An inlet and outlet water assembly capable of bypass switching and flow regulation and a battery pack

Abstract

The utility model discloses a kind of inlet and outlet assembly and battery pack that can bypass switching and flow regulation, comprising: main body component;Side component, including left component and right component, left component and main body component are enclosed and form left cavity, right component and main body component are enclosed and form right cavity;Main pipeline, including left main pipeline, right main pipeline, it is parallel arrangement;Bypass pipeline, including left bypass pipeline, middle bypass pipeline and right bypass pipeline, middle bypass pipeline two ends are communicated with left bypass pipeline, right bypass pipeline respectively, and bypass loop is formed;Spherical valve body is located at the junction of bypass pipeline and main pipeline, spherical valve body is connected with driving device by connecting rod, driving device drives spherical valve body to rotate, to switch the on-off state of main pipeline, adjust the flow cross-sectional area of main pipeline, or switch to bypass pipeline conduction state.The utility model significantly reduces the influence of temperature difference caused by uneven flow distribution on cell, improves battery use safety.

Description

Technical Field

[0001] This utility model relates to an inlet / outlet assembly and battery pack capable of bypass switching and flow regulation, belonging to the field of new energy vehicle batteries. Background Technology

[0002] In new energy vehicle battery systems, the integrated inlet / outlet assembly is a key component connecting the internal liquid cooling pipelines of the battery pack to the external thermal management unit, and its performance directly affects the operating efficiency and service life of the battery system. Existing integrated inlet / outlet assemblies have several technical shortcomings that make them difficult to meet practical application requirements: Firstly, the existing integrated inlet and outlet assemblies only provide mechanical connections between pipes. After a vehicle has been parked for an extended period in high or low temperature environments, the temperature of the circulating coolant approaches ambient temperature, while the battery pack, due to its insulation properties, creates a temperature difference with the coolant. When the thermal management system is activated at this time, the coolant cannot cool down quickly at high temperatures and instead heats the battery pack; at low temperatures, the coolant further lowers the battery pack temperature. This not only violates temperature control targets but may also trigger safety hazards such as lithium dendrite short circuits, affecting battery life and safety.

[0003] Secondly, the system lacks flow regulation capabilities, resulting in significant temperature differences across multiple battery packs. When multiple battery packs form a system, variations in pipeline distance lead to different resistance levels. Combined with pressure drop differences between different battery pack models, this causes flow deviations among the battery packs. The existing integrated inlet and outlet assembly cannot regulate flow, resulting in large temperature differences among the battery packs, inconsistent lifespan degradation, and ultimately premature failure of the battery system.

[0004] In summary, existing technologies have significant shortcomings in terms of adaptability to extreme environments and flow regulation, and there is an urgent need for an inlet / outlet assembly with bypass switching and flow regulation capabilities. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides an inlet / outlet assembly and battery pack capable of bypass switching and flow regulation.

[0006] To achieve the above objectives, this utility model employs an inlet / outlet assembly capable of bypass switching and flow regulation, comprising: The main component has a central cavity that penetrates through it. The side members include a left member and a right member installed on both sides of the main member. The left member and the main member enclose a left cavity, and the right member and the main member enclose a right cavity, and the left cavity, the middle cavity, and the right cavity are connected in sequence. The main pipeline, used to connect the internal and external pipelines of the battery pack to transport coolant, includes a left main pipeline passing through the left cavity and a right main pipeline passing through the right cavity, with the left and right main pipelines arranged in parallel. A bypass pipeline, arranged parallel to the main pipeline, is used to allow coolant to bypass the battery pack and flow directly back; the bypass pipeline includes a left bypass pipeline, a middle bypass pipeline and a right bypass pipeline, the left bypass pipeline is connected to both ends of the left main pipeline, the right bypass pipeline is connected to both ends of the right main pipeline, the middle bypass pipeline is installed in the middle cavity, and its two ends are connected to the left bypass pipeline and the right bypass pipeline respectively, forming a bypass loop; A spherical valve body is rotatably installed in the left and right cavities and located at the junction of the bypass pipeline and the main pipeline. The spherical valve body is connected to the driving device through a connecting rod. The driving device drives the spherical valve body to rotate to switch the on / off state of the main pipeline, adjust the flow cross-sectional area of ​​the main pipeline, or switch to the bypass pipeline conduction state.

