CN109104086A - A kind of DC-DC converter with power factor correction function - Google Patents
A kind of DC-DC converter with power factor correction function Download PDFInfo
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- CN109104086A CN109104086A CN201811308538.3A CN201811308538A CN109104086A CN 109104086 A CN109104086 A CN 109104086A CN 201811308538 A CN201811308538 A CN 201811308538A CN 109104086 A CN109104086 A CN 109104086A
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- transistor switch
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- storage units
- converter
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of DC-DC converters with power factor correction function, it is specifically related to converter technology field.Converter includes the first circuit, couples the zero line of AC power source；Wherein, the first power switch circuit couples zero line；Second circuit couples the neutral terminal of zero line and AC power source, and second circuit couples the first circuit；Second circuit includes the energy-storage units and the second power switch circuit of coupled in series；Wherein, energy-storage units coupling zero line and the first power switch circuit, the second power switch circuit couple neutral terminal and redundant battery；And tertiary circuit, couple the redundant battery of the first circuit, the energy-storage units of second circuit and the second power switch circuit and neutral terminal；The present invention is by the simplified improvement of line architecture, reduction production cost, raising production efficiency and the purpose present invention of upper portable use is used to be applied in uninterrupted power system.
Description
Technical field:
The present invention relates to a kind of DC-DC converters, and in particular to a kind of direct current with power factor correction function
To direct current transducer.
Background technique:
Currently, with power factor correction (Power Factor Correction, PFC) function converter application in
At present when battery mode under the 3kVA framework of uninterrupted power system (Uninterruptible Power System, UPS), in electricity
The power supply of redundant AC power source is provided for load equipments such as electric appliances incessantly in the case where net exception or power failure, to maintain electric appliance
The equipment of normal operation.Uninterrupted power system be used to maintain the key business machine such as computer, server or essence under normal conditions
The continual power supply of close instrument, prevents data degradation, communication disruption or device out of hand.
However, when the battery mode operated under 3kVA framework, most common application is uninterrupted power system (UPS) at present
Lead-acid battery is cooperated to use, and the volume of lead-acid battery is big, the service life is short, time-consuming consumption cost in maintenance, and traditional direct current is to straight
Stream (DC-to-DC) converter is push-pull type (Push-Pull) framework, different from the Boost circuit of AC network one end.
Layout area excessive on circuit board can be thus occupied, increases board substrate and processing time, and because of lead-acid battery body
Product size and increase Push-Pull route framework, therefore volume and cost for uninterrupted power system will all increase.
For this purpose, how to design a kind of DC-DC converter of improvement type, especially change what route framework simplified
The technical issues of into, volume and increased costs to solve aforementioned uninterrupted power system, be the important technology studied by the application
Point.
Summary of the invention:
For the volume and increased costs for solving the problems, such as above-mentioned uninterrupted power system；The present invention provides a kind of with power factor
The DC-DC converter of debugging functions.
What the present invention was used to provide load utility mode or battery mode does not power off power supply, with power factor correction function
The DC-DC converter of energy includes the first circuit, couples the zero line of AC power source；First circuit includes series connection coupling
The first power switch circuit and redundant battery connect；Wherein, the first power switch circuit couples zero line；
Second circuit couples the neutral terminal of zero line and AC power source, and second circuit couples the first circuit；Second
Circuit includes the energy-storage units and the second power switch circuit of coupled in series；Wherein, energy-storage units coupling zero line and first
Power switch circuit, the second power switch circuit couple neutral terminal and redundant battery；
And tertiary circuit, couple the redundant battery of the first circuit, the energy-storage units and the second power switch of second circuit
Circuit and neutral terminal；
Wherein, when AC power source is normal, AC power source provides alternating current to load by second circuit and tertiary circuit
The power supply of mode；When AC power source exception, redundant battery passes through the first power switch circuit, second circuit and tertiary circuit
The power supply of battery mode is provided to load.
