CN116243777A - Power failure maintaining device and server - Google Patents

Power failure maintaining device and server Download PDF

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Publication number
CN116243777A
CN116243777A CN202310080324.XA CN202310080324A CN116243777A CN 116243777 A CN116243777 A CN 116243777A CN 202310080324 A CN202310080324 A CN 202310080324A CN 116243777 A CN116243777 A CN 116243777A
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China
Prior art keywords
capacitor
voltage
switching tube
power
circuit
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CN202310080324.XA
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Chinese (zh)
Inventor
张东宇
王令岩
花得阳
李建宇
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Suzhou Inspur Intelligent Technology Co Ltd
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Suzhou Inspur Intelligent Technology Co Ltd
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Priority to CN202310080324.XA priority Critical patent/CN116243777A/en
Publication of CN116243777A publication Critical patent/CN116243777A/en
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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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

The application provides a power down holding device and server, include: the circuit working mode control module controls the second capacitor to continuously BOOST and charge until the voltage reaches the target energy storage voltage through the bidirectional BOOST circuit when the voltage of the first capacitor of the bus input circuit unit and the voltage of the second capacitor of the high-voltage energy storage circuit unit reach the rated voltage of the bus after the server is powered on, so that sufficient energy can be stored, and the second capacitor discharges to the first capacitor when the server is powered off, thereby realizing the power-off maintenance of the input bus; when the second capacitor discharges to be equal to the voltage of the first capacitor, the bidirectional BOOST circuit is controlled to reversely BOOST, and the second capacitor continues to discharge to the first capacitor, so that the second capacitor can deeply release the stored energy, and the maximum power failure maintenance is realized.

Description

Power failure maintaining device and server
Technical Field
The application relates to the technical field of servers, in particular to a power failure maintaining device and a server.
Background
With the rapid development of the internet, informatization gradually covers various fields of society, the application scene and the working environment of a server serving as a data carrier are more and more complex, and data security and data reliability face serious test. In particular, today of electrification, various types of equipment in the tens of millions are connected to the power grid, and the risk of fluctuation or abnormality of the power grid is increasing. Therefore, it is necessary to design a power-down maintaining function on the server power supply. When the input power grid abnormally fluctuates or is powered down, the time for storing the data is reserved for the server main board, so that the data is prevented from being lost or destroyed.
In a conventional power-down holding scheme, a large number of capacitors are generally placed in parallel on a circuit to be held for energy storage, and when the input of the circuit to be held is powered down, the capacitor releases energy to maintain the power supply output for a period of time, so that the power-down holding is realized. However, a large number of capacitors need to be placed, so that the device occupies a large space, is only suitable for power-down maintenance of simple low-rate power equipment, and cannot realize high-power-down maintenance.
Disclosure of Invention
The application provides a power failure holding device and a server, which are used for solving the technical problems in the prior art.
The application provides a power down holding device, power down holding device sets up in the server, includes:
the circuit working mode control module and the bidirectional synchronous rectification BOOST circuit module comprise a bus input circuit unit, a bidirectional BOOST circuit and a high-voltage energy storage circuit unit;
the circuit working mode control module is used for controlling the second capacitor to continuously BOOST and charge until the voltage reaches a target energy storage voltage through the bidirectional BOOST circuit under the condition that the voltage of the first capacitor of the bus input circuit unit and the voltage of the second capacitor of the high-voltage energy storage circuit unit are boosted and charged together until the voltage reaches the bus rated voltage after the server is powered on, wherein the target energy storage voltage is higher than the bus rated voltage;
the circuit working mode control module is further configured to, when the server is in a power-down mode, BOOST-discharge the second capacitor to the first capacitor until the voltage of the second capacitor is equal to the voltage of the first capacitor, and control the second capacitor to continue to BOOST-discharge to the first capacitor through the bidirectional BOOST circuit until the server is down.
