KR101927000B1 - Vehicle thermal management system - Google Patents

Abstract

According to the present invention, a vehicle thermal management system comprises: a first cooling loop thermally communicating with a battery, and having a first circulation pump and a first radiator; and a second cooling loop thermally communicating with an electric appliance and a first heat exchanger, and having a second radiator. Moreover, the electric appliance and the first heat exchanger can be connected to the first cooling loop in parallel. Therefore, degassing of a cooling water loop in addition to heat management performance can be significantly improved.

Description

{VEHICLE THERMAL MANAGEMENT SYSTEM}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal management system for a vehicle, and more particularly, to a thermal management system for a vehicle which not only significantly improves thermal management performance of a battery, a charger, and an electric appliance, but also greatly improves degassing of a cooling water loop .

Recently, as interest in energy efficiency and environmental pollution has been increasing, there has been a demand for the development of an environmentally friendly vehicle capable of substantially replacing the internal combustion engine vehicle. Such an environmentally friendly vehicle is usually an electric vehicle driven by fuel cells or electricity, And a hybrid vehicle driven by a battery. A hybrid vehicle is a next generation vehicle for reducing exhaust gas and improving fuel economy. The hybrid vehicle includes an electric motor for driving wheels of a vehicle other than the engine. The hybrid vehicle includes a battery for discharging electric power to electric components including the electric motor.

The hybrid vehicle includes a thermal management system for controlling the cooling and heating of the engine as well as the cooling system of the engine, the intercooler, the battery, the power electronics, the driving motor, the charger, and the like.

Some heat management systems according to the related art are configured to selectively connect a charger and a battery in series and in parallel, and to connect a charger and a PE part in series, thereby preventing overheating of the battery due to heat generation of the charger.

However, in the heat management system according to the related art, when the charger and the battery are connected in parallel, degassing may not be performed smoothly by one reservoir, and two or more reservoirs must be installed There is a disadvantage that the manufacturing cost is increased and the mounting packaging is disadvantageous.

Also, in the conventional heat management system, when the temperature of the battery is raised by using the waste heat of the PE part in a cold period, the cooling water bypasses the radiator by the bypass circuit to pass through the battery to raise the temperature of the battery.

However, in the conventional heat management system, since the waste heat of the PE part is very low, the temperature rise of the battery due to the waste heat of the PE part may be very limited.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and it is an object of the present invention to provide a thermal management system for a vehicle which can significantly improve thermal management performance of a battery, a charger, and an electric appliance as well as degassing cooling water loops It has its purpose.

According to an aspect of the present invention, there is provided a heat management system for a vehicle,

A first cooling loop communicating thermally with respect to the battery, the first cooling loop including a first circulation pump and a first radiator; And

A second cooling loop in thermal communication with the electrical device and the first heat exchanger, the second cooling loop including a second radiator,

The electrical device and the first heat exchanger may be connected in parallel to the first cooling loop.

Wherein the second cooling loop includes a first branch passage and a second branch passage connected in parallel,

Wherein the electric device is disposed in the first branch passage, the first heat exchanger is disposed in the second branch passage, a second circulation pump is disposed in the first branch passage, and the third circulation pump is disposed in the second branch passage, The pump can be deployed.

The first cooling loop and the second cooling loop may be communicatively connected through the first communication passage and the second communication passage.

And at least one communication passage among the first communication passage and the second communication passage may include a switching valve for switching the flow direction of the cooling water between the first cooling loop and the second cooling loop.

The reservoir may be communicatively connected to at least one of the first cooling channel and the second cooling channel.

The reservoir may be communicatively connected to the second cooling channel via a supplemental channel.

A first degassing passage may be connected between the reverberator and the first cooling loop, and the first degassing passage may have a first degassing valve.

The second digging flow path is branched into two digging flow paths and is connected to each of the first branch flow path and the second branch flow path of the second cooling loop, It may have a gasing valve.

A third cooling loop may be connected to the first heat exchanger.

The first heat exchanger may be at least one of a water-cooled intercooler and a water-cooled condenser.

The second cooling loop may further include a second heat exchanger, and the second heat exchanger may be disposed on the downstream side of the first heat exchanger.

The first cooling loop may further include a chiller connected in parallel to the first radiator.

The first radiator and the second radiator are integrally coupled, and a first cooling loop passing through the first radiator and a second cooling loop passing through the second radiator may be configured independently of each other.

According to the present invention, two cooling loops are communicably connected by a switching valve, so that thermal management performance of a battery, a charger, an electric appliance, and the like is greatly improved, and degassing of a cooling water loop can be greatly improved.

