CN109039284A - A kind of solar photovoltaic assembly IV characteristic test device - Google Patents
A kind of solar photovoltaic assembly IV characteristic test device Download PDFInfo
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- CN109039284A CN109039284A CN201810793721.0A CN201810793721A CN109039284A CN 109039284 A CN109039284 A CN 109039284A CN 201810793721 A CN201810793721 A CN 201810793721A CN 109039284 A CN109039284 A CN 109039284A
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- 238000012360 testing method Methods 0.000 title claims abstract description 74
- 238000004088 simulation Methods 0.000 claims abstract description 31
- 229910052724 xenon Inorganic materials 0.000 claims description 77
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 77
- 239000003990 capacitor Substances 0.000 claims description 29
- 239000005341 toughened glass Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 4
- 238000013480 data collection Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 claims description 2
- 230000036039 immunity Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- PDWBGRKARJFJGI-UHFFFAOYSA-N 2-phenylcyclohexa-2,4-dien-1-one Chemical compound O=C1CC=CC=C1C1=CC=CC=C1 PDWBGRKARJFJGI-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
- H02S50/15—Testing of PV devices, e.g. of PV modules or single PV cells using optical means, e.g. using electroluminescence
-
- 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
Abstract
The invention discloses a kind of solar photovoltaic assembly IV characteristic test devices, include display terminal, sunlight simulation test bench and industrial personal computer, display terminal is connect with the industrial personal computer in sunlight simulation test bench, industrial personal computer is connect with the data acquisition board being located in sunlight simulation test bench, and data acquisition board is electrically connected with the sunlight simulation system being located in sunlight simulation test bench.The present invention, which by sunlight simulation system simulates sunlight and treats shoot the sun energy photovoltaic module, to be shown to be irradiated, the data such as the electric current of solar photovoltaic assembly output to be measured, the temperature of voltage and assembly surface are acquired by data acquisition board, and data will be collected and be sent to industrial personal computer, related data is calculated by industrial personal computer and draws out PV-IV curve, is finally shown in display terminal.The present invention has many advantages, such as that small signal acquisition distortion rate, strong interference immunity, noise are low, acquisition precision is high, at low cost.
Description
Technical field
The present invention relates to photovoltaic detection technique fields, particularly relate to a kind of solar photovoltaic assembly IV characteristic test
Device.
Background technique
Acquisition card special pair and solar energy are generallyd use in the current system for solar photovoltaic assembly IV test
Volt component correlation includes that the data such as voltage, electric current, temperature, light intensity are acquired, and this acquisition card special is used to carry out data
When acquisition, usually there are the following problems: (1) system cost is high；(2) data acquisition generallys use amplifier and does signal amplification, amplifies
Multiple is small, is distorted larger；(3) amplification factor switching generallys use analog switch and switches different resistance to complete, poor linearity,
Influence entire precision；(4) for capture card using two-panel design, signal interference and noise are big.
Summary of the invention
That the purpose of the present invention is to provide a kind of distorted signals is small, noise is low, strong interference immunity, accuracy of data acquisition are high,
The low solar photovoltaic assembly IV characteristic test device of manufacturing cost, to solve the problems, such as in background technique.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of solar photovoltaic assembly IV characteristic test dress
It sets, includes display terminal, sunlight simulation test bench and industrial personal computer, the sunlight simulation test bench includes cabinet, described
Electric control room and sunlight simulating chamber are equipped in cabinet, the electric control room and the sunlight simulating chamber pass through vertical clapboard
Separate, first layer light tempered glass has been horizontally set in the middle part of the sunlight simulating chamber, it is horizontal at the top of the sunlight simulating chamber
Equipped with the second layer light tempered glass, the sunlight simulating chamber is separated into upper layer and overflow instead by the first layer light tempered glass
Room and lower layer's diffusing reflection room are penetrated, the industrial personal computer is located in the electrical control room, and the display terminal is located at the sunlight
Outside simulation test bench, the display terminal is connect with the industrial personal computer by data line；
Be additionally provided in the electrical control room xenon lamp control panel, data acquisition board, the first charging panel, the second charging panel,
First driving plate, the second driving plate, 24V Switching Power Supply, the first super capacitor group, the second super capacitor group, isolating transformer,
220V turns 12V transformer, upper mounted plate, bottom plate and capacitor frame, and fixed plate is fixed on the vertical clapboard top, institute
It states bottom plate and is fixed on the vertical clapboard lower part, the xenon lamp control panel, data acquisition board, the first driving plate, the second driving
Plate is each attached on fixed plate, the 24V Switching Power Supply, 220V turn 12V transformer and capacitor frame be each attached to it is lower solid
On fixed board, first super capacitor group and the second super capacitor group are each attached on the capacitor frame, first charging panel
It is fixed by the bracket above first driving plate, second charging panel is fixed by the bracket in second driving plate
Side；
In lower layer's diffusing reflection room be equipped with xenon lamp frame, the xenon lamp frame upper support the first layer light tempering
The both ends of glass, xenon lamp frame lower part are arranged with the first xenon lamp housing and the second xenon lamp housing, are equipped in first xenon lamp housing
First xenon lamp is equipped with the second xenon lamp in second xenon lamp housing；
First xenon lamp is electrically connected with first driving plate, and first driving plate is electrically connected with first charging panel
It connects, second charging panel is electrically connected with the xenon lamp control panel, and first super capacitor group charges with described first respectively
Plate and the electrical connection of the first driving plate；
Second xenon lamp is electrically connected with second driving plate, and second driving plate is electrically connected with second charging panel
Connect, second charging panel is electrically connected with the xenon lamp control panel, second super capacitor group respectively with the second charging panel and
The electrical connection of second driving plate；
The xenon lamp control panel is connect by winding displacement with the xenon lamp drive control interface that the data acquisition board is equipped with；
The industrial personal computer is connect by RS232 bus with the RS232 interface that the data acquisition board is equipped with；
The input terminal that the isolating transformer and 220V turn 12V transformer is electrically connected with the outside city 220V, and the isolation becomes
Depressor output end correspondence is electrically connected with the 24V Switching Power Supply, the 220V turn 12V transformer output end correspond to it is described
The auxiliary power interface connection that data acquisition board is equipped with；
The 24V Switching Power Supply also drives with the xenon lamp control panel, the first charging panel, the second charging panel, first respectively
Plate and the electrical connection of the second driving plate.
