Cooling and heating box heat exchange unit, heat management system, vehicle-mounted cooling and heating box and vehicle

Abstract

The invention discloses a cold and warm box heat exchange unit, a heat management system, a vehicle-mounted cold and warm box and a vehicle. A first heat exchange module is suitable for exchanging heat with the cold and warm box; and the second heat exchange module is suitable for exchanging heat with a vehicle-mounted waste heat system, and the second heat exchange module is connected with the first heat exchange module to form a heat exchange loop. The first heat exchange module and the second heat exchange module are arranged, the first heat exchange module can exchange heat with the cold and warm box, the second heat exchange module can exchange heat with the vehicle-mounted waste heat system, the second heat exchange module and the first heat exchange module are connected to form a heat exchange loop, and the first heat exchange module can absorb heat in the vehicle-mounted waste heat system through the second heat exchange module; the first heat exchange module exchanges heat with the cold and warm box, so that the heating or refrigerating function of the cold and warm box is achieved, heat in the vehicle-mounted waste heat system can be used for providing energy for the first heat exchange module, and therefore the utilization rate of the heat of the vehicle-mounted waste heat system is increased.

Description

Technical Field

[0001] The present application belongs to the field of heat exchange technology, and specifically relates to a heat exchange unit for a cold and warm box, a thermal management system, a vehicle-mounted cold and warm box, and a vehicle. Background Art

[0002] As people have higher and higher requirements for car riding comfort and functional diversity, most modern cars are equipped with air-conditioning systems. Some cars are also equipped with independent refrigerators or incubators, which can heat or cool items in winter or summer for people's convenience.

[0003] In the related art, a refrigerator in a car usually needs to rely on a built-in compressor for cooling or heating, but with this refrigerator structure, the energy consumption of the refrigerator is relatively high. Summary of the invention

[0004] The present application aims to provide a heat exchange unit for a cold and warm box, a thermal management system, a vehicle-mounted cold and warm box and a vehicle, which can solve the problem of high energy consumption of the vehicle-mounted cold and warm box during operation in the related art.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In the first aspect, an embodiment of the present application proposes a heat exchange unit for a cold and warm box, comprising a first heat exchange module, which is suitable for exchanging heat with the cold and warm box; a second heat exchange module, which is suitable for exchanging heat with an on-board waste heat system, and the second heat exchange module is connected to the first heat exchange module to form a heat exchange loop.

[0007] Optionally, the first heat exchange module exchanges heat with the cold and warm box through a first heat exchange medium, the second heat exchange module exchanges heat with the vehicle waste heat system through a second heat exchange medium, and the first heat exchange medium and the second heat exchange medium exchange heat in the second heat exchange module.

[0008] Optionally, the first heat exchange module includes a heat exchange component and a drive component, and the heat exchange component is suitable for exchanging heat with the heating and cooling box through the first heat exchange medium; the second heat exchange module is connected to the heat exchange component through the drive component to form the heat exchange circuit, and the drive component is used to drive the first heat exchange medium to circulate in the heat exchange circuit.

[0009] Optionally, the driving component includes a driving pump, an input end of the driving pump is connected to the heat exchange component, and an output end of the driving pump is connected to the second heat exchange module, for driving the first heat exchange medium to circulate between the heat exchange component and the second heat exchange module.

[0010] Optionally, the driving component further includes a generator, an input end of the generator is connected to the second heat exchange module, and an output end of the generator is connected to an input end of the heat exchange component.

[0011] Optionally, the driving component further includes an absorber, the input end of the absorber is connected to the output end of the heat exchange component, the output end of the absorber is connected to the input end of the driving pump, and the absorber is used to supplement the first heat exchange medium to the heat exchange circuit.

[0012] Optionally, the first heat exchange module further includes a pressure reducing valve, one end of the pressure reducing valve is connected to the absorber, and the other end of the pressure reducing valve is connected to the generator.

[0013] Optionally, the generator is suitable for being connected to a refrigerant heat exchange unit for exchanging heat with the refrigerant heat exchange unit.

[0014] Optionally, the first heat exchange module further includes a heating element, which is disposed in the generator and is used to heat the first heat exchange medium flowing through the generator.

[0015] Optionally, the heat exchange component includes a condenser, the input end of the condenser is connected to the output end of the driving component, and the output end of the condenser is connected to the input end of the driving component.

[0016] Optionally, the heat exchange component further includes a first evaporator, an input end of the first evaporator is connected to an output end of the condenser, and an output end of the first evaporator is connected to an input end of the driving component.

[0017] Optionally, the heat exchange component further includes a first expansion valve, wherein the first expansion valve is disposed between the first evaporator and the condenser, and the first evaporator is connected to the condenser through the first expansion valve.

[0018] Optionally, the first heat exchange medium includes an aqueous ammonia solution or an aqueous lithium bromide solution.

[0019] Optionally, the second heat exchange module includes a plate heat exchanger, the plate heat exchanger is connected to the first heat exchange module to form the heat exchange loop, and the plate heat exchanger is suitable for exchanging heat with a vehicle-mounted waste heat system.

[0020] In a second aspect, an embodiment of the present application proposes a thermal management system, including a vehicle-mounted waste heat system and a cold and warm box heat exchange unit as described in any of the above items, and the second heat exchange module is suitable for exchanging heat with the vehicle-mounted waste heat system.

[0021] Optionally, the vehicle-mounted waste heat system includes a coolant heat exchange unit, the coolant heat exchange unit is connected to the second heat exchange module, and the second heat exchange medium in the coolant heat exchange unit flows through the second heat exchange module.

[0022] Optionally, the coolant heat exchange unit includes a high-pressure system heat dissipation module, and the high-pressure system heat dissipation module is connected to the second heat exchange module.

[0023] Optionally, the coolant heat exchange unit also includes a heat exchanger, one end of the heat exchanger is connected to the high-pressure system heat dissipation module, and the other end is connected to the second heat exchange module, and the heat exchanger is suitable for exchanging heat with a heat exchange unit other than the coolant heat exchange unit in the vehicle-mounted waste heat system.

[0024] Optionally, the vehicle-mounted waste heat system further includes a refrigerant heat exchange unit, wherein the refrigerant heat exchange unit is connected to the heat exchanger, and the refrigerant heat exchange unit exchanges heat with the coolant heat exchange unit through the heat exchanger.

[0025] Optionally, the refrigerant heat exchange unit includes a compressor, and the first heat exchange module is connected to an output end of the compressor for heat exchange.

[0026] Optionally, the refrigerant heat exchange unit further includes an off-vehicle heat exchanger, the off-vehicle heat exchanger is connected to the compressor, and the first heat exchange module is connected between the off-vehicle heat exchanger and the compressor.

[0027] Optionally, the refrigerant heat exchange unit further includes an in-vehicle heat exchange module, which is connected to the compressor; and / or the refrigerant heat exchange unit further includes a battery heat exchange module, which is connected to the compressor.

[0028] Optionally, the refrigerant heat exchange unit is a carbon dioxide heat exchange system.

[0029] In the third aspect, an embodiment of the present application proposes a heat exchange method for a cold and warm box heat exchange unit, which is applied to the cold and warm box heat exchange unit described in any of the above items, including exchanging heat with the cold and warm box through a first heat exchange module; exchanging heat with a vehicle-mounted waste heat system through a second heat exchange module, and the second heat exchange module is connected to the first heat exchange module to form a heat exchange loop.

