In-vehicle thermal management system, method for controlling in-vehicle thermal management system, computer program product, electronic device, and vehicle

Abstract

The invention relates to a vehicle-mounted thermal management system, a control method of the vehicle-mounted thermal management system, a computer program product, electronic equipment and a vehicle. The vehicle-mounted thermal management system comprises a compressor, an air conditioner branch and a refrigerator branch. The air conditioning branch is provided with an air conditioning evaporator connected to the compressor; the refrigerator branch is provided with a refrigerator evaporator connected to the compressor; the vehicle-mounted heat management system has a first refrigeration mode; in the first refrigeration mode, the air conditioner evaporator communicates with the compressor to refrigerate a vehicle cabin, the refrigerator evaporator communicates with the compressor to refrigerate a vehicle-mounted refrigerator, and the evaporation pressure of a heat exchange working medium in the air conditioner evaporator is equal to the evaporation pressure of a heat exchange working medium in the refrigerator evaporator.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle-mounted equipment, and in particular to a vehicle-mounted thermal management system, a control method for a vehicle-mounted thermal management system, a computer program product, an electronic device, and a vehicle. Background Art

[0002] In the related art, the vehicle thermal management system uses the refrigerant supplied by the compressor to the air conditioner for cabin cooling, while the vehicle refrigerator uses a cold storage agent to provide cooling, and the cooling capacity of the refrigerant is not fully utilized. Summary of the Invention

[0003] The present invention provides a vehicle thermal management system, a control method for the vehicle thermal management system, a computer program product, an electronic device, and a vehicle. These adapt the refrigerant to the heat exchange requirements of various usage scenarios, including vehicle refrigerators and vehicle air conditioners, thereby expanding the application scenarios of refrigerants in vehicle thermal management systems and at least partially resolving the aforementioned technical issues.

[0004] In order to achieve the above objectives, according to a first aspect of the present application, there is provided a vehicle thermal management system, comprising:

[0005] compressor;

[0006] an air conditioning branch having an air conditioning evaporator connected to the compressor;

[0007] a refrigerator branch having a refrigerator evaporator connected to the compressor;

[0008] In which, the vehicle-mounted thermal management system has at least a first cooling mode; in the first cooling mode, the air-conditioning evaporator is connected to the compressor to cool the vehicle cabin, and the refrigerator evaporator is connected to the compressor to cool the vehicle-mounted refrigerator, and the evaporation pressure of the heat exchange medium in the air-conditioning evaporator is equal to the evaporation pressure of the heat exchange medium in the refrigerator evaporator.

[0009] Optionally, in some embodiments of the present application, the refrigerator branch further has:

[0010] The first regulating valve is connected between the compressor and the refrigerator evaporator and is used to adjust the evaporation pressure of the heat exchange medium in the refrigerator evaporator.

[0011] Optionally, in some embodiments of the present application, the air conditioning branch further has:

[0012] The second regulating valve is connected between the compressor and the air-conditioning evaporator, and is used to adjust the evaporation pressure of the heat exchange medium in the air-conditioning evaporator.

[0013] Optionally, in some embodiments of the present application, the refrigerator branch further has:

[0014] The cold storage heat exchanger is used to exchange heat between the cold storage medium and the vehicle refrigerator;

[0015] The vehicle-mounted thermal management system further has a second cooling mode; in the second cooling mode, the refrigerator branch cools the vehicle-mounted refrigerator through the cold storage medium.

[0016] Optionally, in some embodiments of the present application, in the second refrigeration mode, the compressor is disconnected from the refrigerator evaporator.

[0017] Optionally, in some embodiments of the present application, the cold storage heat exchanger includes:

[0018] a cold storage evaporator connected to the compressor;

[0019] The vehicle thermal management system also has a third cooling mode; in the third cooling mode, the compressor is connected to the cold storage evaporator so that the heat exchange medium is suitable for cooling the cold storage medium through the cold storage evaporator.

[0020] Optionally, in some embodiments of the present application, in the third refrigeration mode, the compressor is disconnected from the air-conditioning branch to prevent the heat exchange medium from being output from the compressor to the air-conditioning evaporator.

[0021] Optionally, in some embodiments of the present application, the cold storage evaporator is connected between the refrigerator evaporator and the working medium inlet of the compressor.

[0022] Optionally, in some embodiments of the present application, the cold storage heat exchanger further includes:

[0023] The heat exchange body is formed with a space for accommodating the cold storage medium;

[0024] Wherein, in the second refrigeration mode, the cold storage medium cools the vehicle refrigerator through the heat exchange body.

[0025] Optionally, in some embodiments of the present application, the cold storage evaporator is arranged in the space of the heat exchange body that accommodates the cold storage working medium.

[0026] Optionally, in some embodiments of the present application, the vehicle thermal management system further comprises: a temperature sensor for detecting the temperature of the cold storage medium;

[0027] The controller is electrically connected to the temperature sensor and is suitable for controlling the cooling mode of the vehicle thermal management system according to the temperature of the cold storage medium.

[0028] Optionally, in some embodiments of the present application, the vehicle thermal management system further comprises: an air-conditioning temperature and pressure sensor, provided on the air-conditioning branch, for detecting the temperature and pressure of the heat exchange medium flowing from the air-conditioning evaporator to the compressor;

[0029] A refrigerator temperature and pressure sensor, provided on the refrigerator branch line, for detecting the temperature and pressure of the heat exchange medium flowing from the refrigerator evaporator to the compressor;

[0030] Wherein, the air conditioner temperature and pressure sensor and the refrigerator temperature and pressure sensor are respectively electrically connected to the sensor.

[0031] Optionally, in some embodiments of the present application, the vehicle thermal management system further includes:

[0032] An output control valve is provided between the compressor and the refrigerator branch, and is used to control the flow of the heat exchange medium from the compressor to the refrigerator evaporator;

[0033] Wherein, the output control valve has a first output state and a second output state; in the first output state, the output control valve connects the compressor and the refrigerator evaporator; in the second output state, the output control valve disconnects the compressor and the refrigerator evaporator.

[0034] Optionally, in some embodiments of the present application, the output control valve is also connected between the compressor and the air-conditioning evaporator; in the first output state, the output control valve connects the compressor and the air-conditioning evaporator.

[0035] Optionally, in some embodiments of the present application, in the second output state, the output control valve connects the compressor and the air-conditioning evaporator.

[0036] Optionally, in some embodiments of the present application, the output control valve also has a third output state; in the third output state, the output control valve connects the compressor and the refrigerator evaporator, and the output control valve disconnects the compressor and the air conditioner evaporator.

[0037] Optionally, in some embodiments of the present application, the vehicle thermal management system further includes:

[0038] A reflux control valve is provided between the working medium inlet of the compressor and the refrigerator branch, and is used to control the on-off flow of the heat exchange working medium from the refrigerator evaporator back to the compressor;

[0039] In which, the reflux control valve has a first reflux state and a second reflux state; in the first reflux state, the reflux control valve connects the compressor and the refrigerator evaporator; in the second reflux state, the reflux control valve disconnects the connection between the compressor and the refrigerator evaporator.

[0040] Optionally, in some embodiments of the present application, the reflux control valve is also connected between the compressor and the air-conditioning evaporator; in the second reflux state, the reflux control valve connects the compressor and the air-conditioning evaporator to allow the heat exchange medium to flow back from the air-conditioning evaporator to the compressor.

[0041] Optionally, in some embodiments of the present application, in the first reflux state, the reflux control valve connects the compressor and the refrigerator evaporator.

[0042] Optionally, in some embodiments of the present application, the reflux control valve also has a third reflux state; in the third reflux state, the reflux control valve connects the compressor and the refrigerator evaporator, and the reflux control valve disconnects the connection between the compressor and the air conditioner evaporator.

[0043] According to a second aspect of the present application, a control method for a vehicle thermal management system is further provided, the vehicle thermal management system comprising:

[0044] compressor;

[0045] an air conditioning branch having an air conditioning evaporator connected to the compressor;

[0046] a refrigerator branch having a refrigerator evaporator connected to the compressor;

[0047] The vehicle thermal management system has at least a first cooling mode; in the first cooling mode, the compressor is connected to the air conditioning branch to cool the vehicle cabin, and the compressor is connected to the refrigerator branch to cool the vehicle refrigerator, and the evaporation pressure of the heat exchange medium in the air conditioning evaporator is the same as the evaporation pressure of the heat exchange medium in the refrigerator evaporator;

[0048] The control method of the vehicle thermal management system includes:

[0049] When a first preset condition is met, the vehicle thermal management system is controlled to be in a first cooling mode.

[0050] Optionally, in some embodiments of the present application, the refrigerator branch further comprises: a first regulating valve connected between the compressor and the refrigerator evaporator;

[0051] The air conditioning branch further comprises:

[0052] a second regulating valve connected between the compressor and the air conditioner evaporator;

[0053] When a first preset condition is met, controlling the vehicle thermal management system to be in the first cooling mode includes:

[0054] In the first refrigeration mode, the opening of the first regulating valve is adjusted to control the evaporation pressure of the heat exchange medium flowing into the air conditioner evaporator; and / or, the opening of the second regulating valve is adjusted to control the evaporation pressure of the heat exchange medium in the refrigerator evaporator.

[0055] Optionally, in some embodiments of the present application, the refrigerator branch further has:

[0056] The cold storage heat exchanger is used to exchange heat between the cold storage medium and the vehicle refrigerator;

[0057] The vehicle-mounted thermal management system further has a second cooling mode; in the second cooling mode, the refrigerator branch cools the vehicle-mounted refrigerator through the cold storage medium;

[0058] The control method of the vehicle thermal management system further includes:

[0059] When a second preset condition is met, the vehicle thermal management system is controlled to be in the second cooling mode.

[0060] Optionally, in some embodiments of the present application, in the second refrigeration mode, the compressor is disconnected from the refrigerator evaporator.

[0061] Optionally, in some embodiments of the present application, the cold storage heat exchanger includes:

[0062] a cold storage evaporator connected to the compressor;

[0063] The vehicle thermal management system further has a third cooling mode; in the third cooling mode, the compressor is connected to the cold storage evaporator so that the heat exchange medium is suitable for cooling the cold storage medium through the cold storage evaporator;

[0064] The control method of the vehicle thermal management system further includes:

[0065] When a third preset condition is met, the vehicle thermal management system is controlled to be in the third cooling mode.