1 is a view illustrating a heat management system for a vehicle according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating a process in which a first cooling loop and a second cooling loop of an automotive thermal management system according to an embodiment of the present invention perform independent cooling operations.
3 is a diagram illustrating a process of raising the temperature of a battery in a heat management system for a vehicle according to an embodiment of the present invention.
4 is a view illustrating a process of cooling a battery when the battery is charged in the heat management system for a vehicle according to the embodiment of the present invention.
FIG. 5 is a diagram illustrating a process in which a first cooling loop is descreened in a vehicle thermal management system according to an embodiment of the present invention.
6 is a diagram illustrating a process of detaching a second cooling loop in a vehicle thermal management system according to an embodiment of the present invention.
7 illustrates a thermal management system for a vehicle according to another embodiment of the present invention.
8 illustrates a thermal management system for a vehicle according to another embodiment of the present invention.
9 shows a heat management system for a vehicle according to another embodiment of the present invention.
10 shows a vehicle thermal management system according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. Also, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

1, a thermal management system 10 according to an embodiment of the present invention includes a first cooling loop 11 and an electrical device 23 that are in thermal communication with a battery 21 and a charger 22, And a second cooling loop 12 that is in thermal communication with the second cooling loop 12.

The first cooling loop 11 may be a coolant conduit through which the cooling water passes and the first cooling loop 11 may include a first circulation pump 31 circulating the cooling water. The cooling water can be circulated through the first cooling loop 11 by the first circulation pump 31. The battery 21 and the charger 22 may be thermally connected to the first cooling loop 11. A portion of the first cooling loop 11 is configured to pass through the battery 21 and the charger 22 so that the cooling water flows through the battery 21 and the charger 22, Can be cooled or heated by the cooling water. The battery 21 may be disposed on the upstream side of the charger 22 along the flow direction of the cooling water on the first cooling loop 11. [

The first cooling loop 11 may include a first radiator 31 that emits heat in a ambient atmosphere. According to one example, the first radiator 31 may be configured to reduce the temperature of the cooling water heated by the battery 12 and the charger 22 by a cooling fan (not shown) adjacent thereto.

The second cooling loop 12 may be a coolant conduit through which the cooling water passes and the second cooling loop 12 may include a second circulation pump 32 circulating the cooling water. The cooling water can circulate through the second cooling loop 12 by the second circulation pump 32. The electric device 23 can be thermally connected to the second cooling loop 12. The electric device 23 may include a plurality of components constituting an electric drive system for driving the vehicle such as an electric motor, PE components, etc., and a plurality of components And may be configured in series and / or in parallel. The electric appliance 23 can be cooled by passing the cooling water circulating through the second cooling loop 12 individually through the components (electric motor, PE parts, etc.) constituting the electric device 23. [

The second cooling loop 12 may include a first heat exchanger 5 that generates waste heat for heating the battery 12 and the first heat exchanger 5 and the electrical device 23 may include a second cooling And may be connected in parallel to the loop 12. The first heat exchanger 5 may be a heat exchanger that generates a relatively high waste heat so that the battery 12 can be heated to a sufficient temperature when the temperature of the battery 12 is required to be raised,

According to one embodiment, the first heat exchanger 5 may be an intercooler of a water cooling type for cooling the intake air sucked into the intake manifold 2 of the engine 1, 3 cooling loop 13, as shown in FIG. The third cooling loop 13 may be a coolant conduit through which cooling water passes and the third cooling loop 13 may comprise a circulation pump (not shown) and a radiator (not shown) have. The third cooling loop 13 can be in thermal communication with the intake manifold 2, the engine 1, the exhaust manifold 3, and the turbocharger 4. The intake manifold 2, the engine 1, the exhaust manifold 3, and the turbocharger 4 may be connected in series to the third cooling loop 13. Thus, the intake manifold 2, the engine 1, the exhaust manifold 3, and the turbocharger 4 can be cooled by the cooling water passing through the third cooling loop 13.

1, the second cooling loop 12 may include a first branch passage 51 and a second branch passage 52 connected in parallel, The flow path 51 and the second branch flow path 52 can be branched at the branch point 12a of the second cooling loop 12 and the first branch flow path 51 and the second branch flow path 52 can be branched And may merge at the confluence point 12b of the cooling loop 12.

The electric device 23 can be disposed in the first branch passage 51 and the first heat exchanger 5 can be disposed in the second branch passage 52. [ The second circulation pump 32 may be disposed in the first branch passage 51 and the second circulation pump 32 may be disposed on the upstream side of the electric device 23 along the flow direction of the cooling water. The third circulation pump 33 may be disposed in the second branch passage 52 and the third circulation pump 33 may be disposed on the upstream side of the first heat exchanger 5 along the flow direction of the cooling water .

