An integrated heating and refrigeration heat exchange apparatus

Abstract

This invention relates to the technical field of integrated heat exchange equipment, and discloses an integrated heating and cooling heat exchange device, including a protective shell assembly. A circular tube assembly support frame is internally disposed within the protective shell assembly. A thick-film heating assembly is disposed between the circular tube assembly support frame and the protective shell assembly. A filter assembly is fixedly installed inside the circular tube assembly support frame. The filter assembly includes a large filter assembly with a flexible deformation tube installed on it. A refrigerant flow channel assembly is fixedly installed inside the filter assembly. This invention integrates the thick-film heating assembly, the multi-layer gradient filter structure, and the refrigerant flow channel, abandoning the traditional design of separate heating and cooling modules. This effectively simplifies the overall vehicle piping layout, reduces the number of pipe joints, significantly reduces the overall space occupied by the equipment and manufacturing costs, and reduces the risk of refrigerant and coolant leakage caused by redundant piping, thereby reducing energy loss during the heat exchange process.

Description

Technical Field

[0001] This invention belongs to the technical field of integrated exchange equipment, and more specifically, relates to an integrated heating and cooling heat exchange device. Background Technology

[0002] In the thermal management system of new energy vehicle batteries, a combination of coolant circulation and heating / cooling structures is typically used to control the temperature, ensuring that the power battery operates stably within a reasonable temperature range. Currently, similar heat exchange equipment generally separates the heating unit and the cooling heat exchange unit, resulting in a dispersed overall structure, cumbersome and complex vehicle piping layout, large installation space requirements, and numerous pipe joints. This not only increases the overall production and assembly costs but also significantly increases the safety risks of coolant and refrigerant leakage. Excessively long pipeline transport paths also lead to severe heat and cold energy loss and low thermal utilization efficiency.

[0003] Meanwhile, during the continuous heating process of the thick-film heating element, the coolant is prone to generating a large number of nucleated microbubbles and aggregated large bubbles, especially under conditions of rapid warm-up during vehicle cold starts and continuous high-load heating, where the amount of bubble generation increases dramatically. Conventional heat exchange equipment lacks targeted structures for bubble breaking, interception, and refinement, resulting in a large number of bubbles that cannot be eliminated in time. These bubbles tend to continuously adhere to the heating wall and the inner wall of the flow channel, forming a closed air film isolation layer. Since the thermal conductivity of air is much lower than that of coolant, the long-term presence of the air film directly hinders heat transfer, reducing the heat exchange contact area and increasing thermal resistance. This prevents the heat generated by the thick-film heating element from being quickly and evenly transferred to the coolant, ultimately leading to problems such as decreased heat exchange efficiency, slow heating rate, and large temperature fluctuations. In addition, the large accumulation of bubbles in the flow channel can also cause poor coolant flow and local flow resistance imbalance, easily leading to fluid turbulence, cavity resonance, and abnormal operating noises. Long-term use can easily result in local dry burning, uneven heating, and accelerated aging and wear of heating components.

[0004] Therefore, in view of this, we will study and improve the existing structure and its shortcomings, and provide an integrated heating and cooling heat exchange device in order to achieve a more practical and valuable purpose. Summary of the Invention

[0005] This invention provides an integrated heating and cooling heat exchange device to overcome the above-mentioned defects in the prior art.

[0006] The purpose and effect of the integrated heating and cooling heat exchange device of the present invention are achieved by the following specific technical means: An integrated heating and cooling heat exchange device includes a protective shell assembly, a circular tube kit support frame that runs through the interior of the protective shell assembly, a thick film heating assembly that is located between the circular tube kit support frame and the protective shell assembly, and a filter assembly that is fixedly installed inside the circular tube kit support frame. The filter assembly includes a large filter assembly, on which a flexible deformation tube is installed, and a refrigerant flow channel assembly is fixedly installed on the inner side of the filter assembly; The refrigerant flow channel assembly contains refrigerant, and the filter assembly contains coolant. The refrigerant flow channel assembly and the filter assembly work together to achieve rapid heat dissipation for the thick film heating assembly.

[0007] In a further technical solution, the protective shell assembly includes a thick film protective shell, which includes a thick film left shell and a thick film right shell. The outer side of the thick film left shell is provided with a potting opening, and a potting inspection port is fixedly connected to the potting opening. A filter assembly is fixedly installed on the inner side of the thick film left shell, and thick film potting silicone is filled between the filter assembly and the thick film protective shell.

[0008] In a further technical solution, an annular space is provided on the inner side of the thick film potting silicone, and a filter assembly is fixedly installed in the annular space. The filter assembly includes an ultrafiltration screen, a medium filter screen is wrapped inside the ultrafiltration screen, and a large filter assembly is fixedly installed inside the medium filter screen.

