Battery Used In Solar LED Street Lamp

With the continuous adjustment of the energy structure of various countries in the world in recent years, the demand for energy continues to increase. As a kind of renewable energy, solar energy has attracted more and more attention for its environmental protection, pollution-free, and widely distributed characteristics. Among them, there are more and more road lighting projects represented by solar led street lamps. The application of solar led street lamps is also more and more widely from cities to rural areas, from roads to homes. People who buy and use solar led street lamps are most concerned about not only the lighting effects, but also the lighting time and service life of the street lights. The accessory that has the greatest impact on the lighting time and service life can be said to be the battery. The battery is the most important one of the many accessories that make up the solar led street lamp. The function of the accumulator is to store the electric energy produced by the solar cell module during the day, and then provide it to street lights at night. In the continuous rainy days, solar led street lamps cannot absorb sunlight through the battery panels, and they need to rely on the electric energy stored in the battery to power the street lights. Therefore, the battery plays the key role.

In order for batteries to provide good help for solar led street lamp, we must first configure batteries with appropriate capacity. Many users do not know the battery equipment, here we briefly introduce the method of battery equipment.

For example: 12V battery system

Two sets of 30W street lights, a total of 60W

Current=60W*12V=5A

If the street lamp needs to be illuminated for 7 hours every night, and it needs to meet the lighting for 5 consecutive cloudy and rainy days

Battery capacity = 5A x 7h x 5 days = 175AH

In addition, in order to prevent the battery from over-discharge and over-charge, the battery is generally charged to 90%, and discharged to 20%.

175AH * 70%=250AH

In addition to choosing the right capacity, the type of battery matters a lot. At present, the solar street lamp market mainly uses colloidal batteries, lead-acid batteries, lithium iron phosphate batteries and ternary lithium batteries.

The plates of lead-acid batteries are made of lead and lead oxides, and the electrolyte is an aqueous solution of sulfuric acid. The main advantages of lead-acid batteries are that the voltage is relatively stable, the price is relatively cheap, and the safety is high. At present, they still occupy a dominant position in the use of the solar led street lamp industry.

The colloidal battery mainly replaces the sulfuric acid electrolyte with the colloidal electrolyte inside, which improves the storage capacity, discharge capacity, safety performance and life span; in addition, the colloidal battery can be used in the temperature range of -40℃-65℃, The low temperature performance is relatively good, and it can be used safely under various harsh conditions.

Ternary polymer lithium battery refers to a lithium battery that uses lithium nickel cobalt manganate (Li (NiCoMn) O2) as the positive electrode material. Its theoretical life is 2000 charge and discharge cycles, and it has high energy density, small size, and good low temperature resistance. However, the chemical reaction is particularly strong. Once oxygen molecules are released, the rapid burning of the electrolyte under the action of high temperature can easily cause accidents.

Lithium iron phosphate battery is a lithium ion battery that uses lithium iron phosphate (LiFePO4) as the positive electrode material and carbon as the negative electrode material. It has large capacity, light weight, good high temperature performance and long service life. This is a more popular solar street lamp battery on the market.

The above calculations and types of battery capacity for solar led street lamp are shared here for everyone. At present, the most cost-effective solar power street lamps use lithium batteries, and lithium iron phosphate batteries are one of the more popular lithium batteries. They have relatively good deep cycle capabilities, enough cycles of charge and discharge, and low self-discharge rate. It has good overcharge and overdischarge capabilities. If you need to buy solar led street lamps and need more information, please consult us. As a professional solar led street lamp manufacturer, we will equip you with the best solar led street lamp.