CN101853063A - Method for switching main and standby power supplies - Google Patents
Method for switching main and standby power supplies Download PDFInfo
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- CN101853063A CN101853063A CN201010162896A CN201010162896A CN101853063A CN 101853063 A CN101853063 A CN 101853063A CN 201010162896 A CN201010162896 A CN 201010162896A CN 201010162896 A CN201010162896 A CN 201010162896A CN 101853063 A CN101853063 A CN 101853063A
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000000694 effects Effects 0.000 claims description 3
- PCTMTFRHKVHKIS-BMFZQQSSSA-N (1s,3r,4e,6e,8e,10e,12e,14e,16e,18s,19r,20r,21s,25r,27r,30r,31r,33s,35r,37s,38r)-3-[(2r,3s,4s,5s,6r)-4-amino-3,5-dihydroxy-6-methyloxan-2-yl]oxy-19,25,27,30,31,33,35,37-octahydroxy-18,20,21-trimethyl-23-oxo-22,39-dioxabicyclo[33.3.1]nonatriaconta-4,6,8,10 Chemical compound C1C=C2C[C@@H](OS(O)(=O)=O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2.O[C@H]1[C@@H](N)[C@H](O)[C@@H](C)O[C@H]1O[C@H]1/C=C/C=C/C=C/C=C/C=C/C=C/C=C/[C@H](C)[C@@H](O)[C@@H](C)[C@H](C)OC(=O)C[C@H](O)C[C@H](O)CC[C@@H](O)[C@H](O)C[C@H](O)C[C@](O)(C[C@H](O)[C@H]2C(O)=O)O[C@H]2C1 PCTMTFRHKVHKIS-BMFZQQSSSA-N 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention provides a method for switching main and standby power supplies. A system comprises a main power supply, a standby power supply, switching units A, B, C and D, drive units A, B, C and D, a delay unit and a holding unit, wherein the switching units A, B, C and D which are arranged on input and output power supply circuits of the power supplies are controlled according to state change of output voltages of the main and standby power supplies, and when the main power supply goes wrong, electric power supply is automatically switched to the standby power supply to ensure that power is continuously supplied to the system; and meanwhile, the power supply with faults is completely disconnected with the input power supply and an output load to avoid occurrence of a secondary fault. In the system, the main power supply is used as a main power supply unit of the power supply system to supply the electric power to all functional modules; the standby power supply is used as the main power supply unit of the power supply system to supply the electric power to all the functional modules when the main power supply goes wrong; the switching units A, B, C and D are arranged in the input and output power supply circuits of the main and standby power supplies and responsible for connection and disconnection of input and output power supply paths of the power supplies; the drive units A, B, C and D are responsible for driving the connection and disconnection of the switching units; the delay unit is responsible for delaying output state information of the standby power supply; and the holding unit is responsible for supplying the electric power to the load when the main and standby power supplies are switched to prevent power failure.
Description
Technical field
The present invention relates to a kind of computer power supply design field, specifically a kind of method for switching main and standby power supplies.
Background technology
Power-supply system is the power supply core of equipment, the required electric energy of the normal operation of each functional module in the equipment is provided, in high-end devices, power-supply system uninterrupted power supply ability there is very high requirement, therefore in power system design, often to consider the redundancy backup design of power supply, improve power-supply system uninterrupted power supply ability.
At above problem, the present invention proposes method for switching main and standby power supplies, utilizes the state variation of main power supply output voltage, the switch element of control setting on power supply input and output loop, when primary power breaks down, can automatically switch to backup battery, guarantee system's continued power.Simultaneously, trouble power and input power supply source and output load thoroughly can be disconnected, avoid the generation of secondary failure.
Summary of the invention
The purpose of this invention is to provide a kind of method for switching main and standby power supplies.