[0009] In a further technical solution, a thick film heating component is wrapped around the outer side of the ultrafiltration screen, a filter support is provided between the intermediate filter and the ultrafiltration screen, and annular baffles are respectively provided at the middle of both ends of the large filter component. The annular baffles contact the intermediate filter and form a support.

[0010] A further technical solution is that the large filter assembly is provided with a ring array of flexible deformation tubes, both ends of which are flush with the large filter assembly. The two ends of the large filter assembly are connected. A shape memory alloy ring is provided on the outer surface of the middle part of the flexible deformation tube. Several irregular convex blocks are provided on the surface of the large filter assembly.

[0011] A further technical solution is provided in which a cylindrical channel is provided on the inner side of the large filter assembly, and a refrigerant flow channel assembly is fixedly installed in the cylindrical channel. The refrigerant flow channel assembly includes a central circular tube flow channel, which is a hollow cylindrical structure. A spiral circular tube is rotatably installed inside the central circular tube flow channel. Rotary support blades are fixedly installed at both ends of the spiral circular tube, and spiral fins are fixedly connected to the surface of the spiral circular tube.

[0012] In a further technical solution, a round tube assembly support frame is fixedly connected to the outside of the filter assembly. The round tube assembly support frame includes a base mounting frame and a middle sleeve. A coolant inlet and a coolant outlet are fixedly connected to the outside of the middle sleeve. The coolant inlet and the coolant outlet are horizontally arranged. A coolant inlet filter screen is provided inside the coolant inlet.

[0013] In a further technical solution, a refrigerant electronic expansion valve is fixedly connected to the end of the refrigerant flow channel assembly. The refrigerant electronic expansion valve is located on the same side as the coolant inlet. An outlet temperature sensor and an inlet temperature sensor are respectively installed inside the coolant inlet and the coolant outlet.

[0014] A further technical solution involves a three-segment temperature-responsive structure for the shape memory alloy ring. When the coolant temperature is below 30°C, the shape memory alloy ring is in a fully relaxed state, and the flexible deformation tube maintains its maximum flow cross-section. When the coolant temperature is between 30°C and 80°C, the shape memory alloy ring is in a semi-contracted state, and the diameter of the flexible deformation tube adaptively decreases to initially shear and break up bubbles. When the coolant temperature is above 80°C, the shape memory alloy ring is in a fully contracted state, the diameter of the flexible deformation tube is at its minimum, and a jet flow is formed to enhance shearing and bubble breaking and increase flow rate.

[0015] In a further technical solution, the spiral tube achieves adaptive rotation through rotating support blades. When the refrigerant airflow is small, the spiral tube remains stationary, and the refrigerant exchanges heat along the extended path of the spiral fins. When the refrigerant airflow is large, the airflow drives the rotating support blades to rotate the spiral tube, accelerating the refrigerant flow to achieve adaptive fast and slow cooling heat exchange.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an integrated heating and cooling heat exchange device that integrates a thick-film heating component, a multi-layer gradient filter structure, and a refrigerant cooling channel into one unit. It abandons the traditional design of separate heating and cooling modules, effectively simplifying the vehicle's piping layout, reducing the number of pipe joints, and significantly lowering the overall space occupied and manufacturing costs. Simultaneously, it reduces the risk of refrigerant and coolant leaks caused by redundant piping, and reduces energy loss during heat exchange. Combined with a potted silicone sealing structure, the overall sealing performance, insulation performance, and temperature resistance are significantly improved, enabling long-term stable operation under complex vehicle conditions and comprehensively enhancing the overall integration and assembly adaptability of the device.

[0017] This invention discloses an integrated heating and cooling heat exchange device. It employs a three-layer, progressively denser gradient filtration and breakup system comprised of a large filter assembly, a medium filter, and an ultrafiltration screen. Combined with irregularly convex blocks on the surface of the large filter assembly, an annular baffle guiding structure, and gap turbulence design, the coolant undergoes multiple collisions, disturbances, interceptions, and progressive sieving during flow. This achieves a multi-stage treatment effect: large bubble impact and breakup, medium bubble shearing and refinement, and complete elimination of microbubbles. Simultaneously, it incorporates a flexible deformation tube and a three-section temperature-responsive memory alloy ring structure, which adaptively adjusts the pipe diameter according to different coolant temperature ranges. Low-temperature high-flow ensures rapid battery preheating, medium-temperature moderate contraction achieves gentle bubble shearing, and high-temperature compression forms a jet flow to enhance powerful bubble breaking. This fundamentally prevents bubbles from adhering to the wall surface and forming an insulating gas film during heating, effectively improving the contact heat exchange efficiency between the coolant and the thick-film heating assembly, stabilizing water temperature fluctuations, ensuring temperature control balance of the new energy battery, and eliminating problems such as poor heat exchange, localized overheating, and abnormal operating noises.

