What is energy storage system

New energy power stations and photovoltaic systems need to be equipped with energy storage of relevant proportions. At the same time, the ratio of peak to valley electricity price difference is increased, so there is a certain opportunity for the development of energy storage at the user side. In order to understand the energy storage related industry chain, here is a science popularization of energy storage related knowledge points for novices.

Explanation of professional terms

EMS: Energy Management System

PCS: energy storage converter

BMS: Battery Management System

LFP: lithium iron phosphate

Energy storage application scenario

1.Power generation side

Location: beside centralized new energy power station

Function: 1) reduce abandonment; 2) Stabilize fluctuation

2.Grid side

Location: independently constructed or located next to the traditional power station

Functions: 1) FM; 2) Peak shaving

3.Power side

Location: home, factory, office building, communication base station backup power supply, data center backup power supply

Functions: 1) Self use; 2) Peak cutting and valley filling

solar lithium battery pack
solar lithium battery
Solar lithium batteries
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Lithium battery energy storage system

Considering the cost performance and safety, lithium batteries are widely used in the market for energy storage. Now let’s understand the composition of the lithium battery energy storage system.

1.Battery pack: It is composed of multiple battery modules (multiple cells in series and parallel and fixed devices), accounting for about 60% of the cost of the energy storage system

2.BMS: responsible for battery inspection, evaluation, protection and equalization

3.PCS: control the charging and discharging process of the battery pack, and conduct AC/DC conversion

4.EMS: responsible for data acquisition, network monitoring, energy scheduling, etc

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