CN109756188B - Method and device for testing electrical performance of double-sided solar cell module - Google Patents
Method and device for testing electrical performance of double-sided solar cell module Download PDFInfo
- Publication number
- CN109756188B CN109756188B CN201910049417.XA CN201910049417A CN109756188B CN 109756188 B CN109756188 B CN 109756188B CN 201910049417 A CN201910049417 A CN 201910049417A CN 109756188 B CN109756188 B CN 109756188B
- Authority
- CN
- China
- Prior art keywords
- light source
- irradiance
- double
- solar cell
- source system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Testing Of Individual Semiconductor Devices (AREA)
- Photovoltaic Devices (AREA)
Abstract
A method and a device for testing electrical performance of a double-sided solar cell module belong to the field of solar cell performance testing and are characterized in that: irradiating the front side and the back side of the double-sided solar cell module with initial values of irradiance at the same time through two light source systems; and after the light source irradiance output by the two light source systems is in a stable state, adjusting the irradiance to a set value, adjusting the load within the illumination time, measuring the current and the voltage of the front side and the back side of the double-sided battery assembly to obtain an IV characteristic curve of the double-sided battery assembly, and completing the electrical property test. In the one-time test process, the irradiance can be self-adjusted and accurately controlled through the front reference cell and the back reference cell, so that the IV test is more accurate.
Description
Technical Field
The invention belongs to the field of solar cell performance testing, and particularly relates to a method and a device for testing electrical performance of a double-sided solar cell module.
Background
The double-sided solar cell module is a solar cell module which can convert light energy into electric energy on both the front side and the back side. When sunlight irradiates the double-sided component, part of light can be reflected to the back of the double-sided component by the surrounding environment, and the part of light is absorbed by the cell, so that certain contribution is generated to the photocurrent and the efficiency of the cell, and the power generation gain of the component is further improved.
At present, with the increase of double-sided solar cell modules in the market, and the number of N-type modules or P-type high-efficiency modules is large, and then a traditional single-sided flash solar cell module tester is adopted, the power of the modules is difficult to accurately test in one-time test, so that a user cannot make correct evaluation. In order to achieve accurate testing, an equivalent light intensity method and a formula method which are commonly adopted in the existing testing method are single-sided flash, in the testing process, the front side and the back side are required to be tested under standard conditions, a shading material shields the back side, after the front side of the assembly is tested, the assembly is turned over, the shading material shields the front side, the assembly is tested again, electrical performance parameters of the front side and the back side of the assembly are respectively obtained, the testing efficiency is low, and errors are large.
Disclosure of Invention
The invention aims to solve the problems and provides a method and a device for testing the electrical performance of a double-sided solar cell module.
According to the electrical property test method of the double-sided solar cell module, the front side and the back side of the double-sided solar cell module are irradiated with initial values of irradiance at the same time through the two light source systems; and after the light source irradiance output by the two light source systems is in a stable state, adjusting the irradiance to a set value, adjusting the load within the illumination time, measuring the current and the voltage of the front side and the back side of the double-sided battery assembly to obtain an IV characteristic curve of the double-sided battery assembly, and completing the electrical property test.
The invention discloses an electrical performance test method of a double-sided solar cell module, which comprises the following specific steps of:
1) the method comprises the following steps that firstly, two light sources work with an irradiance initial value according to a front light source system and a back light source system, and the irradiance initial value is related to hardware circuit parameters of the light source systems and has deviation with a set value, so that the irradiance initial value needs to be adjusted to the set value before data acquisition;
2) setting reference batteries on the front side and the back side of the double-sided solar cell module, judging through the light source irradiance received by the reference batteries respectively, comparing the front side reference battery and the back side reference battery with calibrated values StdIsc1 and StdIsc2 according to actually measured short-circuit currents Isc1 and Isc2, multiplying the coefficients by the light source irradiance initial values, and adjusting the light source irradiance to a preset value;
3) when the irradiance of the light sources on the front side and the back side of the double-sided solar cell module reaches a set value, the acquisition system measures the current and the voltage under different loads by adjusting the load size within the illumination time to obtain the IV characteristic curve of the module, and the electrical property test is completed. And obtaining related electrical performance parameters of the module, such as parameters of open-circuit voltage Voc, short-circuit current Isc, maximum working voltage Vmax, maximum working current Imax, maximum power Pmax, filling factor FF, series resistance Rs, parallel resistance Rsh, efficiency Eff and the like, by a software algorithm according to the IV characteristic curve and the size and connection condition of the solar cell in the module.
