Explain the difference between power lithium-ion batteries, capacity lithium-ion batteries, and consumer lithium-ion batteries. Posted by benzoenergy.com
There are many types of lithium ion batteries, including power lithium ion batteries, capacity lithium ion batteries, and consumer lithium ion batteries. Power-type lithium-ion batteries and capacity-type batteries differ in materials and processing techniques. The difference in discharge characteristics means that the range of use of the two is quite different. When purchasing a Li-ion battery pack, be sure to differentiate between the two to prevent adverse effects on the load.
1. The difference between power lithium-ion battery and capacity lithium-ion battery
A power lithium-ion battery pack refers to the power source that powers the tool. Currently, it mostly refers to the lithium-ion battery packs
that power electric cars and electric trains. With the emergence of
plug-in hybrid vehicles, power-type lithium-ion battery packs came into
being. It requires the battery to have high energy storage, be able to
support pure electric driving for a certain distance, and have good
power characteristics, and enter the hybrid mode when the battery power
is insufficient.
(1) Different voltage
In the battery industry, as the voltage increases, the corresponding output voltage will also increase, so that the power-type lithium-ion battery pack
can meet some high-power equipment; the direct impact of the parallel
method is to make the entire battery pack. The current increases, and
the capacity is affected by the output current, so the direct parallel
connection is to increase the capacity of the lithium-ion battery pack.
Battery packs connected in this way tend to have a larger capacity, also
known as capacity. Type lithium-ion battery pack.
(2) The products used are different
Higher
voltage values are required on some large equipment, because low-power
battery packs cannot operate, so power-type lithium-ion battery packs
must be selected. For example, the electric bicycle we usually use, the
voltage value it needs is often 48V. 48V is no small compared to some
situations in our lives. Therefore, it is necessary to use a power-type
lithium-ion battery pack to ensure the operation of the electric
bicycle.
Capacity-type
lithium-ion batteries are like mountaineering and running, requiring
high capacity to maintain a low-power discharge for a long time. It is
often used for small current discharge, but there are also products with
larger capacity requirements, such as mobile power supplies, outdoor
flashlights, etc.
(3) Different internal resistance
The
internal resistance of the power type lithium-ion battery is smaller
than that of the capacity type lithium-ion battery. Taking 18650 as an
example, good manufacturers with 3-rate discharge generally have PDC,
and the internal resistance is about 40; 5-rate discharge generally does
not have PDC internal resistance. Resistance is about 20.
(4) Different discharge characteristics
The
power lithium-ion battery pack is characterized by high current
discharge, and the discharge rate is generally above the market C, which
can achieve instantaneous high current;
The
capacity-type lithium-ion battery is characterized by a small discharge
current, but a large capacity, which can provide stable power supply
for a long time.
2. Analysis of consumer lithium-ion batteries
Consumer
lithium-ion batteries are rising or slowing as consumer electronics
enter the inventory race. Overall, the demand for lithium-ion batteries
will gradually decline as the global consumer electronics market becomes
saturated. The above report predicts that by 2020, the proportion of
demand for lithium-ion batteries in consumer electronics will drop to
30.5%. The proportion of demand in other emerging markets will pick up
significantly, especially the electric transportation and energy storage
markets.
The growth rate
of consumer electronics is slowing down, and consumer lithium-ion
batteries may usher in a reshuffle. Some products with poor quality and
low safety factor will be eliminated, and companies with the advantages
of technology accumulation and production scale are expected to gain new
opportunities.
Consumer
lithium-ion batteries do not need long-term reliability, and generally
do not need to be used alone in groups, so there is not much demand for
consistency. However, because consumer mobile phones and pads have
limited space and are very valuable, consumer lithium-ion batteries have
size requirements. Strict, capacity, energy density and other
requirements are very high. High-end consumer batteries use the most
advanced technologies and materials, while power lithium-ion batteries
require more advanced process control, consistency control and quality
management.
The above is
the difference between power lithium-ion batteries, capacity lithium-ion
batteries and consumer lithium-ion batteries. The performance,
structure, scope of use and parameters of each battery are different,
you can choose according to the actual use scenario!
BENZO Energy Technology Co.,Ltd
UFine Technology Co., Ltd
Site: www.bz-battery.com / www.benzoenergy.com
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