Cooling liquid loop, thermal management system, control method and vehicle

Abstract

The invention discloses a cooling liquid loop, a heat management system, a control method and a vehicle, and belongs to the field of vehicles. The cooling liquid loop comprises a refrigerator assembly, a battery cooler and a battery system, the refrigerator assembly comprises a refrigerator evaporator, the refrigerator evaporator and the battery system are both connected to the battery cooler, and the battery system is connected with the refrigerator evaporator in parallel. In the application, a compressor of a refrigerator system in the vehicle can be omitted, and refrigeration of the battery system and refrigeration of the refrigerator system can be realized only through one compressor, so that the cost of the vehicle can be effectively reduced.

Description

Technical Field

[0001] This application belongs to the field of vehicles, and particularly relates to a coolant circuit, a thermal management system, a control method, and a vehicle. Background Art

[0002] With the development of technology, vehicles have become an indispensable means of transportation for people's daily travel, and thus the requirements for vehicle comfort are getting higher and higher. Generally, in order to improve vehicle comfort, an air-conditioning system, a battery system, and a refrigerator system are provided in the vehicle. The air-conditioning system has a first compressor, the battery system is connected to a battery cooler, and the battery cooler is connected to the first compressor. That is, the air-conditioning system and the battery cooler share the first compressor. The refrigerator system has a second compressor. Through the first compressor, the air-conditioning system can heat or cool the interior of the vehicle, and the battery system can be cooled. Through the second compressor, the refrigerator system can refrigerate, so that the items placed in the refrigerator system can be refrigerated. However, such a setting will increase the cost of the vehicle. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a coolant circuit, a thermal management system, a control method, and a vehicle, which can at least solve the problem of increasing the cost of the vehicle.

[0004] In a first aspect, the embodiments of this application provide a coolant circuit, which includes: a refrigerator assembly, a battery cooler, and a battery system;

[0005] The refrigerator assembly includes a refrigerator evaporator. The refrigerator evaporator and the battery system are both connected to the battery cooler, and the battery system is in parallel with the refrigerator evaporator.

[0006] Optionally, the coolant circuit further includes a first valve body assembly;

[0007] The battery system and the refrigerator evaporator are in parallel through the first valve body assembly.

[0008] Optionally, the coolant circuit further includes a first communication valve body and a second communication valve body;

[0009] The first communication valve body includes a first communication end, a second communication end, and a third communication end. The second communication valve body includes a fourth communication end, a fifth communication end, and a sixth communication end. The first communication end is connected to the battery cooler, the second communication end is connected to the liquid inlet end of the refrigerator evaporator, the third communication end is connected to one end of the battery system, the other end of the battery system is connected to the fifth communication end, and the sixth communication end is connected to the liquid outlet end of the refrigerator evaporator.

[0010] Optionally, the coolant circuit further includes a second valve body member, an electric drive system, and a low-temperature radiator;

[0011] The second valve body member includes a fifth end, a sixth end, a seventh end, and an eighth end; the liquid outlet end of the refrigerator evaporator is connected to the fifth end, the sixth end is connected to the battery cooler, the seventh end is connected to one end of the low-temperature radiator, the eighth end is connected to the electric drive system, and the electric drive system is connected to the other end of the low-temperature radiator.

[0012] Optionally, the coolant circuit further includes a second electronic water pump; the sixth end and the battery cooler are connected through the second electronic water pump.

[0013] Optionally, the coolant circuit further includes a refrigeration fan; the refrigeration fan is disposed on one side of the low-temperature radiator.

[0014] Optionally, the coolant circuit further includes a third electronic water pump; the eighth end and the electric drive system are connected through the third electronic water pump.

[0015] Optionally, the coolant circuit further includes a fourth communication valve body;

[0016] The fourth communication valve body includes a tenth communication end, an eleventh communication end, and a twelfth communication end. The tenth communication end is connected to one end of the low-temperature radiator, the eleventh communication end is connected to the electric drive system, and the twelfth communication end is connected to the seventh end.

[0017] Optionally, the refrigerator assembly further includes a first cavity and a second cavity. A cold storage cavity is provided in the first cavity, a phase change refrigerant is provided in the cold storage cavity, the refrigerator evaporator is located in the cold storage cavity, and the refrigerator evaporator is in contact with the phase change refrigerant;

[0018] There is a gap between the cold storage cavity and the second cavity. A refrigeration component is provided in the gap. The refrigeration component is respectively connected to the cold storage cavity and the second cavity. A cold air fan is provided in the first cavity, a air duct is provided in the second cavity, the cold air fan faces the air duct, and the gap communicates with the air duct and the interior of the second cavity.

[0019] Optionally, the refrigeration component includes a plurality of thermoelectric cooling elements and a plurality of first heat exchange fin assemblies. The thermoelectric cooling element has opposite first and second ends, and the first end is connected to the cold storage cavity;

[0020] The first heat exchange fin assembly is located between the semiconductor refrigeration component and the second cavity, and one end of the first heat exchange fin assembly is connected to the second end of the semiconductor refrigeration component, and the other end of the first heat exchange fin assembly is connected to the second cavity, so that the semiconductor refrigeration component is connected to the second cavity through the first heat exchange fin assembly.

[0021] In a second aspect, an embodiment of the present application provides a thermal management system, the thermal management system includes a compressor and a coolant circuit as described in any one of the above first aspects;

[0022] The battery cooler is connected to the compressor.

[0023] Optionally, the thermal management system further includes an air conditioning component;

[0024] The air conditioning component includes an air conditioning evaporator, the air conditioning evaporator is connected in parallel with the battery cooler, and the air conditioning evaporator is connected to the compressor.

[0025] Optionally, the thermal management system further includes a water-cooled condenser;

[0026] The output end of the compressor is connected to the water-cooled condenser, the water-cooled condenser is respectively connected to the air conditioning evaporator and the battery cooler, and both the water-cooled condenser and the battery cooler are connected to the input end of the compressor.

[0027] Optionally, the coolant circuit further includes a first communication valve body and a second communication valve body, and the thermal management system further includes a first valve body part, and the first valve body part includes a third end and a fourth end;

[0028] The third communication end of the first communication valve body is respectively connected to the third end and one end of the battery system, and the fourth end is connected to the fourth communication end.

[0029] Optionally, the air conditioning component further includes a heater core, and the thermal management system further includes a first valve body part, a first electronic water pump, and a high-pressure water heater;

[0030] The first valve body part includes a first end and a second end, the water-cooled condenser is connected to the high-pressure water heater, the high-pressure water heater is connected to the heater core, the heater core is connected to the first end, and the second end is connected to the first electronic water pump.

[0031] Optionally, the thermal management system further includes a first valve and a second valve;

[0032] The water-cooled condenser is connected to the air conditioning evaporator through the first valve, and the water-cooled condenser is connected to the battery cooler through the second valve.

[0033] Optionally, the thermal management system further includes a third communication valve body and a high-pressure water heater;

[0034] The third communication valve body includes a seventh communication end, an eighth communication end, and a ninth communication end. The water-cooled condenser is connected to the seventh communication end, the eighth communication end is connected to the high-pressure water heater, and the ninth communication end is connected to the low-temperature radiator.

[0035] In a third aspect, an embodiment of the present application provides a control method for a thermal management system. The thermal management system includes a coolant circuit, and the coolant circuit includes: a second valve body member, a first communication valve body, a second communication valve body, and a fourth communication valve body. The thermal management system further includes: a first valve body member, a third communication valve body, a first valve, and a second valve; the control method includes:

[0036] Determine the working mode of the thermal management system;

[0037] Based on the working mode of the thermal management system, control at least one of the first valve body member, the second valve body member, the first communication valve body, the second communication valve body, the third communication valve body, the fourth communication valve body, the first valve, and the second valve to switch.

[0038] Optionally, the controlling at least one of the first valve body member, the second valve body member, the first communication valve body, the second communication valve body, the third communication valve body, the fourth communication valve body, the first valve, and the second valve to switch based on the working mode of the thermal management system includes:

[0039] When the thermal management system is in the mode of air-conditioning refrigeration, the refrigerator assembly is working, and battery refrigeration, control both the first valve and the second valve to be in the open state, and control the first communication end of the first communication valve body to be respectively communicated with the second communication end and the third communication end of the first communication valve body, and control the fifth communication end and the sixth communication end of the second communication valve body to be communicated, control the sixth end and the seventh end of the second valve body member to be communicated, and control the fifth end and the eighth end of the second valve body member to be communicated.

[0040] Optionally, the controlling at least one of the first valve body member, the second valve body member, the first communication valve body, the second communication valve body, the third communication valve body, the fourth communication valve body, the first valve, and the second valve to switch based on the working mode of the thermal management system includes:

[0041] When the ambient temperature is greater than or equal to the preset temperature threshold, and the thermal management system is in a mode where the air conditioner is turned off, the battery does not require cooling, and the refrigerator assembly is operating, control the first valve to be in a closed state, control the second valve to be in an open state, and control the first communication end of the first communication valve body to communicate with the second communication end of the first communication valve body, and control the fifth end and the sixth end of the second valve body to communicate.

