An intelligent and safe charging device for electric bicycles based on Dingding charging cabinet

Abstract

The present invention discloses an intelligent and safe charging device for electric bicycles based on a DingDing charging cabinet, comprising a charging cabinet device, a network cloud server and an APP / WEB terminal. The charging cabinet device of the present invention provides a more comprehensive supervision platform, and terminal users can query and recharge by adding a WeChat public account and receive prompt information on whether charging is completed, whether the power is off and the reason for the power off; cooperative agents can supervise and settle the charging cabinet devices in the business area through the APP / WEB terminal platform, and the mobile and diversified supervision carriers make it more convenient and worry-free for users; the data interaction between the charging cabinet device and the network cloud server is carried out in a way that the charging cabinet actively reports, and uploads at a fixed time of a few minutes under normal operating conditions without wasting traffic. Under alarm conditions, the data is uploaded immediately and uploaded quickly at a fixed time, thereby ensuring the timeliness and reliability of information push to the greatest extent.

Description

Technical Field

[0001] The invention relates to the technical field of charging, and in particular to an intelligent and safe charging device for an electric bicycle based on a DingDing charging cabinet. Background Art

[0002] With the rapid development of the Internet industry, online food ordering and online shopping have become an indispensable part of people's daily lives. Such industries have spawned a large number of riders and couriers, and electric bicycles have become a necessary means of transportation for postal, logistics, takeaway and other industries due to their advantages of energy saving, environmental protection and convenience. However, while electric bicycles bring convenience, they also bring safety risks.

[0003] In recent years, there have been frequent cases of electric bicycles catching fire during charging, causing casualties and property losses. Local government departments have also issued notices and documents to strengthen fire prevention work during electric bicycle charging, requiring the coordinated promotion of centralized parking and charging facilities for electric bicycles, and strict regulation of parking and charging management of electric bicycles.

[0004] For the food delivery and express delivery industries, as well as communities, parks and commercial buildings that do not have supporting electric bicycle parking sheds, the safety hazard to be solved is the fire safety problem of centralized charging of batteries at the stations. In recent years, some projects have attempted to carry out intelligent transformation of electric bicycle charging, but have been trapped by some technical bottlenecks, such as: limited to the optimization of the payment link, upgrading the coin socket to a code scanning socket, and being powerless in key areas such as battery management and power management; unable to achieve true intelligence, unable to integrate charging modules, and unable to eliminate the hidden dangers brought by inferior chargers; dust and water resistance performance is not up to standard, and it is impossible to truly achieve outdoor safe charging. In response to this problem, we proposed the "intelligent and safe charging device for electric bicycles based on Dingding charging cabinet", which is dedicated to providing battery storage and safe charging solutions for logistics vertical fields such as takeout and express delivery. Dingding charging cabinet has mastered the core technology of intelligent battery identification and adaptive dynamic power control, supports safe charging of electric vehicle batteries of different types and specifications, and can also identify battery specification parameters. On the basis of accurate identification, it can adaptively output voltage and current, dynamically adjust power supply parameters, identify when the battery is full, and automatically cut off the power. Dingding charging cabinet is positioned to lead a new model of outdoor public charging. It is rainproof and lightning-proof, can be used around the clock, and can be placed outdoors according to local conditions, solving property problems such as building awnings. It replaces traditional charging equipment with public charging cabinets and eliminates the fire hazard of electric bicycle charging from the source. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent and safe charging device for electric bicycles based on a DingDing charging cabinet to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent and safe charging device for electric bicycles based on a Dingding charging cabinet, comprising a charging cabinet device, a network cloud server and an APP / WEB terminal. The charging cabinet device, as an application entity, is mainly responsible for intelligent charging management and control. A plurality of charging compartments are arranged inside the charging cabinet device, and the charging cabinet device is connected to the network cloud server via GPRS wireless communication. The network cloud server, as a transfer station for application data, is responsible for forwarding, calculating and storing big data functions. The APP / WEB terminal, as an important application interface for customers, uses the network cloud server as the data background to remotely visualize the application of the charging cabinet, and realize remote control, supervision and intelligent reminder services.

