An energy storage system

Abstract

The application discloses an energy storage system, comprising: an energy storage device and a soundproof wall. The energy storage device has a cavity and a ventilation port, the ventilation port is communicated with the cavity, and an electrical device is arranged in the cavity. The soundproof wall comprises a frame and sound-absorbing plates, the frame is connected to the energy storage device, the frame encloses an air passing port, the air passing port is communicated with the ventilation port, and each sound-absorbing plate is located in the air passing port. The application installs the soundproof wall on the outside of the energy storage device, realizes sound-absorbing and noise-reducing treatment on the whole process of air inflow and outflow of the energy storage device, intercepts and absorbs noise generated by air flow disturbance from the noise source, effectively reduces the diffusion of noise generated by air inflow and outflow of the ventilation port during the operation of the energy storage device, solves the problems that the existing energy storage system pollutes the surrounding environment and affects the body feeling of personnel due to air flow noise, and is especially suitable for application scenes sensitive to noise, such as residential areas and industrial and commercial dense areas, thereby expanding the application range of the energy storage system.

Description

Technical Field

[0001] This invention relates to the field of energy storage and noise reduction technology, and in particular to an energy storage system. Background Technology

[0002] With the rapid development of the new energy industry, energy storage devices are increasingly widely used in scenarios such as power peak shaving, voltage stabilization, and distributed energy storage. Energy storage devices typically consist of a housing, battery packs, PCS (Power Conversion System), water-cooled units, and other auxiliary components. The housing forms a cavity, in which the battery packs, PCS, and water-cooled units are integrated. All components work together to achieve the storage and conversion of electrical energy.

[0003] During the operation of energy storage equipment, the PCS unit and water-cooled unit continuously generate a large amount of heat, making them core heat source components. To prevent the high-temperature environment from affecting component performance and the overall operational stability of the equipment, it is necessary to exchange heat with the outside air in a timely manner to achieve cooling and heat dissipation. Based on this, the enclosure of energy storage equipment usually has corresponding air inlets and outlets that connect to the internal cavity. At the same time, both the PCS unit and the water-cooled unit are equipped with fans. The fans provide driving force to guide the outside airflow into the enclosure cavity through the air inlets, complete the heat exchange with the heat source components, and then exhaust it to the outside through the air outlets, forming a stable ventilation and heat dissipation circulation system.

[0004] However, the aforementioned ventilation and heat dissipation methods have significant technical drawbacks in practical applications: airflow rapidly enters and exits the inlet and outlet under the drive of the fan, and the airflow disturbs and rubs against the internal structure of the enclosure, the edges of the vents, and the surfaces of components during its flow, generating considerable operating noise. This noise diffuses with the airflow to the outside of the equipment, causing noise pollution to the surrounding environment. Especially in residential areas, densely populated commercial areas, and other scenarios with frequent human activity and high noise sensitivity, the noise generated by such energy storage devices (such as energy storage cabinets used to stabilize regional voltage) significantly reduces the comfort of surrounding people, affecting their daily lives and travel experiences, and even limiting the promotion and application of energy storage devices in such scenarios to some extent. Currently, there is a lack of targeted and highly adaptable solutions to the airflow noise problem caused by ventilation and heat dissipation in energy storage devices.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] To address one of the aforementioned technical problems, this application provides an energy storage system.

[0007] The present invention adopts the following technical solution: An energy storage system, comprising: An energy storage device having a cavity and a vent, the vent being connected to the cavity, and an electrical device being installed inside the cavity; The soundproof wall includes a frame and sound-absorbing panels. The frame is connected to the energy storage device and forms an air passage. The air passage is connected to the vent. Each sound-absorbing panel is located at the air passage. Both ends of the sound-absorbing panel are connected to the frame. The sound-absorbing panels are arranged sequentially at intervals. There is a ventilation gap between adjacent sound-absorbing panels. The plane containing the sound-absorbing panels and the frame has an angle.

[0008] Optionally, the energy storage system includes a switching component; The adapter components connect the frame and the energy storage device, respectively.

[0009] Optionally, the transition assembly includes multiple connecting beams, each of which is connected to the energy storage device, and the transition beams are arranged sequentially along the circumference of the vent. The transition beam includes a first plate and a second plate. The first plate is attached to the energy storage device, and the second plate is attached to the soundproof wall.

[0010] Optionally, the energy storage system includes two soundproof walls; The vent includes an air inlet and an air outlet; The air inlet and the air outlet are respectively located on opposite sides of the energy storage device; The two soundproof walls are respectively located on both sides of the energy storage device. The air inlet of one soundproof wall is connected to the air inlet, and the air inlet of the other soundproof wall is connected to the exhaust inlet.

[0011] Optionally, the sound-absorbing panel of the soundproof wall located on the side of the exhaust vent is curved; In the direction from the air inlet to the exhaust outlet, each sound-absorbing panel of the soundproof wall located on the side of the exhaust outlet gradually bends and extends downwards, and in the projection of each sound-absorbing panel onto the plane where the frame is located, the projection of the lower side of the upper sound-absorbing panel falls into the projection area of ​​the lower sound-absorbing panel.

