No Load Consumption of Electric Car

https://www.matec-conferences.org/articles/matecconf/pdf/2017/47/matecconf_bultrans2017_06002.pdf

https://www.researchgate.net/publication/314301528_Measurement_of_power_loss_during_electric_vehicle_charging_and_discharging

Would there be again in efficiency if a wind powered alternator were installed in the wind stream of the vehicle,or would the added load consume more than it generated.?I am sure it would depend on the positioning of the generator and the prevailing direction of the wind to some degree.

There is plenty of back draft created by large trucks that is wasted.

Why not recover some of it?

ALL generators/alternators consume more than they generate. Tha added air friction/resistance would cause more losses than the small amount of power generated.

I know that,but I am talking about wasted energy that is creating turbulence behind the vehicle.

Some large OTR trucking companies have redesigned the back of their trailers to give a "push" in the same direction as travel,but still they are not using all of the turbulence generated.

In an electric vehicle,even a small recovery could be significant.

I'm thinking about perhaps straightener vanes to shape the air flow before sending it through a turbine to drive an alternator.

You'd have to be more specific about the meaning of "No load".

Nothing in the trunk? No passengers? No Driver? No wind load? No friction? Etc.

BU-1003a: Battery Aging in an Electric Vehicle (EV)

Battery Aging

Battery aging is complex and not always predicable. Usage is a product of age, cycle count, charge speed, load levels and temperature. The University of Munich (TUM) did extensive tests simulating batteries in an EV. The test battery is a NCA Li-ion in an 18650 package, the same cell found in a Tesla EV. The cathode material of this cell is nickel, cobalt and aluminum, the anode is graphite; 18640 outlines the cell size that is 16mm in diameter and 64mm in length (see BU-301a: Types of Battery Cells).

Calendar Aging

Figure 3 investigates capacity fade as part of calendar aging over 700 days at different state-of-charge (SoC) levels and temperatures.

Figure 3: Capacity fade by calendar aging with different charge end voltages and temperatures.
Lower charge voltages and cooler temperatures preserve the Li-ion battery when not in use.
^{Source: Technische Universität München (TUM) Document: Aging of Lithium-Ion Batteries in Electric Vehicles}

The largest permanent capacity losses are recorded at a high charge voltage, high SoC and elevated temperature. None of the Li-ion cells were charged to 4.20V/cell to reach full SoC, as done with a mobile phone battery because the capacity loss would be large. (See also BU-702: How to Store Batteries.). Additional information is in BU-808: How to Prolong Lithium-based Batteries, Table 3.

Easy.

Zero.

Were there to be anything other than <...No load...> then the answer would be "something other than zero".

Next!