[0007] The charging cabinet device is bidirectionally electrically connected to the network cloud server, the network cloud server is bidirectionally electrically connected to the APP / WEB end, and the output end of the APP / WEB end is connected to the input end of the charging cabinet device;

[0008] Each compartment has a charging circuit, which is protected from dangerous electric sparks by an arc-extinguishing electrical fire protection module. The opening and closing of each circuit is controlled by the single-chip main control module. At the same time, the A / D conversion acquisition module collects the total circuit voltage, current, leakage current, power, frequency, electric energy, temperature, and the temperature in each charging compartment, the current of the circuit and other data to obtain high-precision power data. The GPRS wireless communication module uploads the data to the network cloud server at an adjustable frequency at regular intervals to monitor the charging device. If various abnormal signals appear, the signal will be immediately uploaded to the network cloud server, and uploaded multiple times at a faster frequency to ensure real-time and effective transmission of information.

[0009] The charging cabinet device is equipped with an arc-extinguishing electrical fire protection module, an anti-lightning surge EMC power supply protection module, a single-chip main control module, an optoelectronic coupling and relay drive control module, a total / branch electrical parameter acquisition module, an A / D conversion acquisition module, a 4G wireless communication module, a GPS positioning module, and a BLE Bluetooth communication module;

[0010] The output end of the A / D conversion acquisition module is connected to the input end of the single-chip computer main control module, and the single-chip computer main control module is bidirectionally electrically connected to the GPPS wireless communication module, the GPS positioning module and the BLE Bluetooth communication module through the TTL communication module; the output end of the anti-lightning surge EMC power supply protection module is connected to the input end of the single-chip computer main control module; the output end of the single-chip computer main control module is connected to the input end of the photoelectric coupling and relay drive control module through the I / O control module; the single-chip computer main control module is bidirectionally electrically connected to the arc-extinguishing electrical fire protection module through the RS485 communication module, and the single-chip computer main control module is bidirectionally electrically connected to the total / branch electrical parameter acquisition module through the SPI communication module.

[0011] Preferably, the arc-extinguishing electrical fire protection module is used to realize the arc-extinguishing power-off function, accurately capture the electric sparks caused by line aging, water ingress in rainy days or illegal operation, make a judgment, and then cut off the power supply in time to protect the line safety.

[0012] Preferably, the anti-lightning surge EMC power supply protection module provides a clean, stable and reliable working power supply for the charging cabinet device.

[0013] The design of the EMC power protection circuit has passed the test of various EMC interference equipment, effectively ensuring that the charging cabinet device will not stop working or operate abnormally due to the influence of harsh environment.

[0014] Preferably, the single-chip microcomputer main control module is responsible for the collection and management of all important data information of the charging cabinet device. It establishes a connection with the arc-extinguishing electrical fire protection module, 4G wireless communication module, GPS positioning module and BLE Bluetooth communication module in a serial communication manner, and performs data interaction in a timely and efficient manner to ensure the real-time nature of various data information.

[0015] Preferably, the photoelectric coupling and relay drive control module includes a charging compartment control module, a charging control module and an automatic fire extinguishing control module;

[0016] The charging warehouse control module is used to control the opening of each door of the charging cabinet; the charging control module is for the on / off control of the AC power output in each compartment of the charging cabinet; the automatic fire extinguishing control module is for the on / off control of the fire extinguisher pipe nozzles in each compartment of the charging cabinet. The optocoupler device has good electrical insulation and anti-interference capabilities. It is connected to the relay, and the control signal is output by the single-chip main control module. Through the optocoupler device, it drives the on / off state of the relay, thereby realizing the application of charging warehouse control, charging control, and automatic fire extinguishing control.

[0017] Preferably, the total / branch electrical parameter acquisition module is used to realize the acquisition of the total voltage, current, power, frequency, and electric energy of the charging cabinet device and the current of each charging circuit.

[0018] The collection of total / branch electrical parameters uses high-precision integrated power chips, which communicate with the microcontroller via SPI to achieve real-time, efficient and stable updating of important electrical parameter data.