[0012] Optionally, in the direction from the top to the bottom of the soundproof wall, the angle between the tangent of the lower edge of each sound-absorbing panel and the horizontal plane increases progressively.

[0013] Optionally, the energy storage device is provided with multiple air inlets on one side and multiple air outlets on the other side. One of the soundproof walls covers each of the air inlets, and the other soundproof wall covers each of the exhaust outlets.

[0014] Optionally, the sound-absorbing panel includes a main board and a porous sound-absorbing sheet; The motherboard is connected to the frame; The porous sound-absorbing sheet covers the surface of the motherboard, and multiple protrusions are provided on the porous sound-absorbing sheet; Each of the protrusions is located on the side of the porous sound-absorbing sheet opposite to the main board.

[0015] Optionally, the motherboard has multiple cavities, and the surface of the motherboard is provided with multiple fine-diameter holes, each of the fine-diameter holes being connected to a corresponding cavity, and the motherboard is configured as a Helmholtz array. The porous sound-absorbing sheet is provided with multiple through holes, which extend along the thickness direction of the porous sound-absorbing sheet, and each through hole is connected to a corresponding fine-diameter hole.

[0016] Optionally, the motherboard includes a housing and two boards, each of which has a plurality of cavities disposed therethrough; The outer casing includes a partition, a connecting plate, and two cover plates spaced apart and arranged in parallel. The partition is located between the two cover plates, and the connecting plate connects the two cover plates and the partition. The partition plate forms mounting cavities on both sides along its thickness direction, and the two plates are respectively accommodated in the corresponding mounting cavities. The cover plate is provided with fine-diameter holes corresponding to each of the cavities. The outer surfaces of the two cover plates are respectively covered with the porous sound-absorbing sheet.

[0017] By adopting the above technical solution, this application has the following beneficial effects: This application achieves sound absorption and noise reduction throughout the entire process of airflow entering and exiting the energy storage device by specifically installing soundproof walls on the outside of the energy storage device. It intercepts and absorbs noise generated by airflow disturbance at the source of noise, effectively reducing the outward diffusion of noise caused by airflow entering and exiting the vents during the operation of the energy storage device. It solves the problem of airflow noise pollution of the surrounding environment and affecting people's physical comfort in existing energy storage systems. It is especially suitable for noise-sensitive application scenarios such as residential areas and densely populated industrial and commercial areas, thus expanding the applicable scope of energy storage systems.

[0018] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 A first-view diagram of the energy storage system is shown. Figure 2 A second-view diagram of the energy storage system is shown; Figure 3 A three-dimensional structural diagram of the energy storage device in the energy storage system is shown; Figure 4 This shows another perspective view of the energy storage device in the energy storage system; Figure 5 The soundproof wall near the air intake in the energy storage system is shown. Figure 6 A schematic diagram of the sound-absorbing panel inside the soundproof wall near the air inlet of the energy storage system is shown. Figure 7 An exploded view of the sound-absorbing panel inside the soundproof wall near the air intake in the energy storage system is shown. Figure 8 A schematic diagram of the soundproof wall near the exhaust vent in the energy storage system is shown. Figure 9 A schematic diagram of the structure of each sound-absorbing panel inside the soundproof wall near the exhaust vent in the energy storage system is shown. Figure 10 A three-dimensional structural diagram of each sound-absorbing panel inside the soundproof wall near the exhaust vent in the energy storage system is shown. Figure 11 An exploded view of the sound-absorbing panel inside the soundproof wall near the exhaust vent in the energy storage system is shown.

[0020] In the diagram: 1. Energy storage device; 11. Air inlet; 12. Air outlet; 2. Soundproof wall; 21. Frame; 22. Sound-absorbing panel; 221. Main board; 2211. Panel; 22111. Cavity; 2212. Outer shell; 22121. Partition; 22122. Connecting plate; 22123. Cover plate; 221231. Narrow diameter hole; 222. Porous sound-absorbing sheet; 2221. Main sheet; 2222. Protrusion; 2223. Through hole; 3. Adapter assembly; 31. Connecting beam; 311. First panel; 312. Second panel.

[0021] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component 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 this invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" 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; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] like Figures 1 to 11 As shown in the figure, this application embodiment provides an energy storage system, including: an energy storage device 1 and a soundproof wall 2. The energy storage device 1 has a cavity and a vent, the vent being connected to the cavity, and an electrical device is disposed within the cavity. The soundproof wall 2 includes a frame 21 and sound-absorbing panels 22. The frame 21 is connected to the energy storage device 1, and the frame 21 encloses an air passage, which is connected to the vent. Each sound-absorbing panel 22 is located at the air passage, and both ends of the sound-absorbing panel 22 are respectively connected to the frame 21. The sound-absorbing panels 22 are arranged sequentially at intervals, and there is a ventilation gap between adjacent sound-absorbing panels 22. The plane containing the sound-absorbing panels 22 and the frame 21 forms an angle.

