Energy storage lithium-ion batteries, as an emerging application scenario,
are gradually receiving attention. Energy storage is one of the important means
to solve the intermittent fluctuations of new energy wind and photovoltaic power
and achieve the function of "peak shaving and valley smoothing". In the
practical application of lithium battery energy storage in power storage in
China, renewable energy grid connection, user side, grid side, and auxiliary
services are the four most important areas.
1. Energy storage emergency power supply vehicle
The energy storage emergency power supply vehicle consists of a lithium-ion
battery pack, inverter, battery management system, etc. The inverter directly
converts the battery into single-phase and three-phase AC power. Normally, you
only need to freely choose the charging period to charge the battery pack. When
the battery pack is fully charged, it can be called up at any time within a
year, without the need for float charging. We can supply 100KW, 1000KW, 5000KW,
and megawatt level mobile emergency energy storage vehicles, which can be used
for power supply in national defense and military fields, civil disaster relief
and rescue, or large public activity venues. Normally, fully charge with low
valley electricity and be on standby to deliver electricity to the destination
at any time.
2. Fixed energy storage power station
The fixed energy storage power station consists of a lithium-ion battery
pack and BMS management system, PCS converter system, EMS energy monitoring
system, auxiliary systems (including temperature control, fire protection,
etc.), and is a power station type energy storage system installed in a
container. Because lithium-ion batteries have small self discharge, they do not
need to operate in a floating charge state for a long time like traditional
lead-acid batteries or nickel cadmium and nickel hydrogen batteries. Energy
storage power stations, combined with new energy generation systems, become
distributed power sources for independent microgrids. Suitable for supplying
reliable power sources in areas with no or no electricity, and can also provide
peak shifting, valley filling, and frequency regulation services for large power
grids.
Battery energy storage power stations can be jointly applied with
distributed/centralized new energy generation, which is one of the effective
ways to solve the problem of grid connection of new energy generation. With the
increasing scale of new energy generation and the continuous development of
lithium-ion battery energy storage technology, it will become a major key
technology supporting China's clean energy development strategy.
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