[0018] This invention discloses an integrated heating and cooling heat exchange device. By incorporating an adaptively rotatable spiral tube, rotating support blades, and spiral fins in the inner refrigerant flow channel assembly, it can automatically switch operating modes according to the cooling airflow. Under low airflow conditions, the spiral fins extend the refrigerant flow path, prolonging the heat exchange time and achieving stable, slow cooling. Under high airflow conditions, the wind power drives the blades to rotate, causing the spiral tube to rotate synchronously, enhancing fluid disturbance and accelerating the refrigerant flow rate, achieving rapid forced cooling and adaptive fast / slow heat exchange adjustment. The overall structure requires no additional electronic control components, relying on fluid wind force and temperature deformation for passive intelligent adjustment. The structure is simple and reliable, with lower energy consumption and sensitive response. It can match the battery heat dissipation and temperature control requirements under different vehicle driving conditions in real time, further improving the adaptability, durability, and overall operational safety of the heat exchange device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention; Figure 2 This is a schematic diagram of the overall side view structure of the present invention; Figure 3 This is a schematic diagram of the overall appearance structure of the circular tube assembly support frame in this invention; Figure 4 These are the overall three views of the circular tube assembly support frame in this invention; Figure 5 This is a schematic diagram of the overall top cross-sectional structure of the present invention; Figure 6 This is a schematic diagram of the overall side cross-sectional structure of the present invention; Figure 7 This is a schematic diagram of the overall exploded structure of the present invention; Figure 8 This is a schematic diagram of the overall exploded front view of the present invention; Figure 9 This is a top-down exploded view of the overall structure of the present invention; Figure 10 This is a schematic diagram of the internal structure of the protective shell assembly and the circular tube kit support frame of the present invention; Figure 11 This is a schematic diagram of the overall front view of the filter assembly of the present invention; Figure 12 For the present invention Figure 11 A magnified structural diagram of point A in the middle.

[0022] Explanation of reference numerals in the attached figures: 1. Protective housing assembly; 11. Thick film protective housing; 111. Thick film left side housing; 112. Thick film right side housing; 113. Thick film heating assembly; 12. Coolant inlet; 13. Coolant outlet; 14. Glue-filled inspection port; 15. Coolant inlet filter; 16. Thick film potting silicone; 17. Inlet temperature sensor; 18. Outlet temperature sensor; 19. Round tube kit support frame; 2. Electronic refrigerant expansion valve; 3. Refrigerant flow channel assembly; 31. Rotary support blades; 32. Central circular tube flow channel; 33. Spiral circular tube; 34. Spiral fins; 4. Filter assembly; 41. Ultrafiltration screen; 42. Medium filter screen; 43. Large filter assembly; 44. Filter support; 45. Flexible deformation tube; 46. Annular baffle plate; 47. Shape memory alloy ring. Detailed Implementation

[0023] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0024] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and 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 of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] As attached Figure 1 To be continued Figure 12 As shown: This invention provides an integrated heating and cooling heat exchange device, including a protective shell assembly 1. A circular tube assembly support frame 19 is internally disposed within the protective shell assembly 1. A thick-film heating assembly 113 is disposed between the circular tube assembly support frame 19 and the protective shell assembly 1. A filter assembly 4 is fixedly installed inside the circular tube assembly support frame 19. The filter assembly 4 includes a large filter assembly 43, on which a flexible deformation tube 45 is installed. A refrigerant flow channel assembly 3 is fixedly installed inside the filter assembly 4. Refrigerant flows through the refrigerant flow channel assembly 3, and coolant flows through the filter assembly 4. The combined action of the refrigerant flow channel assembly 3 and the filter assembly 4 enables rapid heat dissipation from the thick-film heating assembly 113, effectively reducing the risk of overheating during continuous operation, improving the stability and service life of the heating assembly, and simultaneously ensuring more uniform heating of the coolant, avoiding problems such as coolant deterioration, excessive bubble formation, and decreased heat exchange efficiency caused by localized high temperatures.

[0027] Preferred options are shown in the appendix. Figure 1 To be continued Figure 7The protective shell assembly 1 includes a thick-film protective shell 11, which includes a thick-film left shell 111 and a thick-film right shell 112. The outer side of the thick-film left shell 111 is provided with a potting opening, and a potting inspection port 14 is fixedly connected to the potting opening. A filter assembly 4 is fixedly installed on the inner side of the thick-film left shell 111. Thick-film potting silicone 16 is filled between the filter assembly 4 and the thick-film protective shell 11. The potting silicone can effectively reduce heat loss during the operation of the thick-film heating assembly, improve the heat energy utilization rate, and at the same time achieve full-enclosed sealing protection of the internal structure, achieving a waterproof and dustproof level, preventing water vapor and impurities from entering the internal flow channel and causing corrosion, blockage or short circuit. The potting inspection port can facilitate later maintenance, wire harness inspection and sealant filling, improving the convenience of product assembly and after-sales maintenance.

