Communication management system for multi-channel power supply and multi-channel power supply

Abstract

The utility model discloses a communication management system for a multi-channel power supply and the multi-channel power supply. The communication management system comprises a master control module, a communication unit and a slave control module. The communication unit comprises an isolation communication module, the isolation communication module comprises an isolation data communication circuit and an isolation upgrade communication circuit, and the isolation data communication circuit is used for serial communication when the master control module and the slave control module carry out data electric signal interaction. And the isolation upgrading communication circuit is used for serial communication when the master control module performs software upgrading on the slave control module. The isolation upgrading communication circuit is additionally arranged in the isolation communication module of the original multi-channel power supply, so that the main control module can perform software upgrading on the slave control module through the isolation upgrading communication circuit, and a later upgrading maintenance function of the power supply output channel is added for the existing multi-channel power supply; therefore, upgrading of a multi-channel power supply is realized on the basis of ensuring minimum modification of an original circuit, and the user experience is greatly improved.

Description

Technical Field

[0001] This application relates to the field of power control technology, specifically to a communication management system for multi-channel power supplies and a multi-channel power supply. Background Technology

[0002] To power multiple loads simultaneously or a high-power load, a multi-channel power supply is needed to power each load separately, or the channels of a multi-channel power supply can be connected in series or parallel to power the high-power load. Please refer to [reference needed]. Figure 1 This is a structural block diagram of a multi-channel power supply, which includes a main control unit 1, a communication unit 2, and multiple slave control units 3. The main control unit 1 includes a main control module 11, a display module 12, an external interface module 13, and an input module 14. The input module 14 includes a button panel or touchscreen, used for setting the operating parameters of the multi-channel power supply (including setting the power output parameters of each channel) through human-computer interaction. The display module is used to display the operating status and power output parameters of the multi-channel power supply. The external interface module 13 serves as a peripheral connection interface for the multi-channel power supply. The main control module 11 is connected to each slave control unit 3 via the communication unit, and is used to set the operating electrical parameters of the power output of each slave control unit 3. The communication unit 2 includes the same number of isolated communication modules 20 as the slave control units. Each isolated communication module 20 is connected between the main control module 11 and one slave control unit 3, used for interactive communication between the main control unit 1 and the slave control units 3. The slave control unit 3 includes a slave control module 31, a power output module 32, and an electrical signal sampling module 33. The slave control module 31 is connected to both the isolation communication module 20 and the power output module 32. The slave control module 31 acquires the electrical parameters of the power output through the isolation communication module 20, and the power output module 32 outputs power based on the acquired electrical parameters. The electrical signal sampling module 33 monitors the electrical parameters of the output power from the power output module 32. The slave control module 31 also transmits the acquired electrical parameters of the output power to the main control module 11 through the isolation communication module 20, so that the electrical parameters of the power output from each slave control unit can be displayed through the display module 12.

[0003] The communication management system for a multi-channel power supply involves a main control module 11, a communication unit 2, and a slave control module 31 to achieve data communication between the main control unit 1 and the slave control unit 3. In existing technology, both the main control module 11 and the slave control module 31 of a multi-channel power supply implement their respective functions through an MCU. Due to the isolation and floating ground requirements of the communication management system for multi-channel power supplies, the isolation communication module 20 generally uses an isolation optocoupler control mode. The main MCU (main control module 11) controls each slave MCU (slave control module 31) using a polling mechanism. The main MCU and slave MCUs use one-to-one or one-to-many serial communication, and the multiple slave MCUs need to be independent of each other. With this communication management system, the control software of the slave control unit 31 is only programmed once and cannot be upgraded with subsequent upgrades of the main control unit 1. If the slave control unit 3 has bugs or needs additional functions, it must be returned to the factory for maintenance. Therefore, the existing communication management system needs to be upgraded to have design capabilities to meet user needs. Utility Model Content

[0004] The technical problem this application aims to solve is how to upgrade and transform the communication management system of a multi-channel power supply so as to add subsequent upgrade and maintenance functions from the control unit.

