CN115167648A - VPX power supply equipment - Google Patents
VPX power supply equipment Download PDFInfo
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- CN115167648A CN115167648A CN202211092535.7A CN202211092535A CN115167648A CN 115167648 A CN115167648 A CN 115167648A CN 202211092535 A CN202211092535 A CN 202211092535A CN 115167648 A CN115167648 A CN 115167648A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
Abstract
The application discloses VPX power supply equipment belongs to power technical field, and VPX power supply equipment includes balanced control module, selection module, a plurality of power module and healthy management module at least, and balanced control module links to each other with a plurality of power module through selection module, and healthy management module links to each other with a plurality of power module. The health management module is used for sending output voltage information, output current information, temperature information and running state of each power supply module to external management equipment; the balance control module is used for controlling the conduction state of the diodes in the selection module, controlling the running state of the power supply module through the conduction state of the diodes, and monitoring the temperature information, the current value and the voltage value of each board card in the VPX power supply equipment in real time. According to the VPX power supply device, if one power supply module fails, other power supply modules can be used for guaranteeing uninterrupted power supply of the VPX power supply equipment, and high reliability of the VPX power supply equipment is achieved.
Description
Technical Field
The application belongs to the technical field of power supplies, and particularly relates to a VPX power supply device.
Background
The VPX server is computer equipment with a blade type card inserting structure, the VPX server comprises a VPX power supply unit, the power supply unit is in a blade type, a plurality of function board cards such as a calculating board, a switching board and a storage board are further arranged in the VPX server, the VPX power supply unit provides working power supplies such as direct current +48V, direct current +12V and direct current +3.3V for the board cards, and the reliability of the VPX power supply unit has great influence on the reliability of the function board card.
If the VPX power supply unit fails, the VPX power supply unit cannot provide voltage for each board card any more, and each board card cannot work normally.
Disclosure of Invention
This application is anticipated is providing a VPX power supply unit to solve the not enough that exists among the prior art, the technical problem that this application will be solved realizes through following technical scheme.
The embodiment of the application provides VPX power supply equipment, which at least comprises a balance control module, a selection module, a plurality of power supply modules and a health management module, wherein the balance control module is connected with the plurality of power supply modules through the selection module, the health management module is connected with the plurality of power supply modules, the VPX power supply equipment at least comprises a power supply module, a power supply module and a health management module,
the health management module is used for sending the output voltage information, the output current information, the temperature information and the running state of each power supply module to external management equipment;
the balance control module is used for controlling the conduction state of the diode in the selection module and controlling the running state of the power supply module through the conduction state of the diode.
Optionally, the power supply module at least comprises an EMC filter circuit, a PFC circuit and a dc conversion circuit, wherein an input terminal of the EMC filter circuit is connected to an ac input power source, an output terminal of the EMC filter circuit is connected to an input terminal of the PFC circuit, and an output terminal of the PFC circuit is connected to an input terminal of the dc conversion circuit; wherein the content of the first and second substances,
the EMC filter circuit is used for eliminating resonance signals and high-frequency interference signals carried by the alternating current input power supply to obtain processed alternating current signals;
the PFC circuit is used for converting the processed alternating current signal into a first direct current signal;
the direct current conversion circuit is used for converting a first direct current signal into a second direct current signal, and the second direct current signal is used for supplying power to each module of the VPX power supply equipment.
Optionally, the PFC circuit comprises at least: the control chip is used for controlling the input current waveform to enable the input current waveform to be synchronous with the processed voltage signal, a first pin of the control chip is connected with a first end of the processed alternating current signal, a fourth pin of the control chip is connected with a second end of the processed alternating current signal, and a fifth pin and a ninth pin of the control chip are respectively connected with an input end of the direct current conversion circuit.
Optionally, the control chip includes at least a PFCU390 series integrated chip.
Optionally, the dc conversion circuit at least includes a +48V conversion unit, a +12V conversion unit and a +3.3V conversion unit, where the +48V conversion unit is configured to convert a first dc signal into a dc voltage of +48V, the +12V conversion unit is configured to convert the first dc signal into a dc voltage of +12V, and the +3.3V conversion unit is configured to convert the dc voltage of +48V into a dc voltage of +3.3V.
