Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-08-2017, 07:49 PM   #1 (permalink)
Aero Deshi
 
ChazInMT's Avatar
 
Join Date: Jan 2010
Location: Vero Beach, FL
Posts: 1,034

MagMetalCivic - '04 Honda Civic Sedan EX
Last 3: 34.25 mpg (US)
Thanks: 423
Thanked 623 Times in 338 Posts
Another Step Towards All of Us Driving E-Cars....Don't Buy GigaFactory Stock Yet.

Found THIS hot article today in Science Daily. Golly, it sounds impressive, I've always wondered why we need Tootsie Roll sized batteries and have to weld em all up. The article describes how a German company is figuring out how to make batteries that are sheets instead of tubes.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-08-2017, 08:34 PM   #2 (permalink)
V8 guy
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 4,506

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)
Thanks: 98
Thanked 1,017 Times in 742 Posts
My now obsolete AMP20 LiFePO4 cells are flat like sheets.
Then let me guess they want to roll the sheets into cylinders too?
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
  Reply With Quote
Old 05-08-2017, 09:55 PM   #3 (permalink)
Master EcoModder
 
Join Date: Sep 2012
Location: Victoria, BC
Posts: 442

Topoff - '92 Geo Metro LSi
90 day: 48.54 mpg (US)

'91 Miata - '91 Mazda Miata
90 day: 26.85 mpg (US)

'86 Fiero GT - '86 Pontiac Fiero GT

Purple Penny Pincher - '95 Pontiac Firefly Base
90 day: 38.91 mpg (US)

Jett-Black - '01 Volkswagen Jetta
90 day: 39.32 mpg (US)
Thanks: 25
Thanked 132 Times in 97 Posts
Quote:
Originally Posted by ChazInMT View Post
I've always wondered why we need Tootsie Roll sized batteries and have to weld em all up.
Affordability, I would presume. It was a lot easier/cheaper to start building Teslas with off-the-shelf batteries than to spend $$ reinventing the wheel.

I'm a bit surprised they're still doing it the same way after all this time.
__________________

  Reply With Quote
Old 05-08-2017, 10:54 PM   #4 (permalink)
Growin a stash
 
Join Date: Jun 2014
Location: Austin TX
Posts: 399
Thanks: 209
Thanked 123 Times in 95 Posts
There are some other considerations. Cooling channels and structural rigidity, off the top of my head.
__________________


2015 Nissan Leaf S
  Reply With Quote
Old 05-09-2017, 08:37 AM   #5 (permalink)
Lada Fan
 
Fingie's Avatar
 
Join Date: Jan 2015
Location: Finland
Posts: 559

"The War Wagon" Aka Yevina - '03 Vaz 2111 1.5 8V Injected
90 day: 31.05 mpg (US)
Thanks: 131
Thanked 47 Times in 39 Posts
AGM-batteries are basically sheets rolled up.
__________________
If you don't make any mistakes in your life,
life itself will be a f*ckup.



A V T O V A Z
  Reply With Quote
Old 05-09-2017, 12:42 PM   #6 (permalink)
V8 guy
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 4,506

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)
Thanks: 98
Thanked 1,017 Times in 742 Posts
Tesla may stick with the small cylindrical cells because of cooling.
Making a huge solid block of lithium batter would be great for power density but there would also be no way to cool it.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
  Reply With Quote
Old 05-09-2017, 01:17 PM   #7 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 9,985

CM400E - '81 Honda CM400E
90 day: 53.89 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 38.47 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)
Thanks: 1,547
Thanked 1,878 Times in 1,158 Posts
The Volt has flat cells. It has cooling plates that go between them for thermal management.



__________________
Current project: Automatically actuated grill block
  Reply With Quote
Old 05-09-2017, 01:55 PM   #8 (permalink)
V8 guy
 
oil pan 4's Avatar
 
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 4,506

Sub - '84 Chevy Diesel Suburban C10
SUV
90 day: 19.5 mpg (US)

camaro - '85 Chevy Camaro Z28

Riot - '03 Kia Rio POS
Team Hyundai
90 day: 30.21 mpg (US)

Bug - '01 VW Beetle GLSturbo
90 day: 26.43 mpg (US)

Sub2500 - '86 GMC Suburban C2500
90 day: 11.95 mpg (US)
Thanks: 98
Thanked 1,017 Times in 742 Posts
If the cooling plates are so great then why doesn't tesla use them?

Knowing chevy they will start leaking after about 10 to 15 years.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
  Reply With Quote
Old 05-09-2017, 02:56 PM   #9 (permalink)
EcoModding Apprentice
 
Join Date: Oct 2010
Location: Ivins UT
Posts: 199

the green machine :P - '97 Jeep Grand Cherokee ZJ
90 day: 20.92 mpg (US)

Thee s10 - '00 Chevy S10
90 day: 24.27 mpg (US)

Freedom - '05 Kawasaki Ninja 250EX
90 day: 75.55 mpg (US)
Thanks: 2
Thanked 21 Times in 19 Posts
Considering the charge and discharge rate of the batteries I really don't understand why they didn't add capacitors to take up a lot of the work from the batteries while driving!?!
  Reply With Quote
Old 05-09-2017, 03:17 PM   #10 (permalink)
EcoModding Lurker
 
Join Date: Mar 2017
Location: Kamloops, B.C
Posts: 22
Thanks: 0
Thanked 5 Times in 4 Posts
The volume isnt the problem. The problem is weight, making the batteries take up less volume wont help. EV's are typically weigh 500kg-1000kg more than gas counterparts so adding more weight isnt an option.

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com