What is a lithium-ion battery energy storage system?

Lithium-ion batteries have broad application prospects in the field of energy storage as they have the advantages of:

1. High energy density

2. Long cycle life

3. Low self-discharge rate

4. No memory effect

5. Green environmental protection

At present, lithium-ion battery technology mainly includes:1. lithium cobalt oxide 2.lithium manganate 3.lithium iron phosphate 4.lithium titanate.Lithium iron phosphate batteries are recommended as the first choice in the field of energy storage for the market application prospects and technology maturity.

The development and application of lithium-ion battery technology is hot, also, market demand is in increase.As one of its important applications, battery energy storage systems have emerged, including: 

1.Small household energy storage 

2. Large industrial 

3. Commercial energy storage 

4.Ultra-large energy storage power stations; 

Large-scale energy storage systems are an important part of new energy systems and smart grids, and energy storage batteries are the key to large-scale energy storage systems.Electric energy storage systems are equivalent to batteries. It could present with many ways, such as power systems for power stations, communication base stations for backup power, and data rooms.The backup power technology and power battery technology of the communication base station and data room belong to the DC technology. The content of energy storage technology is more extensive. In addition to DC technology, it also includes: a.converter technology  b. grid access technology  c.grid dispatching control technology.

At present, there is no clear meaning of about electric energy storage. But the energy storage system should have two characteristics:

1.The energy storage system can be used for grid scheduling (or the energy in the energy storage system can be fed back to the main grid)

2.Compared with power lithium batteries, lithium-ion batteries for energy storage have lower performance requirements

At present, generally there is no independent energy storage R&D teams in domestic lithium-ion battery companies. The research and development of energy storage is generally carried out by the power lithium battery team in their spare time.Even if there is an independent energy storage R&D team, it will be smaller than the power team.Compared with power lithium batteries, the technical characteristics of energy storage systems are high voltage (generally designed according to 1Vdc requirements), and the single-cell batteries work through multi-series and parallel.Therefore, the electrical safety and battery status monitoring of the energy storage system are more complicated which require specialized personnel to study and solve.