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Communication protocol between DC fast charger and EV BMS



Hi,

I am working on the design of an external charger for EV batteries. Specifically in case of DC fast charge: I need to know when the external charger communicates with EV BMS, what information about the EV battery is shared with the external charger. Min/Max current, Min/Max voltages, charging profile etc. so that the external charger can estimate battery SOC, define charging profile, know when to stop charging and the charging limits etc.

What standard I need to review to find the answer to the above questions. Or any helpful information is appreciated,

Thank you,

I was referred to this forum from below thread:

(+) BQ79731-Q1: Using BQ79731-Q1 in an external Battery Charger - Power management forum - Power management - TI E2E support forums