Production process of battery case
The production process of battery steel case: steel strip →
electroplating nickel → diffusion heat treatment → steel strip
slitting → finished product. The technical feature of the process
is to control the nickel plating on both sides of the steel strip
and adopt the diffusion heat treatment process to ensure the
thickness of the coating, Compactness, adhesion and simultaneous
extensibility meet product requirements. Production process flow
chart Dividing and shearing unit 330 production line One-meter
continuous electroplating production line Bell-type annealing
furnace Packaging production line Product storage area.
Production process of battery case:
Steel strip→nickel plating→diffusion heat treatment→strip
slitting→finished product
Lithium battery casing treatment process
1. Powder electrostatic spraying process:
The working principle of powder electrostatic spraying technology
is almost the same as the electrostatic spraying method of general
liquid paint, the difference is that powder spraying is dispersed
rather than atomized. It is a coating sprayed by an electrostatic
powder spray gun, which makes the powder particles negatively
charged while being dispersed. The charged powder particles act on
the grounded aluminum case of the power lithium battery through
airflow and electrostatic attraction, and then heat, melt and
solidify to form a film.
2. Electrophoretic coating process:
The electrophoretic coating process is a coating method that uses
an external electric field to cause the particles such as pigments
and resins suspended in the electrophoretic solution to migrate in
a directional manner and deposit on the surface of the substrate of
one of the electrodes. It has the characteristics of water
solubility, non-toxicity, and easy automatic control. After the
electrophoretic coating process, the aluminum case of the power
lithium battery has a soft surface gloss and can resist the acid
rain invasion of cement and mortar.
3. Electrochemical surface ceramic technology;
The aluminum casing of the power lithium-ion battery pack adopts
plasma-enhanced electrochemical surface ceramic technology, which
is of good quality but high cost. The profiles produced by this
process have more than 20 colors. The biggest feature is that they
can be the same as printed cloth. The surface of the profiles is
brightly colored and the decorative effect is the best.
4. Grinding process:
Frosted aluminum profiles can prevent light interference from
bright aluminum profiles in certain environments and conditions in
architectural decoration. Its surface is as delicate and soft as
brocade, which is favored by the market. However, the existing
frosted materials must overcome the defects of uneven sand grains
and visible patterns on the surface.
