During the last years DAUG has developed sealed / metal hydride cells of rectangular shape. The cells makes use of electrodes in fibre technology and the RECOM design proving fast charge ability at low internal gas pressure of the cells (normally below the ambient pressure). Whereas for the Ni/Cd battery system a lot of experience has been gained in the past from laboratory and during field tests, the state of the Ni/MeH system has reached the prototype stage. The cells are operational in upright as well as lying position. That enables the user to adapt the battery containment for most of the spare space in the car. In addition to the cells DAUG has developed peripheral parts for the application of the battery in electric vehicles and delivers complete battery systems. The first batteries are under bench test and have been already installed in EV's. There are two series of cell performance type, the H type designed for pure EV and the X type cells designed for hybrid EV (HEV) with a higher specific power demand. An additional XX-type cell will meet even extreme high power requirements for special HEV application. The cell sizes differ only in their thickness and can be used in series of single cells or couple of two parallel cells allowing to build any required Ah-capacity up to 280 Ah. The specific energy of the H-type cells are in a range of 60 to 65 Wh/kg and display energy densities of about 130 to 140 Wh/l. For the X-type cell series the numbers amount to 50 to 55 Wh/kg and 110 to 130 Wh/l respectively.
Sealed nickel-metal hydride batteries and their application in electric vehicles and hybrid cars
Verschlossene Nickel-Metallhydrid-Batterien und ihre Anwendung in Elektro- und Hybridfahrzeugen
1995
10 Seiten, 10 Bilder, 2 Tabellen
Conference paper
English
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