Tesla BMS HV Isolation sensing question
Posted: Wed Dec 29, 2021 1:19 am
This is my first post in this forum, so let me know if I'm doing anything wrong.
I've been trying to understand how the Tesla model S senses if there is any isolation break from its HV system to chassi. In an youtube video video (link below), i found out that it uses a proposed method by Texas Instruments, however, I've been having trouble fully understanding it. On TI's Design Guide, there are two relays that connect the HV poles to chassi, but if I look at Tesla's BMS board it doesn't seem to have any. Anyone knows if there is a way to substitue both relays with something else, or maybe even a way of doing a continuous measurement (instead of discrete)?
Youtube Video:
https://www.youtube.com/watch?v=jEbeeP6 ... Ingineerix
TI's Design Guide:
https://www.ti.com/tool/TIDA-01513
I've been trying to understand how the Tesla model S senses if there is any isolation break from its HV system to chassi. In an youtube video video (link below), i found out that it uses a proposed method by Texas Instruments, however, I've been having trouble fully understanding it. On TI's Design Guide, there are two relays that connect the HV poles to chassi, but if I look at Tesla's BMS board it doesn't seem to have any. Anyone knows if there is a way to substitue both relays with something else, or maybe even a way of doing a continuous measurement (instead of discrete)?
Youtube Video:
https://www.youtube.com/watch?v=jEbeeP6 ... Ingineerix
TI's Design Guide:
https://www.ti.com/tool/TIDA-01513