Thermal management system and automobile

Abstract

The utility model belongs to the technical field of automobile thermal management, and particularly relates to a thermal management system and an automobile. The heat management system comprises the first cooling system and the second cooling system, the first cooling system is used for cooling the heat exchange medium discharged by the cylinder cover water jacket of the engine, and the cooled heat exchange medium is distributed to the second cooling system, so that integration and combination of the first cooling system and the second cooling system are achieved, and the heat management efficiency is improved. On one hand, after the expansion water tank is communicated with the first cooling system, when the expansion water tank supplements water or removes gas for the first cooling system, water supplementation or gas removal for the second cooling system can be achieved at the same time, and therefore the deployment number of the expansion water tank can be reduced; and on the other hand, the heat exchange medium entering the second cooling system from the first cooling system can be subjected to secondary cooling in the second cooling system and then cools the electric drive system, and therefore the better cooling effect on the electric drive system can be achieved.

Description

Technical Field

[0001] The present application belongs to the field of automotive thermal management technology, and specifically relates to thermal management systems and automobiles. Background Art

[0002] In the automotive field, the engine and electric drive system need to be cooled separately. In the existing solution, relatively independent circulation systems are used for the engine cooling system and the electric drive cooling system, which will cause the two to occupy a larger space when deploying the thermal management system. For example, expansion water tanks need to be deployed separately for the two cooling systems, which will cause the cooling system to occupy a larger space inside the car. Utility Model Content

[0003] One purpose of the invention of the present application is to provide a thermal management system that reduces the overall deployment space of the engine cooling system and the electric drive cooling system by connecting and merging the engine cooling system and the electric drive cooling system.

[0004] Another invention object of the present application is to provide a vehicle, which includes the above-mentioned thermal management system.

[0005] According to an embodiment of the present application, a first aspect provides a thermal management system, the thermal management system comprising:

[0006] A first cooling system, wherein the first cooling system is connected to a cylinder head water jacket of the engine and a cylinder body water jacket of the engine, and the first cooling system is used to cool a heat exchange medium discharged from the cylinder head water jacket and return the heat exchange medium to the cylinder body water jacket;

[0007] a second cooling system, the second cooling system being connected to the first cooling system and the cylinder water jacket, the second cooling system being used to cool the heat exchange medium that is cooled by the first cooling system and then diverted to the second cooling system, the second cooling system being also connected in series with the electric drive system, the second cooling system conveying the heat exchange medium that is cooled by the second cooling system to the electric drive system, and returning the heat exchange medium that has cooled the electric drive system to the cylinder water jacket;

[0008] An expansion water tank is connected to the first cooling system and the cylinder head water jacket respectively.

[0009] In one embodiment, the first cooling system includes a radiator, and the radiator absorbs heat and cools down the heat exchange medium in the first cooling system.

[0010] In one embodiment, the second cooling system includes an electric drive cooler, which cools down the heat exchange medium in the second cooling system, and the electric drive cooler is located outside the radiator.

[0011] In one embodiment, the electric drive system includes a front drive motor electronic control and a rear drive motor electronic control, and the second cooling system is connected to the front drive motor electronic control and the rear drive motor electronic control respectively, and the second cooling system transports heat exchange medium to the front drive motor electronic control and the rear drive motor electronic control respectively.

[0012] In one embodiment, an electromagnetic control valve is provided between the first cooling system and the second cooling system, and the electromagnetic control valve is used to divert the heat exchange medium in the first cooling system to the second cooling system.

[0013] In one embodiment, a first driving element is further provided between the second cooling system and the electromagnetic control valve, and the first driving element is used to draw the heat exchange medium discharged from the electromagnetic control valve into the second cooling system.

[0014] In one embodiment, the thermal management system further includes a third cooling system, wherein the third cooling system is connected to the cylinder head water jacket and the cylinder block water jacket, and the third cooling system is connected to an exhaust gas recirculation cooler and a heater core in sequence.

