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Lithium-Ion Batteries to Provide Grid Support in Hawaii

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patb2009
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Gold
Re: Better Than 18650s
patb2009   9/4/2014 7:28:43 PM
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I think a brilliant writer captured that quite nicely.


When I first heard Tesla was going to do a massively modular battery, I was

sure they would have terrible reliability challenges.  I have some familiarity with

massively parallel commodity Disk Drive storage and Supercomputers, and these

units have terrible issues with failure and failure management.


That tesla totally nailed the variation and Process QC, is a real achievement.

 

 

patb2009
User Rank
Gold
Re: Better Than 18650s
patb2009   9/4/2014 7:28:43 PM
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I think a brilliant writer captured that quite nicely.


When I first heard Tesla was going to do a massively modular battery, I was

sure they would have terrible reliability challenges.  I have some familiarity with

massively parallel commodity Disk Drive storage and Supercomputers, and these

units have terrible issues with failure and failure management.


That tesla totally nailed the variation and Process QC, is a real achievement.

 

 

Charles Murray
User Rank
Blogger
Re: Better Than 18650s
Charles Murray   9/4/2014 6:53:05 PM
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Absolutely true, patb2009. Sam Jaffe of Navigant Research said this about Tesla's welding process earlier this year:

"One of the reasons that other manufacturers ran screaming from the room when they thought about using little cylindrical cells is that the cells must be welded in two spots," Jaffe told us. "And they have to do that for each of the 7,000 or 8,000 cells."

Still, Tesla has found a way to accomplish that and will continue to take advantage of its manufacturing expertise in the Gigafactory. "In some ways, Tesla's true technological advance isn't about batteries," Jaffe said. "It's about a welding process that they've figured out how to do quickly, correctly, and cheaply."

http://www.designnews.com/author.asp?section_id=1366&doc_id=273118&page_number=2

Elizabeth M
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Re: Great idea
Elizabeth M   8/12/2014 9:52:48 AM
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Thanks for the clarification, Chuck. That's even better!

Charles Murray
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Re: Great idea
Charles Murray   8/11/2014 8:42:45 PM
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Apologies -- my earier comment was incorrect. California's goal is more aggressive than I remembered. It's 33% by 2020.

http://www.energy.ca.gov/33by2020/index.html

 

Elizabeth M
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Blogger
Re: Great idea
Elizabeth M   8/11/2014 6:55:16 AM
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I didn't realize California had that goal--it's a good one to strive for. And yes, you're right, storage of energy is sort of the next big hurdle to overcome to greater adoption of renewables in the grid. I've written a few stories about solar batteries and the work is promising.

Charles Murray
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Re: Great idea
Charles Murray   8/8/2014 5:58:56 PM
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Yes, Liz, they'll need a lot of installtions like this one if California hopes to get to 30% renewables by 2030. The more renewables we use, the more we need storage.

Elizabeth M
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Blogger
Great idea
Elizabeth M   8/6/2014 6:20:52 AM
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I really like how large-scale storage batteries are bringing renewables into the power grid. We need more installations like this!

gomnessta
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Silver
Re: Better Than 18650s
gomnessta   8/4/2014 5:14:46 PM
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Hello there Charles... while there are surely theories that other manufacturers use to support other formats for Lithium cells, I believe you'd get another more viable one from Tesla themselves: http://large.stanford.edu/publications/coal/references/docs/tesla.pdf

the link describes the Tesla Roadster's battery pack, smaller predecessor to the Model S. I think that Tesla did a phenomenal job of engineering all aspects of their source for stored energy. Reliability and above all, safety, were foremost in their minds - the future will prove whether they've succeeded, but the evidence looks pretty good in the short term. BTW - though I may disagree on this point, I love your coverage of vehicle technologies...

Mydesign
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Platinum
Li-ion Batteries for Grid support
Mydesign   8/4/2014 5:10:58 AM
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"The concept of battery-based grid storage has gained favor in recent years as more utilities look to renewable energy sources, such as wind and solar. Experts believe that those renewables will need some form of storage to make a bigger impact, essentially because their power is intermittent and therefore unpredictable."

Charles, storing and using at later point is a good option; but it can incurred energy loss also. First due to low efficiency of batteries only 80% of the batteries can be retrieved for reuse. Moreover for big projects, the requirements of batteries are larger in number.

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