Cooling system for an electrically powered vehicle

A dual cooling circuit system with a 3-way valve switches between summer cooling and winter heating modes, addressing the temperature regulation challenges of electric vehicle chargers by efficiently using waste heat for battery heating.

DE102015122196B4Active Publication Date: 2025-01-30DR ING H C F PORSCHE AG
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Patent Information

Application Number
DE102015122196
Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
Filing Date
2015-12-18
Publication Date
2025-01-30
Estimated Expiration
2035-12-18

AI Technical Summary

Technical Problem

Existing cooling systems for electric vehicles struggle to efficiently manage temperature regulation of the traction battery charger, particularly in varying weather conditions, requiring optimal heating in winter and cooling in summer.

Method used

A dual cooling circuit system is implemented, with the charger integrated into a first cooling circuit for summer cooling and a second circuit for winter heating, utilizing a 3-way valve to switch between these modes, allowing waste heat from the charger to be used for battery heating in winter.

Benefits of technology

This system ensures efficient temperature management of the charger, reducing energy consumption by utilizing waste heat for battery heating in winter and maintaining optimal cooling in summer, thereby enhancing overall efficiency.

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Abstract

Cooling circuit system set up for an electrically powered vehicle, with at least one electric motor (8, 10) integrated in a first cooling circuit (2), as well as with a battery (50) integrated in a second cooling circuit (38), as well as with a connecting line (22, 34, 35, 42) arranged between the first and the second cooling circuit (2, 38) and controllable by at least one switching valve, as well as with an electric charger (36) for the battery (50) which is integrated in the connecting line (22, 34, 35, 42).
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Citation Information

Patent Citations

  • Traction battery cooling and / or tempering device for use in motor vehicle i.e. hybrid vehicle, has battery and cooling circuit thermally coupled with each other by refrigerant circuit to release heat on part of battery with low temperature

    DE102007004979A1

  • Cooling arrangement for e.g. hybrid electric vehicle, has two exhaust gas releasing devices connected in series or parallel to cooling circuit, and coupling elements for connecting electric energy storage to cooling circuit

    DE102010014752A1

  • Cooling system for motor vehicle, has energy source that is coupled to the cooling medium circuit and the refrigerant circuit, to exchange heat energy between the cooling medium circuit and the refrigerant circuit

    DE102011090147A1

  • Circuit arrangement for cooling e.g. electrical drive components, of e.g. plug-in hybrid vehicle, has coolant pump, inner space heat exchanger, electrical drive components and low temperature radiator arranged in unbranched cooling circuit

    DE102011109703A1

  • Coolant circuit for vehicles

    DE102012217101A1