Automobile thermal management system and control method thereof

Abstract

The invention provides an automobile heat management system and a control method thereof. The automobile heat management system comprises a compressor, an evaporation heat exchanger, a condensation heat exchanger, a first throttling device, a first in-automobile heat exchanger, a second in-automobile heat exchanger, a vehicle-mounted refrigerator, a motor and a battery. The first in-vehicle heat exchanger can exchange heat with the evaporation heat exchanger through the cold carrying pipeline, and the second in-vehicle heat exchanger can exchange heat with the condensation heat exchanger through the cold carrying pipeline. The vehicle-mounted refrigerator can exchange heat with the evaporation heat exchanger through the cold carrying pipeline; the motor can exchange heat with the evaporation heat exchanger through the cold carrying pipeline; the battery can exchange heat with the evaporation heat exchanger through the cold carrying pipeline or exchange heat with the condensation heat exchanger through the cold carrying pipeline; the multi-way valve is provided with a plurality of connectors, and a channel for connecting and disconnecting two of the connectors is arranged in the multi-way valve. According to the vehicle-mounted refrigerator, the problems that the vehicle-mounted refrigerator is low in energy efficiency, high in cost and large in occupied space can be effectively solved.

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] At present, the electric vehicle market is developing rapidly, and there are more and more comprehensive thermal management solutions for electric vehicle batteries, motors, electronic controls and air conditioners. The heat dissipation and cooling of these three loads are also the main solutions for current automotive thermal management. However, with the upgrading and upgrading of internal facilities in automobiles, car refrigerators as a major load are gradually added to the ranks of being managed. For car refrigerators, the main solution in the industry is a separate system independent of the thermal management system. Semiconductor refrigeration or an independent set of steam compression refrigeration systems are generally used. Semiconductor refrigeration is greatly affected by the environment and has low efficiency. Independent compression refrigeration requires an additional refrigeration system, which is not only costly but also occupies the installation space of the entire vehicle. In addition, the air outlets of automobile air conditioners are mostly set to blow air to the face or feet. When heating, passengers are prone to obvious stuffiness on their faces and bodies. Even if the foot blowing method can be used to alleviate it, it will cause uneven heating in the cockpit, affecting the comfort experience of people in the car. From the above two aspects, the solution of using a multifunctional thermal management system to solve the problems of car refrigerators and heating comfort is particularly critical.

[0003] Since the vehicle refrigerator in the prior art has 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 comprises:

[0006] 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-board refrigerator, a motor and a battery, wherein the compressor, the condensing heat exchanger, the first throttling device and the evaporative 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 through a cold-carrying pipeline to cool the interior of the vehicle, and the second in-vehicle heat exchanger can exchange heat with the condensing heat exchanger through a cold-carrying pipeline to heat the interior of the vehicle; the vehicle refrigerator can exchange heat with the evaporative heat exchanger through a cold-carrying pipeline to cool the vehicle refrigerator; the motor can exchange heat with the evaporative heat exchanger through a cold-carrying pipeline to cool the motor; the battery can exchange heat with the evaporative heat exchanger through a cold-carrying pipeline to cool the battery, or can exchange heat with the condensing heat exchanger through a cold-carrying pipeline 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 interior of the vehicle needs to be cooled, the multi-way valve is controlled so that the first in-vehicle heat exchanger is connected to the refrigerant pipeline of the evaporative heat exchanger, and the second in-vehicle heat exchanger is not connected at this time; when the interior of the vehicle needs to be heated, the multi-way valve is controlled so that the second in-vehicle heat exchanger is connected to the refrigerant pipeline of the condensing heat exchanger, and the first in-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 comprises 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 cooling interface at one end of the evaporative heat exchanger through a first cooling pipeline, and the second interface is connected to a cooling interface at the other end of the evaporative heat exchanger through a second cooling pipeline, so that the cooling agent 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 pipeline, and the fourth interface is connected to the other end interface of the first in-vehicle heat exchanger through a fourth cooling pipeline, so that the cooling medium can be introduced into the first in-vehicle heat exchanger to perform in-vehicle cooling;

[0014] The fifth interface is connected to one end interface of the second in-vehicle heat exchanger through a fifth cooling pipeline, and the sixth interface is connected to the other end interface of the second in-vehicle heat exchanger through a sixth cooling pipeline, so that the cooling medium can be introduced into the second in-vehicle heat exchanger to heat the vehicle;

