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.

Recently, floods have hit Hpakant and Myitkyina in Myanmar, which has had a serious impact on the lives of local people. Houses in many areas have been flooded, farmland has been destroyed, and a large number of people have been trapped.

On July 5, 2024, Eitai extended a helping hand to the people in the disaster-stricken areas of Myanmar, showed love, actively donated 6 million Myanmar Kyats.

We hope that through our joint efforts, the people in the disaster-stricken areas of Myanmar can overcome the disaster and rebuild their homes.

1. Regular charging method

Solar energy storage batteries can be charged using a charger, and the charging time is usually 8-10 hours.It should be noted that the charger can only use special solar chargers and cannot use ordinary chargers, otherwise the battery may be damaged.

2. Solar charging method

The most suitable charging method for solar energy storage batteries is solar charging.When there is sufficient sunlight, the solar panel can directly convert sunlight into electrical energy to charge the battery.It should be noted that the solar charging method requires stable and sufficient sunlight to charge normally, otherwise it may affect the charging effect.

3. Precautions

1. When using a charger for charging, it is necessary to pay attention to whether the model and voltage of the charger and battery match, otherwise it may cause overcharging or undercharging problems.

2. When using solar charging, you need to pay attention to whether the battery is placed in a stable position to ensure sufficient light. You also need to be careful not to expose the battery to high or low temperatures for a long time.

3. Check the battery charging status regularly to ensure that the battery is within the appropriate power range, and do not overcharge or over-discharge the battery.

In short, the correct charging method and precautions for solar energy storage batteries are very important for extending battery life and improving battery efficiency.

I hope this article can provide some reference for users who use solar energy storage batteries.

The battery system is the core of the entire energy storage system, which is composed of hundreds or thousands of single cells connected in series and parallel.Battery inconsistency mainly refers to the inconsistency of parameters such as battery capacity, internal resistance, and temperature.When inconsistent batteries are used in series and parallel, the following problems will occur:

1) Loss of available capacity

In the energy storage system, single cells are connected in series and parallel to form a battery box, and battery boxes are connected in series and parallel to form a battery cluster. Multiple battery clusters are directly connected in parallel to the same DC busbar.The reasons for the loss of available capacity due to battery inconsistency include inconsistent series connection and inconsistent parallel connection.

· Battery series inconsistency loss

According to the barrel principle, the series capacity of the battery system depends on the single cell with the smallest capacity.Due to inconsistencies such as differences in the individual cells themselves and temperature differences, the available capacity of each individual cell is different. Cells with small capacity are filled first when charging and empty first when discharging, which restricts the charging capacity of other individual cells in the battery system. The discharge capacity causes the available capacity of the battery system to decrease.Without effective balancing management, as the operating time increases, the attenuation and differentiation of the single cell capacity will increase, further accelerating the decrease in the available capacity of the battery system.

· Inconsistency loss of battery cluster parallel connection

When battery clusters are directly connected in parallel, a circulation phenomenon will occur after charging and discharging. The voltages of each battery cluster are forced to be balanced. When the battery cluster with smaller internal resistance is fully charged or discharged, other battery clusters must stop charging and discharging, causing inter-battery cluster charging. Dissatisfaction and inability to discharge the battery will cause battery capacity loss and temperature rise, accelerate battery decay, and reduce the available capacity of the battery system.In addition, due to the small internal resistance of the battery, even if the voltage difference between clusters due to inconsistency is only a few volts, the uneven current flow between clusters will be very large. As shown in the measured data of a power station in the table below, the difference in charging current reaches 75A ( The deviation reaches 42% compared with the theoretical average value), and the deviation current will cause overcharge and overdischarge in some battery clusters; it will greatly affect the charge and discharge efficiency, battery life, and even lead to serious safety accidents.

2) Temperature inconsistency causes accelerated differentiation of single cells and shortened lifespan

Temperature is the most critical factor affecting the life of energy storage. When the internal temperature of the energy storage system rises by 15°C, the system life will be shortened by more than half.Lithium batteries generate a lot of heat during the charging and discharging process. Excessive temperature differences in single cells will cause further increases in internal resistance, capacity, etc., leading to accelerated differentiation of single cells, shortening the cycle life of the battery system, and even causing safety hazards.

How to deal with energy storage battery inconsistencies?

