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
6 Cites 0 Cited by

Patent Information

Application Number
FR2024014302
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2026-06-19

Smart Images

  • Figure 00000000_0000_ABST
    Figure 00000000_0000_ABST
Patent Text Reader

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,
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Thermal management device for an electrical and / or electronic component with a three-fluid heat exchanger

    FR3126754A1

  • Battery thermal management system for electric or hybrid vehicles

    FR3126755A1

  • Dehumidification process for a dielectric fluid of an immersion temperature control circuit, as well as an immersion temperature control circuit for an electrified drive

    DE102023108076A1

  • Cooling a battery by immersion in a composition with a change of state

    FR3115287A1

  • Thermal conditioning system

    FR3142694A1