[0030] Optionally, when the ambient temperature of the cooling and heating box is lower than a first preset temperature, the second heat exchange module exchanges heat with the vehicle-mounted waste heat system.

[0031] Optionally, the first heat exchange module further includes a heating element, which is disposed in the first heat exchange module; when the ambient temperature is lower than the first preset temperature, the heating element heats the first heat exchange medium.

[0032] Optionally, when the ambient temperature of the heating and cooling box is higher than a second preset temperature, the second heat exchange module exchanges heat with the vehicle-mounted waste heat system, and the generator exchanges heat with the refrigerant heat exchange unit, and the second preset temperature is greater than or equal to the first preset temperature.

[0033] Optionally, when the cold and warm box heat exchange unit is heating, the pressure reducing valve is closed; when the cold and warm box heat exchange unit is cooling, the pressure reducing valve is opened.

[0034] In a fourth aspect, an embodiment of the present application proposes a vehicle-mounted heating and cooling box, comprising a heating and cooling box heat exchange unit as described in any one of the above items.

[0035] Optionally, the vehicle-mounted heating and cooling box further includes a heating and cooling box body, the heating and cooling box body is provided with a storage cavity for storing objects, and the heating and cooling box heat exchange unit is provided in the heating and cooling box body for exchanging heat in the storage cavity.

[0036] Optionally, the vehicle-mounted cold and warm box further includes a cold storage layer, and the cold and warm box body is at least partially provided with the cold storage layer.

[0037] Optionally, the cold storage layer is a phase change material.

[0038] Optionally, the vehicle-mounted cold and warm box further includes a detection component, which is at least partially disposed in the cold and warm box body and is used to detect the temperature of the cold storage layer.

[0039] Optionally, the vehicle-mounted cooling and heating box further includes a controller, which is electrically connected to the detection component and the first heat exchange module, respectively, and is used to control the operation of the first heat exchange module.

[0040] In a fifth aspect, an embodiment of the present application proposes a vehicle, comprising a heat exchange unit for a cold or warm box as described in any one of the above items; or comprising a thermal management system as described in any one of the above items; or comprising an on-board cold or warm box as described in any one of the above items.

[0041] In an embodiment of the present application, by setting a first heat exchange module and a second heat exchange module, the first heat exchange module can exchange heat with the heating and cooling box, and the second heat exchange module can exchange heat with the vehicle-mounted waste heat system. The second heat exchange module is connected to the first heat exchange module to form a heat exchange loop. The vehicle-mounted waste heat system can exchange heat with the first heat exchange module through the second heat exchange module, and then the first heat exchange module can exchange heat with the heating and cooling box. In this way, the heat in the vehicle-mounted waste heat system can be used to provide energy for the first heat exchange module, thereby realizing the heating or cooling function of the heating and cooling box, thereby improving the utilization rate of the heat of the vehicle-mounted waste heat system.

[0042] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0044] Figure 1 is a schematic diagram of a thermal management system according to an embodiment of the present application;

[0045] Figure 2 is a schematic diagram of a vehicle-mounted cooling and heating box according to an embodiment of the present application;

[0046] Figure 3 It is a flow chart of the heat exchange method of the cold and warm box heat exchange unit in the embodiment of the present application.

[0047] Reference numerals:

[0048] 100: refrigerant heat exchange unit; 100a: in-vehicle heat exchange module; 100b: battery heat exchange module; 111: compressor; 112: outside heat exchanger; 113: gas-liquid separator; 114: second evaporator; 115: one-way valve; 116: second expansion valve; 117: third expansion valve; 118: battery pack cold plate; 119: in-vehicle heat exchanger; 200: heating and cooling box heat exchange unit; 210a: first heat exchange module; 210: heat exchange assembly; 211: condenser; 212 : first expansion valve; 213: first evaporator; 220: drive assembly; 221: absorber; 222: generator; 223: drive pump; 230: pressure reducing valve; 240: heating element; 250: second heat exchange module; 300: coolant heat exchange unit; 311: radiator; 313: high pressure system heat dissipation module; 314: water pump; 315: heat exchanger; 316: water reservoir; 400: sensor; 500: cold storage layer; 600: detection element; 700: controller. DETAILED DESCRIPTION

[0049] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0050] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0051] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0052] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] In the following, in conjunction with the accompanying drawings, the cold and warm box heat exchange unit, the thermal management system, the vehicle-mounted cold and warm box and the automobile provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0054] like Figure 1 As shown, according to some embodiments of the present application, a heat exchange unit 200 for a cold and warm box includes a first heat exchange module 210a, which is suitable for exchanging heat with the cold and warm box; a second heat exchange module 250, which is suitable for exchanging heat with a vehicle-mounted waste heat system, and the second heat exchange module 250 is connected to the first heat exchange module 210a to form a heat exchange loop.

[0055] In the embodiment of the present application, by setting a first heat exchange module 210a and a second heat exchange module 250, the first heat exchange module 210a can exchange heat with the heating and cooling box, and the second heat exchange module 250 can exchange heat with the vehicle-mounted waste heat system. The second heat exchange module 250 is connected to the first heat exchange module 210a to form a heat exchange loop. Furthermore, the first heat exchange module 210a can absorb heat from the vehicle-mounted waste heat system through the second heat exchange module 250, and then the first heat exchange module 210a exchanges heat with the heating and cooling box to realize the heating or cooling function of the heating and cooling box. In this way, the heat in the vehicle-mounted waste heat system can be used to provide energy for the first heat exchange module 210a, thereby improving the utilization rate of the heat of the vehicle-mounted waste heat system and reducing energy consumption.

[0056] Optionally, the first heat exchange module 210a exchanges heat with the cold and warm box through the first heat exchange medium, the second heat exchange module 250 exchanges heat with the vehicle waste heat system through the second heat exchange medium, and the first heat exchange medium and the second heat exchange medium exchange heat in the second heat exchange module 250.

[0057] In the embodiment of the present application, a circulatory first heat exchange medium is arranged in the first heat exchange module 210a so as to utilize the first heat exchange medium to exchange heat with the cold and warm box. Accordingly, the second heat exchange module 250 exchanges heat with the vehicle-mounted waste heat system through the circulating second heat exchange medium. At the same time, the first heat exchange medium also flows through the second heat exchange module 250 to exchange heat with the second heat exchange medium in the second heat exchange module 250. In this way, the heat in the vehicle-mounted waste heat system can be fully utilized.

[0058] It should be noted that the first heat exchange medium and the second heat exchange medium may be the same or different, and may be flexibly selected according to actual conditions, and this embodiment does not impose any limitation thereto.

[0059] Optionally, the first heat exchange module 210a includes a heat exchange component 210 and a drive component 220, and the heat exchange component 210 is suitable for exchanging heat with the heating and cooling box through a first heat exchange medium; the second heat exchange module 250 is connected to the heat exchange component 210 through the drive component 220 to form a heat exchange circuit, and the drive component 220 is used to drive the first heat exchange medium to circulate in the heat exchange circuit.

