hbleaf
Member
Not sure if this is correct forum but I wanted to see if anyone here has answers to these ??s
Chademo is a current controlled specification as such its topology doesn't make voltage control necessary. Instead a large blocking diode prevents backfeed into charger and the power module is expected to come up to needed and asked for current request (via CAN).
From the SAE standard a Voltage control is needed. The SAE charger is expected to voltage match the pack voltage before contactors are closed to prevent in or outrush currents (ie stable v - v the same pack to charger).
These methods are very different and I'm wondering how charger manufactures will handle that in a combo device. I guess a charger could be made to do both and software mechanisms could decide which method to deploy based on which charge cord is selected by the user.
Steve
Chademo is a current controlled specification as such its topology doesn't make voltage control necessary. Instead a large blocking diode prevents backfeed into charger and the power module is expected to come up to needed and asked for current request (via CAN).
From the SAE standard a Voltage control is needed. The SAE charger is expected to voltage match the pack voltage before contactors are closed to prevent in or outrush currents (ie stable v - v the same pack to charger).
These methods are very different and I'm wondering how charger manufactures will handle that in a combo device. I guess a charger could be made to do both and software mechanisms could decide which method to deploy based on which charge cord is selected by the user.
Steve