[0019] Preferably, the A / D conversion acquisition module is used to collect the leakage current of the total circuit and the temperature analog quantity of each charging circuit.

[0020] The analog signal collected by the A / D conversion acquisition module is connected to the A / D interface of the single-chip microcomputer main control module, and the single-chip microcomputer main control module completes the signal reception and calculation, thereby obtaining high-precision leakage current and temperature data.

[0021] Preferably, the 4G wireless communication module is used for the GPRS wireless communication function of the charging cabinet device, and the 4G wireless communication module and the single-chip main control module exchange data via a serial port connection.

[0022] Preferably, the GPS positioning module is used for the precise positioning of the coordinates of the charging cabinet device. The GPS positioning module supports BDS / GPS / GLONASS / GALILEO / QZSS / SBAS multi-system joint positioning and single-system independent positioning. The GPS positioning module and the single-chip microcomputer main control module exchange data through a serial port connection. During operation, the real-time collected data information is transmitted to the single-chip microcomputer main control module at an inherent frequency for the single-chip microcomputer main control module to parse the coordinate data.

[0023] The BLE Bluetooth communication module is another wireless control function provided by the charging cabinet in addition to the GPRS remote charging application control method. When the GPRS wireless communication module in the charging cabinet device is abnormal, or the GPRS signal in the environment is extremely weak, causing the charging user to be unable to perform the normal WeChat scan code charging application, at this time, the administrator user with usage permission can turn on the Bluetooth function of the mobile phone, open WeChat, scan the QR code on the charging cabinet, select the Bluetooth cabinet opening function, and take out the battery already placed in the charging cabinet compartment to avoid delaying the charging user's use needs.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. An arc-extinguishing electrical fire protection module is set up. When a short circuit occurs in the charging circuit or a dangerous arc occurs, its unique arc-extinguishing short-circuit protection technology and fault arc detection technology can eliminate fire accidents from the source, making charging safer.

[0026] 2. The charging cabinet device provides a more comprehensive supervision platform. End users can add WeChat public accounts to query, recharge and receive prompt information on whether charging is completed, whether the power is off and the reason for the power outage; cooperative agents can supervise and settle the charging cabinet devices in the business area through the APP / WEB platform. The mobile and diversified supervision carriers make users more convenient and worry-free.

[0027] 3. The charging cabinet device has multiple independent charging circuits, each of which has an independent and configurable safe power allowable range, which can support the usage needs of different types of electric bicycle charger users.

[0028] 4. The charging cabinet device has multiple intelligent charging protection functions. First, each charging circuit terminal has a temperature sensor that can detect the ambient temperature of the PCB board where the circuit is located. When the charging current of the circuit is abnormal, the detected temperature rises and reaches the alarm value, the charging cabinet device will immediately push the alarm information to the cloud server. Under the condition that the alarm is not lifted, the data is uploaded multiple times to ensure that the alarm data is effectively uploaded to the cloud server to play a remote warning role; secondly, each charging warehouse has up to 3 temperature sensors at different monitoring points, which can accurately detect the ambient temperature in the charging warehouse. When an abnormality occurs during the charging process, causing the ambient temperature to rise and reach the alarm value, the charging cabinet device will immediately push the alarm information to the cloud server, and after a certain period of time, the fire extinguishing system will be activated to The charging compartment that has generated a fire alarm will perform fire extinguishing operations separately; secondly, when the charging circuit is overloaded during the charging process, the charging cabinet device can detect the current in a timely and effective manner. Since the overload current varies, the time to shut down the channel should also be different. According to the measured current, the time to shut down the channel can be accurately calculated, and the charging channel will be immediately shut down when the time arrives, and the channel shutdown data information will be immediately uploaded to the network cloud server, and the APP / WEB end will effectively receive the specific channel current overload information push; finally, the charging cabinet device is equipped with a total circuit leakage current detection function. When the total circuit leakage current is detected to be abnormal and reaches the alarm value, it can automatically disconnect all charging channels as needed, and immediately upload the leakage current alarm information to the cloud server, so as to protect the charging circuit from being affected to the greatest extent.

