Control method for thermal management system of vehicle, thermal management system and vehicle

Abstract

The invention discloses a control method for a heat management system of a vehicle, the heat management system and the vehicle, the heat management system comprises a refrigerator heat exchange module, and the refrigerator heat exchange module comprises a cold storage material piece. The control method comprises the following steps that refrigerator state information of a refrigerator of the vehicle and passenger compartment state information of a passenger compartment of the vehicle are obtained; according to the refrigerator state information and the passenger compartment state information, the refrigerator refrigeration requirement of the refrigerator and the passenger compartment refrigeration requirement of the passenger compartment are determined; when the refrigerator and the passenger compartment both have the refrigeration requirement, the cooling capacity information of the cold storage material piece is obtained; and according to the cooling capacity information, the working mode of the refrigerator heat exchange module is determined. According to the control method, the problem that the refrigerating capacity of the refrigerator and the refrigerating capacity of the passenger compartment under different temperature control are not matched can be solved, the refrigerating mode of the refrigerator is enriched, and the refrigerating reliability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a control method for a thermal management system of a vehicle, a thermal management system and a vehicle. Background Art

[0002] The car refrigerator is a constant temperature storage cabinet carried on the vehicle and is a new generation of refrigeration equipment popular in the international market.

[0003] In the related art, when a vehicle's onboard refrigerator is cooling, it usually exchanges heat through a refrigerant to achieve cooling. When the vehicle's air conditioning system and refrigerator system work at the same time, there is a problem of mismatch in cooling capacity under different temperature controls of the refrigerator and the air conditioning system. In addition, the refrigerator has a single cooling mode and low cooling reliability, which cannot meet customer needs, thereby reducing the user experience. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to propose a control method for a thermal management system of a vehicle, which can solve the problem of mismatch in cooling capacity under different temperature controls of a refrigerator and a passenger compartment, and enrich the refrigeration mode of the refrigerator and improve the refrigeration reliability.

[0005] Another object of the present invention is to provide a thermal management system using the above control method.

[0006] Another object of the present invention is to provide a vehicle adopting the above thermal management system.

[0007] According to a control method for a thermal management system of a vehicle in accordance with an embodiment of the first aspect of the present invention, the thermal management system includes a refrigerator heat exchange module, the refrigerator heat exchange module includes a cold storage material piece, and the control method includes the following steps: obtaining refrigerator status information of a refrigerator of the vehicle and passenger compartment status information of a passenger compartment of the vehicle; determining a refrigerator refrigeration demand of the refrigerator and a passenger compartment refrigeration demand of the passenger compartment based on the refrigerator status information and the passenger compartment status information; when both the refrigerator and the passenger compartment have refrigeration demands, obtaining cold capacity information of the cold storage material piece; and determining an operating mode of the refrigerator heat exchange module based on the cold capacity information.

[0008] According to the control method for the thermal management system of a vehicle according to an embodiment of the present invention, by setting a cold storage material piece, it is possible to solve the problem of evaporation pressure and energy mismatch between functions of different temperature control when the refrigerator heat exchange module and the air conditioning module are used at the same time. Moreover, the distribution of the refrigerant is more reasonable, which effectively ensures the cooling or heating speed of the refrigerator heat exchange module, meets the needs of users, and effectively ensures the cooling or heating capacity of the air conditioning module. In addition, by cooling the refrigerator through the cold storage material piece, the refrigerator's refrigeration mode can be enriched, and the refrigerator's refrigeration performance and use performance can be improved. The control method is simple in logic, which is conducive to the management and control of the thermal management system.

[0009] According to some embodiments of the present invention, the cooling information includes the actual temperature T of the cooling material of the cooling material piece. 1 and the refrigeration temperature T of the cold storage material 1r The step of determining the working mode of the refrigerator heat exchange module according to the cooling capacity information specifically includes: calculating the cooling temperature deviation ΔT of the cooling material of the cooling material piece. 1r , where the ΔT 1r Satisfy: ΔT 1r =T 1r -T 1 ; When ΔT 1r ≥0, the cold storage material has cold capacity, and the refrigerator heat exchange module is in the cold storage material refrigeration state; when ΔT 1r When <0, the cooling capacity of the cold storage material is insufficient, and the refrigerator heat exchange module is in the direct heat exchanger temperature maintenance state.

[0010] According to some embodiments of the present invention, the cooling information also includes a preset temperature T of the cooling material of the cooling material piece. 1t ; When there is no refrigeration demand for the refrigerator and the passenger compartment, calculate the temperature deviation ΔT of the cold storage material of the cold storage material piece 1 , where the ΔT 1 Satisfy: ΔT 1 =T 1 -T 1t ; When ΔT 1 ≤0, the cold storage material has no energy storage requirement; when ΔT 1 >0, the cold storage material has energy storage demand.

[0011] According to some embodiments of the present invention, the refrigerator status information includes the actual temperature T of the refrigerator. 2 and the preset refrigeration temperature T of the refrigerator 2t The passenger compartment status information includes the actual temperature T of the passenger compartment 3 and the preset cooling temperature T of the passenger compartment 3t .

[0012] According to some embodiments of the present invention, determining the refrigerator refrigeration demand of the refrigerator and the passenger compartment refrigeration demand of the passenger compartment according to the refrigerator status information and the passenger compartment status information specifically includes: calculating the refrigerator refrigeration temperature deviation ΔT of the refrigerator 2 and the passenger compartment cooling temperature deviation ΔT of the passenger compartment 3 , where the ΔT 2 , ΔT 3 Satisfy respectively: ΔT 2 =T 2 -T 2t , ΔT 3 =T 3 -T 3t ; When ΔT 2 ≤0 and ΔT 3 ≤0, the refrigerator and the passenger compartment have no refrigeration demand, and the refrigerator heat exchange module is in the first working mode; when ΔT 2 ≤0 and ΔT 3 >0, the refrigerator has no refrigeration demand, the passenger compartment has refrigeration demand, and the refrigerator heat exchange module is in the second working mode; when ΔT 2 >0 and ΔT 3 ≤0, the passenger compartment has no cooling demand, the refrigerator has cooling demand, and the refrigerator heat exchange module is in the third working mode; when ΔT 2 >0 and ΔT 3 When >0, both the refrigerator and the passenger compartment have cooling demand, and the refrigerator heat exchange module is in the fourth working mode.

[0013] According to some embodiments of the present invention, the refrigerator heat exchange module also includes a direct heat exchanger, an indirect heat exchanger and a cold storage material heat exchanger. The direct heat exchanger and the indirect heat exchanger are connected in series to form a refrigerant flow path. The cold storage material piece is suitable for heat exchange with at least one of the indirect heat exchanger and the cold storage material heat exchanger. When the refrigerator has a cooling demand, at least one of the direct heat exchanger and the cold storage material piece is cooled.