Optionally, the +48V conversion unit at least includes a 280S48 series isolated power supply module, and the 280S48 series isolated power supply module is configured to convert DC390V DC high voltage into 48V DC low voltage.
Optionally, the +12V conversion unit at least includes a 280S12 series isolated power supply module, and the 280S12 series isolated power supply module is configured to convert DC390V DC high voltage into DC 12V DC low voltage.
Optionally, the +3.3V conversion unit at least includes a 48S03 series isolated power supply module, and the 48S03 series isolated power supply module is configured to convert DC48V DC low voltage into 3.3V DC low voltage.
Optionally, the selection module is an OR gate chip.
Optionally, the health management module includes a collection unit and a processing unit, the collection unit at least includes a temperature sensor, a current sensor and a voltage sensor, wherein the temperature sensor is used for acquiring temperature information of each board card in the VPX power supply device, the current sensor is used for collecting output current information of each power supply module, the voltage sensor is used for collecting output voltage information of each power supply module, the processing unit is used for processing the output voltage information, the output current information, the temperature information and the running state through I 2 And C, sending the mode to an external management device.
The embodiment of the application has the following advantages:
the VPX power supply equipment provided by the embodiment of the application at least comprises a balance control module, a selection module, a plurality of power supply modules and a health management module, wherein the balance control module is connected with the plurality of power supply modules through the selection module, and the health management module is connected with the plurality of power supply modules and is used for sending output voltage information, output current information, temperature information and running states of the power supply modules to external management equipment; the balance control module is used for controlling the conduction state of the diodes in the selection module, controlling the running state of the power supply module through the conduction state of the diodes, monitoring the temperature information, the current value and the voltage value of each board card in the VPX power supply equipment in real time, and meanwhile, if one power supply module fails, other power supply modules can be provided, so that uninterrupted power supply of the VPX power supply equipment is guaranteed, and high reliability of the VPX power supply equipment is achieved.
Drawings
In order to more clearly illustrate the embodiments or prior art solutions of the present application, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present application, and that other drawings can be obtained by those skilled in the art without inventive labor.
Fig. 1 is a schematic structural diagram of a VPX power supply apparatus according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another VPX power supply device according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an equalization control module according to an embodiment of the present application;
FIG. 4 is a circuit diagram of an EMC filter circuit according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a PFC circuit according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a DC/DC circuit according to an embodiment of the present application;
FIG. 7 is a diagram of a health management module in an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments and corresponding drawings. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a schematic structural diagram of a VPX power supply device of the present application is shown, the VPX power supply device includes at least a balance control module 101, a selection module 102, a plurality of power supply modules 103, and a health management module 104, the balance control module 101 is connected to the plurality of power supply modules 103 through the selection module 102, the health management module 104 is connected to the plurality of power supply modules 103, wherein,
the health management module 104 is used for sending the output voltage information, the output current information, the temperature information and the running state of each power supply module to external management equipment;
the balance control module 101 is configured to control a conduction state of a diode in the selection module, and control an operation state of the power supply module according to the conduction state of the diode.
The purpose of the embodiment of the application is to provide a high-reliability VPX power supply module for solving the problems of self-set health management, redundancy backup and the like of a VPX power supply device, wherein the VPX power supply device comprises health management capability and can report information such as self voltage, current, temperature, normality/abnormality and the like to an external management device; and through setting up a plurality of power supply modules, if a power supply module breaks down, can also use other power supply modules to supply power, can not exert an influence to the power supply function.
Fig. 2 is a schematic structural diagram of another VPX power supply apparatus according to an embodiment of the present application; the power supply module in the VPX power supply equipment at least comprises an EMC filter circuit, a PFC circuit and a direct current conversion circuit, wherein the input end of the EMC filter circuit is connected with an alternating current input power supply, the output end of the EMC filter circuit is connected with the input end of the PFC circuit, and the output end of the PFC circuit is connected with the input end of the direct current conversion circuit; wherein the content of the first and second substances,
the EMC filter circuit is used for eliminating resonance signals and high-frequency interference signals carried by an alternating current input power supply to obtain processed alternating current signals;
the PFC circuit is used for converting the processed alternating current signal into a first direct current signal;
the direct current conversion circuit is used for converting the first direct current signal into a second direct current signal, and the second direct current signal is used for supplying power to each module of the VPX power supply equipment.
