Gas-liquid separation joint, expansion kettle, thermal management system and vehicle

Abstract

The utility model discloses a gas-liquid separation joint, an expansion kettle, a thermal management system and a vehicle, the gas-liquid separation joint comprises a pipe fitting, the pipe fitting comprises a first pipe part and a second pipe part, the first pipe part extends along a first direction, and two ends of the first pipe part in the first direction are respectively provided with a first interface and a second interface; the second pipe part extends in the second direction and communicates with the first pipe part. A third connector is formed in the end, away from the first pipe part, of the second pipe part. The partition piece comprises a first partition part and a second partition part, the first partition part is arranged in the first pipe part and extends in the first direction, the second partition part is arranged in the second pipe part and extends in the second direction, and the second partition part is connected with the first partition part. The gas-liquid separation device has a better gas-liquid separation effect, is beneficial to simplifying the connecting structure of the expansion kettle and the cooling loop, reducing the number of parts, improving the connecting reliability of the expansion kettle and the cooling loop, and also can reduce the cost and save the space.

Description

Technical Field

[0001] This application relates to the field of gas-liquid separation technology, and in particular to a gas-liquid separation connector, an expansion tank, a thermal management system, and a vehicle. Background Technology

[0002] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, the thermal management system, as the temperature control system, plays an irreplaceable and crucial role. Current electric vehicle thermal management systems have multiple coolant circuits, which are quite complex. Each cooling circuit is typically equipped with an expansion tank, whose main functions are to replenish coolant and vent air from the cooling circuit. The expansion tank and the cooling circuit are generally connected in series or in parallel. Because the parallel connection has more significant advantages, the expansion tank is mostly connected to the cooling circuit in parallel. This requires a large number of adapters and pipes between the expansion tank and the cooling circuit, resulting in a complex connection structure that occupies more space and affects the reliability of the expansion tank's installation. Utility Model Content

[0003] This application provides a gas-liquid separation connector, an expansion tank, a thermal management system, and a vehicle, which can effectively simplify the connection structure of the expansion tank and the cooling circuit and improve the installation reliability of the expansion tank.

[0004] In a first aspect, embodiments of this application provide a gas-liquid separation connector, comprising: a pipe fitting including a first pipe section and a second pipe section, the first pipe section extending along a first direction, and a first interface and a second interface respectively formed at both ends of the first pipe section in the first direction; a second pipe section extending along a second direction and communicating with the first pipe section, and a third interface formed at one end of the second pipe section away from the first pipe section; and a separator including a first separator section and a second separator section, the first separator section being disposed within the first pipe section and extending along the first direction, the second separator section being disposed within the second pipe section and extending along the second direction, and the second separator section being connected to the first separator section.

[0005] In the above technical solution, the gas-liquid separator with the above structure allows the expansion tank and the cooling circuit of the thermal management system to be connected in parallel. Since the pipe includes a first pipe section and a second pipe section, and the separator includes a first partition section and a second partition section, the first partition section divides the interior of the first pipe section into two flow channels. Coolant containing fewer or no air bubbles flows directly from the flow channel on the side of the first partition section away from the second pipe section to the outlet, which improves the flowability of the coolant within the gas-liquid separator and enhances the coolant circulation effect. Coolant containing more air bubbles flows from the flow channel on the side of the first partition section closer to the second pipe section to the second pipe section. The second partition section acts as a turbulence breaker in the second pipe section, interfering with the coolant flow path, thereby increasing the coolant flow path and duration, which is beneficial for the complete separation of air bubbles into the coolant, resulting in a better gas-liquid separation effect. The gas-liquid separator with the above structure also simplifies the connection structure between the expansion tank and the cooling circuit, reduces the number of parts, improves the connection reliability between the expansion tank and the cooling circuit, and also reduces costs and saves space.

[0006] In some embodiments of this application, the first partition includes a first part and a second part, the first part being disposed on the side of the second partition near the first interface, and the second part being disposed on the other side of the second partition near the second interface.

[0007] In the above technical solution, the second partition is connected to the first partition, and the first partition is formed into a first part and a second part located on both sides of the second partition. Thus, the first part can be divided into two flow channels near the first interface of the first pipe, and the second part can also be divided into two flow channels near the second interface of the first pipe. This allows the first interface or the second interface to be an inlet, and there is no flow channel direction requirement for the first pipe. This can reduce the risk of reverse installation during use of the gas-liquid separation connector, reduce the probability of installation errors, and improve the usability of the gas-liquid separation connector.

[0008] In some embodiments of this application, a through opening is formed between the second pipe portion and the first pipe portion, the first portion extends toward the first interface and beyond the boundary of the through opening, and the second portion extends toward the second interface and beyond the boundary of the through opening.

[0009] In the above technical solution, the above structure is beneficial to enable the coolant to be better separated before entering the second pipe section, so that more air bubbles in the coolant can be concentrated and flow to the second pipe section, reducing the probability of air bubbles flowing away from the side of the first separator away from the second pipe section, and thus improving the gas-liquid separation effect.

[0010] In some embodiments of this application, a first turbulence structure is provided on the side of the first partition near the second pipe, and / or, at least one side of the second partition near the first partition is provided with a second turbulence structure. In the above technical solution, when bubble-rich coolant flows through the side of the first partition near the second pipe, the first turbulence structure can turbulently flow through the coolant, causing it to flow turbulently. This helps to expel bubbles from the coolant, improving the gas-liquid separation effect. Furthermore, it can slow down the flow rate of the coolant, providing a longer time for the separation of bubbles and coolant, further enhancing the gas-liquid separation effect. When bubble-rich coolant enters the second pipe, the second turbulence structure can turbulently flow through the coolant, causing it to flow turbulently. This helps to expel bubbles from the coolant, improving the gas-liquid separation effect. Furthermore, it can slow down the flow rate of the coolant, providing a longer time for the separation of bubbles and coolant, further enhancing the gas-liquid separation effect.

