Condensate water prevention machine shell module, pump and energy storage system

Abstract

The invention belongs to the technical field of shield pumps, and provides an anti-condensate water machine shell module, a pump and an energy storage system.The anti-condensate water machine shell module comprises a motor machine shell and a plugging structure, at least one water guiding groove is formed in the inner side wall of the motor machine shell, the water guiding grooves are formed in the axial direction of the motor machine shell, and after the motor machine shell is installed, the water guiding grooves are communicated with the plugging structure. At least one water chute is located at the lowest point of the motor shell; a mounting hole is formed in the bottom of the water guide groove, a plugging structure capable of sealing the mounting hole is mounted in the mounting hole, water in the water guide groove flows into the plugging structure, the plugging structure can be opened to discharge liquid in the water guide groove, and the plugging structure can be automatically closed to plug the mounting hole.

Description

Technical Field

[0001] This invention belongs to the field of shielded pump technology, and particularly relates to an anti-condensate housing module, pump and energy storage system. Background Technology

[0002] With the rapid development of the electrochemical energy storage industry, energy storage systems (ESS) are evolving towards larger capacity, higher power density, and higher safety and reliability. As a core subsystem ensuring the safety, lifespan, and performance of energy storage systems, the selection of the circulation pump, a key component of the thermal management system, is crucial.

[0003] Among the many types of pumps, the horizontal multistage centrifugal shielded pump has become one of the ideal choices for energy storage thermal management systems due to its structural advantages of no leakage, low noise, and high integration.

[0004] However, energy storage thermal management systems face extreme temperature operating conditions, with their cooling media operating over a very wide temperature range, typically from -40°C to 95°C. Under these extreme temperature conditions, the performance requirements for the canned motor are even higher, especially regarding the protection against condensate from its internal motor.

[0005] When the energy storage thermal management system starts up in a low-temperature environment (such as -40°C) or restarts after a long-term shutdown, the temperature inside the pump chamber and motor chamber may be much lower than the dew point temperature of the ambient air. This causes water vapor in the air to condense inside the shielded motor, forming condensate. Specifically, condensate forms on the surface of the stator winding shield, insulation materials, and critical components such as the iron core. This condensate can cause the following serious problems: Electrical short circuit: Condensation causes a sharp drop in the insulation resistance between motor windings, which can easily lead to a short circuit or even burn out the motor.

[0006] Corrosion of metal components: Metal components inside the motor (such as bearings, stator and rotor cores, shielding sleeves, etc.) are prone to electrochemical corrosion, which can lead to bearing jamming or even seizing, shielding sleeve damage and other malfunctions.

[0007] The aforementioned problems will severely impact the inherent reliability advantages of canned motor pumps, potentially causing unexpected shutdowns of the circulating pumps, which in turn will affect the temperature control and safety of the entire energy storage system.

[0008] Existing solutions typically involve improving the sealing rating of the canned motor pump to prevent external moisture from flowing into the unit, thus achieving an IP67 protection rating. The drawback of this approach is that for complex horizontal multistage canned motor pumps with numerous sealing interfaces, achieving an IP67 sealing rating is extremely difficult, requires very high manufacturing standards, and necessitates 100% airtightness testing, significantly increasing manufacturing costs.

[0009] On the client side, if some structures need to be disassembled for maintenance or system consolidation, it will inevitably damage their original sealing integrity, resulting in a permanent decrease in the protection level and creating potential security risks.

[0010] Another approach is to use a labyrinthine drainage system, providing an open drainage path so that condensate generated inside the motor can flow out naturally. However, this solution suffers from a limitation due to the physical connection to the outside environment, preventing the pump body from achieving a high level of sealing protection. It typically only reaches IP54 or lower, allowing external dust and other impurities to enter, which fails to meet the long-term reliability requirements of energy storage scenarios, especially in outdoor or industrial environments. Furthermore, when temperature changes are not drastic or the amount of condensate is small, relying on natural drainage is inefficient, and water may remain. Summary of the Invention

[0011] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an anti-condensation housing module, which solves the problem that existing motor housings cannot adaptively discharge condensation generated inside the motor housing while maintaining a high sealing level.

[0012] Another objective of this invention is to provide a pump that, by integrating the aforementioned anti-condensate housing module, solves the problem caused by internal condensate in such pumps under wide-temperature operating conditions, such as in energy storage thermal management systems.

[0013] Another objective of this invention is to provide an energy storage system that systematically solves the problem affecting the system's service life by using the aforementioned shielded pump with an integrated anti-condensation housing module as the core of the thermal management system's circulating power.

[0014] To achieve this objective, the present invention adopts the following technical solution: A condensate-proof housing module, comprising: The motor housing and sealing structure include at least one water guide groove on the inner side wall of the motor housing, the water guide groove being arranged along the axial direction of the motor housing, and after the motor housing is installed, at least one of the water guide grooves being located at the lowest point of the motor housing. The water guide channel is provided with an installation hole near the opening end. A sealing structure capable of sealing the installation hole is installed in the installation hole. Water in the water guide channel flows into the sealing structure. The sealing structure can be opened to discharge the liquid in the water guide channel, and the sealing structure can be automatically closed to seal the installation hole.

