CN102118057B - DC UPS circuit with integrated charge-discharge circuit - Google Patents
DC UPS circuit with integrated charge-discharge circuit Download PDFInfo
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- CN102118057B CN102118057B CN201010002120.7A CN201010002120A CN102118057B CN 102118057 B CN102118057 B CN 102118057B CN 201010002120 A CN201010002120 A CN 201010002120A CN 102118057 B CN102118057 B CN 102118057B
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Abstract
The invention relates to a DC UPS (uninterrupted power supply) circuit with an integrated charge-discharge circuit. The DC UPS circuit comprises an AC-DC conversion circuit, an energy storage unit, a first path switch circuit and a second path switch circuit, the integrated charge-discharge circuit and an operation control unit, wherein the input and output terminals of integrated charge-discharge circuit are connected with the first path switch circuit and the second path switch circuit respectively and used for enabling the energy storage unit to charge or discharge electricity. When input power is abnormal, the input and the output terminals of the integrated charge-discharge circuit are correspondingly connected with the energy storage unit and a power-supply output terminal respectively, so as to enable electricity discharged by the energy storage unit to be transmitted to the power-supply output terminal through the integrated charge-discharge circuit; and when the input power is normal, input and output terminals of the integrated charge-discharge circuit are correspondingly connected with the power-supply output terminal and the energy storage unit respectively, so as to enable the integrated charge-discharge circuit to charge the energy storage unit. The DC UPS circuit has the advantages of smaller volume, less spare parts, lower complexity of the circuit, lower manufacturing cost and the like.
Description
Technical field
The present invention relates to a kind of power circuit, relate in particular to a kind of DC UPS circuit (Uninterruptible power supply, UPS) with integrated charge-discharge circuit.
Background technology
Along with the fast development of information industry and high-tech industry, most precision electronic device and equipment need to rely on high-quality power supply supply and maintain normal operation.In various supply power modes, uninterruptable power supply is except can guaranteeing that power supply can not be interrupted, high-quality power supply can also be provided, so uninterruptable power supply has become a kind of preferred plan that high-quality power supply is provided now, be widely used at present network communication equipment, data center (Data center) and some important information equipment.
DC-to-DC change-over circuit (DC-DC converter circuit) when tradition uninterruptable power supply has a charging circuit (charge circuit) with a backup electric power, when civil power is normal, tradition uninterruptable power supply can charge to battery by charging circuit, and now DC-to-DC change-over circuit can be out of service.Otherwise tradition uninterruptable power supply can utilize DC-to-DC change-over circuit by the magnitude of voltage of battery when commercial power interruption, for example 11 volts (V) is converted to the load voltage value of equipment, and for example 12 volts, now charging circuit can be out of service.
Hence one can see that, tradition uninterruptable power supply need to adopt charging circuit and these two independent circuits of DC-to-DC change-over circuit, make battery respectively at normal charging and the electric discharge when interrupting of civil power, cause uninterruptable power supply to there is larger volume, more number of parts, higher circuit complexity and higher manufacturing cost.Also because charging circuit and DC-to-DC change-over circuit not can with time move, so the circuit utilization rate of uninterruptable power supply is lower.
Therefore, how to develop a kind of DC UPS circuit with integrated charge-discharge circuit that improves above-mentioned prior art defect, real is the current problem in the urgent need to address of correlative technology field technical staff.
Summary of the invention
The object of the present invention is to provide a kind of DC UPS circuit with integrated charge-discharge circuit, charging and electric discharge while adopting single integrated charge-discharge circuit to make energy-storage units normal and abnormal respectively at input power, so that this has, small volume, the number of parts of DC UPS circuit of integrated charge-discharge circuit is less, circuit complexity is lower, manufacturing cost is lower and circuit utilization rate is higher.In addition,, compared to traditional DC UPS circuit, in when charging, the operational efficiency that can make to have the DC UPS circuit of integrated charge-discharge circuit promotes, and on the other hand, when electric discharge, can increase the power-on time of energy-storage units.
For reaching above-mentioned purpose, of the present invention one compared with broad sense embodiment for a kind of DC UPS circuit with integrated charge-discharge circuit is provided, in order to receive input power and to provide continual DC output power at power supply output, it comprises: AC-DC change-over circuit, is connected in power supply output contact together; Energy-storage units, in order to store electrical energy; First via footpath commutation circuit, is connected in power supply output and energy-storage units; The second path commutation circuit, is connected in energy-storage units and power supply output; Integrated charge-discharge circuit, the input of integrated charge-discharge circuit and output are connected to first via footpath commutation circuit and the second path commutation circuit, use so that energy-storage units charge or discharge; And operation control unit.Wherein, when input power source abnormality, operation control unit is controlled first via footpath commutation circuit and the second path commutation circuit toggle path, input and the output of integrated charge-discharge circuit are connected respectively in energy-storage units and power supply output, and the electric energy of energy-storage units electric discharge is sent to power supply output via integrated charge-discharge circuit; And when input power is normal, operation control unit is controlled first via footpath commutation circuit and the second path commutation circuit toggle path, input and the output of integrated charge-discharge circuit are connected respectively in power supply output and energy-storage units, and integrated charge-discharge circuit charge to energy-storage units.
