Thermal management system and automobile

Abstract

The utility model relates to the technical field of automobile air conditioners, in particular to a heat management system and an automobile. The heat management system comprises a refrigerant loop, a third three-way connector, a replacement equipment part, a first replacement valve part and a battery pack, and when the replacement equipment part is a cold air core body, the first replacement valve part is a first three-way valve; and when the replacement equipment part is a replacement evaporator, the first replacement valve part is a two-way connector. According to the thermal management system and the automobile, the problem that an existing automobile thermal management system generally follows the design concept of a single refrigerant, and due to the customized design based on the refrigerant characteristics, the system needs to be redesigned or refitted when the refrigerant is replaced is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile air conditioning, in particular to a thermal management system and automobile. BACKGROUND

[0002] With the rapid progress of the automobile industry and the continuous innovation of technology, the environmental protection performance of vehicle refrigerants is becoming increasingly stringent. This trend has prompted automobile manufacturers to improve the compatibility of their vehicle thermal management systems with various types of refrigerants. In the traditional automobile development process, the design of the thermal management system is often limited to a specific refrigerant, ignoring the potential system compatibility problems that may arise from future refrigerant changes. However, the current thermal management system architecture based on a specific refrigerant lacks sufficient flexibility and is difficult to switch between different refrigerants. Once a new generation of more environmentally friendly and efficient refrigerant appears in the market, automobile manufacturers who adopt it often need to make significant modifications or redesign the existing thermal management system, which undoubtedly increases production costs and prolongs product iteration cycles. Among them, the secondary circuit thermal management system architecture disclosed in Chinese patent application (application number CN202311170185.6) is the most representative. This system architecture mainly includes a refrigerant circuit, a battery heating / cooling water circuit, a motor cooling water circuit, and a passenger compartment heating / cooling water circuit, which can achieve passenger compartment refrigeration, battery cooling, passenger compartment heat pump heating, passenger compartment heat pump heating with waste heat recovery, battery heating, defogging, and defrosting, etc.

[0003] Existing automobile thermal management systems generally follow the single refrigerant design philosophy, and the thermal management system architecture schemes differ significantly for refrigerants such as R290 and R134a. R290 requires a secondary circuit design to ensure driving safety due to its flammable and explosive characteristics, while R134a has higher safety and is often designed with a direct primary circuit to improve heat exchange efficiency. However, this customized design based on refrigerant characteristics requires redesign or modification of the system when changing refrigerants. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a thermal management system and automobile, thereby solving the problem that existing automobile thermal management systems generally follow the single refrigerant design philosophy, and this customized design based on refrigerant characteristics requires redesign or modification of the system when changing refrigerants.

[0005] According to the first aspect of the present application, a heat management system is provided, which comprises a refrigerant circuit, a third three-way joint, a replacement device part, a first replacement valve part and a battery pack; the refrigerant circuit comprises a compressor, a condenser, a first three-way joint, an evaporator and a second three-way joint connected in sequence; the refrigerant outlet of the condenser is connected with the inlet of the first three-way joint, the first outlet of the first three-way joint is connected with the refrigerant inlet of the evaporator, the refrigerant outlet of the evaporator is connected with the inlet of the second three-way joint, and the first outlet of the second three-way joint is connected with the refrigerant inlet of the condenser through the compressor; the liquid outlet of the evaporator is connected with the inlet of the first replacement valve part through a first connecting pipeline, the outlet of the first replacement valve part is connected with the inlet of the battery pack through a second connecting pipeline, the outlet of the battery pack is connected with the first inlet of the third three-way joint through a third connecting pipeline, and the outlet of the third three-way joint is connected with the liquid inlet of the evaporator; when the replacement device part is a cold air core, the first replacement valve part is a first three-way valve, the liquid outlet of the evaporator is connected with the first inlet of the first three-way valve through the first connecting pipeline, the first outlet of the first three-way valve is connected with the inlet of the battery pack through the second connecting pipeline, the second outlet of the first three-way valve is connected with the inlet of the cold air core through a first replacement pipeline, and the outlet of the cold air core is connected with the second inlet of the third three-way joint through a second replacement pipeline; when the replacement device part is a replacement evaporator, the first replacement valve part is a two-way joint, the liquid outlet of the evaporator is connected with the inlet of the two-way joint through the first connecting pipeline, the outlet of the two-way joint is connected with the inlet of the battery pack through the second connecting pipeline, the second outlet of the first three-way joint is connected with the refrigerant inlet of the replacement evaporator through a third replacement pipeline, and the second outlet of the second three-way joint is connected with the refrigerant outlet of the replacement evaporator through a fourth replacement pipeline.

