CN105262201A - Cold backup switching method and circuit for redundant power supply, and redundant power supply - Google Patents
Cold backup switching method and circuit for redundant power supply, and redundant power supply Download PDFInfo
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- CN105262201A CN105262201A CN201410345658.6A CN201410345658A CN105262201A CN 105262201 A CN105262201 A CN 105262201A CN 201410345658 A CN201410345658 A CN 201410345658A CN 105262201 A CN105262201 A CN 105262201A
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Abstract
The invention is applicable to the field of power supplies, and provides a cold backup switching method and circuit for a redundant power supply, and the redundant power supply. The cold backup switching method comprises the steps of sampling output total current, an determining the redundant power supply efficiency according to the current sampling value; judging whether the redundant power supply efficiency is lower than half load; if so, outputting a first cold backup control signal or a second cold backup control signal; disconnecting a first branch circuit according to the first cold backup control signal or the second cold backup control signal, and controlling the power supply to be output through a second branch circuit; or otherwise, outputting a first working control signal or a second working control signal; closing the first branch circuit according to the first working control signal or the second working control signal, and controlling the power supply to be output through the first branch circuit, wherein the output voltage of the second branch circuit is less than that of the first branch circuit. When the power supply efficiency is lower than the half load, the power supply is controlled to enter the cold backup state to improve the efficiency of the power supply; and when the normal power supply is switched to the backup power supply, voltage output is always kept without requiring a large capacitor for buffering, so that the redundant power supply is high in reliability and low in cost.
Description
Technical field
The invention belongs to field of power supplies, particularly relate to a kind of cold standby changing method of redundant power, circuit and redundant power.
Background technology
The redundant power of current band PMBus function is used in the high reliability such as server and communication power supply field in enormous quantities, because these servers are substantially all work in 24 hours, but in fact in idle (as the late into the night) because data processing amount falls sharply, the power consumption of these servers is usually operated in semi-load below, but time below semi-load, the operating efficiency of power supply is usually lower, causes energy waste.
Prior art enters cold standby state in order to energy efficient controls one of them power module of redundant power usually, make a power module not output dc voltage, but, the time that the power module power down of normal work is switched to of the power module work of cold standby of short duration does not have direct voltage output, therefore must increase a bulky capacitor at output and do output buffering, to prevent output voltage from dropping to below normal working voltage, cause redundant power cost to increase, reliability reduces.
Summary of the invention
The object of the embodiment of the present invention is the cold standby changing method providing a kind of redundant power, is intended to solve current redundant power no current when working power and cold standby electrical source exchange and exports, cause redundant power reliability low, the problem that cost is high.
The embodiment of the present invention is achieved in that a kind of cold standby changing method of redundant power, and described method comprises the steps:
To the sampling of output total current, and according to current sampling data determination redundant power efficiency;
Judge that whether described redundant power load is lower than semi-load;
If so, the first cold standby control signal or the second cold standby control signal is then exported;
Disconnect the first branch road according to the first or second cold standby control signal, control first or second source are exported by the second branch road;
If not, then the first working control signal and the second working control signal is exported;
According to the first and second working control signal closed two first branch roads respectively, control the first and second power supplys and export respectively by two first branch roads;
Judge that whether first, second power control unit output voltage is identical;
If so, then first, second power control unit output current sum is exported as output total current;
If not, then the output current of power control unit corresponding for high voltage is exported as output total current;
Wherein, the voltage that described second branch road exports is less than the voltage that described first branch road exports.
Another object of the embodiment of the present invention is the cold standby commutation circuit providing a kind of redundant power, is connected to the first power supply, between second source and load, described cold standby commutation circuit comprises:
Power supply backplane, the output of described power supply backplane is connected with load, for sampling to output total current, according to current sampling data determination redundant power efficiency, and judge that whether described redundant power efficiency is lower than semi-load, if so, then export the first cold standby control signal or the second cold standby control signal, if not, then the first working control signal and the second working control signal is exported;
First power control unit, comprise the first branch road and the second branch road, the control end of described first power control unit is connected with the control end of described power supply backplane, the input of described first power control unit is connected with described first power supply, the output of described first power control unit is connected with the first input end of described power supply backplane, for disconnecting the first branch road according to described first cold standby control signal, control the first power supply to be exported by the second branch road, or according to closed first branch road of described first working control signal, control the first power supply to be exported by the first branch road,
Second source control unit, comprise the first branch road and the second branch road, the control end of described second source control unit is connected with the control end of described power supply backplane, the input of described second source control unit is connected with described second source, the output of described second source control unit is connected with the second input of described power supply backplane, for disconnecting the first branch road according to described second cold standby control signal, control second source to be exported by the second branch road, or according to closed first branch road of described second working control signal, control second source to be exported by the first branch road,
Wherein, the voltage that described second branch road exports is less than the voltage that described first branch road exports;
And, described power supply backplane judges that whether first, second power control unit output voltage is identical, if, then first, second power control unit output current sum is exported as output total current, if not, then the output current of power control unit corresponding for high voltage is exported as output total current.