[0042] Optionally, the controlling at least one of the first valve body, the second valve body, the first communication valve body, the second communication valve body, the third communication valve body, the fourth communication valve body, the first valve, and the second valve to switch based on the operating mode of the thermal management system includes:

[0043] When the ambient temperature is less than the preset temperature threshold, and the thermal management system is in a mode where the air conditioner is turned off, the battery does not require cooling, and the refrigerator assembly is operating, control both the first valve and the second valve to be in a closed state, and control the first communication end of the first communication valve body to communicate with the second communication end of the first communication valve body, control the sixth end and the seventh end of the second valve body to communicate, control the fifth end and the eighth end of the second valve body to communicate, and control the tenth communication end of the fourth communication valve body to communicate with the twelfth communication end of the fourth communication valve body.

[0044] Optionally, the controlling at least one of the first valve body, the second valve body, the first communication valve body, the second communication valve body, the third communication valve body, the fourth communication valve body, the first valve, and the second valve to switch based on the operating mode of the thermal management system includes:

[0045] When the thermal management system is in a mode where the air conditioner is heating and the refrigerator assembly is operating, control the first valve to be in a closed state, and control the first communication end of the first communication valve body to communicate with the second communication end of the first communication valve body, control the fifth end and the eighth end of the second valve body to communicate, control the sixth end and the seventh end of the second valve body to communicate, control the tenth communication end of the fourth communication valve body to communicate with the twelfth communication end of the fourth communication valve body, control the first end and the second end of the first valve body to communicate, and control the seventh communication end and the eighth communication end of the third communication valve body to communicate.

[0046] Optionally, the controlling at least one of the first valve body, the second valve body, the first communication valve body, the second communication valve body, the third communication valve body, the fourth communication valve body, the first valve, and the second valve to switch based on the operating mode of the thermal management system includes:

[0047] When the thermal management system is in the battery heating mode, control the first valve to be in the closed state, control the seventh communication end and the eighth communication end of the third communication valve body to be communicated, and control the first end and the fourth end of the first valve body member to be communicated, control the fourth communication end and the fifth communication end of the second communication valve body to be communicated, and control the second end and the third end of the first valve body member to be communicated.

[0048] In a fourth aspect, an embodiment of the present application provides a vehicle, which includes the coolant circuit according to any one of the first aspects above, or the thermal management system according to any one of the second aspects above.

[0049] In the embodiment of the present application, by arranging that the refrigerator evaporator and the battery system are both connected to the battery cooler, and the battery system is in parallel with the refrigerator evaporator, it is equivalent to the refrigerator assembly and the battery cooler sharing the same compressor, that is, equivalent to canceling the compressor in the refrigerator system, so that the coolant flowing through the battery cooler can flow to the refrigerator evaporator, enabling the refrigerator assembly to refrigerate, that is, the compressor in the vehicle's refrigerator system can be canceled. Only through one compressor, the air-conditioning system, the battery system, and the refrigerator system of the vehicle can be refrigerated, thereby effectively reducing the cost of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram showing a thermal management system provided by an embodiment of the present application;

[0051] Figure 2 A schematic diagram showing the thermal management system in a mode where the air conditioner refrigerates, the refrigerator assembly operates, and the battery refrigerates according to an embodiment of the present application;

[0052] Figure 3 A schematic diagram showing the thermal management system in a situation where the ambient temperature is greater than or equal to a preset temperature threshold, the air conditioner is turned off, the battery does not need to be refrigerated, and the refrigerator assembly operates according to an embodiment of the present application;

[0053] Figure 4 A schematic diagram showing the thermal management system in a situation where the ambient temperature is less than the preset temperature threshold, the air conditioner is turned off, the battery does not need to be refrigerated, and the refrigerator assembly operates according to an embodiment of the present application;

[0054] Figure 5 A schematic diagram showing the thermal management system in a mode where the air conditioner heats and the refrigerator assembly operates according to an embodiment of the present application;

[0055] Figure 6 A schematic diagram showing the thermal management system in a mode of heating the battery according to an embodiment of the present application;

[0056] Figure 7 A schematic diagram showing a refrigerator assembly provided by an embodiment of the present application;

[0057] Figure 8 It shows a schematic diagram of a part of a refrigerator assembly provided by an embodiment of the present application;

[0058] Figure 9 It shows a flowchart of a control method for a thermal management system provided by an embodiment of the present application.

[0059] Reference numerals:

[0060] 001: Phase change refrigerant; 10: Compressor; 20: Refrigerator assembly; 21: Refrigerator evaporator; 22: First cavity; 23: Second cavity; 24: Refrigeration component; 25: Cold air fan; 221: Cold storage cavity; 241: Thermoelectric cooler; 242: First heat exchange fin assembly; 30: Battery cooler; 40: Air conditioning component; 41: Air conditioning evaporator; 42: Warm air core; 50: Water-cooled condenser; 60: First valve body part; 61: First end; 62: Second end; 63: Third end; 64: Fourth end; 70: First electronic water pump; 80: High-pressure water heater; 90: First communication valve body; 91: First communication end; 92: Second communication end; 93: Third communication end; 100: Second communication valve body; 101: Fourth communication end; 102: Fifth communication end; 103: Sixth communication end; 110: Battery system; 120: First valve; 130: Second valve; 140: Second valve body part; 141: Fifth end; 142: Sixth end; 143: Seventh end; 144: Eighth end; 160: Low-temperature radiator; 170: Second electronic water pump; 180: Refrigeration fan; 190: Third electronic water pump; 200: Third communication valve body; 201: Seventh communication end; 202: Eighth communication end; 203: Ninth communication end; 210: Electric drive system; 220: Fourth communication valve body; 221: Tenth communication end; 222: Eleventh communication end; 223: Twelfth communication end; 230: Gas-liquid separator. Detailed implementation manners

[0061] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, "a plurality of" means two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0062] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0063] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0064] As Figures 1 to 8 shown, the coolant circuit includes: a refrigerator assembly 20, a battery cooler 30, and a battery system 110. The refrigerator assembly 20 includes a refrigerator evaporator 21. The refrigerator evaporator 21 and the battery system 10 are both connected to the battery cooler 30, and the battery system 10 is in parallel with the refrigerator evaporator 21.

[0065] In an embodiment of the present application, by setting that the refrigerator evaporator 21 and the battery system 10 are both connected to the battery cooler 30, and the battery system 10 is in parallel with the refrigerator evaporator 21, it is equivalent to that the refrigerator assembly 20 and the battery cooler 21 share the same compressor, that is, it is equivalent to canceling the compressor 10 in the refrigerator system, so that the coolant flowing through the battery cooler 30 can flow to the refrigerator evaporator 21, enabling the refrigerator assembly 20 to refrigerate. That is, the compressor 10 in the vehicle's refrigerator system can be canceled. Only through one compressor 10, the refrigeration of the vehicle's air conditioning system, battery system, and refrigerator system can be achieved, thereby effectively reducing the cost of the vehicle.

[0066] In addition, in some embodiments, the coolant circuit further includes a first valve body assembly; the battery system 10 and the refrigerator evaporator 21 are connected in parallel through the first valve body assembly. Through such a setting, it is equivalent to connecting both the refrigerator evaporator 21 and the battery system 10 to the first valve body assembly to realize the parallel connection of the refrigerator evaporator 21 and the battery system 10. That is, by setting the first valve body assembly, it is convenient to realize the parallel connection of the refrigerator evaporator 21 and the battery system 10, so that the coolant flowing out of the battery cooler 30 can flow to the refrigerator evaporator 21 and the battery system.

[0067] In addition, in some embodiments, the first valve body assembly may include a first connecting valve body 90 and a second connecting valve body 100, the first connecting valve body 90 includes a first connecting end 91, a second connecting end 92 and a third connecting end 93, the second connecting valve body 100 includes a fourth connecting end 101, a fifth connecting end 102 and a sixth connecting end 103, the first connecting end 91 is connected to the battery cooler 30, the second connecting end 92 is connected to the liquid inlet end of the refrigerator evaporator 21, the third connecting end 93 is connected to one end of the battery system 110, the other end of the battery system 110 is connected to the fifth connecting end 102, and the sixth connecting end 103 is connected to the liquid outlet end of the refrigerator evaporator 21.

[0068] Through such an arrangement, it is equivalent to realizing the parallel connection of the evaporator 21 and the battery system 110. The first connecting end 91 of the first connecting valve body 90 and the second connecting end 92 can be switched to be connected, so that the low-temperature water flowing out of the battery cooler 30 can flow to the refrigerator evaporator 21, so that the refrigerator evaporator 21 realizes the refrigeration of the refrigerator assembly 20; the first connecting valve body 90 and the second connecting valve and the third connecting valve can also be switched to be connected at the same time, so that the low-temperature water flowing out of the battery cooler 30 can flow to the refrigerator evaporator 21 and the battery system 110, and at the same time cool the battery of the vehicle and cool the refrigerator assembly 20.

[0069] It should be noted that the first connecting valve body 90 and the second connecting valve body 100 can both be three-way valves. Of course, the first connecting valve body 90 and the second connecting valve body 100 can also be other types of valve bodies. For example, the first connecting valve body 90 and the second connecting valve body 100 are both four-way valves. In this case, only one port of the four-way valve needs to be always closed. This is not limited in the embodiments of the present application.

[0070] In addition, in some embodiments, the coolant circuit may also include a second valve body 140, an electric drive system 210 and a low-temperature radiator 160; the second valve body 140 includes a fifth end 141, a sixth end 142, a seventh end 143 and an eighth end 144; the liquid outlet end of the refrigerator evaporator 21 is connected to the fifth end 141, the sixth end 142 is connected to the battery cooler 30, the seventh end 143 is connected to one end of the low-temperature radiator 160, the eighth end 144 is connected to the electric drive system 210, and the electric drive system 210 is connected to the other end of the low-temperature radiator 160.