In above-mentioned technical proposal, be arranged on the both ends side wall of upper layer diffusing reflection room the first irradiance sensor and
Second irradiance sensor, first irradiance sensor and the second irradiance sensor are set in the data acquisition board
Some irradiance sensor interface electrical connections；
Infrared temperature sensor is also fixed with by gantry support right above the second layer light tempered glass, it is described
Gantry support is fixedly connected or separates with sunlight simulation test bench, and the infrared temperature sensor and the infrared temperature sense
Device interface is electrically connected.
In above-mentioned technical proposal, the first microcontroller chip, the second miniature control are additionally provided in the data acquisition board
Device chip, D/A module, division module, diverter module, electronic load module, power interface, infrared temperature sensor interface and four
Line module testing interface, the first microcontroller chip respectively with the second microcontroller chip, division module,
Diverter module, power interface, xenon lamp drive control interface, RS232 interface, irradiance sensor interface, infrared temperature sensor
Interface and auxiliary power interface are electrically connected, and the second microcontroller chip and the D/A module are electrically connected, the DA
Module and the electronic load module are electrically connected, the electronic load module respectively with the diverter module and four-wire system component
Test interface is electrically connected, and the four-wire system module testing interface is respectively with the division module and setting in the second layer light steel
The solar photovoltaic assembly to be measured for changing glass top is electrically connected.
In above-mentioned technical proposal, floor push interface, the floor push interface are additionally provided in the data acquisition board
Respectively with the first microcontroller chip and be arranged in sunlight simulation test bench bottom floor push be electrically connected.
In above-mentioned technical proposal, there are two the first radiator fans, two the second radiation airs in the electrical control room
Fan and two third radiator fans, two first radiator fans are each attached to first charging panel and the first driving plate
Side, two second radiator fans are each attached to the side of second charging panel and the second driving plate, described two
A third radiator fan sets up separately on two inner sidewalls of the electric control room, each first radiator fan, the second heat dissipation
Fan and third radiator fan correspondence are electrically connected with the outside city 22V.
In above-mentioned technical proposal, the division module includes the first relay driving, the first signal grade relay, the second letter
Number grade relay, third signal grade relay, the first precision resistance, the second precision resistance, third precision resistance, first accurate point
Piezoresistance, the second accurate divider resistance, the first programmable instrumentation amplifier and voltage filtering circuit；
The input terminal of first relay driving is connect with the first microcontroller chip, first relay
The output end of driving is defeated with the first signal grade relay, second signal grade relay and third signal grade relay respectively
Enter end connection；
First precision resistance is in parallel with the second precision resistance, and first precision resistance and the second precision resistance are together
Connection end is connect with the output end of the first signal grade relay, first precision resistance and another parallel connected end of the second precision resistance and
The input terminal of the second signal grade relay connects；
The input terminal of the first programmable instrumentation amplifier divides with the described first accurate divider resistance, the second precision respectively
The output end of piezoresistance, third precision resistance and second signal grade relay connects, the first programmable instrumentation amplifier
Output end connect respectively with the input terminal of the input terminal of the voltage filtering circuit and the first signal grade relay, the voltage
The output end of filter circuit is connect with the first microcontroller chip；
The output end of the second signal grade relay is also connect with the third precision resistance, the described first accurate partial pressure
Resistance and the second accurate divider resistance are also connect with the input terminal of the third signal grade relay, the third signal grade after
The output end correspondence of electric appliance is connect with the voltage negative terminal in the four-wire system module testing interface, and the four-wire system component is surveyed
The positive polarity terminal in mouth of trying is connect with the described first accurate divider resistance and the second accurate divider resistance respectively.
In above-mentioned technical proposal, the diverter module includes the second relay driving, fourth signal grade relay, the 5th letter
Number grade relay, the 6th signal grade relay, the 4th precision resistance, the 5th precision resistance, the 6th precision resistance, first accurate point
Flow device, the second accurate current divider, the second programmable instrumentation amplifier and current filtering circuit；
The input terminal of second relay driving is connect with the first microcontroller chip, second relay
The output end of driving is defeated with the fourth signal grade relay, the 5th signal grade relay and the 6th signal grade relay respectively
Enter end connection；
4th precision resistance is in parallel with the 5th precision resistance, and the 4th precision resistance and the 5th precision resistance are together
Connection end is connect with the output end of the fourth signal grade relay, the input of another parallel connected end and the 5th signal grade relay
End connection；
The input terminal of the second programmable instrumentation amplifier is believed with the 6th precision resistance and the described 5th respectively
The connection of the output end of number grade relay and the 6th signal grade relay, the output end difference of the second programmable instrumentation amplifier
It is connect with the input terminal of the input terminal of the current filtering circuit and fourth signal grade relay；
The output end of the 5th signal grade relay is also connect with the 6th precision resistance, the 6th signal grade after
The input terminal of the electric appliance also input terminal with the described first accurate current divider and the second accurate current divider respectively；Connection；
The electronic load module includes accessory power supply, the first MOS transistor, the second MOS transistor and the 7th signal grade
Relay, the accessory power supply correspondence are connect with the electric current positive terminal in four-wire system module testing interface, the four-wire system group
Electric current negative terminal in part test interface is connect with the input terminal of first MOS transistor and the second MOS transistor respectively,
The input terminal of first MOS transistor and the second MOS transistor also output end with the 7th signal grade relay respectively
Connection, the input terminal of the 7th signal grade relay connect with the output end of the D/A module and the second relay driving respectively
It connects, the output end of first MOS transistor is connect with the input terminal of the described first accurate current divider, the 2nd MOS crystal
The output end of pipe is connect with the input terminal of the described second accurate current divider.