The electrical property testing device of the double-sided solar cell module comprises a controller, a light source system and a power supply system which are sequentially connected; the light source system comprises a front light source system and a back light source system; the front light source system and the back light source system are respectively arranged at two sides of the test surface; a front reference battery and a back reference battery are arranged between the front light source system and the back light source system; the front reference battery and the back reference battery are arranged on the test surface, and the front sides of the reference batteries respectively correspond to the respective light source directions. The controller is used for controlling the light source irradiance of the light source system; the front reference battery and the back reference battery are used for obtaining measured short-circuit currents Isc1 and Isc2, are multiplied with a light source irradiance initial value by being compared with calibrated values StdIsc1 and StdIsc2 as coefficients, and the light source irradiance is adjusted to a set value through a controller; the tested double-sided solar cell module is arranged between the front light source system and the back light source system.
According to the method and the device for testing the electrical property of the double-sided solar cell module, in the one-time testing process, the irradiance can be self-adjusted and accurately controlled through the reference cells on the front side and the back side, so that the IV test is more accurate.
Drawings
FIG. 1 is a schematic block diagram of the structure of a double-sided solar cell module electrical performance testing device according to the present invention;
FIG. 2 is a schematic diagram of irradiance self-adjustment as described in embodiments of the present invention;
fig. 3 is a schematic diagram of a PID control circuit adjusting irradiance self-adjustment according to an embodiment of the present invention.
Detailed Description
Example one
The electrical performance testing device of the double-sided solar cell module, as shown in fig. 1, comprises a controller, a light source system and a power supply system which are connected in sequence; the light source system comprises a front light source system and a back light source system; the front light source system and the back light source system are respectively arranged on two sides of the measuring surface; a front reference battery and a back reference battery are arranged between the front light source system and the back light source system; the front reference cell and the back reference cell are arranged on the same horizontal plane. The controller is used for controlling the light source irradiance of the light source system; the front reference battery and the back reference battery are used for obtaining measured short-circuit currents Isc1 and Isc2, are multiplied with a light source irradiance initial value by being compared with calibrated values StdIsc1 and StdIsc2 as coefficients, and the light source irradiance is adjusted to a set value through a controller; the tested double-sided solar cell module is arranged at a test surface position between the front light source system and the back light source system. After the electric parameters of the component and the reference battery are illuminated, the battery converts light energy into electric energy, and the current and the voltage of the battery are acquired through a data acquisition system in the controller.
The invention discloses an electrical performance test method of a double-sided solar cell module, which comprises the following specific steps of:
1) the method comprises the following steps that firstly, two light sources work with an irradiance initial value according to a front light source system and a back light source system, and the irradiance initial value is related to hardware circuit parameters of the light source systems and has deviation with a set value, so that the irradiance initial value needs to be adjusted to the set value before data acquisition;
2) setting reference batteries on the front side and the back side of the double-sided solar cell module, judging through the light source irradiance received by the reference batteries respectively, comparing the front side reference battery and the back side reference battery with calibrated values StdIsc1 and StdIsc2 according to actually measured short-circuit currents Isc1 and Isc2, multiplying the coefficients by the light source irradiance initial values, and adjusting the light source irradiance to a set value;
3) when the irradiance of the light sources on the front side and the back side of the double-sided solar cell module reaches a set value, the acquisition system measures the current and the voltage under different loads by adjusting the load size within the illumination time to obtain the IV characteristic curve of the module, and the electrical property test is completed. And obtaining related electrical performance parameters of the module, such as parameters of open-circuit voltage Voc, short-circuit current Isc, maximum working voltage Vmax, maximum working current Imax, maximum power Pmax, filling factor FF, series resistance Rs, parallel resistance Rsh, efficiency Eff and the like, by a software algorithm according to the IV characteristic curve and the size and connection condition of the solar cell in the module.
