Refrigerant loop, thermal management system, control method and vehicle

Abstract

The invention relates to a refrigerant loop, a heat management system, a control method and a vehicle and relates to the technical field of air conditioners, and the refrigerant loop comprises a compressor, a condenser, a first flow regulating valve, a heat exchanger, a second flow regulating valve, an evaporator, a one-way valve, a stop valve, an evaporation coil and a gas-liquid separator; the first end of the compressor is connected with the first end of the condenser, the second end of the condenser is connected with the first end of an evaporation coil in the refrigerator through the first flow regulating valve, the heat exchanger, the second flow regulating valve, the evaporator and the stop valve, and the second end of the evaporation coil is connected with the second end of the compressor through the gas-liquid separator. According to the vehicle-mounted refrigerator, the vehicle-mounted refrigerator is coupled with the vehicle-mounted thermal management system, refrigeration of the vehicle-mounted refrigerator is achieved through the refrigerant loop in the vehicle-mounted thermal management system, so that components such as a compressor and a condenser in the vehicle-mounted refrigerator are omitted, the cost and the weight of the vehicle-mounted refrigerator are reduced, and the noise problem of the vehicle-mounted refrigerator in a vehicle can be obviously solved.

Description

TECHNICAL FIELD

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

[0002] The air conditioning refrigeration or heating function is provided in the thermal management system of an automobile, and the thermal management system adopts a direct heat pump system or an indirect heat pump system.

[0003] At present, whether it is a single air conditioning system of a current new energy automobile, or a more complex heat pump system, or a pure electric heat pump system architecture, it is usually two completely independent parallel systems with a vehicle-mounted refrigerator, and the vehicle-mounted refrigerator contains independent components such as a compressor and a condenser. However, this will cause the cost and weight of the vehicle-mounted refrigerator to increase, and the vehicle-mounted refrigerator is usually placed in the passenger cabin, and these components will also produce obvious noise when running, affecting the comfort of the passengers in the cabin. SUMMARY

[0004] Therefore, the present application provides a refrigerant circuit, a thermal management system, a control method and a vehicle for a vehicle, which mainly aims to improve the technical problems that the cost and weight of the vehicle-mounted refrigerator increase and obvious noise is also produced in the prior art.

[0005] In a first aspect, the present application provides a refrigerant circuit, comprising: a compressor, a condenser, a first flow regulating valve, a heat exchanger, a second flow regulating valve, an evaporator, a check valve, a stop valve, an evaporative coil and a gas-liquid separator;

[0006] A first end of the compressor is connected to a first end of the condenser, a second end of the condenser is connected to a first end of the first flow regulating valve, a second end of the first flow regulating valve is connected to a first end of the heat exchanger, a second end of the heat exchanger is connected to a first end of the second flow regulating valve, a second end of the second flow regulating valve is connected to a first end of the evaporator, a second end of the evaporator is connected to a first end of the check valve, a second end of the check valve is connected to a first end of the stop valve, a second end of the stop valve is connected to a first end of the evaporative coil, a second end of the evaporative coil is connected to a first end of the gas-liquid separator, and a second end of the gas-liquid separator is connected to a second end of the compressor.

[0007] The evaporative coil is arranged in the vehicle-mounted refrigerator and is used for refrigerating the vehicle-mounted refrigerator.

[0008] In a second aspect, the present application provides a thermal management system, comprising: the refrigerant circuit according to the first aspect and a cooling liquid circuit, wherein the refrigerant circuit is coupled to the cooling liquid circuit.

[0009] In a third aspect, the application provides a heat management system control method applied to the heat management system of the second aspect, comprising:

[0010] In response to the control instruction of the heat management system, the compressor in the refrigerant circuit is controlled to discharge refrigerant and the electronic expansion valve is opened;

[0011] The target electronic water pump in the cooling liquid circuit is controlled to operate, and the target electronic expansion valve in the cooling liquid circuit is opened, wherein the target electronic water pump comprises one or more of the first electronic water pump and the second electronic water pump, and the target electronic expansion valve comprises one or more of the first flow regulating valve, the second flow regulating valve, the third flow regulating valve, the fourth flow regulating valve, the stop valve, the electronic three-way valve and the electronic four-way valve.

[0012] In a fourth aspect, the application provides a vehicle comprising the heat management system of the second aspect.