[0014] According to some embodiments of the present invention, the refrigerator includes an air duct and a cold storage material accommodating chamber, the direct heat exchanger and the cold storage material heat exchanger are both arranged in the air duct, a fan is provided in the air duct, the cold storage material piece and the indirect heat exchanger are both arranged in the cold storage material accommodating chamber, the cold storage material heat exchanger is connected to the cold storage material accommodating chamber, and a cold storage circuit is provided between the cold storage material heat exchanger and the cold storage material accommodating chamber.

[0015] According to some embodiments of the present invention, in the fourth working mode, when the cold storage material has cold capacity and the refrigerator heat exchange module is in the cold storage material refrigeration state, the refrigerant flow path is closed, and the fan and the cold storage circuit are turned on; when the cold storage material has insufficient cold capacity and the refrigerator heat exchange module is in the direct heat exchanger temperature maintenance state, the refrigerant flow path and the fan are turned on, and the cold storage circuit is closed.

[0016] According to some embodiments of the present invention, in the first working mode, when the cold storage material has no energy storage demand, the refrigerant flow path, the fan and the cold storage circuit are closed; when the cold storage material has energy storage demand, the fan is closed and the refrigerant flow path and the cold storage circuit are opened.

[0017] According to some embodiments of the present invention, in the third working mode, the refrigerant flow path and the fan are opened, and the cold storage circuit is closed.

[0018] According to some embodiments of the present invention, in the second working mode, the refrigerant flow path, the fan and the cold storage circuit are closed.

[0019] The thermal management system according to the second embodiment of the present invention adopts the control method for the thermal management system of the vehicle according to the first embodiment described above.

[0020] A vehicle according to an embodiment of the third aspect of the present invention comprises a thermal management system according to the embodiment of the second aspect.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0024] Figure 2 is an exploded view of a refrigerator according to an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of a thermal management system according to an embodiment of the present invention;

[0026] Figure 4 is a logic diagram of a control method of a thermal management system according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] 100. thermal management system; 101. air conditioning module; 200. refrigerator;

[0029] 102. Compressor; 103. External heat exchanger;

[0030] 104. In-vehicle heat exchanger; 105. Electronic fan;

[0031] 1. Refrigerator heat exchange module; 11. Direct heat exchanger; 12. Indirect heat exchanger;

[0032] 121. Refrigerant flow path; 13. Cold storage material heat exchanger;

[0033] 2. Air duct; 21. Fan;

[0034] 3. Cold storage material accommodating chamber; 31. Cold storage circuit; 32. Cold storage box;

[0035] 33. Pump; 4. Article storage chamber. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 4 A control method of a thermal management system 100 for a vehicle according to an embodiment of the present invention is described.

[0037] like Figure 3 As shown, according to the control method of the thermal management system 100 for a vehicle according to the first aspect of the present invention, the thermal management system 100 includes a refrigerator heat exchange module 1, and the refrigerator heat exchange module 1 includes a cold storage material piece (not shown in the figure).

[0038] For example, in Figure 3 In the example of , the thermal management system 100 includes an air conditioning module 101 and a refrigerator heat exchange module 1. The refrigerator heat exchange module 1 can be connected to the air conditioning module 101 and share the refrigerant with the air conditioning module 101. The refrigerator 200 is integrated into the thermal management system 100 of the vehicle. The compressor 102 and the heat exchanger of the thermal management system 100 are used to dissipate the heat in the passenger compartment of the vehicle through the external heat exchanger 103 and the electronic fan 105, etc., which can not only increase the effective volume in the refrigerator 200, but also avoid the problem of heat dissipation from the refrigerator 200 to the passenger compartment. In addition, according to the needs of the passengers, the refrigerant flow path 121 of the refrigerator heat exchange module 1 can be connected or disconnected with the refrigerant circuit of the air conditioning module 101, so that the refrigerant flow path 121 of the refrigerator heat exchange module 1 can be connected or disconnected with the refrigerant circuit, so that the thermal management system 100 can be in a variety of different modes and can be switched between a variety of modes, thereby improving the flexibility of the use of the thermal management system 100 and the adaptability of the use of the thermal management system 100, which is conducive to better meeting the needs of the passengers.

[0039] For example, by setting a cold storage material, when the refrigerator 200 is not refrigerated, the cold can be stored in the cold storage material. When both the refrigerator 200 and the passenger compartment have a refrigeration demand, the refrigerant of the thermal management system 100 can give priority to meeting the refrigeration working condition demand of the refrigerator 200, and the refrigerant can be matched to the refrigeration pressure and temperature of the passenger compartment, and the refrigerator 200 can be refrigerated by the cold storage material. In addition, the food and beverage items in the refrigerator 200 and the cold storage material can be heat exchanged at the same time, that is, the energy (for example, cold or heat) of the refrigerant in the cold medium flow path 121 can be used for heat exchange of items in the refrigerator 200. In addition, the excess energy can be stored in the cold storage material for use, which increases the energy demand of the refrigerator heat exchange module 1, effectively increases the heat exchange amount, and improves the speed of refrigeration or heating of the refrigerator 200 (it should be noted that when the cold storage material is a cold storage material, the refrigerator 200 can be used for refrigeration; a heat storage material can also be set to keep the refrigerator 200 warm), so as to meet the use of the refrigerator 200 and the needs of the passengers. The refrigerator 200 can perform refrigeration through cold storage materials, which enriches the heat exchange mode of the refrigerator 200 and improves the reliability of heat exchange of the refrigerator 200.

[0040] In addition, when the refrigerator 200 is integrated into the thermal management system 100 of the vehicle, the energy demand of the refrigerator 200 can be met, and the difference in heat exchange between the refrigerator heat exchange module 1 and the air conditioning module 101 can be reduced, so that the evaporation pressure and energy mismatch between the functions of different temperature control when the refrigerator heat exchange module 1 and the air conditioning module 101 are used at the same time can be solved. Moreover, the distribution of the refrigerant is more reasonable, which effectively guarantees the cooling or heating speed of the refrigerator heat exchange module 1, meets the needs of users, and effectively guarantees the cooling or heating capacity of the air conditioning module 101, so that the refrigerator 200 can be used normally, and the thermal management system 100 is more matched as a whole, and each component of the thermal management system 100 (for example, the compressor 102, the heat exchanger and the pipeline, etc.) is relatively matched, thereby ensuring the normal use of the refrigerator 200 and the normal operation of the thermal management system 100.

[0041] Combination Figure 4 , the control method of the thermal management system 100 comprises the following steps:

[0042] A. Obtain refrigerator status information of the refrigerator 200 of the vehicle and passenger compartment status information of the passenger compartment of the vehicle.

[0043] B. Determine the refrigerator refrigeration requirement of the refrigerator 200 and the passenger compartment refrigeration requirement of the passenger compartment according to the refrigerator status information and the passenger compartment status information.