[0015] The seventh interface is communicated with an interface at one end of the motor through a seventh cooling pipeline, and the eighth interface is communicated with an interface at the other end of the motor through an eighth cooling pipeline, so that a cooling agent can be introduced into the motor to cool the motor;

[0016] The ninth interface is connected to one end interface of the vehicle refrigerator through a ninth cooling pipe, and the tenth interface is connected to the other end interface of the vehicle refrigerator through a tenth cooling pipe, so that the 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 pipeline, and the twelfth interface is connected to the other end interface of the battery through the twelfth cooling pipeline, so that a cooling agent can be introduced 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-vehicle 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 vehicle exterior heat exchanger through the fifteenth cooling pipeline, and the sixteenth interface is connected to the other end interface of the vehicle exterior heat exchanger through the sixteenth cooling pipeline, so that the cooling medium can be introduced into the vehicle exterior heat exchanger to conduct 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 outdoor 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 outdoor 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 pipeline, and the floor heat exchange pipe inlet is connected to the eighteenth interface through the eighteenth cooling pipeline. When the floor heating needs to be turned on, the multi-way valve is controlled so that the floor layer is connected to the coolant pipeline of the condensing heat exchanger.

[0025] In some embodiments,

[0026] The floor layer is integrated with the battery, a heat insulation layer is provided between the floor layer and the battery, the battery comprises 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 pipeline, and the battery heat exchange tube outlet is connected to the twelfth cooling pipeline.

[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 cooling pipe and / or the second cooling pipe, the second water pump is arranged on the thirteenth cooling pipe and / or the fourteenth cooling pipe, and the water tank is arranged on the thirteenth cooling pipe and / or the fourteenth cooling pipe;

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

[0031] In some embodiments,

[0032] The cooling priority of the vehicle refrigerator is higher than that of the first in-vehicle heat exchanger, that is, when both the vehicle and the vehicle refrigerator need to be cooled, the multi-way valve is controlled so that the coolant first flows through the vehicle refrigerator and then flows 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 first flows through the first in-vehicle heat exchanger and then flows 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 automotive thermal management system as described above, comprising:

[0036] A judgment step, judging whether it is necessary to turn on the vehicle cooling mode or the vehicle heating mode; judging whether it is necessary to turn on the vehicle refrigerator, judging whether the motor needs to be cooled, and judging 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 in-vehicle heat exchanger is connected to the refrigerant pipeline of the evaporative heat exchanger, and the second in-vehicle heat exchanger is not connected; when the vehicle needs to be heated, the multi-way valve is controlled so that the second in-vehicle heat exchanger is connected to the refrigerant pipeline of the condensing heat exchanger, and the first in-vehicle heat exchanger is not connected; 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 needs to be turned on, controlling the multi-way valve so that the first interface is communicated with the fourth interface inside the multi-way valve, the second interface is communicated with the third 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;

[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 plus floor heating.

[0041] In some embodiments,

[0042] The control step, when it is necessary to turn on the air conditioning refrigeration and the refrigerator refrigeration at the same time, controls the multi-way valve, 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 refrigeration, refrigerator refrigeration 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 turn on the air conditioner for heating and the refrigerator for cooling at the same time, controls the multi-way valve, 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 car 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 car 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 thereof provided by the present invention have the following beneficial effects:

[0052] 1. The present invention provides a first in-vehicle heat exchanger, a second in-vehicle heat exchanger, a vehicle refrigerator, a battery and a motor. When cooling is required, the first in-vehicle heat exchanger is connected to the cold-carrying pipeline of the evaporative heat exchanger to absorb cold energy to cool the vehicle; when heating is required, the second in-vehicle heat exchanger is connected to the cold-carrying pipeline of the condensing heat exchanger to absorb heat to heat the vehicle; thereby achieving indirect heat exchange with the cold-carrying in the vehicle and improving safe cooling or heating in the vehicle. The present invention also integrates the battery, the motor and the vehicle refrigerator into the multi-way valve. While meeting the thermal management of conventional automobile batteries, motors and air conditioners, the vehicle refrigerator is integrated into the system. The low evaporation temperature of the indirect heat exchange system can meet the refrigeration and preservation requirements of 2 to 8°C in the refrigerator. The vehicle 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 the vehicle refrigerator. The vehicle refrigerator and the heat exchangers inside and outside the vehicle, the motor, and the battery heat exchanger are integrated through a multi-way valve, which not only realizes a compact structure, but also realizes optimization in control, precise control, and optimization on the pipeline; it can solve the problems of large space occupied by the vehicle refrigerator, non-compact structure, and low control precision of multiple heat exchange components; the present invention connects the evaporating heat exchanger, the condensing heat exchanger, the first and second vehicle heat exchangers, the vehicle refrigerator, the battery, the motor, and the vehicle heat exchanger outside the vehicle to the interface on the multi-way valve through the setting of the multi-way valve, thereby realizing effective structural integration of multiple heat exchangers, and can effectively control the on and off of multiple heat exchangers through one multi-way valve, thereby improving the heat exchange performance in the vehicle, improving energy efficiency, making the structure more compact, and greatly reducing the volume, further improving integration and functional diversification, ensuring that the vehicle refrigerator can be cooled normally, the battery and the motor are in the normal operating temperature range, and improving the operating reliability of the vehicle.