[0013] By means of the above technical solution, the application provides a refrigerant circuit for a vehicle, a heat management system, a control method and a vehicle, wherein the refrigerant circuit comprises a compressor, a condenser, a first flow regulating valve, a heat exchanger, a second flow regulating valve, an evaporator, a check valve, a stop valve, an evaporative coil and a gas-liquid separator; specifically, the first end of the compressor is connected with the first end of the condenser, the second end of the condenser is connected with the first end of the first flow regulating valve, the second end of the first flow regulating valve is connected with the first end of the heat exchanger, the second end of the heat exchanger is connected with the first end of the second flow regulating valve, the second end of the second flow regulating valve is connected with the first end of the evaporator, the second end of the evaporator is connected with the first end of the check valve, the second end of the check valve is connected with the first end of the stop valve, the second end of the stop valve is connected with the first end of the evaporative coil, the second end of the evaporative coil is connected with the first end of the gas-liquid separator, and the second end of the gas-liquid separator is connected with the second end of the compressor; wherein the evaporative coil is arranged in the vehicle refrigerator for refrigeration in the vehicle refrigerator. Compared with the prior art, the application designs a new refrigerant circuit for a vehicle, which couples the vehicle refrigerator with the whole vehicle air conditioning system, uses the refrigerant circuit in the whole vehicle air conditioning system to realize refrigeration of the vehicle refrigerator, saves the compressor, condenser and other components in the vehicle refrigerator, thereby saving the cost and weight of the vehicle refrigerator, and significantly improving the noise problem of the vehicle refrigerator in the vehicle, and improving the comfort of the passengers in the cabin.

[0014] The above description is only a summary of the technical solutions of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application.

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings required to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

[0017] Figure 1 A structural schematic diagram of a thermal management system provided by an embodiment of the present application is shown;

[0018] Figure 2 A structural schematic diagram of a vehicle-mounted refrigerator provided by an embodiment of the present application is shown;

[0019] Figure 3 A flowchart of a thermal management system control method provided by an embodiment of the present application is shown;

[0020] Figure 4 A schematic diagram of a thermal management system provided by an embodiment of the present application in a kind of operation mode is shown;

[0021] Figure 5 A schematic diagram of a thermal management system provided by an embodiment of the present application in a kind of operation mode is shown;

[0022] Figure 6 A schematic diagram of a thermal management system provided by an embodiment of the present application in a kind of operation mode is shown;

[0023] Figure 7 A schematic diagram of a thermal management system provided by an embodiment of the present application in a kind of operation mode is shown.

[0024] Reference signs

[0025] Compressor 1101; condenser 1102; first flow regulating valve 1103; heat exchanger 1104; second flow regulating valve 1105; evaporator 1106; one-way valve 1107; stop valve 1108; evaporating coil 1109; gas-liquid separator 1110; third flow regulating valve 1111; fourth flow regulating valve 1112; cooler 1113; refrigerant device 1114; blower 1115; first PT sensor 1116; second PT sensor 1117; third PT sensor 1118; fourth PT sensor 1119; fifth PT sensor 1120; sixth PT sensor 1121; electronic four-way valve 1201; first electronic water pump 1202; battery 1203; second electronic water pump 1204; motor and control integrated unit 1205; radiator 1206; electronic three-way valve 1207; first water temperature sensor 1208; second water temperature sensor 1209. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objectives, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0027] In order to improve the technical problems of the existing technology that the cost and weight of the vehicle refrigerator increase and the noise is obvious, the present embodiment provides a refrigerant circuit 11 for a vehicle. Figure 1 As shown, the refrigerant circuit 11 includes: a compressor 1101, a condenser 1102, a first flow regulating valve 1103, a heat exchanger 1104, a second flow regulating valve 1105, an evaporator 1106, a one-way valve 1107, a stop valve 1108, an evaporating coil 1109 and a gas-liquid separator 1110; the first end of the compressor 1101 is connected to the first end of the condenser 1102, the second end of the condenser 1102 is connected to the first end of the first flow regulating valve 1103, the second end of the first flow regulating valve 1103 is connected to the first end of the heat exchanger 1104, and the second end of the heat exchanger 1104 is connected to the second flow regulating valve The first end of the second flow regulating valve 1105 is connected, the second end of the second flow regulating valve 1105 is connected to the first end of the evaporator 1106, the second end of the evaporator 1106 is connected to the first end of the one-way valve 1107, the second end of the one-way valve 1107 is connected to the first end of the stop valve 1108, the second end of the stop valve 1108 is connected to the first end of the evaporating coil 1109, the second end of the evaporating coil 1109 is connected to the first end of the gas-liquid separator 1110, and the second end of the gas-liquid separator 1110 is connected to the second end of the compressor 1101; wherein, the evaporating coil 1109 is arranged in the vehicle refrigerator for cooling the vehicle refrigerator.

