Charger management control circuit
By using the charger management and control circuit and multiple modules, precise charging adjustment and unified data management of the charger can be achieved, which solves the problems of energy waste and low management efficiency of traditional chargers and improves the working efficiency of the charger.
Patent Information
- Application Number
- CN202422873790.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-22
AI Technical Summary
Traditional chargers lack a control system, leading to energy waste, inaccurate charging adjustment, and inability to uniformly manage charger and battery data, resulting in poor work efficiency.
It employs a main control module, voltage and current detection module, contactor control module, 4G communication module, RS485 communication module, data storage module, temperature sensing module, three-phase power measurement module, and three-phase power control module to achieve precise charging regulation and unified data management of the charger.
By monitoring the charger status in real time, energy waste is reduced, management efficiency is improved, and precise charging adjustment and unified data management are achieved.
Smart Images
Figure CN223553057U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charger control, and in particular to a charger management and control circuit. Background Technology
[0002] Traditional chargers lack a control system, which means they cannot disconnect themselves and the battery power source after charging is complete, resulting in energy waste. They also cannot perform precise battery charging regulation, manage charger and battery data in a unified manner, or process battery data to monitor battery wear, leading to poor charger efficiency. Utility Model Content
[0003] In view of this, the purpose of this utility model is to provide a charger management and control circuit to solve the problem that existing chargers cannot perform precise charging regulation.
[0004] This utility model provides a charger management and control circuit, including: a main control module, a voltage and current detection module, a contactor control module, a 4G communication module, an RS485 communication module, a data storage module, a temperature sensing module, a three-phase power measurement module, a three-phase power supply control module, a three-phase power supply, a charger, and a device to be charged;
[0005] The main control module is connected to the voltage and current detection module, contactor control module, 4G communication module, RS485 communication module, data storage module, temperature sensing module, three-phase power measurement module and three-phase power control module;
[0006] The three-phase power control module is connected to the three-phase power supply, the three-phase power measurement module, and the charger.
[0007] The charger is connected to the voltage and current detection module, the contactor control module, and the device to be charged.
[0008] Preferably, the main control module uses the ESP32 main control chip.
[0009] Preferably, the voltage and current detection module includes: operational amplifier U8 and operational amplifier U9;
[0010] The voltage output terminal of the charger is connected to operational amplifier U8;
[0011] The current output terminal of the charger is connected to operational amplifier U9;
[0012] Operational amplifiers U8 and U9 are both connected to the main control module.
[0013] Preferably, the temperature sensing module includes: a temperature sensor, an interface U48, and an interface U49;
[0014] The temperature sensor is connected to interfaces U48 and U49, both of which are connected to the main control module.
[0015] Preferably, the contactor control module includes: a switching relay K1 and a transistor Q1;
[0016] The main control module, transistor Q1, switching relay K1, and charger are connected in sequence.
[0017] Preferably, the three-phase power control module includes: a driver chip U6, a magnetic latching relay U7, a driver chip U10, a magnetic latching relay U11, a driver chip U13, and a magnetic latching relay U14;
[0018] The U-phase output terminal of the three-phase power supply, the magnetic latching relay U7, and the driver chip U6 are connected in sequence.
[0019] The V-phase output terminal of the three-phase power supply, the magnetic latching relay U11, and the driver chip U10 are connected in sequence.
[0020] The W-phase output terminal of the three-phase power supply, the magnetic latching relay U14 and the driver chip U13 are connected in sequence.
[0021] Magnetic latching relays U7, U11, and U14 are all connected to the three-phase power measurement module and the charger.
[0022] Preferably, the three-phase power measurement module includes: a power meter chip U27, a first current transformer, a voltage transformer L3, a power meter chip U39, a second current transformer, a voltage transformer L5, a power meter chip U50, a third current transformer, and a voltage transformer L6.
[0023] The magnetic latching relay U7 is connected to the first current transformer and the voltage transformer L3. The first current transformer and the voltage transformer L3 are both connected to the fuel meter chip U27. The fuel meter chip U27 is connected to the main control module.
[0024] The magnetic latching relay U11 is connected to the second current transformer and the voltage transformer L5. The second current transformer and the voltage transformer L5 are both connected to the fuel meter chip U39. The fuel meter chip U39 is connected to the main control module.
