WO2022000340A1 - 一种电源供电系统和ict设备 - Google Patents

一种电源供电系统和ict设备 Download PDF

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Publication number
WO2022000340A1
WO2022000340A1 PCT/CN2020/099575 CN2020099575W WO2022000340A1 WO 2022000340 A1 WO2022000340 A1 WO 2022000340A1 CN 2020099575 W CN2020099575 W CN 2020099575W WO 2022000340 A1 WO2022000340 A1 WO 2022000340A1
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WO
WIPO (PCT)
Prior art keywords
voltage
power supply
voltage conversion
conversion unit
supply system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/099575
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English (en)
French (fr)
Inventor
韩君伟
张中枢
昝磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Digital Power Technologies Co Ltd
Original Assignee
Huawei Digital Power Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Digital Power Technologies Co Ltd filed Critical Huawei Digital Power Technologies Co Ltd
Priority to CN202080006965.5A priority Critical patent/CN114128123B/zh
Priority to EP20943236.8A priority patent/EP4167458A4/en
Priority to JP2022581392A priority patent/JP2023531558A/ja
Priority to PCT/CN2020/099575 priority patent/WO2022000340A1/zh
Publication of WO2022000340A1 publication Critical patent/WO2022000340A1/zh
Priority to US18/148,055 priority patent/US12021453B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/20—Cooling means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/007—Plural converter units in cascade
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/06—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider
    • H02M3/07—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33523—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/209—Heat transfer by conduction from internal heat source to heat radiating structure

Definitions

  • the present application relates to the field of power supplies, and in particular, to a power supply system and information and communications technology (information and communications technology, ICT) equipment.
  • ICT information and communications technology
  • the present application provides a power supply system, which can improve the power supply efficiency of the power supply to a service single board (or a circuit board, a processing board, a main board, etc.) in an ICT device.
  • the present application provides a power supply system for supplying power to at least one load module on a service board.
  • the power supply system includes: a first voltage conversion unit and a second voltage conversion unit.
  • the first voltage conversion unit is an isolated voltage conversion unit, the first voltage conversion unit is connected to the power supply, and is used to convert the voltage of the power supply into a first voltage, where the first voltage is the power supply voltage of the service board.
  • the second voltage conversion unit is a non-isolated voltage conversion unit, and the second voltage conversion unit is deployed on the service board.
  • the second voltage conversion unit is connected to the first voltage conversion unit, and is used for converting the first voltage into a second voltage, where the second voltage is the power supply voltage of the first load module on the service board.
  • the on-board power supply on the service single board adopts a non-isolated voltage conversion unit, thus improving the voltage conversion efficiency of the on-board power supply. Further, since the height of the circuit of the non-isolated on-board power supply is low, the on-board power supply and load module on the service board can adopt the whole-board heat dissipation, thereby improving the heat dissipation efficiency of the service board.
  • the above-mentioned second voltage conversion unit includes a field effect transistor and a capacitor.
  • the non-isolated step-down of the second voltage conversion unit is realized, and the voltage conversion efficiency is improved.
  • the above-mentioned first voltage is greater than 12V.
  • the above-mentioned first load module is an optical module.
  • the above-mentioned power supply system further includes: a third voltage conversion unit and a fourth voltage conversion unit.
  • the third voltage conversion unit is a non-isolated voltage conversion unit
  • the third voltage conversion unit is deployed on the service board
  • the third voltage conversion unit is connected to the first voltage conversion unit, and is used for converting the above-mentioned first voltage is the third voltage.
  • the fourth voltage conversion unit is a non-isolated voltage conversion unit, the fourth voltage conversion unit is deployed on the service single board, the fourth voltage conversion unit is connected with the third voltage conversion unit, and is used for converting the third voltage into the fourth voltage
  • the fourth voltage is the power supply voltage of the second load module on the service board.
  • the power of the second load module is less than or equal to a preset threshold.
  • the above-mentioned second load module is a low-power load.
  • the voltage difference between the input voltage and the output voltage of the third voltage conversion unit can be reduced, and the fourth voltage can be reduced
  • the voltage difference of the conversion unit can be reduced, thereby reducing the parameter requirements for the circuit elements in the on-board power supply, thereby saving costs (the higher the parameter requirements of the circuit elements, the higher the production cost).
  • the parameters of the circuit elements may be, for example, the input voltage and the output voltage of the circuit elements.
  • the above-mentioned second voltage conversion unit and the first load module dissipate heat through a whole-plate radiator, and the whole-plate radiator covers the second voltage conversion unit and the first load module.
  • Using the whole board radiator to dissipate heat for the second voltage conversion unit and the load module can effectively reduce the distance between the second voltage conversion unit and the load module, thereby reducing the line loss, thereby improving the power supply of the power supply system for the load module. efficient.
  • the value range of the above-mentioned first voltage includes 24V-60V.
  • the value of the above-mentioned first voltage is 48V or 53.5V.
  • the present application further provides an ICT device, where the ICT device includes the power supply system provided by any one of the above-mentioned first aspect and any possible implementation manners thereof.
  • the power supply system is used to supply power to the service single board in the ICT device.
  • FIG. 1 is a schematic diagram 1 of a power supply system provided by an embodiment of the present application.
  • FIG. 2 is a second schematic diagram of a power supply system provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram 3 of a power supply system provided by an embodiment of the present application.
  • FIG. 4 is a fourth schematic diagram of a power supply system provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram 1 of a power supply system providing power to a service board according to an embodiment of the present application
  • FIG. 6 is a schematic diagram of an implementation circuit of a second voltage conversion unit provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram 5 of a power supply system provided by an embodiment of the present application.
  • FIG. 8 is a second schematic diagram of the power supply system providing power to a service board according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram 3 of the power supply system providing power to a service single board according to an embodiment of the present application.
  • FIG. 10 is a schematic diagram of supplying power to a service single board in a practical application by the power supply system provided by the embodiment of the present application;
  • FIG. 11 is a schematic diagram of heat dissipation of an on-board power supply and a load module provided by an embodiment of the present application.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as “exemplary” or “such as” should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as “exemplary” or “such as” is intended to present the related concepts in a specific manner.
  • first and second are only used for description purposes, and cannot be understood as indicating or implying relative importance or implying the number of indicated technical features.
  • a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plural means two or more.
  • the meaning of the term “at least one” refers to one or more, and the meaning of the term “plurality” in this application refers to two or more.
  • a plurality of second messages refers to two or more more than one second message.
  • system and “network” are often used interchangeably herein.
  • the ICT equipment includes service boards used to implement various service functions.
  • the embodiment of the present application provides a power supply system, which can improve the power supply efficiency of the power supply to a service board in an ICT device.
  • the circuit part deployed on the service board in the power supply system is small in size and low in height, the space utilization rate of the service board is improved, that is, the capacity of the service board is effectively increased. In this way, the power supply system can meet the evolution requirements of large-capacity service boards.
  • FIG. 1 shows a power supply system 10 provided by an embodiment of the present application.
  • the power supply system 10 is used to supply power to at least one service board in the above-mentioned ICT equipment.
  • one service single board may include at least one load module.
  • the power supply system 10 is connected to an external power supply 101 , and the power supply system 10 includes a first voltage conversion unit 102 and a second voltage conversion unit 103 .
  • the direction of the arrow shown in FIG. 1 represents the flow of the current.
  • the power supply 101 may be the power supply of the equipment room where the ICT equipment is located.
  • the power supply 101 may be at least one of an alternating current (alternating current, AC) power supply, a high voltage direct current (HVDC) power supply or a low voltage direct current (LVDC) power supply.
  • alternating current alternating current
  • HVDC high voltage direct current
  • LVDC low voltage direct current
  • the voltage range of the AC power supply may be 100 ⁇ 240 Vac
  • the voltage range of the HVDC power supply may be 240 ⁇ 480 Vdc
  • the voltage range of the LVDC power supply may be 40 ⁇ 70 Vdc.
