Regen levels for BEV vehicles

[RonTCat]

Does anyone have a good source for the estimated regen levels for various BEV vehicles? Something like max power absorption, or typical recovery percentage for city driving, etc.

When I think of braking as a whole, the front wheels do the majority of the braking. If you don't have the drivetrain connected to the front wheels, like in a RWD only vehicle, you lose the majority of your regen energy opportunity, especially in any conditions other than light braking.

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[macchiaz-o]

Does anyone have a good source for the estimated regen levels for various BEV vehicles? Something like max power absorption, or typical recovery percentage for city driving, etc.

When I think of braking as a whole, the front wheels do the majority of the braking. If you don't have the drivetrain connected to the front wheels, like in a RWD only vehicle, you lose the majority of your regen energy opportunity, especially in any conditions other than light braking.

If the rear wheels are spinning and they aren't being supplied power by the battery, then they are spinning the motor that they are coaxial with.

Now the motor is a generator. The electrical power it generates can be converted from AC to DC and harvested back to the battery.

So I don't think the position of the motor is important here, assuming front and rear wheels are both connected to the ground and spinning the same.

 

[JamieGeek]

If the rear wheels are spinning and they are being supplied power by the battery, then they are spinning the motor that they are coaxial with.

Now the motor is a generator. The electrical power it generates can be converted from AC to DC and harvested back to the battery.

So I don't think the position of the motor is important here, assuming front and rear wheels are both connected to the ground and spinning the same.

That is true if the car is soley regenerating then, in that instance, the only thing stopping the car is the drive wheels.

 

[pt19713]

Does anyone have a good source for the estimated regen levels for various BEV vehicles? Something like max power absorption, or typical recovery percentage for city driving, etc.

This one could be tough because there are people that do a lot of highway, some that do mostly city, others that do mixed.

I don't know if other vehicles provide brake regen info but Teslas do not. In the Tesla, additional hardware to tap into the CAN bus is needed and an app is to display the data. That being said, here's a screenshot of my Model Y.

You can see the info over the last 520 miles, along with the 3585 miles. Over the last 520 miles, I've consumed 128 kWh, brake regen back 54.9 kWh, or 42.9%. This is approximately 160 highway miles, 360 city/mixed miles. The Y caps at 75 kW regen and with colder temps coming, there usually some limitations even with 15 minutes of pre-conditioning. I generally have my brake regen limited to 60 kW in the morning.

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