Maintenance method of solar street light battery

With the gradual improvement of the application of solar street lights in urban roads, road lighting must not only meet the requirements of use and improve the taste of the city, but also be safe, reliable and durable, provide people with a good travel and living environment, and create social benefits. Save maintenance costs. Because solar street lights are installed outdoors, maintenance is particularly important. As a very important part of solar street lights, the battery also needs to pay attention to its maintenance. What are the maintenance methods for solar street light batteries?

1. To prevent insufficient charging

In addition to preventing overcharging, solar cells should also prevent undercharging. If the charging has been insufficient, it may also be caused by a problem with the rack system, or the voltage is too low. Frequent undercharging will result in fewer cycles of the battery and will also shorten the life of the battery.

2. To prevent overcharging

The battery life of solar street lights depends not only on external maintenance but is also closely related to internal heat accumulation. If the solar battery is overcharged, the temperature inside the battery will rise step by step, resulting in thermal runaway. Phenomenon. If serious, it may greatly shorten the life of the battery, or even make the battery scrapped. If we want to prevent the battery from overcharging, we must provide the charging voltage value in strict accordance with the manufacturer's instructions.

3. To prevent over-discharge

The depth of discharge of the battery is closely related to the design charge and discharge cycles (service life) of the battery. As a ratio, if the depth of discharge is 10%, the number of cycles is 10,000, and when the depth of discharge is 70%, the number of cycles is only 500. The greater the depth of discharge, the fewer the number of cycles.

If the over-discharge is serious, the life of the battery will be shorter. If it is serious, the battery may not be able to be activated again to a good state or even be scrapped all at once. In order to prevent the battery from being over-discharged, it is necessary to install an additional BMS system in the battery, which can adjust the voltage of the battery, balance the voltage and current between the batteries, and prevent one from being full and the other starving.

4. Control the ambient temperature

A particularly high-temperature environment will shorten the life of the solar battery by half, so it is very important to control the temperature of the solar battery. The service life of the battery is relatively long in normal temperature weather, and in high-temperature weather, the battery suffers very much.