[0066] Optionally, in some embodiments of the present application, in the third refrigeration mode, the compressor is disconnected from the air-conditioning branch to prevent the heat exchange medium from being output from the compressor to the air-conditioning evaporator.

[0067] Optionally, in some embodiments of the present application, the vehicle thermal management system further includes:

[0068] A temperature sensor, used to detect the temperature of the cold storage medium;

[0069] The first preset condition includes:

[0070] The vehicle cabin has a cooling demand, and the temperature of the cold storage medium is greater than or equal to a preset temperature threshold;

[0071] And / or, the second preset condition includes:

[0072] The temperature of the cold storage medium is lower than a preset temperature threshold;

[0073] And / or, the third preset condition includes:

[0074] There is no cooling demand for the vehicle cabin, and the temperature of the cold storage medium is greater than or equal to a preset temperature threshold.

[0075] Optionally, in some embodiments of the present application, the vehicle thermal management system further includes:

[0076] An output control valve is provided between the compressor and the refrigerator branch, and is used to control the flow of the heat exchange medium from the compressor to the refrigerator evaporator;

[0077] When the first preset condition is met, controlling the vehicle thermal management system to be in the first cooling mode further includes:

[0078] The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

[0079] Optionally, in some embodiments of the present application, the output control valve is further connected between the compressor and the air conditioner evaporator;

[0080] When the first preset condition is met, controlling the vehicle thermal management system to be in the first cooling mode further includes:

[0081] The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

[0082] Optionally, in some embodiments of the present application, the control method, when a second preset condition is satisfied, controlling the vehicle thermal management system to be in the second cooling mode, includes:

[0083] The output control valve is controlled to disconnect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

[0084] Optionally, in some embodiments of the present application, when a second preset condition is met, controlling the vehicle thermal management system to be in the second cooling mode further includes:

[0085] The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

[0086] Optionally, in some embodiments of the present application, when a third preset condition is satisfied, controlling the vehicle thermal management system to be in the third cooling mode includes:

[0087] The output control valve is controlled to disconnect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

[0088] Optionally, in some embodiments of the present application, when a third preset condition is met, controlling the vehicle thermal management system to be in the third cooling mode further includes:

[0089] The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

[0090] According to a third aspect of the present application, a control method for a vehicle thermal management system is further provided, comprising:

[0091] According to the cooling demand of the vehicle cabin, the evaporation pressure of the heat exchange medium in the air conditioner evaporator and the refrigerator evaporator is controlled.

[0092] Optionally, in some embodiments of the present application, the control method further includes:

[0093] When the first execution condition is met, a control signal is output to cause the heat exchange medium of the vehicle thermal management system to enter the air conditioner evaporator and the refrigerator evaporator.

[0094] Optionally, in some embodiments of the present application, the control method further includes:

[0095] determining a cooling mode of the vehicle thermal management system according to vehicle status information;

[0096] The cooling mode includes a dual-opening mode, in which the air conditioner evaporator and the refrigerator evaporator of the vehicle-mounted thermal management system are in operation.

[0097] Optionally, in some embodiments of the present application, the first preset condition includes:

[0098] The vehicle thermal management system is in a dual-on mode, and the temperature of the cold storage medium of the vehicle thermal management system is greater than or equal to a preset temperature threshold.

[0099] Optionally, in some embodiments of the present application, the control method further includes:

[0100] When the second execution condition is met, a control signal is outputted to prevent the heat exchange medium of the vehicle thermal management system from entering the refrigerator evaporator.

[0101] Optionally, in some embodiments of the present application, the second execution condition includes:

[0102] The temperature of the cold storage medium of the vehicle thermal management system is lower than a preset temperature threshold.

[0103] Optionally, in some embodiments of the present application, the control method further includes:

[0104] When a third preset condition is met, the temperature of the cold storage medium is controlled according to the temperature difference between the cold storage medium and the heat exchange medium of the vehicle thermal management system.

[0105] Optionally, in some embodiments of the present application, the cooling mode further includes: a cold storage mode, in which the heat exchange medium of the vehicle thermal management system and the cold storage medium perform heat exchange, and the air conditioner evaporator is shut down;

[0106] The third preset condition includes:

[0107] The vehicle thermal management system is in a cold storage mode, and the temperature of the cold storage medium of the vehicle thermal management system is greater than or equal to a preset temperature threshold.

[0108] According to a fourth aspect of the present application, a computer program product is also provided, comprising a computer program, which implements the steps of the control method of the vehicle thermal management system as described above when executed by a processor.

[0109] According to a fifth aspect of the present application, an electronic device is further provided, comprising:

[0110] a memory storing a computer program;

[0111] A processor is used to execute the computer program in the memory to implement the steps of the control method of the vehicle thermal management system as described above.

[0112] According to the sixth aspect of the present application, a vehicle is also provided, comprising the vehicle-mounted thermal management system as described above, or a control method for implementing the vehicle-mounted thermal management system as described above; or comprising the computer program product as described above; or comprising the electronic device as described above.

[0113] The beneficial effects of the present application are: providing a vehicle-mounted refrigerator, a vehicle-mounted thermal management system, a heat exchange method, a control method of the vehicle-mounted thermal management system, a computer program product, an electronic device and a vehicle that take into account the refrigeration needs of the vehicle-mounted refrigerator and the refrigeration needs of the vehicle-mounted air conditioner.

[0114] More specifically, some embodiments of the present application may produce the following specific beneficial effects:

[0115] This application provides a solution. In some usage scenarios, by balancing the parameters of the heat exchange medium in the air-conditioning branch and the refrigerator branch, the heat exchange medium can be used for cooling the vehicle cabin and the vehicle refrigerator at the same time, and the vehicle thermal management system can maintain stable operation, thereby expanding the applicable scenarios of the heat exchange medium and making more full use of the heat exchange capacity of the heat exchange medium.

[0116] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0117] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0118] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0119] Figure 1 is a schematic diagram of the overall structure of the vehicle thermal management system provided in an exemplary embodiment of the present application in a first cooling mode;

[0120] Figure 2 yes Figure 1 The overall structural diagram of the vehicle thermal management system shown is in the first cooling state of the second cooling mode;

[0121] Figure 3 yes Figure 1 The overall structural diagram of the vehicle thermal management system shown is in the second cooling state of the second cooling mode;

[0122] Figure 4 yes Figure 1 The overall structural diagram of the vehicle thermal management system in the third cooling mode is shown;

[0123] Figure 5 is a schematic diagram of the overall structure of a vehicle refrigerator provided in an exemplary embodiment of the present application;

[0124] Figure 6 This Figure 5 An exploded view of the vehicle refrigerator is shown;

[0125] Figure 7 is a schematic diagram of the main steps of a first method for controlling a vehicle thermal management system provided in an exemplary embodiment of the present application;

[0126] Figure 8 is a schematic diagram of the main steps of a second method for controlling a vehicle thermal management system provided in an exemplary embodiment of the present application;

[0127] Figure 9 is a schematic diagram of the control relationship of part of the structure of the vehicle thermal management system provided in an exemplary embodiment of the present application;

[0128] Figure 10 is a schematic diagram of some specific steps of a control method for a vehicle thermal management system provided in an exemplary embodiment of the present application in a specific example;

[0129] Figure 11 1 is a schematic diagram of the steps of a control method for a vehicle thermal management system provided in an exemplary embodiment of the present application when there is no cooling demand;

[0130] Figure 12 FIG is a schematic diagram of the steps of the control method of the vehicle thermal management system provided in an exemplary embodiment of the present application when a single air-conditioning cooling demand is required;

[0131] Figure 13 FIG is a schematic diagram of the steps of the control method of the vehicle thermal management system provided in the exemplary embodiment of the present application when the refrigerator needs to store energy;

[0132] Figure 14 This is a schematic diagram of the steps of the control method of the vehicle thermal management system provided in an exemplary embodiment of the present application when a single refrigerator requires cooling;

[0133] Figure 15 This is a schematic diagram of some steps of the control method of the vehicle thermal management system provided in an exemplary embodiment of the present application when the refrigerator and air conditioner are both turned on for cooling;

[0134] Figure 16 This is another schematic diagram of the steps of the control method of the vehicle thermal management system provided in an exemplary embodiment of the present application when the refrigerator and air conditioner are both turned on for cooling;

[0135] Figure 17 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application;

[0136] Figure 18 It is a schematic diagram of the overall structure of a vehicle provided in an exemplary embodiment of the present application.

[0137] Description of reference numerals:

[0138] 10. Vehicles;

[0139] 100, vehicle refrigerator; 100a, receiving cavity; 100b, storage compartment;

[0140] 110, coil; 120, cover; 130, enclosure; 140, fan; 150, thermal insulation; 160, sliding base; 170, storage temperature sensor; 180, body;

[0141] 1000. Vehicle thermal management system;

[0142] 1100, compressor;

[0143] 1200, air conditioning branch; 1210, air conditioning evaporator; 1220, second regulating valve; 1230, air conditioning temperature and pressure sensor;

[0144] 1300, refrigerator branch; 1310, refrigerator evaporator; 1320, first regulating valve; 1330, cold storage heat exchanger; 1331, cold storage evaporator; 1332, heat exchanger body; 1340, refrigerator temperature and pressure sensor;

[0145] 1400, condenser;

[0146] 1500, temperature sensor;

[0147] 1600, condensation temperature and pressure sensor;

[0148] 1700, output control valve;

[0149] 1800. Backflow control valve. DETAILED DESCRIPTION

[0150] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0151] Reference Figures 1 to 4 As shown, in a first aspect of the present application, a vehicle-mounted thermal management system 1000 is provided. The vehicle-mounted thermal management system 1000 can be used to cool at least an onboard refrigerator 100 and the vehicle cabin. In a specific embodiment, the onboard refrigerator 100 can be integrated into the vehicle as part of the onboard thermal management system 1000. The working fluids used to achieve the cooling function in the onboard thermal management system 1000 can include, for example, cold storage working fluids and heat exchange working fluids.