Another object of the embodiment of the present invention is to provide a kind of redundant power adopting above-mentioned cold standby commutation circuit.
The embodiment of the present invention is when power-efficient is lower than semi-load, control a power supply and enter cold standby state, make the output of cold standby power supply a little less than the cold standby supply voltage of former supply voltage, therefore cannot output current, total output current is all transferred on non-cold standby power supply, non-cold standby power supply is increased due to load, corresponding raising power-efficient, thus the conversion efficiency improving system.And when non-cold standby power supply power-fail or fault cisco unity malfunction, when its output voltage is reduced to below cold standby electric power output voltage, cold standby power supply automatically switches to and exports in power supply, thus complete the switching being transferred to normal operating conditions from cold standby state, realize redundancy feature, and the situation of power down can not be there is during switching, improve system reliability, do not need to increase bulky capacitor buffering, provide cost savings, this ensures that there the reliability of power-supply system yet.
Accompanying drawing explanation
The flowage structure figure of the cold standby changing method of the redundant power that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the efficiency working curve diagram of power supply;
The structure chart of the cold standby commutation circuit of the redundant power that Fig. 3 provides for the embodiment of the present invention;
The exemplary construction figure of the cold standby commutation circuit of the redundant power that Fig. 4 provides for the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The embodiment of the present invention, when power-efficient is lower than semi-load, controls a power supply and enters cold standby state, to improve power-efficient, and normal power supply switch to cold standby power time, maintain always voltage export, without the need to bulky capacitor buffering, reliability is high, and cost is low.
Below in conjunction with specific embodiment, realization of the present invention is described in detail:
Fig. 1 shows the flowage structure of the cold standby changing method of the redundant power that the embodiment of the present invention provides, and for convenience of explanation, illustrate only part related to the present invention.
As one embodiment of the invention, the cold standby changing method of this redundant power comprises the steps:
In step S101, to the sampling of output total current, and according to current sampling data determination redundant power efficiency;
In step s 102, judge that whether redundant power load is lower than semi-load;
If so, then perform step S103, export the first cold standby control signal or the second cold standby control signal;
If not, then perform step S104, export the first working control signal and the second working control signal;
After step s 103, perform step S105, disconnect the first branch road according to the first or second cold standby control signal, control first or second source are exported by the second branch road;
Or, perform step S106 after step s 104, according to the first and second working control signal closed two first branch roads respectively, control the first and second power supplys and export respectively by two first branch roads;
In step s 107, judge that whether first, second power control unit output voltage is identical;
If so, then perform step S108, first, second power control unit output current sum is exported as output total current;
If not, then perform step S109, the output current of power control unit corresponding for high voltage is exported as output total current;
Wherein, the voltage that the second branch road exports is less than the voltage that the first branch road exports.
As one embodiment of the present invention, this first, second cold standby control signal and first, second working control signal can pass through PMBus protocol transmission.
As one embodiment of the present invention, the first cold standby control signal of output or the second cold standby control signal can be recorded and record, alternately to export according to first, second cold standby control signal of record controls.
In embodiments of the present invention, by the output total current of power supply backplane sampling redundant power, according to the efficiency working curve of power supply, see Fig. 2, can learn, below semi-load, efficiency and the load of power supply are the relations be directly proportional, therefore, the embodiment of the present invention redundant power efficiency lower than during semi-load by PMBus bus Dynamic controlling wherein the first power supply enter cold standby state, second source normally works, for ensureing the reliability of system, power supply backplane can record the power control unit that the last time enters cold standby state, upper once enter cold standby time can do and alternately control, ensure that two power control units can enter cold standby state in turn, avoid occurring a certain power control unit long-term all in running order and reduction of service life.