[0053] 2. The present invention can also achieve the effect of radiant heating in the car and improve the heating performance by setting a floor layer, and can also achieve a compact structure and a reduced volume by integrating the floor layer with the battery heat exchanger; and by setting the battery under the floor layer, the battery panel can also support the floor; the present invention can also set the refrigeration priority as follows: vehicle refrigerator> first vehicle heat exchanger> battery> motor, so that the vehicle refrigerator can be cooled preferentially by the refrigerant with a lower temperature exchanged with the evaporative heat exchanger, and then the first vehicle heat exchanger is exchanged to achieve refrigeration in the car, and then the battery is cooled, and finally the motor is cooled. Since the temperature required for refrigeration of the refrigerator is lower than that in the car, the temperature required in the car is lower than that of the battery, and the temperature required for the battery is lower than that of the motor, step-by-step heat exchange can be achieved according to the required operating temperatures of different components, thereby maximizing the use of the cooling capacity of the refrigerant, improving the energy utilization efficiency, and improving the energy efficiency of the automotive thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It 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 It is a connection structure diagram of the automobile thermal management system of the present invention when only the air conditioning refrigeration cycle is in progress;

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

[0058] Figure 5 It 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 It is a connection structure diagram of the automobile thermal management system of the present invention during the air conditioning refrigeration + refrigerator refrigeration + battery cooling cycle;

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

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

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

[0063] Fig.10It is a connection structure diagram of the automobile thermal management system of the present invention during the air conditioning heating + refrigerator cooling + battery heating cycle;

[0064] Fig.11 It is a connection structure diagram of the automobile thermal management system of the present invention during the air conditioning heating + refrigerator cooling + battery cooling cycle;

[0065] Fig.12 It 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 are as follows:

[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 unit layer; 183. Insulation layer; 184. Floor layer; 18a. Battery heat exchange tube inlet; 18b. Battery heat exchange tube outlet; 18c. Floor heat exchange tube inlet; 18d. Floor heat exchange tube outlet; 18e. Battery heat exchange tube; 18f. Floor heat exchange tube;

[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 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 described embodiments 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 by no means 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 creative work 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, it indicates 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 described in these embodiments, numerical expressions and numerical values ​​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 accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0073] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the 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 devices or elements 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 contours 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 here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. 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 figure. For example, if the device in the accompanying 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. If not 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 automobile thermal management system, which includes:

[0077] A compressor 1, an evaporative 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 onboard refrigerator 17, a motor 16 and a battery 18. The compressor 1, the condensing heat exchanger 2, the first throttling device 3 and the evaporative 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 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 can exchange heat with the condensing heat exchanger 2 through a cold-carrying pipeline 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 refrigerator 17, the motor 16 and the battery 18 are all connected to the interface 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 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 provides 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 cold-carrying pipeline of the evaporative heat exchanger to absorb cold energy to cool the vehicle; when heating is required, the second in-vehicle heat exchanger is connected to the cold-carrying pipeline of the condensing heat exchanger to absorb heat to heat the vehicle. Indirect heat exchange of the cold-carrying in the vehicle is achieved, and safe cooling or heating in the vehicle is improved. The present invention also integrates the battery, the motor and the 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 can be used to 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 the vehicle-mounted refrigerator. The vehicle refrigerator and the heat exchangers inside and outside the vehicle, the motor, and the battery heat exchanger are integrated through a multi-way valve, which not only realizes a compact structure, but also realizes optimization in control, precise control, and optimization on the pipeline; it can solve the problems of large space occupied by the vehicle refrigerator, non-compact structure, and low control precision of multiple heat exchange components; the present invention connects the evaporating heat exchanger, the condensing heat exchanger, the first and second vehicle heat exchangers, the vehicle refrigerator, the battery, the motor, and the vehicle heat exchanger outside the vehicle to the interface on the multi-way valve through the setting of the multi-way valve, thereby realizing effective structural integration of multiple heat exchangers, and can effectively control the on and off of multiple heat exchangers through one multi-way valve, thereby improving the heat exchange performance in the vehicle, improving energy efficiency, making the structure more compact, and greatly reducing the volume, further improving integration and functional diversification, ensuring that the vehicle refrigerator can be cooled normally, the battery and the motor are in the normal operating temperature range, and improving the operating reliability of the vehicle.

