CN208128137U - interface control circuit and power supply system - Google Patents
interface control circuit and power supply system Download PDFInfo
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- CN208128137U CN208128137U CN201820776962.XU CN201820776962U CN208128137U CN 208128137 U CN208128137 U CN 208128137U CN 201820776962 U CN201820776962 U CN 201820776962U CN 208128137 U CN208128137 U CN 208128137U
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- 230000001131 transforming Effects 0.000 claims description 18
- 230000003993 interaction Effects 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K Iron(III) phosphate Chemical compound 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[Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
Interface control circuit provided by the utility model and power supply system, are related to power electronics field.Wherein, the interface control circuit includes：Interface, the interface is for connecting battery system or photovoltaic system；Two-way DC/DC converting unit, one end of the two-way DC/DC converting unit is connect with the interface, the other end is used to connect the DC terminal of inverter；Control unit, the input terminal of the control unit can be connect with the battery system, output end is connect with the control terminal of the two-way DC/DC converting unit.By above-mentioned setting, can improve there are problems that being difficult to be suitable for battery system because that can only carry out one-way conduction the interface circuit of the inverter of photovoltaic system design in the prior art.
Description
Technical field
The utility model relates to power electronics fields, are in particular to a kind of interface control circuit and power supply
System.
Background technique
With the continuous popularization of environmentally protective concept, solar energy using having obtained about come more utilizations.Wherein, photovoltaic
System can convert the solar into electric energy.It is contemplated that electrical equipment is generally AC electric appliance part, and photovoltaic system one
As export is direct current.Therefore, corresponding inverter circuit can generally be arranged to be converted to the direct current for exporting photovoltaic system
Alternating current is simultaneously exported to electrical equipment.
Wherein, it is contemplated that the voltage of the direct current of the output of photovoltaic system was illuminated by the light is affected, thus, there is voltage
Value fluctuates larger problem.For this problem, DC/DC conversion circuit can be generally set in the prior art, to realize the steady of voltage
It is fixed.
Inventor it has been investigated that, since DC/DC conversion circuit in the prior art is configured according to photovoltaic system, because
And has the characteristics that one-way conduction.Therefore, when which being applied to battery system, battery system can only lead to
It crosses the circuit and inverter is discharged and cannot be completed the operation of charging, thus, cause the circuit and inverter to be difficult to be applicable in
In the battery system the problem of.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of interface control circuit, to improve needle in the prior art
Exist to the interface circuit of the inverter of photovoltaic system design because one-way conduction can only be carried out and is difficult to suitable for battery system
Problem.
To achieve the above object, the utility model embodiment adopts the following technical scheme that：
A kind of interface control circuit, including：
Interface, the interface is for connecting battery system or photovoltaic system；
Two-way DC/DC converting unit, one end of the two-way DC/DC converting unit is connect with the interface, the other end is used for
Connect the DC terminal of inverter；
Control unit, the input terminal of the control unit can connect with the battery system, output end and the two-way DC/
The control terminal of DC converting unit connects；
Wherein, when the interface is connect with the battery system, described control unit receives the battery system and sends
Electric signal, control according to the electric signal direct current that the two-way DC/DC converting unit exports the battery system into
Direct current of the row transformation processing to export the direct current of the first preset voltage value to the inverter or be exported to the inverter
Electricity carries out transformation processing to export the direct current of the second preset voltage value to the battery system；
When the interface is connect with the photovoltaic system, described control unit does not receive what the battery system was sent
Electric signal, controls the two-way DC/DC converting unit and carries out transformation to the direct current that the photovoltaic system export and handle with to institute
State the direct current that inverter exports first preset voltage value.
In the utility model embodiment preferably selects, in above-mentioned interface control circuit, the two-way DC/DC conversion
Unit includes：
Two-way DC/DC pressure unit, one end of the two-way DC/DC pressure unit is connect with the interface, the other end is used for
The DC terminal of inverter is connected, and the output end of control terminal and described control unit connects；
Two-way DC/DC boosting unit, one end of the two-way DC/DC boosting unit is connect with the interface, the other end is used for
The DC terminal of inverter is connected, and the output end of control terminal and described control unit connects；
Wherein, described control unit is also used to be exported according to the battery system, the photovoltaic system or the inverter
The voltage value of direct current control the two-way DC/DC boosting unit or two-way DC/DC pressure unit and carry out transformation and handle work.
