CN-121989616-A - Thermal management system for a vehicle

Abstract

Disclosed is a thermal management system for a vehicle according to an embodiment of the present invention, which can remove a radiator and simplify the overall layout by efficiently adjusting the temperatures of electric components other than a motor and a battery module using a cooler for heat exchange between a refrigerant and a coolant.

Inventors

• Zhao Canxiong
• Shen Minxie
• Che Longxiong
• ZHENG CHENGBIN

Assignees

• 现代自动车株式会社
• 起亚株式会社

Dates

Publication Date

20260508

Application Date

20250825

Priority Date

20241104

Claims (20)

1. 1. A thermal management system for a vehicle, comprising: a motor that provides driving force to the vehicle; a battery module that supplies power to the motor; an air conditioner including a condenser and a cooler and circulating a refrigerant, and A cooling device including a coolant line connected to the cooler so as to cool the battery module and electric components provided in the vehicle using a coolant heat-exchanged with a refrigerant in the cooler; Wherein the coolant line includes a first connection line provided with the battery module, a second connection line provided with the electrical component other than the motor, The first connecting line and the second connecting line are configured in parallel.
2. 2. The thermal management system for a vehicle of claim 1, wherein, The motor is connected to a motor cooling device which cools the motor with oil, The motor cooling device includes: an oil cooler connected to the motor through an oil line, and An oil pump that is provided to the oil line and circulates the oil cooled in the oil cooler along the oil line.
3. 3. The thermal management system for a vehicle of claim 1, wherein, A valve device is provided at a position where the first connection line and the second connection line branched from the coolant line are recombined with the coolant line such that the coolant flowing through the cooler flows into the cooler again after flowing through the battery module and the electrical component through the first connection line and the second connection line, respectively.
4. 4. The thermal management system for a vehicle of claim 1, wherein, Valve means are provided at positions at which the first and second connection lines branch from the coolant line such that the coolant flowing through the cooler flows into the battery module and the electric component through the first and second connection lines, respectively.
5. 5. The thermal management system for a vehicle of claim 1, wherein, A water pump is arranged on the cooling liquid pipeline at the front end of the cooler.
6. 6. The thermal management system for a vehicle of claim 1, wherein, The inner diameter of the first connecting line and the inner diameter of the second connecting line are formed to be different from each other.
7. 7. The thermal management system for a vehicle of claim 6, wherein, The first connecting line has an inner diameter formed to be larger than an inner diameter of the second connecting line.
8. 8. The thermal management system for a vehicle of claim 1, wherein, A battery heater is further provided on the first connection line, and a cooling liquid flows through the battery module and the battery heater.
9. 9. The thermal management system for a vehicle of claim 1, wherein, A first water pump is arranged on the first connecting line at the front end of the battery module based on the flowing direction of the cooling liquid; A second water pump is provided on the second connection line at the front end of the electric component with respect to the flow direction of the coolant.
10. 10. The thermal management system for a vehicle of claim 9, wherein, The first water pump and the second water pump are operated at different rotational speeds from each other so that the flow rates of the coolant flowing through the first connection line and the second connection line are different, respectively.
11. 11. The thermal management system for a vehicle of claim 9, wherein, The head of the first water pump is larger than the head of the second water pump so that the flow rates of the cooling liquid flowing through the first connecting line and the second connecting line are different, respectively.
12. 12. The thermal management system for a vehicle of claim 9, wherein, And a battery heater is further arranged on the first connecting pipeline, and the cooling liquid flowing along the first connecting pipeline flows through the battery heater and the battery module.
13. 13. The thermal management system for a vehicle of claim 1, wherein, And a liquid storage tank is arranged at a position where the first connecting pipeline and the second connecting pipeline branched from the cooling liquid pipeline are recombined with each other on the basis of the flowing direction of the cooling liquid, or at a position where the first connecting pipeline and the second connecting pipeline are branched from the cooling liquid pipeline.
14. 14. A thermal management system for a vehicle, comprising: a motor that provides driving force to the vehicle; a battery module that supplies power to the motor; an air conditioner including a condenser and a cooler and circulating a refrigerant, and A cooling device including a coolant line connected to the cooler so as to cool the battery module and electric components provided in the vehicle using a coolant heat-exchanged with a refrigerant in the cooler; Wherein the battery module is disposed in series with the cooler on the coolant line, The electrical component is disposed on a branch line having one end connected to the coolant line at the front end of the cooler and the other end connected to the coolant line at the rear end of the battery module, The battery module and the electrical component are configured in parallel by the coolant line and the branch line.
15. 15. The thermal management system for a vehicle of claim 14, wherein, The motor is connected to a motor cooling device which cools the motor with oil, The motor cooling device includes: an oil cooler connected to the motor through an oil line, and An oil pump that is provided to the oil line and circulates the oil cooled in the oil cooler along the oil line.
16. 16. The thermal management system for a vehicle of claim 14, wherein, A part of the total coolant flowing along the coolant line flows through the branch line so as to bypass the cooler and flow through the electrical component; The remaining coolant of the total coolant flowing along the coolant lines is merged with a portion of the coolant flowing along the branch lines at the coolant lines after sequentially flowing through the cooler and the battery module.
17. 17. The thermal management system for a vehicle of claim 14, wherein, The inner diameter of the coolant line and the inner diameter of the branch line are formed to be different from each other.
18. 18. The thermal management system for a vehicle of claim 17, wherein, The coolant line is formed to have an inner diameter larger than an inner diameter of the branch line.
19. 19. The thermal management system for a vehicle of claim 14, wherein, A water pump is arranged on the cooling liquid pipeline at the rear end of the battery module; The other end of the branch line is connected to the coolant line between the battery module and the water pump.
20. 20. The thermal management system for a vehicle of claim 19, wherein, The front end of the water pump is provided with a liquid storage tank on the cooling liquid pipeline.

