Abstract
Accelerated life testing (ALT) of batteries is
performed to estimate the number of life cycles a battery can
withstand in any mission fulfilling the mission power
requirements. This test is destructive; therefore the battery cycles
are exhausted completely. For ALT, selective samples are used to
qualify the whole lot. Life of any space mission is dictated by
batteries used in the mission, therefore the qualification process
of batteries is quite critical.
The present paper elaborates the design and development of
Accelerated Life Tester for batteries (all types) according to the
requirements of the Society of Automotive Engineer (SAE)
standards. The setup is able to perform both charge and
discharge cycles simultaneously with programmable cutoff
voltage and current limits. Dedicated data acquisition system
(DAQ) is developed in LabView that is capable of receiving data
at high rates. Different sensors are used to monitor and control
the test. The recorded data include body temperature of
batteries, terminal voltages and current drawn. The real time
data is stored in the LabView data file for post processing and at
the same time it is shown as real time graphs for monitoring the
test through a graphical user interface (GUI). Qualification of
batteries is performed on selected samples in extreme test
conditions, including high temperature, a high discharge rate and
a high depth of discharge (DOD). The present setup provides
these test conditions for performing ALT of batteries. The GUI
controls every function of the test centrally, from test initiation to
test termination that makes the test setup fully automated.
Syed Muhammad Arsalan Bashir, Syed Kazim Hasan Zaidi, Muhammad Zaheer. (2015) Design and Development of Accelerated Life Tester for Qualification of Batteries, Journal of Space Technology , Volume 5, Issue 1.
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