  • the first voltage conversion unit 102 is an isolated voltage conversion unit.
  • the first voltage conversion unit 102 can implement isolated voltage conversion by using a magnetically isolated transformer.
  • the first voltage conversion unit 102 may be a coil-type transformer.
  • the first voltage conversion unit 102 may be connected to the power supply 101 and used to convert the voltage of the power supply 101 into the first voltage.
  • the first voltage is a bus voltage used to supply power to the service board.
  • the first voltage is generally a voltage greater than 12V.
  • the first voltage is lower than the voltage of the power supply 101 .
  • the first voltage may be lower than the voltage of the power supply 101 or higher than the voltage of the power supply 101 , which is not limited.
  • the value range of the first voltage may be between 24V and 60V, which is of course not limited thereto.
  • the first voltage may be a common 48V voltage or a 53.5V voltage, and of course, the first voltage may also be a 61V voltage.
  • the first voltage conversion unit 102 may be a power supply module (power supply uint, PSU) of an ICT device, so as to provide a bus voltage (ie, the first voltage) for the service board. It is understood that in one ICT device, at least one PSU may be included. That is, at least one first voltage conversion unit 102 may be included in one ICT device.
  • PSU power supply uint
  • the first voltage conversion unit 102 is a direct current-direct current (DC-DC) voltage conversion circuit, that is, the input voltage of the first voltage conversion unit 102 is a DC voltage, and the first output voltage is a DC voltage. Voltage is also DC voltage.
  • DC-DC direct current-direct current
  • the first voltage conversion unit 102 includes an AC/DC rectification module 1021 and a voltage conversion module 1022 .
  • the AC/DC rectifier module 1021 is connected to the power supply 101 and is used to convert the alternating current of the power supply 101 into direct current.
  • the AC/DC rectifier module 1021 is also connected to the voltage conversion module 1022 . In this way, the voltage conversion module 1022 can convert the DC voltage rectified and output by the AC/DC rectification module 1021 into the first voltage.
  • the voltage conversion module 1022 is an isolated voltage conversion module, and the voltage conversion module 1022 can implement isolated voltage conversion by using a magnetically isolated transformer.
  • the voltage conversion module 1022 may be a coil-type transformer.
  • the second voltage conversion unit 103 is a non-isolated voltage conversion unit.
  • the second voltage conversion unit 103 can implement non-isolated voltage conversion by using a non-isolated circuit including switching devices and capacitors. Wherein, the second voltage conversion unit 103 is deployed on the service board.
  • the second voltage conversion unit 103 may be connected to the first voltage conversion unit 102 and configured to convert the first voltage output by the first voltage conversion unit 102 into the second voltage.
  • the second voltage is a voltage used to supply power to the first load module on the service board.
  • the first load module is any one of the at least one load module on the service board.
  • the first load module may generally be an optical module on a service board.
  • the second voltage is generally smaller than the first voltage. That is, the second voltage conversion unit 103 is a circuit unit for step-down.
  • the second voltage conversion unit 103 may be connected to the first voltage conversion unit 102 through the backplane.
  • the first voltage conversion unit 102 is connected to the backplane 104 and transmits the outputted first voltage to the backplane 104 .
  • the second voltage conversion unit 103 is connected to the backplane 104, and can obtain the first voltage from the backplane 104, and then convert the first voltage into the power supply voltage required by the first load module on the service board (ie, the second voltage Voltage).
  • the number of the first conversion units 102 is m
  • the number of the second voltage conversion units 103 is n.
  • m and n are integers greater than 1, respectively.
  • the n second voltage conversion units 103 may be n second voltage conversion units 103 deployed on the same service board, or may be n second voltage conversion units deployed on multiple service boards 103, which is not limited.
  • the backplane 104 can be used to provide the m first voltages output by the m first conversion units 102 to the n second voltage conversion units 103 in a balanced manner, so as to achieve balanced power supply for the load modules.
  • the backplane 104 may also supply power to multiple load modules in an unbalanced manner, which is not limited in this application.
  • the power supply system 10 shown in FIG. 4 includes m first voltage conversion units, which are respectively a first voltage conversion unit 1 , a first voltage conversion unit 2 , . . . , and a first voltage conversion unit 1 .
  • Voltage conversion unit m The m first voltage conversion units convert the voltages of the power supply 101 into m first voltages and output them to the backplane 104 .
  • the power supply system 10 shown in FIG. 4 further includes n second voltage conversion units, which are respectively a second voltage conversion unit 1 , a second voltage conversion unit 2 , . . . , and a second voltage conversion unit n.
  • the backplane 104 may provide the m first voltages output by the m first voltage conversion units to the n second voltage conversion units in a balanced manner according to the numbers of the first voltage conversion units and the second voltage conversion units unit, so as to achieve balanced power supply to the load modules respectively connected to the n second voltage conversion units.
  • the direction of the arrow shown in FIG. 3 represents the flow of the current.
  • the n second voltage conversion units shown in FIG. 4 may be used to provide supply voltages for the n first load modules.
  • the n second voltage conversion units are in one-to-one correspondence with the n first load modules. In this way, even if the second voltage conversion unit that supplies power to a certain first load module fails, the normal operation of other load modules will not be affected.
  • the n second voltage conversion units shown in FIG. 4 may be used to provide the supply voltage for the s first load modules.
  • s is an integer less than n. That is, in the power supply system 10, one load module can be powered by two or more than two second voltage conversion units. This embodiment of the present application does not limit this.
  • the power of the first load module is less than or equal to the output power of the second voltage conversion unit connected to the first load module.
  • n second voltage conversion units are used to provide supply voltages for n first load modules, that is, n second voltage conversion units correspond to n first load modules one-to-one. Take an example to illustrate.
  • the service board 105 including n first load modules includes n first load modules, which are respectively a first load module 1 , a first load module 2 , . . . and a first load module n.
  • the n first load modules may be respectively provided with power supply voltages (ie, second voltages) by n second voltage conversion units in the power supply system 10 .
  • power supply voltages ie, second voltages
  • the second voltage conversion unit 1 is connected to the first load module 1 , and the second voltage conversion unit 1 is used to convert the first voltage extracted from the backplane 104 into a second voltage 1 , the second voltage 1 That is, the power supply voltage of the first load module 1, the second voltage conversion unit 2 is connected to the first load module 2, and the second voltage conversion unit 1 is used to convert the first voltage extracted from the backplane 104 to the second voltage 2,
  • the second voltage 2 is the power supply voltage of the first load module 2
  • the second voltage conversion unit n is connected to the first load module n
  • the second voltage conversion unit 1 is used for converting the first voltage extracted from the backplane 104 to
  • the second voltage n is the power supply voltage of the first load module n, and the like.
  • FIG. 6 shows an implementation circuit of the second voltage conversion unit 103 .
  • the circuit includes 8 field effect transistors, which are field effect transistors Q1 to field effect transistors Q8 respectively.
  • the circuit also includes three capacitors, namely capacitor C1 to capacitor C3.
  • Q1, Q3, Q5 and Q8 can be used as a group of switch units, that is, switch unit group 1.
  • Q2, Q4, Q6 and Q7 serve as the second group of switch units, namely switch unit group 2.
  • the on-time ratio of the switch unit group 1 and the switch unit group 2 is realized to be 1:1. It should be noted that when the switch unit group 1 is turned on, the switch unit group 2 is turned off; when the switch unit group 2 is turned on, the switch unit group 1 is turned off.
  • the switch unit group 1 when the switch unit group 1 is turned on, that is, Q1, Q3, Q5 and Q8 are turned on. At this time, the switch unit group 2 is turned off, that is, Q2, Q4, Q6 and Q7 are turned off.
  • the circuit shown in (a) of FIG. 6 can be represented as the circuit shown in (b) of FIG. 6 .
  • Vin is the input voltage (ie, the first voltage).