First power control unit controls self to enter cold standby state after receiving cold standby control signal, disconnect the first branch road, control the first power supply to be exported by the second branch road, due to the second source voltage that the first supply voltage of the second branch road output exports a little less than second source control unit first branch road, and be in the scope of normal working voltage permission, therefore, first power control unit does not have output current to power, the second source that load supplying electric current is all exported by second source control unit is born, because the load current of second source control unit doubles, according to the principle relation of Fig. 2, the conversion efficiency of second source control unit is greatly improved, thus improve the conversion efficiency of whole redundant power.
When second source control unit because its output voltage when power supply or faults itself can reduce gradually, when voltage is reduced to the output voltage being less than the first power control unit, all supply currents can automatically switch to is powered by the output of the first power control unit; The MCU1 of the first power control unit can sample to its output voltage and output current equally, thus calculate the power output of this unit, after power output rises above the performance number of setting, the MCU1 of the first power control unit can return to normal operating conditions by control circuit by its boosting, exit cold standby state, thus ensure that system worked well and reach the object of Redundancy Design.
Because power supply backplane to read the operating state of the first power control unit and second source control unit in real time by PMBus bus, can stop sending the instruction entering cold standby when second source control unit fault, thus the situation also sending cold standby instruction when preventing single operational module occurs.
Redundant power is when normally working, output voltage can be adjusted to consistent by equalizing control circuit or output control circuit with second source control unit by the first power control unit, power supply is exported to realize parallel current-sharing, now the first power control unit and second source control unit respectively bear the output current powering load of half, thus achieve the function of current-sharing and redundant power supply.
The embodiment of the present invention is when power-efficient is lower than semi-load, control a power supply and enter cold standby state, make the output of cold standby power supply a little less than the cold standby supply voltage of former supply voltage, therefore cannot output current, total output current is all transferred on non-cold standby power supply, non-cold standby power supply is increased due to load, corresponding raising power-efficient, thus the conversion efficiency improving system.And when non-cold standby power supply power-fail or fault cisco unity malfunction, when its output voltage is reduced to below cold standby electric power output voltage, cold standby power supply automatically switches to and exports in power supply, thus complete the switching being transferred to normal operating conditions from cold standby state, realize redundancy feature, and the situation of power down can not be there is during switching, improve system reliability, not need to increase bulky capacitor buffering, provide cost savings, this ensures that there power-supply system yet.
Fig. 3 shows the structure of the cold standby commutation circuit of the redundant power that the embodiment of the present invention provides, and for convenience of explanation, illustrate only part related to the present invention.
As one embodiment of the invention, the cold standby commutation circuit of this redundant power can be applied to any redundant power and the high reliability such as server and communication power supply field of power supplies.
The cold standby commutation circuit of this redundant power is connected to the first power supply, between second source and load, comprises:
Power supply backplane 13, the output of power supply backplane 13 is connected with load, for sampling to output total current, according to current sampling data determination redundant power efficiency, and judge that whether redundant power efficiency is lower than semi-load, if so, then export the first cold standby control signal or the second cold standby control signal, if not, then the first working control signal and the second working control signal is exported;
First power control unit 11, comprise the first branch road L1 and the second branch road L2, the control end of the first power control unit 11 is connected with the control end of power supply backplane 13, the input of the first power control unit 11 is connected with the first power supply, the output of the first power control unit 11 is connected with the first input end of power supply backplane 13, for disconnecting the first branch road L1 according to the first cold standby control signal, control the first power supply to be exported by the second branch road L2, or according to the closed first branch road L1 of the first working control signal, control the first power supply and exported by the first branch road L1;
Second source control unit 12, comprise the first branch road L1 and the second branch road L2, the control end of second source control unit 12 is connected with the control end of power supply backplane 13, the input of second source control unit 12 is connected with second source, the output of second source control unit 12 is connected with the second input of power supply backplane 13, for disconnecting the first branch road L1 according to the second cold standby control signal, control second source to be exported by the second branch road L2, or according to the closed first branch road L1 of the second working control signal, control second source and exported by the first branch road L1;
Wherein, the voltage that the second branch road L2 exports is less than the voltage that the first branch road L1 exports;
And, power supply backplane 13 judges that whether the first power control unit 11, second source control unit 12 output voltage be identical, if, then the first power control unit 11, second source control unit 12 output current sum are exported as output total current, if not, then the output current of power control unit corresponding for high voltage is exported as output total current.
