CN106899059A - Electric bicycle intelligent charging spot and its charge control method - Google Patents

Abstract

The invention relates to an electric bicycle intelligent charging pile and a charging control method thereof. Using the technology of the Internet of Things, through wired or wireless methods, using background software, remote monitoring, parameter modification, centralized management of scattered charging sockets, and solution Existing charging sockets are under independent control without networked centralized management, allowing consumers to check their consumption status and current charging status on the mobile app at any time; it can accurately measure electric energy, voltage, current, power, and the accuracy of electric energy measurement exceeds Level 1.0; a variety of different settlement methods can be used to meet the needs of customers to the greatest extent. The invention utilizes the charging characteristics of the electric bicycle, has full self-checking function, can prevent battery overcharging caused by long-time charging, and prevents battery life from being reduced. Overload protection can also be achieved to prevent heat and fire caused by overloading the socket.

Description

Electric bicycle intelligent charging pile and its charging control method

technical field

The invention belongs to the field of electric bicycle charging equipment, in particular to an electric bicycle intelligent charging pile and a charging control method thereof.

Background technique

The rapid development of the city, the increase of vehicles, the congested roads, the city restricts the use of motorcycles, the rise of electric bicycles, electric bicycles gradually replace motorcycles, as short-distance transportation, electric bicycles use electricity as power, and have no exhaust emissions. Urban environments play a role, but since e-bikes need to be charged to run on power, convenience is an issue.

In urban communities, the floors of the residents are relatively high, and it is impossible to push the car into their own homes. The battery is relatively heavy, and charging is also very inconvenient. Remove the battery and take it home to charge, all of which have potential safety hazards. According to the existing data, there are many fire accidents caused by charging electric bicycles indiscriminately, and there are also charging at home. Due to the quality of the battery and charger, the fire accidents caused by charging are all harmful to the lives and property of residents. cause direct losses.

Nowadays, electric bicycles are developing very rapidly and there are a large number of them. They have gradually become a means of transportation for short distances. Considering the safety of charging, there is an urgent need to build public charging facilities to facilitate electric vehicle owners to charge. However, the investment in public charging piles, how to charge, and management are another topic.

There are two types of existing charging piles, AC charging piles and DC charging piles.

DC charging piles generally use large currents to quickly charge batteries. Although the charging speed is fast, DC charging piles have many types of electric vehicle battery voltages and various interfaces. At present, there is no standard for electric bicycles except for electric vehicles. The accurate control of voltage and current is more complicated, so the design is complicated, the compatibility is poor, the cost is relatively high, and the safety is poor. Due to the high current and fast charging, the battery life is seriously affected. So not suitable for long-term use.

As for the AC charging pile, the charger that comes with the car is used. In addition to the car charging pile, the design of this kind of charging pile is reasonable. At present, most electric bicycle charging piles have simple structures and functions, or have no overload protection, or cannot be fully charged. The service life of the battery, and there are potential safety hazards.

At present, car charging piles on the market are billed through an external dedicated smart energy meter, and the volume is relatively large and the cost is high. However, for electric bicycle charging piles, due to cost considerations, the car charging pile solution cannot be used, and most of them do not have power metering functions. Generally, simple current sampling is used internally to judge the state, and it is impossible to settle the actual settlement. The settlement method is simple, and the settlement is generally carried out according to a fixed period of time, such as: 5 hours/yuan,

Most of the existing electric bicycle charging piles adopt the mode of coin operation, and a few adopt the mode of swiping a card. Withdrawing coins, counting coins or recharging cards requires continuous management by personnel.

Most of the existing charging piles are not connected to the Internet and cannot be remotely monitored and managed. Users cannot know where the charging piles are free, and managers cannot know which charging piles are busy charging and which ones have a higher utilization rate.

At present, with the rapid development of the Internet, electronic payment has gradually matured. These technologies can be used for charging electric bicycles and better management.