Specifically, the operating principle of the VPX power supply device is as follows:
220V alternating current is input to a power supply blade through a VPX back plate, is converted into 390V stable direct current voltage through an EMC filter circuit and a PFC circuit, and 390V direct current is output to a DC/DC circuit and is converted into +48V, +12V and +3.3V stable direct current voltage. A real-time sampling circuit is designed at a voltage output end of the high-reliability VPX power supply unit, an I2C bus is used as an integrated management bus (IPMB), monitoring, inquiring and collecting of the output state of the VPX power supply unit are achieved, and collected data are transmitted to an MCU control circuit. And finally, the MCU control circuit completes the real-time monitoring functions of the output voltage of the VPX power supply unit, the board temperature and the working state.
Because the high-reliability VPX power supply unit has powerful functions and complex logic, the high-reliability VPX power supply unit is further divided into the following five functional sub-circuits:
1) An EMC filter circuit (EMC, electro Magnetic Compatibility) — eliminates resonance and high-frequency interference signals carried by external alternating current input, prevents the interference from being caused to a VPX power supply unit, and enables the power supply unit to work more stably;
2) A PFC (Power Factor Correction) circuit for converting an alternating current 220V voltage into a stable direct current 390V voltage and simultaneously carrying out Power Factor Correction to improve the Power Factor of a Power supply unit;
3) A DC/DC circuit (DC/DC, direct current/direct current conversion) — converts the direct current high voltage output by the PFC circuit into a multi-path stable direct current low voltage output to supply power to the whole VPX server;
4) The 2+1 redundancy parallel circuit realizes cooperative work through the 2+1 redundancy function circuit, and single-point failure of the power system is eliminated;
5) MCU control circuit (MCU, micro Controller Uint, microcontroller): and the I2C bus is used as an integrated management bus (IPMB) to realize the report of the health state of the board card.
Fig. 3 is a schematic structural diagram of an equalization control module in an embodiment of the present application, where the equalization control module is a Hot-Plug Hot-swap equalization controller, and the selection module is an OR gate chip.
In the embodiment of the application, 3 power supply modules, that is, a VPX power supply unit as in fig. 3, a "2+1" redundant parallel circuit is used to realize cooperative work through a 2+1 redundant functional circuit, and a single point fault of a power supply system is eliminated.
When the VPX server works normally, 3 power blades bear system load at the same time, and when one blade 1 has a problem and stops supplying power, the other 2 blades bear the excess power load by the average of '0 delay'.
The 2+1 redundant parallel circuit realizes load balance among a plurality of VPX power supply units by the Hot Plug balance controller, the VPX power supply units are connected in parallel through an OR OR gate chip, the Hot Plug balance controller is responsible for controlling the conduction state of an internal diode of the gate, and when one power supply blade fails, the 2+1 redundant parallel circuit can change the conduction state of the diode, so that the failed power supply unit is disconnected from the load, and the rest power supply units immediately support all loads, thereby ensuring uninterrupted power supply of equipment and realizing high reliability of the VPX power supply unit.
FIG. 4 is a circuit diagram of an EMC filter circuit according to an embodiment of the present application; the role of EMC is to eliminate resonance and high frequency interference signals carried by the external ac input.
FIG. 5 is a schematic diagram of a PFC circuit according to an embodiment of the present application; the PFC circuit includes at least: and the control chip is used for controlling the input current waveform to synchronize the input current waveform with the processed voltage signal, a first pin of the control chip is connected with a first end of the processed alternating current signal, a fourth pin of the control chip is connected with a second end of the processed alternating current signal, and a fifth pin and a ninth pin of the control chip are respectively connected with the input end of the direct current conversion circuit.
The control chip at least comprises a PFCU390 series integrated chip.
The PFC circuit is used for converting an alternating current 220V voltage into a stable direct current 390V voltage and improving the power factor of the VPX power supply unit through a power factor correction function.
