CN102944828A - Intelligent solar cell module outdoor testing platform and testing method thereof - Google Patents
Intelligent solar cell module outdoor testing platform and testing method thereof Download PDFInfo
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Abstract
The invention discloses an intelligent solar cell module outdoor testing platform and a testing method thereof. Solar cell modules to be measured are fixed to the support of the outdoor testing platform. The platform comprises a control circuit board with a micro-processor serving as a core and electronic load having a constant voltage working mode and a constant current working mode, the electronic load is controlled, the Initial Velocity (IV) performance curve of the solar cell modules is measured, an intelligent topology circuit is controlled through the control circuit board, the switching of independent measurement and series and parallel measurement of two solar cell modules is achieved, collected data are stored in a high-capacity storage module of the platform in accordance with a proposed solar cell module outdoor testing process, and the data are transmitted to a remote-control computer through network communication. The working situation of the solar cell modules in the outdoor environment can be reflected truly, and the performance of solar cell modules can be evaluated effectively.
Description
Technical field
The invention belongs to electrotechnics, energy technology field, what be specifically related to is a kind of intelligent solar battery component outdoor test platform and method of testing thereof.
Background technology
Develop rapidly along with science and technology; demand for the energy increases day by day both at home and abroad; especially after entering 21 century; energy problem is just becoming the major issue of the aspects such as society, economy, environment; therefore new forms of energy are paid attention to further; sun power is being played the part of day by day important role as a kind of green renewable resource in world's energy crisis.Domestic photovoltaic industrial boom in recent years, the photovoltaic module output increase year after year of each photovoltaic enterprise, reliability to photovoltaic module improves day by day, simultaneously in order to adapt to the requirement of international market, accurately and comprehensively measure for the solar components of producing performance under different condition, become requisite step in each photovoltaic enterprise production procedure.
Cell piece and the module testing environment of present domestic photovoltaic enterprise, mainly be based on indoor solar simulator, control artificially the residing environment of cell piece and assembly, obtain solar battery sheet or the IV family curve of photovoltaic module under varying environment with this, and it is measured and draw, it is advantageous that, can the manual control irradiance, temperature, the working environment requirements such as the suffered stress of assembly, simultaneously can simulate various abominable test environments, obtain the adaptable maximal work environment of assembly.Yet there is obvious defective in it, and the sunshine of lab simulation and actual light are distinct, because environment is artificial simulation, can not effectively reflect the out of doors time of day under the complex work environment of assembly.Therefore, the outdoor test platform of setting up photovoltaic module seems very important to the IV family curve test experiments that it carries out under the outdoor environment.
Summary of the invention
For the deficiency that exists on the prior art, the invention provides a kind of intelligent solar battery component outdoor test platform and method of testing thereof, can test situation under solar module series and parallel and the independent role by topology, the electronic load of two kinds of changeable mode of operations of constant current constant voltage, control circuit board are controlled the switching of intelligent topological circuit and electronic load constant pressure and flow pattern.
To achieve these goals, the present invention realizes by the following technical solutions:
A kind of intelligent solar battery component outdoor test platform is characterized in that: it comprise can carry out the adjustment angle be connected with the position solar module support, have two kinds of mode of operations of constant pressure and flow electronic load, be installed in intelligent topological circuit and control circuit board that the solar module on the solar module support is connected with load; Described solar module is connected with electronic load by intelligent topological circuit, and described electronic load directly links to each other with control circuit, and described intelligent topological circuit switches by control circuit control.What wherein, propulsion system adopted is motor.
Described solar module support comprises aluminium alloy bearing and solar module fixed head, bearing has the rotary freedom of level, can realize 0 ° to 360 ° rotation, the assembly fixed head has vertical rotary freedom, can realize solar module by vertical (90 °) transformation to level (180 °), by with bearing horizontally rotate acting in conjunction realize solar module towards comprehensive change.Be equipped with respectively code-wheel at bearing and supporting revolving shaft and fixed rotating shaft place, by machine operation so that supporting revolving shaft and fixed rotating shaft rotate, its rotational angle is corresponding with the code-wheel electric signal, and electric signal is delivered to the CPU module through signal conditioning circuit, can control in real time and obtain the relevant position of solar module support and fixed head; Solar module is fixed on top of the trellis, and with the support adjustable-angle, positive output end and negative output terminal by solar module are connected in the intelligent topological circuit.At assembly fixed head edge the irradiance sensor is housed, the irradiance parameter of acquisition sends to the CPU module through signal conditioning circuit.
