Double-layer multi-channel integrated valve and automobile thermal management system using same

Abstract

The application provides a double-layer multi-flow-channel integrated valve and an automobile thermal management system using the same. The double-layer multi-flow-channel integrated valve comprises a valve body, a plurality of internal flow channels are arranged in the valve body, the plurality of internal flow channels are arranged as a first layer and a second layer along the thickness direction of the valve body, the valve body comprises a first end face, a second end face and a peripheral side wall between the first end face and the second end face, a plurality of pipe interfaces are arranged on the peripheral side wall along the circumferential direction of the peripheral side wall, and two end channel openings of each internal flow channel are respectively arranged in the corresponding pipe interface. The internal flow channels in the valve body are arranged as the first layer and the second layer along the thickness direction, so that the planar area of the valve body is reduced, the structure is more compact, each pipe interface is arranged on the peripheral side wall, the arrangement of each external pipe line is approximately in the shape of a radial line, the pipe lines are prevented from interfering with each other, and the pipe arrangement is facilitated.

Description

Technical Field

[0001] This invention belongs to the field of automotive thermal management system design technology, specifically relating to a dual-layer multi-channel integrated valve and an automotive thermal management system using it. Background Technology

[0002] With the implementation of national energy conservation and emission reduction policies, new energy vehicles have developed rapidly. Compared with the air conditioning in fuel vehicles, which is only used to cool the passenger compartment, the air conditioning system in new energy vehicles has been given more tasks. It needs to manage the cooling and heating of the battery, the cooling and heating of the motor, and the environmental management of the passenger compartment. As a result, the air conditioning system has become very complex. The air conditioning pipes have increased from the original three pipes of the single cooling unit to more than a dozen pipes. At the same time, many new solenoid valves and electronic expansion valves have been added to the system, greatly increasing the complexity of the system and causing great inconvenience to the installation and maintenance of the air conditioning. In a previous application (application publication number: CN115534621A), the applicant proposed an integrated valve assembly with ten external interfaces, which can integrate the switching of multiple operating conditions of the automotive thermal management system into one integrated valve assembly. This can greatly simplify the piping design and layout of the thermal management system, thereby reducing the space occupied by the vehicle (such as a new energy vehicle). However, it was found in the application process that because the valve body of the integrated valve assembly has too many internal flow channels, and there are inter-connection requirements between some of the internal flow channels, the design of the internal flow channels is relatively complex, resulting in a large overall volume of the valve body and still a large space occupied by the vehicle. Summary of the Invention

[0003] Therefore, the present invention provides a dual-layer multi-channel integrated valve and an automotive thermal management system using the same, which can solve the technical problem that the complex internal flow channel design of the valve body of the multi-channel integrated valve group in the prior art leads to a large overall volume and a large occupation of vehicle space.

[0004] To address the above problems, the present invention provides a dual-layer multi-channel integrated valve, comprising:

[0005] The valve body has multiple internal flow channels arranged in a first layer and a second layer along the thickness direction of the valve body. The valve body includes a first end face, a second end face, and an outer peripheral sidewall located between the first end face and the second end face. Multiple pipe interfaces are arranged at intervals along the circumference of the outer peripheral sidewall, and the two end openings of each internal flow channel are respectively located in the corresponding pipe interface.

[0006] In some implementations...

[0007] The pipe interface includes a first interface, a second interface, a ninth interface, and a tenth interface. The internal flow channel includes a first flow channel, a second flow channel, and a third flow channel. The first flow channel and the second flow channel are located in the first layer, and the third flow channel is located in the second layer. The first end of each of the first, second, and third flow channels is located within the first interface. The second end of the first flow channel is located within the second interface. The second end of the second flow channel is located within the tenth interface. The second end of the third flow channel is located within the ninth interface.

[0008] In some implementations...

[0009] The pipe interface further includes a fifth interface, a sixth interface, a seventh interface, and an eighth interface. The internal flow channel further includes a fourth flow channel, a fifth flow channel, a sixth flow channel, and a seventh flow channel. The fourth and fifth flow channels are located within the second layer, and the sixth and seventh flow channels are both located within the first layer. The first end of each of the fourth, fifth, sixth, and seventh flow channels is located within the seventh interface. The second end of the fourth flow channel is located within the ninth interface. The second end of the fifth flow channel is located within the fifth interface. The second end of the sixth flow channel is located within the eighth interface. The second end of the seventh flow channel is located within the sixth interface.

