Automobile thermal management system and control method thereof

Abstract

The present invention provides an automotive thermal management system and a control method thereof. The automotive thermal management system includes: a compressor, an evaporative heat exchanger, a condensing heat exchanger, a first throttling device, a first in-vehicle heat exchanger, a second in-vehicle heat exchanger, an on-vehicle refrigerator, a motor, and a battery. The first in-vehicle heat exchanger can exchange heat with the evaporative heat exchanger via a cold-carrying pipe, and the second in-vehicle heat exchanger can exchange heat with the condensing heat exchanger via a cold-carrying pipe. The on-vehicle refrigerator can exchange heat with the evaporative heat exchanger via the cold-carrying pipe. The motor can exchange heat with the evaporative heat exchanger via the cold-carrying pipe. The battery can exchange heat with the evaporative heat exchanger via the cold-carrying pipe, or with the condensing heat exchanger via the cold-carrying pipe. The automotive thermal management system also includes a multi-way valve having multiple interfaces and a passageway within the multi-way valve that connects and blocks two of the multiple interfaces. The present invention effectively solves the problems of low energy efficiency, high cost, and large space occupied by on-vehicle refrigerators.

Description

Technical Field

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

[0002] The electric vehicle market is rapidly developing, and comprehensive thermal management solutions for EV batteries, motors, electronic controls, and air conditioning are increasingly being developed. Heat dissipation and cooling for these three major loads are currently the primary focus of automotive thermal management. However, with the upgrading and upgrading of vehicle interiors, the in-vehicle refrigerator, as a major load, is also gradually being managed. For in-vehicle refrigerators, the industry's primary solution is a separate system independent of the thermal management system, commonly employing semiconductor refrigeration or a separate vapor compression refrigeration system. Semiconductor refrigeration is highly susceptible to environmental impact and has low efficiency, while standalone compression refrigeration requires an additional refrigeration system, which is not only costly but also takes up space within the vehicle. Furthermore, automotive air conditioning vents are often configured to blow air to the face or feet. This can cause passengers to feel noticeably stuffy in the face and body during heating. Even if this can be alleviated by using the foot-blowing method, it can still result in uneven heating within the cabin, impacting the comfort experience for passengers. Given these two factors, a multifunctional thermal management system is crucial for addressing both in-vehicle refrigerator and heating comfort issues.

[0003] Since the existing vehicle refrigerators have technical problems such as low energy efficiency, the present invention studies and designs an automobile thermal management system and a control method thereof. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of low energy efficiency of the vehicle refrigerator in the prior art, thereby providing an automobile thermal management system and a control method thereof.

[0005] In order to solve the above problems, the present invention provides an automobile thermal management system, which includes:

[0006] A compressor, an evaporating heat exchanger, a condensing heat exchanger, a first throttling device, a first in-vehicle heat exchanger, a second in-vehicle heat exchanger, an on-board refrigerator, a motor, and a battery, wherein the compressor, the condensing heat exchanger, the first throttling device, and the evaporating heat exchanger are connected to form a refrigerant circulation loop;

[0007] The first in-vehicle heat exchanger can exchange heat with the evaporative heat exchanger via a cold-carrying pipe to cool the interior of the vehicle, and the second in-vehicle heat exchanger can exchange heat with the condensing heat exchanger via a cold-carrying pipe to heat the interior of the vehicle; the vehicle-mounted refrigerator can exchange heat with the evaporative heat exchanger via a cold-carrying pipe to cool the vehicle-mounted refrigerator; the motor can exchange heat with the evaporative heat exchanger via a cold-carrying pipe to cool the motor; the battery can exchange heat with the evaporative heat exchanger via a cold-carrying pipe to cool the battery, or exchange heat with the condensing heat exchanger via a cold-carrying pipe to heat the battery;

[0008] It also includes a multi-way valve, which has multiple interfaces. The cooling interface of the evaporative heat exchanger, the cooling interface of the condensing heat exchanger, the first in-vehicle heat exchanger, the second in-vehicle heat exchanger, the vehicle refrigerator, the motor and the battery are all connected to the interfaces of the multi-way valve. The interior of the multi-way valve has a channel for connecting and cutting off two of the multiple interfaces, so as to realize heat exchange between the first in-vehicle heat exchanger and the evaporative heat exchanger, heat exchange between the second in-vehicle heat exchanger and the condensing heat exchanger, heat exchange between the vehicle refrigerator and the evaporative heat exchanger, heat exchange between the motor and the evaporative heat exchanger, and heat exchange between the battery and the evaporative heat exchanger or the condensing heat exchanger.

[0009] In some embodiments,

[0010] When the vehicle needs to be cooled, the multi-way valve is controlled so that the first vehicle heat exchanger is connected to the refrigerant pipeline of the evaporative heat exchanger, and the second vehicle heat exchanger is not connected at this time; when the vehicle needs to be heated, the multi-way valve is controlled so that the second vehicle heat exchanger is connected to the refrigerant pipeline of the condensing heat exchanger, and the first vehicle heat exchanger is not connected at this time; when the vehicle refrigerator needs to be cooled, the multi-way valve is controlled so that the vehicle refrigerator is connected to the refrigerant pipeline of the evaporative heat exchanger; when the motor needs to be cooled, the multi-way valve is controlled so that the motor is connected to the refrigerant pipeline of the evaporative heat exchanger; when the battery needs to be cooled, the multi-way valve is controlled so that the battery is connected to the refrigerant pipeline of the evaporative heat exchanger; when the battery needs to be heated, the multi-way valve is controlled so that the battery is connected to the refrigerant pipeline of the condensing heat exchanger.

[0011] In some embodiments,

[0012] The multi-way valve includes a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface, an eighth interface, a ninth interface, a tenth interface, an eleventh interface, a twelfth interface, a thirteenth interface, and a fourteenth interface, wherein the first interface is connected to a cold interface at one end of the evaporative heat exchanger through a first cold interface pipeline, and the second interface is connected to a cold interface at the other end of the evaporative heat exchanger through a second cold interface pipeline, so that the coolant can exchange heat with the refrigerant in the evaporative heat exchanger;

[0013] The third interface is connected to one end interface of the first in-vehicle heat exchanger through a third cooling pipe, and the fourth interface is connected to the other end interface of the first in-vehicle heat exchanger through a fourth cooling pipe, so that a cooling medium can be passed into the first in-vehicle heat exchanger to cool the vehicle interior;

[0014] The fifth port is connected to one end of the second in-vehicle heat exchanger via a fifth cooling pipe, and the sixth port is connected to the other end of the second in-vehicle heat exchanger via a sixth cooling pipe, so that a cooling medium can be passed into the second in-vehicle heat exchanger to heat the vehicle interior.

[0015] The seventh interface is connected to one end interface of the motor through a seventh cooling pipe, and the eighth interface is connected to the other end interface of the motor through an eighth cooling pipe, so that a coolant can be introduced into the motor to cool the motor;

[0016] The ninth interface is connected to one end interface of the vehicle refrigerator via a ninth cooling pipe, and the tenth interface is connected to the other end interface of the vehicle refrigerator via a tenth cooling pipe, so that a cooling agent can be introduced into the vehicle refrigerator for refrigeration;

[0017] The eleventh interface is connected to one end interface of the battery through the eleventh cooling pipe, and the twelfth interface is connected to the other end interface of the battery through the twelfth cooling pipe, so that a coolant can be passed into the battery to cool or heat the battery;

[0018] The thirteenth interface is connected to one end interface of the condensing heat exchanger through the thirteenth cooling pipeline, and the fourteenth interface is connected to the other end interface of the condensing heat exchanger through the fourteenth cooling pipeline, so that the cooling agent can exchange heat with the refrigerant in the condensing heat exchanger.

[0019] In some embodiments,

[0020] It also includes an off-board heat exchanger, and the multi-way valve also includes a fifteenth interface and a sixteenth interface.

[0021] The fifteenth interface is connected to one end interface of the off-vehicle heat exchanger via a fifteenth cooling pipe, and the sixteenth interface is connected to the other end interface of the off-vehicle heat exchanger via the sixteenth cooling pipe, so that a cooling medium can be introduced into the off-vehicle heat exchanger to transfer heat or cold to the outside of the vehicle.

[0022] When cooling is required in the vehicle, the multi-way valve is controlled so that the external heat exchanger is connected to the refrigerant pipeline of the condensing heat exchanger. When heating is required in the vehicle, the multi-way valve is controlled so that the external heat exchanger is connected to the refrigerant pipeline of the evaporating heat exchanger.

[0023] In some embodiments,

[0024] It also includes a floor layer, which has a floor heat exchange pipe. One end of the floor heat exchange pipe is the floor heat exchange pipe inlet, and the other end is the floor heat exchange pipe outlet. The multi-way valve also includes a seventeenth interface and an eighteenth interface. The floor heat exchange pipe outlet is connected to the seventeenth interface through the seventeenth cooling pipe, and the floor heat exchange pipe inlet is connected to the eighteenth interface through the eighteenth cooling pipe. When the floor heating needs to be turned on, the multi-way valve is controlled so that the floor layer is connected to the refrigerant pipe of the condensing heat exchanger.

[0025] In some embodiments,

[0026] The floor layer is integrated with the battery, and a heat insulation layer is provided between the floor layer and the battery. The battery includes a battery unit layer and a battery cold plate layer. A battery heat exchange tube is provided inside the battery cold plate layer. One end of the battery heat exchange tube is a battery heat exchange tube inlet, and the other end is a battery heat exchange tube outlet.

[0027] The battery heat exchange tube inlet is connected to the eleventh cooling pipe, and the battery heat exchange tube outlet is connected to the twelfth cooling pipe.

[0028] In some embodiments,

[0029] The system further comprises a first water pump, a second water pump and a water tank, wherein the first water pump is arranged on the first secondary cooling pipeline and / or the second secondary cooling pipeline, the second water pump is arranged on the thirteenth secondary cooling pipeline and / or the fourteenth secondary cooling pipeline, and the water tank is arranged on the thirteenth secondary cooling pipeline and / or the fourteenth secondary cooling pipeline;

[0030] The refrigerant circulation loop is also provided with a flash evaporator, a second throttling device, a solenoid valve and a gas-liquid separator. The flash evaporator is arranged between the first throttling device and the evaporative heat exchanger, and the second throttling device is arranged between the flash evaporator and the evaporative heat exchanger. The air supply end of the flash evaporator is connected to the air supply port of the compressor through an air supply pipeline. The solenoid valve is arranged on the air supply pipeline, and the gas-liquid separator is arranged at the air intake port of the compressor.

[0031] In some embodiments,

[0032] The vehicle refrigerator has a higher cooling priority than the first in-vehicle heat exchanger. That is, when both the vehicle interior and the vehicle refrigerator need to be cooled, the multi-way valve is controlled so that the brine flows through the vehicle refrigerator first and then through the first in-vehicle heat exchanger.

