Wireless intelligent charging management system

Abstract

The invention relates to the technical field of power equipment, in particular to a wireless intelligent charging management system, which comprises a wireless handheld terminal and a plurality of charging boxes, and is characterized in that the wireless handheld terminal comprises a CPU module, a touch display module and a first wireless communication module; the charging box comprises a micro-control unit, an overvoltage protection module, a charging voltage control module, a charging current control module, a first wireless communication module and a battery communication serial port. According to the wireless intelligent charging management system, the first wireless communication module and the second wireless communication module are arranged, so that the multiple charging boxes in the wireless intelligent charging management system can be in wireless communication with the wireless handheld terminal, and the number of the charging boxes managed by the wireless handheld terminal can be increased or reduced according to actual needs; the expandability of the wireless intelligent charging management system is improved, a user can check the working states of all the charging boxes and the to-be-charged battery at any position by carrying the wireless handheld terminal, and the use convenience of the wireless intelligent charging management system is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power equipment, and in particular to a wireless intelligent charging management system. Background Art

[0002] With the development of new energy technologies, batteries are increasingly used in various fields, from mobile devices to electric vehicles, from energy storage systems to industrial equipment, and the demand for batteries continues to grow. In this context, the demand for centralized charging of batch batteries has become increasingly prominent. Centralized charging of batch batteries not only improves charging efficiency, but also facilitates management and maintenance. For example, centralized charging of automotive battery packs during the production of new energy vehicles, regular centralized charging of backup power supplies in data centers, and centralized charging of drone batteries in large-scale drone delivery services.

[0003] However, there may be some risks in the centralized charging process. Batteries charged in batches may differ in performance, capacity, charging voltage, etc. If the charging strategy is inappropriate, some batteries may be overcharged or undercharged, affecting the battery life and performance. For example, in a group of batteries, some batteries are already fully charged, but because the overall charging has not stopped, these batteries are overcharged, causing battery damage, battery overheating, and even fire and explosion. Therefore, a system is needed that can monitor and manage the status of batteries charged in batches, prompting managers to arrive at abnormal batteries and handle batteries with abnormal charging. Summary of the invention

[0004] In order to solve the problems in the related art, an embodiment of the present disclosure provides a wireless intelligent charging management system.

[0005] In a first aspect, the present disclosure provides a wireless intelligent charging management system, including a wireless handheld terminal and a plurality of charging boxes, wherein:

[0006] The wireless handheld terminal includes a CPU module, a touch display module, and a first wireless communication module;

[0007] The touch display module is connected to the CPU module, and the touch display module is used to display the charging status of the charging box;

[0008] The first wireless communication module is connected to the CPU module, and the first wireless communication module is used to communicate with the charging box, receive the working status of the charging box and send control instructions to the charging box;

[0009] The charging box includes a micro control unit, an overvoltage protection module, a charging voltage control module, a charging current control module, a first wireless communication module, and a battery communication serial port;

[0010] The overvoltage protection module is connected to the external power supply and the charging voltage control module respectively, and the overvoltage protection module is used to cut off the connection with the external power supply when the voltage of the external power supply is abnormal;

[0011] The battery communication serial port is connected to the battery to be charged and the micro control unit respectively, and is used to feed back the status information of the battery to be charged to the micro control unit;

[0012] The charging voltage control module is connected to the micro control unit and the charging current control module respectively, and the charging voltage control module is used to set the charging voltage to the rated charging voltage;

[0013] The charging current control module is connected to the battery to be charged and the charging voltage control module respectively;

[0014] The second wireless communication module is connected to the micro control unit, and the second wireless communication module is used for wireless communication with the wireless handheld terminal.

[0015] According to an embodiment of the present disclosure, the charging voltage control module includes a switch board, a step-down power supply, a first diode and a second diode. The switch board and the step-down power supply are respectively connected in parallel with the overvoltage protection module, the first diode is connected to the switch board for control, and the second diode is connected to the step-down power supply.

[0016] According to an embodiment of the present disclosure, the overvoltage protection module includes an input terminal, an output terminal, a ground terminal, a first voltage-stabilizing diode, a second voltage-stabilizing diode, a third voltage-stabilizing diode, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor, a fourth voltage-dividing resistor, a first MOS switch, and a second MOS switch, wherein:

[0017] The anode of the first voltage-dividing diode is respectively connected to the first end of the first voltage-dividing resistor, the second end of the second voltage-dividing resistor, and the gate of the first MOS switch; the cathode of the first voltage-dividing diode is respectively connected to the input end, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor, and the source of the second MOS switch;

[0018] The anode of the second voltage-dividing diode is respectively connected to the drain of the first MOS switch, the first end of the third voltage-dividing resistor, the gate of the second MOS switch, and the second end of the fourth voltage-dividing resistor; the cathode of the second voltage-dividing diode is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the second end of the third voltage-dividing resistor, and the source of the second MOS switch;

