Tricks with different objects and their solutions. Encyclopedia of tricks

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EFFECTIVE FOCUSES AND THEIR CLUES
Free library / Directory / Spectacular tricks and their clues

Spectacular tricks and their clues

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

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Rivian frost-resistant electric vehicles 07.03.2021

Most modern electric vehicles lose some of the traction battery charge after prolonged exposure to frost. Manufacturers recommend leaving them plugged into a power outlet in such conditions, but this is not always possible. Rivian developed its own approach to heating traction batteries, which was tested in -XNUMX degrees below zero.

Pre-series samples of pickups were sent for testing to the border with Canada, where the site has freezers that allow vehicles to be tested at temperatures of minus 40 degrees Celsius.

Many automakers are trying to equip their EVs and hybrids with optional electric battery heaters that either use their own charge or are powered by a wall outlet. Rivian also sacrifices part of the traction battery charge for its own heating in such conditions, but does not use additional heaters.

The company's engineers managed to teach the electric motor and inverter to generate thermal energy at a time when the machine is stationary. This heat is enough to keep the temperature of the traction battery at 10 degrees Celsius below zero even in severe frosts overboard.

Such a system not only reduces the number of electrical consumers compared to the option using heaters, but also reduces the weight of the vehicle. Rivian claims that an insignificant part of its charge is spent on heating the battery. It is much more important that the car, after a long stop in the cold, allows you to continue driving without significant losses in the power reserve - for other electric vehicles, they can reach a third of the initial level.

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