[0011] In some embodiments of this application, when the first partition is provided with a first turbulence structure, the first turbulence structure includes a plurality of first protrusions, which are spaced apart along a first direction and extend along a third direction perpendicular to the first direction. In the above technical solution, the first protrusions are elongated and are spaced apart along the first direction, thereby forming a wave-like structure, which can achieve a high turbulence effect and is beneficial to improving the gas-liquid separation effect.

[0012] In some embodiments of this application, when the second partition is provided with a second turbulence structure, the second turbulence structure includes a plurality of second protrusions, which are spaced apart along a second direction and extend along a third direction perpendicular to the second direction. In the above technical solution, the second protrusions are elongated and are spaced apart along the second direction, thereby forming a wave-like structure, which can achieve a high turbulence effect and is beneficial to improving the gas-liquid separation effect.

[0013] In some embodiments of this application, the first partition divides the interior of the first tube into a first flow channel and a second flow channel, with the second flow channel being closer to the second tube than the first flow channel; one of the first interface and the second interface is configured as an inlet; the second partition divides the interior of the second tube into a third flow channel and a fourth flow channel in a first direction, with the third flow channel being closer to the inlet than the fourth flow channel; wherein the flow channel height of the second flow channel is greater than the flow channel height of the third flow channel.

[0014] In the above technical solution, since the height of the second flow channel is greater than that of the third flow channel, the flow rate of the coolant decreases after it flows from the second flow channel into the third flow channel. Due to the sudden change in flow rate, the coolant can form a turbulence phenomenon after entering the third flow channel, which improves the gas-liquid separation effect. Moreover, the decrease in flow rate can also increase the time to pass through the third flow channel, allowing bubbles more time to detach from the coolant and flow to the third interface of the second pipe, thereby improving the gas-liquid separation effect.

[0015] In some embodiments of this application, the width of the first tube is equal to the width of the second tube, and the center plane passes through the center of the second tube and is parallel to the second direction. The second partition is located on the side of the center plane away from the inlet.

[0016] In the above technical solution, while ensuring that the flow channel height of the second flow channel is greater than that of the third flow channel, the shape and size of the first and second pipe sections are consistent, and the gas-liquid separation joint is relatively regular as a whole, which facilitates the assembly of the first and second pipe sections with other components and helps to improve the overall versatility of the gas-liquid separation joint.

[0017] In some embodiments of this application, the second pipe portion includes a first pipe segment and a second pipe segment connected together, the first pipe segment being connected to the first pipe portion, and the width of the first pipe segment being greater than the width of the first pipe portion.

[0018] In the above technical solution, under the requirement that the flow channel height of the second flow channel is greater than that of the third flow channel, the first section of the second pipe can be set to have a width greater than that of the first pipe. Using this method, the internal structure of the gas-liquid separation connector is relatively simple, which can reduce manufacturing difficulty and cost.

[0019] In some embodiments of this application, the gas-liquid separation connector includes a blocking portion, which is disposed within the second pipe section and extends along a second direction, and is located between the second partition and the third interface. In the above technical solution, the blocking portion can block the separated gas in the second pipe section, reducing the probability of the gas being carried back to the first pipe section by the coolant, thereby improving the gas-liquid separation effect of the coolant in the second pipe section.

[0020] Secondly, this application also provides an expansion kettle, comprising: a liquid storage container having a liquid outlet; and a gas-liquid separation connector as described above, wherein the gas-liquid separation connector is connected to the liquid outlet via a third interface.

[0021] In the above technical solution, by adopting this gas-liquid separation connector, the connection structure can be simplified while ensuring parallel connection between the liquid storage container and the cooling circuit. This reduces the number of parts and lowers the cost. Moreover, the simpler connection structure can improve the connection reliability between the liquid storage container and the cooling circuit.

[0022] Thirdly, embodiments of this application also provide a thermal management system, including the expansion kettle as described above.

[0023] In the above technical solution, the use of this expansion tank can effectively separate gas and liquid in the cooling circuit, reduce the risk of cavitation, improve the stability of system pressure, and improve heat dissipation efficiency, thereby improving the reliability of the thermal management system.

[0024] Fourthly, embodiments of this application also provide a vehicle including the thermal management system described above.

[0025] In the above technical solution, since the thermal management system has high reliability, the adoption of this thermal management system can improve the thermal management reliability of the vehicle. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0028] Figure 2 A partial structural schematic diagram of a thermal management system provided in some embodiments of this application;

[0029] Figure 3 This is a schematic diagram of the structure of a gas-liquid separation connector provided in some embodiments of this application;

[0030] Figure 4 A three-dimensional schematic diagram of the internal structure of a gas-liquid separation connector provided in some embodiments of this application;

[0031] Figure 5 This is a schematic diagram of the internal structure of a gas-liquid separation connector provided in some embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the internal structure of a gas-liquid separation connector provided in another embodiment of this application;

[0033] Figure 7 A schematic diagram of the internal structure of a gas-liquid separation connector provided in yet another embodiment of this application;

[0034] Figure 8 A schematic diagram of the internal structure of a gas-liquid separation connector provided in another embodiment of this application;

[0035] Figure 9 This is a schematic diagram of the structure of an expansion tank provided in some embodiments of this application.