[0019] The anode of the third voltage-stabilizing diode is connected to the ground terminal and the first end of the fourth voltage-dividing resistor respectively; the cathode of the third voltage-stabilizing diode is connected to the first end of the second voltage-dividing resistor;

[0020] The first end of the first voltage-dividing resistor is respectively connected to the anode of the first voltage-dividing diode, the second end of the second voltage-dividing resistor and the gate of the first MOS switch; the second end of the first voltage-dividing resistor is respectively connected to the input end, the source of the first MOS switch, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor and the source of the second MOS switch;

[0021] The first end of the second voltage-dividing resistor is connected to the cathode of the third voltage-dividing diode, and the second end of the second voltage-dividing resistor is respectively connected to the anode of the first voltage-dividing diode, the first end of the first voltage-dividing resistor and the gate of the first MOS switch;

[0022] The first end of the third voltage-dividing resistor is respectively connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the gate of the second MOS switch, and the second end of the fourth voltage-dividing resistor; the second end of the third voltage-dividing resistor is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, and the source of the second MOS switch;

[0023] The first end of the fourth voltage-dividing resistor is respectively connected to the anode of the third voltage-dividing diode and the grounding end; the second end of the fourth voltage-dividing resistor is respectively connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, and the source of the second MOS switch;

[0024] The gate of the first MOS switch is respectively connected to the anode of the first voltage-dividing diode, the first end of the first voltage-dividing resistor, and the second end of the second voltage-dividing resistor; the source of the first MOS switch is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor, and the source of the second MOS switch; the drain of the first MOS switch is connected to the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, the gate of the second MOS, and the second end of the fourth voltage-dividing resistor;

[0025] The gate of the second MOS switch is connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, and the second end of the fourth voltage-dividing resistor; the source of the second MOS switch is connected to the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, and the second end of the third voltage-dividing resistor; and the drain of the second MOS switch is connected to the output end.

[0026] According to an embodiment of the present disclosure, the first wireless communication module and the second wireless communication module include: a wireless transceiver chip, a micro control unit, a transceiver switching circuit, an impedance matching circuit and a communication antenna.

[0027] in:

[0028] The wireless transceiver chip is connected to the micro control unit and the transceiver switching circuit;

[0029] The first end of the impedance matching circuit is connected to the transceiver switching circuit, and the second end of the impedance matching circuit is connected to the communication antenna.

[0030] According to an embodiment of the present disclosure, the impedance matching circuit includes a π-type impedance matching circuit, and the π-type impedance matching circuit includes a first capacitor, a second capacitor, a third capacitor and a matching inductor. The first end of the first capacitor and the first end of the second capacitor are grounded respectively, the first end of the matching inductor is connected to the second end of the first capacitor and the second end of the third capacitor respectively, and the first end of the third capacitor is connected to the transceiver switching circuit; the second end of the matching inductor is connected to the second end of the second capacitor and the communication antenna respectively.

[0031] According to an embodiment of the present disclosure, the wireless handheld terminal further includes a battery module, an alarm module, a real-time clock module, a USB module and a storage module;

[0032] The battery module is connected to the CPU module, and the battery module is used to supply power to the wireless handheld terminal;

[0033] The alarm module is connected to the CPU module, and is used to respond to the alarm instruction issued by the CPU module and send alarm information to the user;

[0034] The real-time clock module is connected to the CPU module, and the real-time clock module is used to obtain real-time time;

[0035] The USB module is connected to the CPU module and the charging management module respectively, and is used to transmit signals to the CPU module and the storage module and to charge the battery module;

[0036] The storage module is connected to the CPU module, and the storage module is used to store the system firmware information of the wireless handheld terminal and the firmware information of the charging box;

[0037] The charging management module is connected to the battery module and the USB module.

[0038] According to an embodiment of the present disclosure, the charging box also includes a voltage acquisition module and a current acquisition module, and the voltage acquisition module and the current acquisition module are respectively connected to the micro control unit, the voltage acquisition module is used to send the real-time charging voltage of the battery to be charged to the micro control unit, and the current acquisition module is used to send the real-time charging current of the battery to be charged to the micro control unit.

[0039] According to an embodiment of the present disclosure, the charging box also includes an indicator light module, which is arranged on the outside of the charging box. The indicator light module includes a communication status indicator light, a working status indicator light and an alarm status indicator light. The communication status indicator light is used to indicate the communication status between the charging box and the wireless handheld terminal, and the working status indicator light is used to indicate the charging status of the charging box; the alarm status indicator light is used to indicate the abnormal status of the charging box and the battery to be charged.