[0152] As a specific example, a cold storage medium can be stored in the vehicle refrigerator 100 to cool the vehicle refrigerator 100 in some scenarios. The heat exchange medium can also be used to meet the cooling needs of the vehicle cabin and the vehicle refrigerator 100110 in some usage scenarios. Because the vehicle refrigerator 100100 uses two working fluids, the cold storage medium and the heat exchange medium can be used to achieve heat exchange in different usage scenarios. For example, the heat exchange medium is the refrigerant used in the vehicle air-conditioning system, and the cold storage medium can be a refrigerant integrated in the vehicle refrigerator 100110. The refrigerant is, for example, a substance that accumulates cold energy before cooling the vehicle refrigerator 100 and exchanges heat with the vehicle refrigerator 100 during use to achieve cooling of the vehicle refrigerator 100. Specific examples include polyvinyl alcohol-borax refrigerant, phase change refrigerant, etc.

[0153] Reference Figure 1 As shown, the vehicle thermal management system 1000 includes: a compressor 1100 , an air conditioning branch 1200 , a refrigerator branch 1300 and a condenser 1400 .

[0154] The compressor 1100 is used to process the heat exchange medium, for example, to increase the temperature and pressure of the heat exchange medium.

[0155] The air conditioning branch 1200 has an air conditioning evaporator 1210 connected to the compressor 1100, so that the heat exchange medium processed by the compressor 1100 can flow to the air conditioning evaporator 1210, and the air conditioning evaporator 1210 can be used to cool the vehicle cabin.

[0156] The refrigerator branch 1300 has a refrigerator evaporator 1310 connected to the compressor 1100, so that the heat exchange medium processed by the compressor 1100 can flow to the refrigerator evaporator 1310, and the refrigerator evaporator 1310 can be used to cool the vehicle air conditioner.

[0157] The condenser 1400 can be connected to the working medium outlet of the compressor 1100, so that the heat exchange working medium can flow out of the compressor 1100, flow through the condenser 1400 and then flow to the air conditioner evaporator 1210 or the refrigerator evaporator 1310 to realize the circulation operation of the heat exchange working medium.

[0158] Reference Figure 1 As shown, the vehicle thermal management system 1000 has at least a first cooling mode. In the first cooling mode, the air conditioner evaporator 1210 is connected to the compressor 1100 to cool the vehicle cabin, and the refrigerator evaporator 1310 is connected to the compressor 1100 to cool the vehicle refrigerator 100. In other words, in the first cooling mode, the heat exchange medium is suitable for cooling both the vehicle cabin and the vehicle refrigerator 100.

[0159] In the related art, since the cooling demand of the vehicle cabin is often above 0°C, and the vehicle refrigerator 100 is for refrigeration purposes, its cooling demand may be lower than 0°C. At this time, the cooling demand of the vehicle cabin and the vehicle refrigerator 100 is quite different. In this way, when the refrigerator evaporator 1310 and the air-conditioning evaporator 1210 of the vehicle refrigerator 100 share a compressor, there will be a pressure imbalance problem, which will cause the entire system to fail to operate normally.

[0160] In the present application, in the first cooling mode, the evaporation pressure of the heat exchange medium in the air conditioner evaporator 1210 is equal to the evaporation pressure of the heat exchange medium in the refrigerator evaporator 1310, thereby ensuring normal system operation. In other words, in the first cooling mode, the evaporation pressure of the heat exchange medium in the air conditioner evaporator 1210 is equal to the evaporation pressure of the heat exchange medium in the refrigerator evaporator 1310. This solution ensures that the heat exchange medium can flow normally in the flow path of the vehicle thermal management system 1000.

[0161] Therefore, the present application provides a solution. In some usage scenarios, by balancing the evaporation pressure of the heat exchange medium in the air-conditioning branch 1200 and the refrigerator branch 1300, the heat exchange medium can be used for cooling the vehicle cabin and the vehicle refrigerator 100 at the same time, and the vehicle thermal management system 1000 can maintain stable operation, thereby expanding the applicable scenarios of the heat exchange medium and making more full use of the heat exchange capacity of the heat exchange medium.

[0162] Specifically, in the first cooling mode, the cabin's cooling needs are prioritized to provide users with a more comfortable cabin temperature. For example, if the cabin's cooling needs are above 0°C and the refrigerator's cooling needs are below 0°C, the cabin can be cooled to above 0°C. Since the evaporation pressure of the heat exchange medium in the air conditioner evaporator 1210 is equal to the evaporation pressure of the heat exchange medium in the refrigerator evaporator 1310, the cooling temperature of the vehicle refrigerator 100 is also above 0°C.

[0163] As a specific plan, refer to Figure 1 As shown, the refrigerator branch 1300 further includes a first regulating valve 1320 .

[0164] The first regulating valve 1320 is connected between the compressor 1100 and the refrigerator evaporator 1310 and is used to adjust the evaporation pressure of the heat exchange medium in the refrigerator evaporator 1310. More specifically, the first regulating valve 1320 is connected between the condenser 1400 and the refrigerator evaporator 1310 and adjusts the parameters (such as temperature and pressure) of the heat exchange medium before the heat exchange medium flows into the refrigerator evaporator 1310. The first regulating valve 1320 is, for example, an electronic expansion valve, which adjusts the heat exchange medium parameters by throttling the heat exchange medium.

[0165] Therefore, by providing the first regulating valve 1320 , the evaporation pressure of the heat exchange medium in the refrigerator evaporator 1310 can be specifically controlled.

[0166] Reference Figure 1 As shown, the air conditioning branch 1200 further has a second regulating valve 1220 .

[0167] The second regulating valve 1220 is connected between the compressor 1100 and the air conditioner evaporator 1210 and is used to adjust the evaporation pressure of the heat exchange medium in the air conditioner evaporator 1210. More specifically, the first regulating valve 1320 is connected between the condenser 1400 and the air conditioner evaporator 1210 and is used to adjust the parameters (such as temperature and pressure) of the heat exchange medium before the heat exchange medium flows into the air conditioner evaporator 1210. The first regulating valve 1320 is, for example, an electronic expansion valve, which adjusts the heat exchange medium parameters by throttling the heat exchange medium.

[0168] Therefore, by providing the first regulating valve 1320 , the evaporation pressure of the heat exchange medium in the air-conditioning evaporator 1210 can be specifically controlled.

[0169] In addition, the parameters of the heat exchange medium in the refrigerator branch 1300 and the air conditioning branch 1200 can be adjusted through the first regulating valve 1320 and the second regulating valve 1220, so as to more accurately achieve the purpose of making the evaporation pressure of the heat exchange medium in the air conditioning evaporator 1210 and the evaporation pressure of the heat exchange medium in the refrigerator evaporator 1310 equal.

[0170] The vehicle thermal management system 1000 may have more cooling modes. For example, the vehicle refrigerator 100 may utilize a cold storage medium in some cooling modes.

[0171] As an example, see Figure 1 、 Figure 2 and Figure 3 As shown, the refrigerator branch 1300 further includes a cold storage heat exchanger 1330. The cold storage heat exchanger 1330 is used to exchange heat between the cold storage medium and the vehicle refrigerator 100. That is, the cold storage medium can exchange heat with the interior space or some components of the vehicle refrigerator 100 at the cold storage heat exchanger 1330, thereby utilizing the cold storage medium to cool the storage compartment 100b of the vehicle refrigerator 100 for storing items.

[0172] Accordingly, the vehicle thermal management system 1000 also has a second cooling mode. In this second cooling mode, the refrigerator branch 1300 uses the cold storage medium to cool the vehicle refrigerator 100. That is, in some usage scenarios, the cooling of the vehicle refrigerator 100 may not rely on the heat exchange medium. For example, in usage scenarios where the cooling demand of the vehicle refrigerator 100 is below 0°C, the cold storage medium can be used to cool the vehicle refrigerator 100. Of course, in situations where there is no cooling demand in the vehicle cabin, the heat exchange medium may still be used to cool the vehicle refrigerator 100.

[0173] In the second refrigeration mode, the compressor 1100 is disconnected from the refrigerator evaporator 1310, so that the heat exchange medium cannot flow to the refrigerator branch 1300. That is, at this time the heat exchange medium does not participate in the refrigeration of the vehicle refrigerator 100, which makes the refrigeration temperature of the vehicle refrigerator 100 easier to control.

[0174] Specifically, according to whether the air conditioning branch 1200 is working, the second cooling mode also includes a first cooling state and a second cooling state. Figure 2 As shown, in the first cooling state, the air conditioning branch 1200 is working, that is, the compressor 1100 is connected to the air conditioning evaporator 1210, and the heat exchange medium can cool the vehicle cabin. Figure 3 As shown, in the second cooling state, the air-conditioning branch 1200 does not work, that is, the compressor 1100 and the air-conditioning evaporator 1210 are disconnected, or the compressor 1100 does not work, and the heat exchange medium does not cool the vehicle cabin.

[0175] As a specific plan, refer to Figure 1 and Figure 4 As shown, the cold storage heat exchanger 1330 includes a cold storage evaporator 1331 . The cold storage evaporator 1331 is connected to the compressor 1100 , that is, the heat exchange medium can flow from the compressor 1100 to the cold storage evaporator 1331 .

[0176] Accordingly, the onboard thermal management system 1000 also has a third cooling mode; in this mode, the compressor 1100 communicates with the cold storage evaporator 1331, allowing the heat exchange medium to cool the cold storage medium through the cold storage evaporator 1331. Therefore, in scenarios where there is no cabin cooling demand, the heat exchange medium can be used to cool the cold storage medium, for example, to -15°C or below. This allows the onboard thermal management system 1000 to meet cooling requirements in scenarios where the cabin needs cooling and the refrigerator needs to cool quickly.

[0177] As a specific example, when a vehicle is just started and still parked, the cabin is often not cooled. In this case, the heat exchange medium can be used to cool the cold storage medium, for example, by reducing the refrigerant serving as the cold storage medium to below 0°C. In this way, when both the cabin and the onboard refrigerator 100 require cooling, the heat exchange medium cools the cabin while the heat exchange medium cools the onboard refrigerator 100, facilitating rapid cooling of the onboard refrigerator 100.