  • the direction of the arrow shown in (b) in FIG. 6 is the current flow.
  • the switch unit group 2 When the switch unit group 2 is turned on, that is, Q2, Q4, Q6 and Q7 are turned on. At this time, the switch unit group 1 is turned off, that is, Q1, Q3, Q5 and Q8 are turned off.
  • the circuit shown in (a) of FIG. 6 can be represented as the circuit shown in (c) of FIG. 6 .
  • the currents in the circuit shown in (c) of FIG. 6 are the discharge currents of the capacitor C1 , the capacitor C2 and the capacitor C3 .
  • the direction of the arrow shown in (c) in FIG. 6 is the current flow.
  • the solution provided by the embodiment of the present application can improve the voltage conversion efficiency to 98.5%.
  • the second voltage conversion unit 103 deployed on the service board may be referred to as an on-board power supply in the power supply system 10 .
  • the on-board power supply in the power supply system 10 uses a non-isolated voltage conversion circuit. Therefore, compared with the use of an isolated voltage conversion circuit in the on-board power supply (that is, the voltage conversion unit deployed on the service board in the prior art) in the prior art, the solutions provided by the embodiments of the present application can effectively improve the voltage conversion efficiency, Thus, the efficiency of the power supply for supplying power to the load module is improved.
  • the power supply system 10 provided by the embodiments of the present application further includes a third voltage conversion unit and a fourth voltage conversion unit.
  • the power supply system 10 shown in FIG. 7 further includes a third voltage conversion unit 701 and a fourth voltage conversion unit 702 .
  • the third voltage conversion unit 701 and the fourth voltage conversion unit 702 can jointly serve as the on-board power supply in the power supply system 10, and are used to supply power to the load module on the service board.
  • the third voltage conversion unit 701 and the fourth voltage conversion unit 702 may jointly serve as an on-board power supply in the power supply system 10 for supplying power to the second load module.
  • the second load module is any load module on the service board.
  • the power of the second load module is less than or equal to a preset threshold. The value of the preset threshold is not limited in this embodiment of the present application.
  • the second load module may be a low-power load on the service board.
  • the third voltage conversion unit 701 is connected to the first voltage conversion unit 102 through the backplane 104, and is used to convert the first voltage output by the first voltage conversion unit 102 into the third voltage.
  • the third voltage can be used as the intermediate bus voltage on the service board.
  • the third voltage may typically be a commonly used 12V voltage.
  • the third voltage is generally smaller than the first voltage. That is, the third voltage conversion unit 701 is a circuit unit for step-down.
  • the third voltage conversion unit 701 may be a non-isolated voltage conversion unit.
  • the third voltage conversion unit 701 reference may be made to the description of the second voltage conversion unit 103, which will not be repeated here.
  • the third voltage conversion unit 701 may also be a traditional isolated intermediate bus converter (intermediate bus converter, IBC). I won't go into details here.
  • IBC intermediate bus converter
  • the fourth voltage conversion unit 702 is connected to the third voltage conversion unit 701 and is used for converting the third voltage output by the third voltage conversion unit 701 into a fourth voltage.
  • the fourth voltage is the power supply voltage of the load module (eg, the second load module).
  • the fourth voltage is generally smaller than the third voltage. That is, the fourth voltage conversion unit 702 is a circuit unit for step-down.
  • the fourth voltage conversion unit 702 may be a non-isolated point-of-load (POL) voltage conversion unit, which is not repeated for comparison.
  • POL point-of-load
  • the third voltage output by the third voltage conversion unit 701 can be used as the input voltage of at least one fourth voltage conversion unit 702 to supply power for at least one second load module.
  • the at least one fourth voltage conversion unit 702 corresponds to the at least one second load module one-to-one.
  • the output power of the third voltage conversion unit 701 is greater than or equal to the power sum of the at least one second load module.
  • the service board 105 includes n load modules.
  • the j first load modules include first load modules 1, . . . , and first load modules j.
  • the k second load modules include second load modules 1, . . . , and second load module k.
  • the j second voltage conversion units are respectively connected to the j first load modules, and supply power to the j first load modules respectively.
  • the j second voltage conversion units supplying power to the j first load modules respectively, reference may be made to the description in FIG. 5 , which will not be repeated here.
  • the third voltage conversion unit 701 is connected to the backplane, and converts the first voltage output by the first voltage conversion unit 102 into a third voltage.
  • the third voltage conversion unit 701 is also connected to k fourth voltage conversion units, and the k fourth voltage conversion units respectively convert the third voltages output by the third voltage conversion unit 701 into k fourth voltages.
  • the fourth voltage is the power supply voltage of the k second load modules.
  • the k fourth voltage conversion units include fourth voltage conversion units 1, . . . , and fourth voltage conversion units k.
  • the fourth voltage conversion unit 1 is configured to convert the third voltage output by the third voltage conversion unit 701 into a fourth voltage 1 , which is the power supply voltage of the second load module 1 .
  • the fourth voltage conversion unit k converts the third voltage output by the third voltage conversion unit 701 into a fourth voltage k, which is the power supply voltage of the second load module k.
  • the power sum of the k second load modules is less than or equal to the output power of the third voltage conversion unit 701 . If the power sum of the k second load modules is greater than the output power of the third voltage conversion unit 701 , the number of the third voltage conversion units 701 may be increased to achieve power supply for the k second load modules.
  • the power supply system 10 shown in FIG. 9 includes two third voltage conversion units, which are a third voltage conversion unit 1 and a third power conversion unit 2 respectively.
  • the power supply system 10 further includes k fourth voltage conversion units and k second load modules.
  • the third voltage conversion unit 1 is connected to p fourth voltage conversion units, and the output voltages of the p fourth voltage conversion units are the power supply voltages of the p second load modules, where p is a positive integer, and p is less than k .
  • the output power of the third voltage conversion unit 1 is greater than or equal to the power sum of the p second load modules.
  • the p fourth voltage conversion units include fourth voltage conversion units 1 , . . . , and fourth voltage conversion units p.
  • the p second load modules include second load modules 1, . . . , second load modules p.
  • the fourth voltage conversion unit 1 is used to convert the third voltage output by the third voltage conversion unit 1 into a fourth voltage 1 , which is the power supply voltage of the second load module 1 .
  • the fourth voltage conversion unit p is used to convert the third voltage output by the third voltage conversion unit 1 into a fourth voltage p, and the fourth voltage p is the power supply voltage of the second load module p.
  • the third voltage conversion unit 2 is connected to (k-p) fourth voltage conversion units, and supplies power to (k-p) second load modules.
  • the output power of the third voltage conversion unit 2 is greater than or equal to the power sum of the (k-p) second load modules.
  • the (k ⁇ p) fourth voltage conversion units include fourth voltage conversion units (p+1), . . . , fourth voltage conversion units k.
  • the (k-p) second load modules include second load modules (p+1), . . . , second load modules k.
  • the fourth voltage conversion unit (p+1) is used to convert the third voltage output by the third voltage conversion unit 2 into a fourth voltage (p+1), and the fourth voltage (p+1) is the second voltage Supply voltage of the load module (p+1).
  • the fourth voltage conversion unit k is used to convert the third voltage output by the third voltage conversion unit 1 into a fourth voltage k, which is the power supply voltage of the second load module k.
  • the voltage difference between the input voltage and the output voltage of the third voltage conversion unit can be reduced, and the voltage difference between the input voltage and the output voltage of the third voltage conversion unit can be reduced, and the The voltage difference between the four voltage conversion units can reduce the parameter requirements for the circuit elements in the on-board power supply, thereby saving costs (the higher the parameter requirements of the circuit elements, the higher the production cost).
  • the parameters of the circuit elements may be, for example, the input voltage and the output voltage of the circuit elements.
  • FIG. 10 shows a schematic diagram of the above-mentioned power supply system supplying power to load modules of n service boards in practical applications.
  • the n service boards include service boards 1, . . . , and service boards n.