[0033] The cooling priority of the first in-vehicle heat exchanger is higher than that of the battery. That is, when both the interior of the vehicle and the battery need to be cooled, the multi-way valve is controlled so that the coolant flows through the first in-vehicle heat exchanger first and then through the battery.

[0034] The cooling priority of the battery is higher than that of the motor, that is, when both the battery and the motor need to be cooled, the multi-way valve is controlled so that the coolant flows through the battery first and then through the motor.

[0035] The present invention also provides a control method for the aforementioned automotive thermal management system, comprising:

[0036] Determining whether the vehicle cooling mode needs to be turned on, or whether the vehicle heating mode needs to be turned on; determining whether the vehicle refrigerator needs to be turned on, and determining whether the motor needs to be cooled, and determining whether the battery needs to be cooled or heated;

[0037] The control step is as follows: when the vehicle needs to be cooled, the multi-way valve is controlled so that the first vehicle heat exchanger is connected to the refrigerant pipeline of the evaporative heat exchanger, and the second vehicle heat exchanger is not connected at this time; when the vehicle needs to be heated, the multi-way valve is controlled so that the second vehicle heat exchanger is connected to the refrigerant pipeline of the condensing heat exchanger, and the first vehicle heat exchanger is not connected at this time; when the vehicle refrigerator needs to be cooled, the multi-way valve is controlled so that the vehicle refrigerator is connected to the refrigerant pipeline of the evaporative heat exchanger; when the motor needs to be cooled, the multi-way valve is controlled so that the motor is connected to the refrigerant pipeline of the evaporative heat exchanger; when the battery needs to be cooled, the multi-way valve is controlled so that the battery is connected to the refrigerant pipeline of the evaporative heat exchanger; when the battery needs to be heated, the multi-way valve is controlled so that the battery is connected to the refrigerant pipeline of the condensing heat exchanger.

[0038] In some embodiments,

[0039] a control step, when only the in-vehicle cooling mode is to be activated, controlling the multi-way valve so that the first interface is communicated with the fourth interface within the multi-way valve, the second interface is communicated with the third interface within the multi-way valve, the thirteenth interface is communicated with the sixteenth interface within the multi-way valve, and the fourteenth interface is communicated with the fifteenth interface within the multi-way valve;

[0040] When only the in-car heating mode needs to be turned on, the multi-way valve is controlled so that the first interface is connected to the sixteenth interface inside the multi-way valve, the second interface is connected to the fifteenth interface inside the multi-way valve, the fourteenth interface is connected to the fifth interface inside the multi-way valve, the thirteenth interface is connected to the eighteenth interface inside the multi-way valve, and the seventeenth interface is connected to the sixth interface inside the multi-way valve, forming air conditioning cooling and floor heating.

[0041] In some embodiments,

[0042] In the control step, when the vehicle air conditioning and refrigerator cooling need to be turned on at the same time, the multi-way valve is controlled so that the first interface is communicated with the tenth interface inside the multi-way valve, the second interface is communicated with the third interface inside the multi-way valve, the fourth interface is communicated with the ninth interface inside the multi-way valve, the thirteenth interface is communicated with the sixteenth interface inside the multi-way valve, and the fourteenth interface is communicated with the fifteenth interface inside the multi-way valve;

[0043] When it is necessary to turn on the air conditioning refrigeration, refrigerator refrigeration and motor heat dissipation in the vehicle at the same time, the multi-way valve is controlled, the first interface is communicated with the tenth interface inside the multi-way valve, the second interface is communicated with the third interface inside the multi-way valve, the fourth interface is communicated with the ninth interface inside the multi-way valve, the thirteenth interface is communicated with the eighth interface inside the multi-way valve, the seventh interface is communicated with the sixteenth interface inside the multi-way valve, and the fourteenth interface is communicated with the fifteenth interface inside the multi-way valve;

[0044] When it is necessary to turn on the air conditioning cooling, refrigerator cooling and battery cooling in the car at the same time, the multi-way valve is controlled, the first interface is connected with the tenth interface inside the multi-way valve, the second interface is connected with the twelfth interface inside the multi-way valve, the eleventh interface is connected with the third interface inside the multi-way valve, the fourth interface is connected with the ninth interface inside the multi-way valve, the thirteenth interface is connected with the sixteenth interface inside the multi-way valve, and the fourteenth interface is connected with the fifteenth interface inside the multi-way valve.

[0045] In some embodiments,

[0046] The control step, when it is necessary to simultaneously turn on the vehicle air conditioner for heating and the refrigerator for cooling, controls the multi-way valve, so that the first interface is communicated with the tenth interface inside the multi-way valve, the ninth interface is communicated with the sixteenth interface inside the multi-way valve, the fifteenth interface is communicated with the second interface inside the multi-way valve, the fifth interface is communicated with the fourteenth interface inside the multi-way valve, the thirteenth interface is communicated with the eighteenth interface inside the multi-way valve, and the seventeenth interface is communicated with the sixth interface inside the multi-way valve;

[0047] When it is necessary to turn on the air conditioning heating, refrigerator cooling and motor heat dissipation in the vehicle at the same time, the multi-way valve is controlled, the first interface is communicated with the tenth interface inside the multi-way valve, the ninth interface is communicated with the eighth interface inside the multi-way valve, the seventh interface is communicated with the sixteenth interface inside the multi-way valve, the fifteenth interface is communicated with the second interface inside the multi-way valve, the fifth interface is communicated with the fourteenth interface inside the multi-way valve, the thirteenth interface is communicated with the eighteenth interface inside the multi-way valve, and the seventeenth interface is communicated with the sixth interface inside the multi-way valve;

[0048] When it is necessary to turn on the air conditioning heating, refrigerator cooling and battery heating in the vehicle at the same time, the multi-way valve is controlled, the first interface is communicated with the tenth interface inside the multi-way valve, the ninth interface is communicated with the sixteenth interface inside the multi-way valve, the fifteenth interface is communicated with the second interface inside the multi-way valve, the fifth interface is communicated with the eleventh interface inside the multi-way valve, the twelfth interface is communicated with the fourteenth interface inside the multi-way valve, the thirteenth interface is communicated with the eighteenth interface inside the multi-way valve, and the seventeenth interface is communicated with the sixth interface inside the multi-way valve;

[0049] When it is necessary to turn on the air conditioning heating, refrigerator cooling and battery cooling in the vehicle at the same time, the multi-way valve is controlled, the first interface is communicated with the tenth interface inside the multi-way valve, the ninth interface is communicated with the eleventh interface inside the multi-way valve, the twelfth interface is communicated with the sixteenth interface inside the multi-way valve, the fifteenth interface is communicated with the second interface inside the multi-way valve, the fifth interface is communicated with the fourteenth interface inside the multi-way valve, the thirteenth interface is communicated with the eighteenth interface inside the multi-way valve, and the seventeenth interface is communicated with the sixth interface inside the multi-way valve;

[0050] When it is necessary to turn on the air conditioning heating, refrigerator cooling, battery cooling and motor cooling in the car at the same time, the multi-way valve is controlled, the first interface is connected with the tenth interface inside the multi-way valve, the ninth interface is connected with the eleventh interface inside the multi-way valve, the twelfth interface is connected with the eighth interface inside the multi-way valve, the seventh interface is connected with the sixteenth interface inside the multi-way valve, the fifteenth interface is connected with the second interface inside the multi-way valve, the fifth interface is connected with the fourteenth interface inside the multi-way valve, the thirteenth interface is connected with the eighteenth interface inside the multi-way valve, and the seventeenth interface is connected with the sixth interface inside the multi-way valve.

[0051] The automotive thermal management system and control method provided by the present invention have the following beneficial effects:

[0052] 1. The present invention is provided with a first in-vehicle heat exchanger, a second in-vehicle heat exchanger, a vehicle-mounted refrigerator, a battery and a motor. When cooling is required, the first in-vehicle heat exchanger is connected to the cooling pipe of the evaporating heat exchanger to absorb cold energy to cool the vehicle interior; when heating is required, the second in-vehicle heat exchanger is connected to the cooling pipe of the condensing heat exchanger to absorb heat to heat the vehicle interior; thereby realizing indirect heat exchange with the cooling load in the vehicle and improving the safe cooling or heating in the vehicle. The present invention also integrates the battery, motor and vehicle-mounted refrigerator into the multi-way valve. While meeting the thermal management of conventional automobile batteries, motors and air conditioners, the vehicle-mounted refrigerator is integrated into the system. The low evaporating temperature of the indirect heat exchange system can meet the refrigeration and preservation requirements of 2 to 8°C in the refrigerator. The vehicle-mounted refrigerator does not need to occupy an additional refrigeration system. It is integrated into the thermal management system of the entire vehicle, effectively solving the problems of low energy efficiency, high cost and large space occupied by vehicle-mounted refrigerators. The vehicle refrigerator and the indoor and outdoor heat exchangers, motors, and battery heat exchangers are integrated through a multi-way valve, which achieves a compact structure while also achieving control optimization, precise control, and optimization of the pipelines; it can solve the problems of large space occupation, non-compact structure, and low control precision of multiple heat exchange components of the vehicle refrigerator; the present invention connects the evaporation heat exchanger, condensation heat exchanger, first and second indoor heat exchangers, vehicle refrigerator, battery, motor, and outdoor heat exchanger to the interface on the multi-way valve through the setting of the multi-way valve, thereby achieving effective structural integration of multiple heat exchangers. Through one multi-way valve, it is possible to effectively control the on and off of multiple heat exchangers, improve the heat exchange performance in the vehicle, improve energy efficiency, make the structure more compact, and greatly reduce the volume, further improve integration and functional diversification, ensure that the vehicle refrigerator can cool normally, and that the battery and motor are in the normal operating temperature range, thereby improving the operational reliability of the vehicle.