[0178] For more specific solutions, refer to Figure 4 As shown, in the third cooling mode, the compressor 1100 and the air conditioning branch 1200 are disconnected to prevent the heat exchange medium from being output from the compressor 1100 to the air conditioning evaporator 1210, so that the heat exchange medium can be fully used to cool the cold storage medium.

[0179] The cold storage evaporator 1331 can be connected between the refrigerator evaporator 1310 and the working medium inlet of the compressor 1100, so that in the first refrigeration mode and the third refrigeration mode, the heat exchange working medium flows from the refrigerator evaporator 1310 to the cold storage evaporator 1331, so that the heat exchange working medium can fully cool the vehicle refrigerator 100 or the cold storage working medium in the corresponding refrigeration mode.

[0180] As a specific solution, the cold storage heat exchanger 1330 further includes: a heat exchange body 1332 .

[0181] The heat exchange body 1332 is formed with a space for accommodating the cold storage medium, that is, the cold storage medium cools the vehicle refrigerator 100 through the heat exchange body 1332. In the second cooling mode, the cold storage medium cools the vehicle refrigerator 100 through the heat exchange body 1332.

[0182] Reference Figure 5 and Figure 6 The figure shows a schematic diagram of the structure of a vehicle refrigerator that can be specifically configured in the vehicle thermal management system 1000 in this application. Figure 5 and Figure 6 In the specific embodiment of the example, the first regulating valve 1320 , the refrigerator evaporator 1310 , the cold storage evaporator 1331 and the heat exchange body 1332 are all integrated on the vehicle refrigerator 100 .

[0183] The refrigerator evaporator 1310 is, for example, a coil 110 integrated on the vehicle refrigerator 100 , which is disposed in the peripheral area of the storage chamber 100 b , and cools the storage chamber 100 b when the heat exchange medium passes through the coil 110 .

[0184] The heat exchange body 1332 forms a chamber 100a for accommodating a cold storage medium. When the vehicle refrigerator 100 is in the second cooling mode, the cold storage medium cools the storage compartment 100b of the vehicle refrigerator 100, for example, through convection heat transfer. In a more specific embodiment, the cold storage medium can be concentrated within the chamber 100a. Alternatively, the vehicle refrigerator 100 can be equipped with a pipeline for circulating the cold storage medium and a pump for pumping the cold storage medium through the chamber 100a and the pipeline to enhance the cold storage medium's cooling effect on the storage compartment 100b.

[0185] Reference Figure 6 As shown, a cover plate 120 and other structures can be further provided on the cold storage heat exchanger 1330 to seal the accommodating cavity 100a so that the refrigerant in the accommodating cavity 100a can be kept at a relatively low temperature for a long time, and to facilitate the installation of the cold storage evaporator 1331 into the accommodating cavity 100a.

[0186] Optionally, in some embodiments of the present application, the cold storage evaporator 1331 is arranged in the space of the heat exchange body 1332 for accommodating the cold storage working medium. In the third working mode, the heat exchange working medium flows inside the cold storage evaporator 1331 and exchanges heat with the cold storage working medium outside the cold storage evaporator 1331 and inside the heat exchange body 1332, which is equivalent to the cold storage working medium surrounding the periphery of the heat exchange working medium in the cold storage evaporator 1331, so that the cold storage working medium is fully cooled.

[0187] exist Figure 6 In the illustrated embodiment, the cold storage evaporator 1331 provides a heat exchange channel for the heat exchange medium to pass through, and at least a portion of the cold storage evaporator 1331 is disposed within the accommodating chamber 100a. That is, the channel walls forming the heat exchange channel on the cold storage heat exchanger 1330 are at least partially located within the accommodating chamber 100a. During the passage of the heat exchange medium through the heat exchange channel, the cold storage medium is located outside the channel walls of the heat exchange channel. In other words, at least a portion of the cold storage heat exchanger 1330 is immersed in the cold storage medium within the accommodating chambers 100a-130a. This allows the heat exchange medium to transfer heat to the cold storage medium through the channel walls of the heat exchange channel, thereby achieving cooling of the cold storage medium.

[0188] In some embodiments, the vehicle thermal management system 1000 further includes: a temperature sensor 1500 and a controller.

[0189] Temperature sensor 1500 is used to detect the temperature of the cold storage medium. For example, it can be mounted on the aforementioned heat exchange body 1332 to detect the temperature of the cold storage medium. As a specific embodiment, at least a portion of temperature sensor 1500 can be located within the accommodating chamber 100a to detect the temperature of the cold storage medium within the accommodating chamber 100a.

[0190] The controller is electrically connected to the temperature sensor 1500, enabling the controller to obtain information about the temperature of the cold storage medium detected by the temperature sensor 1500, thereby controlling the cooling mode of the vehicle thermal management system 1000 based on the temperature of the cold storage medium. In the second cooling mode, the vehicle refrigerator 100 is cooled by the cold storage medium, and accordingly, the cold storage medium will heat up. As a specific example, after the temperature of the cold storage medium exceeds a certain value (for example, 5°C), the cold storage medium's cooling effect on the vehicle refrigerator 100 is limited. At this point, the controller can be used to control the vehicle thermal management system 1000 to switch to the first cooling mode, where the vehicle refrigerator 100 is cooled using the heat exchange medium.

[0191] In some usage scenarios, the temperature of the cold storage medium will increase due to cooling the storage chamber 100b. When its temperature rises to a certain value, its cooling effect on the storage chamber 100b will weaken. At this time, it is possible to switch to using a heat exchange medium to cool the storage chamber 100b, or when there is no cooling demand in the cabin, the heat exchange medium can be further used to cool the cold storage medium.

[0192] In some embodiments, the vehicle thermal management system 1000 further includes: an air conditioner temperature and pressure sensor 1230 and a refrigerator temperature and pressure sensor 1340 .

[0193] The air conditioning temperature and pressure sensor 1230 is provided on the air conditioning branch 1200 and is used to detect the temperature and pressure of the heat exchange medium flowing from the air conditioning evaporator 1210 to the compressor 1100;

[0194] The refrigerator temperature and pressure sensor 1340 is arranged on the refrigerator branch 1300, for example, it can be integrated into the vehicle refrigerator 100, and is used to detect the temperature and pressure of the heat exchange medium flowing from the refrigerator evaporator 1310 to the compressor 1100; wherein, the air conditioner temperature and pressure sensor 1230 and the refrigerator temperature and pressure sensor 1340 are respectively electrically connected to the sensors.

[0195] The air conditioner temperature and pressure sensor 1230 and the refrigerator temperature and pressure sensor 1340 are adapted to respectively output electrical signals containing parameter information of the heat exchange medium in the air conditioner branch 1200 and the refrigerator branch 1300 to the controller, thereby enabling the controller to understand the actual cooling conditions of the vehicle cabin and the onboard refrigerator 100 and to promptly adjust the cooling effect on the vehicle cabin and the onboard refrigerator 100. For example, the controller can electrically connect to the first regulating valve 1320 and the second regulating valve 1220 to control the opening of the first regulating valve 1320 and the second regulating valve 1220 to adjust the cooling effect of the onboard thermal management system 1000.

[0196] Air conditioner temperature and pressure sensor 1230 and refrigerator temperature and pressure sensor 1340 can be configured as electronic sensors. Specifically, air conditioner temperature and pressure sensor 1230 can be a single sensor or a combination of multiple sensors to detect the temperature and pressure of the heat exchange medium in air conditioner branch 1200. Correspondingly, refrigerator temperature and pressure sensor 1340 can be a single sensor or a combination of multiple sensors to detect the temperature and pressure of the heat exchange medium in refrigerator branch 1300.

[0197] In some embodiments, the vehicle thermal management system 1000 further includes: an output control valve 1700 .

[0198] The output control valve 1700 is provided between the compressor 1100 and the refrigerator branch 1300, and can be integrated into the vehicle refrigerator 100, for example, to control the flow of the heat exchange medium from the compressor 1100 to the refrigerator evaporator 1310;

[0199] Among them, the output control valve 1700 has a first output state and a second output state; in the first output state, the output control valve 1700 connects the compressor 1100 and the refrigerator evaporator 1310; in the second output state, the output control valve 1700 disconnects the connection between the compressor 1100 and the refrigerator evaporator 1310.

[0200] In a specific solution, the output control valve 1700 can be electrically connected to the aforementioned controller, for example, to switch the output state under the control of the controller.

[0201] By configuring a cold storage medium and a heat exchange medium, the heat exchange medium can be used to cool the vehicle cabin to achieve the refrigeration function of the vehicle air conditioner. In some scenarios, the heat exchange medium can also be used to cool the storage compartment 100b, for example, to achieve the refrigeration of the vehicle refrigerator 100. The cold storage medium can also independently cool the storage compartment 100b. When the refrigeration requirements of the vehicle cabin and the storage compartment 100b differ significantly, the refrigeration requirements of both can be met separately. In addition, the present application is also provided with an output control valve 1700, which determines whether to use the heat exchange medium to cool the cold storage medium by adjusting the flow direction of the heat exchange medium, so as to ensure that the heat exchange medium can independently cool the storage compartment 100b in some usage scenarios. In usage scenarios where the refrigeration requirements differ significantly, such as the vehicle air conditioner and the vehicle refrigerator 100, this refrigeration method can fully utilize the refrigeration capacity of the heat exchange medium and meet different usage requirements.

[0202] Reference Figure 1As shown, the output control valve 1700 can also be connected between the compressor 1100 and the air-conditioning evaporator 1210; in the first output state, the output control valve 1700 connects the compressor 1100 and the air-conditioning evaporator 1210 to realize the flow of heat exchange medium from the compressor 1100 to the refrigerator evaporator 1310 and the air-conditioning evaporator 1210 in the first refrigeration mode.

[0203] In some embodiments, in the second output state, the output control valve 1700 connects the compressor 1100 and the air-conditioning evaporator 1210 to enable the heat exchange medium to flow to the air-conditioning evaporator 1210 in the second cooling mode, or when there is no cooling demand in the refrigerator and the cabin.

[0204] In some embodiments, output control valve 1700 further has a third output state. In the third output state, output control valve 1700 connects compressor 1100 and refrigerator evaporator 1310, and disconnects compressor 1100 and air conditioner evaporator 1210, thereby allowing the heat exchange medium to flow to refrigerator branch 1300 and cool the cold storage medium in the third cooling mode.

