Shared charging access cabinet control system

Abstract

The utility model discloses a shared charging access cabinet control system. Comprising a main control board integrated with a main controller, a signal processing circuit used for processing an input signal of an analog quantity collector, an isolation protection circuit used for processing an input signal of a switching value collector, and a motor overcurrent protection circuit used for collecting and protecting the working safety of a motor, wherein the signal processing circuit, the isolation protection circuit and the motor overcurrent protection circuit are connected with the main controller; the output end of the main controller is connected with a motor driving circuit used for driving the motor to work and a relay protection circuit used for controlling the on-off output device to work. According to the utility model, signal processing or isolation protection is carried out on signals collected by each collector, relay protection is carried out on each on-off output device, a plurality of motors are driven through the compact motor driving circuit, and as long as one motor is abnormal, the motor can be driven by the motor driving circuit. If yes, overcurrent protection is carried out on the working motor through the motor overcurrent protection circuit, and the main controller prompts a worker to carry out troubleshooting, so that the safety coefficient is improved.

Description

Technical Field

[0001] This utility model belongs to the field of battery cabinet control technology, specifically relating to a shared charging storage cabinet control system. Background Technology

[0002] Shared charging lockers, also known as charging cabinets for shared electric vehicle batteries, are a new type of charging equipment that has emerged in recent years with the widespread use of electric vehicles, especially shared electric vehicles and those used in the food delivery and express delivery industries. These devices are specifically designed to solve the range anxiety problem of electric vehicles, greatly improving the efficiency and user experience of electric vehicles by providing convenient battery replacement and charging services.

[0003] Replacing lithium batteries with shared charging lockers and recharging the removed batteries offers the advantages of fast battery swapping and no long waiting times. The lockers can monitor battery charging status, voltage, current, and other parameters in real time, ensuring a safe and efficient charging process. However, existing charging locker control systems are complex, with intricate circuitry and potential safety hazards. Therefore, a new shared charging locker control system is urgently needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a shared charging storage cabinet control system to address the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a shared charging storage cabinet control system, characterized in that: it includes a main control board integrating a main controller and signal processing circuits connected to the main controller for processing analog quantity acquisition device input signals, isolation protection circuits for processing digital quantity acquisition device input signals, and motor overcurrent protection circuits for acquiring and protecting the safe operation of the motor. The output terminal of the main controller is connected to a motor drive circuit for driving the motor and a relay protection circuit for controlling the operation of the digital quantity output device.

[0006] The system comprises multiple analog quantity acquisition devices, signal processing circuits, digital quantity acquisition devices, isolation protection circuits, digital quantity output devices, and relay protection circuits. The number of analog quantity acquisition devices is equal to and corresponds one-to-one with the number of signal processing circuits, the number of digital quantity acquisition devices is equal to and corresponds one-to-one with the number of isolation protection circuits, and the number of digital quantity output devices is equal to and corresponds one-to-one with the number of relay protection circuits. The analog quantity acquisition devices include pressure sensors for identifying whether there are batteries in the compartment, voltage sensors for identifying whether the batteries are fully charged, temperature and humidity sensors for identifying the temperature and humidity of the compartment environment, gas sensors for identifying whether there is abnormal gas in the storage cabinet, and positioning sensors for identifying whether the battery compartment has been moved into place. The digital quantity acquisition devices include multiple button interfaces and a human-machine interface screen. The digital quantity output devices include electronic locks, thermal aerosol automatic fire extinguishers, and cooling fans.

[0007] The above-mentioned shared charging storage cabinet control system is characterized in that: the gas sensor includes a hydrogen sensor, a methane sensor, and a carbon monoxide sensor; the positioning sensor includes a laser sensor, a Hall sensor, or an infrared sensor.