[0026] This application achieves sound absorption and noise reduction treatment for the entire process of airflow entering and exiting the energy storage device 1 by specifically installing a soundproof wall 2 on the outside of the energy storage device 1. It intercepts and absorbs the noise generated by airflow disturbance at the source of noise, effectively reducing the outward diffusion of noise caused by airflow entering and exiting the vents when the energy storage device 1 is running. It solves the problem of airflow noise pollution of the surrounding environment and affecting people's physical experience in existing energy storage systems. It is especially suitable for noise-sensitive application scenarios such as residential areas and densely populated industrial and commercial areas, thus expanding the applicable scope of energy storage systems.

[0027] This application employs a design that specifically adds a soundproof wall 2 to the exterior of the energy storage device 1. The soundproof wall 2 is securely connected to the energy storage device 1 via a frame 21, and the air passage formed by the frame 21 is precisely aligned and connected to the ventilation port of the energy storage device 1, forming a closed-loop sound absorption and noise reduction throughout the entire process of airflow entering and exiting the energy storage device 1. This structure can directly intercept and absorb noise generated by airflow disturbances and friction between airflow and components at the noise source, effectively reducing the outward diffusion of noise caused by airflow entering and exiting the ventilation port during the operation of the energy storage device 1. It fundamentally solves the core problem of existing energy storage systems' airflow noise polluting the surrounding environment and affecting people's comfort, and its noise reduction efficiency and stability are significantly better than conventional noise reduction solutions.

[0028] Leveraging its efficient and stable airflow noise reduction performance, this energy storage system can be flexibly adapted to noise-sensitive application scenarios such as residential areas, densely populated industrial and commercial areas, and urban public areas, breaking through the bottleneck of existing energy storage devices 1 being unable to be widely used in such scenarios due to excessive noise. This not only significantly expands the applicability of the energy storage system but also enhances the product's competitiveness and comprehensive application value in the new energy storage market, facilitating the large-scale deployment of energy storage device 1 in urban scenarios.

[0029] The soundproof wall 2 in this application adopts a purely external installation design, which does not occupy the already limited space inside the energy storage device 1, nor does it require modification to the cavity structure, electrical circuits, or heat dissipation paths of the energy storage device 1, thus preserving the original layout and operational performance of the equipment to the greatest extent. Furthermore, the soundproof wall 2 can be selectively installed directly onto the energy storage device 1 according to the noise requirements of the actual application scenario, installation conditions, or personalized customer needs, demonstrating extremely strong adaptability and flexible adjustment capabilities. In addition, the air inlet and vent are precisely connected, achieving efficient noise reduction while ensuring smooth airflow to meet the heat dissipation requirements of the electrical devices, perfectly achieving a balance between noise reduction, flexible installation, and stable equipment operation.

[0030] The soundproof wall 2 of this application consists only of a frame 21 and sound-absorbing panels 22. Its overall structure is simple and compact, requiring no complex auxiliary components or assembly processes. It can be quickly connected and fixed to the energy storage device 1 via the frame 21, resulting in low assembly difficulty, a short construction period, and convenient subsequent disassembly, maintenance, and replacement, effectively reducing installation and operation costs. Furthermore, it has fewer components, controllable manufacturing costs, and is easy to standardize production and adapt to various specifications of energy storage systems, combining practicality and economy.

[0031] This application, through a simple and reasonable structural design, achieves efficient and targeted noise reduction while taking into account installation flexibility, equipment operation stability and cost controllability. It effectively solves the noise problem of existing energy storage equipment 1 and has extremely high technical value and market application prospects.

[0032] In some possible implementations, the energy storage system includes a transfer assembly 3 that connects the frame 21 and the energy storage device 1.

[0033] The soundproof wall 2 connects the frame 21 and the energy storage device 1 via an adapter component 3. This adapter component 3 provides a precise and stable connection medium for both, ensuring the airtightness and structural strength of the connection between the frame 21 and the energy storage device 1, preventing airflow leakage from the connection gaps and generating additional noise, and also accommodating installation dimensional deviations between the frame 21 and the energy storage device 1, reducing assembly precision requirements. Furthermore, the soundproof wall 2 consists only of the frame 21, sound-absorbing panels 22, and the adapter component 3, featuring a simple and compact structure, requiring no complex auxiliary components. Assembly and disassembly can be completed quickly via the adapter component 3, making maintenance convenient. Manufacturing costs are controllable, facilitating standardized production and adaptation to various energy storage systems, thus combining practicality and economy.

[0034] In some possible implementations, the transition assembly 3 includes a plurality of connecting beams 31, each of which is connected to the energy storage device 1. The transition beams are arranged sequentially along the circumference of the vent. Each transition beam includes a first plate 311 and a second plate 312. The first plate 311 is attached to the energy storage device 1, and the second plate 312 is attached to the soundproof wall 2.