In above-mentioned technical proposal, four universal wheels are additionally provided in sunlight simulation test bench bottom, in the sun
It is additionally provided with a key switch and an emergency stop switch at the top of optical analog testboard and positioned at the outer roof of electric control room, it is described
Key switch and emergency stop switch are corresponded to electrically to be connect with the 24V Switching Power Supply.
In above-mentioned technical proposal, first, second irradiance sensor by four chip sizes is 3mm*40mm, power is
The small photovoltaic cell series welding of 0.1W, and encapsulated through dripping glue, the first microcontroller chip uses model
STM32F407 controller chip, the second microcontroller chip uses model STM32F103 controller chip, described
Infrared temperature sensor uses the infrared temperature sensor of model IRTP300L.
In above-mentioned technical proposal, the data acquisition board be four layers of pcb board structure, the first microcontroller chip,
Second microcontroller chip, D/A module, division module, diverter module, electronic load module, power interface, xenon lamp driving control
Interface, RS232 interface, irradiance sensor interface, infrared temperature sensor interface, four-wire system module testing interface and auxiliary processed
Power interface is arranged on the outermost layer pcb board of the data acquisition board.
The working principle of solar photovoltaic assembly IV characteristic test device provided by the invention are as follows:
It first passes through xenon lamp to simulate sunlight and be transported on solar photovoltaic assembly surface to be measured, when the sun to be measured
Can the surface of photovoltaic module receive after xenon lamp simulates sun optical signal, the solar battery in solar photovoltaic assembly to be measured
The optical signal received is converted to electric signal output data collection plate by sector-meeting, and irradiance sensor can will sense at the same time
The sunlight simulated by xenon lamp light intensity signal be converted to electric signal and export to data acquisition board, infrared temperature sensor
The temperature signal on the solar photovoltaic assembly surface to be measured sensed can be converted to electric signal and be conveyed to data acquisition board,
Then electric current, voltage and the component exported collected solar photovoltaic assembly to be measured by data acquisition board
The temperature and xenon lamp on surface simulate the data such as sun light signal strength and are sent in industrial personal computer, and pass through setting in industrial personal computer
Specific program is analyzed these data, is handled, is calculated, and PV-IV curve is drawn out；
Finally by display terminal by industrial personal computer through analysis, processing, calculating, the PV-IV curve drawn out is shown.
Compared with prior art, advantages of the present invention is as follows:
(1) present invention in substituted using embedded collection of simulant signal scheme traditional data acquisition board acquisition scheme come into
The acquisition of row solar photovoltaic assembly IV signal, effectively reduces system manufacturing cost；
(2) data acquisition board carries out signal amplification using programmable instrumentation amplifier, improves amplification factor, reduces
Signal acquiring system distortion；
(3) because the contact resistance of signal grade relay is small, signal can be decayed and is preferably minimized, therefore data acquisition board uses
Signal grade relay controls the switching of current or voltage amplification factor as signal shift switch, substantially increases the acquisition of data
Precision；
(4) data acquisition board is designed using four-sheet structure, effectively reduces interference and the noise of signal；
(5) sunlight simulation test bench is designed using two layers of diffuse-reflective cavity and two layers of light tempered glass, it is ensured that be measured
The solar simulation optical signal uniformity that solar photovoltaic assembly surface receives is surveyed so as to avoid because of uneven illumination bring
Trueness error is tried, and then guarantees the accuracy of data acquisition of data acquisition board；
(6) industrial personal computer is arranged in sunlight simulation test bench, avoids each data connection of industrial personal computer external, is readily transported,
Installation, improves service life.
Detailed description of the invention
Fig. 1 is the configuration schematic diagram of solar photovoltaic assembly IV characteristic test device of the present invention；
Fig. 2 is electric control room schematic diagram of internal structure；
Fig. 3 is the sectional perspective structure chart of sunlight simulation test bench；
Fig. 4 is the electric control theory block diagram of solar photovoltaic assembly IV characteristic test device of the present invention；
Fig. 5 is the schematic block circuit diagram of data acquisition board；
Fig. 6 is the functional block diagram of division module；
Fig. 7 is the functional block diagram of diverter module and electronic load module；
In figure: 1, display terminal；2, sunlight simulation test bench；2.1, cabinet；2.2, electric control room；2.3, sunlight
Simulating chamber；2.3a, upper layer diffusing reflection room；2.3b, lower layer's diffusing reflection room；, 2.4, vertical clapboard；3, industrial personal computer；4, first layer light
Tempered glass；5, the second layer light tempered glass；6, xenon lamp control panel 7, data acquisition board；7.1, the first microcontroller core
Piece；7.2, the second microcontroller chip；7.3, D/A module；7.4, division module；7.5, diverter module；7.6, electronic load mould
Block；7.7, power interface；7.8, xenon lamp drive control interface；7.9, RS232 interface；7.10, irradiance sensor interface；
7.11, infrared temperature sensor interface；7.12, four-wire system module testing interface；7.13, auxiliary power interface；7.14, it rides and opens
Close interface；8, the first charging panel；9, the second charging panel；10, the first driving plate；11, the second driving plate；12,24V Switching Power Supply；
13, the first super capacitor group；14, the second super capacitor group；15, isolating transformer；16,220V turns 12V transformer；17, upper solid
Fixed board；18, bottom plate；19, capacitor frame；20, the first irradiance sensor；21, the second irradiance sensor；22, xenon lamp frame；
23, the first xenon lamp housing；24, the second xenon lamp housing；25, the first xenon lamp；26, the second xenon lamp；27, solar photovoltaic assembly to be measured；28,
Gantry support；29, infrared temperature sensor；30, floor push；31, the first radiator fan；32, the second radiator fan；33,
Three radiator fans；34, universal wheel；35, key switch；36, emergency stop switch.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
The drawings and specific embodiments, how the present invention is further explained implements.