Preferably, the first power switch circuit includes the first diode and the first transistor switch of coupled in series；
Wherein, the energy-storage units of first diode coupling zero line and second circuit, the first transistor switch coupling redundant battery.
Preferably, the second power switch circuit includes the second transistor of one the 4th transistor switch and coupled in series
Switch and third transistor switch；Wherein, one end coupling second transistor switch and third electricity of the 4th transistor switch
Crystal switch, the other end coupling redundant battery and tertiary circuit of the 4th transistor switch；Wherein, second transistor switchs coupling
Connect energy-storage units and tertiary circuit, third transistor switch coupling neutral terminal.
Preferably, tertiary circuit includes the second diode, third diode, first capacitor device and of coupled in series
Two capacitors；Wherein, the redundant battery of the 4th transistor of the second diode coupling second circuit and the first circuit, the three or two
Polar body couples the energy-storage units and second transistor of second circuit, and first capacitor device and the second capacitor couple neutral terminal
And the third transistor switch of second circuit.
Preferably, when operating on utility mode, and when DC-DC converter is that a positive half cycle operates:
First transistor switch OFF, second transistor switch conduction, third transistor switch conduction and the 4th transistor
Switch OFF, energy-storage units are stored energy operation；And
First transistor switch OFF, second transistor switch OFF, third transistor switch OFF and the 4th transistor
Switch OFF, energy-storage units are to release and can operate.
Preferably, when energy-storage units are stored energy operation, zero line, energy-storage units, second transistor switch, third electricity
Crystal switch and neutral terminal form the first energy storage path；And
When energy-storage units are to release to operate, zero line, energy-storage units, third diode, first capacitor device and neutrality
Line end forms first and releases energy path.
Preferably, when operating on utility mode, and when DC-DC converter is that a negative half period operates:
First transistor switch OFF, second transistor switch conduction, third transistor switch conduction and the 4th transistor
Switch OFF, energy-storage units are stored energy operation；And
First transistor switch OFF, second transistor switch OFF, third transistor switch OFF and the 4th transistor
Switch OFF, energy-storage units are to release and can operate.
Preferably, neutral terminal, third transistor switch, second transistor are opened when energy-storage units are stored energy operation
It closes, energy-storage units and zero line form one second energy storage path；And
When energy-storage units be release can operate when, neutral terminal, the second capacitor, the second diode, the 4th transistor switch,
Second transistor switch, energy-storage units and zero line form one second and release energy path.
Preferably, when operating on battery mode, and when DC-DC converter is that positive half cycle operates:
First transistor switch conduction, second transistor switch conduction, third transistor switch conduction and the 4th transistor
Switch conduction, energy-storage units are stored energy operation；And
First transistor switch conduction, second transistor switch OFF, third transistor switch conduction and the 4th transistor
Switch conduction, energy-storage units are to release and can operate.
Preferably, when energy-storage units are stored energy operation, the anode of redundant battery, the first transistor switch, the one or two
The cathode formation third energy storage road of pole pipe, energy-storage units, second transistor switch, the 4th transistor switch and redundant battery
Diameter；And
When energy-storage units are to release to operate, the anode of redundant battery, the first transistor switch, first diode, energy storage
The cathode shape of unit, third diode, first capacitor device, third transistor switch, the 4th transistor switch and redundant battery
Releasing at third can path.
Preferably, when operating on battery mode, and when DC-DC converter is that negative half period operates:
First transistor switch conduction, second transistor switch conduction, third transistor switch conduction and the 4th transistor
Switch conduction, energy-storage units are stored energy operation；And
First transistor switch conduction, second transistor switch conduction, third transistor switch conduction and the 4th transistor
Switch OFF, energy-storage units are to release and can operate.
Preferably, when energy-storage units are stored energy operation, the anode of redundant battery, the first transistor switch, the one or two
The 4th energy storage road of cathode formation of pole pipe, energy-storage units, second transistor switch, the 4th transistor switch and redundant battery
Diameter；And
When energy-storage units are to release to operate, the anode of redundant battery, the first transistor switch, first diode, energy storage
The cathode shape of unit, second transistor switch, third transistor switch, the second capacitor, the second diode and redundant battery
Releasing at the 4th can path.