For reaching above-mentioned purpose, of the present invention another compared with broad sense embodiment for a kind of DC UPS circuit with integrated charge-discharge circuit is provided, with so that DC suppling equipment to supply power to the DC output power of electronic equipment uninterrupted, it comprises: energy-storage units, contact connects together, in order to store electrical energy; First via footpath commutation circuit, is connected in feeder ear and the energy-storage units of DC suppling equipment; The second path commutation circuit, is connected in the feeder ear of energy-storage units and DC suppling equipment; Integrated charge-discharge circuit, the input of integrated charge-discharge circuit and output are connected to first via footpath commutation circuit and the second path commutation circuit, use so that energy-storage units charge or discharge; And operation control unit; Wherein, when DC output power is abnormal, operation control unit is controlled first via footpath commutation circuit and the second path commutation circuit toggle path, input and the output of integrated charge-discharge circuit are connected respectively in the feeder ear of energy-storage units and DC suppling equipment, and the electric energy of energy-storage units electric discharge is sent to the feeder ear of DC suppling equipment via integrated charge-discharge circuit; And when DC output power is normal, operation control unit is controlled first via footpath commutation circuit and the second path commutation circuit toggle path, make input and the output of integrated charge-discharge circuit be connected respectively feeder ear and the energy-storage units in DC suppling equipment, and integrated charge-discharge circuit charge to energy-storage units.
Beneficial effect of the present invention is, the DC UPS circuit with integrated charge-discharge circuit of the present invention, and small volume, number of parts is less, circuit complexity is lower and manufacturing cost is lower, and circuit utilization rate is higher.In addition, operational mode has increased the less conduction mode of energy loss, and when charging, operational efficiency promotes, and can increase the power-on time of energy-storage units when electric discharge.While being applied to the occasion of direct current supply, for example data center or communication equipment, can omit AC-DC change-over circuit, and be directly connected in the feeder ear of DC suppling equipment, originally realized the reliability of electronic equipment operation with lower one-tenth.
Accompanying drawing explanation
Fig. 1: be the schematic diagram of the DC UPS circuit with integrated charge-discharge circuit of preferred embodiment of the present invention.
Fig. 2: be the schematic diagram of the DC UPS circuit with integrated charge-discharge circuit of another preferred embodiment of the present invention.
Wherein, description of reference numerals is as follows:
1: the DC UPS circuit with integrated charge-discharge circuit
11: AC-DC change-over circuit 12: first via footpath commutation circuit
13: the second path commutation circuit 12a, 13a: the first contact
12b, 13b: the second contact 12c, 13c: the 3rd contact
14: integrated charge-discharge circuit 141: charge and discharge control circuit
14a: the input of integrated charge-discharge circuit
14b: the output of integrated charge-discharge circuit
15: energy-storage units 16: operation control unit
162: testing circuit 161: operation controller
2: DC suppling equipment 3: data center
L
1: the first inductance D
1: the first diode
Q
1: the first switch C
1: the first electric capacity
C
o: output capacitance R
s: detect resistance
COM: be total to contact K: power supply output
K
1: the first link V
b: the magnitude of voltage of energy-storage units
V
in: input power V
o: DC output power
V
s: detect voltage
Embodiment
Some exemplary embodiments that embody feature & benefits of the present invention will describe in detail in the following description.Be understood that the present invention can have various variations on different embodiment, its neither departing from the scope of the present invention, and explanation wherein and be shown in the use that ought explain in essence, but not in order to limit the present invention.
Refer to Fig. 1, the schematic diagram of its DC UPS circuit with integrated charge-discharge circuit that is preferred embodiment of the present invention.The DC UPS circuit 1 reception input power V as shown in Figure 1, with integrated charge-discharge circuit
inand provide continual DC output power V at power supply output K
o, it comprises: AC-DC change-over circuit 11, first via footpath commutation circuit 12, the second path commutation circuit 13, integrated charge-discharge circuit 14, energy-storage units 15, operation control unit 16 and output capacitance C
o.Wherein, the second contact 12b that AC-DC change-over circuit 11 is connected in first via footpath commutation circuit 12 and power supply output K, in order to by the input power V exchanging
inbe converted to DC output power V
o, for example, the ac voltage of 110 volts is converted to the DC voltage value of 12 volts.And output capacitance C
obe connected in power supply output K together between contact COM.