Contents of the invention

The technical problems to be solved by the present invention are: to propose an electric bicycle intelligent charging pile and its charging control method, which mainly solves the problem of difficult charging of electric bicycles; solves the problem of troublesome management of existing charging stations; , the problem that the settlement cannot be made according to the actual usage; solve the problem of the defect of the security protection function.

The technical solution adopted in the present invention is: an electric bicycle intelligent charging pile, including a casing, the inner surface of the casing is provided with a display screen and a socket; the casing is provided with a charging control device; the charging control device Including single-chip microcomputer control module, electric energy and electric parameter measurement module, relay state detection module, relay control module, display module, charger access detection module, data storage module, Ethernet communication module and wireless communication module respectively connected with single-chip microcomputer control module circuit module;

The single-chip microcomputer control module controls all components to assist in operation;

The charger access detection module is connected to the socket; it is used to detect whether the charger is effectively inserted, and the relay is allowed to charge only when the contact is good;

The electric energy and electric parameter measurement module is used to measure charging electric energy, collect data on charging characteristics of the charger, and perform data analysis and storage by the single-chip microcomputer control module; it is used for settlement, full judgment, and load judgment;

The relay control block is used for controlling various charging processes, for settlement control and load control;

The relay detection module detects the opening and closing state of the relay, is used to judge the control failure of the relay, and gives instructions;

The data storage module is used to store metering data, operating parameters, and user charging data to prevent data loss;

The Ethernet communication module and the wireless communication module are used for exchanging data with the management system connected to the Internet and the cloud, inputting the user's charging command, and reporting the charging data;

The display module is connected with the display screen circuit on the surface of the shell to display the two-dimensional code of the device, which is convenient for the user to scan and identify, and does not need to paste other identification codes. During the charging process, the current charging status can be displayed.

Further, the charger access detection module of the present invention has a detection circuit; the detection circuits are respectively arranged at both ends of the relay; the detection circuit includes a resistor and a photocoupler, and detects whether the socket has a load enter.

At the same time, the present invention also provides a charging control method for an electric bicycle intelligent charging pile, comprising the following steps:

1) The charger is inserted into the socket, and the charger access detection module automatically detects whether there is a plug inserted and whether the contact between the plug and the socket is in good condition;

2) When the plug is inserted and the contact is good, the backlight of the display screen of the charging pile will light up, and the QR code will be displayed.

3) Scan the QR code through the app software, and upload the charging information to the server;

4) The main control unit of the charging pile receives the charging command fed back by the server and controls the relay to charge the battery;

5) When the battery is fully charged, the main control unit sends a control command to stop charging the battery; and returns the charging information to the server;

6) The server calculates the charging fee based on the charging information and deducts it from the account.

Furthermore, in the present invention, when there is a plug inserted, but the contact is not good, the display screen of the charging pile is not bright, the QR code cannot be displayed, and the code scanning cannot be performed for charging.

Furthermore, the charging information in the present invention includes charging pile information, vehicle owner information, current charging quantity and charging time.

Furthermore, in step 4) of the present invention, the main control unit of the charging pile receives the charging command sent by the server, and the current charging pile detects that the plug and the socket are in good contact, and commands the control unit to open the relay for charging. At the same time, the metering unit starts to measure the charging power. The main control unit collects the power information of the multi-function metering chip, calculates and stores the current power, and judges whether the current charging load is normal. It is charging, and displays the current charging capacity, charging time, charging power and other related charging information.

Furthermore, in step 5) of the present invention, when the electric bicycle battery is fully charged, the charging detection unit detects that the battery is fully charged according to the charging curve of the electric vehicle charger, and the main control unit sends a control command to control the relay. Stop charging, and return the charging information to the cloud server, and the server will perform corresponding settlement according to the actual charging information, and deduct the charging fee from the account.

Furthermore, the present invention also includes that when the charging plug is unplugged during the charging process, the plug detection unit detects that the charging is abnormal, and the plug is unplugged, it will immediately control the relay, stop charging, enter the settlement process, and push message to the owner.