[0006] In any of the above technical solutions, further, the heat management system further comprises a warm air core; the liquid outlet of the condenser is connected with the inlet of the warm air core and the inlet of the first replacement valve part through a fourth connecting pipeline respectively; the outlet of the warm air core is connected with the liquid inlet of the condenser through a fifth connecting pipeline, and the outlet of the third three-way joint is connected with the liquid inlet of the condenser.

[0007] In any of the above technical solutions, further, the heat management system further comprises a first five-way valve; the third inlet of the first five-way valve is connected with the liquid outlet of the evaporator, the fifth outlet of the first five-way valve is connected with the inlet of the first replacement valve part, and the liquid outlet of the condenser is connected with the fourth inlet of the first five-way valve and the inlet of the warm air core through the fourth connecting pipeline respectively.

[0008] In any of the above technical solutions, further, the thermal management system further comprises a second five-way valve; a first outlet of the second five-way valve is connected with a liquid inlet of the condenser, a second outlet of the second five-way valve is connected with a liquid inlet of the evaporator, a fourth inlet of the second five-way valve is connected with an outlet of the third three-way joint, and a fifth inlet of the second five-way valve is connected with an outlet of the heater core.

[0009] In any of the above technical solutions, further, the thermal management system further comprises a heater, and the heater is arranged on the fourth connecting pipeline.

[0010] In any of the above technical solutions, further, the thermal management system further comprises a motor assembly and a radiator; a second outlet of the first five-way valve is connected with an inlet of the radiator, an outlet of the radiator is connected with an inlet of the motor assembly, and an outlet of the motor assembly is connected with a third inlet of the second five-way valve.

[0011] In any of the above technical solutions, further, the thermal management system further comprises a proportional adjusting pipeline, a fourth three-way joint and a second replacement valve; the proportional adjusting pipeline is connected in parallel with the battery pack; one end of the proportional adjusting pipeline is connected with the second connecting pipeline through the fourth three-way joint, and the other end of the proportional adjusting pipeline is connected with the third connecting pipeline through the second replacement valve; fluid flowing out of the fifth outlet of the first five-way valve can enter the battery pack through the fourth three-way joint, fluid flowing out of the battery pack outlet can enter the proportional adjusting pipeline through the second replacement valve, and fluid flowing out of the proportional adjusting pipeline can re-enter the battery pack through the fourth three-way joint; when the replacement equipment part is a replacement evaporator, the second replacement valve is a second three-way valve; when the replacement equipment part is a heater core, the second replacement valve is a fifth three-way joint.

[0012] In any of the above technical solutions, further, the thermal management system further comprises a second temperature and pressure sensor and a first temperature and pressure sensor; the second temperature and pressure sensor is arranged between the evaporator and the compressor, and the first temperature and pressure sensor is arranged between the condenser and the compressor.

[0013] In any of the above technical solutions, further, the thermal management system further comprises a first electronic expansion valve, a second electronic expansion valve and a liquid storage tank; the first electronic expansion valve is arranged between the evaporator and the condenser, and the liquid storage tank is arranged between the condenser and the first electronic expansion valve; when the replacement equipment part is a replacement evaporator, the second electronic expansion valve is arranged on the third replacement pipeline.

[0014] According to the second aspect of the present application, a vehicle is provided, comprising the thermal management system as described above.

[0015] According to the above technical features, the beneficial effects of the present application are:

[0016] When the thermal management system of the present application is changed from the secondary circuit architecture to the primary circuit architecture, only the first replacement valve part is replaced from the first three-way valve to the two-way joint, then the replacement device part is replaced from the cold air core to the replacement evaporator, and the second outlet of the first three-way joint is connected to the refrigerant inlet of the replacement evaporator through the third replacement pipeline, and the second outlet of the second three-way joint is connected to the refrigerant outlet of the replacement evaporator through the fourth replacement pipeline.

[0017] Conversely, when the thermal management system of the present application is changed from the primary circuit architecture to the secondary circuit architecture, only the first replacement valve part is replaced from the two-way joint to the first three-way valve, then the replacement evaporator is replaced by the cold air core, the outlet of the evaporator is connected to the first inlet of the first three-way valve through the first connecting pipeline, the first outlet of the first three-way valve is connected to the inlet of the battery pack through the second connecting pipeline, the second outlet of the first three-way valve is connected to the inlet of the cold air core through the first replacement pipeline, and the outlet of the cold air core is connected to the second inlet of the third three-way joint through the second replacement pipeline. Then, the third replacement pipeline and the fourth replacement pipeline are removed.

[0018] As described above, the present application realizes the change from the secondary circuit system suitable for R290 refrigerant to the high-efficiency primary circuit system suitable for R134a refrigerant through the pre-installed first three-way joint, second three-way joint and first replacement valve part (replacement of first three-way valve and two-way joint). The thermal management system of the present application can be switched to the secondary circuit system architecture suitable for R290 refrigerant and the primary circuit system architecture suitable for R134a refrigerant without large-scale modification of the system main structure, and can realize the switching of the system architecture for different refrigerants.