As one embodiment of the present invention, the first power control unit 11, between second source control unit 12 and power supply backplane 13, first, second cold standby control signal of PMBus protocol transmission and first, second working control signal can be passed through.
In embodiments of the present invention, sampled by power supply backplane 13 the output total current I of redundant power
3according to the efficiency working curve of power supply, see Fig. 2, can learn, below semi-load, efficiency and the load of power supply are the relations be directly proportional, therefore, the embodiment of the present invention redundant power efficiency lower than during semi-load by PMBus bus Dynamic controlling wherein the first power supply enter cold standby state, second source normally works.
First power control unit 11 controls self to enter cold standby state after receiving cold standby control signal, disconnect the first branch road L1, control the first power supply to be exported by the second branch road L2, due to the second source voltage that the first supply voltage of the second branch road L2 output exports a little less than second source control unit first branch road L1, and be in the scope of normal working voltage permission, therefore, first power control unit 11 does not have output current to power, the electric current I that the second source that load supplying electric current is all exported by second source control unit 12 exports
2bear, because the load current of second source control unit 12 doubles, according to the principle relation of Fig. 2, the conversion efficiency of second source control unit 12 is greatly improved, thus improves the conversion efficiency of whole redundant power.
When second source control unit 12 because its output voltage when power supply or faults itself can reduce gradually, when voltage is reduced to the output voltage being less than the first power control unit 11, all supply currents can automatically switch to is powered by the output of the first power control unit 11; First power control unit 11 equally can to its output voltage and output current I
1sample, thus calculate the power output of this unit, after power output rises above the performance number of setting, first power control unit 11 can return to normal operating conditions by control circuit by its boosting, exit cold standby state, thus ensure that system worked well and reach the object of Redundancy Design.
Redundant power is when normally working, output voltage can be adjusted to consistent by power supply backplane 13 with second source control unit 12 by the first power control unit 11, power supply is exported to realize parallel current-sharing, now the first power control unit 11 and second source control unit 12 respectively bear the output current powering load of half, thus achieve the function of current-sharing and redundant power supply.
The embodiment of the present invention is when power-efficient is lower than semi-load, control a power supply and enter cold standby state, make the output of cold standby power supply a little less than the cold standby supply voltage of former supply voltage, therefore cannot output current, total output current is all transferred on non-cold standby power supply, non-cold standby power supply is increased due to load, corresponding raising power-efficient, thus the conversion efficiency improving system.And when non-cold standby power supply power-fail or fault cisco unity malfunction, when its output voltage is reduced to below cold standby electric power output voltage, cold standby power supply automatically switches to and exports in power supply, thus complete the switching being transferred to normal operating conditions from cold standby state, realize redundancy feature, and the situation of power down can not be there is during switching, improve system reliability, not need to increase bulky capacitor buffering, provide cost savings, this ensures that there power-supply system yet.
Fig. 4 shows the exemplary construction of the cold standby commutation circuit of the redundant power that the embodiment of the present invention provides, and for convenience of explanation, illustrate only part related to the present invention.
As one embodiment of the invention, this power supply backplane 13 comprises:
Current sampling circuit 131, the sampling end of current sampling circuit 131 is the output of power supply backplane 13, for output total current I
3sampling;
3rd processor MCU 3, the test side of the 3rd processor MCU 3 is connected with the output of current sampling circuit 131, the output of the 3rd processor MCU 3 is the control end of power supply backplane 13, for according to current sampling data determination redundant power efficiency, and judge that whether redundant power efficiency is lower than semi-load, if so, then export the first cold standby control signal or the second cold standby control signal, if not, then the first working control signal and the second working control signal is exported;
In embodiments of the present invention, power supply backplane 13 passes through current sampling circuit 131 to output total current I
3sample, and sampled value is undertaken judging and processing by the 3rd processor MCU 3, the control signal generated after process is transmitted to the second processor MCU 2 in the first processor MCU1 in the first power control unit 11 and second source control unit 12 by PMBus bus by the 3rd processor MCU 3, and read the operating state of the first power control unit 11 and second source control unit 12 in real time, can stop sending the instruction entering cold standby when second source control unit 12 fault, thus the situation also sending cold standby instruction when preventing single operational module occurs.