[0060] In an embodiment of the present application, the heat exchange component 210 is connected to the drive component 220, and the drive component 220 can drive the first heat exchange medium to circulate in the heat exchange circuit, so that the first heat exchange medium can exchange heat with the heating box when flowing through the heat exchange component 210, thereby realizing the heating or cooling function of the heating box.

[0061] The driving component 220 may be a device that can provide driving force, such as a pressurizing device and a driving pump 223 , and may be flexibly selected according to actual needs, and is not limited here.

[0062] In some embodiments, the driving assembly 220 includes a driving pump 223, the input end of the driving pump 223 is connected to the heat exchange assembly 210, and the output end of the driving pump 223 is connected to the second heat exchange module 250, for driving the first heat exchange medium to circulate between the heat exchange assembly 210 and the second heat exchange module 250. By providing the driving pump 223, the first heat exchange medium can be driven to flow and circulate between the heat exchange assembly 210 and the second heat exchange module 250.

[0063] It should be noted that the driving pump 223 may include a solution pump, etc. The driving pump 223 is used to provide driving force for the circulation of the first heat exchange medium in the heat exchange circuit. The specific type of the driving pump 223 can be determined according to the type of the first heat exchange medium and is not limited here.

[0064] In some embodiments, the driving assembly 220 further includes a generator 222, the input end of the generator 222 is connected to the second heat exchange module 250, and the output end of the generator 222 is connected to the input end of the heat exchange assembly 210. In the present application, the generator 222 is arranged in the heat exchange loop so that when the first heat exchange medium flows through the generator 222, heat exchange is performed in the generator 222, thereby providing the heat exchange assembly 210 with the first heat exchange medium after heat exchange.

[0065] Specifically, the cold and warm box heat exchange unit 200 has a heating mode and a cooling mode. In the heating mode, when the first heat exchange medium flows through the generator 222, the generator 222 heats the first heat exchange medium. At this time, the first heat exchange medium does not undergo a phase change. The heated first heat exchange medium flows into the heat exchange component 210 for heat exchange, thereby realizing the heating function. In the cooling mode, when the first heat exchange medium flows through the generator 222, the generator 222 heats the first heat exchange medium, causing the first heat exchange medium to at least partially vaporize. The vaporized heat exchange medium flows into the heat exchange component 210 for heat exchange, thereby realizing the cooling function.

[0066] Optionally, the driving component 220 further includes an absorber 221, the input end of the absorber 221 is connected to the output end of the heat exchange component 210, the output end of the absorber 221 is connected to the input end of the driving pump 223, and the absorber 221 is used to supplement the first heat exchange medium to the heat exchange circuit.

[0067] In an embodiment of the present application, the first heat exchange medium output from the output end of the heat exchange component 210 enters the absorber 221, and the first heat exchange medium is replenished through the absorber 221 to compensate for the concentration change of the first heat exchange medium during the heat exchange process, thereby ensuring the normal progress of the heat exchange process in the heat exchange component 210.

[0068] It is understandable that, in the refrigeration mode, the first heat exchange medium is at least partially vaporized after flowing through the generator 222, and the concentration of the vaporized first heat exchange medium will change. In order to ensure the normal circulation of the first heat exchange medium, the first heat exchange medium is supplemented by setting the absorber 221.

[0069] Optionally, the first heat exchange module 210a further includes a pressure reducing valve 230 , one end of the pressure reducing valve 230 is connected to the absorber 221 , and the other end of the pressure reducing valve 230 is connected to the generator 222 .

[0070] In the embodiment of the present application, the absorber 221 and the generator 222 are connected via a pressure reducing valve 230 so that the unvaporized first heat exchange medium in the generator 222 can be introduced into the absorber 221, and then mixed with the first heat exchange medium flowing back from the output end of the absorber 221 and the heat exchange component 210 to form the first heat exchange medium again, thereby realizing the circulation of the first heat exchange medium.

[0071] In addition, by setting the pressure reducing valve 230, the flow rate of the first heat exchange medium flowing from the generator 222 to the absorber 221 can be controlled, thereby controlling the liquid level of the first heat exchange medium in the generator 222 and the concentration of the first heat exchange medium in the absorber 221, so that the heat exchange process in the heat exchange component 210 can proceed smoothly, and the temperature range of the cold and warm box during the refrigeration process can be controlled, thereby improving the safety of the cold and warm box during operation.

[0072] In some embodiments, the generator 222 may also be connected to an external storage device, and the first heat exchange medium flowing out of the generator 222 flows into the external storage device, and the absorber 221 is connected to the external storage device. In this way, the ungasified first heat exchange medium in the generator 222 can be collected in the external storage device, and then the first heat exchange medium is replenished in the absorber 221 by the external storage device, so as to be mixed with the first heat exchange medium flowing out of the heat exchange assembly 210 in the absorber 221, thereby realizing the replenishment of the first heat exchange medium and ensuring the normal circulation of the first heat exchange medium in the heat exchange circuit.

[0073] Optionally, the generator 222 is suitable for connecting to the refrigerant heat exchange unit 100, and is used for exchanging heat with the refrigerant heat exchange unit 100. In the embodiment of the present application, by connecting the generator 222 to the refrigerant heat exchange unit 100, the heat output by the refrigerant heat exchange unit 100 can be exchanged with the first heat exchange medium through the generator 222, thereby utilizing the heat generated by the refrigerant heat exchange unit 100 to provide energy for heat exchange of the first heat exchange medium.

[0074] Optionally, the first heat exchange module 210a further includes a heating element 240 , which is disposed in the generator 222 and is used to heat the first heat exchange medium flowing through the generator 222 .

[0075] In the embodiment of the present application, a heating element 240 is provided in the generator 222 so that when the heat provided by the refrigerant heat exchange unit 100 is insufficient or unable to provide heat, the heating element 240 is used to heat the first heat exchange medium flowing through the generator 222 .

[0076] In addition, while the generator 222 is exchanging heat with the refrigerant heat exchange unit 100, the first heat exchange medium flowing through the generator 222 can also be auxiliary heated by starting the heating element 240. Under the combined action of the heat provided by the heating element 240 and the refrigerant heat exchange unit 100, the first heat exchange medium is heated to meet different usage requirements.

[0077] Specifically, the heating element 240 can be a PTC (Positive Temperature Coefficient) heater. The PTC heater is composed of a PTC ceramic heating element and an aluminum tube, and has the advantages of low thermal resistance and high heat exchange efficiency, and can improve the heating efficiency of the heat exchange medium. It is understandable that the PTC heater can select a PTC heater with a power of 1kw, or it can be selected according to actual conditions, and this embodiment does not limit it.

[0078] Optionally, the heat exchange component 210 includes a condenser 211, the input end of the condenser 211 is connected to the output end of the drive component 220, and the output end of the condenser 211 is connected to the input end of the drive component 220. By providing the condenser 211, the high-temperature and high-pressure first heat exchange medium output from the generator 222 is cooled into a medium-temperature and high-pressure first heat exchange medium, thereby realizing the heating function.

[0079] Optionally, the heat exchange component 210 further includes a first evaporator 213, the input end of the first evaporator 213 is connected to the output end of the condenser 211, and the output end of the first evaporator 213 is connected to the input end of the driving component 220. In the first evaporator 213, the input low-temperature and low-pressure first heat exchange medium can absorb heat in the environment and vaporize to form a low-pressure first heat exchange medium, thereby realizing the refrigeration function of the cold and warm box.