[0044] C. When both the refrigerator 200 and the passenger compartment have cooling requirements, the cooling capacity information of the cold storage material is obtained.

[0045] E. Determine the working mode of the refrigerator heat exchange module 1 according to the cooling capacity information.

[0046] For example, by obtaining the refrigerator status information of the refrigerator 200 and the passenger compartment status information of the passenger compartment, it can be determined whether the refrigerator 200 and the passenger compartment have a refrigeration demand, so as to adjust the working mode of the thermal management system 100 according to the demand of the refrigerator 200 and the passenger compartment. When both the refrigerator 200 and the passenger compartment have a refrigeration demand, that is, when the refrigerator heat exchange module 1 is in the fourth working mode, the cold capacity information of the cold storage material part, that is, the status information of the cold storage material part, is obtained. For example, when the cold storage material part does not store cold capacity, the refrigerator 200 cannot be refrigerated by the cold storage material part. When the cold capacity of the cold storage material part is sufficient, the refrigerator 200 can be refrigerated by the cold storage material part, which can enrich the refrigeration mode of the refrigerator 200 and improve the refrigeration performance and use performance of the refrigerator 200. In addition, the control method is simple in logic, which is conducive to the management and control of the thermal management system 100.

[0047] According to the control method of the thermal management system 100 for a vehicle in an embodiment of the present invention, by setting a cold storage material piece, the problem of evaporation pressure and energy mismatch between functions of different temperature control when the refrigerator heat exchange module 1 and the air conditioning module 101 are used at the same time can be solved. Moreover, the distribution of the refrigerant is more reasonable, which effectively ensures the cooling or heating speed of the refrigerator heat exchange module 1, meets the needs of users, and also effectively ensures the cooling or heating capacity of the air conditioning module 101. In addition, by cooling the refrigerator 200 through the cold storage material piece, the cooling mode of the refrigerator 200 can be enriched, and the cooling performance and use performance of the refrigerator 200 can be improved. The control method is simple in logic, which is conducive to the management and control of the thermal management system 100.

[0048] According to some embodiments of the present invention, Figure 4 The cooling information includes the actual temperature T of the cooling material. 1 and the refrigeration temperature T of the cold storage material 1r According to the cooling information, determining the working mode of the refrigerator heat exchange module 1 specifically includes: calculating the cooling temperature deviation ΔT of the cooling material of the cooling material 1r , where ΔT 1r Satisfy: ΔT 1r =T 1r -T 1 .

[0049] C5.1, when ΔT 1r When ≥0, the cold storage material has cold capacity, and the refrigerator heat exchange module 1 is in the cold storage material refrigeration state.

[0050] C5.2, when ΔT 1r When <0, the cold storage material has insufficient cooling capacity, and the refrigerator heat exchange module 1 is in the direct heat exchanger temperature maintenance state.

[0051] For example, when the actual temperature of the cold storage material is lower than the refrigeration temperature of the cold storage material, cold is stored in the cold storage material (for example, when the temperature of the cold storage material is lower than the target temperature such as 0°C), and when the refrigerator 200 has a refrigeration demand, the cold storage material can be used to refrigerate the refrigerator 200. When the actual temperature of the cold storage material is higher than the refrigeration temperature of the cold storage material, the cold in the cold storage material is insufficient to refrigerate the refrigerator 200, and the refrigerator heat exchange module 1 performs heat exchange and temperature maintenance through the direct heat exchanger 11. Therefore, it is possible to determine whether the cold storage material can meet the refrigeration demand through the cold information of the cold storage material to adjust the working mode of the air conditioning heat exchange module, and the control logic is simple and the control accuracy is high.

[0052] According to some embodiments of the present invention, the cooling information also includes a preset temperature T of the cooling material of the cooling material piece. 1t .

[0053] C1. When there is no refrigeration demand in the refrigerator 200 and the passenger compartment (i.e., the refrigerator heat exchange module 1 is in the first working mode), the cold storage material temperature deviation ΔT of the cold storage material is calculated. 1 , where ΔT 1 Satisfy: ΔT 1 =T 1 -T 1t .

[0054] C1.1, when ΔT 1 When ≤0, the cold storage material has no energy storage requirement.

[0055] C1.2, when ΔT 1 When >0, the cold storage material has energy storage demand.

[0056] For example, when there is no cooling demand in the refrigerator 200 and the passenger compartment, the refrigerant flow path 121 of the refrigerator heat exchange module 1 can be controlled to be opened or closed according to the cold storage demand of the cold storage material. The working modes of the refrigerator heat exchange module 1 include the following situations:

[0057] First, when the refrigerator 200 has no refrigeration demand and the cold storage material of the refrigerator 200 has no cold storage demand (for example, the temperature of the cold storage material is lower than the target temperature such as -10°C), the refrigerant flow path 121 is closed, and the cold storage material can be directly used for refrigeration of the refrigerator 200.

[0058] Second, when the refrigerator 200 has no refrigeration demand but the cold storage material of the refrigerator 200 has a cold storage demand (for example, the temperature of the cold storage material is higher than the target temperature such as -10°C), the refrigerant flow path 121 is opened, and the evaporation pressure and evaporation temperature of the refrigerant match the refrigeration working conditions of the refrigerator 200 (for example, the evaporation pressure is about 200 kPa, and the evaporation temperature is -10°C). The direct heat exchanger 11 and the indirect heat exchanger 12 are connected in series to form the refrigerant flow path 121. The direct heat exchanger 11 does not work and passes through as a flow channel. The refrigerant exchanges heat with the cold storage material through the indirect heat exchanger 12, so that the cold storage material stores cold.

[0059] With such a configuration, the actual information of the cold storage material can be obtained in time by calculating the cold storage material temperature deviation ΔT1 of the cold storage material, so as to adjust the working state of the refrigerator heat exchange module 1 accordingly, so that the cold storage material can meet the refrigeration needs of the refrigerator 200 and better meet the use requirements of the refrigerator 200. In addition, the cold storage material can be used to store cold when there is no refrigeration demand in the refrigerator 200 and the passenger compartment, which reduces the impact on the use of the air conditioning module 101 and ensures the cold storage and refrigeration capacity of the cold storage material.

[0060] According to some embodiments of the present invention, the refrigerator state information includes the actual temperature T of the refrigerator 200. 2 and the preset refrigeration temperature T of the refrigerator 200 2t , the cabin status information includes the actual cabin temperature T 3 and the preset cooling temperature T of the passenger compartment 3t . Thus, by obtaining the actual temperature of the refrigerator 200 and the preset refrigeration temperature of the refrigerator 200, the current actual state of the refrigerator 200 can be known, so as to calculate the refrigeration demand of the refrigerator 200 accordingly, and thus the working mode of the refrigerator heat exchange module 1 can be determined according to the refrigeration demand of the refrigerator 200. In addition, by obtaining the actual temperature of the passenger compartment and the preset refrigeration temperature of the passenger compartment, the current actual state of the passenger compartment can be known, so as to calculate the refrigeration demand of the passenger compartment accordingly, and the working mode of the thermal management system 100 can be determined in combination with the state information of the refrigerator 200 and the state information of the passenger compartment, so as to better solve the problem of evaporation pressure and energy mismatch between functions of different temperature control when the refrigerator heat exchange module 1 and the air conditioning module 101 are used at the same time, and at the same time, the use requirements of the refrigerator 200 and the passenger compartment can be met.