  • the power supply system 100 is externally connected to a power supply 1001 .
  • a power supply 1001 For the power supply 1001 , reference may be made to the description of the power supply 101 above, which will not be repeated here.
  • the power supply system 100 includes two first voltage conversion units, namely PSU1 and PSU2, and PSU1 and PSU2 respectively use transformers to implement isolated voltage conversion.
  • PSU 1 and PSU 2 are respectively used to convert the input power of the power supply into a common 53.5V voltage (that is, the first voltage described above), and deliver them to the backplane 1002.
  • the power supply system 100 for supplying power to the four load modules on the service board 1 as an example.
  • the four load modules include optical module 1 , optical module 2 , low-power load 1 and low-power load 2 .
  • the power supply system 100 further includes two second voltage conversion units, that is, a non-isolated voltage conversion module 1 and a non-isolated voltage conversion module 2 .
  • the non-isolated voltage conversion module 1 is connected to the backplane 1002 and is used to convert the 53.5V voltage on the backplane into a power supply voltage of 3.3V for the optical module 1 .
  • the non-isolated voltage conversion module 2 is connected to the backplane 1002 and is used to convert the 53.5V voltage on the backplane into a power supply voltage of 3.3V for the optical module 2 .
  • the on-board power supplies of the optical module 1 and the optical module 2 only include one-stage voltage conversion.
  • the powers of the optical module 1 and the optical module 2 are both 3.3 ⁇ 100, that is, 330W.
  • the power supply system 100 further includes a third voltage conversion unit, that is, a non-isolated voltage conversion module 3 .
  • the power supply system 100 further includes two fourth voltage conversion units, namely POL1 and POL2.
  • the non-isolated voltage conversion module 3 is connected to the backplane 1002 and is used to convert the 53.5V voltage on the backplane into a commonly used 12V voltage.
  • the POL 1 is connected to the non-isolated voltage conversion module 3, and is used to convert the 12V voltage output by the non-isolated voltage conversion module 3 into the power supply voltage 1.0V of the low-power load 1.
  • the POL 2 is connected to the non-isolated voltage conversion module 3, and is used to convert the 12V voltage output by the non-isolated voltage conversion module 3 into the power supply voltage of 1.0V for the low-power load 2.
  • the power supply system 100 adopts two-stage voltage conversion in the on-board power supply part. In this way, the power supply solution improves the power conversion efficiency, and also reduces the cost of the components in the power supply system 100 .
  • non-isolated voltage conversion module 3 shown in FIG. 10 may be a voltage conversion unit implemented by the circuit shown in FIG. 6 or a traditional isolated IBC, which is not limited.
  • the on-board power supply formed by the second voltage conversion unit or the on-board power supply formed by the third voltage conversion unit and the fourth voltage conversion unit are both non-isolated voltage conversion circuits. Therefore, the on-board power supply in the power supply system in the embodiment of the present application has the characteristics of small size and low height.
  • the second voltage conversion unit is used as an on-board power supply, and the volume is reduced by 50% compared with the traditional on-board power supply. Therefore, the small-sized on-board power supply can increase the capacity of the service board.
  • the realization circuit of the second voltage conversion unit can achieve an ultra-thin design of less than 4 mm, on the service board, a whole-board radiator can be used for the on-board power supply (ie, the second voltage conversion unit) and the load module to dissipate heat. , thereby improving the heat dissipation efficiency of the service board.
  • the realization circuit of the on-board power supply composed of the third voltage conversion unit and the fourth voltage conversion unit has the characteristics of small size, so the capacity of the service single board can be increased.
  • the realization circuit can also achieve an ultra-thin design of less than 4mm, so the whole-board radiator can be used to dissipate heat for the on-board power supply (including the third voltage conversion unit and the fourth voltage conversion unit) and the load module, thereby improving the business.
  • the heat dissipation efficiency of the board is compared to be used to dissipate heat for the on-board power supply (including the third voltage conversion unit and the fourth voltage conversion unit) and the load module, thereby improving the business. The heat dissipation efficiency of the board.
  • the distance between the on-board power supply and the load module is less than In the prior art, the distance between the on-board power supply and the load module when the discrete heat dissipation scheme is adopted for the on-board power supply and the load module. In this way, the shorter distance between the on-board power supply and the load module can reduce the line loss between the on-board power supply and the load module, that is, the efficiency of the power supply to supply power to the load module is further improved.
  • the heat dissipation of the on-board power supply is exemplarily described by taking the on-board power supply as the second voltage conversion unit and the load module as the first load module as an example.
  • FIG. 11 schematically shows a schematic diagram in which the first load module 111 and the second voltage conversion unit 112 use the whole board to dissipate heat.
  • the service single board 110 may include a first load module 111 , a second voltage conversion unit 112 , and a printed circuit board (printed circuit board, PCB) 113 .
  • the first load module 111 and the second voltage conversion unit 112 are both disposed on the front surface of the PCB board 113 .
  • the heat sink 114 can be disposed on the side of the first load module 111 and the second voltage conversion unit 112 away from the PCB board 113 to simultaneously dissipate heat for the first load module 111 and the second voltage conversion unit 112 .
  • the second voltage conversion unit since the second voltage conversion unit is small in size and low in height, the second voltage conversion unit may also be disposed on the back of the PCB board. In this way, not only the capacity of the service board can be improved, but also when the second voltage conversion unit and the first load module are symmetrical to the PCB board, the distance between the second voltage conversion unit and the first load module can be further reduced, so that The line loss between the second voltage conversion unit and the first load module is reduced, thereby improving the efficiency of the power supply for supplying power to the load module.
  • the first load module 111 is provided on the front side of the PCB board 113
  • the second voltage conversion unit 112 is provided on the back side of the PCB board 113
  • the first load module 111 and the second voltage conversion unit 112 are symmetrical to the PCB board 113
  • the second voltage conversion unit 112 may also be offset from the symmetrical position of the first load module 111 with the PCB board 113 as the symmetrical plane.
  • the second voltage conversion unit 112 may be disposed at the position shown by the dotted frame 116 in (b) of FIG. 11 , and the comparison is not limited.
  • the heat dissipation method and the setting method of the on-board power supply are also applicable to the on-board power supply of the service board including the third voltage conversion unit and the fourth voltage conversion unit. The scene of the unit will not be repeated here.
  • the embodiments of the present application provide a power supply system, in which the on-board power supplies on the service board all use non-isolated voltage conversion units, thus improving the voltage conversion efficiency of the on-board power supplies. Because the height of the circuit of the on-board power supply is relatively low, the on-board power supply and load modules can be dissipated in the whole-board mode on the service board, thereby improving the heat dissipation efficiency of the service board.
  • the on-board power supply and the load module can adopt the whole-board heat dissipation, the distance between the load module and the on-board power supply can be closer, thereby reducing the line loss between the load module and the on-board power supply, and further improving the The power supply efficiency of the power supply to the load module is improved.
  • An embodiment of the present application further provides an ICT device, in which the load module on the service board can be powered by the power supply system shown in FIG. 1 to FIG. 10 .
  • the load modules on the service board in the ICT device may all be powered by the power supply system provided in the embodiments of the present application, or may be partially powered by the power supply system provided by the embodiments of the present application. Power supply, which is not limited in this embodiment of the present application.

