Views: 1 Author: Site Editor Publish Time: 2024-04-01 Origin: Site
Home energy storage equipment stores electrical energy and uses it when needed - also known as electrical energy storage products or "battery energy storage systems" (BESS), hereafter referred to as home storage. The core component of home storage is rechargeable batteries, usually lithium-ion batteries or lead-acid batteries. The other components are the inverter and the control system that can intelligently control charging and discharging.
As energy storage enters ordinary households, we can realize the concept of distributed power generation, ease the pressure on power grid transmission, and reduce the use of fossil fuels. This is a necessary decentralization measure to achieve carbon neutrality or zero neutrality.
In household energy storage systems, the main components are components, energy storage machines, and batteries; the form shown above is to set up energy storage in the garage for use by our electric vehicles.
Recommended system configuration:
Single-phase energy storage system: 5kW+10kWh;
Three-phase energy storage system: 10kW+10~20kWh.
Energy storage systems are divided into single-phase and three-phase. The picture below is a simple energy storage system diagram. In addition to the three major components, it also includes electric meters, household loads, etc. There are corresponding solutions for both single-phase and three-phase.
ES/ET energy storage machines all have two-way energy storage, support off-grid integration, UPS function, mobile APP control, and can realize backflow prevention and power limitation.
But there are differences between ES and ET. ES is a single-phase bidirectional energy storage inverter, while ET is for three-phase power grids; and it supports unbalanced three-phase output and single-phase load;
In addition, ES is connected to a low-voltage battery, and ET has a higher voltage range and is connected to a high-voltage battery; their charge and discharge currents are also different. This will also be reflected on the inverter interface.
Since the charging and discharging current of ES can reach 100A, the corresponding battery interface is also larger and requires a 25-square-meter cable. The charging and discharging current of ET is only 25A, and a 6-square-meter cable is enough.
So the biggest feature of these two machines is that they are off-grid and integrated. In addition, they also have the function of UPS. If the grid suddenly loses power, the inverter will automatically switch to battery power, and the off-grid switching time is less than 10ms, UPS level response time , is an uninterruptible power supply; while the energy storage inverter of many inverter manufacturers is EPS, which is an emergency power supply, and the switching time is less than 5 seconds.
It is recommended that everyone use lithium batteries for batteries. They are currently compatible with many battery brands. We recommend a manufacturer that focuses on energy storage batteries: Pronewenergy brand. As an energy storage battery manufacturer, Pronewenergy has focused on energy storage batteries for 10+ years and provides house energy storage batteries. , communication base station batteries, golf power batteries, yacht power battery customization services. Before customers purchase a machine, you must first confirm whether they are using a compatible battery brand.
Lithium batteries are batteries made of lithium metal or lithium alloy as the negative electrode material and use non-aqueous electrolyte solution. They have many advantages such as high energy, long service life and light weight. They are widely used in energy storage power systems such as hydraulic, thermal, wind and solar power stations. .
Lithium iron phosphate (LifePo4) battery;
Ternary lithium battery (NCM/NCA) battery;
Lithium cobalt oxide (LCO) battery;
Other lithium batteries, such as lithium manganate, lithium titanate batteries, etc.