[0035] In this application, the connection structure between the energy storage device 1 and the soundproof wall 2 is precise and stable, with excellent adaptability and sealing performance. The adapter component 3 adopts a design with multiple connecting beams 31 arranged sequentially along the circumference of the vent. Each connecting beam 31 includes a first plate 311 and a second plate 312. The first plate 311 is connected to the energy storage device 1 in close contact, and the second plate 312 is connected to the soundproof wall 2 in close contact, forming a stable double-fit connection structure. The plates can be connected to the energy storage device or the soundproof wall using fasteners, such as bolts. The circumferentially distributed connecting beams 31 can evenly distribute the force, improve the overall structural strength of the connection between the soundproof wall 2 and the energy storage device 1, and prevent loosening or displacement under long-term operation or airflow impact. The double-plate 2211 close-fit design can maximize the sealing performance of the connection surface, effectively preventing airflow leakage from the connection gap and generating additional noise, further enhancing the noise reduction effect. At the same time, this structure can adapt to the installation size deviation between the frame 21 and the energy storage device 1, reduce the assembly accuracy requirements, and take into account both installation convenience and connection reliability. The adapter component 3 can be pre-fixed on the energy storage device 1 or the soundproof wall. Customers can choose whether to install the soundproof wall 2 according to their actual needs.

[0036] In some possible implementations, the energy storage system includes two soundproof walls 2, and the vents include an air inlet vent 11 and an exhaust vent 12. The air inlet vent 11 and the exhaust vent 12 are respectively located on opposite sides of the energy storage device 1. The two soundproof walls 2 are respectively located on both sides of the energy storage device 1. The air passage of one soundproof wall 2 is connected to the air inlet vent 11, and the air passage of the other soundproof wall 2 is connected to the exhaust vent 12.

[0037] This application employs two soundproof walls 2, positioned on opposite sides of the energy storage device 1, respectively connecting the air inlet vent 11 and the exhaust vent 12, forming a two-way noise reduction closed loop of "inlet side + exhaust side". The air inlet side soundproof wall 2 intercepts disturbance noise generated when airflow enters, while the exhaust side soundproof wall 2 specifically absorbs equipment operating noise and airflow friction noise carried by the exhaust airflow, achieving noise reduction without dead zones throughout the entire airflow process. Compared to a single-sided noise reduction structure, the noise suppression effect is more significant, further optimizing the surrounding environment. Simultaneously, the symmetrical layout of the two walls precisely matches the airflow paths, without interfering with airflow efficiency, balancing noise reduction performance and equipment heat dissipation requirements.

[0038] In some possible implementations, such as Figures 5 to 11 As shown, the sound-absorbing panel 22 of the soundproof wall 2 located on one side of the exhaust vent 12 is arc-shaped. In the direction from the air inlet vent 11 to the exhaust vent 12, each sound-absorbing panel 22 on the soundproof wall 2 located on the exhaust vent 12 side gradually bends downwards. Furthermore, in the projection of each sound-absorbing panel 22 onto the plane of the frame 21, the lower projection of the upper sound-absorbing panel 22 falls within the projection area of ​​the lower sound-absorbing panel 22. This structural design serves to prevent rainwater from flowing into the energy storage device 1 along the sound-absorbing panels 22. There is a ventilation gap between two adjacent sound-absorbing panels 22. By setting the sound-absorbing panel 22 located at the exhaust vent 12 to a structure that gradually bends downwards, the airflow direction can be changed, resulting in a larger gap between the airflow exiting the adjacent ventilation gaps, making it less likely for them to collide and form turbulence, thus reducing noise.

[0039] The intake-side soundproof wall 2 intercepts disturbance noise generated when airflow enters, while the exhaust-side soundproof wall 2 specifically absorbs equipment operating noise and airflow friction noise carried by the exhaust airflow, achieving noise reduction without dead zones throughout the entire airflow process. Especially addressing the issue of turbulent airflow on the exhaust side, the sound-absorbing panel 22 on this side is designed as an arc-shaped structure that bends downwards along the airflow direction. The projection of the lower edge of the upper sound-absorbing panel 22 completely falls within the projection area of ​​the lower sound-absorbing panel 22. This design actively guides the airflow downwards in an orderly manner, maintaining a large distance between airflows exiting adjacent ventilation gaps, effectively preventing airflow collisions and turbulence, and eliminating secondary noise caused by turbulence at its source. Compared to a single-sided flat sound-absorbing panel 22 structure, the noise suppression effect on the exhaust side is further improved, resulting in superior overall noise reduction performance.

[0040] In some possible implementations, in the direction from the top to the bottom of the soundproof wall 2, the angle between the tangent of the lower edge of each sound-absorbing panel 22 and the horizontal plane gradually increases, and the exhaust air directions of two adjacent ventilation gaps are not parallel and have an angle, which further increases the spacing between the airflows discharged from the adjacent ventilation gaps. In the direction of airflow discharge, the spacing between adjacent airflows gradually increases, avoiding or reducing the problem of adjacent airflows colliding and colliding with each other to form turbulence.

