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If Your Electric Car Runs Out of Power on the Highway ...
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.RC.:

--- Quote from: Siwastaja on January 02, 2024, 06:34:42 pm ---There is no fundamental technical problem charging using the on-board AC charger while driving.

--- End quote ---

It is not even a new idea.  There are countless videos of ICE cars driving around by women with a fuel filler handpiece and attached hose hanging out the cars fuel tank spout.
pickle9000:

--- Quote from: Andy Chee on January 02, 2024, 07:05:58 pm ---
--- Quote from: Siwastaja on January 02, 2024, 06:34:42 pm ---There is no fundamental technical problem charging using the on-board AC charger while driving.

--- End quote ---
I'd say the problem with charging while driving, is getting a practical amount of charge into the vehicle whilst driving.

For example, a household 2kW Level 1 charger will only add about 10km of range per hour of charging.  An 11kW Level 2 charger would add about 60km of range per hour of charging.  And then there's 100kW Level 3 chargers!

There's a big difference between a 2kW generator and a 3-phase 11kW generator, and attempting to shoehorn the latter into the back of a Tesla would be an entertaining, if pointless engineering challenge!

--- End quote ---

There are savings to be had.  Lets say you design a hybrid electric drive, smallish battery, smallish charger. Compared to a regular ICE, Regen, No transmission, smaller motor to offset the weight of the batteries. In a regular ICE vehicle the power plant has to account for the worst case situation driving up hill loaded.
Halcyon:

--- Quote from: EPAIII on January 02, 2024, 10:56:46 am ---Well correct me if I am wrong, but UPS devices have been functioning with pass through mode for decades now. The wall power charges the cells and the cells power an inverter that then powers the equipment, like a computer. If the commercial power fails the inverter and equipment never even sees a blip.

They charge most of the time and power the equipment all of the time. No down time for charging. No reason why a vehicle battery can not operate the same way.

--- End quote ---

Only the online models operate that way. Most (all?) cheaper and smaller capacity UPSs are generally the line-interactive type. The batteries are only brought into the circuit when mains is out of spec.
jonovid:
smells like business opportunities in selling compact lightweight liquid fuel generators for the trunk of EV's on long interstate journeys.
-profiting from EV range anxiety. a 1 or 2 hr emergency suitcase style of recharge generator with an EV recharge adapter . 
the engineering challenge is in safety removing the gasoline smell from the generator unit when not in use.  :popcorn:
Andy Chee:

--- Quote from: pickle9000 on January 02, 2024, 09:29:30 pm ---
--- Quote from: Andy Chee on January 02, 2024, 07:05:58 pm ---
--- Quote from: Siwastaja on January 02, 2024, 06:34:42 pm ---There is no fundamental technical problem charging using the on-board AC charger while driving.

--- End quote ---
I'd say the problem with charging while driving, is getting a practical amount of charge into the vehicle whilst driving.

For example, a household 2kW Level 1 charger will only add about 10km of range per hour of charging.  An 11kW Level 2 charger would add about 60km of range per hour of charging.  And then there's 100kW Level 3 chargers!

There's a big difference between a 2kW generator and a 3-phase 11kW generator, and attempting to shoehorn the latter into the back of a Tesla would be an entertaining, if pointless engineering challenge!

--- End quote ---

There are savings to be had.  Lets say you design a hybrid electric drive, smallish battery, smallish charger. Compared to a regular ICE, Regen, No transmission, smaller motor to offset the weight of the batteries. In a regular ICE vehicle the power plant has to account for the worst case situation driving up hill loaded.

--- End quote ---
The savings are imaginary.  The effort and expense spent on re-engineering an existing EV into a series hybrid, would be better spent on purchasing a hybrid vehicle in the first place!

That being said, personal vehicle preference and customisation does come into play here.  If your dream vehicle model only comes in EV version and you really need a hybrid for practical purposes, then a custom conversion could be an option.  After all, there are performance modifications and engine swaps done with ICE all the time, so why not EV and hybrids?
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