System and method for thermal management of a motor vehicle comprising an electric drive chain and a fuel cell

A deionized fluid circuit with separate loops and heat exchangers addresses thermal management challenges in electric vehicles, ensuring efficient fuel cell and electric drive system integration and temperature control.

FR3166585A1Pending Publication Date: 2026-03-27RENAULT SA
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Patent Information

Application Number
FR2024010132
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2026-03-27

AI Technical Summary

Technical Problem

The integration of a fuel cell into an electric vehicle's thermal management system poses challenges due to the need for deionized fluids, differing temperature requirements between the fuel cell and electric drive system, and insufficient heat generation from the electric powertrain to maintain battery and passenger compartment temperatures.

Method used

A thermal management system utilizing a deionized heat transfer fluid circuit with separate loops and heat exchangers for the fuel cell and electric drive components, along with solenoid valves for fluid direction, optimizes thermal management by isolating and controlling heat exchange.

Benefits of technology

This system effectively manages thermal conditions for both the fuel cell and electric drive system, maintaining optimal battery and passenger compartment temperatures while reducing component wear and energy consumption.

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Abstract

TITLE: System and method for thermal management of a motor vehicle comprising an electric drivetrain and a fuel cell. Thermal management system (1) of a motor vehicle (100) comprising an electric drivetrain and a fuel cell device (30), the system comprising a primary circuit (3) for circulating a deionized heat transfer fluid (F1) comprising at least one component of the electric drivetrain, the fuel cell and a first heat exchanger (31). Abstract figure: Figure 1
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