The second cooling loop 12 may include a second radiator 32 that emits heat in an ambient atmosphere. According to one example, the second radiator 32 can be configured to lower the temperature of the cooling water heated by the electric device 23 and the first heat exchanger 5 by a cooling fan (not shown) adjacent thereto.

The first cooling loop 11 and the second cooling loop 12 may be communicatively connected through the first communication passage 61 and the second communication passage 62. [

One end of the first communication passage 61 may be connected to a point downstream of the first heat exchanger 5 of the second cooling loop 12 and the other end of the first communication passage 61 may be connected to the first cooling loop 11, The first radiator 41, and the first circulation pump 31 of the first radiator 41, respectively.

One end of the second communication passage 62 may be connected to a downstream point of the second radiator 42 of the second cooling loop 12 and the other end of the second communication passage 62 may be connected to the other end of the first cooling loop 11 And may be connected to one side point between the first radiator 41 and the charger 22.

At least one of the communication flow path of the first communication passage 61 and the second communication passage 62 is connected to a switching valve (not shown) for switching the flow direction of the cooling water between the first cooling loop 11 and the second cooling loop 12 63). The switching valve 63 may be a three-way valve.

1, the switching valve 63 may be disposed at a point where the first communication passage 61 and the second cooling loop 12 are connected, through which the first heat exchanger (not shown) 5 can be appropriately used for raising the temperature of the battery 21. [ The switching valve 63 has a first port 63a communicating with the first communication passage 61, a second port 63b communicating with the first heat exchanger 5 and the electric device 23, a second port 63b communicating with the second radiator And a third port 63c communicating with the first and second ports 42 and 42, respectively. The switch valve 63 may be configured to selectively open and close the first port 63a, the second port 63b, and the third port 63c.

The thermal management system 10 according to an embodiment of the present invention may include a single reservoir 25 in which cooling water is stored. The reservoir 25 can be communicatively connected to the cooling loop of either the first cooling loop 11 or the second cooling loop 12 via the supplementary flow passage 14. [

According to one embodiment, the reservoir 25 may be communicatively connected to the second cooling loop 12 via the supplemental flow passage 14, as illustrated in FIG.

A first diagonal flow path 81 may be connected between the reservoir 25 and the first cooling loop 11 and a first diagonal flow path 81 may be connected to the first cooling loop 11 and the first diagonal flow path 81, A first degassing valve 71 may be disposed. The first degassing valve 71 may be disposed on the downstream side of the charger 22 along the flow direction of the cooling water.

A second degassing passage 82 may be connected between the reservoir 25 and the second cooling loop 12 and a second detaching passage 82 may be branched into two detaching passages 82a and 82b. have. The reservoir 25 may be connected to the first branch passage 51 through the first descaling passage 82a and may be connected to a portion of the first branch passage 51 and the one side degassing passage 82a, A second degassing valve 72 may be disposed. The second degassing valve 72 may be disposed downstream of the first heat exchanger 5. The reservoir 25 may be connected to the second branch passage 52 through the other degassing passage 82b and may be connected to a portion of the second branch passage 52 and the other side degassing passage 82b, A third degassing valve 73 may be disposed. The third detaching valve (73) can be disposed on the downstream side of the electric device (23).

2 is a diagram showing a process in which the first cooling loop 11 and the second cooling loop 12 perform independent cooling operations.

2, the first port 63a of the switching valve 63 is closed and the second port 63b and the third port 63c are opened to open the first cooling loop 11 and the second cooling loop 12 Can be shut off, so that the cooling water can circulate independently in each of the first cooling loop 11 and the second cooling loop 12. As the cooling water circulating through the first cooling loop 11 passes through the battery 21 and the charger 22, the battery 21 and the charger 22 can be cooled. The cooling water circulating through the second cooling loop 12 is selectively supplied to the electric device 23 and the intercooler 5 through the selective operation of the second circulation pump 32 and the selective operation of the third circulation pump 33 The electric device 23 and the intercooler 5 can be selectively cooled. For example, when only the second circulation pump 32 is operated, only the front mechanism 23 can be cooled by passing the cooling water only through the electric device 23, and when only the third circulation pump 33 is operated, Only the intercooler 5 can be cooled by passing through the first circulation pump 5 and the second circulation pump 32 and the third circulation pump 33 are operated together so that the cooling water is supplied to the electric device 23 and the intercooler 5 The electric device 23 and the intercooler 5 can be cooled together.