[0081] The vehicle refrigerator 17 of the present invention preferably obtains system cooling capacity through a water heat exchange pipe, and is provided with a low wind speed fan inside to achieve faster cooling and more uniform temperature distribution. The thermal management mode and function of the present invention are mainly achieved by switching the multi-way valve 15. When the load has a cooling or heating demand, the connection between the load and the main system is achieved by switching the multi-way valve 15, otherwise the connection is disconnected.

[0082] In some embodiments,

[0083] When the vehicle needs to be cooled, the multi-way valve 15 is controlled so that the first in-vehicle heat exchanger 13 is connected to the refrigerant pipeline of the evaporative heat exchanger 7, and the second in-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 in-vehicle heat exchanger 14 is connected to the refrigerant pipeline of the condensing heat exchanger 2, and the first in-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 automobile thermal management system of the present invention in the cooling mode, heating mode and the heat exchange mode of the vehicle refrigerator, battery and motor, that is, when cooling, by connecting the first in-vehicle heat exchanger to the refrigerant pipeline of the evaporative heat exchanger, the cooling amount 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; 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 in the vehicle; and the connection relationship between the vehicle refrigerator and the multi-way valve can be used to achieve cooling of the refrigerator; the connection relationship between the multi-way valve and the motor and the 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 automobile thermal management and achieving 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 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 cold interface at one end of the evaporative heat exchanger 7 through a first cold interface pipe 101, and the second interface b is connected to a cold interface at the other end of the evaporative heat exchanger 7 through a second cold interface pipe 102, so that the coolant can exchange heat with the refrigerant in the evaporative heat exchanger 7;

[0087] The third interface c is connected to one end interface of the first in-vehicle heat exchanger 13 through the 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 the fourth cooling pipe 104, so that the cooling medium can be introduced into the first in-vehicle heat exchanger 13 to cool the interior of the vehicle;

[0088] The fifth interface e is connected to one end interface of the second in-vehicle heat exchanger 14 through the 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 the sixth cooling pipe 106, so that the cooling medium can be introduced into the second in-vehicle heat exchanger 14 to heat the vehicle;

[0089] The seventh interface g is communicated with one end interface of the motor 16 through the seventh cooling pipeline 107, and the eighth interface h is communicated with the other end interface of the motor 16 through the eighth cooling pipeline 108, so that the cooling medium can be introduced into the motor 16 for cooling the motor;

[0090] The ninth interface i is connected to one end interface of the vehicle refrigerator 17 through the ninth cooling pipe 109, and the tenth interface j is connected to the other end interface of the vehicle refrigerator 17 through the tenth cooling pipe 100, so that the vehicle refrigerator 17 can be supplied with cooling agent for refrigeration;

[0091] The eleventh interface k is connected to one end interface of the battery 18 through the eleventh cooling pipeline 111, and the twelfth interface l is connected to the other end interface of the battery 18 through the twelfth cooling pipeline 112, so that the cooling agent can be passed into the battery 18 to cool or heat the battery;

[0092] The thirteenth interface m is connected to one end interface of the condensing heat exchanger 2 through the thirteenth cooling pipeline 113, and the fourteenth interface n is connected to the other end interface of the condensing heat exchanger 2 through the fourteenth cooling pipeline 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, preferably including at least fourteen interfaces, which are respectively 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 refrigeration in the vehicle and / or refrigeration 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 refrigeration of the vehicle refrigerator and / or cooling of the motor and / or cooling or heating of the battery, thereby improving the functionality of the automotive thermal management system and improving the comfort of the user.

[0094] In some embodiments,

[0095] The vehicle further comprises an off-vehicle heat exchanger 11, and the multi-way valve 15 comprises a fifteenth interface o and a sixteenth interface p.