[0080] Optionally, the heat exchange assembly 210 further includes a first expansion valve 212, which is disposed between the first evaporator 213 and the condenser 211, and the first evaporator 213 is connected to the condenser 211 through the first expansion valve 212. The first expansion valve 212 can change the medium-temperature and high-pressure first heat exchange medium into a low-temperature and low-pressure first heat exchange medium through throttling.

[0081] In a specific application, the absorber 221 contains a first heat exchange medium, which is input from the absorber 221 to the generator 222 by driving the pump 223. The heat generated by the refrigerant heat exchange unit 100 is input into the generator 222, and the first heat exchange medium in the generator 222 can be heated. As the temperature of the first heat exchange medium continues to rise, the temperature of a portion of the first heat exchange medium reaches its boiling point to form a gaseous first heat exchange medium. The high-temperature and high-pressure gaseous first heat exchange medium is transmitted to the condenser 211 and cooled to a medium-temperature and high-pressure first heat exchange medium. The medium-temperature and high-pressure first heat exchange medium passes through the first expansion valve 212 and becomes a low-temperature and low-pressure first heat exchange medium. The low-temperature and low-pressure first heat exchange medium input by the first expansion valve 212 enters the first evaporator 213. In the first evaporator 213, the low-temperature and low-pressure first heat exchange medium can absorb heat in the environment and vaporize to form a low-pressure first heat exchange medium, thereby realizing the refrigeration function of the cold and warm box.

[0082] When the cold and warm box heat exchange unit 200 is in the heating mode, the first expansion valve 212 is fully opened, the first heat exchange medium is heated to a preset temperature in the generator 222, the first heat exchange medium flows through the heat exchange component 210, and releases heat to the cold and warm box in the heat exchange component 210, and finally the first heat exchange medium flows to the absorber 221, thereby realizing the heating function of the cold and warm box.

[0083] Optionally, the first heat exchange medium includes an aqueous ammonia solution or an aqueous lithium bromide solution.

[0084] It can be understood that in the present application, two substances with different boiling points are selected to form a mixed solution as the first heat exchange medium, so that the low-boiling-point substance can be used as the refrigerant and the high-boiling-point substance can be used as the absorbent, thereby realizing the circulation of the heat exchange medium in the cold and warm box heat exchange unit 200.

[0085] Specifically, an ammonia solution or a lithium bromide solution can be selected as the first heat exchange medium. The ammonia solution or the lithium bromide solution not only has a large unit refrigeration capacity and a high heat release coefficient, but also has a low cost and is easy to prepare.

[0086] Ammonia aqueous solution is a solution composed of low-boiling-point ammonia and high-boiling-point water, wherein the boiling point of ammonia at atmospheric pressure is 33°C, and the boiling point of water at atmospheric pressure is 100°C. The low-boiling-point ammonia is the refrigerant, and the high-boiling-point water is the absorbent. As the ammonia solution in the generator 222 continuously absorbs heat, its solution temperature continues to rise. When the solution temperature rises to the boiling point of ammonia, the ammonia in the ammonia solution evaporates to form high-temperature and high-pressure ammonia gas, and the solution is diluted to dilute ammonia solution. The high-temperature and high-pressure ammonia gas enters the condenser 211 from the generator 222 and condenses into medium-temperature and high-pressure ammonia liquid. The ammonia liquid becomes low-temperature and low-pressure ammonia liquid after passing through the first expansion valve 212. The ammonia liquid flows out of the first expansion valve 212 and enters the first evaporator 213 to absorb heat and is vaporized into low-pressure ammonia gas again. The low-pressure ammonia gas is output from the first evaporator 213 to the absorber 221. At the same time, the dilute ammonia solution produced in the generator 222 enters the absorber 221 through the pressure reducing valve 230. The dilute ammonia solution and the ammonia gas are mixed in the absorber 221 to form an ammonia solution again. Finally, the driving pump 223 extracts it again and sends it to the generator 222, thereby forming a refrigeration cycle process of the cold and warm box.

[0087] It should be noted that the first heat exchange medium may also be other types of medium, and the working principle thereof may refer to the above content, which will not be described in detail here.

[0088] Optionally, the second heat exchange module 250 includes a plate heat exchanger, which is connected to the first heat exchange module 210a to form a heat exchange loop, and the plate heat exchanger is suitable for exchanging heat with the vehicle-mounted waste heat system. By selecting a plate heat exchanger as the second heat exchange module 250 and using the plate heat exchanger to exchange heat with the vehicle-mounted waste heat system, the heat exchange efficiency can be improved, the heat loss can be reduced, and the plate heat exchanger has a compact structure and saves space.

[0089] like Figure 1 As shown, an embodiment of the present application further provides a thermal management system, including a vehicle-mounted waste heat system and the cold and warm box heat exchange unit 200 in the above embodiment, and the second heat exchange module 250 is suitable for exchanging heat with the vehicle-mounted waste heat system.

[0090] In an embodiment of the present application, by setting a first heat exchange module 210a and a second heat exchange module 250, the first heat exchange module 210a can exchange heat with the heating and cooling box, and the second heat exchange module 250 can exchange heat with the vehicle-mounted waste heat system. The second heat exchange module 250 is connected to the first heat exchange module 210a to form a heat exchange loop. The vehicle-mounted waste heat system can exchange heat with the first heat exchange module 210a through the second heat exchange module 250, and then the first heat exchange module 210a exchanges heat with the heating and cooling box. In this way, the heat in the vehicle-mounted waste heat system can be used to provide energy for the first heat exchange module 210a, thereby realizing the heating or cooling function of the heating and cooling box, thereby improving the utilization rate of the heat of the vehicle-mounted waste heat system.

[0091] Optionally, the vehicle-mounted waste heat system includes a coolant heat exchange unit 300 , which is connected to the second heat exchange module 250 , and the second heat exchange medium in the coolant heat exchange unit 300 flows through the second heat exchange module 250 .

[0092] In an embodiment of the present application, the coolant heat exchange unit 300 is connected to the second heat exchange module 250 so that the second heat exchange module 250 can absorb the heat generated in the coolant heat exchange unit 300 to provide energy for the heat exchange circuit in the cold and warm box heat exchange unit 200.

[0093] Optionally, the coolant heat exchange unit 300 includes a high-pressure system heat dissipation module 313, and the high-pressure system heat dissipation module 313 is connected to the second heat exchange module 250. It is understandable that the high-pressure system heat dissipation module 313 can generate heat when working. If it is directly dissipated to the external environment, it will cause energy waste. In this application, the second heat exchange module 250 is connected to the high-pressure system heat dissipation module 313 to use the heat generated by the high-pressure system heat dissipation module 313 to provide energy for the cold and warm box heat exchange unit 200.

[0094] Furthermore, the second heat exchange module 250 can exchange heat with the high-pressure system heat dissipation module 313 through the second heat exchange medium.

[0095] In specific applications, the high-voltage system heat dissipation module 313 includes, but is not limited to: a power battery system, a high-voltage power distribution system, a motor and its controller system, and an electric compressor assembly.