[0019] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 The structure schematic diagram of the thermal management system of the present application under the secondary circuit architecture is shown;

[0022] Figure 2 Fig. 1 shows a schematic diagram of a heat management system according to an embodiment of the present application;

[0023] Figure 3 Fig. 2 shows a schematic diagram of a heat management system according to an embodiment of the present application; Figure 2 Fig. 3 shows a schematic diagram of an alternative heat management system according to an embodiment of the present application.

[0024] Fig. 1 shows a schematic diagram of a heat management system according to an embodiment of the present application; Fig. 2 shows a schematic diagram of a heat management system according to an embodiment of the present application; Fig. 3 shows a schematic diagram of an alternative heat management system according to an embodiment of the present application. Fig. 4 shows a schematic diagram of a heat management system according to an embodiment of the present application.

[0025] 1 - compressor; 2 - condenser; 3 - evaporator; 4.1 - first electronic expansion valve; 4.2 - second electronic expansion valve; 5 - liquid accumulator; 6.1 - first pump; 6.2 - second pump; 6.3 - third pump; 7.1 - radiator; 7.2 - radiator fan; 8.1 - first five-way valve; 8.2 - second five-way valve; 8.3 - six-way valve; 9.1 - heater core fan; 9.2 - replacement equipment part; 9.3 - heater core; 11 - motor assembly; 12 - battery pack; 13.1 - first expansion tank; 13.2 - second expansion tank; 14 - heater; 15 - second three-way valve; 16 - first three-way valve. DETAILED DESCRIPTION

[0026] The following detailed description is presented to aid in understanding the method, apparatus and / or system described herein. It is not intended to limit the method, apparatus and / or system described herein to the details described. Rather, it is intended to cover any modifications, variations, and equivalents that are within the scope of the present application, as defined by the claims. For instance, it is intended that the method, apparatus and / or system described herein can be performed by different sequences of operations, as will be apparent to those skilled in the art. In addition, well-known features have not been described in detail to avoid obscuring aspects of the present application.

[0027] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the method, apparatus and / or system to those skilled in the art. Further, the described features can be combined in any suitable manner in various examples.

[0028] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, "on top of" another element, or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, on top of, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on", "directly connected to", "directly coupled to", "directly adjacent to", "directly on top of", or "directly covering" another element, there are no other elements interposed therebetween.

[0029] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.

[0030] Although terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, a component, assembly, region, layer or section referred to as a first component, assembly, region, layer or section in one example described herein can also be referred to as a second component, assembly, region, layer or section in another example without departing from the teachings of the examples.

[0031] For ease of description, spatial relationship terms, such as "on", "upper", "beneath", and "lower", can be used herein to describe the relationship of one element to another element as illustrated in the figures. Such spatial relationship terms can be intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, a element described as on "top" or "upper" of another element would then be oriented on "bottom" or "lower" of the other element. Thus, the term "on" can encompass both an "on" and "under" orientation depending on the spatial orientation of the device. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and an appropriate modification to the spatial relationship terminology would be made to accommodate those orientations.

[0032] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" are listed means the stated features, numbers, operations, components, elements, and / or combinations thereof are present, but do not preclude the presence or addition of one or more other features, numbers, operations, components, elements, and / or combinations thereof.

[0033] Variations in the shapes illustrated in the drawings can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in shapes that occur as a result of manufacturing processes and / or tolerances.

[0034] Features of the examples described herein can be combined with one another as would be apparent to one of ordinary skill in the art after understanding the disclosure provided herein. Furthermore, although examples described herein have a variety of configurations, other configurations are possible as would be apparent to one of ordinary skill in the art after understanding the disclosure provided herein.

[0035] Prior to the present application, existing automotive thermal management systems generally follow a single refrigerant design concept. For refrigerants such as R290 and R134a, the thermal management system architecture scheme differs significantly. R290 requires a secondary circuit design to ensure driving safety due to its flammable and explosive characteristics, while R134a has higher safety and is mostly designed with a direct primary circuit to improve heat exchange efficiency. However, this customized design based on the characteristics of the refrigerant leads to the need to redesign or retrofit the system when the refrigerant is replaced.

[0036] In view of this, the first aspect of the present application provides a thermal management system, thereby solving the problem that existing automotive thermal management systems generally follow a single refrigerant design concept, and this customized design based on the characteristics of the refrigerant leads to the need to redesign or retrofit the system when the refrigerant is replaced. The following refers to the drawings to describe the thermal management system according to some embodiments of the present application. Figures 1 to 3 A thermal management system according to some embodiments of the present application is described.