Description

Thermal management system for a vehicle Technical Field The present invention relates to a thermal management system for a vehicle, and more particularly, to a thermal management system for a vehicle that efficiently adjusts the temperature of electrical components other than an electric motor and a battery module by using a cooler for heat exchange of a refrigerant with a coolant. Background Recently, as environmental problems and energy problems are increasingly emphasized, electric vehicles (ELECTRIC VEHICLE) are attracting attention as future vehicles. An electric vehicle uses a battery module, which is formed of a plurality of chargeable or dischargeable secondary batteries (cells) into one battery pack (pack), as a main power source, and thus has no exhaust emission at all and very little noise. These electric vehicles are driven by an electric motor that operates with electric power supplied through a battery module. In addition, the electric vehicle is provided with a plurality of electronic devices for convenience functions, and also provided with electrical components for controlling and managing the motor and charging the battery module. On the other hand, since the amount of heat generated by the electric motor, the battery module, and the electric components used as the main power source of the electric vehicle is very large, efficient cooling is required, and it is very important to efficiently control the temperature of the electric components and the battery module. In addition, since the battery module can exhibit the optimum performance at the set temperature, it is necessary to quickly raise the temperature to the set temperature at the initial stage of running. Conventionally, in order to adjust the temperature of the electronic component and the battery module, a separate cooling system has been used, but depending on the size of the electronic component and the battery module, the capacity must be increased, and there is a problem in that space is limited. Further, when the capacity of each cooling system increases, there is also a problem in that the power required for starting the cooling system increases. Therefore, in order to secure durability of the electric components and the battery module in the electric vehicle while maximizing energy efficiency, it is necessary to develop a technology capable of adjusting the temperatures of the electric components and the battery and effectively utilizing waste heat generated from the electric components. The statements in this background section merely serve to increase the understanding of the background of the invention and may contain no prior art that is already known to a person of ordinary skill in the art. Disclosure of Invention The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a thermal management system for a vehicle, which can eliminate a radiator and simplify the overall layout by efficiently adjusting the temperatures of electric components other than a motor and a battery module by using one cooler for exchanging heat between a refrigerant and a coolant. To achieve this object, a thermal management system for a vehicle according to an embodiment of the present invention may include a motor providing driving force to the vehicle, a battery module providing power to the motor, an air conditioning device including a condenser and a cooler circulating a refrigerant, and a cooling device including a coolant line connected with the cooler to cool the battery module and an electrical component provided in the vehicle using a coolant heat-exchanged with the refrigerant in the cooler, wherein the coolant line may include a first connection line provided with the battery module, a second connection line provided with the electrical component other than the motor, and the first connection line and the second connection line may be configured in parallel. The motor may be connected to a motor cooling device that cools the motor using oil, and the motor cooling device may include an oil cooler that is connected to the motor through an oil line, and an oil pump that is provided to the oil line and circulates the oil cooled in the oil cooler along the oil line. A valve device may be provided at a position where the first connection line and the second connection line branched from the coolant line are recombined with the coolant line such that the coolant flowing through the cooler flows into the cooler again after flowing through the battery module and the electrical component through the first connection line and the second connection line, respectively. A valve device may be provided at a position at which the first and second connection lines branch from the coolant line such that the coolant flowing through the cooler flows into the battery module and the electric component through the first and second connection lines, respectively. A water pump may be provi