[0015] Preferably, the width of the bottom of the water guide channel gradually increases from the tail of the motor housing to the opening of the motor housing.

[0016] Preferably, the bottom and sidewall of the water guide channel are connected by a first rounded corner.

[0017] Preferably, the bottom of the water guide channel at the end near the tail of the motor housing has a horizontal dimension ranging from 4mm to 6mm. And / or, the width of the bottom of the water guide channel at the end near the opening of the motor housing is in the range of 10mm-15mm; And / or, the depth of the water channel ranges from 2mm to 4mm.

[0018] Preferably, the sealing structure includes: The mounting housing assembly is configured to be installed in a mounting hole, and the outer wall of the mounting housing assembly is sealed to the mounting hole. The interior of the mounting housing assembly is provided with a fluid channel communicating with the mounting hole. A valve core structure is disposed within the fluid channel, and the valve core structure is axially movable along the fluid channel to open or close the fluid channel; A liquid absorption expansion assembly is disposed in the fluid channel and located between the valve core structure and the mounting housing assembly, and drives the valve core structure to move and open the fluid channel.

[0019] Preferably, the mounting housing assembly includes: A sealing housing configured to be installed within a mounting hole; The mounting housing is coaxially arranged with the sealing housing, and the open end of the mounting housing is connected to the sealing housing; The valve core structure passes through the fluid channel and can move along the axial direction of the sealing housing toward the side where the mounting housing is located to seal the fluid channel; When the water-absorbing expansion component absorbs water and expands, it can push the valve core structure to move along the axial direction of the sealing housing towards the side where the sealing housing is located, thereby opening the fluid channel.

[0020] Preferably, the fluid channel includes: The mounting housing has a mounting receiving groove and a third through hole. The mounting housing has a mounting receiving groove and the third through hole is located at the bottom of the mounting receiving groove. The sealing housing includes a first receiving groove, a second receiving groove, and a fluid hole. The sealing housing includes a housing body, and the first receiving groove, the fluid hole, and the second receiving groove are sequentially formed along the axial direction of the housing body. The second receiving groove is located on the side close to the mounting housing. The valve core structure can be sequentially inserted into the first receiving groove, the fluid channel, and the second receiving groove, and can press against the bottom of the first receiving groove to block the fluid hole.

[0021] Preferably, the valve core structure includes: A valve core, one end of which is located in the first receiving groove, and the other end of which extends through the fluid hole into the second receiving groove and the mounting receiving groove; The second pressing member is sleeved and installed on the valve core and located in the mounting and receiving groove; A spring, which is sleeved on the valve core and disposed between the bottom of the second receiving groove and the second pressing member; The water-absorbing expansion member has one end pressed against the bottom of the mounting and receiving groove, and the other end pressed against the second pressing member.

[0022] A pump comprising the aforementioned anti-condensate housing module.

[0023] An energy storage system, including the pump described above.

[0024] Compared with existing technologies, the present invention has the following advantages: A water guide groove is formed on the inner wall of the motor housing, extending axially. The water guide groove is located at the lowest point of the motor housing and extends axially. The water guide groove serves to efficiently collect and drain water, collecting condensate dripping onto components such as the stator shield and core. When condensate is generated and collected in the water guide groove, the liquid flows into the sealing structure. The sealing structure is triggered to open and drain the liquid from the water guide groove. Once the accumulated water is drained, the sealing structure automatically closes to achieve a seal, restoring a high level of protection. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the motor housing in this invention; Figure 2 This is a front view of the motor housing in this invention; Figure 3 In this invention Figure 2 A schematic diagram of the AA-direction structure in the diagram; Figure 4 In this invention Figure 2 Schematic diagram of the BB-direction structure in the middle; Figure 5 This is a schematic diagram of part of the motor housing and sealing structure in this invention; Figure 6 This is a schematic diagram of the sealing structure in this invention; Figure 7 This is a front view of the sealing structure in this invention; Figure 8 This is a CC-direction sectional view of the sealing structure in this invention; Figure 9 This is a schematic diagram of the sealing shell and the first sealing ring in this invention; Figure 10 This is a cross-sectional view of the sealing housing and the first sealing ring in this invention; Figure 11 This is a schematic diagram of the mounting housing in the present invention; Figure 12 This is a cross-sectional view of the mounting housing in this invention; Figure 13 This is a schematic diagram of the valve core structure in this invention; Figure 14 This is a cross-sectional view of the valve core in this invention.

