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Is 120 miles just about perfect for EV range?

When it comes to battery-electric vehicles, our friend Brad Berman over at Plug In Cars says 40 miles makes all the difference in the world. That's the approximate difference in single-charge range between the battery-electric version of the Toyota RAV4 and the Nissan Leaf. It's also the difference between the appearance or disappearance of range anxiety. The 50-percent battery increase has zapped any lingering range anxiety, Berman writes. The RAV4 EV possesses a 40-kilowatt-hour pack, compared to the 24-kWh pack in the Leaf. After factoring in differences in size, weight and other issues, that means the compact SUV gets about 120 miles on a single charge in realistic driving conditions, compared to about 80 miles in the Leaf. "The 50 percent increase in battery size from Leaf to RAV has zapped any lingering range anxiety," Berman writes. His observations further feed the notion that drivers need substantial backup juice in order to feel comfortable driving EVs. Late last year, the Union of Concerned Scientists (UCS), along with the Consumers Union estimated that about 42 percent of US households could drive plug-in vehicles with "little or no change" in their driving habits, and that almost 70 percent of US commuters drive fewer than 60 miles per weekday. That would imply that a substantial swath of the country should be comfortable using a car like the Leaf as their daily driver - with first-quarter Leaf sales jumping 46 percent from a year before, more Americans certainly are. Still, the implication here is that EV sales will continue to be on the margins until an automaker steps up battery capabilities to 120 or so miles while keeping the price in the $30,000 range. Think that's a reasonable goal to shoot for?

Toyota finds 10% MPG improvement in hybrid PCU

Keeping up its from-all-angles approach to efficiency, Toyota has found yet another way to eke out up to ten percent more precious MPGs in its hybrid vehicles, this time electronically. The automaker has announced the development of new silicon carbide (SiC) power semiconductors for use in power control units, which it will begin testing on Japanese roads within the next year. The PCU using the silicon carbide compound offers less electrical resistance, which improves efficiency when passing current between the battery and electric motor. It also loses less power after shutting off, and can operate at a higher frequency. The net power loss of the new PCU is just one-tenth of the current silicone-only version (the latter accounting for 20 percent of total electrical power loss in today's hybrids). The result, so far, is a claimed five-percent improvement in fuel economy in test vehicles, with the potential of ten percent by the time the new SiC power semiconductor comes to market. Additionally, the carbide wafers allow for smaller a power module, coil and capacitor, thus allowing the entire PCU to be 80 percent smaller (see the side-by-side comparison in the accompanying photo, which you can click to enlarge). We've got a while to wait before we start to see the carbide technology to start making a real-world impact. Toyota aims to begin using the SiC units in 2020. By then, with improvements in the company's other key efficiency factors - engine technology and aerodynamics - cars like the Prius will likely see significant gains in fuel economy. Read more in the press release below. Toyota Develops 'Diamond-like' Computer Chips to Boost Hybrid Mileage May 20, 2014 Toyota City, Japan – Toyota is using one of the hardest materials in nature after diamonds to develop a semiconductor chip it hopes will improve the fuel efficiency of its hybrids, such as the Prius, by as much at 10 percent. The company and its partners announced today that they have developed a silicon carbide (SiC) power semiconductor for use in automotive power control units. Toyota plans to begin test-driving vehicles with the technology on public roads in Japan within a year. The chips, made from carbide - one of the hardest materials in nature, theoretically have superior characteristics such as one-tenth the electrical power loss and 10 times the drive frequency. Toyota said the chips would also allow it to reduce the size of current automotive power control units by 80 percent.

Japan may aid carmakers facing U.S. tariff threat

TOKYO — Japan is considering giving carmakers fiscal support including tax breaks to offset the impact from trade frictions with the United States and a sales-tax hike planned for next year, government sources told Reuters on Wednesday. Going into a second round of trade talks with the United States on Sept. 21, Japan is hoping to avert steep tariffs on its car exports and fend off U.S. demands for a bilateral free trade agreement that could put it under pressure to open politically sensitive markets, like agriculture. "If the trade talks pile pressure on Japan's car exports, we would need to consider measures to support the auto industry," a ruling party official said on condition of anonymity because of sensitivity of the matter. The auto industry accounts for about 20 percent of Japan's overall output and around 60-70 percent of the country's trade surplus with the United States, making it vulnerable to U.S. action against Japanese exports. Japan's biggest automakers and components suppliers fear they could take a significant hit if Washington follows through on proposals to hike tariffs on autos and auto parts to 25 percent. Policymakers also worry that an increase in the sales tax from 8 percent to 10 percent planned for October 2019, could cause a slump in sales of big-ticket items such as cars and home. Prime Minister Shinzo Abe has twice postponed the tax hike after the last increase from 5 percent in 2014 dealt a blow to private consumption, which accounts for about 60 percent of the economy. To prevent a pullback in demand after the tax hike, the government may consider large fiscal spending later when it draws up its budget for next year, government sources said. "One option may be to greatly reduce or abolish the automobile purchase tax," one of the government sources said. The government is also considering cuts in the automobile tax and automobile weight tax to help car buyers, the source added. Reporting by Izumi Nakagawa and Tetsushi KajimotoRelated Video: Image Credit: Getty Government/Legal Isuzu Mazda Mitsubishi Nissan Subaru Suzuki Toyota Trump Trump tariffs trade