[0036] icon:

[0037] 10. Gas-liquid separation connector;

[0038] 11. Pipe fittings;

[0039] 111, First tube section; 111a, First interface; 111b, Second interface; 1101, First flow channel; 1102, Second flow channel;

[0040] 112, Second pipe section; 112a, Third interface; 1103, Third flow channel; 1104, Fourth flow channel; 1121, First pipe section; 1122, Second pipe section;

[0041] 113. Through-passage;

[0042] 12. Separator;

[0043] 121. First dividing section; 1211. First part; 1212. Second part;

[0044] 122. Second partition;

[0045] 123. First spoiler structure; 1231. First protrusion;

[0046] 124. Second spoiler structure; 1241. Second convex part;

[0047] 13. Blocking part; 14. Center surface;

[0048] 100. Expansion vessel; 20. Liquid storage container; 20a. Liquid outlet; 20b. Liquid filling port;

[0049] 200. Thermal management system; 210. Cooling circuit;

[0050] 1000, Vehicles. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0053] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In this application, the term "and / or" 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, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0056] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0057] In this application, "multiple" means two or more (including two).

[0058] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, the power battery, as the power source, plays an irreplaceable and crucial role. Current electric vehicle thermal management systems have multiple coolant circuits, which are quite complex. Each cooling circuit is typically equipped with an expansion tank, whose main functions are to replenish coolant and vent heat. The expansion tank and cooling circuit are generally connected in series or parallel. However, the series connection suffers from high noise, high flow resistance, and significant heat loss, but offers faster venting. The parallel connection, while slower venting, produces less noise, lower flow resistance, and less heat loss. Therefore, the expansion tank and cooling circuit are usually connected in parallel. However, this requires a large number of adapters and pipes, resulting in a complex connection structure that occupies a significant amount of space and affects the reliability of the expansion tank's installation.

[0059] In the thermal management system of a typical electric vehicle, in order to connect the expansion tank in parallel with the cooling circuit, a liquid replenishment pipe, a liquid replenishment tee connector, an exhaust tee connector, an exhaust pipe, and corresponding fastening clamps are required. As a result, the connection structure between the expansion tank and the cooling circuit is relatively complex, and the exhaust pipe is also relatively long. This leads to a large space occupation, which in turn increases the cost. Moreover, the more complex connection structure has a higher risk of failure and will also affect the installation reliability of the expansion tank.

[0060] Based on the above considerations, and to address the issue of the complex connection structure between the expansion tank and the cooling circuit, which affects installation reliability, the applicant has designed a gas-liquid separation connector, including a pipe and a separator. The pipe includes a first pipe section and a second pipe section. The first pipe section extends along a first direction, and a first interface and a second interface are formed at its two ends in the first direction, respectively. The second pipe section extends along a second direction and connects to the first pipe section, and a third interface is formed at the end of the second pipe section away from the first pipe section. The separator includes a first separator and a second separator. The first separator is disposed within the first pipe section and extends along the first direction, and the second separator is disposed within the second pipe section and extends along the second direction, and the second separator connects to the first separator.

[0061] In this type of gas-liquid separator joint, the expansion tank and the cooling circuit of the thermal management system can be connected in parallel. Since the pipe section includes a first pipe section and a second pipe section, and the separator includes a first partition section and a second partition section, the first partition section divides the interior of the first pipe section into two flow channels. Coolant containing fewer or no air bubbles flows directly from the flow channel away from the second pipe section in the first partition section to the outlet, which improves the flowability of the coolant within the gas-liquid separator joint and enhances the coolant circulation effect. Coolant containing more air bubbles flows from the flow channel closer to the second pipe section in the first partition section to the second pipe section. The second partition section acts as a turbulence breaker in the second pipe section, interfering with the coolant flow path, thereby increasing the coolant flow path and duration, which is beneficial for the complete separation of air bubbles into the coolant, resulting in better gas-liquid separation. This gas-liquid separator joint structure also simplifies the connection between the expansion tank and the cooling circuit, reduces the number of parts, improves the connection reliability between the expansion tank and the cooling circuit, and also reduces costs and saves space.

[0062] The gas-liquid separation connector disclosed in this application can be used, but is not limited to, in thermal management systems, hydraulic systems, oil and gas extraction and transportation systems, aerospace and fuel systems, etc.

[0063] This application provides an expansion tank using a gas-liquid separation connector, and a thermal management system using the expansion tank. The thermal management system can be applied to vehicles. The thermal management system may include, but is not limited to, air conditioning thermal management, battery thermal management, electric drive thermal management, and electronic control thermal management. The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles may include pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles.

[0064] For ease of explanation, the following embodiments use a vehicle 1000 according to an embodiment of this application as an example.

[0065] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a fuel-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc. The vehicle 1000 is equipped with a battery, which can be located at the bottom, front, or rear of the vehicle 1000. The vehicle 1000 is also equipped with a thermal management system 200, which can include air conditioning thermal management, battery thermal management, electric drive thermal management, and electronic control thermal management, used to control the temperature of components such as the air conditioner, battery, electric drive, or electronic control system.

[0066] Please refer to Figure 2 , Figure 2This is a partial structural schematic diagram of a thermal management system 200 provided in some embodiments of this application. The thermal management system 200 may include multiple cooling circuits 210, and an expansion tank 100 is provided on the cooling circuit 210. The expansion tank 100 includes a liquid storage container 20 and a gas-liquid separation connector 10. The liquid storage container 20 can play the role of venting and replenishing liquid, and can be connected to the cooling circuit 210 through the gas-liquid separation connector 10.

[0067] According to some embodiments of this application, refer to Figures 2 to 5 This application provides a gas-liquid separation connector 10, including a pipe 11 and a separator 12. The pipe 11 includes a first pipe section 111 and a second pipe section 112. The first pipe section 111 extends along a first direction X, and a first interface 111a and a second interface 111b are formed at both ends of the first pipe section 111 along the first direction X. The second pipe section 112 extends along a second direction Y and communicates with the first pipe section 111, and a third interface 112a is formed at the end of the second pipe section 112 away from the first pipe section 111. The separator 12 includes a first separator 121 and a second separator 122. The first separator 121 is disposed within the first pipe section 111 and extends along the first direction X, and the second separator 122 is disposed within the second pipe section 112 and extends along the second direction Y, and the second separator 122 is connected to the first separator 121.

