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Hyundai developing safety system calibrated for 'secondary impacts'

There is an inherent flaw with how traditional airbags are used and deployed: They can only reply to one impact. The Hyundai Motor Group wants to address this with a new "multi-collision airbag system" that focuses on impacts that occur after the first point of contact. Hyundai defines multi-collision accidents as "those in which the primary impact is followed by collisions with secondary objects, such as trees, electrical posts or other vehicles." In a press release, Hyundai noted that about 30 percent of roughly 56,000 accidents between 2000 and 2012 in North America involved these types of multi-collisions, according to the National Highway Traffic Safety Administration (NHTSA)'s National Automotive Sampling System Crashworthiness Data System division. The airbag systems in today's cars don't always go off when the first accident occurs, and when a car goes through a secondary impact, the airbags may no longer provide the best safety. Hyundai's new system can read the positions of the car's occupants and react in a more beneficial way. It can quickly recalibrate after the first impact based on readings from the vehicle and the people inside, which allows the second part of the crash to trigger the airbags. As of now the system is still in development, but Hyundai Motor Group is planning to use it in both Kia and Hyundai vehicles in the future. Which models and which markets it will apply to first are yet to be determined. Related Video:

Hyundai: hydrogen cars will gain wider acceptance in 10 years

Hyundai Motor Company said Monday it believes hydrogen fuel cell vehicles are the future for eco-friendly cars despite challenges of limited infrastructure and slow sales. South Korea's largest automaker has sold or leased 273 Tucson fuel cell SUVs since beginning production in 2013, mostly in Europe and California. The company had plans to make 1,000 in its first year of production. Kim Sae Hoon, general manager at Hyundai's fuel cell engineering design team, said fuel cell cars represent a bigger opportunity than electric cars because competition is less fierce. Hydrogen-powered cars also give more flexibility to designers, he said. They can be scaled to big vehicles such as buses as well as small cars. They can also be refueled as quickly as gasoline cars while traveling more miles than electric vehicles. The Tucson's European version, called the ix35 Fuel Cell, can travel up to 594 kilometers (369 miles) while its US model travels up to 265 miles (426 kilometers) on one charge on the various government efficiency tests. It emits water vapor and no greenhouse gases. High prices and the dearth of fueling stations are barriers to sales of fuel cell vehicles. Hyundai said it will be another 10 years before hydrogen cars start gaining wider acceptance. In the meantime, sales of eco-friendly cars are dominated by hybrid models such as Toyota's Prius and electric vehicles such as the Nissan Leaf, which are more affordable than fuel cell cars. Hyundai also produces hybrid cars and electric vehicles. It plans to invest 11.3 trillion won ($10 billion) in eco-friendly technology including hybrid cars, electric battery vehicles and hydrogen fuel cells in the four years from 2015. To boost sales, Hyundai slashed the Tucson fuel cell's price in South Korea in February to 85 million won ($76,000) from 150 million won ($134,000). South Korean customers are local government offices as there is no government subsidy for consumers. South Korea's government plans to establish 10 charging stations for fuel cell cars and expects 1,000 hydrogen-powered vehicles will be on the streets in South Korea by 2020. Japan started production of hydrogen-powered cars later than South Korea but such vehicles are experiencing faster growth in Japan with support from Prime Minister Shinzo Abe's government. Toyota started sales of its Mirai fuel cell sedan in December and has decided to increase production to 3,000 vehicles in 2017, which is quadruple production this year.

Solid-state batteries: Why Toyota's plans could be a game-changer for EVs

Word out of Japan today is that Toyota is working on launching a new solid-state battery for electric vehicles that will put it solidly in the EV game by 2022. Which leads to a simple question: What is a solid-state battery, and why does it matter? Back in February, John Goodenough observed, "Cost, safety, energy density, rates of charge and discharge and cycle life are critical for battery-driven cars to be more widely adopted." And risking a bad pun on his surname, he seemed to be implying that all of those characteristics weren't currently good enough in autos using lithium-ion batteries. This comment is relevant because Goodenough, professor at the Cockrell School of Engineering at the University of Texas at Austin - it so happens, he turns 95 today - is the co-inventor of the lithium-ion battery, the type of battery that is pretty much the mainstay of current electric vehicles. And he and a research fellow at U of T were announcing they'd developed a solid-state battery, one that has improved energy density (which means a car so equipped can drive further) and can be recharged more quickly and more often (a.k.a., "long cycle life") than a lithium-ion battery. (Did you ever notice that with time your iPhone keeps less of a charge than it did back when it was shiny and new? That's because it has a limited cycle life. Which is one thing when you're talking about a phone. And something else entirely when it involves a whole car.) What's more, there is reduced mass for a solid-state battery. And there isn't the same safety concern that exists with li-ion batteries vis-a- vis conflagration (which is why at airplane boarding gates they say they'll check your carryon as long as you remove all lithium-ion batteries). Lithium-ion batteries may be far more advanced than the lead-acid batteries that are under the hood of essentially every car that wasn't built in Fremont, Calif., but as is the case with those heavy black rectangles, li-ion batteries contain a liquid. In the lithium-ion battery, the liquid, the electrolyte, moves the lithium ions from the negative to the positive side (anode to cathode) of the battery. In a solid-state design, there is no liquid sloshing around, which also means that there's no liquid that would freeze at low operating temperatures. What Toyota is using for its solid-state battery is still unknown, as is the case for the solid-state batteries that Hyundai is reportedly working on for its EVs.