[0005] According to the first aspect, one embodiment provides a communication management system for a multi-channel power supply, used to realize isolated communication between the master control unit and the slave control unit of the multi-channel power supply, including a master control module, a communication unit and a slave control module;

[0006] The communication unit includes at least one isolated communication module; the isolated communication module includes an isolated data communication circuit and an isolated upgrade communication circuit, the isolated data communication circuit is connected between the main control module and the slave control module, and is used for serial communication when the main control module and the slave control module perform data electrical signal interaction; wherein, the data electrical signal includes electrical parameter information of the output power of each power output channel in the multi-channel power supply that is set and / or monitored and acquired;

[0007] The isolation upgrade communication circuit is connected between the main control module and the slave control module, and is used for serial communication when the main control module performs software upgrades on the slave control module.

[0008] The isolated data communication circuit and the isolated upgrade communication circuit are both general asynchronous transceivers using optocoupler isolation technology.

[0009] In one embodiment, the isolated data communication circuit includes a first multi-channel digital isolation chip U1, and the isolated upgrade communication circuit includes a second multi-channel digital isolation chip U2; the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are used as a four-channel digital isolator; the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 respectively include a first connection terminal VCC1, a second connection terminal GND1, a third connection terminal INA, a fourth connection terminal INB, a fifth connection terminal INC, a sixth connection terminal OUTD, a seventh connection terminal EN1, an eighth connection terminal GND2, a ninth connection terminal GND3, a tenth connection terminal EN2, an eleventh connection terminal IND, a twelfth connection terminal OUTC, a thirteenth connection terminal OUTB, a fourteenth connection terminal OUTA, a fifteenth connection terminal GND4, and a sixteenth connection terminal VCC2.

[0010] In one embodiment, the third connection terminal INA, the fourth connection terminal INB, the fifth connection terminal INC, and the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are connected to the main control module, and the eleventh connection terminal IND, the twelfth connection terminal OUTC, the thirteenth connection terminal OUTB, and the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are electrically connected to the slave control module.

[0011] Specifically, a first diode D1 is connected in series between the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1 and the main control module. The positive terminal of the first diode D1 is connected to the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1, and the negative terminal of the first diode D1 is connected to the main control module. A second diode D2 is connected in series between the sixth connection terminal OUTD of the second multi-channel digital isolation chip U2 and the main control module. The positive terminal of the second diode D2 is connected to the sixth connection terminal OUTD of the second multi-channel digital isolation chip U2, and the negative terminal of the second diode D2 is connected to the main control module. A third diode D3 is connected in series between the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1 and the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2. The positive terminal of the third diode D3 is connected to the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2, and the negative terminal of the third diode D3 is connected to the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1.

[0012] In one embodiment, the isolated communication module further includes a first resistor R1, one end of which is connected to the negative terminal of a first diode D1, and the other end is grounded.

[0013] In one embodiment, the isolated communication module further includes a second resistor R2, one end of which is connected to the negative terminal of the second diode D2, and the other end is grounded.

[0014] In one embodiment, the isolation upgrade communication circuit further includes a third resistor R3 and a fourth resistor R4; the third resistor R3 is connected in series between the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2 and the slave control module, one end of the fourth resistor R4 is connected to the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2, and the other end is used to input a preset voltage signal.

[0015] In one embodiment, the communication management system includes at least two slave control modules, and the communication unit includes the same number of isolated communication modules as the slave control modules; each isolated communication module is connected to one slave control module.

[0016] The cathode of the first diode D1 in each of the isolated data communication circuits is electrically connected, and the cathode of the second diode D2 in each of the isolated upgrade communication circuits 22 is electrically connected; the fourth connection terminal INB of each of the first multi-channel digital isolation chips U1 is electrically connected, the fifth connection terminal INC of each of the first multi-channel digital isolation chips U1 is electrically connected, and the fifth connection terminal INC of each of the second multi-channel digital isolation chips U2 is electrically connected.

[0017] In one embodiment, the main control module and the slave control module each include an STM32 chip circuit.

[0018] According to a second aspect, one embodiment provides a multi-channel power supply, including the communication management system as described in the first aspect.

[0019] In one embodiment, the multi-channel power supply further includes an output control module, which is connected to the main control module and each slave control unit of the multi-channel power supply. Each slave control unit is used as a power output channel of the multi-channel power supply. The output control module is used to respond to a preset output control electrical signal output by the main control module, and to connect the power signals output by at least two slave control units in series or in parallel as the output power of the multi-channel power supply.

[0020] According to the communication management system of the above embodiment, since an isolation upgrade communication circuit is added to the original multi-channel power supply isolation communication module, the main control module can upgrade the slave control module through the isolation upgrade communication circuit, and add the power output channel upgrade and maintenance function to the existing multi-channel power supply, so as to ensure that the upgrade of the multi-channel power supply is achieved with minimal modification to the original circuit, thereby improving the user experience. Attached Figure Description

[0021] Figure 1 This is a block diagram of a multi-channel power supply.

[0022] Figure 2 This is a schematic diagram of the structural connections of the isolated communication module;

[0023] Figure 3 A schematic diagram of the serial communication circuit for the isolation communication module;

[0024] Figure 4 This is a structural block diagram of a communication management system in one embodiment;

[0025] Figure 5 This is a schematic diagram of the circuit connection of the isolated communication module in one embodiment;

[0026] Figure 6 This is a circuit connection diagram of a communication management system in one embodiment;

[0027] Figure 7 This is a schematic diagram of the electrical connections of the output control module in one embodiment. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings. Similar elements in different embodiments are referred to by associated similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of this application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to this application are not shown or described in the specification. This is to avoid obscuring the core parts of this application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0029] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0030] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0031] Please refer to Figure 2 and Figure 3This diagram illustrates the structural connection of the isolated communication module and the schematic diagram of the serial communication circuit. The communication management system includes a main control module 11, an isolated communication module 20, and a slave control module 31. The number of isolated communication modules 20 and slave control modules 31 is the same, and each isolated communication module 20 is connected between the main control module 11 and one slave control module 31 for serial communication between the main control module 11 and the slave control module 31. The main control module 11 and the slave control module 31 each include a microcontroller unit (MCU). The isolated communication module 20 includes an isolated data communication circuit 21, which includes a universal asynchronous receiver / transmitter (UART) using optocoupler isolation technology to realize serial communication between the main control module 11 and the slave control module 31. A universal asynchronous receiver / transmitter (UART) is a hardware device used for serial communication, commonly used for data transmission between microcontrollers, computers, and other electronic devices. Universal Asynchronous Receiver / Transmitter (UART) asynchronous communication does not require a shared clock signal, relies on a predefined baud rate for synchronization, supports full-duplex, and can send and receive data simultaneously. Due to its simple hardware implementation and low cost, it is widely used. The transmitting end of a UART needs to convert parallel data into serial data, add start, stop, and parity bits before transmission. The receiving end of the UART detects the start bit, samples data according to the baud rate, performs parity checks, and converts it back into parallel data. In multi-channel power supplies, when a master control module communicates serially with multiple slave control modules, the UART also needs to perform chip select on the slave control modules to determine which slave control module is currently being serially communicated with. Currently widely used serial communication-based multi-channel power supplies have a communication mode that limits the ability to upgrade and maintain slave control modules after they leave the factory (multi-channel power supplies isolate the hardware connection and data transmission methods of the data communication circuit during operation, preventing software upgrades and data writing to slave control modules due to different transmission protocols). Upgrading and maintaining the software of a multi-channel power supply based on serial communication requires factory return, significantly reducing user experience and increasing subsequent maintenance costs. Therefore, it is necessary to add post-maintenance and upgrade functionality to the existing circuitry of the multi-channel power supply. When adding post-maintenance and upgrade functionality from the control unit to the communication management system, it is also crucial to minimize modifications to the original circuitry to reduce the difficulty of upgrading an existing multi-channel power supply.

[0032] In this embodiment, an isolation upgrade communication unit is added to the original isolation communication module to enable the later maintenance and upgrade function of the control unit, so as to achieve the upgrade of multi-channel power supply with minimal modification to the original circuit.