[0068] Pipe fitting 11 can refer to a component in a piping system or pipeline system used for connecting, controlling, changing the direction of fluid flow, branching, and sealing functions; it is an important component constituting the piping system or pipeline system. The material of pipe fitting 11 can be, but is not limited to, metallic or non-metallic materials. Metallic materials can include, but are not limited to, cast iron, carbon steel, stainless steel, etc., while non-metallic materials can include, but are not limited to, plastic, ceramic, etc. The cross-section of pipe fitting 11 can be, but is not limited to, circular, square, elliptical, etc. The first pipe section 111 and the second pipe section 112 can be two parts constituting pipe fitting 11.

[0069] The first interface 111a, the second interface 111b, and the third interface 112a can refer to connection ports for connecting to external pipes or other components. The first direction X and the second direction Y can refer to two directions arranged at an angle; therefore, the first pipe section 111 and the second pipe section 112 can be arranged at an angle, and can be, but is not limited to, 90 degrees, 100 degrees, 120 degrees, etc. (Refer to...) Figure 4 The first direction X can be left or right, and the second direction Y can be up or down.

[0070] The partition 12 can refer to a partition component that divides the internal space within the tube 11. The first partition 121 and the second partition 122 can refer to two components of the partition 12, and the first partition 121 and the second partition 122 can be, but are not limited to, straight plates or generally straight components. Referring to the above, depending on the angle between the first tube 111 and the second tube 112, the first partition 121 and the second partition 122 can be, but are not limited to, vertically connected or arranged at other angles.

[0071] The first partition 121 is disposed inside the first tube 111. This can mean that the first partition 121 is located on both sides in the first direction X and connected to the inner wall of the first tube 111, thereby dividing the interior of the first tube 111 into two flow channels, namely, the first flow channel 1101 and the second flow channel 1102. For ease of understanding, refer to... Figure 3 The first flow channel 1101 and the second flow channel 1102 can be arranged vertically. The second partition 122 is provided inside the second tube 112, which means that the second partition 122 is located on both sides in the first direction X and connected to the inner wall of the second tube 112, thereby dividing the interior of the second tube 112 into two flow channels, namely, the third flow channel 1103 and the fourth flow channel 1104, wherein the third flow channel 1103 is close to the second flow channel 1102 and is connected to the second flow channel 1102.

[0072] Reference Figure 2 The first pipe section 111 can be connected in series in the cooling circuit 210. One of the first interface 111a and the second interface 111b can be an inlet and the other an outlet, connected to both ends of the cooling circuit 210. The third interface 112a of the second pipe section 112 can be used to connect to the liquid storage container 20. (Refer to...) Figure 4 and Figure 5 ( Figure 5 (The arrow points to the direction of coolant flow). When the thermal management system 200 is working, the coolant flows through the first pipe section 111 in the first direction X. When the coolant contains gas, since the gas density is less than that of the liquid, the coolant can be roughly divided into two layers: an upper region and a lower region. The coolant in the upper region contains more bubbles or all bubbles are collected, while the coolant in the lower region contains fewer bubbles or no bubbles. When the coolant passes through the first partition 121, the coolant in the lower region flows along the first flow channel 1101 to the outlet, and the coolant in the lower region flows along the second flow channel 1102. Under the action of the second partition 122, it enters the third flow channel 1103 in the second pipe section 112, and then flows along the fourth flow channel 1104 to the outlet of the first pipe section 111.

[0073] When the coolant releases air bubbles as it flows towards the second pipe section 112, it passes through the second partition section 122. At this point, the second partition section 122 interferes with the coolant flow, preventing it from flowing directly back to the first pipe section 111. Instead, it directs the coolant to flow along the third flow channel 1103 and the fourth flow channel 1104, effectively turbulent the flow. As the coolant flows along the third and fourth flow channels 1103 and 1104, the air bubbles separate from the coolant due to their own buoyancy and flow upwards towards the third interface 112a, ultimately entering the storage container 20. This achieves gas-liquid separation of the coolant. Furthermore, because the flow path of the coolant within the third and fourth flow channels 1103 and 1104 is relatively long, the gas-liquid separation time is extended, improving the gas-liquid separation efficiency and thus enhancing the gas-liquid separation effect.

[0074] Secondly, since the liquid storage container 20 is connected to the second pipe section 112, the liquid in the liquid storage container 20 can enter the first pipe section 111 along the second pipe section 112, thereby replenishing the coolant in the cooling circuit 210.

[0075] In the above technical solution, the gas-liquid separator 10 with the above structure can connect the expansion tank 100 and the cooling circuit 210 of the thermal management system 200 in parallel. Since the pipe 11 includes a first pipe section 111 and a second pipe section 112, and the separator 12 includes a first separator section 121 and a second separator section 122, the first separator section 121 can divide the interior of the first pipe section 111 into two flow channels. Coolant containing fewer or no air bubbles flows directly from the flow channel on the side of the first separator section 121 away from the second pipe section 112 to the outlet, which is beneficial to improving the smoothness of the coolant in the gas-liquid separator 10 and can improve the coolant flow effect. Coolant containing more air bubbles can flow from the flow channel on the side of the first separator section 121 closer to the second pipe section 112 to the second pipe section 112. The second separator section 122 can play a turbulence role in the second pipe section 112, interfering with the flow path of the coolant, thereby increasing the flow path and duration of the coolant, which is beneficial to the full separation of air bubbles in the coolant, and has a better gas-liquid separation effect. The gas-liquid separation connector 10 with the above structure can also simplify the connection structure between the expansion tank 100 and the cooling circuit 210, reduce the number of parts, improve the connection reliability between the expansion tank 100 and the cooling circuit 210, and also reduce costs and save space.

[0076] In some embodiments of this application, reference is made to Figure 5 The first partition 121 includes a first part 1211 and a second part 1212. The first part 1211 is located on the side of the second partition 122 near the first interface 111a, and the second part 1212 is located on the other side of the second partition 122 near the second interface 111b.