[0028] In some examples, the vehicle air conditioning system in the embodiment is coupled with the vehicle refrigerator by adopting the mode of connecting the evaporator in the vehicle air conditioning system with the vehicle refrigerator in series, wherein the evaporator 1106 can achieve the purpose of refrigerating the passenger compartment and the vehicle refrigerator by exchanging heat with the cooling liquid; the condenser 1102 can convert the high-temperature and high-pressure refrigerant pumped out of the compressor 1101 from a gaseous state to a liquid state, so that the liquefied refrigerant can continue to circulate in the system, and can also achieve the purpose of heating the passenger compartment by exchanging heat with the refrigerant; the gas-liquid separator 1110 is mainly used for separating gaseous refrigerant and liquid refrigerant, and can also be used for storing refrigerant.

[0029] Compared with the prior art, the embodiment proposes a refrigerant circuit 11, as shown in Figure 1 The refrigerant circuit 11 in the thermal management system of the application is obtained in series by the compressor 1101, the condenser 1102, the first flow regulating valve 1103, the heat exchanger 1104, the second flow regulating valve 1105, the evaporator 1106, the one-way valve 1107, the stop valve 1108, the evaporative coil 1109, and the gas-liquid separator 1110. In this way, by coupling the vehicle refrigerator with the vehicle air conditioning system, the refrigeration demand of the vehicle refrigerator is realized by using the components such as the compressor and the condenser in the vehicle air conditioning thermal management system, which reduces the cost, weight and space demand of the vehicle refrigerator, and also reduces the power consumption and noise problem caused by the independent compressor in the vehicle refrigerator, and improves the energy efficiency of the vehicle air conditioning thermal management system.

[0030] Further, as a refinement and extension of the above embodiment, as shown in Figure 1 The refrigerant circuit 11 can further include: a third flow regulating valve 1111; a first intermediate port is arranged in the pipeline between the one-way valve 1107 and the stop valve 1108, a second intermediate port is arranged in the pipeline between the evaporative coil 1109 and the gas-liquid separator 1110, and the third flow regulating valve 1111 is arranged between the first intermediate port and the second intermediate port.

[0031] For example, since the load of the vehicle refrigerator is relatively small, only a small amount of refrigerant needs to flow through the vehicle refrigerator, and the flow regulation and matching of the refrigerant can be realized by connecting a bypass third flow regulating valve 1111 in parallel with the vehicle refrigerator system.

[0032] Optionally, the refrigerant circuit 11 can further comprise: a fourth flow regulating valve 1112 and a chiller 1113; a third intermediate port is arranged in the pipeline between the second flow regulating valve 1105 and the heat exchanger 1104, the fourth flow regulating valve 1112 and the chiller 1113 are arranged between the first intermediate port and the third intermediate port, the second end of the heat exchanger 1104 is connected to the first end of the fourth flow regulating valve 1112, the second end of the fourth flow regulating valve 1112 is connected to the first end of the chiller 1113, and the second end of the chiller 1113 is connected to the first end of the stop valve 1108.

[0033] In some examples, the fourth flow regulating valve 1112 is mainly used to regulate the flow of refrigerant into the chiller 1113, and the chiller 1113 is mainly used to cool and heat the battery 1203 in the cooling liquid circuit 12.

[0034] Optionally, the vehicle-mounted refrigerator can further comprise: a carrier refrigerant device 1114 and a blower 1115; the evaporating coil 1109 is arranged between the carrier refrigerant device 1114 and the blower 1115, and the carrier refrigerant device 1114 and the blower 1115 are used to cool the vehicle-mounted refrigerator when the compressor 1101 in the refrigerant circuit 11 stops working.