Preferably, tertiary circuit further includes the 4th diode；Wherein, the 4th diode one end coupling energy-storage units,
The other end of second transistor switch and third diode, the 4th diode couples the second diode and the second capacitor.
Preferably, when operating on utility mode, and when DC-DC converter is that negative half period operates:
First transistor switch OFF, second transistor switch conduction, third transistor switch conduction and the 4th transistor
Switch OFF, energy-storage units are stored energy operation；And
First transistor switch OFF, second transistor switch OFF, third transistor switch OFF and the 4th transistor
Switch OFF, energy-storage units are to release and can operate.
Preferably, neutral terminal, third transistor switch, second transistor are opened when energy-storage units are stored energy operation
It closes, energy-storage units and zero line form the second energy storage path；And
When energy-storage units are to release to operate, neutral terminal, the second capacitor, the 4th diode, energy-storage units and fire
Line end forms the 5th and releases energy path.
Compared with prior art, the invention has the benefit that
1, when using converter of the invention, if AC power source is normal, AC power source passes through second circuit and third
Circuit provides the power supply of utility mode to load, wherein second circuit and tertiary circuit can carry out voltage to AC power source
Conversion process (such as: Boost boosting) it is supplied to load later；As AC power source it is abnormal (such as: surging, under-voltage are stopped
Electricity), the first power switch circuit of the first circuit and the second power switch circuit of second circuit can be by leading on circuit
The logical control with shutdown, the electric energy that redundant battery is exported by the first power switch circuit enter second circuit and
Tertiary circuit carries out voltage conversion process, so that redundant battery passes through the first power switch circuit, second circuit and third electricity
Road provides the power supply of battery mode to load.For this purpose, only passing through the first power switch circuit in AC power source exception
So that redundant battery carries out voltage conversion process by second circuit and tertiary circuit, without additionally independently of alternating current
Source stream is through other voltage conversion circuits (such as: Push-Pull converter) except path.
2, the improvement that the present invention is simplified by line architecture needs not take up additional circuit board volume and its wiring side
Product, it is possible to reduce board substrate and processing time, and then the technical issues of the volume and increased costs of solution uninterrupted power system,
And achieve the purpose that reduce production cost, improve production efficiency and use upper portable use.
Detailed description of the invention:
Detailed description will be given by the following detailed implementation and drawings by the present invention for ease of explanation,.
Fig. 1 is the present invention for the functional block diagram schematic diagram in uninterrupted power system；
Fig. 2 is the circuit diagram of the specific embodiment of the invention one；
Fig. 3 is the first energy storage path schematic diagram when the present invention operates on utility mode and positive half cycle operates；
First when Fig. 4 operates on utility mode and positive half cycle operation for the present invention releases energy path schematic diagram；
Fig. 5 is the second energy storage path schematic diagram when the present invention operates on utility mode and negative half period operates；
Second when Fig. 6 operates on utility mode and negative half period operation for the present invention releases energy path schematic diagram；
Fig. 7 is the third energy storage path schematic diagram when present invention operates on battery mode and positive half cycle operates；
Fig. 8 is that the third when present invention operates on battery mode and positive half cycle operates releases energy path schematic diagram；
Fig. 9 is the 4th energy storage path schematic diagram when the present invention operates on battery mode and negative half period operates；
The 4th when Figure 10 operates on battery mode and negative half period operation for the present invention releases energy path schematic diagram；
The 5th when Figure 11 operates on utility mode and negative half period operation for the present invention releases energy path schematic diagram.