[0028] Preferred options are shown in the appendix. Figure 1 To be continued Figure 7 The thick-film potting silicone 16 has an annular space on its inner side, and a filter assembly 4 is fixedly installed in the annular space. The filter assembly 4 includes an ultrafiltration mesh 41, a medium filter mesh 42 wrapped inside the ultrafiltration mesh 41, and a large filter assembly 43 fixedly installed inside the medium filter mesh 42. The three layers of filter mesh are arranged in a progressively denser manner from the inside to the outside, forming a gradient filtration and breaking structure. This structure can intercept, tear, and refine bubbles of different sizes in the coolant, gradually eliminating the obstruction effect of bubbles on heat exchange, allowing the coolant to fully contact the heating wall, and greatly improving the overall heat exchange efficiency. At the same time, it can filter impurities, debris, and crystals in the coolant, avoiding flow channel blockage and local wear, and ensuring long-term smooth and stable flow channels.

[0029] Preferred options are shown in the appendix. Figure 1 To be continued Figure 7 The ultrafiltration screen 41 is wrapped with a thick film heating assembly 113. A filter support 44 is provided between the intermediate filter screen 42 and the ultrafiltration screen 41. Annular baffles 46 are respectively provided at the middle of both ends of the large filter assembly 43. The annular baffles 46 contact the intermediate filter screen 42 and form a support. The filter support improves the overall structural strength and impact resistance of the three-layer filter screen, preventing deformation, displacement or damage under high-speed flow and pressure fluctuation of the coolant. The annular baffles can effectively guide the coolant to flow along a set path, forcing the coolant to pass through the large filter assembly, intermediate filter screen and ultrafiltration screen in sequence, preventing fluid short circuits, ensuring that all coolant can complete the bubble breaking and impurity filtration process, and improving the reliability of the equipment.

[0030] Preferred options are shown in the appendix. Figure 7 and appendix Figure 12The large filter assembly 43 is provided with a ring array of flexible deformation tubes 45. Both ends of the flexible deformation tubes 45 are flush with the large filter assembly 43, and the two ends of the large filter assembly 43 are connected. A shape memory alloy ring 47 is provided on the outer surface of the middle part of the flexible deformation tubes 45. The surface of the large filter assembly 43 is provided with several irregular convex blocks. The irregular convex blocks can increase the collision probability between the coolant and the wall, impact, tear and disperse larger bubbles, reduce the possibility of bubble aggregation and gas film formation. The flexible deformation tubes and shape memory alloy rings realize temperature adaptive deformation adjustment, change the flow cross-sectional area according to the real-time temperature of the coolant, realize differentiated bubble breaking and flow control under different operating conditions, suppress bubble generation and expansion from the source, and significantly reduce boiling vibration and abnormal noise.

[0031] Preferred options are shown in the appendix. Figure 7 To be continued Figure 12 The large filter assembly 43 has a cylindrical channel inside, and a refrigerant flow channel assembly 3 is fixedly installed inside the cylindrical channel. The refrigerant flow channel assembly 3 includes a central circular tube flow channel 32, which is a hollow cylindrical structure. A spiral circular tube 33 is rotatably installed inside the central circular tube flow channel 32. Rotating support blades 31 are fixedly installed at both ends of the spiral circular tube 33. Spiral fins 34 are fixedly connected to the surface of the spiral circular tube 33. The spiral fins can effectively extend the refrigerant flow path, increase the heat exchange area between the refrigerant and the tube wall, and improve the cooling efficiency. The rotating support blades and the spiral circular tube form an adaptive rotation structure, which can automatically adjust the flow state according to the refrigerant air volume. Small air volume prolongs the heat exchange time, and large air volume increases the cooling speed, realizing adaptive matching of cooling intensity and making the coolant temperature control more precise and stable.

[0032] Preferred options are shown in the appendix. Figure 1 To be continued Figure 7 The filter assembly 4 is fixedly connected to a round tube kit support frame 19 on its outer side. The round tube kit support frame 19 includes a base mounting frame and a middle sleeve. The outer side of the middle sleeve is fixedly connected to a coolant inlet 12 and a coolant outlet 13. The coolant inlet 12 and the coolant outlet 13 are horizontally arranged. The coolant inlet 12 is equipped with a coolant inlet filter 15. The coolant inlet filter can perform primary filtration of the coolant entering the equipment, intercept larger particulate impurities, protect the internal filter, flow channel and heating components from being scratched, blocked or worn, and extend the overall service life. The horizontally arranged inlet and outlet facilitate vehicle assembly and pipeline connection, reduce flow resistance and improve the smoothness of coolant circulation.