Described intelligent topological circuit is, two groups of solar modules are connected with intelligent switch by positive and negative output terminal, by intelligent switching control component string intelligent topological circuit in parallel, be convenient to two groups of solar modules difference independent measurements or series-parallel circuit handover measurement; Each intelligent switch is directly by control circuit board control, to realize the on-off control circuit topology conversion.
Described electronic load with constant current, the switching of constant voltage mode of operation comprises electronic load circuit and control signal modulate circuit; Described electronic load is the feedback control circuit that the low conducting MOSFET of operational amplifier and N raceway groove forms, and the positive-negative input end of electronic load connects respectively the positive-negative input end of intelligent topological circuit, thereby is connected with solar module; Described control signal modulate circuit is connected with control circuit board, control signal is processed rear with control electronic load duty.
Described control circuit board comprises the CPU module, AD signal conditioning circuit, signal conditioning circuit, DA module, real-time clock module, irradiance measurement module, temperature-measuring module, LCD LCD MODULE, SD card memory module, network communication module; The dsp chip TMS320F28027 that described CPU module is produced take TI company is as core controller; The silicon irradiance sensor that described irradiance measurement module adopts IMT Solar company to produce is with the solar module juxtaposition; Described temperature-measuring module has adopted a plurality of Pt100 platinum resistance thermometer sensor,s as temperature sensor, places respectively solar module back and air; Described irradiance all links to each other with the CPU module via signal conditioning circuit with temperature sensor and code-wheel output signal, the DA module links to each other with the CPU module by the I2C bus with real-time clock module, LCD display module, large capacity storage module and network communication module link to each other with the CPU module by spi bus, the CPU module links to each other with wireless router via the network communication module.
A kind of solar module outdoor test method, based on above-mentioned solar module outdoor test platform, solar module outdoor test method step is as follows:
(1) control intelligent topological circuit by control circuit board, so that switch (205) (207) conducting, (206) (208) disconnect, and realize that two groups of solar modules link to each other with load respectively to measure respectively 2 groups of solar module independent roles.Measure the solar irradiance of current single solar module environment of living in, battery component temperature, environment temperature, and record data;
(2) measure short-circuit current Isc and the open-circuit voltage Voc of solar module in current environment, calculate the operating voltage Vapp of its approximate maximum power point place, respective formula is as follows:
Vapp＝kVoc；
Wherein k gets 0.8; According to the Vapp value, may need the working point Ncv ' that measures under the computing constant die pressing type, formula is as follows:
If Ncv ' less than 128, then measures the value of Ncv for Ncv ' is rounded of counting under the constant voltage mode; If Ncv ' more than or equal to 128, then gets Ncv=128; Can calculate the change in voltage step delta V that electronic load is controlled by Ncv under constant voltage mode:
(3) electronic load is operated under the constant voltage mode, the current value I app when the measurement solar module works in Vapp;
(4) by the Iapp value, can calculate electronic load may need measurement under constant current mode points N cc ':
If Ncc ' is less than 128, then measuring the Ncc that counts under the constant current mode is the value that Ncc ' rounds; If Ncc ' more than or equal to 128, removes Ncc=128; Calculated by Ncc and to load on the electric current step delta I that controls under the constant current mode:
(5) under constant voltage mode, change to Vapp by control electronic load operating voltage by 0, step-length is Δ V; Switching electronic load is the constant current mode of operation again, controls its working current, changes to 0 by Iapp, and step-length is Δ I; Control circuit board passes through the AD sampling module, the IV curve data of record solar energy battery component;
(6) after the IV curved measurement is finished, again to solar irradiance in the current environment, ambient air temperature, assembly temperature is measured, and record data;
(7) by the IV family curve that obtains, calculate solar module short-circuit current Isc, open-circuit voltage Voc, maximum power point power P m, the current value I m of maximum power point place, the magnitude of voltage Vm of maximum power point place, the characteristic parameters such as activity coefficient FF;