In the utility model embodiment preferably selects, in above-mentioned interface control circuit, the two-way DC/DC decompression
Unit includes：
First switch device, the first switch device include the first triode and first diode, first triode
Collector and the anode of the interface and the cathode of the first diode be separately connected, base stage and described control unit it is defeated
Outlet connection, emitter are connect with the anode of the first diode；
Second switch device, the second switch device include the second triode and the second diode, second triode
Collector and the emitter of first triode and the cathode of second diode be separately connected, base stage and the control
The output end connection of unit, emitter are separately connected with the cathode of the interface and the anode of second diode；
First inductance element, one end of first inductance element connect with the emitter of first triode, the other end
It is connect with the anode of the DC terminal of the inverter；
First capacitor element, one end of the first capacitor element connect with the anode of the DC terminal of the inverter, are another
End is connect with the cathode of the DC terminal of the emitter of second triode and the inverter respectively.
In the utility model embodiment preferably selects, in above-mentioned interface control circuit, the two-way DC/DC boosting
Unit includes：
Second inductance element, one end of second inductance element are connect with the anode of the interface；
Third switching device, the third switching device include third transistor and third diode, the third transistor
Collector and the other end of second inductance element and the cathode of the third diode be separately connected, base stage and the control
The output end connection of unit processed, emitter are separately connected with the cathode of the interface and the anode of the third diode；
4th switching device, the 4th switching device include the 4th triode and the 4th diode, the 4th triode
Emitter and the other end of second inductance element and the anode of the 4th diode be separately connected, base stage and the control
The output end connection of unit processed, the cathode of positive and described 4th diode of the DC terminal of collector and the inverter are distinguished
Connection；
Second capacity cell, one end of second capacity cell connect with the collector of the 4th triode, the other end
It is separately connected with the cathode of the DC terminal of the emitter and inverter of the third transistor.
In the utility model embodiment preferably selects, in above-mentioned interface control circuit, further include：
Man-machine interaction unit, the man-machine interaction unit include host computer and communication module, the communication module and it is described on
Position machine and described control unit are separately connected.
The utility model embodiment additionally provides a kind of power supply system, including battery system, photovoltaic system, Interface Controller electricity
Road and inverter, the exchange end of the inverter and load connect, and the interface control circuit includes：
Interface, the interface is for connecting the battery system or the photovoltaic system；
Two-way DC/DC converting unit, one end of the two-way DC/DC converting unit is connect with the interface, the other end is used for
Connect the DC terminal of the inverter；
Control unit, the input terminal of the control unit can connect with the battery system, output end and the two-way DC/
The control terminal of DC converting unit connects；
Wherein, when the interface is connect with the battery system, described control unit receives the battery system and sends
Electric signal, control according to the electric signal direct current that the two-way DC/DC converting unit exports the battery system into
Direct current of the row transformation processing to export the direct current of the first preset voltage value to the inverter or be exported to the inverter
Electricity carries out transformation processing to export the direct current of the second preset voltage value to the battery system；
When the interface is connect with the photovoltaic system, described control unit does not receive what the battery system was sent
Electric signal, controls the two-way DC/DC converting unit and carries out transformation to the direct current that the photovoltaic system export and handle with to institute
State the direct current that inverter exports first preset voltage value.
In the utility model embodiment preferably selects, in above-mentioned power supply system, the two-way DC/DC converting unit
Including：
Two-way DC/DC pressure unit, one end of the two-way DC/DC pressure unit is connect with the interface, the other end is used for
The DC terminal of inverter is connected, and the output end of control terminal and described control unit connects；
Two-way DC/DC boosting unit, one end of the two-way DC/DC boosting unit is connect with the interface, the other end is used for
The DC terminal of inverter is connected, and the output end of control terminal and described control unit connects；
Wherein, described control unit is also used to be exported according to the battery system, the photovoltaic system or the inverter
The voltage value of direct current control the two-way DC/DC boosting unit or two-way DC/DC pressure unit and carry out transformation and handle work.
In the utility model embodiment preferably selects, in above-mentioned power supply system, the two-way DC/DC pressure unit
Including：
First switch device, the first switch device include the first triode and first diode, first triode
Collector and the anode of the interface and the cathode of the first diode be separately connected, base stage and described control unit it is defeated
Outlet connection, emitter are connect with the anode of the first diode；
Second switch device, the second switch device include the second triode and the second diode, second triode
Collector and the emitter of first triode and the cathode of second diode be separately connected, base stage and the control
The output end connection of unit, emitter are separately connected with the cathode of the interface and the anode of second diode；
First inductance element, one end of first inductance element connect with the emitter of first triode, the other end
It is connect with the anode of the DC terminal of the inverter；
First capacitor element, one end of the first capacitor element connect with the anode of the DC terminal of the inverter, are another
End is connect with the cathode of the DC terminal of the emitter of second triode and the inverter respectively.
