Why doesn't Tesla have a blended braking system? A blended braking system could feed in more regen and have a more consistent one pedal driving experience.
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What's OBE? I still have to use the brake pedal when I'm at high SoC. There isn't enough regen. I think there are benefits in blended braking systems for both one and two pedal driving for reasons I listed above.GM used blended braking on the Chevy Volt (both Gen1 and Gen2 Volt design.) When you applied the brake pedal the Volt would use regenerative braking before applying the friction brakes. This worked seamlessly. The Volt did not support one pedal driving. With one pedal driving the advantage of blended braking is OBE because you rarely touch the brake pedal. Even without one pedal driving the stronger regenerative braking on the Tesla means you don't have to use the brake pedal until you are almost at a full stop.
What's OBE? I still have to use the brake pedal when I'm at high SoC. There isn't enough regen. I think there are benefits in blended braking systems for both one and two pedal driving for reasons I listed above.
overcome by events.What's OBE? I still have to use the brake pedal when I'm at high SoC. There isn't enough regen. I think there are benefits in blended braking systems for both one and two pedal driving for reasons I listed above.
Great explanation @jcanoe ! Thanks for that, really interesting. Since I charge to 85% every night that explains why I haven’t felt it. Also answers my questions on preconditioning.How it works is Tesla's battery management software limits the amount of regenerative braking energy that is allowed to flow into the battery. The battery cannot be charged or accept energy from regenerative braking when it is too cold. You start to see this effect when the temperature of the battery pack is lower than ~70F. The power display indicator on the center screen is a thin bar just below the speed indicator. When you see a series of dots on the power use indicator these are to inform that regenerative braking is limited. The reduction in regenerative braking becomes very noticeable when the temperature of the battery pack is lower than 50F.
When the temperature of the battery pack is above 70F the Tesla has full regenerative braking. Between 50F and 70F the Tesla vehicle has some regenerative braking. Below 50F there is very limited or no regenerative braking. Overnight, parked, the temperature of the battery pack in the Tesla will fall and be close to the ambient temperature in the garage or outside air temperature. You can minimize the reduction in regenerative braking by preconditioning the Tesla vehicle in colder weather. Preconditioning the Tesla vehicle will automatically warm the battery pack as well as warm the passenger cabin. In winter plan on preconditioning for at least 15 minutes or more before driving. The Tesla vehicle does not have to be plugged in to use the preconditioning feature however the battery must have at least a 20% state of charge. A typical preconditioning cycle in winter will use 2% of the battery charge (maybe a bit more) depending on how cold it is and long the preconditioning is left running before you drive.
When the battery pack is charged over 85% then regenerative braking is limited. When the battery fully charged or almost fully charged then no regenerative braking is available until you have used some of the battery charge.
Thanks, I didn't know that. I had a g2 Volt before my M3 and it scared me once until I learned that regen didn't work with a full charge. I stopped and rebooted the car.More Regen~
In EVs I've driven with a blended brake system + one pedal driving, you could brush the brakes to have more regen. Theoretically you could put your systems full regen potential in one pedal driving, but it will be not as smooth and very alarming if you take your foot off the pedal.
Consistent One-Pedal Driving~
With good blended braking algorithm, you'll be able to do one-pedal driving at 100% charge. As of right now, the car would coast in high SoC and require you to use the brake pedal. This is not one-pedal driving. In a blended system, the car will apply the physical brakes for you as you let off the go pedal. This could yield a more consistent performance regardless what SoC you're in.