Tesla (TSLA) engineers reduce cold-weather range loss in its EVs

Heat Pump Makes Your Tesla Even More Efficient

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Electric Vehicles traditionally have a bad reputation when it comes to performance and range in cold weather conditions. Tesla vehicles were no different before the automaker found a way to overcome this obstacle.

When Tesla (TSLA) launched its Model Y midsize compact electric SUV in 2020, the company integrated the Heat Pump technology into its vehicles for the first time. With the success of the heat pump in the Model Y, the technology transitioned to the entire Tesla vehicle lineup over time. Even the newly-launched Cybertruck has a heat pump in it.

Yesterday I received an email from Tesla titled, “Our Engineers Reduced Cold-Weather Range Loss”. The contents of the email showed pictures of the heat pump, its 3D visualization, and a link to a video in which Tesla shows how the company achieved cold-weather improvements to minimize range loss (watch below).

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3D illustration of a Tesla Heat Pump installed behind the vehicle's front trunk space (frunk).
3D illustration of a Tesla Heat Pump installed behind the vehicle’s front trunk space (frunk). Credit: Courtesy of Tesla, Inc.

The Tesla email states:

Heat Pump Makes Your Tesla Even More Efficient

EVs tend to lose range and charge slowly in cold weather. So we engineered a heat pump that redistributes the heat generated by the battery and powertrain while driving to make your vehicle more efficient in cold temperatures. This allows your vehicle to conserve energy while improving range and charging speed.

“EVs get a bad reputation in cold weather. They’re known for running out of range super quickly. They charge too slowly,” a Tesla engineer explained the reason for the innovation of the heat pump. “Tesla heat pump is about changing all those notions,” he said.

The Vice President of Vehicle Engineering at Tesla Lars Moravy has also been featured in this video. “The easiest way to think about a heat pump is like an air conditioner in reverse,” Lars said.

Tesla’s heat pump does not only warm up the vehicle’s battery pack to maximize the range efficiency. It is also used for warming up the occupant’s cabin in cold weather conditions.

A heat pump system in a vehicle is not an entirely new thing. Tesla has made several innovations in-house to maximize its efficiency in electric vehicles. Tesla needed to create a compact design for its heat pump, otherwise, the front-trunk (frunk) luggage capacity would have been compromised. The automaker’s engineering team succeeded in achieving both — simplified design and optimal functionality.

Sandy Munro sums up his analysis on the Tesla Model Y teardown.
Above image: Teardown of a Tesla Model Y frunk shows us the installed heat pump and other components of the vehicle. Credit: MunroLive.com.
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Tesla’s heat pump has an ingenious component in it called the OctoValve. Vehicle teardown expert Sandy Munro discussed the heat pump and OctoValve in detail when he tore down a Tesla Model Y in 2020. Together with other parts, Tesla is now calling it “Super Manifold”.

Tesla has significantly reduced the number of components required to create a heat pump. Instead of 15-20 different components, Tesla has made it into a single assembly. This simplifaction is very similar to the Starship Raptor V2 engine which reduced complexity and number of components from its previous generation Raptor engine.

“Model Y heat pump is some of the best engineering I’ve seen in a while,” Tesla’s Elon Musk stated in a tweet after Model Y deliveries began in Mar 2020.

According to Tesla, the heat pump decreases the vehicle’s energy consumption in cold weather by 15-20%. This is a significant amount of energy when it comes to EV range in intense cold weather and icy conditions.

Let’s watch how Tesla improved its vehicles to tackle challenging cold weather situations with better efficiency than most EVs made by other manufacturers.

Video: Tesla engineers explain the Heat Pump innovation.
Tesla Model Y Accessories by EVANNEX (Sponsored Banner).
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Iqtidar Ali
Iqtidar Alihttp://www.teslaoracle.com
Iqtidar has been writing about Tesla, Elon Musk, and EVs for more than 3 years on XAutoWorld.com, many of his articles have been republished on CleanTechnica and InsideEVs, maintains a healthy relationship with the Tesla community across the Social Media sphere. You can reach him on Twitter @IqtidarAlii

2 COMMENTS

  1. It is not working: We have a 2021 Model Y with the heat pump. We took a summer trip from our NC house to our FL house and used range miles at about 120% of actual miles, typical for summer driving. Did the exact same trip a couple of weeks ago and the range consumption was 145% of actual. Exact same route, just cold weather (30s-40s). We had to slow down at the end to keep from dropping below 10% on arrival. I also have a 2018 Model 3 without the heat pump. I see no appreciable difference in the cars range and consumption in cold weather. One of the things that I do notice is that in cold weather it’s common for the windows to start to fog up. When you turn on the Windshield defroster, it turns off recirculate so the car is constantly having to heat very cold outside air.

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