It is necessary to raise the temperature of the battery 21 to an appropriate temperature under a very low external temperature condition such as cryogenic temperature. 3 is a view showing a process of raising the temperature of the battery 21 as the temperature of the battery 21 is required at a very low temperature.

3, the third port 63c of the switching valve 63 is closed and the first port 63a and the second port 63b are opened to open the first cooling loop 11 and the second cooling loop 12 Can communicate with each other through the first communication passage (61). In this state, as the first circulation pump 31, the second circulation pump 32, and the third circulation pump 33 operate, the first branch passage 51 of the second cooling loop 12, The cooling water that has passed through the flow path 52 can flow to the battery 21 side through the first communication flow path 61. The cooling water passes through the battery 21 bypassing the first radiator 41 and the second radiator 42 so that waste heat of the first heat exchanger 5 as an intercooler can be transmitted to the battery 21 side, The temperature of the battery 21 can be raised efficiently.

The temperature of the battery 21 may rise sharply if the heat of the charger 22 is excessive at the time of charging the battery 21. [ 4 is a view showing a process of performing a cooling operation for the battery 21 to prevent a sudden rise in the temperature of the battery 21 when the battery 21 is charged.

4, the second port 63b of the switching valve 63 is closed and the first port 63a and the third port 63c are opened to open the first cooling loop 11 and the second cooling loop 12 can communicate with each other through the first communication passage 61. The first circulation pump 31 is operated and the second circulation pump 32 and the third circulation pump 33 are not operated so that the first radiator 41 of the first cooling loop 11 is operated, And the second radiator 42 of the second cooling loop 12 can flow through the first communication passage 61 to the battery 21 side. As described above, as the cooling water having passed through the first and second radiators 41 and 42 in parallel passes through the battery 21 and the charger 22, the battery 21 and the charger 22 can be cooled very effectively have. At this time, the cooling water does not pass through the electric device (23) and the first heat exchanger (5) of the second cooling loop (12).

5 is a view showing a process in which the first cooling loop 11 is detached.

5, the first cooling valve 11 and the reservoir 25 can communicate with each other through the first degassing flow path 81 by opening the first degassing valve 71, The bubble of the loop 11 flows toward the reservoir 25 side so that the first cooling loop 11 can be detached. When the pressure of the first cooling loop 11 becomes smaller than the pressure of the second cooling loop 11 through detaching of the first cooling loop 11, a part of the cooling water circulating the second cooling loop 12 The cooling water in the first cooling loop 11 can be replenished by moving to the first cooling loop 11 side via the second communication flow path 62. [

The rest of the configuration and operation are the same as or similar to those of the preceding embodiment, and thus a detailed description thereof will be omitted.

FIG. 6 is a diagram showing a process in which the second cooling loop 12 is detached.

Referring to FIG. 6, the second cooling loop 12 and the reservoir 25 are connected to the second detaching passage 82 by opening the second detaching valve 72 and / or the third detaching valve 73 And the bubble of the second cooling loop 12 flows toward the reservoir 25 side so that the second cooling loop 12 can be detached. When the pressure of the second cooling loop 12 becomes smaller than the pressure of the reservoir 25 through the detaching of the second cooling loop 12, the cooling water of the reservoir 25 flows through the supplementary flow passage 14 to the second The cooling water in the second cooling loop 12 can be replenished by moving to the cooling loop 12 side.

The rest of the configuration and operation are the same as or similar to those of the preceding embodiment, and thus a detailed description thereof will be omitted.

Figure 7 illustrates a thermal management system 10 in accordance with another embodiment of the present invention.

7, the first cooling loop 11 may further include a chiller 91, a connection passage 95 is connected to a part of the first cooling loop 11, a chiller 91 is connected to the first cooling loop 11, 91 are disposed in the connection passage 95. The chiller 91 and the first radiator 41 can be connected in parallel to the first cooling loop 11 and the second switching valve 96 And the cooling water can selectively pass through the chiller 91 by the switching operation of the second switching valve 96. Accordingly, the cooling performance of the battery 21 can be significantly improved as the cooling water passes through the battery 21 through the chiller 91 and the first radiator 41 under a high outdoor temperature condition such as a summer season.

The rest of the configuration and operation are the same as or similar to those of the preceding embodiment, and thus a detailed description thereof will be omitted.

Figure 8 illustrates a thermal management system 10 in accordance with another embodiment of the present invention.