[0205] In some embodiments, the vehicle thermal management system 1000 further includes a reflux control valve 1800 .

[0206] The reflux control valve 1800 is disposed between the working medium inlet of the compressor 1100 and the refrigerator branch 1300 and is used to control the flow of the heat exchange medium back from the refrigerator evaporator 1310 to the compressor 1100. The reflux control valve 1800 has a first reflux state and a second reflux state. In the first reflux state, the reflux control valve 1800 connects the compressor 1100 and the refrigerator evaporator 1310; in the second reflux state, the reflux control valve 1800 disconnects the compressor 1100 and the refrigerator evaporator 1310. By providing the reflux control valve 1800, the flow of the heat exchange medium back from the refrigerator evaporator 1310 to the compressor 1100 can be controlled, thereby circulating the heat exchange medium.

[0207] In some embodiments, the reflux control valve 1800 is also connected between the compressor 1100 and the air-conditioning evaporator 1210. In the second reflux state, the reflux control valve 1800 connects the compressor 1100 and the air-conditioning evaporator 1210 to allow the heat exchange medium to flow back from the air-conditioning evaporator 1210 to the compressor 1100, so that the heat exchange medium can flow back from the air-conditioning evaporator 1210 to the compressor 1100 in the first heat exchange mode, so that the heat exchange medium can circulate.

[0208] In some embodiments, in the first reflux state, the reflux control valve 1800 connects the compressor 1100 and the air-conditioning evaporator 1210 , so that the heat exchange medium can flow back to the compressor 1100 when cooling the cabin, and prevents the heat exchange medium from flowing back from the reflux control valve 1800 to the refrigerator branch 1300 .

[0209] In some embodiments, the reflux control valve 1800 also has a third reflux state; in the third reflux state, the reflux control valve 1800 connects the compressor 1100 and the refrigerator evaporator 1310, and the reflux control valve 1800 disconnects the connection between the compressor 1100 and the air-conditioning evaporator 1210. When the cold storage medium is cooled, the heat exchange medium can flow back to the compressor 1100, and the heat exchange medium is prevented from flowing back from the reflux control valve 1800 to the air-conditioning branch 1200.

[0210] Reference Figure 1 As shown, in some embodiments, the vehicle thermal management system 1000 further includes: a condensing temperature and pressure sensor 1600 .

[0211] Among them, the condensing temperature and pressure sensor 1600 is arranged between the compressor 1100 and the condenser 1400. More specifically, the condensing temperature and pressure sensor 1600 can be arranged between the working fluid outlet of the compressor 1100 and the condenser 1400, and is used to detect the temperature and pressure of the heat exchange working fluid flowing from the compressor 1100 to the condenser 1400.

[0212] As an example of some specific structures of the vehicle refrigerator 100, refer to Figure 5 and Figure 6 As shown, the storage chamber 100b is configured as a storage chamber 100b in the vehicle refrigerator 100 for storing items to be frozen or refrigerated, that is, the cold storage medium and the heat exchange medium can be used to cool the items stored in the storage chamber 100b.

[0213] In some embodiments, reference Figure 6 As shown, the vehicle refrigerator 100 is further provided with: an enclosure 130. The enclosure 130 is provided on the periphery of the storage chamber 100b, and forms a heat exchange with the heat exchange medium through the refrigerator evaporator 1310. Specifically, the vehicle refrigerator 100 includes a main body 180, and the main body 180 forms the storage chamber 100b. In actual application, the main body 180 can be the shell of the vehicle refrigerator 100 for forming the storage chamber 100b. The coil 110 serving as the refrigerator evaporator 1310 is fixed on the enclosure 130, and the enclosure 130 is wrapped around the periphery of the main body 180 and in contact with the main body 180. Therefore, when the heat exchange medium passes through the coil 110, the coil 110 and the enclosure 130 exchange heat, so as to utilize the enclosure 130 to cool the main body 180, thereby realizing refrigeration of the storage chamber 100b.

[0214] In some embodiments, reference Figure 6 As shown, the vehicle refrigerator 100 is also equipped with a fan 140. The fan 140 is connected to the body 180 to exchange heat with the storage compartment 100b. The fan 140 can be mounted directly on the body 180 or fixed to the body 180 via a sheet metal member. During operation, the fan 140 can be positioned between the body 180 and the cold storage heat exchanger 1330 to enhance convective heat exchange between the cold storage medium, the heat exchange medium, and the cold storage heat exchanger 1330, thereby cooling the storage compartment 100b.

[0215] Of course, based on actual use requirements, the vehicle refrigerator 100 can be further configured with more components. Figure 5 and Figure 6 As shown, the vehicle refrigerator 100 includes: a heat insulation member 150 , a sliding base 160 , and a storage temperature sensor 170 .

[0216] Among them, the thermal insulation component 150 is arranged on the periphery of the main body 180, the cold storage heat exchanger 1330, and the refrigerator evaporator 1310 to isolate these components from the external environment, reduce the heat transfer between the cold storage medium and the heat exchange medium and the external environment, and ensure the cooling effect of the storage chamber 100b.

[0217] The main body 180 is slidably disposed on the sliding base 160 so that the main body 180 can move. This solution makes it convenient for the user to take out items in the storage chamber 100b.

[0218] The storage chamber 100b temperature sensor 1500 is provided on the vehicle refrigerator 100 and at least partially extends into the storage chamber 100b for detecting the temperature in the storage chamber 100b.

[0219] According to the second aspect of the present application, a control method for a vehicle thermal management system 1000 is also provided, wherein the vehicle thermal management system 1000 includes: a compressor 1100, an air conditioning branch 1200 and a refrigerator branch 1300, a temperature sensor 1500 and an output control valve 1700.

[0220] The refrigerator branch 1300 includes a refrigerator evaporator 1310 , a first regulating valve 1320 , and a cold storage heat exchanger 1330 .

[0221] The refrigerator evaporator 1310 is connected to the compressor 1100 ; the first regulating valve 1320 is connected between the compressor 1100 and the refrigerator evaporator 1310 ; the cold storage heat exchanger 1330 is used to enable the cold storage medium to form heat exchange with the vehicle refrigerator 100 .

[0222] The cold storage heat exchanger 1330 includes a cold storage evaporator 1331 . The cold storage evaporator 1331 is connected to the compressor 1100 .

[0223] The air conditioning branch circuit 1200 includes an air conditioning evaporator 1210 and a second regulating valve 1220 .

[0224] The air-conditioning evaporator 1210 is connected to the compressor 1100 ; the second regulating valve 1220 is connected between the compressor 1100 and the air-conditioning evaporator 1210 .

[0225] The temperature sensor 1500 is used to detect the temperature of the cold storage medium.

[0226] The output control valve 1700 is provided between the compressor 1100 and the refrigerator branch 1300 , and is used to control the on-off flow of the heat exchange medium from the compressor 1100 to the refrigerator evaporator 1310 .

[0227] The output control valve 1700 is also connected between the compressor 1100 and the air conditioner evaporator 1210 .

[0228] The vehicle-mounted thermal management system 1000 has a first cooling mode; in the first cooling mode, the compressor 1100 is connected to the air-conditioning branch 1200 to cool the vehicle cabin, and the compressor 1100 is connected to the refrigerator branch 1300 to cool the vehicle-mounted refrigerator 100, and the evaporation pressure of the heat exchange medium in the air-conditioning evaporator 1210 is the same as the evaporation pressure of the heat exchange medium in the refrigerator evaporator 1310.

[0229] The vehicle-mounted thermal management system 1000 further has a second cooling mode; in the second cooling mode, the refrigerator branch 1300 cools the vehicle-mounted refrigerator 100 through the cold storage medium.

[0230] The vehicle thermal management system 1000 also has a third cooling mode; in the third cooling mode, the compressor 1100 is connected to the cold storage evaporator 1331 so that the heat exchange medium is suitable for cooling the cold storage medium through the cold storage evaporator 1331.

[0231] The connection relationship between the structures of the vehicle thermal management system 1000 is described above and will not be repeated here.

[0232] As a specific solution, the control method of the vehicle thermal management system is used, for example, to control the flow direction of the working medium used for heat exchange in the vehicle thermal management system, for example, to control the flow direction of the heat exchange working medium in the vehicle thermal management system, so as to at least partially solve the defects of the related technology pointed out in the above background technology part.

[0233] Reference Figure 7 As shown, the control method includes:

[0234] S110 : When a first preset condition is met, control the vehicle thermal management system to be in a first cooling mode.

[0235] It can be understood that based on the previous description of the vehicle thermal management system 1000, this control method can achieve matching of the cooling capacity of the heat exchange medium in the air-conditioning branch and the refrigerator branch, so that the heat exchange medium can cool the vehicle cabin and the vehicle refrigerator under normal circulation.

[0236] In some embodiments, step S110 includes:

[0237] S111. In the first cooling mode, adjust the opening of the first regulating valve to control the evaporation pressure of the heat exchange medium flowing into the air conditioner evaporator; and / or adjust the opening of the second regulating valve to control the evaporation pressure of the heat exchange medium in the refrigerator evaporator.

[0238] In some embodiments, the control method further includes:

[0239] S120 : When a second preset condition is met, control the vehicle thermal management system to be in a second cooling mode.

[0240] In some embodiments, in the second cooling mode, the compressor is disconnected from the refrigerator evaporator.

[0241] In some embodiments, the control method further includes:

[0242] S130: When a third preset condition is met, control the vehicle thermal management system to be in a third cooling mode.

[0243] In some embodiments, in the third cooling mode, the compressor is disconnected from the air-conditioning branch to prevent the heat exchange medium from being output from the compressor to the air-conditioning evaporator.

[0244] In some embodiments, the first preset condition includes:

[0245] The vehicle cabin needs to be cooled, and the temperature of the cooling medium is greater than or equal to the preset temperature threshold;

[0246] And / or, the second preset condition includes:

[0247] The temperature of the cold storage medium is lower than the preset temperature threshold;

[0248] And / or, the third precondition includes:

[0249] There is no cooling demand for the vehicle cabin, and the temperature of the cold storage medium is greater than or equal to the preset temperature threshold.