[0061] According to some embodiments of the present invention, determining the refrigerator refrigeration demand of the refrigerator 200 and the passenger compartment refrigeration demand of the passenger compartment according to the refrigerator state information and the passenger compartment state information specifically includes: calculating the refrigerator refrigeration temperature deviation ΔT of the refrigerator 200 2 The passenger compartment cooling temperature deviation ΔT of the passenger compartment 3 , where ΔT 2 , ΔT 3Satisfy respectively: ΔT 2 =T 2 -T 2t , ΔT 3 =T 3 -T 3t .

[0062] Combination Figure 4 , when ΔT 2 ≤0 and ΔT 3 ≤0, there is no cooling demand for the refrigerator 200 and the passenger compartment, and the refrigerator heat exchange module 1 is in the first working mode. That is to say, when the actual temperature of the refrigerator 200 is less than or equal to the preset cooling temperature of the refrigerator 200, the actual temperature inside the refrigerator 200 is low, and there is no need to cool the refrigerator 200. When the actual temperature of the passenger compartment is less than or equal to the preset cooling temperature of the passenger compartment, the actual temperature inside the passenger compartment is low, and there is no need to cool the passenger compartment. At this time, the working state of the refrigerator heat exchange module 1 can be adjusted according to the cooling demand of the cooling material.

[0063] Combination Figure 4 , when ΔT 2 ≤0 and ΔT 3 >0, the refrigerator 200 has no refrigeration demand, the passenger compartment has a refrigeration demand, and the refrigerator heat exchange module 1 is in the second working mode. That is to say, when the actual temperature of the refrigerator 200 is less than or equal to the preset refrigeration temperature of the refrigerator 200, the actual temperature inside the refrigerator 200 is low, and there is no need to refrigerate the refrigerator 200. When the actual temperature of the passenger compartment is greater than the preset refrigeration temperature of the passenger compartment, the actual temperature inside the passenger compartment is high, the refrigerant circuit is turned on to exchange heat in the passenger compartment, and the refrigerant flow path 121 is closed at the same time. At this time, the refrigerant in the refrigerant circuit can be matched to the passenger compartment refrigeration condition (for example, the evaporation pressure is about 300kPa, and the evaporation temperature is 0°C) to meet the refrigeration demand of the passenger compartment.

[0064] Combination Figure 4 , when ΔT 2 >0 and ΔT 3 ≤0, there is no cooling demand in the passenger compartment, the refrigerator 200 has a cooling demand, and the refrigerator heat exchange module 1 is in the third working mode. That is to say, when the actual temperature of the refrigerator 200 is greater than the preset cooling temperature of the refrigerator 200, the actual temperature inside the refrigerator 200 is higher, and the refrigerator 200 has a cooling demand. When the actual temperature of the passenger compartment is less than or equal to the preset cooling temperature of the passenger compartment, the actual temperature inside the passenger compartment is lower, and there is no need to cool the passenger compartment. At this time, the refrigerant circuit of the air-conditioning module 101 is closed, and the refrigerant can be directly used for the cooling of the refrigerator heat exchange module 1, that is, the refrigerant flow path 121 is opened, and the evaporation pressure is matched to the working pressure and evaporation temperature of the refrigerator 200 (for example, the evaporation pressure is about 200kPa, and the evaporation temperature is -10°C).

[0065] Combination Figure 4 , when ΔT 2 >0 and ΔT 3 >0, both the refrigerator 200 and the passenger compartment have cooling needs, and the refrigerator heat exchange module 1 is in the fourth working mode. That is to say, when the actual temperature of the refrigerator 200 is greater than the preset cooling temperature of the refrigerator 200, the actual temperature inside the refrigerator 200 is relatively high, and the refrigerator 200 has cooling needs. When the actual temperature of the passenger compartment is greater than the preset cooling temperature of the passenger compartment, the actual temperature inside the passenger compartment is relatively high, and the refrigerant circuit is turned on to exchange heat in the passenger compartment. At this time, the refrigerant is preferentially matched to the passenger compartment cooling condition (for example, the evaporation pressure is about 300kPa, and the evaporation temperature is 0°C) to meet the cooling needs of the passenger compartment. At the same time, according to the cold capacity information of the cold storage material, it can be determined that the refrigerator heat exchange module 1 is in the cold storage material cooling state or the direct heat exchanger temperature maintenance state.

[0066] According to some embodiments of the present invention, Figure 1-Figure 3 The refrigerator heat exchange module 1 also includes a direct heat exchanger 11, an indirect heat exchanger 12 and a cold storage material heat exchanger 13. The direct heat exchanger 11 and the indirect heat exchanger 12 are connected in series to form a refrigerant flow path 121. The cold storage material piece is suitable for heat exchange with at least one of the indirect heat exchanger 12 and the cold storage material heat exchanger 13. When the refrigerator 200 has a cooling demand, at least one of the direct heat exchanger 11 and the cold storage material piece is cooled.

[0067] For example, in Figure 1-Figure 3 In the example, when the refrigerant flows through the refrigerant flow path 121, the refrigerant can cool or heat the items with a portion of its energy through the direct heat exchanger 11, and store the other portion of its energy in the cold storage material through the indirect heat exchanger 12. When the refrigerator 200 has a heat exchange demand, such as a cooling demand, the direct heat exchanger 11 can be selected to work for cooling or the cold storage material can be selected to work for cooling according to the actual state of the refrigerator 200. When the cold storage material has sufficient cold capacity and the cold storage material works for cooling, the cold storage material can exchange heat with the item receiving chamber 4 through the cold storage material heat exchanger 13 to achieve cooling of the refrigerator 200.

[0068] The working states of the refrigerator 200 include the following situations:

[0069] When the refrigerator 200 has a cooling demand, the refrigerator 200 can use the cold storage material for cooling (for example, when the temperature of the cold storage material is lower than the target temperature such as 0° C.), the refrigerant flow path 121 is closed.

[0070] When the refrigerator 200 has a cooling demand, and the refrigerator 200 cannot use the cold storage material for cooling (for example, the temperature of the cold storage material is higher than the target temperature such as 0°C), the refrigerant flow path 121 is opened, and the refrigerant uses part of the energy to cool or heat the items through the direct heat exchanger 11, and stores the other part of the energy in the cold storage material through the indirect heat exchanger 12.

