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Electric Vehicles, EV, hybrid, hybrid vehicles, clean energy, green power, solar power, wind power, Bloombox, home based power, fuel cell, wind generator, incentives, rebates, government, government policy

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Location: Courtenay, British Columbia, Canada

Thursday, February 08, 2007

Toyota NiMH Nickel Metal Hydride Battery

Newly developed modular metal casing for compact packaging and improved cooling
The Ni-MH battery used in Highlander Hybrid is packaged in the newly developed metal battery casing.

Although it is only 0.014? (240 cells) in volume, it can deliver high voltage of 288 V. The improved cooling performance reduces loss of efficiency due to heat generation, ensuring that the battery can supply required electric power to the motors at all times.

The battery Monitoring Unit manages discharge and recharging by the generator and motors to keep the charge level constant while the car is running.

Toyota Prius Toyota Highlander and more . . . .

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Friday, February 02, 2007

Gas engine vs Electric Motor or EV [vehicle]

Gas engines lose efficiency at every junction from drilling crude, pumping, refining, storage, tanker loading, transport, unloading , pumping at retail sales points and it burns at about 22% energy efficiency. [Ethanol has much lower efficieny and costs more, but does help displace some barrels of crude imports.]

Not so with electric engines:

[ Hydro power is derived from gravity pull of water through a turbine spinning a generator and fed directly by wire to your wall plug. Battery charging normally occurs from 1 to 6 am during off peak demand.]

When the power gets flipped on, the engine goes. Delivery of power to the engine is not as big of an issue. Most electrics also only have two gears, forward and reverse, so drivers don't get stumped by a mis-shift. Additionally, very little of the energy gets lost.

Mr. Wright, engineer of the X1-EV said . .
*Of the energy you take out of the wall, almost all of it ends up on the road,* he said. *They are so close to nearly perfect that there is no point in inventing anything else.*

This is the link

Electricity is also comparatively cheap. The X1 consumes about 220 watt-hours per mile in city driving. That's the equivalent of 170 miles per gallon: The vehicle's vanity license plate reads 170 MPGE.[+-42 MPl.]

It can be charged from a 110-volt wall socket and will be compatible with the faster chargers Tesla will bring to market.

The problem is the batteries, which effectively serve as the gas tank on an electric car. The 538-pound battery in the X1 can hold about the same amount of energy as three liters of gas.
As a result, electric cars can only travel so far without recharging. The EV1 from General Motors could only go 130 miles before it needed a recharge, and it needed a special charger. [ All drivers LOVED their EV-1s in spite of the short range. =TG]

The all-electric Xebra from ZAP doesn't go on the freeway. The Tesla Roadster, an electric sports car coming from Tesla Motors, can go 200 miles before its 6,831-cell lithium ion battery peters out.
The X1 can go around 100 miles under regular conditions and might only go 25 miles in racing conditions before it needs a recharge.

*Batteries are also intrinsically expensive things,* Wright said. *There's a lot of R&D involved.*

The *Better Battery* could come from Chevron , as they hold the patents [from Ovonics], for the *Large Format NiMH battery*. But, I suspect Chevron bought the rights in order to keep the efficient battery from cutting into fuel sales.

Rumours mention that the secretive German based firm, Eestor is onto a *Super Battery*. Question is; will the designer of the better new battery sell the rights to Exxon or Chevron for quick profits, or will they actually go into production? = TG

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