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US 9,844,995 B2Granted
EV muti-mode thermal control system
AssigneeAtieva, Inc.
InventorPeter Dore Rawlinson
Life of this patent
Estimating the term…
Abstract
A thermal management system that utilizes a multi-mode valve assembly within the drive train control loop to provide efficient thermal control of the drive train components is provided. The multi-mode valve assembly allows the mode of thermal coupling between the thermal control loop and the various drive train components (e.g., vehicle propulsion motor, gearbox assembly, power electronics subsystem, etc.) to be varied in accordance with present conditions.
Claims20
A multi-mode vehicle drive train thermal management system, comprising:
- a drive train thermal control loop comprising a first circulation pump, wherein said first circulation pump circulates a heat transfer fluid within said drive train thermal control loop, and wherein said drive train thermal control loop is thermally coupled to a primary drive train component and to a secondary drive train component;
- a first valve assembly coupled to said drive train thermal control loop, wherein said first valve assembly in a first operational mode thermally couples said drive train thermal control loop to said primary drive train component and to said secondary drive train component in series, wherein when said first valve assembly is in said first operational mode said drive train thermal control loop is thermally coupled first to said primary drive train component and second to said secondary drive train component, wherein said first valve assembly in a second operational mode thermally couples said drive train thermal control loop to said secondary drive train component and to said primary drive train component in series, wherein when said first valve assembly is in said second operational mode said drive train thermal control loop is thermally coupled first to said secondary drive train component and second to said primary drive train component;
- and
- a second valve assembly coupled to said drive train thermal control loop, wherein when said first valve assembly is in said first operational mode and said second valve assembly is in a third operational mode said drive train thermal control loop is thermally coupled first to said primary drive train component and second to said secondary drive train component, and wherein when said first valve assembly is in said first operational mode and said second valve assembly is in a fourth operational mode said drive train thermal control loop is thermally decoupled from said primary drive train component and said heat transfer fluid is allowed to by-pass said primary drive train component, and wherein when said first valve assembly is in said first operational mode and said second valve assembly is in said fourth operational mode said drive train thermal control loop is thermally coupled to said secondary drive train component.
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Dependencies are inferred from the claim text.