[0071] By such a setting, the different ends of the second valve body 140 can be controlled to be connected, so that the cooling water circulates. Specifically, the fifth end 141 of the second valve body 140 can be connected to the eighth end 144, and the sixth end 142 of the second valve body 140 can be connected to the seventh end 143, so that the cooling water flowing out from the liquid outlet of the refrigerator evaporator 21 can flow to the electric drive system 210 through the fifth end 141 and the eighth end 144 of the second valve body 140, and then flow through the electric drive system 210 to the low-temperature radiator 160, the cooling water flowing out of the low-temperature radiator 160 can flow to the second valve body 140, and flow to the battery cooler 30 through the seventh end 143 and the second sixth end of the second valve body 140, the cooling water flowing out of the battery cooler 30 can flow to the refrigerator evaporator 21, and then flow from the refrigerator evaporator 21 to the second valve body 140, so as to realize the circulation of cooling water. In addition, during the flow of cooling water, the electric drive system 210 can be cooled. That is, by providing the second valve body 140 and the low-temperature radiator 160 , the circulation of cooling water can be achieved, and the electric drive system 210 can be cooled.

[0072] It should be noted that, in the embodiment of the present application, the low-temperature radiator 160 can exchange heat with the environment.

[0073] In addition, in the embodiment of the present application, the second valve body 140 can be a four-way valve. Of course, the second valve body 140 can also be other types of valve bodies. For example, the second valve body 140 is a five-way valve. In this case, only one port of the five-way valve needs to be closed. The specific type of the second valve body is not limited in the embodiment of the present application.

[0074] In addition, in some embodiments, the coolant circuit may further include a second electronic water pump 170 ; the sixth end 142 is connected to the battery cooler 30 via the second electronic water pump 170 .

[0075] By setting the second electric water pump 170, once the second electric water pump 170 operates, it can promote the circulation of the cooling water, thus facilitating the flow of the cooling water to the battery cooler 30 and also facilitating the flow of the cooling water in the battery cooler 30 to the refrigerator evaporator 21. That is, by setting the second electric water pump 170, it can facilitate the circulation of the cooling water.

[0076] In addition, in some embodiments, the coolant circuit may further include a refrigeration fan 180; the refrigeration fan 180 is disposed on one side of the low-temperature radiator 160.

[0077] By setting the refrigeration fan 180, the refrigeration fan 180 can be made to operate, and the refrigeration fan 180 can then supply cold air to the low-temperature radiator 160, facilitating heat exchange between the low-temperature radiator 160 and the environment, thereby cooling the cooling water flowing through the low-temperature radiator 160. That is, by setting the refrigeration fan 180, it can facilitate the cooling of the cooling water flowing through the low-temperature radiator 160.

[0078] In addition, in some embodiments, the coolant circuit may further include a third electric water pump 190; the eighth end 144 and the electric drive system 210 are connected through the third electric water pump 190.

[0079] By setting the third electric water pump 190, once the third electric water pump 190 operates, it can promote the circulation of the cooling water, thus facilitating the flow of the cooling water to the electric drive system 210 and also facilitating the flow of the cooling water flowing out of the electric drive system 210 to the low-temperature radiator 160. That is, by setting the third electric water pump 190, it can facilitate the circulation of the cooling water.

[0080] In addition, in some embodiments, the coolant circuit may further include a fourth communication valve body 220; the fourth communication valve body 220 includes a tenth communication end 221, an eleventh communication end 222, and a twelfth communication end 223. The tenth communication end 221 is connected to one end of the low-temperature radiator 160, the eleventh communication end 222 is connected to the electric drive system 210, and the twelfth communication end 223 is connected to the seventh end 143.

[0081] By setting the fourth communication valve body 220, the different ends of the fourth communication valve body 220 can be controlled to communicate, so as to make the cooling water circulate. Specifically, the tenth communication end 221 and the twelfth communication end 223 of the fourth communication valve body 220 can be made to communicate, so that the cooling water flowing out of the seventh end 143 of the second valve body member 140 can flow to the low-temperature radiator 160. Also, the eleventh communication end 222 and the twelfth communication end 223 of the fourth communication valve body 220 can be made to communicate, so that the cooling water flowing out of the seventh end 143 of the second valve body member 140 can flow to the electric drive system 210 through the fourth communication valve body 220, facilitating the realization of the circulation of the cooling water.

[0082] It should be noted that when the ambient temperature is within the first temperature range, the tenth communication end 221 of the fourth communication valve body 220 can be communicated with the twelfth communication end 223, and the cooling water can be cooled by the low-temperature radiator 160. When the ambient temperature is within the second temperature range, the eleventh communication end 222 of the fourth communication valve body 220 can be communicated with the twelfth communication end 223. At this time, the ambient temperature is low enough, and there is no need for the low-temperature radiator 160 to cool the cooling water, that is, when the ambient temperature is low, the temperature of the cooling water can be directly reduced. Among them, the temperature value in the first temperature range is greater than the temperature value in the second temperature range.

[0083] In addition, in the embodiment of the present application, the fourth communication valve body 220 can be a three-way valve. Of course, the fourth communication valve body 220 can also be other types of valve bodies. For example, the fourth communication valve body 220 is a four-way valve. At this time, only one port of the four-way valve needs to be always closed. The embodiment of the present application does not limit this here.

[0084] In addition, in some embodiments, the refrigerator assembly 20 may further include a first cavity 22 and a second cavity 23. A cold storage cavity 221 is provided in the first cavity 22. A phase change refrigerant 001 is provided in the cold storage cavity 221. The refrigerator evaporator 21 is located in the cold storage cavity 221, and the refrigerator evaporator 21 is in contact with the phase change refrigerant 001. There is a gap between the cold storage cavity 221 and the second cavity 23. A refrigeration component 24 is provided in the gap. The refrigeration component 24 is respectively connected to the cold storage cavity 221 and the second cavity 23. A cold air fan 25 is provided in the first cavity 22. A wind duct is provided in the second cavity 23. The cold air fan 25 faces the wind duct, and the gap is communicated with the inside of the wind duct and the second cavity 23.

[0085] With such a setting, once the refrigerator evaporator 21 cools, the refrigerator evaporator 21 can cause the phase change refrigerant 001 to undergo a phase change, so that the phase change refrigerant 001 can store cold energy, facilitating the continuous cooling of the refrigerator assembly 20. Additionally, there is a gap between the cold storage chamber 221 and the second chamber 23, and a refrigeration component 24 is arranged in the gap. Therefore, the refrigerator evaporator 21 can cause the phase change refrigerant 001 in the cold storage chamber 221 to undergo a phase change, that is, the liquid phase change refrigerant 001 can be changed into the solid phase change refrigerant 001, thereby reducing the overall temperature of the cold storage chamber 221 and reducing the temperature in the first chamber 22. The refrigeration component 24 is respectively connected to the cold storage chamber 221 and the second chamber 23, so that the temperature of the refrigeration component 24 can be reduced by the cold storage chamber 221. Since a cold air fan 25 is arranged in the first chamber 22, an air duct is arranged in the second chamber 23, the cold air fan 25 faces the air duct, and the gap is communicated with the interior of the air duct and the second chamber 23. Therefore, when the cold air fan 25 operates, the air blown out by the cold air fan 25 can flow through the second chamber 23, then flow out of the second chamber 23, and flow through the refrigeration component 24, and the refrigeration component 24 can be cooled by the cold storage chamber 221, so that the air flowing through the refrigeration component 24 can be cooled by the refrigeration component 24 to form cool air. The cool air will flow into the second chamber 23 as the cold air fan 25 operates, thereby reducing the temperature in the second chamber 23, and further enabling the items accommodated in the second chamber 23 to be in a lower temperature environment, which helps the items to be stored for a long time. That is, by arranging the refrigeration component 24 and the cold air fan 25, it is convenient to cool the second chamber 23, so that the second chamber 23 can store items for a longer time.

[0086] It should be noted that in the embodiment of the present application, the phase change refrigerant 001 can submerge the refrigerator evaporator 21. Of course, the refrigerator evaporator 21 can also partially extend out of the phase change refrigerant 001, as long as the refrigerator evaporator 21 is in contact with the phase change refrigerant 001.

[0087] In addition, in the embodiment of the present application, the displacement of the compressor 10 is relatively large, resulting in a mismatch between the compressor 10 and the refrigerant required by the refrigerator assembly 20, and there is a large gap between the displacement of the compressor 10 and the demand of the compressor 10. By arranging the cold storage chamber 221, it is necessary to keep the phase change refrigerant 001 in the cold storage chamber 221 at a lower temperature, so that the refrigerator assembly 20 requires more cold energy, and then the demand of the refrigerator assembly 20 and the displacement of the compressor 10 can be better matched, and further ensure better refrigeration of the refrigerator assembly 20.