(8) after all data are processed and stored, repeat (1) step, carry out next solar module IV curved measurement constantly;
(9) when needs are adjusted the platform travel direction, rotational support rotating shaft (103) and fixed rotating shaft (105), accurately control solar module rotational angle and present position by code-wheel, synchronous signal is delivered to CPU and stores, and carries out the step of above-mentioned 1-8 again;
(10) control intelligent topological circuit by control circuit board, the second single-way switch (206) closure, two-way switch (208) conducting, the first single-way switch (205) and the 3rd single-way switch (207) disconnect, so that two groups of solar modules are in two series connection, repeat above-mentioned 1-9 step, measure 2 groups of IV family curves after the solar module series connection, and records store data; By intelligent topological circuit, the first single-way switch (205) and the 3rd single-way switch (207) conducting, two-way switch (208) conducting, the second single-way switch (206) disconnects, so that two groups of solar modules are in two states in parallel, repeat above-mentioned 1-9 step, measure 2 groups of IV family curves behind the solar modules parallel connection connection, and records store data;
Wherein, control circuit carries out single pass every 5 seconds IV curves to solar module, and curve data and the environmental parameter that measures is stored in the SD card, and pass through Ethernet interface, through wireless router, with upper machine communication, with deposit data in the database of host computer.
The present invention passes through technique scheme, can test the solar module string, situation under parallel connection and the independent role, the electronic load of two kinds of changeable mode of operations of constant current constant voltage, control circuit board is controlled the switching of intelligent topological circuit and electronic load constant pressure and flow pattern, can show in real time the residing angle position of current measured solar module, current environment factor (solar irradiance and assembly, environment temperature), the important parameters such as the output characteristic curve of solar module, it can reflect the out of doors working condition under the environment of solar module really, realized the IV family curve test experiments under the outdoor environment is effectively realized the assessment of solar module performance.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the specific embodiments of intelligent solar outdoor test platform of the present invention;
Fig. 2 is the structural representation of the intelligent solar battery component outdoor test platform support of the present invention when being assembly fixed head plumbness;
Fig. 3 is the structural representation of the intelligent solar battery component outdoor test platform support of the present invention when being assembly fixed head horizontality;
Fig. 4 is solar module connection in series-parallel intelligence topological circuit synoptic diagram of the present invention;
Fig. 5 is solar module electronic load circuit synoptic diagram of the present invention;
Fig. 6 is solar module workflow diagram of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the present invention.
As shown in Figure 1, intelligent solar battery component outdoor test platform of the present invention, it comprises the solar module support, the intelligence topological circuit, electronic load and control circuit board, fixing means on the solar module support, it can realize the rotation of the comprehensive multi-angle of solar module, the different period irradiation situations of intelligentized adaptation, the intelligence topology of solar module and load circuit, can test the solar module string by topology, situation under parallel connection and the independent role, the electronic load of two kinds of changeable mode of operations of constant current constant voltage, control circuit board are controlled the switching of intelligent topological circuit and electronic load constant pressure and flow pattern.
In the present embodiment, control circuit board comprises CPU module, DA module, AD sampling modulate circuit, code-wheel module, LCD display module, large capacity storage module and clock module; Described CPU module is connected to electronic load via the DA module, electronic load output terminal access AD sampling modulate circuit, the irradiance sensor of measurement environment factor, each temperature sensor are used for determining that the code-wheel module of solar module present position links to each other with the CPU module by the signal sampling modulate circuit; Described large capacity storage module, LCD module, clock module and mixed-media network modules mixed-media directly link to each other with the CPU module; Wherein, mixed-media network modules mixed-media links to each other with the remote control computer router by the test platform router, and is connected to remote control computer.
