Nickel-Hydrogen Batteries - Principles and Practice by A. Zimmerman
By A. Zimmerman
Nickel-hydrogen battery cells supply one of many longest-lived and most useful rechargeable battery structures ever built. The Aerospace company used to be instrumental within the learn, improvement, and checking out of such batteries. basically built to be used in satellite tv for pc and area energy structures, their particularly lengthy lifestyles used to be worth the excessive expense linked to the expertise, they usually quickly changed lots of the nickel-cadmium batteries utilized in prior satellites. This publication presents the reader with an in-depth view of nickel-hydrogen phone expertise: the way it was once constructed, How and why it really works, how one can enforce and discover its final power, and What can get it wrong whether it is now not safely managed.
- info and knowledge showing during this e-book are for informational reasons in simple terms. AIAA and the writer should not accountable for any damage or harm because of use or reliance, nor do AIAA and the writer warrant that use or reliance could be unfastened from privately owned rights.
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To satisfy the need for cells in the 60 to 100 A h capacity range, EPIJ developed a dual-stack cell design that enclosed two stacks within the same pressure vessel. The two stacks were attached to a weld ring that was welded to the center of the cylindrical portion of the pressure vessel, thus providing mass balance about the point where the stacks 26 The Historical Evolution of Cell Designs were supported. Electrical connection of the two stacks in parallel provided twice the capacity that could be achieved from a single stack.
D. Dunlop, G. M. Rao, and T. , Pub. 1314, September 1993), pp. 1-54. 3 B. A. Moore, H. M. Brown,and T. B. Miller, “International Space Station Nickel Hydrogen Battery Cell Testing at NAVSURFWARCENDIV Crane,” Proc. of the 32nd International Energy Conversion and Engineering Con$, Vol. 1 (1997), pp. 174-179. 3 Electrical and Thermal Performance The electrical and thermal characteristics of nickel-hydrogen cells are among the most important variables to consider when designing a battery power system.
Open-circuit periods in the fully discharged state will result in a temporarily reduced capacity along with a slightly elevated recharge voltage. This is one reason favoring a “wake-up” cycle after any significant period of open-circuit stand. Active material in the nickel electrode that has not recently undergone full recharge and discharge tends to be more difficult to charge, thus providing reduced capacity. A wake-up cycle that fully recharges and then discharges the cell will eliminate this condition.