Power in Flux

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Type: Posts; User: podolefsky

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    I did too. But, the new pack will be a cleaner...

    I did too. But, the new pack will be a cleaner look overall with its own style. Not to mention more range, power, and a smaller package.





    I'll put the 3D file up on grabcad once I've tested...
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    Update: -busbars and mid-pack fuse in place...

    Update:

    -busbars and mid-pack fuse in place
    -plastic pieces designed that are combo spacers / covers for openings in the cell casing
    -plastic covers for busbars / terminals
    -rubber pieces...
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    It has been LOOOOONG time since I had time to...

    It has been LOOOOONG time since I had time to work on the bike. About 3 years, which happens to be the age of my son. :cool:

    I finally got back to fitting the Leaf cells I bought a while back. I...
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    :cool:

    :cool:
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    You're not getting message 18FF50E5 back from the...

    You're not getting message 18FF50E5 back from the charger which means a bad CAN connection. Check wiring continuity.

    Sent from my SAMSUNG-SM-G930A using Tapatalk
  6. NICE!

    NICE!
  7. The Eltek will talk to anything that...

    The Eltek will talk to anything that sends/receives the correct CAN messages. They use standard CAN frames, so in principle you should be able to program another device to work with them. The Orion...
  8. Hmmm... Check with HPEVS. All their software for...

    Hmmm... Check with HPEVS. All their software for the last 4 years works with Orion, as far as I know.

    There's a way to turn BMS on with menu button programming instead of Curtis programmer. Read...
  9. It's in user settings, custom code from HPEVS so...

    It's in user settings, custom code from HPEVS so won't be in the Curtis manual. "BMS installed" should be on.

    7288
  10. Is BMS turned on in the controller programming?

    Is BMS turned on in the controller programming?
  11. Bummer. Reading a DC voltage won't tell you...

    Bummer.

    Reading a DC voltage won't tell you much since it's an oscillating signal.

    2 things to check:
    -are you sure the CAN bus is working on the BMS end? Test with something else, not going...
  12. You don't need to connect the ground on the...

    You don't need to connect the ground on the controller side. It's just the shield so having it on one side is sufficient.

    Make sure the BMS and controller are using the same baud rate (kbps). In...
  13. Induction motor motors are asynchronous so the...

    Induction motor motors are asynchronous so the stator field speed will be faster than the rotor. Field speed is 120*frequency / # of poles.
  14. Stator frequency....

    Stator frequency.
    https://en.m.wikipedia.org/wiki/Induction_motorhttps://en.m.wikipedia.org/wiki/Induction_motor
  15. The B&B CANOP is the standard solution for...

    The B&B CANOP is the standard solution for interfacing with a non-isolated Curtis and is recommended by HPEVS. The main issues are size and that it's not very rugged. The one you found on ebay looks...
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    A "48V" lithium battery will be around 58V fully...

    A "48V" lithium battery will be around 58V fully charged. That's why the 4834 allows up to 60V. A 48V contactor coil will handle the same range. You won't be able to use a "60V" lithium battery since...
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    Nice article. I use solder splices a lot. Much...

    Nice article.

    I use solder splices a lot. Much more convenient than separate soldering and heat shrink.

    http://www.cableorganizer.com/elelktralink-butt-splices/
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    Sticky: Wire the charger directly to the battery, not...

    Wire the charger directly to the battery, not through the contactor. It's actually better if the charger isn't connected to the controller when charging. If you want an extra safety let the BMS cut...
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    Fair enough. If it's promising and could become...

    Fair enough. If it's promising and could become commercially available then I care. Actually, even if it's just lab research I care because if nobody cares until something is on the market it will...
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    Based on research from Stanford and published in...

    Based on research from Stanford and published in Nature - which means it's legit. Viability of commercialization is an open question.
    ...
  21. Cells will sag more in the cold, but it shouldn't...

    Cells will sag more in the cold, but it shouldn't be very noticeable until you get below 40F. You also lose capacity in the cold, so if you didn't notice capacity loss then it shouldn't be cold...
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    It's the same for all controllers. To go 55...

    It's the same for all controllers.

    To go 55 you need, say, 5kW. The power required is just from rolling and air resistance, so it's independent of gearing (ignoring any small difference in...
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    If you change gearing, then the current and...

    If you change gearing, then the current and voltage change *motor side*. If you're at the same speed you're going to see basically the same current, voltage, and sag battery side. Since he could go...
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    The motor won't limit you to the continuous...

    The motor won't limit you to the continuous amperage. If you exceed it for long enough the motor will simply burn up. If you didn't burn up the motor, then it's probably the controller cutting back...
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    No problem. They're lithium polymer, the...

    No problem. They're lithium polymer, the electrolyte is fixed relative to the electrodes so you can mount them any direction.
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