[0088] In addition, in the embodiments of the present application, the phase change refrigerant 001 in the cold storage cavity 221 may occupy 85% of the volume of the cold storage cavity 221, that is, the cold storage cavity 221 is not fully filled with the phase change refrigerant 001. Of course, the phase change refrigerant 001 in the cold storage cavity 221 may also occupy other ratios of the volume of the cold storage cavity 221. For example, the phase change refrigerant 001 in the cold storage cavity 221 occupies 90% of the volume of the cold storage cavity, and for another example, the phase change refrigerant 001 in the cold storage cavity 221 occupies 80% of the volume of the cold storage cavity. In this regard, the embodiments of the present application do not make any limitations here.

[0089] In addition, in some embodiments, the refrigeration assembly 24 may include a plurality of thermoelectric cooling elements 241 and a plurality of first heat exchange fin assemblies 242. The thermoelectric cooling element 241 has opposite first end 61 and second end 62, and the first end 61 is connected to the cold storage cavity 221; the first heat exchange fin assembly 242 is located between the thermoelectric cooling element 241 and the second cavity 23, and one end of the first heat exchange fin assembly 242 is connected to the second end 62 of the thermoelectric cooling element 241, and the other end of the first heat exchange fin assembly 242 is connected to the second cavity 23, so that the thermoelectric cooling element 241 is connected to the second cavity 23 through the first heat exchange fin assembly 242.

[0090] Since the first end 61 of the thermoelectric cooling element 241 is connected to the cold storage cavity 221, one end of the first heat exchange fin assembly 242 is connected to the second end 62 of the thermoelectric cooling element 241, and the other end of the first heat exchange fin assembly 242 is connected to the second cavity 23, therefore, the thermoelectric cooling element 241 can also play a role in transferring heat, thereby transferring the lower temperature of the cold storage cavity 221 to the second cavity 23, so that the temperature of the second cavity 23 is reduced. Specifically, the second end 62 of the thermoelectric cooling element 241 can be made the cold end, so that the thermoelectric cooling element 241 can transfer the cold quantity to the first heat exchange fin assembly 242, making the temperature of the first heat exchange fin assembly 242 lower. And the first heat exchange fin assembly 242 is located between the cold storage cavity 221 and the second cavity 23, and the air flowing out of the second cavity 23 will flow through the first heat exchange fin assembly 242. The first heat exchange fin assembly 242 is equivalent to making the air flow through the first heat exchange fin assembly 242, and the air can be cooled, and the air can exchange heat with the first heat exchange fin assembly 242 more fully, so that the temperature of the air flowing into the second cavity 23 again is effectively reduced, and then the temperature of the second cavity 23 is effectively reduced. That is, by providing the first heat exchange fin assembly 242, it is helpful to reduce the temperature of the second cavity 23.

[0091] In addition, the plurality of thermoelectric cooling elements 241 may be distributed at intervals, and one thermoelectric cooling element 241 is connected to one first heat exchange fin assembly 242.

[0092] It should be noted that the semiconductor refrigeration component 241 has a cold end and a hot end. That is, by passing different currents through the semiconductor refrigeration component 241, the positions of the cold end and the hot end of the semiconductor refrigeration component 241 can be interchanged. For example, when a first current is passed through the semiconductor refrigeration component 241, the first end 61 becomes the hot end and the second end 62 becomes the cold end. Thus, the semiconductor refrigeration component 241 can transfer cold to the second cavity 23, which helps to reduce the temperature of the second cavity 23. For another example, when a second current is passed through the semiconductor refrigeration component 241, the first end 61 becomes the cold end and the second end 62 becomes the hot end.

[0093] In addition, the first heat exchange fin assembly 242 may include a plurality of heat exchange fins. In addition, the first end 61 of the semiconductor refrigeration component 241 may be connected to the cold storage cavity 221 through a thermally conductive adhesive, and the thermally conductive adhesive may be a solid thermally conductive adhesive. The second end 62 of the semiconductor refrigeration component 241 may be connected to the first heat exchange fin assembly 242 through a thermally conductive adhesive.

[0094] In addition, in some embodiments, the refrigeration assembly 24 may further include a second heat exchange fin assembly. The second heat exchange fin assembly and the first heat exchange fin assembly 242 are spaced apart in the gap. One end of the second heat exchange fin assembly is connected to the second cavity 23, and the other end of the second heat exchange fin assembly is connected to the cold storage cavity 221.

[0095] Since the second heat exchange fin assembly and the first heat exchange fin assembly 242 are spaced apart in the gap, one end of the second heat exchange fin assembly is connected to the second cavity 23, and the other end of the second heat exchange fin assembly is connected to the cold storage cavity 221. Therefore, the second heat exchange fin assembly can also play a role in heat conduction, transferring the cold of the cold storage cavity 221 to the second cavity 23. And the air flowing out of the second cavity 23 will flow through the second heat exchange fin assembly. Thus, the second heat exchange fin assembly is equivalent to further increasing the heat exchange area on the basis of the first heat exchange fin assembly 242, so that the temperature of the air flowing through the first heat exchange fin assembly 242 and the second heat exchange fin assembly can be further reduced. Then, the air with a lower temperature flows into the second cavity 23 to cool the second cavity 23. That is, by setting the second heat exchange fin assembly, it can further help to reduce the temperature of the second cavity 23.

[0096] It should be noted that the second heat exchange fin assembly may include a plurality of heat exchange fins.

[0097] In addition, when the refrigeration component 24 includes the first heat exchange fin assembly 242 and the second heat exchange fin assembly, when it is necessary to refrigerate the refrigerator component 20, the refrigerator evaporator 21 can quickly refrigerate the phase change refrigerant 001. At this time, the refrigerator evaporator 21 is connected in parallel with the air conditioner evaporator 41, and their evaporation temperatures are the same. Generally, the evaporation temperature is in the range of 0-10°C, so that the temperature at which the cold storage cavity 221 undergoes a phase change is also 0-10°C, that is, the temperature of the cold storage cavity 221 is 0-10°C. The operation of the cold air fan 25 causes the air flowing out of the second cavity 23 to flow through the second heat exchange fin assembly, so that the second heat exchange fin assembly cools the air, reducing the temperature of the air flowing into the second cavity 23 and achieving rapid cooling of the refrigerator component 20. As the refrigeration time extends, when the temperature in the second cavity 23 drops below 10°C, an electric current can be applied to the semiconductor refrigeration element 241 to make the semiconductor refrigeration element 241 start to operate. Through the semiconductor refrigeration element 241, the temperature in the second cavity 23 can be further reduced to achieve a lower temperature in the second cavity 23. For example, the temperature in the second cavity 23 can be made to reach 0-15°C.

[0098] In addition, in the embodiments of the present application, the second cavity 23 can also be defrosted by the semiconductor refrigeration element 241. Specifically, after frosting occurs in the second cavity 23, the current applied to the semiconductor refrigeration element 241 can be changed so that the second end 62 of the semiconductor refrigeration element 241 is the hot end and the first end 61 is the cold end, thereby increasing the temperature of the first heat exchange fin assembly 242. Then, when the air flowing out of the second cavity 23 flows through the first heat exchange fin assembly 242, the temperature of the air is increased, and the air with an increased temperature flows into the second cavity 23, removing the frost in the second cavity 23, which is equivalent to defrosting the second cavity 23.

[0099] In addition, in some embodiments, a heat conduction plate is provided on the outer wall of the cold storage cavity 221 facing the second cavity 23, and the refrigeration component 24 is connected to the heat conduction plate.

[0100] With this setting, once the temperature of the cold storage cavity 221 changes, the heat conduction plate can quickly transfer the heat of the cold storage cavity 221 to the refrigeration component 24, enabling the refrigeration component 24 to respond quickly. That is, by providing the heat conduction plate, it is convenient for the temperature of the cold storage cavity 221 to be transferred to the refrigeration component 24.

[0101] It should be noted that the material of the heat conduction plate can be a metal material. Of course, the material of the heat conduction plate can also be other materials that can quickly transfer heat. The specific material of the heat conduction plate is not limited in the embodiments of the present application.

[0102] In addition, in the embodiments of the present application, the material of the cold storage cavity 221 can also be a material that can quickly transfer heat. For example, the material of the cold storage cavity 221 is a metal material. Through such a setting, the heat conduction plate does not need to be provided anymore. Of course, when the material of the cold storage cavity 221 is a material that can quickly transfer heat, the heat conduction plate can also be provided. In this regard, the embodiments of the present application do not make any limitations here.

[0103] In addition, when the refrigeration component 24 includes a semiconductor refrigeration element 241, the first end 61 of the semiconductor refrigeration element 241 is connected to the heat conduction plate. When the refrigeration component 24 includes a second heat exchange fin assembly, the second heat exchange fin assembly is connected to the heat conduction plate.

[0104] It should be noted that in Figures 1 to 6 , the dotted line indicates that this branch is not connected.

[0105] The embodiments of the present application provide a thermal management system. The thermal management system includes a compressor 10 and a coolant circuit in any of the above embodiments; a battery cooler 30 is connected to the compressor 10.

[0106] In the embodiments of the present application, by setting that the refrigerator evaporator 21 and the battery system 10 are both connected to the battery cooler 30, and the battery system 10 is in parallel with the refrigerator evaporator 21, and the battery cooler 30 is connected to the compressor 10, it is equivalent to that the refrigerator assembly 20 and the battery cooler 21 share the same compressor, that is, the compressor 10 in the refrigerator system is cancelled, so that the coolant flowing through the battery cooler 30 can flow to the refrigerator evaporator 21, enabling the refrigerator assembly 20 to refrigerate. That is, the compressor 10 in the vehicle refrigerator system can be cancelled. Only through one compressor 10, the refrigeration of the vehicle air conditioning system, the battery system, and the refrigerator system can be realized, thereby effectively reducing the cost of the vehicle.