[0037] As Figure 1 and Figure 2As shown, the thermal management system of this application includes a refrigerant circuit, a third three-way connector 40, a replacement device section 9.2, a first replacement valve section 10, and a battery pack 12. The refrigerant circuit includes a compressor 1, a condenser 2, a first three-way connector 16, an evaporator 3, and a second three-way connector 15 connected in sequence. The refrigerant outlet of the condenser 2 is connected to the inlet of the first three-way connector 16, the first outlet of the first three-way connector 16 is connected to the refrigerant inlet of the evaporator 3, the refrigerant outlet of the evaporator 3 is connected to the inlet of the second three-way connector 15, and the first outlet of the second three-way connector 15 is connected to the refrigerant inlet of the condenser 2 via the compressor 1. The liquid outlet of the evaporator 3 is connected to the inlet of the first replacement valve section 10 via a first connecting pipe 61, the outlet of the first replacement valve section 10 is connected to the inlet of the battery pack 12 via a second connecting pipe 62, the outlet of the battery pack 12 is connected to the first inlet of the third three-way connector 40 via a third connecting pipe 63, and the outlet of the third three-way connector 40 is connected to the liquid inlet of the evaporator 3.

[0038] like Figure 1 As shown, when the replacement device 9.2 is a cold air core, the first replacement valve 10 is a first three-way valve. The liquid outlet of the evaporator 3 is connected to the first inlet of the first three-way valve through the first connecting pipe 61. The first outlet of the first three-way valve is connected to the inlet of the battery pack 12 through the second connecting pipe 62. The second outlet of the first three-way valve is connected to the inlet of the cold air core through the first replacement pipe 51. The outlet of the cold air core is connected to the second inlet of the third three-way connector 40 through the second replacement pipe 52.

[0039] like Figure 2 As shown, when the replacement device section 9.2 is for replacing the evaporator, the first replacement valve section 10 is a two-way connector. The liquid outlet of the evaporator 3 is connected to the inlet of the two-way connector through the first connecting pipe 61, and the outlet of the two-way connector is connected to the inlet of the battery pack 12 through the second connecting pipe 62. The second outlet of the first three-way connector 16 is connected to the refrigerant inlet of the replacement evaporator through the third replacement pipe 53, and the second outlet of the second three-way connector 15 is connected to the refrigerant outlet of the replacement evaporator through the fourth replacement pipe 54.

[0040] In other words, when the thermal management system of this application is changed from a secondary loop architecture to a primary loop architecture, it is only necessary to replace the first replacement valve section 10 with a two-way connector instead of the first three-way valve, then replace the replacement device section 9.2 with a replacement evaporator instead of a cold air core, and then connect the second outlet of the first three-way connector 16 to the refrigerant inlet of the replacement evaporator through the third replacement pipe 53, and connect the second outlet of the second three-way connector 15 to the refrigerant outlet of the replacement evaporator through the fourth replacement pipe 54.

[0041] Conversely, when changing from a primary loop architecture to a secondary loop architecture, only the first replacement valve part 10 is replaced by a first three-way valve, and then the replacement evaporator is replaced by a cooling core, the outlet of the evaporator 3 is connected to the first inlet of the first three-way valve through a first connecting pipeline 61, the first outlet of the first three-way valve is connected to the inlet of the battery pack 12 through a second connecting pipeline 62, the second outlet of the first three-way valve is connected to the inlet of the cooling core through a first replacement pipeline 51, and the outlet of the cooling core is connected to the second inlet of the third three-way joint 40 through a second replacement pipeline 52. Then, the third replacement pipeline 53 and the fourth replacement pipeline 54 are removed.

[0042] As described above, the present application realizes the change from a secondary loop system suitable for R290 refrigerant to a high-efficiency primary loop system suitable for R134a refrigerant by pre-installing the first three-way joint 16, the second three-way joint 15, and the first replacement valve part 10 (replacement of the first three-way valve and the two-way joint). The thermal management system of the present application can be switched to the secondary loop system suitable for R290 refrigerant and the primary loop system suitable for R134a refrigerant without large-scale modification of the system body structure, and can realize the switching of the system architecture for different refrigerants.

[0043] In the embodiment of the present application, further, the thermal management system further comprises a heating core 9.3. The outlet of the condenser 2 is connected to the inlet of the heating core 9.3 and the inlet of the first replacement valve part 10 through a fourth connecting pipeline 64, respectively. The outlet of the heating core 9.3 is connected to the liquid inlet of the condenser 2 through a fifth connecting pipeline 65, and the outlet of the third three-way joint 40 is connected to the liquid inlet of the condenser 2.