[0035] For example, in the coupling system of the vehicle-mounted refrigerator and the whole-vehicle air conditioning thermal management system, the compressor 1101 of the whole-vehicle air conditioner has strong refrigeration capacity, and even when the compressor 1101 runs at the minimum speed, its refrigeration capacity is much greater than the refrigeration demand of the refrigerator, which causes the compressor 1101 to frequently start and stop when it only serves the refrigerator for refrigeration in the working condition that the vehicle is stationary and the air conditioner is not turned on, thereby affecting the service life of the compressor 1101. Therefore, a carrier refrigerant device 1114 is arranged in the vehicle-mounted refrigerator to increase the load of the refrigerator, so that the carrier refrigerant can provide refrigeration capacity for the refrigerator when the compressor 1101 stops working. Figure 2 As shown in the figure, the vehicle-mounted refrigerator mainly comprises an evaporating coil 1109, a blower 1115, a carrier refrigerant device 1114, a vehicle-mounted storage space, and a corresponding circulating air duct, etc. The circulating air is cooled by the low-temperature refrigerant flowing in the evaporating coil 1109, the cooled air cools the carrier refrigerant, and then cools the space of the vehicle-mounted refrigerator through the circulating air duct, and then returns to the blower 1115 through the circulating air duct to complete the circulation of the cooled air. When the refrigerant in the evaporating coil 1109 does not flow and loses the refrigeration function, the vehicle-mounted refrigerator can release cold energy through the carrier refrigerant to reduce the frequent start and stop of the compressor 1101. Through the combination of natural circulation air and the carrier refrigerant device 1114, especially in the high-temperature exposure working condition of the vehicle in summer, the risk of loss or weakening of the refrigeration function of the vehicle-mounted refrigerator is avoided.

[0036] In some examples, the refrigerant circuit 11 can further include a first PT sensor 1116, a second PT sensor 1117, a third PT sensor 1118, a fourth PT sensor 1119, a fifth PT sensor 1120, and a sixth PT sensor 1121. The PT sensor can detect the temperature data of the location where it is located in real time, and convert it into an electrical signal and record it for further data processing, analysis and control system decision-making. In this embodiment, the PT sensor can be used to monitor the temperature of the components such as the compressor 1101 and the electronic expansion valve in the refrigerant circuit 11, so that the control system controls these components according to the temperature data.

[0037] Further, based on the above-mentioned refrigerant circuit 11, the present embodiment further proposes a thermal management system, comprising the refrigerant circuit 11 and the coolant circuit 12, wherein the refrigerant circuit 11 is coupled with the coolant circuit 12.

[0038] Optionally, the coolant circuit 12 includes an electronic four-way valve 1201, a first electronic water pump 1202, a battery 1203; a third end of the cooler 1113 is connected with a first end of the electronic four-way valve 1201, a second end of the electronic four-way valve 1201 is connected with a first end of the first electronic water pump 1202, a second end of the first electronic water pump 1202 is connected with a first end of the battery 1203, and a second end of the battery 1203 is connected with a fourth end of the cooler 1113.

[0039] In this embodiment, in order to better meet the different requirements of heating and cooling the battery 1203 and the air conditioner temperature, different battery 1203 temperature adjustment needs to be realized, and by adopting a relatively independent first electronic water pump 1202 and an electronic four-way valve 1201, the temperature of the battery 1203 can be adjusted through the cooler 1113.

[0040] Optionally, the coolant circuit 12 can further include a second electronic water pump 1204, a motor and control all-in-one machine 1205, a radiator 1206, and an electronic three-way valve 1207; a third end of the electronic four-way valve 1201 is connected with a first end of the second electronic water pump 1204, a second end of the second electronic water pump 1204 is connected with a first end of the motor and control all-in-one machine 1205, a second end of the motor and control all-in-one machine 1205 is connected with a first end of the radiator 1206, a second end of the radiator 1206 is connected with a first end of the electronic three-way valve 1207, a second end of the electronic three-way valve 1207 is connected with a fourth end of the electronic four-way valve 1201, and a third end of the electronic three-way valve 1207 is connected in a pipeline between the motor and control all-in-one machine 1205 and the radiator 1206.

[0041] Exemplarily, the motor and control integrated machine 1205 can be cooled and waste heat recovered through a radiator 1206, and the series-parallel operation and corresponding mode switching of the battery 1203 sub-circuit and the motor and control integrated machine 1205 sub-circuit can be achieved through the electronic four-way valve 1201.

[0042] In some examples, the cooling liquid circuit 12 can further include a first water temperature sensor 1208 and a second water temperature sensor 1209, which are configured to obtain the temperature of the cooling liquid in the motor and control integrated machine 1205 sub-circuit, so as to accurately control the corresponding heat exchange.

