Showing posts with label plug-in hybrids. Show all posts
Showing posts with label plug-in hybrids. Show all posts

Saturday, April 19, 2008

100 MPG - CalCars and the beauty of high-mileage ideas

By Jay Inslee and Bracken Hendricks Special to the Apollo News Service

To see the future of the American automobile, take a spin down to Corte Madera, California, and introduce yourself to the CalCars boys.

This group of rebels met one sunny day in April 2004 in the garage of a typical condominium ten miles north of the Golden Gate, determined to roll out a car that could be “fueled” by plugging it into a wall at night with a standard extension cord and run on gas when needed. It was a Toyota Prius when they started and a symbol of an American revolution in automobiles when they finished.

The group was led by Felix Kramer, an entrepreneur who had an idea as big as his mustache. In 2003, after selling his Internet start-up, he cast about for his next adventure and landed on an audacious quest: to revolutionize the auto industry.

He knew that gas-powered, internal combustion cars were destroying the atmosphere and deepening our addiction to oil, and that things had to change. He stumbled on the work of Andy Frank at the University of California at Davis and Bob Graham at the Electric Power Research Institute. They are brilliant inventors who had radically re-thought how to power a car and created a blueprint for the first hybrid you could charge on the grid. Kramer decided to build a mass market for this change.

“Our whole auto configuration was decided by just a very few people, a handful of big auto company execs and the government. They had fouled up,” he said. “It was time to expand the number of Americans who had a hand in this future. So I decided to build a large group of folks who would demand the production of a clean, efficient car. To do that, I knew we had to first build such a car. So that’s exactly what we did.”

A multi-talented group of innovators answered Kramer's Internet call. They met in a garage owned by one of the new members of the team. Then they put the Internet to work to generate “open source” ideas they could incorporate into the design. Two years and a thousand feet of wire later they had converted a 2004 Prius into a car capable of driving on nothing but electricity from the garage wall jack for its first twenty-five miles each day. Kramer's plug-in may be the first car ever built “over the Internet.”

Secret SwitchIt was not an easy project. They succeeded only after discovering a secret switch that had literally been hidden in the American version of the Prius hybrid, which allowed the car to run in an all-electric mode, never relying on the gasoline engine. That discovery triggered Felix’s revelation that if he could boost the battery capacity, he could create a hybrid with monstrous mileage. So they went to work with a collection of tools, $700 worth of old nickel hydride batteries, and a growing collection of car enthusiasts who hovered around the garage at all hours.

When they finally drove their number out of the driveway and down the street in September 2004, Kramer felt justifiable pride. “All kinds of people want this kind of car: people like generals who care about security; environmentalists who care about the planet; and municipalities who care about cost.

“But it seems the last people in the world to ‘get it’ are the big car companies,” Kramer added. “Now that our CalCars cars are on the road, and these cars are being built in various places around the country, our vision is going to force changes. That is now happening.”

Plug-in, Second GenerationIt sure is. Kramer now has been tooling around California for 15,000 happy miles in his second-generation plug-in. It uses lithium ion batteries, gets a hundred miles per gallon of gas, and costs one cent a mile to run. Compare that to nine cents a mile to fuel a typical car with just gas. It is a miser of a car.

Kramer owns the first plug-in hybrid ever commercially sold in America. Plug-in hybrids are not yet rolling off assembly lines, but custom conversions like Kramer’s — built by EnergyCS, a small start-up in California that is beginning to make plug-in conversions available to the public — are being sought by an ever-growing market. Many more will follow.

Kramer takes joy in the car’s simplicity. He plugs a 19-inch cord in the rear bumper into a standard extension cord in his garage at night. Tooling around town, he is in all-electric mode for the first twenty-five quiet miles, covering the majority of his commutes gasoline free. He delights when he goes into forums of energy experts and shows them the little cord he uses.

“This is all the infrastructure we need to remake our car world,” he says. “We don’t have to build huge infrastructure for hydrogen. We can just ship clean electricity over the wires.”

What’s more, Kramer can smile as he drives, because with every mile he is saving CO2 emissions. He says, “When the car is in all-electric mode, it is putting out 60 percent less CO2 than a normal gas car, even taking into consideration all the CO2 coming out of the stacks of the plants that generate the electricity. Even if we never improve our electrical grid a bit, and even if people drive way more than the batteries can hold, some studies have shown this car can reduce CO2 by 36 percent. This is the best thing on the global warming front going.”