[0010] In some implementations...

[0011] The pipe interface further includes a third interface and a fourth interface, and the internal flow channel further includes an eighth flow channel, a ninth flow channel, and a tenth flow channel, wherein the eighth and ninth flow channels are located in the first layer, the tenth flow channel is located in the second layer, the first end of the eighth, ninth, and tenth flow channels is located within the third interface, the second end of the eighth flow channel is located within the fourth interface, the second end of the ninth flow channel is located within the second interface, and the second end of the tenth flow channel is located within the fifth interface.

[0012] In some implementations...

[0013] The internal flow channel also includes an eleventh flow channel, the first end of which is located within the eighth interface, and the second end of which is located within the ninth interface.

[0014] In some implementations...

[0015] Projected onto the first end face, the outer peripheral sidewall is a regular decagon, and each of the pipe interfaces is set one-to-one with each side of the regular decagon.

[0016] In some implementations...

[0017] The valve body is also integrated with a solenoid valve assembly, which includes a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a first electronic expansion valve, a second electronic expansion valve, a third electronic expansion valve, a fourth electronic expansion valve, and a fifth electronic expansion valve. The first solenoid valve is connected in series in the first flow channel; the second solenoid valve is connected in series in the third flow channel; the first electronic expansion valve is connected in series in the fourth flow channel; the second electronic expansion valve is connected in series in the fifth flow channel; the third electronic expansion valve is connected in series in the sixth flow channel; the fourth electronic expansion valve is connected in series in the seventh flow channel; the third solenoid valve is connected in series in the ninth flow channel; the fourth solenoid valve is connected in series in the tenth flow channel; and the fifth electronic expansion valve is connected in series in the eleventh flow channel.

[0018] In some implementations...

[0019] The solenoid valve assembly is mounted on the first end face, and the first solenoid valve, the third solenoid valve, the third electronic expansion valve, and the fourth electronic expansion valve are installed in the concave area of ​​the first end face.

[0020] In some implementations...

[0021] The valve body has a clearance through hole at its central position, the clearance through hole passing through the first end face and the second end face, each of the internal flow channels is constructed in the area between the hole wall of the clearance through hole and the outer peripheral side wall, and the solenoid valve assembly is assembled in the area between the hole wall of the clearance through hole and the outer peripheral side wall.

[0022] In some implementations...

[0023] The first end face is also provided with a plurality of coil fixing holes, each of which is used to fix each electromagnetic coil in the electromagnetic valve assembly.

[0024] In some implementations...

[0025] The pipe interface includes a pipe mating section and a pipe connection hole located on the free end face of the pipe mating section.

[0026] The present invention also provides an automotive thermal management system, including a battery cooling module, an outer heat exchanger, an inner evaporator, an inner condenser, a compressor, and the aforementioned dual-layer multi-channel integrated valve.

[0027] The present invention provides a dual-layer multi-channel integrated valve and an automotive thermal management system using the same, which have the following beneficial effects:

[0028] The internal flow channels within the valve body are arranged in two layers along its thickness, which reduces the planar area occupied by the valve body and makes the structure of the valve body more compact. This is beneficial for applications with relatively small installation space, such as automobiles. On the other hand, each pipe interface is constructed on the outer peripheral sidewall, so that the arrangement of each external pipe is roughly in the shape of rays radiating from the center, preventing interference between pipes and facilitating pipe laying. Attached Figure Description

[0029] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0030] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0031] Figure 1 This is a front view structural diagram of the valve body of the dual-layer multi-channel integrated valve according to an embodiment of the present invention;

[0032] Figure 2 This is a side view of a dual-layer multi-channel integrated valve according to an embodiment of the present invention;

[0033] Figure 3 for Figure 2 Sectional view of AA;

[0034] Figure 4 for Figure 2 Sectional view of BB;

[0035] Figure 5 for Figure 1 A three-dimensional structural diagram of the valve body in the diagram;

[0036] Figure 6 This is a front view of the double-layer multi-channel integrated valve of the present invention.