[0096] Optionally, the coolant heat exchange unit 300 further includes a heat exchanger 315, one end of the heat exchanger 315 is connected to the high-pressure system heat dissipation module 313, and the other end is connected to the second heat exchange module 250, and the heat exchanger 315 is suitable for exchanging heat with heat exchange units other than the coolant heat exchange unit 300 in the vehicle waste heat system. In the present application, by arranging the heat exchanger 315 in the coolant heat exchange unit 300, the coolant heat exchange unit 300 can exchange heat with heat exchange units other than the coolant heat exchange unit 300 in the vehicle waste heat system through the heat exchanger 315, thereby realizing multi-layer heat exchange and improving energy utilization.

[0097] In other embodiments, the coolant heat exchange unit 300 also includes a water reservoir 316, a water pump 314 and a radiator 311, the heat exchanger 315 is connected to the refrigerant heat exchange unit 100, the high-pressure system heat dissipation module 313 is connected to the heat exchanger 315, the second heat exchange module 250 is connected to the radiator 311, the water reservoir 316 is respectively connected to the high-pressure system heat dissipation module and the radiator 311, the heat exchanger 315 and the water pump 314 are connected between the high-pressure system heat dissipation module 313 and the second heat exchange module 250, the water reservoir 316 is used to provide coolant, i.e., the second heat exchange medium, to the coolant heat exchange unit 300, and the high-pressure system heat dissipation module 313 exchanges heat with heat exchange units other than the coolant heat exchange unit 300 in the vehicle-mounted waste heat system through the heat exchanger 315.

[0098] Specifically, the water pump 314 pumps the second heat exchange medium in the water reservoir 316 into the high-pressure system heat dissipation module 313, and the second heat exchange medium absorbs the heat in the high-pressure system heat dissipation module 313 and flows into the radiator 311, thereby realizing the heat dissipation of the high-pressure system. In addition, the coolant after absorbing the heat in the high-pressure system heat dissipation module 313 passes through the heat exchanger 315 to exchange heat with the heat exchange medium of the refrigerant heat exchange unit, and then the second heat exchange medium flows from the heat exchanger 315 into the second heat exchange module 250, and exchanges heat with the first heat exchange medium in the cold and warm box heat exchange unit 200, and finally the second heat exchange medium enters the radiator 311, and realizes the cooling of the second heat exchange medium by exchanging heat with the cold air outside the vehicle.

[0099] Optionally, the vehicle waste heat system further includes a refrigerant heat exchange unit 100, which is connected to a heat exchanger 315, and the refrigerant heat exchange unit 100 exchanges heat with a coolant heat exchange unit 300 through the heat exchanger 315. In the present application, the coolant heat exchange unit 300 is connected to the refrigerant heat exchange unit 100 through the heat exchanger 315, and the heat exchange between the refrigerant heat exchange unit 100 and the coolant heat exchange unit 300 can be achieved by using the heat exchanger 315.

[0100] Optionally, the refrigerant heat exchange unit 100 includes a compressor 111, and the first heat exchange module 210a is connected to the output end of the compressor 111 for heat exchange. It is understandable that by connecting the first heat exchange module 210a to the output end of the compressor 111 for heat exchange, the first heat exchange module 210a can absorb the heat generated when the compressor 111 is working, thereby providing heat for the cold and warm box heat exchange unit 200.

[0101] Optionally, the refrigerant heat exchange unit 100 further includes an external heat exchanger 112 , the external heat exchanger 112 is connected to the compressor 111 , and the first heat exchange module 210 a is connected between the external heat exchanger 112 and the compressor 111 .

[0102] It is understandable that when the refrigerant heat exchange unit 100 is cooling, the vehicle-external heat exchanger 112 is connected to the compressor 111, so that the vehicle-external heat exchanger 112 dissipates excess heat to the external environment, which will cause energy waste. In this application, the first heat exchange module 210a is connected between the vehicle-external heat exchanger 112 and the compressor 111, so as to utilize the heat wasted by the vehicle-external heat exchanger 112, thereby improving the utilization rate of heat and reducing energy consumption.

[0103] In some embodiments, the refrigerant heat exchange unit 100 further includes an in-vehicle heat exchange module 100a, which is connected to the compressor 111. By connecting the in-vehicle heat exchange module 100a to the compressor 111, the in-vehicle heat exchange module 100a can be used to cool or heat the in-vehicle environment.

[0104] In other embodiments, the refrigerant heat exchange unit 100 further includes a battery heat exchange module 100b, which is connected to the compressor 111. By connecting the battery heat exchange module 100b to the compressor 111, the battery heat exchange module 100b is used to heat or cool the vehicle battery.

[0105] Specifically, the in-vehicle heat exchange module 100a includes a gas-liquid separator 113, a second evaporator 114, a second expansion valve 116 and an in-vehicle heat exchanger 119, the in-vehicle heat exchanger 119 is connected to the compressor 111, the second evaporator 114 is connected to the in-vehicle heat exchanger 119 through the second expansion valve 116, the second evaporator 114 is connected to the gas-liquid separator 113, the gas-liquid separator 113 is connected to the compressor 111, and the out-vehicle heat exchanger 112 is connected to the gas-liquid separator 113 through a one-way valve 115. The cooling or heating of the vehicle can be achieved through the second evaporator 114 and the in-vehicle heat exchanger 119. Among them, the in-vehicle heat exchanger 119 includes a first in-vehicle heat exchanger and a second in-vehicle heat exchanger, and the heating temperatures that can be achieved by the first in-vehicle heat exchanger and the second in-vehicle heat exchanger are different.

[0106] In addition, a sensor 400 is also provided in the refrigerant heat exchange unit 100, and the pressure or temperature of the pipeline is detected by the sensor 400. The setting position and number of the sensor 400 can be flexibly set according to actual needs and are not limited in the embodiments of the present application.

[0107] In another embodiment, the battery heat exchange module 100b includes a battery pack cold plate 118 and a third expansion valve 117, one end of the battery pack cold plate 118 is connected to the compressor 111, and the other end of the battery pack cold plate 118 is connected to the gas-liquid separator 113 through the third expansion valve 117, so that the heat generated by the compressor 111 can be further utilized to cool or heat the battery, thereby improving the utilization rate of the heat generated by the compressor 111. It should be noted that the specific structure of the refrigerant heat exchange unit 100 can be flexibly set according to actual needs and is not limited here.

[0108] Optionally, the refrigerant heat exchange unit 100 is a carbon dioxide heat exchange system.

[0109] In the embodiment of the present application, the refrigerant heat exchange unit 100 is set as a carbon dioxide heat exchange system. The heat exchange medium in the carbon dioxide heat exchange system is carbon dioxide. Carbon dioxide as the second heat exchange medium not only has good heating performance and can provide sufficient energy for the cold and warm box heat exchange unit 200, but also has low energy consumption and low cost. At the same time, it can also reduce the pollution problem of the compound to the environment.

[0110] Alternatively, if Figure 3 As shown, the embodiment of the present application also provides a heat exchange method of a cold and warm box heat exchange unit 200, which is applied to the cold and warm box heat exchange unit 200 in the above embodiment, including:

[0111] Step S101, exchanging heat with a cooling and heating box through the first heat exchange module 210a.