[0096] 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 the cooling medium can be introduced into the vehicle exterior heat exchanger 11 to conduct heat or cold to the outside of the vehicle;

[0097] When cooling is required in the vehicle, the multi-way valve 15 is controlled so that the outdoor heat exchanger 11 is connected to the refrigerant pipeline of the condensing heat exchanger 2. When heating is required in the vehicle, the multi-way valve 15 is controlled so that the outdoor 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, so that in cooling mode, the heat in the car can be conducted to the external heat exchanger and discharged to the outside of the car, and in heating mode, the cold in the car can be conducted to the external heat exchanger and discharged to the outside of the car, thereby ensuring continuous and effective cooling or heating of the car. When cooling, the external heat exchanger is connected to the condensing heat exchanger, and the condensing heat exchanger can absorb the heat in the car by utilizing the temperature change of the refrigerant, increase the temperature of the refrigerant, and then transfer it to the coolant through the condenser, and finally discharge the heat to the outside of the car through the external heat exchanger. When heating, the external heat exchanger is connected to the evaporative heat exchanger, and the evaporative heat exchanger can absorb the cold in the car by utilizing the temperature change of the refrigerant, reduce the temperature of the refrigerant, and then transfer it to the coolant through the evaporator, and finally discharge the cold to the outside of the car. At the same time, the integrated thermal management effect of the car, the on-board refrigerator, the battery and the motor is achieved, thereby ensuring the comfort and reliability of the car operation.

[0099] In some embodiments,

[0100] 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 pipeline 117, and the floor heat exchange pipe inlet 18c is connected to the eighteenth interface r through the eighteenth cooling pipeline 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, so as to achieve the effect of radiation heating in the vehicle, improve the heating performance, and improve the functionality, thereby further improving the comfort of the user.

[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), and a heat insulation layer 183 is provided between the floor layer 184 and the battery 18. The battery 18 includes a battery unit 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 communicated with the eleventh cooling pipe 111 , and the battery heat exchange pipe outlet 18 b is communicated 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 a reduced volume; and by arranging the battery under the floor layer, the battery panel 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 unit layer 182, an insulation layer 183, and a floor layer 184, wherein 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 unit 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 unit layer 182 and the floor layer 184, which can 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 module solution of automobile battery + floor heating is provided, in which the battery cold plate layer 181 and the battery unit layer 182 are tightly combined 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 from 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 from the floor heat exchange tube outlet 18d, thereby heating the floor layer 184, and further heating the passenger compartment space through radiation and convection. In order to prevent the mode conflict between floor heating and battery cooling, the insulation layer 183 can well isolate the heat transfer between the two layers to ensure accurate matching of the loads on both sides.

[0108] The present invention designs a multi-mode automotive thermal management system. While meeting the thermal management of conventional automotive batteries, motors and air conditioners, the on-board refrigerator is integrated into the system. The low evaporation temperature of the indirect heat exchange system is utilized to meet the refrigeration and preservation requirements of 2 to 8°C in the refrigerator. In addition, floor heat exchange tubes are introduced into the system, which mainly use floor heating to heat the cab, thereby improving 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 the waste heat of motors and batteries. It has the characteristics of high integration, multiple functions and good comfort. Compared with conventional independent on-board air conditioners, it has 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 has the problem of uneven temperature distribution and poor comfort inside the car.

[0112] In some embodiments,

[0113] 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 cooling pipe 101 and / or the second cooling pipe 102, the second water pump 10 is arranged on the thirteenth cooling pipe 113 and / or the fourteenth cooling pipe 114, and the water tank 12 is arranged on the thirteenth cooling pipe 113 and / or the fourteenth cooling pipe 114;

[0114] A flash evaporator 4, a second throttling device 6, a solenoid valve 5 and a gas-liquid separator 8 are also provided in the refrigerant circulation loop. 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. The gas-liquid separator 8 is provided 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 the water has a good heat exchange effect on components such as the interior of the vehicle, the motor, and the 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 the 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 evaporative 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 outdoor 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 provided with a flash evaporator 4 and a solenoid valve 5 to further improve the low-temperature heating performance by supplementing air and increasing enthalpy.

[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 and the vehicle refrigerator 17 need to be cooled, 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;

[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 coolant first flows through the first in-vehicle heat exchanger 13 and then flows 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 refrigerated, 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, so that 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 to cool the interior of the vehicle, and then the battery is cooled, and finally the motor is cooled. Since the temperature required for refrigeration of the refrigerator is lower than that in the vehicle, the temperature required in the vehicle is lower than that in the battery, and the temperature required for the battery is lower than that in 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 automotive thermal management system.