According to the power failure maintaining device provided by the application, the bidirectional BOOST circuit further comprises a first switching tube, a second switching tube, a third switching tube and a fourth switching tube;
the drain electrode of the first switching tube is connected with the positive electrode of the first capacitor, the source electrode of the second switching tube is connected with the negative electrode of the first capacitor, the source electrode of the third switching tube is connected with the positive electrode of the second capacitor, the drain electrode of the fourth switching tube is connected with the negative electrode of the second capacitor, the source electrode of the first switching tube is connected with the drain electrode of the second switching tube with one end of the inductor, and the source electrode of the third switching tube is connected with the drain electrode of the fourth switching tube with the other end of the inductor.
According to the power failure maintaining device provided by the application, the signal output end of the circuit working mode control module is connected with the grid electrode of the first switching tube, the grid electrode of the second switching tube, the grid electrode of the third switching tube and the grid electrode of the fourth switching tube;
the circuit working mode control module is used for controlling the first switch tube, the second switch tube, the third switch tube and the fourth switch tube to be conducted or closed so as to control the charge and discharge of the first capacitor and the second capacitor.
According to the power failure holding device, when the server is in the power-on mode, the first switching tube and the third switching tube are conducted, the second switching tube and the fourth switching tube are closed, the second capacitor is charged in a boosting mode along with the first capacitor until the voltage reaches the rated voltage of the bus, so that the influence of the high-voltage energy storage circuit on the voltage of the input bus in the starting process of the server is reduced.
According to the power failure maintaining device provided by the application, after the server is powered on, the second capacitor is charged in a boosting mode along with the first capacitor until the voltage reaches the rated voltage of the bus, the bidirectional BOOST circuit works in a forward boosting mode, the first switch tube is conducted, the second switch tube is closed, the inductor, the third switch tube and the fourth switch tube form the BOOST circuit, and the BOOST charging is continued for the second capacitor until the voltage of the second capacitor reaches the target energy storage voltage.
According to the power-down holding device provided by the application, when the server is in the power-down mode, the second switching tube and the fourth switching tube are closed, the first switching tube is conducted, the third switching tube is gradually conducted, the second capacitor naturally discharges to the first capacitor, and power-down holding of the bus voltage is realized until the voltage of the second capacitor is equal to the voltage of the first capacitor;
and the third switching tube works in a variable resistance area in the process of gradually conducting the third switching tube so as to limit the discharge current of the second capacitor within a controllable range.
According to the power failure maintaining device provided by the application, when the server is in the power failure mode, the second capacitor is discharged to be equal to the voltage of the first capacitor, the power failure maintaining of the bus voltage cannot be continuously realized, the third switching tube is conducted, the fourth switching tube is closed, the inductor, the first switching tube and the second switch Guan Guanzu Cheng Fanxiang BOOST circuit are conducted, and the second capacitor is continuously discharged to the first capacitor in a boosting mode until the server is down.
According to the power-down holding device provided by the application, the power-down holding device further comprises a voltage monitoring module, wherein the voltage monitoring module comprises a first voltage monitoring unit and a second voltage monitoring unit;
the first voltage monitoring unit is used for monitoring the voltage of the first capacitor;
the second voltage monitoring unit is used for monitoring the voltage of the second capacitor.
According to the power-down holding device provided by the application, the power-down holding device further comprises a controller;
the controller is used for sending corresponding control instructions to the circuit working mode control module based on the voltage of the first capacitor and the voltage of the second capacitor, so that the circuit working mode control module controls the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be conducted or closed.
The application also provides a server comprising the power-down holding device.
The power-down maintaining device comprises a circuit working mode control module and a bidirectional synchronous rectification BOOST circuit module connected with the circuit working mode control module, wherein the bidirectional synchronous rectification BOOST circuit module comprises a bus input circuit unit, a bidirectional BOOST circuit and a high-voltage energy storage circuit unit, and the circuit working mode control module is used for controlling the second capacitor to continuously BOOST and charge until the voltage reaches a target energy storage voltage under the condition that the first capacitor of the bus input circuit unit and the second capacitor of the high-voltage energy storage circuit unit BOOST and charge together until the voltage reaches the bus rated voltage after the server is powered on; the circuit working mode control module is also used for discharging the second capacitor of the high-voltage energy storage unit to the first capacitor of the bus input circuit unit when the server is powered down, so that the power failure maintenance of the input bus is realized; when the second capacitor discharges to be equal to the voltage of the first capacitor, the bidirectional BOOST circuit is controlled to reversely BOOST, and the second capacitor continues to discharge to the first capacitor, so that the second capacitor can deeply release the stored energy, and the maximum power failure maintenance is realized.
