NASA NTRS · 19710015129
Automatically charging battery of electric storage cells
Warkentine, D. K.. 1968-11-26. Automatic battery charger Patent. https://ntrs.nasa.gov/citations/19710015129
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Circuit combines functions of dc-to-ac inversion (for driving ac motor in battery-powered vehicle) and ac-to-dc conversion (for charging battery from ac line when vehicle not in use). Automatically adapts to either mode. Design of integrated inverter/charger eliminates need for duplicate components, saves space, reduces weight and cost of vehicle. Advantages in other applications : load-leveling systems, standby ac power systems, and uninterruptible power supplies.
Sealed electric storage battery with gas manifold interconnecting each cell
Lightweight, rugged, inexpensive satellite battery for producing electrical power from ionosphere using electrodes with different contact potentials