Specifically, 220V alternating current is input to the PFC circuit after EMC filtering, and meanwhile, 450V and 820uF electrolytic capacitors are added to the rear end of the PFC circuit, so that the PFC circuit outputs stable PFC direct current voltage 390V, and the output power is 1400W. Because the PFC circuit has the effect of improving power factor, can control input current waveform, make its synchronous input voltage waveform, consequently can guarantee that the voltage input range of the 220V alternating current of input can reach 110VAC 10% or 220VAC 10%, input frequency can reach 60Hz 3Hz @110VAC or 50Hz 3Hz @220VAC.
FIG. 6 is a schematic diagram of a DC/DC circuit according to an embodiment of the present application; the DC/DC circuit is used for converting the direct-current high voltage output by the PFC circuit into multi-path stable direct-current low-voltage output and supplying power to the whole VPX server.
The direct current conversion circuit at least comprises a +48V conversion unit, a +12V conversion unit and a +3.3V conversion unit, wherein the +48V conversion unit is used for converting a first direct current signal into direct current voltage +48V, the +12V conversion unit is used for converting the first direct current signal into direct current voltage +12V, and the +3.3V conversion unit is used for converting the direct current voltage +48V into the direct current voltage +3.3V.
Optionally, the +48V conversion unit includes at least a 280S48 series isolated power supply module, and the 280S48 series isolated power supply module is used for converting DC390V DC high voltage into 48V DC low voltage.
A280S 48 series isolation power supply module is adopted to convert DC390V direct current high voltage into 48V direct current low voltage, the total output power is not less than 100W, and the protection circuit has the input overvoltage, undervoltage, output overvoltage, overcurrent, short circuit and over-temperature protection functions.
Optionally, the +12V conversion unit at least includes a 280S12 series isolated power supply module, and the 280S12 series isolated power supply module is configured to convert DC390V DC high voltage into DC 12V DC low voltage.
A280S 12 series isolation power supply module is adopted to convert DC390V direct current high voltage into 12V direct current low voltage, the total output power is not less than 1000W, and the protection functions of input overvoltage, undervoltage, output overvoltage, overcurrent, short circuit and over-temperature are realized.
Optionally, the +3.3V conversion unit includes at least a 48S03 series isolated power supply module, and the 48S03 series isolated power supply module is configured to convert the DC48V DC low voltage into a 3.3V DC low voltage.
A48S 03 series isolation power supply module is adopted to further convert DC48V direct current low voltage into 3.3V direct current low voltage, the total output power is not less than 50W, and the module has the functions of input overvoltage, undervoltage, output overvoltage, overcurrent, short circuit and overtemperature protection.
Fig. 7 is a schematic diagram of a health management module in an embodiment of the present application, where the health management module includes a collection unit and a processing unit, the collection unit includes at least a temperature sensor, a current sensor, and a voltage sensor, where the temperature sensor is configured to acquire temperature information of each board in a VPX power supply device, the current sensor is configured to acquire output current information of each power supply module, the voltage sensor is configured to acquire output voltage information of each power supply module, and the processing unit is configured to send the output voltage information, the output current information, the temperature information, and an operating state to an external management device in an I2C manner.
The health management module is an MCU control circuit which completes the monitoring of the output voltage of the power supply unit, the board temperature and the working state and actively reports information by taking an I2C bus as an integrated management bus (IPMB).
It should be noted that for simplicity of description, the method embodiments are described as a series of acts, but those skilled in the art should understand that the embodiments are not limited by the described order of acts, as some steps can be performed in other orders or simultaneously according to the embodiments. Further, those skilled in the art will also appreciate that the embodiments described in the specification are presently preferred and that no particular act is required of the embodiments of the application.
