KR-102962270-B1 - A COOLING SYSTEM FOR VEHICLE

KR102962270B1KR 102962270 B1KR102962270 B1KR 102962270B1KR-102962270-B1

Abstract

A vehicle cooling system is disclosed. A vehicle cooling system according to an embodiment of the present invention comprises: a first cooling device including a first radiator and a first water pump connected to a first coolant line, and circulating a first coolant in the first coolant line to cool at least one electrical component; a second cooling device including a second radiator and a second water pump connected to a second coolant line, and circulating a second coolant in the second coolant line; a coolant connection line selectively connected to the first coolant line through a first valve; a battery module provided in the second coolant line; an autonomous driving controller provided in the coolant connection line; and at least one chiller connected to the first coolant line and the second coolant line, respectively, and connected to an air conditioning system, and selectively inflowing the first coolant or the second coolant, which exchanges heat with a refrigerant supplied from the air conditioning system to control the temperature of the first coolant or the second coolant. It includes, and the battery module and the autonomous driving controller may have their temperature controlled by the first coolant or the second coolant that has passed through the at least one chiller.

Inventors

김연호
박중하
김재완
김재연
김명환

Assignees

현대자동차 주식회사
기아 주식회사

Dates

Publication Date: 20260507
Application Date: 20210611

Claims (20)

A first cooling device comprising a first radiator and a first water pump connected to a first cooling water line, and circulating a first cooling water in the first cooling water line to cool at least one electrical component; A second cooling device comprising a second radiator and a second water pump connected to a second cooling water line, and circulating a second cooling water in the second cooling water line; A battery module provided in the second cooling water line above; An autonomous driving controller cooling device comprising a cooling water connection line through which the first cooling water flows, which is selectively connected via the first cooling water line and the first valve, and an autonomous driving controller provided in the cooling water connection line; and At least one chiller is connected to the second cooling water line and the cooling water connection line, respectively, and is connected to an air conditioning unit, and optionally controls the temperature of the first cooling water or the second cooling water by exchanging heat with a refrigerant supplied from the air conditioning unit; The above battery module and the above autonomous driving controller A vehicle cooling system characterized by having its temperature controlled by a first coolant or a second coolant that has passed through at least one chiller.
In paragraph 1, The above at least one chiller A first chiller connected to the above air conditioning device through a refrigerant connection line; and A second chiller connected to the above air conditioning system through a refrigerant line; A vehicle cooling system characterized by including
In paragraph 2, The above first chiller is A vehicle cooling system characterized by being arranged in parallel with the second chiller through the refrigerant connection line based on the refrigerant line.
In paragraph 2, The above refrigerant connection line is equipped with a first expansion valve, and A vehicle cooling system characterized by having a second expansion valve in the refrigerant line connected to the second chiller.
In paragraph 1, In the above cooling water connection line A vehicle cooling system characterized by being equipped with a third water pump.
In paragraph 1, The above at least one chiller A first heat dissipation part connected to the second cooling water line above; A second heat dissipation part connected to the above cooling water connection line; and A partition wall that separates the first and second heat dissipation sections within the chiller and allows the refrigerant to pass through, so as to prevent the first and second cooling waters supplied respectively through the second cooling water line and the cooling water connection line from mixing; A vehicle cooling system characterized by including
In paragraph 6, The above first heat dissipation part and the above second heat dissipation part A vehicle cooling system characterized by being configured as an integrated unit, wherein an expansion valve is provided in a refrigerant line connected to at least one chiller.
In paragraph 6, The second coolant that has passed through the first heat dissipation unit is supplied to the battery module along the second coolant line, and A vehicle cooling system characterized in that the first coolant passing through the second heat dissipation unit is supplied to the autonomous driving controller along the coolant connection line.
In paragraph 1, The above first valve is A vehicle cooling system characterized by being a 4-way valve.
In paragraph 1, The above first radiator and the above second radiator are A vehicle cooling system characterized by being formed as an integrated unit with partitions to prevent mixing of the first coolant and the second coolant.
In paragraph 1, The above first cooling device is A vehicle cooling system characterized by further including a first branch line connected to the first coolant line between the first radiator and the first water pump through a second valve provided in the first coolant line between the first radiator and the first water pump.
A first cooling device comprising a first radiator and a first water pump connected to a first cooling water line, and circulating a first cooling water in the first cooling water line to cool at least one electrical component; A second cooling device comprising a second radiator and a second water pump connected to a second cooling water line, and circulating a second cooling water in the second cooling water line; A cooling water connection line through which the first cooling water flows, selectively connected via the first cooling water line and the first valve; A battery module provided in the second cooling water line above; An autonomous driving controller provided in the above-mentioned cooling water connection line; At least one chiller that is respectively connected to the second cooling water line and the cooling water connection line, is connected to an air conditioning unit, and selectively controls the temperature of the first cooling water or the second cooling water by exchanging heat with a refrigerant supplied from the air conditioning unit; A first branch line connected to the first coolant line between the first radiator and the first water pump through a second valve provided in the first coolant line between the first radiator and the first water pump; A second branch line that selectively separates the cooling water connection line and the first cooling water line according to the selective operation of the first valve; and A third branch line that selectively connects the cooling water connection line so that the cooling water connection line forms a closed circuit independent of the first cooling device according to the selective operation of the first valve; A vehicle cooling system characterized in that the above battery module and the above autonomous driving controller have their temperature controlled by coolant cooled while passing through at least one chiller.
In Paragraph 12, One end of the above second branch line is connected to the above first valve, and A vehicle cooling system characterized in that the other end of the second branch line is connected at a location where the first coolant line and the coolant connection line are connected between the at least one electrical component and the third branch line.
In Paragraph 12, In the above cooling water connection line A vehicle cooling system characterized by being equipped with a third water pump.
In Paragraph 14, One end of the above third branch line is connected to the cooling water connection line between the above first valve and the above third water pump, and A vehicle cooling system characterized in that the other end of the third branch line is connected to the coolant connection line between the second branch line and the autonomous driving controller.
In Paragraph 12, The above at least one chiller A first chiller connected to the above air conditioning device through a refrigerant connection line; and A second chiller connected to the above air conditioning system through a refrigerant line; A vehicle cooling system characterized by including
In Paragraph 16, The above first chiller is A vehicle cooling system characterized by being arranged in parallel with the second chiller through the refrigerant connection line based on the refrigerant line.
In Paragraph 16, The above refrigerant connection line is equipped with a first expansion valve, and A vehicle cooling system characterized by having a second expansion valve in the refrigerant line connected to the second chiller.
In Paragraph 12, The above at least one chiller A first heat dissipation part connected to the second cooling water line above; A second heat dissipation part connected to the above cooling water connection line; and A partition wall that separates the first and second heat dissipation sections within the chiller and allows the refrigerant to pass through, so as to prevent the first and second coolants supplied respectively through the second coolant line and the coolant connection line from mixing; A vehicle cooling system characterized by including
In Paragraph 19, The above first heat dissipation part and the above second heat dissipation part A vehicle cooling system characterized by being configured as an integrated unit, wherein an expansion valve is provided in a refrigerant line connected to at least one chiller.

