To boost the range of pure electric vehicles (EVs), automakers need more onboard energy. To get more energy, they need bigger battery packs.
That's why manufacturers such as Tesla Motors and BYD Automobile are rolling out vehicles with massive EV battery packs. Tesla's Model S offers a choice of three packs -- 40kWh, 60kWh, and 85kWh. The smaller packs have approximately 5,000 cells in them, while the bigger packs incorporate 8,000 cells, and weigh up to 1,200 pounds. Similarly, BYD's highly anticipated e6 will use a 1,400lb, 71kWh battery.
Not all automakers are building such massive packs. Nissan's Leaf uses a 24kWh model, while the Chevy Volt employs a 16kWh battery, and the Toyota Prius PHV (a plug-in hybrid) incorporates a 5.2-kWh unit. We've collected photos of a wide range of EV battery packs, ranging from production to research devices.
Click on the photo below to scroll through our EV battery slideshow:
The electric DeLorean's battery bay houses the vehicle's electric motor and half of its battery pack. (Source: DeLorean Motor Co.)
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For a close-up look at GM's Chevy Volt, go to the Drive for Innovation site and follow the cross-country journey of EE Life editorial director, Brian Fuller. In the trip sponsored by Avnet Express, Fuller is taking the fire-engine-red Volt to innovation hubs across America, interviewing engineers, entrepreneurs, innovators, and students as he blogs his way across the country.
"the burning of coal which is indirectly responsible for thousands of deaths annually" - that's a low ball estimate and some are not so 'indirect'. So many people run off on this tangent - the problem is not the electrification of vehicles: the problem is dirty power generation and an industry that has been allowed to compete with exemptions to many environmental laws that othe industries must meet - even the auto industry. The current configuration of the US power industry is a choice not a necessity - there is always the opportunity to make other choices; there is even the opportunity to use coal much more efficiently and cleanly but then you have Republican fanboys that go entirely the other way proclaiming that the EPA and/or the environmental regulation should be scrapped. As it stands you have smog in Yosemite and Grand Canyon. Burning fossil fuels in motor vehicles is a very inefficient means of converting latent energy into motion: there are ways to improve on this but as you can see from comments by tucsonics and many others, it's all about what's cheapest and ignoring the fact that technology always rides an experience curve with the cost of a capability declining in proportion to cummulative sales - thank heaven for early adopters who choose value over cost. Dirty power is a choice made by every American: compare the reduction in emissions and improvements in fuel economy achieved by auto manufacturers as compared to the fossil fuel power sector over the last few decades - only one has made great advances; there is no excuse.
don't forget the waste heat which is a huge component of global climate change and the possibility of of a rupture, the potential for the crazies to make a dirty bomb if the radioactive material becomes readily available
The great thing about internal combustion engines is that one of the two reactants needed to create mechanical energy, namely oxygen, does not have to be stored in the vehicle - it's in the air. Battery power, on the other hand, requires that both reactants be stored. The result is the huge payload of batteries that must constantly be transported in the vehicle.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is