Multi-channel direct-current power supply distribution module
By designing a multi-channel DC power distribution module, the problem of interference between DC power supplies is solved, enabling precise power control of industrial equipment and ensuring uninterrupted operation.
Patent Information
- Application Number
- CN202422513665.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-10-17
AI Technical Summary
There is mutual interference between different DC power supplies, and the power requirements of industrial equipment cannot be met.
A multi-channel DC power distribution module, including a control branch and a power supply branch, is adopted. Through input isolation circuit, power conversion circuit and rectifier filter circuit, combined with microcontroller and drive circuit, the isolation of DC power supply and precise control of power demand are realized.
It effectively isolates interference between different DC power supplies, ensuring that the power requirements of each industrial device are met and that the equipment continues to operate normally.
Smart Images
Figure CN223713589U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of power distribution, and in particular to a multi-channel DC power distribution module. BACKGROUND
[0002] DC power supply is a common and essential power supply in industrial equipment. The DC power supply supplies the industrial equipment with the rectified and filtered AC power or the voltage-regulated DC power, so that the industrial equipment can be normally started and worked. Since the industrial equipment usually requires uninterrupted work, but the power supply may be interrupted, at least two DC power supplies need to be connected to the industrial equipment at the same time, so that the industrial equipment can be quickly switched to other DC power supply when one DC power supply is interrupted, to ensure that the industrial equipment can continuously work normally. Moreover, there are a large number of industrial equipment, which are usually installed in an area, so that multiple industrial equipment need to be connected to the load end of the DC power supply at the same time, which forms a multi-channel connection, i.e. a multiple-input and multiple-output connection.
[0003] After multiple DC power supplies are connected to the industrial equipment, since the conditions of the DC power supplies are different, if the multiple DC power supplies are directly connected to the industrial equipment, there is a possibility of mutual interference between different DC power supplies. Meanwhile, the power requirements of each industrial equipment are different, and the output capabilities of different DC power supplies may not be able to meet the requirements of each industrial equipment. CONTENT OF THE INVENTION
[0004] The embodiment of the present application provides a multi-channel DC power distribution module, to solve the problems that there is interference between different DC power supplies in the prior art, and the power requirements of the industrial equipment cannot be met.
[0005] The embodiment of the present application provides a multi-channel DC power distribution module, which comprises a control branch and multiple power supply branches. Each power supply branch comprises an input isolation circuit, a power conversion circuit and a rectification and filtering circuit connected in sequence. The input end of the input isolation circuit is used for connecting a DC power supply. The output end of the rectification and filtering circuit is used for connecting an industrial equipment. The control branch comprises a single-chip microcomputer, an output isolation optocoupler and a driving circuit connected in sequence. The output end of the driving circuit is connected with the control end of each power conversion circuit. The single-chip microcomputer generates a corresponding power control instruction after receiving power requirement data input by a user. The power control instruction is transmitted to the driving circuit through the output isolation optocoupler. The driving circuit controls the output voltage and output current of the corresponding power conversion circuit under the driving of the power control instruction, to meet the power requirements of the industrial equipment.
[0006] In a possible implementation manner, a filter circuit is further connected between the input isolation circuit and the power conversion circuit.
[0007] In a possible implementation, the model of the output isolation optocoupler is PC4D10, the driving circuit includes a driving chip U2, the model of the driving chip U2 is IR2110, the power conversion circuit includes a transistor Q1 and a transistor Q2, the pin 1 and the pin 4 of the output isolation optocoupler input the power control instruction output by the single-chip microcomputer, the pin 7, the pin 6 and the pin 5 of the output isolation optocoupler are connected with the pin 12, the pin 14 and the pin 15 of the driving chip U2 respectively, the pin 8 and the pin 1 of the driving chip U2 are connected with the gate of the transistor Q1 and the gate of the transistor Q2 respectively, the source of the transistor Q1 and the drain of the transistor Q2 are connected, the drain of the transistor Q1 is connected with the positive pole of the direct-current power supply input through the input isolation circuit, and the source of the transistor Q1 is connected at one end of the primary coil T1 of the transformer, and the negative pole of the direct-current power supply input through the input isolation circuit is connected at the other end of the primary coil T1.