Furthermore, the present invention also includes that if the network is interrupted during the charging process, the charging pile will automatically complete various settlements, and store the settlement records, waiting for the recovery of the network; after the recovery of the network, the settlement will still be carried out automatically.

Furthermore, the plug detection unit of the present invention adopts the method of current detection. When the load is connected to the socket, a weak current will be generated on the load through the control circuit. Judging whether there is a plug inserted; when the plug is loose, the current waveform will also change accordingly, and the single-chip microcomputer judges whether it is loose according to the change of the waveform, and then performs the corresponding operation.

The beneficial effects of the present invention are:

1. Human-computer interaction: The charging pile displays a two-dimensional code on the LCD. It does not display when it is idle, and it is displayed when it is in good contact. The user can use the mobile phone software to scan the code to charge. During the charging process, it displays the current, charging information, and whether the charging is complete. There is also a corresponding prompt for settlement;

2. Mobile app software: used to scan the code to charge, and can use Alipay, WeChat, etc. for payment. It is more convenient to use, no need to prepare additional coins or apply for a card, you can view charging information, charging records and information of idle charging piles, which is convenient for users to use;

3. During the charging process, you can unplug the plug at any time. After the plug is detected, it will automatically settle the bill;

4. Diversified settlement functions: The charging socket has a built-in imported high-end metering chip, which can be used to settle the charging fee according to the electric energy, and can also be charged according to the time. Meet the needs of users who need accurate billing;

5. Centralized management: Managers can directly view charging pile information on the web, including real-time current status, historical charging records, user recharge records and other historical usage conditions, making it easier to conduct financial management, query turnover, and power consumption management. , It is also convenient for maintenance, and it also saves the cost of managers taking coins or recharging personnel on site. You can also set the unit price and settlement method at any time.

Description of drawings

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

Fig. 1 is a structural schematic block diagram of the present invention;

Fig. 2 is a communication diagram of the present invention;

Fig. 3 is a diagram of the process of use of the present invention;

Fig. 4 is a detection flow chart of the present invention;

Fig. 5 is a connection diagram of the detection circuit of the present invention.

detailed description

The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

The invention belongs to the field of charging equipment for electric bicycles, and relates to a charging socket and a charging pile. To be precise, it is a network-connected electric bicycle intelligent charging pile and its control. method.

The present invention utilizes the technology of the Internet of Things, uses background software in a wired or wireless manner, performs remote monitoring, parameter modification, and centralizes management of scattered charging piles to solve the problem that the existing charging piles are under independent control and do not carry out networked centralized management situation,

Consumers can check the idle charging piles through the mobile APP at any time.

The invention allows the consumer to use the mobile phone to control charging, and to check his consumption status and current charging status on the mobile phone app at any time; consumption is clear and clear.

It meets the needs of some customers for accurate billing.

The present invention can adopt a variety of different settlement methods, and the charging time or charging amount can be settled according to the actual amount, and also can be settled by time and power, so as to satisfy the needs of customers to the greatest extent. There will be no loss caused by the current coin-operated charging pile being unplugged during the charging process.

The invention utilizes the charging characteristics of the electric bicycle, has the functions of full self-checking and full automatic settlement, and can also prevent battery overcharging caused by long-time charging and reduce battery life.

The present invention can also achieve overload protection to prevent heat generation and fire caused by overloaded sockets.

As shown in Figure 1, the present invention is made up of following modules:

The charger access detection module is used to detect whether the charger is effectively inserted, and only when the contact is good, the punching relay is allowed to charge.

The electric energy and electric parameter measurement module is used to measure the charging electric energy, collect data on the charging characteristics of the charger, and analyze and store the data by the single-chip microcomputer. Used for settlement, full judgment, and load judgment.