[0025] The magnetic latching relay U14 is connected to the third current transformer and the voltage transformer L6. Both the third current transformer and the voltage transformer L6 are connected to the fuel meter chip U50. The fuel meter chip U50 is connected to the main control module.
[0026] Preferred:
[0027] The first current transformer is either a wire-type current transformer U28 or a through-hole current transformer U24.
[0028] The second current transformer is either a wire-type current transformer U40 or a through-hole current transformer U34.
[0029] The first current transformer is either a wire-type current transformer U51 or a through-hole current transformer U47.
[0030] This utility model has the following beneficial effects:
[0031] The charger's operating status is monitored in real time by a voltage and current detection module, and the three-phase power supply's operating status is monitored in real time by a three-phase power measurement module. The main control module feeds back the charger's operating status to the contactor control module, and the main control module feeds back the three-phase power supply's operating status to the three-phase power supply control module. The contactor control module and the three-phase power supply control module work together to precisely regulate the charger's charging process, reducing energy waste. Real-time data communication is also achieved through a 4G communication module and an RS485 communication module, uploading the charger's data to the control platform for unified management, thereby improving the charger's management efficiency. Attached Figure Description
[0032] Figure 1 This is a structural diagram of the charger management and control circuit;
[0033] Figure 2 The schematic diagram of the main control module;
[0034] Figure 3 This is the schematic diagram of the voltage and current detection module;
[0035] Figure 4 This is a schematic diagram of the temperature sensing module;
[0036] Figure 5 This is the schematic diagram of the contactor control module;
[0037] Figure 6 This is the schematic diagram of a three-phase power supply control module;
[0038] Figure 7 This is a schematic diagram of a three-phase power measurement module.
[0039] Figure 8 This is a schematic diagram of a 4G communication module.
[0040] Figure 9 This is a schematic diagram of the data storage module;
[0041] Figure 10 This is a schematic diagram of an RS485 communication module.
[0042] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0043] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0044] Reference Figure 1 This utility model provides a charger management and control circuit, including: a main control module, a voltage and current detection module, a contactor control module, a 4G communication module, an RS485 communication module, a data storage module, a temperature sensing module, a three-phase power measurement module, a three-phase power supply control module, a three-phase power supply, a charger, and a device to be charged;
[0045] The main control module is connected to the voltage and current detection module, contactor control module, 4G communication module, RS485 communication module, data storage module, temperature sensing module, three-phase power measurement module and three-phase power control module;
[0046] The three-phase power control module is connected to the three-phase power supply, the three-phase power measurement module, and the charger.
[0047] The charger is connected to the voltage and current detection module, the contactor control module, and the device to be charged.
[0048] Specifically, the functions of each module are as follows:
[0049] Temperature sensing module: measures the internal temperature of the charger, and sends an alarm signal when the temperature is too high and shuts off the AC input of the charger.
[0050] Three-phase power measurement module: used to measure the AC input voltage, current and power of a three-phase power supply.
[0051] Three-phase power control module: used to shut off the AC input of the charger and control the AC input of the charger.
[0052] Voltage and current detection module: used to detect the voltage, current and power at the output of the charger.
[0053] Contactor control circuit: Used to control the contactor on the charger to disconnect the charger's output.
[0054] Data storage module: Used to store configuration parameters for different chargers.
[0055] RS485 communication module: Used to communicate with chargers that have an RS485 interface.
[0056] 4G communication module: Used to send data from the charger to the server.
[0057] As one embodiment, the schematic diagram of the main control module is as follows: Figure 2 As shown;
[0058] The main control module uses the ESP32 main control chip.
[0059] As one embodiment, the schematic diagram of the voltage and current detection module is as follows: Figure 3 As shown;
[0060] The voltage and current detection module includes: operational amplifier U8 and operational amplifier U9;
[0061] The voltage output terminal of the charger is connected to operational amplifier U8;
[0062] The current output terminal of the charger is connected to operational amplifier U9;
[0063] Operational amplifiers U8 and U9 are both connected to the main control module.
[0064] Specifically, operational amplifiers U8 and U9 are model OP07. The OP07 is an ultra-low offset voltage (75μV maximum) operational amplifier with low input bias current (±4NA) and high open-loop gain (200V / mV) providing high accuracy when amplifying signals. In this design, the operational amplifiers function as impedance transformers during voltage acquisition, making the input impedance very high, thus minimizing its impact on the input signal, and making the output impedance very low, thus minimizing the impact of the AD input impedance on the input signal. The ESP32 reads the voltage and current values through the AD interface and calculates the charger's voltage and current values.