[0008] In a possible implementation, the rectification filter circuit includes a diode D3, a diode D4, an inductor L1 and an inductor L2, the positive pole of the diode D3 and the positive pole of the diode D4 are connected and grounded, the negative poles of the diode D3 and the diode D4 are connected at two ends of the secondary coil T2 of the transformer respectively, one end of the inductor L1 and one end of the inductor L2 are connected with the negative pole of the diode D3 and the negative pole of the diode D4 respectively, and the other end of the inductor L1 and the other end of the inductor L2 are connected together and used for connecting with the industrial equipment.
[0009] In a possible implementation, the model of the single-chip microcomputer is STM32F103C8T6, the pins 11-16 of the single-chip microcomputer are connected with the first six-position DIP switch, the pins 29-34 of the single-chip microcomputer are connected with the second six-position DIP switch, and the pins 45-46, 21-22 and 25-26 of the single-chip microcomputer are connected with the third six-position DIP switch, and the first DIP switch, the second DIP switch and the third DIP switch are used for inputting the power demand data of the industrial equipment in the channel 1, the channel 2 and the channel 3 respectively.
[0010] In a possible implementation, the input isolation circuit includes two diodes, the positive pole of one diode is used for connecting with the positive pole of the direct-current power supply, and the negative pole is used as the positive pole of the input power conversion circuit, the negative pole of the other diode is used for connecting with the negative pole of the direct-current power supply, and the positive pole is used as the negative pole of the input power conversion circuit.
[0011] The multi-channel direct-current power supply distribution module in the application has the following advantages:
[0012] The input isolation circuit is arranged at the access end of the direct-current power supply to isolate the interference between different direct-current power supplies in the same channel, the single-chip microcomputer and the driving circuit are arranged in the control branch to control the output power of each channel under the power demand data input by the user, and the power demand of different industrial equipment is met. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0014] Figure 1 A functional module diagram of a multi-channel DC power supply distribution module provided by the embodiment of the present application.
[0015] Figure 2 A connection diagram of a filter circuit, a power conversion circuit, a driving circuit and an output isolation optocoupler provided by the embodiment of the present application.
[0016] Figure 3 A circuit diagram of a rectifier filter circuit provided by the embodiment of the present application.
[0017] Figure 4 A circuit diagram of a single-chip microcomputer provided by the embodiment of the present application. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0019] Figure 1 A functional module diagram of a multi-channel DC power supply distribution module provided by the embodiment of the present application. The embodiment of the present application provides a multi-channel DC power supply distribution module, which comprises a control branch and a plurality of power supply branches. Each power supply branch comprises an input isolation circuit, a power conversion circuit and a rectifier filter circuit connected in sequence. The input end of the input isolation circuit is used to connect a DC power supply. The output end of the rectifier filter circuit is used to connect an industrial device. The control branch comprises a single-chip microcomputer, an output isolation optocoupler and a driving circuit connected in sequence. The output end of the driving circuit is connected with the control end of each power conversion circuit respectively. After the single-chip microcomputer receives power demand data input by a user, the single-chip microcomputer generates corresponding power control instructions. The power control instructions are transmitted to the driving circuit through the output isolation optocoupler. The driving circuit controls the output voltage and the output current of the corresponding power conversion circuit under the driving of the power control instructions, so as to meet the power demand of the industrial device.
[0020] Exemplarily, the distribution module in the embodiment of the present application has three channels, which are channel 1, channel 2 and channel 3 respectively. Each channel is the output end of one power supply branch, and therefore contains three power supply branches. Each power supply branch is connected to two direct current power supplies, and therefore three power supply branches need to be connected to six direct current power supplies. Each power supply branch contains two input isolation circuits. The input end of each input isolation circuit is used to connect one direct current power supply, and the output end of the two input isolation circuits is connected to the power conversion circuit.
[0021] As shown in Figures 2-4 , a filter circuit is further connected between the input isolation circuit and the power conversion circuit. The filter circuit is a capacitor C1. The power supply input by the direct current power supply is filtered by the capacitor C1 and then input to the power conversion circuit. In the power conversion circuit, the voltage and current of the power supply are adjusted according to the power demand data input by the user, so as to meet the power demand of the industrial equipment.