[0053] 2. The present invention can also achieve the effect of radiant heating in the vehicle and improve the heating performance by setting a floor layer, and can also achieve a compact structure and reduce the volume by integrating the floor layer with the battery heat exchanger. Moreover, by setting the battery under the floor layer, the battery panel can also support the floor. The present invention also sets the cooling priority as follows: vehicle refrigerator > first vehicle heat exchanger > battery > motor, and can preferentially cool the vehicle refrigerator by exchanging heat with the evaporative heat exchanger with the refrigerant with a lower temperature, and then exchange heat with the first vehicle heat exchanger to achieve cooling in the vehicle, and then cool the battery, and finally cool the motor. Since the temperature required for refrigerator cooling is lower than that in the vehicle, the temperature required in the vehicle is lower than that of the battery, and the temperature required for the battery is lower than that of the motor, it is possible to achieve step-by-step heat exchange according to the operating temperatures required by different components, maximize the use of the cooling capacity of the refrigerant, improve energy utilization efficiency, and improve the energy efficiency of the vehicle thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a schematic diagram of the structure of the thermal management battery + floor heating module of the present invention;

[0055] Figure 2 is a system structure diagram of the automotive thermal management system of the present invention;

[0056] Figure 3 This is a connection structure diagram of the automotive thermal management system of the present invention when only the air conditioning refrigeration cycle is in operation;

[0057] Figure 4 This is a diagram of the connectivity structure of the automotive thermal management system of the present invention during the air conditioning refrigeration + refrigerator refrigeration cycle;

[0058] Figure 5 This is a connection structure diagram of the automobile thermal management system of the present invention during the air conditioning refrigeration + refrigerator refrigeration + motor heat dissipation cycle;

[0059] Figure 6 This is a diagram of the connectivity structure of the automotive thermal management system of the present invention during the air conditioning refrigeration + refrigerator refrigeration + battery cooling cycle;

[0060] Figure 7 This is a diagram of the connectivity structure of the automotive thermal management system of the present invention when only the air conditioning and heating cycle is in progress;

[0061] Figure 8 This is a diagram of the connectivity structure of the automotive thermal management system of the present invention during the air conditioning heating + refrigerator refrigeration cycle;

[0062] Figure 9 This is a connection structure diagram of the automotive thermal management system of the present invention during the air conditioning heating + refrigerator cooling + motor heat dissipation cycle;

[0063] Figure 10This is a diagram of the connectivity structure of the automotive thermal management system of the present invention during the air conditioning heating + refrigerator cooling + battery heating cycle;

[0064] Figure 11 This is a diagram of the connectivity structure of the automotive thermal management system of the present invention during the air conditioning heating + refrigerator cooling + battery cooling cycle;

[0065] Figure 12 This is a connection structure diagram of the automobile thermal management system of the present invention during the air conditioning heating + refrigerator cooling + battery cooling + motor cooling cycle.

[0066] The reference numerals indicate:

[0067] 1. Compressor; 2. Condensing heat exchanger; 3. First throttling device; 4. Flash evaporator; 5. Solenoid valve; 6. Second throttling device; 7. Evaporative heat exchanger; 8. Gas-liquid separator; 9. First water pump; 10. Second water pump; 11. External heat exchanger; 12. Water tank; 13. First internal heat exchanger; 14. Second internal heat exchanger; 15. Multi-way valve; 16. Motor; 17. Onboard refrigerator; 18. Battery; 181. Battery cold plate layer; 182. Battery cell layer; 183. Insulation layer; 184. Floor layer; 18a. Battery heat exchange pipe inlet; 18b. Battery heat exchange pipe outlet; 18c. Floor heat exchange pipe inlet; 18d. Floor heat exchange pipe outlet; 18e. Battery heat exchange pipe; 18f. Floor heat exchange pipe

[0068] a, first interface; b, second interface; c, third interface; d, fourth interface; e, fifth interface; f, sixth interface; g, seventh interface; h, eighth interface; i, ninth interface; j, tenth interface; k, eleventh interface; l, twelfth interface; m, thirteenth interface; n, fourteenth interface; o, fifteenth interface; p, sixteenth interface; q, seventeenth interface; r, eighteenth interface;

[0069] 101. The first cooling pipe; 102. The second cooling pipe; 103. The third cooling pipe; 104. The fourth cooling pipe; 105. The fifth cooling pipe; 106. The sixth cooling pipe; 107. The seventh cooling pipe; 108. The eighth cooling pipe; 109. The ninth cooling pipe; 100. The tenth cooling pipe; 111. The eleventh cooling pipe; 112. The twelfth cooling pipe; 113. The thirteenth cooling pipe; 114. The fourteenth cooling pipe; 115. The fifteenth cooling pipe; 116. The sixteenth cooling pipe; 117. The seventeenth cooling pipe; 118. The eighteenth cooling pipe. DETAILED DESCRIPTION

[0070] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0071] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0072] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0073] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0076] like Figure 1-12 As shown, the present invention provides an automotive thermal management system, which includes:

[0077] Compressor 1, evaporating heat exchanger 7, condensing heat exchanger 2, first throttling device 3, first in-vehicle heat exchanger 13, second in-vehicle heat exchanger 14, vehicle refrigerator 17, motor 16 and battery 18. The compressor 1, the condensing heat exchanger 2, the first throttling device 3 and the evaporating heat exchanger 7 are connected to form a refrigerant circulation loop.

[0078] The first in-vehicle heat exchanger 13 can exchange heat with the evaporative heat exchanger 7 through a cold-carrying pipe to cool the interior of the vehicle, and the second in-vehicle heat exchanger 14 can exchange heat with the condensing heat exchanger 2 through a cold-carrying pipe to heat the interior of the vehicle; the vehicle-mounted refrigerator 17 can exchange heat with the evaporative heat exchanger 7 through a cold-carrying pipe to cool the refrigerator; the motor 16 can exchange heat with the evaporative heat exchanger 7 through a cold-carrying pipe to cool the motor; the battery 18 can exchange heat with the evaporative heat exchanger 7 through a cold-carrying pipe to cool the battery, or exchange heat with the condensing heat exchanger 2 through a cold-carrying pipe to heat the battery;

[0079] It also includes a multi-way valve 15, which has multiple interfaces. The cooling interface of the evaporative heat exchanger 7, the cooling interface of the condensing heat exchanger 2, the first in-vehicle heat exchanger 13, the second in-vehicle heat exchanger 14, the vehicle-mounted refrigerator 17, the motor 16 and the battery 18 are all connected to the interfaces of the multi-way valve 15. The interior of the multi-way valve 15 has a channel for connecting and cutting off two of the multiple interfaces, so as to realize heat exchange between the first in-vehicle heat exchanger 13 and the evaporative heat exchanger 7, heat exchange between the second in-vehicle heat exchanger 14 and the condensing heat exchanger 2, heat exchange between the vehicle-mounted refrigerator 17 and the evaporative heat exchanger 7, heat exchange between the motor 16 and the evaporative heat exchanger 7, and heat exchange between the battery 18 and the evaporative heat exchanger 7 or the condensing heat exchanger 2.

[0080] The present invention sets a first in-vehicle heat exchanger, a second in-vehicle heat exchanger, a vehicle-mounted refrigerator, a battery and a motor. When cooling is needed, the first in-vehicle heat exchanger is connected to the cooling pipe of the evaporating heat exchanger to absorb cold energy to cool the vehicle; when heating is needed, the second in-vehicle heat exchanger is connected to the cooling pipe of the condensing heat exchanger to absorb heat to heat the vehicle. Indirect heat exchange of the cold load in the vehicle is achieved, and safe cooling or heating in the vehicle is improved. The present invention also integrates the battery, motor and vehicle-mounted refrigerator into the multi-way valve. While meeting the thermal management of conventional automobile batteries, motors and air conditioners, the vehicle-mounted refrigerator is integrated into the system. The low evaporation temperature of the indirect heat exchange system is utilized to meet the refrigeration and preservation needs of 2 to 8°C in the refrigerator. The vehicle-mounted refrigerator does not need to occupy an additional refrigeration system. It is integrated into the thermal management system of the entire vehicle, effectively solving the problems of low energy efficiency, high cost and large space occupied by vehicle-mounted refrigerators. The vehicle refrigerator and the indoor and outdoor heat exchangers, motors, and battery heat exchangers are integrated through a multi-way valve, which achieves a compact structure while also achieving control optimization, precise control, and optimization of the pipelines; it can solve the problems of large space occupation, non-compact structure, and low control precision of multiple heat exchange components of the vehicle refrigerator; the present invention connects the evaporation heat exchanger, condensation heat exchanger, first and second indoor heat exchangers, vehicle refrigerator, battery, motor, and outdoor heat exchanger to the interface on the multi-way valve through the setting of the multi-way valve, thereby achieving effective structural integration of multiple heat exchangers. Through one multi-way valve, it is possible to effectively control the on and off of multiple heat exchangers, improve the heat exchange performance in the vehicle, improve energy efficiency, make the structure more compact, and greatly reduce the volume, further improve integration and functional diversification, ensure that the vehicle refrigerator can cool normally, and that the battery and motor are in the normal operating temperature range, thereby improving the operational reliability of the vehicle.

[0081] The vehicle-mounted refrigerator 17 of the present invention preferably obtains system cooling through water-based heat exchange pipes and is equipped with a low-speed fan to achieve faster cooling and more uniform temperature distribution. The thermal management mode and function of the present invention are primarily achieved through the switching of the multi-way valve 15. When the load has cooling or heating requirements, the multi-way valve 15 switches to connect the load to the main system, and otherwise disconnects the load from the main system.

[0082] In some embodiments,

[0083] When the vehicle needs to be cooled, the multi-way valve 15 is controlled so that the first vehicle heat exchanger 13 is connected to the refrigerant pipe of the evaporating heat exchanger 7, and the second vehicle heat exchanger 14 is not connected; when the vehicle needs to be heated, the multi-way valve 15 is controlled so that the second vehicle heat exchanger 14 is connected to the refrigerant pipe of the condensing heat exchanger 2, and the first vehicle heat exchanger 13 is not connected; when the vehicle refrigerator 17 needs to be cooled, the multi-way valve 15 is controlled so that the vehicle refrigerator 17 is connected to the refrigerant pipeline of the evaporative heat exchanger 7; when the motor 16 needs to be cooled, the multi-way valve 15 is controlled so that the motor 16 is connected to the refrigerant pipeline of the evaporative heat exchanger 7; when the battery 18 needs to be cooled, the multi-way valve 15 is controlled so that the battery 18 is connected to the refrigerant pipeline of the evaporative heat exchanger 7; when the battery 18 needs to be heated, the multi-way valve 15 is controlled so that the battery 18 is connected to the refrigerant pipeline of the condensing heat exchanger 2.

[0084] This is the preferred structural form of the automotive thermal management system of the present invention in cooling mode, heating mode and vehicle refrigerator, battery and motor heat exchange mode, that is, during cooling, by connecting the first in-vehicle heat exchanger to the refrigerant pipeline of the evaporative heat exchanger, the cooling capacity provided by the evaporation of the refrigerant in the evaporative heat exchanger can be used to cool the refrigerant, thereby cooling the air at the first in-vehicle heat exchanger, and then blowing the cold air into the vehicle to achieve convection cooling in the vehicle; during heating, by connecting the first in-vehicle heat exchanger to the refrigerant pipeline of the condensing heat exchanger, the heat provided by the condensation of the refrigerant in the condensing heat exchanger can be used to heat the refrigerant, thereby heating the air at the second in-vehicle heat exchanger, and then blowing the hot air into the vehicle to achieve convection heating in the vehicle; and the connection relationship between the in-vehicle refrigerator and the multi-way valve can be used to cool the refrigerator; the connection relationship between the multi-way valve and the motor and battery can be used to cool and dissipate heat for the motor and cool or heat the battery respectively, thereby improving the multifunctionality of the automotive thermal management and realizing switching between multiple modes to meet the various usage needs of users in the vehicle.

