KR-20260066398-A - THERMAL MANAGEMENT SYSTEM FOR VEHICLE

KR20260066398AKR 20260066398 AKR20260066398 AKR 20260066398AKR-20260066398-A

Abstract

A thermal management system for vehicles is disclosed. A thermal management system for a vehicle according to an embodiment of the present invention utilizes a single chiller in which the refrigerant and coolant exchange heat to efficiently control the temperature of electrical components excluding the motor and the battery module, thereby enabling the elimination of a radiator and the simplification of the entire component set.

Inventors

조찬웅
신민섭
차용웅
정성빈

Assignees

현대자동차주식회사
기아 주식회사

Dates

Publication Date: 20260512
Application Date: 20241104

Claims (20)

A motor that provides driving force to a vehicle; A battery module that provides power to the above motor; An air conditioning device comprising a condenser and a chiller, which circulates a refrigerant; and A cooling device comprising a cooling water line connected to the chiller to cool the battery module and electrical components equipped in the vehicle using cooling water that has exchanged heat with a refrigerant in the chiller; and The above coolant line includes a first connection line equipped with the battery module and a second connection line equipped with the electrical components excluding the motor. A thermal management system for a vehicle characterized in that the first connecting line and the second connecting line are configured in parallel.
In paragraph 1, The above motor is connected to a motor cooling device that cools the motor using oil, and The above motor cooling device is An oil cooler connected to the above motor through an oil line; and An oil pump provided in the oil line and circulating oil cooled in the oil cooler along the oil line; A thermal management system for a vehicle characterized by including
In paragraph 1, A thermal management system for a vehicle characterized by having a valve provided at a location where the first connection line and the second connection line, which are branched from the coolant line, rejoin the coolant line so that the coolant passing through the chiller flows back into the chiller after passing through the battery module and the electrical components, respectively, through the first connection line and the second connection line.
In paragraph 1, A thermal management system for a vehicle characterized by having a valve provided at a location where the first connection line and the second connection line branch off from the coolant line so that the coolant passing through the chiller flows into the battery module and the electrical component, respectively, through the first connection line and the second connection line.
In paragraph 1, In the cooling water line upstream of the above chiller A thermal management system for a vehicle characterized by being equipped with a water pump.
In paragraph 1, The internal diameter of the first connecting line and the internal diameter of the second connecting line are A thermal management system for a vehicle characterized by being formed with different inner diameters.
In paragraph 6, The inner diameter of the first connecting line above is A thermal management system for a vehicle characterized by being formed with an inner diameter larger than the inner diameter of the second connecting line.
In paragraph 1, A thermal management system for a vehicle characterized in that the first connection line is further equipped with a battery heater so that the coolant passes through the battery module and the battery heater.
In paragraph 1, Based on the flow direction of the coolant, a first water pump is provided in the first connection line at the front end of the battery module, and A thermal management system for a vehicle characterized by having a second water pump provided in the second connecting line at the front end of the electrical component, based on the flow direction of the coolant.
In Paragraph 9, The above-mentioned first water pump and the above-mentioned second water pump are A thermal management system for a vehicle characterized by operating at different rotational speeds (RPM: revolution per minute) such that the flow rates of the coolant flowing through the first connection line and the second connection line, respectively, become different.
In Paragraph 9, The pumping head of the first water pump mentioned above is A thermal management system for a vehicle characterized by having a head greater than the head of the second water pump so that the flow rates of each coolant flowing through the first connection line and the second connection line are different.
In Paragraph 9, A thermal management system for a vehicle, characterized in that the first connection line is further equipped with a battery heater, and the coolant flowing along the first connection line passes through the battery heater and the battery module.
In paragraph 1, A thermal management system for a vehicle characterized by having a reservoir tank provided at a location where the first connecting line and the second connecting line branched from the coolant line rejoin the coolant line based on the coolant flow direction, or at a location where the first connecting line and the second connecting line branched from the coolant line.
A motor that provides driving force to a vehicle; A battery module that provides power to the above motor; An air conditioning device comprising a condenser and a chiller, which circulates a refrigerant; and A cooling device comprising a cooling water line connected to the chiller to cool the battery module and electrical components equipped in the vehicle using cooling water that has exchanged heat with a refrigerant in the chiller; and The battery module is arranged in series on the chiller and the cooling water line, and The above electrical component is provided in a branch line where one end is connected to the cooling water line at the front end of the chiller and the other end is connected to the cooling water line at the rear end of the battery module. A thermal management system for a vehicle characterized in that the battery module and the electrical components are arranged in parallel through the coolant line and the branch line.
In Paragraph 14, The above motor is connected to a motor cooling device that cools the motor using oil, and The above motor cooling device is An oil cooler connected to the above motor through an oil line; and An oil pump provided in the oil line and circulating oil cooled in the oil cooler along the oil line; A thermal management system for a vehicle characterized by including
In Paragraph 14, Some of the cooling water flowing into the chiller along the cooling water line flows into the branch line to bypass the chiller and pass through the electrical components, and A thermal management system for a vehicle characterized in that the remaining coolant among the coolant flowing into the chiller along the coolant line sequentially passes through the chiller and the battery module, and then joins the coolant line with a portion of the coolant flowing along the branch line.
In Paragraph 14, The inner diameter of the above cooling water line and the inner diameter of the above branch line are A thermal management system for a vehicle characterized by being formed with different inner diameters.
In Paragraph 17, The inner diameter of the above cooling water line is A thermal management system for a vehicle characterized by being formed with an inner diameter larger than the inner diameter of the branch line.
In Paragraph 14, A water pump is provided in the cooling water line at the rear end of the battery module, and A thermal management system for a vehicle characterized in that the other end of the branch line is connected to the coolant line between the battery module and the water pump.
In Paragraph 19, A thermal management system for a vehicle characterized by having a reservoir tank provided in the coolant line upstream of the water pump.

Description

Thermal Management System for Vehicle The present invention relates to a thermal management system for a vehicle, and more specifically, to a thermal management system for a vehicle that efficiently controls the temperature of electrical components excluding the motor and the battery module using a single chiller in which the refrigerant and the coolant exchange heat. Recently, as environmental and energy resource issues have become increasingly important, electric vehicles are gaining attention as a means of transportation for the future. Since electric vehicles utilize a battery module formed by combining multiple rechargeable cells into a single pack as their primary power source, they produce no exhaust gases and generate very little noise. These electric vehicles are driven by a motor that operates using power supplied from a battery module. In addition, the electric vehicle is equipped with electrical components for controlling and managing the motor and charging the battery module, along with numerous electronic devices for convenience. Meanwhile, since the motor used as the primary power source for electric vehicles, along with battery modules and electrical components, generate a significant amount of heat, efficient cooling is required; therefore, efficient temperature management of electrical components and battery modules is a critical issue. In addition, since the battery module delivers optimal performance at a set temperature, it must rapidly raise its temperature to the set level during the initial stages of driving. Conventionally, separate cooling systems were applied to control the temperature of electronic components and battery modules; however, since the capacity must be increased according to the size of the electronic components and battery modules, there is a problem of space constraints. In addition, increasing the capacity of each cooling system leads to the problem of increased power consumption required for operation. Accordingly, in electric vehicles, technology development is required to efficiently utilize waste heat generated from electronic components, along with temperature control of electronic components and batteries, in order to maximize energy efficiency while ensuring the durability of electronic components and battery modules. 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 thermal management system for a vehicle according to a first embodiment of the present invention. FIG. 2 is a block diagram of a thermal management system for a vehicle according to a second embodiment of the present invention. FIG. 3 is a block diagram of a thermal management system for a vehicle according to a third embodiment of the present invention. FIG. 4 is a block diagram of a thermal management system for a vehicle 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 thermal management system for a vehicle according to a first embodiment of the present invention. A thermal management system for a vehicle according to the first embodiment of the present invention can efficiently control the temperature of electrical components (30) and a battery module (20), excluding the motor (10), by using a chiller (54) in which the refrigerant and coolant exchange heat, thereby el