In the utility model embodiment preferably selects, in above-mentioned power supply system, the two-way DC/DC boosting unit
Including：
Second inductance element, one end of second inductance element are connect with the anode of the interface；
Third switching device, the third switching device include third transistor and third diode, the third transistor
Collector and the other end of second inductance element and the cathode of the third diode be separately connected, base stage and the control
The output end connection of unit processed, emitter are separately connected with the cathode of the interface and the anode of the third diode；
4th switching device, the 4th switching device include the 4th triode and the 4th diode, the 4th triode
Emitter and the other end of second inductance element and the anode of the 4th diode be separately connected, base stage and the control
The output end connection of unit processed, the cathode of positive and described 4th diode of the DC terminal of collector and the inverter are distinguished
Connection；
Second capacity cell, one end of second capacity cell connect with the collector of the 4th triode, the other end
It is separately connected with the cathode of the DC terminal of the emitter and inverter of the third transistor.
In the utility model embodiment preferably selects, in above-mentioned power supply system, the interface control circuit is also wrapped
It includes：
Man-machine interaction unit, the man-machine interaction unit include host computer and communication module, the communication module and it is described on
Position machine and described control unit are separately connected.
Interface control circuit provided by the utility model and power supply system can by the setting of two-way DC/DC converting unit
To realize two-way circulating for electric current, in the application demand for meeting photovoltaic system, inverter can be made to export battery system
Direct current be converted to alternating current with drive load, can also by inverter from the alternating current that power grid obtains be converted to direct current after it is right
Battery system charges, and greatly improves the applicable ability of interface control circuit and power supply system.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
Fig. 1 is the structural block diagram of power supply system provided by the embodiment of the utility model.
Fig. 2 is the circuit diagram of inverter provided by the embodiment of the utility model.
Fig. 3 is the structural block diagram of interface control circuit provided by the embodiment of the utility model.
Fig. 4 is the circuit diagram of two-way DC/DC pressure unit provided by the embodiment of the utility model.
Fig. 5 is the circuit diagram of two-way DC/DC boosting unit provided by the embodiment of the utility model.
Fig. 6 is another structural block diagram of interface control circuit provided by the embodiment of the utility model.
Icon：10- power supply system；100- interface control circuit；110- interface；The two-way DC/DC converting unit of 130-；131-
Two-way DC/DC pressure unit；The first triode of Q1-；The second triode of Q2-；D1- first diode；The second diode of D2-；L1-
First inductance element；C1- first capacitor element；The two-way DC/DC boosting unit of 133-；Q3- third transistor；The four or three pole Q4-
Pipe；D3- third diode；The 4th diode of D4-；The second inductance element of L2-；The second capacity cell of C2-；150- control unit；
170- man-machine interaction unit；171- host computer；173- communication module；200- inverter；300- battery system；400- photovoltaic system
System.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the foregoing description of the utility model, it should be noted that the orientation of the instructions such as term " one end ", " other end "
Or positional relationship be based on the orientation or positional relationship shown in the drawings or the utility model product using when usually put
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.In addition, term " first ", " second ", " third ", " the 4th " etc. are only used for distinguishing description, and should not be understood as indicating
Or imply relative importance.
As shown in Figure 1, the utility model embodiment provides a kind of power supply system 10, it may include interface control circuit
100, inverter 200, battery system 300 and photovoltaic system 400.
Wherein, one end of the interface control circuit 100 connect with the battery system 300 or the photovoltaic system 400,
The other end is connect with the DC terminal of the inverter 200, and the exchange end of the inverter 200 is connect with load or power grid.
Further, in the present embodiment, connect in one end of the interface control circuit 100 and the battery system 300
When connecing, if the exchange end of the inverter 200 and the load connect, the battery system 300 can pass through the interface control
Circuit 100 processed carries out voltage conversion process and is powered after carrying out inversion processing by the inverter 200 to the load,
If the exchange end of the inverter 200 is connect with the power grid, the power grid can be carried out at rectification by the inverter 200
It manages and charges after carrying out voltage conversion process by the interface control circuit 100 to the battery system 300.