[0071] In this way, by setting the indirect heat exchanger 12, the cold storage material and the cold storage material heat exchanger 13, when the refrigerator 200 is in use, the food and beverage items and the cold storage material in the refrigerator 200 can be heat exchanged at the same time, that is, the energy of the refrigerant (for example, cold or heat) is used for heat exchange in the direct heat exchanger 11, and the excess energy is stored in the cold storage material, or the energy can be stored at the cold storage material for use, which increases the energy demand of the refrigerator 200, effectively increases the heat exchange amount, and improves the cooling or heating speed of the refrigerator 200 (it should be noted that when the cold storage material is cold storage, the refrigerator 200 can be used for cooling; the cold storage material can also be replaced with the heat storage material to achieve heating of the refrigerator 200), so as to meet the use of the refrigerator 200 and the needs of the occupants. The refrigerator 200 can be cooled or heated by the direct heat exchanger 11 or the cold storage material, enriching the heat exchange mode of the refrigerator 200 and improving the reliability of the heat exchange of the refrigerator 200.

[0072] In addition, the refrigerator 200 can be used in different states, the energy loss in the refrigerant is reduced, and the utilization rate of energy is improved. In addition, when the refrigerator 200 is integrated into the thermal management system 100 of the vehicle, the energy demand of the refrigerator 200 can be met, and the difference in the heat exchange amount between the refrigerator heat exchange module 1 and the air conditioning module 101 can be reduced, so that the evaporation pressure and energy mismatch between the functions of different temperature control when the refrigerator heat exchange module 1 and the air conditioning module 101 are used at the same time can be solved. Moreover, the distribution of the refrigerant is more reasonable, which effectively guarantees the cooling or heating speed of the refrigerator heat exchange module 1, meets the needs of users, and effectively guarantees the cooling or heating capacity of the air conditioning module 101, so that the refrigerator 200 can be used normally, and the thermal management system 100100 is more matched as a whole, and each component of the thermal management system 100 (for example, the heat exchanger, the compressor 102 and the pipeline, etc.) is relatively matched, thereby ensuring the normal use of the refrigerator 200 and the normal operation of the thermal management system 100.

[0073] For example, the cold storage material heat exchanger 13 contacts the cold storage material piece for heat exchange, and the indirect heat exchanger 12 contacts the cold storage material piece for heat exchange. In this way, when the cold storage material heat exchanger 13 and the cold storage material piece are heat exchanged, the cold storage material piece directly cools or heats the items in the refrigerator 200 at the cold storage material heat exchanger 13 to meet the needs of customers in summer or winter, thereby meeting the needs of customers. When the indirect heat exchanger 12 and the cold storage material piece are heat exchanged, the refrigerant in the indirect heat exchanger 12 and the cold storage material piece exchange heat to reduce the temperature of the cold storage material piece, that is, the excess energy can be stored in the cold storage material piece, so as to cool or heat the items in the refrigerator 200 through the cold storage material piece to maintain the temperature required for cooling or heating the refrigerator 200, so that during the operation of the refrigerator 200, the refrigerator 200 is in a cooling or heating state, thereby improving the use performance of the refrigerator 200. It should be noted that the working principles of cooling and heating of the refrigerator 200 are similar, and cooling is used as an example for explanation.

[0074] According to some embodiments of the present invention, Figure 1 and Figure 2 The refrigerator 200 includes an air duct 2 and a cold storage material accommodating chamber 3. The direct heat exchanger 11 and the cold storage material heat exchanger 13 are both arranged in the air duct 2. A fan 21 is arranged in the air duct 2. The cold storage material and the indirect heat exchanger 12 are both arranged in the cold storage material accommodating chamber 3. The cold storage material heat exchanger 13 is connected to the cold storage material accommodating chamber 3. A cold storage circuit 31 is arranged between the cold storage material heat exchanger 13 and the cold storage material accommodating chamber 3. The refrigerator 200 has an article accommodating chamber 4 and a cold storage material accommodating chamber 3. The cold storage material accommodating chamber 3 is located on a side of the direct heat exchanger 11 and the cold storage material heat exchanger 13 away from the center of the article accommodating chamber 4. The energy storage material, the direct heat exchanger 11, the indirect heat exchanger 12 and the cold storage material heat exchanger 13 are all arranged in the cold storage material accommodating chamber 3.

[0075] For example, in Figure 1 and Figure 2 In the example, the article receiving chamber 4 can be used to receive articles. Thus, the direct heat exchanger 11 and the cold storage material heat exchanger 13 can directly exchange heat with the articles in the article receiving chamber 4, so that the articles can be cooled and refrigerated or heated, thereby facilitating the cooling or heating speed of the articles and improving the use effect of the refrigerator 200. In addition, it also avoids the energy storage material, the direct heat exchanger 11, the indirect heat exchanger 12 and the cold storage material heat exchanger 13 occupying the space of the article receiving chamber 4, thereby increasing the amount that the article receiving chamber 4 can accommodate, and further improving the use performance of the refrigerator 200.

[0076] For example, in Figure 1 and Figure 2In the example, the direct heat exchanger 11 is located above the energy storage material heat exchanger. The air in the article receiving chamber 4 flows into the article receiving chamber 4 along the lower end of the air duct 2, and then flows into the air duct 2 from the upper end of the air duct 2 under the action of the fan 21. Then the air passes through the direct heat exchanger 11 and the energy storage material heat exchanger in turn, and heat exchange occurs, so that the exhaust air temperature is low. Such a setting effectively ensures that the air can circulate in the refrigerator 200, and the temperature of the air flowing into the article receiving chamber 4 is low, so as to cool and refrigerate the articles. In addition, the internal structure of the refrigerator 200 is simple and easy to process, thereby improving the production efficiency of the refrigerator 200. In addition, by setting the cold storage circuit 31, the cold storage material pieces can flow in an orderly manner between the cold storage material receiving chamber 3 and the cold storage material heat exchanger 13, so that the cold storage material pieces flow to the cold storage material heat exchanger 13 for heat exchange, thereby ensuring the normal use of the cold storage material heat exchanger 13. For example, a cold storage box 32 can be set in the cold storage material accommodating chamber 3, and the cold storage box 32 is used to store cold storage material pieces. A pump 33 is provided on the cold storage box 32, which can act on the cold storage material pieces to make the cold storage material pieces flow between the cold storage box 32 and the cold storage material heat exchanger 13.

[0077] According to some embodiments of the present invention, in the fourth working mode, when the cold storage material has cold capacity and the refrigerator heat exchange module 1 is in the cold storage material refrigeration state, the refrigerant flow path 121 is closed, and the fan 21 and the cold storage circuit 31 are turned on. That is, when the refrigerator heat exchange module 1 is in the fourth working mode and the cold storage material has cold capacity, the connection between the refrigerant flow path 121 and the refrigerant circuit can be cut off, and the fan 21 and the pump 33 can be turned on.