[0043] Further, in order to illustrate the processing process of the above-mentioned thermal management system, the embodiment also provides a control method, as shown in the figure, which includes: Figure 3

[0044] Step 201, in response to the control instruction of the thermal management system, the compressor in the refrigerant circuit is controlled to discharge refrigerant and the electronic expansion valve is opened.

[0045] In some examples, the control instruction of the thermal management system can include the opening instruction of the air conditioner and refrigerator refrigeration mode, the opening instruction of the single air conditioner refrigeration mode, the opening instruction of the single refrigerator refrigeration mode, and the opening instruction of the air conditioner heating and refrigerator refrigeration mode, etc.

[0046] Step 202, control the target electronic water pump in the cooling liquid circuit to run, and open the target electronic expansion valve in the cooling liquid circuit.

[0047] Among them, the target electronic water pump includes one or more of the first electronic water pump 1202 and the second electronic water pump 1204, and the target electronic expansion valve includes one or more of the first flow regulating valve 1103, the second flow regulating valve 1105, the third flow regulating valve 1111, the fourth flow regulating valve 1112, the stop valve 1108, the electronic three-way valve 1207 and the electronic four-way valve 1201. The specific control mode of the target electronic water pump and the target electronic expansion valve in different modes is as follows:

[0048] In some examples, the thermal management system can control the compressor 1101 in the refrigerant circuit 11 to discharge refrigerant and open the electronic expansion valve in response to the opening instruction of the air conditioner and refrigerator refrigeration mode; and control the first electronic water pump 1202 and the second electronic water pump 1204 in the cooling liquid circuit 12 to run, open the first flow regulating valve 1103, the second flow regulating valve 1105, the third flow regulating valve 1111, the fourth flow regulating valve 1112 and the stop valve 1108, the electronic three-way valve 1207 opens the first end and the second end, and the electronic four-way valve 1201 opens the first end, the second end, the third end and the fourth end.

[0049] ​For example, Figure 4 As shown, in the air conditioning and refrigerator cooling mode, the compressor 1101 discharges high-temperature and high-pressure refrigerant gas which is condensed into liquid refrigerant through the condenser 1102 in the vehicle's air-conditioning box (at this time, the condenser 1102 does not participate in heat exchange and only serves as a channel function), passes through the first flow regulating valve 1103 with a full-pass function and the outdoor heat exchanger 1104, and then passes through the second flow regulating valve 1105 and the fourth flow regulating valve 1112 to throttle the evaporator 1106 and the cooler 1113 in the air-conditioning box respectively, and then becomes a low-temperature and low-pressure two-phase refrigerant to cool the air conditioner and / or cool the battery 1203, wherein the opening size of the fourth flow regulating valve 1112 can be adjusted or closed according to whether the battery 1203 needs to be cooled.

[0050] In this embodiment, after the refrigerant passes through the air-conditioning evaporator 1106, most of the liquid refrigerant is evaporated into gas, and a small amount of liquid refrigerant enters the evaporating coil 1109 in the refrigerator to evaporate and cool the refrigerator. At this time, the pressure of the two-phase refrigerant in the vehicle refrigerator is lower than the pressure of the evaporator 1106 in the vehicle air-conditioning, so that the cooling temperature in the vehicle refrigerator can be lower than the cooling temperature in the air-conditioning evaporator 1106, thereby meeting the different evaporation temperature requirements of the car air-conditioning and the refrigerator.

[0051] In some examples, the cooling demand of a vehicle refrigerator is much lower than that of a vehicle air conditioner, and excess refrigerant can be bypassed through a third flow control valve 1111 to adjust the vehicle refrigerator's cooling capacity. To further match the load of the vehicle refrigerator with that of the vehicle's compressor 1101, a built-in refrigerant device 1114 (the type and form of the refrigerant are selected and matched as needed) is built into the vehicle refrigerator to increase the refrigerator's cooling demand. Intermittent cooling of the vehicle refrigerator is achieved by controlling the stop valve 1108 in front of the vehicle refrigerator's evaporator coil 1109. While the stop valve 1108 is closed, the air inside the vehicle refrigerator can be cooled by cooling the refrigerant, achieving continuous cooling of the vehicle refrigerator.