In the present embodiment, first via footpath commutation circuit 12 and the second path commutation circuit 13 are by relay (Relay), bipolar junction transistor (Bipolar Junction Transistor, BJT) or mos field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFET) realize, but not as limit.The first contact 12a of first via footpath commutation circuit 12 and the first contact 13a of the second path commutation circuit 13 are connected to input 14a and the output 14b of integrated charge-discharge circuit 14, the second contact 12b of first via footpath commutation circuit 12 and the second contact 13b of the second path commutation circuit 13 are connected in power supply output K, and the 3rd contact 12c of first via footpath commutation circuit 12 and the 3rd contact 13c of the second path commutation circuit 13 are connected in energy-storage units 15.
Integrated charge-discharge circuit 14 is except can, to energy-storage units 15 chargings, being sent to power supply output K via integrated charge-discharge circuit 14 by the electric energy of energy-storage units 15 electric discharges.In the present embodiment, integrated charge-discharge circuit 14 comprises: charge and discharge control circuit 141, the first inductance L
1, the first diode D
1, the first switch Q
1, the first capacitor C
1and detection resistance R
s, wherein, the first inductance L
1be connected in input 14a and the first link K of integrated charge-discharge circuit 14
1between, the first diode D
1be connected in the first link K
1and between the output 14b of integrated charge-discharge circuit 14, the first capacitor C
1the output 14b that is connected in integrated charge-discharge circuit 14 is together between contact COM, the first switch Q
1with detection resistance R
sat the first link K
1between contact COM, be connected in series together.Charge and discharge control circuit 141 and be connected to detection resistance R
sone end, the first switch Q
1control end with operation control unit 16 operation controller 161, in order to control the first switch Q
1conducting or cut-off.As the first switch Q
1during conducting, flow through detection resistance R
selectric current can corresponding produce and detect voltage V
s, charge and discharge control circuit 141 according to detecting voltage V
sadjust the first switch Q
1the duty ratio of conducting (Duty cycle) size.Wherein, the first switch Q
1can be but not be defined as bipolar junction transistor or mos field effect transistor.
In the present embodiment, operation control unit 16 inclusion test circuit 162 and operation controller 161, wherein testing circuit 162 is connected to input and the operation controller 161 of AC-DC change-over circuit 11, in order to detect input power V
inthe state of (for example civil power).Operation controller 161 can be but not be limited to microprocessor (Micro Controller Unit, MCU) or digital signal processor (Digital SignalProcessors, DSP), it is connected to testing circuit 162, the control end of first via footpath commutation circuit 12, the control end of the second path commutation circuit 13, charges and discharge control circuit 141 and energy-storage units 15, in order to control DC UPS circuit 1 operation with integrated charge-discharge circuit.
As this input power V
inwhen abnormal, for example, interrupt, magnitude of voltage is too low, magnitude of voltage is too high, underfrequency or frequency too high, the DC output power V that AC-DC change-over circuit 11 cannot output rated voltage value
ooperation controller 161 can be controlled first via footpath commutation circuit 12 and the second path commutation circuit 13 toggle paths, between the first contact 12a of first via footpath commutation circuit 12 and the 3rd contact 12c, form conducting path, between the first contact 13a of the second path commutation circuit 13 and the second contact 13b, form conducting path, input 14a and the output 14b of integrated charge-discharge circuit 14 are connected respectively in energy-storage units 15 and power supply output K, and the electric energy of energy-storage units 15 electric discharges just can be sent to power supply output K via integrated charge-discharge circuit 14 whereby.
In the present embodiment, as this input power V
inwhen abnormal, operation controller 161 can be controlled integrated charge-discharge circuit 14 operations makes the electric energy of energy-storage units 15 electric discharges be sent to power supply output K via integrated charge-discharge circuit 14, and wherein operation controller 161 also can be according to the magnitude of voltage V of energy-storage units 15
bdetermine the operational mode of integrated charge-discharge circuit 14.
In the present embodiment, in discharge process, as the magnitude of voltage V of energy-storage units 15
bbe greater than DC output power V
oload voltage value V
ktime (V
b> V
k), operation controller 161 is controlled integrated charge-discharge circuit 14 with conduction mode (pass-through mode) operation, the first switch Q
1cut-off, integrated charge-discharge circuit 14 is not by the magnitude of voltage V of energy-storage units 15
bboost, but directly by the magnitude of voltage V of energy-storage units 15
bsequentially via the 3rd contact 12c of first via footpath commutation circuit 12, the first contact 12a of first via footpath commutation circuit 12, the input 14a of integrated charge-discharge circuit 14, the first inductance L
1, the first diode D
1, the output 14b of integrated charge-discharge circuit 14 is, the second contact 13b of the first contact 13a of the second path commutation circuit 13 and the second path commutation circuit 13 is sent to power supply output K, make the electric energy of energy-storage units 15 electric discharges be sent to power supply output K, now DC output power V via integrated charge-discharge circuit 14
omagnitude of voltage approximate the magnitude of voltage V of energy-storage units 15
b(V
o=V
b) (the magnitude of voltage V of as many as energy-storage units 15
bsubtract the first diode D
10.7 volt of (V of forward conduction magnitude of voltage
o=V
b-0.7)).The electric discharge that continues, as the magnitude of voltage V of energy-storage units 15
bbe less than or equal to the first critical voltage value V
t1(V
b<=V
t1) time, operation controller 161 is controlled integrated charge-discharge circuit 14 with pulse-width-modulated mode (PWM mode) operation, charges and discharge control circuit 141 and controls the first switch Q
1with mode conducting and the cut-off of pulse width modulation, integrated charge-discharge circuit 14 is by the magnitude of voltage V of energy-storage units 15
bafter boosting, be resent to power supply output K, now DC output power V
omagnitude of voltage be greater than the magnitude of voltage V of energy-storage units 15
b(V
o> V
b).