[0077] It is understood that the second partition 122 may be connected to the center of the first partition 121, or the second partition 122 may be located near the center of the first partition 121 and connected to the first partition 121. The second partition 122 may also be connected to other non-end locations of the first partition 121. That is, in the above example, the partition 12 as a whole may be, but is not limited to, "T-shaped", "Y-shaped", etc., and the second partition 122 can divide the first partition 121 into two parts, namely, the first part 1211 and the second part 1212, and the dimensions of the first part 1211 and the second part 1212 in the first direction X may be equal or unequal.

[0078] In the above technical solution, the second partition 122 is connected to the first partition 121, and the first partition 121 is formed into a first part 1211 and a second part 1212 located on both sides of the second partition 122. Thus, the first part 1211 can be divided into two flow channels at the position of the first pipe 111 near the first interface 111a, and the second part 1212 can also be divided into two flow channels at the position of the first pipe 111 near the second interface 111b. This allows the first interface 111a or the second interface 111b to be an inlet, and the first pipe 111 has no flow channel direction requirement. This can reduce the risk of reverse installation during use of the gas-liquid separator 10, reduce the probability of installation errors, and improve the usability of the gas-liquid separator 10.

[0079] In some embodiments of this application, the dimensions of the first portion 1211 and the second portion 1212 can be equal in the first direction X. Using this technical solution, regardless of whether the first tube 111 receives liquid from the first interface 111a or the second interface 111b, the first portion 1211 and the second portion 1212 can have the same gas-liquid separation effect, which helps to ensure the performance consistency of the first tube 111 when liquid is received from both the first interface 111a and the second interface 111b.

[0080] In some embodiments of this application, the first partition 121 and the second partition 122 are flat plate-shaped components. The fact that the first partition 121 and the second partition 122 are flat plates has two advantages: firstly, it facilitates processing and manufacturing, which helps to reduce the manufacturing difficulty of the gas-liquid separation connector 10; secondly, the flat plates help to separate the internal space of the first pipe section 111 and the second pipe section 112, which can improve the smoothness of coolant flow.

[0081] In some embodiments of this application, reference is made to Figure 5 A through opening 113 is formed between the second tube portion 112 and the first tube portion 111. The first portion 1211 extends toward the first interface 111a and beyond the boundary of the through opening 113, and the second portion 1212 extends toward the second interface 111b and beyond the boundary of the through opening 113.

[0082] "The boundary of the through-hole 113" can refer to the edge line that encloses the through-hole 113. That is, on the reference plane parallel to the first partition 121, the projection of the first part 1211 on the reference plane is located outside the projection plane of the through-hole 113 on the reference plane. Similarly, the projection of the second part 1212 on the reference plane is located outside the projection plane of the through-hole 113 on the reference plane.

[0083] For example, refer to Figure 5 The above scheme can also be understood as follows: in the first direction, the size of the first part 1211 is greater than the maximum size between the second partition 122 and the third flow channel 1103, and the size of the second part 1212 is greater than the maximum size between the second partition 122 and the fourth flow channel 1104.

[0084] The first part 1211 can extend to the first interface 111a or be spaced at a preset distance from the first interface 111a, and the second part 1212 can also extend to the second interface 111b or be spaced at a preset distance from the second interface 111b. No specific restrictions are imposed here.

[0085] In the above technical solution, the above structure is beneficial to enable the coolant to be better separated before entering the second pipe section 112, so that more bubbles in the coolant can be concentrated and flow to the second pipe section 112, reducing the probability of bubbles flowing away from the side of the first separator 121 away from the second pipe section 112, and improving the gas-liquid separation effect.

[0086] In some embodiments of this application, reference is made to Figure 6 One of the first interface 111a and the second interface 111b is configured as an inlet, and the first partition 121 is located on the side of the second partition 122 near the inlet.

[0087] In other words, the first partition 121 is only arranged on the side of the second partition 122 near the inlet, and the partition 12 as a whole may be, but is not limited to, “L-shaped”, “V-shaped”, etc.

[0088] In the above technical solution, the structure of the separator 12 can be simplified. While ensuring good gas-liquid separation effect, it is conducive to simplifying the manufacturing process, reducing manufacturing difficulty and cost, improving product yield, and also reducing the weight of the gas-liquid separation connector 10, which is convenient for assembly or transportation.

[0089] In some embodiments of this application, reference is made to Figures 4 to 8 The first partition 121 is provided with a first turbulence structure 123 on the side near the second pipe section 112.

[0090] The first turbulence structure 123 can refer to a structure that can interfere with the flow of coolant to change the flow direction of coolant, and can be, but is not limited to, a corrugated structure, a channel structure, a rib structure, or a porous structure, etc.

[0091] In the above technical solution, when the coolant rich in bubbles flows through the first partition 121 near the second pipe 112, the first turbulence structure 123 can turbulentize the passing coolant, causing the coolant to flow turbulently. This helps to expel the bubbles from the coolant, improves the gas-liquid separation effect, and also slows down the flow rate of the coolant, thus providing a longer time for the bubbles to separate from the coolant, which can further improve the gas-liquid separation effect.

[0092] In some embodiments of this application, reference is made to Figures 4 to 8 The first turbulence structure 123 includes a plurality of first protrusions 1231, which are spaced apart along a first direction X. The first protrusions 1231 extend along a third direction Z, which is perpendicular to the first direction X.

[0093] The first protrusion 1231 can refer to a structure that protrudes from the surface of the first partition 121. The cross-sectional shape of the first protrusion 1231 in the direction perpendicular to the third direction Z can be, but is not limited to, a cone shape, a frustum shape, etc.