[0033] Example 1:

[0034] Please refer to Figure 4 The diagram below illustrates the structure of a communication management system in one embodiment. The system includes a main control module 11, a communication unit 2, and a slave control module 31. The communication unit 2 includes at least one isolated communication module 20. This module 20 comprises an isolated data communication circuit 21 and an isolated upgrade communication circuit 22. The isolated data communication circuit 21 is connected between the main control module 11 and the slave control module 31, and is used for serial communication when the main control module 11 performs data electrical signal interaction with the slave control module 31. The isolated upgrade communication circuit 22 is connected between the main control module 11 and the slave control module 31, and is used for serial communication when the main control module 11 performs software upgrades on the slave control module 31. In one embodiment, the isolated data communication circuit 21 and the isolated upgrade communication circuit 22 are both Universal Asynchronous Receiver / Transmitter (UART) devices using optocoupler isolation technology.

[0035] Please refer to Figure 5 This is a circuit connection diagram of an isolated communication module in one embodiment. The isolated data communication circuit 21 includes a first multi-channel digital isolation chip U1, and the isolated upgrade communication circuit 22 includes a second multi-channel digital isolation chip U2. In one embodiment, the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are used as a four-channel digital isolator. The first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 respectively include a first connection terminal VCC1, a second connection terminal GND1, a third connection terminal INA, a fourth connection terminal INB, a fifth connection terminal INC, a sixth connection terminal OUTD, a seventh connection terminal EN1, an eighth connection terminal GND2, a ninth connection terminal GND3, a tenth connection terminal EN2, an eleventh connection terminal IND, a twelfth connection terminal OUTC, a thirteenth connection terminal OUTB, a fourteenth connection terminal OUTA, a fifteenth connection terminal GND4, and a sixteenth connection terminal VCC2.

[0036] Please refer to Figure 6The diagram illustrates the circuit connections of a communication management system in one embodiment. The third connection terminal INA, the fourth connection terminal INB, the fifth connection terminal INC, and the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are connected to the main control module 11. The eleventh connection terminal IND, the twelfth connection terminal OUTC, the thirteenth connection terminal OUTB, and the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are electrically connected to the slave control module 31. A first diode D1 is connected in series between the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1 and the main control module 11. The anode of the first diode D1 is connected to the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1, and the cathode of the first diode D1 is connected to the main control module 11. Similarly, a second diode D2 is connected in series between the sixth connection terminal OUTD of the second multi-channel digital isolation chip U2 and the main control module 11. The anode of the second diode D2 is connected to the sixth connection terminal OUTD of the second multi-channel digital isolation chip U2, and the cathode of the second diode D2 is connected to the main control module 11. A third diode D3 is connected in series between the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1 and the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2. The positive terminal of the third diode D3 is connected to the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2, and the negative terminal of the third diode D3 is connected to the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1.

[0037] In one embodiment, the isolated communication module 20 further includes a first resistor R1, one end of which is connected to the negative terminal of the first diode D1, and the other end is grounded.

[0038] In one embodiment, the isolation communication module 20 further includes a second resistor R2, one end of which is connected to the negative terminal of the second diode D2, and the other end is grounded;

[0039] In one embodiment, the isolation upgrade communication circuit 22 further includes a third resistor R3 and a fourth resistor R4. The third resistor R3 is connected in series between the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2 and the slave control module 31. One end of the fourth resistor R4 is connected to the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2, and the other end is used to input a preset voltage signal (+3V3B).

[0040] like Figure 6As shown, the communication management system includes at least two slave control modules 31, and the communication unit 2 includes the same number of isolated communication modules 20 as the slave control modules 31. Each isolated communication module 20 is connected to one slave control module 31. The cathode of the first diode D1 in each isolated data communication circuit 21 is electrically connected, and the cathode of the second diode D2 in each isolated upgrade communication circuit 22 is electrically connected. The fourth connection terminal INB of each first multi-channel digital isolation chip U1 is electrically connected. The fifth connection terminal INC of each first multi-channel digital isolation chip U1 is electrically connected. The fifth connection terminal INC of each second multi-channel digital isolation chip U2 is electrically connected.

[0041] In one embodiment, the master control module 11 and the slave control module 31 each include an STM32 chip circuit (microcontroller circuit).

[0042] One embodiment of this application also discloses a multi-channel power supply, including the communication management system described above.