[0026] Among them, 1. Mounting housing assembly; 11. Sealing housing; 111. First abutment part; 112. Housing body; 113. Spare plate; 114. First receiving groove; 115. Second receiving groove; 116. Fluid hole; 12. Mounting housing; 121. First step; 122. Third through hole; 123. Fourth through hole; 2. Valve core structure; 21. Valve core; 211. End cap part; 212. Valve stem; 213. Third pressing part; 22. Second pressing part; 221. Water passage; 23. Spring; 24. Water absorption expansion part; 25. Second sealing ring; 3. Liquid absorption expansion assembly; 4. First sealing ring; 5. Motor housing; 51. Water guide groove; 511. Groove bottom; 52. Mounting hole; 53. First arc angle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] like Figures 1-14 As shown, this embodiment provides an anti-condensation housing module, including a motor housing 5 and a sealing structure. A water guide groove 51 is formed on the inner wall of the motor housing 5, and the water guide groove 51 is arranged along the axial direction of the motor housing 5. After the motor housing 5 is installed, at least one water guide groove 51 is located at the lowest point of the motor housing 5. Specifically, in this embodiment, multiple water guide grooves 51 are formed on the inner wall of the motor housing 5, and each pair of adjacent water guide grooves 51 is spaced 90° apart. In this embodiment, as... Figure 1As shown, after the motor housing 5 is installed, the control box mounted on the motor housing 5 is located at the top of the motor housing 5. In other embodiments, after the motor housing 5 is installed, the control box can be located on both sides of the motor housing 5, that is, the motor housing 5 is positioned along its own axis. Figure 2 When the motor housing 5 is rotated 90° clockwise or counterclockwise, a water guide groove 51 can be located at the lowest point of the motor housing 5.

[0035] Each water guide channel 51 is equipped with a sealing structure 5. After the motor housing 5 is installed, only the water guide channel 51 located at the lowest point of the motor housing 5 is in working condition, while the others are in a sealed state.

[0036] A mounting hole 52 is provided at the opening end of the water guide channel 51 near the motor housing 5. A sealing structure capable of sealing the mounting hole 52 is installed inside the mounting hole 52. The sealing rating of the sealing structure is IP67 or higher. Water in the water guide channel 51 flows into the sealing structure. The sealing structure can open to drain the liquid in the water guide channel 51, and the sealing structure can automatically close to seal the mounting hole 52. Specifically, the mounting hole 52 is provided at the lowest point of the water guide channel 51.

[0037] In this embodiment, a water guide groove 51 is provided on the inner side wall of the motor housing 5, extending axially. The water guide groove 51 is located at the lowest point of the motor housing 5 and extends axially. The water guide groove 51 serves to efficiently collect and guide water, collecting condensate dripping onto components such as the stator shield and iron core. When condensate is generated and collected in the water guide groove 51, the liquid flows into the sealing structure, triggering the sealing structure to open and drain the liquid from the water guide groove 51. Once the accumulated water is drained, the sealing structure automatically closes to achieve a seal and restore the high protection level.

[0038] When the inside of the motor housing 5 is dry, the sealing structure seals the mounting hole 52, forming a static seal with the mounting hole 52 with an IP67 or higher rating, effectively preventing external moisture and pollutants from entering.

[0039] In addition, when the performance of the motor's main seal weakens slightly over time, a small amount of moisture enters and forms condensate. By opening a mounting hole 52 on the motor housing 5 and installing a sealing structure inside the mounting hole 52, the moisture can be automatically released through the sealing structure, ensuring the motor's working performance and reducing maintenance costs.

[0040] Specifically, in this embodiment, when the motor stops, the water vapor in the air inside the motor condenses on the condensate inside the motor, such as on the surface of the stator winding shield, the insulating material, and key components such as the iron core. This condensate flows into the water guide groove 51 and is discharged into the motor through the mounting hole 52.

[0041] When the motor is operating normally, the sealing structure seals the mounting hole 52, preventing external moisture from flowing into the unit and avoiding electrochemical corrosion of the pump's internal components. This structure is a statically sealed, fully enclosed design, meeting at least an IP67 waterproof rating, and minimizing condensation. Furthermore, in cases where sealing performance deteriorates due to various reasons during use, it automatically drains water without manual maintenance, providing dual protection.

[0042] Preferably, the cross-section of the water guide channel 51 is rectangular. The rectangular cross-section structure is simple and easy to realize through simple machining or integral forming of the rectangular water guide channel 51 using a mold. The aforementioned machining methods include milling or broaching processes, which ensure high precision and reduce manufacturing costs, making it particularly suitable for mass production. Furthermore, its straight sidewalls and the bottom of the channel 511 form a stable, vortex-free flow channel, ensuring efficient guidance of condensate to the mounting hole 52.

[0043] Preferably, the width of the bottom 511 of the water guide channel 51 gradually increases from the tail of the motor housing 5 to the opening of the motor housing 5. This width refers to the horizontal dimension of the motor housing after installation on a horizontal surface; the width of the water guide channel 51 follows the same direction. This gradual width design forms a V-shaped drainage channel, which effectively guides condensate collected at different locations in the water guide channel 51 from the tail of the motor housing 5 to the mounting hole 52, improving drainage efficiency. Simultaneously, it prevents overflow from the water guide channel 51.

[0044] Preferably, the bottom 511 and sidewall of the water guide channel 51 are connected by a first rounded corner 53. The rounded corner transition can avoid stress concentration, improve the structural strength and durability of the motor housing 5, and at the same time, the smooth transition facilitates the smooth flow of water and reduces residue.