For example, as this input power V
inextremely, and the magnitude of voltage V of energy-storage units 15
bwith DC output power V
oload voltage value V
kbe respectively 13 volts of (V with 12 volts time
b> V
k), operation controller 161 is controlled integrated charge-discharge circuit 14 with conduction mode operation, the first switch Q
1cut-off, integrated charge-discharge circuit 14 is not by the magnitude of voltage V of energy-storage units 15
bboost, but directly by the magnitude of voltage V of energy-storage units 15
bsequentially via integrated charge-discharge circuit 14, be directly sent to power supply output K, make the electric energy of energy-storage units 15 electric discharges be sent to power supply output K, now DC output power V via integrated charge-discharge circuit 14
omagnitude of voltage approximate 13 volts of (V
o=V
b), as many as 12.3 volts of (V
o=V
b-0.7).The electric discharge that continues, as the magnitude of voltage V of energy-storage units 15
bdrop to the first critical voltage value V of 12 volts
t1(V
b<=V
t1) time, operation controller 161 is controlled integrated charge-discharge circuit 14 with pulse-width-modulated mode operation, charges and discharge control circuit 141 and controls the first switch Q
1with mode conducting and the cut-off of pulse width modulation, integrated charge-discharge circuit 14 is by the magnitude of voltage V of energy-storage units 15
bafter boosting, be resent to power supply output K, now DC output power V
omagnitude of voltage be 12 volts of [V
o> (V
b-0.7)].
As input power V
inwhen normal, the DC output power V of AC-DC change-over circuit 11 meeting output rated voltage values
ooperation controller 161 can be controlled first via footpath commutation circuit 12 and the second path commutation circuit 13 toggle paths, make to form conducting path between the first contact 12a of first via footpath commutation circuit 12 and the second contact 12b, between the first contact 13a of the second path commutation circuit 13 and the 3rd contact 13c, form conducting path, the input 14a of integrated charge-discharge circuit 14 and output 14b are connected respectively in power supply output K and energy-storage units 15.
In the present embodiment, as input power V
inwhen normal, operation controller 161 can be controlled 15 chargings of 14 pairs of energy-storage units of integrated charge-discharge circuit, and wherein operation controller 161 also can be according to the magnitude of voltage V of energy-storage units 15
bdetermine integrated charge-discharge circuit 14 whether in the mode of pulse width modulation, to move and by DC output power V
omagnitude of voltage be resent to 15 chargings of 15 pairs of energy-storage units of energy-storage units after boosting.
In the present embodiment, in charging process, when energy-storage units 15 is because storing lower its magnitude of voltage V that makes of electric weight
bbe less than DC output power V
omagnitude of voltage time (V
b< V
o), operation controller 161 is controlled integrated charge-discharge circuit 14 with conduction mode operation, the first switch Q
1cut-off, integrated charge-discharge circuit 14 is not by DC output power V
omagnitude of voltage boost, but directly by DC output power V
osequentially via the second contact 12b of first via footpath commutation circuit 12, the first contact 12a of first via footpath commutation circuit 12, the input 14a of integrated charge-discharge circuit 14, the first inductance L
1, the first diode D
1, the output 14b of integrated charge-discharge circuit 14 is, the 3rd contact 13c of the first contact 13a of the second path commutation circuit 13 and the second path commutation circuit 13 is sent to 15 pairs of energy-storage units of energy-storage units 15 charging, makes electric weight and the magnitude of voltage V of energy-storage units 15
brise, now the magnitude of voltage V of the energy-storage units 15 of charged state
bapproximate DC output power V
omagnitude of voltage (V
b=V
o) (as many as DC output power V
omagnitude of voltage subtract the first diode D
10.7 volt of (V of forward conduction magnitude of voltage
b=V
o-0.7)).The charging that continues, as the magnitude of voltage V of energy-storage units 15
bbe more than or equal to the second critical voltage value V
t2(V
b>=V
t2) time, operation controller 161 is controlled integrated charge-discharge circuit 14 with pulse-width-modulated mode operation, charges and discharge control circuit 141 and controls the first switch Q
1with mode conducting and the cut-off of pulse width modulation, integrated charge-discharge circuit 14 is by DC output power V
omagnitude of voltage be resent to 15 pairs of energy-storage units of energy-storage units, 15 charging, now the magnitude of voltage V of the energy-storage units 15 of charged state after boosting
bbe greater than DC output power V
omagnitude of voltage (V
b> V
o).