Memory 132, the data terminal of memory 132 is connected with the data terminal of the 3rd processor MCU 3, for recording the first or second cold standby control signal of output, the 3rd processor MCU 3 is alternately exported according to first, second cold standby control signal of record controls;
In embodiments of the present invention, for ensureing the reliability of system, memory 132 can record the power control unit that the last time enters cold standby state, upper once enter cold standby time can do and alternately control, ensure that two power control units can enter cold standby state in turn, avoided occurring a certain power control unit long-term all in running order and reduction of service life.
Output control circuit 133, first, second input of output control circuit 133 is respectively first, second input of power supply backplane 13, the output of output control circuit 133 is the output of power supply backplane 13, whether identical for judging first, second power control unit output voltage, if, then first, second power control unit output current sum is exported as output total current, if not, then the output current of power control unit corresponding for high voltage is exported as output total current.
In embodiments of the present invention, output control circuit 133 is when judging that a power supply enters cold standby state, enter the power supply of electric power output voltage a little less than normal work of cold standby, therefore enter the power supply of cold standby not to load output current, exporting total current is all provided by the power supply normally worked;
Redundant power is when normally working, output voltage can be adjusted to consistent by output control circuit 133 with second source control unit 12 by the first power control unit 11, power supply is exported to realize parallel current-sharing, now the first power control unit 11 and second source control unit 12 respectively bear the output current powering load of half, thus achieve the function of current-sharing and redundant power supply.
As one embodiment of the invention, the first Energy control list 11 also comprises first processor MCU1, and second source control unit 12 also comprises the second processor MCU 2:
First processor MCU1, the second processor MCU 2, be respectively used to the output current of sampling first Energy control list 11, second source control unit 12, and control the operating state of the first Energy control list 11, second source control unit 12 according to output current;
The test side of first processor MCU1, the second processor MCU 2 is respectively the output of the first Energy control list 11, second source control unit 12, and the input control end of first processor MCU1, the second processor MCU 2 is the control end of the first Energy control list 11, second source control unit 12;
The first branch road L1 in each power control unit is in parallel with the second branch road L2, one conduction terminal of the first branch road L1 and the second branch road L2 is the input of the first Energy control list 11 or second source control unit 12 simultaneously, another conduction terminal of first branch road L1 and the second branch road L2 is the output of the first Energy control list 11 or second source control unit 12 simultaneously, and the control end of the first branch road L1 connects with the output control terminal of first, second corresponding processor.
In embodiments of the present invention, first processor MCU1 and the second processor MCU 2 can be sampled to its output voltage and output current, thus calculate the power output of this unit, after power output rises above the performance number of setting, normal operating conditions is returned to by its boosting by control circuit, exit cold standby state, thus ensure that system worked well and reach the object of Redundancy Design.
As one embodiment of the present invention, first branch road L1 can adopt partial pressure device to realize, in order to reduce output loss, preferably adopt diode (D1 or D2) or the metal-oxide-semiconductor of little pressure drop, two conduction terminal of partial pressure device are respectively two conduction terminal of the first branch road.
When adopting diode (D1 or D2) as partial pressure device, the anode of diode (D1 or D2) is a conduction terminal of partial pressure device, and the negative electrode of diode (D1 or D2) is another conduction terminal of partial pressure device.
Second branch road L2 can adopt gate-controlled switch (K1 or K2) to realize, two conduction terminal of this gate-controlled switch (K1 or K2) are respectively two conduction terminal of the second branch road L2, and the control end of gate-controlled switch (K1 or K2) is the control end of the second branch road L2.
Another object of the embodiment of the present invention is to provide a kind of redundant power adopting above-mentioned cold standby commutation circuit.