[0044] In the embodiment of the present application, further, as shown in Figure 1 and Figure 2 , the thermal management system further comprises a first five-way valve 8.1 and a heater 14. The third inlet of the first five-way valve 8.1 is connected to the outlet of the evaporator 3, the fifth outlet of the first five-way valve 8.1 is connected to the inlet of the first replacement valve part 10, and the outlet of the condenser 2 is connected to the fourth inlet of the first five-way valve 8.1 and the inlet of the heating core 9.3 through a fourth connecting pipeline 64, respectively. The heater 14 is arranged on the fourth connecting pipeline 64.

[0045] In the embodiment of the present application, further, as shown in Figure 1 and Figure 2 , the thermal management system further comprises a second five-way valve 8.2. Among them, the first outlet of the second five-way valve 8.2 is connected to the liquid inlet of the condenser 2, the second outlet of the second five-way valve 8.2 is connected to the liquid inlet of the evaporator 3, the fourth inlet of the second five-way valve 8.2 is connected to the outlet of the third three-way joint 40, and the fifth inlet of the second five-way valve 8.2 is connected to the outlet of the heating core 9.3.

[0046] In the embodiment of the present application, further, as shown in Figure 1 and Figure 2 , the heat management system further comprises a motor assembly 11 and a radiator 7.1. The second outlet of the first five-way valve 8.1 is connected with the inlet of the radiator 7.1, the outlet of the radiator 7.1 is connected with the inlet of the motor assembly 11, and the outlet of the motor assembly 11 is connected with the third inlet of the second five-way valve 8.2.

[0047] In the embodiment of the present application, further, as shown in Figure 1 and Figure 2 , the heat management system further comprises a second temperature pressure sensor and a first temperature pressure sensor. The second temperature pressure sensor is arranged between the evaporator 3 and the compressor 1, and the first temperature pressure sensor is arranged between the condenser 2 and the compressor 1.

[0048] In the embodiment of the present application, further, as shown in Figure 1 and Figure 2 , the heat management system further comprises a first electronic expansion valve 4.1, a second electronic expansion valve 4.2 and a liquid accumulator 5. The first electronic expansion valve 4.1 is arranged between the evaporator 3 and the condenser 2, and the liquid accumulator 5 is arranged between the condenser 2 and the first electronic expansion valve 4.1.

[0049] In the embodiment of the present application, further, as shown in Figure 1 , when the replacement device part 9.2 is a replacement evaporator, the second electronic expansion valve 4.2 is arranged on the third replacement pipeline 53. That is to say, when the heat management system of the present application is changed from a secondary circuit architecture to a primary circuit architecture, the first replacement valve part 10 is replaced from a first three-way valve to a two-way joint, then the replacement device part 9.2 is replaced from a cold air core to a replacement evaporator, the second outlet of the first three-way joint 16 is connected with the refrigerant inlet of the replacement evaporator through the third replacement pipeline 53, the second outlet of the second three-way joint 15 is connected with the refrigerant outlet of the replacement evaporator through the fourth replacement pipeline 54, and the second electronic expansion valve 4.2 is arranged on the third replacement pipeline 53. That is to say, when the third replacement pipeline 53 and the fourth replacement pipeline 54 are arranged, the second electronic expansion valve 4.2 is additionally arranged between the first three-way joint 16 and the replacement evaporator.

[0050] In the embodiment of the present application, further, as shown in Figure 2 and Figure 2As shown, the thermal management system further comprises a proportional adjusting pipeline 70, a fourth three-way joint 30 and a second replacement valve part 20. The proportional adjusting pipeline 70 is connected in parallel with the battery pack 12; one end of the proportional adjusting pipeline 70 is connected with the second connecting pipeline 62 through the fourth three-way joint 30, and the other end of the proportional adjusting pipeline 70 is connected with the third connecting pipeline 63 through the second replacement valve part 20. The fluid flowing out of the fifth outlet of the first five-way valve 8.1 can enter the battery pack 12 through the fourth three-way joint 30, the fluid flowing out of the battery pack 12 can enter the proportional adjusting pipeline 70 through the second replacement valve part 20, and the fluid flowing out of the proportional adjusting pipeline 70 can enter the battery pack 12 again through the fourth three-way joint 30, so as to form the battery self-circulating water loop.

[0051] When the replacement device part 9.2 is a replacement evaporator, the second replacement valve part 20 is a second three-way valve; when the replacement device part 9.2 is a cold air core, the second replacement valve part 20 is a fifth three-way joint. That is, when the replacement device part 9.2 is a cold air core, the second replacement valve part 20 is a fifth three-way joint, and the water temperature of the battery self-circulating water loop is adjusted by adjusting the proportion of the first outlet and the second outlet of the first three-way valve (the first replacement valve part 10). When the replacement device part 9.2 is a replacement evaporator, the second replacement valve part 20 is a second three-way valve, and the water temperature of the battery self-circulating water loop is adjusted by adjusting the proportion of the first outlet and the second outlet of the second three-way valve.