As an added bonus, Kramer’s wonder car has an attribute no mortal and few machines can claim—it gets better with age. “The electrical grid feeding my car is going to get cleaner over time,” he explains. “Instead of burning coal that releases carbon, we will be relying more and more on wind power, solar power, and geothermal. So the fuel—electricity—driving my car is going to get cleaner every year. How many cars do you know that get better the longer they are on the road?”

What About Detroit?Can Detroit deliver anything comparable?

We asked Tom and Ray Magliozzi, better known as Click and Clack, the Tappet Brothers, stars of the nationally syndicated radio talk show Car Talk. Their opinions are not exactly nuanced: “For thirty years now the companies have put everything they had into more power instead of more efficiency.”

Ray, who has a degree from MIT—as does Tom—and now runs Ray’s Garage in Cambridge, Massachusetts, elaborates: “The technology has been incredible, but it’s all about power. If the companies had put into efficiency what they have put into power, we would be driving cars getting sixty miles per gallon now. They have done fuel injection and computer-controlled engines but have not put those gains into efficiency. Any high schooler could have done better if they had wanted to.”

Indeed, Detroit cannot lead the way into the future by tinkering at the margins of its old business model. Nor can it get away with disingenuous promises of cleaner cars and ad campaigns that show gas-guzzling SUVs bringing us closer to nature. It will have to adopt the same spirit of innovation as Felix Kramer and his plug-in crew.

With General Motors now poised to release the plug-in hybrid electric Volt, it just might be that the revolution Kramer sought to provoke is starting to take hold. Only time will tell if the big three are ready to get serious about radical new designs that break our addiction to oil. But the technology is fast approaching that can help US auto companies make the leap beyond the small efficiency gains that have dominated recent fights, and finally launch us into a future of clean and efficient energy.

A National Security BenefitWhen plug-in technology is combined with a flex-fuel engine that can burn gas or biofuels, it can actually get vastly higher mileage per gallon of gas. Even without using biofuels, it reduces our dependence on foreign fuel, because 97 percent of the electricity it consumes is produced from domestic energy sources. Kramer’s car is virtually free of Saudi Arabian influence.

Excitement for hybrids is not confined to the road. Utilities salivate over the prospect of turning the storage capacity of plug-in batteries into an adjunct to the electrical grid. Power plants may soon be able to feed their juice into our car batteries at night when demand is lowest, using base electric load more efficiently and storing energy in our cars while they are parked for use during the day. In this way, our cars may one day serve to level out electrical supply and demand on the grid as we slumber.

Roger Duncan, vice president of Austin Energy, a Texas utility, is working to make plug-ins a regular feature of the grid. He has organized a massive national grassroots initiative called Plug-In Partners, which has demonstrated the demand for these cars with pledges from literally hundreds of cities, businesses, and non-profits from Chicago to Phoenix, from California Edison to the U.S. PIRGs (Public Interest Research Groups). Chicago is retrofitting 850 plug-in hybrids, and New York State is converting the 600 hybrids in its fleet to plug-ins.2 Several companies are already converting hybrids for commercial sale using the ideas of these pioneers.

A garage gave birth to Hewlett-Packard and the electronic age, not to mention rock and roll and the modern entertainment industry. A garage may also have given birth to the future of personal transportation and the age of the plug-in car.

Wednesday, September 5, 2007

Texas startup says it has batteries beat

AUSTIN, Texas - Millions of inventions pass quietly through the U.S. patent office each year. Patent No. 7,033,406 did, too, until energy insiders spotted six words in the filing that sounded like a death knell for the internal combustion engine.

An Austin-based startup called EEStor promised "technologies for replacement of electrochemical batteries," meaning a motorist could plug in a car for five minutes and drive 500 miles roundtrip between Dallas and Houston without gasoline.

By contrast, some plug-in hybrids on the horizon would require motorists to charge their cars in a wall outlet overnight and promise only 50 miles of gasoline-free commute. And the popular hybrids on the road today still depend heavily on fossil fuels.

"It's a paradigm shift," said Ian Clifford, chief executive of Toronto-based ZENN Motor Co., which has licensed EEStor's invention. "The Achilles' heel to the electric car industry has been energy storage. By all rights, this would make internal combustion engines unnecessary."

Clifford's company bought rights to EEStor's technology in August 2005 and expects EEStor to start shipping the battery replacement later this year for use in ZENN Motor's short-range, low-speed vehicles.