[0033] Preferred options are shown in the appendix. Figure 1 To be continued Figure 7The end of the refrigerant flow channel assembly 3 is fixedly connected to a refrigerant electronic expansion valve 2, which is located on the same side as the coolant inlet 12. The coolant inlet 12 and the coolant outlet 13 are respectively equipped with an outlet temperature sensor 18 and an inlet temperature sensor 17. The inlet temperature sensor and the outlet temperature sensor monitor the inlet and outlet temperatures of the coolant in real time, forming a temperature difference feedback. Together with the refrigerant electronic expansion valve, the refrigerant supply is precisely adjusted to achieve intelligent matching of heating and cooling intensity, ensuring that the battery is always in the optimal operating temperature range, thereby improving battery range, lifespan and safety.

[0034] Preferably, the shape memory alloy ring 47 has a three-stage temperature response structure. When the coolant temperature is below 30°C, the shape memory alloy ring 47 is fully relaxed, and the flexible deformation tube 45 maintains the maximum flow cross-section. When the coolant temperature is between 30°C and 80°C, the shape memory alloy ring 47 is partially contracted, and the diameter of the flexible deformation tube 45 adaptively decreases to initially shear and break up bubbles. When the coolant temperature is above 80°C, the shape memory alloy ring 47 is fully contracted, the diameter of the flexible deformation tube 45 is minimized, and a jet flow is formed to enhance shearing and bubble breaking and increase flow rate. The three-stage adaptive adjustment can meet the needs of different operating conditions such as cold start, normal operation, and high-load heating of vehicles. Low temperature ensures rapid heating with large flow rate, medium temperature ensures mild bubble breaking without affecting flow rate, and high temperature powerfully breaks up bubbles and suppresses boiling, comprehensively improving heat exchange stability and temperature control accuracy.

[0035] Preferably, the spiral tube 33 achieves adaptive rotation through the rotating support blades 31. When the refrigerant airflow is small, the spiral tube 33 remains stationary, and the refrigerant extends its path along the spiral fins 34 for heat exchange. When the refrigerant airflow is large, the airflow drives the rotating support blades 31 to rotate the spiral tube 33, accelerating the refrigerant flow to achieve adaptive fast and slow cooling heat exchange. The cooling intensity can be automatically switched according to the cooling load without additional electronic control drive. The structure is simple, the response is fast, and the operation is stable and reliable. It can quickly suppress coolant temperature fluctuations, avoid battery overcooling or overheating, and improve the overall energy efficiency of the thermal management system.

[0036] Specific usage of this invention: When using this device, firstly, the entire device should be stably assembled at the corresponding installation position of the new energy vehicle battery thermal management system. The coolant inlet and outlet pipes of the external vehicle-mounted water cooling circulation equipment should be sealed and connected to the coolant inlet 12 and coolant outlet 13 of this device, respectively, to ensure that the coolant circulation channel is sealed and leak-free. At the same time, the refrigerant electronic expansion valve 2 of this device should be connected to the corresponding pipe of the vehicle-mounted air conditioning refrigeration system, so that the refrigerant circuit and the battery thermal management circuit form a complete and matched integrated heat exchange system, realizing the integrated and coordinated operation of heating and cooling functions.

[0037] Traditional new energy vehicle batteries typically employ a separate water heater to heat the coolant, while battery cooling is achieved through a separate refrigeration unit that exchanges heat with refrigerant in the air conditioning circuit. This traditional structure, with its separate water heater and refrigeration heat exchanger, not only results in a large number of components, complex assembly processes, and high production costs, but also occupies significant installation space. The cumbersome and lengthy piping layout significantly increases the risk of leaks at pipe joints. Excessive piping and joints also increase energy loss during heat exchange, making it difficult to guarantee heat exchange efficiency. Furthermore, the coolant is prone to nucleated boiling bubbles during heating. These bubbles adhere to the heating wall, forming an insulating film that directly reduces heat exchange efficiency, leading to localized overheating, uneven temperature distribution, vibration, and abnormal noise, severely impacting battery temperature control stability and lifespan.

[0038] This device adopts an integrated, one-piece structural design, which fundamentally solves the defects of traditional equipment. When the coolant enters the equipment from the coolant inlet 12, it first undergoes primary filtration through the coolant inlet filter 15, intercepting larger particles, debris, rust, and other impurities in the coolant in advance. This prevents impurities from entering the internal flow channels and causing problems such as filter clogging, wall scratches, and flow channel blockage, ensuring the long-term stable operation of the subsequent heat exchange and defoaming structures. The coolant, after primary filtration, continues to flow forward. When it reaches the end of the filter assembly 4, it is blocked and limited by the annular baffle 46, preventing it from flowing directly through axially. Instead, it is forced to change its flow direction radially and enter the flexible deformation tube 45 set on the large filter assembly 43. The coolant is stably guided and transported inside the flexible deformation tube 45 and continuously discharged outward. During the discharge process, it fully contacts the surrounding structure, accelerating heat transfer and heat exchange, making the coolant more uniformly and efficiently heated or cooled.