[0052] It should be noted here that the first three-way valve and the second three-way valve can be the same product.

[0053] When the thermal management system of the present application is changed from a secondary loop architecture to a primary loop architecture, the first replacement valve part 10 is replaced by a two-way joint from a first three-way valve, then the replacement device part 9.2 is replaced by a replacement evaporator from a cold air core, then the second outlet of the first three-way joint 16 is connected with the refrigerant inlet of the replacement evaporator through a third replacement pipeline 53, the second outlet of the second three-way joint 15 is connected with the refrigerant outlet of the replacement evaporator through a fourth replacement pipeline 54, and a second electronic expansion valve 4.2 is installed on the third replacement pipeline 53. Then the first three-way valve (which can be the same product as the second three-way valve) is replaced, and the fifth three-way joint (the second replacement valve part 20) is replaced (installed at the position of the second replacement valve part 20).

[0054] That is, when the thermal management system of the present application is changed from a secondary loop architecture to a primary loop architecture (when the replacement device part 9.2 is a replacement evaporator), the third replacement pipeline 53 and the fourth replacement pipeline 54 are installed at the same time, and a second electronic expansion valve 4.2 is additionally added between the first three-way joint 16 and the replacement evaporator, and the first three-way valve that is removed is replaced by the fifth three-way joint (the second replacement valve part 20).

[0055] In addition, in the embodiments of the present application, as shown in Figure 1 Figure 2 Figure 3 In addition, in the embodiments of the present application, as shown in

[0056] The main working principle of the thermal management system of the present application is as follows:

[0057] 1. Working principle of refrigeration mode:

[0058] Refrigerant circuit: system scheme one (secondary circuit when the replacement device part 9.2 is a cold air core):

[0059] The high-temperature and high-pressure refrigerant discharged from the compressor 1 is cooled and condensed into a supercooled state through the condenser 2 (water-cooled condenser 2), and then is throttled and depressurized into low-temperature and low-pressure refrigerant through the first electronic expansion valve 4.1, and enters the evaporator 3 after controlling the flow through the first electronic expansion valve 4.1, absorbs heat, and returns to the compressor 1, completing a complete cycle. In the circulation process, the excess refrigerant in the circuit is stored in the liquid storage tank 5 after being adjusted by the first electronic expansion valve 4.1.

[0060] Refrigerant circuit: system scheme two (primary circuit when the replacement device part 9.2 is a replacement evaporator):

[0061] Battery + Cabin Cooling Loop: System Solution One (Secondary Loop when the replacement device part 9.2 is a cooling core): The low-temperature refrigerant liquid from the evaporator 3 enters from the third inlet of the first five-way valve 8.1, flows out from the fifth outlet, and then is divided into two paths after passing through the first three-way valve (the first replacement valve part 10, which is a first proportional three-way valve at this time). One path of the refrigerant liquid enters the cooling core and exchanges heat with the hot air from the passenger cabin. The other path of the refrigerant liquid is pressurized by the third pump 6.3 and then flows through the battery pack 12 for cooling. The two paths of the refrigerant liquid are combined and then enter from the fourth inlet of the second five-way valve 8.2, flow out from the second outlet, and then are pressurized by the first pump 6.1 and flow back to the evaporator 3 to complete the cycle. A core fan 9.1 can be provided beside the cooling core to increase the heat exchange efficiency.

[0062] Battery + Cabin Cooling Loop: System Solution Two (Primary Loop when the replacement device part 9.2 is a replacement evaporator): Cabin cooling is directly completed through the refrigerant circuit.

[0063] The low-temperature refrigerant liquid from the evaporator 3 enters from the third inlet of the first five-way valve 8.1, flows out from the fifth outlet, and then is combined with the battery self-circulating water and pressurized by the third pump 6.3 to flow to the battery pack 12. Then, the refrigerant liquid flows through the first three-way valve (the second replacement valve part 20, which is the original first three-way valve that has been replaced), enters from the fourth inlet of the second five-way valve 8.2, flows out from the second outlet, and then is pressurized by the first pump 6.1 to flow back to the evaporator 3 to complete the cycle.

[0064] Motor Cooling Loop: System Solution One and System Solution Two: The cooling water flowing through the motor assembly 11 enters from the third inlet of the first five-way valve 8.1, flows out from the first outlet, is pressurized by the second pump 6.1, and then flows into the condenser 2 to absorb heat. Then, the cooling water enters from the fourth inlet of the first five-way valve 8.1, flows out from the second outlet, flows into the radiator 7.1 to release heat, and then returns to the motor assembly 11 to complete the cycle. A radiator fan 7.2 can be provided beside the radiator 7.1 to increase the heat exchange efficiency.