[0041] To address the issue of turbulent noise caused by airflow collisions on the exhaust side, this application features a refined design for the sound-absorbing panels 22 of the soundproof wall 2 on the exhaust vent 12 side. From the top to the bottom of the soundproof wall 2, the angle between the lower edge tangent of each sound-absorbing panel 22 and the horizontal plane gradually increases. This design ensures that the exhaust airflow directions of adjacent ventilation gaps form an angle and are not parallel, further increasing the initial distance between the exhaust airflows from adjacent gaps. Furthermore, the distance between adjacent airflows gradually increases in the exhaust direction, fundamentally avoiding or reducing the problem of turbulent flow caused by airflow collisions and collisions, thus completely eliminating secondary noise caused by turbulence. Simultaneously, the orderly guided airflow ensures smooth exhaust without affecting the heat dissipation efficiency of the energy storage device 1, achieving a deep match between noise reduction performance and heat dissipation requirements.

[0042] In some possible implementations, such as Figure 3 and Figure 4 As shown, the energy storage device 1 has multiple air inlets 11 on one side and multiple exhaust outlets 12 on the other side. One soundproof wall 2 covers each of the air inlets 11 and another soundproof wall 2 covers each of the exhaust outlets 12.

[0043] For example, the cavity within the energy storage device 1 is divided into a battery cavity, a water-cooled unit cavity, and a PCS cavity, etc. Corresponding air inlets 11 and exhaust outlets 12 need to be provided for the water-cooled unit cavity and the PCS cavity in the energy storage system. The soundproof wall 2 of this application is relatively large, and can completely cover all air inlets 11 or exhaust outlets 12 on the same side. The soundproof wall 2 of this application is highly versatile and does not require differentiation between different types of energy storage devices 1; a full-coverage structure is sufficient.

[0044] For scenarios where energy storage device 1 has multiple air inlet / exhaust vents 12 on the same side (such as vents corresponding to different cavities 22111 such as water-cooled unit cavity and PCS cavity), the single-sided soundproof wall 2 of this application has been optimized in size to completely cover all air inlet vents 11 or exhaust vents 12 on the same side at once, without the need to configure sound insulation components separately for different cavities 22111 and different types of vents. This design greatly improves the versatility of the soundproof wall 2, eliminating the need for customized adjustments based on the cavity 22111 partitioning method, number and type of vents of energy storage device 1, adapting to various types of energy storage devices 1 with different structures, significantly reducing design and manufacturing costs, and simplifying the assembly process by eliminating the need to connect individual vents one by one, further improving installation efficiency.

[0045] In some possible implementations, the sound-absorbing panel 22 includes a main board 221 and a porous sound-absorbing sheet 222. The main board 221 is connected to the frame 21, and the porous sound-absorbing sheet 222 covers the surface of the main board 221. The porous sound-absorbing sheet 222 is provided with a plurality of protrusions 2222, and each of the protrusions 2222 is located on the side of the porous sound-absorbing sheet 222 away from the main board 221.

[0046] In this application, the sound-absorbing panel 22 adopts a double-layer composite structure of a main board 221 and a porous sound-absorbing sheet 222. The main board 221 is firmly connected to the frame 21, providing structural support for the whole. The porous sound-absorbing sheet 222 covers the surface of the main board 221, specifically enhancing the sound absorption effect. The porous sound-absorbing sheet 222 can be adapted to different scenarios and uses various structures such as sound-absorbing cotton. Its core sound absorption principle is that through its own foamed pores and porous structure, the air inside the pores vibrates when sound waves impact, converting the mechanical energy of the sound waves into heat energy for dissipation. It has excellent absorption capabilities, especially for high-frequency noise. Combined with the angled design to suppress airflow turbulence noise, it achieves the dual effect of "high-frequency sound absorption + turbulence noise reduction". Compared with single-structure sound-absorbing components, it has a wider noise coverage range and a more thorough noise reduction effect. Different types of porous sound-absorbing sheets 222 can be flexibly replaced according to noise requirements, making maintenance convenient. At the same time, the overall number of parts is small, the manufacturing cost is controllable, and it is easy to standardize production and promote, combining practicality and economy.

[0047] The porous sound-absorbing sheet 222 is attached to the main board 221 on one side via the main sheet 2221, while the other side has multiple raised pillar structures 2222 (forming a small wave shape). This small wave shape increases the contact area with airflow. When gas impacts the raised pillars 2222 and the main sheet 2221, it can efficiently convert the mechanical energy carried by the gas disturbance into heat energy for dissipation. It has a particularly strong absorption capacity for high-frequency airflow noise. Combined with the overall design of the soundproof wall 2, it achieves noise reduction at the source. Compared with a planar sound-absorbing structure, the sound absorption efficiency and effect are significantly improved, further enhancing the overall noise control performance. The raised pillar structure of the porous sound-absorbing sheet 2222 has a simple design, and different specifications of the raised pillars 2222 can be flexibly replaced according to noise requirements, making subsequent maintenance and replacement convenient.

[0048] In some possible implementations, the porous sound-absorbing sheets 222 are respectively arranged on both sides of the main board 221 along the thickness direction. The sound-absorbing plate 22 adopts an optimized design with porous sound-absorbing sheets 222 arranged on both sides of the main board 221, so that the upper and lower boundaries of each ventilation gap form a sound-absorbing layer, and the protrusions 2222 of the porous sound-absorbing sheets 222 on both sides extend towards each other. This layout significantly increases the contact area between the sound-absorbing structure and the airflow, and extends the action path of the airflow and the sound-absorbing components within the ventilation gap. When the airflow passes through the gap, it can capture and absorb noise in the airflow from both the upper and lower sides simultaneously, efficiently converting the mechanical energy of the gas into heat energy for dissipation. Compared with a single-sided sound-absorbing design, the noise absorption is more comprehensive and more efficient, especially the suppression effect on high-frequency airflow noise is significantly improved, further consolidating the overall noise reduction performance.