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Abstract

本申请提供一种电源供电系统，涉及电源领域。该电源供电系统能够提高电源对ICT设备中业务单板的供电效率。该电源供电系统包括：第一电压转换单元，该第一电压转换单元是隔离式电压转换单元，该第一电压转换单元与供电电源连接，并用于将供电电源的电压转换为业务单板的供电电压，即第一电压；第二电压转换单元，该第二电压转换单元是非隔离式电压转换单元，该第二电压转换单元部署于业务单板上，该第二电压转换单元用于将第一电压转换为业务单板上的第一负载模块的供电电压，即第二电压。

Description

一种电源供电系统和ICT设备 技术领域
本申请涉及电源领域，尤其涉及一种电源供电系统、以及信息与通信技术(information and communications technology，ICT)设备。
背景技术
随着ICT的不断发展，更宽的带宽(band width)、更快的数据传输速率(data transfer rate)以及更短的延时，推动着ICT设备功率容量不断攀升。因此，在各种ICT设备中，电路系统的供电效率、散热以及能耗的挑战越来越严峻。
因此，如何高效地为ICT设备中的业务单板供电，是亟待解决的技术问题。
发明内容
本申请提供了一种电源供电系统，能够提高电源对ICT设备中业务单板(或者电路板，处理板，主板等)的供电效率。
本申请提供如下技术方案：
第一方面，本申请提供一种电源供电系统，该供电系统用于为业务单板上的至少一个负载模块供电。该电源供电系统包括：第一电压转换单元以及第二电压转换单元。其中，第一电压转换单元是隔离式电压转换单元，该第一电压转换单元与供电电源连接，并用于将供电电源的电压转换为第一电压，该第一电压是业务单板的供电电压。第二电压转换单元是非隔离式电压转换单元，该第二电压转换单元部署于业务单板上。该第二电压转换单元与第一电压转换单元连接，并用于将上述第一电压转换为第二电压，该第二电压是业务单板上的第一负载模块的供电电压。
本申请所提供的电源供电系统，在业务单板上的板上电源均采用非隔离式的电压转换单元，因此提高了板上电源的电压转换效率。进一步的，由于非隔离式的板上电源的电路的高度较低，因此在业务单板上，板上电源和负载模块可以采用整板式散热，从而提高了业务单板的散热效率。
在一种可能的设计方式中，上述第二电压转换单元包括场效应管和电容。通过该可能的实现方式，实现了第二电压转换单元的非隔离式的降压，并提高了电压转换效率。
在另一种可能的设计方式中，上述第一电压大于12V。
在另一种可能的设计方式中，上述第一负载模块是光模块。
在另一种可能的设计方式中，上述供电系统还包括：第三电压转换单元和第四电压转换单元。其中，第三电压转换单元是非隔离式电压转换单元，该第三电压转换单元部署于业务单板上，该第三电压转换单元与第一电压转换单元连接，并用于将上述的第一电压转换为第三电压。第四电压转换单元是非隔离式电压转换单元，该第四电压转换单元部署于业务单板上，该第四电压转换单元与第三电压转换单元连接，并用于将第三电压转换为第四电压，该第四电压是上述业务单板上的第二负载模块的供电电压。
在另一种可能的设计方式中，上述第二负载模块的功率小于或等于预设阈值。
在另一种可能的设计方式中，上述第二负载模块是小功率负载。
通过采用第三电压转换单元和第四电压转换单元构成的两级转换式的板上电源为负载模块供电，可以降低第三电压转换单元的输入电压和输出电压的压差，以及降低第四电压转换单元的压差，从而可以降低对板上电源中的电路元件的参数要求，进而节省了成本(电路元件的参数要求高，则生产成本高)。其中，电路元件的参数，例如可以是电路元件输入电压、输出电压等。
在另一种可能的设计方式中，上述的第二电压转换单元和第一负载模块通过整板式散热器散热，该整板式散热器覆盖第二电压转换单元和第一负载模块。
通过整板散热器为第二电压转换单元和负载模块散热，可以有效减少第二电压转换单元与负载模块之间的距离，从而降低了线路损耗，从而提高了电源供电系统为负载模块供电的供电效率。
在另一种可能的设计方式中，上述第一电压的取值范围包括24V～60V。
在另一种可能的设计方式中，上述第一电压的取值为48V或53.5V。
第二方面，本申请还提供一种ICT设备，该ICT设备包括如上述第一方面及其任一种的任一种可能的实现方式所提供的电源供电系统。其中，该电源供电系统用于为该ICT设备中的业务单板供电。
可以理解，第二方面所提供的ICT设备中所包括的电源供电系统的实现方式，可以参考上述第一方面及其各种实现方式的描述，第二方面所提供的ICT设备中所包括的电源供电系统所能达到的有益效果，也可以参考上述第一方面及其各种实现方式的有益效果，此处不再赘述。
在本申请中，上述电源供电系统的名字对设备或功能模块本身不构成限定，在实际实现中，这些设备或功能模块可以以其他名称出现。只要各个设备或功能模块的功能和本申请类似，属于本申请权利要求及其等同技术的范围之内。
本申请的这些方面或其他方面在以下的描述中会更加简明易懂。
附图说明
图1为本申请实施例提供的电源供电系统的示意图一；
图2为本申请实施例提供的电源供电系统的示意图二；
图3为本申请实施例提供的电源供电系统的示意图三；
图4为本申请实施例提供的电源供电系统的示意图四；
图5为本申请实施例提供的电源供电系统为业务单板供电的示意图一；
图6为本申请实施例提供的第二电压转换单元实现电路的示意图；
图7为本申请实施例提供的电源供电系统的示意图五；
图8为本申请实施例提供的电源供电系统为业务单板供电的示意图二；
图9为本申请实施例提供的电源供电系统为业务单板供电的示意图三；
图10为本申请实施例提供的电源供电系统在实际应用中为业务单板供电的示意图；
图11为本申请实施例提供的板上电源与负载模块的散热示意图。
具体实施方式
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。 本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
在本申请的实施例中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
本申请中术语“至少一个”的含义是指一个或多个，本申请中术语“多个”的含义是指两个或两个以上，例如，多个第二报文是指两个或两个以上的第二报文。本文中术语“系统”和“网络”经常可互换使用。
应理解，在本文中对各种所述示例的描述中所使用的术语只是为了描述特定示例，而并非旨在进行限制。如在对各种所述示例的描述和所附权利要求书中所使用的那样，单数形式“一个(“a”，“an”)”和“该”旨在也包括复数形式，除非上下文另外明确地指示。
还应理解，本文中所使用的术语“和/或”是指并且涵盖相关联的所列出的项目中的一个或多个项目的任何和全部可能的组合。术语“和/或”，是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中的字符“/”，一般表示前后关联对象是一种“或”的关系。
还应理解，术语“包括”(也称“includes”、“including”、“comprises”和/或“comprising”)当在本说明书中使用时指定存在所陈述的特征、整数、步骤、操作、元素、和/或部件，但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元素、部件、和/或其分组。
随着ICT技术的不断发展，具有不同功能用途的ICT设备应用而生。在ICT设备中，包括用于实现各种业务功能的业务单板。
本申请实施例提供一种电源供电系统，该电源供电系统能够提高电源对ICT设备中业务单板的供电效率。
进一步的，由于该电源供电系统中部署于业务单板上的电路部分体积小、高度低，从而提高了业务单板上的空间利用率，即有效提高了业务单板的容量。这样，该电源供电系统能够满足大容量业务单板的演进需求。
