Multifunctional intelligent power distribution box

Abstract

The utility model discloses a multifunctional intelligent power distribution box, including shell and setting in the system control board and power distribution drive board of shell, main control module is singlechip, embedded microprocessor, system control board and power distribution drive board realize signal and power connection through the connector of plug -in type, and the function integration degree is high, and the power management, main control logic, current / voltage acquisition and CAN communication function are integrated in single shell, reduce external module dependence, and communication ability is strong, adopts CAN bus communication, supports multi -node networking, and the anti -interference ability is strong, is suitable for industrial field, and the monitoring precision is high, and AD acquisition module supports multichannel high -speed sampling, can real -time reflection output voltage, current state, and the protection function is perfect, possesses overvoltage, overcurrent, short circuit etc. Multiple protection, improve the safety of electricity and equipment reliability, modular design, control board and drive board separate, plug -in type connection, convenient extension and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of power distribution technology, specifically a multifunctional intelligent power distribution box. Background Technology

[0002] With the development of industrial automation, intelligent manufacturing and smart energy systems, power distribution equipment not only needs to perform traditional power distribution functions, but also needs to have real-time monitoring of electrical parameters, fault protection and communication capabilities.

[0003] In existing technologies, most existing power distribution boxes only possess basic power distribution functions, lacking the ability to collect and record output current and voltage in real time. Furthermore, when communicating with external control systems, they often rely on simple serial ports or relay signals, resulting in low communication efficiency, poor anti-interference capabilities, and unsuitability for multi-node, long-distance data exchange needs. In addition, existing power distribution devices generally lack modularity in their structural design, with low integration between control and drive units, complex installation and wiring, and inconvenient maintenance and replacement. Regarding safety protection, their response to abnormal conditions such as overvoltage, overcurrent, and short circuits is slow, easily leading to equipment damage or shutdown, affecting system stability and safety. Therefore, it is necessary to design a multi-functional intelligent power distribution box with a compact structure, high functional integration, capable of both power distribution and real-time acquisition of electrical parameters and interaction with external systems through a high-reliability communication interface, while also possessing comprehensive protection functions, to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a multifunctional intelligent power distribution box to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional intelligent power distribution box, comprising a shell and a system control board and a power distribution drive board disposed within the shell; the shell is made of metal material and has a dustproof and waterproof structure; the shell is provided with an input positive terminal, an input negative terminal, a power distribution box nameplate, a CAN communication terminal, an output terminal one, and an output terminal two; the system control board includes a power module, a main control module, an AD acquisition module, and a CAN communication module; the power distribution drive board includes a power output circuit and a current acquisition circuit; wherein, the power module supplies power to the system control board and the power distribution drive board, the main control module receives output signals and performs logic control, the AD acquisition module acquires voltage and current signals of the power distribution output, the CAN communication module enables data communication with external devices, the power output circuit supplies power to external loads, the current acquisition circuit monitors the output current in real time, the main control module is a microcontroller or embedded microprocessor, and the system control board and the power distribution drive board are connected by a plug-in connector for signal and power connection.

[0006] Based on the preferred embodiment of this technical solution, the power supply module is divided into a digital power supply circuit and an analog power supply circuit. The positive input voltage of the digital power supply circuit is connected through a fuse F1, and then connected in sequence to diode D1, resistor R1, capacitors C2 and C5, and inductor L1 for rectification and filtering. The output 5V voltage regulator circuit is connected to the isolated DC-DC chip U3, and the voltage circuit is connected to capacitors C3 and C6 for voltage regulation. The output voltage regulator circuit is connected to chip U1 to output a 3.3V voltage. The input voltage of the analog power supply circuit is connected to chip U7, and the output 5V voltage is connected to chip U6 to output an analog voltage of 3.3V.

[0007] According to the preferred embodiment of this technical solution, the AD acquisition module circuit connection includes: the pins PA1, PA3, PA5, PA6, and PA7 of the main control module are connected to the chip U12 through resistors R72, R55, R63, R69, and R66, and the pins AIN0-AIN15 of the chip U12 are respectively connected to 22R resistors, thus forming the AD acquisition module circuit.

[0008] Based on the preferred embodiment of this technical solution, the CAN communication module supports the CAN2.0B protocol, and the circuit connection includes: pins PB8 and PB9 of the main control module are connected to the CANR and CANT pins of chip U2; resistor R2 is connected between the external CAN signals CAN1H and CAN1L; CAN1H is connected to the CANH pin of chip U2; and CAN1L is connected to the CANL pin of chip U2, thus forming the CAN communication interface circuit.

