Jaguar Discusses I-Pace’s Thermal Management System – Video

JUL 2 2017 BY MARK KANE 31

Jaguar has released a video about the thermal management system in its upcoming I-PACE all-electric SUV, with a reference to the Formula E.

Jaguar I-PACE Concept

As it turns out, the 90 kWh battery (LG Chem supplied cells) is maintained inside its optimum range of 15-30°C through liquid cooling – for best performances and longevity.

Advanced thermal management also combines various sources to the heat battery or interior.

Separately, the Jaguar I-PACE is equipped with a heat pump to limit energy usage for cabin comfort in the winter. According to the manufacturer, the heat pump is able to save up to 50 km (30 miles) of range.

Non-winter range is said to be more than 500 km (310 miles) under NEDC, or about 220+ miles in more of a real world setting.

“Controlling temperature is important for any car, but it is especially important for electric vehicles like I-PACE Concept and Jaguar’s I-TYPE Formula E race car. In racing, effective thermal management means drivers can compete faster and longer out on track. For road cars such as I-PACE Concept, drivers can gain up to 50km more range between charges”

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31 Comments on "Jaguar Discusses I-Pace’s Thermal Management System – Video"

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Pretty good, they didn’t get into specifics, but having a heat pump for a cabin heater will probably be a good deal – as long as the valving required doesn’t leak. Jaguar is having reliability problems, still.

GM starting with the 2011 volt weren’t too bad, and although still having an old-school resistance electric heater (as does my current BOLT ev), that said, they still are pretty efficient with energy use, at least in the summertime.

The battery, charger module, and inverter can be cooled in 3 ways to maximize savings.

1). Just recirculate glycol through the front radiators, and use the moving car to extract the heat.

2). Same as one but turn on radiator fan, if there’s not enough air movement through it.

3). Finally, use the refrigeration system to cool the Glycol in extremely hot climates, or during fast charging to extract the gobs of battery heat.

As battery packs get larger the benefit of a heat pump is less important and unlike a heat pump resistance heating works in all conditions. It will be interesting if the Model 3 uses a heat pump since so far even Tesla has avoided them.

If a car already has a compressor for cooling cabin air and the battery pack, that same compressor can be used in reverse to heat the cabin. It’s just a plumbing design problem, so I don’t know why other EV manufacturers choose a cheap resistance heater at their only heater rather than using the compressor that’s already installed as a heat pump.

However, as the ambient temperature drops, a heat pump becomes less efficient for heating, so a resistance heater can be switched on to augment the heat pump. This is how the i3 BEV, but not REx functions.

The temperature differential for cooling is a lot different that that required for heating. So the compressor demands are drastically different. So the same compressor used for cooling cannot be used for heating.

“Same compressor cannot be used for cooling and heating”.

Show me one heat pump that uses a different compressor for heating than for cooling.

Even varying compressor cubic feet/minute (cubic metres if your prefer) is handled with the variable frequency semi-hermetic compressors ubiquitous today.

Where did you get the idea that they were different?

The i3 REx gets the “crude crown”, for exclusively heating with resistance on the battery, as hot coolant from the liquid-cooled range extender never sees the cabin.

For the Volt, I always go back to it taking .1 gallon to completely toast the cabin. Being able to be selective about its REx use can balance how to most efficiently use the battery. I’m not sure if Volt 2 works the same way. It could be faster, since Volt 2 features a coolant loop that goes through the exhaust manifold.

This is just one example of how this former German car die-hard (Kolbenschmidt, Mahle, Bilstein, yada..) came to see the Americans as leaders of automotive power-trains. They aren’t distracted from the function their cars serve.

From many different angles, the GEN 1 voltec cars (2011-15 VOlts, 2014-16 ELR) were very impressive vehicles even though the initial complaint was how totally old-fashioned they were.

Without any shaming necessary, the GM designs were from the start very efficient with their electricity usage, and also not bad with their gasoline consumption – however the prime directive apparently was high reliability and very low life-cycle cost.

Re: the I3 REX, I still have yet to see a test drive of the car’s battery drained and its performance with the Heater on HIGH, something that would be everyday operation during the wintertime for where I live.

Off topic maybe, but I find the iPace to be so much more compelling than a Model X, or S. I think this could be serious competition for Tesla is Jaguar gets their act together in marketing and sales. Looks good so far.

