Quick Details
- Processing Time:-
- Port:-
- Supply Ability: -
- Brand Name:-
Cylindrical lithium ion
battery cells, a type
of custom lithium batteries, are cells enclosed in a cylinder-shaped case, it has an excellent energy density and the high voltage ensures more power to provide in limited space. Because of small
and round size, it's convenient to assembly them in different combinations. For Li-ion cylindrical rechargeable
batteries, the
standard formats are 18650, 26650, 21700 and 32700, they are named by the diameter and height. Lifepo4 cylindrical cells are commonly used in smart
appliance, e-bikes, medical devices, and energy storage systems.
Types of Cylindrical Li-ion
Cell
18650 Lithium Battery
Capacity from 2200mAh to
3500mAh
UL, CB, PSE, IEC, BIS, BSMI,
CQC certified
Long cycle life over 1000
times
21700 Lithium Battery
Density reaches 251
Wh/kg
Trendy updated choice for
Ebikes
Forthcoming 21700 6.0Ah
Battery
26650 Lithium Battery
Longer lifespan up to 3000
times
LFMP and NCM material for
choose
High consistency with record
high good feedback
32140 LiFePO4 Battery
Energy density ~180Wh/kg in
safe LFP material
Internal
resistance<1.8mΩ
-20℃ discharge>70%
5000+ cycles
40135 LiFePO4 Battery
Capable of maximum 40A
continuous discharge
Up to 8A charging
Excellent performance in
extrem conditions
4680 Battery
Ultra high rate and ultra
strong heat dissipation
Semi-solid system to ensure
intrinsic safety
Cell energy
density>300Wh/kg
Structure of Cylindrical
Lithium Ion Battery
A large cylindrical battery is made of anodes, separators, and
cathodes that are winding in a cylinder-shaped case. The anode electrode is made of copper foil with graphite, and the cathode is a ternary materials coating on Al foil. To avoid contamination
between the two parts, the anodes and cathodes are usually processed in different rooms. When the electrodes have been prepared, they would be assembled in winding machine where separator is
layered between the anode and the cathode to form the internal structure of the cell.
How Are Cylindrical Cells
Manufactured?
The production processes
of cylindrical rechargeable lithium ion battery mainly include mixing, coating,
drying, calendering, slitting, winding, welding, electrolyte injection, sealing and testing. Each process needs to be controlled in specific temperature and humidity. For the reliability of
lithium phosphate battery cells, CHAM, a professional lithium battery manufacturer, conducts 100% X-Ray inspection to ensure internal winding alignment & safe
battery structure. In lfp cylindrical cells manufacturing process, highly automated equipment and advanced technology are critical, will have a positive impact on production costs, reducing the
cost of on both raw material and final battery cell.
Prismatic VS Cylindrical
Lithium Ion Battery
Lithium cylindrical cells,
with the cylindrical shape and construction, were one of the first mass-produced battery in the world and are dominant in some applications. Prismatic cell batteries, on the other hand, are
popular because of their long life span, thin shape, and efficient use of space.
Lifepo4 cylindrical
batteries are convenient because of their variety of combinations to needed power and battery space. For LFP Prismatic Cells, they are safer than cylindrical lithium-ion batteries by the nature
of LPE material.
There are many lithium batteries
companies in
China, but we are one of the best choices for you.