[0007] As an improvement, the left and right components are respectively connected to the main component by bolts.

[0008] As an improvement, the spherical valve body has a through hole. When the spherical valve body is rotated to the first position, the axis of the through hole coincides with the axis of the main pipeline, and the main pipeline is fully open. When rotated to the second position, the axis of the through hole coincides with the axis of the bypass pipeline, the bypass pipeline is open, and the main pipeline is closed. When rotated to the third position, the axis of the through hole and the axis of the main pipeline are at a preset angle, and the flow cross-sectional area of ​​the main pipeline is adjusted according to the angle.

[0009] As an improvement, the two ball valve bodies installed in the left and right cavities are respectively connected to the corresponding drive devices through independent connecting rods, so as to realize the independent control of the two main circuits.

[0010] As an improvement, a sealing assembly is also included, which comprises silicone foam; the silicone foam is disposed on the mating surface of the inlet / outlet assembly and the battery pack tray and is locked in place by fastening bolts.

[0011] As an improvement, the sealing assembly includes a sealing ring disposed on the connection surface between the main component and the left and right components.

[0012] As an improvement, the connection surfaces of the left component, the right component and the main component are also provided with positioning structures; the positioning structures include positioning pins provided on the sides of the left component and the right component, and positioning pin holes provided on the corresponding sides of the main component, the positioning pins and positioning pin holes cooperate to realize the positioning and assembly of each component.

[0013] In a second aspect, this utility model also provides a battery pack, wherein the battery tray of the battery pack is equipped with the aforementioned inlet / outlet assembly capable of bypass switching and flow regulation.

[0014] As an improvement, the left main pipeline and the right main pipeline of the inlet and outlet assembly are both provided with inner ends and outer ends; The inner ends of the left and right main pipes are respectively sealed to the inner male connector, and one end of the inner male connector is connected to the corresponding liquid cooling pipeline inside the battery pack; the outer ends of the left and right main pipes are respectively sealed to the outer male connector, and one end of the outer male connector is connected to the corresponding pipeline of the external thermal management unit.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model utilizes the interconnected cavity formed by the main component and left / right components to integrate a structure in which left / middle / right bypass pipes run parallel to the main pipe within the assembly. When the vehicle is parked for an extended period in high summer temperatures or low winter temperatures, the drive device can rotate the ball valve body to close the left / right main pipes and open the bypass circuit, guiding the coolant to bypass the battery pack and flow directly back to the thermal management unit. This design effectively solves the problem in existing technologies where the coolant outside the battery pack approaches ambient temperature, and initial introduction causes the battery pack temperature to rise / fall away from the temperature control target. It also avoids charging and discharging lithium batteries at extreme temperatures, significantly reducing the impact of adverse chemical reactions on the cell cycle life and improving battery safety.

[0016] 2. This utility model features a rotatable spherical valve body installed at the junction of the bypass pipe and the main pipe in the left / right cavity. By adjusting the angle between the valve body's through-hole and the main pipe using a drive device, the flow cross-sectional area of ​​the left / right main pipe can be precisely controlled. This structure can compensate for the different liquid cooling pipe resistances caused by the spatial differences of each battery pack in a multi-battery pack system, and also adapt to the flow deviations caused by the pressure drop differences of different battery pack models. It effectively balances the inlet and outlet water flow of each battery pack, reduces the temperature difference between battery packs within the system, and extends the overall cycle life.

[0017] 3. This utility model, through the sealing effect of the spherical valve body, can cut off the connection between the left / right main pipelines and the outside world, achieving isolation between the battery pack liquid cooling plate and the external environment. When the battery system cannot be equipped with a water-cooled unit due to special scenario limitations, coolant can be pre-filled into the liquid cooling plate and the assembly can be shut down. Utilizing the much higher thermal conductivity of the coolant than air, the heat exchange capacity of the battery pack to the surrounding environment is enhanced, and the operating temperature of the battery pack is reduced through natural cooling, ensuring the stability of battery operation in scenarios without water cooling.