As shown in figures 1 and 3, a kind of solar photovoltaic assembly IV characteristic test device provided by the invention includes display
Terminal 1, sunlight simulation test bench 2 and industrial personal computer 3；
Wherein, sunlight simulation test bench 2 includes cabinet 2.1, and electric control room 2.2 and the sun are equipped in cabinet 2.1
Optical analog room 2.3, electric control room 2.2 is separated with sunlight simulating chamber 2.3 by vertical clapboard 2.4, in sunlight simulating chamber 2.3
Middle part has been horizontally set with first layer light tempered glass 4, and the second layer light tempered glass 5 has been horizontally set at the top of sunlight simulating chamber 2.3,
Sunlight simulating chamber 2.3 is separated into upper layer diffusing reflection room 2.3a and lower layer's diffusing reflection room 2.3b by first layer light tempered glass 4,
Industrial personal computer 3 is located in electric control room 2.2, and display terminal 1 is located at outside sunlight simulation test bench 2, display terminal 1 and industry control
Machine 3 is connected by data line；
As shown in Fig. 2, be additionally provided in electric control room 2.2 xenon lamp control panel 6, data acquisition board 7, the first charging panel 8,
Second charging panel 9, the first driving plate 10, the second driving plate 11,24V Switching Power Supply 12, the first super capacitor group 13, second are super
Capacitance group 14, isolating transformer 15,220V turn 12V transformer 16, upper mounted plate 17, bottom plate 18 and capacitor frame 19, upper solid
Fixed board 17 is fixed on 2.4 top of vertical clapboard, and bottom plate 18 is fixed on 2.4 lower part of vertical clapboard, xenon lamp control panel 6, data acquisition
Plate 7, the first driving plate 10, the second driving plate 11 are each attached on upper mounted plate 17, and 24V Switching Power Supply 12,220V turn 12V transformation
Device 16 and capacitor frame 19 are each attached on bottom plate 18, and the first super capacitor group 13 and the second super capacitor group 14 are each attached to
On capacitor frame 19, the first charging panel 8 is fixed on 10 top of the first driving plate, the second charging panel 9 by bracket (not shown)
11 top of the second driving plate is fixed on by bracket (not shown)；
As shown in figures 1 and 3, be equipped with xenon lamp frame 22 in lower layer's diffusing reflection room 2.3b, 22 upper support of xenon lamp frame the
One layer of equal light tempered glass 4, the both ends of 22 lower part of xenon lamp frame are arranged with the first xenon lamp housing 23 and the second xenon lamp housing 24, in the first xenon
It is equipped with the first xenon lamp 25 in lampshade 23, the second xenon lamp 26 is equipped in the second xenon lamp housing 24；
As shown in figure 4, the first xenon lamp 25 is electrically connected with the first driving plate 10,8 electricity of the first driving plate 10 and the first charging panel
Connection, the second charging panel 8 are electrically connected with xenon lamp control panel 6, and the first super capacitor group 13 is driven with the first charging panel 8 and first respectively
Movable plate 10 is electrically connected；Second xenon lamp 26 is electrically connected with the second driving plate 11, and the second driving plate 11 is electrically connected with the second charging panel 9,
Second charging panel 9 is electrically connected with xenon lamp control panel 6, the second super capacitor group 13 respectively with the second charging panel 9 and the second driving plate
11 electrical connections；
As shown in figure 5, the xenon lamp drive control interface 7.8 that xenon lamp control panel 6 is equipped with by winding displacement and data acquisition board 7
Connection；Industrial personal computer 3 is connect by RS232 bus with the RS232 interface 7.9 that data acquisition board 7 is equipped with；As shown in figure 4, isolation
The input terminal that transformer 15 and 220V turn 12V transformer 16 is electrically connected with the outside city 220V, the output end pair of isolating transformer 15
It should be electrically connected with 24V Switching Power Supply 12, the output end correspondence that 220V turns 12V transformer 16 is equipped with auxiliary with data acquisition board 7
Power interface 7.13 is helped to connect；24V Switching Power Supply 12 also respectively with xenon lamp control panel 6, the first charging panel 8, the second charging panel 9,
First driving plate 10 and the electrical connection of the second driving plate 11.
As depicted in figs. 1 and 2, the first irradiance sensor 20 is arranged on the both ends side wall of upper layer diffusing reflection room 2.3a
With the second irradiance sensor 21, the first irradiance sensor 20 and the second irradiance sensor 21 are and in data acquisition board 7
The irradiance sensor interface 7.10 being equipped with is electrically connected；
Infrared temperature sensor 29, root are also fixed with by gantry support 28 right above the second layer light tempered glass 5
Factually border attracts, and gantry support 28 can be fixedly connected with sunlight simulation test bench 2 or separately positioned, infrared temperature sensor 29
It is electrically connected with infrared temperature sensor interface 7.11.
As described in Figure 5, the first microcontroller chip 7.1, the second microcontroller chip are additionally provided in data acquisition board 7
7.2, D/A module 7.3, division module 7.4, diverter module 7.5, electronic load module 7.6, power interface 7.7, infrared temperature pass
Sensor interface 7.11 and four-wire system module testing interface 7.12, wherein the first microcontroller chip 7.1 is miniature with second respectively
Controller chip 7.2, division module 7.4, diverter module 7.5, power interface 7.7, xenon lamp drive control interface 7.8, RS232 connect
Mouth 7.9, irradiance sensor interface 7.10, infrared temperature sensor interface 7.11 and auxiliary power interface 7.13 are electrically connected,
Second microcontroller chip 7.2 is electrically connected with D/A module 7.3, and D/A module 7.3 and electronic load module 7.6 are electrically connected,
Electronic load module 7.6 is electrically connected with diverter module 7.5 and four-wire system module testing interface 7.12 respectively, and four-wire system component is surveyed
With division module 7.4 and the photovoltaic group to be measured at the second layer top of light tempered glass 5 is arranged in respectively in mouth 7.12 of trying
Part 27 is electrically connected.