Above-mentioned CPU module is the dsp chip TMS320F28027 that TI company produces, and its built-in 12 bit A/D converters can be realized the sampling to each road simulating signal, and carry out the conditioning of corresponding signal data.Wherein, the signal that need to sample and nurse one's health comprises: the load voltage of electronic load input end, load current through electronic load, the assembly temperature of two groups of solar modules, environment temperature, solar irradiance, angle and present position that the solar module that is obtained by code-wheel turns over.After DSP samples each road simulating signal, Measuring Time, IV family curve data, environmental parameter, the assembly anglec of rotation and present position are stored in the SD card by spi bus; Simultaneously, DSP adjusts the duty of electronic load through the DA module, realizes the characteristic measurement of IV, thereby changes the working point of solar module, so that it is operated on the maximum power point; The common access network of the mixed-media network modules mixed-media of outdoor test platform and remote control computer so that even the data that DSP can measure the same day send to remote control computer, and leaves in the database; The LCD of outdoor test platform can show the important parameters such as output characteristic curve of the current measured residing angle position of solar module, current environment factor (solar irradiance and assembly, environment temperature), solar module in real time.Wherein large capacity storage module can be selected SD card etc., and network can be selected WLAN (wireless local area network).
As shown in Figures 2 and 3, the solar module support comprise be positioned over outdoor ground bearing 101, be arranged on supporting revolving shaft 103 on the bearing 101, drive supporting revolving shaft 103 propulsion system, be installed in the top support 104 on the supporting revolving shaft 103 and be installed on the top support 104 and the assembly fixed head 106 of adjustable angle and position; Also be provided with fixed rotating shaft 105 on top support 104, described assembly fixed head 104 is connected with fixed rotating shaft 105 by push rod, and the edge of assembly fixed head 106 also is provided with irradiance sensor 107.The solar module support also comprises for the scalable fixed bar 102 of fixing fixed rotating shaft 105 with assembly fixed head 106, described scalable fixed bar 102 1 end coupling assembling fixed heads 106, and its other end connects the bottom of supporting revolving shaft 103.
In the present embodiment, bearing 101 is positioned over ground, the position that supporting rotating shaft 102 is installed at bearing is equipped with code-wheel, needed angle when being used for the rotation of control driven by motor supporting revolving shaft 103, its precision is controlled at 1 °, sends solar module angle of living in and position to CPU by electric signal simultaneously.Top support (104), on fixed rotating shaft (105) is arranged, only have equally code-wheel, fixing by support bar and assembly fixed head (106).The position that installs and fixes rotating shaft 105 in top support 104 is provided with code-wheel, control the control that the rotating shaft campaign realizes required angle with this, 90 °～180 ° of its scopes, accurately control the angle of rotating by code-wheel, and signal is passed to the CPU module stores, realize that test platform is comprehensive, the duty of multi-angle.
On the assembly fixed head and be equipped with irradiance sensor (107), at the solar module back temperature sensor PT100 is housed, the irradiance of acquisition and temperature data are sent to the CPU module.Solar module is installed on the assembly fixed head, by the acting in conjunction of supporting revolving shaft (103) and fixed rotating shaft (105), can realize that test platform is comprehensive, the duty of multi-angle.
Wherein, the equal aluminium alloy of the material of bearing 101, supporting revolving shaft 103 and support bar is light and certain hardness arranged.Assembly fixed head 106 can be selected the monocrystalline silicon component palette, but also limiting material not, according to test needs also optional majority crystal silicon component plate, film battery assembly plate etc.
Two groups of solar modules and load connection in series-parallel intelligence topological circuit as shown in Figure 4.This intelligence topological circuit comprises the electronic load 203 that is connected in parallel, 204 and solar module 201,202, between solar module 201 and electronic load 204 and solar module 202, be connected with respectively the first single-way switch 205 and the second single-way switch 206, be connected with the 3rd single-way switch 207 between solar module 202 and the electronic load 203, between electronic load 203 and electronic load 204, be connected with two-way switch (208).Wherein, two Battery pack assemblies 201,202, its output line is connected with load circuit 203,204 through the first single-way switch 205, the second single-way switch 206, the 3rd single-way switch 207 and two-way switch 208.Wherein, the first single-way switch 205, the second single-way switch 206 and the 3rd single-way switch 207 can select low conducting MOSFET pipe to realize the break-make of electric current, and two-way switch 208 can have two in parallel acquisitions of MOSFET pipe.Considering under the different condition, but other components and parts such as switch selective relay replace.