[0040] According to an embodiment of the present disclosure, the wireless transceiver chip adopts the 868MHZ communication frequency band.

[0041] According to the technical solution provided by the embodiment of the present disclosure, the present invention enables wireless communication between multiple charging boxes and wireless handheld terminals in the wireless intelligent charging management system by setting a first wireless communication module and a second wireless communication module. The number of charging boxes managed by the wireless handheld terminal can be increased or reduced according to actual needs, thereby improving the scalability of the wireless intelligent charging management system. Users can carry wireless handheld terminals to view the working status of all charging boxes and batteries to be charged at any location, thereby improving the convenience of using the wireless intelligent charging management system. In addition, the charging box of the wireless intelligent charging management system disclosed in the present disclosure also includes a charging voltage control module and an overvoltage protection module, which can adjust the actual charging voltage according to the rated charging voltage of the battery, and can also prevent the battery to be charged from being damaged due to voltage fluctuations.

[0042] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Other features, objectives and advantages of the present disclosure will become more apparent through the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the accompanying drawings:

[0044] Figure 1A diagram showing an application scenario of a wireless intelligent charging management system according to an embodiment of the present disclosure is shown.

[0045] Figure 2 A schematic diagram of the structure of a wireless handheld terminal in a wireless intelligent charging management system according to an embodiment of the present disclosure is shown.

[0046] Figure 3 A schematic diagram of the structure of a wireless handheld terminal in a wireless intelligent charging management system according to an embodiment of the present disclosure is shown.

[0047] Figure 4 A schematic diagram of the structure of a charging box in a wireless intelligent charging management system according to an embodiment of the present disclosure is shown.

[0048] Figure 5 A circuit diagram of an overvoltage protection module in a wireless intelligent charging management system according to an embodiment of the present disclosure is shown.

[0049] Figure 6 A schematic structural diagram of a first wireless communication module and a second wireless communication module in a wireless intelligent charging management system according to an embodiment of the present disclosure is shown.

[0050] Figure 7 A schematic diagram showing the appearance of a charging box in a wireless intelligent charging management system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0051] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. In addition, for the sake of clarity, parts not related to the description of the exemplary embodiments are omitted in the accompanying drawings.

[0052] In the present disclosure, it should be understood that terms such as "include" or "have" are intended to indicate the presence of features, numbers, steps, behaviors, components, parts, or a combination thereof disclosed in the present specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, behaviors, components, parts, or a combination thereof exist or are added.

[0053] It should also be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other. The present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] Figure 1 FIG. 1 shows an application scenario diagram of a wireless intelligent charging management system according to an embodiment of the present disclosure. Figure 1As shown, the wireless intelligent charging management system can manage multiple charging boxes through a wireless handheld terminal, and each charging box can be connected to a battery to be charged. The system can be used in factories to charge a large number of batteries in batches and monitor the charging status of each battery. Each charging box only needs to be connected to the power supply by wire, and the charging box and the wireless handheld terminal communicate wirelessly. Compared with the wired connection method and the fixed operating table, the user can carry the wireless control terminal to monitor the status of all charging boxes for batch charging at any location in the factory. The status of multiple charging boxes can be monitored without wiring, which improves the convenience of user use.

[0055] Figure 2 FIG. 1 is a schematic diagram showing the structure of a wireless handheld terminal in a wireless intelligent charging management system according to an embodiment of the present disclosure. Figure 2 As shown, the wireless intelligent charging management system includes a wireless handheld terminal and a plurality of charging boxes, wherein:

[0056] The wireless handheld terminal includes a CPU module, a touch display module, and a first wireless communication module.

[0057] The touch display module is connected to the CPU module, and the touch display module is used to display the charging status of the charging box. Figure 3 FIG. 1 is a schematic diagram showing the structure of a wireless handheld terminal in a wireless intelligent charging management system according to an embodiment of the present disclosure. Figure 3 As shown, the touch display module can display the battery number, online status, remaining power, charging status and temperature information of all charging boxes connected to the wireless handheld terminal, and can start and stop charging of one or more charging boxes by clicking the corresponding position of the touch display module. When the online status is abnormal or the charging status is abnormal, the touch display module can highlight the corresponding battery box and display a warning message to remind the user to check the abnormal charging box and abnormal battery to be charged.

[0058] The first wireless communication module is connected to the CPU module, and is used to communicate with the charging box, receive the working status of the charging box and send control instructions to the charging box. The first wireless communication module enables the wireless handheld terminal to communicate wirelessly with at least 255 charging boxes, with a communication distance of more than 50 meters, without the need for complex wiring operations between the terminal and the charging box, and can expand or reduce the number of charging boxes as needed, thereby improving the convenience of using the charging management system.