[0250] In some embodiments, step S110 further includes:

[0251] S112, controlling the output control valve to connect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

[0252] In some embodiments, step S120 includes:

[0253] S121. Control the output control valve to disconnect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

[0254] In some embodiments, step S120 further includes:

[0255] S122, controlling the output control valve to connect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

[0256] In some embodiments, step S130 includes:

[0257] S131. Control the output control valve to disconnect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

[0258] In some embodiments, step S130 further includes:

[0259] S132, controlling the output control valve to connect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

[0260] According to the third aspect of the present application, a control method for a vehicle-mounted thermal management system is also provided. The control method is suitable for controlling the operation of the vehicle-mounted thermal management system through a processor such as a vehicle-mounted controller, that is, the execution subject of the control method can be a processor such as a vehicle-mounted controller.

[0261] For specific plans, refer to Figure 8 As shown, the control method includes:

[0262] S210: Control the evaporation pressure of the heat exchange medium in the air conditioner evaporator and the refrigerator evaporator according to the cooling demand of the vehicle cabin.

[0263] In some embodiments, the control method further includes:

[0264] S220: When the first execution condition is met, output a control signal to allow the heat exchange medium of the vehicle thermal management system to enter the air conditioner evaporator and the refrigerator evaporator.

[0265] Herein, step S220 may be performed after step S210.

[0266] In some embodiments, the control method further includes:

[0267] S230, determining a cooling mode of the vehicle thermal management system according to the vehicle status information;

[0268] Among them, the cooling mode includes a dual-opening mode. In the dual-opening mode, the air-conditioning evaporator and the refrigerator evaporator of the vehicle's thermal management system are in operation.

[0269] Based on the above description of the vehicle thermal management system, the dual-opening mode may correspond to the first cooling mode mentioned above.

[0270] Correspondingly, the cooling mode may also include: single air-conditioning mode, single refrigerator mode, and cold storage mode.

[0271] Among them, in the single air-conditioning mode, the heat exchange medium of the vehicle thermal management system flows from the compressor to the air-conditioning evaporator, and the compressor and the refrigerator evaporator are disconnected, so that the vehicle cabin is cooled but the refrigerator is not cooled.

[0272] In the single refrigerator mode, the compressor is disconnected from the refrigerator evaporator, and the compressor is disconnected from the air conditioner evaporator. The refrigerator is cooled by the cold storage medium, which corresponds to the second refrigeration mode mentioned above.

[0273] In the cold storage mode, the heat exchange medium of the vehicle thermal management system and the cold storage medium form a heat exchange, and the air conditioner evaporator is shut down, which corresponds to the third cooling mode mentioned above.

[0274] Step S210 may be executed after step S230 determines that the cooling mode of the vehicle thermal management system is the dual-opening mode. In some embodiments, the first execution condition includes:

[0275] The vehicle thermal management system is in dual-on mode, and the temperature of the cold storage medium of the vehicle thermal management system is greater than or equal to the preset temperature threshold.

[0276] In some embodiments, the control method further includes:

[0277] S240: When the second execution condition is met, output a control signal to prevent the heat exchange medium of the vehicle thermal management system from entering the refrigerator evaporator.

[0278] In some embodiments, the second execution condition includes:

[0279] The temperature of the cold storage medium of the vehicle thermal management system is lower than a preset temperature threshold.

[0280] In some embodiments, the control method further includes:

[0281] S250: When a third preset condition is met, control the temperature of the cold storage medium according to the temperature difference between the cold storage medium and the heat exchange medium of the vehicle thermal management system.

[0282] In some embodiments, the third execution condition includes:

[0283] The vehicle thermal management system is in the cold storage mode, and the temperature of the cold storage medium of the vehicle thermal management system is greater than or equal to the preset temperature threshold.

[0284] As a specific example, the preset temperature threshold is, for example, 0°C.

[0285] In some embodiments, the vehicle status information includes at least one of user setting information for the vehicle thermal management system, vehicle occupant information, and status information of the vehicle refrigerator.

[0286] In some embodiments, step S230 includes:

[0287] S231. Calculate the cooling demand of the vehicle refrigerator and / or the cooling demand of the vehicle air conditioner based on the vehicle status information, and determine the corresponding cooling mode based on the cooling demand of the vehicle refrigerator and / or the cooling demand of the vehicle air conditioner.

[0288] The following describes a specific implementation scheme for the heat exchange method or vehicle thermal management system control method provided above, when actually applied to a vehicle thermal management system, in order to clearly illustrate the inventive concept of this application. The heat exchange medium is hereinafter referred to as a refrigerant, and the cold storage medium is hereinafter referred to as a coolant.

[0289] For specific applications, refer to Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 As shown, various human-machine interaction devices, sensors, and other components integrated into the vehicle can obtain information set by passengers in the vehicle, such as whether the cabin cooling is activated, the required cabin cooling temperature, and the refrigerant temperature. Based on this information, the thermal management requirements of the cabin and the onboard refrigerator are determined. Based on the thermal management requirements of the cabin and onboard refrigerator 100, the cooling mode of the onboard thermal management system is controlled, such as refrigerator-only cooling, air conditioning-only cooling, or refrigerator-air conditioning dual cooling.

[0290] It is also possible to obtain status information of the vehicle cabin and the vehicle refrigerator 100, such as the temperature inside the vehicle cabin and the temperature inside the refrigerator storage compartment, and calculate the cooling demand level of the air conditioner and refrigerator based on the thermal management requirements of the vehicle cabin and the vehicle refrigerator, as well as the status information of the vehicle cabin and the vehicle refrigerator.

[0291] The process for calculating the cooling demand levels for air conditioners and refrigerators is as follows:

[0292] 1. First, obtain the following setting information and status information: actual cabin temperature T car and cabin target temperature T car_target , the actual temperature of the refrigerator is T in and refrigerator target temperature T in_targ et, actual temperature of coolant T store etc., cabin temperature deviation ΔT car = Actual cabin temperature T car - Cabin target temperature Tcar_target ; Refrigerator temperature deviation ΔTin = refrigerator actual temperature Tin - refrigerator target temperature T in_target ;

[0293] 2. If ΔT car =ΔT in =0, and T store <-10℃ is considered as no demand; ΔT car >ΔT in =0, it is determined to be a single air conditioning demand; ΔT car =ΔT in =0, and T store >-10℃ is determined as the refrigerator's cooling demand; ΔT in >ΔT car =0, it is determined as a single refrigerator demand; ΔT car >0, ΔT in >0, it is determined that the refrigerator and air conditioner need to be turned on at the same time.

[0294] In actual applications, refrigerator refrigeration and air conditioning refrigeration generally have different requirements: air conditioning refrigeration requires a large refrigerant flow rate and high evaporation pressure, and the overall cooling capacity required is relatively large; refrigerator refrigeration requires a large refrigerant flow rate and low evaporation pressure, and the overall cooling capacity required is relatively small. When the air conditioning and refrigerator are both used in electric vehicles, it is necessary to reasonably allocate the refrigerant flow rate and evaporation temperature on the air conditioning and refrigerator sides. The specific method is as follows:

[0295] The compressor's start / stop and speed are controlled based on the cooling demand levels for the air conditioner and refrigerator. The compressor shuts down when there's no demand for either the refrigerator or the air conditioner. In both air conditioning-only and refrigerator / air conditioner dual-operation modes, the compressor speed is controlled based on the cabin temperature deviation ΔTcar, prioritizing air conditioning demand. In refrigerator-only and refrigerator cold storage modes, the compressor speed is controlled based on the refrigerator temperature deviation ΔTin, prioritizing refrigerator demand. Control is considered stable when the hysteresis is within a certain range (e.g., ±2°C).

[0296] More specifically, during the cooling process in refrigerators and air conditioners, the refrigerant passes through the throttling valve and transforms into a low-temperature, low-pressure gas-liquid mixture. This low-temperature refrigerant then enters the heat exchanger and evaporator, where the heat exchanger acts as the evaporator, absorbing heat from the refrigerator and the vehicle cabin. The liquid refrigerant absorbs heat and transforms into a gaseous refrigerant. Since only the phase change occurs, the refrigerant temperature remains unchanged. Due to the refrigerant's physical properties, the refrigerant temperature at this point, t1, is coupled to its pressure, p. t1 is the saturated evaporation temperature at evaporation pressure p. Once all the liquid refrigerant has been converted to gaseous refrigerant, the second stage begins. The gaseous refrigerant absorbs heat by increasing its own temperature, reaching a temperature of t2. t2 is greater than t1, and the difference between t2 and t1 is called the superheat.

[0297] The refrigerant pressure p remains constant during the two processes described above. Due to the coupling relationship, the saturated evaporation temperature t1 can be directly calculated from the measured refrigerant pressure p. Pressure and temperature sensors (i.e., the refrigerator temperature and pressure sensor and air conditioner temperature and pressure sensor mentioned above) are installed at the outlet of the vehicle refrigerator and evaporator, respectively. The evaporation pressure p and actual evaporation temperature t2 are measured and measured. The saturated evaporation temperature t1 is then obtained from the table based on the coupling relationship. This allows the actual superheat of the refrigerant at the outlet of the vehicle refrigerator and air conditioner evaporators to be determined. Based on the heat exchange process described above, the superheat reflects whether the refrigerant flow rate meets the heat exchange requirements. For example, if the measured superheat is too high, it can be understood that too little refrigerant is being exchanged, and the refrigerant must rely more on its own temperature rise to cool the refrigerator and air conditioner. Increasing the refrigerant flow rate will allow more refrigerant to participate in the heat exchange process, removing more heat from the first heat exchange process and eliminating the need for the refrigerant to heat up too high.

[0298] As described above, the first and second expansion valves perform hysteresis control based on the difference between the actual superheat at the outlet of the vehicle refrigerator and air conditioner, respectively, and the target superheat. For example, if the target superheat is 5°C and the actual superheat is 10°C higher than the target, increasing the opening of the corresponding expansion valve and the refrigerant flow will gradually reduce the superheat to the target value of 5°C. The process of obtaining the actual superheat through pressure and temperature sensors is as follows: the actual pressure and temperature values are measured by the pressure and temperature sensors, and the saturation temperature is calculated from the actual pressure value. The actual superheat is obtained by subtracting the saturation temperature value from the actual temperature.

