Application of solar battery in photovoltaic system

High-performance energy storage batteries are of great importance to the development of photovoltaic industry. Compared with lead-acid batteries, lithium solar battery has advantages of high energy storage efficiency, high cycle life, long service life and low cost. Taking advantage of solar battery as energy storage power supply, energy efficiency can be improved to about 90%, so it is very suitable for a new energy storage device.

Principle of solar battery of Photovoltaic energy storage system

Lithium solar battery is an indispensable part of solar photovoltaic power generation system. Its main function is to store the energy of the photovoltaic power generation system and supply power to the load in the case of insufficient sunshine, night and emergency. 

Common types of storage 12v 42ah Lifepo4 Battery  have lead-acid battery, energy storage battery, alkaline batteries, solar battery and super capacitor. They are respectively applied in different situations or products. Lithium iron phosphate is one of the fastest growing solar battery. At present, there are mainly the lithium iron phosphate batteries and ternary lithium battery.

However, lithium iron phosphate then appeared (LiFePO4). This more recent kind of lithium solution had a little lower energy density but was by nature non-combustible. In addition to being safer than other lithium chemistries, lithium phosphate batteries have a number of advantages, especially for high power applications.Sometimes, the lithium battery price is also a very important factor.

Solar batteries are an impressive upgrade for homeowners with solar power. They give you the ability to store the electricity you generate and use it when the sun goes down (or when the power lines go down).

“An average homeowner typically will draw 2 kilowatts maximum during an outage, and an average of 750 to 1,000 watts during the course of the outage,” he said. “This means a Brightbox will last for 10 to 12 hours, while a Powerwall will last for 12 to 15 hours.”

Solar Battery Cost

Solar batteries are currently on the expensive side. Solar batteries range from $5,000 to $7,000+, and from $400/kWh to $750/kWh. These prices reflect the battery itself and do not include the cost of installation or any additional equipment.

The basic requirement of solar photovoltaic power generation systems for energy storage

Solar power generation system has high cost, low conversion efficiency and strong changes with the environment, so it has high requirements for energy storage. The service life of solar photovoltaic power generation system is generally 20 years, it required the energy storage to have long service life, stable performance, high energy efficiency and strong ability to adapt to the environment.

Performance analysis of solar battery:

12v 42ah Lifepo4 Battery  is a new type of secondary power supply developed in recent years. Its characterized in large input and output power, wide operating temperature range, no memory effect, maintenance-free, with 2000 times of charge and discharge service life, safety and environmental protection, becoming the leading role of chemical batteries.Sometimes, lithium car battery can also play an important role. 

Solar battery voltage platform for 3.2 V, is 2 times more than lead-acid battery, and the volume ratio energy 4 ~ 5 times that of lead-acid battery. If use solar batteries instead of lead-acid batteries used in photovoltaic power generation system, can greatly reduce battery of space and reduce maintenance workload. In terms of photovoltaic energy storage efficiency, solar batteries has obvious advantages.

Maxworld lithium solar battery

Application of solar battery in photovoltaic power generation

As renewable energy sources such as wind and photovoltaic power generation industry fast development, the pollution of power network disturbance, randomness caused by light and the wind problems become increasingly serious. 

Since 2011, based on lithium polymer battery chemistry textbook development testing and application of energy storage system, people have been conquered the energy storage system in one application problem. Photovoltaic module array uses the photovoltaic effect of solar panels to convert light energy into electrical energy, and then charges the lithium polymer battery pack. The inverter converts direct current to alternating current to power the load. Intelligent controller according to sunshine intensity and load changes, constantly switch and adjust the working state of the battery group. On the one hand, the adjusted electric energy directly to dc or AC load. 

On the other hand, the excess electric energy will be transferred to the storage battery group when the power generation cannot meet the needs of the load. the controller sends the electric energy of the lithium polymer battery to the load to ensure the continuity and stability of the whole system. The grid-connected inverter system is composed of several inverters, which turns the direct current in the battery into the standard 380V mains and connects to the low-voltage power grid on the user side or sends it to the high-voltage power grid through the boost transformer Lithium battery pack plays two major roles of energy regulation and load balance in the system at the same time. It converts the electric energy output of photovoltaic power generation system into chemical energy and stores it in case of insufficient power supply.

maxworld solar battery

Solar battery can improve the energy storage efficiency of photovoltaic system to 95%

The cost per kilowatt hour of solar battery is about 0.8-0.85 yuan. At present, a major factor restricting the commercial development of energy storage is high cost. With the improvement of technical level, the cost per kilowatt hour of energy storage is decreasing year by year. Lithium iron phosphate batteries can increase the energy storage efficiency of photovoltaic systems to 95%, far more than the traditional lead-acid batteries of 70 to 80%. And with 2,000 charge and discharge service, life lithium iron phosphate batteries are expected to improve the efficiency of solar power generation systems, and help reduce their installation and maintenance costs.


The rapid development of solar photovoltaic power generation system puts forward higher requirements on energy storage system. Solar battery energy storage of high efficiency Life is long good charge and discharge performance characteristics determine. It is very suitable for as a new energy storage with power lithium iron phosphate batteries. Photovoltaic energy storage system energy efficiency is high. It also has a long the charge and discharge service life, a stable operation and good application prospect.

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