[0015] In one embodiment, the thermal management system also includes a second driving element, which is connected to the first cooling system, the second cooling system and the third cooling system respectively, and mixes the heat exchange medium in the first cooling system, the heat exchange medium in the second cooling system and the heat exchange medium in the third cooling system and then delivers them to the cylinder water jacket.

[0016] In one embodiment, the expansion water tank is connected to the third cooling system; and / or, the second driving element is a water pump; and / or, the first cooling system is further provided with a thermostat, which is connected to the second driving element and controls the operation of the second driving element.

[0017] According to an embodiment of the present application, a second aspect provides a car, comprising the thermal management system.

[0018] The thermal management system of the present application includes a first cooling system and a second cooling system, wherein the first cooling system is used to cool down the heat exchange medium discharged from the cylinder head water jacket of the engine, and to divert the cooled heat exchange medium to the second cooling system, thereby realizing the integrated connection between the first cooling system and the second cooling system. On the one hand, after the expansion water tank is connected to the first cooling system, when the expansion water tank replenishes water or degasses the first cooling system, it can also replenish water or degas the second cooling system at the same time, thereby reducing the number of expansion water tanks deployed; on the other hand, the heat exchange medium entering the second cooling system from the first cooling system can be cooled down for a second time in the second cooling system and then cool the electric drive system, thereby realizing a better cooling effect on the electric drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a module of a thermal management system in one embodiment of the present application;

[0020] Figure 2 This is a module schematic diagram of a thermal management system in another embodiment of the present application.

[0021] Description of the accompanying drawings:

[0022] 100, first cooling system; 110, radiator; 120, solenoid control valve;

[0023] 130. A second driving element; 140. A thermostat;

[0024] 200, second cooling system; 210, electric drive cooler; 220, first drive element;

[0025] 300, third cooling system; 310, exhaust gas recirculation cooler; 320, heater core;

[0026] 400, expansion tank;

[0027] 510, cylinder head water jacket; 520, cylinder body water jacket;

[0028] 600, electric drive system; 610, front drive motor electronic control; 620, rear drive motor electronic control. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0030] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention.

[0031] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0032] The directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "middle", "longitudinal", "lateral", "horizontal", "inner", "outer", "radial", "circumferential" and the like in this specification are based on the directions or positional relationships shown in the drawings and are only for the convenience of simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the automotive field, the engine and electric drive system need to be cooled separately. In the existing scheme, relatively independent circulation systems are adopted for the engine cooling system and the electric drive cooling system, which will cause the two to occupy a larger space each when deploying the cooling system. For example, expansion water tanks need to be deployed for the two cooling systems respectively, which will cause the cooling system to occupy a larger space inside the car. In order to better solve this problem, the researchers in this application proposed a thermal management system, which can connect and integrate the engine cooling system and the electric drive cooling system, thereby reducing the number of expansion water tanks arranged; in addition, the heat exchange medium after the engine cooling system is cooled can be transported to the electric drive cooling system for secondary cooling and cooling, so as to achieve better heat absorption and cooling effect on the electric drive system.

[0034] like Figure 1 As shown, Figure 1Schematic diagram of a module of a thermal management system in one embodiment of the present application. The thermal management system in this embodiment includes: a first cooling system 100, a second cooling system 200 and an expansion water tank 400, wherein the first cooling system 100 is used to absorb heat and cool the heat exchange medium discharged from the cylinder head water jacket 510 of the engine and then transport it to the cylinder water jacket 520 of the engine, the second cooling system 200 is used to communicate with the first cooling system 100, the second cooling system 200 is used to perform secondary cooling and cooling of the heat exchange medium cooled by the first cooling system 100, and transport the heat exchange medium cooled by the second cooling system 200 to the electric drive system 600, thereby cooling the electric drive system 600, and finally transporting the heat exchange medium discharged from the electric drive system 600 to the cylinder water jacket 520 of the engine; the expansion water tank 400 is connected with the first cooling system 100. Since the first cooling system 100 and the second cooling system 200 are connected, when the expansion water tank 400 replenishes water or degasses the first cooling system 100, it can also replenish water or degas the second cooling system 200 at the same time. In the present application, by connecting the first cooling system 100 and the second cooling system 200, the number of expansion water tanks 400 used can be reduced compared to the independent deployment solution; in addition, by connecting the second cooling system 200 with the first cooling system 100, secondary cooling of the heat exchange medium is achieved, thereby being able to better reduce the temperature of the electric drive system 600.