[0009] Based on the preferred embodiment of this technical solution, the power output circuit includes: a main control module control signal circuit connected to resistor R7, resistor R7 connected to pin 1 of optocoupler isolation chip U3, pin 2 of chip U3 grounded, pin 4 of chip U3 connected to pin 1 of MOSFET U1 through resistor R6, pin 3 of MOSFET U1 connected to a 24V DC power supply, controlling pin 3 of MOSFET U1 to output a 24V voltage, and several such power output circuits are provided.

[0010] In a preferred embodiment of this technical solution, the current acquisition circuit includes: pin 2 of MOSFET U1 is connected to pins 1 and 2 of chip U2, and feedback current is output through pin 7 of chip U2. Pin 7 of chip U2 is connected to pin 1 of transistor Q2 through resistors R9 and R13. Pin 2 of transistor Q2 is grounded. Pin 3 of transistor Q2 is connected to pin 1 of DZ1 through resistor R8. Pin 2 of DZ1 is connected to pins 1 and 2 of chip U2 through resistor R3 to form an overcurrent protection circuit. Several such current acquisition circuits are provided.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] It features high functional integration, integrating power management, main control logic, current / voltage acquisition, and CAN communication functions within a single enclosure, reducing reliance on external modules.

[0013] It has strong communication capabilities, adopts CAN bus communication, supports multi-node networking, has strong anti-interference capabilities, and is suitable for industrial sites.

[0014] With high monitoring accuracy, the AD acquisition module supports multi-channel high-speed sampling and can reflect the output voltage and current status in real time.

[0015] With comprehensive protection functions, including overvoltage, overcurrent, and short circuit protection, it enhances electrical safety and equipment reliability.

[0016] The modular design separates the control board and the driver board, with plug-in connection for easy expansion and maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is the overall architecture diagram of this utility model;

[0020] Figure 4 This is the circuit schematic diagram of the power module of this utility model;

[0021] Figure 5 This is the circuit schematic diagram of the AD acquisition module of this utility model;

[0022] Figure 6 This is a circuit schematic diagram of the CAN communication module of this utility model;

[0023] Figure 7 This is the circuit diagram of the power distribution drive board of this utility model.

[0024] In the diagram: 1. Outer casing; 2. Power distribution box nameplate; 3. CAN communication terminal; 4. Output terminal one; 5. Output terminal two; 6. Input positive terminal; 7. Input negative terminal; 8. System control board; 9. Power distribution drive board; 801. Power module; 802. Main control module; 803. AD acquisition module; 804. CAN communication module; 8011. Digital power supply circuit; 8012. Analog power supply circuit; 901. Power output circuit; 902. Current acquisition circuit. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-7 This utility model provides an embodiment: a multifunctional intelligent power distribution box, including a housing 1 and a system control board 8 and a power distribution drive board 9 disposed within the housing 1; the housing 1 is made of metal material and has a dustproof and waterproof structure, and the housing 1 is provided with an input positive terminal 6, an input negative terminal 7, a power distribution box nameplate 2, a CAN communication terminal 3, an output terminal 1 4, and an output terminal 2 5; the system control board 8 includes a power module 801, a main control module 802, an AD acquisition module 803, and a CAN communication module 804; The power distribution drive board 9 includes a power output circuit 901 and a current acquisition circuit 902. The power module 801 supplies power to the system control board 8 and the power distribution drive board 9. The main control module 802 receives output signals and performs logic control. The AD acquisition module 803 acquires the voltage and current signals of the power distribution output. The CAN communication module 804 enables data communication with external devices. The power output circuit 901 supplies power to external loads. The current acquisition circuit 902 monitors the output current in real time. The main control module 802 is a single-chip microcontroller. The system control board 8 and the power distribution drive board 9 are connected via plug-in connectors to achieve signal and power supply. This utility model integrates a power module 801, a main control module 802, an AD acquisition module 803, a CAN communication module 804, a power output circuit 901, and a current acquisition circuit 902. It can realize multiple functions such as power distribution, real-time monitoring of operating parameters, communication, and safety protection. Compared with traditional single-function distribution boxes, this utility model has the advantages of high integration, compact structure, and comprehensive functions. It can monitor voltage and current status in real time through the AD acquisition module 803 and the current acquisition circuit 902, and can also realize data interaction with external devices through the CAN communication module 804, thereby facilitating remote monitoring and intelligent management. At the same time, the main control module 802 can quickly respond to abnormal currents and provide overcurrent, short circuit and other protection functions, which significantly improves the safety and reliability of the system. In addition, the device adopts a modular design, has good expandability and compatibility, and the outer shell 1 has reserved multiple input and output ports for convenient user installation and use, which improves the intelligence level and application value of the power distribution system as a whole.