[0029] 5. The data exchange between the charging cabinet device and the network cloud server is carried out in the form of active reporting by the charging cabinet. Under normal operating conditions, the data is uploaded every few minutes without wasting traffic. Under alarm conditions, the data is uploaded immediately and quickly at a fixed time to ensure the timeliness and reliability of information push to the greatest extent.

[0030] 6. The GPS positioning module can provide accurate coordinate information, making it easier for users to find the nearest charging cabinet and provide map navigation. The BLE Bluetooth communication module, as a backup communication mechanism, will provide users with a control channel when the GPRS wireless communication module malfunctions, making it impossible for users to remotely control the charging bin according to normal procedures. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the internal structure of the charging cabinet device of the present invention;

[0033] Figure 3 This is a schematic diagram of the working process of the charging device of the present invention;

[0034] Figure 4A software workflow diagram for automatically powering off the charging device of the present invention;

[0035] Figure 5 A software workflow diagram for overload protection of the charging device of the present invention;

[0036] Figure 6 This is a schematic diagram of the charging user usage flow of the present invention;

[0037] Figure 7 A schematic diagram of the flow chart of the administrator user of the present invention;

[0038] Figure 8 This is the EMC power protection circuit diagram of the present invention;

[0039] Fig. 9 This is a circuit diagram of the single-chip microcomputer main control module of the present invention;

[0040] Fig.10 The circuit diagram of the photoelectric coupling and relay drive control module and the A / D conversion acquisition module of the present invention;

[0041] Fig.11 This is the circuit diagram of the total circuit electrical parameter acquisition module of the present invention;

[0042] Fig.12 This is a circuit diagram of a branch electrical parameter acquisition module of the present invention;

[0043] Fig.13 This is a circuit diagram of a 4G wireless communication module of the present invention;

[0044] Fig.14 This is the circuit diagram of the GPS positioning module of the present invention;

[0045] Fig.15 This is a circuit diagram of the BLE Bluetooth communication module of the present invention.

[0046] In the figure: 1. Charging cabinet device; 101. Arc-extinguishing electrical fire protection module; 102. Anti-lightning surge EMC power supply protection module; 103. Single-chip microcomputer main control module; 104. Optoelectronic coupling and relay drive control module; 105. Total / branch electrical parameter acquisition module; 106. A / D conversion acquisition module; 107. 4G wireless communication module; 108. GPS positioning module; 109. BLE Bluetooth communication module; 2. Cloud server; 3. APP / WEB terminal. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Example 1, please refer to Figure 1-15 The present invention provides a technical solution: an intelligent and safe charging device for electric bicycles based on a Dingding charging cabinet, comprising a charging cabinet device 1, a network cloud server 2 and an APP / WEB terminal 3. The charging cabinet device 1 is an application entity, which is mainly responsible for intelligent charging management and control. A plurality of charging compartments are arranged inside the charging cabinet device 1. The charging cabinet device 1 is connected to the network cloud server 2 via GPRS wireless communication. The network cloud server 2 is a transfer station for application data, which is responsible for forwarding, calculating and storing big data functions. The APP / WEB terminal 3 is an important application interface for customers, and uses the network cloud server 2 as the data background to remotely visualize the application of the charging cabinet, thereby realizing remote control, supervision and intelligent reminder services.

[0051] The charging cabinet device 1 is bidirectionally electrically connected to the network cloud server 2 , the network cloud server 2 is bidirectionally electrically connected to the APP / WEB terminal 3 , and the output terminal of the APP / WEB terminal 3 is connected to the input terminal of the charging cabinet device 1 .

[0052] The charging cabinet device 1 is internally provided with an arc-extinguishing electrical fire protection module 101, an anti-lightning surge EMC power supply protection module 102, a single-chip computer main control module 103, a photoelectric coupling and relay drive control module 104, a total / branch electrical parameter acquisition module 105, an A / D conversion acquisition module 106, a 4G wireless communication module 107, a GPS positioning module 108 and a BLE Bluetooth communication module 109;

[0053] The charging cabinet device uses 4G wireless communication, which has the advantages of wide area coverage, always online, and high-speed transmission. There is no need to worry about the amount of data transmitted in a frame, which is very suitable for application.