[0059] Figure 4 FIG. 1 is a schematic diagram showing the structure of a charging box in a wireless intelligent charging management system according to an embodiment of the present disclosure. Figure 4As shown, the charging box includes a micro control unit, an overvoltage protection module, a charging voltage control module, a charging current control module, a second wireless communication module, and a battery communication serial port.

[0060] The overvoltage protection module is connected to the external power supply and the charging voltage control module respectively, and the overvoltage protection module is used to cut off the connection with the external power supply when the external power supply voltage is abnormal. In areas with unstable voltage or in thunderstorms, the power supply voltage connected to the charging box may fluctuate violently, and such violent voltage fluctuations may have a serious impact on the rechargeable battery, causing battery damage or even fire and explosion. Therefore, an overvoltage protection module is added between the power supply and the battery to be charged. When the power supply voltage is abnormal, the power supply is automatically switched or disconnected to avoid damage to the battery.

[0061] Figure 5 FIG. 1 shows a circuit diagram of an overvoltage protection module in a wireless intelligent charging management system according to an embodiment of the present disclosure. Figure 5 As shown, the overvoltage protection module includes an input terminal, an output terminal, a ground terminal GND, a first voltage zener diode D1, a second voltage zener diode D2, a third voltage zener diode D3, a first voltage divider resistor R1, a second voltage divider resistor R2, a third voltage divider resistor R3, a fourth voltage divider resistor R4, a first MOS switch Q1, and a second MOS switch Q2, wherein:

[0062] The anode A of the first voltage-dividing diode is respectively connected to the first end of the first voltage-dividing resistor, the second end of the second voltage-dividing resistor, and the gate of the first MOS switch; the cathode C of the first voltage-dividing diode is respectively connected to the input end, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor, and the source of the second MOS switch.

[0063] The anode A of the second voltage-dividing diode is respectively connected to the drain of the first MOS switch, the first end of the third voltage-dividing resistor, the gate of the second MOS switch, and the second end of the fourth voltage-dividing resistor; the cathode C of the second voltage-dividing diode is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the second end of the third voltage-dividing resistor, and the source of the second MOS switch.

[0064] The anode A of the third voltage-regulating diode is connected to the ground terminal and the first end of the fourth voltage-dividing resistor respectively; the cathode C of the third voltage-regulating diode is connected to the first end of the second voltage-dividing resistor.

[0065] The voltage regulator diode is a special surface contact semiconductor silicon diode. When the voltage regulator diode is in a breakdown state, the current varies in a wide range, while the voltage across it remains basically unchanged, and it can automatically adjust the current to keep the voltage stable. The first voltage regulator diode, the second voltage regulator diode, and the third voltage regulator diode are used to stabilize the circuit voltage and protect the first MOS switch and the second MOS switch from being damaged by voltage fluctuations. Furthermore, the voltage regulator value of the first voltage regulator diode and the second voltage regulator diode is 18V, and the voltage regulator value of the third voltage regulator diode is 47V.

[0066] The first end of the first voltage-dividing resistor is respectively connected to the anode of the first voltage-dividing diode, the second end of the second voltage-dividing resistor and the gate of the first MOS switch; the second end of the first voltage-dividing resistor is respectively connected to the input end, the source of the first MOS switch, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor and the source of the second MOS switch.

[0067] The first end of the second voltage-dividing resistor is connected to the cathode of the third voltage-dividing diode, and the second end of the second voltage-dividing resistor is respectively connected to the anode of the first voltage-dividing diode, the first end of the first voltage-dividing resistor and the gate of the first MOS switch.

[0068] The first end of the third voltage-dividing resistor is respectively connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the gate of the second MOS switch, and the second end of the fourth voltage-dividing resistor; the second end of the third voltage-dividing resistor is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, and the source of the second MOS switch.

[0069] The first end of the fourth voltage-dividing resistor is respectively connected to the anode of the third voltage-dividing diode and the ground end; the second end of the fourth voltage-dividing resistor is respectively connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, and the source of the second MOS switch.

[0070] According to the embodiment of the present disclosure, the first voltage-dividing resistor, the second voltage-dividing resistor, the third voltage-dividing resistor and the fourth voltage-dividing resistor are large-resistance resistors, and their resistance range is 10KΩ~91KΩ. Their main function is to share the excessive voltage and protect the voltage-regulating diode and the MOS switch, so as to prevent the voltage-regulating diode and the MOS switch from being broken down due to the excessive voltage, causing the overvoltage protection circuit to fail or even damaging the battery to be charged.

[0071] The gate of the first MOS switch is respectively connected to the anode of the first voltage-dividing diode, the first end of the first voltage-dividing resistor, and the second end of the second voltage-dividing resistor; the source of the first MOS switch is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor, and the source of the second MOS switch; the drain of the first MOS switch is connected to the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, the gate of the second MOS, and the second end of the fourth voltage-dividing resistor.