8, the second cooling loop 12 includes a second heat exchanger 92 and the second heat exchanger 92 and the first heat exchanger 5 comprise a second cooling loop 12, As shown in FIG. The second heat exchanger 92 may be a transmission oil cooler (TOC), and the second heat exchanger 92 may be disposed downstream of the first heat exchanger 5. Since the waste heat of the first heat exchanger 91 and the waste heat of the second heat exchanger 92 can be transferred to the battery 21 side, the temperature rising performance of the battery 21 can be significantly improved.

The rest of the configuration and operation are the same as or similar to those of the preceding embodiment, and thus a detailed description thereof will be omitted.

Figure 9 illustrates a thermal management system 10 in accordance with another embodiment of the present invention.

9, the third cooling loop 13 includes a first heat exchanger 93 and a radiator 94 that generate waste heat for raising the temperature of the battery 12, and the first heat exchanger 93 ) May be a water-cooled condenser. The third cooling loop 13 may be a cooling water pipe through which the cooling water passes, and the radiator 94 may discharge heat to the outside by a cooling fan (not shown) adjacent thereto, through which the first heat exchanger 93 The temperature of the cooling water that has been heated by the cooling water can be reduced. The first heat exchanger 93 can be thermally connected to the second cooling loop 12 and in particular the first heat exchanger 93 can be disposed in the second branch flow passage 52 of the second cooling loop 12. [ have. The first heat exchanger 93 and the radiator 94 can effectively cool or raise the temperature of the battery 21. [

The rest of the configuration and operation are the same as or similar to those of the preceding embodiment, and thus a detailed description thereof will be omitted.

10 illustrates a thermal management system 10 in accordance with another embodiment of the present invention.

According to the embodiment of FIG. 10, the first radiator 41 and the second radiator 42 can be integrally combined, and the first cooling loop 11 and the second cooling radiator 41, which pass through the first radiator 41, The second cooling loop 12 passing through the radiator 42 can be configured independently without communicating with each other.

The rest of the configuration and operation are the same as or similar to those of the preceding embodiment, and thus a detailed description thereof will be omitted.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

11: first cooling loop 12: second cooling loop
13: third cooling loop 14: supplementary flow path
21: Battery 22: Charger
23: electric appliance 25: reservoir
31: first circulation pump 32: second circulation pump
33: third circulation pump 41: first radiator
42: second radiator 51: first branch duct
52: second branch passage 61: first communication passage
62: 2nd communication channel 63: switching valve
71: first detaching valve 72: second detaching valve
73: Third detaching valve 81: First detaching channel
82: The second digging euro

Claims (13)

A first cooling loop communicating thermally with respect to the battery, the first cooling loop including a first circulation pump and a first radiator; And
A second cooling loop in thermal communication with the electrical device and the first heat exchanger, the second cooling loop including a second radiator,
Wherein the electrical device and the first heat exchanger are connected in parallel to the second cooling loop. The method according to claim 1,
Wherein the second cooling loop includes a first branch passage and a second branch passage connected in parallel,
Wherein the electric device is disposed in the first branch passage, the first heat exchanger is disposed in the second branch passage, a second circulation pump is disposed in the first branch passage, and the third circulation pump is disposed in the second branch passage, A heat management system for a vehicle in which a pump is disposed. The method according to claim 1,
Wherein the first cooling loop and the second cooling loop are communicably connected through a first communication channel and a second communication channel. The method of claim 3,
Wherein at least one of the first communication passage and the second communication passage includes a switching valve for switching the flow direction of the cooling water between the first cooling loop and the second cooling loop. The method according to claim 1,
Wherein the reservoir is communicatively connected to at least one of the first cooling loop and the second cooling loop. The method of claim 5,
Wherein the second cooling loop includes a reservoir communicatively coupled through a supplemental flow path. The method of claim 6,
A first detergent flow passage is connected between the reverber and the first cooling loop, and the first detaching flow passage has a first detaching valve. The method of claim 7,
The second digging flow path is branched into two digging flow paths and is connected to each of the first branch flow path and the second branch flow path of the second cooling loop, A thermal management system for a vehicle having a gasing valve. The method according to claim 1,
And a third cooling loop is connected to the first heat exchanger. The method of claim 9,
Wherein the first heat exchanger is at least one of a water-cooled intercooler and a water-cooled condenser. The method according to claim 1,
Wherein the second cooling loop further comprises a second heat exchanger and the second heat exchanger is disposed downstream of the first heat exchanger. The method according to claim 1,
Wherein the first cooling loop further comprises a chiller connected in parallel to the first radiator. The method according to claim 1,
Wherein the first radiator and the second radiator are integrally coupled and the first cooling loop passing through the first radiator and the second cooling loop passing through the second radiator are configured independently of each other.

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