[0039] As the coolant flows outward through the flexible deformable tube 45, a reasonable small gap remains between the large filter assembly 43 and the central circular tube channel 32 of the inner refrigerant flow channel assembly 3. This gap is not a completely sealed structure, allowing a small amount of coolant to smoothly enter the enclosed area between the two sets of annular baffles 46. This creates a brief buffer and sufficient disturbance for the coolant in this area, increasing the probability of contact between the liquid and the wall. At this time, the coolant continuously impacts, scours, and shears the wall of the large filter assembly 43, causing the initially generated large-volume bubbles in the coolant to break up, transforming large bubbles into small bubbles and reducing their aggregation and adhesion. The coolant, after its initial breakup, continues to flow outward into the flow channel area between the middle filter screen 42 and the large filter assembly 43, where it undergoes a secondary bubble breakup process, further reducing the bubble volume.

[0040] Meanwhile, several irregular convex blocks on the surface of the large filter assembly 43 continuously disturb, collide with, and cut the flowing coolant, further impacting, tearing, and dispersing large bubbles and clusters of bubbles that have not yet been completely broken, making the bubbles even smaller and completely destroying the conditions for bubble aggregation to form a gas film. After being broken down in multiple stages, the coolant carries the tiny bubbles and continues to flow outward, passing through the middle filter 42 and entering the internal flow channel of the ultrafiltration screen 41. Under the action of the fine mesh of the ultrafiltration screen 41, the bubbles are further refined, divided, and eliminated, ultimately making the coolant almost free of large bubbles that affect heat exchange. The coolant can fully contact and exchange heat with the outer thick film heating assembly 113 in a gas film-free, unobstructed, and highly thermally conductive state, greatly improving heat exchange efficiency and temperature control uniformity, and ensuring the stable and reliable operation of the battery thermal management system.

[0041] In this device, the shape memory alloy ring 47 on the outer side of the flexible deformation tube 45 adopts a three-segment temperature adaptive response structure. It can automatically change its deformation state according to the real-time temperature change of the coolant, thereby adjusting the flow cross-section of the flexible deformation tube 45 and realizing differentiated defoaming and flow control under different operating conditions. When the coolant temperature is in the low-temperature range below 30°C, the shape memory alloy ring 47 is in a completely relaxed state and does not exert a squeezing effect on the flexible deformation tube 45. This allows the flexible deformation tube 45 to maintain the maximum flow cross-section, maximizing the coolant flow area, minimizing flow resistance, and maximizing the flow rate. This can meet the high-flow heating demand required for rapid battery warm-up during the cold start phase of the vehicle, avoiding problems such as slow heating and reduced range due to insufficient flow.

[0042] When the coolant temperature is in the medium temperature range of 30℃ to 80℃, the shape memory alloy ring 47 is triggered by heat to undergo a phase change and enter a semi-contracted state. This generates a moderate extrusion force on the outer wall of the flexible deformation tube 45, causing the diameter of the flexible deformation tube 45 to shrink adaptively and uniformly. Without affecting the normal flow of coolant or causing flow blockage, it forms a preliminary shearing, extrusion and breaking effect on the coolant and bubbles flowing in the tube, inhibiting further growth and aggregation of bubbles, eliminating potential vibration and noise and heat exchange attenuation risks in advance, and achieving a mild and stable bubble breaking effect.

[0043] When the coolant temperature rises to above 80°C, the shape memory alloy ring 47 reaches a complete phase change state and is at its maximum contraction, exerting strong pressure on the flexible deformation tube 45. This causes the diameter of the flexible deformation tube 45 to shrink drastically to its minimum value, forcibly compressing the coolant within the tube and creating a high-speed jet flow. This high-speed jet flow possesses extremely strong shearing and scouring forces, which can powerfully shear and break up air bubbles in the coolant. Simultaneously, the high-speed fluid strongly scavenges the wall surface, effectively preventing air bubble adhesion, scale crystallization, and impurity deposition. This significantly increases the fluid velocity and simultaneously enhances the heat transfer intensity, completely resolving issues such as decreased heat transfer efficiency, large water temperature fluctuations, and battery temperature control imbalance caused by the large-scale generation of air bubbles during the high-temperature heating stage. This ensures that the coolant temperature remains stable within the battery's optimal operating temperature range.

[0044] When the equipment operating temperature is too high and forced cooling of the coolant is required, the vehicle battery thermal management control system automatically activates the cooling mode. The refrigerant electronic expansion valve 2 opens upon receiving a signal, allowing the low-temperature, low-pressure refrigerant to enter the refrigerant flow channel assembly 3 via the refrigerant electronic expansion valve 2, initiating cooling and heat exchange for the inner coolant. When the refrigerant airflow is low, the airflow is insufficient to drive the rotating support blades 31 to rotate, and the spiral tube 33 remains stationary. The refrigerant flows slowly along the spiral fins 34 in a spiral path, effectively extending the residence time of the refrigerant in the flow channel, increasing the heat exchange area and duration, and making the cooling and heat exchange more thorough. This achieves gentle and stable slow cooling, suitable for low-load heat dissipation scenarios.

