate the state of the charging pile according to the 5 LED indicators on the charging pile panel: the charging pile is normally ready, that is, the standby state, user card identification, electric vehicle The colors of the five indicator lights can be set to A, B, C, D, and E in sequence during charging, charging of the electric vehicle, and failure. A lighting system is placed on the top of the charging pile to inform users whether the charging pile is available. When the upper area of the charging pile turns into A color, it means that the charging pile is available. When the upper area of the charging pile turns into E color, it means that the charging pile is unavailable. The master station controls the charging piles in the entire area through the GPRS network, and sends real-time information to the user's mobile phone or email through the GPRS network to ensure the user's information security. The main station interacts with the electric vehicle charging pile terminal system, controls the power switch of the charging pile terminal, settles the user balance in the background, and puts more calculation processing on the main station to ensure the reliable and safe operation of the charging pile terminal.

Beneficial effects of the present invention:

1. It does not require a charging pile with a display screen and buttons, and realizes the function of a charging pile at the same time, reducing the cost.

2. The operation is simple and convenient, safe and reliable, and the user is completely isolated from the charging pile to protect the safety of the charging pile.

3. A small amount of data information is exchanged through the wireless network GPRS, which saves the cost of hardware lines, and the display function is transferred to the user's mobile phone and computer through the GPRS network, and the user information is protected to the maximum extent.

4. Data processing runs in the background of the charging master station, and the electricity bill calculation is accurate and reliable, which reduces the task of the charging pile terminal CPU and ensures the reliable operation of the charging pile terminal.

5. A network electric vehicle charging pile of the present invention, the main station performs coordinated scheduling according to the charging pile terminals in the area, ensuring reliable operation of the power grid and safe charging for users.

Description of drawings

Figure 1 Schematic diagram of the charging pile panel.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

The network electric vehicle charging pile of this embodiment includes a terminal main control CPU module, a GPRS communication module, an electric energy metering module, an LED status display module, a radio frequency identification card reader module, a power supply control module, and a light indication module; The CPU module uses a chip based on the ARM core to control other modules of the terminal through rich communication interfaces; the GPRS module connects the CPU module of the electric vehicle charging pile terminal with the upper computer system of the dispatching master station to realize wireless communication; the electric energy metering module It is realized by a high-precision electronic multi-functional intelligent metering module, which measures the electric energy passing through the power supply control module. The metering module communicates with the terminal main control CPU module through the communication interface, and uploads real-time electric energy metering data; the LED status is displayed through different light-emitting diodes. Display different working states; The radio frequency identification card reader module is to read the user ID on the IC card, and the user ID information is directly passed back to the terminal CPU control module through the communication interface, and the CPU control module is uploaded back to the master station, and the master station according to the user ID The balance information controls the charging of the charging pile, and the transaction method of completing one charge is completed by reading the card twice. The user swipes the card for the first time, and the master station performs balance query and locks the card. The user swipes the card for the second time to end charging, and the master station settles charging amount, and unlock this card at the same time; the light indicator module indicates whether the charging pile is available through the light color on the upper part of the charging pile; the power control module is the terminal main control CPU module that controls the intermediate relay coil through GPIO (general-purpose input and output) The pull-in, so as to control the on-off of the AC contactor to control the electric energy of the charging pile.

The network electric vehicle charging pile in this embodiment indicates the status of the charging pile through the LED indicator light, and indicates whether the charging pile is available to users who are not using the charging pile through the lighting system on the top of the charging pile. The main control CPU module of the charging pile terminal is connected with the radio frequency identification card reader module through two-way communication through the communication interface. The main control CPU module of the charging pile terminal is connected with the GPRS module through two-way communication through the communication interface. The module is connected by two-way communication, and the terminal main control CPU module is connected to the power control module, LED status display, and light indication system by one-way communication through common input and output pins. The master station is connected with the GPRS module for two-way communication through the communication interface. A network electric vehicle charging pile. There are many high-frequency signals in the hardware circuit. The hardware circuit is built with various modules. Each module is a separate circuit board to avoid mutual interference. Pins are connected for communication and control.