[0085] In some embodiments,

[0086] The multi-way valve 15 includes a first port a, a second port b, a third port c, a fourth port d, a fifth port e, a sixth port f, a seventh port g, an eighth port h, a ninth port i, a tenth port j, an eleventh port k, a twelfth port l, a thirteenth port m, and a fourteenth port n. The first port a is connected to a cold-carrying port at one end of the evaporative heat exchanger 7 via a first cold-carrying pipe 101, and the second port b is connected to a cold-carrying port at the other end of the evaporative heat exchanger 7 via a second cold-carrying pipe 102, so that the coolant can exchange heat with the refrigerant in the evaporative heat exchanger 7.

[0087] The third port c is connected to one end of the first in-vehicle heat exchanger 13 via the third cooling pipe 103, and the fourth port d is connected to the other end of the first in-vehicle heat exchanger 13 via the fourth cooling pipe 104, so that a cooling medium can be supplied to the first in-vehicle heat exchanger 13 to cool the vehicle interior.

[0088] The fifth port e is connected to one end of the second in-vehicle heat exchanger 14 via a fifth cooling pipe 105, and the sixth port f is connected to the other end of the second in-vehicle heat exchanger 14 via a sixth cooling pipe 106, so that cooling medium can be supplied to the second in-vehicle heat exchanger 14 to heat the vehicle interior.

[0089] The seventh port g is connected to one end of the motor 16 via a seventh cooling pipe 107, and the eighth port h is connected to the other end of the motor 16 via an eighth cooling pipe 108, so that a coolant can be passed into the motor 16 for cooling.

[0090] The ninth port i is connected to one end of the vehicle refrigerator 17 via a ninth cooling pipe 109, and the tenth port j is connected to the other end of the vehicle refrigerator 17 via a tenth cooling pipe 100, so that a cooling agent can be introduced into the vehicle refrigerator 17 for refrigeration.

[0091] The eleventh port k is connected to one end of the battery 18 via the eleventh cooling pipe 111, and the twelfth port l is connected to the other end of the battery 18 via the twelfth cooling pipe 112, so that a coolant can be passed into the battery 18 for cooling or heating the battery;

[0092] The thirteenth interface m is connected to one end interface of the condensing heat exchanger 2 through the thirteenth cooling pipe 113, and the fourteenth interface n is connected to the other end interface of the condensing heat exchanger 2 through the fourteenth cooling pipe 114, so that the cooling agent can exchange heat with the refrigerant in the condensing heat exchanger 2.

[0093] This is the specific structural form of the multi-way valve of the present invention and the connection relationship between it and multiple heat exchangers. It preferably includes at least fourteen interfaces, which are connected to the evaporative heat exchanger, the first in-vehicle heat exchanger, the second in-vehicle heat exchanger, the vehicle refrigerator, the motor, the battery and the condensing heat exchanger through fourteen branch pipes, and are integrated with the multi-way valve to achieve cooling in the vehicle and / or cooling of the vehicle refrigerator and / or cooling of the motor and / or cooling or heating of the battery, and to achieve multiple modes such as heating in the vehicle and / or cooling of the vehicle refrigerator and / or cooling of the motor and / or cooling or heating of the battery, thereby improving the functionality of the vehicle thermal management system and improving user comfort.

[0094] In some embodiments,

[0095] The vehicle also includes an external heat exchanger 11, and the multi-way valve 15 further includes a fifteenth port o and a sixteenth port p.

[0096] The fifteenth port o is connected to one end of the external heat exchanger 11 via a fifteenth cooling pipe 115, and the sixteenth port p is connected to the other end of the external heat exchanger 11 via a sixteenth cooling pipe 116, so that a cooling medium can be introduced into the external heat exchanger 11 to transfer heat or cold to the outside of the vehicle.

[0097] When the vehicle needs to be cooled, the multi-way valve 15 is controlled so that the external heat exchanger 11 is connected to the refrigerant pipeline of the condensing heat exchanger 2. When the vehicle needs to be heated, the multi-way valve 15 is controlled so that the external heat exchanger 11 is connected to the refrigerant pipeline of the evaporating heat exchanger 7.

[0098] The present invention also provides an external heat exchanger, which can transfer the heat inside the car to the external heat exchanger and discharge it outside the car in cooling mode; and transfer the cold inside the car to the external heat exchanger and discharge it outside the car in heating mode, ensuring that the car can be continuously and effectively cooled or heated; when cooling, the external heat exchanger is connected to the condensing heat exchanger, and the condensing heat exchanger can use the temperature change of the refrigerant to absorb the heat inside the car, increase the temperature of the refrigerant, and then transfer it to the coolant through the condenser, and finally discharge the heat outside the car through the external heat exchanger; when heating, the external heat exchanger is connected to the evaporating heat exchanger, and the evaporating heat exchanger can use the temperature change of the refrigerant to absorb the cold inside the car, reduce the temperature of the refrigerant, and then transfer it to the coolant through the evaporator, and finally discharge the cold outside the car; at the same time, it realizes the integrated thermal management effect of the car, the on-board refrigerator, the battery and the motor, ensuring the comfort and reliability of the car operation.

[0099] In some embodiments,

[0100] It also includes a floor layer 184, which has a floor heat exchange pipe 18f. One end of the floor heat exchange pipe 18f is a floor heat exchange pipe inlet 18c, and the other end is a floor heat exchange pipe outlet 18d. The multi-way valve 15 also includes a seventeenth interface q and an eighteenth interface r. The floor heat exchange pipe outlet 18d is connected to the seventeenth interface q through the seventeenth cooling pipe 117, and the floor heat exchange pipe inlet 18c is connected to the eighteenth interface r through the eighteenth cooling pipe 118. When the floor heating needs to be turned on, the multi-way valve 15 is controlled so that the floor layer 184 is connected to the cooling agent pipeline of the condensing heat exchanger 2.

[0101] The present invention also provides a floor layer with floor heat exchange pipes inside, which can achieve radiant heating effect in the car, improve heating performance, and enhance functionality, thereby further improving user comfort.

[0102] In some embodiments,

[0103] The floor layer 184 is integrated with the battery 18 (preferably, the floor layer is located above the battery, that is, the battery is located below the floor). An insulation layer 183 is provided between the floor layer 184 and the battery 18. The battery 18 includes a battery cell layer 182 and a battery cold plate layer 181. The battery cold plate layer 181 has a battery heat exchange tube 18e inside. One end of the battery heat exchange tube 18e is a battery heat exchange tube inlet 18a, and the other end is a battery heat exchange tube outlet 18b.

[0104] The battery heat exchange pipe inlet 18 a is in communication with the eleventh cooling pipe 111 , and the battery heat exchange pipe outlet 18 b is in communication with the twelfth cooling pipe 112 .

[0105] The present invention integrates the floor layer and the battery heat exchanger into one, thereby achieving a compact structure and reducing the volume; and by arranging the battery under the floor layer, the battery panels can also support the floor.

[0106] The present invention provides an integrated module solution for automobile power battery and floor heating, such as Figure 1. The battery 18 module is mainly divided into four layers, including a battery cold plate layer 181, a battery cell layer 182, an insulation layer 183, and a floor layer 184. The battery cold plate layer 181 contains a battery heat exchange tube 18e, and the battery heat exchange tube inlet 18a and the battery heat exchange tube outlet 18b are respectively connected to the multi-way valve 15. The battery cell layer 182 is in close contact with the battery cold plate layer 181, and heat exchange can be fully carried out between the two layers. An insulation layer 183 is arranged between the battery cell layer 182 and the floor layer 184 to isolate the heat exchange between the upper and lower layers. The floor heat exchange tube 18f is laid in the floor layer 184, and the floor heat exchange tube inlet 18c and the floor heat exchange tube outlet 18d are respectively connected to the multi-way valve 15. The floor layer 184 can be directly used as the floor inside the vehicle.

[0107] Figure 1 A modular solution for automotive batteries and floor heating is provided, in which the battery cold plate layer 181 and the battery cell layer 182 are tightly integrated to ensure sufficient heat transfer between the two layers. The coolant enters through the battery heat exchange tube inlet 18a, exchanges heat with the battery cold plate layer 181 through the battery heat exchange tube 18e, and then flows out of the battery heat exchange tube outlet 18b, thereby cooling or heating the battery 18. In the floor layer 184, the coolant enters through the floor heat exchange tube inlet 18c, exchanges heat with the floor layer 184 through the floor heat exchange tube 18f, and then flows out of the floor heat exchange tube outlet 18d, thereby heating the floor layer 184. This further warms the passenger compartment space through radiation and convection. To prevent mode conflict between floor heating and battery cooling, the insulation layer 183 effectively isolates the heat transfer between the two layers, ensuring precise matching of the loads on both sides.

[0108] The present invention designs a multi-mode automotive thermal management system that, while meeting the thermal management requirements of conventional automotive batteries, motors, and air conditioners, integrates an on-board refrigerator into the system. By utilizing the low evaporation temperature of the indirect heat exchange system, it can meet the 2-8°C refrigeration and preservation requirements within the refrigerator. Furthermore, floor heat exchange tubes are introduced into the system, primarily using floor heating to heat the cab and improve the thermal comfort of the cockpit. This multifunctional thermal management system comprehensively manages the energy of batteries, motors, air conditioners, refrigerators, and floor heating, ensuring the normal operation of each load while also recovering waste heat from motors and batteries. It features high integration, multiple functions, and excellent comfort, and compared to conventional stand-alone on-board air conditioners, it offers significant advantages in both performance and cost.

[0109] Can solve the following technical problems:

[0110] 1. Car refrigerators have low efficiency, high cost, and take up a lot of space;

[0111] 2. The car air conditioner heating system causes uneven temperature distribution and poor comfort in the car.

[0112] In some embodiments,

[0113] The system further includes a first water pump 9, a second water pump 10, and a water tank 12. The first water pump 9 is disposed on the first secondary cooling pipeline 101 and / or the second secondary cooling pipeline 102. The second water pump 10 is disposed on the thirteenth secondary cooling pipeline 113 and / or the fourteenth secondary cooling pipeline 114. The water tank 12 is disposed on the thirteenth secondary cooling pipeline 113 and / or the fourteenth secondary cooling pipeline 114.