[0045] When the battery generates a large amount of heat and the cooling demand increases, the refrigerant airflow increases accordingly. The airflow is sufficient to drive the rotating support blades 31 to rotate around the axis, thereby causing the spiral tube 33 to rotate synchronously. During the rotation of the spiral tube 33, it generates forced disturbance and propulsion on the refrigerant, breaking the laminar flow state and forming violent turbulence. This significantly accelerates the refrigerant flow speed and heat exchange efficiency, achieving rapid and powerful cooling, suitable for rapid cooling needs in high-load, high-heat-generating scenarios. By adaptively adjusting the rotation state of the spiral tube 33 according to the airflow, the cooling intensity and heat exchange rate can be automatically switched, keeping the coolant temperature stable at all times. Precise adaptive heat exchange can be achieved without complex electronic control adjustments, comprehensively improving the integration, stability, heat exchange efficiency, and service life of the new energy vehicle battery thermal management system.

[0046] This invention provides an integrated heating and cooling heat exchange device that integrates a thick-film heating component 113, a multi-layer gradient filter structure, and a refrigerant cooling channel into one unit. It abandons the traditional design of separate heating and cooling modules, effectively simplifying the vehicle's piping layout, reducing the number of pipe joints, and significantly lowering the overall space occupied and manufacturing costs. Simultaneously, it reduces the risk of refrigerant and coolant leakage due to redundant piping, and lowers energy loss during heat exchange. Combined with a thick-film potted silicone 16 sealing and protective structure, the overall sealing performance, insulation performance, and temperature resistance are significantly improved, enabling long-term stable operation under complex vehicle conditions and comprehensively enhancing the overall integration and assembly adaptability of the device.

[0047] This invention provides an integrated heating and cooling heat exchange device that utilizes a three-layer, progressively denser gradient filtration and breakup system formed by a large filter assembly 43, a medium filter 42, and an ultrafiltration screen 41. Combined with the irregular convex blocks on the surface of the large filter assembly 43, the flow-guiding structure of the annular baffle plate 46, and the gap turbulence design, the coolant undergoes multiple collisions, disturbances, interceptions, and progressive sieving during its flow, achieving a multi-stage treatment effect of large bubble impact breakup, medium bubble shearing refinement, and complete elimination of microbubbles. Simultaneously, the device incorporates a flexible deformation tube 45 and a three-section temperature-responsive memory alloy ring 47 structure, which can adaptively adjust the pipe diameter according to different coolant temperature ranges. Low-temperature high-flow ensures rapid battery preheating, medium-temperature moderate contraction achieves gentle bubble shearing, and high-temperature compression forms a jet flow to enhance powerful bubble breaking. This fundamentally prevents bubbles from adhering to the wall surface and forming a heat-insulating film during heating, effectively improving the contact heat exchange efficiency between the coolant and the thick-film heating assembly 113, stabilizing water temperature fluctuations, ensuring temperature control balance of the new energy battery, and eliminating problems such as poor heat exchange, localized overheating, and abnormal operating noises.

[0048] This invention discloses an integrated heating and cooling heat exchange device. By incorporating an adaptively rotatable spiral tube 33, rotating support blades 31, and spiral fins 34 within the inner refrigerant flow channel assembly 3, the device can automatically switch operating modes based on the cooling airflow. Under low airflow conditions, the spiral fins 34 extend the refrigerant flow path, prolonging the heat exchange time and achieving stable, slow cooling. Under high airflow conditions, the wind power drives the rotating support blades 31 to rotate, causing the spiral tube 33 to rotate synchronously, enhancing fluid turbulence and accelerating the refrigerant flow rate, achieving rapid forced cooling and adaptive fast / slow heat exchange adjustment. The overall structure requires no additional electronic control components, relying on fluid wind force and temperature deformation for passive intelligent adjustment. It features a simple and reliable structure, lower energy consumption, and sensitive response, and can match the battery heat dissipation and temperature control requirements under different vehicle driving conditions in real time, further improving the adaptability, durability, and overall operational safety of the heat exchange device.

[0049] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An integrated heating and cooling heat exchange device, comprising a protective shell assembly (1), wherein a circular tube support frame (19) is provided through the interior of the protective shell assembly (1), characterized in that: A thick film heating assembly (113) is provided between the round tube kit support frame (19) and the protective shell assembly (1), and a filter assembly (4) is fixedly installed inside the round tube kit support frame (19). The filter assembly (4) includes a large filter assembly (43), on which a flexible deformation tube (45) is installed, and a refrigerant flow channel assembly (3) is fixedly installed inside the filter assembly (4). The refrigerant flow channel assembly (3) contains refrigerant, and the filter assembly (4) contains coolant. The refrigerant flow channel assembly (3) and the filter assembly (4) work together to achieve rapid heat dissipation for the thick film heating assembly (113).