[0107] In addition, in some embodiments, the thermal management system may further include an air conditioning assembly 40; the air conditioning assembly 40 includes an air conditioning evaporator 41, the air conditioning evaporator 41 is in parallel with the battery cooler 30, and the air conditioning evaporator 41 is connected to the compressor 10.

[0108] By setting the air conditioning assembly 40, and the air conditioning evaporator 41 of the air conditioning assembly 40 is in parallel with the battery cooler 30, and the air conditioning evaporator 41 is connected to the compressor 10, the air conditioning evaporator 41 and the battery cooler 30 can share the compressor 10, which can save the number of compressors 10 and reduce the cost. Moreover, the air conditioning evaporator 41 can effectively enable the air conditioning assembly 40 to refrigerate. Thus, after applying the thermal management system to the vehicle, the comfort of the vehicle can be improved.

[0109] In addition, in some embodiments, the thermal management system may further include a water-cooled condenser 50; the output end of the compressor 10 is connected to the water-cooled condenser 50, the water-cooled condenser 50 is respectively connected to the air-conditioning evaporator 41 and the battery cooler 30, and both the water-cooled condenser 50 and the battery cooler 30 are connected to the input end of the compressor 10.

[0110] Since the output end of the compressor 10 is connected to the water-cooled condenser 50, the high-temperature and high-pressure refrigerant flowing out of the compressor 10 can pass through the water-cooled condenser 50, that is, exchange heat with the water-cooled condenser 50, so that the gaseous refrigerant becomes a liquid refrigerant. Then the liquid refrigerant can flow through the air-conditioning evaporator 41 and the battery cooler 30. Thus, the air-conditioning evaporator 41 can cool the vehicle's air conditioner, and the refrigerant flowing through the battery cooler 30 can enable the battery cooler 30 to cool the vehicle's battery. After that, the refrigerant flowing out of the battery cooler 30 and the refrigerant flowing out of the air-conditioning evaporator 41 can flow into the compressor 10, enabling the compressor 10 to compress the refrigerant again and realizing the circulating flow of the refrigerant.

[0111] It should be noted that the thermal management system may further include a gas-liquid separator 230. Both the water-cooled condenser 50 and the battery cooler 30 are connected to the input end of the compressor 10 through the gas-liquid separator 230, so that the refrigerant flowing out of the battery cooler 30 and the refrigerant flowing out of the air-conditioning evaporator 41 can flow into the gas-liquid separator 230 and then into the compressor 10. The gas-liquid separator 230 can effectively separate gas and liquid, facilitating the compressor 10 to compress the refrigerant flowing into the compressor 10.

[0112] In addition, in some embodiments, the air-conditioning assembly 40 may further include a heater core 42, and the thermal management system further includes a first valve member 60, a first electric water pump 70, and a high-pressure water heater 80; the first valve member 60 includes a first end 61 and a second end 62. The water-cooled condenser 50 of the heater core 42 is connected to the high-pressure water heater 80, the high-pressure water heater 80 is connected to the heater core 42, the heater core 42 is connected to the first end 61, and the second end 62 is connected to the first electric water pump 70.

[0113] With such a setting, once the first end 61 and the second end 62 of the first valve member 60 are communicated, the first electric water pump 70 can be operated, so that the water flowing out of the water-cooled condenser 50 can flow through the first valve member 60 to the high-pressure water heater 80 to heat the water. After heating, the water can flow into the heater core 42, enabling the heater core 42 to emit warm air, that is, equivalent to making the air-conditioning assembly 40 generate heat. Thus, after applying the thermal management system to the vehicle, the temperature in the vehicle can be increased, and further the comfort of the vehicle can be improved.

[0114] In addition, in the embodiments of the present application, the first valve body member 60 may be a four-way valve. Of course, the first valve body member 60 may also be other types of valve bodies. For example, when the first valve body member 60 is a five-way valve, only one port of the five-way valve needs to be closed. The specific type of the second valve body member is not limited in the embodiments of the present application.

[0115] In addition, in some embodiments, the thermal management system may further include a first valve 120 and a second valve 130; the water-cooled condenser 50 is connected to the air-conditioning evaporator 41 through the first valve 120, and the water-cooled condenser 50 is connected to the battery cooler 30 through the second valve 130.

[0116] By providing the first valve 120, the state of the first valve 120 can be controlled so that the refrigerant flowing out of the water-cooled condenser 50 can flow to the air-conditioning evaporator 41, or part of the refrigerant flowing out of the water-cooled condenser 50 can flow into the air-conditioning evaporator 41. Specifically, the first valve 120 can be in an open state, so that the refrigerant flowing through the first valve 120 can flow into the air-conditioning evaporator 41, or the first valve 120 can be in a closed state, so that the refrigerant flowing to the first valve 120 will not flow to the air-conditioning evaporator 41. In addition, the opening degree of the first valve 120 can be adjusted, so that the flow rate of the refrigerant flowing into the air-conditioning evaporator 41 can be adjusted, and the temperature of the vehicle air conditioner can be changed. That is, by providing the first valve 120, it is convenient to adjust the temperature of the vehicle air conditioner.

[0117] It should be noted that the first valve 120 may be an expansion valve. Of course, the first valve 120 may also be other types of valves. In this regard, the embodiments of the present application do not make any limitations here.

[0118] In addition, in some embodiments, the coolant circuit further includes a first communication valve body 90 and a second communication valve body 100, and the thermal management system further includes a first valve body member 60. The first valve body member 60 includes a third end 63 and a fourth end 64. The third communication end 93 of the first communication valve body 90 is respectively connected to the third end 63 and one end of the battery system 110, and the fourth end 64 is connected to the fourth communication end 101. Through such an arrangement, by switching the first valve body member 60 and the second communication valve body 100, the relatively warm water flowing out of the heater core 42 can flow to the battery system 110, thereby heating the vehicle battery. Specifically, the first end 61 of the first valve body member 60 can be communicated with the fourth end 64, the second end 62 of the first valve body member 60 can be communicated with the third end 63, and at the same time, the fourth communication end 101 of the second communication valve body 100 can be communicated with the fifth communication end 102. Thus, once the first electronic water pump 70 operates, the water flowing out of the water-cooled condenser 50 can be heated by the high-pressure water heater 80, and the heated water flows through the heater core 42. The water flowing out of the heater core 42 can flow to the second communication valve body 100 through one end and the third end 63 of the first valve body member 60, and through the fourth communication end 101 and the fifth communication end 102 of the second communication valve body 100 to the battery system 110. Then, the water flowing out of the battery system 110 can flow back to the first electronic water pump 70 through the second end 62 and the third end 63 of the first valve body member 60. Among them, the water flowing out of the heater core 42 has a relatively high temperature, so that the battery system 110 can be heated, that is, the vehicle battery can be heated.

[0119] In addition, in some embodiments, the thermal management system may further include a third communication valve body 200 and a high-pressure water heater 80. The third communication valve body 200 includes a seventh communication end 201, an eighth communication end 202, and a ninth communication end 203. The water-cooled condenser 50 is connected to the seventh communication end 201, the eighth communication end 202 is connected to the high-pressure water heater 80, and the ninth communication end 203 is connected to the low-temperature radiator 160.

[0120] By setting the third connecting valve body 200, the different ends of the third connecting valve body 200 can be controlled to be connected, so that the cooling water circulates. Specifically, the seventh connecting end 201 of the third connecting valve body 200 can be connected to the eighth connecting end 202, so that the water flowing out of the water-cooled condenser 50 can flow to the high-pressure water heater 80 through the third connecting valve body 200, be heated by the high-pressure water heater 80, and then the heated water flows to the heater core 42; alternatively, the seventh connecting end 201 of the third connecting valve body 200 can be connected to the ninth connecting end 203, so that the water flowing out of the water-cooled condenser 50 can flow to the low-temperature radiator 160 through the third connecting valve body 200 and be cooled or heat-exchanged by the low-temperature radiator 160. Of course, the seventh connecting end 201 can also be connected to both the eighth connecting end 202 and the ninth connecting end 203 at the same time, so that the water flowing out of the water-cooled condenser 50 can flow to the high-pressure water heater 80 and the low-temperature radiator 160 through the third connecting valve body 200. Moreover, by setting the third connecting valve body 200, once the water flows to the water-cooled condenser 50, the flow direction of the water flowing out of the water-cooled condenser 50 can be controlled by controlling the third connecting valve body 200, which is convenient for controlling the water flow direction and thus facilitating the realization of water circulation.

[0121] It should be noted that the third connecting valve body 200 can be a three-way valve. Of course, the third connecting valve body 200 can also be other types of valve bodies. For example, the third connecting valve body 200 is a four-way valve. In this case, only one port of the four-way valve needs to be always closed. In this regard, the embodiments of the present application do not make any limitations here.

[0122] In addition, in the embodiments of the present application, the vehicle thermal management system may further include a pressure sensor and a temperature sensor. Each component can be connected through a pipeline, and a pressure sensor and a temperature sensor can be provided on the pipeline, and the pressure sensor and the temperature sensor can be integrated together. For example, as Figure 1 shown, Figure 1 in which PT represents the integration of the pressure sensor and the temperature sensor, and T represents the temperature sensor.