Drawings
For a clearer description of the present application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is one of the structural schematic diagrams of the power down retention device provided herein;
FIG. 2 is a second schematic structural view of the power-down holding device provided in the present application;
FIG. 3 is one of the circuit diagrams of the power down retention device provided herein;
FIG. 4 is a second circuit diagram of the power down holding device provided by the present application;
FIG. 5 is a third circuit diagram of the power down holding device provided herein;
FIG. 6 is a circuit diagram of a power down holding device provided herein;
fig. 7 is a third schematic structural view of the power-down holding device provided in the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects 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 are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.
As shown in fig. 1, a schematic structural diagram of a power-down holding device provided in an embodiment of the present application is shown, where the power-down holding device is disposed in a server, so that power-down holding control is performed on the server by the power-down holding device.
In this embodiment, the power-down holding device includes: the circuit operation mode control module 10 and the bidirectional synchronous rectification BOOST circuit module 20 connected with the circuit operation mode control module 10.
The bidirectional synchronous rectification BOOST circuit module 20 includes a bus input circuit unit 201, a bidirectional BOOST circuit 203, and a high-voltage energy storage circuit unit 202.
The circuit operation mode control module 10 is configured to send a corresponding control signal to the bidirectional BOOST circuit 202 to implement the first capacitor C in the bus input circuit unit 201 1 And a second capacitor C in the high voltage energy storage circuit unit 202 2 Is a charge-discharge state of (a).
Specifically, in this embodiment, the signal output end of the circuit operation mode control module 10 is connected to the signal input end of the bus bar input circuit unit 201 and the signal input end of the high voltage energy storage circuit unit 202, so that after the server is powered on, the first capacitor C of the bus bar input circuit unit 201 is used 1 And a second capacitor C of the high voltage energy storage circuit unit 202 2 In the case of BOOST charging together until the voltage reaches the bus rated voltage, the second capacitor C is controlled by the bidirectional BOOST circuit 203 2 And continuing to boost and charge until the voltage reaches the target energy storage voltage, wherein the target energy storage voltage is higher than the rated voltage of the bus.
It should be noted that, the rated voltage of the bus refers to the rated voltage of the high-voltage dc bus connected to the power supply access terminal of the bus input circuit unit 201, for example, 380VDC, and the target energy storage voltage refers to the maximum voltage that the second capacitor can reach, for example, 600VDC.
It should be understood that, under the condition that the capacitance of the capacitor is the same, the higher the voltage across the capacitor, the more energy is stored in the capacitor, and in this embodiment, except for connecting a first capacitor C to the connection terminal of the high-voltage dc bus 1 The energy storage is carried out, and an energy storage higher than the first capacitor C is additionally arranged 1 Is a second capacitor C of (2) 2 Control module for realizing circuit working mode10 can be in a second capacitor C when the server is in a power-on mode 2 Is connected with the first capacitor C 1 Under the condition that the energy storage of the first capacitor reaches the maximum energy which can be stored by the second capacitor, the second capacitor C is controlled 2 Continuing to store more energy, or in the second capacitor C when the server is in the power-down mode 2 To the first capacitor C 1 When the energy is released until the voltages of the two capacitors are equal, the bidirectional BOOST circuit 203 is controlled to BOOST reversely, and the second capacitor C 2 Continuing to the first capacitor C 1 Releasing energy until the second capacitance C 2 Is exhausted, and the server is down.
The power-down holding device provided in this embodiment stores sufficient energy by using fewer capacitors through the design of the boost circuit, and based on the control of the circuit operation mode control module 10, the second capacitor C can be made 2 The energy stored therein can be deeply released.
Further, referring to fig. 2, in the present embodiment, the bidirectional BOOST circuit 203 includes a first switching tube Q 1 Second switch tube Q 2 Third switch tube Q 3 Fourth switching tube Q 4 The switching transistors in this embodiment are all MOS (MOSFET, metal-oxide semiconductor field effect transistor) transistors.