Specific embodiment:
Specific embodiment one:
As shown in Figs.1 and 2, the present embodiment is applied to provide utility mode or battery mode not to load 200
Power-off power supply, with power factor correction function DC-DC converter include: the first circuit 10, second circuit 20 and
Tertiary circuit 30, wherein the zero line L of the first circuit 10 coupling AC power source；First circuit 10 includes the first of coupled in series
Power switch circuit 11 and redundant battery 12 (component labelling B1, is in the present embodiment lithium battery in such as figure)；Wherein, first
Power switch circuit 11 couples zero line.Specifically, the first power switch circuit 11 includes the first diode of coupled in series
D1 and the first transistor switch Q1；Wherein, first diode D1 couples the energy-storage units 21 of zero line L and second circuit 20
(component labelling L1 in such as figure is in the present embodiment inductor), the first transistor switch Q1 couple redundant battery B1.
Second circuit 20 couples the zero line L and neutral terminal N of AC power source, and second circuit 20 couples the first circuit
10；Second circuit 20 includes the energy-storage units 21 and the second power switch circuit 22 of coupled in series；Wherein, energy-storage units L1 coupling
It starts to exchange fire line end L and the first power switch circuit 11, the second power switch circuit 22 couples neutral terminal N and redundant battery
B1.Specifically, the second power switch circuit 22 is opened including the second transistor of the 4th transistor switch Q4 and coupled in series
Close Q2 and third transistor switch Q3；Wherein, the 4th transistor switch Q4 one end coupling second transistor switch Q2 and
The other end coupling redundant battery B1 and tertiary circuit 30 of third transistor switch Q3, the 4th transistor switch Q4；Wherein,
Two-transistor switch Q2 couples energy-storage units L1 and tertiary circuit 30, and third transistor switch Q3 couples neutral terminal N.
Tertiary circuit 30 couples the first circuit 10, second circuit 20 and neutral terminal N；Wherein, tertiary circuit 30 couples
The redundant battery B1 of first circuit 10, the energy-storage units L1 of second circuit 20 and the second power switch circuit 22.Specifically,
Tertiary circuit 30 includes the second diode D2, third diode D3, first capacitor device C1 and the second capacitor of coupled in series
C2；Wherein, the second diode D2 couples the 4th transistor switch Q4 of second circuit 20 and the redundant battery of the first circuit 10
B1, third diode D3 couple second circuit 20 energy-storage units L1 and second transistor switch Q2, first capacitor device C1 with
And second capacitor C2 coupling neutral terminal N and second circuit 20 third transistor switch Q3.
Subsidiary one mentions, and each transistor switch above-mentioned can be, such as but not limit be metal oxide semiconductcor field effect crystalline substance
Body pipe (MOSFET), bipolar junction transistors (BJT) or insulated gate bipolar transistor (IGBT).
In the embodiment of the present invention, the DC-DC converter with power factor correction function is coupling
Input filter circuit 300 is connect, can be EMI filter circuit, the noises such as electromagnetic interference of AC power source to filter out input are (such as
Shown in Fig. 1), and the DC-DC converter with power factor correction function is by coupling inverter 400 to described
Have the function of that the direct current supply of the DC-DC converter output of power factor correction carries out the conversion for Alternating Current Power Supply, and
It can be EMI filter circuit by coupling output filter circuit 500, it is miscellaneous to the electromagnetic interference of load 200 etc. to filter out output
News.Wherein, when AC power source is normal, AC power source provides city by second circuit 20 and 30 pairs of tertiary circuit loads 200
The power supply of power mode；When AC power source exception, redundant battery B1 by the first power switch circuit 11, second circuit 20 and
30 pairs of tertiary circuit loads 200 provide the power supply of battery mode.