[0072] The gate of the second MOS switch is connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, and the second end of the fourth voltage-dividing resistor; the source of the second MOS switch is connected to the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, and the second end of the third voltage-dividing resistor; and the drain of the second MOS switch is connected to the output end.

[0073] According to the embodiments of the present disclosure, the MOS switch can change the on-off state of the MOS switch according to the relationship between the voltage difference between the gate and the source, and between the drain and the source, thereby achieving the technical effect of preventing the voltage at the output end of the overvoltage protection module from being too high.

[0074] According to the embodiments of the present disclosure, the overvoltage protection module can achieve that when the input voltage of the input end is greater than the preset protection voltage, the output voltage of the output end is 0V, and when the input voltage of the input end is less than or equal to the preset protection voltage, the output voltage of the output end is equal to the input voltage, so that the charging box can cut off the power supply in time when the connected power supply voltage fluctuates to prevent battery damage. Its working principle is as follows: the preset protection voltage is 48.5V. When the input voltage is 46V, 46V does not reach the breakdown voltage of the third Zener diode, which is 47V. The third Zener diode is in a non-breakdown state. The gate and source of the first MOS switch are equal in voltage, and the first MOS switch is in an open circuit state. The gate voltage of the second MOS switch is 34.5V (the gate voltage of the second MOS switch is calculated as R4 / (R3+R4)*46V=34.5V), which is less than the source voltage of the second MOS switch, which is 46V. At this time, the second The MOS switch is in the on state, and the output voltage of the output end of the overvoltage protection module is 46V; when the input voltage is 50V, the third voltage zener diode is in the reverse breakdown state, that is, the voltage of the cathode C is 47V, which is less than the source voltage of the first MOS switch, 50V, and the first MOS switch is in the on state and its drain voltage is 50V, so the gate voltage of the second MOS switch is 50V, and the source voltage of the second MOS switch is 50V, so the second MOS switch is in the off state, and the output voltage of the output end of the overvoltage protection module is 0V.

[0075] like Figure 2 As shown, the battery communication serial port is connected to the battery to be charged and the micro control unit respectively, and is used to feed back the status information of the battery to be charged to the micro control unit. The battery communication serial port is connected to the main control chip of the battery to be charged through a charging line to obtain the model information, firmware information, current and voltage information, temperature information and abnormal information of the battery to be charged, and is used to monitor the charging status of the battery in real time. The battery communication serial port can also perform firmware upgrades for batteries in batches through the battery communication serial port.

[0076] like Figure 2 As shown, the charging voltage control module is connected to the micro control unit and the charging current control module respectively, and the charging voltage control module is used to set the charging voltage to the rated charging voltage. After the micro control unit obtains the model information of the battery to be charged through the battery communication serial port, it can determine the rated charging voltage of the battery according to the model information, and then the micro control unit sends the charging voltage information to the charging voltage control module to set the charging voltage of the charging box.

[0077] According to an embodiment of the present disclosure, the charging voltage control module includes a switch board, a step-down power supply, a first diode and a second diode. The switch board and the step-down power supply are respectively connected in parallel with the overvoltage protection module, the first diode is connected to the switch board, and the second diode is connected to the step-down power supply. For example, the access voltage of the switch board is 42V, and the step-down power supply is 42V to 24V. When the rated charging voltage of the battery to be charged is 42V, the microcontroller unit sends a closing instruction to the switch board, at which time the power supply is connected to the battery to be charged through the switch board and the first diode, and the charging voltage is 42V; when the rated charging voltage of the battery to be charged is 24V, the microcontroller unit sends a disconnection instruction to the switch board, at which time the power supply is connected to the battery to be charged through the step-down power supply and the second diode, and the charging voltage is 24V.

[0078] The charging current control module is connected to the battery to be charged and the charging voltage control module respectively. The charging current control module is used to control the charging current of the battery to be charged. When the micro control unit obtains the real-time charging current and the remaining power of the battery to be charged, it sends a current control instruction to the charging current control module according to the preset charging strategy to adjust the charging current of the battery to be charged.

[0079] The second wireless communication module is connected to the micro control unit, and the wireless communication module is used to communicate with the wireless handheld terminal. The second wireless communication module can communicate with the first wireless communication module in the wireless handheld terminal, receive pairing instructions, start charging instructions, stop charging instructions, firmware upgrade instructions, etc. sent by the first wireless communication terminal, and can send battery current and voltage information, battery real-time capacity information, battery model information, battery abnormality information, etc. to the first wireless communication terminal. Multiple second wireless communication modules can communicate with one first wireless communication module at the same time.