[0022] Further, the input isolation circuit contains two diodes. The anode of one diode is used to connect the anode of the direct current power supply, and the cathode is used as the anode of the input power conversion circuit. The cathode of the other diode is used to connect the cathode of the direct current power supply, and the anode is used as the cathode of the input power conversion circuit.
[0023] After the input isolation circuit composed of diodes is adopted, the two direct current power supplies in the same channel will not interfere with each other even if they are connected to the same filter circuit.
[0024] Further, the model of the output isolation optocoupler is PC4D10, the driving circuit includes a driving chip U2, the model of the driving chip U2 is IR2110, the power conversion circuit contains a triode Q1 and a triode Q2, the pin 1 and the pin 4 of the output isolation optocoupler input the power control instruction output by the single-chip microcomputer, the pin 7, the pin 6 and the pin 5 of the output isolation optocoupler are connected to the pin 12, the pin 14 and the pin 15 of the driving chip U2 respectively, the pin 8 and the pin 1 of the driving chip U2 are connected to the gate of the triode Q1 and the gate of the triode Q2 respectively, the source of the triode Q1 and the drain of the triode Q2 are connected, the drain of the triode Q1 is connected to the anode of the direct current power supply input through the input isolation circuit, the source of the triode Q1 is connected to one end of the primary coil T1 of the transformer, and the cathode of the direct current power supply input through the input isolation circuit is connected to the other end of the primary coil T1.
[0025] Specifically, the output isolation optocoupler uses isolation chip U1 to represent, its input end input single-chip microcomputer output PWM (Pulse Wide Modulation, pulse width modulation) signal as power control instruction, pin 8 access +5V power supply. The power control instruction is transmitted after the isolation of the output isolation optocoupler, and is input to the drive chip U2. The pin 11 of the drive chip U2 is connected to the +12V power supply. There are also parallel resistors R1 and diodes D1 connected between the drive chip U2 and the gate of the transistor Q1. The positive electrode of the diode D1 is connected to the gate of the transistor Q1, and the gate and source of the transistor Q1 are connected through the resistor R2. At the same time, the source of the transistor Q1 is also connected to the pin 6 of the drive chip U2. There are also parallel resistors R3 and diodes D2 connected between the drive chip U2 and the gate of the transistor Q2. The positive electrode of the diode D2 is connected to the gate of the transistor Q2, and the gate and source of the transistor Q2 are connected through the resistor R4.
[0026] The positive electrode of the power supply filtered by the capacitor C1 is connected to the drain of the transistor Q1, and the negative electrode is connected to the primary coil T1 through the capacitor C2. At the same time, the capacitor C2 is also connected to the source of the transistor Q2 through the capacitor C3.
[0027] The drive chip U2 drives the transistors Q1 and Q2 to alternate conduction under the control of the power control instruction, so as to convert the direct current filtered by the capacitor C1 into alternating current, and finally transmit the converted alternating current to the rectifier filter circuit through the transformer to achieve the purpose of voltage reduction.
[0028] Further, the rectifier filter circuit includes diodes D3, D4, inductors L1 and L2. The positive electrode of the diode D3 and the positive electrode of the diode D4 are connected, and also grounded. The negative electrodes of the diodes D3 and D4 are connected to the two ends of the secondary coil T2 of the transformer, respectively. One end of the inductors L1 and L2 is connected to the negative electrode of the diode D3 and the negative electrode of the diode D4, respectively. The other end of the inductors L1 and L2 is connected together, and is also used to connect with the industrial equipment.
[0029] Specifically, the number of turns of the secondary coil T2 is less than the number of turns of the primary coil T1, so the voltage induced by the secondary coil T2 will be lower than the voltage of the primary coil T1. The induced alternating current will be converted into direct current after passing through two diodes, and finally supplied to the industrial equipment.
[0030] Further, the model of the single-chip U3 is STM32F103C8T6, the pins 11-16 of the single-chip are connected with the first six-position DIP switch, the pins 29-34 of the single-chip are connected with the second six-position DIP switch, the pins 45-46, 21-22 and 25-26 of the single-chip are connected with the third six-position DIP switch, the first DIP switch, the second DIP switch and the third DIP switch are respectively used for inputting the power requirement data of the industrial equipment in the channel 1, the channel 2 and the channel 3.
