Today, with the global focus on developing new energy industries such as
electric vehicles and energy storage batteries, lithium batteries have received
higher attention as widely recognized aspiring energy storage components. China
has also invested huge funds and policy support in the field of power batteries,
and has now emerged as a globally recognized backbone enterprise in the battery
industry, including BYD, BYC, Lishen, and AVIC Lithium Battery. Battery barrier
and electrolyte are four very important raw materials for lithium batteries. Due
to the high risk of investment and technical barriers, lithium battery barrier
has not been able to achieve large-scale production in China, becoming a
bottleneck that restricts the development of lithium battery industry in China.
Especially in the field of power lithium-ion batteries with higher requirements
for safety and consistency, it is an obstacle that China cannot overcome from a
major producer of lithium batteries to a strong producer of lithium
batteries.
Power battery manufacturers analyze that the primary production processes
for lithium battery barriers can be divided into two categories: dry process and
wet process. The vehicle power battery has a large capacity and high safety
requirements, which also require the barrier to have higher strength, liquid
retention ability, and safe temperature. The dry process can adopt a multi-layer
composite form, which has many advantages such as structural safety, uniform
pores, good breathability, and high temperature resistance. It fully meets the
strict requirements of power lithium batteries. Many power battery manufacturers
at home and abroad recognize the barrier of this process as the application
direction of power lithium batteries.
The global lithium battery production capacity is rapidly expanding, and as
the primary material, the growth rate of lithium battery barrier production
capacity has lagged behind. Currently, many battery manufacturers have expressed
varying degrees of gap and shortage. The progress of barrier production capacity
is not only an urgent requirement for the development of China's lithium battery
industry and even the international lithium battery industry. Therefore, the
rapid emergence of more ethnic enterprises with the same material as Star Source
in China is an important measure to improve the professional industry chain of
lithium batteries in China, enhance the competitiveness and sustainable
development ability of lithium battery production enterprises, and is also a key
link related to the rapid development of China's new energy vehicle industry
1. The cycle life of lead-acid battery with super long life and long life
is about 300 times, and the very high cycle life is 500 times. The Lithium iron
phosphate power battery produced should have a cycle life of more than 2000
times, and the standard charging (5 hour rate) can be used for 2000 times. Lead
acid batteries of the same quality are "new half year, old half year, protection
and protection half year", many of which are only 1 to 1.5 years old, while
Lithium iron phosphate battery will be used for 7 to 8 years under the same
conditions. Overall, the cost performance ratio will be more than 4 times that
of lead-acid batteries
2. Safe operation, Lithium iron phosphate has completely solved the
potential safety problems of lithium cobalate and lithium manganate. Lithium
cobalate and lithium manganate will explode under fierce collision, posing a
threat to the life safety of customers, while Lithium iron phosphate will not
explode even in very bad traffic accidents after passing the strict safety
test.
3. It can quickly charge and discharge at a high current of 2C. Under a
dedicated charger, the battery can be fully charged within 40 minutes at 1.5C,
and the starting current can reach 2C. However, lead-acid batteries do not have
this performance.
4. High temperature resistance, the peak value of Lithium iron phosphate
electric heating can reach 350 ℃~500 ℃, while lithium manganate and lithium
cobalate are only about 200 ℃.
5. Large capacity.
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