[0045] Preferably, the diameter of the first arc angle 53 is in the range of 2mm-3mm. The arc angle transition can effectively eliminate stress concentration at sharp corners, prevent cracks from forming under motor vibration or thermal stress, thereby improving the structural integrity and fatigue life of the motor housing 5. At the same time, the smooth arc transition greatly reduces the flow resistance of water, avoids the residue and accumulation of condensate in corners, and ensures a complete drying effect by draining accumulated water.

[0046] Preferably, the width of the bottom 511 of the water guide groove 51 at the end near the tail of the motor housing 5 is 4mm-6mm. Preferably, the width of the bottom 511 of the water guide groove 51 at the end near the opening of the motor housing 5 is 10mm-15mm. The 4mm-6mm narrow end design at the tail ensures that even at the most confined internal space of the motor, the water guide groove 51 can meet the requirements for condensate collection with minimal space. The 10mm-15mm wide end design at the opening provides a larger water collection buffer near the mounting hole 52, which can quickly collect the liquid flowing from the entire shaft into the water guide groove 51, preventing short-term liquid accumulation at the mounting hole 52, and ensuring that the sealing structure can contact the liquid in a timely and sufficient manner and trigger the drainage action.

[0047] Preferably, the sidewall of the water guide channel 51 is flat. In addition to the inherent advantages of simple processing and convenient inspection, the flat sidewall is more importantly convenient for cleaning and inspection during assembly and maintenance, avoiding dirt from hiding in the complex curved surface and ensuring the long-term smooth flow of the drainage channel.

[0048] Preferably, the depth of the water guide groove 51 ranges from 2mm to 4mm. In this embodiment, the reference plane for the depth of the water guide groove 51 is the inner wall of the motor housing 5, and the depth direction of the water guide groove 51 refers to the radial direction of the motor housing 5. The purpose of setting the depth range of the water guide groove 51 to 2mm-4mm is to provide sufficient temporary storage space for condensate. At the same time, this depth range has negligible impact on the internal magnetic field path, heat dissipation duct, and layout of other components of the motor, thus achieving functional integration while ensuring that the main performance of the motor is not affected.

[0049] Preferably, the bottom surface of the water guide channel 51 slopes gradually away from the central axis of the motor housing 5 from the rear of the motor housing towards the opening. The bottom surface of the water guide channel 51 is set as an inclined surface to facilitate the collection of water inside the motor housing 5 towards the mounting hole 52.

[0050] Preferably, the sealing structure in this embodiment includes a mounting housing assembly 1, a valve core structure 2, and a liquid absorption expansion assembly 3. The mounting housing assembly 1 is configured to be installed in the mounting hole 52, and the outer wall of the mounting housing assembly 1 is sealed to the mounting hole 52. The interior of the mounting housing assembly 1 is provided with a fluid channel communicating with the mounting hole 52.

[0051] The valve core structure 2 is inserted into the fluid channel and can move axially along the fluid channel to open or close the fluid channel. The liquid absorption expansion assembly 3 is disposed in the fluid channel and located between the valve core structure 2 and the mounting housing assembly 1, and drives the valve core structure 2 to move and open the fluid channel. Specifically, the fluid channel is a channel opened within the mounting housing assembly 1.

[0052] The mounting hole 52 for mounting the aforementioned housing assembly 1 can optionally be a mounting hole 52 formed on the pump housing. This sealing structure can also be used in other equipment, where a corresponding mounting hole 52 is formed.

[0053] In this embodiment, because the mounting hole 52 is connected to the fluid channel, the liquid absorption expansion component 3 is located between the valve core structure 2 and the mounting housing assembly 1. When the liquid absorption expansion component 3 absorbs water and expands, it pushes the valve core structure 2 to move axially along the sealing housing 11 to open the fluid channel, allowing the liquid in the mounting hole 52 to flow out through the fluid channel. When the liquid absorption expansion component 3 contracts due to the loss of liquid, the thrust it exerts decreases and disappears. At this time, the valve core structure 2, under the action of external force or self-driving force, can stably reset along the axial direction of the mounting housing assembly 1, and the valve core structure 2 can re-close the fluid channel. This process realizes a fully automatic, self-driven, seamless switching from opening for drainage to closing for sealing, ensuring the absolute sealing integrity of the equipment under normal and liquid-free conditions, effectively preventing the intrusion of external contaminants and leakage of internal media, achieving water discharge and waterless sealing, greatly improving the operational reliability of the equipment installed by this sealing structure, and also reducing the maintainability of the equipment.

[0054] Specifically, the sealing structure in this embodiment can be used to shield the pump to drain the condensate inside the motor.

[0055] In this embodiment, preferably, the valve core structure 2 can move axially toward the interior of the mounting hole 52 along the mounting housing assembly 1 to block the fluid passage, and the liquid absorption expansion assembly 3 can absorb liquid and expand to push the valve core structure 2 to move axially toward the exterior of the mounting hole 52 along the mounting housing assembly 1 to open the fluid passage.

[0056] Preferably, the mounting housing assembly 1 includes a sealing housing 11 and a mounting housing 12, wherein the sealing housing 11 is configured to be installed within the mounting hole 52, and a first sealing ring 4 is disposed between the outer side wall of the sealing housing 11 and the mounting hole 52. In this embodiment, the first sealing ring 4 can seal the gap between the mounting housing assembly 1 and the mounting hole 52 to meet the sealing requirements between the sealing structure and the mounting hole 52.