2. The integrated heating and cooling heat exchange device according to claim 1, characterized in that: The protective shell assembly (1) includes a thick film protective shell (11), which includes a thick film left shell (111) and a thick film right shell (112). The thick film left shell (111) has a glue-filling opening on its outer side, and a glue-filling inspection port (14) is fixedly connected to the glue-filling opening. A filter assembly (4) is fixedly installed on the inner side of the thick film left shell (111), and thick film potting silicone (16) is filled between the filter assembly (4) and the thick film protective shell (11).

3. The integrated heating and cooling heat exchange device according to claim 2, characterized in that: The thick film potting silicone (16) has an annular space on its inner side, and a filter assembly (4) is fixedly installed in the annular space. The filter assembly (4) includes an ultrafiltration mesh (41), a medium filter mesh (42) is wrapped inside the ultrafiltration mesh (41), and a large filter assembly (43) is fixedly installed inside the medium filter mesh (42).

4. The integrated heating and cooling heat exchange device according to claim 3, characterized in that: A thick film heating assembly (113) is wrapped around the outer side of the ultrafiltration mesh (41). A filter support (44) is provided between the medium filter mesh (42) and the ultrafiltration mesh (41). Annular baffles (46) are provided at the middle of both ends of the large filter assembly (43). The annular baffles (46) contact the medium filter mesh (42) and form a support.

5. The integrated heating and cooling heat exchange device according to claim 4, characterized in that: The large filter assembly (43) is provided with a ring array of flexible deformation tubes (45), both ends of which are flush with the large filter assembly (43). The two ends of the large filter assembly (43) are connected. The outer surface of the middle part of the flexible deformation tube (45) is provided with a shape memory alloy ring (47). The surface of the large filter assembly (43) is provided with several irregular convex blocks.

6. The integrated heating and cooling heat exchange device according to claim 5, characterized in that: The large filter assembly (43) has a cylindrical channel inside, and a refrigerant flow channel assembly (3) is fixedly installed inside the cylindrical channel. The refrigerant flow channel assembly (3) includes a central circular tube flow channel (32), which is a cylindrical hollow structure. A spiral circular tube (33) is rotatably installed inside the central circular tube flow channel (32). Rotary support blades (31) are fixedly installed at both ends of the spiral circular tube (33), and spiral fins (34) are fixedly connected to the surface of the spiral circular tube (33).

7. The integrated heating and cooling heat exchange device according to claim 6, characterized in that: The filter assembly (4) is fixedly connected to a round tube kit support frame (19) on the outside. The round tube kit support frame (19) includes a base mounting frame and a middle sleeve. The outer side of the middle sleeve is fixedly connected to a coolant inlet (12) and a coolant outlet (13). The coolant inlet (12) and the coolant outlet (13) are set horizontally. The coolant inlet (12) is provided with a coolant inlet filter screen (15).

8. The integrated heating and cooling heat exchange device according to claim 7, characterized in that: The end of the refrigerant flow channel assembly (3) is fixedly connected to a refrigerant electronic expansion valve (2), which is located on the same side as the coolant inlet (12). The coolant inlet (12) and the coolant outlet (13) are respectively provided with an outlet temperature sensor (18) and an inlet temperature sensor (17).

9. The integrated heating and cooling heat exchange device according to claim 8, characterized in that: The shape memory alloy ring (47) has a three-stage temperature response structure. When the coolant temperature is below 30°C, the shape memory alloy ring (47) is in a fully relaxed state, and the flexible deformation tube (45) maintains the maximum flow cross section. When the coolant temperature is between 30°C and 80°C, the shape memory alloy ring (47) is in a semi-contracted state, and the diameter of the flexible deformation tube (45) adaptively shrinks to initially shear and break bubbles. When the coolant temperature is above 80°C, the shape memory alloy ring (47) is in a fully contracted state, the diameter of the flexible deformation tube (45) is at its minimum, and a jet flow is formed to enhance shearing and bubble breaking and increase flow rate.

10. The integrated heating and cooling heat exchange device according to claim 9, characterized in that: The spiral tube (33) achieves adaptive rotation through the rotating support blade (31). When the refrigerant air volume is small, the spiral tube (33) is stationary, and the refrigerant extends its path along the spiral fins (34) for heat exchange. When the refrigerant air volume is large, the wind force drives the rotating support blade (31) to rotate the spiral tube (33), accelerating the refrigerant flow to achieve adaptive fast and slow cooling heat exchange.

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