Vehicle-mounted cold and warm box and vehicle heat management system

Abstract

The invention provides a vehicle-mounted cold and warm box and a vehicle heat management system, and the vehicle heat management system comprises a vehicle heat management waterway which comprises a cold water inlet, a hot water inlet, a cold water outlet and a hot water outlet; a water inlet of the cold-warm box is connected with a first stop valve, a water outlet of the cold-warm box is connected with a first three-way valve, and the other two ends of the first three-way valve are communicated with a cold water inlet and a hot water inlet of the vehicle heat management waterway respectively; and the third three-way valve is respectively connected with the first stop valve and the cold water outlet and the hot water outlet of the vehicle heat management waterway. According to the vehicle-mounted refrigerator, cooling liquid with different temperatures existing in a vehicle can be used as a cold and heat source of the refrigerator, and the semiconductor chilling plate is used for assistance, so that the application temperature range of the vehicle-mounted refrigerator is expanded.

Description

Technical Field

[0001] The present invention relates to the field of vehicle-mounted refrigeration equipment, and in particular to a vehicle-mounted cooling and heating box and a vehicle thermal management system. Background Art

[0002] Existing car refrigerators usually use independent compressors for refrigeration or only use semiconductor refrigeration chips for refrigeration, but there are the following problems:

[0003] 1. Semiconductor refrigerators have a narrow operating range, and the cooling effect is poor, especially in high temperature scenarios.

[0004] 2. Independent compressor system is expensive and has noise problems

[0005] 3. If the refrigeration pipeline of the car air conditioner is used as the cold source of the refrigerator, when the refrigerator is running alone, the compressor speed and cooling capacity will be too large, which may cause frequent starting and stopping. If the electric compressor is to be used to run at a low speed, it will be difficult to control and effectively lubricate it. If multiple evaporators are running together, the low evaporation temperature required by the refrigerator is difficult to guarantee at the same time. In addition, the heating scenario uses PTC or other electric heating forms, which consumes high energy.

[0006] 4. There may be safety issues when the refrigerant directly enters the cabin. This is difficult to achieve in systems using flammable refrigerants or indirect heat exchange.

[0007] In view of this, the present invention provides a vehicle-mounted cold and warm box and a vehicle thermal management system. Summary of the invention

[0008] In response to the problems in the prior art, the present invention provides a vehicle-mounted refrigerator and heater and a vehicle thermal management system, which overcomes the difficulties of the prior art and can utilize the coolant of different temperatures already in the vehicle as the cold and heat source of the refrigerator, and use semiconductor refrigeration sheets as an auxiliary to expand the application temperature range of the vehicle-mounted refrigerator.

[0009] An embodiment of the present invention provides a vehicle-mounted cold and warm box and a vehicle thermal management system, including: a vehicle thermal management water circuit, including a cold water inlet, a hot water inlet, a cold water outlet, and a hot water outlet;

[0010] a cooling and heating box, wherein the water inlet of the cooling and heating box is connected to a first stop valve, the water outlet is connected to a first three-way valve, and the other two ends of the first three-way valve are respectively connected to the cold water inlet and the hot water inlet of the vehicle thermal management water circuit; and

[0011] A third three-way valve is connected to the first stop valve, the cold water outlet and the hot water outlet of the vehicle thermal management water circuit respectively.

[0012] Preferably, the vehicle thermal management water circuit includes:

[0013] A battery pack;

[0014] a compressor;

[0015] a first heat exchanger for a water-cooled condenser;

[0016] a second heat exchanger for the cabin heating core;

[0017] a third heat exchanger for the cabin evaporator;

[0018] a fourth heat exchanger for cooling the battery pack;

[0019] A second three-way valve is respectively connected to the battery pack, the second three-way node and the first four-way node, the second three-way node is also connected to the first three-way valve and the third three-way node, the first four-way node is also respectively connected to the first three-way valve, the first heat exchange pipeline of the fourth heat exchanger and the heat exchange pipeline of the motor assembly.

[0020] Preferably, it also includes:

[0021] a fourth three-way valve, further connected to the second heat exchanger, an auxiliary heating element and a first three-way node, respectively; the first three-way node further connected to the battery pack and a third three-way valve, respectively; the third three-way node further connected to the second heat exchanger and a fifth three-way node, respectively; the fifth three-way node further connected to a heat exchange pipeline of the motor assembly and a first heat exchange pipeline of the first heat exchanger; and

[0022] A fifth three-way valve is respectively connected to the heat exchange pipeline of the motor assembly, the auxiliary heating element, and the first heat exchange pipeline of the first heat exchanger; the exhaust end of the compressor is connected to the second pipeline of the first heat exchanger; the suction end is respectively connected to the second heat exchange pipelines of the third heat exchanger and the fourth heat exchanger; the second heat exchange pipelines of the third heat exchanger and the fourth heat exchanger are respectively connected to the second pipeline of the first heat exchanger.