[0078] D5. When the refrigerator 200 and the passenger compartment have cooling requirements at the same time, the refrigerator 200 can use the cold storage material for cooling (that is, the refrigerator heat exchange module 1 is in the cold storage material cooling state), the actual temperature in the refrigerator 200 is higher than the target temperature, and it is necessary to provide cooling for the item storage chamber 4 of the refrigerator 200, and at the same time, when the actual temperature of the cold storage material in the cold storage box 32 is lower than the target temperature in the item storage chamber 4, the cold storage material can be used for cooling. At this time, the refrigerator 200 has a cooling requirement, the centrifugal fan 21 is turned on, and the air in the item storage chamber 4 and the cold storage material heat exchanger 13 are forced to exchange heat by convection. The pump 33 is turned on, and the cold storage material flows between the cold storage box 32 and the cold storage material heat exchanger 13. Combining the functions of the centrifugal fan 21 and the pump 33, the air in the item receiving chamber 4 exchanges heat with the low-temperature cold storage material through the cold storage material heat exchanger 13, the low-temperature cold storage material is heated up, and the air in the item receiving chamber 4 is cooled down, and then the items in the item receiving chamber 4 are cooled, completing the refrigeration process of the refrigerator 200; the refrigerant flow path 121 in the refrigerator 200 stops working, and the direct heat exchanger 11 does not participate in the heat exchange and refrigeration of the air in the item receiving chamber 4.

[0079] In the fourth working mode, when the cold storage material is insufficient and the refrigerator heat exchange module 1 is in the direct heat exchanger temperature maintenance state, the refrigerant flow path 121 and the fan 21 are turned on, and the cold storage circuit 31 is closed. That is, when the refrigerator heat exchange module 1 is in the fourth working mode and the cold storage material is insufficient, the refrigerant flow path 121 is connected to the refrigerant circuit, the fan 21 is turned on, and the pump 33 is turned off. It should be noted that, in combination with Figure 3 The air conditioning module 101 includes a compressor 102, an outdoor heat exchanger 103 and an indoor heat exchanger 104 connected to form a refrigerant circuit, one end of the outdoor heat exchanger 103 is connected to the outlet of the compressor 102, the indoor heat exchanger 104 is connected between the other end of the outdoor heat exchanger 103 and the inlet of the compressor 102, and the direct heat exchanger 11 and the indirect heat exchanger 12 are connected in parallel with the indoor heat exchanger 104.

[0080] D6. Both the refrigerator 200 and the passenger compartment have cooling requirements at the same time, but the refrigerator 200 cannot use the cold storage material for cooling and enters the direct heat exchanger temperature maintenance state: when the cooling function of the air-conditioning module 101 is running and the temperature of the cold storage material is high, the refrigerant flow path 121 is opened and the direct heat exchanger 11 can be used to maintain the temperature in the item storage cavity 4. Since the refrigerant circuit is opened and the refrigerant flow path 121 is connected to it, the evaporation pressure of the refrigerant can only match the working pressure of the passenger compartment cooling (for example, about 300 kPa, evaporation temperature 0°C). Further reduction will cause the in-vehicle heat exchanger 104 of the air-conditioning module 101 to freeze. The 0°C refrigerant cannot cool the cold storage material and store cold energy, so the pump 33 in the refrigerator 200 is also turned off. The refrigerant flow path 121 in the refrigerator 200 is turned on for refrigeration, and the evaporation pressure is matched to the working pressure of the air conditioning module 101 (about 300 kPa, evaporation temperature 0°C), and the direct heat exchanger 11 exchanges heat with the circulating air passing through the centrifugal fan 21 to maintain the refrigerated environment in the item storage chamber 4. For example, in the above working mode, the evaporation pressure of the refrigerant in the refrigerant flow path 121 is P 1 The evaporation temperature of the refrigerant in the refrigerant flow path 121 is T 4 , where P 1 、T 4 Satisfy respectively: 300kPa≤P 1 ≤410kPa, 0℃≤T 4 ≤10℃.

[0081] For example, in Figure 3In the example, when the air conditioning module 101 is in cooling mode, the compressor 102, the external heat exchanger 103 and the internal heat exchanger 104 are connected in series. When the air conditioning module 101 is in cooling mode, when the refrigerant flowing out of the outlet of the compressor 102 passes through the external heat exchanger 103, the external heat exchanger 103 acts as a condenser, and the refrigerant exchanges heat with the external environment, and the refrigerant releases heat. The internal heat exchanger 104 acts as an evaporator, and the refrigerant absorbs heat from the high-temperature air in the passenger compartment. When the refrigerant flows through the internal heat exchanger 104, the refrigerant exchanges heat with the air in the vehicle to cool the air in the passenger compartment, realizing the cooling mode of the air conditioning module 101. Therefore, when the temperature in the passenger compartment is high, the cooling mode of the air conditioning module 101 can be turned on to cool the passenger compartment, thereby improving the comfort of the users in the vehicle.

[0082] According to some embodiments of the present invention, in the first working mode, when the cold storage material has no energy storage demand, the refrigerant flow path 121, the fan 21 and the cold storage circuit 31 are closed. When the cold storage material has energy storage demand, the fan 21 is closed, and the refrigerant flow path 121 and the cold storage circuit 31 are opened.

[0083] In order to reasonably allocate the refrigerant flow and refrigerant evaporation temperature on the air conditioner side and the refrigerator 200 side when both the passenger compartment of the electric vehicle and the refrigerator 200 are turned on, the present invention provides a control strategy for the refrigerator 200 using a cold storage material. The refrigerant flow path 121 in the refrigerator 200 and the evaporation pressure of the refrigerant flow path 121, the start and stop and speed of the centrifugal fan 21 in the refrigerator 200, and the start and stop and speed of the pump 33 in the refrigerator 200 are controlled according to different refrigeration requirements of the air conditioner and the refrigerator 200.

[0084] D1. When the refrigerator 200 and the passenger compartment have no cooling demand, and the cold storage material has no cooling demand, the temperature of the cold storage material is not higher than the target temperature -10°C. At this time, the refrigerator 200 has no cooling demand, so the centrifugal fan 21 and the pump 33 are also turned off, and the cold storage material has reached the target temperature, and the refrigerant flow path 121 is not needed to cool it, so the refrigerant flow path 121 is closed.