[0049] In some possible implementations, the motherboard 221 has a plurality of cavities 22111, and a plurality of fine-diameter holes 221231 are provided on the surface of the motherboard 221. Each fine-diameter hole 221231 is connected to a corresponding cavity 22111. The motherboard 221 is configured as a Helmholtz array. A plurality of through holes 2223 are provided on the porous sound-absorbing sheet 222. The through holes 2223 extend along the thickness direction of the porous sound-absorbing sheet 222, and each through hole 2223 is connected to a corresponding fine-diameter hole 221231.

[0050] The motherboard 221 integrates a Helmholtz array function. By creating multiple cavities 22111 and corresponding connecting holes 221231, a Helmholtz plastic array is constructed using different aperture sizes. The core principle is that when sound waves enter the connecting holes 221231 (neck), the air column undergoes a piston-like motion under sound pressure, compressing or expanding the air within the cavity to generate vibration. This converts the mechanical energy of low-frequency noise into heat energy, achieving precise elimination of low-frequency noise. Combined with the porous sound-absorbing sheet 222 (with a small wave-shaped protrusion) for efficient absorption of high-frequency noise, a full-band noise reduction system of "low-frequency noise reduction + high-frequency sound absorption" is formed. Compared to a single-band noise reduction structure, this provides more comprehensive noise coverage, completely resolving the pain point of coexistence of high and low-frequency noise during the operation of the energy storage device 1, and significantly improving the noise reduction effect.

[0051] Multiple through holes 2223 are formed along the thickness direction on the porous sound-absorbing sheet 222. Each through hole 2223 is precisely connected to the narrow aperture 221231 of the Helmholtz array on the main board 221. The through holes 2223 avoid and guide the narrow aperture 221231, ensuring that sound waves can smoothly enter the narrow aperture 221231 (neck) and trigger the Helmholtz resonance effect without obstruction, thus ensuring efficient noise reduction of low-frequency noise. At the same time, the convex column and small wave shape of the porous sound-absorbing sheet 222 and its own pore structure can efficiently absorb high-frequency noise, forming a synergistic system of "through hole 2223 guidance + low-frequency noise reduction + high-frequency sound absorption". This not only avoids the sound-absorbing sheet from obstructing the low-frequency noise reduction effect, but also strengthens the noise control of the entire frequency band. Compared with a non-guiding structure, the noise reduction accuracy and overall performance are significantly improved.

[0052] In some possible implementations, the motherboard 221 includes a housing 2212 and two plates 2211, each of which has a plurality of cavities 22111 extending through it. The housing 2212 includes a partition 22121, a connecting plate 22122, and two spaced-apart cover plates 22123. The two cover plates 22123 are spaced apart and parallel to each other. The partition 22121 is located between the two cover plates 22123, and the connecting plate 22122 connects the two cover plates 22123 and the partition 22121. The partition 22121 forms mounting cavities on both sides along its thickness direction, and the two plates 2211 are respectively accommodated in their respective mounting cavities. The cover plates 22123 are respectively provided with fine-diameter holes 221231 corresponding to each cavity 22111. The outer surfaces of the two cover plates 22123 are respectively covered with porous sound-absorbing sheets 222.

[0053] Specifically, the two plates 2211 are respectively disposed on both sides of the partition 22121 along the thickness direction. The partition 22121 respectively closes one side port of the cavity 22111 of the two plates 2211, and the opposite sides of the two plates 2211 are covered by the porous sound-absorbing sheet 222. By setting two plates 2211, Helmholtz arrays can be formed on both sides of the main plate 221 along the thickness direction, so that the upper and lower boundaries of each ventilation gap have Helmholtz arrays. The function of the partition 22121 is to close the end of the cavity 22111 of the two plates 2211 that is opposite to the narrow diameter hole 221231, isolate the airflow in the cavity 22111 of the two plates 2211, and avoid turbulent noise caused by airflow collision. The mainboard 221 of this application adopts a composite structure of dual boards 2211 and partition 22121. The two boards 2211 are respectively located on both sides of the partition 22121 in the thickness direction, and multiple cavities 22111 are opened through them. The partition 22121 closes the port of the cavity 22111 away from the narrow diameter hole 221231, so that the two sides of the mainboard 221 form independent Helmholtz arrays. With the multi-hole sound-absorbing sheet 222 covering both sides, the upper and lower boundaries of each ventilation gap have the ability of "low-frequency noise reduction + high-frequency sound absorption". At the same time, the partition 22121 can effectively isolate the upper and lower airflows in the cavities 22111 of the two boards 2211, avoiding the collision of airflows to form turbulence and generate additional noise. This not only enhances the noise reduction performance of the whole frequency band, but also avoids secondary noise from turbulence at the source. Compared with the single-sided array structure, the noise reduction stability and comprehensiveness are greatly improved.