参考图1，图1示出了本申请实施例提供的电源供电系统10。电源供电系统10用于为上述ICT设备中的至少一个业务单板供电。其中，一个业务单板可以包括至少一个负载模块。如图1所示，电源供电系统10外接供电电源101，电源供电系统10包括第一电压转换单元102以及第二电压转换单元103。其中，图1中所示的箭头方向，表示电流的流向。
其中，供电电源101可以是ICT设备所在机房的电源。可选的，供电电源101可以是交流(alternating current，AC)电源，高压直流(high voltage direct current，HVDC)电源或低压直流(low voltage direct current，LVDC)电源中的至少一种。作为示例，AC电源的电压范围可以是100～240Vac，HVDC电源的电压范围可以是240～480Vdc， LVDC电源的电压范围可以是40～70Vdc。
第一电压转换单元102，是隔离式的电压转换单元。第一电压转换单元102可以通过采用磁隔离式的变压器件实现隔离式的电压转换。例如，第一电压转换单元102可以是线圈式的变压器。
具体的，第一电压转换单元102可以与供电电源101连接，并用于将供电电源101的电压转换为第一电压。其中，第一电压是用于为业务单板供电的总线电压。在本申请实施例中，第一电压通常是大于12V的电压。
可以看出，当供电电源101是AC电源或HVDC电源时，第一电压小于供电电源101的电压。当供电电源101是LVDC电源时，第一电压可以小于供电电源101的电压，也可以大于供电电源101的电压，对此不作限定。
示例性的，第一电压的取值范围可以在24V～60V之间，当然不限于此。
作为示例，第一电压可以是常用的48V电压或53.5V电压，当然，第一电压也可以是61V电压。
在实际应用中，第一电压转换单元102可以是ICT设备的电源模块(power supply uint，PSU)，从而为业务单板提供总线电压(即第一电压)。可以理解的是，在一台ICT设备中，可以包括至少一个PSU。也就是说，一台ICT设备中可以包括至少一个第一电压转换单元102。
需要说明的是，第一电压转换单元102是直流-直流(direct current-direct current，DC-DC)式的电压转换电路，即第一电压转换单元102的输入电压是直流电压，输出的第一电压也是直流电压。
可选的，若供电电源101为AC电源，则如图2所示，第一电压转换单元102包括AC/DC整流模块1021和电压转换模块1022。其中，AC/DC整流模块1021与供电电源101连接，并用于将供电电源101的交流电转换为直流电。AC/DC整流模块1021还与电压转换模块1022连接。这样，电压转换模块1022，即可将经AC/DC整流模块1021整流输出的直流电压，转换为第一电压。
其中，电压转换模块1022是隔离式的电压转换模块，电压转换模块1022可以通过采用磁隔离式的变压器件实现隔离式的电压转换。例如，电压转换模块1022可以是线圈式的变压器。
其中，图2中所示的箭头方向，表示电流的流向。
参考图1，第二电压转换单元103，是非隔离式的电压转换单元。第二电压转换单元103可以通过采用包括开关器件和电容器件的非隔离式电路，实现非隔离式的电压转换。其中，第二电压转换单元103部署于业务单板上。
具体的，第二电压转换单元103可以与第一电压转换单元102连接，并用于将第一电压转换单元102输出的第一电压，转换为第二电压。其中，第二电压是用于为业务单板上的第一负载模块供电的电压。这里，第一负载模块是业务单板上的至少一个负载模块中的任一个负载模块。
示例性的，第一负载模块通常可以是业务单板上的光模块。
可选的，第二电压通常小于第一电压。也就是说，第二电压转换单元103是用于降压的电路单元。
在实际应用中，第二电压转换单元103可以通过背板，与第一电压转换单元102连接。参考图3，第一电压转换单元102与背板104连接，并将输出的第一电压输送至背板104。第二电压转换单元103与背板104连接，并可以从背板104上取到第一电压，进而将第一电压转换为业务单板上的第一负载模块所需的供电电压(即第二电压)。
若上述第一转换单元102的数量是m，第二电压转换单元103的数量是n。这里，m和n分别是大于1的整数。其中，该n个第二电压转换单元103可以是部署于同一个业务单板上的n个第二电压转换单元103，也可以是部署于多个业务单板上的n个第二电压转换单元103，对此不作限定。在这种情况下，背板104可以用于将m个第一转换单元102输出的m个第一电压，均衡的提供给n个第二电压转换单元103，从而实现负载模块均衡供电。当然，背板104也可以非均衡的向多个负载模块供电，本申请对此不作限定。
示例性的，参考图4，图4所示出的电源供电系统10中包括m个第一电压转换单元，分别为第一电压转换单元1、第一电压转换单元2、….、以及第一电压转换单元m。该m个第一电压转换单元将供电电源101的电压转化为m个第一电压，并输出至背板104。图4所示出的电源供电系统10中还包括n个第二电压转换单元，分别为第二电压转换单元1、第二电压转换单元2、…、以及第二电压转换单元n。这种情况下，背板104可以根据第一电压转换单元和第二电压转换单元的数量，均衡的将m个第一电压转换单元输出的m个第一电压，提供给n个第二电压转换单元，从而实现均衡的向分别与n个第二电压转换单元连接的负载模块供电。其中，图3中所示的箭头方向，表示电流的流向。
在一种可能的实现方式中，图4中所示出的n个第二电压转换单元，可以用于为n个第一负载模块提供供电电压。这种情况下，n个第二电压转换单元与n个第一负载模块一一对应。这样，即使为某一个第一负载模块供电的第二电压转换单元故障，也不会影响其他负载模块的正常运行。
在另一种可能的实现方式中，图4中所示出的n个第二电压转换单元，可以用于为s个第一负载模块提供供电电压。其中，s是小于n的整数。也就是说，在电源供电系统10中，可以通过两个或两个以上的第二电压转换单元，为一个负载模块供电。本申请实施例对此不作限定。
可以理解，在上述两种实施方式中，第一负载模块的功率小于或等于与该第一负载模块连接的第二电压转换单元的输出功率。
为简单描述，本申请实施例在下文中，以n个第二电压转换单元用于为n个第一负载模块提供供电电压，即n个第二电压转换单元与n个第一负载模块一一对应为例进行说明。
示例性的，参考图5，以业务单板105包括n个第一负载模块为例进行说明。如图5所示，业务单板105包括n个第一负载模块，分别为第一负载模块1、第一负载模块2、…以及第一负载模块n。该n个第一负载模块可以由电源供电系统10中的n个第二电压转换单元分别提供供电电压(即第二电压)。如图5所示，第二电压转换单元1与第一负载模块1连接，第二电压转换单元1用于将从背板104提取的第一电 压转换为第二电压1，该第二电压1即为第一负载模块1的供电电压，第二电压转换单元2与第一负载模块2连接，第二电压转换单元1用于将从背板104提取的第一电压转换为第二电压2，该第二电压2即为第一负载模块2的供电电压，第二电压转换单元n与第一负载模块n连接，第二电压转换单元1用于将从背板104提取的第一电压转换为第二电压n，该第二电压n即为第一负载模块n的供电电压等。
作为示例，参考图6，图6示出了第二电压转换单元103的实现电路。如图6所示，该电路中包括8个场效应管，分别为场效应管Q1至场效应管Q8。该电路还包括3个电容，分别为电容C1至电容C3。
其中，Q1，Q3，Q5以及Q8可以作为1组开关单元，即开关单元组1。Q2，Q4，Q6以及Q7作为第二组开关单元，即开关单元组2。在实际应用中，通过控制开关单元组1和开关单元组2的占空比，从而实现开关单元组1和开关单元组2的导通时间比例为1:1。需要说明的是，开关单元组1导通时，开关单元组2截止；开关单元组2导通时，开关单元组1截止。
这样，当开关单元组1导通时，即Q1，Q3，Q5以及Q8导通。这时，开关单元组2截止，即Q2，Q4，Q6以及Q7截止。这种情况下，图6中的(a)所示的电路，可以表示为图6中的(b)所示的电路。这时，输出电压(即第二电压)Vo＝Vc2-Vc3，Vo＝Vin-Vc1。其中，Vin是输入电压(即第一电压)。其中，图6中的(b)所示的箭头方向即为电流流向。