[0027] Please see Figure 1 and Figure 4A further solution based on this embodiment is as follows: The power module 801 is divided into a digital power circuit 8011 and an analog power circuit 8012. The positive input voltage of the digital power circuit 8011 is connected through a fuse F1, and then connected in sequence to diode D1, resistor R1, capacitors C2 and C5, and inductor L1 for rectification and filtering. The output 5V voltage regulator circuit is connected to the isolated DC-DC chip U3, and the voltage circuit is connected to capacitors C3 and C6 for voltage regulation. The output voltage regulator circuit is connected to chip U1 to output a 3.3V voltage; the analog power circuit 8012 is further divided into a digital power circuit 8011 and an analog power circuit 8012. The power supply circuit 8012 has its input voltage connected to chip U7 and its output 5V voltage connected to chip U6, outputting an analog voltage of 3.3V. The digital power supply circuit 8011 uses an isolated DC-DC converter URB4805YMD-10WR3 to convert the input 24V DC voltage into a stable 5V output. The analog power supply circuit 8012 uses a low-noise linear regulator chip AMS1117-3.3 to output 3.3V, providing power to the main control module 802, the AD acquisition module 803, and the CAN communication module 804.

[0028] Please see Figure 5 A further solution based on this embodiment is as follows: the circuit connection of the AD acquisition module 803 includes: the pins PA1, PA3, PA5, PA6, and PA7 of the main control module 802 are connected to the chip U12 through resistors R72, R55, R63, R69, and R66, and the pins AIN0-AIN15 of the chip U12 are respectively connected to 22R resistors to form the AD acquisition module 803 circuit.

[0029] Please see Figure 3 and Figure 6 A further solution based on this embodiment is as follows: The CAN communication module 804 supports the CAN2.0B protocol. The circuit connection includes: pins PB8 and PB9 of the main control module 802 are connected to the CANR and CANT pins of the chip U2; a resistor R2 is connected between the external CAN signals CAN1H and CAN1L; CAN1H is connected to the CANH pin of the chip U2; and CAN1L is connected to the CANL pin of the chip U2, forming a CAN communication interface circuit. The main control module 802 uses a GigaDevice 32-bit microcontroller GD32F105RCT6 with a 108MHz main frequency, LQFP64 package, on-chip FLASH capacity of 256KB, and on-chip SRAM capacity of 96KB; it supports JTAG emulator and serial port download.

[0030] Please see Figure 7A further solution based on this embodiment is as follows: The power output circuit 901 includes: the main control module 802 control signal circuit is connected to resistor R7, resistor R7 is connected to pin 1 of optocoupler isolation chip U3, pin 2 of chip U3 is grounded, pin 4 of chip U3 is connected to pin 1 of MOSFET U1 through resistor R6, pin 3 of MOSFET U1 is connected to 24V DC power supply, and the MOSFET U1 pin 3 is controlled to output 24V voltage. Similarly, several power output circuits are provided.

[0031] Please see Figure 7 A further solution based on this embodiment is as follows: The current acquisition circuit 902 includes: pin 2 of MOS transistor U1 is connected to pins 1 and 2 of chip U2, and feedback current is output through pin 7 of chip U2. Pin 7 of chip U2 is connected to pin 1 of transistor Q2 through resistors R9 and R13. Pin 2 of transistor Q2 is grounded. Pin 3 of transistor Q2 is connected to pin 1 of DZ1 through resistor R8. Pin 2 of DZ1 is connected to pins 1 and 2 of chip U2 through resistor R3 to form an overcurrent protection circuit. Similarly, several current acquisition circuits 902 are provided.

[0032] Working principle: When an external DC power supply of 24V is connected through the positive input terminal 6 and the negative input terminal 7, the power module 801 starts up and converts the input voltage to 5V and 3.3V to power the system control board 8 and the power distribution drive board 9.

[0033] Specifically, after the main control module 802 is powered on, it first executes a self-test program to check the connection status of each output channel and whether the voltage and current are within the normal range, and then sends the test results to the host computer through the CAN communication module 804.

[0034] Specifically, upon receiving a control command from the host computer, the main control module 802 drives the corresponding optocoupler isolation circuit according to the command, turning on the MOSFET, thereby distributing electrical energy from the input terminal to the designated output terminal 4 or output terminal 5. During the power supply process, the AD acquisition module 803 continuously acquires the voltage and current of the circuit and returns the data to the main control module 802.

[0035] Specifically, when an overcurrent, short circuit, or undervoltage condition is detected, the main control module 802 will immediately shut down the MOSFET of that channel and send the fault information to the host computer via the CAN communication module 804. At the same time, it will save the abnormal data in the fault log table for subsequent maintenance.

[0036] Specifically, under normal operating conditions, the system broadcasts the operating status, real-time current, voltage, and other information of each channel to the host computer via the CAN bus every 500ms, enabling remote monitoring and data recording.

