2021年1月23日发(作者：battery)
Cathode slurry

This
is
the cathode slurry
mixing room. First ,we
mix the powder with NMP in the mixing tank .And the
NMP
is
added
to
the
mixing
tank
in
three
times.
Add
more
NMP
to
the
mixing
tank
to
adjust
the
slurry
viscosity. Finally, transfer the slurry to the coating line
after slurry sifting.


Anode slurry
This is the anode powder process. First, we mix
CMC with water in that anode binder mixing room, and
after weighing, the raw material is transferred into the
mixing tank. Then, we add the anode binder solution to
the mixing tank in 3 times. After that, we add the SBR
for the final mixing. and then, we add more water to
adjust the slurry viscosity. Next we sift the slurry in
that sifting room. Finally, we transfer the finished
slurry to the coating line.

Vocabulary:

viscosity

粘性

sifting




筛













Coating

Now,
we
are
in
coating
line.
We
use
back
reverse
coating.
This
is
the
slurry-mixing
tank.
The
anode
（
Cathode
）

slurry is introduced to the coating header by
pneumaticity
from
the
mixing
tank.
The
slurry
is
coated
uniformly on the copper foil, then the solvent is evaporated
in
this
oven.
There
are
four
temperature
zones,
they
are
independently
controlled.
Zone
one
sets
at
55
degree
C,
zone
two
sets
at
65
degree
C,
zone
three
sets
at
80
degree
C,
zone
four
sets
at
60
degree
C.
The
speed
of
coating is 4 meters per minute.

You see the slurry is dried. The electrode is wound to
be a big roll and put into the oven. The time is more than 2
hours and temperature is set at 60 degree C.

Throughout the coating, we use micrometer to measure
the electrode thickness per about 15 minutes. We do this
in order to keep the best consistency of the electrode.


Vocabulary:

coating line

涂布车间

back reverse coating

辊涂

coating header
涂布机头

Al/copper foil
铝
/
铜箔

degree C
摄氏度

temperature zones
温区

wind to be a
（
big
）
roll
收卷

evenly/uniformly
均匀

oven
烘箱

evaporate
蒸发

electrode
极片



Electrode
After
coating
we
compress
the
electrode
with
this
cylindering machine at about
7meters
per minute.
Before
compress we clean the electrode with vacuum and brush
to eliminate any particles. Then the compressed electrode
is wound to a big roll. We use micrometer to measure the
compressed
electrode
thickness
every
10
minutes.
After
compressing we cut the web into large pieces. We tape the
cathode
edge
to
prevent
any
possible internal
short.
The
large electrode with edge taped is slit into smaller pieces.
This is ultrasonic process that aluminum tabs are welded
onto cathodes using ultrasonic weld machine. We tape the
weld
section
to
prevent
any
possible
internal
short.
And
finally, we clean the finished electrodes with vacuum and
brush.

Vocabulary:

cylindering

柱形辊压

vacuum
真空

particle

颗粒

wound

旋紧卷绕

micrometer
千分尺

internal short
内部短路

slit
分切

ultrasonic
超声波

weld

焊接


Anode making

In
anode
making
process,
we
cut
the
nickel
roll
into
certain
length
strips.
At
the
mean
time,
we
put
a
small
piece of insulation tape to the tab in order to prevent any
possible
internal
short.
Then
the
prepared
nickel
tab
is
riveted
on
anode
and
pat
plain.
We
also
tape
the
rivet
section to prevent any possible internal short. And finally,
we clean the finished electrodes with vacuum and brush.



Jelly roll

This
is
Jelly
roll,
a
manual
winding
process.
In
the
course
of
Jelly
roll,
firstly,
we
place
the
separator
in
between central pins, press the foot switch to turn central
pins about 120 degrees. Secondly, place the anode to the
edge
of
central
pins,
and
turn
central
pins
about
180
degrees.
Lastly,
place
the
cathode
to
the
edge
of
central
pins.
During
the
winding
process,
we
apply
tension
by
pressing
the
electrodes
and
the
separator.
We
put
the
termination tape at the end.


After Jelly roll, we check the short circuit, then form the
Jelly roll by pressing, so that it is easier to insert the Jelly
roll into the can.

Control points:
1. When winding to the end of the anode, covering the
anode completely by the separator.
2. In the whole process, it is the most important points
to
ensure
the
best
alignment
among
the
cathode,
the
anode
and
the
separator
for
the
Jelly
roll.
The
separator
has
to
cover
the
anode
and
the
cathode,
and
the
anode
has
to
cover
the
cathode
completely.
These
points
are
mainly checked before short checking.

Vocabulary:

Jelly roll



卷绕

Manual


手工的

Separator

隔膜纸

central pin

卷针