Toyota tests plug-in hybrid car

Thread Tools
 
Search this Thread
 
  #21  
Old 07-28-2007, 11:14 PM
ken1784's Avatar
Pretty Darn Active Enthusiast
Join Date: Mar 2004
Location: Yokohama, JAPAN
Posts: 499
Default Re: Toyota tests plug-in hybrid car

Originally Posted by Pete4
Question to Ken: is this graph for original Prius, or second generation? And is there a difference?
The 8 level bar graph is for 2004-2007 Prius.
The 2001-2003 Prius has only 4 level bar graph, and it's control range seems the same, 40-80%.

Ken@Japan
 

Last edited by ken1784; 07-28-2007 at 11:17 PM.
  #22  
Old 07-29-2007, 10:52 AM
SPL's Avatar
SPL
SPL is offline
Ridiculously Active Enthusiast
Join Date: Aug 2006
Location: Waterloo, ON
Posts: 859
Default Re: Toyota tests plug-in hybrid car

Toyota's battery-charging algorithm is probably very complicated in order to correctly maintain its state of charge (SoC) inside their chosen range without suffering from any memory effect. Their patents on this are very detailed, and discuss many ways of monitoring and controlling it. ken1784's very interesting link shows that (at least for the Prius, and undoubtedly also for the TCH) the SoC display is decidedly nonlinear, in that fully 57% of the usable SoC is represented by bars #6 and 7 alone! No wonder the SoC display seems to spend most of its time in this range. This is probably also deliberate, so as not to alarm drivers by seeing the SoC continually going up and down. (This is rather like what they have done with the temperature gauge, which sits at the same reading for water temperatures from 60 to at least 90 degrees C.)

Stan
 
  #23  
Old 07-29-2007, 03:15 PM
czechkid's Avatar
Enthusiast
Join Date: Jul 2007
Location: Nevada
Posts: 6
Default Re: Toyota tests plug-in hybrid car

There is a promising new technology that should make all batteries obsolete.

http://www.sciencentral.com/articles...e_id=218392803
 
  #24  
Old 07-29-2007, 04:02 PM
Pete4's Avatar
Ridiculously Active Enthusiast
Join Date: Sep 2006
Posts: 558
Default Re: Toyota tests plug-in hybrid car

OMG, they stole my idea about using capacitors made from nanotubes I mentioned in msg#15, whom do I sue???
 
  #25  
Old 07-30-2007, 03:56 AM
rburt07's Avatar
Ridiculously Active Enthusiast
Join Date: Jun 2007
Location: Southern New Mexico
Posts: 1,312
Default Re: Toyota tests plug-in hybrid car

I read something about a place in Austin, Texas that converts the Prius to a plug-in. I'm not sure of the cost but they open the battery charge up. I'm not sure just how much. They also swap out the battery pack to a larger one. Reports of up to 125 mpg. After all a 10 amp charge running all night would not use that much electricity.
 
  #26  
Old 07-30-2007, 10:51 AM
chris_h's Avatar
Active Enthusiast
Join Date: Feb 2007
Location: Fair Oaks, CA
Posts: 173
Default Re: Toyota tests plug-in hybrid car

Originally Posted by SPL
chris_h — Yes, I'm saying that, from what I've read, the LiIon battery would have to use just half the charge fraction that a comparable NiMH battery could use. Like ken1784, I think the TCH's usable battery range (of 40%) is something like 40 - 80% of full charge. A comparable LiIon's usable range (of 20%) would then be something like 50 - 70% of its full charge.

Stan
Stan,

Thanks for that clarification.
 
  #27  
Old 07-30-2007, 06:21 PM
ken1784's Avatar
Pretty Darn Active Enthusiast
Join Date: Mar 2004
Location: Yokohama, JAPAN
Posts: 499
Default Re: Toyota tests plug-in hybrid car

Originally Posted by SPL
chris_h — Yes, I'm saying that, from what I've read, the LiIon battery would have to use just half the charge fraction that a comparable NiMH battery could use. Like ken1784, I think the TCH's usable battery range (of 40%) is something like 40 - 80% of full charge. A comparable LiIon's usable range (of 20%) would then be something like 50 - 70% of its full charge.

Stan
IMHO, it is easier to monitor the SOC of Li-ion than NiMH's.
So, my bet is the Li-ion will be used 30-90% range. We'll see sometime in 2010.

Ken@Japan
 
Related Topics
Thread
Topic Starter
Forum
Replies
Last Post
Curated Content Editor
Journalism & The Media
0
02-20-2014 05:00 AM
Jason
Hybrid & Related News
5
03-26-2008 02:24 PM
Jason
Hybrid & Related News
18
08-28-2007 09:29 AM
Jason
Hybrid & Related News
0
09-03-2004 04:15 PM



Quick Reply: Toyota tests plug-in hybrid car


Contact Us -

  • Manage Preferences
  • Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Your Privacy Choices -

    When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.

    © 2024 MH Sub I, LLC dba Internet Brands


    All times are GMT -7. The time now is 11:31 PM.