[0018] 4. This utility model adopts a modular structure with main components and left / right components spliced ​​together. The components are assembled in a detachable manner. When the inlet / outlet connector, ball valve body, or pipeline malfunctions, the corresponding component can be disassembled and the faulty part replaced individually, without the need for the entire package to be scrapped. This design significantly reduces material waste and maintenance time costs, improves component replaceability and maintenance convenience, and has a simple overall structure and clear principle, making it valuable for widespread application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 For the explosion of this utility model Figure 1 ; Figure 2 For the explosion of this utility model Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a schematic diagram of the working state of this utility model (the main pipeline is fully open); in the diagram, yellow represents coolant; Figure 5 This is a schematic diagram of the working state of this utility model (bypass pipeline is connected); Figure 6 This is a schematic diagram showing the change of the cross-sectional area of ​​the main pipeline of this utility model with the angle. In the diagram: 1. Bolt mounting hole; 2. Fastening bolt; 3. External male connector; 4. Silicone foam; 5. Sealing ring; 6. Drive device; 7. Locating pin hole; 8. Right bypass pipe; 9. Left bypass pipe; 10. Right main pipe; 11. Right component; 12. Main component; 13. Left component; 14. Ball valve body; 15. Connecting rod; 16. Internal male connector; 17. Middle bypass pipe; 18. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this application will be described in detail below through specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0022] In the description of this utility model, it should be understood that the terms "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify 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. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0023] like Figure 1 , Figure 2 and Figure 3As shown, an inlet / outlet assembly capable of bypass switching and flow regulation specifically includes a main component 13, a side component, a main pipeline, a bypass pipeline, and a ball valve body 15; The main body component 13 has a central cavity that runs through it. This central cavity provides a stable installation space for the central bypass pipe 18 and serves as a connecting channel between the left and right cavities, ensuring the overall connectivity of the flow channel and preventing coolant from stagnating when switching paths. The side components include a left component 14 and a right component 12, which are installed on both sides of the main component 13. The left component 14 and the main component 13 enclose each other to form a left cavity, and the right component 12 and the main component 13 enclose each other to form a right cavity. The left cavity, the middle cavity, and the right cavity are connected in sequence. The spliced ​​cavity design facilitates the individual installation and subsequent maintenance and replacement of each component (such as the ball valve body 15 and the bypass pipeline). The continuous layout of the cavities ensures the smoothness of the coolant when switching between the main pipeline and the bypass pipeline, and reduces local resistance loss. The main pipeline is used to connect the internal and external pipelines of the battery pack to transport coolant. It includes a left main pipeline passing through the left cavity and a right main pipeline 11 passing through the right cavity. The left and right main pipelines are arranged in parallel. The parallel layout of the dual main pipelines can respectively undertake the functions of coolant inlet and outlet, avoiding the failure of the whole pack temperature control due to blockage of a single pipeline. At the same time, it provides a structural basis for subsequent individual adjustment of the flow of each pipeline and adapts to the differentiated flow requirements of multi-battery pack systems. The bypass pipeline is arranged in parallel with the main pipeline to allow the coolant to bypass the battery pack and flow back directly. The bypass pipeline includes a left bypass pipeline 10, a middle bypass pipeline 18, and a right bypass pipeline 9. The left bypass pipeline 10 is connected to both ends of the left main pipeline, and the right bypass pipeline 9 is connected to both ends of the right main pipeline 11. The middle bypass pipeline 18 is installed in the middle cavity, and its two ends are connected to the left bypass pipeline 10 and the right bypass pipeline 9, respectively, forming a bypass loop. The parallel structure of this bypass loop and the main pipeline can quickly switch the coolant path in extreme environments (high temperature / low temperature after parking), avoiding the low temperature coolant from further lowering the battery temperature or the high temperature coolant from raising the battery temperature, solving the problem of reverse temperature control in traditional non-bypass structures. At the same time, the segmented design of the bypass pipeline (left / middle / right) makes it easy to adjust the layout according to the actual installation space, improving the compatibility of the assembly. The spherical valve body 15 is rotatably installed in the left and right cavities, and is located at the junction of the bypass pipeline and the main pipeline. The spherical valve body 15 is connected to the drive device 6 via the connecting rod 16. The drive device 6 drives the spherical valve body 15 to rotate, thereby switching the on / off state of the main pipeline, adjusting the flow cross-sectional area of ​​the main pipeline, or switching to the bypass pipeline conduction state. The installation position of the spherical valve body 15 corresponds to the junction of the two pipelines, ensuring that the path switching can be achieved with a single rotation, reducing action delay. At the same time, through precise control of the valve body rotation angle, it is possible to achieve complete on / off of the main pipeline (to meet the sealing and isolation requirements) and to fine-tune the flow cross-sectional area (to balance the flow differences of multiple packages), so that a single valve body has both switching and adjustment functions, simplifying the structure while improving control flexibility.