[0037] Figure 7 for Figure 6 A schematic diagram of the three-dimensional structure;

[0038] Figure 8 for Figure 7 Structural disassembly diagram;

[0039] Figure 9 This is a schematic diagram of the automotive thermal management system of the present invention;

[0040] Figure 10 This is a schematic diagram of the control method of the automotive thermal management system of the present invention.

[0041] The reference numerals in the attached figures are as follows:

[0042] 1. Valve body; 11. Clearance through hole; 12. Coil fixing hole;

[0043] 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;

[0044] 21. First flow channel; 22. Second flow channel; 23. Third flow channel; 24. Fourth flow channel; 25. Fifth flow channel; 26. Sixth flow channel; 27. Seventh flow channel; 28. Eighth flow channel; 29. ​​Ninth flow channel; 210. Tenth flow channel; 211. Eleventh flow channel;

[0045] 31. First solenoid valve; 32. Second solenoid valve; 33. Third solenoid valve; 34. Fourth solenoid valve; 41. First electronic expansion valve; 42. Second electronic expansion valve; 43. Third electronic expansion valve; 44. Fourth electronic expansion valve; 45. Fifth electronic expansion valve;

[0046] 51. Pipeline connection section; 52. Pipeline connection hole;

[0047] 100. Unit battery cooling module; 200. External heat exchanger; 301. Internal evaporator; 302. Internal condenser; 400. Compressor; 401. Gas-liquid separator. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0050] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0051] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0052] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0053] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0054] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0055] See also Figure 1 and Figure 10 As shown, according to an embodiment of the present invention, a dual-layer multi-channel integrated valve is provided, comprising:

[0056] The valve body 1 has multiple internal flow channels arranged in a first layer and a second layer along the thickness direction of the valve body 1. The valve body 1 includes a first end face, a second end face, and an outer peripheral sidewall located between the first end face and the second end face. Multiple pipe interfaces are arranged at intervals along the circumference of the outer peripheral sidewall, and the two end openings of each internal flow channel are respectively located in the corresponding pipe interface.

[0057] In this technical solution, the internal flow channels inside the valve body 1 are arranged in a first layer and a second layer in the thickness direction, thereby reducing the planar area occupied by the valve body 1 and making the structure of the valve body 1 more compact. This is beneficial for the arrangement in application scenarios with relatively small installation space, such as automobiles. On the other hand, each pipe interface is constructed on the outer peripheral sidewall, so that the arrangement of each external pipe is roughly in the shape of rays radiating from the center, preventing interference between pipes and facilitating pipe laying.

[0058] In some implementations...

[0059] The pipe interface includes a first interface a, a second interface b, a ninth interface i, and a tenth interface j. The internal flow channel includes a first flow channel 21, a second flow channel 22, and a third flow channel 23. The first flow channel 21 and the second flow channel 22 are located in the first layer, and the third flow channel 23 is located in the second layer. The first end of the first flow channel 21, the second flow channel 22, and the third flow channel 23 are located within the first interface a. The second end of the first flow channel 21 is located within the second interface b. The second end of the second flow channel 22 is located within the tenth interface j. The second end of the third flow channel 23 is located within the ninth interface i.

[0060] In this technical solution, the first end of each of the first flow channel 21, the second flow channel 22, and the third flow channel 23 is located within the first interface a. Due to the layered arrangement of each flow channel, the first end ports of the three flow channels are arranged in a roughly triangular pattern within the first interface a, which greatly simplifies the pipeline design, reduces the number of pipelines laid, and lowers the valve cost.

[0061] Further refer to Figure 3 and Figure 4 In some implementation methods,

[0062] The pipe interface further includes a fifth interface e, a sixth interface f, a seventh interface g, and an eighth interface h. The internal flow channels further include a fourth flow channel 24, a fifth flow channel 25, a sixth flow channel 26, and a seventh flow channel 27. The fourth flow channel 24 and the fifth flow channel 25 are located in the second layer, and the sixth flow channel 26 and the seventh flow channel 27 are both located in the first layer. The first end of each of the fourth flow channel 24, the fifth flow channel 25, the sixth flow channel 26, and the seventh flow channel 27 is located in the seventh interface g. The second end of the fourth flow channel 24 is located in the ninth interface i. The second end of the fifth flow channel 25 is located in the fifth interface e. The second end of the sixth flow channel 26 is located in the eighth interface h. The second end of the seventh flow channel 27 is located in the sixth interface f.

