The 2024 Indonesia International Solar Energy Exhibition SOLARTECH INDONESIA will be held at the Jakarta Convention and Exhibition Center in Indonesia from March 6-8.

EITAI will make a grand appearance with energy storage battery household solutions and industrial and commercial solutions to help Southeast Asia’s green energy industry flourish. Booth number A3O4-01/A3O4-03, welcome new and old customers to visit!

Booth Guidance

Intersolar Europe 2024 , held from June 19 to 21 at the New Munich International Exhibition Center in Germany, brought together industry leaders, innovators, and professionals in the solar energy sector. Our company was proud to be part of this vibrant event, showcasing our latest products, technologies, and solutions.

Key Highlights

1. Cutting-Edge Products: Our booth attracted a diverse audience, where we unveiled our innovative solar products and research developments. From advanced photovoltaic panels to energy storage solutions, we demonstrated our commitment to sustainable energy.

2. Global Networking: We engaged with exhibitors and experts from around the world, fostering valuable connections. These interactions allowed us to gain insights into market trends, emerging technologies, and best practices.

Conclusion

Intersolar Europe 2024 was an enriching experience, reinforcing our dedication to solar innovation. As we look ahead, we eagerly anticipate next year's event, where we'll continue driving the future of solar technology.

Batteries are one of the most important parts of energy storage systems. With the reduction of battery costs and the improvement of battery energy density, safety and lifespan, energy storage has also ushered in large-scale applications. This article will help you understand the advantages of energy storage batteries. several important parameters.

1.Battery capacity

Battery capacity is one of the important performance indicators for measuring battery performance. The capacity of a battery is divided into rated capacity and actual capacity. Under certain conditions (discharge rate, temperature, termination voltage, etc.), the amount of electricity released by the battery is called rated capacity (or Nominal capacity). Common units of capacity are mAh and Ah, 1Ah=1000mAh. Taking a 48V, 200Ah battery as an example, the battery capacity is 48V×200Ah=9600Wh, which is 9.6 kilowatt hours.

2. Battery discharge C rate

C is used to indicate the battery charge and discharge capacity rate. Charge and discharge rate = charge and discharge current/rated capacity. For example: when a battery with a rated capacity of 100Ah is discharged at 50A, its discharge rate is 0.5C. 1C, 2C, and 0.5C are battery discharge rates, which are a measure of discharge speed. If the used capacity is discharged in 1 hour, it is called 1C discharge; if it is discharged in 2 hours, it is called 1/2=0.5C discharge. Generally, the capacity of the battery can be detected through different discharge currents. For a 24Ah battery, the 1C discharge current is 24A and the 0.5C discharge current is 12A. The larger the discharge current. The discharge time is also shorter.

3. DOD (Depth of Discharge)

Depth of Discharge (DOD) is used to measure the percentage between battery discharge and battery rated capacity. For the same battery, the set DOD depth is inversely proportional to the battery cycle life. The deeper the discharge depth, the shorter the battery cycle life. Therefore, it is important to balance the required runtime of the battery with the need to extend battery cycle life.

If the SOC change of the battery from completely empty to fully charged is recorded as 0~100%, then in practical applications, it is best to make each battery work in the range of 10%~90%, and it is possible to operate below 10%. It will be over-discharged and some irreversible chemical reactions will occur, which will affect the battery life.

4. SOH (State of Health)

SOH (State of Health) indicates the current battery's ability to store electrical energy relative to a new battery. It refers to the ratio of the current battery's full-charge energy to the new battery's full-charge energy. The current definition of SOH is mainly reflected in several aspects such as capacity, electricity, internal resistance, cycle times and peak power. Energy and capacity are the most widely used.

Generally, when the battery capacity (SOH) drops to about 70% to 80%, it can be considered to have reached EOL (end of battery life). SOH is an indicator that describes the current health status of the battery, while EOL indicates that the battery has reached the end of life. Needs to be replaced. By monitoring the SOH value, the time for the battery to reach EOL can be predicted and corresponding maintenance and management can be performed.

Solar photovoltaic energy storage system: 

Simply put, it refers to the use of photovoltaic panels to convert solar energy into direct current, and then use LiFePO4 batteries to store the direct current, and then the lithium batteries supply household alternating current through inverters.With the current global environmental impact and the country's call, photovoltaic energy storage systems have become the mainstream in the new energy industry.

Home photovoltaic energy storage systems are very suitable for installation and use in villas, self-built houses in the suburbs, and single-family shops.It can not only provide power for all the electrical appliances needed in daily life, but also avoid the adverse effects caused by power outages and save electricity bills.Electricity rationing is implemented in the region. When the temperature exceeds 40℃, the air conditioner stops running, making the home extremely hot. There are power outages every now and then, posing problems to residents' basic daily life.In some areas, in winter, the main source of heating is electrical appliances. Once there are power cuts and other problems, a room full of elderly and children will be shivering in the cold air, but there is nothing they can do.Although the home photovoltaic energy storage system cannot completely replace the power station, it can solve the user's power problem in a short period of time. If it is connected to the grid, we can store electricity during the low period of electricity consumption and use it during the peak period of electricity consumption.

So how should we choose a home solar PV energy storage system?

First of all, we should consider the safety of solar photovoltaic energy storage systems.The energy storage battery commonly used in household energy storage systems is lithium iron phosphate battery. Generally, energy storage systems adopt modular and integrated integrated design and have intelligent management systems; constant voltage output technology can effectively prevent safety hazards such as damage to household appliances and short circuits caused by grid voltage fluctuations.

Secondly, we should consider the power and loss of photovoltaic energy storage batteries.According to the functions of household appliances and the daily electricity consumption of the family, the basic requirements of the home storage system are that the energy storage system function can reach more than 5kw and the daily power generation can reach more than 10kwh.In this way, it can be charged during the day and the energy storage system can be used to generate electricity at night to meet household power needs and achieve high power and low loss.

Finally, easy installation will not damage the structure of the house.Many high-end villa users attach great importance to service experience. Some solar photovoltaic energy storage systems currently on the market are very troublesome to install due to various reasons. Therefore, it is best to let professionals install and customize them, so that the installation will not cause any damage to the house. After installation, it looks beautiful and blends perfectly with the house.