Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-17-2012, 10:02 AM   #61 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,585 Times in 1,553 Posts
Quote:
Originally Posted by Cobb View Post
Its very easy for me to make a 5 mile trip and end up driving 150 miles. Id have to return home and trade vehicles if I had purchased a leaf or some ev like vehicle. I guess that is where the volt comes in?
Yep, or the PHEV Prius, or C-Max Energi, or the soon to be PHEV Accord or Fusion Energi... Thankfully the choices are growing.


Quote:
I am leaving then on the trunk deck. This car is going to be my all year round car, including nasty winters so I want the batteries sealed from the elements.
Ah, I'm guessing you don't have a welder where you could just make a box and weld it into the chassis where the gas tank or spare tire well was.

__________________
Current project: A better alternator delete
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-17-2012, 10:38 AM   #62 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Massachusetts, USA
Posts: 442
Thanks: 1
Thanked 60 Times in 45 Posts
Quote:
Originally Posted by Daox View Post
Ah, I'm guessing you don't have a welder where you could just make a box and weld it into the chassis where the gas tank or spare tire well was.
I really thought about that, and I was about to but the cross frame is right in the way. I am also putting some insulation and airflow in the trunk to keep the batteries are a decent temperature all year round.
__________________
Civic EV http://2001-civic-ev.blogspot.com/
Solectria Force http://solectriaforce.blogspot.com/
  Reply With Quote
The Following User Says Thank You to TheSGC For This Useful Post:
Daox (09-17-2012)
Old 09-17-2012, 10:00 PM   #63 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Massachusetts, USA
Posts: 442
Thanks: 1
Thanked 60 Times in 45 Posts
Today I got the power cables finished and the battery installed.


Next I have to install the circuit breaker, then it's battery time! I am aiming for a Friday afternoon test drive, depending on how fast the batteries charge once I install them.

I still have to integrate the tachometer and design the circuits to run the A/C motor and heater system. I haven't looked out how the Honda electronic temperature controls work, so that's another project.
__________________
Civic EV http://2001-civic-ev.blogspot.com/
Solectria Force http://solectriaforce.blogspot.com/
  Reply With Quote
Old 09-18-2012, 08:23 AM   #64 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,585 Times in 1,553 Posts
Have you balanced your batteries yet?
__________________
Current project: A better alternator delete
  Reply With Quote
Old 09-18-2012, 09:24 AM   #65 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Massachusetts, USA
Posts: 442
Thanks: 1
Thanked 60 Times in 45 Posts
Quote:
Originally Posted by Daox View Post
Have you balanced your batteries yet?
Not yet, I am still deciding how to do it. My original plan was to just hook them up in series and let the MiniBMS do it's job. Right now they are within 0.004v, usually 0.002v from each other. I'm going to read through the MiniBMS manual and see what it says I should do.

I could use a bench power supply to charge them in series, but that would take days, if not weeks to charge.
__________________
Civic EV http://2001-civic-ev.blogspot.com/
Solectria Force http://solectriaforce.blogspot.com/
  Reply With Quote
Old 09-18-2012, 09:31 AM   #66 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,585 Times in 1,553 Posts
You really need to balance before using them in the car. .004V at rest turns into 1V difference at the far end of the charge/discharge curve quite fast. If they aren't balanced you'll start toasting cells. I've delt with it already in my PHEV kit on my Prius where my discharge rates are nowhere near what yours are.
__________________
Current project: A better alternator delete
  Reply With Quote
Old 09-18-2012, 10:31 AM   #67 (permalink)
Master EcoModder
 
Join Date: Apr 2009
Location: Charlton MA, USA
Posts: 463

EVVette - '71 Chevy Corvette Coupe
Thanks: 31
Thanked 183 Times in 94 Posts
David,

You can just wire them all in parallel and connect a CV power supply dialed in to what voltage you want and let it go for probably a day. Once the current tapers, to a specific value, you should be all set.

This is how I eventually plan to do my cells.....eventually....

-Adam
__________________
www.EVVette.com - 1971 Corvette Coupe Conversion to all Electric!
www.AdamBrunette.com - Machining, CNC, Robotics and Electronics.

You can download RTD Explorer for the Cougar controllers at www.EVVette.com
  Reply With Quote
The Following User Says Thank You to adamj12b For This Useful Post:
Cobb (09-19-2012)
Old 09-18-2012, 10:47 AM   #68 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,585 Times in 1,553 Posts
As long as you know how your setup works and you have provisions to protect the cells from overcharge and overdischarge you'll be fine. Its not like lead acid where you can just plunk them in and go.
__________________
Current project: A better alternator delete
  Reply With Quote
Old 09-18-2012, 08:53 PM   #69 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Massachusetts, USA
Posts: 442
Thanks: 1
Thanked 60 Times in 45 Posts
I think I am going to hook everything up and charge up the batteries with the MiniBMS active to it will shutdown the charger if a cell hits 3.6v. I am charging to 3.5v/cell so that gives me some room and if I need to balance more I will.

My problem is I only have a 3A power supply so that would take 169 days to top off! What I may end up doing is installing everything, charging up and if HVC becomes a problem, then balance with the batteries mostly charged.
__________________
Civic EV http://2001-civic-ev.blogspot.com/
Solectria Force http://solectriaforce.blogspot.com/
  Reply With Quote
Old 09-18-2012, 10:15 PM   #70 (permalink)
Administrator
 
Daox's Avatar
 
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203

CM400E - '81 Honda CM400E
90 day: 51.49 mpg (US)

Daox's Grey Prius - '04 Toyota Prius
Team Toyota
90 day: 49.53 mpg (US)

Daox's Insight - '00 Honda Insight
90 day: 64.33 mpg (US)

Swarthy - '14 Mitsubishi Mirage DE
Mitsubishi
90 day: 56.69 mpg (US)

Daox's Volt - '13 Chevrolet Volt
Thanks: 2,501
Thanked 2,585 Times in 1,553 Posts
What do you have to detect low state of charge? What about if a single cell goes low?

__________________
Current project: A better alternator delete
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com