When the user finds the available charging pile according to the knowledge system of the lighting on the top of the charging pile. According to the accompanying drawing 1, the colors of the five indicator lights can be sequentially set to green, purple, blue, yellow and red. The user charging process is the process indicated by the arrow on the panel. When the standby light of the charging pile is flashing and no one is using it, the light on the top of the charging pile will be green, notifying the user that the charging pile is available. According to the indicator light on the charging pile panel, when the standby light on the charging pile panel is flashing and the fault light is off, it means that the charging pile is normal, and the user can use the charging pile to charge the electric vehicle. When the charging pile is occupied by other users, the light on the top of the charging pile will be red, informing the user that the charging pile is unavailable. When the charging pile is faulty, the fault light will be on, and the light on the top of the charging pile will be red, notifying the user that the charging pile cannot be used, and at the same time, the charging pile will send the fault information back to the main station. The working method of the charging pile is to complete a charge by swiping the card twice. When the user swipes the card for the first time, the radio frequency identification card reader module transmits the information on the user's IC card to the terminal main control CPU module through the communication interface, and the terminal main control CPU module receives the information After the preliminary judgment of the data, the data is transmitted to the GPRS network through the GPRS module, and the master station analyzes and processes the data transmitted by the terminal main control CPU through the GPRS network. After the user swipes the card, according to the accompanying drawing 1, the standby light on the panel of the charging pile still flickers, indicating that the user's ID card is unavailable, and an indication is given to the user. When the user information does not meet the charging requirements, the master station will send information to the user's mobile phone or send an email to the user through the GPRS network, inform the user of the information that cannot be charged, and notify the user to recharge or replace the ID card in time. After the user information meets the charging requirements, the main station sends back to the terminal main control CPU module through the GPRS network to start charging. After the terminal main control CPU module receives the charging command, it outputs the charging level on the GPIO pin of the CPU module to control the intermediate relay. , so that the power can be turned on by the pull-in of the AC contactor coil, the user can insert the electric vehicle charging plug into the charging socket, the charging light on the charging pile panel will light up, and at the same time, the electric energy metering module will be turned on to measure the charging electric energy of the user. After the user swipes the card for the second time or the electric vehicle is fully charged, the terminal CPU module disconnects the charging power supply, and after the end light on the charging pile panel flashes for 30 seconds, the standby light turns green and flashes, the end light goes out, and the light indication system on the top of the charging pile changes to Green indicates that the charging pile is available, waiting for the next charging, and the value of the electric energy metering module is uploaded back to the main station, and the background settlement of the main station completes the entire automatic charging process of electric vehicles.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (1)

1. a network electric automobile charging pile, is characterized in that, comprises terminal master cpu module, wireless communication module, electric energy metering module, LED state display module, radio frequency identification card reader module, energy supply control module, lamplight pointing module; Described terminal master cpu module, by communication interface, controls other modules; Electric automobile charging pile terminal master cpu module and scheduling station master system couple together and realize wireless telecommunications by described wireless communication module; Described electric energy metering module is realized by high-precision electronic insertion multifunctional intellectual metering module, and measure the electric energy through energy supply control module, metering module, by communication interface and terminal master cpu module communication, uploads real-time electric energy measurement data; Described LED state display module, by the operating state that different diode displaying is different; Described radio frequency identification card reader module reads user ID on IC-card, user ID information is directly passed back terminal master cpu module by communication interface, terminal master cpu module passes main website back, main website carries out charging according to user balance information to charging pile and controls, and adopts the mode of doing business that twice Card Reader completes once to charge, and user swipes the card first time, main website carries out inquiry into balance and is lived by this kayser, user's second time is swiped the card complete charge, and the main website clearing charging amount of money, unlocks this card simultaneously; Whether described lamplight pointing module can be used by charging pile upper part lamp light color instruction charging pile; Described energy supply control module is that terminal master cpu module controls the adhesive of auxiliary relay coil by GPIO, thus the break-make controlling A.C. contactor reaches the control to charging pile electric energy; Described wireless communication module is GPRS communication module;

After user card punching, on charging pile panel, standby lamp still glimmers, show that the ID card of user is unavailable, to user one instruction, when user ID information does not meet charging requirement, main website is sent information on user mobile phone or to user by GPRS network and sends Email, the information notification user that cannot charge, notify that user supplements with money in time or changes ID card, after user ID information conforms charging requirement, main website beams back terminal master cpu module through GPRS network and opens charging, after terminal master cpu module receives charging instruction, the GPIO pin of terminal master cpu module exports charging level and controls auxiliary relay adhesive, thus pass through the adhesive power-on of ac contactor coil, electrical automobile charging plug is inserted into charging socket by user, on charging pile panel, rechargeable lamp lights, open the rechargeable electrical energy of electric energy metering module metering user simultaneously, after user's second time is swiped the card or electric automobile is full of electricity, terminal master cpu module disconnects charge power supply, charging pile panel terminate after lamp glimmers 30 seconds, standby lamp becomes green flicker, terminate lamp to extinguish, charging pile top lamplight pointing module becomes green and shows that charging pile can be used, wait for and charging next time, and numerically pass electric energy metering module back main website, main website backstage clearing, complete whole electric automobile automatic charging process.