Also, when one end of the interface control circuit 100 is connect with the photovoltaic system 400, the inverter 200
Exchange end and the load connect, the photovoltaic system 400 can pass through the interface control circuit 100 progress voltage conversion
It handles and the load is powered after carrying out inversion processing by the inverter 200.
Optionally, the number amount and type for the electrical component that the inverter 200 includes are unrestricted, can be according to actually answering
It is configured with demand, for example, can be that three-phase alternating current or two-phase alternating current are configured according to output.In the present embodiment
In, it is illustrated so that the exchange end of the inverter 200 can export alternating current as an example.Wherein, in conjunction with Fig. 2, the inverter
200 can be the two-arm bridge inverter main circuit being made of 4 switching devices.
Optionally, the battery system 300 can be made of battery and battery management system.Wherein, the battery can be with
It is lead-acid battery, is also possible to ferric phosphate lithium cell, can also be ternary battery or super capacitor.Also, the battery is defeated
Voltage can be 50-1000V out.The battery management system can be communicated to connect with the interface control circuit 100, to realize
The interaction of data, for example, when the battery is electrically connected with the interface control circuit 100 foundation, it can be to the interface control
The transmission data of circuit 100 processed, can also be by the voltage of the battery, electricity to inform that the electrical connection of interface control circuit 100 has been established
Stream etc. real-time detections value be sent to the interface control circuit 100, in order to the battery power supply or charging control.
Optionally, the photovoltaic system 400 can be made of photovoltaic panel and photovoltaic management system.Wherein, the photovoltaic panel
Either being made of monocrystalline silicon piece, it is also possible to be made of polysilicon chip.Also, the output voltage of the photovoltaic panel can be
125-550V.The photovoltaic management system can be communicated to connect with the interface control circuit 100, to realize the interaction of data,
For example, when the photovoltaic panel is electrically connected with the interface control circuit 100 foundation, it can be by the output electricity of the photovoltaic panel
The real-time detections value such as pressure, electric current is sent to the interface control circuit 100, in order to which the power supply to the photovoltaic panel is controlled
System.
In conjunction with Fig. 3, the present embodiment also provides a kind of interface control circuit 100 that can be applied to above-mentioned power supply system 10.Its
In, the interface control circuit 100 may include interface 110, two-way DC/DC converting unit 130 and control unit 150.
Further, in the present embodiment, the interface control circuit 100 is when being applied to above-mentioned power supply system 10, institute
Interface 110 is stated to connect with the battery system 300 or the photovoltaic system 400.The one of the two-way DC/DC converting unit 130
End is connect with the interface 110, the other end is connect with the DC terminal of the inverter 200.The input terminal of described control unit 150
It is connect with the battery system 300, output end is connect with the control terminal of the two-way DC/DC converting unit 130.
Wherein, when the interface 110 is connect with the battery system 300, described control unit 150 receives the battery
The electric signal that system 300 is sent, controls the two-way DC/DC converting unit 130 to the battery system according to the electric signal
The direct currents of 300 outputs carry out transformations processing to export the direct current of the first preset voltage value or right to the inverter 200
The direct current that the inverter 200 exports carries out transformation processing to export the second preset voltage value to the battery system 300
Direct current.When the interface 110 is connect with the photovoltaic system 400, described control unit 150 does not receive the battery system
The electric signals that system 300 is sent, control direct current that the two-way DC/DC converting unit 130 exports the photovoltaic system 400 into
Row transformation is handled to export the direct current of first preset voltage value to the inverter 200.
Optionally, the type of the two-way DC/DC converting unit 130 is unrestricted, for example, either booster type,
It can be voltage-dropping type.In the present embodiment, it is contemplated that the voltage value of the output of the photovoltaic system 400 must fluctuate it is generally large,
The two-way DC/DC converting unit 130 can be buck-boost type, that is to say, that, can also be into either carry out decompression processing
Row boosting processing.
Wherein, the two-way DC/DC converting unit 130 may include two-way DC/DC pressure unit 131 and two-way DC/DC
Boosting unit 133.Also, one end of the two-way DC/DC pressure unit 131 is connect with the interface 110, the other end is for connecting
The DC terminal of inverter 200 is connect, and control terminal is connect with the output end of described control unit 150.The two-way DC/DC boosting is single
One end of member 133 is connect with the interface 110, the other end is used to connect the DC terminal of inverter 200, and control terminal and the control
The output end of unit 150 processed connects.