[0112] Step S102: exchanging heat with the vehicle waste heat system through the second heat exchange module 250, and the second heat exchange module 250 is connected to the first heat exchange module 210a to form a heat exchange loop.

[0113] In the embodiment of the present application, by setting a first heat exchange module 210a and a second heat exchange module 250, the first heat exchange module 210a can exchange heat with the heating and cooling box, and the second heat exchange module 250 can exchange heat with the vehicle-mounted waste heat system. The second heat exchange module 250 is connected to the first heat exchange module 210a to form a heat exchange loop. Furthermore, the first heat exchange module 210a can absorb heat from the vehicle-mounted waste heat system through the second heat exchange module 250, and then the first heat exchange module 210a exchanges heat with the heating and cooling box to realize the heating or cooling function of the heating and cooling box. In this way, the heat in the vehicle-mounted waste heat system can be used to provide energy for the first heat exchange module 210a, thereby improving the utilization rate of the heat of the vehicle-mounted waste heat system and reducing energy consumption.

[0114] Optionally, when the ambient temperature of the cold and warm box is lower than the first preset temperature, the second heat exchange module 250 exchanges heat with the vehicle waste heat system.

[0115] It is understandable that when the ambient temperature of the cold and warm box is low, for example, the cold and warm box is used in winter, in this case, the refrigerant heat exchange unit 100 mainly realizes the heating function, so the refrigerant heat exchange unit 100 discharges less heat to the external environment, and the generator 222 cannot directly absorb heat from the refrigerant heat exchange unit 100. The cold and warm box heat exchange unit 200 mainly exchanges heat with the coolant heat exchange unit 300 in the vehicle waste heat system through the second heat exchange module 250 to absorb the waste heat generated in the coolant heat exchange unit 300, thereby realizing the heating function of the cold and warm box.

[0116] The first preset temperature may be flexibly set according to actual conditions. For example, the first preset temperature may be set to 23° C. Of course, it may also be set to other temperatures, which are not limited here.

[0117] Optionally, the first heat exchange module 210a further includes a heating element 240, which is disposed in the first heat exchange module 210a; when the ambient temperature is lower than the first preset temperature, the heating element 240 heats the first heat exchange medium.

[0118] In an embodiment of the present application, a heating element 240 is provided in the generator 222. When the ambient temperature is lower than the first preset temperature and the generator 222 cannot directly absorb heat from the refrigerant heat exchange unit 100 or the heat provided by the refrigerant heat exchange unit 100 cannot meet the heating demand of the first heat exchange medium in the generator 222, the heating element 240 can be turned on to heat the first heat exchange medium, thereby improving the heating efficiency.

[0119] Optionally, when the ambient temperature of the heating and cooling box is higher than the second preset temperature, the second heat exchange module 250 exchanges heat with the vehicle waste heat system, and the generator 222 exchanges heat with the refrigerant heat exchange unit 100, and the second preset temperature is greater than or equal to the first preset temperature.

[0120] It is understandable that when the ambient temperature of the cold and warm box is higher than the second preset temperature, for example, the cold and warm box is used in summer, in this case, the refrigerant heat exchange unit 100 mainly realizes the cooling function, and the heat discharged to the outside is relatively large, and then the generator 222 is used to exchange heat with the refrigerant heat exchange unit 100 to realize the recycling of energy in the refrigerant heat exchange unit 100. At the same time, the second heat exchange module 250 exchanges heat with the coolant heat exchange unit 300 to realize the cooling function of the cold and warm box.

[0121] It should be noted that the second preset temperature is greater than or equal to the first preset temperature, wherein the second preset temperature and the first preset temperature can be a certain temperature value or a temperature range. When the second preset temperature and the first preset temperature are both temperature ranges, the second preset temperature is greater than or equal to the first preset temperature means that the lower limit temperature of the second preset temperature is greater than or equal to the upper limit temperature of the first preset temperature.

[0122] Optionally, when the cooling and heating box heat exchange unit 200 is heating, the pressure reducing valve 230 is closed; when the cooling and heating box heat exchange unit 200 is cooling, the pressure reducing valve 230 is opened.

[0123] In the embodiment of the present application, the switching between the heating and cooling functions of the cold and warm box can be realized by setting the pressure reducing valve 230; when the cold and warm box needs to be heated, the pressure reducing valve 230 is closed, the first expansion valve 212 is opened, and the first heat exchange medium is driven by the pump 223 to be input from the absorber 221 to the generator 222, and heat is exchanged with the second heat exchange medium in the refrigerant heat exchange unit 100 in the generator 222 to heat the first heat exchange medium. The first heat exchange medium flows through the condenser 211 and the first expansion valve 212, and the first heat exchange medium does not perform heat exchange in this process. Then the first heat exchange medium flows into the first evaporator 213, and releases heat in the first evaporator 213, thereby realizing the heating function of the cold and warm box.

[0124] When the cold and warm box needs to be cooled, the pressure reducing valve 230 is opened, the first expansion valve 212 is opened, and the first heat exchange medium undergoes a heat exchange reaction in the heat exchange component 210, thereby realizing the refrigeration function of the cold and warm box. The specific refrigeration mechanism has been described in detail above and will not be repeated here.

[0125] The embodiment of the present application also provides a vehicle-mounted cold and warm box, including the cold and warm box heat exchange unit 200 in the above embodiment.

[0126] In the embodiment of the present application, by setting a first heat exchange module 210a and a second heat exchange module 250, the first heat exchange module 210a can exchange heat with the heating and cooling box, and the second heat exchange module 250 can exchange heat with the vehicle-mounted waste heat system. The second heat exchange module 250 is connected to the first heat exchange module 210a to form a heat exchange loop. Furthermore, the first heat exchange module 210a can absorb heat from the vehicle-mounted waste heat system through the second heat exchange module 250, and then the first heat exchange module 210a exchanges heat with the heating and cooling box to realize the heating or cooling function of the heating and cooling box. In this way, the heat in the vehicle-mounted waste heat system can be used to provide energy for the first heat exchange module 210a, thereby improving the utilization rate of the heat of the vehicle-mounted waste heat system and reducing energy consumption.

[0127] Optionally, the vehicle-mounted heating and cooling box further includes a heating and cooling box body, in which a storage cavity for storing objects is provided, and the heating and cooling box heat exchange unit 200 is connected to the heating and cooling box body for exchanging heat in the storage cavity.

[0128] In an embodiment of the present application, the cooling and heating box heat exchange unit 200 can be at least partially arranged in the cooling and heating box body, and the heat exchange effect of the heat exchange component 210 in the cooling and heating box heat exchange unit 200 can be used to heat or cool the accommodating cavity in the cooling and heating box body.

[0129] like Figure 2 As shown, in some embodiments of the present application, the vehicle-mounted cold and warm box further includes a cold storage layer 500, and the cold and warm box body is at least partially provided with the cold storage layer 500.

[0130] In the embodiment of the present application, by at least partially providing a cold storage layer 500 in the cold and warm box body, when the temperature in the accommodation chamber is cooled to a predetermined temperature by using the heat exchange component 210, the temperature of the cold storage layer 500 decreases accordingly. When the heat exchange component 210 stops working, the cold storage layer 500 can absorb heat to keep the temperature in the accommodation chamber relatively low, so that the temperature in the accommodation chamber can be kept low for a period of time without the need to additionally operate the cold and warm box heat exchange system, thereby reducing the energy consumption of the vehicle.

