Originally Posted by y_p_w
The digital electronics will fail in spectacular fashion if the voltage drops. However, those are going to be powered off of a separate 12V system, which is going to have to stay operating or else all the controls are gone. And the actual electronics operate off of an even lower voltage.
But reading as to how the system works - yeah they do all sorts of things when the battery weakens. This states that some who take a Tesla to a track usually make sure it's fully charged for the highest performance. Make sense. It doesn't sound like a bad thing. It's just dealing with the reality.
https://forums.tesla.com/forum/forums/model-s-acceleration-slower-battery-depletes
Thank you again, I'm not sure if I am asking the question the right way or whether the EV industry is skirting it ( accidental or deliberate) so let me restate it
All motors have a point where they simply must have a minimum power ( voltage and amperage) to physically turn in a circle and deliver their rated HP and torque.
Ramping ( how fast they get there) is a different matter and with DC is almost always directly linked to the overall SOC of a "good battery" and that article you linked goes into that very well, again thank you.
I want to know ( if the info is available, known or published) what the cut off is where the drive motor ( prime mover) simply will not function to BHP design. ( it simply doesn't have enough power to turn)
This would be assumed to be a fully loaded and weighed down application as a service vehicle with payload. ( maybe not the race car or road trip application)
Since we have been posting I have looked a bit and it seems this scenario is not adequately covered ( at least not that I can find)- I see all kinds of things talking around it but not directly addressing it.
Whatever "that point" is ( assuming a good battery and functional EV), is the "anchor point" for all fitness for purpose testing for general use.
It would determine minimum charge, load testing, fully loaded ranges, charge times and a whole lot more.
Do you know where any of this type of information is? ( or who might)
Thanks again
The digital electronics will fail in spectacular fashion if the voltage drops. However, those are going to be powered off of a separate 12V system, which is going to have to stay operating or else all the controls are gone. And the actual electronics operate off of an even lower voltage.
But reading as to how the system works - yeah they do all sorts of things when the battery weakens. This states that some who take a Tesla to a track usually make sure it's fully charged for the highest performance. Make sense. It doesn't sound like a bad thing. It's just dealing with the reality.
https://forums.tesla.com/forum/forums/model-s-acceleration-slower-battery-depletes
Thank you again, I'm not sure if I am asking the question the right way or whether the EV industry is skirting it ( accidental or deliberate) so let me restate it
All motors have a point where they simply must have a minimum power ( voltage and amperage) to physically turn in a circle and deliver their rated HP and torque.
Ramping ( how fast they get there) is a different matter and with DC is almost always directly linked to the overall SOC of a "good battery" and that article you linked goes into that very well, again thank you.
I want to know ( if the info is available, known or published) what the cut off is where the drive motor ( prime mover) simply will not function to BHP design. ( it simply doesn't have enough power to turn)
This would be assumed to be a fully loaded and weighed down application as a service vehicle with payload. ( maybe not the race car or road trip application)
Since we have been posting I have looked a bit and it seems this scenario is not adequately covered ( at least not that I can find)- I see all kinds of things talking around it but not directly addressing it.
Whatever "that point" is ( assuming a good battery and functional EV), is the "anchor point" for all fitness for purpose testing for general use.
It would determine minimum charge, load testing, fully loaded ranges, charge times and a whole lot more.
Do you know where any of this type of information is? ( or who might)
Thanks again