Lithium Battery workflow is just under the control of both ISO9001 and engineers' productions technical so as to give high quality and unique features
Qulity Control :
a. Mix solvent and bond
separately with positive and
negative active materials. Make into
positive and negative till uniformity.pasty
materials after stirring
b. Coat metal foils uniformly
with the made-up pasty
materials on two sides. Then
make sheets dry
c. Cut a roll of positive and
negative sheet into smaller
sheets according to battery
specification and punching
requests.
d. Press the above
positive and negative sheets
till they become flat.
e. Punch sheets into
electrodes according to
battery specification
f. Re-press electrodes
till they become flat and
stout.
g. Strictly choose the
same weight cathodes and
anodes to match according
to battery design of
capacity and layers
h. Separate the cathodes
and anodes completely by
stacking separator into “s”
according to battery
specification and capacity
i. A cell is formed after
stacking. Test its insulation
performance
j. Weld Al & Ni tabs to
lead out anode & cathode
terminals
k. Test a cell’s insulation
performance after tabs is
welded, trimmed and
pasted adhesive tape
l. Seal the mouth and
left side after putting the
naked cell into punched
Al compound packing film
m. Test a cell’s
insulation performance
after it is sealed
n. Dry the battery waiting
for filling with vacuum to
drain out wet gas
completely in order to make
o. Fill electrolyte into
battery by filling mouth, which
should be finished in a dry
glove box. Relative humidity
is controlled below 1%RH
p. Seal the filling mouth after filling, which should be finished in a dry glove box.
q. Inspect battery impedance and the weight of electrolyte to see if they meet the design requests
r. The battery will produce gas after charging. Abstract gas from the battery till vacuum.
s. Seal right side of the battery to make sure its airtight performance
t. Cut the redundant Al compound packing film of left & right sides and fold automatically at the same time with an automatic
u. Sort batteries according to their capacity with highprecision sorting equipments, which is watched and
v. Store the batteries in batches in warehouse after inspecting their impedance, voltage, capacity and size. The room temperature is 10~45 and the humidity is 65 20%. The aging time is 30 days. The batteries is re-inspected regularly every 8 days during aging.
w. Assemble according to customers requests after aging. (The assembly styles can be different to meet the customer's requests). The operator must inspect every batch battery's voltage, impedance and so on before assembly.
x. Inspect the battery
performances according
to GB/T18287-2000. The
battery can’t leave the
factory until OQC
consider it qualified after
sampling inspection
according to GB/T2828.1
y. Package consists of
an inner plastic tray and
an outer carton. Enlace
cartons to fasten with
strapping strips on stack
board. Finally coat clear
plastic film on these
cartons to moisture-proof.
This is to make sure safe
transportation and to
meet the regulations of
GB191-1990 Packaging-
Pictorial Marking for
Handling of Goods
z. Ready now for shipping
Quaulity Feed Back sedis always welcome by GMB QC, and it is a routine for our sales to send our customer a Feed-back Form on monthly basis, please kind fill it it and send us in time.
Inpection is going on at every step of production process.
CE is a mark for safety certification. It is regarded as a passport for manufacturers to open up and enter the European market. All products, meeting their requirements will have CE certification, then can be sold in member countries of the European Union. Therefore, CE certification brings about the unrestrained circulation of goods in the European Union.
ISO is a non-governmental organization that forms a bridge between the public and private sectors. deals with the fundamentals of quality management systems; deals with the requirements that organizations wishing to meet the standard have to meet. ISO 9001 is one of the most widely used management tools in the world today.
Since 2009 year, more than 1,500 items of ER, CR, Lithium polymer , Ultra-thin battery samples were sent to Underwriters Laboratories respectively for the safety test, and got UL certification.
UL is a global independent safety science company offering expertise across five key strategic businesses: Product Safety, Environment, Life & Health, University and Verification Services.