[0043] Please refer to Figure 7 The diagram shows the electrical connection of the output control module in one embodiment. In one embodiment, the multi-channel power supply also includes an output control module 4. The output control module is connected to the main control module 11 and each slave control unit 3 of the multi-channel power supply 4. It is used to respond to a preset output control electrical signal output by the main control module 11 and to connect the power signals output by at least two slave control units 3 in series or in parallel as the output power of the multi-channel power supply.

[0044] To facilitate understanding of how the communication management system disclosed in this application operates during software upgrades and maintenance of the slave control module, specific embodiments are described below, including:

[0045] For ease of description, the multi-channel power supply is assumed to include three power output channels. Therefore, the communication unit also includes three isolated communication modules 20, each of which is connected to a slave control module 31 of one power output channel. For example... Figure 6As shown, when the communication management system enters the bootstrap program, it first resets each functional module, i.e., the device. When upgrading the slave control module 31 of the first power output channel, the master IO of the master control module 11 corresponds to the first Master_RST. Pulling it low and then high completes the reset of the first slave control module 31. The BOOT0 signal connection terminal of the master (the first Master_ch_BOOT0 signal connection) is configured to 1. Since it is a master-to-many slave structure, in order to prevent the other two isolated upgrade communication circuits from affecting the signal of the first isolated upgrade communication circuit during the upgrade, a Schottky diode is added to the Slave_TX signal connection terminal of the transmitting end of the master control module 11, with a conduction voltage of 0. A voltage of 1-0.3V is connected to the Slave_CS signal connection terminal. The first isolated upgrade communication circuit sets the Slave1_CS signal connection terminal to 1, while the Slave2_CS signal connection terminals of the other isolated upgrade communication circuits are set to 0. The Slave_TX signal connection terminals of the other isolated upgrade communication circuits are clamped to 0.3V. When the Master_TX signal connection terminal of the master control module 11 sends a 0X7F command to the slave control module 31, since the Slave_TX signal connection terminals of the other isolated upgrade communication circuits are clamped to a low level except for the first isolated upgrade communication circuit, only the first isolated upgrade communication circuit can receive 0X7F and thus perform an upgrade response. TX_A returns 0X79, which is read back by the Master_RX signal connection terminal of the receiving end of the master control module 11 after isolation. After waiting for 1 byte duration, it enters the bootstrap program. The master control module 11 loads the upgrade program into the slave control module 31 connected to the first isolated upgrade communication circuit through the Master_TX signal connection terminal. After loading, the same method is used to upgrade the other slave control modules 31. Specifically, the TX_A signal connection terminals of the three slave control modules are set to 0 by default. The Master_RX signal connection terminal of the master control module 11 is connected in parallel via three readback paths through the second diode D2 in each isolated communication module 20, with a default state of 0 and pull-down resistor R2. Only when one of these three paths transmits a 1 can the Master_RX signal connection terminal of the master control module 11 receive a 1, thus ensuring that the upgrades of the three power output channels do not affect each other.

[0046] The communication management system disclosed in this application includes a main control module, a communication unit, and a slave control module. The communication unit includes an isolated communication module, which comprises an isolated data communication circuit and an isolated upgrade communication circuit. The isolated data communication circuit is used for serial communication when the main control module and the slave control module exchange data electrical signals. The isolated upgrade communication circuit is used for serial communication when the main control module performs software upgrades on the slave control module. By adding an isolated upgrade communication circuit to the existing multi-channel power supply's isolated communication module, the main control module can perform software upgrades on the slave control module through the isolated upgrade communication circuit. This adds a post-upgrade and maintenance function to the existing multi-channel power supply's output channels, ensuring that the upgrade of the multi-channel power supply is achieved with minimal modification to the original circuit, thereby greatly improving the user experience.

[0047] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A communication management system for multi-channel power supplies, characterized in that, It includes a main control module, a communication unit, and a slave control module; The communication unit includes at least one isolated communication module; the isolated communication module includes an isolated data communication circuit and an isolated upgrade communication circuit, the isolated data communication circuit is connected between the main control module and the slave control module, and is used for serial communication when the main control module and the slave control module perform data electrical signal interaction; wherein, the data electrical signal includes electrical parameter information of the output power of each power output channel in the multi-channel power supply that is set and / or monitored and acquired; The isolation upgrade communication circuit is connected between the main control module and the slave control module, and is used for serial communication when the main control module performs software upgrades on the slave control module. The isolated data communication circuit and the isolated upgrade communication circuit are both general asynchronous transceivers using optocoupler isolation technology.