[0008] The aforementioned shared charging storage cabinet control system is characterized in that: the main controller includes an STM32F407VGT6 main control chip; the signal processing circuit includes an operational amplifier U25.1 of model LTC8842XS8 / R8; the non-inverting input of operational amplifier U25.1 is connected to the corresponding analog signal acquisition device through resistor R59; the connection between the non-inverting input of operational amplifier U25.1 and resistor R59 is grounded through parallel resistor R64 and capacitor C56; the output of operational amplifier U25.1 is divided into two paths, one path is connected to the inverting input of operational amplifier U25.1 through parallel capacitor C48 and resistor R48, and the other path is connected to pin 23 of the STM32F407VGT6 main control chip through resistor R54; the inverting input and non-inverting input of operational amplifier U25.1 are connected through capacitor C52.

[0009] The aforementioned shared charging storage cabinet control system is characterized in that: the motor drive circuit includes a transceiver U15 (model SN74AHCT245PWR), a power driver U16 (model KC8324MOS), and field-effect transistors Q7 and Q8 (model VBE5415). Pins 2 and 3 of the transceiver U15 are connected to pin 40 of the STM32F407VGT6 main control chip, and pins 4 and 5 of the transceiver U15 are connected to pin 42 of the STM32F407VGT6 main control chip. Pins 6 and 7 are connected to pin 44 of the STM32F407VGT6 main control chip. Pins 8 and 9 of transceiver U15 are connected to pin 45 of the STM32F407VGT6 main control chip. Pins 18, 17, 16, 15, 14, and 13 of transceiver U15 are connected to pins 9, 10, 11, 12, 13, and 14 of the power driver U16 via 10Ω resistors. Pin 7 of the power driver U16 is connected to pin G2 of the field-effect transistor Q7 via a parallel resistor R78 and a Zener diode D22. Pin 5 of the power driver U16 is connected to pin G2 of the field-effect transistor Q8 via a parallel resistor R79 and a Zener diode D23. Pins S2 of both the field-effect transistors Q7 and Q8 are connected to an 8-24V DC power supply. Pins D1 / D2 of the field-effect transistor Q7 are divided into four paths: the first path drives the first motor; the second path connects to the anode of diode D25; the third path connects to the cathode of diode D31; and the fourth path connects to pins D1 / D2 of the field-effect transistor Q8 via a bidirectional TVS transient suppression diode D30. The D1 / D2 pins of Q8 drive the second motor and are also connected to the anode of diode D26 and the cathode of diode D32. The cathodes of diodes D25 and D26 are both connected to a DC 8-24V power supply. The anodes of diodes D31 and D32 are both grounded. The G1 pin of the field-effect transistor Q7 is connected to the 6th pin of the power driver U16 via a parallel resistor R104 and a Zener diode D38. The G1 pin of the field-effect transistor Q8 is connected to the 8th pin of the power driver U16 via a parallel resistor R105 and a Zener diode D39.

[0010] The aforementioned shared charging storage cabinet control system is characterized in that: the motor overcurrent protection circuit includes operational amplifiers U27.1 and U27.2 of model LTC8842XS8 / R8. The inverting input terminal of operational amplifier U27.1 is divided into two paths: one path is grounded through a 1kΩ resistor, and the other path is connected to the output terminal of operational amplifier U27.1 through a parallel capacitor C73 and a 1001kΩ resistor. The non-inverting input terminal of operational amplifier U27.1 is divided into two paths: one path is connected to the S1 pin of field-effect transistor Q7, the S1 pin of field-effect transistor Q8, and one end of resistor R103 through a 1kΩ resistor, and the other path is grounded through a parallel 1kΩ resistor and capacitor C74; the other end of resistor R103 is connected to the anode of diode D32. The output of amplifier U27.1 is connected to the non-inverting input of operational amplifier U27.2 via resistor R98. The inverting input of operational amplifier U27.2 is divided into two paths: one path is grounded via resistor R95, and the other path is connected to +3.3V via sliding resistor R90. The output of operational amplifier U27.2 is connected to pin 1 of optocoupler EL357N(C)(TA)-GU20 via resistor R109. Pins 2 and 3 of optocoupler EL357N(C)(TA)-GU20 are grounded. Pin 4 of optocoupler EL357N(C)(TA)-GU20 is divided into two paths: one path is connected to +3.3V via resistor R111, and the other path is connected to pin 43 of STM32F407VGT6 main control chip.

