Thermal management system for a hybrid or electric vehicle
AssigneeValeo Systemes Thermiques
InventorsRoland Akiki, Rody El Chammas, Muriel Porto
Life of this patent
Estimating the term…
Abstract
The invention relates to a thermal management system for a hybrid or electric vehicle, including an air conditioning circuit including a two-fluid heat exchanger arranged jointly on a heat transfer fluid circuit, the heat transfer fluid circuit including: a first branch including a first pump, a heat transfer fluid heating device and the two-fluid heat exchanger, a second branch connected directly to the first branch. The heat transfer fluid circuit is configured such that, in a mode of heating the internal air flow, all of the heat transfer fluid passing through the heating device then passes through the two-fluid heat exchanger before returning to the first pump via the second branch.
Claims18
A thermal management system for a hybrid or electric vehicle, the thermal management system comprising:
- a reversible air conditioning circuit in which a refrigerant circulates,
- a heat transfer fluid circuit, and
- a two-fluid heat exchanger arranged jointly between the reversible air conditioning circuit and the heat transfer fluid circuit, with
- the reversible air conditioning circuit including a condenser for transmitting heat energy to an internal air flow, and
- the heat transfer fluid circuit including:
- a first branch having two ends and including a first pump, a heat transfer fluid heating device and the two-fluid heat exchanger,
- a second branch with two ends connected respectively to the ends of the first branch so that the first branch and the second branch form a closed heat transfer fluid circuit,
- wherein the heat transfer fluid circuit is configured such that, in a first mode of heating the internal air flow, all of the heat transfer fluid passing through the heat transfer fluid heating device then passes through the two-fluid heat exchanger before returning to the first pump via the second branch, the heat transfer fluid heating device and the two-fluid heat exchanger being active, and
- wherein the heat transfer fluid circuit includes a fourth branch equipped with a battery heat exchanger, which is configured to allow the exchange of heat between batteries of the vehicle and the heat transfer fluid, the fourth branch including an upstream end connected to the first branch downstream of the two-fluid heat exchanger, and a downstream end connected to the second branch.
A method of operating a thermal management system for a hybrid or electric vehicle, the thermal management system comprising:
- a reversible air conditioning circuit in which a refrigerant circulates,
- a heat transfer fluid circuit, and
- a two-fluid heat exchanger arranged jointly between the reversible air conditioning circuit and the heat transfer fluid circuit, with
- the reversible air conditioning circuit including a condenser for transmitting heat energy to an internal air flow, and
- the heat transfer fluid circuit including:
- a first branch having two ends and including a first pump, a heat transfer fluid heating device and the two-fluid heat exchanger,
- a second branch with two ends connected respectively to the ends of the first branch so that the first branch and the second branch form a closed heat transfer fluid circuit,
- wherein the heat transfer fluid circuit is configured such that, in a first mode of heating the internal air flow, all of the heat transfer fluid passing through the heat transfer fluid heating device then passes through the two-fluid heat exchanger before returning to the first pump via the second branch, the heat transfer fluid heating device and the two-fluid heat exchanger being active,
- wherein the heat transfer fluid circuit includes a fourth branch equipped with a battery heat exchanger, which is configured to allow the exchange of heat between batteries of the vehicle and the heat transfer fluid, the fourth branch including an upstream end which is connected to the first branch downstream of the two-fluid heat exchanger and a downstream end which is connected to the second branch, and
- wherein, in a first mode of heating the internal air flow, the method comprises passing all of the heat transfer fluid through the heating device, then directing the heat transfer fluid so that it passes through the two-fluid heat exchanger, and subsequently directing the heat transfer fluid so that it returns to the first pump via the second branch, the heating device and the two-fluid heat exchanger being active.
Dependencies are inferred from the claim text.