For example, as input power V
innormally, and the magnitude of voltage V of energy-storage units 15
bwith DC output power V
omagnitude of voltage be respectively 11 volts of (V with 12 volts time
b< V
o), operation controller 161 is controlled integrated charge-discharge circuit 14 with conduction mode operation, the first switch Q1 cut-off, and integrated charge-discharge circuit 14 is not by DC output power V
omagnitude of voltage boost, but directly by DC output power V
ovia integrated charge-discharge circuit 14, be directly sent to 15 pairs of energy-storage units of energy-storage units, 15 charging, now the magnitude of voltage V of the energy-storage units 15 of charged state
bapproximate 12 volts of (V
b=V
o), as many as 11.3 volts of (V
b=V
o-0.7).The charging that continues, as the magnitude of voltage V of energy-storage units 15
brise to the second critical voltage value V of 12 volts
t2time (V
b>=V
t2), operation controller 161 is controlled integrated charge-discharge circuit 14 with pulse-width-modulated mode operation, charges and discharge control circuit 141 and controls the first switch Q
1with mode conducting and the cut-off of pulse width modulation, integrated charge-discharge circuit 14 is by DC output power V
omagnitude of voltage be resent to 15 pairs of energy-storage units of energy-storage units, 15 charging, now the magnitude of voltage V of the energy-storage units 15 of charged state after boosting
bbe 13.7 volts of (V
b> V
o).
Refer to Fig. 2 and coordinate Fig. 1, wherein Fig. 2 is the schematic diagram of the DC UPS circuit with integrated charge-discharge circuit of another preferred embodiment of the present invention.Fig. 2 and Fig. 1 difference are that the DC UPS circuit 1 with integrated charge-discharge circuit of Fig. 2 does not comprise AC-DC change-over circuit 11, and feeder ear and the operation controller 161 of DC suppling equipment 2, the DC output power V providing in order to detect DC suppling equipment 2 are provided the testing circuit 162 of operation control unit 16
ostate; Another difference is in the feeder ear that is connected in DC suppling equipment 2 in the second contact 12b of the first via footpath of Fig. 2 commutation circuit 12 and the second contact 13b of the second path commutation circuit 13.
As shown in Figure 2, in the present embodiment, DC suppling equipment 2 directly provides DC output power V
o(also can be other electronic equipments to data center 3, communication equipment for example), the DC UPS circuit 1 with integrated charge-discharge circuit is directly connected in the feeder ear of DC suppling equipment 2, in order to the DC output power V providing according to DC suppling equipment 2
ostate, make energy-storage units 15 electric discharge and the feeder ear of electric energy to DC suppling equipment 2 be provided, or receiving DC output power V
oelectric energy to energy-storage units 15 charging.
In the present embodiment, testing circuit 162 is in order to detect DC output power V
ostate.As DC output power V
owhen abnormal, DC suppling equipment 2 cannot provide the DC output power V of load voltage value
o, operation controller 161 can be judged DC output power V by testing circuit 162
ofor abnormality, and corresponding first via footpath commutation circuit 12 and the second path commutation circuit 13 toggle paths controlled, make to form conducting path between the first contact 12a of first via footpath commutation circuit 12 and the 3rd contact 12c, and between the first contact 13a of the second path commutation circuit 13 and the second contact 13b, form conducting path, now, the input 14a of integrated charge-discharge circuit 14 and output 14b are connected respectively the feeder ear with DC suppling equipment 2 in energy-storage units 15, the electric energy of energy-storage units 15 electric discharges just can be sent to via integrated charge-discharge circuit 14 feeder ear of DC suppling equipment 2 whereby.
As DC output power V
owhen abnormal, operation controller 161 can be judged DC output power V by testing circuit 162
ofor normal condition, and corresponding control integrated charge-discharge circuit 14 operations and make the electric energy of energy-storage units 15 electric discharges via integrated charge-discharge circuit 14, be sent to the feeder ear of DC suppling equipment 2, now, operation controller 161 also can be according to the magnitude of voltage V of energy-storage units 15
bdetermine the operational mode of integrated charge-discharge circuit 14.