Relay control block, used to control various charging processes, used for settlement control, load control,

The relay detection module detects the opening and closing state of the relay, and is used to judge the control failure of the relay and give instructions

The data storage module is used to store metering data, operating parameters, and user charging data to prevent data loss.

The Ethernet and WIFI modules are used to exchange data with the management system connected to the Internet and the cloud, input charging instructions from users, and report charging data.

The display module displays the two-dimensional code of the device, which is convenient for users to scan and identify. There is no need to paste other identification codes. During the charging process, the current charging status can be displayed.

The single-chip microcomputer control module, the core of the entire product, controls all components to assist in operation.

The communication method is shown in Figure 2. The server and the charging pile are connected and communicated in a wired or wireless manner. After the charging pile is initialized, it actively reports its own operating data to the server through the network at regular intervals. If there is an event trigger, it will be reported to the server at any time according to the event trigger, and the Web terminal and mobile app software will read the information of the charging pile from the server through the network. When the mobile app software scans the code to charge, the request command is sent to the server through the network, and the server then sends a permission command to control the charging pile to open the relay to allow charging.

The usage process is shown in Figure 3. After inserting the charger plug, the plug detection unit detects that the plug is inserted, the charging pile screen wakes up and lights up, and scans the code with the mobile app software. If the balance is insufficient, it will automatically jump to the payment interface. After payment, the control command commands the relay of the charging pile to turn on and start charging. When it is about to be fully charged, the mobile app software will receive a notification that it is about to be fully charged. When the charge is fully charged, the relay will be automatically disconnected for automatic settlement.

If the plug is unplugged during charging, the relay will be automatically disconnected, and the mobile app will receive a push message. It can be judged whether it is fully charged and automatically cuts off the power according to whether it has received a push message that it is about to be fully charged.

Specific steps are as follows;

1. The self-inspection of the charging pile is completed, the backlight is turned off, and it is waiting for charging.

2. The charging pile enters the state of waiting for charging. At this time, the relay is in the off state, and the socket does not output electric energy. Waiting for the owner of the electric bicycle to insert the charger that comes with the electric bicycle into the socket of the charging pile. Car owners can check the location of free charging piles at any time through the mobile APP, which is convenient for car owners to choose a garage that can be charged.

3. The charging pile plug detection unit can automatically detect whether the charger plug is inserted into the charging socket, and detect whether the socket and the plug are in good contact.

4. When a plug is inserted and the contact is good, the backlight of the LCD screen of the charging pile will light up, and a QR code will be displayed, prompting the user to start charging. If the contact is not good, the LCD will not light up, and the QR code cannot be displayed, and the scanning and charging will not be possible. At this time, the plug is safe, and there is no spark when inserted into the charger plug, which can avoid the hidden danger of the socket heating during charging.

5. The owner of the electric vehicle opens the mobile phone charging APP to ensure that the balance in the account is sufficient, opens the code scanning tool that comes with the charging APP, selects or defaults the current charging time, charging capacity, scans the LCD QR code of the charging pile, or enters the charging pile ID number, the balance is insufficient, charging will not be allowed, and recharging is required.

6. The mobile phone charging APP uploads the charging pile information, car owner information, current charging power, charging time charging information, etc. to the server by scanning the QR code, and the server software uses the communication channel established between the charging pile and the server to send to the main control unit of the charging pile to authorize it to charge.

7. The main control unit of the charging pile receives the charging command sent by the server, and the plug and socket detected by the current charging pile are in good contact, and commands the control unit to turn on the relay for charging. At the same time, the metering unit starts to measure the charging power, and the main control unit collects The power information of the dedicated multi-function metering chip, the current power is calculated and stored, and it is judged whether the current charging load is normal. If it exceeds the set load, charging will be stopped. The display screen of the charging pile shows that it is currently charging, and displays the current charging power and charging time. Charging power and other related charging information. And the current charging status of the cloud server is reported regularly through the heartbeat, including relay switch status, charging load, charging power, power and other information. The owner can check the current charging status through the mobile APP at any time.