[0052] In some embodiments, the thermal management system can respond to the start instruction of the single air-conditioning cooling mode to control the compressor 1101 in the refrigerant circuit 11 to discharge the refrigerant and open the electronic expansion valve; and control the first electronic water pump 1202 and the second electronic water pump 1204 in the coolant circuit 12 to operate, open the first flow regulating valve 1103, the second flow regulating valve 1105, the third flow regulating valve 1111 and the fourth flow regulating valve 1112, the electronic three-way valve 1207 opens the first end and the second end, and the electronic four-way valve 1201 opens the first end, the second end, the third end and the fourth end.

[0053] For example, Figure 5As shown, in the single air-conditioning cooling mode, the vehicle refrigerator enters the shutdown or insulation state, and the refrigeration function of the vehicle refrigerator can be turned off by closing the stop valve 1108 in front of the evaporator coil 1109 of the vehicle refrigerator; at this time, all the refrigerant flowing out of the evaporator 1106 and / or the cooler 1113 passes through the third flow regulating valve 1111 and returns to the gas-liquid separator 1110 and the compressor 1101 to realize circulation.

[0054] In some embodiments, the thermal management system can respond to the start instruction of the single refrigerator refrigeration mode, control the compressor 1101 in the refrigerant circuit 11 to discharge the refrigerant and open the electronic expansion valve; and control the second electronic water pump 1204 in the coolant circuit 12 to operate, open the first flow regulating valve 1103, the fourth flow regulating valve 1112 and the stop valve 1108, the electronic three-way valve 1207 opens the first end and the second end, and the electronic four-way valve 1201 opens the first end, the second end, the third end and the fourth end.

[0055] For example, Figure 6 As shown, in single-refrigerator cooling mode, the vehicle's air conditioner is off. The entire thermal management system operates similarly to the air conditioner and refrigerator cooling mode, except that in this mode, the first electronic water pump 1202 and the second flow control valve 1105 before the air conditioner evaporator 1106 are closed. For example, compressor 1101 operates at minimum speed. The discharged high-temperature, high-pressure refrigerant, after condensation by outdoor condenser 1102 and full flow control valve 1103, is throttled by fourth flow control valve 1112 before cooler 1113 (at this point, the water in cooler 1113 does not flow and does not cool battery 1203). The refrigerant then passes entirely through stop valve 1108, and the third flow control valve 1111, which bypasses the refrigerant, is closed. By starting and stopping the refrigerant brine device and compressor 1101 in this embodiment, energy matching can be achieved for the vehicle refrigerator's cooling needs.

[0056] In some embodiments, the thermal management system can respond to the start instructions of the air conditioner heating and refrigerator cooling modes to control the compressor 1101 in the refrigerant circuit 11 to discharge the refrigerant and open the electronic expansion valve; and control the operation of the first electronic water pump 1202 and the second electronic water pump 1204 in the coolant circuit 12, the first flow regulating valve 1103, the third flow regulating valve 1111, the fourth flow regulating valve 1112 and the stop valve 1108, the electronic three-way valve 1207 to open the second end and the third end, and the electronic four-way valve 1201 to open the first end, the second end, the third end and the fourth end.

[0057] For example, Figure 7As shown, in the air conditioner heating and refrigerator refrigeration mode, the compressor 1101 discharges refrigerant that is heat-released in the indoor condenser 1102 to become liquid refrigerant, passes through the throttling function of the first flow regulating valve 1103, then passes through the outdoor heat exchanger 1104 (at this time, the heat exchanger 1104 is equivalent to an evaporator, and absorbs heat from the ambient air), then passes through the fourth flow regulating valve 1112 (at this time, the fourth flow regulating valve 1112 is in full open mode), then passes through the third flow regulating valve 1111 and the refrigerator stop valve 1108 (at this time, the stop valve 1108 is in an open state, and the low-temperature and low-pressure refrigerant evaporates in the evaporating coil 1109 to absorb the heat of the air and the refrigerant in the refrigerator to achieve refrigeration), and finally the refrigerant returns to the gas-liquid separator 1110 and the compressor 1101, completing the entire cycle.