[0065] As one embodiment, the schematic diagram of the temperature sensing module is as follows: Figure 4 As shown;
[0066] The temperature sensing module includes: a temperature sensor, interface U48, and interface U49;
[0067] The temperature sensor is connected to interfaces U48 and U49, both of which are connected to the main control module.
[0068] Specifically, interfaces U48 and U49 are two external temperature sensor interfaces. In this design, the ESP32 obtains the charger temperature from the temperature sensor to prevent the charger from being damaged by overheating during charging.
[0069] As one embodiment, the schematic diagram of the contactor control module is as follows: Figure 5 As shown:
[0070] The contactor control module includes: a switching relay K1 and a transistor Q1;
[0071] The main control module, transistor Q1, switching relay K1, and charger are connected in sequence.
[0072] Specifically, the contactor control module is connected to the charger contactor via an interface. When the ESP32 detects an error message, it activates the contactor on the charger to cut off the charger's output power.
[0073] As one embodiment, the schematic diagram of the three-phase power supply control module is as follows: Figure 6 As shown:
[0074] The three-phase power control module includes: driver chip U6, magnetic latching relay U7, driver chip U10, magnetic latching relay U11, driver chip U13 and magnetic latching relay U14;
[0075] The U-phase output terminal of the three-phase power supply, the magnetic latching relay U7, and the driver chip U6 are connected in sequence.
[0076] The V-phase output terminal of the three-phase power supply, the magnetic latching relay U11, and the driver chip U10 are connected in sequence.
[0077] The W-phase output terminal of the three-phase power supply, the magnetic latching relay U14 and the driver chip U13 are connected in sequence.
[0078] Magnetic latching relays U7, U11, and U14 are all connected to the three-phase power measurement module and the charger.
[0079] Specifically, the ESP32 will activate the magnetic latching relay to shut off the power supply to the charger when it determines that the charger battery is fully charged or when a charger malfunctions.
[0080] As one embodiment, the schematic diagram of the three-phase power measurement module is as follows: Figure 7 As shown:
[0081] The three-phase power measurement module includes: a power meter chip U27, a first current transformer, a voltage transformer L3, a power meter chip U39, a second current transformer, a voltage transformer L5, a power meter chip U50, a third current transformer, and a voltage transformer L6.
[0082] The magnetic latching relay U7 is connected to the first current transformer and the voltage transformer L3. The first current transformer and the voltage transformer L3 are both connected to the fuel meter chip U27. The fuel meter chip U27 is connected to the main control module.
[0083] The magnetic latching relay U11 is connected to the second current transformer and the voltage transformer L5. The second current transformer and the voltage transformer L5 are both connected to the fuel meter chip U39. The fuel meter chip U39 is connected to the main control module.
[0084] The magnetic latching relay U14 is connected to the third current transformer and the voltage transformer L6. Both the third current transformer and the voltage transformer L6 are connected to the fuel meter chip U50. The fuel meter chip U50 is connected to the main control module.
[0085] Specifically, U27, U39, and U50 are TM7780 fuel gauge chips with a power supply voltage rejection ratio of <0.01 / V, an active power accuracy of ±0.2% meeting the accuracy requirements of the 50 / 60Hz IEC 687 / 1036 standard, and an output current RMS or voltage RMS accuracy of ±0.5%.
[0086] As one example:
[0087] The first current transformer is either a wire-type current transformer U28 or a through-hole current transformer U24.
[0088] The second current transformer is either a wire-type current transformer U40 or a through-hole current transformer U34.
[0089] The first current transformer is either a wire-type current transformer U51 or a through-hole current transformer U47.
[0090] Specifically, this design uses two types of current transformers, selecting either wire-through or through-hole type based on the current magnitude. The signals from each phase's current and voltage transformers are filtered by resistors and capacitors before being transmitted to the TM7780. After data processing, the frequency signal is output through a pin. The ESP32 allows the TM7780 to select whether to output voltage or current via a pin setting. After acquiring the frequency signal, the voltage, current, and power data are calculated using formulas.
[0091] As one embodiment, the schematic diagram of the 4G communication module is as follows: Figure 8 As shown:
[0092] The U56 is an AIR780EP module that supports 4G long-range wireless communication and is a low-power 4G module. In this design, data from the charger is transmitted to the server for processing over a long distance using the 4G module.