[0131] Optionally, the cold storage layer 500 is a phase change material.

[0132] In the embodiment of the present application, the cold storage layer 500 is formed by using a phase change material. When the heat exchange component 210 cools the storage chamber, the phase change material can undergo a phase change, for example, from a liquid state to a solid state. When the heat exchange component 210 stops working, the phase change material can undergo a phase change again to absorb the heat in the storage chamber, thereby maintaining a relatively low temperature in the storage chamber for a period of time. The phase change material can be an organic phase change material or an inorganic phase change material, for example, water, carbon dioxide, etc.

[0133] Specifically, water can be used as a phase change material. When the temperature in the cold and warm box is reduced to below zero degrees Celsius by the heat provided by the coolant heat exchange unit 300 or the refrigerant heat exchange unit 100, the water changes from liquid to solid ice. When the coolant heat exchange unit 300 and the refrigerant heat exchange unit 100 stop providing heat, the cold and warm box heat exchange unit 200 no longer performs cooling work, and the solid ice can absorb heat from the surrounding environment during the melting process, thereby providing cooling for the cold and warm box.

[0134] like Figure 2 As shown, in some embodiments of the present application, the vehicle-mounted cold and warm box further includes a detection component 600 , which is at least partially disposed in the cold and warm box body and is used to detect the temperature of the cold storage layer 500 .

[0135] In the embodiment of the present application, a detection component 600 is provided in the cooling and heating box body so as to monitor the temperature of the cold storage layer 500 in real time by using the detection component 600, thereby flexibly controlling the working state of the first heat exchange module 210a.

[0136] Among them, the detection element 600 can adopt a contact temperature measuring element or a non-contact temperature measuring element. The contact temperature measuring element is connected to detect the temperature of the cold storage layer 500; the non-contact temperature measuring element is connected to the cold and warm box body to detect the ambient temperature around the cold storage layer 500.

[0137] like Figure 2 As shown, in some embodiments of the present application, the vehicle-mounted refrigerator and heater further includes a controller 700, which is electrically connected to the detection component 600 and the first heat exchange module 210a, respectively, for controlling the operation of the first heat exchange module 210a.

[0138] In the embodiment of the present application, the detection element 600 transmits the detected temperature signal to the controller 700. When it is detected that the temperature of the cold storage layer 500 is higher than its phase change temperature, the controller 700 controls the operation of the first heat exchange module 210a to enable the cold and warm box heat exchange unit 200 to start working and cool down the cold storage layer 500 and the inside of the cold and warm box; when the temperature of the cold storage layer 500 is lower than the phase change temperature, the controller 700 controls the first heat exchange module 210a to turn off to stop the cold and warm box heat exchange unit 200 from working. At this time, the temperature inside the cold and warm box can be maintained for a period of time through the phase change of the cold storage layer 500, thereby reducing the energy consumption of the vehicle.

[0139] The embodiments of the present application also provide a vehicle, including the heat exchange unit 200 of the cooling and heating box in the above embodiment; or including the thermal management system in the above embodiment; or including the vehicle-mounted cooling and heating box in the above embodiment.

[0140] In the embodiment of the present application, by setting a first heat exchange module 210a and a second heat exchange module 250, the first heat exchange module 210a can exchange heat with the heating and cooling box, and the second heat exchange module 250 can exchange heat with the vehicle-mounted waste heat system. The second heat exchange module 250 is connected to the first heat exchange module 210a to form a heat exchange loop. Furthermore, the first heat exchange module 210a can absorb heat from the vehicle-mounted waste heat system through the second heat exchange module 250, and then the first heat exchange module 210a exchanges heat with the heating and cooling box to realize the heating or cooling function of the heating and cooling box. In this way, the heat in the vehicle-mounted waste heat system can be used to provide energy for the first heat exchange module 210a, thereby improving the utilization rate of the heat of the vehicle-mounted waste heat system and reducing energy consumption.

[0141] In addition, by adopting the cold and warm box heat exchange unit 200 of the present application, the cold and warm box does not need to be equipped with an additional compressor, which can reduce energy consumption and costs on the one hand, and also avoid the noise generated by the compressor and cooling fan in the cold and warm box during operation, thereby improving the user experience. In the description of this specification, the reference terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" refer to the specific features, structures, materials or characteristics described in combination with the embodiment or example included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0142] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A cold and warm box heat exchange unit (200), characterized in that: include: A first heat exchange module (210a), wherein the first heat exchange module (210a) is suitable for exchanging heat with a cold or warm box; A second heat exchange module (250), wherein the second heat exchange module (250) is suitable for exchanging heat with a vehicle-mounted waste heat system, and the second heat exchange module (250) is connected to the first heat exchange module (210a) to form a heat exchange loop.

2. The cooling and heating box heat exchange unit (200) according to claim 1, characterized in that: The first heat exchange module (210a) exchanges heat with the cold and warm box via a first heat exchange medium, and the second heat exchange module (250) exchanges heat with the vehicle-mounted waste heat system via a second heat exchange medium. The first heat exchange medium and the second heat exchange medium exchange heat in the second heat exchange module (250).

3. The cooling and heating box heat exchange unit (200) according to claim 2, characterized in that: The first heat exchange module (210a) comprises a heat exchange component (210) and a drive component (220), wherein the heat exchange component (210) is suitable for exchanging heat with the heating and cooling box through the first heat exchange medium; the second heat exchange module (250) is connected to the heat exchange component (210) through the drive component (220) to form the heat exchange circuit, and the drive component (220) is used to drive the first heat exchange medium to circulate in the heat exchange circuit.

4. The cooling and heating box heat exchange unit (200) according to claim 3, characterized in that: The driving component (220) comprises a driving pump (223), the input end of the driving pump (223) is connected to the heat exchange component (210), and the output end of the driving pump (223) is connected to the second heat exchange module (250), and is used to drive the first heat exchange medium to circulate between the heat exchange component (210) and the second heat exchange module (250).

5. The cooling and heating box heat exchange unit (200) according to claim 4, characterized in that: The driving component (220) further comprises a generator (222), wherein an input end of the generator (222) is connected to the second heat exchange module (250), and an output end of the generator (222) is connected to an input end of the heat exchange component (210).

6. The cooling and heating box heat exchange unit (200) according to claim 5, characterized in that: The driving component (220) further comprises an absorber (221), the input end of the absorber (221) being connected to the output end of the heat exchange component (210), the output end of the absorber (221) being connected to the input end of the driving pump (223), and the absorber (221) being used to supplement the first heat exchange medium to the heat exchange circuit.

7. The cooling and heating box heat exchange unit (200) according to claim 6, characterized in that: It also includes a pressure reducing valve (230), one end of the pressure reducing valve (230) is connected to the absorber (221), and the other end of the pressure reducing valve (230) is connected to the generator (222).

8. The cold and warm box heat exchange unit (200) according to any one of claims 5 to 7, characterized in that: The generator (222) is suitable for being connected to a refrigerant heat exchange unit (100) and is used for exchanging heat with the refrigerant heat exchange unit (100).