[0080] Figure 6 FIG. 1 is a schematic diagram showing the structure of a first wireless communication module and a second wireless communication module in a wireless intelligent charging management system according to an embodiment of the present disclosure. Figure 6As shown, the first wireless communication module and the second wireless communication module include: a wireless transceiver chip, a micro control unit, a transceiver switching circuit, an impedance matching circuit and a communication antenna, wherein: the wireless transceiver chip is connected to the micro control unit and the transceiver switching circuit; the first end of the impedance matching circuit is connected to the transceiver switching circuit, and the second end of the impedance matching circuit is connected to the communication antenna. The wireless transceiver chip is used to send data to the wireless handheld terminal and receive data from the wireless handheld terminal. The transceiver switching circuit is used to switch the transmission path and the receiving path. When the wireless transceiver chip needs to send data outward, the transceiver switching circuit is switched to the transmission path. When the wireless transceiver chip needs to receive data, the transceiver switching circuit is switched to the receiving path, which can realize mutual exclusion of sending and receiving, and realize the time-division multiplexing function of sending and receiving of a single antenna.

[0081] According to the embodiments of the present disclosure, Figure 6 As shown, the impedance matching circuit includes a π-type impedance matching circuit, and the π-type impedance matching circuit includes a first capacitor C1, a second capacitor C2, a third capacitor C3 and a matching inductor, the first end of the first capacitor and the first end of the second capacitor are grounded respectively, the first end of the matching inductor is connected to the second end of the first capacitor and the second end of the third capacitor respectively, and the first end of the third capacitor is connected to the transceiver switching circuit; the second end of the matching inductor is connected to the second end of the second capacitor and the communication antenna respectively. The impedance matching circuit is used to adjust the impedance of the communication antenna to match the impedance of the radio frequency circuit, reduce signal reflection, improve the transmission efficiency of the antenna and the transmission line, reduce signal distortion and noise, and improve the strength and integrity of the signal.

[0082] According to an embodiment of the present disclosure, the wireless handheld terminal further includes a battery module, an alarm module, a real-time clock module, a USB module, a charging management module and a storage module.

[0083] The battery module is connected to the CPU module, and is used to supply power to the wireless handheld terminal. The battery module is arranged inside the wireless handheld terminal, and can supply power to various modules of the wireless handheld terminal through the CPU module.

[0084] The alarm module is connected to the CPU module, and is used to respond to the alarm instruction issued by the CPU module and send an alarm message to the user. The alarm module includes an alarm speaker and an alarm flash. When the CPU module receives abnormal information sent by the charging box, the CPU sends an alarm instruction to the alarm module, causing the alarm speaker to sound an alarm and broadcast the abnormal charging box number. At the same time, the alarm flash lights up. Through the alarm method combined with sound and light, it is convenient for users to find the wireless handheld terminal in time and handle abnormal information.

[0085] like Figure 2As shown, the real-time clock module is connected to the CPU module, and the real-time clock module is used to obtain real-time time.

[0086] like Figure 2 As shown, the USB module is connected to the CPU module and the charging management module respectively, and is used to transmit signals to the CPU module and the storage module and to charge the battery module. The USB module is provided with a USB interface on the surface of the wireless handheld terminal, which is used to insert a USB data cable to charge the wireless handheld terminal. The USB data cable can also be connected to other terminals to transmit the charging box data stored in the storage module.

[0087] like Figure 2 As shown, the storage module is connected to the CPU module, and the storage module is used to store the system firmware information of the wireless handheld terminal and the firmware information of the charging box. The storage module can store the firmware information, pairing information and log information of the charging box that has been connected to the wireless handheld terminal. When the wireless handheld terminal is connected to the charging box again, it can be connected according to the pairing information without pairing again. Battery maintenance personnel can also retrieve the log information of abnormal batteries to facilitate battery maintenance management.

[0088] According to an embodiment of the present disclosure, the charging management module is connected to the battery module and the USB module, and the charging management module is used to control the current and voltage of the USB module charging the battery module, prevent the battery module from being overcharged, and protect the battery module.

[0089] According to an embodiment of the present disclosure, the charging box further includes a voltage acquisition module and a current acquisition module, the voltage acquisition module and the current acquisition module are respectively connected to the micro control unit, the voltage acquisition module is used to send the real-time charging voltage of the battery to be charged to the micro control unit, and the current acquisition module is used to send the real-time charging current of the battery to be charged to the micro control unit. The voltage acquisition module and the current acquisition module are respectively arranged between the charging voltage control module and the battery to be charged, and can respectively detect the real-time charging voltage value and the real-time charging current value of the battery to be charged. Further, the micro control unit obtains the real-time charging voltage value from the voltage acquisition module, obtains the serial port voltage information from the battery communication serial port, and compares the two. When the difference between the two is greater than the preset voltage difference, the micro control unit will interrupt charging and generate an abnormal warning and upload it to the wireless handheld terminal. Further, the micro control unit obtains the real-time charging current value from the current acquisition module, obtains the serial port current information from the battery communication serial port, and compares the two. When the difference between the two is greater than the preset current difference, the micro control unit will interrupt charging and generate an abnormal warning and upload it to the wireless handheld terminal.