[0114] The refrigerant circulation loop is also provided with a flash evaporator 4, a second throttling device 6, a solenoid valve 5 and a gas-liquid separator 8. The flash evaporator 4 is arranged between the first throttling device 3 and the evaporative heat exchanger 7, and the second throttling device 6 is arranged between the flash evaporator 4 and the evaporative heat exchanger 7. The air supply end of the flash evaporator 4 is connected to the air supply port of the compressor 1 through an air supply pipeline. The solenoid valve 5 is arranged on the air supply pipeline, and the gas-liquid separator 8 is arranged at the air intake port of the compressor 1.

[0115] The present invention can provide power to drive the flow of water through the first water pump and the second water pump, ensuring that it has a good heat exchange effect on components such as the vehicle interior, motor, and battery when flowing through multiple heat exchangers. The water tank is used to provide a water source, and the flash evaporator and other results can replenish air and increase enthalpy for the compressor, thereby improving operating performance, especially under low-temperature conditions.

[0116] The automobile management system of the present invention is an indirect heat exchange system, that is, the refrigerant side system including a compressor 1, a condensing heat exchanger 2 (preferably a plate heat exchanger), a first throttling device 3 (preferably an electronic expansion valve), a flash evaporator 4, a solenoid valve 5, a second throttling device 6 (preferably an electronic expansion valve), an evaporating heat exchanger 7 (preferably a plate heat exchanger), and a gas-liquid separator 8 is arranged outside the passenger compartment, the water system including a first water pump 9, a second water pump 10, an external heat exchanger 11, a water tank 12, and a multi-way valve 15 is arranged outside the passenger compartment, and the water system including a first in-vehicle heat exchanger 13 and a second in-vehicle heat exchanger 14 is arranged inside the passenger compartment.

[0117] like Figure 2 The present invention provides a thermal management system that uses indirect heat exchange to comprehensively manage various loads (air conditioners, motors, refrigerators, batteries, etc.). In particular, the system is equipped with a flash evaporator 4 and a solenoid valve 5 to further improve low-temperature heating performance by increasing enthalpy through air injection.

[0118] In some embodiments,

[0119] The cooling priority of the vehicle refrigerator 17 is higher than that of the first in-vehicle heat exchanger 13 , that is, when both the vehicle interior and the vehicle refrigerator 17 need to be cooled, the multi-way valve 15 is controlled so that the brine flows through the vehicle refrigerator 17 first and then through the first in-vehicle heat exchanger 13 ;

[0120] The cooling priority of the first in-vehicle heat exchanger 13 is higher than that of the battery 18 , that is, when both the interior of the vehicle and the battery 18 need to be cooled, the multi-way valve 15 is controlled so that the brine flows through the first in-vehicle heat exchanger 13 first and then through the battery 18 ;

[0121] The cooling priority of the battery 18 is higher than that of the motor 16 , that is, when both the battery 18 and the motor 16 need to be cooled, the multi-way valve 15 is controlled so that the coolant flows through the battery 18 first and then through the motor 16 .

[0122] The present invention also sets the refrigeration priority as follows: vehicle refrigerator > first in-vehicle heat exchanger > battery > motor. The vehicle refrigerator can be cooled preferentially by the refrigerant with a lower temperature exchanged with the evaporative heat exchanger, and then the first in-vehicle heat exchanger is used for heat exchange to cool the interior of the vehicle, and then the battery is cooled, and finally the motor is cooled. Since the temperature required for refrigerator refrigeration is lower than that inside the vehicle, the temperature required inside the vehicle is lower than that required by the battery, and the temperature required by the battery is lower than that required by the motor, step-by-step heat exchange can be achieved according to the operating temperatures required by different components, thereby maximizing the use of the cooling capacity of the refrigerant, improving energy utilization efficiency, and improving the energy efficiency of the vehicle thermal management system.

[0123] The present invention also provides a control method for the aforementioned automotive thermal management system, comprising:

[0124] Determining whether the vehicle cooling mode needs to be turned on, or whether the vehicle heating mode needs to be turned on; determining whether the vehicle refrigerator needs to be turned on, and determining whether the motor needs to be cooled, and determining whether the battery needs to be cooled or heated;

[0125] The control step is as follows: when the vehicle interior needs cooling, the multi-way valve 15 is controlled so that the first vehicle interior heat exchanger 13 is connected to the refrigerant pipe of the evaporating heat exchanger 7, and the second vehicle interior heat exchanger 14 is not connected; when the vehicle interior needs heating, the multi-way valve 15 is controlled so that the second vehicle interior heat exchanger 14 is connected to the refrigerant pipe of the condensing heat exchanger 2, and the first vehicle interior heat exchanger 13 is not connected; when the vehicle interior needs cooling, the multi-way valve 15 is controlled so that the vehicle interior heat exchanger 14 is connected to the refrigerant pipe of the condensing heat exchanger 2, and the first vehicle interior heat exchanger 13 is not connected. The refrigerator 17 is connected to the refrigerant pipeline of the evaporative heat exchanger 7; when the motor 16 needs to be cooled, the multi-way valve 15 is controlled so that the motor 16 is connected to the refrigerant pipeline of the evaporative heat exchanger 7; when the battery 18 needs to be cooled, the multi-way valve 15 is controlled so that the battery 18 is connected to the refrigerant pipeline of the evaporative heat exchanger 7; when the battery 18 needs to be heated, the multi-way valve 15 is controlled so that the battery 18 is connected to the refrigerant pipeline of the condensing heat exchanger 2.

[0126] This is the preferred control form of the automobile thermal management system of the present invention in different operating modes when it has a multi-way valve. When cooling is required, by connecting the first in-vehicle heat exchanger to the refrigerant pipeline of the evaporative heat exchanger, the cooling capacity provided by the evaporation of the refrigerant in the evaporative heat exchanger can be used to cool the refrigerant, thereby cooling the air at the first in-vehicle heat exchanger, and then blowing the cold air into the vehicle to achieve convection cooling of the vehicle; when heating, by connecting the first in-vehicle heat exchanger to the refrigerant pipeline of the condensing heat exchanger, the heat provided by the condensation of the refrigerant in the condensing heat exchanger can be used to heat the refrigerant, thereby heating the air at the second in-vehicle heat exchanger, and then blowing the hot air into the vehicle to achieve convection heating of the vehicle; and the connection relationship between the vehicle refrigerator and the multi-way valve can be used to achieve refrigeration of the refrigerator; the connection relationship between the multi-way valve and the motor and battery can be used to respectively achieve cooling and heat dissipation of the motor and cooling or heating of the battery, thereby improving the multifunctionality of the vehicle thermal management and realizing switching between multiple modes to meet the various usage needs of users in the vehicle.

[0127] In some embodiments,

[0128] When only the vehicle interior cooling mode is to be activated, the multi-way valve 15 is controlled so that the first port a is communicated with the fourth port d inside the multi-way valve 15, the second port b is communicated with the third port c inside the multi-way valve 15, the thirteenth port m is communicated with the sixteenth port p inside the multi-way valve 15, and the fourteenth port n is communicated with the fifteenth port o inside the multi-way valve 15;

[0129] When only the in-vehicle heating mode needs to be turned on, the multi-way valve 15 is controlled so that the first interface a is connected to the sixteenth interface p inside the multi-way valve 15, the second interface b is connected to the fifteenth interface o inside the multi-way valve 15, the fourteenth interface n is connected to the fifth interface e inside the multi-way valve 15, the thirteenth interface m is connected to the eighteenth interface r inside the multi-way valve 15, and the seventeenth interface q is connected to the sixth interface f inside the multi-way valve 15, forming air conditioning cooling and floor heating.

[0130] This is a further preferred control form of the present invention that only performs in-car cooling and in-car heating. When cooling is needed, by connecting the first in-car heat exchanger to the refrigerant pipeline of the evaporative heat exchanger, the cooling capacity provided by the evaporation of the refrigerant in the evaporative heat exchanger can be used to cool the refrigerant, thereby cooling the air at the first in-car heat exchanger, and then blowing the cold air into the car to achieve convection cooling in the car; when heating, by connecting the first in-car heat exchanger to the refrigerant pipeline of the condensing heat exchanger, the heat provided by the condensation of the refrigerant in the condensing heat exchanger can be used to heat the refrigerant, thereby heating the air at the second in-car heat exchanger, and then blowing the hot air into the car to achieve convection heating in the car.

[0131] Combine Figure 3 During cooling operation, on the refrigerant side, the refrigerant is compressed by the compressor and enters the condensing heat exchanger 2. The first throttling device 3 is in the fully open, unthrottled state, and the solenoid valve 5 is in the closed state. The refrigerant flows through the first throttling device 3, the flash evaporator 4, and then throttled by the second throttling device 6 before entering the evaporating heat exchanger 7 for heat exchange. Finally, it flows back to the compressor 1 through the gas-liquid separator 8 to form a refrigerant refrigeration cycle. On the waterway side, the first water pump 9 and the second water pump 10 are in the open state, and the switching connection state of the multi-way valve 15 is: the outlet of the condensing heat exchanger 2 - the inlet of the external heat exchanger 11, the outlet of the water tank 12 - the inlet of the first water pump 9, the outlet of the second water pump 10 - the inlet of the first internal heat exchanger 13, and the outlet of the first internal heat exchanger 13 - the inlet of the evaporating heat exchanger 7. The brine circulating on the condensing side is fed by the first water pump 9 through the condensing heat exchanger 2, where it exchanges heat with the refrigerant inside. It then flows through the multi-way valve 15 to the exterior heat exchanger 11 for heat exchange with the air. It then flows through the water tank 12 and the multi-way valve 15 back to the first water pump 9, completing the cycle. The brine circulating on the evaporating side is fed by the second water pump 10 through the multi-way valve 15 to the first interior heat exchanger 13. It then flows through the multi-way valve 15 back to the evaporating heat exchanger 7 for heat exchange with the refrigerant, and finally flows back to the second water pump 10, completing the cycle.

