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How far is lithium-ion battery as the "group pet" of energy storage project? As an emerging field, lithium-ion battery energy storage has developed rapidly around the world in recent years. At present, there are three important applications in the energy storage lithium-ion battery market: electric energy storage, household energy storage and base station energy storage. So how far is lithium-ion battery as the "group pet" of energy storage project? The editor of this article will discuss with you.

Lithium ion battery energy storage projects are mainly distributed in the following directions

1. Li-ion battery energy storage is used for new energy power generation. Its important purposes are: a. smooth and unstable output of wind farm or photovoltaic power station; B. Track planned power generation; C. As a peak power station, participate in peak shaving operation;

2. Power auxiliary service energy storage power station, whose important purpose is to stabilize the operation of the power grid and ensure the safety of the power grid, its functions include peak-shaving, frequency regulation and voltage regulation of the power grid, replacing some peak-shaving power plants, frequency modulation units, rotating backup, emergency backup, etc;

3. Microgrid energy storage. In the microgrid, lithium-ion battery energy storage system plays an important role (such as v-f support, power supply maintenance time, frequency and voltage regulation, etc.);

4. User-side energy storage, its important uses are user-side peak shaving and valley filling, demand-side response, capacity management, etc;

5. Energy storage power supply for special occasions, airports, docks, special, important facilities, special bases, etc., used to ensure equipment safety/company safety/regional safety/national safety;

6. Household energy storage system is mainly used for roof photovoltaic self-use and power failure emergency.

How far is lithium-ion battery as the "group pet" of distributed energy storage project?

Since 2019, the lithium battery energy storage market has developed rapidly, and many energy storage projects at home and abroad have been invited for public bidding or put into operation. The application scenarios include energy storage power stations, wind farm frequency modulation, solar power generation storage, user side, communication base stations, etc., attracting a large number of battery companies to enter the market.

In this case, battery companies including Ningde Times, BYD, Guoxuan Hi-Tech, Yiwei Lithium Energy, Ruipu Energy, Haisida, Xinwanda, Tesla, LG Chemical, Samsung SDI and other battery companies are all carrying out the layout and planning of the energy storage industry chain, winning the bid or building a number of large energy storage projects, which has become the company's new performance rising point.

No matter what form of energy storage is used in the power grid (power generation, transmission, distribution and utilization), it is an effective means to improve the reliability and toughness of the power grid. With the rapid expansion of the lithium ion battery industry and the rapid decline of its price, the application of lithium ion battery as a distributed energy storage system is gradually increasing. By the end of 2018, the cumulative scale of electrochemical energy storage projects that have been put into operation in China is 1072.7MW, of which lithium ion battery energy storage projects account for about 60%.

In terms of the currently available energy storage components, lithium-ion battery is a relatively suitable choice, especially for the energy storage on the user side. The advantages of lithium-ion battery as an energy storage component such as high energy density and long life are gradually emerging. However, at present, the application of lithium-ion battery energy storage on the user side is rising slowly, and the economy, safety and applicability of the energy storage system itself need to be broken through.

At present, the safety of lithium-ion battery energy storage is more concentrated on the lithium-ion battery itself, but the energy storage system is not only lithium-ion battery, but also other system equipment, protection equipment, etc., and its safety issues are also worthy of attention.

As a new application mode, lithium-ion battery energy storage has been widely recognized for its efficiency and energy advantages. However, the research on the application of lithium-ion battery in user-side energy storage engineering is still insufficient, and the support of relevant standards and specifications needs to be supplemented, and further research should be done on its attribute meaning, economic benefits, system design and construction and operation guidance.

In the future, with the further improvement of battery technology and the continuous decline of battery cost, the market penetration of lithium-ion battery in the field of energy storage will gradually increase, further promoting the scale of lithium-ion battery energy storage market and providing new opportunities for lithium-ion battery companies.

Summary: Although the future potential of the lithium-ion battery energy storage market is foreseeable, the lithium-ion battery energy storage has not been widely applied and is still in the incubation period, and its volume and growth rate are still relatively small due to the limited energy storage policy, lithium-ion battery price, electricity and other factors. It is mainly used for communication base stations, user-side peak shaving and valley filling, off-grid power stations, micro-grid, rail transit, UPS, etc., and some are also exported to Europe, Australia and other markets, and is mainly used for household energy storage, power grid energy storage and other projects.

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