[0090] Figure 7A schematic diagram showing the appearance of a charging box in a wireless intelligent charging management system according to an embodiment of the present disclosure. Figure 7 As shown, the charging box also includes an indicator light module, which is arranged outside the charging box. The indicator light module includes a communication status indicator light, a working status indicator light and an alarm status indicator light. The communication status indicator light is used to indicate the communication status between the charging box and the wireless handheld terminal, and the working status indicator light is used to indicate the charging status of the charging box; the alarm status indicator light is used to indicate the abnormal status of the charging box and the battery to be charged. The charging box also includes a charging interface and a communication serial port, and the charging interface and the charging serial port are connected to the battery to be charged, and the battery to be charged is arranged outside the charging box. By arranging the indicator light module on the surface of the charging box, the user can intuitively observe the charging box and the working status and abnormal situation, and can timely find and deal with abnormal charging boxes in a large number of charging boxes. The charging box also includes a pairing button, which is used to make the charging box enter the pairing mode, match the charging box in the initial state with the wireless handheld terminal, synchronize the information of the charging box to the wireless handheld terminal, and the charging box can communicate with the wireless handheld terminal after the pairing is completed. The battery to be charged is arranged inside the charging box, and the battery to be charged and the charging box are connected by a power cord.

[0091] According to the implementation of the present disclosure, the wireless transceiver chip adopts the 868MHZ communication frequency band. The 868MHZ communication frequency band has a longer transmission distance and lower power consumption, and the communication distance can reach more than 50 meters. It is suitable for the technical solution of the present disclosure, where a large number of charging boxes are arranged in a factory building and wireless communication control is performed through a wireless handheld terminal. It can improve the signal reception range of the wireless handheld terminal and improve the battery life of the wireless handheld terminal.

[0092] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present disclosure is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other.

Claims

1. A wireless intelligent charging management system, characterized in that: It includes a wireless handheld terminal and multiple charging boxes, wherein: The wireless handheld terminal includes a CPU module, a touch display module, and a first wireless communication module; The touch display module is connected to the CPU module, and the touch display module is used to display the charging status of the charging box; The first wireless communication module is connected to the CPU module, and the first wireless communication module is used to communicate with the charging box, receive the working status of the charging box and send control instructions to the charging box; The charging box includes a micro control unit, an overvoltage protection module, a charging voltage control module, a charging current control module, a first wireless communication module, and a battery communication serial port; The overvoltage protection module is connected to the external power supply and the charging voltage control module respectively, and the overvoltage protection module is used to cut off the connection with the external power supply when the voltage of the external power supply is abnormal; The battery communication serial port is connected to the battery to be charged and the micro control unit respectively, and is used to feed back the status information of the battery to be charged to the micro control unit; The charging voltage control module is connected to the micro control unit and the charging current control module respectively, and the charging voltage control module is used to set the charging voltage to the rated charging voltage; The charging current control module is connected to the battery to be charged and the charging voltage control module respectively; The second wireless communication module is connected to the micro control unit, and the second wireless communication module is used for wireless communication with the wireless handheld terminal.

2. The system according to claim 1, characterized in that The charging voltage control module includes a switch board, a step-down power supply, a first diode and a second diode. The switch board and the step-down power supply are respectively connected in parallel with the overvoltage protection module. The first diode is connected to the switch board for control, and the second diode is connected to the step-down power supply.