When the first single- way switch 205 and 207 conductings of the 3rd single-way switch, when the second single-way switch 206 and two-way switch 208 disconnect, can realize that two groups of solar modules link to each other with load respectively, test separately working condition.When the first single- way switch 205 and 207 conductings of the 3rd single-way switch, two-way switch 208 conductings when the second single-way switch 206 disconnects, realize that two groups of assemblies are connected in parallel, and can test two groups of working conditions under the assemblies parallel connection state by adjusting load.When the second single-way switch 206 closures, two-way switch 208 conductings when the first single-way switch 205 and the 3rd single-way switch 207 disconnect, can realize that two groups of assemblies are connected in series by adjusting load can test two groups of working conditions under the solar module series connection.
As shown in Figure 5, it is solar module electronic load circuit figure, can carry out the switching of constant voltage mode and constant current mode.
When being operated in constant voltage mode, the grid low-voltage of MOSFET pipe Q9, not conducting between source electrode and drain electrode, MOSFET pipe Q10 provides high voltage to grid by control circuit, so that its source electrode and drain electrode conducting, whole circuit working is at constant voltage mode.At this moment, the given specified control voltage (DA_CV) of negative input end at operational amplifier U8A, operational amplifier output terminal is received the base stage of triode Q11 through resistance R 20 and diode D4, the grid of the N-channel MOS FET pipe of the output termination parallel connection of triode, the drain electrode of MOSFET pipe connects the positive output end of solar module, source electrode connects the reference resistance of low resistance, the in-phase input end of access operational amplifier behind drain electrode process divider resistance R18, the R19 of MOSFET.Thus, can obtain in drain electrode place of MOSFET pipe stable output voltage.
When being operated in constant current mode, the grid low-voltage of MOSFET pipe Q10, not conducting between source electrode and drain electrode, MOSFET pipe Q9 provides high voltage to grid by control circuit, so that its source electrode and drain electrode conducting, whole circuit working is at constant current mode.At this moment, the given specified control voltage (DA_CC) of positive input terminal at operational amplifier U8B, the output terminal of operational amplifier is through resistance R 24 and diode D5, be connected to the base stage of triode Q12, the emitter of triode Q12 connects the grid of N-channel MOS FET pipe Q9 in parallel, and at the positive input terminal of the drain electrode access solar module of MOSFET pipe Q9, the source electrode of MOSFET pipe Q9 is received the inverting input of operational amplifier U8A through resistance R 23.Thus, can obtain stable output voltage at the source electrode place of paralleling MOS FET pipe.
Wherein, the control voltage that provides of operational amplifier U8A positive input terminal and U8B negative input end is provided through behind the amplifying circuit by the DA chip on the control circuit board.Resistance R 17 and capacitor C 22, resistance R 22 and capacitor C 24, resistance R 19 and capacitor C 23 play respectively the effect of filter rectification.Take a plurality of MOSFET pipe in parallel effect, can play the effect of shunting, prevent that the working temperature of single MOSFET pipe is too high.The output terminal of two operational amplifier U8A, U8B is received respectively in the drain electrode of MOSFET pipe Q9, Q10, and its grid is received control circuit, when control circuit to Q9 grid low level, during Q10 grid high level, circuit is in the constant voltage mode of operation; When control circuit to Q10 grid low level, during Q9 grid high level, circuit is in the constant current mode of operation.
