Energy storage lithium battery packs are used in household and commercial energy storage. They are increasingly used in communication base-station energy storage, home energy storage, and commercial and industrial energy storage. As a key part of the new energy industry, energy storage has significant potential across applications including renewable-energy grid connection, electric vehicles, smart grids, microgrids, distributed energy systems, home energy storage systems, and power-supply projects in off-grid areas.
The energy storage system uses lithium battery packs with selected specifications to store unused or excess electrical energy, which can be extracted and used during peak usage, or transported to energy-scarce areas for reuse. The energy storage system covers household energy storage, communication energy storage, grid frequency modulation energy storage, wind and solar energy storage, microgrid energy storage, large-scale industrial and commercial distributed energy storage, data center energy storage, and photovoltaic power generation business in the new energy field. In addition, energy storage systems will also support cascade applications for some in-vehicle power lithium battery packs in the future.
Lithium Battery Packs for Household Energy Storage
Household battery systems include solar-powered, multifunctional, high-power, portable, and outdoor configurations, as well as 12 V, 24 V, and 48 V power supplies. Manufacturers can customize portable household lithium battery systems to meet different voltage requirements.
There are currently two main types of home energy storage systems: grid-connected systems and off-grid systems. Home energy storage lithium battery packs can provide safe, reliable, and sustainable energy. Home energy storage products can be installed in photovoltaic off-grid applications and in households without photovoltaic systems.
The home energy storage lithium battery pack has a lifespan of over 10 years, with a modular design and multiple energy storage units that can be flexibly connected in parallel. It is simple, fast, and significantly improves energy storage and utilization.
The grid-connected home energy storage system consists of five major components: a solar-cell array, a grid-connected inverter, a BMS, a lithium battery pack, and an AC load. The system combines photovoltaic generation with energy storage. When mains power is available, the load is supplied by the photovoltaic grid-connected system and the mains; when mains power is cut off, it is supplied jointly by the energy storage system and the photovoltaic grid-connected system.
The off-grid home energy storage system is independent and has no electrical connection to the power grid. It does not require a grid-connected inverter, and the photovoltaic inverter can meet system requirements. The off-grid home energy storage system has three working modes: Mode 1: photovoltaic generation supports energy storage and electricity consumption on sunny days; Mode 2: photovoltaic generation and energy storage batteries supply electricity on cloudy days; Mode 3: energy storage batteries supply electricity in the evening and on rainy days.
Lithium Battery Packs for Commercial Energy Storage
Energy storage technology is closely linked to the application of new energy and the development of power grids, which can effectively improve energy utilization efficiency and solve problems such as power supply in remote areas. Therefore, energy storage technology is a key technology that needs to be addressed when solar and wind power generation become the main energy sources, and it is a crucial link that cannot be avoided in the development of new energy. Industry insiders believe that the future of energy storage batteries should lie in the wind and photovoltaic industries, with the wind power industry, which has already been heavily deployed, as the main focus. Due to the instability of wind resources, the application of lithium-ion battery pack energy storage technology can help wind farms achieve smooth output and “peak shaving and valley filling”.
● Microgrid
A small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, loads, monitoring and protection devices, etc., is currently the main application of energy storage lithium battery pack systems in China. Distributed power generation has advantages such as high energy efficiency, low pollution, high reliability, and flexible installation locations, but at the same time, it also has shortcomings such as strong output power fluctuations 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 widespread attention in the energy industry.
● New energy vehicle charging station
The charging station uses clean energy for power supply, and stores electricity through photovoltaic power generation. Photovoltaic, energy storage, and charging facilities form a microgrid that intelligently interacts with the public grid according to demand, and can achieve two different operating modes: grid-connected and off-grid. The use of energy storage systems can also alleviate the impact of charging piles with high-current charging on the regional power grid. The development of new energy vehicles cannot be separated from the construction of charging infrastructure. Setting up supporting energy storage facilities is conducive to improving the quality of local power grid energy and allowing greater flexibility in the location of charging stations.
● Wind power generation system
Considering the reality of grid operation and the long-term benefits of large-scale development of wind power, improving the controllability of wind farm output power is currently an important development direction of wind power generation technology. Introducing wind power generation technology into lithium battery pack energy storage systems can effectively suppress wind power fluctuations, smooth output voltage, improve power quality, ensure grid-connected operation of wind power generation, and promote wind energy utilization.
● Communication field
At present, most of the lithium batteries used in the field of communication backup power supply are lithium iron phosphate battery packs. Based on lithium battery packs, backup power supplies can be widely used in indoor and blind area coverage, Class II and III urban power areas, short-term backup power, and other scenarios with demanding requirements for power weight, volume, cycle life, and rate capability. As demand for data infrastructure grows, lithium battery backup power is increasingly needed in space-constrained settings such as shared stations and central computer-room expansions.