[0054] The output end of the A / D conversion acquisition module 106 is connected to the input end of the single-chip computer main control module 103, and the single-chip computer main control module 103 is bidirectionally electrically connected to the GPPS wireless communication module, the GPS positioning module 108 and the BLE Bluetooth communication module 109 through the TTL communication module; the output end of the anti-lightning surge EMC power supply protection module 102 is connected to the input end of the single-chip computer main control module 103; the output end of the single-chip computer main control module 103 is connected to the input end of the photoelectric coupling and relay drive control module 104 through the I / O control module; the single-chip computer main control module 103 is bidirectionally electrically connected to the arc-extinguishing electrical fire protection module 101 through the RS485 communication module, and the single-chip computer main control module 103 is bidirectionally electrically connected to the total / branch electrical parameter acquisition module 105 through the SPI communication module.

[0055] Furthermore, the arc-extinguishing electrical fire protection module 101 is used to realize the arc-extinguishing power-off function, accurately capture the electric sparks caused by line aging, water ingress in rainy days or illegal operation, make judgments, and then cut off the power supply in time to protect the line safety.

[0056] Furthermore, the anti-lightning surge EMC power supply protection module 102 provides a clean, stable and reliable working power supply for the charging cabinet device 1.

[0057] Furthermore, the single-chip microcomputer main control module 103 is responsible for the collection and management of all important data information of the charging cabinet device 1. It establishes a connection with the arc-extinguishing electrical fire protection module 101, the 4G wireless communication module 107, the GPS positioning module 108 and the BLE Bluetooth communication module 109 in a serial communication manner, and performs data interaction in a timely and efficient manner to ensure the real-time nature of various data information.

[0058] Further, the photoelectric coupling and relay driving control module 104 includes a charging compartment control module, a charging control module and an automatic fire extinguishing control module;

[0059] The charging compartment control module is used for opening control of each compartment door of the charging cabinet; the charging control module is for on / off control of the AC power output in each compartment of the charging cabinet; the automatic fire extinguishing control module is for on / off control of the fire extinguisher pipe nozzle in each compartment of the charging cabinet. The optocoupler device has good electrical insulation and anti-interference capabilities. It is connected to the relay, and the control signal is output by the single-chip main control module 103. Through the optocoupler device, it drives the on / off state of the relay, thereby realizing the application of charging compartment control, charging control, and automatic fire extinguishing control.

[0060] Furthermore, the total / branch electrical parameter acquisition module 105 is used to acquire the total voltage, current, power, frequency, and electric energy of the charging cabinet device 1 and to acquire the current of each charging circuit.

[0061] Furthermore, the A / D conversion acquisition module 106 is used to collect the leakage current of the main circuit and the temperature analog quantity of each charging circuit.

[0062] Furthermore, the 4G wireless communication module 107 is used for the GPRS wireless communication function of the charging cabinet device 1, and the 4G wireless communication module 107 and the single-chip main control module 103 exchange data via a serial port connection.

[0063] Furthermore, the GPS positioning module 108 is used for the precise positioning of the coordinates of the charging cabinet device 1. The GPS positioning module 108 supports BDS / GPS / GLONASS / GALILEO / QZSS / SBAS multi-system joint positioning and single-system independent positioning. The GPS positioning module 108 and the single-chip main control module 103 exchange data through a serial port connection. During operation, the real-time collected data information is transmitted to the single-chip main control module 103 at an inherent frequency for the single-chip main control module 103 to parse the coordinate data.