In discharge process, as the magnitude of voltage V of energy-storage units 15
bbe greater than DC output power V
oload voltage value V
ktime (V
b> V
k), operation controller 161 can be controlled integrated charge-discharge circuit 14 with conduction mode operation, the first switch Q
1cut-off, integrated charge-discharge circuit 14 is not by the magnitude of voltage V of energy-storage units 15
bboost, but directly by the magnitude of voltage V of energy-storage units 15
bsequentially via the 3rd contact 12c of first via footpath commutation circuit 12, the first contact 12a of first via footpath commutation circuit 12, the input 14a of integrated charge-discharge circuit 14, the first inductance L
1, the first diode D
1, the output 14b of integrated charge-discharge circuit 14 is, the second contact 13b of the first contact 13a of the second path commutation circuit 13 and the second path commutation circuit 13 is sent to the feeder ear of DC suppling equipment 2, make the electric energy of energy-storage units 15 electric discharges via integrated charge-discharge circuit 14, be sent to the feeder ear of DC suppling equipment 2, now DC output power V
omagnitude of voltage approximate the magnitude of voltage V of energy-storage units 15
b(V
o=V
b) (the magnitude of voltage V of as many as energy-storage units 15
bsubtract the first diode D
10.7 volt of (V of forward conduction magnitude of voltage
o=V
b-0.7)).
The electric discharge that continues, as the magnitude of voltage V of energy-storage units 15
bbe less than or equal to the first critical voltage value V
t1(V
b<=V
t1) time, operation controller 161 can be controlled integrated charge-discharge circuit 14 with pulse-width-modulated mode operation, charges and discharge control circuit 141 and can control the first switch Q
1with mode conducting and the cut-off of pulse width modulation, integrated charge-discharge circuit 14 is by the magnitude of voltage V of energy-storage units 15
bafter boosting, be resent to the feeder ear of DC suppling equipment 2, now DC output power V
omagnitude of voltage be greater than the magnitude of voltage V of energy-storage units 15
b(V
o> V
b).
In sum, the DC UPS circuit with integrated charge-discharge circuit of the present invention, charging and electric discharge while adopting single integrated charge-discharge circuit to make energy-storage units normal and abnormal respectively at input power, therefore this has the small volume of the DC UPS circuit of integrated charge-discharge circuit, number of parts is less, circuit complexity is lower and manufacturing cost is lower, wherein integrated charge-discharge circuit except can charging to energy-storage units when input power is normal, can also when input power source abnormality, the electric energy of energy-storage units electric discharge be sent to power supply output via integrated charge-discharge circuit, so its circuit utilization rate is higher.In addition, integrated charge-discharge circuit is when charge and discharge, operation control unit determines that according to the magnitude of voltage of energy-storage units the operational mode of integrated charge-discharge circuit is conduction mode or pulse-width-modulated mode, be different from traditional circuit, operational mode has increased the less conduction mode of energy loss, when charging, the operational efficiency that can make to have the DC UPS circuit of integrated charge-discharge circuit promotes, on the other hand, when electric discharge, can increase the power-on time of energy-storage units.While being applied to the occasion of direct current supply, for example data center or communication equipment, the DC UPS circuit with integrated charge-discharge circuit of the present invention can omit AC-DC change-over circuit 11, and be directly connected in the feeder ear of DC suppling equipment 2, with lower one-tenth, originally realized the reliability of electronic equipment operation.
Those skilled in the art should recognize in the situation that do not depart from change and the retouching that scope and spirit of the present invention that the appended claim of the present invention discloses are done, within all belonging to the protection range of claim of the present invention.
Claims (20)
1. a DC UPS circuit with integrated charge-discharge circuit, in order to receive an input power and to provide a continual DC output power at a power supply output, it comprises:
One AC-DC change-over circuit, is connected in a power supply output and has contact altogether;
One energy-storage units, in order to store electrical energy;
One first via footpath commutation circuit, is connected in this power supply output and this energy-storage units;
One second path commutation circuit, is connected in this energy-storage units and this power supply output;
One integrated charge-discharge circuit, the input of this integrated charge-discharge circuit and output are connected to this first via footpath commutation circuit and this second path commutation circuit, use so that these energy-storage units charge or discharge; And
One operation control unit;
Wherein, when this input power source abnormality, this operation control unit is controlled this first via footpath commutation circuit and this second path commutation circuit toggle path, input and the output of this integrated charge-discharge circuit are connected respectively in this energy-storage units and this power supply output, and the electric energy of this energy-storage units electric discharge is sent to this power supply output via this integrated charge-discharge circuit; And when this input power is normal, this operation control unit is controlled this first via footpath commutation circuit and this second path commutation circuit toggle path, input and the output of this integrated charge-discharge circuit are connected respectively in this power supply output and this energy-storage units, and this integrated charge-discharge circuit is to this energy-storage units charging;
This integrated charge-discharge circuit comprises:
One first inductance, is connected between the input and one first link of this integrated charge-discharge circuit;
One first diode, is connected between this first link and the output of this integrated charge-discharge circuit;
One first electric capacity, is connected between the output and this common contact of this integrated charge-discharge circuit; One detects resistance;
One first switch, this first switch and this detection resistance are connected in series between this first link and this common contact; And
One charges and discharge control circuit, is connected in one end of this detection resistance, the control end of this first switch and this operation control unit, in order to control this first switch conduction or cut-off;
When this first switch conduction, the corresponding detection voltage that produces of electric current that flows through this detection resistance.
2. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 1, it is characterized in that, in discharge process, this operation control unit determines that according to the magnitude of voltage of this energy-storage units the operational mode of this integrated charge-discharge circuit is a pulse-width-modulated mode or a conduction mode.
3. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 2, it is characterized in that, in discharge process, when the magnitude of voltage of this energy-storage units is greater than the load voltage value of this DC output power, this operation control unit is controlled this integrated charge-discharge circuit with this conduction mode operation, directly the magnitude of voltage of this energy-storage units is sent to this power supply output via this integrated charge-discharge circuit.
4. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 3, it is characterized in that, in discharge process, when the magnitude of voltage of this energy-storage units is less than or equal to first critical voltage value, this operation control unit is controlled this integrated charge-discharge circuit with the operation of this pulse-width-modulated mode, is resent to this power supply output after this integrated charge-discharge circuit is boosted the magnitude of voltage of this energy-storage units.
5. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 2, it is characterized in that, in charging process, this operation control unit determines according to the magnitude of voltage of this energy-storage units whether this integrated charge-discharge circuit is resent to this energy-storage units to this energy-storage units charging with this pulse-width-modulated mode operation after the magnitude of voltage of this DC output power is boosted.
6. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 5, it is characterized in that, in charging process, when the magnitude of voltage of this energy-storage units is less than the magnitude of voltage of this DC output power, operation control unit is controlled this integrated charge-discharge circuit with this conduction mode operation, directly this DC output power is sent to this energy-storage units to this energy-storage units charging via this integrated charge-discharge circuit.
7. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 6, it is characterized in that, in charging process, when the magnitude of voltage of this energy-storage units is more than or equal to second critical voltage value, this operation control unit is controlled this integrated charge-discharge circuit with the operation of this pulse-width-modulated mode, is resent to this energy-storage units to this energy-storage units charging after this integrated charge-discharge circuit is boosted the magnitude of voltage of this DC output power.
8. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 1, is characterized in that, also comprises an output capacitance, is connected between this power supply output and this common contact.
9. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 1, it is characterized in that, this first via footpath commutation circuit and this second path commutation circuit are realized by relay, bipolar junction transistor or mos field effect transistor.
10. the DC UPS circuit with integrated charge-discharge circuit as claimed in claim 1, is characterized in that, this operation control unit comprises:
One testing circuit, is connected in the input of this AC-DC change-over circuit, in order to detect the state of this input power; And
One operation controller, be connected in the control end of this testing circuit, this first via footpath commutation circuit, control end, this integrated charge-discharge circuit and this energy-storage units of this second path commutation circuit, the DC UPS circuit operation that there is integrated charge-discharge circuit in order to control this.
The 11. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 10, is characterized in that, this operation controller is microprocessor or digital signal processor.
The 12. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 1, is characterized in that, this charges and discharge control circuit and according to this detection voltage, adjusts the duty ratio size of this first switch conduction.
The 13. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 1, is characterized in that, this first switch is bipolar junction transistor or mos field effect transistor.
14. 1 kinds of DC UPS circuit with integrated charge-discharge circuit, with so that flow power supply unit always, to supply power to a DC output power of an electronic equipment uninterrupted, it comprises:
One energy-storage units, is connected with contact altogether, in order to store electrical energy;
One first via footpath commutation circuit, is connected in feeder ear and this energy-storage units of this DC suppling equipment;
One second path commutation circuit, is connected in the feeder ear of this energy-storage units and this DC suppling equipment;
One integrated charge-discharge circuit, the input of this integrated charge-discharge circuit and output are connected to this first via footpath commutation circuit and this second path commutation circuit, use so that these energy-storage units charge or discharge; And
One operation control unit;
Wherein, when this DC output power is abnormal, this operation control unit is controlled this first via footpath commutation circuit and this second path commutation circuit toggle path, input and the output of this integrated charge-discharge circuit are connected respectively in the feeder ear of this energy-storage units and this DC suppling equipment, and the electric energy of this energy-storage units electric discharge is sent to the feeder ear of this DC suppling equipment via this integrated charge-discharge circuit;
And when this DC output power is normal, this operation control unit is controlled this first via footpath commutation circuit and this second path commutation circuit toggle path, make input and the output of this integrated charge-discharge circuit be connected respectively feeder ear and this energy-storage units in this DC suppling equipment, and this integrated charge-discharge circuit is to this energy-storage units charging;
This integrated charge-discharge circuit comprises:
One first inductance, is connected between the input and one first link of this integrated charge-discharge circuit;
One first diode, is connected between this first link and the output of this integrated charge-discharge circuit;
One first electric capacity, is connected between the output and this common contact of this integrated charge-discharge circuit; One detects resistance;
One first switch, this first switch and this detection resistance are connected in series between this first link and this common contact; And
One charges and discharge control circuit, is connected in one end of this detection resistance, the control end of this first switch and this operation control unit, in order to control this first switch conduction or cut-off;
When this first switch conduction, the corresponding detection voltage that produces of electric current that flows through this detection resistance.