Specifically, a first switching tube Q 1 Drain of (C) and a first capacitor C 1 Is connected with the positive electrode of the second switch tube Q 2 Source of (C) and first capacitor C 1 Is connected with the negative pole of a third switch tube Q 3 Source electrode of (C) and second capacitor C 2 Positive electrode connection of fourth switching tube Q 4 Drain of (C) and a second capacitor C 2 Is connected with the negative pole of the first switch tube Q 1 Source electrode of (C) and second switch tube Q 2 Drain electrode of (d) and inductance L 1 Is connected with one end of a third switch tube Q 3 Source electrode of (C) and fourth switch tube Q 4 Drain electrode of (d) and inductance L 1 Is connected with the other end of the connecting rod.
The signal output terminals (PWM 1, PWM2, PWM3, and PWM4 shown in fig. 2) of the circuit operation mode control module 10 and the first switching tube Q 1 Gate of (2), second switch tube Q 2 Gate of (d), third switch tube Q 3 Is a gate of (2)Pole and fourth switching tube Q 4 Is connected to the gate of the transistor.
In the present embodiment, the first switching tube Q 1 Second switch tube Q 2 Third switch tube Q 3 Fourth switching tube Q 4 The two-way BOOST circuits 203 are formed, in each switch circuit, the drain and source of the switch tube are equal to the two ends of the circuit to be turned on, the grid of the switch tube is switch controlled, and the signal output end of the circuit working mode control module 10 is directed to the first switch tube Q 1 Second switch tube Q 2 Third switch tube Q 3 Fourth switching tube Q 4 Transmitting corresponding high-low level control signals to control the first switch tube Q 1 Second switch tube Q 2 Third switch tube Q 3 Fourth switching tube Q 4 On or off, thus changing the first capacitance C 1 And a second capacitor C 2 The current flow direction of the circuit between the first capacitor C and the second capacitor C is realized 1 And a second capacitor C 2 Is charged and discharged.
In this embodiment, when the server is in the power-on mode, the first capacitor C 1 And a second capacitor C 2 In the case of zero energy storage, the first switching tube Q 1 Third switching tube Q 3 Conducting, second switch tube Q 2 Fourth switching tube Q 4 Turning off, referring to FIG. 4, FIG. 4 is an equivalent circuit diagram of a normal charging phase in the power-up mode, in which the second capacitor C 2 Following the first capacitance C 1 Boost charging together until the second capacitor C 2 Following the first capacitance C 1 And the voltage is boosted and charged until the voltage reaches the rated voltage of the bus, so that the influence of the high-voltage energy storage circuit on the voltage of the input bus in the starting process of the server is reduced.
Further, in this embodiment, after the server is powered on, the second capacitor C 2 Following the first capacitance C 1 When the voltage is boosted and charged together until the voltage reaches the rated voltage of the bus, the bidirectional BOOST circuit 203 operates in a forward BOOST mode, and the second switching tube Q 2 Closing the first switch tube Q 1 Conduction and inductance L 1 Third switch tube Q 3 Fourth switching tube Q 4 Composition of BOOST electricA circuit for supplying a second capacitor C 2 Continuing BOOST charging, as shown in FIG. 3, FIG. 3 is an equivalent circuit diagram of a BOOST charging stage in a power-up mode, in which the arrow indicates the inductance L 1 The current flow direction in (i.e. the current output by the high-voltage DC bus is from the first capacitor C of low voltage 1 Through inductance L 1 Second capacitor C continuing to flow to high voltage 2 The first capacitor C 1 The stored energy is saturated (i.e. the first capacitance C 1 The voltage across has reached the maximum voltage: bus rated voltage), the current output by the high-voltage direct-current bus passes through the inductor L 1 Continuing to the second capacitor C 2 Supplying power to enable the second capacitor to continue to boost and charge until the second capacitor C 2 The stored energy saturates (i.e. the second capacitance C 2 To the target storage voltage).