As shown in fig. 2, at T0-T1In the time period, after the two light sources flash, the irradiance of the light sources is in an unstable state and shows an oscillation phenomenon, and after a short time, the light source output of the two light source systems is in a stable state, namely at T1-T2The irradiance reaches an initial value over a period of time. At this time, the irradiance initial value has deviation from the set value, for example, the irradiance is higher or lower than the initial value, so the irradiance of the front and back light sources needs to be adjusted, and the implementation mode is to adjust the reference voltage of the irradiance control circuit to adjust the irradiance. Finally, when the irradiance reaches a set value and keeps a certain stationary time, namely T2-T3Within the range, the data acquisition system in the controller obtains the IV characteristic curve of the component by adjusting the load size and measuring the current and voltage under different loads simultaneously.
Example two
As shown in fig. 3, at T0-T1In the time period, according to the set values of the hardware circuit parameters in the front light source system and the back light source system, the irradiance of the two light sources responds to the set values, the PID control circuit is required to adjust the output parameters of the hardware circuit according to the same set values, the irradiance of the two light sources is changed, and the condition that the output of the light sources is the set irradiance value is met. At T1-T2And completing various electrical property tests within a time period.
EXAMPLE III
When the test object is a standard plate, after the front side and the back side of the component are illuminated, and before the preset value of irradiance is not reached, the reference battery actual measurement current value and the standard value of the front side and the back side of the component are compared, and meanwhile, the standard plate can also be compared according to the actual measurement short circuit current value and the standard value, namely after two comparison coefficients of the reference battery and the component are multiplied by the actual measurement irradiance, the irradiance is self-adjusted to meet the real test condition, the measurement of double-sided coefficients is not needed, and the electrical property test of the front side and the back side of the component can be completed through one-time test.
Claims (2)
1. A double-sided solar cell module electrical property test method is characterized in that: irradiating the front side and the back side of the double-sided solar cell module with initial values of irradiance at the same time through two light source systems; the two light sources work with initial values of irradiance according to the front light source system and the back light source system, and the initial values of irradiance are related to hardware circuit parameters of the light source systems, and the initial values of irradiance have deviation from a set value, so that the initial values of irradiance need to be adjusted to the set value before data acquisition and after the irradiance of the light sources output by the two light source systems is in a stable state;
setting reference batteries on the front side and the back side of the double-sided solar cell module, judging through the light source irradiance received by the reference batteries respectively, comparing the front side reference battery and the back side reference battery with calibrated values StdIsc1 and StdIsc2 according to actually measured short-circuit currents Isc1 and Isc2, multiplying the coefficients by the light source irradiance initial values, and adjusting the light source irradiance to a preset value;
and after the irradiance of the light sources on the front side and the back side of the double-sided solar cell module reaches a set value, adjusting the load within the illumination time, measuring the current and the voltage on the front side and the back side of the double-sided solar cell module to obtain an IV characteristic curve of the double-sided solar cell module, and completing the electrical property test.
2. The utility model provides a two-sided solar module electrical property testing arrangement which characterized in that: the device comprises a controller, a light source system and a power supply system which are connected in sequence; the light source system comprises a front light source system and a back light source system; the front light source system and the back light source system are respectively arranged at two sides of the test surface; a front reference battery and a back reference battery are arranged between the front light source system and the back light source system; the front reference battery and the back reference battery are arranged on the test surface, and the front sides of the reference batteries respectively correspond to the respective light source directions; the controller is used for controlling the light source irradiance of the light source system; the front and back reference cells are used to obtain measured short circuit currents Isc1 and Isc2, multiplied as coefficients by the initial value of light source irradiance by comparison with calibrated values stdicc 1 and stdicc 2, and adjusted to set values by the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049417.XA CN109756188B (en) | 2019-01-18 | 2019-01-18 | Method and device for testing electrical performance of double-sided solar cell module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049417.XA CN109756188B (en) | 2019-01-18 | 2019-01-18 | Method and device for testing electrical performance of double-sided solar cell module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109756188A CN109756188A (en) | 2019-05-14 |
