| Advantage
of tubular traction battery over flat traction battery.
|
| Lead acid
battery undergoes a corrosion process of the positive
plate support during every charge cycle . It can not
be avoided. This phenomena is known as anodic corrosion
in battery technology. |
| To prevent
premature failure of positive plates,the corrosion of
the positive plate support should be limited to the
surface only. |
The
corrosion should not penetrate in the cross-section
of the plate support. |
Casting
process available are
a) Gravity pour casting
b) Low pressure pumping method
c) High pressure casting method. |
Grids
which make the plate support for the positive in a
flat plate traction cell is made by gravity pour casting
method. Such casting method leaves porous opening
on the surface as shown by the Scanning Electron Microscope
study. |
The
high pressure casting process can generate casting
with single direction orientation of the grains which
prevents creep. |
Creep
is a mechanical phenomena taking place in metals under
stress there by weakening the metal member. |
This
stress is generated in the positive plate support
in lead acid cells/battery when it expands in volume
and is accelerated by the temperature reached in the
charging process. |
The HIGH PRESSURE CASTING TECHNOLOGY is the perfect
solution for the long life and durability of tubular
traction cells and batteries. |