[0123] The embodiments of the present application provide a control method for a thermal management system. The thermal management system includes a coolant circuit, the coolant circuit: the second valve member 140, the first connecting valve body 90, the second connecting valve body 100, the fourth connecting valve body 220, and the thermal management system further includes: the first valve member 60, the third connecting valve body 200, the first valve 120, and the second valve 130; as Figure 9 shown, the control method includes:

[0124] Step 901: Determine the working mode of the thermal management system.

[0125] Among them, the controller in the vehicle can determine the working mode of the thermal management system in real time.

[0126] Step 902: Based on the working mode of the thermal management system, control at least one of the first valve body 60, the second valve body 140, the first communication valve body 90, the second communication valve body 100, the third communication valve body 200, the fourth communication valve body 220, the first valve 120, and the second valve 130 to switch.

[0127] In addition, in one implementation, as Figure 2 shown, the implementation of step 902 can be: when the thermal management system is in the mode of air-conditioning refrigeration, the refrigerator component 20 is working, and the battery is refrigerated, control both the first valve 120 and the second valve 130 to be in the open state, and control the first communication end 91 of the first communication valve body 90 to be communicated with the second communication end 92 and the third communication end 93 of the first communication valve body 90 respectively, and control the fifth communication end 102 of the second communication valve body 100 to be communicated with the sixth communication end 103, control the sixth end 142 and the seventh end 143 of the second valve body 140 to be communicated, and control the fifth end 141 and the eighth end 144 of the second valve body 140 to be communicated.

[0128] Among them, when it is summer, control both the first valve 120 and the second valve 130 to be in the open state. After the refrigerant flowing from the compressor 10 to the water-cooled condenser 50 is cooled by the water-cooled condenser 50, the refrigerant can flow through the first valve 120 to the air-conditioning evaporator 41, so that the air-conditioning evaporator 41 can refrigerate, realizing the refrigeration of the air-conditioning component 40. And the refrigerant can also flow through the second valve 130 to the battery cooler 30, so that the temperature of the battery cooler 30 is reduced. Thus, the cooling water flowing through the battery cooler 30 can be cooled. Control the first communication end 91 of the first communication valve body 90 to be communicated with the second communication end 92 and the third communication end 93 of the first communication valve body 90 respectively, so that the relatively low-temperature cooling water flowing out of the battery cooler 30 can flow to the refrigerator evaporator 21 through the second communication end 92 and flow to the battery system 110 through the third communication end 93, realizing the operation of the refrigerator component 20, that is, the refrigerator component 20 refrigerates, and the battery is refrigerated. In addition, control the sixth end 142 and the seventh end 143 of the second valve body 140 to be communicated, and control the fifth end 141 and the eighth end 144 of the second valve body 140 to be communicated, so that the cooling water flowing out of the battery system 110 and the refrigerator evaporator 21 can flow through the fifth end 141 and the eighth end 144 of the second valve body 140 to the electric drive system 210, and then flow to the low-temperature radiator 160.

[0129] In addition, the seventh communication end 201 of the third communication valve body 200 can be controlled to communicate with the ninth communication end 203, and the tenth communication end 221 of the fourth communication valve body 220 can be controlled to communicate with the twelfth communication end 223, so that the cooling water flowing into the low-temperature radiator 160 can flow to the second valve body member 140 through the fourth communication valve body 220, and flow to the battery cooler 30 through the sixth end 142 and the seventh end 143 of the second valve body member 140, realizing the cooling water circulation. Moreover, the cooling water flowing out of the fourth communication valve body 220 can also flow to the first electronic water pump 70 and the water-cooled condenser 50, and then flow to the low-temperature radiator 160 through the seventh communication end 201 and the ninth communication end 203 of the third communication valve body 200, realizing the cooling water circulation.

[0130] In addition, in the initial state of the refrigerator assembly 20, the refrigerator evaporator 21 in the refrigerator assembly 20 can quickly cool the phase-change refrigerant 001. At this time, the temperature of the phase-change refrigerant 001 in the cold storage chamber 221 is 0-10°C. Then, the rapid cooling of the refrigerator assembly 20 is achieved through the semiconductor refrigeration element 241 and the first heat exchange fin assembly 242. At this time, whether the phase-change refrigerant 001 in the cold storage chamber 221 undergoes a phase change or not does not affect the refrigeration of the refrigerator assembly 20 by the semiconductor refrigeration element 241.

[0131] In addition, in one implementation, as Figure 3 shown, the implementation of step 902 can be: when the ambient temperature is greater than or equal to the preset temperature threshold, and the thermal management system is in the mode where the air conditioner is off, the battery does not need to be cooled, and the refrigerator assembly 20 is operating, control the first valve 120 to be in the closed state, control the second valve 130 to be in the open state, and control the first communication end 91 of the first communication valve body 90 to communicate with the second communication end 92 of the first communication valve body 90, and control the fifth end 141 and the sixth end 142 of the second valve body member 140 to communicate.

[0132] Among them, when it is summer, the compressor 10 can be operated at this time, that is, the compressor 10 only provides refrigeration for the refrigerator assembly 20, and there is no cooling requirement for the air conditioner and the battery. Specifically, the first valve 120 is controlled to be in a closed state, and the second valve 130 is controlled to be in an open state. Thus, after the refrigerant flowing from the compressor 10 to the water-cooled condenser 50 is cooled by the water-cooled condenser 50, the refrigerant cannot flow to the air-conditioning evaporator 41 through the first valve 120, so that the air-conditioning evaporator 41 cannot refrigerate, that is, the air conditioner is turned off, and the refrigerant can flow to the battery cooler 30 through the second valve 130, so that the battery cooler 30 cools the cooling water flowing through the battery cooler 30. And the first communication end 91 of the first communication valve body 90 is controlled to communicate with the second communication end 92 of the first communication valve body 90, and the fifth end 141 and the sixth end 142 of the second valve body member 140 are controlled to communicate. Thus, the relatively low-temperature cooling water flowing out of the battery cooler 30 can flow to the refrigerator evaporator 21 through the first communication valve body 90 and will not flow to the battery system 110, that is, the battery will not be refrigerated, and the cooling water flowing to the refrigerator evaporator 21 can lower the temperature of the phase-change refrigerant 001 in the cold storage chamber 221, realizing refrigeration of the refrigerator assembly 20, and the cooling water flowing out of the refrigerator evaporator 21 can flow to the battery cooler 30 through the second valve body member 140 to realize cooling water circulation.

[0133] It should be noted that the low-temperature water flowing out of the battery cooler 30 usually has a temperature of -10 to 5 °C, so that the phase-change refrigerant 001 in the cold storage chamber 221 can be refrigerated and cooled. At this time, the phase-change temperature of the phase-change refrigerant 001 is about 5-8 °C. The refrigerator evaporator 21 in the entire cold storage chamber 221 is used to quickly refrigerate the phase-change refrigerant 001 to realize the phase change process of the phase-change refrigerant 001 from liquid to solid. Through the phase-change cold storage process, the matching of the large displacement of the compressor 10 and the small refrigeration capacity required by the refrigerator assembly 20 is realized. In addition, the compressor 10 is turned on for a short time to operate for refrigeration and ice making, so that the phase-change refrigerant 001 in the cold storage chamber 221 stores cold and undergoes a phase change to freeze. And the cold quantity is slowly released through the semiconductor refrigeration element 241 to realize the refrigeration and even freezing function of the refrigerator assembly 20. At this time, the temperature difference between the hot and cold ends of the semiconductor refrigeration element 241 is relatively small, generally less than 10 K, and a relatively high refrigeration energy efficiency of the semiconductor refrigeration element 241 can be obtained. The problem of realizing the short-time operation of the compressor 10 for refrigeration and long-time stop to achieve energy saving and matching with the large compressor 10 is solved.

[0134] In addition, in one implementation manner, such as Figure 4As shown, the implementation of step 902 can be as follows: when the ambient temperature is lower than the preset temperature threshold, and the thermal management system is in the mode where the air conditioner is off, the battery does not require cooling, and the refrigerator component 20 is operating, control both the first valve 120 and the second valve 130 to be in the closed state, and control the first communication end 91 of the first communication valve body 90 to communicate with the second communication end 92 of the first communication valve body 90, control the sixth end 142 and the seventh end 143 of the second valve body member 140 to communicate, control the fifth end 141 and the eighth end 144 of the second valve body member 140 to communicate, and control the tenth communication end 221 of the fourth communication valve body 220 to communicate with the twelfth communication end 223 of the fourth communication valve body 220.