[0132] Combine Figure 7During heating operation, on the refrigerant side, the refrigerant is compressed by the compressor and enters the condensing heat exchanger 2. The first throttling device 3 is in the throttling state, and the solenoid valve 5 is in the open state. The refrigerant flows through the first throttling device 3 and enters the flash evaporator 4 after throttling. The medium-pressure gas passes through the solenoid valve 5 and enters the medium-pressure chamber of the compressor 1. The liquid refrigerant is then throttled by the second throttling device 6 and enters the evaporating heat exchanger 7 for heat exchange. Finally, it flows back to the compressor 1 through the gas-liquid separator 8 to form a refrigerant heating cycle. On the waterway side, the first water pump 9 and the second water pump 10 are in the open state, and the switching connection states of the multi-way valve 15 are: the outlet of the condensing heat exchanger 2 - the inlet of the floor heat exchange pipe 18c, the outlet of the floor heat exchange pipe 18d - the inlet of the second interior heat exchanger 14, the outlet of the second interior heat exchanger 14 - the inlet of the first water pump 9, the outlet of the second water pump 10 - the inlet of the exterior heat exchanger 11, and the outlet of the water tank 12 - the inlet of the evaporating heat exchanger 7. The brine circulating on the condensing side is pumped by the first water pump 9 through the condensing heat exchanger 2, where it exchanges heat with the refrigerant inside. It then passes through a multi-way valve 15, sequentially connecting to the floor heat exchange pipe 18f and then the second interior heat exchanger 14. After exchanging heat in the floor and then in the air conditioning unit, it returns to the first water pump 9, completing the cycle (both floor heating and air conditioning heating are enabled). The brine circulating on the evaporating side is pumped by the second water pump 10, connected through a multi-way valve 15, to the exterior heat exchanger 11. It then passes through the water tank 12 and the multi-way valve 15, returning to the evaporating heat exchanger 7 for heat exchange with the refrigerant, before finally returning to the second water pump 10, completing the cycle. Specifically, the brine that has exchanged heat in the condensing heat exchanger 2 first exchanges heat through the battery module floor layer 184 via radiation, and finally exchanges heat with the second interior heat exchanger 14 in the air conditioning unit, improving interior heating efficiency and comfort. The corresponding brine on the evaporating side absorbs ambient heat in the exterior heat exchanger 11 and is supplied to the evaporating heat exchanger 7.

[0133] In some embodiments,

[0134] In the control step, when the vehicle air conditioning and refrigerator cooling need to be turned on at the same time, the multi-way valve 15 is controlled so that the first port a is connected to the tenth port j inside the multi-way valve 15, the second port b is connected to the third port c inside the multi-way valve 15, the fourth port d is connected to the ninth port i inside the multi-way valve 15, the thirteenth port m is connected to the sixteenth port p inside the multi-way valve 15, and the fourteenth port n is connected to the fifteenth port o inside the multi-way valve 15;

[0135] When it is necessary to turn on the air conditioning refrigeration, refrigerator refrigeration and motor heat dissipation in the vehicle at the same time, the multi-way valve 15 is controlled, the first interface a is communicated with the tenth interface j inside the multi-way valve 15, the second interface b is communicated with the third interface c inside the multi-way valve 15, the fourth interface d is communicated with the ninth interface i inside the multi-way valve 15, the thirteenth interface m is communicated with the eighth interface h inside the multi-way valve 15, the seventh interface g is communicated with the sixteenth interface p inside the multi-way valve 15, and the fourteenth interface n is communicated with the fifteenth interface o inside the multi-way valve 15;

[0136] When it is necessary to turn on the air conditioning, refrigerator cooling and battery cooling in the vehicle at the same time, the multi-way valve 15 is controlled, the first interface a is connected to the tenth interface j inside the multi-way valve 15, the second interface b is connected to the twelfth interface l inside the multi-way valve 15, the eleventh interface k is connected to the third interface c inside the multi-way valve 15, the fourth interface d is connected to the ninth interface i inside the multi-way valve 15, the thirteenth interface m is connected to the sixteenth interface p inside the multi-way valve 15, and the fourteenth interface n is connected to the fifteenth interface o inside the multi-way valve 15.

[0137] This is the preferred control form of the in-car air conditioning refrigeration and refrigerator refrigeration mode, in-car air conditioning refrigeration, refrigerator refrigeration and motor heat dissipation mode, in-car air conditioning refrigeration, refrigerator refrigeration and battery cooling mode of the present invention, combined with Figure 4 The present invention provides a system circulation scheme for simultaneous air conditioning and refrigerator cooling. The refrigerant-side circulation is consistent with the air conditioning and refrigeration cycle described above. The switching connection states of the waterway-side multi-way valve 15 are: the outlet of the condensing heat exchanger 2 - the inlet of the external heat exchanger 11, the outlet of the water tank 12 - the inlet of the first water pump 9, the outlet of the second water pump 10 - the inlet of the onboard refrigerator 17, the outlet of the onboard refrigerator 17 - the inlet of the first internal heat exchanger 13, and the outlet of the first internal heat exchanger 13 - the inlet of the evaporative heat exchanger 7. Specifically, to ensure that the onboard refrigerator 17 can maintain a relatively low temperature, the refrigerant heated by the evaporative heat exchanger 7 first enters the onboard refrigerator 17 for cooling. The refrigerant system can be adjusted by the second throttling device 6 to achieve an evaporation temperature below 0°C, thereby ensuring good cooling effect and efficiency within the onboard refrigerator 17.

[0138] Combine Figure 5The present invention provides an air conditioning refrigeration + refrigerator refrigeration + motor heat dissipation cycle solution. The refrigerant side cycle is consistent with the above-mentioned air conditioning refrigeration cycle. The switching connection state of the multi-way valve 15 on the water side is: condensing heat exchanger 2 outlet-motor 16 inlet, motor 16 outlet-vehicle external heat exchanger 11 inlet, water tank 12 outlet-first water pump 9 inlet, second water pump 10 outlet-vehicle refrigerator 17 inlet, vehicle refrigerator 17 outlet-first vehicle interior heat exchanger 13 inlet, first vehicle interior heat exchanger 13 outlet-evaporative heat exchanger 7 inlet. Compared with the above-mentioned cycle, the heat of the motor 16 is carried by the refrigerant to the external heat exchanger 11 for dissipation, and the refrigerant cycle is not repeated here.

[0139] Combine Figure 6 The present invention provides an air conditioning refrigeration + refrigerator refrigeration + battery cooling cycle solution. The refrigerant side cycle is consistent with the above-mentioned air conditioning refrigeration cycle. The switching connection state of the multi-way valve 15 on the water side is: condensing heat exchanger 2 outlet-vehicle external heat exchanger 11 inlet, water tank 12 outlet-first water pump 9 inlet, second water pump 10 outlet-vehicle refrigerator 17 inlet, vehicle refrigerator 17 outlet-first vehicle interior heat exchanger 13 inlet, first vehicle interior heat exchanger 13 outlet-battery heat exchange tube inlet 18a, battery heat exchange tube outlet 18b-evaporative heat exchanger 7 inlet, wherein the brine cycle is not repeated.

[0140] In some embodiments,

[0141] In the control step, when it is necessary to simultaneously turn on the vehicle air conditioner for heating and the refrigerator for cooling, the multi-way valve 15 is controlled so that the first port a is communicated with the tenth port j inside the multi-way valve 15, the ninth port i is communicated with the sixteenth port p inside the multi-way valve 15, the fifteenth port o is communicated with the second port b inside the multi-way valve 15, the fifth port e is communicated with the fourteenth port n inside the multi-way valve 15, the thirteenth port m is communicated with the eighteenth port r inside the multi-way valve 15, and the seventeenth port q is communicated with the sixth port f inside the multi-way valve 15;

[0142] When it is necessary to turn on the air conditioning heating, refrigerator cooling and motor heat dissipation in the vehicle at the same time, the multi-way valve 15 is controlled, the first interface a is communicated with the tenth interface j inside the multi-way valve 15, the ninth interface i is communicated with the eighth interface h inside the multi-way valve 15, the seventh interface g is communicated with the sixteenth interface p inside the multi-way valve 15, the fifteenth interface o is communicated with the second interface b inside the multi-way valve 15, the fifth interface e is communicated with the fourteenth interface n inside the multi-way valve 15, the thirteenth interface m is communicated with the eighteenth interface r inside the multi-way valve 15, and the seventeenth interface q is communicated with the sixth interface f inside the multi-way valve 15;

[0143] When it is necessary to turn on the air conditioning heating, refrigerator cooling and battery heating in the vehicle at the same time, the multi-way valve 15 is controlled, the first interface a is communicated with the tenth interface j inside the multi-way valve 15, the ninth interface i is communicated with the sixteenth interface p inside the multi-way valve 15, the fifteenth interface o is communicated with the second interface b inside the multi-way valve 15, the fifth interface e is communicated with the eleventh interface k inside the multi-way valve 15, the twelfth interface l is communicated with the fourteenth interface n inside the multi-way valve 15, the thirteenth interface m is communicated with the eighteenth interface r inside the multi-way valve 15, and the seventeenth interface q is communicated with the sixth interface f inside the multi-way valve 15;

[0144] When it is necessary to turn on the air conditioning heating, refrigerator cooling, and battery cooling in the vehicle at the same time, the multi-way valve 15 is controlled, the first interface a is communicated with the tenth interface j inside the multi-way valve 15, the ninth interface i is communicated with the eleventh interface k inside the multi-way valve 15, the twelfth interface l is communicated with the sixteenth interface p inside the multi-way valve 15, the fifteenth interface o is communicated with the second interface b inside the multi-way valve 15, the fifth interface e is communicated with the fourteenth interface n inside the multi-way valve 15, the thirteenth interface m is communicated with the eighteenth interface r inside the multi-way valve 15, and the seventeenth interface q is communicated with the sixth interface f inside the multi-way valve 15;

[0145] When it is necessary to turn on the air conditioning heating, refrigerator cooling, battery cooling and motor cooling in the car at the same time, the multi-way valve 15 is controlled, the first interface a is connected with the tenth interface j inside the multi-way valve 15, the ninth interface i is connected with the eleventh interface k inside the multi-way valve 15, the twelfth interface l is connected with the eighth interface h inside the multi-way valve 15, the seventh interface g is connected with the sixteenth interface p inside the multi-way valve 15, the fifteenth interface o is connected with the second interface b inside the multi-way valve 15, the fifth interface e is connected with the fourteenth interface n inside the multi-way valve 15, the thirteenth interface m is connected with the eighteenth interface r inside the multi-way valve 15, and the seventeenth interface q is connected with the sixth interface f inside the multi-way valve 15.

[0146] This is the preferred control form of the in-car air conditioning heating and refrigerator cooling mode, in-car air conditioning heating, refrigerator cooling and motor heat dissipation mode, in-car air conditioning heating, refrigerator cooling and battery heating mode, in-car air conditioning heating, refrigerator cooling and battery cooling mode, respectively, combined with Figure 8The present invention provides an air conditioning heating + refrigerator refrigeration cycle solution. The refrigerant side cycle is consistent with the above-mentioned air conditioning heating cycle. The switching connection state of the multi-way valve 15 on the water side is: condensing heat exchanger 2 outlet-floor heat exchange pipe inlet 18c, floor heat exchange pipe outlet 18d-second vehicle interior heat exchanger 14 inlet, second vehicle interior heat exchanger 14 outlet-first water pump 9 inlet, second water pump 10 outlet-vehicle refrigerator 17 inlet, vehicle refrigerator 17 outlet-vehicle exterior heat exchanger 11 inlet, water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the brine cycle is not repeated.