当开关单元组2导通时，即Q2，Q4，Q6以及Q7导通。这时，开关单元组1截止，即Q1，Q3，Q5以及Q8截止。这种情况下，图6中的(a)所示的电路，可以表示为图6中的(c)所示的电路。这时，输出电压(即第二电压)Vo＝Vc3，Vo＝Vc1-Vc2。可以理解，这种情况下，图6中的(c)所示电路中的电流为电容C1、电容C2以及电容C3的放电电流。其中，图6中的(c)所示的箭头方向即为电流流向。
这样的话，在理想状态下(例如场效应管的导通电压为0)，当Vc3＝Vo，则Vc2＝Vo+Vc3，即Vc2＝Vo+Vo＝2Vo。进而Vc1＝Vo+Vc2，即Vc1＝Vo+2Vo＝3Vo。进而Vin＝Vo+Vc1，即Vin＝Vo+3Vo＝4Vo。即图六所示的第二电压转换单元103的实现电路实现了4:1的降压输出。
这样，通过采用第二电压转换单元103为业务单板上的负载模块供电，相比传统技术，本申请实施例提供的方案，可以将电压转换效率提高到98.5％。
可以理解，部署于业务单板上的第二电压转换单元103，可以称为电源供电系统10中的板上电源。
通过采用上述的电源供电系统10为ICT设备中的至少一个业务单板上的至少一个负载模块供电，由于电源供电系统10中的板上电源采用的是非隔离式的电压转换电路。因此，相比现有技术中板上电源(即现有技术中部署于业务单板上的电压转换单元)采用隔离式的电压转换电路，本申请实施例提供的方案能够有效提高电压转换效率，从而提高了电源为负载模块供电的效率。
可选的，在另一些实施例中，本申请实施例所提供的电源供电系统10中，还包括第三电压转换单元和第四电压转换单元。结合图1，参考图7，在图7所示的电源供电系统10中，还包括第三电压转换单元701和第四电压转换单元702。其中，第三电压 转换单元701和第四电压转换单元702可以共同作为电源供电系统10中的板上电源，并用于为业务单板上的负载模块供电。
作为示例，第三电压转换单元701和第四电压转换单元702可以共同作为电源供电系统10中的板上电源，用于为第二负载模块供电。其中，第二负载模块是该业务单板上的任一个负载模块。可选的，第二负载模块的功率小于或等于预设阈值。其中，本申请实施例对该预设阈值的取值不作限定。
示例性的，第二负载模块可以是业务单板上的小功率负载。
具体的，第三电压转换单元701，通过背板104和第一电压转换单元102相连，并用于将第一电压转换单元102输出的第一电压转换为第三电压。这里，第三电压可以作为业务单板上的中间总线电压。作为示例，第三电压通常可以为常用的12V电压。
可选的，第三电压通常小于第一电压。也即，第三电压转换单元701是用于降压的电路单元。
具体的，第三电压转换单元701可以是非隔离式的电压转换单元。有关第三电压转换单元701的其他说明，可以参考上述第二电压转换单元103的描述，这里不再赘述。
当然，第三电压转换单元701也可以是传统隔离式的中间总线转换器(intermediate bus converter，IBC)。这里不作赘述。
第四电压转换单元702，与第三电压转换单元701连接，并用于将第三电压转换单元701输出的第三电压转换为第四电压。这里，第四电压即为负载模块(例如第二负载模块)的供电电压。
可选的，第四电压通常小于第三电压。也即，第四电压转换单元702是用于降压的电路单元。
在本申请实施例中，第四电压转换单元702可以是非隔离式负载点(point-of-load，POL)电压转换单元，对比不作赘述。
可以理解的是，上述第三电压转换单元701输出的第三电压，可以作为至少一个第四电压转换单元702的输入电压，并为至少一个第二负载模块供电。其中，该至少一个第四电压转换单元702和该至少一个第二负载模块一一对应。其中，第三电压转换单元701的输出功率，大于或等于该至少一个第二负载模块的功率和。
参考图8，以业务单板105包括n个负载模块为例。其中，n个负载模块中包括j个第一负载模块和k个第二负载模块，j和k均为正整数，且n＝k+j。其中，j个第一负载模块包括第一负载模块1，…，以及第一负载模块j。k个第二负载模块包括第二负载模块1，…，以及第二负载模块k。
如图8所示，j个第二电压转换单元分别与j个第一负载模块连接，并分别为j个第一负载模块进行供电。j个第二电压转换单元分别为j个第一负载模块供电的具体描述可以参考图5中的描述，这里不再赘述。
如图8所示，第三电压转换单元701与背板连接，并将第一电压转换单元102输出的第一电压转换为第三电压。第三电压转换单元701还与k个第四电压转换单元连接，该k个第四电压转换单元，分别将第三电压转换单元701输出的第三电压，转化为k个第四电压，该k个第四电压即为k个第二负载模块的供电电压。其中，k个第 四电压转换单元包括第四电压转换单元1，…，第四电压转换单元k。如图8所示，第四电压转换单元1用于将第三电压转换单元701输出的第三电压转化为第四电压1，该第四电压1即为第二负载模块1的供电电压。第四电压转换单元k将第三电压转换单元701输出的第三电压转化为第四电压k，该第四电压k即为第二负载模块k的供电电压。
应理解，在图8所示的电源供电系统10中，k个第二负载模块的功率和，小于或等于第三电压转换单元701的输出功率。若该k个第二负载模块的功率和，大于第三电压转换单元701的输出功率，则可以通过增加第三电压转换单元701的数量，从而实现为该k个第二负载模块供电。
参考图9，图9所示的电源供电系统10包括两个第三电压转换单元，分别为第三电压转换单元1和第三电源转换单元2。电源供电系统10还包括k个第四电压转换单元和k个第二负载模块。
其中，第三电压转换单元1与p个第四电压转换单元连接，该p个第四电压转换单元的输出电压为p个第二负载模块的供电电压，其中，p是正整数，且p小于k。这里，该第三电压转换单元1的输出功率，大于或等于该p个第二负载模块的功率和。如图9所示，p个第四电压转换单元包括第四电压转换单元1，…，第四电压转换单元p。p个第二负载模块包括第二负载模块1，…，第二负载模块p。其中，第四电压转换单元1用于将第三电压转换单元1输出的第三电压转换为第四电压1，该第四电压1即为第二负载模块1的供电电压。第四电压转换单元p用于将第三电压转换单元1输出的第三电压转换为第四电压p，该第四电压p即为第二负载模块p的供电电压。
其中，第三电压转换单元2与(k-p)个第四电压转换单元连接，并为(k-p)个第二负载模块供电。这里，该第三电压转换单元2的输出功率，大于或等于该(k-p)个第二负载模块的功率和。如图9所示，(k-p)个第四电压转换单元包括第四电压转换单元(p+1)，…，第四电压转换单元k。(k-p)个第二负载模块包括第二负载模块(p+1)，…，第二负载模块k。其中，第四电压转换单元(p+1)用于将第三电压转换单元2输出的第三电压转换为第四电压(p+1)，该第四电压(p+1)即为第二负载模块(p+1)的供电电压。第四电压转换单元k用于将第三电压转换单元1输出的第三电压转换为第四电压k，该第四电压k即为第二负载模块k的供电电压。
这样，通过采用第三电压转换单元和第四电压转换单元构成的两级转换式的板上电源为负载模块供电，可以降低第三电压转换单元的输入电压和输出电压的压差，以及降低第四电压转换单元的压差，从而可以降低对板上电源中的电路元件的参数要求，进而节省了成本(电路元件的参数要求高，则生产成本高)。其中，电路元件的参数，例如可以是电路元件输入电压、输出电压等。
作为示例，请参考图10，图10示出了上述电源供电系统在实际应用中为n个业务单板的负载模块供电的示意图。如图10所示，n个业务单板包括业务单板1，…，以及业务单板n。
如图10所示，电源供电系统100外接供电电源1001，供电电源1001可以参考上文中供电电源101的描述，这里不予赘述。
如图10所示，电源供电系统100包括2个第一电压转换单元，即PSU 1和PSU2， 并且，PSU 1和PSU 2分别采用变压器实现隔离式的电压转换。PSU 1和PSU 2分别用于将供电电源的输入电源转换为常用的53.5V电压(即上文中所述的第一电压)，并输送到背板1002上。
下面以电源供电系统100为业务单板1上的4个负载模块供电为例予以描述。这里，4个负载模块包括光模块1、光模块2、小功率负载1以及小功率负载2。