Battery inconsistency is the root cause of many problems in current energy storage systems. Although battery inconsistency is difficult to eradicate due to the chemical characteristics of the battery and the influence of the application environment, it is possible to integrate digital technology, power electronics technology and energy storage technology, and use the controllability of power electronics technology to minimize the impact of lithium battery inconsistency, which can greatly increase the available capacity of the energy storage system and improve system safety.

1) Eitai active equalization technology monitors the voltage and temperature of each single cell in real time to eliminate the inconsistency problem of battery series connection and increase the available capacity of the energy storage system by more than 20% throughout its life cycle.

2) In the electrical design of the Eitai energy storage system, each battery cluster is managed individually for charging and discharging, and the battery clusters are not connected in parallel, which avoids the circulation problem caused by DC parallel connection and effectively improves the available capacity of the system.

3) Accurate temperature control to extend the life of the energy storage system

The temperature of each single cell is collected and monitored in real time.Through three-level CFD thermal simulation and a large amount of experimental data, the thermal design of the battery system is optimized to make the maximum temperature difference of the single cells in the battery system less than 5°C, solving the problem of single cell differentiation caused by inconsistent temperature.

With the development of renewable energy technology and the enhancement of environmental awareness, home energy management systems have gradually become an important part of modern life.As an efficient and convenient energy storage solution, wall-mounted energy storage lithium batteries can effectively store and manage household power resources, improve energy utilization efficiency, and reduce electricity costs.This article will introduce in detail the working principle, main functions, application scenarios, advantages of wall-mounted energy storage lithium batteries and their important role in home energy management.

Ⅰ. Overview of Wall-mounted Energy Storage Lithium Battery

Wall-mounted energy storage lithium battery is an energy storage device installed on the wall. It uses lithium-ion batteries as the energy storage medium and has the advantages of high energy density, long life, light weight and easy installation.This equipment can be combined with renewable energy equipment such as solar photovoltaic systems and wind power generation systems to realize the storage and management of household power and provide users with stable and reliable power supply.

Ⅱ. Working Principle

The working principle of the wall-mounted energy storage lithium battery is based on the charging and discharging process of the lithium-ion battery. Its basic working process is as follows:

1. Charging process:

When the power generated by the home photovoltaic system or wind power generation system exceeds the household electricity demand, the excess power will be converted into direct current through the inverter and stored in the lithium battery.

The lithium ions inside the energy storage battery move from the positive electrode to the negative electrode and are stored in the negative electrode material to complete the charging process.

2. Discharging process:

When the household electricity demand increases or the photovoltaic or wind power generation is insufficient, the energy storage battery begins to discharge, and the stored direct current is converted into alternating current through the inverter to supply household electricity.

The lithium ions inside the energy storage battery move from the negative electrode back to the positive electrode, releasing electrical energy to complete the discharge process.

3. Intelligent management system:

The energy storage system is equipped with an intelligent management system (BMS), which monitors the battery's voltage, current, temperature and other parameters in real time, optimizes the charging and discharging process, and ensures the safety and efficient operation of the battery.

Ⅲ. Main functions

1. Power storage and allocation:

Energy storage batteries can efficiently store excess power, release power during peak power demand periods, and balance household power supply.

2. Emergency backup power supply:

The intelligent management system can automatically adjust the charging and discharging strategy according to the electricity price and power demand, optimize power use, and reduce electricity costs.

3. Energy management and optimization:

The intelligent management system can automatically adjust the charging and discharging strategy according to the electricity price and power demand, optimize power use, and reduce electricity costs.

4. Environmental protection and sustainable development:

Energy storage batteries can effectively utilize renewable energy, reduce dependence on fossil energy, reduce carbon emissions, and promote environmental protection and sustainable development.

5. Remote monitoring and control:

Users can remotely monitor and control the operating status of the energy storage system through mobile phone APP or computer, view power, voltage, temperature and other information in real time, and conduct intelligent management.

IV. Application scenarios

1. Home photovoltaic system:

Used in conjunction with the home photovoltaic system, the excess solar power during the day is stored and used at night or on cloudy days to improve the utilization efficiency of photovoltaic power generation.

2. Home wind power generation system:

Used in conjunction with the home wind power generation system, the power generated by wind power is stored to balance the volatility of wind power generation and ensure a stable power supply.