The objective of the invention is to realize in the following manner, system comprises: primary power, backup battery, switch element ABCD, driver element A, B, C, D, delay cell and holding unit, utilize the state variation of main power supply output voltage, switch element A, B, C, the D of control setting on power supply input and output current supply circuit is when primary power breaks down, automatically switch to backup battery, guarantee system's continued power; Simultaneously, trouble power and input power supply source and output load are thoroughly disconnected, avoid the generation of secondary failure, wherein:
Primary power: as the main power supply unit of power-supply system, for each functional module of system provides electric energy;
Backup battery: after primary power broke down, backup battery was as the main power supply unit of power-supply system, for each functional module of system provides electric energy;
Switch element A, B, C, D: be arranged in primary power and the backup battery input and output current supply circuit, be responsible for turning on and off power supply input and output supply path;
Driver element A, B, C, D: be responsible for turning on and off of driving switch unit;
Delay cell: be responsible for the output state information of backup battery is postponed;
Holding unit: be responsible for when main power supply switches, providing electric energy, prevent power down for load; Switch step is as follows: in original state, switch element A and switch element B are on-state, and switch element C and switch element D are off state.Power up to system input, because switch element A and switch element B are on-state, the input current supply circuit conducting of primary power and backup battery, the output of two power supplys is set up; Driver element A receives the primary power output state and changes information, output drive signal A, and B transfers off state to switch element; Driver element C receives primary power output state variation information simultaneously, output drive signal C, and C transfers on-state to switch element, and the primary power output loop is set up, for load provides electric energy; And because the effect of delay cell, the backup battery output state changed information before passing to driver element B and driver element D, drive signal A just turn-offs switch element B, the input current supply circuit of backup battery disconnects like this, backup battery output disappears, and drive signal B and drive signal D can not produce yet, and switch element A keeps on-state, switch element D keeps off state, and it is system's power supply that total system has only primary power;
When primary power breaks down, export to disappear, driver element A receives the primary power output state and changes information, output drive signal A, B transfers on-state to switch element; Driver element C receives primary power output state variation information simultaneously, output drive signal C, and C transfers off state to switch element, and primary power and load disconnect; Because switch element B connects, the conducting of backup battery input current supply circuit, backup battery output is set up, and the backup battery output state changes the information via delay unit and passes to driver element B and driver element D; Driver element B output drive signal B, A transfers off state to switch element, and the primary power that breaks down so just all disconnects with input power supply source and output load, thoroughly isolates from system, can not influence system's operation; Driver element D output drive signal D, D transfers on-state to switch element, and the backup battery output loop is set up, and for load provides electric energy, holding unit is responsible for providing electric energy for load when main power supply switches, and prevents power down.
The invention has the beneficial effects as follows: in power-supply system, when primary power breaks down, can automatically switch to backup battery, guarantee uninterrupted power supply; Simultaneously trouble power and input power supply and output load are thoroughly disconnected, be about to trouble power and from system, thoroughly isolate, avoid the generation of secondary failure, improve the power-supply system reliability.
Description of drawings
Accompanying drawing 1 is main power supply switching principle figure.
Embodiment
Explain below with reference to Figure of description method for switching main and standby power supplies of the present invention being done.
Method for switching main and standby power supplies of the present invention, switch step is as follows:
As shown in Figure 1, in original state, switch element A and switch element B are on-state, and switch element C and switch element D are off state.Power up to system input, because switch element A and switch element B are on-state, the input current supply circuit conducting of primary power and backup battery, the output of two power supplys is set up.Driver element A receives the primary power output state and changes information, output drive signal A, and B transfers off state to switch element; Driver element C receives primary power output state variation information simultaneously, output drive signal C, and C transfers on-state to switch element, and the primary power output loop is set up, for load provides electric energy.And because the effect of delay cell, the backup battery output state changed information before passing to driver element B and driver element D, drive signal A just turn-offs switch element B, the input current supply circuit of backup battery disconnects like this, backup battery output disappears, and drive signal B and drive signal D can not produce yet, and switch element A keeps on-state, switch element D keeps off state, and it is system's power supply that total system has only primary power.
When primary power breaks down, export to disappear, driver element A receives the primary power output state and changes information, output drive signal A, B transfers on-state to switch element; Driver element C receives primary power output state variation information simultaneously, output drive signal C, and C transfers off state to switch element, and primary power and load disconnect.Because switch element B connects, the conducting of backup battery input current supply circuit, backup battery output is set up, and the backup battery output state changes the information via delay unit and passes to driver element B and driver element D.Driver element B output drive signal B, A transfers off state to switch element, and the primary power that breaks down so just all disconnects with input power supply source and output load, thoroughly isolates from system, can not influence system's operation.Driver element D output drive signal D, D transfers on-state to switch element, and the backup battery output loop is set up, for load provides electric energy.Holding unit is responsible for providing electric energy for load when main power supply switches, and prevents power down.