By above-mentioned setting, may be implemented：Described control unit 150 is according to the battery system 300, the photovoltaic system
400 or the voltage value of direct current that exports of the inverter 200 control the two-way DC/DC boosting unit 133 or two-way DC/DC
Pressure unit 131 carries out transformation and handles work.For example, the direct current of the battery system 300 output voltage value be less than it is negative
When the utilization voltage value of load, it can control the two-way DC/DC boosting unit 133 and work, it is defeated in the battery system 300
When the voltage value of direct current out is greater than the utilization voltage value of load, it can control the two-way DC/DC pressure unit 131 and carry out
Work.
Optionally, the number amount and type for the electrical component that the two-way DC/DC pressure unit 131 includes are unrestricted, can
To be configured according to practical application request.In the present embodiment, in conjunction with Fig. 4, the two-way DC/DC pressure unit 131 can be with
Including the first triode Q1, the second triode Q2, first diode D1, the second diode D2, the first inductance component L 1 and
One capacity cell C1.
Wherein, the collector of the first triode Q1 is with the positive and described first diode D1's of the interface 110
Cathode is separately connected, the output end connection of base stage and described control unit 150, emitter and the first diode D1 anode
Connection.The collector of the second triode Q2 and the emitter of the first triode Q1 and the yin of the second diode D2
Pole is separately connected, the output end connection of base stage and described control unit 150, the cathode of emitter and the interface 110 and described
The anode of second diode D2 is separately connected.The emitter of one end of first inductance component L 1 and the first triode Q1
Connection, the other end are connect with the anode of the DC terminal of the inverter 200.One end of the first capacitor element C1 with it is described inverse
Become anode connection, the other end emitter and the inverter 200 with the second triode Q2 respectively of the DC terminal of device 200
DC terminal cathode connection.
By above-mentioned setting, may be implemented：It is closed the first triode Q1 and disconnects the second triode Q2, it is described
First inductance component L 1 is powered and storage energy.Then, the first triode Q1 is disconnected, first inductance component L 1 passes through
The second diode D2 electric discharge, to realize the purpose of decompression.
Optionally, the number amount and type for the electrical component that the two-way DC/DC boosting unit 133 includes are unrestricted, can
To be configured according to practical application request.In the present embodiment, in conjunction with Fig. 5, the two-way DC/DC boosting unit 133 can be with
Including third transistor Q3, the 4th triode Q4, third diode D3, the 4th diode D4, the second inductance component L 2 and
Two capacity cell C2.
Wherein, one end of second inductance component L 2 is connect with the anode of the interface 110.The third transistor Q3
Collector and the other end of second inductance component L 2 and the cathode of the third diode D3 be separately connected, base stage and institute
State output end connection, the cathode of emitter and the interface 110 and the anode point of the third diode D3 of control unit 150
It does not connect.The emitter of the 4th triode Q4 and the other end of second inductance component L 2 and the 4th diode D4
Anode be separately connected, the connection of the output end of base stage and described control unit 150, collector and the inverter 200 direct current
The anode at end and the cathode of the 4th diode D4 are separately connected.One end and the described 4th 3 of the second capacity cell C2
The collector connection of pole pipe Q4, the emitter of the other end and the third transistor Q3 and the inverter 200 DC terminal
Cathode is separately connected.
By above-mentioned setting, may be implemented：It is closed the third transistor Q3, so that second inductance component L 2 is powered
And storage energy.Then, the third transistor Q3 is disconnected, second inductance component L 2 is by the described 4th D4 pairs of diode
The second capacity cell C2 charges, so that the voltage at the both ends the second capacity cell C2 increases, to realize boosting
Purpose.
Further, in conjunction with Fig. 6, in the present embodiment, the interface control circuit 100 can also include human-computer interaction list
Member 170.Wherein, the man-machine interaction unit 170 may include host computer 171 and communication module 173.
Also, the communication module 173 is separately connected with described control unit 150 and the host computer 171, to realize
The communication connection of host computer 171 Yu described control unit 150 is stated, in order to which operator can be right by the host computer 171
The control information of described control unit 150 is configured, for example, to first preset voltage value and second predeterminated voltage
Value is adjusted.