[0299] The first and second expansion valves are electronic expansion valves. Their valve openings are controlled based on the target superheat of the refrigerant at the outlet of the vehicle refrigerator and air conditioner. For different demand levels, set different target superheats according to the table below to adjust flow distribution.

[0300] Specifically, when there is no cooling demand, the target superheat degrees at the refrigerator and air conditioner outlets are both less than 0, and at this time, the first expansion valve and the second expansion valve are fully open.

[0301] When only air conditioning is required, the target superheat of the refrigerator outlet PT is less than 0, the first expansion valve is closed, the refrigerant does not cool the vehicle air conditioner, and the target superheat of the air conditioner outlet is 5°C.

[0302] When the refrigerator needs to store cold or a single refrigerator is needed, the target superheat of the air-conditioning outlet PT is less than 0, the first expansion valve is closed, the cabin is not cooled, and the target superheat of the refrigerator outlet is 5°C.

[0303] When the refrigerator and air conditioner are both turned on, the refrigerator refrigerant temperature T is further determined. store , if T store <0, the refrigerant can provide cooling capacity for the items in the refrigerator (i.e., the storage room) without opening the refrigerator refrigerant flow path, the refrigerator outlet target superheat is <0, the first expansion valve is closed, the flow path is stopped and no cooling is performed, and the air conditioner outlet target superheat is 5°C; if T store If the temperature is ≥ 0, the refrigerant can no longer cool the items in the refrigerator. At this point, the refrigerator refrigerant flow path needs to be opened. However, the refrigerant flow path is only used to maintain the refrigerator's refrigerated temperature. Therefore, the target superheats at the refrigerator and air conditioner outlets are set at 15°C and 5°C, respectively. The refrigerator target superheat setting is too high, so the opening of the refrigerator's electronic expansion valve is lowered, reducing the refrigerant flow rate on the refrigerator side. By adjusting the two expansion valves, and thus the flow distribution ratio between the refrigerator and air conditioner, this setting can better match the cooling capacity distribution with the demand level, balancing efficiency and maximum cooling capacity.

[0304] The evaporation pressure of the refrigerant in a vehicle's thermal management system affects cooling speed, energy consumption, and other factors. If the pressure is too low, it can cause problems such as frost on the heat exchanger. When both the air conditioning and refrigerator flow paths are connected, the pressure in the air conditioner evaporator is equal to the evaporation pressure in the refrigerator. Due to the coupling between pressure and temperature, the evaporation temperature is also equal. Due to the coupling between pressure and temperature, for example, when the minimum evaporation pressure is set at 160 kPa, the evaporation temperature decreases as the evaporator pressure decreases, accelerating the cooling of items in the refrigerator. However, the lower the evaporation pressure, the greater the overall energy consumption of the refrigeration system. Furthermore, when the air conditioner's evaporation pressure is below 300 kPa, the evaporation temperature drops below 0°C, risking frost and failure of the air conditioner evaporator.

[0305] As the control target, the minimum evaporation pressure target value is set. When there is no demand, the refrigeration system does not operate and there is no minimum evaporation pressure. When there is demand for air conditioning alone and dual operation of the refrigerator and air conditioner, the evaporation pressure at the air conditioner and refrigerator evaporators is maintained at, for example, 300 kPa. When there is demand for refrigerator alone or refrigerator energy storage (i.e., refrigerant cooling the refrigerant), the evaporation pressure is maintained at 160 kPa. The control basis is the minimum evaporation pressure target value at the refrigerator and air conditioner outlets. Hysteresis control is performed based on the difference between the actual pressure at the refrigerator outlet and the minimum evaporation pressure target value. The strategy in this case is to automatically adjust the compressor speed based on the difference between the actual pressure at the refrigerator outlet and the minimum evaporation pressure target value (e.g., the saturation pressure corresponding to 0°C). For example, if the actual pressure is lower than the minimum evaporation pressure target value, the compressor speed is reduced to increase the actual evaporator pressure, thereby increasing the evaporator temperature.

[0306] The fan on the vehicle refrigerator (the fan mentioned above) can also be determined based on the cooling demand level of the air conditioner and refrigerator. For example, when there is no cooling demand for the air conditioner or refrigerator, only the air conditioner needs to cool, or the refrigerator needs to store energy, the fan target speed is zero. When there is a cooling demand for the refrigerator alone or a dual-operation demand for the refrigerator and air conditioner, hysteresis control is performed based on the difference between the actual temperature of the items in the box and the target temperature in the box (for example, 5°C). For example, when the actual temperature of the items in the box is more than 15°C higher than the target temperature, the fan speed is set to the maximum speed to increase the convective heat exchange rate between the refrigerator evaporator and the items in the box. To increase the cooling capacity, especially when the refrigerator and air conditioner need to be turned on and Tstore ≥ 0, the fan can force convective heat exchange between the refrigerator evaporator and the items in the box, increasing the heat transfer coefficient. Even when the temperature difference between the evaporation temperature and the temperature in the box is small, the cooling speed can be increased.

[0307] Of course, the above only emphasizes the conditions under cooling demand. If the cabin has a heating demand, the parameters such as the evaporation temperature of the air-conditioning evaporator may differ from the description of this application. However, this does not mean that the solution recorded in this application cannot be implemented in actual application. That is, this application does not consider the changes in the evaporation temperature when the cabin is heated, and will not go into details here.

[0308] According to the fourth aspect of the present application, an embodiment of the present application also provides a computer program product, including a computer program. When the computer program is executed by a processor, it implements the control method of the above-mentioned vehicle thermal management system and has all the beneficial effects of the above-mentioned control method. This application will not go into details here.

[0309] According to a fifth aspect of the present application, an embodiment of the present application further provides an electronic device comprising: a memory and a processor, wherein the memory stores a computer program; the processor is configured to execute the computer program in the memory to implement the steps of the above-described vehicle thermal management system control method. This electronic device has all the beneficial effects of the above-described vehicle control method, and this application will not further elaborate on them.

[0310] Please refer to Figure 17 , the electronic device 600 may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage device 608 into a random access memory (RAM) 603. Various programs and data required for the operation of the electronic device 600 are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0311] Typically, the following devices may be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 609. The communication device 609 may allow the electronic device 600 to communicate with other devices wirelessly or by wire to exchange data. Although Figure 17 The electronic device 600 is shown with various devices, but it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed instead. Figure 17 Each block shown in the figure may represent one device, or may represent multiple devices as needed.

[0312] In particular, according to some embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, some embodiments of the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In some such embodiments, the computer program can be downloaded and installed from a network via the communication device 609, or installed from the storage device 608, or installed from the ROM 602. When the computer program is executed by the processing device 601, the above-mentioned functions defined in the method of some embodiments of the present application are performed.

[0313] It should be noted that the computer-readable medium in some embodiments of the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof, and the present application does not specifically limit this. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0314] In some embodiments of the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In some embodiments of the present application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0315] In some embodiments, the client and server can communicate using any currently known or future developed network protocol, such as HTTP (Hypertext Transfer Protocol), and can be interconnected with any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include local area networks (LANs), wide area networks (WANs), internets (e.g., the Internet), and peer-to-peer networks (e.g., adhoc peer-to-peer networks), as well as any currently known or future developed networks.

[0316] The computer-readable medium may be included in the electronic device or may exist independently, not incorporated into the electronic device. The computer-readable medium carries one or more programs that, when executed by the electronic device, cause the electronic device to generate or output control instructions for controlling preset vehicle functions based on a control strategy output by a cloud-based control strategy model.

[0317] Computer program code for performing the operations of some embodiments of the present application can be written in one or more programming languages or a combination thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional procedural programming languages such as "C" or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, through the Internet using an Internet service provider).

[0318] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of the systems, methods, and computer program products according to various embodiments of the present application. In this regard, each box in the flowchart or block diagram may represent a module, program segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function.

[0319] It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures.

[0320] For example, two blocks shown in succession may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functionality involved. It should also be noted that each block in the block diagrams and / or flow charts, and combinations of blocks in the block diagrams and / or flow charts, may be implemented using a dedicated hardware-based system that performs the specified functions or operations, or may be implemented using a combination of dedicated hardware and computer instructions.

[0321] The units described in some embodiments of the present application may be implemented by software or hardware.

[0322] The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, and without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chip (SOCs), complex programmable logic devices (CPLDs), and the like.

[0323] Reference Figure 18 As shown, according to the sixth aspect of the present application, a vehicle 10 is also provided, which includes the above-mentioned vehicle refrigerator 100 or vehicle thermal management system 1000. The vehicle 10 has all the beneficial effects of the above-mentioned vehicle refrigerator 100 or vehicle thermal management system 1000, and this application will not go into details here.

[0324] The vehicle 10 may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and this application does not make any specific limitation thereto.

[0325] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0326] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0327] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0328] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A vehicle thermal management system, characterized in that: include: compressor; an air conditioning branch having an air conditioning evaporator connected to the compressor; a refrigerator branch having a refrigerator evaporator connected to the compressor; In which, the vehicle-mounted thermal management system has at least a first cooling mode; in the first cooling mode, the air-conditioning evaporator is connected to the compressor to cool the vehicle cabin, and the refrigerator evaporator is connected to the compressor to cool the vehicle-mounted refrigerator, and the evaporation pressure of the heat exchange medium in the air-conditioning evaporator is equal to the evaporation pressure of the heat exchange medium in the refrigerator evaporator.

2. The vehicle thermal management system according to claim 1, characterized in that: The refrigerator branch circuit also has: The first regulating valve is connected between the compressor and the refrigerator evaporator and is used to adjust the evaporation pressure of the heat exchange medium in the refrigerator evaporator.

3. The vehicle thermal management system according to claim 1, characterized in that: The air conditioning branch further comprises: The second regulating valve is connected between the compressor and the air-conditioning evaporator, and is used to adjust the evaporation pressure of the heat exchange medium in the air-conditioning evaporator.