Further, it please refers to shown in Fig. 3, Fig. 4, the DC-DC converter with power factor correction function
When operating on utility mode (when AC power source is normal), and when DC-DC converter is that positive half cycle operates:
As shown in figure 3, brilliant by the first transistor switch Q1 of control shutdown, second transistor switch Q2 conducting, third electricity
Body switch Q3 conducting and the 4th transistor switch Q4 shutdown, at this point, energy-storage units L1 is stored energy operation；When energy-storage units L1 is storage
When can operate, zero line L, energy-storage units L1, second transistor switch Q2, third transistor switch Q3 and neutral terminal N shape
First energy storage path Lns1 of pairs of energy-storage units L1 energy storage；And it as shown in figure 4, is closed by the first transistor switch Q1 of control
Disconnected, second transistor switch Q2 shutdown, third transistor switch Q3 shutdown and the 4th transistor switch Q4 are turned off, at this point, energy storage
Unit L1 is to release and can operate；When energy-storage units L1 is to release to operate, zero line L, energy-storage units L1, third diode D3, the
One capacitor C1 and neutral terminal N formation energy-storage units L1 releases the first of energy and releases energy path Lnr1.
Further, it please refers to shown in Fig. 5, Fig. 6, the DC-DC converter with power factor correction function
When operating on utility mode (when AC power source is normal), and when DC-DC converter is that negative half period operates:
As shown in figure 5, brilliant by the first transistor switch Q1 of control shutdown, second transistor switch Q2 conducting, third electricity
Body switch Q3 conducting and the 4th transistor switch Q4 shutdown, at this point, energy-storage units L1 is stored energy operation；When energy-storage units L1 is storage
When can operate, neutral terminal N, third transistor switch Q3, second transistor switch Q2, energy-storage units L1 and zero line L shape
Second energy storage path Lns2 of pairs of energy-storage units L1 energy storage.
As shown in fig. 6, brilliant by the first transistor switch Q1 of control shutdown, second transistor switch Q2 shutdown, third electricity
Body switch Q3 shutdown and the 4th transistor switch Q4 shutdown, at this point, energy-storage units L1 is to release and can operate；When energy-storage units L1 is to release
When can operate, neutral terminal N, the second capacitor C2, the second diode D2, the 4th transistor switch Q4, second transistor switch
Q2, energy-storage units L1 and zero line L formation energy-storage units L1 release the second of energy and release energy path Lnr2.Subsidiary one mentions, for storage
Can for the releasing and can operate of unit L1, since second transistor switch Q2 and the 4th transistor switch Q4 is the state turned off, because
This energy-storage units L1 release can second release can path Lnr2 system via reversed (parasitism) diode of second transistor switch Q2 with
And the 4th transistor switch Q4 reversed (parasitism) diode provided by free wheeling path reached.
Further, it please refers to shown in Fig. 7, Fig. 8, the DC-DC converter with power factor correction function
When operating on battery mode (when AC power source exception), and when DC-DC converter is that positive half cycle operates:
As shown in fig. 7, brilliant by the first transistor switch Q1 of control conducting, second transistor switch Q2 conducting, third electricity
Body switch Q3 conducting and the 4th transistor switch Q4 conducting, at this point, energy-storage units L1 is stored energy operation；When energy-storage units L1 is storage
When can operate, the anode of redundant battery B1, the first transistor switch Q1, the first diode D1, energy-storage units L1, second transistor
The cathode of switch Q2, the 4th transistor switch Q4 and redundant battery B1 form the third energy storage path to energy-storage units L1 energy storage
Lns3。
As shown in figure 8, brilliant by the first transistor switch Q1 of control conducting, second transistor switch Q2 shutdown, third electricity
Body switch Q3 conducting and the 4th transistor switch Q4 conducting, at this point, energy-storage units L1 is to release and can operate；When energy-storage units L1 is to release
It can operate, the anode of redundant battery B1, the first transistor switch Q1, first diode D1, energy-storage units L1, third diode
The cathode formation energy storage of D3, first capacitor device C1, third transistor switch Q3, the 4th transistor switch Q4 and redundant battery B1
The third that unit L1 releases energy is released can path Lnr3.
