Characterization testing of a 40 ampere hour bipolar nickel—hydrogen battery

✍ Scribed by Jeffrey C. Brewer; Michelle A. Manzo; Russel P. Gemeiner

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 998 KB
• Volume: 29
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/0378-7753(90)85009-2

✦ Synopsis

Extensive characterization testing has been done on a second 40 ampere hour (A h), lOcell, bipolar nickel-hydrogen (Ni-H,) battery to study the effects of operating parameters such as charge and discharge rates, temperature, and pressure on capacity, A h and watt hour (W h) efficiencies, end-ofcharge (EOC), and mid-point discharge voltages. Testing to date has produced many interesting results, with the battery performing well throughout the test matrix except during the high-rate (5 C and 10 C) discharges, where poorer than expected results were observed. The exact cause of this poor performance is, as yet, unknown. Small scale 2 in. X 2 in. battery tests are to be used in studying this problem.

Low earth orbit (LEO) cycle life testing at a 40% depth of discharge (DOD) and 10 "C is scheduled to follow the characterization testing.