[0054] The outer shell 2212 includes a connecting plate 22122 and two spaced-apart cover plates 22123. The two cover plates 22123 are respectively attached to the side of the two plates 2211 facing away from the partition plate 22121. The cover plates 22123 are respectively provided with the fine-diameter holes 221231 corresponding to each cavity 22111. The connecting plate 22122 connects the two cover plates 22123 respectively. The outer shell 2212 is connected to the frame 21. Each fine-diameter hole 221231 is formed on the cover plate 22123. The cover plate 22123 covers the plate 2211, so that the fine-diameter holes 221231 communicate with the cavity 22111, forming a Helmholtz chamber. This assembly structure is simple and easy to assemble. The connecting plate 22122 is located on one side edge of the cover plate 22123 and connects the two cover plates 22123. The connecting plate 22122 and the cover plate 22123 can be a single piece. For example, the outer shell 2212 can be a high-strength metal structure, which is convenient to connect and assemble with the frame 21, and can also cooperate with the plate 2211 to form multiple Helmholtz chambers.

[0055] The outer shell 2212 adopts an integrated design of connecting plate 22122 and double cover plates 22123. The double cover plates 22123 are spaced apart and respectively attached to the side of the two plates 2211 opposite to the partition plate 22121. The cover plates 22123 have fine-diameter holes 221231 corresponding to the cavity 22111 to connect the cavity 22111 and form a Helmholtz chamber. The connecting plate 22122 connects the double cover plates 22123 and can be integrally formed with the cover plates 22123. The overall assembly structure is simple, requiring no complex positioning and calibration, which greatly improves assembly efficiency. The outer shell 2212 is preferably made of metal, with high structural strength. On the one hand, it can stabilize the connecting frame 21 and ensure the overall installation reliability of the soundproof wall 2. On the other hand, it can precisely fit with the plate 2211 to form multiple independent Helmholtz chambers, ensuring stable low-frequency noise reduction effect. At the same time, the integrated structure reduces the number of parts, reduces assembly errors and gap noise risks, and balances practicality and structural stability.

[0056] like Figures 5 to 7 As shown, the soundproof wall 2 located on one side of the air intake vent 11 has a connecting plate 22122 of its inner soundproof panel designed as an arc-shaped plate convex outward from the side opposite to the panel body 2211 (an arc-shaped plate convex outward from the side opposite to the energy storage device 1). The smooth, convex surface can guide the external airflow to flow smoothly to both sides of the sound-absorbing panel 22 along the thickness direction, avoiding direct airflow impact that generates turbulent noise. At the same time, it can achieve uniform airflow distribution, ensuring that the airflow smoothly enters the two adjacent ventilation gaps and improving air intake stability. In addition, the sound-absorbing panel 22 of the soundproof wall 2 on the side of the air intake vent 11 is inclined to the horizontal plane, which can not only extend the contact path between the airflow and the sound-absorbing panel 22 and enhance the sound absorption effect, but also guide the airflow to flow in an orderly manner, reduce the turbulent collision of airflow in the ventilation gaps, and further reduce the noise generation on the air intake side. This forms a synergistic effect with the arc-shaped connecting plate 22122, optimizing the noise reduction and ventilation performance on the air intake side.

[0057] like Figures 8 to 11 As shown, the connecting plate 22122 of the sound insulation wall 2 located on one side of the exhaust vent 12 protrudes towards the energy storage device 1. It diverts the hot air discharged from the energy storage device 1. The smooth, convex surface can guide the discharged airflow to flow smoothly to both sides of the sound absorption plate 22 along the thickness direction, avoiding direct airflow impact and generating turbulent noise. At the same time, it achieves uniform airflow diversion, ensuring that the airflow smoothly enters the two ventilation gaps, improving air intake stability, and reducing the noise generated by the airflow entering the system.

[0058] In some possible implementations, the partition 22121 is connected to the recessed side of the connecting plate 22122, and the partition 22121, connecting plate 22122, and cover plate 22123 are connected to form a single unit. The cross-section of the entire outer shell 2212 is approximately E-shaped, and the outer shell 2212 and the two plates 2211 can be quickly assembled, resulting in a simple structure and improved assembly efficiency.

[0059] The integrated shell 2212 comprises a partition 22121, a connecting plate 22122, and double cover plates 22123 as a single unit. The partition 22121 is connected to the recessed side of the connecting plate 22122. After molding, the cross-section of the three components is approximately E-shaped, resulting in a neat and robust overall structure. This integrated design eliminates the need for separate assembly of the partition 22121 and connecting plate 22122, allowing for direct and rapid alignment and assembly with the two plates 2211. This significantly simplifies the assembly process, shortens the construction cycle, and effectively improves assembly efficiency. Simultaneously, the E-shaped structure provides precise positioning and stable support for the double plates 2211, ensuring accurate alignment of the fine-diameter holes 221231 on the plates 2211 and the cover plates 22123, guaranteeing the molding accuracy of the Helmholtz chamber and its low-frequency noise reduction effect. Furthermore, the integrated shell 2212 can be made of metal to further enhance structural strength, both stabilizing the connecting frame 21 and preventing additional noise from assembly gaps, thus balancing practicality and reliability.