[0058] At present, the compressor in the vehicle-mounted refrigerator in the prior art is placed in the vehicle, which will generate obvious noise in the vehicle, affecting the comfort of the passengers in the cabin; the condenser of the vehicle-mounted refrigerator is also in the vehicle, and the heat load generated during the refrigeration process of the refrigerator will be completely transferred to the passenger cabin, and the whole vehicle thermal management system is needed to cool this part of the heat load, resulting in a decrease in the energy efficiency of the whole vehicle. By applying the coupling system of the vehicle-mounted refrigerator and the whole vehicle air conditioner thermal management system provided in the embodiment, the compressor, condenser and other components in the whole vehicle air conditioner thermal management system are used to realize the refrigeration demand of the vehicle-mounted refrigerator, reducing the cost, weight and space demand of the vehicle-mounted refrigerator, and also reducing the power consumption and noise problem of the independent compressor in the vehicle-mounted refrigerator. At the same time, since the condenser in the whole vehicle thermal management system is used, the vehicle-mounted refrigerator will not release heat to the vehicle through its own condenser as in the original way, thereby reducing the heat load of the vehicle-mounted refrigerator on the automobile air conditioner, improving the refrigeration energy efficiency, and especially reducing the risk of loss or weakening of the refrigeration function of the vehicle-mounted refrigerator under the high-temperature exposure and other parking conditions in summer.

[0059] Further, the embodiment of the application also provides a vehicle, which can specifically include: Figures 1 to 7 a thermal management system as shown. The vehicle can be a new energy vehicle or a traditional vehicle, etc.

[0060] It has to be noted that, in the present document, relational terms are intended only to convey a possible relationship between elements or

[0061] The above description is merely that of the specific embodiments of the application and as such is not to be taken in a limiting sense. Various modifications and co nti n uations will be evident to those skilled in the art that do not depart from the spirit and scope of the application as defined by the appended claims. The specific embodiments presented, therefore, are not to be considered in a limiting sense, but are presented for purposes of illustration only in conformance with the above-stated description. It is not the intention to limit the application to the described embodiments but rather the intention is to cover all modifications and alternatives coming within the spirit and scope of the claims.

Claims

1. A refrigerant circuit, characterized by, The refrigerant circuit comprises a compressor, a condenser, a first flow regulating valve, a heat exchanger, a second flow regulating valve, an evaporator, a one-way valve, a stop valve, an evaporative coil and a gas-liquid separator. The first end of the compressor is connected to the first end of the condenser, the second end of the condenser is connected to the first end of the first flow regulating valve, the second end of the first flow regulating valve is connected to the first end of the heat exchanger, the second end of the heat exchanger is connected to the first end of the second flow regulating valve, the second end of the second flow regulating valve is connected to the first end of the evaporator, the second end of the evaporator is connected to the first end of the one-way valve, the second end of the one-way valve is connected to the first end of the stop valve, the second end of the stop valve is connected to the first end of the evaporative coil, the second end of the evaporative coil is connected to the first end of the gas-liquid separator, and the second end of the gas-liquid separator is connected to the second end of the compressor. The evaporative coil is arranged in the vehicle-mounted refrigerator to cool the vehicle-mounted refrigerator. The refrigerant circuit further comprises a third flow regulating valve.

2. The refrigerant circuit according to claim 1, characterized in that A first intermediate port is arranged in the pipeline between the one-way valve and the stop valve, a second intermediate port is arranged in the pipeline between the evaporative coil and the gas-liquid separator, and the third flow regulating valve is arranged between the first intermediate port and the second intermediate port. The refrigerant circuit further comprises a fourth flow regulating valve and a cooler.

3. The refrigerant circuit according to claim 2, characterized in that A third intermediate port is arranged in the pipeline between the second flow regulating valve and the heat exchanger, the fourth flow regulating valve and the cooler are arranged between the first intermediate port and the third intermediate port, the second end of the heat exchanger is connected to the first end of the fourth flow regulating valve, the second end of the fourth flow regulating valve is connected to the first end of the cooler, and the second end of the cooler is connected to the first end of the stop valve. The vehicle-mounted refrigerator further comprises a carrier refrigerant device and a blower.

4. The refrigerant circuit according to claim 1, characterized in that The evaporative coil is arranged between the carrier refrigerant device and the blower, and the carrier refrigerant device and the blower are used to cool the vehicle-mounted refrigerator when the compressor in the refrigerant circuit stops working. The cooling liquid circuit comprises an electronic four-way valve, a first electronic water pump, a battery, a third end of the cooler is connected to the first end of the electronic four-way valve, the second end of the electronic four-way valve is connected to the first end of the first electronic water pump, the second end of the first electronic water pump is connected to the first end of the battery, and the second end of the battery is connected to the fourth end of the cooler.

5. A thermal management system characterized by, The cooling liquid circuit further comprises a second electronic water pump, a motor and a control all-in-one machine, a radiator and an electronic three-way valve.