| CN109756188B true CN109756188B (en) | 2020-09-08 |
Family
ID=66405947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910049417.XA Active CN109756188B (en) | 2019-01-18 | 2019-01-18 | Method and device for testing electrical performance of double-sided solar cell module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109756188B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021188051A1 (en) * | 2020-03-17 | 2021-09-23 | National University Of Singapore | Energy yield estimation measurement methodology for solar cells and modules |
| CN111478664A (en) * | 2020-05-29 | 2020-07-31 | 浙江晶科能源有限公司 | Photovoltaic module test system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311742A (en) * | 2007-05-22 | 2008-11-26 | 中芯国际集成电路制造(上海)有限公司 | Method for testing solar battery assembly efficiency |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002270878A (en) * | 2001-03-14 | 2002-09-20 | Atsushi Iga | Method for evaluating output of solar battery, computer readable data recording medium for recording output evaluation program and apparatus for evaluating output |
| JP5872416B2 (en) * | 2012-08-09 | 2016-03-01 | 本田技研工業株式会社 | Method for manufacturing thin film solar cell |
| CN203054178U (en) * | 2012-12-24 | 2013-07-10 | 苏州阿特斯阳光电力科技有限公司 | Performance testing device for double-face back-contact solar cells |
| CN103353577A (en) * | 2013-06-21 | 2013-10-16 | 奥特斯维能源（太仓）有限公司 | Electrical property test device of double-sided solar cell and test method thereof |
| CN104201988B (en) * | 2014-09-17 | 2016-03-23 | 陕西众森电能科技有限公司 | A kind of solar module electric performance test method |
| CN105337577A (en) * | 2015-10-17 | 2016-02-17 | 保定嘉盛光电科技股份有限公司 | Tester of solar-energy N-type cell double-glazed solar PV module |
-
2019
- 2019-01-18 CN CN201910049417.XA patent/CN109756188B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101311742A (en) * | 2007-05-22 | 2008-11-26 | 中芯国际集成电路制造(上海)有限公司 | Method for testing solar battery assembly efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109756188A (en) | 2019-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109756188B (en) | Method and device for testing electrical performance of double-sided solar cell module | |
| Thenkani et al. | Design of optimum maximum power point tracking algorithm for solar panel | |
| Abdulkadir et al. | A new approach of modelling, simulation of mppt for photovoltaic system in simulink model | |
| CN104201988B (en) | A kind of solar module electric performance test method | |
| Zhang et al. | Comparison of double-side and equivalent single-side illumination methods for measuring the I–V characteristics of bifacial photovoltaic devices | |
| CN110729213A (en) | Final test method and automatic detection device for intelligent photovoltaic module | |
| CN105785281A (en) | Photovoltaic grid-connected inverter MPPT (maximum power point tracking) efficiency test method and device | |
| Durán et al. | Methodology and experimental system for measuring and displaying I–V characteristic curves of PV facilities | |
| WO2014199495A1 (en) | Photovoltaic cell module reliability test method and reliability test device | |
| CN104953948A (en) | Error correction method for dynamic MPPT (maximum power point tracking) efficiency test on photovoltaic inverter | |
| Maammeur et al. | A numerical resolution of the current-voltage equation for a real photovoltaic cell | |
| Hu et al. | Reflection-type single long-pulse solar simulator for high-efficiency crystalline silicon photovoltaic modules | |
| Ferretti et al. | Performance testing of high-efficient PV modules using single 10 ms flash pulses | |
| CN103353576B (en) | Based on the photovoltaic module energy output method of measurement of volt-ampere characteristic | |
| CN108280287B (en) | Method for extracting solar cell parameters | |
| CN111368491A (en) | Simplified photovoltaic module double-diode model modeling and parameter extraction method | |
| CN202206333U (en) | Solar integration testing and control system | |
| CN111384895A (en) | Solar cell test system, solar cell test method and storage medium | |
| CN204206107U (en) | A kind of solar cell properties tester | |
| Nowlan et al. | Evaluations of an Automated Photovoltaic Module Test System | |
| Pravettoni et al. | From an existing large area pulsed solar simulator to a high intensity pulsed solar simulator: characterization, standard classification and first results at ESTI | |
| CN113054908A (en) | Method for testing electrical property of solar cell | |
| Chang et al. | Implementation of a power supply with the characteristics of solar panels under partially shaded | |
| Azli et al. | Effect of fill factor on the MPPT performance of a grid-connected inverter under Malaysian conditions | |
| Neçaibia et al. | A simple theoretical method for the estimation of dynamic resistance in photovoltaic panels |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |