The application of lithium battery pack for energy storage in home energy storage and commercial energy storage. Lithium battery packs are increasingly used in communication base station energy storage, home energy storage, and commercial and industrial energy storage. As a forward-looking technology to promote the development of new energy industry in the future, the energy storage industry shows great potential for development in different application scenarios such as new energy grid connection, electric vehicles, smart grid, micro grid, distributed energy system, home energy storage system, power supply project in areas without electricity, etc. The market prospect is very broad.
Energy storage system is to store the currently unused or excess electricity through certain specifications of lithium battery pack, and then extract it for use at the peak of use, or transport it to the place where energy is scarce and use it again. The energy storage system covers home energy storage, communication energy storage, grid frequency regulation energy storage, scenery storage micro-grid energy storage, large-scale industrial and commercial distributed energy storage, data center energy storage and new energy field photovoltaic power generation business. In addition, the energy storage system will partially carry the ladder application of part of the vehicle power lithium battery pack in the future.
Energy storage lithium battery pack in the application of home energy storage
Home energy storage battery system is divided into solar home energy storage power, multi-functional home energy storage battery system, high-power energy storage power, portable home energy storage battery, outdoor home energy storage battery, home energy storage power, 12V home energy storage power, 24V home energy storage power, 48V home home energy storage battery. Portable home energy storage lithium battery pack system customization is very flexible, Cunningham Electric portable home energy storage lithium battery manufacturer can customize different voltage according to your needs.
Home energy storage system is currently divided into two types, one for grid-connected home energy storage system and one for off-grid home energy storage system. Home energy storage lithium batteries allow you to obtain safe, reliable and sustainable energy, and ultimately lead to an improved quality of life. Home energy storage products can be installed in both off-grid PV application scenarios and even in homes without PV systems.
Home energy storage lithium battery pack has a service life of more than 10 years, modular design, multiple energy storage units can be more flexible parallel connection, simple, fast, and significantly improve the storage and utilization of energy.
The grid-connected home energy storage system consists of five major components, including: solar cell array, grid-connected inverter, BMS management system, lithium battery pack, and AC load. The system uses a hybrid power supply of PV and energy storage system. When the utility power is normal, the load is powered by the PV grid-connected system and the utility power; when the utility power is off, the load is jointly powered by the energy storage system and the PV grid-connected system.
The off-grid home energy storage system is independent and does not have any electrical connection with the grid, so the whole system does not need a grid-connected inverter, and the PV inverter can meet the requirements. Off-grid home energy storage system is divided into three working modes, mode 1: PV provides energy storage and user electricity (sunny days); mode 2: PV and storage battery provide user electricity (cloudy days); mode 3: storage battery provides user electricity (evening and rainy days).
Application of energy storage lithium battery pack in commercial energy storage
Energy storage technology is closely related to the development of new energy applications and power grids, which can effectively improve energy utilization efficiency and can solve problems such as power supply in remote areas. Therefore, energy storage technology is a key technology that needs to be solved for solar and wind power generation to become the main energy source, and is a key link that cannot be bypassed for the development of new energy. Industry insiders believe that the future of energy storage batteries should be in the wind power and photovoltaic industry, especially in the wind power industry, which has been heavily laid out. As wind power resources are unstable, the application of lithium battery storage technology can help wind farm output smoothing and "peak and valley reduction".
● Microgrid
Small-scale power generation and distribution system consisting of distributed power supply, energy storage device, energy conversion device, load, monitoring and protection device, etc. is the main application of lithium battery pack energy storage system in China. Distributed power generation has the advantages of high energy efficiency, low pollution, high reliability and flexible installation location, but at the same time, it has the shortcomings of high output power fluctuation and complex control. In order to effectively integrate the advantages of distributed power generation, improve the utilization rate of renewable energy and enhance the stability of the power grid, energy storage systems have received wide attention from the energy community.
● New Energy Vehicle Charging Stations
Charging stations use clean energy to supply electricity and store electricity after generating electricity through photovoltaic. Photovoltaic, energy storage and charging facilities form a micro-grid that intelligently interacts with the public grid according to demand and can realize two different modes of operation: on-grid and off-grid. The use of energy storage system can also alleviate the impact on the regional power grid when charging piles are charged with high current. The development of new energy vehicles is inseparable from the construction of charging infrastructure. Setting up supporting energy storage facilities is conducive to improving the quality of local grid electricity and increasing the selectivity of charging station sites.
● Wind power generation system
From the reality of grid operation and the long-term interest of large-scale wind power development, improving the controllability of wind farm output power is an important development direction of wind power generation technology. Introducing wind power generation technology into lithium battery pack energy storage system can effectively suppress wind power fluctuation, smooth output voltage, improve power quality, ensure wind power grid operation, and promote wind energy utilization.
● Communication field
At this stage, most lithium batteries used in the field of communication backup power are lithium iron phosphate battery packs. The backup power based on lithium battery packs can be widely used in scenarios with high requirements on power supply weight, volume, cycle life and multiplier, such as indoor and blind coverage, class II and III utility areas, and short-time power backup. In the era of big data, shared stations, central server room expansion and other scenarios with limited space also gradually require the participation of lithium battery backup power.
In the short term, the energy storage industry is approaching a rapid growth period, which requires not only clear government subsidy policies to encourage power companies to invest in the home and commercial sectors, but also requires energy storage companies to innovate business models to promote product promotion. By 2020, the market penetration rate of lithium battery pack energy storage is expected to be 5%-10%, and the installed capacity of battery energy storage is expected to exceed 5GW, with an average annual compound growth rate of 120%.