At 210 range, the iPace is going to be for display purposes only.

Unfortunately it looks like Audi’s eQuattro is going the same low range route.

Makes no sense with Tesla at 295 with a 100 kWh. You’d think Audi and Jaguar would be around 250 mile range with the 90 kWh battery pack.

Oh well…hopefully Bolt will come out with an AWD (with dynamic cruise, power driver seat) update in 2018 and smoke them all with 240 mile range and $50K pricing.

Not everyone wants a Tesla…

This is going to be a compelling offering. That said Jags reliability issues would concern me. Heck basically almost of all the EV offerings are from companies that have known reliability issues!!!!

I was looking forward to the Audi eQuattro, AWD, hatchback, better fit and finish and around $65K but I think it had the same 300 mile EU rating which, as noted in this article about the iPace, translates to 220 miles for US EPA range.

That’s really low end of the range and I’d be leery of EV with a range that low. Bolt’s 238 is probably the floor.

It should rather be in the ~270 mile range. Where you get 210 and the article 220 from I don’t know.

Anyway, it is about more than just range.

It is good that there are more and more options in different price ranges and for different tastes and needs.

Interestingly, the automaker has now confirmed “a targeted range of approximately 220 miles on EPA test cycles”.

I, for one, can’t wait to see more competition. Whether the range is ~220 or ~300 miles 🙂

+1 100 to 200 miles was what needed to happen for EVs. 200 to 300 is gravy.

The laymen in my life, asking this “EV guy” questions, seem to get that its the 200+ mile cars where it all starts to make sense. I might give up 40+ miles of range to get a better dash board, and buy from a company that doesn’t eschew driving, or whatever the reason may be.

I suspect the choice is between great aerodynamics vs. rear seat headroom and cargo capacity. Tesla has chosen aerodynamics and thus a longer range whereas Jaguar has chosen better rear seat headroom and cargo capacity at the expense of aerodynamics and range.

You forget price tags. Model X 100 starts from $99,500. $82,500 base Model X 75 would be more comparable, but it may look too ugly for many. i-Pace may sell closer to $70k in the US.

We love our Bolt and leased it because we hope to get a 4WD in three years.

Right now we get around 270 miles range.

This vehicle compares against a Model 3 and upcoming Model Y. Unfortunately, it will carry a Model X price.

Better than a Model X, not so stupid doors.

Or front window 🙂

Seriously, this seems like what many (normal) people wanted the X to be. Little more range wouldn’t hurt either.

Why people are so enamored with “SUVs” is beyond me. This thing is no more “Sporty” or “Utility” than the equivalent footprint sedan.

Those of us over 6′ tall despise modern sedans. Can’t fit me or half my friends in the rear seat due to headroom. I just don’t get the point of them.

SUV or wagon shape also carries much more stuff in a vehicle that can be both narrower and shorter. I live in the city, and spend time in the mountains, so need the smallest footprint that can carry the most stuff.

I guess that’s whey there is more than 1 type of vehicle for us to choose from.

Nowhere was it stated that the temperature is kept between 15 and 35 degrees Celsius. Learn to be a tiny bit skeptical before reporting your misunderstandings!

Obviously the video is designed to lead the viewer to that impression. But what was actually stated was that this was the IDEAL range for the cells. A bit later, the dude subtly shifts the wording and says the system always keeps the pack within the REQUIRED range. Nothing concrete at all was said about what it means.

This is how marketers (and hypnotists) work – they play word games that play tricks on your mind.

15-30 actually was the ideal temperature range. But the point is unaltered of course.

Marketers, hypnotists, magicians, and politicians.

That coy shift in words is what I call the “Semantic Swindle.” It’s the linguistic version of theft.

Still, I am excited by the new Jaguar I-Pace.

Ya ya.
A heat pump in a car in 2017 is really cool. I am blown away
This also looks amazing compared to the12Volt toy car my kid has.

I was thinking the same thing…since when a heat pump is latest tech? The video really says nothing impressive.

Still, i love the car. Saw it in 2016 and it looked very good. I hope they keep the price down.


Ahem. Sorry. Of course Jaguars are known for their low pricing.

and its still a concept, I am still blowing away….