3. Grid peak shaving and peak filling:

Charging during the low electricity price period (such as at night) and discharging during the peak electricity price period (such as during the day) to reduce electricity bills and optimize electricity use.

4. Emergency backup power supply:

As an emergency backup power supply for the family, it provides power guarantee in the event of a power outage or natural disaster, and improves the safety and reliability of household electricity use.

5. Smart home system:

Integrated with the smart home system to achieve intelligent management and optimization of household electricity, improve living experience and energy efficiency.

Ⅴ. System advantages

1. High energy density and long life:

Lithium batteries have high energy density and long life, and can provide a long-lasting and stable power supply.

2. Lightweight and easy to install:

The wall-mounted design makes the energy storage battery easy to install, does not occupy ground space, and is suitable for various home environments.

3. Intelligent management and optimization:

The advanced intelligent management system can monitor and optimize the charging and discharging process in real time, improve the safety and efficiency of the battery.

4. Environmental protection and sustainable development:

Effectively utilize renewable energy, reduce carbon emissions, promote environmental protection and sustainable development, and conform to the modern green life concept.

5. Flexibility and scalability:

The energy storage system has good flexibility and scalability, and can expand capacity and upgrade functions according to household electricity demand.

VI. Implementation Suggestions

1. Reasonable selection and configuration:

According to the household electricity demand and renewable energy generation, select the appropriate energy storage battery capacity and configuration to ensure the efficient operation of the system.

2. Professional installation and commissioning:

Select a professional installation service provider for installation and commissioning to ensure the safety and reliability of the equipment and avoid failures and risks caused by improper installation.

3. Regular maintenance and care:

Regularly maintain and care for energy storage batteries to maintain battery performance and life and ensure long-term stable operation of the system.

4. Intelligent management and monitoring:

Use intelligent management systems for real-time monitoring and management, optimize charging and discharging strategies, and improve battery efficiency and economic benefits.

5. Policy support and subsidies:

Pay attention to relevant government policies and subsidies, make full use of policy support, reduce investment costs, and improve the economy and feasibility of projects.

VII. Future Development Trends

With the continuous advancement of science and technology and the growth of market demand, wall-mounted energy storage lithium batteries are also constantly developing and innovating.Future development trends mainly include the following aspects:

1. Intelligence and automation:

The energy storage system will be more intelligent and automated, with self-diagnosis, self-repair and automatic optimization functions to improve the reliability and service life of the system.

2. Integration and modularization:

The energy storage system will be more integrated and modular, easy to install and maintain, and meet the diverse needs of different families.

3. Big data and artificial intelligence:

The energy storage system will be combined with big data and artificial intelligence technology to achieve more accurate energy management and prediction, and improve the efficiency and economic benefits of the system.

4. Multi-energy interconnection and coordination:

The energy storage system will be interconnected and coordinated with multiple energy systems such as solar energy, wind energy, and power grids to achieve comprehensive energy management and optimization and improve energy utilization efficiency.

5. Green environmental protection and sustainable development:

The energy storage system will pay more attention to green environmental protection and sustainable development, adopt more environmentally friendly materials and processes, reduce the impact on the environment, and promote the popularization of green lifestyles.

Conclusion

As an efficient and convenient energy storage solution, wall-mounted lithium energy storage batteries have the advantages of high energy density, long life, intelligent management, and environmental protection. They are widely used in home photovoltaic systems, wind power generation systems, power grid peak regulation, emergency backup power supplies, smart home systems and other fields.In the future development, energy storage systems will continue to progress in the direction of intelligence, integration, modularization, big data and artificial intelligence, multi-energy interconnection and coordination, green environmental protection and sustainable development.By reasonably selecting and using wall-mounted lithium energy storage batteries, we can better manage and utilize household power resources, improve energy utilization efficiency, reduce electricity costs, promote environmental protection and sustainable development, and create a more intelligent and green modern family life.

With the popularity of renewable energy, solar energy storage batteries are becoming more and more important in home, commercial and industrial applications.A reliable solar energy storage battery manufacturer can not only provide high-quality products, but also provide excellent after-sales service and technical support.This article will provide you with a detailed guide to choosing a solar energy storage battery manufacturer to help you make an informed decision.