As shown in Figure 1 and Figure 5, floor push interface 7.14, floor push interface 7.14 are additionally provided in data acquisition board 7
Respectively with the first microcontroller chip 7.1 and be arranged in 2 bottom of sunlight simulation test bench floor push 30 be electrically connected,
See as shown in Figure 1.
As shown in Fig. 2, there are two 31, two the second radiator fans 32 of the first radiator fan in electric control room 2.2
And two third radiator fans 33, two the first radiator fans 31 are each attached to the one of the first charging panel 8 and the first driving plate 10
Side, two the second radiator fans 32 are each attached to the side of the second charging panel 9 and the second driving plate 11, two third radiator fans
33 set up separately on two inner sidewalls of electric control room 2.2, as shown in Fig. 2, each first radiator fan 31, the second radiator fan 32
And the correspondence of third radiator fan 33 is electrically connected with the outside city 22V.
As shown in Figure 5 and Figure 6, in the present invention, division module 7.4 includes the first relay driving 7.4a, the first signal
Grade relay 7.4b, second signal grade relay 7.4c, third signal grade relay 7.4d, the first precision resistance 7.4e, second
Precision resistance 7.4f, third precision resistance 7.4g, the first accurate divider resistance 7.4h, the second accurate divider resistance 7.4i, first
Programmable instrumentation amplifier 7.4j and voltage filtering circuit 7.4k；The input terminal of first relay driving 7.4a and the first miniature control
Device chip 7.1 processed connects, the output end of the first relay driving 7.4a respectively with the first signal grade relay 7.4b, second signal
The input terminal connection of grade relay 7.4c and third signal grade relay 7.4d；First precision resistance 7.4e and the second precision resistance
7.4f is in parallel, and mono- parallel connected end of the first precision resistance 7.4e and the second precision resistance 7.4f is defeated with the first signal grade relay 7.4b's
Outlet connection, the first precision resistance 7.4e and second another parallel connected end of precision resistance 7.4f are with second signal grade relay 7.4c's
Input terminal connection；The input terminal of first programmable instrumentation amplifier 7.4j respectively with the first accurate divider resistance 7.4h, the second essence
The connection of the output end of close divider resistance 7.4i, third precision resistance 7.4g and second signal grade relay 7.4c, first can compile
The output end of journey instrument amplifier 7.4j respectively with the input terminal of voltage filtering circuit 7.4k and the first signal grade relay 7.4b
Input terminal connection, the output end of voltage filtering circuit 7.4k connect with the first microcontroller chip 7.1；Second signal grade after
The output end of electric appliance 7.4c is also connect with third precision resistance 7.4g, the accurate partial pressure electricity of the first precision divider resistance 7.4h and second
Resistance 7.4i is also connect with the input terminal of third signal grade relay 7.4d, and the output end of third signal grade relay 7.4d is corresponding
It is connect with the voltage negative terminal in four-wire system module testing interface 7.12, the voltage in four-wire system module testing interface 7.12 is just
Extreme son is connect with the first precision divider resistance 7.4h and the second precision divider resistance 7.4i respectively.
As shown in figure 5 and figure 7, in the present invention, diverter module 7.5 includes the second relay driving 7.5a, fourth signal
Grade relay 7.5b, the 5th signal grade relay 7.5c, the 6th signal grade relay 7.5d, the 4th precision resistance 7.5e, the 5th
Precision resistance 7.5f, the 6th precision resistance 7.5g, the first accurate current divider 7.5h, the second accurate current divider 7.5i, second can compile
Journey instrument amplifier 7.5j and current filtering circuit 7.5k；The input terminal and the first microcontroller of second relay driving 7.5a
Chip 7.1 connect, the output end of the second relay driving 7.5a respectively with fourth signal grade relay 7.5b, the 5th signal grade after
The connection of the input terminal of electric appliance 7.5c and the 6th signal grade relay 7.5d；4th precision resistance 7.5e and the 5th precision resistance 7.5f
Parallel connection, the output end of the 4th mono- parallel connected end of precision resistance 7.5e and the 5th precision resistance 7.5f and fourth signal grade relay 7.5b
Connection, another parallel connected end are connect with the input terminal of the 5th signal grade relay 7.5c；Second programmable instrumentation amplifier 7.5j's
Input terminal is respectively with the 6th precision resistance 7.5g's and the 5th signal grade relay 7.5c and the 6th signal grade relay 7.5d
Output end connection, the output end of the second programmable instrumentation amplifier 7.5j respectively with the input terminal of current filtering circuit 7.5k and the
The input terminal of four signal grade relay 7.5b connects；The output end of 5th signal grade relay 7.5c also with the 6th precision resistance
7.5g connection, the input terminal of the 6th signal grade relay 7.5d are also shunted with the precision of the first precision current divider 7.5h and second respectively
The input terminal of device 7.5i；Connection；
As shown in figure 5 and figure 7, in the present invention, electronic load module 7.6 includes accessory power supply 7.6a, the first MOS crystal
Pipe 7.6b, the second MOS transistor 7.6c and the 7th signal grade relay 7.6d, accessory power supply 7.6a correspondence are surveyed with four-wire system component
The electric current positive terminal connection tried in mouth 7.12, electric current negative terminal in four-wire system module testing interface 7.12 is respectively with the
The connection of the input terminal of one MOS transistor 7.6b and the second MOS transistor 7.6c, the first MOS transistor 7.6b and the 2nd MOS crystal
The input terminal of pipe 7.6c is also connect with the output end of the 7th signal grade relay 7.6d respectively, the 7th signal grade relay 7.6d's
Input terminal is connect with the output end of D/A module 7.3 and the second relay driving 7.5a respectively, the output of the first MOS transistor 7.6b
It holds and is connect with the input terminal of the first accurate current divider 7.5h, the output end of the second MOS transistor 7.6c and the second accurate current divider
The input terminal of 7.5i connects.
