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-   -   How do the heaters in electric cars work? (http://forums.pelicanparts.com/off-topic-discussions/815485-how-do-heaters-electric-cars-work.html)

dave 911 06-10-2014 07:03 AM

How do the heaters in electric cars work?
 
With no coolant system, what do the Tesla and Leaf use for heaters? Just curious, I saw a Tesla on the way in to work this morning and that thought popped in my head....

GH85Carrera 06-10-2014 07:12 AM

Just a wild guess.

The batteries themselves have a cooling system on many electric vehicles. Maybe that can provide heat to the cabin.

wdfifteen 06-10-2014 07:16 AM

I am so 20th Century. I would have said resistance heaters. So, smart guy, without any IC engine to produce a vacuum, what makes the wipers go?

kaisen 06-10-2014 07:29 AM

Teslas have liquid cooled/heated battery packs that keep themselves at roughly room temperature, so there is a coolant supply that's always in the 70F range. Leafs do not have liquid cooling, so any heat is from a resistance heater. The Volt takes the Tesla model one step further and will start its ICE for a few minutes to get 185F coolant to heat the cabin if it's below 35F outside, and not plugged in.

flipper35 06-10-2014 07:30 AM

Where does the heat come from on an air (oil) cooled 911? I believe they also have resistance just like a space heater if the system doesn't give enough heat.

Patrick, the wiper are run from the vacuum pump just like the old Willys jeeps had. :)

cockerpunk 06-10-2014 07:33 AM

Quote:

Originally Posted by flipper35 (Post 8108906)
Where does the heat come from on an air (oil) cooled 911? I believe they also have resistance just like a space heater if the system doesn't give enough heat.

Patrick, the wiper are run from the vacuum pump just like the old Willys jeeps had. :)

old 911s have a heat exchanger in the exhaust. thats why they have such ridiculously powerful heat.

rick-l 06-10-2014 07:34 AM

I'm pretty sure it is a heat pump in a Tesla

VINMAN 06-10-2014 07:39 AM

Toasters....

rcooled 06-10-2014 07:47 AM

Quote:

Originally Posted by kaisen (Post 8108903)
...

I don't know anything about how EVs provide heat, but it's good to see kaisen posting here again SmileWavy

flipper35 06-10-2014 07:49 AM

+1

Porsche-O-Phile 06-10-2014 11:19 AM

Heat comes from the flames under the floorboards.

pksystems 06-10-2014 11:30 AM

They don't. Not very well at least.

There is a reason you don't see many/any in colder climates.

Range drops to nothing as soon as you need electric heat.

vash 06-10-2014 11:30 AM

^This.

Or warm pixie dust.


Sent via Jedi mind trick.

kaisen 06-10-2014 11:32 AM

Quote:

Originally Posted by pksystems (Post 8109323)
They don't. Not very well at least.

There is a reason you don't see many/any in colder climates.

Range drops to nothing as soon as you need electric heat.

I'm in a cold climate. There are tons of them here. If you can keep them plugged in, you can set the climate control to allow "shore power" to heat the car. Then when you drive off it's already warm and you're just maintaining the temp. If it's not plugged in and you need to warm with 100% battery power, you're going to have a limited range (Volt not withstanding).

cockerpunk 06-10-2014 11:34 AM

Quote:

Originally Posted by pksystems (Post 8109323)
They don't. Not very well at least.

There is a reason you don't see many/any in colder climates.

Range drops to nothing as soon as you need electric heat.

i see them all the time here in Minnesota. even in winter .... :confused:

rusnak 06-10-2014 11:41 AM

Quote:

Originally Posted by wdfifteen (Post 8108889)
i am so 20th century. I would have said resistance heaters. So, smart guy, without any ic engine to produce a vacuum, what makes the wipers go?

lol!

1979 930 06-10-2014 11:59 AM

ball bearings and 10/ 40 w oil !!https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcQ58m--7jb-dDsz14Tm6ybJeT2sOkCGuS3WGetOyzGl8NAgYEgT

foxpaws 06-10-2014 12:18 PM

Heated seats... not kidding. I have a Volt - and yes, if you heat the cabin on a cold day it drains the batteries, however, heating your butt is much more energy efficient. I have only had to deal with a couple of cold mornings since I had the car, and butt heating seemed to be adequate for the 28 temp outside. I am sure when I have to deal with -0 I will be using the heater....

rusnak 06-10-2014 12:20 PM

Hippie farts, really? Must be like old Cheerios and beer....

foxpaws 06-10-2014 12:56 PM

Had a friend with a 60s Elan - of course the heater was dicey.... he always joked - 'Just wrap a weasel around your neck - you'll be fine.'


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