[0035] Specifically, the first cooling system 100 is connected to the cylinder head water jacket 510 of the engine and the cylinder body water jacket 520 of the engine. The first cooling system 100 is used to cool the heat exchange medium discharged from the cylinder head water jacket 510 and return it to the cylinder body water jacket 520; the second cooling system 200 is connected to the first cooling system 100 and the cylinder body water jacket 520. The second cooling system 200 is used to cool the heat exchange medium that is cooled by the first cooling system 100 and diverted to the second cooling system 200. The second cooling system 200 is also connected in series with the electric drive system 600. The second cooling system 200 transports the heat exchange medium cooled by the second cooling system 200 to the electric drive system 600, and returns the heat exchange medium after cooling the electric drive system 600 to the cylinder body water jacket 520; the expansion water tank 400 is respectively connected to the first cooling system 100 and the cylinder head water jacket 510. The heat exchange medium can be water or the like.

[0036] In this embodiment, the researchers connected the first cooling system 100 for cooling the engine and the second cooling system 200 for cooling the electric drive system 600. The expansion water tank 400 can replenish water or degas the second cooling system 200 while replenishing water or degassing the first cooling system 100, thereby reducing the number of expansion water tanks 400 deployed and reducing the space occupied by the first cooling system 100 and the second cooling system 200 in the car. In addition, the heat exchange medium cooled in the first cooling system 100 can be cooled by the second cooling system 200 for the second time, and the heat exchange medium cooled by the second thermal management system can then cool the electric drive system 600, so that a better heat absorption effect can be achieved for the electric drive system 600.

[0037] In one embodiment, see Figure 1 As shown, the first cooling system 100 includes a radiator 110 , and the radiator 110 absorbs heat and cools down the heat exchange medium in the first cooling system 100 .

[0038] In this embodiment, the researchers set a radiator 110 in the first cooling system 100 to complete the heat absorption and cooling of the first cooling system 100. The radiator 110 can be a tube-fin radiator or a plate radiator. It should be noted that the heat exchange medium after entering the first cooling system 100 will be cooled by the radiator 110, and part of the heat exchange medium after cooling will enter the second cooling system 200 and be cooled again by the second cooling system 200.

[0039] In one embodiment, see Figure 1 As shown, the second cooling system 200 includes an electric drive cooler 210 , which cools down the heat exchange medium in the second cooling system 200 . The electric drive cooler 210 is located outside the radiator 110 .

[0040] In this embodiment, the researchers set an electric drive cooler 210 in the second cooling system 200 to complete the heat absorption and cooling of the heat exchange medium entering the second cooling system 200. That is, the heat exchange medium entering the second cooling system 200 from the first cooling system 100 can be cooled again by the electric drive cooler 210 in the second cooling system 200. The electric drive cooler 210 can be an air-cooled electric drive cooler or a liquid-cooled electric drive cooler. In addition, the researchers deployed the electric drive cooler 210 on the outside of the radiator 110 in the first cooling system 100. The advantage is that on the one hand, the electric drive cooler 210 can be closer to the outside, and the temperature in the external environment can absorb heat and cool the electric drive cooler 210; on the other hand, it can reduce the heat generated in the radiator 110 from radiating to the electric drive cooler 210, affecting the cooling effect of the electric drive cooler 210.

[0041] In one embodiment, see Figure 1 As shown, the electric drive system 600 includes a front drive motor electronic control 610 and a rear drive motor electronic control 620, and the second cooling system 200 is connected to the front drive motor electronic control 610 and the rear drive motor electronic control 620 respectively, and the second cooling system 200 transports heat exchange medium to the front drive motor electronic control 610 and the rear drive motor electronic control 620 respectively.