[0037] This utility model provides a multifunctional intelligent power distribution box that integrates a power module 801, a main control module 802, an AD acquisition module 803, a CAN communication module 804, a power output circuit 901, and a current acquisition circuit 902. It can realize multiple functions such as power distribution, real-time monitoring of operating parameters, communication, and safety protection. Compared with traditional single-function power distribution boxes, this utility model has the advantages of high integration, compact structure, and comprehensive functions. It can monitor voltage and current status in real time through the AD acquisition module 803 and the current acquisition circuit 902, and can also achieve data interaction with external devices through the CAN communication module 804, thus facilitating remote monitoring and intelligent management. Simultaneously, the main control module 802 can quickly respond to abnormal currents and provide overcurrent and short-circuit protection functions, significantly improving the safety and reliability of the system. Furthermore, the device adopts a modular design, possessing good expandability and compatibility. Multiple input / output ports are reserved on the outer casing 1 for convenient user installation and use, overall improving the intelligence level and application value of the power distribution system.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional intelligent power distribution box, characterized in that: The system includes a housing (1) and a system control board (8) and a power distribution drive board (9) housed within the housing (1). The housing (1) is made of metal and has a dustproof and waterproof structure. The housing (1) is provided with an input positive terminal (6), an input negative terminal (7), a power distribution box nameplate (2), a CAN communication terminal (3), an output terminal one (4), and an output terminal two (5). The system control board (8) includes a power module (801), a main control module (802), an AD acquisition module (803), and a CAN communication module (804). The power distribution drive board (9) includes a power output circuit (901) and a current acquisition circuit (904). 2); wherein, the power module (801) is used to supply power to the system control board (8) and the power distribution drive board (9), the main control module (802) is used to receive output signals and perform logic control, the AD acquisition module (803) is used to acquire voltage and current signals of the power distribution output, the CAN communication module (804) is used to realize data communication with external devices, the power output circuit (901) is used to supply power to external loads, the current acquisition circuit (902) is used to monitor the output current in real time, the main control module (802) is a single-chip microcomputer or embedded microprocessor, and the system control board (8) and the power distribution drive board (9) are connected to the signal and power supply through a plug-in connector.

2. The multifunctional intelligent power distribution box according to claim 1, characterized in that: The power module (801) is divided into a digital power circuit (8011) and an analog power circuit (8012). The input positive voltage of the digital power circuit (8011) is connected through a fuse F1, and then connected in sequence to diode D1, resistor R1, capacitors C2 and C5, and inductor L1 for rectification and filtering. The output 5V voltage regulator circuit is connected to the isolated DC-DC chip U3, and the voltage circuit is connected to capacitors C3 and C6 for voltage regulation. The output voltage regulator circuit is connected to chip U1 to output a 3.3V voltage. The input voltage of the analog power circuit (8012) is connected to chip U7, and the output 5V voltage is connected to chip U6 to output an analog voltage of 3.3V.

3. The multifunctional intelligent power distribution box according to claim 2, characterized in that: The AD acquisition module (803) circuit connection includes: the pins PA1, PA3, PA5, PA6, and PA7 of the main control module (802) are connected to the chip U12 through resistors R72, R55, R63, R69, and R66, and the pins AIN0-AIN15 of the chip U12 are connected to 22R resistors respectively, forming the AD acquisition module (803) circuit.

4. The multifunctional intelligent power distribution box according to claim 3, characterized in that: The CAN communication module (804) supports the CAN2.0B protocol. The circuit connection includes: pins PB8 and PB9 of the main control module (802) are connected to the CANR and CANT pins of the chip U2; resistor R2 is connected between the external CAN signals CAN1H and CAN1L; CAN1H is connected to the CANH pin of the chip U2; and CAN1L is connected to the CANL pin of the chip U2, thus forming the CAN communication interface circuit.

5. The multifunctional intelligent power distribution box according to claim 4, characterized in that: The power output circuit (901) includes: a main control module (802) control signal circuit connected to resistor R7, resistor R7 connected to pin 1 of optocoupler isolation chip U3, pin 2 of chip U3 grounded, pin 4 of chip U3 connected to pin 1 of MOSFET U1 through resistor R6, pin 3 of MOSFET U1 connected to 24V DC power supply, controlling pin 3 of MOSFET U1 to output 24V voltage, and several power output circuits are provided.

6. The multifunctional intelligent power distribution box according to claim 5, characterized in that: The current acquisition circuit (902) includes: pin 2 of MOS transistor U1 is connected to pins 1 and 2 of chip U2, and feedback current is output through pin 7 of chip U2. Pin 7 of chip U2 is connected to pin 1 of transistor Q2 through resistors R9 and R13. Pin 2 of transistor Q2 is grounded. Pin 3 of transistor Q2 is connected to pin 1 of DZ1 through resistor R8. Pin 2 of DZ1 is connected to pins 1 and 2 of chip U2 through resistor R3 to form an overcurrent protection circuit. Several of the same current acquisition circuits (902) are provided.

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