3. The system according to claim 1, characterized in that The overvoltage protection module includes an input terminal, an output terminal, a ground terminal, a first voltage-stabilizing diode, a second voltage-stabilizing diode, a third voltage-stabilizing diode, a first voltage-dividing resistor, a second voltage-dividing resistor, a third voltage-dividing resistor, a fourth voltage-dividing resistor, a first MOS switch, and a second MOS switch, wherein: The anode of the first voltage-dividing diode is respectively connected to the first end of the first voltage-dividing resistor, the second end of the second voltage-dividing resistor, and the gate of the first MOS switch; the cathode of the first voltage-dividing diode is respectively connected to the input end, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor, and the source of the second MOS switch; The anode of the second voltage-dividing diode is respectively connected to the drain of the first MOS switch, the first end of the third voltage-dividing resistor, the gate of the second MOS switch, and the second end of the fourth voltage-dividing resistor; the cathode of the second voltage-dividing diode is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the second end of the third voltage-dividing resistor, and the source of the second MOS switch; The anode of the third voltage-stabilizing diode is connected to the ground terminal and the first end of the fourth voltage-dividing resistor respectively; the cathode of the third voltage-stabilizing diode is connected to the first end of the second voltage-dividing resistor; The first end of the first voltage-dividing resistor is respectively connected to the anode of the first voltage-dividing diode, the second end of the second voltage-dividing resistor and the gate of the first MOS switch; the second end of the first voltage-dividing resistor is respectively connected to the input end, the source of the first MOS switch, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor and the source of the second MOS switch; The first end of the second voltage-dividing resistor is connected to the cathode of the third voltage-dividing diode, and the second end of the second voltage-dividing resistor is respectively connected to the anode of the first voltage-dividing diode, the first end of the first voltage-dividing resistor and the gate of the first MOS switch; The first end of the third voltage-dividing resistor is respectively connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the gate of the second MOS switch, and the second end of the fourth voltage-dividing resistor; the second end of the third voltage-dividing resistor is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, and the source of the second MOS switch; The first end of the fourth voltage-dividing resistor is respectively connected to the anode of the third voltage-dividing diode and the grounding end; the second end of the fourth voltage-dividing resistor is respectively connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, and the source of the second MOS switch; The gate of the first MOS switch is respectively connected to the anode of the first voltage-dividing diode, the first end of the first voltage-dividing resistor, and the second end of the second voltage-dividing resistor; the source of the first MOS switch is respectively connected to the input end, the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the cathode of the second voltage-dividing diode, the second end of the third voltage-dividing resistor, and the source of the second MOS switch; the drain of the first MOS switch is connected to the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, the gate of the second MOS, and the second end of the fourth voltage-dividing resistor; The gate of the second MOS switch is connected to the drain of the first MOS switch, the anode of the second voltage-dividing diode, the first end of the third voltage-dividing resistor, and the second end of the fourth voltage-dividing resistor; the source of the second MOS switch is connected to the cathode of the first voltage-dividing diode, the second end of the first voltage-dividing resistor, the source of the first MOS switch, the cathode of the second voltage-dividing diode, and the second end of the third voltage-dividing resistor; and the drain of the second MOS switch is connected to the output end.

4. The system according to claim 1, characterized in that The first wireless communication module and the second wireless communication module include: a wireless transceiver chip, a micro control unit, a transceiver switching circuit, an impedance matching circuit and a communication antenna. in: The wireless transceiver chip is connected to the micro control unit and the transceiver switching circuit; The first end of the impedance matching circuit is connected to the transceiver switching circuit, and the second end of the impedance matching circuit is connected to the communication antenna.

5. The system according to claim 4, characterized in that The impedance matching circuit includes a π-type impedance matching circuit, and the π-type impedance matching circuit includes a first capacitor, a second capacitor, a third capacitor and a matching inductor. The first end of the first capacitor and the first end of the second capacitor are grounded respectively, the first end of the matching inductor is connected to the second end of the first capacitor and the second end of the third capacitor respectively, and the first end of the third capacitor is connected to the transceiver switching circuit; the second end of the matching inductor is connected to the second end of the second capacitor and the communication antenna respectively.

6. The system according to claim 1, characterized in that The wireless handheld terminal also includes a battery module, an alarm module, a real-time clock module, a charging management module, a USB module and a storage module; The battery module is connected to the CPU module, and the battery module is used to supply power to the wireless handheld terminal; The alarm module is connected to the CPU module, and is used to respond to the alarm instruction issued by the CPU module and send alarm information to the user; The real-time clock module is connected to the CPU module, and the real-time clock module is used to obtain real-time time; The USB module is connected to the CPU module and the charging management module respectively, and is used to transmit signals to the CPU module and the storage module and to charge the battery module; The storage module is connected to the CPU module, and the storage module is used to store the system firmware information of the wireless handheld terminal and the firmware information of the charging box; The charging management module is connected to the battery module and the USB module respectively.

7. The system according to claim 1, characterized in that The charging box also includes a voltage acquisition module and a current acquisition module, and the voltage acquisition module and the current acquisition module are respectively connected to the micro control unit. The voltage acquisition module is used to send the real-time charging voltage of the battery to be charged to the micro control unit, and the current acquisition module is used to send the real-time charging current of the battery to be charged to the micro control unit.

8. The system according to claim 1, characterized in that The charging box also includes an indicator light module, which is arranged on the outside of the charging box. The indicator light module includes a communication status indicator light, a working status indicator light and an alarm status indicator light. The communication status indicator light is used to indicate the communication status between the charging box and the wireless handheld terminal, and the working status indicator light is used to indicate the charging status of the charging box; the alarm status indicator light is used to indicate the abnormal status of the charging box and the battery to be charged.

9. The system according to claim 4, characterized in that The wireless transceiver chip adopts the 868MHZ communication frequency band.

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