Description

A cooling system for vehicles The present invention relates to a vehicle cooling system, and more specifically, to a vehicle cooling system for efficiently cooling electronic components, battery modules, and an autonomous driving controller by linking a cooling device in which coolant circulates and an air conditioning device in which refrigerant circulates in a vehicle capable of autonomous driving. Generally, vehicles are equipped with an air conditioning system to regulate the interior temperature. This air conditioning system is designed to maintain a comfortable interior environment by keeping the vehicle's cabin temperature at an appropriate level regardless of external temperature changes. It is configured to heat or cool the vehicle's interior through heat exchange in the evaporator during the process in which refrigerant discharged by the operation of the compressor circulates back to the compressor after passing through the condenser, receiver dryer, expansion valve, and evaporator. In other words, during the summer cooling mode, the air conditioning system lowers the indoor temperature and humidity by condensing high-temperature, high-pressure gaseous refrigerant compressed by the compressor through the condenser, passing through the receiver dryer and expansion valve, and then evaporating in the evaporator. Meanwhile, there is a recent demand for the development of autonomous vehicles, which are equipped with radar, lidar, GPS, and various other sensors necessary for autonomous driving, as well as autonomous driving controllers that manage them. However, in vehicles capable of autonomous driving as described above, a separate cooling device is required to cool an autonomous driving controller, which has a relatively large amount of heat, along with a cooling device for cooling the engine or motor and electrical components, a cooling device for preventing heat generation in a battery module including a fuel cell, and an air conditioning system for cooling or heating the interior of the vehicle. Consequently, there is a disadvantage in that costs increase and it is difficult to secure space to equip the cooling system within the narrow interior of the vehicle. In addition, there are disadvantages such as increased size and weight of the cooling module installed in the vehicle, and a complex layout of connecting pipes for supplying refrigerant or coolant to the cooling device, air conditioning device, and autonomous driving controller cooling device in a confined space. The matters described in this background technology section are written to enhance understanding of the background of the invention and may include matters that are not prior art already known to those skilled in the art to which this technology belongs. FIG. 1 is a block diagram of a vehicle cooling system according to a first embodiment of the present invention. FIG. 2 is a block diagram of a vehicle cooling system according to a second embodiment of the present invention. FIG. 3 is a block diagram of a vehicle cooling system according to a third embodiment of the present invention. FIG. 4 is an operating state diagram according to the third cooling mode in a vehicle cooling system according to the fourth embodiment of the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be understood that the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, and that various equivalents and modifications that can replace them may exist at the time of filing this application. To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification. The size and thickness of each component shown in the drawings are depicted arbitrarily for the convenience of explanation, and thus the present invention is not necessarily limited to what is shown in the drawings; furthermore, the thickness has been enlarged to clearly represent various parts and regions. And throughout the specification, when a part is described as “comprising” a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components. In addition, terms such as “...unit,” “...means,” “...part,” and “...part” as described in the specification refer to a unit of comprehensive configuration that performs at least one function or operation. FIG. 1 is a block diagram of a vehicle cooling system according to a first embodiment of the present invention. Referring to FIG. 1, a vehicle cooling system according to the first embodiment of the present invention is applied to a vehicle capa