Valeo Systemes Thermiques

Christophe Rousseau

Stefan Karl

Mohamed Yahia

Jugurtha Benouali

Jin-Ming Liu

Bastien Jovet

Frederic Ladrech

Regine Haller

A liquid cooling circuit for a storage battery, with which a motor vehicle of the electric or hybrid type is equipped includes a main loop for the circulation of a heat transfer fluid, the main loop is connected to elements for cooling the storage battery, and a first bypass connects the main loop to an air cooling radiator, and a second bypass connecting the main loop to a heat exchanger intended to be connected to an air conditioning system with which the motor vehicle is equipped, so as to cool the heat transfer fluid by means of the radiator and/or the heat exchanger of the air conditioning system. The main loop is connected to the first bypass by way of a first progressive three-way valve, and the main loop is connected to the second bypass by way of a second progressive three-way valve.

System for cooling the batteries of an electric or hybrid vehicle

A device for expanding a refrigerant fluid has a first inlet and a first outlet which are connected by a first refrigerant circulation duct. The first refrigerant circulation duct has an upstream part and a downstream part which parts are placed in communication by a first communication passage. The device also has a second inlet and a second outlet which are connected by a second refrigerant circulation duct. The device regulates an expansion of the refrigerant fluid and has a first needle valve housed inside the upstream part of the first refrigerant flow duct connected by a first connecting rod to a thermostatic sensor in communication with the second refrigerant flow duct that allows or prevents refrigerant fluid from circulating through the first communicating passage. The device also measures the pressure of the refrigerant fluid entering the evaporator (Pse) which pressure measurement is taken at the first outlet.

Thermostatic expansion device and air conditioning loop comprising such a thermostatic expansion device

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Raizeux, France

Christophe Rousseau