[0057] The mounting housing 12 is provided with a receiving groove. The mounting housing 12 and the sealing housing 11 are coaxially arranged, and the beginning end of the mounting housing 12 is connected to the sealing housing 11. Specifically, both the mounting housing 12 and the sealing housing 11 are circular structures.

[0058] The valve core structure 2 is disposed between the sealing housing 11 and the mounting housing 12, and passes through the fluid channel.

[0059] The valve core structure 2 can move axially towards the mounting housing 12 along the sealing housing 11 to block the fluid passage. When the water absorption and expansion assembly absorbs water and expands, it can push the valve core structure 2 axially away from the mounting housing 12 to open the fluid passage. The valve core structure 2 can move axially within the sealing housing 11 and the mounting housing 12. When the valve core structure 2 moves axially towards the mounting housing 12 along the sealing housing 11 to block the fluid passage...

[0060] The mounting housing 12 and the sealing housing 11 are fixed relative to each other, ensuring that the positions of the valve core structure 2 remain fixed and do not change during operation. Specifically, the mounting housing 12 and the sealing housing 11 are in a transition fit.

[0061] In this embodiment, the mounting housing assembly 1 is configured as a two-part structure consisting of a mounting housing 12 and a sealing housing 11, which facilitates the installation of the valve core structure 2.

[0062] Specifically, regarding the connection method between the mounting housing 12 and the sealing housing 11, the open end of the mounting housing 12 is inserted into the sealing housing 11. In other embodiments, a pressing part may be provided on the outside of the sealing housing 11, and the mounting housing 12 may be partially sleeved on the sealing housing 11 and pressed against the pressing part. More specifically, a step may be provided on the outer side wall of the end of the sealing housing 11, and the mounting housing 12 may be sleeved on the end of the sealing housing 11, with the end of the mounting housing 12 pressing against the step to achieve the connection between the two.

[0063] Preferably, a first abutment 111 is provided on the inner wall of the sealing housing 11, and the mounting housing 12 is inserted into the sealing housing 11. The end face of the opening end of the mounting housing 12 abuts against the first abutment 111. After the two are assembled, the first abutment 111 is used to limit the mounting housing 12.

[0064] Preferably, the fluid channel includes a mounting receiving groove 124, a third through hole 122, a first receiving groove 114, a second receiving groove 115, and a fluid hole 116. The mounting housing 12 has the mounting receiving groove 124, and the third through hole 122 is located at the bottom of the mounting receiving groove 123. The sealing housing 11 includes a housing body 112, with the first receiving groove 114, the fluid hole 116, and the second receiving groove 115 sequentially formed along the axial direction of the housing body 112. The second receiving groove 115 is located on the side closest to the mounting housing 12.

[0065] The valve core structure 2 can be sequentially inserted into the first receiving groove 114, the fluid channel and the second receiving groove 115, and can press against the bottom of the first receiving groove 114 to block the fluid hole 116.

[0066] Specifically, the diameter of the fluid hole 116 is smaller than the diameter of the first receiving groove 114 and the second receiving groove 115. One end of the valve core structure 2 is located in the first receiving groove 114, and the other end can be sequentially inserted into the fluid hole 116 and extended into the second receiving groove 115 and the aforementioned mounting receiving groove 124. The valve core structure 2 can press against the bottom of the first receiving groove 114 to block the fluid hole 116.

[0067] Preferably, a preset sliding gap L1 exists between the valve core structure 2 and the inner wall of the fluid hole 116 to ensure that after the valve core structure 2 can smoothly slide open along the axial direction of the fluid hole 6, the water in the mounting hole 52 can be discharged from the fluid hole 116 to the first receiving groove 114. When the valve core structure 2 moves along the axial direction of the sealing housing 11, the bottom of the first receiving groove 114 can limit the valve core structure 2.

[0068] The first blocking part 111 is disposed in the second receiving groove 115. In this embodiment, the first blocking part 111 is connected to the bottom of the second receiving groove 115. While limiting the installation housing 12, it can also increase the structural strength of the sealing housing 11.

[0069] The fluid hole 116 provides a guiding function for the movement of the valve core structure 2. Simultaneously, a spacer 113 is formed between the bottoms of the first receiving groove 114 and the second receiving groove 115. The bottom of the second receiving groove 115 also withstands the continuous pressure from the spring 23 and the impact of the valve core 21's movement. The fluid hole 116 is formed on the spacer 113. This spacer 113 is part of the housing body 112, and the integrated design of the housing body 112 ensures the structural integrity and long-term reliability of the sealing housing 11.

[0070] The machining and positioning accuracy of the fluid orifice 116 directly determines the smoothness of the valve core structure 2's movement and its sealing effect. Integrated molding avoids the cumulative errors caused by separate assembly, better ensuring the coaxiality between the fluid orifice 116 and the central axis of the housing body 112, guaranteeing precise alignment and stable sealing of the valve core. Furthermore, it reduces the number of parts and subsequent assembly and connection processes such as welding and thread tightening, improving production efficiency and reducing manufacturing costs and quality management complexity.