[0031] Specifically, the DIP switch has a plurality of switch positions, when a certain switch position is dialled to 0, the corresponding pin of the single-chip will be grounded, thus the pin is in low level state, and the pin corresponding to the switch position dialled to 1 will be in high level, thus the DIP switch generates a binary level signal representing the power requirement data, in this simple way, the input of the power requirement data of each industrial equipment can be realized, finally the driving chip U2 adjusts the current and voltage of the power supply in each channel according to the power requirement data, thus the purpose of meeting the power requirement of the industrial equipment is achieved.
[0032] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to cover all the changes and modifications falling within the scope of the present application.
[0033] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.
Claims
1. A multi-channel DC power distribution module, characterized by, The application relates to a power supply device for industrial equipment, which comprises a control branch and a plurality of power supply branches, each of the power supply branches comprises input isolation circuit, power conversion circuit and rectification filter circuit connected in sequence, the input end of the input isolation circuit is used for connecting a direct-current power supply, the output end of the rectification filter circuit is used for connecting industrial equipment, the control branch comprises single-chip microcomputer, output isolation optocoupler and driving circuit connected in sequence, the output end of the driving circuit is connected with the control end of each power conversion circuit respectively, the single-chip microcomputer generates corresponding power control instructions after receiving power demand data input by a user, the power control instructions are transmitted to the driving circuit through the output isolation optocoupler, and the driving circuit controls the output voltage and output current of the corresponding power conversion circuit under the driving of the power control instructions, so as to meet the power demand of the industrial equipment.
2. A multi-channel DC power distribution module according to claim 1, wherein, The input isolation circuit and the power conversion circuit are further connected with a filter circuit.
3. A multi-channel DC power distribution module according to claim 1, wherein, The model of the output isolation optocoupler is PC4D10, the driving circuit comprises driving chip U2, the model of the driving chip U2 is IR2110, the power conversion circuit contains triode Q1 and triode Q2, the pin 1 and the pin 4 of the output isolation optocoupler input the power control instructions output by the single-chip microcomputer, the pin 7, the pin 6 and the pin 5 of the output isolation optocoupler are connected with the pin 12, the pin 14 and the pin 15 of the driving chip U2 respectively, the pin 8 and the pin 1 of the driving chip U2 are connected with the gate of the triode Q1 and the gate of the triode Q2 respectively, the source of the triode Q1 and the drain of the triode Q2 are connected, the drain of the triode Q1 is connected with the positive pole of the direct-current power supply input through the input isolation circuit, and the source of the triode Q1 is connected at one end of a primary coil T1 of a transformer, and the negative pole of the direct-current power supply input through the input isolation circuit is connected at the other end of the primary coil T1.
4. A multi-channel DC power distribution module according to claim 3, wherein, The rectification filter circuit contains diode D3, diode D4, inductor L1 and inductor L2, the positive pole of the diode D3 and the positive pole of the diode D4 are connected and grounded, the negative poles of the diode D3 and the diode D4 are connected at two ends of a secondary coil T2 of the transformer respectively, one end of the inductor L1 and one end of the inductor L2 are connected with the negative poles of the diode D3 and the diode D4 respectively, and the other ends of the inductor L1 and the inductor L2 are connected together and used for connecting with industrial equipment.
5. A multiple channel DC power distribution module according to claim 1, wherein, The model of the single-chip microcomputer is STM32F103C8T6, the pins 11-16 of the single-chip microcomputer are connected with six-bit first DIP switches, the pins 29-34 of the single-chip microcomputer are connected with six-bit second DIP switches, and the pins 45-46, 21-22 and 25-26 of the single-chip microcomputer are connected with six-bit third DIP switches, the first DIP switches, the second DIP switches and the third DIP switches are used for inputting the power demand data of the industrial equipment in channel 1, channel 2 and channel 3 respectively.
6. A multiple channel DC power distribution module according to claim 1, wherein, The input isolation circuit comprises two diodes, one anode of which is used for connecting the positive pole of the DC power supply, and the cathode is used as the positive pole of the input of the power conversion circuit; the other cathode is used for connecting the negative pole of the DC power supply, and the anode is used as the negative pole of the input of the power conversion circuit.