The 15. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 14, it is characterized in that, in discharge process, this operation control unit determines that according to the magnitude of voltage of this energy-storage units the operational mode of this integrated charge-discharge circuit is a pulse-width-modulated mode or a conduction mode.
The 16. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 15, it is characterized in that, in discharge process, when the magnitude of voltage of this energy-storage units is greater than the load voltage value of this DC output power, this operation control unit is controlled this integrated charge-discharge circuit with this conduction mode operation, directly the magnitude of voltage of this energy-storage units is sent to the feeder ear of this DC suppling equipment via this integrated charge-discharge circuit.
The 17. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 16, it is characterized in that, in discharge process, when the magnitude of voltage of this energy-storage units is less than or equal to first critical voltage value, this operation control unit is controlled this integrated charge-discharge circuit with the operation of this pulse-width-modulated mode, is resent to the feeder ear of this DC suppling equipment after this integrated charge-discharge circuit is boosted the magnitude of voltage of this energy-storage units.
The 18. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 15, it is characterized in that, in charging process, this operation control unit determines according to the magnitude of voltage of this energy-storage units whether this integrated charge-discharge circuit is resent to this energy-storage units to this energy-storage units charging with this pulse-width-modulated mode operation after the magnitude of voltage of this DC output power is boosted.
The 19. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 18, it is characterized in that, in charging process, when the magnitude of voltage of this energy-storage units is less than the magnitude of voltage of this DC output power, operation control unit is controlled this integrated charge-discharge circuit with this conduction mode operation, directly this DC output power is sent to this energy-storage units to this energy-storage units charging via this integrated charge-discharge circuit.
The 20. DC UPS circuit with integrated charge-discharge circuit as claimed in claim 19, it is characterized in that, in charging process, when the magnitude of voltage of this energy-storage units is more than or equal to second critical voltage value, this operation control unit is controlled this integrated charge-discharge circuit with the operation of this pulse-width-modulated mode, is resent to this energy-storage units to this energy-storage units charging after this integrated charge-discharge circuit is boosted the magnitude of voltage of this DC output power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010002120.7A CN102118057B (en) | 2010-01-05 | 2010-01-05 | DC UPS circuit with integrated charge-discharge circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010002120.7A CN102118057B (en) | 2010-01-05 | 2010-01-05 | DC UPS circuit with integrated charge-discharge circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102118057A CN102118057A (en) | 2011-07-06 |
| CN102118057B true CN102118057B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010002120.7A Expired - Fee Related CN102118057B (en) | 2010-01-05 | 2010-01-05 | DC UPS circuit with integrated charge-discharge circuit |
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| CN (1) | CN102118057B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103036300A (en) * | 2011-09-29 | 2013-04-10 | 台达电子工业股份有限公司 | Renewable energy power generation system and power generation method |
| CN106532907B (en) * | 2016-09-29 | 2020-09-15 | 佛山市基源工业有限公司 | Miniature direct-current UPS (uninterrupted Power supply) and application method thereof |
| CN109950939B (en) * | 2017-12-20 | 2021-09-24 | 炬芯科技股份有限公司 | Charger state detection circuit, device circuit, and charger state detection method |
| CN116914898B (en) * | 2023-09-14 | 2024-07-19 | 卧安科技(深圳)有限公司 | Power supply circuit and power supply method of intelligent equipment and intelligent equipment |
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|---|---|---|---|---|
| US5567996A (en) * | 1995-01-30 | 1996-10-22 | Yu; Shih-Chung | AC power supply unit |
| CN1273705A (en) * | 1998-08-07 | 2000-11-15 | 松下电器产业株式会社 | Uninterruptible power system |
| CN2421767Y (en) * | 2000-04-25 | 2001-02-28 | 乔建忠 | Intelligent DC uninterruption power source |
| CN101563828A (en) * | 2006-12-19 | 2009-10-21 | 松下电器产业株式会社 | Power supply system, power supply control method of power supply system, power supply control program of power supply system, and computer readable recording medium having power supply control program |
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2010
- 2010-01-05 CN CN201010002120.7A patent/CN102118057B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5567996A (en) * | 1995-01-30 | 1996-10-22 | Yu; Shih-Chung | AC power supply unit |
| CN1273705A (en) * | 1998-08-07 | 2000-11-15 | 松下电器产业株式会社 | Uninterruptible power system |
| CN2421767Y (en) * | 2000-04-25 | 2001-02-28 | 乔建忠 | Intelligent DC uninterruption power source |
| CN101563828A (en) * | 2006-12-19 | 2009-10-21 | 松下电器产业株式会社 | Power supply system, power supply control method of power supply system, power supply control program of power supply system, and computer readable recording medium having power supply control program |
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| CN102118057A (en) | 2011-07-06 |
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