Fig. 6 is a kind of workflow diagram of intelligent solar battery component outdoor test platform.This method of testing step is as follows:
(1) controls intelligent topological circuit by control circuit board, so that the first single- way switch 205 and 207 conductings of the 3rd single-way switch, the second single-way switch 206 and two-way switch 208 disconnect, realize that two groups of solar modules link to each other with load respectively, measure respectively 2 groups of solar module independent roles.Measure the solar irradiance of current single solar module environment of living in, battery component temperature, environment temperature, and record data;
(2) measure short-circuit current Isc and the open-circuit voltage Voc of solar module in current environment, calculate the operating voltage Vapp of its approximate maximum power point place, respective formula is as follows:
Vapp＝kVoc；
Wherein k gets 0.8; According to the Vapp value, may need the working point Ncv ' that measures under the computing constant die pressing type, formula is as follows:
If Ncv ' is less than 128, then measuring the Ncv that counts under the constant voltage mode is the value that Ncv ' rounds; If Ncv ' more than or equal to 128, then gets Ncv=128; Can calculate the change in voltage step delta V that electronic load is controlled by Ncv under constant voltage mode:
(3) electronic load is operated under the constant voltage mode, the current value I app when the measurement solar module works in Vapp;
(4) by the Iapp value, can calculate electronic load may need measurement under constant current mode points N cc ':
If Ncc ' is less than 128, then measuring the Ncc that counts under the constant current mode is the value that Ncc ' rounds; If Ncc ' more than or equal to 128, removes Ncc=128; Calculated by Ncc and to load on the electric current step delta I that controls under the constant current mode:
(5) under constant voltage mode, change to Vapp by control electronic load operating voltage by 0, step-length is Δ V; Switching electronic load is the constant current mode of operation again, controls its working current, changes to 0 by Iapp, and step-length is Δ I; Control circuit board passes through the AD sampling module, the IV curve data of record solar energy battery component;
(6) after the IV curved measurement is finished, again to solar irradiance in the current environment, ambient air temperature, assembly temperature is measured, and record data;
(7) by the IV family curve that obtains, calculate solar module short-circuit current Isc, open-circuit voltage Voc, maximum power point power P m, the current value I m of maximum power point place, the magnitude of voltage Vm of maximum power point place, the characteristic parameters such as activity coefficient FF;
(8) after all data are processed and stored, repeat the 1st) step, carry out next solar module IV curved measurement constantly;
(9) when needs are adjusted the platform travel direction, rotational support rotating shaft 103 and fixed rotating shaft 105, by the accurate Control Component rotational angle of code-wheel and present position, synchronous signal is delivered to CPU and stores, and carries out the step of above-mentioned 1-8 again;
(10) control intelligent topological circuit by control circuit board, the second single-way switch 206 closures, two-way switch 208) conducting, switch the first single-way switch 205, the 3rd single-way switch 207 disconnect, so that two groups of solar modules are in two series connection, repeat above-mentioned 1-9 step, measure 2 groups of IV family curves after the solar module series connection, and records store data; By intelligent topological circuit, the first single-way switch 205,207 conductings of the 3rd single-way switch, two-way switch 208 conductings, the second single-way switch 206 disconnects, so that two groups of solar modules are in two states in parallel, repeat above-mentioned 1-9 step, measure 2 groups of IV family curves behind the solar modules parallel connection connection, and records store data.
Control circuit carries out single pass every 5 seconds IV curves to battery component, the curve data and the environmental parameter that measure are stored in the SD card, and by Ethernet interface, through wireless router, with upper machine communication, with deposit data in the database of host computer.
Based on above-mentioned, the present invention is fixed on measured solar module on the support of outdoor test platform, contain the control circuit board take microprocessor as core, the electronic load that two kinds of mode of operations of constant pressure and flow are arranged is measured the IV family curve of solar module by the control electronic load; Control intelligent topological circuit by control circuit board, realize the switching that two battery component independent measurements and series, parallel are measured; Simultaneously according to the solar module outdoor test flow process that proposes, the data storing that collects in the large capacity storage module of platform, simultaneously by network service, is sent to data in the remote control computer.The present invention can reflect the out of doors working condition under the environment of solar module really, effectively realizes the assessment of solar module performance.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (10)
1. intelligent solar battery component outdoor test platform is characterized in that: it comprise can carry out the adjustment angle be connected with the position solar module support, have two kinds of mode of operations of constant pressure and flow electronic load, be installed in intelligent topological circuit and control circuit board that the solar module on the solar module support is connected with load; Described solar module is connected with electronic load by intelligent topological circuit, and described electronic load directly links to each other with control circuit, and described intelligent topological circuit switches by control circuit control.
