The following measures can be taken to improve the problem of solar street lights' reduced efficiency in winter:

1. Daily maintenance optimization

Cleaning solar panels

Remove snow, frost and dust regularly to avoid blocking and affecting the photoelectric conversion efficiency. It is recommended to clean at least once a week in winter, especially after snowfall.

Adjust the installation angle

According to the characteristics of low solar altitude in winter, adjust the tilt angle of the solar panel to 60°-70° to increase the amount of sunlight received. Avoid surrounding buildings or trees from blocking and forming shadow areas.

2. Hardware performance improvement

Upgrade equipment configuration

Increase the power of solar panels (it is recommended to reserve 20%-30% redundancy)

Select low-temperature lithium batteries (such as lithium iron phosphate batteries), which can still maintain more than 70% capacity at -20℃

Install lamps with protection level above IP66 to prevent snow and water from penetrating

Intelligent snow removal technology

Use electric heating glass or automatic vibration snow removal device to reduce the frequency of manual cleaning. Experimental data shows that the power generation of systems with snow removal function can be increased by 40% in winter.

3. System optimization strategy

Energy-saving mode adjustment

In winter, the intelligent dimming function can be enabled to automatically reduce the brightness to 30% during periods of low traffic and extend the lighting time. Combined with microwave sensing technology, further energy saving of 30%-50%.

Energy storage management optimization

Increase the battery pack capacity (it is recommended to configure it at 1.5 times the summer demand), and add an insulation layer to maintain an operating temperature above 0°C. Data shows that insulation measures can increase battery efficiency by 25%.

4. Special situation response

Continuous rainy and snowy weather plan

Configure the mains complementary interface, and switch the power supply 14 in extreme weather. At the same time, set low voltage protection (10.8V) to avoid battery over-discharge damage.

Through the above comprehensive measures, the lighting time of solar street lights in winter can be extended from the conventional 4-5 hours to more than 8 hours, and the overall efficiency of the system is improved by about 60%. It is recommended to conduct professional inspections every quarter, focusing on checking the cable sealing and controller parameter settings.