[0071] Specifically, the fluid channel includes a fluid hole 116 through which liquid flows out of the valve body structure.

[0072] Preferably, the first abutment 111 is located within the second receiving groove 115 and connected to the partition plate 113. This design allows the first abutment 111 to not only function as an axially limiting mounting housing 12, but also as a reinforcing rib of the partition plate 113. It can effectively resist the deformation or vibration that the partition plate 113 may experience under the movement of the valve core and the pressure of the spring 23, greatly enhancing the rigidity and stability of the partition plate 113. The assembly stress and working reaction force from the mounting housing 12 are transmitted to the partition plate 113 and the entire sealing housing 11 through the first abutment 111, forming a stable force transmission path, avoiding stress concentration in locally weak areas, and improving the overall load-bearing capacity of the structure.

[0073] Preferably, the valve core structure 2 includes a valve core 21, a second pressing member 22, a spring 23, and a water-absorbing expansion member 24. One end of the valve core 21 is located within the first receiving groove 114, and the other end extends through the fluid hole 116 into the second receiving groove 115 and the mounting receiving groove 124. The second pressing member 22 is sleeved on the valve core 21 and located within the mounting receiving groove 124. The spring 23 is sleeved on the valve core 21 and positioned between the bottom of the second receiving groove 115 and the second pressing member 22. One end of the water-absorbing expansion member 24 presses against the bottom of the mounting receiving groove 124, and the other end presses against the space between the second pressing members 22.

[0074] Preferably, the valve core structure 2 further includes a second sealing ring 25, which is disposed between the fluid hole 116 and the valve core 21.

[0075] Under the action of spring 23, the valve core 21 is pressed between the valve core 21 and the spacer plate 113 to seal the fluid hole 116. When the water-absorbing expansion member 24 absorbs water and expands, it acts on the second pressing member 22, pushing the valve core to move away from the mounting housing 12. At this time, spring 23 is compressed. When the liquid-absorbing expansion member 3 contracts due to the loss of liquid, the thrust it applies gradually decreases. At this time, the elastic potential energy stored in spring 23 is released and becomes the dominant force. The reset of spring 23 can squeeze the water-absorbing expansion member 24, so that the water in the water-absorbing expansion member 24 is further squeezed out until spring 23 is completely reset. The valve core pushes the second pressing member 22, the valve core 21 is reset, and the fluid hole 116 is sealed by the second sealing ring 25, thus blocking the fluid passage.

[0076] The aforementioned mounting housing assembly 1 is designed as a split unit consisting of a sealing housing 11 and a mounting housing 12. This facilitates the installation of the valve core 21, the installation and pre-compression spring 23, and the water-absorbing expansion component 24, thereby improving production efficiency. The sealing housing 11 mates with the mounting hole 52 and achieves a seal through the first sealing ring 4, while the mounting housing 12 is used to accommodate and guide the movement of the valve core 21. The two components serve different purposes, primarily ensuring their respective manufacturing precision.

[0077] In addition, the first abutment 111 or the external step provides axial restraint, ensuring that no relative displacement occurs between the mounting housing 12 and the sealing housing 11 during operation, thus providing a basis for the stable movement of the valve core 21.

[0078] Spring 23 provides preload to valve core 21. In the absence of water, the second sealing ring 25 is stably pressed onto the spacer plate 113 by the second pressing member 22, forming a reliable seal.

[0079] The double seal ensures zero leakage when the device is closed, effectively protecting the main equipment.

[0080] The integrated design of the valve core 21, the selection of the spring 23, and the rapid reset of the water absorption expansion component 24 with the assistance of the spring 23, along with the reset of the spring 23, can squeeze the water absorption expansion component 24 to dry it. Together, these factors ensure the service life and number of operation cycles of the product.

[0081] Preferably, a first step 121 is provided on the inner side wall of the mounting housing 12, and the second pressing member 22 presses against the first step 121 to limit the axial movement of the valve core 21 along the sealing housing 11.

[0082] Preferably, a first fluid flow gap L2 exists between the water-absorbing expansion member 24 and the inner wall of the mounting housing 12. A third through hole 122 is provided at the bottom of the mounting housing 12, and the diameter of the water-absorbing expansion member 24 is larger than the diameter of the third through hole 122. Water in the mounting hole 52 enters through the third through hole 122, causing the water-absorbing expansion member 24 to absorb water and expand, acting on the second pressing member 22 and pushing the valve core 21 to move away from the mounting housing 12. The first fluid flow gap L2 ensures that the liquid can quickly and fully surround and contact the entire outer peripheral surface of the water-absorbing expansion member 24, significantly increasing its liquid absorption area, thereby improving the product's sensitivity and accelerating the response speed. At the same time, the third through hole 122 at the bottom of the mounting housing 12 serves as the main water inlet channel, working in conjunction with the fourth through hole 123 on the side to ensure that the liquid can reach the water-absorbing expansion member 24 via the shortest path, driving it to deform. The thrust generated by the expansion is efficiently transmitted to the valve core through the second pressing member 22.