4. The vehicle thermal management system according to claim 1, characterized in that: The refrigerator branch circuit also has: The cold storage heat exchanger is used to exchange heat between the cold storage medium and the vehicle refrigerator; The vehicle-mounted thermal management system further has a second cooling mode; in the second cooling mode, the refrigerator branch cools the vehicle-mounted refrigerator through the cold storage medium.

5. The vehicle thermal management system according to claim 4, characterized in that: In the second cooling mode, the compressor is disconnected from the refrigerator evaporator.

6. The vehicle thermal management system according to claim 4, characterized in that: The cold storage heat exchanger comprises: a cold storage evaporator connected to the compressor; The vehicle thermal management system also has a third cooling mode; in the third cooling mode, the compressor is connected to the cold storage evaporator so that the heat exchange medium is suitable for cooling the cold storage medium through the cold storage evaporator.

7. The vehicle thermal management system according to claim 6, characterized in that: In the third cooling mode, the compressor is disconnected from the air-conditioning branch circuit to prevent the heat exchange medium from being output from the compressor to the air-conditioning evaporator.

8. The vehicle thermal management system according to claim 6, characterized in that: The cold storage evaporator is connected between the refrigerator evaporator and the working medium inlet of the compressor; Wherein, in the first refrigeration mode, the heat exchange medium flows from the refrigerator evaporator to the cold storage evaporator.

9. The vehicle thermal management system according to claim 6, characterized in that: The cold storage heat exchanger further comprises: The heat exchange body is formed with a space for accommodating the cold storage medium; Wherein, in the second refrigeration mode, the cold storage medium cools the vehicle refrigerator through the heat exchange body.

10. The vehicle thermal management system according to claim 9, characterized in that: The cold storage evaporator is arranged in the space of the heat exchange body accommodating the cold storage medium.

11. The vehicle thermal management system according to claim 4, characterized in that: Also includes: A temperature sensor, used to detect the temperature of the cold storage medium; The controller is electrically connected to the temperature sensor and is suitable for controlling the cooling mode of the vehicle thermal management system according to the temperature of the cold storage medium.

12. The vehicle thermal management system according to claim 11, characterized in that: Also includes: An air conditioning temperature and pressure sensor, provided on the air conditioning branch, for detecting the temperature and pressure of the heat exchange medium flowing from the air conditioning evaporator to the compressor; A refrigerator temperature and pressure sensor, provided on the refrigerator branch line, for detecting the temperature and pressure of the heat exchange medium flowing from the refrigerator evaporator to the compressor; Wherein, the air conditioner temperature and pressure sensor and the refrigerator temperature and pressure sensor are respectively electrically connected to the sensor.

13. The vehicle thermal management system according to any one of claims 1 to 12, characterized in that: Also includes: An output control valve is provided between the compressor and the refrigerator branch, and is used to control the flow of the heat exchange medium from the compressor to the refrigerator evaporator; Wherein, the output control valve has a first output state and a second output state; in the first output state, the output control valve connects the compressor and the refrigerator evaporator; in the second output state, the output control valve disconnects the compressor and the refrigerator evaporator.

14. The vehicle thermal management system according to claim 13, characterized in that: The output control valve is also connected between the compressor and the air-conditioning evaporator; in the first output state, the output control valve communicates with the compressor and the air-conditioning evaporator.

15. The vehicle thermal management system according to claim 14, characterized in that: In the second output state, the output control valve connects the compressor and the air conditioner evaporator.

16. The vehicle thermal management system according to claim 13, characterized in that: The output control valve also has a third output state; in the third output state, the output control valve connects the compressor and the refrigerator evaporator, and the output control valve disconnects the compressor and the air conditioner evaporator.

17. The vehicle thermal management system according to any one of claims 1 to 12, characterized in that: Also includes: A reflux control valve is provided between the working medium inlet of the compressor and the refrigerator branch, and is used to control the on-off flow of the heat exchange working medium from the refrigerator evaporator back to the compressor; In which, the reflux control valve has a first reflux state and a second reflux state; in the first reflux state, the reflux control valve connects the compressor and the refrigerator evaporator; in the second reflux state, the reflux control valve disconnects the connection between the compressor and the refrigerator evaporator.

18. The vehicle thermal management system according to claim 17, characterized in that: The reflux control valve is also connected between the compressor and the air-conditioning evaporator; in the second reflux state, the reflux control valve connects the compressor and the air-conditioning evaporator to allow the heat exchange medium to flow back from the air-conditioning evaporator to the compressor.

19. The vehicle thermal management system according to claim 18, characterized in that: In the first reflux state, the reflux control valve connects the compressor and the refrigerator evaporator.

20. The vehicle thermal management system according to claim 18, characterized in that: The reflux control valve also has a third reflux state; in the third reflux state, the reflux control valve connects the compressor and the refrigerator evaporator, and the reflux control valve disconnects the compressor and the air conditioner evaporator.

21. A control method for a vehicle thermal management system, characterized in that: The vehicle thermal management system includes: compressor; an air conditioning branch having an air conditioning evaporator connected to the compressor; a refrigerator branch having a refrigerator evaporator connected to the compressor; The vehicle thermal management system has at least a first cooling mode; in the first cooling mode, the compressor is connected to the air conditioning branch to cool the vehicle cabin, and the compressor is connected to the refrigerator branch to cool the vehicle refrigerator, and the evaporation pressure of the heat exchange medium in the air conditioning evaporator is the same as the evaporation pressure of the heat exchange medium in the refrigerator evaporator; The control method of the vehicle thermal management system includes: When a first preset condition is met, the vehicle thermal management system is controlled to be in a first cooling mode.

22. The control method of the vehicle thermal management system according to claim 21, characterized in that: The refrigerator branch circuit further comprises: a first regulating valve connected between the compressor and the refrigerator evaporator; The air conditioning branch further comprises: a second regulating valve connected between the compressor and the air conditioner evaporator; When a first preset condition is met, controlling the vehicle thermal management system to be in the first cooling mode includes: In the first cooling mode, adjusting the opening of the first regulating valve to control the evaporation pressure of the heat exchange medium flowing into the air conditioner evaporator; And / or, adjusting the opening of the second regulating valve to control the evaporation pressure of the heat exchange medium in the refrigerator evaporator.

23. The control method of the vehicle thermal management system according to claim 21, characterized in that: The refrigerator branch circuit also has: The cold storage heat exchanger is used to exchange heat between the cold storage medium and the vehicle refrigerator; The vehicle-mounted thermal management system further has a second cooling mode; in the second cooling mode, the refrigerator branch cools the vehicle-mounted refrigerator through the cold storage medium; The control method of the vehicle thermal management system further includes: When a second preset condition is met, the vehicle thermal management system is controlled to be in the second cooling mode.

24. The control method of the vehicle thermal management system according to claim 23, characterized in that: In the second cooling mode, the compressor is disconnected from the refrigerator evaporator.

25. The control method of the vehicle thermal management system according to claim 23, characterized in that: The cold storage heat exchanger comprises: a cold storage evaporator connected to the compressor; The vehicle thermal management system further has a third cooling mode; in the third cooling mode, the compressor is connected to the cold storage evaporator so that the heat exchange medium is suitable for cooling the cold storage medium through the cold storage evaporator; The control method of the vehicle thermal management system further includes: When a third preset condition is met, the vehicle thermal management system is controlled to be in the third cooling mode.

26. The control method of the vehicle thermal management system according to claim 25, characterized in that: In the third cooling mode, the compressor is disconnected from the air-conditioning branch circuit to prevent the heat exchange medium from being output from the compressor to the air-conditioning evaporator.

27. The control method of the vehicle thermal management system according to claim 25, characterized in that: The vehicle thermal management system further includes: A temperature sensor, used to detect the temperature of the cold storage medium; The first preset condition includes: The vehicle cabin has a cooling demand, and the temperature of the cold storage medium is greater than or equal to a preset temperature threshold; And / or, the second preset condition includes: The temperature of the cold storage medium is lower than a preset temperature threshold; And / or, the third preset condition includes: There is no cooling demand for the vehicle cabin, and the temperature of the cold storage medium is greater than or equal to a preset temperature threshold.

28. The control method of the vehicle thermal management system according to claim 25, characterized in that: The vehicle thermal management system further includes: An output control valve is provided between the compressor and the refrigerator branch, and is used to control the flow of the heat exchange medium from the compressor to the refrigerator evaporator; When the first preset condition is met, controlling the vehicle thermal management system to be in the first cooling mode further includes: The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

29. The control method of the vehicle thermal management system according to claim 28, characterized in that: The output control valve is also connected between the compressor and the air conditioner evaporator; When the first preset condition is met, controlling the vehicle thermal management system to be in the first cooling mode further includes: The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

30. The control method of the vehicle thermal management system according to claim 29, characterized in that: When a second preset condition is met, controlling the vehicle thermal management system to be in the second cooling mode includes: The output control valve is controlled to disconnect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

31. The control method of the vehicle thermal management system according to claim 30, characterized in that: When the second preset condition is met, controlling the vehicle thermal management system to be in the second cooling mode further includes: The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

32. The control method of the vehicle thermal management system according to claim 29, characterized in that: When a third preset condition is satisfied, controlling the vehicle thermal management system to be in the third cooling mode includes: The output control valve is controlled to disconnect the flow path of the heat exchange medium between the compressor and the air conditioner evaporator.

33. The control method of the vehicle thermal management system according to claim 32, characterized in that: When a third preset condition is satisfied, controlling the vehicle thermal management system to be in the third cooling mode further includes: The output control valve is controlled to connect the flow path of the heat exchange medium between the compressor and the refrigerator evaporator.

34. A computer program product, characterized in that The method comprises a computer program or instructions, which, when executed by a processor, implements the steps of the control method of the vehicle thermal management system according to any one of claims 21 to 33.

35. An electronic device, characterized in that: The electronic device comprises: a memory storing a computer program; A processor, configured to execute the computer program in the memory to implement the steps of the control method of the vehicle thermal management system as described in any one of claims 21 to 33.

36. A vehicle, characterized in that: The vehicle comprises: an on-vehicle thermal management system as described in any one of claims 1 to 20, or a control method for implementing the on-vehicle thermal management system as described in any one of claims 21 to 33; or a computer program product as described in claim 34; or an electronic device as described in claim 35.

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