具体的，如图10所示，电源供电系统100还包括2个第二电压转换单元，即非隔离电压转换模块1和非隔离电压转换模块2。其中，非隔离电压转换模块1与背板1002连接，并用于将背板上的53.5V电压，转换为光模块1的供电电压3.3V。同样的，非隔离电压转换模块2与背板1002连接，并用于将背板上的53.5V电压，转换为光模块2的供电电压3.3V。
可以看出，光模块1和光模块2的板上电源仅包括一级电压转换。其中，光模块1和光模块2的功率均为3.3×100，即330W。
如图10所示，电源供电系统100还包括1个第三电压转换单元，即非隔离电压转换模块3。电源供电系统100还包括2个第四电压转换单元，即POL 1和POL 2。其中，非隔离电压转换模块3与背板1002连接，并用于将背板上的53.5V电压，转换为常用的12V电压。然后，POL 1与非隔离电压转换模块3连接，并用于将非隔离电压转换模块3输出的12V电压转换为小功率负载1的供电电压1.0V。同样的，POL 2与非隔离电压转换模块3连接，并用于将非隔离电压转换模块3输出的12V电压转换为小功率负载2的供电电压1.0V。
可以看出，对于小功率负载，电源供电系统100在板上电源部分采用了两级电压转换。这样的话，该供电方案在提高了电源转化效率的同时，还减少了电源供电系统100中元器件的成本。
可以理解的是，图10中所示出的非隔离电压转换模块3，可以是图6所示电路实现的电压转换单元，也可以是传统的隔离式IBC，对此不作限定。
此外，由于由第二电压转换单元所构成的板上电源，或由第三电压转换单元和第四电压转换单元所构成的板上电源，均是非隔离式的电压转换电路。因此，本申请实施例中电源供电系统中的板上电源具有体积小、高度低的特点。
例如，在实际应用中，第二电压转换单元作为板上电源，相比传统的板上电源，体积减小50％。因此，小体积的板上电源可以提高业务单板的容量。另外，由于第二电压转换单元的实现电路可以做到4mm以下超薄设计，因此在业务单板上，可以采用整板式散热器为板上电源(即第二电压转换单元)和负载模块进行散热，从而提高了业务单板的散热效率。
同理，由第三电压转换单元和第四电压转换单元所构成的板上电源的实现电路，具有体积小的特点，因此能够提高业务单板的容量。同时，该实现电路也可以做到4mm以下超薄设计，因此可以采用整板式散热器为板上电源(包括第三电压转换单元和第四电压转换单元)和负载模块进行散热，从而提高了业务单板的散热效率。
可选的，由于业务单上的板上电源和负载模块采用整板式散热器进行散热，这样的话，通过采用本申请实施例所提供电源供电系统，板上电源和负载模块之间的距离，小于现有技术中板上电源和负载模块采用分立式散热的方案时板上电源和负载模块之 间的距离。这样，板上电源和负载模块之间更短的距离，能够降低板上电源和负载模块之间的线路损耗，即进一步提高了电源为负载模块供电的效率。
下面，以板上电源是第二电压转换单元，负载模块是第一负载模块为例，对板上电源的散热作示例性进行说明。
作为示例，参考图11，图11示意性的示出了第一负载模块111和第二电压转换单元112采用整板散热的示意图。其中，业务单板110可以包括第一负载模块111、第二电压转换单元112、以及印制电路板(printed circuit board，PCB)113。如图11中的(a)所示，第一负载模块111和第二电压转换单元112均设置于PCB板113的正面。这样，散热器114即可设置于第一负载模块111和第二电压转换单元112远离PCB板113的一侧，以实现同时为第一负载模块111和第二电压转换单元112散热。
可选的，由于第二电压转换单元体积小、高度低，因此，第二电压转换单元还可以设置于PCB板的背面。这样，不仅可以提高业务单板的容量，而且当第二电压转换单元与第一负载模块对称于PCB板时，能够进一步减小第二电压转换单元和第一负载模块之间的距离，这样即降低了第二电压转换单元和第一负载模块之间的线路损耗，进而提高了电源为负载模块供电的效率。
作为示例，如图11中的(b)所示，第一负载模块111设置于PCB板113的正面，第二电压转换单元112设置于PCB板113的背面。并且，第一负载模块111和第二电压转换单元112对称于PCB板113。当然，第二电压转换单元112也可以偏移于，第一负载模块111以PCB板113为对称面的对称位置。例如，第二电压转换单元112可以设置于图11中的(b)中以虚线框116所示出的位置，对比不作限定。
可以理解，图11中所示出的散热方式以及板上电源(即第二电压转换单元112)的设置方式，也适用于业务单板的板上电源包括第三电压转换单元和第四电压转换单元时的场景，这里不再赘述。
综上，本申请实施例提供了一种电源供电系统，该电源供电系统在业务单板上的板上电源均采用非隔离式的电压转换单元，因此提高了板上电源的电压转换效率。由于板上电源的电路的高度较低，因此在业务单板上，板上电源和负载模块可以采用整板式散热，从而提高了业务单板的散热效率。
进一步的，由于板上电源和负载模块可以采用整板式散热，因此负载模块和板上电源之间的距离可以更靠近，从而减少了负载模块和板上电源之间的线路损耗，进而进一步的提高了电源对负载模块的供电效率。
本申请实施例还提供一种ICT设备，该ICT设备中业务单板上的负载模块，可以采用上述图1至图10所示出的电源供电系统供电。
可以理解，在该ICT设备中，该ICT设备中的业务单板上的负载模块，可以全部采用本申请实施例提供的电源供电系统供电，也可以部分的采用本申请实施例提供的电源供电系统供电，本申请实施例对此不作限定。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (11)

  1. 一种电源供电系统，其特征在于，包括：
    第一电压转换单元；所述第一电压转换单元是隔离式电压转换单元；所述第一电压转换单元与供电电源连接，用于将所述供电电源的电压转换为第一电压；所述第一电压是业务单板的供电电压；
    第二电压转换单元；所述第二电压转换单元是非隔离式电压转换单元，用于将所述第一电压转换为第二电压；所述第二电压转换单元部署于所述业务单板上；所述第二电压为所述业务单板上的第一负载模块的供电电压。
  2. 根据权利要求1所述的电源供电系统，其特征在于，所述第二电压转换单元包括场效应管和电容。
  3. 根据权利要求1或2所述的电源供电系统，其特征在于，所述第一电压大于12V。
  4. 根据权利要求1至3中任一项所述的电源供电系统，其特征在于，所述第一负载模块包括光模块。
  5. 根据权利要求1至4中任一项所述的电源供电系统，其特征在于，所述供电系统还包括：
    第三电压转换单元；所述第三电压转换单元是非隔离式电压转换单元，用于将所述第一电压转换为第三电压；所述第三电压转换单元部署于所述业务单板上；
    第四电压转换单元；所述第四电压转换单元是非隔离式电压转换单元，用于将所述第三电压转换为第四电压；所述第四电压转换单元部署于所述业务单板上；所述第四电压为所述业务单板上的第二负载模块的供电电压。
  6. 根据权利要求5所述的电源供电系统，其特征在于，所述第二负载模块的功率小于或等于预设阈值。
  7. 根据权利要求5或6所述的电源供电系统，其特征在于，所述第二负载模块包括小功率负载。
  8. 根据权利要求1至7中任一项所述的电源供电系统，其特征在于，所述第二电压转换单元和所述第一负载模块通过整板式散热器散热，所述整板式散热器覆盖所述第二电压转换单元和所述第一负载模块。
  9. 根据权利要求1至8中任一项所述的电源供电系统，其特征在于，所述第一电压的取值范围包括24V～60V。
  10. 根据权利要求1至9中任一项所述的电源供电系统，其特征在于，所述第一电压的取值为48V或53.5V。
  11. 一种ICT设备，其特征在于，所述ICT设备包括如权利要求1-10中任一项所述的电源供电系统；其中，所述电源供电系统用于为所述ICT设备中的业务单板供电。
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