[0024] In some embodiments, the left component 14 and the right component 12 are detachably connected to the main component 13 by bolts. The bolt connection method can ensure the connection stability between the left / right component and the main component 13, avoiding the risk of leakage caused by loose components when the coolant flows. On the other hand, it can realize the individual disassembly of each component. When the internal components such as the left bypass pipe 10 and the ball valve body 15 malfunction, it is not necessary to disassemble the entire assembly. Only the bolts on the corresponding side need to be removed to separate the left component 14 or the right component 12 for repair and replacement, which greatly reduces the maintenance difficulty and time cost, and further enhances the modularity and easy maintenance characteristics of the assembly.

[0025] In some embodiments, the spherical valve body 15 has a through hole, the diameter of which is adapted to the inner diameter of the main pipeline and the bypass pipeline to ensure that there is no significant throttling loss when the coolant flows; the drive device 6 drives the connecting rod 16 to drive the spherical valve body 15 to rotate, which can realize precise switching between three functional states: such as Figure 4 As shown, when the ball valve body 15 rotates to the first position, the axis of the through hole is completely aligned with the axis of the main pipeline, and the main pipeline is fully open. At this time, the coolant can be delivered to the battery pack at maximum flow rate, meeting the rapid temperature control requirements of the battery under high load. Figure 5 As shown, when rotated to the second position, the through-hole axis is precisely aligned with the bypass pipe axis, the bypass pipe is open and the main pipe is simultaneously closed, allowing the coolant to bypass the battery pack and flow back directly, avoiding the impact of unsuitable-temperature coolant on the battery under extreme environments; Figure 6 As shown, when rotated to the third position, the through hole axis and the main pipeline axis form a preset angle between 0° and 90°. The flow cross-sectional area of ​​the main pipeline gradually decreases as the angle increases. By fine-tuning the angle, the flow rate can be continuously adjusted, thereby balancing the flow rate differences of the multi-battery pack system and ensuring the temperature uniformity of each battery pack.

[0026] In some embodiments, two ball valve bodies 15 installed in the left and right cavities are respectively connected to the corresponding drive devices 6 via independent connecting rods 16, thereby realizing independent control of the left main pipeline and the right main pipeline 11. The advantages of this independent control design are: on the one hand, when only the inlet or outlet flow rate of the battery pack coolant needs to be adjusted (such as when calibration is required due to abnormal flow rate in a single path), the corresponding ball valve body 15 can be driven to rotate independently without the need to adjust the two pipelines simultaneously, reducing unnecessary flow fluctuations; on the other hand, if one drive device 6 or connecting rod 16 fails, the other path can still work normally, ensuring that the basic coolant delivery function of the battery pack is not affected, improving the reliability of the assembly operation, and is especially suitable for new energy vehicle battery system scenarios with high requirements for continuous temperature control.

[0027] In some embodiments, such as Figure 1 , Figure 2 As shown, the inlet and outlet assembly also includes a sealing component to ensure sealing performance, which specifically includes silicone foam 4 and sealing ring 5; The silicone foam 4 is located on the mating surface between the inlet / outlet assembly and the battery pack tray. During assembly, it is tightened by fastening bolts 2 through bolt mounting holes 1. Under the tightening force, the silicone foam 4 undergoes elastic compression, which can tightly fill the tiny gaps on the mating surface, effectively preventing external dust and moisture from entering the battery pack and preventing coolant leakage, thus ensuring the overall airtightness of the battery pack. The sealing ring 5 is located on the connection surface between the main component 13 and the left component 14 and right component 12, and is arranged along the flow path edge of the main pipeline and bypass pipeline. It can specifically seal the flow path gaps at the component splicing points, preventing coolant leakage from the component connection points during flow or path switching, ensuring that all coolant is transported along the preset pipeline, avoiding waste and preventing leaked coolant from corroding other components, further improving the reliability and safety of the assembly operation.