The embodiment of the present invention is when power-efficient is lower than semi-load, control a power supply and enter cold standby state, make the output of cold standby power supply a little less than the cold standby supply voltage of former supply voltage, therefore cannot output current, total output current is all transferred on non-cold standby power supply, non-cold standby power supply is increased due to load, corresponding raising power-efficient, thus the conversion efficiency improving system.And when non-cold standby power supply power-fail or fault cisco unity malfunction, when its output voltage is reduced to below cold standby electric power output voltage, cold standby power supply automatically switches to and exports in power supply, thus complete the switching being transferred to normal operating conditions from cold standby state, realize redundancy feature, and the situation of power down can not be there is during switching, improve system reliability, not need to increase bulky capacitor buffering, provide cost savings, this ensures that there power-supply system yet.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a cold standby changing method for redundant power, is characterized in that, described method comprises the steps:
To the sampling of output total current, and according to current sampling data determination redundant power efficiency;
Judge that whether described redundant power load is lower than semi-load;
If so, the first cold standby control signal or the second cold standby control signal is then exported;
Disconnect the first branch road according to the first or second cold standby control signal, control first or second source are exported by the second branch road;
If not, then the first working control signal and the second working control signal is exported;
According to the first and second working control signal closed two first branch roads respectively, control the first and second power supplys and export respectively by two first branch roads;
Judge that whether first, second power control unit output voltage is identical;
If so, then first, second power control unit output current sum is exported as output total current;
If not, then the output current of power control unit corresponding for high voltage is exported as output total current;
Wherein, the voltage that described second branch road exports is less than the voltage that described first branch road exports.
2. the method for claim 1, is characterized in that, the step of described output first cold standby control signal or the second cold standby control signal is specially:
Export described first cold standby control signal or described second cold standby control signal and record, according to described record controls, first, second cold standby control signal alternately exports.
3. the method for claim 1, is characterized in that, first, second cold standby control signal described and first, second working control signal described are by PMBus protocol transmission.
4. a cold standby commutation circuit for redundant power, is connected to the first power supply, between second source and load, it is characterized in that, described cold standby commutation circuit comprises:
Power supply backplane, the output of described power supply backplane is connected with load, for sampling to output total current, according to current sampling data determination redundant power efficiency, and judge that whether described redundant power load is lower than semi-load, if so, then export the first cold standby control signal or the second cold standby control signal, if not, then the first working control signal and the second working control signal is exported;
First power control unit, comprise the first branch road and the second branch road, the control end of described first power control unit is connected with the control end of described power supply backplane, the input of described first power control unit is connected with described first power supply, the output of described first power control unit is connected with the first input end of described power supply backplane, for disconnecting the first branch road according to described first cold standby control signal, control the first power supply to be exported by the second branch road, or according to closed first branch road of described first working control signal, control the first power supply to be exported by the first branch road,
Second source control unit, comprise the first branch road and the second branch road, the control end of described second source control unit is connected with the control end of described power supply backplane, the input of described second source control unit is connected with described second source, the output of described second source control unit is connected with the second input of described power supply backplane, for disconnecting the first branch road according to described second cold standby control signal, control second source to be exported by the second branch road, or according to closed first branch road of described second working control signal, control second source to be exported by the first branch road,
Wherein, the voltage that described second branch road exports is less than the voltage that described first branch road exports;
And, described power supply backplane judges that whether first, second power control unit output voltage is identical, if, then first, second power control unit output current sum is exported as output total current, if not, then the output current of power control unit corresponding for high voltage is exported as output total current.
5. cold standby commutation circuit as claimed in claim 4, it is characterized in that, described power supply backplane comprises:
Current sampling circuit, the sampling end of described current sampling circuit is the output of described power supply backplane, for sampling to output total current;
3rd processor, the test side of described 3rd processor is connected with the output of described current sampling circuit, the output of described 3rd processor is the control end of described power supply backplane, for according to current sampling data determination redundant power efficiency, and judge that whether described redundant power efficiency is lower than semi-load, if so, then export the first cold standby control signal or the second cold standby control signal, if not, then the first working control signal and the second working control signal is exported;
Memory, the data terminal of described memory is connected with the data terminal of described 3rd processor, for recording the described first or second cold standby control signal of output, described 3rd processor first, second cold standby control signal according to described record controls is alternately exported;
Output control circuit, first, second input of described output control circuit is respectively first, second input of described power supply backplane, the output of described output control circuit is the output of described power supply backplane, whether identical for judging first, second power control unit output voltage, if, then first, second power control unit output current sum is exported as output total current, if not, then the output current of power control unit corresponding for high voltage is exported as output total current.