[0063] In this technical solution, the first end ports of the fourth flow channel 24, the fifth flow channel 25, the sixth flow channel 26 and the seventh flow channel 27 are all located within the seventh interface g, so that the aforementioned four flow channels converge in the same pipe interface. While achieving the purpose of flow path switching in the thermal management system, this further simplifies the difficulty of pipe laying, reduces the number of pipe components, and further reduces valve costs.

[0064] In some implementations...

[0065] The pipe interface further includes a third interface c and a fourth interface d. The internal flow channels further include an eighth flow channel 28, a ninth flow channel 29, and a tenth flow channel 210. The eighth flow channel 28 and the ninth flow channel 29 are located in the first layer, and the tenth flow channel 210 is located in the second layer. The first end of each of the eighth flow channel 28, the ninth flow channel 29, and the tenth flow channel 210 is located within the third interface c. The second end of the eighth flow channel 28 is located within the fourth interface d. The second end of the ninth flow channel 29 is located within the second interface b. The second end of the tenth flow channel 210 is located within the fifth interface e.

[0066] In this technical solution, the ports of the aforementioned eighth flow channel 28, ninth flow channel 29 and tenth flow channel 210 are all converged in the third interface c. While achieving the purpose of flow path switching in the thermal management system, this further simplifies the difficulty of pipe laying, reduces the number of pipe components, and further reduces valve costs.

[0067] Furthermore, the internal flow channel also includes an eleventh flow channel 211, the first end of which is located within the eighth interface h, and the second end of which is located within the ninth interface i.

[0068] As can be seen, in this invention, the eleven internal flow channels in the valve body 1 form corresponding connections (straight-through or controllable connections) to the nine pipe interfaces. These internal flow channels are arranged in layers, and the ports of each internal flow channel are integrated according to the flow path switching requirements, which further simplifies the structure of the valve body and makes the structure more compact.

[0069] Some of the aforementioned pipe interfaces have four internal flow channels, while others have three, two, or only one. This allows for reliable switching of various operating modes of the automotive thermal management system under the switching control of the relevant solenoid valve group, greatly reducing the space occupied in the vehicle and simplifying the layout of the pipes within the vehicle.

[0070] See details Figure 2As shown, in some embodiments, the pipe interface includes a pipe mating section 51 and a pipe connection hole 52 located on the free end face of the pipe mating section. It is understood that when the corresponding external pipe is connected to the corresponding pipe interface, a corresponding sealing element (e.g., a sealing ring) is also provided at the mating surface to ensure the sealing reliability of the connection and prevent refrigerant leakage at the mating surface. Specifically, the aforementioned pipe connection hole 52 can be a threaded hole, and the depth of each threaded hole should be large enough to ensure sufficient thread mating length. The aforementioned pipe mating section 51 is a pipe section of a certain length. The pipe diameter of each pipe interface can be reasonably set according to the number of ports of the internal flow channels simultaneously contained within it. Generally speaking, the more ports of the internal flow channels simultaneously contained within it, the larger the pipe diameter of the corresponding pipe interface, and vice versa.

[0071] In a preferred embodiment,

[0072] Projected onto the first end face (or the second end face), the outer peripheral sidewall is a regular decagon, and each of the pipe interfaces is arranged corresponding to one of the sides of the regular decagon. The ten pipe interfaces correspond to the ten edges of the regular decagon, giving the valve's overall structure a high degree of visual consistency and facilitating the manufacturing of the valve body 1. The flow path of each internal flow channel is preferably arc-shaped, which can effectively reduce the flow resistance of the refrigerant in each flow channel and reduce the pressure loss of the refrigerant flow.