8. When the battery of the electric bicycle is fully charged, the charging detection unit detects that the battery is full according to the charging curve of the electric vehicle charger, the main control unit issues a control command, controls the relay, stops charging, and returns the charging information to the cloud service According to the charging information such as the actual charging time and charging quantity, the server will perform corresponding settlement and deduct the charging fee from the account. Form a charging consumption record and push a message to the car owner. The car owner can query his historical consumption record. Really achieve charging according to actual settlement. Due to the use of the Internet for interaction, a certain threshold can also be set during the charging process, and relevant reminders can be carried out.

9. During the charging process, if the charging plug is unplugged, the plug detection unit detects that the charging is abnormal and the plug is unplugged, it will immediately control the relay, stop charging, and enter the settlement process. And push the message to the owner.

10. If the network is interrupted during the charging process, the charging pile can also automatically complete various settlements and store settlement records, waiting for the recovery of the network. After the recovery of the network, the settlement will still be carried out automatically.

The present invention adopts the method of current detection. When the load is connected to the socket, a weak current will be generated on the load through the control circuit. The current is so small that the human body can bear it. The change of the waveform judges whether there is a plug inserted. When the plug is loose, the current waveform will also change accordingly, and the single-chip microcomputer can accurately judge whether it is loose according to the change of the waveform, and then perform corresponding operations.

The detection process is shown in Figure 4. When the socket is not plugged in, there is no load at this time, the waveform generated by the detection circuit is a straight line, and the microcontroller control module does not control it. When the plug of the charger is plugged into the external load, the waveform generated by the detection circuit is a rectangular wave. At this time, the single-chip control module determines that the plug has been plugged into the load. At this time, the control relay is turned on to allow external power supply. This circuit achieves the purpose of supplying power only when the plug is connected to the load.

As shown in Figure 5, add a detection circuit at both ends of the relay of the socket to detect whether there is a load connected to the socket. When a load is connected, a square wave can be detected, indicating that the load is connected. If the relay is disconnected state, the control is closed, allowing the charging socket to supply power. When the plug is pulled out, no square wave is generated, it is detected that no load is connected, and the control relay is disconnected. Realize the purpose of plugging in the plug to allow power supply, and pulling out the plug to disconnect the power supply. It can be controlled automatically, manually, or in other ways.

Through this method, it can accurately judge whether there is a load connected to the socket, and can judge whether the plug is inserted properly and whether it is loose. Compared with the existing infrared detection and micro-motion device detection, it is more accurate and effective, and will not be affected by external dust. The structure is simpler and the installation is convenient.

What is described in the above description is only the specific implementation of the present invention, and various illustrations do not limit the essence of the present invention. Those of ordinary skill in the art can modify or modify the previous specific implementation after reading the description. variations without departing from the spirit and scope of the invention.

Claims (10)

1. a kind of electric bicycle intelligent charging spot, including shell, it is characterised in that：Described inner surface of outer cover is provided with display Screen and socket；Battery charge controller is provided with described shell；Described battery charge controller includes Single-chip Controlling mould Block and the electric energy being connected with single chip control module circuit respectively and electrical parameter measuring module, relay status detection module, Relay control module, display module, charger access detection module, data memory module, ethernet communication module and nothing Line communication module；

Described single chip control module, controls all parts to assist operation；

Described charger accesses detection module, is connected with socket；It is good in contact for detecting whether charger effectively inserts In the case of, just allow relay to be charged；

Described electric energy and electrical parameter measuring module, for being measured to rechargeable electrical energy, the charge characteristic to charger is carried out Data acquisition, data analysis and storage are carried out by single chip control module；For settling accounts, full of judgement, load judges；

Described Control block, the control for carrying out various charging processes, for settling accounts control, spatial load forecasting；

Described relay test module, detects the folding condition of relay, for judging the control failure of relay, and is given Indicate；

Described data memory module, for continuous data, operational factor, the charge data of user to be stored, prevents number According to loss；

Described ethernet communication module and wireless communication module, for and be connected into the management system in internet and high in the clouds and enter The exchange of row data, the charging instruction of incoming user, and report charge data；

Described display module, is connected with the display screen circuit of case surface, shows the Quick Response Code of this equipment, facilitates user to carry out Scanning recognition, it is not necessary to paste other identification codes again, in charging process, can show present charge state.