Claims (1)
1. method for switching main and standby power supplies, it is characterized in that system comprises: primary power, backup battery, switch element ABCD, driver element A, B, C, D, delay cell and holding unit utilize the state variation of main power supply output voltage, switch element A, B, C, the D of control setting on power supply input and output current supply circuit, when primary power breaks down, automatically switch to backup battery, guarantee system's continued power; Simultaneously, trouble power and input power supply source and output load are thoroughly disconnected, avoid the generation of secondary failure, wherein:
Primary power: as the main power supply unit of power-supply system, for each functional module of system provides electric energy;
Backup battery: after primary power broke down, backup battery was as the main power supply unit of power-supply system, for each functional module of system provides electric energy;
Switch element A, B, C, D: be arranged in primary power and the backup battery input and output current supply circuit, be responsible for turning on and off power supply input and output supply path;
Driver element A, B, C, D: be responsible for turning on and off of driving switch unit;
Delay cell: be responsible for the output state information of backup battery is postponed;
Holding unit: be responsible for when main power supply switches, providing electric energy, prevent power down for load;
Switch step is as follows: in original state, switch element A and switch element B are on-state, and switch element C and switch element D are off state.Power up to system input, because switch element A and switch element B are on-state, the input current supply circuit conducting of primary power and backup battery, the output of two power supplys is set up; Driver element A receives the primary power output state and changes information, output drive signal A, and B transfers off state to switch element; Driver element C receives primary power output state variation information simultaneously, output drive signal C, and C transfers on-state to switch element, and the primary power output loop is set up, for load provides electric energy; And because the effect of delay cell, the backup battery output state changed information before passing to driver element B and driver element D, drive signal A just turn-offs switch element B, the input current supply circuit of backup battery disconnects like this, backup battery output disappears, and drive signal B and drive signal D can not produce yet, and switch element A keeps on-state, switch element D keeps off state, and it is system's power supply that total system has only primary power;
When primary power breaks down, export to disappear, driver element A receives the primary power output state and changes information, output drive signal A, B transfers on-state to switch element; Driver element C receives primary power output state variation information simultaneously, output drive signal C, and C transfers off state to switch element, and primary power and load disconnect; Because switch element B connects, the conducting of backup battery input current supply circuit, backup battery output is set up, and the backup battery output state changes the information via delay unit and passes to driver element B and driver element D; Driver element B output drive signal B, A transfers off state to switch element, and the primary power that breaks down so just all disconnects with input power supply source and output load, thoroughly isolates from system, can not influence system's operation; Driver element D output drive signal D, D transfers on-state to switch element, and the backup battery output loop is set up, and for load provides electric energy, holding unit is responsible for providing electric energy for load when main power supply switches, and prevents power down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010162896A CN101853063A (en) | 2010-05-05 | 2010-05-05 | Method for switching main and standby power supplies |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010162896A CN101853063A (en) | 2010-05-05 | 2010-05-05 | Method for switching main and standby power supplies |
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| CN101853063A true CN101853063A (en) | 2010-10-06 |
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| CN201010162896A Pending CN101853063A (en) | 2010-05-05 | 2010-05-05 | Method for switching main and standby power supplies |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622073A (en) * | 2011-01-27 | 2012-08-01 | 鸿富锦精密工业（深圳）有限公司 | Power-off protection system of power supply |
| CN108073492A (en) * | 2016-11-14 | 2018-05-25 | 英业达科技有限公司 | It is standby to carry electric supply system |
| CN111399620A (en) * | 2020-04-24 | 2020-07-10 | 西安紫光国芯半导体有限公司 | Backup power supply and backup method |
| CN112564267A (en) * | 2020-12-15 | 2021-03-26 | 重庆西南集成电路设计有限责任公司 | Power supply switching circuit applied to multiple groups of power supplies |
-
2010
- 2010-05-05 CN CN201010162896A patent/CN101853063A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622073A (en) * | 2011-01-27 | 2012-08-01 | 鸿富锦精密工业（深圳）有限公司 | Power-off protection system of power supply |
| CN102622073B (en) * | 2011-01-27 | 2016-04-20 | 国家电网公司 | Power supply unit circuit breaking protective system |
| CN108073492A (en) * | 2016-11-14 | 2018-05-25 | 英业达科技有限公司 | It is standby to carry electric supply system |
| CN108073492B (en) * | 2016-11-14 | 2021-04-23 | 英业达科技有限公司 | Spare power supply system |
| CN111399620A (en) * | 2020-04-24 | 2020-07-10 | 西安紫光国芯半导体有限公司 | Backup power supply and backup method |
| CN112564267A (en) * | 2020-12-15 | 2021-03-26 | 重庆西南集成电路设计有限责任公司 | Power supply switching circuit applied to multiple groups of power supplies |
| CN112564267B (en) * | 2020-12-15 | 2023-01-31 | 重庆西南集成电路设计有限责任公司 | Power supply switching circuit applied to multiple groups of power supplies |
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Application publication date: 20101006 |