6. The thermal management system of claim 5, wherein, ​ ​ 7. The thermal management system of claim 6, wherein, ​ The third end of the electronic four-way valve is connected with the first end of the second electronic water pump, the second end of the second electronic water pump is connected with the first end of the motor and control integrated machine, the second end of the motor and control integrated machine is connected with the first end of the radiator, the second end of the radiator is connected with the first end of the electronic three-way valve, the second end of the electronic three-way valve is connected with the fourth end of the electronic four-way valve, and the third end of the electronic three-way valve is connected with the pipeline between the motor and control integrated machine and the radiator.

8. A control method of a thermal management system, characterized by, The method is applied to the thermal management system of claim 7, and the method comprises: In response to a control instruction of the thermal management system, a compressor in a refrigerant circuit is controlled to discharge refrigerant and an electronic expansion valve is opened; A target electronic water pump in a cooling liquid circuit is controlled to operate, and a target electronic expansion valve in the cooling liquid circuit is opened, wherein the target electronic water pump comprises one or more of a first electronic water pump and a second electronic water pump, and the target electronic expansion valve comprises one or more of a first flow regulating valve, a second flow regulating valve, a third flow regulating valve, a fourth flow regulating valve, a stop valve, an electronic three-way valve and an electronic four-way valve.

9. The method of claim 8, wherein, The response to the control instruction of the thermal management system, the control of the compressor in the refrigerant circuit to discharge refrigerant and the opening of the electronic expansion valve, comprises: In response to an opening instruction of an air conditioner and refrigerator refrigeration mode, the compressor in the refrigerant circuit is controlled to discharge refrigerant and the electronic expansion valve is opened; The control of the target electronic water pump in the cooling liquid circuit to operate and the opening of the target electronic expansion valve in the cooling liquid circuit, comprises: The first electronic water pump and the second electronic water pump in the cooling liquid circuit are controlled to operate, the first flow regulating valve, the second flow regulating valve, the third flow regulating valve, the fourth flow regulating valve and the stop valve are opened, the electronic three-way valve opens the first end and the second end, and the electronic four-way valve opens the first end, the second end, the third end and the fourth end.

10. The method of claim 8, wherein, The response to the control instruction of the thermal management system, the control of the compressor in the refrigerant circuit to discharge refrigerant and the opening of the electronic expansion valve, comprises: In response to an opening instruction of a single air conditioner refrigeration mode, the compressor in the refrigerant circuit is controlled to discharge refrigerant and the electronic expansion valve is opened; The control of the target electronic water pump in the cooling liquid circuit to operate and the opening of the target electronic expansion valve in the cooling liquid circuit, comprises: The first electronic water pump and the second electronic water pump in the cooling liquid circuit are controlled to operate, the first flow regulating valve, the second flow regulating valve, the third flow regulating valve and the fourth flow regulating valve are opened, the electronic three-way valve opens the first end and the second end, and the electronic four-way valve opens the first end, the second end, the third end and the fourth end.

11. The method of claim 8, wherein, The response to the control instruction of the thermal management system, the control of the compressor in the refrigerant circuit to discharge refrigerant and the opening of the electronic expansion valve, comprises: In response to an opening instruction of a single refrigerator refrigeration mode, the compressor in the refrigerant circuit is controlled to discharge refrigerant and the electronic expansion valve is opened; The control of the target electronic water pump in the cooling liquid circuit to operate and the opening of the target electronic expansion valve in the cooling liquid circuit, comprises: Controlling the second electronic water pump in the cooling liquid circuit to operate, opening the first flow regulating valve, the fourth flow regulating valve and the stop valve, the electronic three-way valve opening the first end and the second end, and the electronic four-way valve opening the first end, the second end, the third end and the fourth end.

12. The method according to claim 8, characterized in that The control instruction of the heat management system includes: The control instruction of the heat management system includes: The control instruction of the heat management system includes: The control instruction of the heat management system includes:

13. A vehicle characterized by comprising: Controlling the first electronic water pump and the second electronic water pump in the cooling liquid circuit to operate, the first flow regulating valve, the third flow regulating valve, the fourth flow regulating valve and the stop valve, the electronic three-way valve opening the second end and the third end, and the electronic four-way valve opening the first end, the second end, the third end and the fourth end. The heat management system includes: The heat management system includes: The heat management system includes: The heat management system includes:

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