Method for cooling a power battery, associated cooling system and motor vehicle.
The method of direct heat exchange between refrigerant and dielectric oil in a refrigeration circuit addresses inefficiencies in existing thermal management systems, providing a cost-effective and efficient cooling solution for electric vehicle batteries.
FR3170106A1Pending Publication Date: 2026-06-19AMPERE SAS
Patent Information
- Authority / Receiving Office
- FR · FR
- Patent Type
- Applications
- Current Assignee / Owner
- AMPERE SAS
- Filing Date
- 2024-12-17
- Publication Date
- 2026-06-19
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Abstract
A method for cooling a battery (2000) of a motor vehicle engine (3000) comprising a refrigeration circuit (100) including a first evaporator (110), a dielectric oil circuit (200) including a reservoir (210) containing dielectric oil, and cells (2100, 2200, 2300) of the battery (2000) immersed in the dielectric oil, the method being characterized in that it comprises: Circulation of a refrigerant through the refrigeration circuit (100) including evaporation of the refrigerant in the first evaporator (110); Circulation of the dielectric oil through the dielectric oil circuit (200), including: Circulation of the dielectric oil in the reservoir (210); Circulation of the dielectric oil in the first evaporator (110), including a first heat exchange, implemented by a heat exchanger. (111) of the first evaporator (110), during the evaporation of the refrigerant,by drawing energy from the dielectric oil. Figure for the abbreviation: figure 2,
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