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

[0124] A judgment step, judging whether it is necessary to turn on the vehicle cooling mode or the vehicle heating mode; judging whether it is necessary to turn on the vehicle refrigerator, judging whether the motor needs to be cooled, and judging whether the battery needs to be cooled or heated;

[0125] The control step is as follows: 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 evaporative 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 pipe of the evaporative heat exchanger 7, and the second vehicle heat exchanger 14 ... 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 needed, by connecting the first in-vehicle heat exchanger to the refrigerant pipeline of the evaporative heat exchanger, the cooling amount 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; when heating, by connecting the first in-vehicle heat exchanger to the refrigerant pipeline of the condensing heat exchanger, the heat provided by the condensing 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 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 the 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 automobile thermal management and achieving switching between multiple modes to meet the various usage needs of users in the vehicle.

[0127] In some embodiments,

[0128] When only the in-vehicle cooling mode needs 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;

[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 plus floor heating.

[0130] This is a further preferred control form of the present invention which 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] Combination Figure 3 When the air conditioner is in refrigeration operation, on the refrigerant side, the refrigerant enters the condensing heat exchanger 2 after being compressed by the compressor, the first throttling device 3 is in a fully open state without throttling, the solenoid valve 5 is in a closed state, and the refrigerant flows through the first throttling device 3 and the flash evaporator 4, and then enters the evaporative heat exchanger 7 for heat exchange after being throttled by the second throttling device 6, and finally 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 an 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 outdoor 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 indoor heat exchanger 13, and the outlet of the first indoor heat exchanger 13-the inlet of the evaporative heat exchanger 7. The brine circulating on the condensing side flows through the condensing heat exchanger 2 by the first water pump 9, exchanges heat with the refrigerant inside it, and then is connected to the outside heat exchanger 11 through the multi-way valve 15 to exchange heat with the air, and then flows back to the first water pump 9 through the water tank 12 and the multi-way valve 15 to form a cycle. The brine circulating on the evaporating side flows through the second water pump 10 and is connected to the first inside heat exchanger 13 through the multi-way valve 15, and then returns to the evaporating heat exchanger 7 through the multi-way valve 15 to exchange heat with the refrigerant, and finally flows back to the second water pump 10 to form a cycle.

[0132] Combination Figure 7When the air conditioner is in heating operation, on the refrigerant side, the refrigerant enters the condensing heat exchanger 2 after being compressed by the compressor, the first throttling device 3 is in the throttling state, 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 enters the medium-pressure chamber of the compressor 1 through the solenoid valve 5, and the liquid refrigerant enters the evaporative heat exchanger 7 for heat exchange after throttling by the second throttling device 6, and finally 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 state of the multi-way valve 15 is: the outlet of the condensing heat exchanger 2-the inlet 18c of the floor heat exchange pipe, the outlet 18d of the floor heat exchange pipe-the inlet of the second in-car heat exchanger 14, the outlet of the second in-car heat exchanger 14-the inlet of the first water pump 9, the outlet of the second water pump 10-the inlet of the outdoor heat exchanger 11, and the outlet of the water tank 12-the inlet of the evaporative heat exchanger 7. The refrigerant circulating on the condensing side flows through the condensing heat exchanger 2 by the first water pump 9, and after heat exchange with the refrigerant inside it, it is connected to the floor heat exchange pipe 18f and the second in-car heat exchanger 14 in sequence through the multi-way valve 15, and after heat exchange in the floor and the air-conditioning box, it flows back to the first water pump 9 to form a cycle (floor heating and air-conditioning heating are both turned on). The refrigerant circulating on the evaporation side flows through the second water pump 10 and is connected to the outside heat exchanger 11 through the multi-way valve 15, and then returns to the evaporation heat exchanger 7 through the water tank 12 and the multi-way valve 15 to exchange heat with the refrigerant, and finally flows back to the second water pump 10 to form a cycle. In particular, the refrigerant that has exchanged heat through the condensing heat exchanger 2 first radiates heat through the floor layer 184 of the battery module, and finally exchanges heat with the second in-car heat exchanger 14 in the air-conditioning box, which can improve the heating efficiency and comfort in the car. The corresponding evaporation side refrigerant absorbs environmental heat through the outside heat exchanger 11 and is provided to the evaporation heat exchanger 7.

[0133] In some embodiments,

[0134] The control step, when it is necessary to turn on the air conditioning and 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;

[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 and battery 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 second interface b is connected with the twelfth interface l inside the multi-way valve 15, the eleventh interface k is connected with the third interface c inside the multi-way valve 15, the fourth interface d is connected with the ninth interface i inside the multi-way valve 15, the thirteenth interface m is connected with the sixteenth interface p inside the multi-way valve 15, and the fourteenth interface n is connected with the fifteenth interface o inside the multi-way valve 15.