[0073] It is understood that the valve body 1 is also integrated with a solenoid valve assembly, which includes a first solenoid valve 31, a second solenoid valve 32, a third solenoid valve 33, a fourth solenoid valve 34, a first electronic expansion valve 41, a second electronic expansion valve 42, a third electronic expansion valve 43, a fourth electronic expansion valve 44, and a fifth electronic expansion valve 45. Specifically, the first solenoid valve 31 is connected in series to the first flow channel 21, the second solenoid valve 32 is connected in series to the third flow channel 23, the first electronic expansion valve 41 is connected in series to the fourth flow channel 24, the second electronic expansion valve 42 is connected in series to the fifth flow channel 25, the third electronic expansion valve 43 is connected in series to the sixth flow channel 26, the fourth electronic expansion valve 44 is connected in series to the seventh flow channel 27, the third solenoid valve 33 is connected in series to the ninth flow channel 29, the fourth solenoid valve 34 is connected in series to the tenth flow channel 210, and the fifth electronic expansion valve 45 is connected in series to the eleventh flow channel 211. That is, each valve component is directly assembled on the valve body 1 and connected in series with each internal flow channel, thereby adjusting and controlling the flow or flow rate of the corresponding internal flow channel, and the structure is further compacted.

[0074] In some implementations...

[0075] Each valve component in the solenoid valve assembly is assembled on the first end face, and the first solenoid valve 31, the third solenoid valve 33, the third electronic expansion valve 43, and the fourth electronic expansion valve 44 are installed in the concave area of ​​the first end face. That is, the layered design of each valve component and each internal flow channel in the solenoid valve assembly is also formed in the thickness direction of the valve body 1, which can optimize the arrangement of each valve component on the first end face.

[0076] It is understandable that each valve component is assembled onto the aforementioned first end face (including the concave area) through corresponding assembly holes. These assembly holes have corresponding mating sections to ensure that each valve component can be connected in series with its corresponding internal flow channel without external leakage.

[0077] See details Figure 5 As shown, a plurality of coil fixing holes 12 are also constructed on the first end face. Each coil fixing hole 12 is used to fix each electromagnetic coil in the electromagnetic valve group. It can be understood that each coil fixing hole 12 is respectively arranged adjacent to and corresponding to the corresponding assembly hole.

[0078] In some implementations...

[0079] The valve body 1 has a clearance through hole 11 at its central position. The clearance through hole 11 passes through the first end face and the second end face. Each of the internal flow channels is constructed in the area between the hole wall of the clearance through hole 11 and the outer peripheral side wall. The solenoid valve assembly is assembled in the area between the hole wall of the clearance through hole 11 and the outer peripheral side wall.

[0080] The aforementioned clearance through hole 11 can reduce the overall weight of the valve body 1 on the one hand, and on the other hand, it can adapt to the installation conditions in the car, prevent interference with other components at the car installation location, and further improve the structural compactness of each component.

[0081] According to an embodiment of the present invention, an automotive thermal management system is also provided, including a battery cooling module 100, an outer heat exchanger 200, an inner evaporator 301, an inner condenser 302, a compressor 400, a gas-liquid separator 401, and the aforementioned dual-layer multi-channel integrated valve. See details. Figure 9As shown, the first interface a of the dual-layer multi-channel integrated valve is connected to the exhaust port of the compressor 400, the second interface b is connected to the first side of the outer heat exchanger 200, the third interface c is connected to the suction port of the compressor 400 through the gas-liquid separator 401, the fourth interface d is connected to the first side of the inner evaporator 301, the fifth interface e is connected to the first side of the unit battery cooling module 100, the sixth interface f is connected to the second side of the inner evaporator 301, the seventh interface g is connected to the second side of the outer heat exchanger 200, the eighth interface h is connected to the first side of the inner condenser 302, the ninth interface i is connected to the second side of the unit battery cooling module 100, and the tenth interface j is connected to the second side of the inner condenser 302. By controlling the on / off state or opening degree of each valve in the solenoid valve group on the control valve body 1, the flow direction and flow rate of refrigerant in the vehicle thermal management system can be regulated, thereby achieving specific temperature control needs such as heating and cooling of the vehicle cabin and heating and cooling of the vehicle's battery. Specifically, it can realize a total of 9 modes, including cabin cooling, battery cooling, cabin heating, battery heating, cabin cooling + battery cooling, cabin heating + battery heating, cabin heating + battery cooling mode 1, cabin heating + battery cooling mode 2, and cabin heating + battery cooling mode 3. These modes have been disclosed in the applicant's prior application (application publication number: CN115534621A) and will not be elaborated here.