[0023] Preferably, the motor assembly heat exchange pipeline comprises:

[0024] a radiator;

[0025] a sixth three-way valve, the sixth three-way valve being connected to the radiator and the first four-way node respectively;

[0026] a sixth three-way node, connected to the fifth three-way node, a motor controller and the sixth three-way valve respectively, and a second stop valve is connected in series between the sixth three-way node and the fifth three-way node;

[0027] a second four-way node, connected to the radiator, a driving motor, a fifth three-way valve and a seventh three-way valve respectively, wherein the seventh three-way valve is also connected to the first heat exchange pipeline of the fourth heat exchanger and the third three-way valve respectively;

[0028] An on-board charger has two ends connected to the motor controller and the drive motor respectively.

[0029] Preferably, when the vehicle-mounted cooling and heating box works in heating mode:

[0030] The first three-way valve is connected only to the water outlet of the cooling and heating box and the second three-way node, and is disconnected from the first four-way node;

[0031] The second three-way valve only connects the battery pack and the second three-way node, and cuts off the connection with the first four-way node;

[0032] The third three-way valve is connected only to the first three-way node and the first stop valve, and is disconnected from the seventh three-way valve;

[0033] The fourth three-way valve maintains three-way communication among the first three-way node, the second heat exchanger and the auxiliary heating element;

[0034] The fifth three-way valve is connected only to the first heat exchange pipeline of the first heat exchanger and the auxiliary heating element, and is disconnected from the second four-way node;

[0035] The sixth three-way valve is connected only to the radiator and the first four-way node, and is cut off from the sixth three-way node, and the second cut-off valve remains cut off.

[0036] Preferably, when the vehicle-mounted refrigerator and heater operates in cooling mode:

[0037] The first three-way valve only connects the water outlet of the cooling and heating box with the first four-way node, and cuts off the connection with the second three-way node;

[0038] The second three-way valve only connects the battery pack and the first four-way node, and cuts off the connection with the second three-way node;

[0039] The third three-way valve maintains three-way communication among the first three-way node, the first stop valve and the seventh three-way valve;

[0040] The fourth three-way valve is connected only to the second heat exchanger and the auxiliary heating element, and is disconnected from the first three-way node;

[0041] The fifth three-way valve is connected only to the first heat exchange pipeline of the first heat exchanger and the auxiliary heating element, and is disconnected from the second four-way node;

[0042] The sixth three-way valve is only connected to the radiator and the sixth three-way node, and is disconnected from the first four-way node, the second stop valve is cut off, and the second stop valve remains connected;

[0043] The seventh three-way valve is connected only to the first heat exchange pipeline of the fourth heat exchanger and the third three-way valve, and cuts off the connection with the second four-way node.

[0044] Preferably, a third water pump is further included, which is connected in series between the second four-way node and the radiator.

[0045] Preferably, it further comprises a first water pump connected in series between the first four-way node and the first heat exchange pipeline of the fourth heat exchanger;

[0046] A second water pump is connected in series between the fifth three-way node and the first heat exchange pipeline of the first heat exchanger.

[0047] Preferably, a first expansion valve is provided at the inlet of the third heat exchanger, and a second expansion valve is provided at the inlet of the second heat exchange pipeline of the fourth heat exchanger.

[0048] Preferably, the cooling and heating box has a built-in semiconductor refrigeration sheet to cool the water inlet of the cooling and heating box; or, the direction of the current is changed to heat the water inlet.

[0049] The vehicle-mounted cold and warm box and vehicle thermal management system of the present invention can utilize the existing coolants of different temperatures in the vehicle as the cold and heat sources of the refrigerator, and use semiconductor refrigeration sheets as an auxiliary to expand the application temperature range of the vehicle-mounted refrigerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0051] Figure 1 It is a schematic diagram of the first vehicle-mounted cold and warm box and vehicle thermal management system of the present invention.

[0052] Figure 2 It is a schematic diagram of a second vehicle-mounted cold and warm box and a vehicle thermal management system of the present invention.

[0053] Figure 3 It is a schematic diagram of the second vehicle-mounted cold and warm box and vehicle thermal management system of the present invention working in heating mode.

[0054] Figure 4 It is a schematic diagram of the second vehicle-mounted cold and warm box and vehicle thermal management system of the present invention working in cooling mode.

[0055] Reference numerals

[0056] 1 Cooling and heating box

[0057] 2 Battery Pack

[0058] 31. First heat exchanger

[0059] 32 Second heat exchanger

[0060] 33 Third heat exchanger

[0061] 34 Fourth heat exchanger

[0062] 35 First expansion valve

[0063] 36 Second expansion valve

[0064] 37 First stop valve

[0065] 38 Second stop valve

[0066] 41 Radiator

[0067] 42 Motor Controller

[0068] 43 Car Charger

[0069] 44 Drive Motor

[0070] 45 Auxiliary heating element

[0071] 5. Compressor

[0072] 61 First three-way valve

[0073] 62 Second three-way valve

[0074] 63 Third three-way valve

[0075] 64 Fourth three-way valve

[0076] 65 Fifth three-way valve

[0077] 71 First three-way node

[0078] 72 Second three-way node

[0079] 73 Third Three-way Node

[0080] 74 Sixth three-way valve

[0081] 75 Fifth Third Link Node

[0082] 76 Sixth three-way node

[0083] 77 Seventh three-way valve

[0084] 78 First four-way node

[0085] 79 Second Four-way Node

[0086] 81 First Water Pump

[0087] 82 Second water pump

[0088] 83 Third water pump DETAILED DESCRIPTION

[0089] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the present application. The present application can also be implemented or applied through other different specific implementation methods, and the details in the present application can also be modified or changed in various ways according to different viewpoints and application systems without departing from the spirit of the present application. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0090] The following is a detailed description of the embodiments of the present application with reference to the accompanying drawings so that those skilled in the art can easily implement the present application. The present application can be embodied in a variety of different forms and is not limited to the embodiments described herein.

[0091] In the representations of the present application, the representations with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the represented specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples represented in the present application and the features of the different embodiments or examples, unless they contradict each other.

[0092] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0093] In order to clearly describe the present application, components irrelevant to the description are omitted, and the same reference symbols are given to the same or similar components throughout the specification.

[0094] Throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0095] When a device is said to be "on" another device, it may be directly on the other device, but there may also be other devices between it. In contrast, when a device is said to be "directly" on another device, there are no other devices between it.

[0096] Although the terms first, second, etc. are used to represent various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface, etc. are represented. Moreover, as used in this article, the singular forms "one", "one" and "the" are intended to also include plural forms, unless there is an opposite indication in the context. It should be further understood that the terms "comprising" and "including" indicate the existence of features, steps, operations, elements, components, projects, kinds, and / or groups, but do not exclude the existence, occurrence or addition of one or more other features, steps, operations, elements, components, projects, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Only when the combination of elements, functions, steps or operations is inherently mutually exclusive in some way, will there be an exception to this definition.

[0097] The technical terms used herein are only used to refer to specific embodiments and are not intended to limit the present application. The singular form used herein also includes the plural form unless the sentence clearly indicates the contrary meaning. The meaning of "including" used in the specification is to specify specific characteristics, regions, integers, steps, operations, elements and / or components, and does not exclude the existence or addition of other characteristics, regions, integers, steps, operations, elements and / or components.

[0098] Although not defined differently, all terms, including technical and scientific terms used herein, have the same meaning as those generally understood by those skilled in the art to which this application belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with the relevant technical literature and the contents of the current disclosure, and unless defined, shall not be overly interpreted as ideal or very formal meanings.

[0099] Figure 1 Schematic diagram of the first vehicle-mounted cooling and heating box and vehicle thermal management system of the present invention. Figure 1As shown, the vehicle-mounted heating and cooling box and vehicle thermal management system of the present invention are characterized in that they include: a vehicle thermal management water circuit 9, a heating and cooling box 1, a first stop valve 37, a first three-way valve 61 and a third three-way valve 63. Among them, the vehicle thermal management water circuit 9 includes a cold water inlet, a hot water inlet, a cold water outlet and a hot water outlet. The water inlet of the heating and cooling box 1 is connected to a first stop valve 37, and the water outlet is connected to the first three-way valve 61. The other two ends of the first three-way valve 61 are respectively connected to the cold water inlet and the hot water inlet of the vehicle thermal management water circuit 9. The third three-way valve 63 is respectively connected to the first stop valve 37, the cold water outlet and the hot water outlet of the vehicle thermal management water circuit 9. The present invention uses the coolant of different temperatures already in the car as the cold and heat source of the refrigerator, and uses semiconductor refrigeration sheets as an auxiliary to expand the application temperature range of the vehicle refrigerator.

[0100] Figure 2 Schematic diagram of the second vehicle-mounted cooling and heating box and vehicle thermal management system of the present invention. Figure 2 As shown, in a preferred embodiment, the vehicle thermal management water circuit 9 includes: a battery pack 2, a compressor 5, a first heat exchanger 31 for a water-cooled condenser, a second heat exchanger 32 for a cabin heating core, a third heat exchanger 33 for a cabin evaporator, a fourth heat exchanger 34 for cooling the battery pack, and a second three-way valve 62. The second three-way valve 62 is respectively connected to the battery pack 2, the second three-way node 72, and the first four-way node 78, the second three-way node 72 is also connected to the first three-way valve 61 and the third three-way node 73, and the first four-way node 78 is also respectively connected to the first three-way valve 61, the first heat exchange pipeline of the fourth heat exchanger 34, and the heat exchange pipeline of the motor assembly, but it is not limited thereto.

[0101] In a preferred embodiment, it further includes: a fourth three-way valve 64 and a fifth three-way valve 65. The fourth three-way valve 64 is also connected to the second heat exchanger 32, an auxiliary heating element 45 and the first three-way node 71 respectively, the first three-way node 71 is also connected to the battery pack 2 and the third three-way valve 63 respectively, the third three-way node 73 is also connected to the second heat exchanger 32 and a fifth three-way node 75 respectively, and the fifth three-way node 75 is also connected to the motor assembly heat exchange pipeline and the first heat exchange pipeline of the first heat exchanger 31 respectively. The fifth three-way valve 65 is respectively connected to the motor assembly heat exchange pipeline, the auxiliary heating element 45, and the first heat exchange pipeline of the first heat exchanger 31, the exhaust end of the compressor 5 is connected to the second pipeline of the first heat exchanger 31, and the suction end is respectively connected to the second heat exchange pipelines of the third heat exchanger 33 and the fourth heat exchanger 34, and the second heat exchange pipelines of the third heat exchanger 33 and the fourth heat exchanger 34 are respectively connected to the second pipeline of the first heat exchanger 31, but it is not limited thereto.

[0102] In a preferred embodiment, the heat exchange pipeline of the motor assembly includes: a radiator 41, a sixth three-way valve 74, a sixth three-way node 76, a second four-way node 79, and an on-board charger 43. Among them, the sixth three-way valve 74 is respectively connected to the radiator 41 and the first four-way node 78. The sixth three-way node 76 is respectively connected to the fifth three-way node 75, a motor controller 42 and the sixth three-way valve 74, and a second stop valve 38 is connected in series between the sixth three-way node 76 and the fifth three-way node 75. When the motor electronic control needs to be cooled or the motor electronic control has residual heat, the second stop valve 38 can be opened. The second four-way node 79 is respectively connected to the radiator 41, a drive motor 44, the fifth three-way valve 65 and the seventh three-way valve 77, and the seventh three-way valve 77 is also respectively connected to the first heat exchange pipeline of the fourth heat exchanger 34 and the third three-way valve 63. The two ends of the on-board charger 43 are respectively connected to the motor controller 42 and the drive motor 44, but it is not limited to this.

[0103] Figure 3 FIG. 1 is a schematic diagram of the second vehicle-mounted cooling and heating box and vehicle thermal management system of the present invention working in the heating mode. Figure 3 As shown, in a preferred embodiment, when the vehicle-mounted cold and warm box works in the heating mode: the first three-way valve 61 is only connected to the water outlet of the cold and warm box 1 and the second three-way node 72, and the connection with the first four-way node 78 is cut off. The second three-way valve 62 is only connected to the battery pack 2 and the second three-way node 72, and the connection with the first four-way node 78 is cut off. The third three-way valve 63 is only connected to the first three-way node 71 and the first stop valve 37, and the connection with the seventh three-way valve 77 is cut off. The fourth three-way valve 64 maintains the three-way interconnection of the first three-way node 71, the second heat exchanger 32 and the auxiliary heating element 45. The fifth three-way valve 65 is only connected to the first heat exchange pipeline of the first heat exchanger 31 and the auxiliary heating element 45, and the connection with the second four-way node 79 is cut off. The sixth three-way valve 74 is only connected to the radiator 41 and the first four-way node 78, and the connection with the sixth three-way node 76 is cut off, and the second stop valve 38 remains cut off, but it is not limited thereto.

[0104] Figure 4 FIG. 1 is a schematic diagram of the second vehicle-mounted heating and cooling box and vehicle thermal management system of the present invention working in cooling mode. Figure 4As shown, in a preferred embodiment, when the vehicle-mounted cooling and heating box works in the cooling mode: the first three-way valve 61 only connects the water outlet of the cooling and heating box 1 and the first four-way node 78, and cuts off the connection with the second three-way node 72. The second three-way valve 62 only connects the battery pack 2 and the first four-way node 78, and cuts off the connection with the second three-way node 72. The third three-way valve 63 maintains the three-way interconnection of the first three-way node 71, the first stop valve 37 and the seventh three-way valve 77. The fourth three-way valve 64 only connects the second heat exchanger 32 and the auxiliary heating element 45, and cuts off the connection with the first three-way node 71. The fifth three-way valve 65 is connected only to the first heat exchange pipeline of the first heat exchanger 31 and the auxiliary heating element 45, and the connection with the second four-way node 79 is cut off. The sixth three-way valve 74 is connected only to the radiator 41 and the sixth three-way node 76, and the connection with the first four-way node 78 is cut off. The second stop valve 38 is cut off, and the second stop valve 38 remains turned on. The seventh three-way valve 77 is connected only to the first heat exchange pipeline of the fourth heat exchanger 34 and the third three-way valve 63, and the connection with the second four-way node 79 is cut off, but not limited to this.

[0105] In a preferred embodiment, a third water pump 83 is further included and connected in series between the second four-way node 79 and the radiator 41, but the present invention is not limited thereto.

[0106] In a preferred embodiment, a first water pump 81 is further included, which is connected in series between the first four-way node 78 and the first heat exchange pipeline of the fourth heat exchanger 34. A second water pump 82 is connected in series between the fifth three-way node 75 and the first heat exchange pipeline of the first heat exchanger 31, but the present invention is not limited thereto.

[0107] In a preferred embodiment, a first expansion valve 35 is provided at the inlet of the third heat exchanger 33, and a second expansion valve 36 is provided at the inlet of the second heat exchange pipeline of the fourth heat exchanger 34, but the present invention is not limited thereto.

[0108] In a preferred embodiment, the cooling and heating box 1 has a built-in semiconductor refrigeration sheet to cool the water inlet of the cooling and heating box 1; or, the direction of the current is changed to heat the water inlet, but not limited to this.

[0109] The present invention can realize cooling of the cold and warm box, simultaneous or separate heating of the battery and the passenger compartment, heating of the passenger compartment, and simultaneous cooling of the battery and the cold and warm box, etc. through the combined switching of the first three-way valve 61, the second three-way valve 62, the third three-way valve 63, the fourth three-way valve 64, and the fifth three-way valve 65.

[0110] The first three-way valve 61, the second three-way valve 62, the third three-way valve 63, the fourth three-way valve 64, the fifth three-way valve 65, the sixth three-way valve 74 and the seventh three-way valve 77 in the present invention are all three-way valves that can switch the connection relationship and can be adjusted in two-way or three-way states (a total of four connection states) in different selective directions. The first three-way node 71, the second three-way node 72, the third three-way node 73, the fifth three-way node 75, and the sixth three-way node 76 are conventional three-way pipelines and do not have a switching function. The first four-way node 78 and the second four-way node 79 are conventional four-way pipelines and do not have a switching function.

[0111] Although there are various types of thermal management systems for new energy vehicles, they generally have a coolant system. For example, when the battery is cooled, there is a coolant with a lower temperature (10-25°C), and when the motor, drive, and engine are cooled, there is a coolant with a higher temperature (40-100°C). And currently, the functional and structural integration of the coolant side is also developing rapidly. The present invention can achieve hot and cold switching by using these cold / hot water sources, and can store cold and heat by relying on the heat capacity of the coolant, and utilize waste heat to achieve energy saving. At the same time, it can significantly reduce the start and stop frequency of the compressor, avoid NVH problems, and have little impact on the operating boundary of the compressor.

[0112] The specific implementation methods of the present invention are as follows:

[0113] like Figure 1 As shown, the first vehicle-mounted cold and warm box and vehicle thermal management system of the present invention include: a vehicle thermal management water circuit 9, a cold and warm box 1, a first stop valve 37, a first three-way valve 61 and a third three-way valve 63. Among them, the vehicle thermal management water circuit 9 includes a cold water inlet, a hot water inlet, a cold water outlet and a hot water outlet. The water inlet of the cold and warm box 1 is connected to a first stop valve 37, and the water outlet is connected to the first three-way valve 61. The other two ends of the first three-way valve 61 are respectively connected to the cold water inlet and the hot water inlet of the vehicle thermal management water circuit 9. The third three-way valve 63 is respectively connected to the first stop valve 37, the cold water outlet and the hot water outlet of the vehicle thermal management water circuit 9. This embodiment can use the coolant of different temperatures already in the car as the cold and heat source of the refrigerator, and use semiconductor refrigeration sheets as an auxiliary to expand the application temperature range of the vehicle refrigerator.

[0114] like Figure 2As shown, in the second vehicle-mounted cooling and heating box and vehicle thermal management system of the present invention, on the basis of the first vehicle-mounted cooling and heating box and vehicle thermal management system, the vehicle thermal management water circuit 9 includes: a battery pack 2, a compressor 5, a first heat exchanger 31 for a water-cooled condenser, a second heat exchanger 32 for a cabin heating core, a third heat exchanger 33 for a cabin evaporator, a fourth heat exchanger 34 for cooling the battery pack, and a second three-way valve 62. The second three-way valve 62 is respectively connected to the battery pack 2, the second three-way node 72, and the first four-way node 78, the second three-way node 72 is also connected to the first three-way valve 61 and the third three-way node 73, and the first four-way node 78 is also respectively connected to the first three-way valve 61, the first heat exchange pipeline of the fourth heat exchanger 34, and the heat exchange pipeline of the motor assembly. The fourth three-way valve 64 is also connected to the second heat exchanger 32, an auxiliary heating element 45 and the first three-way node 71 respectively. The first three-way node 71 is also connected to the battery pack 2 and the third three-way valve 63 respectively. The third three-way node 73 is also connected to the second heat exchanger 32 and a fifth three-way node 75 respectively. The fifth three-way node 75 is also connected to the motor assembly heat exchange pipeline and the first heat exchange pipeline of the first heat exchanger 31 respectively. The fifth three-way valve 65 is connected to the motor assembly heat exchange pipeline, the auxiliary heating element 45, and the first heat exchange pipeline of the first heat exchanger 31 respectively. The exhaust end of the compressor 5 is connected to the second pipeline of the first heat exchanger 31, and the suction end is connected to the second heat exchange pipelines of the third heat exchanger 33 and the fourth heat exchanger 34 respectively. The second heat exchange pipelines of the third heat exchanger 33 and the fourth heat exchanger 34 are respectively connected to the second pipeline of the first heat exchanger 31. The heat exchange pipeline of the motor assembly includes: a radiator 41, a sixth three-way valve 74, a sixth three-way node 76, a second four-way node 79, and a vehicle charger 43. Among them, the sixth three-way valve 74 is respectively connected to the radiator 41 and the first four-way node 78. The sixth three-way node 76 is respectively connected to the fifth three-way node 75, a motor controller 42 and the sixth three-way valve 74. The second four-way node 79 is respectively connected to the radiator 41, a drive motor 44, the fifth three-way valve 65 and the seventh three-way valve 77, and the seventh three-way valve 77 is also respectively connected to the first heat exchange pipeline of the fourth heat exchanger 34 and the third three-way valve 63. The two ends of the vehicle charger 43 are respectively connected to the motor controller 42 and the drive motor 44. The third water pump 83 is connected in series between the second four-way node 79 and the radiator 41. The first water pump 81 is connected in series between the first four-way node 78 and the first heat exchange pipeline of the fourth heat exchanger 34. The second water pump 82 is connected in series between the fifth three-way node 75 and the first heat exchange pipeline of the first heat exchanger 31. A first expansion valve 35 is provided at the inlet of the third heat exchanger 33, and a second expansion valve 36 is provided at the inlet of the second heat exchange pipeline of the fourth heat exchanger 34. The cooling and heating box 1 has a built-in semiconductor refrigeration sheet to cool the water inlet of the cooling and heating box 1; or, the current direction is changed to heat the water inlet. Figure 2Multiple three-way valves are used to build the vehicle-mounted heating and cooling box and the vehicle thermal management system, but the structure is not limited to this. Actual products can use multi-way valves to reduce the number and complexity of water pipes according to space requirements and system needs, but are not limited to this.

[0115] Figure 3 FIG. 1 is a schematic diagram of the second vehicle-mounted cooling and heating box and vehicle thermal management system of the present invention working in the heating mode. Figure 2 , 3 As shown, when the vehicle-mounted cold and warm box and the vehicle thermal management system of the present invention work in the heating mode, the hot water circulation pipeline refers to Figure 3 As shown by the dotted arrow in (the cut-off end of the three-way valve is marked by "×"), when the vehicle-mounted cold and warm box works in the heating mode: the first three-way valve 61 is only connected to the water outlet of the cold and warm box 1 and the second three-way node 72, and the connection with the first four-way node 78 is cut off. The second three-way valve 62 is only connected to the battery pack 2 and the second three-way node 72, and the connection with the first four-way node 78 is cut off. The third three-way valve 63 is only connected to the first three-way node 71 and the first cut-off valve 37, and the connection with the seventh three-way valve 77 is cut off. The fourth three-way valve 64 maintains the three-way interconnection of the first three-way node 71, the second heat exchanger 32 and the auxiliary heating element 45. The fifth three-way valve 65 is only connected to the first heat exchange pipeline of the first heat exchanger 31 and the auxiliary heating element 45, and the connection with the second four-way node 79 is cut off. The sixth three-way valve 74 is only connected to the radiator 41 and the first four-way node 78, and the connection with the sixth three-way node 76 is cut off, and the second cut-off valve 38 remains cut off. Figure 4 FIG. 1 is a schematic diagram of the second vehicle-mounted heating and cooling box and vehicle thermal management system of the present invention working in cooling mode. Figure 2 , 4 As shown, when the vehicle-mounted cold and warm box and the vehicle thermal management system of the present invention work in the cooling mode, the cold water circulation pipeline refers to Figure 4As shown by the solid arrow in (the cut-off end of the three-way valve is marked by "×"), when the vehicle-mounted cold and warm box works in the cooling mode: the first three-way valve 61 only connects the water outlet of the cold and warm box 1 and the first four-way node 78, and cuts off the connection with the second three-way node 72. The second three-way valve 62 only connects the battery pack 2 and the first four-way node 78, and cuts off the connection with the second three-way node 72. The third three-way valve 63 maintains the three-way interconnection of the first three-way node 71, the first cut-off valve 37 and the seventh three-way valve 77. The fourth three-way valve 64 only connects the second heat exchanger 32 and the auxiliary heating element 45, and cuts off the connection with the first three-way node 71. The fifth three-way valve 65 is connected only to the first heat exchange pipeline of the first heat exchanger 31 and the auxiliary heating element 45, and the connection with the second four-way node 79 is cut off; the sixth three-way valve 74 is connected only to the radiator 41 and the sixth three-way node 76, and the connection with the first four-way node 78 is cut off; the second stop valve 38 is cut off, and the second stop valve 38 remains turned on; the seventh three-way valve 77 is connected only to the first heat exchange pipeline of the fourth heat exchanger 34 and the third three-way valve 63, and the connection with the second four-way node 79 is cut off.

[0116] The present invention uses coolant as a cold / hot carrier, which has the following advantages:

[0117] 1. Use coolant as a cold storage carrier. When a single refrigerator is running, the compressor does not need to run at a very low speed. Using the operating speed of the air-conditioning condition can achieve a better cooling effect and reduce the start and stop frequency of the compressor; (the same is true when heating)

[0118] 2. The heat source of the warm box can use the residual heat and waste heat of the vehicle (such as from compressor exhaust, motor electronic control cooling, engine cooling, etc.) to reduce energy consumption;

[0119] 3. Using semiconductor refrigeration chips as auxiliary cold / heat sources can overcome the problems of poor cooling effect in multi-evaporator operation and high temperature scenarios, as well as poor heating effect when the water temperature is not high.

[0120] 4. Adapt to the current technological trend of component integration and the development requirements of natural refrigerant substitution.

[0121] In summary, the vehicle-mounted refrigerator and heater and vehicle thermal management system of the present invention can utilize the coolant of different temperatures in the vehicle as the cold and heat source of the refrigerator, and use semiconductor refrigeration / heating sheets as an auxiliary to expand the application temperature range of the vehicle-mounted refrigerator.

[0122] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A vehicle-mounted cooling and heating box and a vehicle thermal management system, characterized in that: include: A vehicle thermal management water circuit (9), comprising a cold water inlet, a hot water inlet, a cold water outlet, and a hot water outlet; A cooling and heating box (1), wherein the water inlet of the cooling and heating box (1) is connected to a first stop valve (37), the water outlet is connected to a first three-way valve (61), and the other two ends of the first three-way valve (61) are respectively connected to the cold water inlet and the hot water inlet of the vehicle thermal management water circuit (9); as well as A third three-way valve (63) is respectively connected to the first stop valve (37), the cold water outlet and the hot water outlet of the vehicle thermal management water circuit (9).

2. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 1, characterized in that: The vehicle thermal management water circuit (9) comprises: a battery pack (2); a compressor (5); a first heat exchanger (31) for a water-cooled condenser; a second heat exchanger (32) for the cabin heating core; a third heat exchanger (33) for the in-cabin evaporator; a fourth heat exchanger (34) for cooling the battery pack; A second three-way valve (62) is respectively connected to the battery pack (2), the second three-way node (72) and the first four-way node (78); the second three-way node (72) is also connected to the first three-way valve (61) and the third three-way node (73); the first four-way node (78) is also respectively connected to the first three-way valve (61), the first heat exchange pipeline of the fourth heat exchanger (34) and the heat exchange pipeline of the motor assembly.

3. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 2, characterized in that: Also includes: a fourth three-way valve (64), further connected to the second heat exchanger (32), an auxiliary heating element (45) and a first three-way node (71), the first three-way node (71) further connected to the battery pack (2) and a third three-way valve (63), the third three-way node (73) further connected to the second heat exchanger (32) and a fifth three-way node (75), the fifth three-way node (75) further connected to the heat exchange pipeline of the motor assembly and the first heat exchange pipeline of the first heat exchanger (31); and A fifth three-way valve (65) is respectively connected to the heat exchange pipeline of the motor assembly, the auxiliary heating element (45), and the first heat exchange pipeline of the first heat exchanger (31); the exhaust end of the compressor (5) is connected to the second pipeline of the first heat exchanger (31); the intake end is respectively connected to the second heat exchange pipelines of the third heat exchanger (33) and the fourth heat exchanger (34); the second heat exchange pipelines of the third heat exchanger (33) and the fourth heat exchanger (34) are respectively connected to the second pipeline of the first heat exchanger (31).

4. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 3, characterized in that: The motor assembly heat exchange pipeline comprises: a radiator (41); a sixth three-way valve (74), the sixth three-way valve (74) being connected to the radiator (41) and the first four-way node (78) respectively; a sixth three-way node (76) connected to the fifth three-way node (75), a motor controller (42) and the sixth three-way valve (74), respectively; a second stop valve (38) is connected in series between the sixth three-way node (76) and the fifth three-way node (75); a second four-way node (79) connected to the radiator (41), a drive motor (44), a fifth three-way valve (65) and a seventh three-way valve (77), respectively; the seventh three-way valve (77) is also connected to the first heat exchange pipeline of the fourth heat exchanger (34) and the third three-way valve (63); An on-board charger (43) has two ends respectively connected to the motor controller (42) and the drive motor (44).

5. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 4, characterized in that: When the vehicle-mounted cooling and heating box works in heating mode: The first three-way valve (61) only connects the water outlet of the cooling and heating box (1) and the second three-way node (72), and cuts off the connection with the first four-way node (78); The second three-way valve (62) only connects the battery pack (2) and the second three-way node (72), and cuts off the connection with the first four-way node (78); The third three-way valve (63) is connected only to the first three-way node (71) and the first stop valve (37), and is disconnected from the seventh three-way valve (77); The fourth three-way valve (64) maintains three-way communication among the first three-way node (71), the second heat exchanger (32) and the auxiliary heating element (45); The fifth three-way valve (65) connects only the first heat exchange pipeline of the first heat exchanger (31) and the auxiliary heating element (45), and cuts off the connection with the second four-way node (79); The sixth three-way valve (74) is connected only to the radiator (41) and the first four-way node (78), and is disconnected from the sixth three-way node (76), and the second stop valve (38) remains closed.

6. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 4, characterized in that: When the vehicle-mounted refrigerator and heater operates in cooling mode: The first three-way valve (61) only connects the water outlet of the cooling and heating box (1) and the first four-way node (78), and cuts off the connection with the second three-way node (72); The second three-way valve (62) only connects the battery pack (2) and the first four-way node (78), and cuts off the connection with the second three-way node (72); The third three-way valve (63) maintains three-way communication among the first three-way node (71), the first stop valve (37) and the seventh three-way valve (77); The fourth three-way valve (64) connects only the second heat exchanger (32) and the auxiliary heating element (45), and cuts off the connection with the first three-way node (71); The fifth three-way valve (65) connects only the first heat exchange pipeline of the first heat exchanger (31) and the auxiliary heating element (45), and cuts off the connection with the second four-way node (79); The sixth three-way valve (74) is connected only to the radiator (41) and the sixth three-way node (76), and is disconnected from the first four-way node (78); the second stop valve (38) is closed, and the second stop valve (38) remains open; The seventh three-way valve (77) is connected only to the first heat exchange pipeline of the fourth heat exchanger (34) and the third three-way valve (63), and is disconnected from the second four-way node (79).

7. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 4, characterized in that: It also includes a third water pump (83) connected in series between the second four-way node (79) and the radiator (41).

8. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 4, characterized in that: It also includes a first water pump (81) connected in series between the first four-way node (78) and the first heat exchange pipeline of the fourth heat exchanger (34); A second water pump (82) is connected in series between the fifth three-way node (75) and the first heat exchange pipeline of the first heat exchanger (31).

9. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 4, characterized in that: A first expansion valve (35) is provided at the inlet of the third heat exchanger (33), and a second expansion valve (36) is provided at the inlet of the second heat exchange pipeline of the fourth heat exchanger (34).

10. The vehicle-mounted cooling and heating box and vehicle thermal management system according to claim 1, characterized in that: The cooling and heating box (1) is internally provided with a semiconductor refrigeration plate for cooling or heating the water inlet of the cooling and heating box (1).

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