Further, it please refers to shown in Fig. 9, Figure 10, the direct current with power factor correction function converts direct current
Device is when operating on battery mode (when AC power source exception), and when DC-DC converter is that negative half period operates:
As shown in figure 9, brilliant by the first transistor switch Q1 of control conducting, second transistor switch Q2 conducting, third electricity
Body switch Q3 conducting and the 4th transistor switch Q4 conducting, at this point, energy-storage units L1 is stored energy operation；When energy-storage units L1 is storage
When can operate, the anode of redundant battery B1, the first transistor switch Q1, the first diode D1, energy-storage units L1, second transistor
The cathode of switch Q2, the 4th transistor switch Q4 and redundant battery B1 form the 4th energy storage path to energy-storage units L1 energy storage
Lns4。
As shown in Figure 10, brilliant by the first transistor switch Q1 of control conducting, second transistor switch Q2 conducting, third electricity
Body switch Q3 conducting and the 4th transistor switch Q4 shutdown, at this point, energy-storage units L1 is to release and can operate；When energy-storage units L1 is to release
It can operate, the anode of redundant battery B1, the first transistor switch Q1, the first diode D1, energy-storage units L1, second transistor are opened
The cathode for closing Q2, third transistor switch Q3, the second capacitor C2, the second diode D2 and redundant battery B1 forms energy storage list
First L1 release can the 4th release can path Lnr4.
Further, it please refers to shown in Figure 11, and is operated on shown in earlier figures 6 when utility mode and negative half period operate
Embodiment difference is, increases by the 4th diode D4, and the 4th one end diode D4 couples energy-storage units L1, second transistor switch
The other end of Q2 and third diode D3, the 4th diode D4 couple the second diode D2 and the second capacitor C2.
As shown in figure 11, brilliant by the first transistor switch Q1 of control shutdown, second transistor switch Q2 shutdown, third electricity
Body switch Q3 shutdown and the 4th transistor switch Q4 shutdown, at this point, energy-storage units L1 is to release and can operate；When energy-storage units L1 is to release
When can operate, neutral terminal N, the second capacitor C2, the 4th diode D4, energy-storage units L1 and zero line L form energy storage list
First L1 release can the 5th release can path Lnr5.Released compared to shown in fig. 6 second can path Lnr2, the 5th releases energy shown in Figure 11
Path Lnr5 avoids passing through the 4th transistor switch Q4 and second transistor switch Q2 on path, and crystalline substance can be effectively reduced
Body pipe switch conduction losses and switch cost, by the factors such as component stray resistance, parasitic capacitance influenced and caused by extra power
The delay in consumption and reaction time can further promote transfer efficiency, circuit response and reduce operating cost.
As previously mentioned, such as being handed over when using the DC-DC converter with power factor correction function of the invention
Galvanic electricity source is normal, and AC power source provides the power supply of utility mode by second circuit 20 and 30 pairs of tertiary circuit loads 200,
In, second circuit 20 and tertiary circuit 30 can carry out AC power source providing after voltage conversion process (such as: boosting)
To load；If AC power source is abnormal (such as: surging, under-voltage or power failure), the first power switch circuit 11 of the first circuit 10
And the second power switch circuit 22 of second circuit 20 can be by being connected the control with shutdown, so that redundant battery on circuit
The electric energy of B1 output can enter second circuit 20 by the first power switch circuit 11 and tertiary circuit 30 carries out voltage and turns
Processing is changed, so that redundant battery B1 is mentioned by 30 pairs of the first power switch circuit 11, second circuit 20 and tertiary circuit loads
For the power supply of battery mode.
For this purpose, only by the first power switch circuit 11, that is, redundant battery B1 may make to pass through in AC power source exception
Second circuit 20 and tertiary circuit 30 carry out voltage conversion process, without additionally independently of AC power source flow through path it
Other outer voltage conversion circuits (such as converter), the present invention pass through the improvement that route framework simplifies, and need not take up additional
Circuit board volume and its layout area, it is possible to reduce board substrate and processing time, so solve uninterrupted power system body
The technical issues of long-pending and increased costs, and reaching reduces production cost, improves production efficiency and the mesh using upper portable use
's.
