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Does D23 need to be implemented if we are using an XT90 Connector?STM32
Using the STM32L431KCU6 (the same one from Meghan’s CAN adapter circuit)
Some thoughts:
Still not exactly sure how the cell monitoring should be handled, a BMS chip is kinda what I’m thinking or at least some sort of cell monitoring device. An issue I have right now is component sourcing since digikey’s search is yielding some fraudulent results (I think links 1 & 2 for the BMS) since most of the ones that say they can support up to 6 cells (from analog devices) really only support 2 Li-ion (I’m assuming this is the type of battery WARG uses).
The LT6810 chip seems really ideal but it operates SPI/I2C and is the master node in this case (is this alright?!?! I would expect this kind of peripheral to be the slave node in this case)
Most cell monitoring ICs are rated for more than 6 cells (usually 8-12) so I don’t think that is a huge problem that some pins won’t be used (redundant not optimal :0), almost none of them have a CAN bus serial protocol so I’ll need to use an IC to convert the signals most likely
Also, in a perfect world I would use the same IC to monitor current and cell voltage but most chips I have found only operate on one of the functionalities
Using two separate IC’s (one for BMS one for current), how does data transmission work if both are sending data on the line?
Optimal IC I think would be the BQ7692, might be wrong here but I think it has current sense capabilities