[0093] The ESP32 itself can transmit data via WiFi. If there is no WiFi network where the charger is installed or if its own WiFi is faulty, the 4G communication module can be activated for data communication.
[0094] As one embodiment, the schematic diagram of the data storage module is as follows: Figure 9 As shown:
[0095] EEPROM is used for data storage.
[0096] As one embodiment, the schematic diagram of the RS485 communication module is as follows: Figure 10 As shown:
[0097] The ESP32 communicates with a charger equipped with an RS485 communication interface via the RS485 interface to obtain data from the charger and control its status.
[0098] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.
[0099] The sequence numbers of the above-described embodiments of this utility model are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. In the unit claims listing several devices, these devices may be embodied by the same hardware item. The use of the terms "first," "second," and "third," etc., does not indicate any order and can be interpreted as identifiers.
[0100] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A charger management and control circuit, characterized in that, include: Main control module, voltage and current detection module, contactor control module, 4G communication module, RS485 communication module, data storage module, temperature sensing module, three-phase power measurement module, three-phase power control module, three-phase power supply, charger and device to be charged; The main control module is connected to the voltage and current detection module, contactor control module, 4G communication module, RS485 communication module, data storage module, temperature sensing module, three-phase power measurement module and three-phase power control module; The three-phase power control module is connected to the three-phase power supply, the three-phase power measurement module, and the charger. The charger is connected to the voltage and current detection module, the contactor control module, and the device to be charged.
2. The charger management and control circuit according to claim 1, characterized in that, The main control module uses the ESP32 main control chip.
3. The charger management and control circuit according to claim 1, characterized in that, The voltage and current detection module includes: operational amplifier U8 and operational amplifier U9; The charger's voltage output terminal is connected to operational amplifier U8; The charger's current output terminal is connected to operational amplifier U9; Operational amplifiers U8 and U9 are both connected to the main control module.
4. The charger management and control circuit according to claim 1, characterized in that, The temperature sensing module includes: a temperature sensor, interface U48, and interface U49; The temperature sensor is connected to interfaces U48 and U49, both of which are connected to the main control module.
5. The charger management and control circuit according to claim 1, characterized in that, The contactor control module includes: a switching relay K1 and a transistor Q1; The main control module, transistor Q1, switching relay K1, and charger are connected in sequence.
6. The charger management and control circuit according to claim 1, characterized in that, The three-phase power control module includes: driver chip U6, magnetic latching relay U7, driver chip U10, magnetic latching relay U11, driver chip U13, and magnetic latching relay U14. The U-phase output terminal of the three-phase power supply, the magnetic latching relay U7, and the driver chip U6 are connected in sequence. The V-phase output terminal of the three-phase power supply, the magnetic latching relay U11, and the driver chip U10 are connected in sequence. The W-phase output terminal of the three-phase power supply, the magnetic latching relay U14 and the driver chip U13 are connected in sequence. Magnetic latching relays U7, U11, and U14 are all connected to the three-phase power measurement module and the charger.
7. The charger management and control circuit according to claim 6, characterized in that, The three-phase power measurement module includes: a power meter chip U27, a first current transformer, a voltage transformer L3, a power meter chip U39, a second current transformer, a voltage transformer L5, a power meter chip U50, a third current transformer, and a voltage transformer L6. The magnetic latching relay U7 is connected to the first current transformer and the voltage transformer L3. The first current transformer and the voltage transformer L3 are both connected to the fuel meter chip U27. The fuel meter chip U27 is connected to the main control module. The magnetic latching relay U11 is connected to the second current transformer and the voltage transformer L5. The second current transformer and the voltage transformer L5 are both connected to the fuel meter chip U39. The fuel meter chip U39 is connected to the main control module. The magnetic latching relay U14 is connected to the third current transformer and the voltage transformer L6. Both the third current transformer and the voltage transformer L6 are connected to the fuel meter chip U50. The fuel meter chip U50 is connected to the main control module.
8. The charger management and control circuit according to claim 7, characterized in that: The first current transformer is either a wire-type current transformer U28 or a through-hole current transformer U24. The second current transformer is either a wire-type current transformer U40 or a through-hole current transformer U34. The first current transformer is either a wire-type current transformer U51 or a through-hole current transformer U47.