2. electric bicycle intelligent charging spot as claimed in claim 1, it is characterised in that：Described charger accesses detection mould Block has detection circuit；Described detection circuit is respectively arranged at the two ends of relay；Described detection circuit include resistance with And photoelectrical coupler, whether test socket has to load is accessed.

3. a kind of charge control method of electric bicycle intelligent charging spot, it is characterised in that comprise the following steps：

1) in charger insertion socket, whether plug detection unit automatic detection has plug to insert and plug and female contact state It is whether good；

2) when there is plug to insert, and contact is good, and charging pile display backlight is lighted, two-dimensional code display,

3) by app software scans Quick Response Codes, charge information is uploaded to service end；

4) charging instruction and control relay of charging pile main control unit reception service end feedback charge to battery；

5) after battery is full of, main control unit sends control instruction to be stopped charging battery；And believe this charging Breath is back to service end；

6) service end calculates charging expense and is deducted from account according to charge information.

4. the charge control method of electric bicycle intelligent charging spot as claimed in claim 3, it is characterised in that：When there is plug Insertion, but contact bad, charging pile display screen does not work, it is impossible to two-dimensional code display, it is impossible to carry out barcode scanning charging.

5. the charge control method of electric bicycle intelligent charging spot as claimed in claim 3, it is characterised in that：Described fills Power information includes charging pile information, owner information, this charge capacity and charging interval.

6. the charge control method of electric bicycle intelligent charging spot as claimed in claim 3, it is characterised in that：Described step It is rapid 4) in, charging pile main control unit receives the charging instruction that service end sends, the plug and socket that current charging pile is detected Contact is good, and command control unit is opened relay and charged, while metering units proceed by charge capacity metering, master control Unit gathers the information about power of Multifunctional measuring chip, and current power is calculated and stored, and judges whether current charging load is normal, If it exceeds assumed load, will stop charging, charging pile display screen shows and currently charge, and shows the current electricity that charges The related charge information such as amount, charging interval, charge power.

7. the charge control method of electric bicycle intelligent charging spot as claimed in claim 3, it is characterised in that：Described step It is rapid 5) in, after electric vehicle and bicycle battery is full of, charging detection unit according to the charging curve of electric motor car charger detect It is full of to battery, main control unit sends control instruction, control relay stops charging, and this charge information is returned into cloud Service end, service end is accordingly settled accounts according to this actual charge information, and this charging expense is deducted from account.

8. the charge control method of electric bicycle intelligent charging spot as claimed in claim 3, it is characterised in that：Also include working as In charging process, if charging plug is unplugged, plug detection unit detects charging exception, and plug is unplugged, will immediately Control relay, stops what is charging, and into settlement process, and PUSH message is to car owner.

9. the charge control method of electric bicycle intelligent charging spot as claimed in claim 3, it is characterised in that：If also including Suspension in charging process, charging pile is automatically performed various clearing, and stores settlement records, waits the recovery of network；Network recovery Afterwards, still can be settled accounts automatically.

10. the charge control method of electric bicycle intelligent charging spot as claimed in claim 3, it is characterised in that：Plug is examined Method of the unit using current detecting is surveyed, after load is accessed on socket, by controlling circuit, can be produced in load faint Electric current, by detecting circuit, the change according to the current waveform for flowing through determines whether that plug is inserted to single-chip microcomputer；When plug loosens When, current waveform can also produce corresponding change, and single-chip microcomputer judges whether to loosen according to the change of waveform, then performs corresponding Operation.