6. cold standby commutation circuit as claimed in claim 4, it is characterized in that, first, second power control unit described also comprises respectively:
First, second processor, for the output current of first, second power control unit described of sampling, and controls the operating state of first, second power control unit described according to described output current;
The test side of first, second processor described is the output of first, second power control unit described, and the input control end of first, second processor described is the control end of first, second power control unit described;
Described first branch road in each power control unit and described second branch circuit parallel connection, one conduction terminal of described first and second branch roads is the input of described first or second source control unit simultaneously, another conduction terminal of described first and second branch roads is the output of described first or second source control unit simultaneously, and the control end of described first branch road connects with the output control terminal of corresponding first, second processor described.
7. cold standby commutation circuit as claimed in claim 6, it is characterized in that, described first branch road is a partial pressure device, and two conduction terminal of described partial pressure device are respectively two conduction terminal of described first branch road;
Described second branch road is a gate-controlled switch, and two conduction terminal of described gate-controlled switch are respectively two conduction terminal of described second branch road, and the control end of described gate-controlled switch is the control end of described second branch road.
8. cold standby commutation circuit as claimed in claim 7, it is characterized in that, described partial pressure device is diode, and the anode of described diode is a conduction terminal of described partial pressure device, and the negative electrode of described diode is another conduction terminal of described partial pressure device.
9. cold standby commutation circuit as claimed in claim 4, it is characterized in that, described first power control unit, between described second source control unit and described power supply backplane by the first cold standby control signal, described second cold standby control signal, described first working control signal and described second working control signal described in PMBus protocol transmission.
10. a redundant power, described redundant power comprises the cold standby commutation circuit of the redundant power as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105978128A (en) * | 2016-06-23 | 2016-09-28 | 浪潮电子信息产业股份有限公司 | Power supply module, power supply system and power supply method |
| CN109633291A (en) * | 2018-12-20 | 2019-04-16 | 兰州空间技术物理研究所 | Bias current master backup switching circuit in a kind of space electric field detection system |
| WO2021223172A1 (en) * | 2020-05-07 | 2021-11-11 | 深圳市大疆创新科技有限公司 | Power supply circuit, power source apparatus, mobile platform, and method for adjusting remaining electric quantity |
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| US5668706A (en) * | 1992-01-14 | 1997-09-16 | Nippon Signal Co., Ltd. | Load driving circuit |
| CN101281483A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | Double-machine redundant tolerant system and redundant switching method thereof |
| CN204012895U (en) * | 2014-07-18 | 2014-12-10 | 中国长城计算机深圳股份有限公司 | A kind of cold standby commutation circuit and redundant power of redundant power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5668706A (en) * | 1992-01-14 | 1997-09-16 | Nippon Signal Co., Ltd. | Load driving circuit |
| CN101281483A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | Double-machine redundant tolerant system and redundant switching method thereof |
| CN204012895U (en) * | 2014-07-18 | 2014-12-10 | 中国长城计算机深圳股份有限公司 | A kind of cold standby commutation circuit and redundant power of redundant power |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978128A (en) * | 2016-06-23 | 2016-09-28 | 浪潮电子信息产业股份有限公司 | Power supply module, power supply system and power supply method |
| CN109633291A (en) * | 2018-12-20 | 2019-04-16 | 兰州空间技术物理研究所 | Bias current master backup switching circuit in a kind of space electric field detection system |
| CN109633291B (en) * | 2018-12-20 | 2020-11-27 | 兰州空间技术物理研究所 | Bias current main backup switching circuit in space electric field detection system |
| WO2021223172A1 (en) * | 2020-05-07 | 2021-11-11 | 深圳市大疆创新科技有限公司 | Power supply circuit, power source apparatus, mobile platform, and method for adjusting remaining electric quantity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105262201B (en) | 2018-01-16 |
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Effective date of registration: 20210816 Address after: 030000 Gangyuan North Road, Zhongbei high tech Zone, Taiyuan City, Shanxi Province Patentee after: Great Wall Power Technology Co.,Ltd. Address before: 518000 Great Wall computer building, science and Technology Park, Nanshan District, Shenzhen City, Guangdong Province Patentee before: China Great Wall Technology Group Co.,Ltd. |