[0147] Combine Figure 9 The present invention provides an air conditioning heating + refrigerator cooling + motor heat dissipation cycle solution. The refrigerant side cycle is consistent with the above-mentioned air conditioning heating cycle. The switching connection state of the multi-way valve 15 on the water side is: condensing heat exchanger 2 outlet - floor heat exchange pipe inlet 18c, floor heat exchange pipe outlet 18d - second vehicle interior heat exchanger 14 inlet, second vehicle interior heat exchanger 14 outlet - first water pump 9 inlet, second water pump 10 outlet - vehicle refrigerator 17 inlet, vehicle refrigerator 17 outlet - motor 16 inlet, motor 16 outlet - vehicle exterior heat exchanger 11 inlet, water tank 12 outlet - evaporative heat exchanger 7 inlet. The refrigerant cycle is not repeated here. This solution can realize the recovery of motor heat ( Figure 9 The refrigerant on the evaporation side absorbs the heat of the motor to achieve heat recovery from the motor to the heat pump system. Figure 5 It only dissipates heat to the motor and the heat is released to the environment).

[0148] Combine Figure 10 The present invention provides an air conditioning heating + refrigerator cooling + battery heating cycle solution. The refrigerant side cycle is consistent with the above-mentioned air conditioning heating cycle. The switching connection state of the multi-way valve 15 on the water side is: condensing heat exchanger 2 outlet-floor heat exchange pipe inlet 18c, floor heat exchange pipe outlet 18d-second vehicle interior heat exchanger 14 inlet, second vehicle interior heat exchanger 14 outlet-battery heat exchange pipe inlet 18a, battery heat exchange pipe outlet 18b-first water pump 9 inlet, second water pump 10 outlet-vehicle refrigerator 17 inlet, vehicle refrigerator 17 outlet-vehicle exterior heat exchanger 11 inlet, water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the brine cycle is not repeated.

[0149] Combine Figure 11The present invention provides a combined air conditioning heating, refrigerator cooling, and battery cooling cycle. The refrigerant-side cycle is identical to the aforementioned air conditioning heating cycle. The waterway-side multi-way valve 15 switches between the following connections: condensing heat exchanger 2 outlet to floor heat exchanger inlet 18c, floor heat exchanger outlet 18d to second interior heat exchanger 14 inlet, second interior heat exchanger 14 outlet to first water pump 9 inlet, second water pump 10 outlet to onboard refrigerator 17 inlet, onboard refrigerator 17 outlet to floor heat exchanger inlet 18c, floor heat exchanger outlet 18d to exterior heat exchanger 11 inlet, and water tank 12 outlet to evaporative heat exchanger 7 inlet. The brine cycle is not further described. This solution can recover battery heat.

[0150] Combine Figure 12 The present invention provides an air conditioning heating + refrigerator cooling + battery cooling + motor cooling cycle solution. The refrigerant side cycle is consistent with the above-mentioned air conditioning heating cycle. The switching connection state of the multi-way valve 15 on the water side is: condensing heat exchanger 2 outlet-floor heat exchange pipe inlet 18c, floor heat exchange pipe outlet 18d-second vehicle interior heat exchanger 14 inlet, second vehicle interior heat exchanger 14 outlet-first water pump 9 inlet, second water pump 10 outlet-vehicle refrigerator 17 inlet, vehicle refrigerator 17 outlet-floor heat exchange pipe inlet 18c, floor heat exchange pipe outlet 18d-motor 16 inlet, motor 16 outlet-exterior heat exchanger 11 inlet (mainly to give priority to the cooling needs of the battery, because the battery temperature must be guaranteed to be around the optimal 15-35°C, while the motor temperature does not need to be too low, and the optimal may not exceed 80°C. Even if the temperature is higher, there will be no safety problems. Therefore, the low-temperature cold water must pass through the battery first, based on a cascade heat dissipation consideration), water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the brine cycle is not repeated. This solution can recover heat from batteries and motors.

[0151] The above cycle of the present invention only lists representative thermal management modes. Other conventional modes can be achieved by switching the water connection of the multi-way valve 15. However, the order of the loads with cooling and heating requirements follows the above connection principle.

[0152] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. An automotive thermal management system, characterized in that: include: A compressor (1), an evaporating heat exchanger (7), a condensing heat exchanger (2), a first throttling device (3), a first in-vehicle heat exchanger (13), a second in-vehicle heat exchanger (14), an on-board refrigerator (17), a motor (16) and a battery (18); the compressor (1), the condensing heat exchanger (2), the first throttling device (3) and the evaporating heat exchanger (7) are connected to form a refrigerant circulation loop; The first in-vehicle heat exchanger (13) can exchange heat with the evaporative heat exchanger (7) through a cold-carrying pipeline to cool the interior of the vehicle, and the second in-vehicle heat exchanger (14) can exchange heat with the condensing heat exchanger (2) through a cold-carrying pipeline to heat the interior of the vehicle; the vehicle-mounted refrigerator (17) can exchange heat with the evaporative heat exchanger (7) through a cold-carrying pipeline to cool the refrigerator; the motor (16) can exchange heat with the evaporative heat exchanger (7) through a cold-carrying pipeline to cool the motor; the battery (18) can exchange heat with the evaporative heat exchanger (7) through a cold-carrying pipeline to cool the battery, or exchange heat with the condensing heat exchanger (2) through a cold-carrying pipeline to heat the battery; The invention also includes a multi-way valve (15), wherein the multi-way valve (15) has a plurality of interfaces, wherein the cooling interface of the evaporative heat exchanger (7), the cooling interface of the condensing heat exchanger (2), the first in-vehicle heat exchanger (13), the second in-vehicle heat exchanger (14), the vehicle-mounted refrigerator (17), the motor (16), and the battery (18) are all connected to the interfaces of the multi-way valve (15), and the interior of the multi-way valve (15) has a channel for connecting and disconnecting two of the plurality of interfaces, so as to enable the first in-vehicle heat exchanger (13) to exchange heat with the evaporative heat exchanger (7), the second in-vehicle heat exchanger (14) to exchange heat with the condensing heat exchanger (2), the vehicle-mounted refrigerator (17) to exchange heat with the evaporative heat exchanger (7), the motor (16) to exchange heat with the evaporative heat exchanger (7), and the battery (18) to exchange heat with the evaporative heat exchanger (7) or the condensing heat exchanger (2).

2. The automotive thermal management system according to claim 1, characterized in that: When the vehicle needs to be cooled, the multi-way valve (15) is controlled so that the first vehicle heat exchanger (13) is connected to the refrigerant pipe of the evaporating heat exchanger (7), and the second vehicle heat exchanger (14) is not connected; when the vehicle needs to be heated, the multi-way valve (15) is controlled so that the second vehicle heat exchanger (14) is connected to the refrigerant pipe of the condensing heat exchanger (2), and the first vehicle heat exchanger (13) is not connected; when the vehicle refrigerator (17) needs to be cooled, the multi-way valve (15) is controlled so that the vehicle refrigerator (17) is The multi-way valve (15) is connected to the refrigerant pipe of the evaporative heat exchanger (7); when the motor (16) needs to be cooled, the multi-way valve (15) is controlled so that the motor (16) is connected to the refrigerant pipe of the evaporative heat exchanger (7); when the battery (18) needs to be cooled, the multi-way valve (15) is controlled so that the battery (18) is connected to the refrigerant pipe of the evaporative heat exchanger (7); when the battery (18) needs to be heated, the multi-way valve (15) is controlled so that the battery (18) is connected to the refrigerant pipe of the condensing heat exchanger (2).

3. The automotive thermal management system according to claim 1 or 2, characterized in that: The multi-way valve (15) comprises a first interface (a), a second interface (b), a third interface (c), a fourth interface (d), a fifth interface (e), a sixth interface (f), a seventh interface (g), an eighth interface (h), a ninth interface (i), a tenth interface (j), an eleventh interface (k), a twelfth interface (l), a thirteenth interface (m) and a fourteenth interface (n), wherein the first interface (a) is connected to a cooling interface at one end of the evaporative heat exchanger (7) via a first cooling pipeline (101), and the second interface (b) is connected to a cooling interface at the other end of the evaporative heat exchanger (7) via a second cooling pipeline (102), so that the cooling medium can exchange heat with the refrigerant in the evaporative heat exchanger (7); The third interface (c) is connected to one end interface of the first in-vehicle heat exchanger (13) through a third cooling pipe (103), and the fourth interface (d) is connected to the other end interface of the first in-vehicle heat exchanger (13) through a fourth cooling pipe (104), so that a cooling medium can be introduced into the first in-vehicle heat exchanger (13) to cool the vehicle interior; The fifth interface (e) is connected to one end interface of the second in-vehicle heat exchanger (14) through a fifth cooling pipe (105), and the sixth interface (f) is connected to the other end interface of the second in-vehicle heat exchanger (14) through a sixth cooling pipe (106), so that a cooling medium can be introduced into the second in-vehicle heat exchanger (14) to heat the vehicle; The seventh interface (g) is communicated with one end interface of the motor (16) through a seventh cooling pipe (107), and the eighth interface (h) is communicated with the other end interface of the motor (16) through an eighth cooling pipe (108), so that a cooling medium can be introduced into the motor (16) for cooling the motor; The ninth interface (i) is connected to one end interface of the vehicle refrigerator (17) through a ninth cooling pipe (109), and the tenth interface (j) is connected to the other end interface of the vehicle refrigerator (17) through a tenth cooling pipe (100), so that a cooling agent can be introduced into the vehicle refrigerator (17) for refrigeration; The eleventh interface (k) is connected to one end interface of the battery (18) through the eleventh cooling pipe (111), and the twelfth interface (l) is connected to the other end interface of the battery (18) through the twelfth cooling pipe (112), so that a cooling agent can be introduced into the battery (18) to cool or heat the battery; The thirteenth interface (m) is connected to one end interface of the condensing heat exchanger (2) through the thirteenth cooling pipe (113), and the fourteenth interface (n) is connected to the other end interface of the condensing heat exchanger (2) through the fourteenth cooling pipe (114), so that the cooling medium can exchange heat with the refrigerant in the condensing heat exchanger (2).

4. The automotive thermal management system according to claim 3, characterized in that: It also includes an off-board heat exchanger (11), and the multi-way valve (15) further includes a fifteenth interface (o) and a sixteenth interface (p). The fifteenth interface (o) is connected to one end interface of the vehicle exterior heat exchanger (11) through the fifteenth cooling pipe (115), and the sixteenth interface (p) is connected to the other end interface of the vehicle exterior heat exchanger (11) through the sixteenth cooling pipe (116), so that cooling medium can be introduced into the vehicle exterior heat exchanger (11) to conduct heat or cold to the outside of the vehicle; When cooling is required in the vehicle, the multi-way valve (15) is controlled so that the external heat exchanger (11) is connected to the refrigerant pipe of the condensing heat exchanger (2); when heating is required in the vehicle, the multi-way valve (15) is controlled so that the external heat exchanger (11) is connected to the refrigerant pipe of the evaporating heat exchanger (7).