[0135] Among them, when it is in spring, autumn, or winter, because the ambient air temperature is relatively low, the ambient temperature can be -20°C to 20°C. The cooling fan 180 and the low-temperature radiator 160 can be used to cool the temperature of the cooling water, ensuring that the temperature of the phase-change refrigerant 001 in the cold storage chamber 221 of the refrigerator component 20 is equivalent to the ambient temperature, and then the semiconductor refrigeration component 241 is used to refrigerate the refrigerator component 20. Specifically, control both the first valve 120 and the second valve 130 to be in the closed state, so that the compressor 10 will not operate, or after the refrigerant flowing from the compressor 10 to the water-cooled condenser 50 is cooled by the water-cooled condenser 50, the refrigerant cannot flow through the first valve 120 to the air-conditioning evaporator 41 and cannot flow through the second valve 130 to the battery cooler 30. By controlling the first communication end 91 of the first communication valve body 90 to communicate with the second communication end 92 of the first communication valve body 90, controlling the sixth end 142 and the seventh end 143 of the second valve body member 140 to communicate, controlling the fifth end 141 and the eighth end 144 of the second valve body member 140 to communicate, and controlling the tenth communication end 221 of the fourth communication valve body 220 to communicate with the twelfth communication end 223 of the fourth communication valve body 220, it can be ensured that the relatively low-temperature cooling water flowing out of the low-temperature radiator 160 flows to the battery cooler 30, and then flows to the refrigerator evaporator 21 through the first communication valve body 90, realizing the refrigeration of the refrigerator component 20. Among them, by controlling the first communication end 91 of the first communication valve body 90 to communicate with the second communication end 92 of the first communication valve body 90, controlling the sixth end 142 and the seventh end 143 of the second valve body member 140 to communicate, controlling the fifth end 141 and the eighth end 144 of the second valve body member 140 to communicate, and controlling the tenth communication end 221 of the fourth communication valve body 220 to communicate with the twelfth communication end 223 of the fourth communication valve body 220, it is equivalent to making the refrigerator evaporator 21, the electric drive system 210, and the low-temperature radiator 160 in series, which can reduce the work of high-pressure devices such as the compressor 10 and achieve the purpose of energy conservation.

[0136] In addition, in one implementation, as Figure 5As shown, the implementation of step 902 can be as follows: when the heat management system is in the mode of air conditioner heating and the refrigerator component 20 is working, control the first valve 120 to be in the closed state, and control the first communication end 91 of the first communication valve body 90 to communicate with the second communication end 92 of the first communication valve body 90, control the fifth end 141 and the eighth end 144 of the second valve body member 140 to communicate, control the sixth end 142 and the seventh end 143 of the second valve body member 140 to communicate, control the tenth communication end 221 of the fourth communication valve body 220 to communicate with the twelfth communication end 223 of the fourth communication valve body 220, control the first end 61 and the second end 62 of the first valve body member 60 to communicate, and control the seventh communication end 201 and the eighth communication end 202 of the third communication valve body 200 to communicate.

[0137] Among them, when it is winter, control the first communication end 91 of the first communication valve body 90 to communicate with the second communication end 92 of the first communication valve body 90, control the fifth end 141 and the eighth end 144 of the second valve body member 140 to communicate, control the sixth end 142 and the seventh end 143 of the second valve body member 140 to communicate, and control the tenth communication end 221 of the fourth communication valve body 220 to communicate with the twelfth communication end 223 of the fourth communication valve body 220. Thus, it is equivalent to connecting the low-temperature radiator 160, the battery cooler 30, the refrigerator evaporator 21, and the electric drive system 210 in series. Therefore, the cooling water flowing out of the battery cooler 30 can flow to the electric drive system 210 through the fourth communication valve body 220, the cooling water flowing out of the electric drive system 210 can flow to the low-temperature radiator 160, the cooling water flowing out of the low-temperature radiator 160 can flow to the second valve body member 140 through the fourth communication valve body 220, and flow into the battery cooler 30 to realize the circulating flow of the cooling water. In addition, the compressor 10 can be controlled to operate, and the second valve 130 can be controlled to be in the open state. Thus, after the refrigerant flowing from the compressor 10 to the water-cooled condenser 50 is cooled by the water-cooled condenser 50, the refrigerant can flow to the battery cooler 30 through the second valve 130, and the battery cooler 30 can cool the cooling water flowing through the battery cooler 30 to realize the temperature reduction of the refrigerator component 20.

[0138] It should be noted that the temperature of the cooling water flowing out of the battery cooler 30 is generally -10 to 10 °C, which can realize the phase change refrigeration of the phase change refrigerant 001 in the cold storage cavity 221, and then realize the refrigeration or freezing function of the refrigerator component 20 through the semiconductor refrigeration element 241. At this time, the battery does not need to be heated.

[0139] In addition, in one implementation, such as Figure 6As shown, the implementation of step 902 can be as follows: when the thermal management system is in the battery heating mode, control the first valve 120 to be in the closed state, control the seventh communication end 201 and the eighth communication end 202 of the third communication valve body 200 to be communicated, and control the first end 61 and the fourth end 64 of the first valve body member 60 to be communicated, control the fourth communication end 101 and the fifth communication end 102 of the second communication valve body 100 to be communicated, and control the second end 62 and the third end 63 of the first valve body member 60 to be communicated.

[0140] Among them, when it is winter and the battery needs to be heated, control the seventh communication end 201 and the eighth communication end 202 of the third communication valve body 200 to be communicated, and control the first end 61 and the fourth end 64 of the first valve body member 60 to be communicated, control the fourth communication end 101 and the fifth communication end 102 of the second communication valve body 100 to be communicated, and control the second end 62 and the third end 63 of the first valve body member 60 to be communicated. Thus, the water flowing out from the water-cooled condenser 50 can flow through the third communication valve body 200 to the high-pressure water heater 80, and the high-pressure water heater 80 heats the water. The heated water flows through the warm air core 42, and the relatively warm water flowing out from the warm air core 42 can flow to the battery system 110 through the first valve body member 60 and the second communication valve body 100 to heat the battery system 110. The water flowing out from the battery system 110 can flow to the water-cooled condenser 50 through the first valve body member 60, realizing the circulating flow of water. Among them, it is equivalent to the battery system 110 and the warm air core 42 being connected in series, and using the relatively warm water flowing out from the warm air core 42 to heat the battery system 110.

[0141] Among them, when the refrigerator assembly 20 needs to operate, the first communication end 91 and the second communication end 92 of the first communication valve body 90 can be controlled to communicate, the fifth end 141 and the eighth end 144 of the second valve body member 140 can be controlled to communicate, the sixth end 142 and the seventh end 143 of the second valve body member 140 can be controlled to communicate, and according to the ambient temperature, the tenth communication end 221 and the twelfth communication end 223 of the fourth communication valve body 220 can be controlled to communicate, or the eleventh communication end 222 and the twelfth communication end 223 of the fourth communication valve body 220 can be controlled to communicate. When the ambient temperature is within the first temperature range, the tenth communication end 221 and the twelfth communication end 223 of the fourth communication valve body 220 are controlled to communicate. When the ambient temperature is within the second temperature range, the eleventh communication end 222 and the twelfth communication end 223 of the fourth communication valve body 220 are controlled to communicate. Through such control, the cooling water flowing out of the battery cooler 30 can flow to the refrigerator evaporator 21, so that the cooling water flowing out of the refrigerator evaporator 21 can flow back to the battery cooler 30 after flowing through the electric drive system 210, or the cooling water flowing out of the refrigerator evaporator 21 can flow through the electric drive system 210 and the low-temperature radiator 160 and then back to the battery cooler 30.

[0142] In addition, in some implementation manners, the control method further includes: determining whether the refrigerator assembly 20 is in a defrosting mode; when the refrigerator assembly 20 is in the defrosting mode, switching the current direction of the semiconductor refrigeration element 241 so that the current direction in the semiconductor refrigeration element 241 is different from the initial current direction in the semiconductor refrigeration element 241, and the end of the semiconductor refrigeration element 241 facing the first heat exchange fin assembly 242 is the hot end, and the end of the semiconductor refrigeration element 241 facing the cold storage cavity 221 is the cold end.

[0143] Specifically, after frosting occurs in the second cavity 23, the current applied to the semiconductor refrigeration element 241 can be changed so that the second end 62 of the semiconductor refrigeration element 241 is the hot end and the first end 61 is the cold end, so that the temperature of the first heat exchange fin assembly 242 is increased. Furthermore, when the air flowing out of the second cavity 23 flows through the first heat exchange fin assembly 242, the temperature of the air is increased, and the air with an increased temperature flows into the second cavity 23, so that the frost in the second cavity 23 is removed, that is, the second cavity 23 is defrosted.

[0144] The embodiment of the present application provides a vehicle, and the vehicle includes the thermal management system in any one of the above embodiments.

[0145] It should be noted that the types of vehicles include but are not limited to electric vehicles, hybrid vehicles, etc.

[0146] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0147] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A cooling liquid circuit, characterized in that: The coolant circuit includes: a refrigerator assembly, a battery cooler and a battery system; The refrigerator assembly includes a refrigerator evaporator. The refrigerator evaporator and the battery system are both connected to the battery cooler, and the battery system is connected in parallel with the refrigerator evaporator.

2. The coolant circuit according to claim 1, characterized in that: The coolant circuit also includes a first valve body assembly; The battery system is connected in parallel with the refrigerator evaporator through the first valve body assembly.

3. The coolant circuit according to claim 2, characterized in that: The first valve body assembly includes a first connecting valve body and a second connecting valve body; The first connecting valve body includes a first connecting end, a second connecting end and a third connecting end, the second connecting valve body includes a fourth connecting end, a fifth connecting end and a sixth connecting end, the first connecting end is connected to the battery cooler, the second connecting end is connected to the liquid inlet end of the refrigerator evaporator, the third connecting end is connected to one end of the battery system, the other end of the battery system is connected to the fifth connecting end, and the sixth connecting end is connected to the liquid outlet end of the refrigerator evaporator.