[0083] Preferably, a water passage 221 is provided on the second pressing member 22, and the water in the water-absorbing expansion member 24 flows directly into the space between the second pressing member 22 and the second receiving groove 115 through the water passage 221, and then flows out through the fluid hole 116.

[0084] Preferably, the third through hole 122 is a circular hole, the water-absorbing expansion member 24 is a circular member, and the diameter of the third through hole 122 is smaller than the diameter of the water-absorbing expansion member 24, so as to ensure that the water-absorbing expansion member 24 will not come out of the mounting housing 12.

[0085] Preferably, a second fluid flow gap L3 exists between the mounting housing 12 and the mounting hole 52. A fourth through hole 123 is provided on the side wall of the mounting housing 12, which connects to the second receiving groove 115. This ensures that if a large amount of water enters the mounting hole 52, it will enter the interior of the mounting housing 12 through the second fluid flow gap L3 and the fourth through hole 123, and then flow out through the fluid hole 116. The fourth through hole 123 and the second fluid flow gap L3 between the mounting housing 12 and the mounting hole 52 together form a parallel drainage path. When the main drainage path becomes obstructed at the bottom of the mounting housing 12 due to trace impurities or increased liquid viscosity, the two parallel drainage paths ensure that the liquid is quickly diverted and discharged, which significantly improves the product's adaptability and reliability under complex or harsh working conditions.

[0086] Preferably, the fourth through hole 123 is located between the first step 121 and the open end of the mounting housing 12, passing through the second fluid flow gap L3 between the mounting housing 12 and the mounting hole 52. This ensures that water between the mounting housing 12 and the mounting hole 52 can enter the space where the spring 23 is located after passing through the fourth through hole 123, and then flow out quickly through the fluid hole 116. Positioning the fourth through hole 123 between the first step 121 and the open end ensures that liquid flowing in from the gap in the mounting hole 52 can be quickly guided. The liquid does not need to detour to the bottom of the mounting housing 12; it can directly enter the second receiving groove 114 through the fourth through hole 123 and flow out quickly through the fluid hole 116. This shortens the drainage path, reduces flow resistance, and thus accelerates the overall drainage speed and increases the sensitivity to liquid accumulation.

[0087] The aforementioned design with multiple flow channels and gaps makes it insensitive to trace impurities in the working environment, ensures smooth drainage, and has strong anti-pollution capabilities.

[0088] Preferably, the valve core 21 includes an end cap portion 211 and a valve stem 212, one end of the valve stem 212 is connected to the end cap portion 211, and the other end passes through the fluid hole 116, and the end cap portion 211 is disposed in the first mounting groove.

[0089] In this embodiment, the valve stem 212 and the end cap 211 are integrally formed, eliminating the risk of stress concentration, fatigue fracture or loosening that may exist at the connection point in the split design. The valve core is subjected to alternating stress under the continuous action of the spring 23 and the repeated pushing due to water absorption and expansion. The integrated structure ensures its absolute reliability and longer service life in long-term cyclic operation.

[0090] Simultaneously, it avoids coaxiality deviations caused by accumulated tolerances of multiple parts during assembly. The valve stem 212 and end cap 211, as an integral structure, can mate with the fluid orifice 116 and the second sealing ring 25, ensuring the alignment of the sealing surface during the reciprocating motion of the valve core, thus achieving a stable and leak-free sealing effect. Furthermore, it reduces the number of parts, improves production efficiency, and the one-piece molding structure avoids subsequent connection processes such as threaded connections and welding, reducing manufacturing costs and the complexity of quality control, making it ideal for large-scale mass production.

[0091] This embodiment also provides a pump that utilizes the aforementioned anti-condensate housing module. By integrating the aforementioned sealing structure, this pump solves the problem caused by the accumulation of condensate inside the shielded pump under wide-temperature conditions such as energy storage thermal management systems.

[0092] In this embodiment, when condensate is generated and collects in the water guide trough 51, the liquid flows into the sealing structure. The water-absorbing expansion element inside absorbs water and expands, thereby overcoming the spring force to push the valve core open and automatically drain the water accumulated in the water guide trough 51. After the water is drained, the sealing structure automatically resets and seals, restoring the high protection level.

[0093] This pump solves the problem of automatic discharge of internal condensate with a high IP67 sealing protection rating, achieving automatic operation of sealing under normal conditions and drainage when needed, thus meeting the high requirements of energy storage systems for minimal maintenance of core components.

[0094] Furthermore, by efficiently diverting and rapidly draining condensate, the time the motor's interior remains damp is minimized, effectively inhibiting electrochemical corrosion and insulation aging, and extending the service life of the motor and the entire pump unit. Additionally, both the aforementioned water guide channel 51 and the sealing structure employ a modular design, suitable for large-scale mass production, ensuring performance while controlling production costs.

[0095] This embodiment also provides an energy storage system, including the aforementioned pump. The pump is the core power component of this energy storage system and possesses excellent anti-condensation capabilities, thereby improving the stability and durability of the entire system. During system start-up and shutdown cycles or ambient temperature fluctuations, there is no need to worry about damage caused by condensation inside the pump, avoiding the risk of system downtime, performance degradation, or leakage. This makes the system particularly suitable for applications with stringent operational stability requirements, ensuring long-term, reliable, and efficient operation.