[0085] D2. When there is no refrigeration demand for the refrigerator 200 and the passenger compartment, and there is a demand for cold storage material, the temperature of the cold storage material is higher than the target temperature of -10°C. At this time, the refrigerator 200 has no refrigeration demand, so the centrifugal fan 21 is turned off. The cold storage material in the refrigerator 200 needs to be cooled, and the refrigerant flow path 121 in the refrigerator 200 is opened to cool the cold storage material. Since the refrigerant circuit is not opened, the evaporation pressure can be matched to the working pressure of the refrigerator 200 (about 200 kPa, evaporation temperature -10°C) alone, which is convenient for rapid refrigeration. At the same time, the pump 33 is turned on. After the water pump 33 is turned on, the heat exchange between the cold storage material and the indirect heat exchanger 12 is enhanced, and the speed of the pump 33 is controlled according to the difference between the actual temperature of the cold storage material and the target temperature of -10°C. After the temperature of the cold storage material drops to the target temperature, this working condition stops. For example, in the above working mode, the evaporation pressure of the refrigerant in the refrigerant flow path 121 is P 3 The evaporation temperature of the refrigerant in the refrigerant flow path 121 is T 6 , where P 3 、T 6 Satisfy respectively: 200kPa≤P 3 ≤300kPa, -10℃≤T 6 ≤0℃.

[0086] According to some embodiments of the present invention, in the third working mode, the refrigerant flow path 121 and the fan 21 are opened, and the cold storage circuit 31 is closed.

[0087] D4. When the passenger compartment has a cooling demand and the refrigerator 200 has no cooling demand, the centrifugal fan 21 in the refrigerator 200 is turned off. In addition, since the refrigerant circuit is turned on and the refrigerant flow path 121 is connected to it, even if it is turned on, the evaporation pressure can only match the air-conditioning working pressure (about 300 kPa, evaporation temperature 0°C). Further reduction will cause the in-vehicle heat exchanger 104 on the air-conditioning side to freeze. The 0°C refrigerant cannot cool the cold storage material and store cold, so the refrigerant flow path 121 in the refrigerator 200 is closed, and the pump 33 is also turned off.

[0088] According to some embodiments of the present invention, in the second working mode, the refrigerant flow path 121, the fan 21 and the cold storage circuit 31 are closed.

[0089] D3. When there is no cooling demand in the passenger compartment and there is a cooling demand in the refrigerator 200, the load in the refrigerator 200 (such as beverages, fruits, etc.) needs to be cooled. The refrigerant flow path 121 in the refrigerator 200 is opened and flows through the refrigerant direct heat exchanger 11. Since the refrigerant circuit is not opened, the evaporation pressure can be matched to the working pressure of the refrigerator 200 (about 200 kPa, evaporation temperature -10°C) through the wind circulation provided by the centrifugal fan 21. The air cools down after heat exchange with the cold storage material heat exchanger 13 and the direct heat exchanger 11 in turn, and the load in the refrigerator 200 is continuously cooled. The low-temperature refrigerant enters the direct heat exchanger 11 and the indirect heat exchanger 12 in turn through the refrigerant flow path 121, and lowers the temperature of the circulating air and the temperature of the cold storage material parts in turn. After the cold storage material parts are cooled down by the refrigerant in the indirect heat exchanger 12, they enter the cold storage material parts heat exchanger and exchange heat with the circulating air in the refrigerator 200. For example, in the above working mode, the evaporation of the refrigerant in the refrigerant flow path 121 is P 2 The evaporation temperature of the refrigerant in the refrigerant flow path 121 is T 5 , where P 2 、T 5 Satisfy respectively: 200kPa≤P 2 ≤300kPa, -10℃≤T 5 ≤0°C. Thus, by controlling the different states of the refrigerant flow path 121, the pump 33 and the fan 21, the working mode of the thermal management system 100 and the working mode of the refrigerator heat exchange module 1 can be accurately adjusted to facilitate the normal operation of the refrigerator 200 in different states.

[0090] Combination Figure 4 The working states of the air conditioning module 101 and the refrigeration box module may include the following situations:

[0091] First, when the air-conditioning module 101 is not working, for example, when the vehicle is parked, the direct heat exchanger 11 of the refrigerator heat exchange module 1 is not turned on to cool the load in the refrigerator 200, but the refrigerant flows through the indirect heat exchanger 12 of the refrigerator heat exchange module 1. At this time, the evaporation pressure is matched to the working pressure of the refrigerator 200 (about 200 kPa, evaporation temperature -10°C), that is, the indirect heat exchanger of the refrigerator heat exchange module 1 is turned on to cool the cold storage material, so that the temperature of the cold storage material reaches the refrigeration temperature requirement of the refrigerator 200.

[0092] Second, when the passenger enters the passenger compartment and turns on the cooling mode of the air conditioning module 101, the thermal management system 100 only turns on the air conditioning module 101 for cooling, that is, the refrigerant flows through the in-car heat exchanger 104 to cool the interior of the car, and the refrigerant does not flow through the refrigerator heat exchange module 1. In this process, the evaporation pressure can be matched to the required working pressure of the air conditioning module 101 (about 300 kPa, evaporation temperature 0°C), and when the refrigerator has a cooling demand, the cold storage material cools the interior of the refrigerator, that is, the cold storage material cools.

[0093] Third, when the refrigerator heat exchange module 1 receives a work request and the air conditioning module 101 receives a work request for the cooling mode, the thermal management system 100 can only turn on the cooling mode of the air conditioning module 101, and the refrigerant flow path 121 of the refrigerator heat exchange module 1 is not turned on. At this time, the coldness of the cold storage material can be used to cool down the items. After the air conditioning module 101 and the cold storage material of the refrigerator heat exchange module 1 have been working for a long period of time, the temperature increase of the cold storage material (for example, from -10°C to about 0°C) is not enough to play a cooling role. The cooling circuit of the refrigerator heat exchange module 1 is turned on, and the direct heat exchanger 11 of the refrigerator heat exchange module 1 is used for heat exchange to maintain the refrigeration temperature of the refrigerator heat exchange module 1 (for example, 0 to 10°C).

[0094] Fourth, when the refrigerator heat exchange module 1 receives a work request alone, that is, when only the refrigerator heat exchange module 1 is in cooling mode, the evaporation pressure of the refrigerant matches the working pressure of the refrigeration box (about 200kPa, evaporation temperature -10°C), and the refrigerant exchanges heat with the air flowing to the direct heat exchanger 11 of the refrigerator heat exchange module 1 when flowing through the direct heat exchanger 11 of the refrigerator heat exchange module 1, and the direct heat exchanger 11 of the refrigerator heat exchange module 1 cools. When the refrigerant flows through the indirect heat exchanger 12 of the refrigerator heat exchange module 1, a part of the cold energy is stored in the cold storage material through the indirect heat exchanger 12 of the refrigerator heat exchange module 1.

[0095] It should be noted that when the refrigerator heat exchange module 1 works alone, the pressure is about 200 kPa and the evaporation temperature is -10°C. When the air-conditioning module 101 is not cooling, the refrigerant flowing through the indirect heat exchanger 12 can reduce the temperature of the cold storage material to the target temperature of -10°C. When the refrigerator heat exchange module 1 is not working, the fan 21 is shut down, and the refrigerant is only used to cool the energy storage material. When the refrigerator heat exchange module 1 is in a cooling state, both the direct heat exchanger 11 and the cold storage material can be used to cool the refrigerator 200. The above-mentioned temperatures and pressures are only examples of common parameters, which can be specifically adjusted accordingly according to the use of the thermal management system 100.

