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Thermal diagnosis method for detecting a malfunction in a motor vehicle electrical circuit

Miquel Claire, +2 more
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TLDR
In this article, a method for diagnosing a malfunction of a vehicle cooling system, in particular an electric motor and associated electrical power elements, such as an inverter, on-board charger, is presented.
Abstract: 
The present invention relates to a method for diagnosing a malfunction of a vehicle cooling system, in particular an electric motor and associated electrical power elements, such as an inverter, on-board charger. The method comprises estimating an estimated weighted temperature (424) which is determined from a barycentric calculation of first and second measured temperatures (422, 423), determining a threshold (426) by calculating the minimum between, on the one hand, an outside temperature (425) in an environment of the vehicle and, on the other hand, the second temperature (423), comparing (427) the weighted temperature (424) with said threshold (426), and if the weighted temperature (424) is detected to be lower than said threshold (426), a step of activating a diagnosis (200) of a malfunction of the cooling system.

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Patent

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Neil Carpenter, +3 more
TL;DR: In this paper, a thermal management system for a vehicle having an electric traction motor for moving the vehicle and a battery pack configured to provide power for driving the motor is presented, which includes a motor cooling system operable to cool the motor, and a second thermal load cooling system configured to remove heat from another thermal load.
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Bykoff Cyril, +1 more
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Martin Füchtner
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Electric Vehicle Resilient Thermal Management for Cooling System During Fail Operational

Smith Joshua, +2 more
TL;DR: In this paper, a vehicle includes a first coolant pump, a first set of coolant plumbing coupled with the first warmant pump and a set of one or more thermal sources.