As shown in Figure 1, four universal wheels 34 are additionally provided in 2 bottom of sunlight simulation test bench, in sunlight simulation test
It is additionally provided with a key switch 35 and an emergency stop switch 36 at the top of platform 2 and positioned at the outer roof of electric control room 2.2, key is opened
It closes 35 and emergency stop switch 36 is corresponding and 24V Switching Power Supply 12 is electrically connected.
In the present invention, the first, second irradiance sensor 20,21 by four chip sizes is 3mm*40mm, power is
The small photovoltaic cell series welding of 0.1W, and encapsulated through dripping glue, the first microcontroller chip 7.1 uses model
STM32F407 controller chip, the second microcontroller chip 7.2 use model STM32F103 controller chip, infrared temperature
Sensor 29 is spent using the infrared temperature sensor of model IRTP300L.
In the present invention, data acquisition board 7 is four layers of pcb board structure, and the first microcontroller chip 7.1, second is miniature
Controller chip 7.2, D/A module 7.3, division module 7.4, diverter module 7.5, electronic load module 7.6, power interface 7.7,
Xenon lamp drive control interface 7.8, RS232 interface 7.9, irradiance sensor interface 7.10, infrared temperature sensor interface 7.11,
Four-wire system module testing interface 7.12, auxiliary power interface 7.13 and floor push interface 7.14 are arranged at data acquisition board 7
Outermost layer pcb board on.
Before test, as shown in figure 3, data acquisition board 7 is electrically connected by power interface 7.7 and 24V Switching Power Supply 12, lead to
It crosses xenon lamp drive control interface 7.8 and xenon lamp control panel 6 is electrically connected, be electrically connected by RS232 interface 7.9 and industrial personal computer 3,
It is electrically connected by irradiance sensor interface 7.10 and the first, second irradiance sensor 20,21, is sensed by infrared temperature
Device interface 7.11 and infrared temperature sensor 29 are electrically connected, too by four-wire system module testing interface 7.12 and solar energy to be measured
Positive energy photovoltaic module 27 is electrically connected, and is turned 12V transformer 16 by auxiliary power interface 7.13 and 220V and is electrically connected, will be isolated
Transformer 15 and 220V turn 12V transformer 16 and electrically connect with the outside city 220V；
When test, first passes through xenon lamp control panel 6 and drive the work of the first, second xenon lamp 25,26, simulate sunlight and convey
Onto 27 surface of solar photovoltaic assembly to be measured, when the surface of solar photovoltaic assembly 27 to be measured receives first, second
After the sun optical signal that xenon lamp 25,26 simulates, the solar battery sector-meeting in solar photovoltaic assembly 27 to be measured will be received
Optical signal be converted to electric signal output data collection plate 7, the first, second irradiance sensor 20,21 can will feel at the same time
The light intensity signal for the sunlight simulated by the first, second xenon lamp 25,26 that should be arrived is converted to electric signal and exports and adopts to data
Collect plate 7, and infrared temperature sensor 29 can then convert the temperature signal on 27 surface of solar photovoltaic assembly to be measured sensed
For electric signal and it is conveyed to data acquisition board 7, then passes through data acquisition board 7 for collected solar photovoltaic assembly 27 to be measured
The electric current of output, the temperature of voltage and assembly surface and xenon lamp simulate the data such as sun light signal strength and are sent to industrial personal computer
In 3, and the specific program by being arranged in industrial personal computer 3, these data are analyzed, handled, are calculated, PV-IV song is drawn out
Line；Finally by display terminal by industrial personal computer through analysis, processing, calculating, the PV-IV curve drawn out is shown.
Each precision resistance, signal grade relay and programmable instrumentation amplifier employed in the present invention are this field skill
Each filter circuit of common specifications and models known in art personnel, use is also well known to those skilled in the art common filter circuit,
So not pointed out in invention.
Finally illustrate, the above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all
Using equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is applied directly or indirectly in other
Relevant technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of solar photovoltaic assembly IV characteristic test device, comprising display terminal (1), sunlight simulation test bench (2) and
Industrial personal computer (3), it is characterised in that: the sunlight simulation test bench (2) includes cabinet (2.1), is set in the cabinet (2.1)
There are electric control room (2.2) and sunlight simulating chamber (2.3), the electric control room (2.2) and the sunlight simulating chamber
(2.3) separated by vertical clapboard (2.4), be horizontally set with first layer light tempered glass in the middle part of the sunlight simulating chamber (2.3)
(4), the second layer light tempered glass (5), the first layer light tempering have been horizontally set at the top of the sunlight simulating chamber (2.3)
The sunlight simulating chamber (2.3) is separated into upper layer diffusing reflection room (2.3a) and lower layer's diffusing reflection room (2.3b), institute by glass (4)
It states industrial personal computer (3) to be located in the electric control room (2.2), the display terminal (1) is located at the sunlight simulation test bench
(2) external, the display terminal (1) is connect with the industrial personal computer (3) by data line；
Xenon lamp control panel (6), data acquisition board (7), the first charging panel (8), the are additionally provided in the electric control room (2.2)
Two charging panels (9), the first driving plate (10), the second driving plate (11), 24V Switching Power Supply (12), the first super capacitor group (13),
Second super capacitor group (14), isolating transformer (15), 220V turn 12V transformer (16), upper mounted plate (17), bottom plate
(18) and capacitor frame (19), fixed plate (17) are fixed on the vertical clapboard (2.4) top, and the bottom plate (18) is solid