[0094] In the above technical solution, the first protrusion 1231 is elongated and is arranged in multiple intervals along the first direction X. Thus, the multiple first protrusions 1231 can form a wave-shaped structure, which can play a high turbulence effect and help improve the gas-liquid separation effect.

[0095] In some embodiments of this application, reference is made to Figures 4 to 8 The second partition 122 is provided with a second turbulence structure 124 on at least one side near the first partition 121.

[0096] The second flow-disrupting structure 124 can refer to a structure that can interfere with the flow of coolant to change its flow direction. It can be, but is not limited to, a corrugated structure, a channel structure, a rib structure, or a porous structure, etc. Refer to the previous example, see... Figure 5 Each of the two opposite sides of the second partition 122 may be provided with a first partition 121, thereby allowing a second flow-deflecting structure 124 to be provided on both sides of the second partition 122, or the second flow-deflecting structure 124 to be provided on the side closer to the inlet. (Refer to...) Figure 6 The second partition 122 is provided with the first partition 121 on the side near the inlet. At this time, the second partition 122 may be provided with the second turbulence structure 124 only on the side near the first partition 121.

[0097] In the above technical solution, when the coolant rich in bubbles enters the second pipe section 112, the second turbulence structure 124 can turbulentize the passing coolant, causing the coolant to flow turbulently. This helps to expel the bubbles from the coolant, improves the gas-liquid separation effect, and also slows down the flow rate of the coolant, thus providing a longer time for the bubbles to separate from the coolant, which can further improve the gas-liquid separation effect.

[0098] In some embodiments of this application, reference is made to Figures 4 to 8 The second turbulence structure 124 includes a plurality of second protrusions 1241, which are spaced apart along the second direction Y and extend along the third direction Z, which is perpendicular to the second direction Y.

[0099] The second protrusion 1241 can refer to a structure that protrudes from the surface of the second partition 122. The cross-sectional shape of the second protrusion 1241 in the direction perpendicular to the third direction Z can be, but is not limited to, a cone shape, a frustum shape, etc.

[0100] In the above technical solution, the second protrusion 1241 is elongated and is arranged in multiple intervals along the second direction Y. Thus, the multiple second protrusions 1241 can form a wave-shaped structure, which can play a high turbulence effect and help improve the gas-liquid separation effect.

[0101] In some embodiments of this application, reference is made to Figure 7 and Figure 8 The first partition 121 divides the interior of the first tube 111 into a first flow channel 1101 and a second flow channel 1102. The second flow channel 1102 is closer to the second tube 112 than the first flow channel 1101. One of the first interface 111a and the second interface 111b is configured as an inlet. The second partition 122 divides the interior of the second tube 112 in the first direction X into a third flow channel 1103 and a fourth flow channel 1104. The third flow channel 1103 is closer to the inlet than the fourth flow channel 1104. The flow channel height of the second flow channel 1102 is greater than the flow channel height of the third flow channel 1103.

[0102] The greater height of the second flow channel 1102 than the third flow channel 1103 can refer to the cross-sectional height dimension perpendicular to the coolant flow direction. (Refer to...) Figure 7 and Figure 8 "The flow channel height of the second flow channel 1102" can refer to the maximum dimension of the second flow channel 1102 in the second direction Y, such as H1; "the flow channel height of the third flow channel 1103" can refer to the maximum dimension of the third flow channel 1103 in the first direction X, such as H2.

[0103] In the above technical solution, since the flow height of the second flow channel 1102 is greater than that of the third flow channel 1103, the flow rate of the coolant decreases after it flows from the second flow channel 1102 into the third flow channel 1103. Due to the sudden change in flow rate, the coolant can form a turbulence phenomenon after entering the third flow channel 1103, which has a good turbulence effect and can improve the gas-liquid separation effect. Moreover, the decrease in flow rate can also increase the time to pass through the third flow channel 1103, allowing bubbles more time to detach from the coolant and flow to the third interface 112a of the second pipe 112, thereby improving the gas-liquid separation effect.

[0104] In some embodiments of this application, reference is made to Figure 7 The width of the first tube 111 is equal to the width of the second tube 112. The center plane 14 passes through the center of the second tube 112 and is parallel to the second direction Y. The second partition 122 is provided on the side of the center plane 14 away from the inlet.

[0105] The center plane 14 can refer to the plane that bisects the second tube section 112 equally in the first direction X. It is understood that the first tube section 111 and the second tube section 112 are of equal shape and size, and the second partition 122 is eccentrically arranged in the second tube section 112, so that the height of the third flow channel 1103 formed by the second partition 122 inside the second tube section 112 is greater than the height of the second flow channel 1102 formed by the first partition 121 inside the first tube section 111.

[0106] In the above technical solution, while ensuring that the flow channel height of the second flow channel 1102 is greater than that of the third flow channel 1103, the shape and size of the first tube 111 and the second tube 112 are consistent. For example, the first tube 111 and the second tube 112 can be rectangular tubes or circular tubes with the same cross-section, etc. The gas-liquid separation connector 10 is relatively regular in shape, which facilitates the assembly of the first tube 111 and the second tube 112 with other components and improves the overall versatility of the gas-liquid separation connector 10. Moreover, the overall structure of the gas-liquid separation connector 10 is relatively simple, easy to manufacture, and can reduce manufacturing costs.

[0107] In some embodiments of this application, reference is made to Figure 8 The second pipe section 112 includes a first pipe segment 1121 and a second pipe segment 1122 connected together. The first pipe segment 1121 is connected to the first pipe section 111, and the width of the first pipe segment 1121 is greater than the width of the first pipe section 111.

[0108] The cross-sections of the first pipe section 111 and the first pipe segment 1121 can be of the same shape and size, and can be, but are not limited to, rectangular, circular, etc. It is understood that the second pipe section 112 can be a pipe structure with at least a partial width greater than the width of the first pipe section 111. Thus, the second partition 122 being centrally located within the second pipe section 112 can also satisfy the requirement that the flow channel height of the second flow channel 1102 is greater than the flow channel height of the third flow channel 1103.

