torker wrote:Maybe dc/dc converter built into the controller.
Tiberius wrote:torker wrote:Maybe dc/dc converter built into the controller.
Are you thinking of a low power, step down DC-DC to generate a supply rail for other stuff, like a Battery Eliminator Circuit in the RC world? Or are you thinking of a high power step up one, so the controller/motor can work at higher voltages than the battery?
johnrobholmes wrote:BMS chips that plug into balance taps with parallel-able outputs that can trip a 5v cutoff! Like a bm6, but with the cutoff outputs isolated.
Or maybe a chip that can take bm6 outputs and opto isolate them.
Lock wrote:Bluetooth and WiMax interface for controller/bms/security/charger systems
mwkeefer wrote:Can we please have reliable and small high current and voltage controllers which work first?
liveforphysics wrote:A controller brain.
Something with an isolated and well stiffened switching supply to power itself (not more stupid voltage divider resistor circuits), and a separate isolated switching 5amp 8-10vdc supply to provide clean non-bouncy power to the gate drivers on the outboard external FET stage.
Something using a modern motor controller chip would be nice as well. No reason the same brain can't do brushed, brushless, sensored (encoder wheel capable as well), unsensored, and/or use sensors for starting then switching to unsensored for active timing control dependent on throttle position etc.
This would be the greatest boon that could befall DIY EV projects. I would also gladly help to fund creation of such a controller brain.
liveforphysics wrote: Mike- It's funny that we are both not-content with controllers, but doing opposite things to fix it. You're playing with controlling the infinion power stage from a different MCU. I find the infionion power stage to be a pitiful creation that gave up the ability to perform in favor of being as cheap as possible to mfg, but I use it's MCU as the brain to drive my own no compromise power stages. Just funny to see we are both working towards the same thing (a better controller), but flip-flopped in the way we are going towards it.
I should mail you a stack of the power stages from infionion boards, and you can mail me a stack of the MCU side of the boards.
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