2. a kind of intelligent solar battery component outdoor test platform according to claim 1, it is characterized in that, described solar module support comprise be positioned over outdoor ground bearing (101), be arranged on supporting revolving shaft (103) on the bearing (101), drive the propulsion system of supporting revolving shaft (103), the assembly fixed head (106) that is installed in the top support (104) on the supporting revolving shaft (103) and is installed in top support (104) upper and adjustable angle and position; Also be provided with fixed rotating shaft (105) on described top support (104), described assembly fixed head (104) is connected with fixed rotating shaft (105) by push rod, and the edge of described assembly fixed head (106) also is provided with irradiance sensor (107).
3. a kind of intelligent solar battery component outdoor test platform according to claim 2, it is characterized in that, described solar module support also comprises for fixing fixed rotating shaft (105) the scalable fixed bar (102) with assembly fixed head (106), (106, its other end connects the bottom of supporting revolving shaft (103) to described scalable fixed bar (102) one end coupling assembling fixed heads.
4. a kind of intelligent solar battery component outdoor test platform according to claim 3, it is characterized in that, the position that installs and fixes rotating shaft (105) on the position of described bearing (101) upper installation supporting rotating shaft (102) and the top support (104) all also is provided with for the code-wheel of accurately measuring institute's rotational angle, described code-wheel is accurately controlled the angle of rotating, and signal is passed to the CPU module stores, realize that test platform is comprehensive, the duty of multi-angle.
5. a kind of intelligent solar battery component outdoor test platform according to claim 1, it is characterized in that, described intelligent topological circuit comprises the electronic load (203 that is connected in parallel, 204) and solar module (201,202), between described solar module (201) and electronic load (204) and solar module (202), be connected with respectively the first single-way switch (205) and the second single-way switch (206), be connected with the 3rd single-way switch (207) between described solar module (202) and the electronic load (203), between described electronic load (203) and electronic load (204), be connected with two-way switch (208).
6. a kind of intelligent solar battery component outdoor test platform according to claim 5, it is characterized in that, what described electronic load (203,204) all adopted is feedback control circuit, and described feedback control circuit comprises that operational amplifier (U8A, U8B), MOSFET manage (Q9, Q10), diode (D4, D5), divider resistance (R18, R19, R20, R23, R24) and triode (Q11, Q121);
When working in constant voltage mode, described operational amplifier (U8A) output terminal is through the base stage of resistance (R20) and diode (D4) connecting triode (Q11), the emitter of described triode (Q11) is received the grid of a plurality of paralleling MOS FET pipes (Q9), the drain electrode process divider resistance (R18, R19) of described MOSFET pipe (Q9) is connected to the in-phase input end of operational amplifier (U8A), the inverting input of the D/A module concatenation operation amplifier (U8A) of described control circuit;
Work in constant current mode, the output terminal of described operational amplifier (U8B) is through the base stage of resistance (R24) and diode (D5) connecting triode (Q121), the emitter of described triode (Q121) is received the grid of a plurality of paralleling MOS FET pipes (Q10), the drain electrode of MOSFET pipe (Q10) connects solar module (201,202) positive input terminal, the source electrode process resistance (R23) of described MOSFET pipe (Q10) is received the inverting input of operational amplifier (U8B), and the normal phase input end that the DA module of described control circuit is received operational amplifier (U8B) connects; Output terminal at operational amplifier (U8A, U8B) is connected to the drain electrode that MOSFET manages (Q9, Q10) by resistance (R20, R24), and the grid of MOSFET pipe (Q9, Q10) is connected to control circuit, is used for the switching of two kinds of patterns of control constant pressure and flow; The drain electrode that the positive input terminal of solar module (201,202) is received MOSFET pipe (Q10) in parallel through intelligent topological circuit, the negative input end of solar module (201,202) is received canonical reference resistance eutral grounding end.