It is scheduled on the vertical clapboard (2.4) lower part, the xenon lamp control panel (6), data acquisition board (7), the first driving plate (10), second drive
Movable plate (11) is each attached on fixed plate (17), the 24V Switching Power Supply (12), 220V turn 12V transformer (16) and
Capacitor frame (19) is each attached on bottom plate (18), and first super capacitor group (13) and the second super capacitor group (14) are equal
It being fixed on the capacitor frame (19), first charging panel (8) is fixed by the bracket above first driving plate (10),
Second charging panel (9) is fixed by the bracket above second driving plate (11)；
Xenon lamp frame (22) are equipped in lower layer's diffusing reflection room (2.3b), xenon lamp frame (22) upper support described first
Layer light tempered glass (4), the both ends of xenon lamp frame (22) lower part are arranged with the first xenon lamp housing (23) and the second xenon lamp housing
(24), the first xenon lamp (25) are equipped in first xenon lamp housing (23), the second xenon is equipped in second xenon lamp housing (24)
Lamp (26)；
First xenon lamp (25) is electrically connected with first driving plate (10), and first driving plate (10) is filled with described first
Battery plate (8) electrical connection, second charging panel (8) are electrically connected with the xenon lamp control panel (6), first super capacitor group
(13) it is electrically connected respectively with first charging panel (8) and the first driving plate (10)；
Second xenon lamp (26) is electrically connected with second driving plate (11), and second driving plate (11) is filled with described second
Battery plate (9) electrical connection, second charging panel (9) are electrically connected with the xenon lamp control panel (6), second super capacitor group
(13) it is electrically connected respectively with the second charging panel (9) and the second driving plate (11)；
The xenon lamp drive control interface (7.8) that the xenon lamp control panel (6) is equipped with by winding displacement and the data acquisition board (7)
Connection；
The industrial personal computer (3) is connect by RS232 bus with the RS232 interface (7.9) that the data acquisition board (7) is equipped with；
The input terminal that the isolating transformer (15) and 220V turn 12V transformer (16) is electrically connected with the outside city 220V, it is described every
Output end correspondence from transformer (15) is electrically connected with the 24V Switching Power Supply (12), and the 220V turns 12V transformer (16)
Output end correspondence is connect with the auxiliary power interface (7.13) that the data acquisition board (7) is equipped with；
The 24V Switching Power Supply (12) also respectively with the xenon lamp control panel (6), the first charging panel (8), the second charging panel (9),
First driving plate (10) and the second driving plate (11) electrical connection.
2. solar photovoltaic assembly IV characteristic test device according to claim 1, it is characterised in that: unrestrained on the upper layer
The first irradiance sensor (20) and the second irradiance sensor (21) are arranged on the both ends side wall of reflection room (2.3a), it is described
The irradiation level sensing that first irradiance sensor (20) and the second irradiance sensor (21) are equipped with data acquisition board (7)
Device interface (7.10) electrical connection；
Infrared temperature sensor also is fixed with by gantry support (28) right above the second layer light tempered glass (5)
(29), the gantry support (28) is fixedly connected or separates with sunlight simulation test bench (2), the infrared temperature sensor
(29) it is electrically connected with the infrared temperature sensor interface (7.11).
3. solar photovoltaic assembly IV characteristic test device according to claim 2, it is characterised in that: the data acquisition
The first microcontroller chip (7.1), the second microcontroller chip (7.2), D/A module (7.3), partial pressure are additionally provided on plate (7)
Module (7.4), diverter module (7.5), electronic load module (7.6), power interface (7.7), infrared temperature sensor interface
(7.11) and four-wire system module testing interface (7.12), the first microcontroller chip (7.1) are micro- with described second respectively
Type controller chip (7.2), division module (7.4), diverter module (7.5), power interface (7.7), xenon lamp drive control interface
(7.8), RS232 interface (7.9), irradiance sensor interface (7.10), infrared temperature sensor interface (7.11) and auxiliary electricity
Source interface (7.13) is electrically connected, and the second microcontroller chip (7.2) and the D/A module (7.3) are electrically connected, institute
D/A module (7.3) and the electronic load module (7.6) are stated to be electrically connected, the electronic load module (7.6) respectively with it is described
Diverter module (7.5) and four-wire system module testing interface (7.12) are electrically connected, the four-wire system module testing interface (7.12)
Solar photovoltaic assembly to be measured with the division module (7.4) and setting at the top of the second layer light tempered glass (5) respectively
(27) it is electrically connected.
4. solar photovoltaic assembly IV characteristic test device according to claim 3, it is characterised in that: adopted in the data
Collection plate (7) on be additionally provided with floor push interface (7.14), the floor push interface (7.14) respectively with the described first miniature control
The floor push (30) of device chip (7.1) processed and setting in sunlight simulation test bench (2) bottom is electrically connected.
5. solar photovoltaic assembly IV characteristic test device according to claim 1, it is characterised in that: in the electric-controlled
There are two the first radiator fan (31), two the second radiator fans (32) and two third radiator fans in room (2.2) processed
(33), two first radiator fans (31) are each attached to the one of first charging panel (8) and the first driving plate (10)
Side, two second radiator fans (32) are each attached to the side of second charging panel (9) and the second driving plate (11),
Described two third radiator fans (33) are set up separately on two inner sidewalls of the electric control room (2.2), and each described first dissipates
Hot-air fan (31), the second radiator fan (32) and third radiator fan (33) correspondence are electrically connected with the outside city 22V.
