Household energy storage is also called home energy storage, which is an important part of distributed energy (DER). Distributed energy supply can realize the cost of transmission and distribution, achieve lower cost, and improve the quality of electricity and energy efficiency.

For families, the cost of electricity consumption can be reduced by increasing the proportion of spontaneous use and participation in assistance services. At the same time, when facing factors such as major disasters, the middle -end power of the power grid is used as an emergency backup power supply to enhance the reliability of the family power supply; for the power grid, for the power grid The proportion of VRE (volatility can renewable energy) is rapidly increasing, and the difference between the power generation curve and the power consumption curve will be further increased. Configuring energy storage can transfer power to time to auxiliary power grids to balance power generation capacity and power consumption needs.

1. The composition of the residential enricy storage system

The households are composed of the battery, BMS, EMS (energy management system), energy storage bidirectional variables, and other supporting systems. The battery is the core component.

The energy storage of households adopts the design idea of integrated microcontrollers, which can run away from the network and grid -connected mode, and can be seamlessly switched to the operating mode, which greatly improves power supply reliability. In addition, the flexible and efficient management system of the energy storage configuration can be adjusted according to the power grid, load, energy storage and electricity prices, to achieve system operation optimization and maximizing user income.

Second, the technical route of energy storage for households

The mainstream technology route for households is lithium iron phosphate, and sodium ions and lithium manganese iron are new paths in the future.

Energy storage battery technology routes include lithium ions, lead storage batteries, liquid flow batteries, etc. At present, due to the characteristics of high safety, long cycle life and other characteristics, lithium -phosphate batteries are more in line with the design demand of energy storage batteries compared to the three -yuan lithium battery. It is the mainstream development route of energy storage batteries, and Tesla energy storage batteries have gradually shifted from Sanyuan route to iron lithium route. In addition, some companies such as Ningde and Paineng are already developing and testing and testing of sodium ions and manganese -iron lithium batteries. It is expected that the technical route of energy storage batteries in the future is expected to be further improved.