[0065] 2. Heat Pump Heating and Waste Heat Recovery Principle:

[0066] Refrigerant Circuit: High-temperature and high-pressure refrigerant from the compressor 1, is cooled to a supercooled liquid by the condenser 2, is throttled and depressurized by the first electronic expansion valve 4.1, absorbs heat in the evaporator 3, and then returns to the compressor 1 to complete the cycle.

[0067] Battery Heating + Cabin Heating + Motor Cooling Loop: System Solution One and System Solution Two:

[0068] The high-temperature refrigerant flowing out of the condenser 2 is heated by the heater 14 and then divided into two paths. One path flows into the heating core 9.3 and exchanges heat with the air in the passenger cabin. The other path converges with the battery self-circulation water through the fourth inlet of the first five-way valve 8.1, and then flows through the battery pack 12 under the pressure of the third pump 6.3 to heat the battery pack 12. Then, the heated battery pack 12 flows into the fourth inlet of the second five-way valve 8.2 through the second inlet of the first five-way valve 8.1, and then flows out of the first outlet of the second five-way valve 8.2. Finally, the heated battery pack 12 flows back to the condenser 2 through the second pump 6.2 to complete the circulation.

[0069] The low-temperature refrigerant flowing out of the evaporator 3 flows into the third inlet of the first five-way valve 8.1, and then flows out of the second outlet of the first five-way valve 8.1. Then, the low-temperature refrigerant successively flows through the radiator 7.1 and the motor assembly 11 to absorb heat, and then flows into the third inlet of the second five-way valve 8.2. Then, the low-temperature refrigerant flows out of the second outlet of the second five-way valve 8.2, and then flows back to the evaporator 3 through the first pump 6.1 to complete the circulation.

[0070] In addition, in the embodiment of the present application, the thermal management system further comprises a second expansion tank 13.2 arranged between the first outlet of the second five-way valve 8.2 and the second pump 6.2, and a first expansion tank 13.1 arranged between the second outlet of the second five-way valve 8.2 and the first pump 6.1.

[0071] In summary, the thermal management system of the present application comprises a refrigerant circuit, a battery heating / cooling water circuit, a motor cooling water circuit, and a passenger cabin heating / cooling water circuit, which can realize the main working modes of passenger cabin refrigeration, battery cooling, passenger cabin heat pump heating, passenger cabin heat pump heating with waste heat recovery, battery heating, defrosting, and defogging.

[0072] When the thermal management system of the present application is changed from a secondary circuit architecture to a primary circuit architecture (when the replacement device part 9.2 is replaced by a replacement evaporator), the third replacement pipeline 53 and the fourth replacement pipeline 54 are installed, and the second electronic expansion valve 4.2 is additionally arranged between the first three-way joint 16 and the replacement evaporator. In addition, the first three-way valve is replaced by the fifth three-way joint (the second replacement valve part 20).

[0073] As described above, the present application realizes the change from the secondary circuit system suitable for R290 refrigerant to the high-efficiency primary circuit system suitable for R134a refrigerant by the pre-installed first three-way joint 16, the second three-way joint 15, and the first replacement valve part 10 (replacement of the first three-way valve and the two-way joint). The thermal management system of the present application can be switched to the secondary circuit system suitable for R290 refrigerant and the primary circuit system suitable for R134a refrigerant without large-scale modification of the system main structure, and can realize the switching of the system architecture for different refrigerants.

[0074] The existing automobile thermal management system generally follows the single refrigerant design concept. For refrigerants such as R290 and R134a, the thermal management system architecture scheme is significantly different. R290 needs to use a secondary circuit design to ensure driving safety due to its flammable and explosive characteristics; while R134a has higher safety and is mostly designed with a direct primary circuit to improve heat exchange efficiency. However, this customized design based on the characteristics of the refrigerant requires re-design or modification of the system when the refrigerant is replaced. In contrast, the present application can be compatible with R290 and R134a refrigerants, without the need for large-scale modification of the system main structure, to achieve system architecture switching for different refrigerants. This not only reduces the direct cost of replacing the refrigerant, but also significantly shortens the system adjustment period, showing high flexibility and scalability.

[0075] The second aspect of the present application provides an automobile comprising the thermal management system as described above.

[0076] Finally, it should be noted that the above-described embodiments are only specific implementations of the present application, which are used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can make modifications or easily think of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed by the present application, or make equivalent replacements to some technical features. These modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application.