[0028] In some embodiments, such as Figure 1 , Figure 2 As shown, the connecting surfaces of the left component 14, right component 12, and main component 13 are also provided with positioning structures. These positioning structures specifically include positioning pins 8 located on the sides of the left component 14 and right component 12, and positioning pin holes 7 opened on the corresponding sides of the main component 13. During assembly, the positioning pins 8 and positioning pin holes 7 precisely engage, allowing for quick determination of the relative positions of the left / right components and the main component 13. This design, on the one hand, shortens assembly time, avoids repeated adjustments due to component misalignment, and improves production efficiency; on the other hand, it ensures precise alignment of the axes of the left cavity, middle cavity, and right cavity, preventing increased coolant flow resistance or localized leakage due to cavity misalignment. Simultaneously, it ensures the installation position accuracy of components such as the ball valve body 15 and bypass pipes, laying a structural foundation for smooth switching between the main pipeline and bypass pipeline, and precise flow regulation.

[0029] Furthermore, in a second aspect, this utility model also provides a battery pack, wherein the aforementioned inlet / outlet assembly capable of bypass switching and flow regulation is fixedly installed on the battery tray of the battery pack. This assembly design allows the battery pack to directly integrate bypass switching, flow regulation, and sealing isolation functions without the need for additional independent flow control valves, bypass pipelines, or other components, effectively simplifying the overall structure of the battery pack thermal management system and reducing space occupation and assembly costs. At the same time, by leveraging the temperature control, flow balancing, and multi-scenario adaptability of the inlet / outlet assembly, the operational safety of the battery pack in extreme environments, the temperature uniformity under different operating conditions, and the heat dissipation stability in scenarios without water cooling units can be significantly improved, further extending the overall cycle life and reliability of the battery pack.

[0030] In some embodiments, the left and right main pipes 11 of the inlet and outlet assembly are each provided with inner and outer ends that are distinct from each other, and the orderly delivery of coolant is achieved through the docking of the two ends. The inner ends of the left and right main pipes 11 are respectively sealed to the inner male connector 17 (such as by welding or threaded sealing with a sealing ring). The end of the inner male connector 17 away from the main pipe is sealed to the corresponding liquid cooling pipeline inside the battery pack, ensuring that the coolant flows smoothly from the main pipe into the liquid cooling system of the battery pack without the risk of leakage. The outer ends of the left and right main pipes 11 are respectively connected to the outer male connector 3 with the same sealing standard. The end of the outer male connector 3 away from the main pipe is sealed to the corresponding pipeline of the external thermal management unit. This double sealing docking design not only ensures the sealing of the coolant delivery process and avoids temperature control failure or component corrosion caused by leakage, but also improves the assembly compatibility of the assembly with the battery pack and the external thermal management unit through the standardized docking structure of the male connector, which facilitates later maintenance and replacement.

[0031] The method of using the inlet and outlet assembly of this utility model, which enables bypass switching and flow regulation, achieves multi-mode switching based on the rotation control of the ball valve body, as detailed below: In the normal temperature control mode (main pipeline open): the drive device 6 controls the ball valve body 15 to rotate to the first position, so that the axis of the valve body through hole coincides with the axis of the main pipeline, the main pipeline is fully open and the bypass pipeline is closed. The coolant of the external thermal management unit enters the right main pipeline 11 through the external male connector 3 (with the right main pipeline 11 as the water inlet pipe), and then flows into the internal liquid cooling pipeline of the battery pack through the internal male connector 17. After completing the heat exchange, it flows back to the external thermal management unit through the left main pipeline (as the water outlet pipe), which meets the temperature control requirements during normal battery operation.

[0032] Extreme Environment Bypass Mode (Bypass Pipe Activation): When the coolant approaches extreme ambient temperatures (high / low temperatures) after prolonged vehicle parking, the drive unit 6 rotates the ball valve body 15 to the second position, aligning the valve body through-hole axis with the bypass pipe axis, thus activating the bypass pipe and shutting off the main pipe. The coolant bypasses the battery pack and flows directly back to the thermal management unit via the left bypass pipe 10, the middle bypass pipe 18, and the right bypass pipe 9, preventing unsuitable coolant from affecting battery performance.