[0064] Example 2, please refer to Figure 6-7

[0065] The user's usage steps of the charging cabinet device 1 are as follows:

[0066] For charging users:

[0067] S1. After the charging user follows the Dingding Charging Cabinet official account through the WeChat APP on his mobile phone, he can create a personal account and complete the recharge. Then, he can use the official account to find idle charging cabinets nearby;

[0068] S2. Scan the QR code on the idle charging cabinet through the WeChat APP on the user's mobile phone, open the battery compartment, put the battery to be charged into the battery compartment, close the compartment door, and observe the charging status through the WeChat APP on the mobile phone;

[0069] When charging is completed or the poor contact of the plug reaches a certain degree, the charging is terminated, and the corresponding fee is deducted according to the actual power-off status. At the same time, the specific charging information is prompted on the mobile phone charging interface, such as whether the charging is completed, whether the power is abnormally cut off, etc.

[0070] For admin users:

[0071] S1. The administrator user must first register user information on the APP / WEB terminal 3, create a personal account, and obtain the installation location information and device ID number of the charging cabinet device;

[0072] S2. The administrator user downloads the APP application program unique to the charging cabinet device 1 through the mobile phone, logs in to the account, searches for the charging cabinet device used according to the device installation information and ID number, enters the device information monitoring interface, and observes the charging information.

[0073] The observable information specifically refers to: viewing basic information such as device ID number, installation date, device information, real-time data such as total circuit voltage, current, temperature, electric energy, real-time data of current and temperature of each charging circuit, device wireless communication status and alarm status information, as well as viewing historical data curves of important parameters such as voltage, current, electric energy, temperature, etc.; the device can be remotely operated such as self-checking, resetting, and silencing, and real-time push reminders of device abnormalities, alarms, and fault information can be obtained. The push message interface is a chat-style push interface, which is very intuitive and very helpful in discovering problems in a timely manner and eliminating charging safety hazards. At the same time, the administrator user can use the account to log in to the charging cabinet device's unique WEB web page interface to view historical data. The huge database can accommodate all data from the charging cabinet device used to the installation and operation. Example 3, please refer to Figure 3-5

[0074] The working process of the charging cabinet device 1 is as follows:

[0075] Step 1: The charging cabinet device 1 is powered on, and each unit module inside starts to run. The single-chip main control module 103 starts to continuously and regularly receive and sample the total circuit voltage, current, leakage current, power, frequency, and electric energy data, and samples the temperature value, status information, and charging circuit current data in each charging compartment. The total circuit electric energy is then stored in a timed manner, and the usage status of each charging compartment; the idle / occupied and charging status are clearly displayed in real time by the indicator light.

[0076] Step 2: The single-chip microcomputer main control module 103 respectively performs continuous and uninterrupted data interaction with the arc-extinguishing electrical fire protection module 101, the 4G wireless communication module 107, the GPS positioning module 108 and the BLE Bluetooth communication module 109 through serial port communication to ensure that the important data information monitored by each of the above communication modules is transmitted to the single-chip microcomputer main control module 103 in real time and efficiently for unified management and control.

[0077] Step 3: Detect whether the GPRS wireless communication module has established a connection with the network cloud server 2, and the single-chip main control module 103 controls the corresponding indicator light to display the network connection status and the data transmission status. After the GPRS connection is normal, the single-chip main control module 103 controls the detection of the GPRS signal strength, and packages the signal data together with the monitoring sampling data and status information, and uploads the data packet to the network cloud server 2 at an adjustable frequency cycle, which is similar to the heartbeat packet function. The GPRS wireless communication module is provided with a separate heartbeat packet data. The network cloud server 2 can effectively determine whether the charging cabinet device 1 is offline according to the received data type and status, and then make corresponding reconnection processing.

[0078] Step 4: Receive the charging channel open / close command sent from the APP / WEB terminal 3 in real time. The single-chip main control module 103 manages the received data, determines the specific charging compartment number and the control requirements: charging, storage or removal, and then makes corresponding processing. The charging cabinet device 1 is combined with the APP / WEB terminal 3 to realize the clarity of charging application management.

[0079] Step 5: The charging cabinet device 1 has a charging safety soft protection mechanism, that is, after the charging channel is turned on, the channel will detect the charging current, and the charging cabinet device 1 will determine the charging status according to the detected current size. Each channel has an independent power limit condition, which is a configurable option within a safe range. Due to different charger types, the normal charging current is also different. The device can adjust the current alarm value according to the actual application situation.