Thus, the power-down maintaining device provided by the application is realized by the second capacitor C 2 Following the first capacitance C 1 When the voltage reaches the rated voltage of the bus, the bidirectional BOOST circuit 203 is controlled to operate in the forward BOOST mode, so that the current output by the high-voltage direct-current bus can flow from low potential to high potential, and the second capacitor C is enabled 2 The boost charging is continued until the second capacitor C 2 The stored energy is saturated.
It should be noted that, when the power-down holding device provided in this embodiment is powered on, the server passes through two charging phases in succession, where the first phase is a normal charging phase, that is, the second capacitor C 2 Following the first capacitance C 1 BOOST charging is carried out together until the voltage reaches the rated voltage of the bus, and the second stage is a BOOST charging stage, namely a second capacitor C 2 The boost charging is continued until the second capacitor C 2 The stored energy is saturated, so that the embodiment can still continue to be stored in the second capacitor C after the power-up is completed 2 More energy is stored.
In this embodiment, when the server is in the power-down mode, the first capacitor C 1 Just start to lose power, i.e. the second capacitor C 2 Is greater than the first capacitance C 1 In the case of a voltage of (2) a second capacitance C 2 To the first capacitor C 1 Normal placingElectric, second switch tube Q 2 Fourth switching tube Q 4 Closing the first switch tube Q 1 On, third switch tube Q 3 A second capacitor C operating in the variable resistance region and gradually conducting 2 To the first capacitor C 1 Natural discharge, realizing power-down maintenance of bus voltage until the second capacitor C 2 Voltage of (2) and first capacitance C 1 Wherein the third switching tube Q 3 Third switch tube Q in gradual conduction process 3 Operating in the variable resistive region to limit the second capacitance C 2 Is in a controllable range.
Referring to FIG. 6, FIG. 6 is an equivalent circuit diagram of a normal discharge phase in a power down mode, in which the third switching transistor Q 3 Gradually conducting to play a certain role of slow start, and the second capacitor C 2 To the first capacitor C 1 Step-up discharge, i.e. second capacitance C 2 The energy stored in the capacitor is directed to the first capacitor C 1 Until the second capacitance C 2 Voltage of (2) and first capacitance C 1 Is equal to the voltage of the first capacitor C 1 And (5) the purpose of power failure and maintenance is achieved. At the moment of switching the circuit current flow direction, inductance L is utilized 1 The characteristic that the medium current cannot be suddenly changed, the surge current of the capacitor instant discharge under high voltage difference is restrained, and the third switch tube Q 3 Slow start of the second capacitor C 2 Energy of (C) is smoothly transferred to the first capacitor C 1 This can achieve the above effects even if the discharge circuit and the surge absorbing circuit are not provided.
Further, in this embodiment, when the server is in the power-down mode, the second capacitor C 2 Discharge to and with the first capacitor C 1 In the case of equal voltages, the power-down maintenance of the bus voltage cannot be continued, so in this embodiment, a reverse BOOST circuit is designed to continue to press the second capacitor C 2 In particular, a fourth switching tube Q 4 Closing the third switch tube Q 3 On, first switch tube Q 1 Second switch tube Q 2 Inductance L 1 The reverse BOOST circuit is formed as shown in FIG. 5, FIG. 5 is an equivalent circuit diagram of BOOST discharging stage in power-down modeIn the figure, the arrow is the inductance L 1 A second capacitor C with low voltage 2 Through inductance L 1 First capacitor C continuing to flow to high voltage 1 I.e. second capacitor C 2 Continuing to the first capacitor C 1 The power-down maintaining device provided by the embodiment can discharge more energy and delay the power-down maintaining time under the same energy storage voltage compared with the traditional power-down maintaining device and the energy storage capacitor with the same capacity.
It should be noted that, when the server is in the power-down mode, the power-down holding device provided in this embodiment passes through two discharge phases in succession, where the first phase is a normal discharge phase, that is, the high-voltage second capacitor C 2 Stably to the first capacitor C 1 Discharging until the second capacitance C 2 Voltage of (2) and first capacitance C 1 The second stage is the BOOST reverse BOOST discharge stage, i.e. the second capacitor C 2 Continuing to the first capacitor C 1 Discharging until the second capacitance C 2 The stored energy is exhausted, and the server is down, so that the embodiment can release more energy in the power-down mode, and delay the power-down holding time.