[0042] In this embodiment, the researchers proposed a solution to cool down the front drive motor electronic control 610 and the rear drive motor electronic control 620 in the electric drive system 600 at the same time. Specifically, the researchers transported the heat exchange medium cooled by the second cooling system 200 to the front drive motor electronic control 610 and the rear drive motor electronic control 620 at the same time, so that the front drive motor electronic control 610 and the rear drive motor electronic control 620 can be cooled down at the same time as much as possible, ensuring that the temperature difference of the heat exchange medium after entering and leaving is as consistent as possible.

[0043] In one embodiment, see Figure 2 As shown, an electromagnetic control valve 120 is provided between the first cooling system 100 and the second cooling system 200 , and the electromagnetic control valve 120 is used to divert the heat exchange medium in the first cooling system 100 to the second cooling system 200 .

[0044] In this embodiment, the researchers set up an electromagnetic control valve 120 to divert the heat exchange medium in the first cooling system 100 to the second cooling system 200. It should be noted that the electromagnetic control valve 120 can be an electromagnetic proportional valve.

[0045] Further, in one embodiment, see Figure 2 As shown, a first driving element 220 is further provided between the second cooling system 200 and the electromagnetic control valve 120, and the first driving element 220 is used to pump the heat exchange medium discharged from the electromagnetic control valve 120 into the second cooling system 200. The first driving element 220 may be an electronic water pump.

[0046] In this embodiment, the researchers set a first driving element 220 between the second cooling system 200 and the electromagnetic control valve 120. The reason is that the heat exchange medium is pumped into the second cooling system 200 through the first driving element 220, thereby reducing the problem of insufficient heat exchange medium in the first cooling system 100 entering the second cooling system 200 due to pressure difference.

[0047] In one embodiment, see Figure 2 As shown, the thermal management system further includes a third cooling system 300 , which is connected to the cylinder head water jacket 510 and the cylinder body water jacket 520 , and is connected to the exhaust gas recirculation cooler 310 and the heater core 320 in sequence.

[0048] In this embodiment, the researchers set an exhaust gas recirculation cooler 310 (EGR cooler) in the third cooling system 300. The exhaust gas generated by the engine can be guided to the cooler through the exhaust gas recirculation cooler 310, and then the exhaust gas is absorbed and cooled by the heat exchange medium. After cooling, the exhaust gas can enter the combustion chamber in the engine again; in addition, the heat exchange medium after absorbing heat can enter the heater core 320, and the heater core 320 can blow the heat of the heat exchange medium into the vehicle, thereby completing the cooling of the heat exchange medium on the one hand, and providing warm air for the vehicle on the other hand.

[0049] Further, in one embodiment, see Figure 2 As shown, the thermal management system also includes a second driving element 130, which is connected to the first cooling system 100, the second cooling system 200 and the third cooling system 300 respectively, and mixes the heat exchange medium in the first cooling system 100, the heat exchange medium in the second cooling system 200 and the heat exchange medium in the third cooling system 300 and then transports them to the cylinder water jacket 520.

[0050] In this embodiment, the researchers set up a second driving element 130 in the thermal management system. The second driving element 130 can mix the heat exchange media discharged from the first cooling system 100, the second cooling system 200 and the third cooling system 300 respectively. By mixing the heat exchange media, the temperature entering the cylinder water jacket 520 can be made more uniform and the temperature fluctuation of the heat exchange medium can be reduced to meet the temperature requirements of the cylinder water jacket 520 during operation.

[0051] In one embodiment, see Figure 2 As shown, the expansion water tank 400 is connected to the third cooling system 300; and / or, the second driving element 130 is a water pump; and / or, the first cooling system 100 is further provided with a thermostat 140, which is connected to the second driving element 130 and controls the operation of the second driving element 130.

[0052] In this embodiment, the researchers connected the expansion water tank 400 to the third cooling system 300 to replenish water or degas the third cold zone system. By directly connecting the expansion water tank 400 to the third cooling system 300, the number of deployed expansion water tanks 400 is reduced.