5. The automotive thermal management system according to claim 4, characterized in that: It also includes a floor layer (184), the floor layer (184) has a floor heat exchange pipe (18f), one end of the floor heat exchange pipe (18f) is a floor heat exchange pipe inlet (18c), and the other end is a floor heat exchange pipe outlet (18d), the multi-way valve (15) also includes a seventeenth interface (q) and an eighteenth interface (r), the floor heat exchange pipe outlet (18d) is connected to the seventeenth interface (q) through the seventeenth cooling pipe (117), and the floor heat exchange pipe inlet (18c) is connected to the eighteenth interface (r) through the eighteenth cooling pipe (118), when it is necessary to turn on the floor heating, the multi-way valve (15) is controlled so that the floor layer (184) is connected to the cooling pipe of the condensing heat exchanger (2).

6. The automotive thermal management system according to claim 5, characterized in that: The floor layer (184) and the battery (18) are integrated into one body, a heat insulating layer (183) is provided between the floor layer (184) and the battery (18), the battery (18) comprises a battery unit layer (182) and a battery cold plate layer (181), a battery heat exchange tube (18e) is provided inside the battery cold plate layer (181), one end of the battery heat exchange tube (18e) is a battery heat exchange tube inlet (18a), and the other end is a battery heat exchange tube outlet (18b), The battery heat exchange pipe inlet (18a) is in communication with the eleventh cooling pipe (111), and the battery heat exchange pipe outlet (18b) is in communication with the twelfth cooling pipe (112).

7. The automotive thermal management system according to any one of claims 4 to 6, characterized in that: The system further comprises a first water pump (9), a second water pump (10) and a water tank (12), wherein the first water pump (9) is arranged on the first secondary cooling pipeline (101) and / or the second secondary cooling pipeline (102), the second water pump (10) is arranged on the thirteenth secondary cooling pipeline (113) and / or the fourteenth secondary cooling pipeline (114), and the water tank (12) is arranged on the thirteenth secondary cooling pipeline (113) and / or the fourteenth secondary cooling pipeline (114); The refrigerant circulation loop is also provided with a flash evaporator (4), a second throttling device (6), a solenoid valve (5) and a gas-liquid separator (8); the flash evaporator (4) is provided between the first throttling device (3) and the evaporative heat exchanger (7); the second throttling device (6) is provided between the flash evaporator (4) and the evaporative heat exchanger (7); the air supply end of the flash evaporator (4) is connected to the air supply port of the compressor (1) through an air supply pipeline; the solenoid valve (5) is provided on the air supply pipeline; and the gas-liquid separator (8) is provided at the air intake port of the compressor (1).

8. The automotive thermal management system according to any one of claims 1 to 7, characterized in that: The cooling priority of the vehicle refrigerator (17) is higher than that of the first in-vehicle heat exchanger (13), that is, when both the vehicle interior and the vehicle refrigerator (17) need to be refrigerated, the multi-way valve (15) is controlled so that the coolant first flows through the vehicle refrigerator (17) and then flows through the first in-vehicle heat exchanger (13); The cooling priority of the first in-vehicle heat exchanger (13) is higher than that of the battery (18), that is, when both the interior of the vehicle and the battery (18) need to be cooled, the multi-way valve (15) is controlled so that the coolant first flows through the first in-vehicle heat exchanger (13) and then flows through the battery (18); The cooling priority of the battery (18) is higher than that of the motor (16), that is, when both the battery (18) and the motor (16) need to be cooled, the multi-way valve (15) is controlled so that the coolant flows through the battery (18) first and then flows through the motor (16).

9. A method for controlling an automotive thermal management system according to any one of claims 5 to 6, characterized in that: include: A determination step of determining whether the vehicle cooling mode or the vehicle heating mode needs to be turned on; Determine whether the car refrigerator needs to be turned on, whether the motor needs to be cooled, and whether the battery needs to be cooled or heated; The control step comprises the following steps: when the vehicle needs to be cooled, the multi-way valve (15) is controlled so that the first vehicle heat exchanger (13) is connected to the refrigerant pipe of the evaporating heat exchanger (7), and the second vehicle heat exchanger (14) is not connected; when the vehicle needs to be heated, the multi-way valve (15) is controlled so that the second vehicle heat exchanger (14) is connected to the refrigerant pipe of the condensing heat exchanger (2), and the first vehicle heat exchanger (13) is not connected; when the vehicle refrigerator (17) needs to be cooled, the multi-way valve (15) is controlled so that the vehicle refrigerator ( 17) is connected to the refrigerant pipeline of the evaporative heat exchanger (7); when the motor (16) needs to be cooled, the multi-way valve (15) is controlled so that the motor (16) is connected to the refrigerant pipeline of the evaporative heat exchanger (7); when the battery (18) needs to be cooled, the multi-way valve (15) is controlled so that the battery (18) is connected to the refrigerant pipeline of the evaporative heat exchanger (7); when the battery (18) needs to be heated, the multi-way valve (15) is controlled so that the battery (18) is connected to the refrigerant pipeline of the condensing heat exchanger (2).

10. The control method according to claim 9, characterized in that: When only the in-vehicle cooling mode is to be turned on, the multi-way valve (15) is controlled so that the first interface (a) is communicated with the fourth interface (d) inside the multi-way valve (15), the second interface (b) is communicated with the third interface (c) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the sixteenth interface (p) inside the multi-way valve (15), and the fourteenth interface (n) is communicated with the fifteenth interface (o) inside the multi-way valve (15); When only the in-car heating mode is to be turned on, the multi-way valve (15) is controlled so that the first interface (a) is connected to the sixteenth interface (p) inside the multi-way valve (15), the second interface (b) is connected to the fifteenth interface (o) inside the multi-way valve (15), the fourteenth interface (n) is connected to the fifth interface (e) inside the multi-way valve (15), the thirteenth interface (m) is connected to the eighteenth interface (r) inside the multi-way valve (15), and the seventeenth interface (q) is connected to the sixth interface (f) inside the multi-way valve (15), thereby forming air conditioning cooling plus floor heating.

11. The control method according to claim 9, characterized in that: The control step, when it is necessary to turn on the air conditioning refrigeration and the refrigerator refrigeration in the vehicle at the same time, controls the multi-way valve (15), the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the second interface (b) is communicated with the third interface (c) inside the multi-way valve (15), the fourth interface (d) is communicated with the ninth interface (i) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the sixteenth interface (p) inside the multi-way valve (15), and the fourteenth interface (n) is communicated with the fifteenth interface (o) inside the multi-way valve (15); When it is necessary to simultaneously start the in-vehicle air conditioning refrigeration, refrigerator refrigeration, and motor heat dissipation, the multi-way valve (15) is controlled, the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the second interface (b) is communicated with the third interface (c) inside the multi-way valve (15), the fourth interface (d) is communicated with the ninth interface (i) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the eighth interface (h) inside the multi-way valve (15), the seventh interface (g) is communicated with the sixteenth interface (p) inside the multi-way valve (15), and the fourteenth interface (n) is communicated with the fifteenth interface (o) inside the multi-way valve (15); When it is necessary to simultaneously start the in-vehicle air conditioning refrigeration, refrigerator refrigeration, and battery cooling, the multi-way valve (15) is controlled, the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the second interface (b) is communicated with the twelfth interface (l) inside the multi-way valve (15), the eleventh interface (k) is communicated with the third interface (c) inside the multi-way valve (15), the fourth interface (d) is communicated with the ninth interface (i) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the sixteenth interface (p) inside the multi-way valve (15), and the fourteenth interface (n) is communicated with the fifteenth interface (o) inside the multi-way valve (15).

12. The control method according to claim 9, characterized in that: The control step, when it is necessary to turn on the air conditioning heating and the refrigerator cooling in the vehicle at the same time, controls the multi-way valve (15), the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is communicated with the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is communicated with the second interface (b) inside the multi-way valve (15), the fifth interface (e) is communicated with the fourteenth interface (n) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the eighteenth interface (r) inside the multi-way valve (15), and the seventeenth interface (q) is communicated with the sixth interface (f) inside the multi-way valve (15); When it is necessary to turn on the air conditioning heating, refrigerator cooling and motor heat dissipation in the vehicle at the same time, the multi-way valve (15) is controlled, the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is communicated with the eighth interface (h) inside the multi-way valve (15), the seventh interface (g) is communicated with the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is communicated with the second interface (b) inside the multi-way valve (15), the fifth interface (e) is communicated with the fourteenth interface (n) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the eighteenth interface (r) inside the multi-way valve (15), and the seventeenth interface (q) is communicated with the sixth interface (f) inside the multi-way valve (15); When it is necessary to turn on the air conditioning heating, refrigerator cooling and battery heating in the vehicle at the same time, the multi-way valve (15) is controlled, the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is communicated with the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is communicated with the second interface (b) inside the multi-way valve (15), the fifth interface (e) is communicated with the eleventh interface (k) inside the multi-way valve (15), the twelfth interface (l) is communicated with the fourteenth interface (n) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the eighteenth interface (r) inside the multi-way valve (15), and the seventeenth interface (q) is communicated with the sixth interface (f) inside the multi-way valve (15); When it is necessary to turn on the air conditioning heating, refrigerator cooling and battery cooling in the vehicle at the same time, the multi-way valve (15) is controlled, the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is communicated with the eleventh interface (k) inside the multi-way valve (15), the twelfth interface (l) is communicated with the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is communicated with the second interface (b) inside the multi-way valve (15), the fifth interface (e) is communicated with the fourteenth interface (n) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the eighteenth interface (r) inside the multi-way valve (15), and the seventeenth interface (q) is communicated with the sixth interface (f) inside the multi-way valve (15); When it is necessary to turn on the air conditioning heating, refrigerator cooling, battery cooling and motor cooling in the vehicle at the same time, the multi-way valve (15) is controlled, the first interface (a) is communicated with the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is communicated with the eleventh interface (k) inside the multi-way valve (15), the twelfth interface (l) is communicated with the eighth interface (h) inside the multi-way valve (15), the seventh interface (g) is communicated with the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is communicated with the second interface (b) inside the multi-way valve (15), the fifth interface (e) is communicated with the fourteenth interface (n) inside the multi-way valve (15), the thirteenth interface (m) is communicated with the eighteenth interface (r) inside the multi-way valve (15), and the seventeenth interface (q) is communicated with the sixth interface (f) inside the multi-way valve (15).

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