[0033] Flow regulation mode (fine adjustment of flow cross-sectional area): When there are flow differences in the multi-battery pack system, the drive device 6 drives the ball valve body 15 to rotate to the third position (the through hole axis and the main pipeline axis are at a preset angle). By adjusting the rotation angle, the flow cross-sectional area of ​​the main pipeline is changed, the flow of the single coolant is precisely adjusted, the flow distribution of each battery pack is balanced, and the temperature uniformity is ensured.

[0034] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this utility model and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

Claims

1. An inlet / outlet assembly capable of bypass switching and flow regulation, characterized in that, include: The main component has a central cavity that penetrates through it. The side members include a left member and a right member installed on both sides of the main member. The left member and the main member enclose a left cavity, and the right member and the main member enclose a right cavity, and the left cavity, the middle cavity, and the right cavity are connected in sequence. The main pipeline, used to connect the internal and external pipelines of the battery pack to transport coolant, includes a left main pipeline passing through the left cavity and a right main pipeline passing through the right cavity, with the left and right main pipelines arranged in parallel. A bypass pipeline, arranged parallel to the main pipeline, is used to allow coolant to bypass the battery pack and flow directly back; the bypass pipeline includes a left bypass pipeline, a middle bypass pipeline and a right bypass pipeline, the left bypass pipeline is connected to both ends of the left main pipeline, the right bypass pipeline is connected to both ends of the right main pipeline, the middle bypass pipeline is installed in the middle cavity, and its two ends are connected to the left bypass pipeline and the right bypass pipeline respectively, forming a bypass loop; A spherical valve body is rotatably installed in the left and right cavities and located at the junction of the bypass pipeline and the main pipeline. The spherical valve body is connected to the driving device through a connecting rod. The driving device drives the spherical valve body to rotate to switch the on / off state of the main pipeline, adjust the flow cross-sectional area of ​​the main pipeline, or switch to the bypass pipeline conduction state.

2. The inlet / outlet assembly with bypass switching and flow regulation according to claim 1, characterized in that, The left and right components are respectively connected to the main component by bolts.

3. The inlet / outlet assembly with bypass switching and flow regulation according to claim 1, characterized in that, The spherical valve body has a through hole. When the spherical valve body is rotated to the first position, the axis of the through hole coincides with the axis of the main pipeline, and the main pipeline is fully open. When rotated to the second position, the axis of the through hole coincides with the axis of the bypass pipeline, the bypass pipeline is open, and the main pipeline is closed. When rotated to the third position, the axis of the through hole and the axis of the main pipeline are at a preset angle, and the flow cross-sectional area of ​​the main pipeline is adjusted with the change of angle.

4. The inlet / outlet assembly with bypass switching and flow regulation according to claim 1, characterized in that, The two ball valve bodies installed in the left and right cavities are connected to the corresponding drive devices through independent connecting rods, so as to realize the independent control of the two main circuits.

5. The inlet / outlet assembly with bypass switching and flow regulation according to claim 1, characterized in that, It also includes a sealing assembly, which includes silicone foam; the silicone foam is disposed on the mating surface of the inlet / outlet assembly and the battery pack tray, and is locked in place by fastening bolts.

6. The inlet / outlet assembly with bypass switching and flow regulation according to claim 5, characterized in that, The sealing assembly includes a sealing ring, which is disposed on the connection surface between the main component and the left and right components.

7. The inlet / outlet assembly with bypass switching and flow regulation according to claim 1, characterized in that, The connecting surfaces of the left and right components and the main component are also provided with positioning structures; the positioning structures include positioning pins on the sides of the left and right components, and positioning pin holes on the corresponding sides of the main component, wherein the positioning pins and positioning pin holes cooperate to achieve positioning and assembly of each component.

8. A battery pack, characterized in that, The battery pack has an inlet / outlet assembly capable of bypass switching and flow regulation as described in any one of claims 1-7 mounted on its battery tray.

9. A battery pack according to claim 8, characterized in that, The left main pipeline and the right main pipeline of the inlet and outlet assembly are both provided with inner ends and outer ends; The inner ends of the left and right main pipes are respectively sealed to the inner male connector, and one end of the inner male connector is connected to the corresponding liquid cooling pipeline inside the battery pack; the outer ends of the left and right main pipes are respectively sealed to the outer male connector, and one end of the outer male connector is connected to the corresponding pipeline of the external thermal management unit.

Images