[0011] The above-mentioned shared charging storage cabinet control system is characterized in that: the main controller is further connected to a communication module, which includes a CAN bus communication module, an RS485 serial port communication module, a TTL communication module, a Bluetooth module, a WIFI module and a 4G communication module.

[0012] The beneficial effects of this utility model are that it has a novel and reasonable design, performs signal processing or isolation protection on the signals collected by each acquisition unit, provides relay protection for each switch output unit, and drives multiple motors through a compact motor drive circuit. If any motor malfunctions, the motor overcurrent protection circuit will protect the working motors from overcurrent. The main controller will prompt the staff to troubleshoot the fault, thus improving the safety factor and facilitating its widespread use.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a circuit block diagram of the present invention.

[0015] Figure 2 This is the circuit schematic diagram of the main controller of this utility model.

[0016] Figure 3 This is a circuit diagram of the signal processing circuit of this utility model.

[0017] Figure 4 This is a circuit diagram of the motor drive circuit of this utility model.

[0018] Figure 5 This is the circuit diagram of the motor overcurrent protection circuit of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1—Main controller; 2—Analog signal acquisition unit; 3—Signal processing circuit;

[0021] 4—Switch input acquisition unit; 5—Isolation protection circuit; 6—Switch output unit;

[0022] 7—Relay protection circuit; 8—Motor drive circuit; 9—Motor;

[0023] 10—Motor overcurrent protection circuit; 11—Communication module. Detailed Implementation

[0024] like Figures 1 to 5 As shown, this utility model includes a main control board integrating a main controller 1, a signal processing circuit 3 connected to the main controller 1 for processing the input signals of the analog quantity acquisition device 2, an isolation protection circuit 5 for processing the input signals of the digital quantity acquisition device 4, and a motor overcurrent protection circuit 10 for acquiring and protecting the safe operation of the motor 9. The output terminal of the main controller 1 is connected to a motor drive circuit 8 for driving the motor 9 and a relay protection circuit 7 for controlling the operation of the digital quantity output device 6.

[0025] The number of analog quantity acquisition devices 2, signal processing circuits 3, digital quantity acquisition devices 4, isolation protection circuits 5, digital quantity output devices 6, and relay protection circuits 7 are all multiple. The number of analog quantity acquisition devices 2 and signal processing circuits 3 are equal and correspond one-to-one. The number of digital quantity acquisition devices 4 and isolation protection circuits 5 are equal and correspond one-to-one. The number of digital quantity output devices 6 and relay protection circuits 7 are equal and correspond one-to-one. The analog quantity acquisition devices 2 include a pressure sensor for identifying whether there are batteries in the compartment, a voltage sensor for identifying whether the batteries are fully charged, a temperature and humidity sensor for identifying the temperature and humidity of the compartment environment, a gas sensor for identifying whether there is abnormal gas in the storage cabinet, and a positioning sensor for identifying whether the battery compartment has been moved into place. The digital quantity acquisition devices 4 include multiple button interfaces and a human-machine interface screen. The digital quantity output devices 6 include an electronic lock, a thermal aerosol automatic fire extinguisher, and a cooling fan.

[0026] In this embodiment, the gas sensor includes a hydrogen sensor, a methane sensor, and a carbon monoxide sensor; the positioning sensor includes a laser sensor, a Hall sensor, or an infrared sensor.

[0027] In this embodiment, the main controller 1 includes an STM32F407VGT6 main control chip, and the signal processing circuit 3 includes an operational amplifier U25.1 of model LTC8842XS8 / R8. The non-inverting input of the operational amplifier U25.1 is connected to the corresponding analog signal acquisition device 2 through a resistor R59. The connection between the non-inverting input of the operational amplifier U25.1 and the resistor R59 is grounded through a parallel resistor R64 and a capacitor C56. The output of the operational amplifier U25.1 is divided into two paths: one path is connected to the inverting input of the operational amplifier U25.1 through a parallel capacitor C48 and a resistor R48, and the other path is connected to pin 23 of the STM32F407VGT6 main control chip through a resistor R54. The inverting input and the non-inverting input of the operational amplifier U25.1 are connected through a capacitor C52.