[0096] This energy storage system prevents safety issues caused by unexpected shutdowns of the thermal management circulation pump, such as insulation or bearing failures due to condensation in the motor, thus improving system safety. Furthermore, the use of these pumps significantly enhances the adaptability and operational reliability of the energy storage system in diverse geographical environments, reducing abnormal downtime caused by failures of core thermal management components and extending the overall lifespan of the system. In addition, by improving the lifespan and reliability of the core pump set, the maintenance costs of the entire energy storage system are reduced, thereby lowering production costs and ultimately reducing the overall economic cost of the energy storage system.

[0097] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A condensate-proof housing module, characterized in that, include: The motor housing (5) and the sealing structure are provided with at least one water guide groove (51) on the inner side wall of the motor housing (5). The water guide groove (51) is arranged along the axial direction of the motor housing (5). After the motor housing (5) is installed, at least one of the water guide grooves (51) is located at the lowest point of the motor housing (5). The water guide channel (51) is provided with an installation hole (52) near the opening end. A sealing structure capable of sealing the installation hole (52) is installed in the installation hole (52). Water in the water guide channel (51) flows into the sealing structure. The sealing structure can be opened to discharge the liquid in the water guide channel (51), and the sealing structure can be automatically closed to seal the installation hole (52).

2. The anti-condensation housing module according to claim 1, characterized in that, The width of the bottom (511) of the water guide channel (51) gradually increases from the tail of the motor housing (5) to the opening of the motor housing (5).

3. The anti-condensation housing module according to claim 1, characterized in that, The bottom (511) and sidewall of the water guide channel (51) are connected by a first rounded corner (53).

4. The anti-condensation housing module according to any one of claims 1-3, characterized in that, The bottom (511) of the water guide channel (51) near the tail of the motor housing (5) has a horizontal dimension ranging from 4mm to 6mm. And / or, the width of the bottom (511) of the water guide channel (51) at the end near the opening of the motor housing (5) is in the range of 10mm-15mm; And / or, the depth of the water channel (51) is in the range of 2mm-4mm.

5. The anti-condensation housing module according to any one of claims 1-3, characterized in that, The sealing structure includes: Mounting housing assembly (1) is configured to be installed in mounting hole (52), and the outer wall of the mounting housing assembly (1) is sealed to the mounting hole (52), and the interior of the mounting housing assembly (1) is provided with a fluid channel communicating with the mounting hole (52); A valve core structure (2) is inserted into the fluid channel. The valve core structure (2) is axially movable along the fluid channel to open or close the fluid channel. The liquid absorption expansion assembly (3) is disposed in the fluid channel and located between the valve core structure (2) and the mounting housing assembly (1), and drives the valve core structure (2) to move and open the fluid channel.

6. The anti-condensation housing module according to claim 5, characterized in that, The mounting housing assembly (1) includes: A sealing housing (11) is configured to be installed within a mounting hole (52); The mounting housing (12) is coaxially arranged with the sealing housing (11), and the open end of the mounting housing (12) is connected to the sealing housing (11). The valve core structure (2) passes through the fluid channel and can move along the axial direction of the sealing housing (11) toward the side where the mounting housing (12) is located to block the fluid channel; When the water absorption and expansion component absorbs water and expands, it can push the valve core structure (2) to move along the axial direction of the sealing housing (11) toward the side where the sealing housing (11) is located to open the fluid channel.

7. The anti-condensation housing module according to claim 6, characterized in that, The fluid channel includes: The mounting housing (12) has a mounting receiving groove (124) and a third through hole (122). The mounting housing (12) has a mounting receiving groove (124) and the third through hole (122) is located at the bottom of the mounting receiving groove (123). The sealing housing (11) includes a first receiving groove (114), a second receiving groove (115), and a fluid hole (116). The sealing housing (11) includes a housing body (112), and the first receiving groove (114), the fluid hole (116), and the second receiving groove (115) are sequentially provided along the axial direction of the housing body (112). The second receiving groove (115) is located on the side close to the mounting housing (12). The valve core structure (2) can be sequentially inserted into the first receiving groove (114), the fluid channel and the second receiving groove (115), and can press against the bottom of the first receiving groove (114) to block the fluid hole (116).

8. The anti-condensation housing module according to claim 7, characterized in that, The valve core structure (2) includes: The valve core (21) has one end located in the first receiving groove (114) and the other end extending through the fluid hole (116) into the second receiving groove (115) and the mounting receiving groove (124). The second pressing member (22) is sleeved and installed on the valve core (21) and located in the mounting receiving groove (124); A spring (23) is sleeved on the valve core (21) and disposed between the bottom of the second receiving groove (115) and the second pressing member (22); The water-absorbing expansion member (24) has one end pressed against the bottom of the mounting and receiving groove (124), and the other end pressed against the second pressing member (22).

9. A pump, characterized in that, Includes the anti-condensation housing module as described in any one of claims 1-8.

10. An energy storage system, characterized in that, Includes the pump described in claim 9.

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