7. the described a kind of intelligent solar battery component outdoor test platform of any one according to claim 5, it is characterized in that described control circuit board comprises CPU module, DA module, AD sampling modulate circuit, code-wheel module, LCD display module, large capacity storage module and clock module; Described CPU module is connected to electronic load via the DA module, electronic load output terminal access AD sampling modulate circuit, the irradiance sensor of measurement environment factor, each temperature sensor are used for determining that the code-wheel module of solar module present position links to each other with the CPU module by the signal sampling modulate circuit; Described large capacity storage module, LCD module, clock module and mixed-media network modules mixed-media directly link to each other with the CPU module; Wherein, mixed-media network modules mixed-media links to each other with the remote control computer router by the test platform router, and is connected to remote control computer.
8. method of testing based on the described solar module outdoor test of claim 1 to 7 any one platform, it is characterized in that: its method of testing step is as follows:
(1) controls intelligent topological circuit by control circuit board, so that single-way switch (205,207) conducting, single-way switch (206,208) disconnects, and realizes that two groups of solar modules link to each other with load respectively, measures respectively many group solar module independent roles; Then measure the solar irradiance of current single solar module environment of living in, battery component temperature, environment temperature, and record data;
(2) measure short-circuit current Isc and the open-circuit voltage Voc of solar module in current environment, calculate the operating voltage Vapp of its approximate maximum power point place;
(3) electronic load is operated under the constant voltage mode, the current value I app when the measurement solar module works in operating voltage Vapp;
(4) by current value I app value, can calculate electronic load may need measurement under constant current mode points N cc ':
If Ncc ' less than 128, then measures the value of Ncc for Ncc ' is rounded of counting under the constant current mode; If Ncc ' more than or equal to 128, removes Ncc=128; Calculated by Ncc and to load on the electric current step delta I that controls under the constant current mode:
(5) under constant voltage mode, change to Vapp by control electronic load operating voltage by 0, step-length is Δ V; Switching electronic load is the constant current mode of operation again, controls its working current, changes to 0 by Iapp, and step-length is Δ I; Control circuit board passes through the AD sampling module, the IV curve data of record solar energy battery component;
(6) after the IV curved measurement is finished, again to solar irradiance in the current environment, ambient air temperature, assembly temperature is measured, and record data;
(7) by the IV family curve that obtains, calculate solar module short-circuit current Isc, open-circuit voltage Voc, maximum power point power P m, the current value I m of maximum power point place, the magnitude of voltage Vm of maximum power point place, the characteristic parameter of activity coefficient FF;
(8) after all data are processed and stored, repeat (1) step, carry out next solar module IV curved measurement constantly;
(9) when needs are adjusted the platform travel direction, rotational support rotating shaft (103) and fixed rotating shaft (105), by the accurate Control Component rotational angle of code-wheel and present position, synchronous signal is delivered to CPU and stores, and carries out the step of above-mentioned 1-8 again;
(10) control intelligent topological circuit by control circuit board, the second single-way switch (206) closure, two-way switch (208) conducting, the first single-way switch (205) and the first single-way switch (207) disconnect, so that two groups of solar modules are in two series connection, repeat above-mentioned (1)-(9) step, measure the IV family curve after many group solar modules are connected, and records store data.
9. the method for testing of described solar module outdoor test platform according to claim 8 is characterized in that, in described (2), operating voltage Vapp computing formula is as follows:
Vapp＝kVoc；
Wherein k gets 0.8; According to the Vapp value, may need the working point Ncv ' that measures under the computing constant die pressing type, formula is as follows:
If Ncv ' less than 128, then measures the value of Ncv for Ncv ' is rounded of counting under the constant voltage mode; If Ncv ' more than or equal to 128, then gets Ncv=128; Can calculate the change in voltage step delta V that electronic load is controlled by Ncv under constant voltage mode:
10. the method for testing of described solar module outdoor test platform according to claim 8, it is characterized in that, described control circuit carries out single pass every 5 seconds IV curves to solar module, the curve data and the environmental parameter that measure are stored in the large capacity storage module, and pass through Ethernet interface, through wireless router, with the remote control computer communication, with deposit data in the database of remote control computer.
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