NiZn battery is validated for 12-V automotive use

June 02, 2015 // By Paul Buckley
The Institute of Automotive Technologies Dresden (IAD) has validated the benefits of PowerGenix's NiZn battery technology for stop-start and auxiliary EV applications by passing critical testing for 12 V automotive use.

PowerGenix has completed a comprehensive product evaluation test plan with Institute of Automotive Mechatronics GmbH (IAM), a part of the Institute of Automotive Technologies Dresden (IAD), at the Technische Universität Dresden (TUD).

IAD evaluated NiZn performance capabilities to meet all the requirements of a 12 V auxiliary power unit for plug-in hybrid electric (PHEV) and all-electric vehicles (EVs), as well as a 12 V starter battery for stop-start applications.

“The unique cost and performance advantages of NiZn over other advanced chemistries make it an extremely promising alternative for 12 V lead-acid batteries in electric vehicles and stop-start applications,” said Professor Bernard Bäker, Managing Director at IAD. “This independent technology assessment is a key step in endorsing NiZn battery performance gains for use in PHEV and EV applications, as well as future stop-start models, for major automotive OEMs.”

With up to 200 percent more usable energy and 30 percent lower weight and volume, NiZn offers benefits compared with lead-acid batteries as a replacement for 12 V auxiliary systems in PHEVs and EVs. Weight carries a high premium in these vehicle architectures, which in turn imposes limitations on their all-electric driving range capabilities. NiZn contains more than 90 percent recyclable materials, with no lead or rare earth metals.

Major global auto makers are working towards adopting NiZn for their 12 V stop-start vehicle applications, which are one of the most cost-effective and efficient means of optimizing fuel economy. Current estimates put stop-start efficiency improvements at approximately five percent, while next generation systems with NiZn may achieve savings as high as eight percent. With lower weight, improved service life and high sustained charge acceptance, NiZn is an ideal alternative to lead-acid, offering further fuel economy improvements.