[0028] It should be noted that in actual use, the analog signal acquisition unit 2 uses a 4-20mA input sensor, with resistor R59 having a resistance of 1kΩ, resistor R64 having a resistance of 150Ω, capacitor C56 having a capacitance of 100nF, capacitor C48 having a capacitance of 33pF, resistor R48 having a resistance of 1kΩ, resistor R54 having a resistance of 10kΩ, and capacitor C52 having a capacitance of 33pF.

[0029] In this embodiment, the motor drive circuit 8 includes a transceiver U15 (model SN74AHCT245PWR), a power driver U16 (model KC8324MOS), and field-effect transistors Q7 and Q8 (model VBE5415). Pins 2 and 3 of the transceiver U15 are connected to pin 40 of the STM32F407VGT6 main control chip, pins 4 and 5 of the transceiver U15 are connected to pin 42 of the STM32F407VGT6 main control chip, and pins 6 and 7 of the transceiver U15 are connected to ST... Pin 44 of the M32F407VGT6 main control chip is connected. Pins 8 and 9 of transceiver U15 are connected to pin 45 of the STM32F407VGT6 main control chip. Pins 18, 17, 16, 15, 14, and 13 of transceiver U15 are connected to pins 9, 10, 11, 12, 13, and 14 of transistor power driver U16 via 10Ω resistors. Pin 7 of transistor power driver U16 is connected to pin G2 of MOSFET Q7 via a parallel resistor R78 and a Zener diode D22. Pin 5 of transistor 6 is connected to pin G2 of transistor Q8 via a parallel resistor R79 and a Zener diode D23. Pins S2 of both transistors Q7 and Q8 are connected to an 8-24V DC power supply. Pins D1 / D2 of transistor Q7 are divided into four paths: the first path drives the first motor; the second path connects to the anode of diode D25; the third path connects to the cathode of diode D31; and the fourth path connects to pins D1 / D2 of transistor Q8 via a bidirectional TVS transient voltage suppressor diode D30. Pin D of transistor Q8... 1 / D2 pin drives the second motor and is also connected to the anode of diode D26 and the cathode of diode D32. The cathodes of diodes D25 and D26 are both connected to a DC 8-24V power supply. The anodes of diodes D31 and D32 are both grounded. The G1 pin of field-effect transistor Q7 is connected to pin 6 of power driver U16 via a parallel resistor R104 and a Zener diode D38. The G1 pin of field-effect transistor Q8 is connected to pin 8 of power driver U16 via a parallel resistor R105 and a Zener diode D39.

[0030] It should be noted that in actual use, the resistance values ​​of resistors R78, R79, R104, and R105 are all 10kΩ.

[0031] In this embodiment, the motor overcurrent protection circuit 10 includes operational amplifiers U27.1 and U27.2 of model LTC8842XS8 / R8. The inverting input terminal of operational amplifier U27.1 is divided into two paths: one path is grounded through a 1kΩ resistor, and the other path is connected to the output terminal of operational amplifier U27.1 through a parallel capacitor C73 and a 1001kΩ resistor. The non-inverting input terminal of operational amplifier U27.1 is divided into two paths: one path is connected to the S1 pin of field-effect transistor Q7, the S1 pin of field-effect transistor Q8, and one end of resistor R103 through a 1kΩ resistor; the other path is grounded through a parallel 1kΩ resistor and capacitor C74. The other end of resistor R103 is connected to the anode of diode D32. Operational amplifier U27.1... The output terminal is connected to the non-inverting input terminal of operational amplifier U27.2 via resistor R98. The inverting input terminal of operational amplifier U27.2 is divided into two paths: one path is grounded via resistor R95, and the other path is connected to +3.3V via sliding resistor R90. The output terminal of operational amplifier U27.2 is connected to pin 1 of optocoupler EL357N(C)(TA)-GU20 via resistor R109. Pins 2 and 3 of optocoupler EL357N(C)(TA)-GU20 are grounded. Pin 4 of optocoupler EL357N(C)(TA)-GU20 is divided into two paths: one path is connected to +3.3V via resistor R111, and the other path is connected to pin 43 of STM32F407VGT6 main control chip.