Key factors for choosing solar energy storage battery manufacturers

1. Product quality

High-quality products are the primary consideration when choosing a manufacturer.Here are a few aspects of evaluating product quality:

Battery life: Battery life is an important indicator of energy storage batteries. A high-quality battery should have a long service life and a low decay rate.

Conversion efficiency: High-efficiency energy conversion can maximize the utilization of solar energy and reduce energy loss.

Safety: Make sure the battery has passed relevant safety certifications, such as UL (USA), CE (Europe), etc., to prevent safety hazards such as overheating and short circuit.

2. Technological innovation

Technological innovation is the embodiment of corporate competitiveness.Choosing a manufacturer with technological innovation capabilities can ensure that you get the latest and most advanced products.

Battery technology: such as lithium-ion batteries, lithium iron phosphate batteries, etc., choose manufacturers with the latest battery technology.

Intelligent management system: Advanced energy management system can optimize the operation of energy storage batteries, improve efficiency and life.

Remote monitoring and control: Remote monitoring and control via smartphone or computer to improve convenience of use.

3. Reliability and durability

Reliability and durability are the guarantee for the long-term operation of energy storage batteries.The following are several aspects for evaluating reliability and durability:

Environmental adaptability: The battery should be able to operate stably under various climatic conditions, such as high temperature, low temperature, high humidity and other environments.

Structural design: The battery structure should be strong and durable, and able to resist external shock and vibration.

4. After-sales service and technical support

High-quality after-sales service and technical support are important considerations in choosing a manufacturer.

Warranty period: Understand the manufacturer's warranty policy and choose a manufacturer with a longer warranty period.

Technical support: Ensure that the manufacturer provides 24/7 technical support to respond and resolve issues quickly.

Maintenance service: Choose a manufacturer that provides regular maintenance services to ensure long-term and stable operation of the battery.

5. Brand credibility and word-of-mouth

Brand reputation and word of mouth are important references for evaluating manufacturers.

Market share: Choose brands with high market share and good user feedback.

Customer reviews: Learn about other users'reviews of the manufacturer through online platforms, industry forums and other channels.

Successful cases: Understand the manufacturer's successful cases and partners, and evaluate their performance in similar projects.

6. Cost-effectiveness

Cost-effectiveness is an important factor in selecting a manufacturer.

Initial investment: Evaluate the initial investment cost of the battery and choose a product with high cost performance.

Running costs: Understand the running and maintenance costs of your battery and choose products with lower long-term running costs.

Payback period: Calculate the investment return period and choose products with a shorter return period.

Summarize

Choosing a suitable solar energy storage battery manufacturer requires comprehensive consideration of product quality, technological innovation, reliability and durability, after-sales service and technical support, brand reputation and word of mouth, and cost-effectiveness.Through careful evaluation and comparison, you can find the manufacturer that best suits your needs, ensuring you get high-quality, high-performance solar energy storage equipment to maximize energy utilization and optimize economic benefits.

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.

Hello everyone,

At EITAI, we have always upheld the philosophy of developing together with our clients. Recently, we had the honor of welcoming three representatives from key clients for an in-depth visit and exchange. This on-site visit not only strengthened our mutual understanding but also laid a solid foundation for future cooperation.

During this visit, our client representatives conducted a detailed examination of our production processes and quality control systems. We showcased our latest production facilities and advanced technological applications, striving to maintain high standards and efficiency in every aspect. Through this on-site inspection, the clients gained a more intuitive understanding of our factory operations and expressed high recognition of our product quality and services.

Furthermore, both parties engaged in in-depth discussions regarding future cooperation directions. We jointly analyzed market trends, discussed potential business opportunities, and established a preliminary framework for collaboration. Client feedback is extremely important to us, as it not only helps us better understand market demands but also promotes product improvement and innovation.
The clients also provided many valuable suggestions during the visit. This feedback will help us further optimize our production processes and enhance service quality. We take these suggestions very seriously and plan to implement them in our future work to better meet our clients' needs.

In our discussions, we learned about the clients’ needs for technical support, product customization, and delivery timelines. These requirements will guide us in providing more personalized and flexible solutions in our future collaborations. EITAI is committed to forming close partnerships with our clients to create maximum value for them.

Overall, this visit has paved the way for our cooperation. We look forward to moving forward together with our clients to face future challenges and opportunities. We appreciate the trust and support from our clients, which enables us to continue progressing on our journey.

Sharing our story with you,

The EITAI Team