The consistency of lithium-ion battery packs should be judged by using special tools to measure capacity, internal resistance, and charge and discharge curves.
To
measure the capacity internal resistance and discharge platform of a
single battery, it also depends on the process level of lithium battery
assembly and the battery performance requirements of specific products.
The
consistency of a lithium battery pack refers to the sameness of
important characteristic parameters of a group of lithium batteries. The
consistency of a battery refers to the consistency of battery weight
and voltage. There are multiple strings of cells in the same battery
pack. Each parameter is best. All are in a smaller range, which is good
for consistency.
The
higher the consistency of the capacity, internal resistance, and
charge-discharge curve of batteries produced with the same material and
the same process, the better. Whether batteries can be assembled into battery packs on a large scale is very critical. The larger the battery pack size, the higher the consistency requirements.
The
inconsistency of the battery (within a certain range) can only be
solved by the external battery management system, which is necessary.
Even if a good product is made, there are differences in capacity,
internal resistance, voltage, etc. In other words, it is impossible to
make two identical battery cells.
The
consistency of performance between batteries is not directly related to
the use of a certain material. Only performance is directly related to
the material. From the current level of most manufacturers in China, the
consistency of batteries is not satisfactory, because most of them are
still Manual operation or semi-automation is used, and the differences
between personnel are great, resulting in poor battery consistency.
The consistency of the cell refers to the consistency of the physical properties.
But
we usually don't have professional testing tools. Therefore, under
normal circumstances, as long as the same brand and the same batch of
batteries are used, and the new and old batteries cannot be mixed, the
consistency can be basically guaranteed (of course, the same voltage and
capacity are required).
BENZO Energy Technology Co.,Ltd
UFine Technology Co., Ltd
Site: www.bz-battery.com / www.benzoenergy.com
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