[0032] It should be noted that in actual use, the capacitance of capacitor C73 is 33pF, the capacitance of capacitor C74 is 33pF, the resistance of resistor R103 is 2mΩ, the resistance of resistor R98 is 1kΩ, the resistance of resistor R95 is 4.7kΩ, the resistance of resistor R90 is 200kΩ, the resistance of resistor R109 is 330Ω, and the resistance of resistor R111 is 4.7kΩ.

[0033] In this embodiment, the main controller 1 is also connected to a communication module 11, which includes a CAN bus communication module, an RS485 serial port communication module, a TTL communication module, a Bluetooth module, a WIFI module and a 4G communication module.

[0034] When this utility model is used, the signals collected by each data acquisition device are processed or isolated for protection, and each switch output device is protected by relay. At the same time, multiple motors are driven by a compact motor drive circuit. If any motor malfunctions, the motor overcurrent protection circuit will protect the working motor from overcurrent, and the main controller will prompt the staff to troubleshoot the fault, thus improving the safety factor.

[0035] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A shared charging access cabinet control system, characterized by: The main control board integrated with the main controller (1) and the signal processing circuit (3) connected with the main controller (1) for processing the input signal of the analog quantity collector (2), the isolation protection circuit (5) for processing the input signal of the switch quantity collector (4) and the motor overcurrent protection circuit (10) for collecting and protecting the safe operation of the motor (9), the output end of the main controller (1) is connected with the motor drive circuit (8) for driving the motor (9) to work and the relay protection circuit (7) for controlling the switch quantity output device (6) to work; The number of analog quantity collectors (2), signal processing circuits (3), switch quantity collectors (4), isolation protection circuits (5), switch quantity output devices (6) and relay protection circuits (7) are multiple, the number of analog quantity collectors (2) and signal processing circuits (3) are equal and one-to-one corresponding, the number of switch quantity collectors (4) and isolation protection circuits (5) are equal and one-to-one corresponding, the number of switch quantity output devices (6) and relay protection circuits (7) are equal and one-to-one corresponding, the analog quantity collector (2) includes a pressure sensor for identifying whether the battery position has a battery, a voltage sensor for identifying whether the battery is fully charged, a temperature and humidity sensor for identifying the temperature and humidity of the battery position environment, a gas sensor for identifying whether the access cabinet has abnormal gas and a positioning sensor for identifying whether the battery compartment is moved to the position, the switch quantity collector (4) includes a plurality of key interfaces and a man-machine interaction screen, and the switch quantity output device (6) includes an electronic lock, a hot gas automatic fire extinguisher and a cooling fan.

2. A shared charging access cabinet control system according to claim 1, characterised in that: The gas sensor includes a hydrogen sensor, a methane sensor and a carbon monoxide sensor; the positioning sensor includes a laser sensor, a Hall sensor or an infrared sensor.

3. A shared charging access cabinet control system according to claim 1, wherein: The main controller (1) includes an STM32F407VGT6 main control chip, the signal processing circuit (3) includes an operational amplifier U25.1 with model number LTC8842XS8 / R8, the noninverting input end of the operational amplifier U25.1 is connected with the corresponding analog quantity collector (2) through a resistor R59, the connection end of the noninverting input end of the operational amplifier U25.1 and the resistor R59 is grounded through the parallel connection of a resistor R64 and a capacitor C56, the output end of the operational amplifier U25.1 is divided into two paths, one path is connected with the inverting input end of the operational amplifier U25.1 through the parallel connection of a capacitor C48 and a resistor R48, the other path is connected with the 23th pin of the STM32F407VGT6 main control chip through a resistor R54, and the inverting input end of the operational amplifier U25.1 is connected with the noninverting input end of the operational amplifier U25.1 through a capacitor C52.