[0080] a1) When the charging current is overloaded, the software activates the inverse time protection mechanism. When the short circuit occurs at different locations on the same line, due to the different short-circuit currents, the protection has different action time limits, and the action time is inversely proportional to the size of the short-circuit current. The single-chip main control module 103 accurately calculates the overload action time T in units of S according to a specific formula S, and before the action time T is reached, T is always updated to the shortest time calculated by the maximum current. When the overload maintenance time reaches T, the channel is immediately shut down; the application formula S is specifically: T = [1-(Ic-Io) / Io*kp]*Tmax, Ic is the current detection current value, Io is the current overload threshold, kp is a coefficient, and its value is fixed at 1.5, and Tmax is the maximum action duration in units of S;

[0081] a2) When the charging is detected to be completed, the single-chip microcomputer main control module 103 starts timing to prepare for power off, and when the timing time is reached, the channel is immediately turned off;

[0082] a3) During normal charging, if the charger is plugged in or out, the single-chip main control module 103 starts timing. When the continuous unplugging time reaches the set time, the channel is immediately shut down;

[0083] a4) After the channel is opened, if the charging device is not connected for a long time, the channel will be immediately closed when the situation lasts for a set time, and no charges will be made. Under the above four conditions, after the power is cut off, the data packet is immediately uploaded to the network cloud server 2, so that the APP / WEB end can timely push the channel power off information service.

[0084] Step 6: The arc-extinguishing electrical fire protection module 101 is connected in series to the main power circuit of the charging cabinet device 1. It has its own unique arc-extinguishing short-circuit detection and cutting technology and fault arc detection technology. When a charging short circuit or other faults cause dangerous electric sparks in the charging circuit, the arc-extinguishing electrical fire protection module 1 can cut off the power supply of the charging circuit in time, and only disconnect the dangerous fault point, but the module itself and the main control part of the charging cabinet device 1 still maintain normal operation, and eliminate the occurrence of fire hazards at the root in the most sensitive way, ensure charging safety, and immediately upload the alarm information to the network cloud server 3, so that the APP / WEB end can timely push the charging short-circuit alarm information, eliminate the hidden dangers in time, and ensure the normal operation of charging.

[0085] Step 7: The charging cabinet device 1 detects the main circuit voltage, current, leakage current, power, frequency, electric energy, temperature information in real time, and the charging circuit detects current and temperature data and status information. When it detects that the main circuit voltage is undervoltage or overvoltage alarm, the main circuit current is overloaded, the main circuit leakage current alarm is generated, the main circuit temperature alarm is generated, and the charging circuit temperature has a connection failure or alarm, the charging cabinet device 1 automatically ends the original timing cycle active data upload mode, starts to upload data packets immediately, and starts a certain maintenance period of timed fast upload function according to different alarm types. When the fast upload cycle arrives or the alarm is released within the cycle, the original timing cycle active data upload mode is restored.

[0086] Step 8: The charging cabinet device 1 receives control command information from the mobile phone APP and the network WEB in real time. The control commands include basic operation commands such as charging compartment door opening, storage, charging, and removal, reset, self-test, and remote reading and writing of important parameters. Each command has a response mechanism and a communication failure retransmission mechanism to ensure the reliability of GPRS wireless communication transmission to the greatest extent.