The technology also could help invigorate the renewable-energy sector by providing efficient, lightning-fast storage for solar power, or, on a small scale, a flash-charge for cell phones and laptops.

Skeptics, though, fear the claims stretch the bounds of existing technology to the point of alchemy.

"We've been trying to make this type of thing for 20 years and no one has been able to do it," said Robert Hebner, director of the University of Texas Center for Electromechanics.

"Depending on who you believe, they're at or beyond the limit of what is possible."

EEStor's secret ingredient is a material sandwiched between thousands of wafer-thin metal sheets, like a series of foil-and-paper gum wrappers stacked on top of each other. Charged particles stick to the metal sheets and move quickly across EEStor's proprietary material.

The result is an ultracapacitor, a battery-like device that stores and releases energy quickly.

Batteries rely on chemical reactions to store energy but can take hours to charge and release energy. The simplest capacitors found in computers and radios hold less energy but can charge or discharge instantly. Ultracapacitors take the best of both, stacking capacitors to increase capacity while maintaining the speed of simple capacitors.

Hebner said vehicles require bursts of energy to accelerate, a task better suited for capacitors than batteries.

"The idea of getting rid of the batteries and putting in capacitors is to get more power back and get it back faster," Hebner said.

But he said nothing close to EEStor's claim exists today.

For years, EEStor has tried to fly beneath the radar in the competitive industry for alternative energy, content with a phone-book listing and a handful of cryptic press releases.

Yet the speculation and skepticism have continued, fueled by the company's original assertion of making batteries obsolete — a claim that still resonates loudly for a company that rarely speaks, including declining an interview with The Associated Press.

The deal with ZENN Motor and a $3 million investment by the venture capital group Kleiner Perkins Caufield & Byers, which made big-payoff early bets on companies like Google Inc. and Amazon.com Inc., hint that EEStor may be on the edge of a breakthrough technology, a "game changer" as Clifford put it.

ZENN Motor's public reports show that it so far has invested $3.8 million in and has promised another $1.2 million if the ultracapacitor company meets a third-party testing standard and then delivers a product.

Clifford said his company consulted experts and did a "tremendous amount of due diligence" on EEStor's innovation.

EEStor's founders have a track record. Richard D. Weir and Carl Nelson worked on disk-storage technology at IBM Corp. in the 1990s before forming EEStor in 2001. The two have acquired dozens of patents over two decades.

Neil Dikeman of Jane Capital Partners, an investor in clean technologies, said the nearly $7 million investment in EEStor pales compared with other energy storage endeavors, where investment has averaged $50 million to $100 million.

Yet curiosity is unusually high, Dikeman said, thanks to the investment by a prominent venture capital group and EEStor's secretive nature.

"The EEStor claims are around a process that would be quite revolutionary if they can make it work," Dikeman said.

Previous attempts to improve ultracapacitors have focused on improving the metal sheets by increasing the surface area where charges can attach.

EEStor is instead creating better nonconductive material for use between the metal sheets, using a chemical compound called barium titanate. The question is whether the company can mass-produce it.

ZENN Motor pays EEStor for passing milestones in the production process, and chemical researchers say the strength and functionality of this material is the only thing standing between EEStor and the holy grail of energy-storage technology.

Joseph Perry and the other researchers he oversees at Georgia Tech have used the same material to double the amount of energy a capacitor can hold. Perry says EEstor seems to be claiming an improvement of more than 400-fold, yet increasing a capacitor's retention ability often results in decreased strength of the materials.

"They're not saying a lot about how they're making these things," Perry said. "With these materials (described in the patent), that is a challenging process to carry out in a defect-free fashion."

Perry is not alone in his doubts. An ultracapacitor industry leader, Maxwell Technologies Inc., has kept a wary eye on EEStor's claims and offers a laundry list of things that could go wrong.

Among other things, the ultracapacitors described in EEStor's patent operate at extremely high voltage, 10 times greater than those Maxwell manufactures, and won't work with regular wall outlets, said Maxwell spokesman Mike Sund. He said capacitors could crack while bouncing down the road, or slowly discharge after a dayslong stint in the airport parking lot, leaving the driver stranded.

Until EEStor produces a final product, Perry said he joins energy professionals and enthusiasts alike in waiting to see if the company can own up to its six-word promise and banish the battery to recycling bins around the world.

"I am skeptical but I'd be very happy to be proved wrong," Perry said.

By GRANT SLATER,
Associated Press Writer