[0082] Figure 10 The improvement to the control method of the automotive thermal management system of the present invention is based on the principle of using the temperature difference between the temperature sensor on the thermal management component connected to the valve and a set value, or the temperature difference between the temperature sensor and other components, to control the on / off state of the valve or the opening degree of the electronic expansion valve. For Figure 9 The control principle of the dual-layer multi-channel integrated valve in the automotive thermal management system is as follows:

[0083] The vehicle's thermal management system begins operation, and its control system starts detecting various commands and parameters from temperature sensors within the system.

[0084] S1, the control system detects the battery pack heating command and at the same time detects that the battery pack temperature is lower than the set value d, where the value of d is in the range of 15℃~20℃. It controls the second solenoid valve 32 to open and the thermal management system switches to the battery pack heating mode.

[0085] S2, the control system detects the cabin cooling command and at the same time detects that the cabin temperature is higher than the set value a, where the value of a is in the range of 25℃~30℃. It controls the first solenoid valve 31 to open and the thermal management system switches to cabin cooling mode.

[0086] S3, the control system detects a cabin temperature rise command and simultaneously detects that the cabin temperature is lower than the set value c, where c ranges from 13℃ to 18℃. It then controls the third solenoid valve 33 to open and confirms the valve core opening value of the fifth electronic expansion valve 45 based on the difference.

[0087] S4: The control system detects a battery pack cooling command and simultaneously detects that the battery pack temperature is higher than a set value b, where b ranges from 25℃ to 28℃. It then controls the fourth solenoid valve 34 to open, switching the thermal management system to battery pack cooling mode.

[0088] S5, the control system detects the difference between the cabin temperature setpoint and the inner condenser temperature, and uses this to control the opening of the third electronic expansion valve 43.

[0089] S6, the control system detects the difference between the current temperature and the target temperature of the battery pack, and uses it to control the opening size of the valve cores of the first electronic expansion valve 41 and the second electronic expansion valve 42.

[0090] S7, the control system detects the difference between the temperature of the inner evaporator and the set temperature of the cabin, and uses it to control the opening of the fourth electronic expansion valve 44.

[0091] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A double-layer multi-channel integrated valve, characterized in that, include: A valve body (1) has multiple internal flow channels arranged in a first layer and a second layer along the thickness direction of the valve body (1). The valve body (1) includes a first end face, a second end face, and an outer peripheral sidewall located between the first end face and the second end face. Multiple pipe interfaces are spaced apart along the circumference of the outer peripheral sidewall. The two ends of each internal flow channel are located in the corresponding pipe interface. The pipe interfaces include a first interface (a), a second interface (b), a ninth interface (i), and a tenth interface (j). The internal flow channels include a first interface (a), a second interface (b), a ninth interface (i), and a tenth interface (j). The flow channel (21), the second flow channel (22), and the third flow channel (23) are provided, wherein the first flow channel (21) and the second flow channel (22) are located in the first layer, the third flow channel (23) is located in the second layer, the first flow channel (21), the second flow channel (22), and the third flow channel (23) are respectively located at the first interface (a), the second end of the first flow channel (21) is located in the second interface (b), the second end of the second flow channel (22) is located in the tenth interface (j), and the second end of the third flow channel (23) is located in the ninth interface (i).

2. The dual-layer multi-channel integrated valve according to claim 1, characterized in that, The pipe interface further includes a fifth interface (e), a sixth interface (f), a seventh interface (g), and an eighth interface (h). The internal flow channels further include a fourth flow channel (24), a fifth flow channel (25), a sixth flow channel (26), and a seventh flow channel (27). The fourth flow channel (24) and the fifth flow channel (25) are located in the second layer, and the sixth flow channel (26) and the seventh flow channel (27) are located in the first layer. The first end of each of the fourth flow channel (24), the fifth flow channel (25), the sixth flow channel (26), and the seventh flow channel (27) is located in the seventh interface (g). The second end of the fourth flow channel (24) is located in the ninth interface (i). The second end of the fifth flow channel (25) is located in the fifth interface (e). The second end of the sixth flow channel (26) is located in the eighth interface (h). The second end of the seventh flow channel (27) is located in the sixth interface (f).