In conclusion interface control circuit 100 provided by the utility model and power supply system 10, are turned by two-way DC/DC
Two-way circulating for electric current may be implemented in the setting for changing unit 130, when meeting the application demand of photovoltaic system 400, can make inverse
Become device 200 and the direct current that battery system 300 exports is converted into alternating current to drive load, it can also be by inverter 200 from electricity
The alternating current that net obtains charges to battery system 300 after being converted to direct current, greatly improves interface control circuit 100
With the applicable ability of power supply system 10.
In the description of the present invention, unless otherwise clearly defined and limited, term " setting ", " connection " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or be integrally connected；It can be mechanical connection,
It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
It is logical.For the ordinary skill in the art, above-mentioned term in the present invention specific can be understood with concrete condition
Meaning.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of interface control circuit, which is characterized in that including：
Interface, the interface is for connecting battery system or photovoltaic system；
Two-way DC/DC converting unit, one end of the two-way DC/DC converting unit is connect with the interface, the other end is for connecting
The DC terminal of inverter；
Control unit, the input terminal of the control unit can be connect with the battery system, output end and the two-way DC/DC turn
Change the control terminal connection of unit；
Wherein, when the interface is connect with the battery system, described control unit receives the electricity that the battery system is sent
Signal controls the direct current that the two-way DC/DC converting unit exports the battery system according to the electric signal and becomes
Pressure processing with to the inverter export the first preset voltage value direct current or to the inverter export direct current into
Row transformation is handled to export the direct current of the second preset voltage value to the battery system；
When the interface is connect with the photovoltaic system, described control unit does not receive the telecommunications that the battery system is sent
Number, it controls the two-way DC/DC converting unit transformation is carried out to the direct current that the photovoltaic system export and handle with to described inverse
Become the direct current that device exports first preset voltage value.
2. interface control circuit according to claim 1, which is characterized in that the two-way DC/DC converting unit includes：
Two-way DC/DC pressure unit, one end of the two-way DC/DC pressure unit is connect with the interface, the other end is for connecting
The DC terminal of inverter, and the output end of control terminal and described control unit connects；
Two-way DC/DC boosting unit, one end of the two-way DC/DC boosting unit is connect with the interface, the other end is for connecting
The DC terminal of inverter, and the output end of control terminal and described control unit connects；
Wherein, described control unit is also used to be exported according to the battery system, the photovoltaic system or the inverter straight
The voltage value of galvanic electricity controls the two-way DC/DC boosting unit or two-way DC/DC pressure unit carries out transformation and handles work.
3. interface control circuit according to claim 2, which is characterized in that the two-way DC/DC pressure unit includes：
First switch device, the first switch device include the first triode and first diode, the collection of first triode
The anode of electrode and the interface and the cathode of the first diode be separately connected, the output end of base stage and described control unit
Connection, emitter are connect with the anode of the first diode；
Second switch device, the second switch device include the second triode and the second diode, the collection of second triode
The emitter of electrode and first triode and the cathode of second diode be separately connected, base stage and described control unit
Output end connection, emitter is separately connected with the cathode of the interface and the anode of second diode；
First inductance element, one end of first inductance element connect with the emitter of first triode, the other end and institute
State the anode connection of the DC terminal of inverter；
First capacitor element, one end of the first capacitor element is connect with the anode of the DC terminal of the inverter, the other end divides
It is not connect with the cathode of the DC terminal of the emitter of second triode and the inverter.
4. interface control circuit according to claim 2, which is characterized in that the two-way DC/DC boosting unit includes：
Second inductance element, one end of second inductance element are connect with the anode of the interface；
Third switching device, the third switching device include third transistor and third diode, the collection of the third transistor
The cathode of the other end and the third diode of electrode and second inductance element is separately connected, base stage and the control are single
The output end connection of member, emitter are separately connected with the cathode of the interface and the anode of the third diode；
4th switching device, the 4th switching device include the 4th triode and the 4th diode, the hair of the 4th triode
The anode of the other end and the 4th diode of emitter-base bandgap grading and second inductance element is separately connected, base stage and the control are single
The output end connection of member, the cathode of collector and positive and described 4th diode of the DC terminal of the inverter connect respectively
It connects；
Second capacity cell, one end of second capacity cell connect with the collector of the 4th triode, the other end and institute
The cathode for stating the emitter of third transistor and the DC terminal of the inverter is separately connected.
5. interface control circuit according to any one of claims 1-4, which is characterized in that further include：
Man-machine interaction unit, the man-machine interaction unit include host computer and communication module, the communication module and the host computer
It is separately connected with described control unit.