Claims

1. A thermal management system, characterized by, The heat management system comprises a refrigerant circuit, a third three-way joint, a replacement device part, a first replacement valve part and a battery pack; The refrigerant circuit comprises a compressor, a condenser, a first three-way joint, an evaporator and a second three-way joint connected in sequence; a refrigerant outlet of the condenser is connected with an inlet of the first three-way joint, a first outlet of the first three-way joint is connected with a refrigerant inlet of the evaporator, a refrigerant outlet of the evaporator is connected with an inlet of the second three-way joint, and a first outlet of the second three-way joint is connected with a refrigerant inlet of the condenser through the compressor; An outlet of the evaporator is connected with an inlet of the first replacement valve part through a first connecting pipeline, an outlet of the first replacement valve part is connected with an inlet of the battery pack through a second connecting pipeline, an outlet of the battery pack is connected with a first inlet of the third three-way joint through a third connecting pipeline, and an outlet of the third three-way joint is connected with an inlet of the evaporator. When the replacement device part is a cold air core, the first replacement valve part is a first three-way valve, an outlet of the evaporator is connected with a first inlet of the first three-way valve through a first connecting pipeline, a first outlet of the first three-way valve is connected with an inlet of the battery pack through a second connecting pipeline, a second outlet of the first three-way valve is connected with an inlet of the cold air core through a first replacement pipeline, and an outlet of the cold air core is connected with a second inlet of the third three-way joint through a second replacement pipeline. When the replacement device part is a replacement evaporator, the first replacement valve part is a two-way joint, an outlet of the evaporator is connected with an inlet of the two-way joint through a first connecting pipeline, an outlet of the two-way joint is connected with an inlet of the battery pack through a second connecting pipeline, a second outlet of the first three-way joint is connected with a refrigerant inlet of the replacement evaporator through a third replacement pipeline, and a second outlet of the second three-way joint is connected with a refrigerant outlet of the replacement evaporator through a fourth replacement pipeline.

2. The thermal management system of claim 1, wherein, The heat management system further comprises a warm air core; An outlet of the condenser is connected with an inlet of the warm air core and an inlet of the first replacement valve part through a fourth connecting pipeline respectively; An outlet of the warm air core is connected with an inlet of the condenser through a fifth connecting pipeline, and an outlet of the third three-way joint is connected with the inlet of the condenser.

3. The thermal management system of claim 2, wherein, The heat management system further comprises a first five-way valve; A third inlet of the first five-way valve is connected with an outlet of the evaporator, a fifth outlet of the first five-way valve is connected with an inlet of the first replacement valve part, and an outlet of the condenser is connected with a fourth inlet of the first five-way valve and an inlet of the warm air core through the fourth connecting pipeline respectively.

4. The thermal management system of claim 3, wherein, The heat management system further comprises a second five-way valve; A first outlet of the second five-way valve is connected with an inlet of the condenser, a second outlet of the second five-way valve is connected with an inlet of the evaporator, a fourth inlet of the second five-way valve is connected with an outlet of the third three-way joint, and a fifth inlet of the second five-way valve is connected with an outlet of the warm air core.

5. The thermal management system of claim 3, wherein, The heat management system further comprises a heater, which is arranged in the fourth connecting pipeline.

6. The thermal management system of claim 4, wherein, The heat management system further comprises a motor assembly and a radiator; The second outlet of the first five-way valve is connected with the inlet of the radiator, the outlet of the radiator is connected with the inlet of the motor assembly, and the outlet of the motor assembly is connected with the third inlet of the second five-way valve.

7. The thermal management system of claim 3, wherein, The heat management system further comprises a proportional adjusting pipeline, a fourth three-way joint and a second replacement valve part; The proportional adjusting pipeline is connected with the battery pack in parallel; One end of the proportional adjusting pipeline is connected with the second connecting pipeline through the fourth three-way joint, and the other end of the proportional adjusting pipeline is connected with the third connecting pipeline through the second replacement valve part; The fluid flowing out of the fifth outlet of the first five-way valve can enter the battery pack through the fourth three-way joint, the fluid flowing out of the battery pack outlet can enter the proportional adjusting pipeline through the second replacement valve part, and the fluid flowing out of the proportional adjusting pipeline can enter the battery pack through the fourth three-way joint again; When the replacement equipment part is a replacement evaporator, the second replacement valve part is a second three-way valve; When the replacement equipment part is a cold air core, the second replacement valve part is a fifth three-way joint.

8. The thermal management system of claim 1, wherein, The heat management system further comprises a second temperature and pressure sensor and a first temperature and pressure sensor; The second temperature and pressure sensor is arranged between the evaporator and the compressor, and the first temperature and pressure sensor is arranged between the condenser and the compressor.

9. The thermal management system of claim 3, wherein, The heat management system further comprises a first electronic expansion valve, a second electronic expansion valve and a liquid storage tank; The first electronic expansion valve is arranged between the evaporator and the condenser, and the liquid storage tank is arranged between the condenser and the first electronic expansion valve; When the replacement equipment part is a replacement evaporator, the second electronic expansion valve is arranged on the third replacement pipeline.

10. An automobile characterized by comprising: The heat management system as claimed in any one of claims 1-9.

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