[0137] This is the preferred control form of the in-vehicle air conditioning refrigeration and refrigerator refrigeration mode, in-vehicle air conditioning refrigeration, refrigerator refrigeration and motor heat dissipation mode, in-vehicle 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 operation of air conditioning refrigeration + refrigerator refrigeration. The refrigerant side circulation 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: 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 vehicle refrigerator 17, the outlet of the vehicle refrigerator 17-the inlet of the first vehicle interior heat exchanger 13, and the outlet of the first vehicle interior heat exchanger 13-the inlet of the evaporative heat exchanger 7. In particular, in order to ensure that the vehicle refrigerator 17 can achieve a lower temperature, the refrigerant heated by the evaporative heat exchanger 7 first enters the vehicle refrigerator 17 for refrigeration. The refrigerant system can achieve an evaporation temperature below 0°C through the adjustment of the second throttling device 6, thereby ensuring a good refrigeration effect and refrigeration efficiency in the vehicle refrigerator 17.

[0138] Combination 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 brought to the vehicle external heat exchanger 11 by the refrigerant for dissipation, and the refrigerant cycle is no longer described.

[0139] Combination 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 refrigerant cycle is not repeated.

[0140] In some embodiments,

[0141] The control step, when it is necessary to turn on the air conditioner for heating and the refrigerator for cooling 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;

[0142] When it is necessary to turn on the air conditioning heating, refrigerator cooling and motor heat dissipation 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 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;

[0143] When it is necessary to turn on the air conditioning heating, refrigerator cooling and battery heating 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 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 eleventh interface k inside the multi-way valve 15, the twelfth interface l 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;

[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 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 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;

[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 exchanger pipe inlet 18c, floor heat exchanger pipe outlet 18d-second in-vehicle heat exchanger 14 inlet, second in-vehicle heat exchanger 14 outlet-first water pump 9 inlet, second water pump 10 outlet-vehicle refrigerator 17 inlet, vehicle refrigerator 17 outlet-vehicle outdoor heat exchanger 11 inlet, water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the refrigerant cycle is not repeated.

[0147] Combination Fig. 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 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 exchanger pipe inlet 18c, floor heat exchanger pipe outlet 18d-second in-car heat exchanger 14 inlet, second in-car heat exchanger 14 outlet-first water pump 9 inlet, second water pump 10 outlet-car refrigerator 17 inlet, car refrigerator 17 outlet-motor 16 inlet, motor 16 outlet-outside car heat exchanger 11 inlet, water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the refrigerant cycle is not repeated. This solution can realize the recovery of motor heat ( Fig. 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] Combination Fig.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 in-vehicle heat exchanger 14 inlet, second in-vehicle 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 external heat exchanger 11 inlet, water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the refrigerant cycle is not repeated.

[0149] Combination Fig.11The present invention provides an air conditioning heating + refrigerator cooling + battery cooling cycle solution. The refrigerant side cycle is consistent with the above 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 in-car heat exchanger 14 inlet, second in-car 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-out-vehicle heat exchanger 11 inlet, water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the refrigerant cycle is not repeated. This solution can realize the recovery of battery heat.

[0150] Combination Fig.12 The present invention provides an air conditioning heating + refrigerator refrigeration + 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 in-vehicle heat exchanger 14 inlet, second in-vehicle 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-outside vehicle 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, and the motor temperature does not need to be too low, the best may not exceed 80°C, even if the temperature is higher, there will be no safety problems, so the low-temperature cold water must first pass through the battery, based on a step-by-step heat dissipation consideration), water tank 12 outlet-evaporative heat exchanger 7 inlet, wherein the refrigerant cycle is not repeated. This solution can realize the recovery of heat from batteries and motors.

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

[0152] The above description is only 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 principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An automotive thermal management system, characterized in that: include: A compressor (1), an evaporative 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), wherein the compressor (1), the condensing heat exchanger (2), the first throttling device (3) and the evaporative 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 can exchange heat with the condensing heat exchanger (2) through a cold-carrying pipeline to heat the battery; The multi-way valve (15) further comprises 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 multi-way valve (15) has a passage inside thereof for connecting and disconnecting two of the plurality of 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).