2. The communication management system as described in claim 1, characterized in that, The isolated data communication circuit includes a first multi-channel digital isolation chip U1, and the isolated upgrade communication circuit includes a second multi-channel digital isolation chip U2; the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are used as a four-channel digital isolator; the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 respectively include a first connection terminal VCC1, a second connection terminal GND1, a third connection terminal INA, a fourth connection terminal INB, a fifth connection terminal INC, a sixth connection terminal OUTD, a seventh connection terminal EN1, an eighth connection terminal GND2, a ninth connection terminal GND3, a tenth connection terminal EN2, an eleventh connection terminal IND, a twelfth connection terminal OUTC, a thirteenth connection terminal OUTB, a fourteenth connection terminal OUTA, a fifteenth connection terminal GND4, and a sixteenth connection terminal VCC2.

3. The communication management system as described in claim 2, characterized in that, The third connection terminal INA, the fourth connection terminal INB, the fifth connection terminal INC, and the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are connected to the main control module, and the eleventh connection terminal IND, the twelfth connection terminal OUTC, the thirteenth connection terminal OUTB, and the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1 and the second multi-channel digital isolation chip U2 are electrically connected to the slave control module. Specifically, a first diode D1 is connected in series between the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1 and the main control module. The positive terminal of the first diode D1 is connected to the sixth connection terminal OUTD of the first multi-channel digital isolation chip U1, and the negative terminal of the first diode D1 is connected to the main control module. A second diode D2 is connected in series between the sixth connection terminal OUTD of the second multi-channel digital isolation chip U2 and the main control module. The positive terminal of the second diode D2 is connected to the sixth connection terminal OUTD of the second multi-channel digital isolation chip U2, and the negative terminal of the second diode D2 is connected to the main control module. A third diode D3 is connected in series between the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1 and the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2. The positive terminal of the third diode D3 is connected to the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2, and the negative terminal of the third diode D3 is connected to the fourteenth connection terminal OUTA of the first multi-channel digital isolation chip U1.

4. The communication management system as described in claim 3, characterized in that, The isolated communication module also includes a first resistor R1, one end of which is connected to the negative terminal of the first diode D1, and the other end is grounded.

5. The communication management system as described in claim 3, characterized in that, The isolated communication module also includes a second resistor R2, one end of which is connected to the negative terminal of the second diode D2, and the other end is grounded.

6. The communication management system as described in claim 3, characterized in that, The isolation upgrade communication circuit also includes a third resistor R3 and a fourth resistor R4; the third resistor R3 is connected in series between the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2 and the slave control module, one end of the fourth resistor R4 is connected to the twelfth connection terminal OUTC of the second multi-channel digital isolation chip U2, and the other end is used to input a preset voltage signal.

7. The communication management system as described in claim 3, characterized in that, The communication unit includes at least two slave control modules, and the number of isolation communication modules is the same as the number of slave control modules; each isolation communication module is connected to one slave control module. The cathode of the first diode D1 in each of the isolated data communication circuits is electrically connected, and the cathode of the second diode D2 in each of the isolated upgrade communication circuits is electrically connected; the fourth connection terminal INB of each of the first multi-channel digital isolation chips U1 is electrically connected, the fifth connection terminal INC of each of the first multi-channel digital isolation chips U1 is electrically connected, and the fifth connection terminal INC of each of the second multi-channel digital isolation chips U2 is electrically connected.

8. The communication management system as described in claim 1, characterized in that, The main control module and the slave control module each include an STM32 chip circuit.

9. A multi-channel power supply, characterized in that, Including the communication management system as described in any one of claims 1 to 8.

10. The multi-channel power supply as described in claim 9, characterized in that, It also includes an output control module, which is connected to the main control module and each slave control unit of the multi-channel power supply, and each slave control unit is used as a power output channel of the multi-channel power supply. The output control module is used to respond to a preset output control electrical signal output by the main control module, and to connect at least two power signals output from the control unit in series or in parallel as the output power of the multi-channel power supply.

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