The VPX power supply equipment provided by the embodiment of the application at least comprises a balance control module, a selection module, a plurality of power supply modules and a health management module, wherein the balance control module is connected with the plurality of power supply modules through the selection module, and the health management module is connected with the plurality of power supply modules and is used for sending output voltage information, output current information, temperature information and running states of the power supply modules to external management equipment; the balance control module is used for controlling the conduction state of the diodes in the selection module, controlling the running state of the power supply module through the conduction state of the diodes, monitoring the temperature information, the current value and the voltage value of each board card in the VPX power supply equipment in real time, and meanwhile, if one power supply module fails, other power supply modules can be provided, so that uninterrupted power supply of the VPX power supply equipment is guaranteed, and high reliability of the VPX power supply equipment is achieved.
It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or otherwise described herein.
Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may also be oriented in other different ways, such as by rotating it 90 degrees or at other orientations, and the spatially relative descriptors used herein interpreted accordingly.
In the above detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, like symbols typically identify like components, unless context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented here.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A VPX power supply device is characterized by at least comprising a balance control module, a selection module, a plurality of power supply modules and a health management module, wherein the balance control module is connected with the plurality of power supply modules through the selection module, the health management module is connected with the plurality of power supply modules, wherein,
the health management module is used for sending the output voltage information, the output current information, the temperature information and the running state of each power supply module to external management equipment;
the balance control module is used for controlling the conduction state of the diode in the selection module and controlling the running state of the power supply module through the conduction state of the diode.
2. The VPX power supply device according to claim 1, wherein the power supply module comprises at least an EMC filter circuit, a PFC circuit and a DC conversion circuit, wherein an input terminal of the EMC filter circuit is connected to an AC input power source, an output terminal of the EMC filter circuit is connected to an input terminal of the PFC circuit, and an output terminal of the PFC circuit is connected to an input terminal of the DC conversion circuit; wherein, the first and the second end of the pipe are connected with each other,
the EMC filter circuit is used for eliminating resonance signals and high-frequency interference signals carried by the alternating current input power supply to obtain processed alternating current signals;
the PFC circuit is used for converting the processed alternating current signal into a first direct current signal;
the direct current conversion circuit is used for converting a first direct current signal into a second direct current signal, and the second direct current signal is used for supplying power to each module of the VPX power supply equipment.
3. The VPX power supply device of claim 2, wherein the PFC circuit comprises at least: the control chip is used for controlling the input current waveform to enable the input current waveform to be synchronous with the processed voltage signal, a first pin of the control chip is connected with a first end of the processed alternating current signal, a fourth pin of the control chip is connected with a second end of the processed alternating current signal, and a fifth pin and a ninth pin of the control chip are respectively connected with an input end of the direct current conversion circuit.
4. The VPX power supply device of claim 3, wherein the control chip comprises at least a PFCU390 series integrated chip.
5. The VPX power supply device of claim 2, wherein the DC conversion circuit comprises at least a +48V conversion unit, a +12V conversion unit, and a +3.3V conversion unit, wherein the +48V conversion unit is configured to convert a first DC signal into +48V, the +12V conversion unit is configured to convert the first DC signal into +12V, and the +3.3V conversion unit is configured to convert +48V into +3.3V.
6. The VPX power supply of claim 5, wherein the +48V conversion unit comprises at least a 280S48 series isolated power supply module, the 280S48 series isolated power supply module to convert DC390V DC high voltage to 48V DC low voltage.
7. The VPX power supply of claim 5, wherein the +12V conversion unit comprises at least a 280S12 series isolated power supply module, the 280S12 series isolated power supply module to convert DC390V DC high voltage to 12V DC low voltage.
8. The VPX power supply of claim 5, wherein the +3.3V conversion unit comprises at least a 48S03 series isolated power supply module, the 48S03 series isolated power supply module to convert DC48V DC low voltage to 3.3V DC low voltage.
9. The VPX power supply apparatus of claim 1, wherein the selection module is an OR gate chip.
10. The VPX power supply equipment according to claim 1, wherein the health management module comprises an acquisition unit and a processing unit, the acquisition unit comprises at least a temperature sensor, a current sensor and a voltage sensor, wherein the temperature sensor is used for acquiring temperature information of each board in the VPX power supply equipment; the current sensor is used for collecting output current information of each power supply module, the voltage sensor is used for collecting output voltage information of each power supply module, and the processing unit is used for processing the output voltage information, the output current information, the temperature information and the running state through I 2 And C, sending the mode to an external management device.
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