6. solar photovoltaic assembly IV characteristic test device according to claim 3, it is characterised in that: the division module
(7.4) comprising the first relay driving (7.4a), the first signal grade relay (7.4b), second signal grade relay (7.4c),
Third signal grade relay (7.4d), the first precision resistance (7.4e), the second precision resistance (7.4f), third precision resistance
(7.4g), the first accurate divider resistance (7.4h), the second accurate divider resistance (7.4i), the first programmable instrumentation amplifier
(7.4j) and voltage filtering circuit (7.4k)；
The input terminal of first relay driving (7.4a) is connect with the first microcontroller chip (7.1), and described
The output end of one relay driving (7.4a) respectively with the first signal grade relay (7.4b), second signal grade relay
The connection of the input terminal of (7.4c) and third signal grade relay (7.4d)；
First precision resistance (7.4e) is in parallel with the second precision resistance (7.4f), first precision resistance (7.4e) and the
Two precision resistances (7.4f) parallel connected end is connect with the output end of the first signal grade relay (7.4b), first precision resistance
(7.4e) is connect with the second precision resistance (7.4f) another parallel connected end with the input terminal of the second signal grade relay (7.4c)；
The input terminal of the first programmable instrumentation amplifier (7.4j) respectively with the described first accurate divider resistance (7.4h), the
The output end of two accurate divider resistances (7.4i), third precision resistance (7.4g) and second signal grade relay (7.4c) connects
It connects, the output end of the first programmable instrumentation amplifier (7.4j) input terminal with the voltage filtering circuit (7.4k) respectively
And first signal grade relay (7.4b) input terminal connection, the output end and described first of the voltage filtering circuit (7.4k)
Microcontroller chip (7.1) connection；
The output end of the second signal grade relay (7.4c) is also connect with the third precision resistance (7.4g), and described first
Accurate divider resistance (7.4h) and the second accurate divider resistance (7.4i) also with the third signal grade relay (7.4d)
Input terminal connection, output end correspondence and the four-wire system module testing interface of the third signal grade relay (7.4d)
(7.12) the voltage negative terminal connection in, positive polarity terminal in the four-wire system module testing interface (7.12) respectively with
Described first accurate divider resistance (7.4h) and the second accurate divider resistance (7.4i) connect.
7. solar photovoltaic assembly IV characteristic test device according to claim 3, it is characterised in that: the diverter module
(7.5) comprising the second relay driving (7.5a), fourth signal grade relay (7.5b), the 5th signal grade relay (7.5c),
6th signal grade relay (7.5d), the 4th precision resistance (7.5e), the 5th precision resistance (7.5f), the 6th precision resistance
(7.5g), the first accurate current divider (7.5h), the second accurate current divider (7.5i), the second programmable instrumentation amplifier (7.5j) and
Current filtering circuit (7.5k)；
The input terminal of second relay driving (7.5a) is connect with the first microcontroller chip (7.1), and described
The output end of two relay drivings (7.5a) respectively with the fourth signal grade relay (7.5b), the 5th signal grade relay
The connection of the input terminal of (7.5c) and the 6th signal grade relay (7.5d)；
4th precision resistance (7.5e) is in parallel with the 5th precision resistance (7.5f), the 4th precision resistance (7.5e) and the
Five precision resistances (7.5f) parallel connected end is connect with the output end of the fourth signal grade relay (7.5b), another parallel connected end with
The input terminal of the 5th signal grade relay (7.5c) connects；
The input terminal of the second programmable instrumentation amplifier (7.5j) respectively with the 6th precision resistance (7.5g) and institute
It states the 5th signal grade relay (7.5c) to connect with the output end of the 6th signal grade relay (7.5d), the second programmable instrument
The output end of table amplifier (7.5j) respectively with the input terminal and fourth signal grade relay of the current filtering circuit (7.5k)
The input terminal of (7.5b) connects；
The output end of the 5th signal grade relay (7.5c) is also connect with the 6th precision resistance (7.5g), and the described 6th
The input terminal of signal grade relay (7.5d) also respectively with the described first accurate current divider (7.5h) and the second accurate current divider
The input terminal of (7.5i)；Connection；
The electronic load module (7.6) includes accessory power supply (7.6a), the first MOS transistor (7.6b), the second MOS transistor
(7.6c) and the 7th signal grade relay (7.6d), accessory power supply (7.6a) correspondence and four-wire system module testing interface
(7.12) the electric current positive terminal connection in, electric current negative terminal in the four-wire system module testing interface (7.12) respectively with
The connection of the input terminal of first MOS transistor (7.6b) and the second MOS transistor (7.6c), first MOS transistor
The input terminal of (7.6b) and the second MOS transistor (7.6c) the also output end with the 7th signal grade relay (7.6d) respectively
Connection, the input terminal of the 7th signal grade relay (7.6d) respectively with the D/A module (7.3) and the second relay driving
The output end of (7.5a) connects, the output end of first MOS transistor (7.6b) and the first accurate current divider (7.5h)
Input terminal connection, the input of the output end of second MOS transistor (7.6c) and the second accurate current divider (7.5i)
End connection.
8. solar photovoltaic assembly IV characteristic test device according to claim 1, it is characterised in that: in the sunlight
Simulation test bench (2) bottom is additionally provided with four universal wheels (34), at the top of the sunlight simulation test bench (2) and is located at electrical
The outer roof of control room (2.2) is additionally provided with a key switch (35) and an emergency stop switch (36), the key switch (35)
And emergency stop switch (36) is corresponding and the 24V Switching Power Supply (12) is electrically connected.
9. solar photovoltaic assembly IV characteristic test device according to claim 2, it is characterised in that: described first,
Two irradiance sensors (20,21) by four chip sizes are 3mm*40mm, the small photovoltaic cell series welding that power is 0.1W, and are passed through
Drop glue encapsulates, and the first microcontroller chip (5.1) uses model STM32F407 controller chip, and described the
Two microcontroller chips (5.2) use model STM32F103 controller chip, and the infrared temperature sensor (29) uses
The infrared temperature sensor of model IRTP300L.
10. solar photovoltaic assembly IV characteristic test device according to claim 3, it is characterised in that: the data are adopted
Collecting plate (7) is four layers of pcb board structure, the first microcontroller chip (7.1), the second microcontroller chip (7.2), DA
Module (7.3), division module (7.4), diverter module (7.5), electronic load module (7.6), power interface (7.7), xenon lamp drive
Dynamic control interface (7.8), RS232 interface (7.9), irradiance sensor interface (7.10), infrared temperature sensor interface
(7.11), four-wire system module testing interface (7.12) and auxiliary power interface (7.13) are arranged at the data acquisition board (7)
Outermost layer pcb board on.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212862A (en) * | 2019-07-03 | 2019-09-06 | 华北电力大学 | Indoor photovoltaic battery current-voltage testing system and method |
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