[0053] In addition, a thermostat 140 is further provided in the first cooling system 100 , wherein the thermostat 140 can obtain the temperature of the heat exchange medium entering the first cooling system 100 , and compare the obtained temperature threshold with a preset threshold, thereby controlling the driving flow of the second driving element 130 .

[0054] The present application also proposes a car, wherein the car includes the above-mentioned thermal management system.

[0055] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A thermal management system, characterized in that: The thermal management system comprises: A first cooling system (100), the first cooling system (100) being connected to a cylinder head water jacket (510) of the engine and a cylinder body water jacket (520) of the engine, the first cooling system (100) being used to cool a heat exchange medium discharged from the cylinder head water jacket (510) and return the heat exchange medium to the cylinder body water jacket (520); a second cooling system (200), the second cooling system (200) being connected to the first cooling system (100) and the cylinder water jacket (520), the second cooling system (200) being used to cool the heat exchange medium that is cooled by the first cooling system (100) and then diverted to the second cooling system (200), the second cooling system (200) being further connected in series with the electric drive system (600), the second cooling system (200) conveying the heat exchange medium that has been cooled by the second cooling system (200) to the electric drive system (600), and returning the heat exchange medium that has cooled the electric drive system (600) to the cylinder water jacket (520); An expansion water tank (400), wherein the expansion water tank (400) is respectively connected to the first cooling system (100) and the cylinder head water jacket (510).

2. The thermal management system according to claim 1, characterized in that: The first cooling system (100) comprises a radiator (110), and the radiator (110) absorbs heat and cools down the heat exchange medium in the first cooling system (100).

3. The thermal management system according to claim 2, characterized in that: The second cooling system (200) comprises an electric drive cooler (210), the electric drive cooler (210) is used to cool down the heat exchange medium in the second cooling system (200), and the electric drive cooler (210) is located outside the radiator (110).

4. The thermal management system according to claim 1, characterized in that: The electric drive system (600) includes a front drive motor electronic control (610) and a rear drive motor electronic control (620), the second cooling system (200) is respectively connected to the front drive motor electronic control (610) and the rear drive motor electronic control (620), and the second cooling system (200) transports heat exchange medium to the front drive motor electronic control (610) and the rear drive motor electronic control (620).

5. The thermal management system according to claim 1, characterized in that: An electromagnetic control valve (120) is provided between the first cooling system (100) and the second cooling system (200), and the electromagnetic control valve (120) is used to divert the heat exchange medium in the first cooling system (100) to the second cooling system (200).

6. The thermal management system according to claim 5, characterized in that: A first driving element (220) is also provided between the second cooling system (200) and the electromagnetic control valve (120), and the first driving element (220) is used to draw the heat exchange medium discharged from the electromagnetic control valve (120) into the second cooling system (200).

7. The thermal management system according to claim 1, characterized in that: The thermal management system further comprises a third cooling system (300), wherein the third cooling system (300) is connected to the cylinder head water jacket (510) and the cylinder body water jacket (520), and the third cooling system (300) is connected to the exhaust gas recirculation cooler (310) and the heater core (320) in sequence.

8. The thermal management system according to claim 7, characterized in that: The thermal management system also includes a second driving element (130), which is connected to the first cooling system (100), the second cooling system (200) and the third cooling system (300) respectively, and mixes the heat exchange medium in the first cooling system (100), the heat exchange medium in the second cooling system (200) and the heat exchange medium in the third cooling system (300) and then transports them to the cylinder water jacket (520).

9. The thermal management system according to claim 8, characterized in that: The expansion water tank (400) is connected to the third cooling system (300); and / or the second driving element (130) is a water pump; and / or the first cooling system (100) is further provided with a thermostat (140), and the thermostat (140) is connected to the second driving element (130) and controls the operation of the second driving element (130).

10. An automobile, characterized in that: The automobile comprises a thermal management system as claimed in any one of claims 1 to 9.

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