4. A shared charging access cabinet control system as claimed in claim 3, wherein: The motor drive circuit (8) includes transceiver U15 of model SN74AHCT245PWR, tube power driver U16 of model KC8324MOS, field effect transistor Q7 and Q8 of model VBE5415, the 2nd pin and the 3rd pin of transceiver U15 are connected with the 40th pin of STM32F407VGT6 master control chip, the 4th pin and the 5th pin of transceiver U15 are connected with the 42nd pin of STM32F407VGT6 master control chip, the 6th pin and the 7th pin of transceiver U15 are connected with the 44th pin of STM32F407VGT6 master control chip, the 8th pin and the 9th pin of transceiver U15 are connected with the 45th pin of STM32F407VGT6 master control chip, the 18th, 17th, 16th, 15th, 14th, 13th pin of transceiver U15 is connected with the 9th, 10th, 11th, 12th, 13th, 14th pin of tube power driver U16 through 10Ω resistance respectively, the 7th pin of tube power driver U16 is connected with the G2 pin of field effect transistor Q7 through parallel resistance R78 and stabilizing diode D22, the 5th pin of tube power driver U16 is connected with the G2 pin of field effect transistor Q8 through parallel resistance R79 and stabilizing diode D23, the S2 pin of field effect transistor Q7 and the S2 pin of field effect transistor Q8 are connected with DC 8-24V power supply, the D1 / D2 pin of field effect transistor Q7 is divided into four ways, the first way drives the first motor, the second way is connected with the anode of diode D25, the third way is connected with the cathode of diode D31, the fourth way is connected with the D1 / D2 pin of field effect transistor Q8 through bidirectional TVS patch transient suppression diode D30, the D1 / D2 pin of field effect transistor Q8 drives the second motor, and is connected with the anode of diode D26 and the cathode of diode D32 simultaneously, the cathode of diode D25 and the cathode of diode D26 are connected with DC 8-24V power supply, the anode of diode D31 and the anode of diode D32 are grounded, the G1 pin of field effect transistor Q7 is connected with the 6th pin of tube power driver U16 through parallel resistance R104 and stabilizing diode D38, the G1 pin of field effect transistor Q8 is connected with the 8th pin of tube power driver U16 through parallel resistance R105 and stabilizing diode D39.

5. A shared charging access cabinet control system as claimed in claim 4, wherein: The motor overcurrent protection circuit (10) includes operational amplifiers U27.1 and U27.2 of model LTC8842XS8 / R8, the inverting input end of the operational amplifier U27.1 is divided into two paths, one path is connected to ground through a 1kΩ resistor, and the other path is connected to the output end of the operational amplifier U27.1 through a parallel capacitor C73 and a 1001kΩ resistor, the noninverting input end of the operational amplifier U27.1 is divided into two paths, one path is connected to the S1 pin of the field effect transistor Q7, the S1 pin of the field effect transistor Q8 and one end of the resistor R103 through a 1kΩ resistor, and the other path is connected to ground through a parallel 1kΩ resistor and capacitor C74; the other end of the resistor R103 is connected to the anode of the diode D32, the output end of the operational amplifier U27.1 is connected to the noninverting input end of the operational amplifier U27.2 through a resistor R98, the inverting input end of the operational amplifier U27.2 is divided into two paths, one path is connected to ground through a resistor R95, and the other path is connected to +3.3V voltage through a slide resistor R90, the output end of the operational amplifier U27.2 is connected to the first pin of the optocoupler isolator EL357N-GU20 through a resistor R109, the second and third pins of the optocoupler isolator EL357N-GU20 are connected to ground, the fourth pin of the optocoupler isolator EL357N-GU20 is divided into two paths, one path is connected to +3.3V voltage through a resistor R111, and the other path is connected to the 43th pin of the STM32F407VGT6 master control chip.

6. A shared charging access cabinet control system according to claim 1, wherein: The main controller (1) is also connected with a communication module (11), the communication module (11) includes a CAN bus communication module, an RS485 serial communication module, a TTL communication module, a Bluetooth module, a WIFI module and a 4G communication module.

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