[0060] The outer surfaces of the two cover plates 22123 are respectively covered with the porous sound-absorbing sheets 222. The porous sound-absorbing sheets 222 are respectively arranged on both sides of the main board 221 along its thickness direction. The sound-absorbing plate 22 adopts an optimized design with porous sound-absorbing sheets 222 arranged on both sides of the main board 221, so that the upper and lower boundaries of each ventilation gap form a sound-absorbing layer, and the protrusions 2222 of the porous sound-absorbing sheets 222 on both sides extend towards each other. This layout significantly increases the contact area between the sound-absorbing structure and the airflow, extending the action path of the airflow and the sound-absorbing components within the ventilation gap. When the airflow passes through the gap, it can simultaneously capture and absorb noise in the airflow from both the upper and lower sides, efficiently converting the gas mechanical energy into heat energy for dissipation. Compared with a single-sided sound-absorbing design, noise absorption is more comprehensive and efficient, especially significantly improving the suppression effect on high-frequency airflow noise, further solidifying the overall noise reduction performance.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An energy storage system, characterized in that, include: An energy storage device having a cavity and a vent, the vent being connected to the cavity, and an electrical device being installed inside the cavity; The soundproof wall includes a frame and sound-absorbing panels. The frame is connected to the energy storage device and forms an air passage. The air passage is connected to the vent. Each sound-absorbing panel is located at the air passage. Both ends of the sound-absorbing panel are connected to the frame. The sound-absorbing panels are arranged sequentially at intervals. There is a ventilation gap between adjacent sound-absorbing panels. The plane containing the sound-absorbing panels and the frame has an angle.

2. The energy storage system according to claim 1, characterized in that, Including adapter components; The adapter components connect the frame and the energy storage device, respectively.

3. The energy storage system according to claim 2, characterized in that, The adapter assembly includes multiple connecting beams, each of which is connected to the energy storage device, and the connecting beams are arranged sequentially along the circumference of the vent. The transition beam includes a first plate and a second plate. The first plate is attached to the energy storage device, and the second plate is attached to the soundproof wall.

4. The energy storage system according to claim 1, characterized in that, Includes two soundproof walls; The vent includes an air inlet and an air outlet; The air inlet and the air outlet are respectively located on opposite sides of the energy storage device; The two soundproof walls are respectively located on both sides of the energy storage device. The air inlet of one soundproof wall is connected to the air inlet, and the air inlet of the other soundproof wall is connected to the exhaust inlet.

5. The energy storage system according to claim 4, characterized in that, The sound-absorbing panels of the soundproof wall located on one side of the exhaust vent are curved; In the direction from the air inlet to the exhaust outlet, each sound-absorbing panel of the soundproof wall located on the side of the exhaust outlet gradually bends and extends downwards, and in the projection of each sound-absorbing panel onto the plane where the frame is located, the projection of the lower side of the upper sound-absorbing panel falls into the projection area of ​​the lower sound-absorbing panel.

6. The energy storage system according to claim 5, characterized in that, In the direction from the top to the bottom of the soundproof wall, the angle between the tangent of the lower edge of each sound-absorbing panel and the horizontal plane increases progressively.

7. The energy storage system according to claim 4, characterized in that, The energy storage device is provided with multiple air inlets on one side and multiple air outlets on the other side. One of the soundproof walls covers each of the air inlets, and the other soundproof wall covers each of the exhaust outlets.

8. The energy storage system according to any one of claims 1-7, characterized in that, The sound-absorbing panel includes a main board and a porous sound-absorbing sheet; The motherboard is connected to the frame; The porous sound-absorbing sheet covers the surface of the motherboard, and multiple protrusions are provided on the porous sound-absorbing sheet; Each of the protrusions is located on the side of the porous sound-absorbing sheet opposite to the main board.

9. The energy storage system according to claim 8, characterized in that, The motherboard has multiple cavities, and the surface of the motherboard is provided with multiple fine-diameter holes, each of which is connected to a corresponding cavity. The motherboard is constructed as a Helmholtz array. The porous sound-absorbing sheet is provided with multiple through holes, which extend along the thickness direction of the porous sound-absorbing sheet, and each through hole is connected to a corresponding fine-diameter hole.

10. The energy storage system according to claim 9, characterized in that, The motherboard includes a shell and two boards, each of which has a plurality of cavities disposed through it; The outer casing includes a partition, a connecting plate, and two cover plates spaced apart and arranged in parallel. The partition is located between the two cover plates, and the connecting plate connects the two cover plates and the partition. The partition plate forms mounting cavities on both sides along its thickness direction, and the two plates are respectively accommodated in the corresponding mounting cavities. The cover plate is provided with fine-diameter holes corresponding to each of the cavities. The outer surfaces of the two cover plates are respectively covered with the porous sound-absorbing sheet.

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