[0109] The second pipe section 112 includes a first pipe segment 1121 and a second pipe segment 1122 connected together. It can be understood that the second pipe section 112 is a pipe structure with different widths. The width of the first pipe segment 1121 is greater than the width of the second pipe segment 1122. This allows the second pipe segment 1122 to avoid increasing its size to accommodate the larger flow channel height of the third flow channel 1103. This makes the width of the second pipe segment 1122 consistent with that of the first pipe section 111, which is beneficial to make the gas-liquid separation connector 10 have better overall versatility. Moreover, the width of the second pipe segment 1122 is smaller than that of the first pipe segment 1121, which is also beneficial to saving materials.

[0110] In the above technical solution, under the requirement that the flow channel height of the second flow channel 1102 is greater than the flow channel height of the third flow channel 1103, the first pipe section 1121 of the second pipe section 112 can be set to have a width greater than the width of the first pipe section 111. In this way, the internal structure of the gas-liquid separation connector 10 is relatively simple, which can reduce manufacturing difficulty and reduce cost.

[0111] In some embodiments of this application, the width of the second pipe segment 1122 is equal to the width of the first pipe section 111. It is understood that the cross-sectional shape and size of the second pipe segment 1122 and the first pipe section 111 can be the same, thereby enabling better connection to external pipes or components and improving the versatility of the gas-liquid separator 10.

[0112] In some embodiments of this application, reference is made to Figures 4 to 8 In the second direction Y, the size of the second partition 122 is smaller than the size of the second tube 112. It is understood that this structure can save material for the second partition 122, simplify the manufacturing process, and reduce manufacturing costs.

[0113] In some embodiments of this application, reference is made to Figures 4 to 8 The gas-liquid separation connector 10 includes a blocking part 13, which is disposed in the second pipe part 112 and extends along the second direction Y, and the blocking part 13 is located between the second partition part 122 and the third interface 112a.

[0114] The blocking portion 13 can be a plate-like structure or a membrane-like structure, and there can be one or more blocking portions 13. When there are multiple blocking portions 13, the multiple blocking portions 13 are spaced apart along the first direction X. For example, refer to Figure 4 The blocking part 13 is flat and is set in three along the first direction X.

[0115] In the above technical solution, the blocking part 13 can block the separated gas in the second pipe 112, reduce the probability that the gas will be carried back to the first pipe 111 by the coolant, and improve the gas-liquid separation effect of the coolant in the second pipe 112.

[0116] In some embodiments of this application, reference is made to Figures 4 to 8 The first direction X is perpendicular to the second direction Y. In the above technical solution, it can be understood that the first pipe section 111 is perpendicular to the second pipe section 112, and the first partition section 121 is perpendicular to the second partition section 122. This solution facilitates the connection between the first pipe section 111 and the cooling circuit 210, as well as the connection between the second pipe section 112 and the liquid storage container 20.

[0117] Reference Figure 9 This application also provides an expansion tank 100, which includes a liquid storage container 20 and a gas-liquid separation connector 10. The liquid storage container 20 has a liquid outlet 20a. The gas-liquid separation connector 10 is the gas-liquid separation connector 10 of any of the preceding embodiments. The gas-liquid separation connector 10 is connected to the liquid outlet 20a through a third interface 112a.

[0118] The liquid storage container 20 can refer to a container that serves to release air and replenish liquid, and can be, but is not limited to, a jug structure, a box structure, etc. For example, the liquid storage container 20 can be a liquid storage jug or a liquid storage tank. The liquid storage container 20 can be, but is not limited to, square, cylindrical, spherical, etc. The liquid storage container 20 can be partially provided with a transparent viewing window or can be made entirely of transparent material. The liquid storage container 20 can also be made of, but is not limited to, metallic or non-metallic materials. For example, metallic materials can be, but are not limited to, stainless steel, iron, or aluminum, and non-metallic materials can be, but are not limited to, plastic, etc.

[0119] The liquid outlet 20a can refer to the connection port between the liquid storage container 20 and the gas-liquid separation connector 10, and can be used to replenish liquid to the cooling circuit 210 or to exhaust gas.

[0120] In the above technical solution, by adopting the gas-liquid separation connector 10, the connection structure can be simplified while ensuring parallel connection between the liquid storage container 20 and the cooling circuit 210. This can reduce the number of parts and lower the cost. Moreover, the simpler connection structure can improve the connection reliability between the liquid storage container 20 and the cooling circuit 210.

[0121] In some embodiments of this application, reference is made to Figure 9The liquid storage container 20 is provided with a liquid injection port 20b. Coolant can be added to the liquid storage container 20 through the liquid injection port 20b.

[0122] Reference Figure 1 This application also provides a thermal management system 200, including an expansion tank 100 as described in the previous embodiment. In the above technical solution, by using the expansion tank 100, gas-liquid separation in the cooling circuit 210 can be better achieved, reducing the risk of cavitation, improving the stability of system pressure, and also improving heat dissipation efficiency, thereby improving the reliability of the thermal management system 200.

[0123] Reference Figure 2 This application also provides a vehicle 1000, including a thermal management system 200 as described in the previous embodiments.

[0124] In the above technical solution, since the thermal management system 200 has high reliability, the use of the thermal management system 200 can improve the thermal management reliability of the vehicle 1000.

[0125] The following describes a specific embodiment of the gas-liquid separation connector 10 of this application with reference to the accompanying drawings.

[0126] Example 1

[0127] Reference Figure 4 and Figure 5 This application provides a gas-liquid separation connector 10, which includes a pipe 11, a separator 12 and a blocking part 13.

