Vehicle cooling system
3 Assignments
0 Petitions
Accused Products
Abstract
The disclosure relates to a cooling system and a method for operating the cooling system for cooling a battery of a vehicle using a coolant circuit. The cooling circuit includes a pump device, a heat exchanger for transferring heat between a coolant and the battery, a heat exchanger for transferring heat between the coolant and the surroundings, and a heat exchanger for transferring heat between the coolant and a refrigerant circulating in a refrigerant circuit. The refrigerant circuit is designed with a heat exchanger and an associated expansion element. The refrigerant circuit includes two additional expansion elements. The first expansion element is arranged upstream of the heat exchanger and the second expansion element is arranged downstream of the heat exchanger, with regard to the direction of the refrigerant flow. The heat exchangers designed as evaporators on the refrigerant side can be operated with different pressure and temperature levels.
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Citations
30 Claims
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1-10. -10. (canceled)
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11. A cooling system for cooling a battery of a vehicle comprising:
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a cooling circuit for receiving a coolant therein; a pump disposed in the cooling circuit; a first heat exchanger in fluid communication with the pump for transferring heat between the coolant and the battery; a second heat exchanger in fluid communication with the pump and the first heat exchanger for transferring heat between the coolant and the atmosphere; and a third heat exchanger in fluid communication with the pump, the first heat exchanger and the second heat exchanger in the cooling circuit for transferring heat between the coolant and a refrigerant circulating through a refrigerant circuit, the refrigerant circuit in fluid communication with the third heat exchanger and including a fourth heat exchanger, a first expansion element, and a second expansion element; wherein the first expansion element is positioned upstream of the third heat exchanger, and the second expansion element is arranged downstream of the third heat exchanger in respect of a direction of flow of the refrigerant so the third heat exchanger and the fourth heat exchanger can be operated at different pressures and temperatures. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for operating a cooling system for cooling a battery of a vehicle comprising the steps of:
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circulating a coolant through a first heat exchanger of a cooling circuit for transferring heat between the coolant and the battery; circulating the coolant through a second heat exchanger of the cooling circuit in fluid communication with the pump and the first heat exchanger for transferring heat between the coolant and the atmosphere; and circulating the coolant through a third heat exchanger of the cooling circuit in fluid communication with the first heat exchanger and the second heat exchanger; wherein the third heat exchanger transfers heat between the coolant and a refrigerant circulating through a refrigerant circuit, the refrigerant circuit in fluid communication with the third heat exchanger and including a fourth heat exchanger, a first expansion element, and a second expansion element; and wherein the first expansion element is positioned upstream of the third heat exchanger, and the second expansion element is arranged downstream of the third heat exchanger in respect of a direction of flow of the refrigerant so the third heat exchanger and the fourth heat exchanger can be operated at different pressures and temperatures. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification