4. Nickel-metal hydride battery management
Battery charge management is a key factor in ensuring optimum battery life. This applies to all technologies (lead, nickel or lithium). End-of-discharge detection is also important to avoid cell inversion and, as with lithium, may even be imperative for safety.
4.1 Load operation
Typical battery capacity is measured according to the international standard CEI 61951-2 . The protocol describes a sixteen-hour charge at a current equivalent to the battery capacity divided by ten. The capacity is then measured, after a one-hour rest, during a discharge at a current equivalent to the capacity divided by five. As a result, nickel-metal-hydride batteries are very regularly charged at constant current....
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Nickel-metal hydride battery management
Applications
Bibliography
Websites
Panasonic catalog – Eneloop element https://www.panasonic-eneloop.eu
VARTA microbattery http://products.varta-microbattery.com
...Events
Congrès Batteries 2018, takes place every year in Nice
Show: Batimat Reed Expositions International construction show, held every two years in Paris (odd-numbered years). http://www.batimat.com
Captronic Day https://www.captronic.fr
...Standards and norms
- Alkaline and other non-acid batteries – Sealed batteries for portable applications – Part 2: Nickel-metal hydride - IEC 61951-2 - 2017
Patents
BECCU (K.). – Electrical Accumulator with a Metal Hydride Serving as the Cathodic Reactive Material Arranged in Suspension in the Electrolyte. U.S. Patent 3,520,728, July 14, 1970.
YASUYUKI (H.), TADAYOSHI (T.), YOSHIFUM (M.), KATSUHIKO (S.), TOSHIYUKI (N.) and IKUO (Y.). – Separator for nickel-metal hydride storage battery and nickel-metal hydride storage battery. Japanese Patent 2003068270 (A) – July...
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