Battery based electric vehicles of today and tomorrow.

[Gale Hawkins]

Wouldn't there be three motors running to make cool air? Compressor, Evaporator and Condensor Fans? That seems like a lot of electrical energy.

Yes there is a lot of electrical energy in a 400 volt 630 pound battery.

 

[Grumpycat]

smart to have smaller pump and more efficient than running whole engine for sure.

It also means the air conditioner compressor runs at the speed it needs to run in traffic or on interstate or soccer mom mode. Tesla and Prius use motor controllers to run the speed needed.

Perhaps best of all it means the compressor and motor can be sealed in a can just like a refrigerator or home HVAC. No shaft seals to leak coolant.

 

[Industrial Toys]

In this day and age, you would think that would be WAY too practical. MAYBE with a complex electronic/computer module in the same envelope. THEN, you get to replace the Motor AND Compressor when the electronics go pooof!

Just got off the phone with a friend. He is having a terrible time trying to install an Inverter and extra batteries on a FORD POLICE EXPLORER, HYBRID!

 

[Grumpycat]

Wouldn't there be three motors running to make cool air? Compressor, Evaporator and Condensor Fans? That seems like a lot of electrical energy.

No more than has to be pulled from engine to run air conditioning.

My Model S draws 20 kW from battery at 70 MPH. That is like 80A from a 240VAC outlet.

 

[Industrial Toys]

I realize that. It just sounded like someone thought the compressor load was all that was required to make cool air.

 

[Gale Hawkins]

I realize that. It just sounded like someone thought the compressor load was all that was required to make cool air.

What is really cool I mean warm is in I think 2013 Nissan went with heat pumps for SV and SL trim lines but the S trim still had the resistive heat system. In our 2016 SL I can start feeling heat in like 20 seconds when air temps are around 40F and in 45 seconds when down to 15-20F degrees.

In the case with Nissan the jury is still out as it and that was pre Covid. Ghosn said in Jan 2020 that Nissan would be in bankruptcy in 2022 so that was pre Covid. Nissan is hoping it is a case of sour grapes I expect. They are talking about coming out with a new EV that competes with Tesla Model 3 at the same price of the Model 3. I question there are enough Tesla haters to pull that off.

The car industry now: the future of the Renault-Nissan-Mitsubishi Alliance | Autocar

 

[Grumpycat]

What is really cool I mean warm is in I think 2013 Nissan went with heat pumps for SV and SL trim lines but the S trim still had the resistive heat system. In our 2016 SL I can start feeling heat in like 20 seconds when air temps are around 40F and in 45 seconds when down to 15-20F degrees.

2007 Prius had resistive heat in the air ducts of the windshield defrost. Windshield defrost mode was an option for quick heat.

2009 Mercedes-Benz ML320 Bluetec also had resistor strips to heat the cabin quicker. No mention in the owner's manual but one could smell them early in the season when burning off the summer's grime. Warm air within 1/4 mile.

Tesla doesn't use heat pump for heat. All heat comes from resistance heat strips. The Tesla app on smartphone can remotely control the HVAC, set temperature. Warm or cool the car before you get to it. Especially useful if the car is connected to the power grid as the power doesn't come from the battery.

My Subaru Outback has rear window style heat strips on the base of the windshield nominally to release frozen windshield wipers.

 

[sd455dan]

2007 Prius had resistive heat in the air ducts of the windshield defrost. Windshield defrost mode was an option for quick heat.

2009 Mercedes-Benz ML320 Bluetec also had resistor strips to heat the cabin quicker. No mention in the owner's manual but one could smell them early in the season when burning off the summer's grime. Warm air within 1/4 mile.

Tesla doesn't use heat pump for heat. All heat comes from resistance heat strips. The Tesla app on smartphone can remotely control the HVAC, set temperature. Warm or cool the car before you get to it. Especially useful if the car is connected to the power grid as the power doesn't come from the battery.

My Subaru Outback has rear window style heat strips on the base of the windshield nominally to release frozen windshield wipers.

Think things have changed with the model Y and it's new Octovalve and redesigned heat pump.

Tesla's Octovalve Enabled A Staggering 1?% Increase In Range For The Model Y

 

[sd455dan]

troubles with Fords Escape PHEV charging ... Sales halted and do not charge instruction due to Fire hazard


Ford Kuga/Escape PHEV Sales Halted For Fire Risk: Owners Told Not To Charge

 

[Gale Hawkins]

Sounds like all new EV makers have a learning curve to get past. I hate this because Europe is demanding EV's more and more.