Before the solar cell mounting assembly, in order to determine whether the solar cell module can work properly, the solar cell should be inspected and detected. After opening the solar cell module, the solar cell module should be checked for the following items:1) Check whether the nameplate, check the specifications, models, and quantity behind the solar cell module, if it does not meet the immediate replacement, can not be barely constructed.
2) Check the appearance of solar cell experts, solar cell modules should have no deformation, front glass is not damaged, scratched and cracks, no scratch burrs on the back.
3) Check the positive and negative logo of the solar cell module to ensure that the positive and negative connections are correct, and the application multimeter is verified to prevent the target error. The verification method is: use the red black table pen of the digital multimeter to contact the solar cell module, displayed as a positive value, the red surface pen corresponds to the electrode, and the negative value is negative, the electric pole is negative, other positive and negative terminals The method is the same.
In the case of normal solar cell modules, the solar cell module is detected, and the general test item has an open circuit voltage and short circuit current. When the measurement, the installer must be compared to the technical manual of solar cell manufacturers. According to the component parameters, each solar cell module is detected, and the parameter value of solar cell experts should meet the product factory index.
The measurement of the open circuit voltage must be carried out before the solar cell module is hot, because the output voltage of the solar cell module decreases as the temperature rise. The measurement of the short circuit current is directly affected by the sunshine strength, unless it can measure the sunshine strength, otherwise it can only be an approximate estimate of the output current characteristics of the solar cell module. When measuring, the surface of the solar cell module is vertically positive for the sun, most of the solar cell modules, and the data different from the product specification is within 5 ~ 10%, preferably measure the battery assembly under the strongest in the afternoon. .
When the open circuit voltage is detected, the solar cell module must be performed before the sunlight is ill, because the output voltage of the solar cell assembly will decrease as the temperature rise. The measurement of the short circuit current is directly affected by the sunshine strength, unless it can measure the sunshine strength, otherwise it can only be an approximate estimate of the output current characteristics of the solar cell module. When detecting, the surface of the solar cell module is vertically positively focused on the scene measurement of the sun, most of the solar cell modules, and the data different from the product specification is within 5 ~ 10%, preferably measure the battery assembly under the strongest in the afternoon. .
The solar cell modules close to the work parameters should be selected in the same sub-array, and the solar cell assembly of the rated operating current is equal or close to the same. Before installing the solar cell assembly, the threading wells should be processed on the solar cell module. Recommend: LiFePO4 Battery Manufacturer Energy storage battery Manufacturer Integrated machine energy storage battery series Manufacturer Lead lithium battery Manufacturer Outdoor Backup Battery Manufacturer Portable outdoor power supply Manufacturer Power battery Manufacturer Powerwall LiFePO4 Battery Manufacturer Battery rack Manufacturers Telecom LiFePO4 Battery Manufacturer Wall mounted battery storage Manufacturer China Lifepo4 Battery
