The experimental set up for battery test is shown in Fig.1.
The lithium titanate battery tested in this paper is manufactured
by TiankangTM Battery which has a nominal voltage of 2.4 V
and a nominal capacity of 15 Ah. Specifications of the lithium
titanate battery are tabulated in Table I. A DC electronic load
from ITECH, IT8514C, with the rating of 120V, 240A,
1200W, is used to discharge the battery. A DC power supply
from Elektro-Automatik, EA-PSI 8200-70R, with the rating of
200V, 70A, 5000W, is used to charge the battery with constant
current. An environment chamber, JH-KE, manufactured by
JEIO Tech is used to monitor the environment temperature of
battery. The measurement data is measured and collected by a
data acquisition device, DAQ NI9219, from National
Instrument. LabVIEW is then used to store the experimental
data. Sampling time for the data acquisition process is set to 1
sample per second.