HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
REGISTER   |   LOGIN   |   HELP
Page 1/5  >  >>
AnandY
User Rank
Gold
Envia litium-ion battery
AnandY   4/19/2013 7:42:45 AM
NO RATINGS
Envia Systems is doing a great job in liitium-ion battery development. The electric car industry faces two major challenges: the high cost of batteries and their limited range between charges. Envia Systems, a startup developed a rechargeable lithium-ion battery with an energy density of 400 watt-hours per kilogram, the highest "energy density" known. They claim that once the electric car is fully charged then car can run upto 300 miles.

Rob Spiegel
User Rank
Blogger
Image problems?
Rob Spiegel   4/19/2013 10:47:19 AM
NO RATINGS
Nice slide show, Chuck. lithium-ion batteries have come a long way, but for autos, they probably have an image problem -- cost and safety -- they have yet to overcome.

naperlou
User Rank
Blogger
Re: Envia litium-ion battery
naperlou   4/19/2013 11:48:31 AM
NO RATINGS
AnandY, actually the range depends on the weight of the car and the power of the motor. 

One of the other issues with batteries is the amount of time to charge them.  A large pack like the one you mention, may take hours to charge (unless you have a special charging station).  This is just another "problem" to be solved.

Cabe Atwell
User Rank
Blogger
Re: Envia litium-ion battery
Cabe Atwell   4/19/2013 4:36:15 PM
NO RATINGS
Looking at these batteries and their elaborate housings it hits me; how amazing that we can pull enough resources out of the earth to make it all. The resources seem endless, though I know they are not.

That Grid lithium battery must cost a fortune. Do you know the price?

C

Charles Murray
User Rank
Blogger
Re: Envia litium-ion battery
Charles Murray   4/19/2013 7:46:36 PM
NO RATINGS
These companies play the prices very close to the vest, Cabe. But if we do a little arithmetic, we can get in the ballpark. A 500-kWh battery at $1,000/kWh would be a half million dollars. If the battery costs are coming in lower, say $500/kWh, it would be $250,000.

Charles Murray
User Rank
Blogger
Re: Envia litium-ion battery
Charles Murray   4/19/2013 7:50:20 PM
NO RATINGS
There's a great deal of hope surrounding Envia's battery, AnandY. Admittedly, the battery business has a reputation for making big promises and not delivering, but this one has been promising enough to draw support from GM.

Totally_Lost
User Rank
Silver
Re: Image problems?
Totally_Lost   4/20/2013 3:59:24 PM
NO RATINGS
I think the safety side of your assertion is the most critical.

Consider that some day someone is going to decide these automobiles should be networked, and include a wifi connection or cell phone data connection in their design.

Then consider that some hacker acting in behalf of a non-state actor, decides to declare war by inserting a virus in automobiles firmware, to overheat the Li-Ion batteries at the 20th annivesry of the 9/11 attacks, causing concurrent massive fires on streets, on hiways, in parking structures, in home garages in most western countries. We then have battery fires, cascading into accidents for moving traffic, compounded by accidents and structure fires beyond our public safety services ability to respond.

Consider what happens if this same non-state actor targeted cell phones and portable computers with Li-Ion batteries at the same time.

Li-Ion batteries are bombs, with microprocessor controlled triggers.

This is not the worst of what can happen.

Totally_Lost
User Rank
Silver
Re: Image problems?
Totally_Lost   4/20/2013 4:43:45 PM
NO RATINGS
look at this 2 min into www.youtube.com/watch?v=SMy2_qNO2Y0

google "exploding li-ion batteries" for other resources

mrdon
User Rank
Gold
Re: Envia litium-ion battery
mrdon   4/20/2013 5:32:53 PM
NO RATINGS
Charles, I really enjoyed the slideshow of the various lithium-ion battery designs. We have definitely come a long way from the carbon-zinc battery. There's a lot of embedded intelligence in these designs to regulate the batteries output voltage and current under various electrical loads. The last  battery slide, I believe it was Bak, looks pretty radical. Again, thanks for taking us on this tour of lithium-ion battery technology. Again, great slides!!!

mrdon
User Rank
Gold
Re: Image problems?
mrdon   4/20/2013 5:44:53 PM
NO RATINGS
Totally_Lost, The lithium-ion youtube video brings a new perspective to charging and battery management circuits: Thank God we have them! Thanks for sharing that explosive piece of video. :)

Page 1/5  >  >>


Partner Zone
Latest Analysis
Eric Chesak created a sensor that can detect clouds, and it can also measure different sources of radiation.
Festo's BionicKangaroo combines pneumatic and electrical drive technology, plus very precise controls and condition monitoring. Like a real kangaroo, the BionicKangaroo robot harvests the kinetic energy of each takeoff and immediately uses it to power the next jump.
Practicing engineers have not heeded Yoda's words.
Design News and Digi-Key presents: Creating & Testing Your First RTOS Application Using MQX, a crash course that will look at defining a project, selecting a target processor, blocking code, defining tasks, completing code, and debugging.
Rockwell Automation recently unveiled a new safety relay that can be configured and integrated through existing software to program safety logic in devices.
More:Blogs|News
Design News Webinar Series
3/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
2/27/2014 11:00 a.m. California / 2:00 p.m. New York / 7:00 p.m. London
12/18/2013 Available On Demand
11/20/2013 Available On Demand
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Apr 21 - 25, Creating & Testing Your First RTOS Application Using MQX
SEMESTERS: 1  |  2  |  3  |  4  |  5


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: April 29 - Day 1
Sponsored by maxon precision motors
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service