[0096] The thermal management system 100 according to the second embodiment of the present invention adopts the control method of the thermal management system 100 for a vehicle according to the first embodiment.

[0097] According to the thermal management system 100 of the embodiment of the present invention, through the above-mentioned control method, the control logic is simple, the control is sensitive, and the accuracy is high. It can facilitate the switching of the working state of the thermal management system 100, is more conducive to the use of the thermal management system 100, and improves the performance of the thermal management system 100.

[0098] A vehicle according to an embodiment of the third aspect of the present invention comprises a thermal management system 100 according to the embodiment of the second aspect.

[0099] According to the vehicle of the embodiment of the present invention, by adopting the above control method or the above thermal management system 100, the flexibility and stability of the vehicle are improved, so that the vehicle can be used normally for a long time.

[0100] The thermal management system 100 and other components and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail herein.

[0101] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0102] In the description of the present invention, "plurality" means two or more.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0104] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A control method for a thermal management system of a vehicle, characterized in that: The thermal management system includes a refrigerator heat exchange module, the refrigerator heat exchange module includes a cold storage material, and the control method includes the following steps: acquiring refrigerator status information of a refrigerator of the vehicle and passenger compartment status information of a passenger compartment of the vehicle; determining a refrigerator refrigeration requirement of the refrigerator and a passenger compartment refrigeration requirement of the passenger compartment according to the refrigerator status information and the passenger compartment status information; When both the refrigerator and the passenger compartment have cooling requirements, obtaining cooling capacity information of the cold storage material piece; The operating mode of the refrigerator heat exchange module is determined according to the cooling capacity information.

2. The control method for a thermal management system of a vehicle according to claim 1, characterized in that: The cooling information includes the actual temperature T1 of the cooling material and the cooling temperature T 1r , the determining the working mode of the refrigerator heat exchange module according to the cooling capacity information specifically includes: Calculate the cold storage material refrigeration temperature deviation ΔT of the cold storage material piece 1r , where the ΔT 1r Satisfy: ΔT 1r =T 1r -T1; When ΔT 1r When ≥0, the cold storage material has cold capacity, and the refrigerator heat exchange module is in the cold storage material refrigeration state; When ΔT 1r When <0, the cooling capacity of the cold storage material is insufficient, and the refrigerator heat exchange module is in the direct heat exchanger temperature maintenance state.

3. The control method for a thermal management system of a vehicle according to claim 2, characterized in that: The cooling information also includes the preset temperature T of the cooling material of the cooling material piece. 1t ; When there is no refrigeration demand for the refrigerator and the passenger compartment, the cold storage material temperature deviation ΔT1 of the cold storage material is calculated, wherein ΔT1 satisfies: ΔT1=T1-T 1t ; When ΔT1≤0, the cold storage material has no energy storage requirement; When ΔT1>0, the cold storage material has energy storage demand.

4. The control method for a thermal management system of a vehicle according to claim 3, characterized in that: The refrigerator status information includes the actual temperature T2 of the refrigerator and the preset refrigeration temperature T 2t ; The passenger compartment state information includes the actual temperature T3 of the passenger compartment and the preset cooling temperature T 3t .

5. The control method for a thermal management system of a vehicle according to claim 4, characterized in that: The determining, according to the refrigerator state information and the passenger compartment state information, a refrigerator refrigeration requirement of the refrigerator and a passenger compartment refrigeration requirement of the passenger compartment specifically includes: Calculate the refrigerator refrigeration temperature deviation ΔT2 of the refrigerator and the passenger compartment refrigeration temperature deviation ΔT3 of the passenger compartment, wherein ΔT2 and ΔT3 respectively satisfy: ΔT2=T2-T 2t , ΔT3=T3-T 3t ; When ΔT2≤0 and ΔT3≤0, there is no refrigeration demand for the refrigerator and the passenger compartment, and the refrigerator heat exchange module is in the first working mode; When ΔT2≤0 and ΔT3>0, the refrigerator has no refrigeration demand, the passenger compartment has refrigeration demand, and the refrigerator heat exchange module is in the second working mode; When ΔT2>0 and ΔT3≤0, the passenger cabin has no cooling demand, the refrigerator has cooling demand, and the refrigerator heat exchange module is in the third working mode; When ΔT2>0 and ΔT3>0, both the refrigerator and the passenger compartment have cooling requirements, and the refrigerator heat exchange module is in the fourth working mode.

6. The control method for a thermal management system of a vehicle according to claim 5, characterized in that: The refrigerator heat exchange module also includes a direct heat exchanger, an indirect heat exchanger and a cold storage material heat exchanger. The direct heat exchanger and the indirect heat exchanger are connected in series to form a refrigerant flow path. The cold storage material piece is suitable for heat exchange with at least one of the indirect heat exchanger and the cold storage material heat exchanger. When the refrigerator has a cooling demand, at least one of the direct heat exchanger and the cold storage material piece is cooled.

7. The control method for a thermal management system of a vehicle according to claim 6, characterized in that: The refrigerator includes an air duct and a cold storage material accommodating chamber, the direct heat exchanger and the cold storage material heat exchanger are both arranged in the air duct, a fan is provided in the air duct, the cold storage material piece and the indirect heat exchanger are both arranged in the cold storage material accommodating chamber, the cold storage material heat exchanger is communicated with the cold storage material accommodating chamber, and a cold storage circuit is provided between the cold storage material heat exchanger and the cold storage material accommodating chamber.

8. The control method for a thermal management system of a vehicle according to claim 7, characterized in that: In the fourth working mode, When the cold storage material has cold capacity and the refrigerator heat exchange module is in a cold storage material refrigeration state, the refrigerant flow path is closed and the fan and the cold storage circuit are turned on; When the cold storage material has insufficient cooling capacity and the refrigerator heat exchange module is in a direct heat exchanger temperature maintenance state, the refrigerant flow path and the fan are opened, and the cold storage circuit is closed.

9. The control method for a thermal management system of a vehicle according to claim 7, characterized in that: In the first working mode, When the cold storage material has no energy storage demand, closing the refrigerant flow path, the fan and the cold storage circuit; When the cold storage material has a need to store energy, the fan is turned off, and the refrigerant flow path and the cold storage circuit are turned on.

10. The control method for a thermal management system of a vehicle according to claim 7, characterized in that: In the third working mode, the refrigerant flow path and the fan are opened, and the cold storage circuit is closed.

11. The control method for a thermal management system of a vehicle according to claim 7, characterized in that: In the second working mode, the refrigerant flow path, the fan and the cold storage circuit are closed.

12. A thermal management system, characterized in that: A control method for a thermal management system of a vehicle is adopted according to any one of claims 1 to 11.

13. A vehicle, characterized in that: Comprising a thermal management system according to claim 12.

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