[0128] The pipe fitting 11 includes a first pipe section 111 and a second pipe section 112. The first pipe section 111 is a circular pipe and extends along a first direction X. A first interface 111a and a second interface 111b are formed at both ends of the first pipe section 111 along the first direction X. The second pipe section 112 is a circular pipe and extends along a second direction Y, connecting to the first pipe section 111. A third interface 112a is formed at the end of the second pipe section 112 away from the first pipe section 111. The first direction X is perpendicular to the second direction Y.

[0129] The separator 12 includes a first separator 121 and a second separator 122. Both the first separator 121 and the second separator 122 are flat plates. The first separator 121 is disposed in the first tube 111 and extends along the first direction X. The second separator 122 is disposed in the second tube 112 and extends along the second direction Y. The second separator 122 is connected to the first separator 121.

[0130] The first partition 121 has a plurality of first protrusions 1231 on the side near the second tube 112. The plurality of first protrusions 1231 are spaced apart along a first direction X and extend along a third direction Z, which is perpendicular to the first direction X. The second partition 122 has a plurality of second protrusions 1241 on at least one side near the first partition 121. The plurality of second protrusions 1241 are spaced apart along a second direction Y and extend along a third direction Z.

[0131] The blocking part 13 is a flat plate, which is provided inside the second tube part 112 and extends along the second direction Y, and the blocking part 13 is located between the second partition part 122 and the third interface 112a.

[0132] Example 2

[0133] Reference Figure 7 The structure of the gas-liquid separation connector 10 in Embodiment 2 is largely the same as that in Embodiment 1, except that the width of the first pipe section 111 is equal to the width of the second pipe section 112, passes through the center of the second pipe section 112 and is parallel to the center plane 14 in the second direction Y, and the second partition section 122 is located on the side of the center plane 14 away from the inlet.

[0134] Example 3

[0135] Reference Figure 8 The structure of the gas-liquid separator 10 in Embodiment 3 is largely the same as that in Embodiment 1, except that the second pipe section 112 includes a first pipe segment 1121 and a second pipe segment 1122 connected together. The first pipe segment 1121 connects to the first pipe section 111, and the width of the first pipe segment 1121 is greater than the width of the first pipe section 111. The width of the second pipe segment 1122 is equal to the width of the first pipe section 111. The second partition 122 is centrally arranged within the second pipe section 112.

[0136] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The above are merely preferred embodiments of this application and are not intended to limit the application. For those skilled in the art, unless otherwise specified, all implementation methods and optional implementation methods of this application can be combined to form new technical solutions. Unless otherwise specified, all technical features and optional technical features of this application can be combined to form new technical solutions. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A gas-liquid separation connector, characterized in that, include: The pipe fitting includes a first pipe section and a second pipe section. The first pipe section extends along a first direction and has a first interface and a second interface formed at both ends of the first direction, respectively. The second pipe section extends along a second direction and connects to the first pipe section. A third interface is formed at the end of the second pipe section away from the first pipe section. The separator includes a first separator and a second separator. The first separator is disposed inside the first tube and extends along the first direction, and the second separator is disposed inside the second tube and extends along the second direction. The second separator is connected to the first separator.

2. The gas-liquid separation connector according to claim 1, characterized in that, The first partition includes a first part and a second part, the first part being disposed on the side of the second partition near the first interface, and the second part being disposed on the other side of the second partition near the second interface.

3. The gas-liquid separation connector according to claim 2, characterized in that, A through opening is formed between the second tube portion and the first tube portion, the first portion extends toward the first interface and beyond the boundary of the through opening, and the second portion extends toward the second interface and beyond the boundary of the through opening.

4. The gas-liquid separation connector according to any one of claims 1 to 3, characterized in that, The first partition is provided with a first turbulence structure on the side of the second tube, and / or the second partition is provided with a second turbulence structure on at least one side of the first partition.

5. The gas-liquid separation connector according to claim 4, characterized in that, When the first partition is provided with the first turbulence structure, the first turbulence structure includes a plurality of first protrusions, the plurality of first protrusions are spaced apart along the first direction, the first protrusions extend along a third direction, and the third direction is perpendicular to the first direction.

6. The gas-liquid separation connector according to claim 4, characterized in that, When the second partition is provided with the second turbulence structure, the second turbulence structure includes a plurality of second protrusions, the plurality of second protrusions are spaced apart along the second direction, the second protrusions extend along a third direction, and the third direction is perpendicular to the second direction.

7. The gas-liquid separation connector according to claim 1, characterized in that, The first partition divides the interior of the first tube into a first flow channel and a second flow channel, with the second flow channel being closer to the second tube than the first flow channel; one of the first interface and the second interface is configured as an inlet; the second partition divides the interior of the second tube into a third flow channel and a fourth flow channel in the first direction, with the third flow channel being closer to the inlet than the fourth flow channel; wherein the flow channel height of the second flow channel is greater than the flow channel height of the third flow channel.

8. The gas-liquid separation connector according to claim 7, characterized in that, The width of the first tube is equal to the width of the second tube, and a central plane passing through the center of the second tube and parallel to the second direction is formed. The second partition is located on the side of the central plane away from the inlet.

9. The gas-liquid separation connector according to claim 7, characterized in that, The second pipe section includes a first pipe segment and a second pipe segment connected together, the first pipe segment being connected to the first pipe section, and the width of the first pipe segment being greater than the width of the first pipe section.

10. The gas-liquid separation connector according to claim 1, characterized in that, The gas-liquid separation connector includes a blocking part, which is disposed inside the second pipe and extends along the second direction, and the blocking part is located between the second partition and the third interface.

11. An expansion kettle, characterized in that, include: A liquid storage container having a liquid outlet; The gas-liquid separation connector as described in any one of claims 1 to 10, wherein the gas-liquid separation connector is connected to the liquid outlet through the third interface.

12. A thermal management system, characterized in that, Including the expansion kettle as described in claim 11.

13. A vehicle, characterized in that, Includes the thermal management system as described in claim 12.

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