[0087] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent and safe charging device for electric bicycles based on a DingDing charging cabinet, characterized in that: The invention comprises a charging cabinet device (1), a network cloud server (2) and an APP / WEB terminal (3), wherein the charging cabinet device (1) is an application entity and is mainly responsible for intelligent charging management and control. A plurality of charging compartments are arranged inside the charging cabinet device (1), and the charging cabinet device (1) is connected to the network cloud server (2) via GPRS wireless communication. The network cloud server (2) is a transfer station for application data and is responsible for forwarding, calculating and storing big data functions. The APP / WEB terminal (3) is an important application interface facing customers and uses the network cloud server (2) as a data background to remotely visualize the application of the charging cabinet, thereby realizing remote control, supervision and intelligent reminder services. The charging cabinet device (1) is bidirectionally electrically connected to the network cloud server (2), the network cloud server (2) is bidirectionally electrically connected to the APP / WEB terminal (3), and the output terminal of the APP / WEB terminal (3) is connected to the input terminal of the charging cabinet device (1); The charging cabinet device (1) is internally provided with an arc-extinguishing electrical fire protection module (101), an anti-lightning surge EMC power supply protection module (102), a single-chip computer main control module (103), a photoelectric coupling and relay drive control module (104), a total / branch electrical parameter acquisition module (105), an A / D conversion acquisition module (106), a 4G wireless communication module (107), a GPS positioning module (108) and a BLE Bluetooth communication module (109); The output end of the A / D conversion acquisition module (106) is connected to the input end of the single-chip computer main control module (103); the single-chip computer main control module (103) is bidirectionally electrically connected to the GPPS wireless communication module, the GPS positioning module (108) and the BLE Bluetooth communication module (109) through the TTL communication module; the output end of the lightning surge EMC power supply protection module (102) is connected to the input end of the single-chip computer main control module (103); the output end of the single-chip computer main control module (103) is connected to the input end of the photoelectric coupling and relay drive control module (104) through the I / O control module; the single-chip computer main control module (103) is bidirectionally electrically connected to the arc-extinguishing electrical fire protection module (101) through the RS485 communication module; the single-chip computer main control module (103) is bidirectionally electrically connected to the total / branch electrical parameter acquisition module (105) through the SPI communication module; The arc-extinguishing electrical fire protection module (101) is used to realize the arc-extinguishing power-off function, accurately capture the electric sparks caused by line aging, water ingress in rainy days or illegal operation, make a judgment, and then cut off the power supply in time to protect the line safety; The lightning surge and EMC power protection module (102) provides a clean, stable and reliable working power supply for the charging cabinet device (1); The single-chip computer main control module (103) is responsible for collecting and managing all important data information of the charging cabinet device (1), and is connected with the arc-extinguishing electrical fire protection module (101), the 4G wireless communication module (107), the GPS positioning module (108) and the BLE Bluetooth communication module (109) in a serial communication manner; The photoelectric coupling and relay driving control module (104) comprises a charging compartment control module, a charging control module and an automatic fire extinguishing control module; The charging compartment control module is used to control the opening of each compartment door of the charging cabinet; the charging control module is used to control the on and off of the AC power output in each compartment of the charging cabinet; and the automatic fire extinguishing control module is used to control the on and off of the fire extinguisher pipe nozzles in each compartment of the charging cabinet.

2. According to claim 1, an electric bicycle intelligent safety charging device based on a Dingding charging cabinet is characterized in that: The main / branch electric parameter acquisition module (105) is used to acquire the main voltage, current, power, frequency, and electric energy of the charging cabinet device (1) and to acquire the current of each charging circuit.

3. According to claim 1, an electric bicycle intelligent safety charging device based on a Dingding charging cabinet is characterized in that: The A / D conversion acquisition module (106) is used to collect the leakage current of the main circuit and the temperature analog quantity of each charging circuit.

4. According to claim 1, an electric bicycle intelligent safety charging device based on a Dingding charging cabinet is characterized in that: The 4G wireless communication module (107) is used for the GPRS wireless communication function of the charging cabinet device (1), and the 4G wireless communication module (107) and the single-chip computer main control module (103) perform data exchange via a serial port connection.

5. According to claim 1, an electric bicycle intelligent safety charging device based on a Dingding charging cabinet is characterized in that: The GPS positioning module (108) is used for accurate positioning of the coordinates of the charging cabinet device (1). The GPS positioning module (108) supports BDS / GPS / GLONASS / GALILEO / QZSS / SBAS multi-system joint positioning and single-system independent positioning. The GPS positioning module (108) and the single-chip microcomputer main control module (103) exchange data via a serial port connection. During operation, the real-time collected data information is transmitted to the single-chip microcomputer main control module (103) at an inherent frequency, so that the single-chip microcomputer main control module (103) can parse the coordinate data.

Images