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

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 agent 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 pipeline (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 pipeline (104), so that a cooling medium can be introduced into the first in-vehicle heat exchanger (13) to perform in-vehicle cooling; The fifth interface (e) is connected to one end interface of the second in-vehicle heat exchanger (14) through a fifth cooling pipeline (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 pipeline (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 connected to an interface at one end of the motor (16) through a seventh cooling pipeline (107), and the eighth interface (h) is connected to an interface at the other end of the motor (16) through an eighth cooling pipeline (108), so that a cooling medium can be introduced into the motor (16) to cool the motor; The ninth interface (i) is connected to an interface at one end of the vehicle refrigerator (17) via a ninth cooling pipeline (109), and the tenth interface (j) is connected to an interface at the other end of the vehicle refrigerator (17) via a tenth cooling pipeline (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 pipeline (111), and the twelfth interface (l) is connected to the other end interface of the battery (18) through the twelfth cooling pipeline (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 pipeline (113), and the fourteenth interface (n) is connected to the other end interface of the condensing heat exchanger (2) through the fourteenth cooling pipeline (114), so that the cooling agent 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-vehicle 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 off-vehicle heat exchanger (11) through a fifteenth cooling pipe (115), and the sixteenth interface (p) is connected to the other end interface of the off-vehicle heat exchanger (11) through a sixteenth cooling pipe (116), so that a cooling medium can be introduced into the off-vehicle 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 pipeline 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 pipeline 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 pipeline (117), and the floor heat exchange pipe inlet (18c) is connected to the eighteenth interface (r) through the eighteenth cooling pipeline (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 agent pipeline 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 insulation 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: It also 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 cooling pipeline (101) and / or the second cooling pipeline (102), the second water pump (10) is arranged on the thirteenth cooling pipeline (113) and / or the fourteenth cooling pipeline (114), and the water tank (12) is arranged on the thirteenth cooling pipeline (113) and / or the fourteenth 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 arranged between the first throttling device (3) and the evaporative heat exchanger (7); 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).

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 interior of the vehicle 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 first flows through the battery (18) and then flows through the motor (16).

9. A control method for an automotive thermal management system according to any one of claims 5 to 6, characterized in that: include: A determination step, determining whether the vehicle cooling mode needs to be turned on, or whether the vehicle heating mode needs to be turned on; Determine whether the vehicle 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: when the vehicle interior needs to be cooled, 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 to be heated, 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 to be cooled, the multi-way valve (15) is controlled so that the vehicle interior refrigerator (17) is connected to the refrigerant pipe of the condensing heat exchanger (2), and the first vehicle interior heat exchanger (13) is not connected. 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 needs to be turned on, the multi-way valve (15) is controlled so that the first interface (a) is connected to the fourth interface (d) inside the multi-way valve (15), the second interface (b) is connected to the third interface (c) 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); 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), 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 in-vehicle air conditioning and refrigerator refrigeration at the same time, controls the multi-way valve (15), 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 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); 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 connected to the tenth interface (j) inside the multi-way valve (15), the second interface (b) 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 eighth interface (h) inside the multi-way valve (15), the seventh interface (g) 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); When it is necessary to turn on the air conditioning refrigeration, refrigerator refrigeration 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).

12. The control method according to claim 9, characterized in that: The control step, when it is necessary to turn on the air conditioner for heating and the refrigerator for cooling at the same time, controls the multi-way valve (15), wherein the first interface (a) is connected to the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is connected to the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is connected to the second interface (b) inside the multi-way valve (15), the fifth interface (e) is connected to the fourteenth interface (n) 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); 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 connected to the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is connected to the eighth interface (h) inside the multi-way valve (15), the seventh interface (g) is connected to the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is connected to the second interface (b) inside the multi-way valve (15), the fifth interface (e) is connected to the fourteenth interface (n) 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); 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 connected to the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is connected to the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is connected to the second interface (b) inside the multi-way valve (15), the fifth interface (e) is connected to the eleventh interface (k) inside the multi-way valve (15), the twelfth interface (l) is connected to the fourteenth interface (n) 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); 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 connected to the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is connected to the eleventh interface (k) inside the multi-way valve (15), the twelfth interface (l) is connected to the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is connected to the second interface (b) inside the multi-way valve (15), the fifth interface (e) is connected to the fourteenth interface (n) 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); 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 connected to the tenth interface (j) inside the multi-way valve (15), the ninth interface (i) is connected to the eleventh interface (k) inside the multi-way valve (15), the twelfth interface (l) is connected to the eighth interface (h) inside the multi-way valve (15), the seventh interface (g) is connected to the sixteenth interface (p) inside the multi-way valve (15), the fifteenth interface (o) is connected to the second interface (b) inside the multi-way valve (15), the fifth interface (e) is connected to the fourteenth interface (n) 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).

Images