Since the discovery of the electrical power, one of the great problems of humanity has been the storage of the same. The system of distribution, transportation and energy consumption works in real time, instantly generating the existing energy demand on the network.
The lithium batteries They are very popular in many sectors, and are found on the market both low current lithium batteries as models with the most demanding technical characteristics.
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The renewable energy (solar, hydro, wind, etc.) have made technical progress in this and other aspects to this day, due to the growing need for a change in the energy system. New technologies are being explored for the electrical energy storage, As the hydrogen (H2) accumulators or lithium ion (Li-Ion) batteries, and more specifically, the lithium iron phosphate (LiFePO4) batteries.
Stacks of lithium ion, also called Li Ion batteries o Lithium, use lithium salts as electrolyte to release electrons through chemical reactions that store electrical energy. However, the deterioration due to heat and its sensitivity to extreme temperatures may carry the risk of explosión o combustion of the battery, which requires sophisticated systems of protección y to maximise security and your enjoyment..
It is becoming more and more common to see Li Ion batteries y LiPo (lithium polymers) in computers, tablets, smartphones, RC cars and other portable electronic devices. With the integration of lithium batteries into the sector photovoltaic solar, both in the field industrial and the home, a revolution is expected in the way we understand the use of energy in homes.
The main brands that produce lithium batteries for solar installations are BYD y Pylontech.
En WccSolar We put at your disposal the The most advanced lithium batteries on the market, prepared for both photovoltaic installations demanding as for sectors looking for an accumulator powerful, fast, efficient, having a Long useful life or with a Warranty period that covers its correct operation.
The lithium batteries They are the accumulators with the highest useful life of the market, with a Extremely low self-dischargea whirlpool bath, extraordinary depth of discharge y no memory effect. This means that lithium batteries can be discharged at 100% or stored at half load without suffering damage. They are made with very light elements, which allows the creation of accumulators Li-Ion de weight reduction, various shapes and much higher performance than the conventional batteries. On energy density It is up to three times greater than traditional batteries, and are able to withstand charge and discharge current rates bigger.
One of the most outstanding qualities of lithium batteries is their high voltage, with some models working in variable ranges from 300V to 450V, which reduces the corrients that circulates and avoids warm ups y wiring losses, among other benefits.
We can consider the BMS technology (Battery Management System) as a security element essential to avoid accidents when using the lithium batteries. This is important, since if lithium batteries are mistreated, they can cause smoke clouds, sparks and even explosions. Batteries must be charged in a manner safe to avoid this type of accident.
Since lithium batteries They are relatively new, there is a great ignorance about their characteristics, care and applications. However, there is increasing interest in learning how they work and the ability to perform renovations o extensions.
Three essential components should be highlighted in any installation with lithium batteries:
It is not necessary to change the BMS when a lithium battery is renewed, unless there is a fault in the system. If the battery has lost autonomy but is still working, the BMS is probably in good condition and it is only necessary to change the lithium cell packHowever, if the battery has suddenly stopped working, it could be due to a fault in the cells or in the BMSIf the battery is less than 2 years old and has suddenly stopped working, the fault is most likely with the BMS.
It is recommended to change the BMS when replacing lithium cells, as this reduce labor costs and ensures that the system is covered by warranty.
Points to take into account about lithium batteries
Unlike other battery technologies, lithium batteries o LFP require a BMS (Battery Management System) to ensure its correct operation.
What happens if you don't use a BMS? The lithium battery cell would fail and tension on it increases above 4,2V or if it falls below 2,5V.
The cells of the lithium batteries o LFP not self-adjust at the end of the charge cycle. This is because the cells are not completely equal, so at the end of the charge cycle some cells are fully charged or discharged, while others are not. The differences between cells will increase if they are not equalize or balance properly.
In other types of batteries, even if the cells are fully charged, a small amount of current still flows to help charge the rest of the cells. However, in lithium batteries o LFP, the current passing through a fully charged cell is almost null, which causes the cells to become degraded over time mismatch. This imbalance between cells increases over time and can cause irreparable damage, significantly shortening battery life.
The incorporation of a BMS It is essential to avoid overvoltage y undervoltage during the load y download from the battery, thus protecting the lithium battery and prolonging its useful life.
Maintenance Lithium batteries
Unlike other types of batteries such as lead acid batteries abierto, weary Stationary OpzS Batteries or TOPzS Stationary BatteriesLithium batteries do not require periodic monitoring if they need to be refilled.
Lithium batteries do not require maintenance, nor do they emit gases during operation, so lithium batteries are an excellent option for those uses in which you cannot (or do not want) to be aware of the status of the batteries. lithium.
All batteries, including of course lithium batteries, are recommended to be installed indoors, protected from direct sunlight, rain, wind and high temperatures to ensure optimal performance, durability and charging efficiency. download.
WCC SOLAR SL has been a beneficiary of European Funds aimed at improving the competitiveness of SMEs. Thanks to these funds, it has launched an Action Plan to strengthen the digitalization and competitiveness of SMEs by 2024. To this end, it has received support from the Seville Chamber of Commerce's Digital SME Program. #EuropeFeels