In addition to this, redundant battery B1 of the present invention is not to use traditional lead-acid battery, but use lithium battery
Collocation uses, and traditional lead-acid battery has the shortcomings that volume is big, weight is heavy, service life is short, for this purpose, of the present invention have
The DC-DC converter of power factor correction function is preferable etc. with more small in size, light-weight, service life and reliability
Other advantages.
Claims (15)
1. a kind of DC-DC converter with power factor correction function, for providing utility mode or battery to load
Mode does not power off power supply, it is characterised in that: it includes the first circuit, couples the zero line of AC power source；First circuit
The first power switch circuit and redundant battery including coupled in series；Wherein, the first power switch circuit couples zero line；
Second circuit couples the neutral terminal of zero line and AC power source, and second circuit couples the first circuit；Second circuit
Energy-storage units and the second power switch circuit including coupled in series；Wherein, energy-storage units coupling zero line and the first power
Switching circuit, the second power switch circuit couple neutral terminal and redundant battery；
And tertiary circuit, couple the redundant battery of the first circuit, the energy-storage units and the second power switch circuit of second circuit
And neutral terminal；
Wherein, when AC power source is normal, AC power source provides utility mode to load by second circuit and tertiary circuit
Power supply；When AC power source exception, redundant battery is by the first power switch circuit, second circuit and tertiary circuit to negative
It carries and the power supply of battery mode is provided.
2. a kind of DC-DC converter with power factor correction function according to claim 1, feature exist
In: the first power switch circuit includes the first diode and the first transistor switch of coupled in series；Wherein, first diode
Couple the energy-storage units of zero line and second circuit, the first transistor switch coupling redundant battery.
3. a kind of DC-DC converter with power factor correction function according to claim 2, feature exist
In: the second power switch circuit includes the second transistor switch and third electricity of one the 4th transistor switch and coupled in series
Crystal switch；Wherein, one end coupling second transistor switch and third transistor switch of the 4th transistor switch, the 4th is brilliant
The other end coupling redundant battery and tertiary circuit of body pipe switch；Wherein, second transistor switch coupling energy-storage units and
Tertiary circuit, third transistor switch coupling neutral terminal.
4. a kind of DC-DC converter with power factor correction function according to claim 3, feature exist
In: tertiary circuit includes the second diode, third diode, first capacitor device and the second capacitor of coupled in series；Wherein,
Second diode couples the 4th transistor of second circuit and the redundant battery of the first circuit, the second electricity of third diode coupling
The energy-storage units and second transistor on road, first capacitor device and the second capacitor coupling neutral terminal and second circuit
Third transistor switch.
5. a kind of DC-DC converter with power factor correction function according to claim 4, feature exist
In: when operating on utility mode, and when DC-DC converter is that a positive half cycle operates:
First transistor switch OFF, second transistor switch conduction, third transistor switch conduction and the 4th transistor switch
Shutdown, energy-storage units are stored energy operation；And
First transistor switch OFF, second transistor switch OFF, third transistor switch OFF and the 4th transistor switch
Shutdown, energy-storage units are to release and can operate.
6. a kind of DC-DC converter with power factor correction function according to claim 5, feature exist
In: when energy-storage units be stored energy operation when, zero line, energy-storage units, second transistor switch, third transistor switch and in
Property line end formed the first energy storage path；And
When energy-storage units are to release to operate, zero line, energy-storage units, third diode, first capacitor device and neutral terminal
It forms first and releases energy path.
7. a kind of DC-DC converter with power factor correction function according to claim 4, feature exist
In: when operating on utility mode, and when DC-DC converter is that a negative half period operates:
First transistor switch OFF, second transistor switch conduction, third transistor switch conduction and the 4th transistor switch
Shutdown, energy-storage units are stored energy operation；And
First transistor switch OFF, second transistor switch OFF, third transistor switch OFF and the 4th transistor switch
Shutdown, energy-storage units are to release and can operate.