In some embodiments, the power-down holding device further includes a controller 30 and a voltage monitoring module, wherein the voltage monitoring module includes a first voltage monitoring unit 401 and a second voltage monitoring unit 402.
A first voltage monitoring unit 401 for monitoring the first capacitance C 1 A second voltage monitoring unit 402 for monitoring the second capacitance C 2 A controller 30 for based on the first capacitance C 1 Voltage of (2) and second capacitance C 2 Sends corresponding control instructions to the circuit operation mode control module 10 to enable the circuit operation mode control module 10 to control the first switch tube Q 1 Second switch tube Q 2 Third switch tube Q 3 Fourth switching tube Q 4 On or off.
In this embodiment, in order to realize accurate control, a controller 30, a first voltage monitoring unit 401 and a second voltage monitoring unit are addedWhen the server is in the power-on mode, the controller 30 firstly initializes the power-down maintaining device, i.e. the first voltage monitoring unit 401 monitors the first capacitor C 1 The second voltage monitoring unit 402 monitors the second capacitance C 2 At this time, a first capacitor C 1 And a second capacitor C 2 The first control command is sent to the circuit operation mode control module 10 to make the circuit operation mode control module 10 control the first switch tube Q 1 Third switching tube Q 3 Conducting, second switch tube Q 2 Fourth switching tube Q 4 When the first capacitor C 1 And a second capacitor C 2 The voltage of the voltage (V) reaches the rated voltage of the bus and sends a second control instruction to the circuit working mode control module 10 so that the circuit working mode control module 10 controls the first switch tube Q 1 Conducting, second switch tube Q 2 Third switch tube Q 3 Fourth switching tube Q 4 Closing until the second capacitance C 2 And continuing to boost and charge until the voltage reaches the target energy storage voltage.
The controller 30 is further configured to, when detecting that the power-up of the server is completed and in a normal operating state, receive the first capacitor C sent by the first voltage monitoring unit 401 1 When the voltage at two ends is powered down and reaches the information of the power-down threshold value, a third control instruction is sent to the circuit working mode control module 10, so that the circuit working mode control module 10 controls the second switch tube Q 2 Fourth switching tube Q 4 Closing the first switch tube Q 1 On, third switch tube Q 3 Gradually turn on until the second capacitor C 2 Voltage of (2) and first capacitance C 1 Sends a fourth control command to the circuit operation mode control module 10 to control the fourth switching tube Q by the circuit operation mode control module 10 4 Closing the first switch tube Q 1 Second switch tube Q 2 Third switching tube Q 3 And conducting until the server is down.
In yet another aspect, the present application further provides a server, which includes the power-down holding device provided in the above embodiment.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A power-down holding device provided in a server, comprising: the circuit working mode control module and the bidirectional synchronous rectification BOOST circuit module comprise a bus input circuit unit, a bidirectional BOOST circuit and a high-voltage energy storage circuit unit;
the circuit working mode control module is used for controlling the second capacitor to continuously BOOST and charge until the voltage reaches a target energy storage voltage through the bidirectional BOOST circuit under the condition that the voltage of the first capacitor of the bus input circuit unit and the voltage of the second capacitor of the high-voltage energy storage circuit unit are boosted and charged together until the voltage reaches the bus rated voltage after the server is powered on, wherein the target energy storage voltage is higher than the bus rated voltage;
the circuit working mode control module is further configured to, when the server is in a power-down mode, BOOST-discharge the second capacitor to the first capacitor until the voltage of the second capacitor is equal to the voltage of the first capacitor, and control the second capacitor to continue to BOOST-discharge to the first capacitor through the bidirectional BOOST circuit until the server is down.
2. The power down holding device of claim 1, wherein the bidirectional BOOST circuit comprises a first switching tube, a second switching tube, a third switching tube, and a fourth switching tube;
the drain electrode of the first switching tube is connected with the positive electrode of the first capacitor, the source electrode of the second switching tube is connected with the negative electrode of the first capacitor, the source electrode of the third switching tube is connected with the positive electrode of the second capacitor, the drain electrode of the fourth switching tube is connected with the negative electrode of the second capacitor, the source electrode of the first switching tube is connected with the drain electrode of the second switching tube with one end of the inductor, and the source electrode of the third switching tube is connected with the drain electrode of the fourth switching tube with the other end of the inductor.
