BMS

YAVLiC - BMS blues

Last week the kit including the BMS arrived. No circuit or wiring diagrams, just a pile of parts. Hmmm...

The BMS consists of a module for each battery cell and a "control unit" if you can call it that.

The BMS components are from EV-Power. Here is a link: EV Power cell module.

YAVLiC - Got the bike now what?

After having been convinced by Matt Lacey's Li conversion videos that a Li conversion is quite managable, I started looking for a 2nd hand VX1.

By good fortune, I ended up with a VX1 from the former Australian Vectrix importer and distributor. The bike is ex-demo/showroom and I have been told it has done less than 500km. It has a few marks and the chrome plated surfaces have brown corrosion spots. The battery could find a new application as a zero-volt reference if it were not so heavy, and since the plan always was to convert to Lithium, I did not even attempt to revive it.

Electric Motorcycle Fire: Was It Battery or BMS Problem--Seeking Explanations

How can we determine if our electric motorcycle had a BMS? We imported 2 electric motorcycles in late 2010. They were ordered with a 5000W motor and 72V90AH LiFePO4 battery packs with a BMS. They were routinely charged and test ridden. One bike had about 500 miles. A few weeks ago, it was ridden 20 miles and parked. Approximately 50 minutes after the ignition was turned off, the bike burst into flames and was demolished. Fire marshall determined no signs of foul play. We trying to determine the cause. We are speculating that the battery pack was NOT LiFePO4.

Ordering Components

After talking to a fella at EV works about various components I have settled on parts for my bike.

Motor: This is the less complex and slightly more powerful out of the two 48V motors. http://www.evworks.com.au/index.php?product=MOT-MARS-ME0708

Can I run my LiFePO4 Battery with no BMS?

Hello,
I am a newbie who just purchased my first e-bike conversion kit. I picked up the Phoenix 5304 hub motor with a 40 amp controller. The battery been used is a duct tape 48v 20ah pack. I converted my bike and everything worked fine my first time out........until I started to smell smoke :(. I looked over the battery pack it was fine, not even warm. I then inspected the BMS which basically melted. The solder was dripping off the BMS like water!

I did some testing, and believe it or not the BMS still works. After my testing I decided to do the following.

sparc5's picture

Dream GreenSaver Charger - The GreenBMS

I'm moving this from a post to a blog to keep people up to date with my progress.

For those who haven't been following the threads I've posted to here are the problems I'm trying to solve:

1) Battery charging- Make sure our batteries live long and prosper.
2) Equalizing- Make sure they discharge at an equal rate so you're range isn't limited by your weakest battery.
3) Cost- Keep the price lower than the alternatives.
4) Patents- Must do this all without violating patents.

Subscribe to RSS - BMS


Who's online

There are currently 0 users online.

Who's new

  • Jacupp
  • micarr
  • mechnique
  • kushtsz
  • Daria

Customize This