9. The cold and warm box heat exchange unit (200) according to any one of claims 5 to 7, characterized in that: It also includes a heating element (240), which is arranged in the generator (222) and is used to heat the first heat exchange medium flowing through the generator (222).

10. The cold and warm box heat exchange unit (200) according to any one of claims 3 to 7, characterized in that: The heat exchange component (210) comprises a condenser (211), the input end of the condenser (211) is connected to the output end of the drive component (220), and the output end of the condenser (211) is connected to the input end of the drive component (220).

11. The cold and warm box heat exchange unit (200) according to claim 10, characterized in that: The heat exchange component (210) further comprises a first evaporator (213), wherein an input end of the first evaporator (213) is connected to an output end of the condenser (211), and an output end of the first evaporator (213) is connected to an input end of the driving component (220).

12. The cold and warm box heat exchange unit (200) according to claim 11, characterized in that: The heat exchange component (210) further comprises a first expansion valve (212), wherein the first expansion valve (212) is arranged between the first evaporator (213) and the condenser (211), and the first evaporator (213) is connected to the condenser (211) via the first expansion valve (212).

13. The cold and warm box heat exchange unit (200) according to any one of claims 2 to 7, characterized in that: The first heat exchange medium includes an aqueous ammonia solution or an aqueous lithium bromide solution.

14. The cold and warm box heat exchange unit (200) according to any one of claims 1 to 7, characterized in that: The second heat exchange module (250) comprises a plate heat exchanger, the plate heat exchanger is connected to the first heat exchange module (210a) to form the heat exchange loop, and the plate heat exchanger is suitable for exchanging heat with a vehicle-mounted waste heat system.

15. A thermal management system, characterized in that: include: An on-board waste heat system and a cold-warm box heat exchange unit (200) as claimed in any one of claims 1 to 14, wherein the second heat exchange module (250) is suitable for exchanging heat with the on-board waste heat system.

16. The thermal management system according to claim 15, characterized in that: The vehicle-mounted waste heat system comprises a coolant heat exchange unit (300), the coolant heat exchange unit (300) is connected to the second heat exchange module (250), and the second heat exchange medium in the coolant heat exchange unit (300) flows through the second heat exchange module (250).

17. The thermal management system according to claim 16, characterized in that: The coolant heat exchange unit (300) comprises a high-pressure system heat dissipation module (313), and the high-pressure system heat dissipation module (313) is connected to the second heat exchange module (250).

18. The thermal management system according to claim 17, characterized in that: The coolant heat exchange unit (300) further includes a heat exchanger (315), one end of the heat exchanger (315) is connected to the high-pressure system heat dissipation module (313), and the other end is connected to the second heat exchange module (250), and the heat exchanger (315) is suitable for exchanging heat with a heat exchange unit other than the coolant heat exchange unit (300) in the vehicle-mounted waste heat system.

19. The thermal management system according to claim 18, characterized in that: The vehicle-mounted waste heat system also includes a refrigerant heat exchange unit (100), wherein the refrigerant heat exchange unit (100) is connected to the heat exchanger (315), and the refrigerant heat exchange unit (100) exchanges heat with the coolant heat exchange unit (300) through the heat exchanger (315).

20. The thermal management system according to claim 19, characterized in that: The refrigerant heat exchange unit (100) comprises a compressor (111), and the first heat exchange module (210a) is connected to the output end of the compressor (111) for heat exchange.

21. The thermal management system according to claim 20, characterized in that: The refrigerant heat exchange unit (100) further comprises an off-vehicle heat exchanger (112), the off-vehicle heat exchanger (112) being connected to the compressor (111), and the first heat exchange module (210a) being connected between the off-vehicle heat exchanger (112) and the compressor (111).

22. The thermal management system according to claim 21, characterized in that: The refrigerant heat exchange unit (100) further comprises an in-vehicle heat exchange module (100a), and the in-vehicle heat exchange module (100a) is connected to the compressor (111); And / or, the refrigerant heat exchange unit (100) further includes a battery heat exchange module (100b), and the battery heat exchange module (100b) is connected to the compressor (111).

23. The thermal management system according to claim 19, characterized in that: The refrigerant heat exchange unit (100) is a carbon dioxide heat exchange system.

24. A heat exchange method for a cold and warm box heat exchange unit (200), applied to the cold and warm box heat exchange unit (200) according to any one of claims 1 to 14, characterized in that: include: Exchanging heat with a cold or warm box through a first heat exchange module (210a); Heat is exchanged with the vehicle-mounted waste heat system via the second heat exchange module (250), and the second heat exchange module (250) is connected to the first heat exchange module (210a) to form a heat exchange loop.

25. The heat exchange method according to claim 24, characterized in that: When the ambient temperature of the cooling and heating box is lower than a first preset temperature, the second heat exchange module (250) exchanges heat with the vehicle-mounted waste heat system.

26. The heat exchange method according to claim 25, characterized in that: The first heat exchange module (210a) further comprises a heating element (240), wherein the heating element (240) is arranged in the first heat exchange module (210a); when the ambient temperature is lower than the first preset temperature, the heating element (240) heats the first heat exchange medium.

27. The heat exchange method according to claim 26, characterized in that: When the ambient temperature of the heating and cooling box is higher than a second preset temperature, the second heat exchange module (250) exchanges heat with the vehicle-mounted waste heat system, and the generator (222) exchanges heat with the refrigerant heat exchange unit (100), and the second preset temperature is greater than or equal to the first preset temperature.

28. The heat exchange method according to any one of claims 24 to 27, characterized in that: When the cooling and heating box heat exchange unit (200) is heating, the pressure reducing valve (230) is closed; when the cooling and heating box heat exchange unit (200) is cooling, the pressure reducing valve (230) is opened.

29. A vehicle-mounted cooling and heating box, characterized in that: include: A cold and warm box heat exchange unit (200) as claimed in any one of claims 1 to 14.

30. The vehicle-mounted cooling and heating box according to claim 29, characterized in that: It also comprises a cooling and heating box body, wherein a storage cavity for storing objects is provided in the cooling and heating box body, and the cooling and heating box heat exchange unit (200) is connected to the cooling and heating box body and is used for exchanging heat in the storage cavity.

31. The vehicle-mounted cooling and heating box according to claim 30, characterized in that: It also comprises a cold storage layer (500), and the cold storage layer (500) is at least partially provided in the cold and warm box body.

32. The vehicle-mounted cooling and heating box according to claim 31, characterized in that: The cold storage layer (500) is a phase change material.

33. The vehicle-mounted cooling and heating box according to claim 32, characterized in that: Also includes: A detection component (600), wherein the detection component (600) is at least partially disposed in the cooling and heating box body and is used to detect the temperature of the cold storage layer (500).

34. The vehicle-mounted cooling and heating box according to claim 33, characterized in that: Also includes: A controller (700), wherein the controller (700) is electrically connected to the detection element (600) and the first heat exchange module (210a) respectively, and is used to control the operation of the first heat exchange module (210a).

35. A vehicle, characterized in that: It comprises a heat exchange unit (200) for a cold and warm box as described in any one of claims 1 to 14; or comprises a thermal management system as described in any one of claims 15 to 23; or comprises an on-board cold and warm box as described in any one of claims 29 to 34.

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