3. The power failure holding device according to claim 2, wherein a signal output end of the circuit operation mode control module is connected with a gate of the first switching tube, a gate of the second switching tube, a gate of the third switching tube and a gate of the fourth switching tube;
the circuit working mode control module is used for controlling the first switch tube, the second switch tube, the third switch tube and the fourth switch tube to be conducted or closed so as to control the charge and discharge of the first capacitor and the second capacitor.
4. The power failure holding device according to claim 2, wherein when the server is in a power-on mode, the first switching tube and the third switching tube are turned on, the second switching tube and the fourth switching tube are turned off, the second capacitor is boosted and charged together with the first capacitor until the voltage reaches a bus rated voltage, so that the influence of the high-voltage energy storage circuit on the voltage of the input bus in the starting process of the server is reduced.
5. The power failure holding device according to claim 3, wherein after the server is powered up, the second capacitor is boosted and charged along with the first capacitor until the voltage reaches the rated voltage of the bus, the bidirectional BOOST circuit works in a forward BOOST mode, the first switch tube is turned on, the second switch tube is turned off, the inductor, the third switch tube and the fourth switch tube form the BOOST circuit, and the BOOST charging is continued for the second capacitor until the voltage of the second capacitor reaches the target energy storage voltage.
6. The power-down holding device according to claim 2, wherein when the server is in a power-down mode, the second switching tube and the fourth switching tube are turned off, the first switching tube is turned on, the third switching tube is gradually turned on, the second capacitor naturally discharges to the first capacitor, and power-down holding of a bus voltage is achieved until the voltage of the second capacitor is equal to the voltage of the first capacitor;
and the third switching tube works in a variable resistance area in the process of gradually conducting the third switching tube so as to limit the discharge current of the second capacitor within a controllable range.
7. The power-down holding device according to claim 6, wherein when the server is in a power-down mode, the second capacitor is discharged to a voltage equal to that of the first capacitor, power-down holding of a bus voltage cannot be continuously realized, the third switching tube is turned on, the fourth switching tube is turned off, the inductor, the first switching tube and the second switch Guan Guanzu Cheng Fanxiang BOOST circuit are turned on, and the second capacitor is continuously discharged to BOOST voltage to the first capacitor until the server is down.
8. The power down holding device according to any one of claims 1 to 7, further comprising a voltage monitoring module including a first voltage monitoring unit and a second voltage monitoring unit;
the first voltage monitoring unit is used for monitoring the voltage of the first capacitor;
the second voltage monitoring unit is used for monitoring the voltage of the second capacitor.
9. The power down retaining apparatus of claim 8, wherein the power down retaining apparatus further comprises a controller;
the controller is used for sending corresponding control instructions to the circuit working mode control module based on the voltage of the first capacitor and the voltage of the second capacitor, so that the circuit working mode control module controls the first switching tube, the second switching tube, the third switching tube and the fourth switching tube to be conducted or closed.
10. A server comprising a power loss holding device according to any one of claims 1 to 9.
CN202310080324.XA 2023-02-02 2023-02-02 Power failure maintaining device and server Pending CN116243777A (en)

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Application Number Priority Date Filing Date Title
CN202310080324.XA CN116243777A (en) 2023-02-02 2023-02-02 Power failure maintaining device and server

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CN202310080324.XA Pending CN116243777A (en) 2023-02-02 2023-02-02 Power failure maintaining device and server

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116909376A (en) * 2023-09-11 2023-10-20 苏州浪潮智能科技有限公司 Server power supply circuit and control method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116909376A (en) * 2023-09-11 2023-10-20 苏州浪潮智能科技有限公司 Server power supply circuit and control method thereof
CN116909376B (en) * 2023-09-11 2024-03-08 苏州浪潮智能科技有限公司 Server power supply circuit and control method thereof

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