4. The coolant circuit according to any one of claims 1 to 3, characterized in that: The coolant circuit also includes a second valve body, an electric drive system and a low-temperature radiator; The second valve body includes a fifth end, a sixth end, a seventh end and an eighth end; the liquid outlet end of the refrigerator evaporator is connected to the fifth end, the sixth end is connected to the battery cooler, the seventh end is connected to one end of the low-temperature radiator, the eighth end is connected to the electric drive system, and the electric drive system is connected to the other end of the low-temperature radiator.

5. The coolant circuit according to claim 4, characterized in that: The coolant circuit also includes a second electronic water pump; the sixth end is connected to the battery cooler through the second electronic water pump.

6. The coolant circuit according to claim 4, characterized in that: The coolant circuit also includes a cooling fan; the cooling fan is arranged on one side of the low-temperature radiator.

7. The coolant circuit according to any one of claims 5 to 6, characterized in that: The coolant circuit also includes a third electronic water pump; the eighth end is connected to the electric drive system through the third electronic water pump.

8. The coolant circuit according to any one of claims 5 to 6, characterized in that: The coolant circuit also includes a fourth communication valve body; The fourth communicating valve body includes a tenth communicating end, an eleventh communicating end and a twelfth communicating end, the tenth communicating end is connected to one end of the low-temperature radiator, the eleventh communicating end is connected to the electric drive system, and the twelfth communicating end is connected to the seventh end.

9. The coolant circuit according to any one of claims 1 to 3, characterized in that: The refrigerator assembly further includes a first cavity and a second cavity, wherein a cold storage cavity is provided in the first cavity, a phase-change refrigerant is provided in the cold storage cavity, the refrigerator evaporator is located in the cold storage cavity, and the refrigerator evaporator is in contact with the phase-change refrigerant; There is a gap between the cold storage chamber and the second cavity, a refrigeration component is arranged in the gap, the refrigeration component is respectively connected to the cold storage chamber and the second cavity, a cold air fan is arranged in the first cavity, an air duct is arranged in the second cavity, the cold air fan faces the air duct, and the gap is connected with the air duct and the interior of the second cavity.

10. The coolant circuit according to claim 9, characterized in that: The refrigeration assembly includes a plurality of semiconductor refrigeration elements and a plurality of first heat exchange fin assemblies, wherein the semiconductor refrigeration element has a first end and a second end opposite to each other, and the first end is connected to the cold storage chamber; The first heat exchange fin assembly is located between the semiconductor refrigeration element and the second cavity, and one end of the first heat exchange fin assembly is connected to the second end of the semiconductor refrigeration element, and the other end of the first heat exchange fin assembly is connected to the second cavity, so that the semiconductor refrigeration element is connected to the second cavity through the first heat exchange fin assembly.

11. A thermal management system, characterized in that: The thermal management system comprises a compressor and a coolant circuit as claimed in any one of claims 1 to 10; The battery cooler is connected to the compressor.

12. The thermal management system according to claim 11, characterized in that: The thermal management system also includes an air conditioning component; The air conditioning assembly includes an air conditioning evaporator, the air conditioning evaporator is connected in parallel with the battery cooler, and the air conditioning evaporator is connected to the compressor.

13. The thermal management system according to claim 12, characterized in that: The thermal management system also includes a water-cooled condenser; The output end of the compressor is connected to the water-cooled condenser, the water-cooled condenser is respectively connected to the air-conditioning evaporator and the battery cooler, and the water-cooled condenser and the battery cooler are both connected to the input end of the compressor.

14. The thermal management system according to claim 13, characterized in that: The coolant circuit further includes a first communication valve body and a second communication valve body, and the thermal management system further includes a first valve body member, and the first valve body member includes a third end and a fourth end; The third communication end of the first communication valve body is connected to the third end and one end of the battery system respectively, and the fourth end is connected to the fourth communication end of the second communication valve body.

15. The thermal management system according to claim 13, characterized in that: The thermal management system further includes a heater core, and the thermal management system further includes a first valve body, a first electronic water pump, and a high-pressure water heater; The first valve body comprises a first end and a second end, the water-cooled condenser is connected to the high-pressure water heater, the high-pressure water heater is connected to the heater core, the heater core is connected to the first end, and the second end is connected to the first electronic water pump.

16. The thermal management system according to any one of claims 13 to 15, characterized in that: The thermal management system further includes a first valve and a second valve; The water-cooled condenser is connected to the air-conditioning evaporator through the first valve, and the water-cooled condenser is connected to the battery cooler through the second valve.

17. The thermal management system according to any one of claims 13 to 15, characterized in that: The coolant circuit further includes a low-temperature radiator, and the thermal management system further includes a third communication valve body and a high-pressure water heater; The third communicating valve body includes a seventh communicating end, an eighth communicating end and a ninth communicating end, the water-cooled condenser is connected to the seventh communicating end, the eighth communicating end is connected to the high-pressure water heater, and the ninth communicating end is connected to the low-temperature radiator.

18. A control method for a thermal management system, characterized in that: The thermal management system includes a coolant circuit, the coolant circuit includes a second valve body, a first connecting valve body, a second connecting valve body, and a fourth connecting valve body. The thermal management system also includes a first valve body, a third connecting valve body, a first valve, and a second valve. The control method includes: determining an operating mode of the thermal management system; Based on the working mode of the thermal management system, at least one of the first valve body, the second valve body, the first connecting valve body, the second connecting valve body, the third connecting valve body, the fourth connecting valve body, the first valve and the second valve is controlled to switch.

19. The control method according to claim 18, characterized in that: The method of controlling the switching of at least one of the first valve body, the second valve body, the first connecting valve body, the second connecting valve body, the third connecting valve body, the fourth connecting valve body, the first valve and the second valve based on the working mode of the thermal management system comprises: When the thermal management system is in the mode of air conditioning cooling, the refrigerator component is working and the battery is cooling, the first valve and the second valve are controlled to be in the open state, and the first connecting end of the first connecting valve body is controlled to be connected with the second connecting end and the third connecting end of the first connecting valve body respectively, and the fifth connecting end of the second connecting valve body is controlled to be connected with the sixth connecting end, the sixth end and the seventh end of the second valve body are controlled to be connected, and the fifth end and the eighth end of the second valve body are controlled to be connected.

20. The control method according to claim 18, characterized in that: The method of controlling the switching of at least one of the first valve body, the second valve body, the first connecting valve body, the second connecting valve body, the third connecting valve body, the fourth connecting valve body, the first valve and the second valve based on the working mode of the thermal management system comprises: When the ambient temperature is greater than or equal to the preset temperature threshold, and the thermal management system is in a mode in which the air conditioner is turned off, the battery does not need to be refrigerated, and the refrigerator component is working, the first valve is controlled to be in a closed state, the second valve is controlled to be in an open state, the first connecting end of the first connecting valve body is controlled to be connected to the second connecting end of the first connecting valve body, and the fifth end and the sixth end of the second valve body are controlled to be connected.

21. The control method according to claim 18, characterized in that: The method of controlling the switching of at least one of the first valve body, the second valve body, the first connecting valve body, the second connecting valve body, the third connecting valve body, the fourth connecting valve body, the first valve and the second valve based on the working mode of the thermal management system comprises: When the ambient temperature is lower than the preset temperature threshold, and the thermal management system is in a mode in which the air conditioner is turned off, the battery does not need to be cooled, and the refrigerator assembly is working, the first valve and the second valve are both controlled to be in a closed state, and the first connecting end of the first connecting valve body is controlled to be connected to the second connecting end of the first connecting valve body, the sixth end and the seventh end of the second valve body are controlled to be connected, the fifth end and the eighth end of the second valve body are controlled to be connected, and the tenth connecting end of the fourth connecting valve body is controlled to be connected to the twelfth connecting end of the fourth connecting valve body.

22. The control method according to claim 18, characterized in that: The method of controlling the switching of at least one of the first valve body, the second valve body, the first connecting valve body, the second connecting valve body, the third connecting valve body, the fourth connecting valve body, the first valve and the second valve based on the working mode of the thermal management system comprises: When the thermal management system is in the air conditioning heating mode and the refrigerator component is working in the working mode, the first valve is controlled to be in a closed state, and the first connecting end of the first connecting valve body is controlled to be connected with the second connecting end of the first connecting valve body, the fifth end and the eighth end of the second valve body are controlled to be connected, the sixth end and the seventh end of the second valve body are controlled to be connected, the tenth connecting end of the fourth connecting valve body is controlled to be connected with the twelfth connecting end of the fourth connecting valve body, the first end and the second end of the first valve body are controlled to be connected, and the seventh connecting end and the eighth connecting end of the third connecting valve body are controlled to be connected.

23. The control method according to claim 18, characterized in that: The method of controlling the switching of at least one of the first valve body, the second valve body, the first connecting valve body, the second connecting valve body, the third connecting valve body, the fourth connecting valve body, the first valve and the second valve based on the working mode of the thermal management system comprises: When the thermal management system is in the battery heating mode, the first valve is controlled to be in a closed state, the seventh connecting end and the eighth connecting end of the third connecting valve body are controlled to be connected, the first end and the fourth end of the first valve body are controlled to be connected, the fourth connecting end and the fifth connecting end of the second connecting valve body are controlled to be connected, and the second end and the third end of the first valve body are controlled to be connected.

24. A vehicle, characterized in that: The vehicle comprises a coolant circuit as claimed in any one of claims 1-10, or a thermal management system as claimed in any one of claims 11-17.

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