3. The dual-layer multi-channel integrated valve according to claim 2, characterized in that, The pipe interface further includes a third interface (c) and a fourth interface (d), and the internal flow channel further includes an eighth flow channel (28), a ninth flow channel (29) and a tenth flow channel (210), wherein the eighth flow channel (28) and the ninth flow channel (29) are located in the first layer, the tenth flow channel (210) is located in the second layer, the first end of the eighth flow channel (28), the ninth flow channel (29) and the tenth flow channel (210) are respectively located in the third interface (c), the second end of the eighth flow channel (28) is located in the fourth interface (d), the second end of the ninth flow channel (29) is located in the second interface (b), and the second end of the tenth flow channel (210) is located in the fifth interface (e).

4. The dual-layer multi-channel integrated valve according to claim 3, characterized in that, The internal flow channel also includes an eleventh flow channel (211), the first end of which is located within the eighth interface (h), and the second end of which is located within the ninth interface (i).

5. The dual-layer multi-channel integrated valve according to claim 4, characterized in that, Projected onto the first end face, the outer peripheral sidewall is a regular decagon, and each of the pipe interfaces is set one-to-one with each side of the regular decagon.

6. The dual-layer multi-channel integrated valve according to claim 4, characterized in that, The valve body (1) is also equipped with an integrated solenoid valve assembly, which includes a first solenoid valve (31), a second solenoid valve (32), a third solenoid valve (33), a fourth solenoid valve (34), a first electronic expansion valve (41), a second electronic expansion valve (42), a third electronic expansion valve (43), a fourth electronic expansion valve (44), and a fifth electronic expansion valve (45). The first solenoid valve (31) is connected in series to the first flow channel (21), the second solenoid valve (32) is connected in series to the third flow channel (23), and the first electronic... An expansion valve (41) is connected in series to the fourth flow channel (24), a second electronic expansion valve (42) is connected in series to the fifth flow channel (25), a third electronic expansion valve (43) is connected in series to the sixth flow channel (26), a fourth electronic expansion valve (44) is connected in series to the seventh flow channel (27), a third solenoid valve (33) is connected in series to the ninth flow channel (29), a fourth solenoid valve (34) is connected in series to the tenth flow channel (210), and a fifth electronic expansion valve (45) is connected in series to the eleventh flow channel (211).

7. The dual-layer multi-channel integrated valve according to claim 6, characterized in that, The solenoid valve assembly is assembled on the first end face, and the first solenoid valve (31), the third solenoid valve (33), the third electronic expansion valve (43), and the fourth electronic expansion valve (44) are installed in the concave area of ​​the first end face.

8. The dual-layer multi-channel integrated valve according to claim 6, characterized in that, The valve body (1) has a clearance through hole (11) at its central position. The clearance through hole (11) passes through the first end face and the second end face. Each of the internal flow channels is constructed in the area between the hole wall of the clearance through hole (11) and the outer peripheral side wall. The solenoid valve assembly is assembled in the area between the hole wall of the clearance through hole (11) and the outer peripheral side wall.

9. The dual-layer multi-channel integrated valve according to claim 6, characterized in that, The first end face is also provided with a plurality of coil fixing holes (12), each of which is used to fix each electromagnetic coil in the electromagnetic valve group.

10. The dual-layer multi-channel integrated valve according to claim 1, characterized in that, The pipe interface includes a pipe fitting section (51) and a pipe connection hole (52) located on the free end face of the pipe fitting section.

11. A vehicle thermal management system, characterized in that, It includes a unit battery cooling module (100), an outer heat exchanger (200), an inner evaporator (301), an inner condenser (302), a compressor (400), and a double-layer multi-channel integrated valve as described in any one of claims 1 to 10.

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