Jac
Well-Known Member
- First Name
- Jacob
- Joined
- Mar 16, 2022
- Threads
- 29
- Messages
- 418
- Reaction score
- 771
- Location
- Connecticut
- Vehicles
- Volvo XC60, Volvo XC40, Honda VFR1200X
- Occupation
- Sailing, motorcycling, travel (Retired)
- Thread starter
- #1
“The new Rivian patent proposes using coolant sprayers on the outer stator windings to solve this problem. The coolant can be an oil-based electric motor lubricant or a special dielectric (insulating) fluid derived from purified synthetic oil. Spraying the stator windings with this coolant drenches the windings with this coolant.
An oil sump will catch the coolant after it has passed through the windings, from where it will be pumped to a heat exchanger to shed the absorbed heat before being returned to the stator windings via an electronically-controlled pump. Electronic control enables more accurate management of the motor's temperature and will ensure more consistent performance, as well as reduce the risk of thermal shock damage to the stator coils. The end result is a longer motor life as well as consistent performance, regardless of how hard the electric motor has been working.
Perhaps these updates will come to new versions of the company's existing products, or maybe they'll only be seen in a few years to come. If EVs are to take over, they need to get more efficient, and Rivian is working overtime to make that happen.”
Full article: https://carbuzz.com/news/rivian-knows-how-to-make-electric-motors-more-reliable
An oil sump will catch the coolant after it has passed through the windings, from where it will be pumped to a heat exchanger to shed the absorbed heat before being returned to the stator windings via an electronically-controlled pump. Electronic control enables more accurate management of the motor's temperature and will ensure more consistent performance, as well as reduce the risk of thermal shock damage to the stator coils. The end result is a longer motor life as well as consistent performance, regardless of how hard the electric motor has been working.
Perhaps these updates will come to new versions of the company's existing products, or maybe they'll only be seen in a few years to come. If EVs are to take over, they need to get more efficient, and Rivian is working overtime to make that happen.”
Full article: https://carbuzz.com/news/rivian-knows-how-to-make-electric-motors-more-reliable
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