Tag Archive for: winter solar light

winter solar light

Winter solar light operation time is short ?

Winter solar light operation time is short?

The arrival of the cold wave is undoubtedly “adding insult to injury” to many solar street lamps. Recently, many solar street lamp users have reflected on the network platform that street lamps will have different degrees of problems such as shortened endurance, slower charging speed, and inability to charge in low temperatures in winter.

winter solar light


Why is LiFePO4 battery life attenuation more serious than ternary lithium battery at low temperature? In fact, this is due to the structural differences of LiFePO4. The ternary material is Ni-Co Mn, which is arranged in a layered structure, but LiFePO4 adopts an octahedral olivine structure, so the LiFePO4 battery has better stability performance and more controllable capacity attenuation.

However, the structural differences also lead to the lower capacity of the LiFePO4 battery. The ions migrate easily in the hierarchical structure of ternary lithium, but the octahedron has greater resistance and lower activity during the migration process, and its power is more easily affected by the external temperature environment.

The capacity retention rate of LiFePO4 batteries is about 60-70% at 0 ℃. It decays to 40-55% at – 10 ℃ below zero, and only 20-40% at – 20 ℃. The ternary lithium battery can still maintain the normal battery capacity of about 70% – 80% at – 20 ℃, which is the reason why the solar streetlights equipped with LiFePO4 battery have a more serious life loss in winter.

winter solar lighting

Finally: in a short period of time, the problem of winter solar light endurance attenuation in winter is still “no solution”. It is undeniable that at present, solar streetlights have many advantages, such as power saving, easy installation, high intelligence and so on. But can users accept the shortboard with reduced endurance in winter? Perhaps manufacturers should point out the problem of low-temperature lighting to users when they publicize street lamps, instead of waiting until winter to complain that the lamps they buy are only on in the middle of the night or not at all. Of course, after spring, the winter solar light will return to its original state. er so
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solar light charge on a cloudy day

Winter Solar Street Light Operation Hours Reduced | Tips and Advice | LUXMAN Solar Light

In a short period of time, the problem of attenuation of the battery life of solar street light in winter is still “unsolvable”. It is undeniable that the current solar street lights have many advantages such as power saving, easy installation, and high intelligence.

Perhaps the manufacturer should indicate to the user the problem of low-temperature lighting when advertising the winter solar street light, instead of waiting until the winter to complain that the lights they bought only light up in the middle of the night or do not light up at all. Of course, when the spring flowers bloom, the lights will return to their original state.

Solution 1A: Manually remove snow and ice in time.

In high-latitude countries, heavy snow and extremely cold weather in winter can easily cause solar panels to be covered by heavy snow, resulting in low charging efficiency or inability to charge. It is necessary to clean the surface of solar panels in time, remove snow and ice, and try to replenish electricity.

Solution 1B: Automatic snow removal and deicing.

In addition to manual snow removal, ice removal, and dust removal, solar street lights with automatic cleaning tools can also be effective.

auto clean solar street light

Solution 2: Increase solar panel power and battery capacity.

This scheme is relatively simple. The increase in battery capacity and the corresponding solar panel also increase, which can provide additional power for street lights and extend the number of lighting days.

It is feasible to increase the solar panel alone without increasing the battery. Objectively, it can charge more batteries in a shorter period of time, which is particularly important in winter.

It doesn’t make sense to increase the battery alone without increasing the matching solar panel. Because the charging efficiency of the original solar panels is fixed, if the charging is insufficient every day, the added battery AH is wasted.

Solution 3: Shorten the lighting time.

Shorten the lighting time of solar street lights every night through remote control settings. For example, the standard working time is 12 hours per night, adjusted to 6 hours. That is, the lights are turned on in the first half of the night, and the lights are not turned on in the second half of the night. This reduces battery energy consumption and extends the number of lighting days. But at the same time, there is a problem, that is, the nighttime in winter is longer, so shortening the lighting time is not very scientific.

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Solution 4: Set up the battery insulation package.

Design a heat preservation plan for the battery pack. When the temperature is lower than a certain value, the system can automatically heat up and automatically shut down when it reaches a certain temperature value. This can ensure that the battery pack works within a temperature range to achieve optimal use. The technical difficulty is a bit high, and only a few companies can do it.

Solution 5: Increase wind power generation.

From pure solar panel power generation, it becomes both solar power generation and wind power generation. Adding a channel for supplementing electricity greatly improves the charging efficiency of the battery. At the same time, we must pay attention to adding wind turbines, the cost will be higher.

Solution 6: The mains power complements each other.

Add an AC power adapter, which will be replenished by the mains when the battery is short. Controlled by the main controller, priority is given to using solar power, and when the battery power is insufficient, it will automatically switch to mains power. At present, this program is mature. It is the first product to be launched in the Nordic countries, and it has been successfully installed. Can fully meet the lighting needs.

In summary, as an outstanding leader in the solar street light industry, LUXMAN has developed products that are not only rich in variety and excellent in appearance, but more importantly, we rely on more than ten years of product production experience, customer feedback, and stricter environmental protection. skills requirement.

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