6. a kind of power supply system, which is characterized in that described including battery system, photovoltaic system, interface control circuit and inverter
The exchange end of inverter and load connect, and the interface control circuit includes：
Interface, the interface is for connecting the battery system or the photovoltaic system；
Two-way DC/DC converting unit, one end of the two-way DC/DC converting unit is connect with the interface, the other end is for connecting
The DC terminal of the inverter；
Control unit, the input terminal of the control unit can be connect with the battery system, output end and the two-way DC/DC turn
Change the control terminal connection of unit；
Wherein, when the interface is connect with the battery system, described control unit receives the electricity that the battery system is sent
Signal controls the direct current that the two-way DC/DC converting unit exports the battery system according to the electric signal and becomes
Pressure processing with to the inverter export the first preset voltage value direct current or to the inverter export direct current into
Row transformation is handled to export the direct current of the second preset voltage value to the battery system；
When the interface is connect with the photovoltaic system, described control unit does not receive the telecommunications that the battery system is sent
Number, it controls the two-way DC/DC converting unit transformation is carried out to the direct current that the photovoltaic system export and handle with to described inverse
Become the direct current that device exports first preset voltage value.
7. power supply system according to claim 6, which is characterized in that the two-way DC/DC converting unit includes：
Two-way DC/DC pressure unit, one end of the two-way DC/DC pressure unit is connect with the interface, the other end is for connecting
The DC terminal of inverter, and the output end of control terminal and described control unit connects；
Two-way DC/DC boosting unit, one end of the two-way DC/DC boosting unit is connect with the interface, the other end is for connecting
The DC terminal of inverter, and the output end of control terminal and described control unit connects；
Wherein, described control unit is also used to be exported according to the battery system, the photovoltaic system or the inverter straight
The voltage value of galvanic electricity controls the two-way DC/DC boosting unit or two-way DC/DC pressure unit carries out transformation and handles work.
8. power supply system according to claim 7, which is characterized in that the two-way DC/DC pressure unit includes：
First switch device, the first switch device include the first triode and first diode, the collection of first triode
The anode of electrode and the interface and the cathode of the first diode be separately connected, the output end of base stage and described control unit
Connection, emitter are connect with the anode of the first diode；
Second switch device, the second switch device include the second triode and the second diode, the collection of second triode
The emitter of electrode and first triode and the cathode of second diode be separately connected, base stage and described control unit
Output end connection, emitter is separately connected with the cathode of the interface and the anode of second diode；
First inductance element, one end of first inductance element connect with the emitter of first triode, the other end and institute
State the anode connection of the DC terminal of inverter；
First capacitor element, one end of the first capacitor element is connect with the anode of the DC terminal of the inverter, the other end divides
It is not connect with the cathode of the DC terminal of the emitter of second triode and the inverter.
9. power supply system according to claim 7, which is characterized in that the two-way DC/DC boosting unit includes：
Second inductance element, one end of second inductance element are connect with the anode of the interface；
Third switching device, the third switching device include third transistor and third diode, the collection of the third transistor
The cathode of the other end and the third diode of electrode and second inductance element is separately connected, base stage and the control are single
The output end connection of member, emitter are separately connected with the cathode of the interface and the anode of the third diode；
4th switching device, the 4th switching device include the 4th triode and the 4th diode, the hair of the 4th triode
The anode of the other end and the 4th diode of emitter-base bandgap grading and second inductance element is separately connected, base stage and the control are single
The output end connection of member, the cathode of collector and positive and described 4th diode of the DC terminal of the inverter connect respectively
It connects；
Second capacity cell, one end of second capacity cell connect with the collector of the 4th triode, the other end and institute
The cathode for stating the emitter of third transistor and the DC terminal of the inverter is separately connected.
10. according to power supply system described in claim 6-9 any one, which is characterized in that the interface control circuit also wraps
It includes：
Man-machine interaction unit, the man-machine interaction unit include host computer and communication module, the communication module and the host computer
It is separately connected with described control unit.
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| CN201820776962.XU CN208128137U (en) | 2018-05-23 | 2018-05-23 | interface control circuit and power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535342A (en) * | 2019-08-13 | 2019-12-03 | 深圳市普威技术有限公司 | A kind of voltage-operated device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535342A (en) * | 2019-08-13 | 2019-12-03 | 深圳市普威技术有限公司 | A kind of voltage-operated device and system |
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