Lainaus Alkujaan tämän lähetti Seagull Katso viesti
@ troh:
Oh, yes, an integrated balancer and protection circuit would really cool... Let us know when you get that done
Well, easyest way to do this is to use readymade and tested circuits. Just combine Tobbys safety circuit and Suzannes LiPo balancer (my previous message has the link to balancer). After combining these circuits and LiPo cells, you can charge the pack with virtually any power source. Charging is ready, when balancer circuits LEDs (all) starts to blink. Old packs refreshed by this electronics should be charged slowly at first time after update, but in future everthing should work with higher currents too. Safety circuit stops charging, when ready. Balancer takes care, that all cells are full. Then at discharge, safety circuit takes care, that discharge wont go too deep.

How ever, there is also other ways to implement the same functionality. E.g. AVR microcontroller could be utilised. If select a controller, that contains 8 channel AD (does not have to be fast) and PWM output, electornics can be implemented much more intelligent, or should I say elegant. I have not done the design yet and thus I need to use conditional words here. By having PWM output, charging can be done by flyback SMPS and get even more freedom of charging power source. Also user interface can be improved by having clear LED-blinker to indicate full charge and balancing functions. And due to LiPo:s discharge current properties, also fuel gauge could be done. This all requires little HW design and bit more SW code. I think, there exist knowledge to get microcontrollers, to do HW design and to do SW coding. The barrier comes by time. Dont start waiting yet.