8. a kind of DC-DC converter with power factor correction function according to claim 7, feature exist
In: when energy-storage units be stored energy operation when, neutral terminal, third transistor switch, second transistor switch, energy-storage units and
Zero line forms one second energy storage path；And
When energy-storage units are to release to operate, neutral terminal, the second capacitor, the second diode, the 4th transistor switch, second
Transistor switch, energy-storage units and zero line form one second and release energy path.
9. a kind of DC-DC converter with power factor correction function according to claim 4, feature exist
In: when operating on battery mode, and when DC-DC converter is that positive half cycle operates:
First transistor switch conduction, second transistor switch conduction, third transistor switch conduction and the 4th transistor switch
Conducting, energy-storage units are stored energy operation；And
First transistor switch conduction, second transistor switch OFF, third transistor switch conduction and the 4th transistor switch
Conducting, energy-storage units are to release and can operate.
10. a kind of DC-DC converter with power factor correction function according to claim 9, feature exist
In: when energy-storage units be stored energy operation when, the anode of redundant battery, the first transistor switch, first diode, energy-storage units,
The cathode of second transistor switch, the 4th transistor switch and redundant battery forms third energy storage path；And
When energy-storage units be release can operate when, the anode of redundant battery, the first transistor switch, first diode, energy-storage units,
The cathode formation third of third diode, first capacitor device, third transistor switch, the 4th transistor switch and redundant battery
Releasing can path.
11. a kind of DC-DC converter with power factor correction function according to claim 4, feature exist
In: when operating on battery mode, and when DC-DC converter is that negative half period operates:
First transistor switch conduction, second transistor switch conduction, third transistor switch conduction and the 4th transistor switch
Conducting, energy-storage units are stored energy operation；And
First transistor switch conduction, second transistor switch conduction, third transistor switch conduction and the 4th transistor switch
Shutdown, energy-storage units are to release and can operate.
12. a kind of DC-DC converter with power factor correction function according to claim 11, feature
It is: when energy-storage units are stored energy operation, the anode of redundant battery, the first transistor switch, first diode, energy storage list
The 4th energy storage path of cathode formation of member, second transistor switch, the 4th transistor switch and redundant battery；And
When energy-storage units be release can operate when, the anode of redundant battery, the first transistor switch, first diode, energy-storage units,
The cathode formation the 4th of second transistor switch, third transistor switch, the second capacitor, the second diode and redundant battery
Releasing can path.
13. a kind of DC-DC converter with power factor correction function according to claim 4, feature exist
In: tertiary circuit further includes the 4th diode；Wherein, one end coupling energy-storage units, the second transistor switch of the 4th diode
And third diode, the other end of the 4th diode couple the second diode and the second capacitor.
14. a kind of DC-DC converter with power factor correction function according to claim 13, feature
It is: when operating on utility mode, and when DC-DC converter is that negative half period operates:
First transistor switch OFF, second transistor switch conduction, third transistor switch conduction and the 4th transistor switch
Shutdown, energy-storage units are stored energy operation；And
First transistor switch OFF, second transistor switch OFF, third transistor switch OFF and the 4th transistor switch
Shutdown, energy-storage units are to release and can operate.
15. a kind of DC-DC converter with power factor correction function according to claim 13, feature
Be: when energy-storage units be stored energy operation when, neutral terminal, third transistor switch, second transistor switch, energy-storage units with
And zero line forms the second energy storage path；And
When energy-storage units are to release to operate, neutral terminal, the second capacitor, the 4th diode, energy-storage units and zero line
It forms the 5th and releases energy path.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429704A (en) * | 2019-08-15 | 2019-11-08 | 亚瑞源科技（深圳）有限公司 | A kind of uninterrupted power system |
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| CN104638688A (en) * | 2013-11-07 | 2015-05-20 | 艾默生网络能源有限公司 | Single-phase uninterrupted power supply circuit and three-phase uninterrupted power supply circuit |
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| CN110429704A (en) * | 2019-08-15 | 2019-11-08 | 亚瑞源科技（深圳）有限公司 | A kind of uninterrupted power system |
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| CN109104086B (en) | 2023-10-20 |
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