1. The output is direct current. At present, almost all household appliances use alternating current, so it is necessary to convert the direct current output by solar panels into alternating current before it can be used in daily life.

2. Affected by daylight time and light intensity. The electrical energy output by the solar panel is proportional to the intensity of the sunlight, so in the case of insufficient light or the projection area of the solar panel is too small, the output of the electrical energy will be affected.

3. Energy storage issues. Solar panels can only generate electricity in full sunlight and cannot operate at night or in rainy weather. Therefore, it is necessary to store electrical energy in the battery for emergency use.

1. Install the solar panels in the sunlight to receive the sunlight.

2. Connect the DC converter between the solar panel and the household appliance, and convert direct current to alternating current.

3. Store the electrical energy output by the solar panels into the battery in case of emergency.