Low-noise energy storage converter structure
By installing mufflers at the air inlet and outlet of the energy storage converter and installing sound insulation boards around it, the problem of excessive noise in the energy storage converter is solved, and low noise and good heat dissipation are achieved, and the environmental compliance and reliability of the equipment are improved.
Patent Information
- Application Number
- CN202510867847.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-08-15
AI Technical Summary
The noise generated by existing energy storage converters exceeds the standard during operation, affecting environmental compliance and equipment reliability, and it is difficult to take into account both the heat dissipation performance.
Install mufflers at the air inlet and outlet of the energy storage converter, sound insulation panels are installed around the cabinet, and a serrated cover and a modularly assembled muffler design is used, and sound-absorbing cotton is filled inside to reduce noise.
Effectively reduce noise by about 10dB, while maintaining good heat dissipation performance, meeting environmental protection requirements and improving equipment robustness.
Smart Images
Figure CN120498235A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a low-noise energy storage converter structure, belonging to the technical field of energy storage converters. Background Art
[0002] With the continuous development of grid technology and the large-scale integration of renewable energy into the grid, energy storage converters are playing an increasingly important role in power transmission and distribution. Because energy storage converters integrate multiple electronic components and operate at high power, they often generate significant heat and noise during operation.
[0003] Many countries and regions currently have stringent noise limits, which restricts the large-scale application of energy storage inverters. Therefore, how to effectively reduce the noise of the entire device while ensuring good heat dissipation has become a pressing issue.
[0004] Currently, noise from energy storage converters on the market primarily comes from mechanical vibration and electromagnetic noise generated by high-frequency switching devices, reactors, and cooling fans. In particular, the sudden current changes in high-frequency switching devices can cause harmonic noise. If large-scale energy storage converters are deployed near residential areas, the noise will inevitably affect the quality of life of nearby residents and, in serious cases, even violate local noise regulations (such as the EU Noise Directive or urban area noise standards). Therefore, noise reduction is both environmentally friendly and regulatory-compliant. Furthermore, the long-term presence of noise from vibration and electromagnetic harmonics generated by high-frequency switching can reduce equipment reliability, cause internal components to loosen and wear out, and shorten the converter's lifespan.
[0005] The present invention effectively reduces the noise generated by the equipment by introducing a new structural design, which not only meets environmental protection requirements but also improves the overall robustness of the energy storage converter. Summary of the Invention
[0006] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a low-noise energy storage converter structure; In order to achieve the above objectives / solve the above technical problems, the present invention is implemented by adopting the following technical solutions: A low-noise energy storage converter structure includes an energy storage converter cabinet, an air inlet muffler is installed at the air inlet of the energy storage converter cabinet, an air outlet muffler is installed at the air outlet, the energy storage converter cabinet is provided with a noise reduction door panel, and the energy storage converter cabinet is surrounded by sound insulation side sealing panels.
[0007] Optionally, the air inlet silencer includes a silencer cover, a silencer mesh cover is provided inside the silencer cover, the silencer mesh cover is connected to the silencer cover via a silencer riveting assembly, and the silencer riveting assembly is connected to a steel mesh plate.
[0008] Optionally, the muffler cover 1 is provided with a cover reinforcement rib connected to the muffler mesh cover 1, and the cover reinforcement rib is serrated.
[0009] Optionally, the muffler riveting assembly includes a muffler mesh cover four and a muffler mesh cover base plate, and sound-absorbing cotton is filled between the muffler mesh cover four and the muffler mesh cover base plate.
[0010] Optionally, the openings on the surface of the silencer mesh are in the shape of any one of rectangular, circular, square or hexagonal holes, wherein the opening rate is 20-30%, and the interior of the silencer mesh is filled with sound-absorbing cotton.
[0011] Optionally, the air outlet silencer includes a second silencer cover, a second silencer mesh cover and a mesh cover riveting assembly. The second silencer mesh cover is spaced apart in the second silencer cover, and the first mesh cover riveting assembly is arranged on the side of the second silencer cover. The air outlet silencer is provided with a second steel mesh plate through a steel mesh plate skeleton lining at the air outlet. The opening shape of the surface of the second silencer mesh cover is any one of rectangular, circular, square or hexagonal holes, the opening rate is 20~30%, and the interior is filled with sound-absorbing cotton.
[0012] Optionally, the mesh cover riveting component 1 includes a bottom plate bending part and a mesh cover riveting component 2, and sound-absorbing cotton is filled between the two.
[0013] Optionally, the skeleton lining structure of the steel wire mesh plate is in the shape of a mesh and is flush with the second silencer mesh cover.
[0014] Optionally, an arc-shaped rain cover is designed at the opening of the noise reduction door panel, and the opening shapes of the three surfaces of the internal sound-absorbing mesh cover are any one of rectangular, circular, square or hexagonal holes, with an opening rate of 20~30%. The interior is filled with sound-absorbing cotton, and the three sound-absorbing mesh covers are connected to the arc-shaped rain cover by rivets.
[0015] Optionally, the sound insulation side sealing plate is welded with a Japanese-shaped reinforcement rib, and a sound insulation board is pasted on the blank space inside the Japanese-shaped area.
[0016] Compared with the prior art, the present invention has the following beneficial effects: The main structure of the energy storage converter of the present invention does not need to be changed. Mufflers can be installed at the air inlet and outlet, and sound insulation boards can be attached to the cabinet body. The muffler of the present invention has little effect on the heat dissipation performance of the energy storage converter, and can ensure that the energy storage converter has good heat dissipation performance; The muffler of the present invention has a good noise reduction effect, with a noise reduction capacity of about 10dB. The energy storage converter as a whole has a low noise level and can be used in working conditions with high noise requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1It is a schematic structural diagram of the energy storage converter of the present invention; Figure 2 This is a front structural diagram of the air inlet muffler of the present invention; Figure 3 This is a schematic diagram of the structure of the air inlet silencer mesh cover of the present invention; Figure 4 It is a schematic diagram of the back and internal structure of the air inlet muffler of the present invention; Figure 5 This is a schematic structural diagram of the muffler mesh cover riveting assembly of the present invention; Figure 6 This is a front structural diagram of the air outlet muffler of the present invention; Figure 7 This is a schematic structural diagram of the air outlet muffler mesh cover riveting assembly of the present invention; Figure 8 It is a schematic diagram of the back structure of the air outlet muffler of the present invention; Figure 9 It is a schematic diagram of the noise reduction door panel structure of the present invention; Figure 10 It is a schematic diagram of the side sealing plate structure of the present invention; In the figure: 1. Cabinet; 2. Air inlet muffler; 3. Air outlet muffler; 4. Noise reduction door panel; 5. Side sealing panel; 6. Cover reinforcement ; 7. Silencer mesh cover one; 8. Silencer cover shell one; 9. Steel wire mesh plate one; 10. Silencer riveting assembly; 11. Silencer mesh cover two; 12. Silencer cover shell two; 13. Mesh cover riveting assembly one; 14. Bottom plate bending part; 15. Mesh cover riveting assembly two; 16. Steel wire mesh plate two; 17. Curved rain cover; 18. Silencer mesh cover three; 19. Japanese-style reinforcement rib; 20. Sound insulation board; 21. Silencer mesh cover four; 22. Silencer mesh cover bottom plate; 23. L-shaped fixing parts; 24. Steel wire mesh plate skeleton lining. DETAILED DESCRIPTION
[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.
[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.
[0021] like Figure 1 As shown, it is a schematic diagram of the structure of the energy storage converter of the present invention. The front and rear top of the energy storage converter cabinet 1 are air inlets, and two air inlet silencers 2 are installed by screws. The front and rear bottom of the cabinet are air outlets, and four air outlet silencers 3 are installed by screws. The front and rear cabinet doors of the cabinet are installed with noise reduction door panels 4 by means of hinges, and four sound insulation side sealing panels 5 are fixed by screws on the left and right directions of the cabinet.
[0022] Combine Figure 2 Schematic diagram of the front structure of the air inlet muffler and Figure 3Schematic diagram of the air inlet silencer mesh structure. The cover reinforcement rib 6 is a zigzag structure and is fixed to the silencer cover 8 by welding. The main structure of the silencer mesh 7 is a U-shaped sheet metal bending part. In order to prevent the mesh from affecting the noise reduction effect of the sound-absorbing cotton, the surface needs to be arrayed with holes. The shape can be rectangular, or circular, square or hexagonal. The total opening rate is 20-30%, which can not only ensure the good sound absorption effect of the sound-absorbing cotton, but also wrap the sound-absorbing cotton well. The silencer mesh 7 is composed of two pairs of rectangular structures with a width of about 50mm. The interior is filled with sound-absorbing cotton. One end of the silencer mesh 7 is installed in an array on the protruding teeth of the cover reinforcement rib 6 by rivets. The spacing between the two teeth is about 90mm. The zigzag flow cross-section design can effectively increase the flow area of the entire silencer. Compared with the traditional screw fastening method, the rivet connection can effectively improve the assembly efficiency.
[0023] like Figure 4 As shown in the figure, it is a schematic diagram of the back and internal structure of the air inlet muffler of the present invention. Both ends of the muffler mesh cover 7 are riveted to the protruding teeth of the cover reinforcement rib 6 and the muffler cover 8 by rivets. The wire mesh plate 9 is installed on the muffler cover 8 and the muffler mesh cover riveting assembly 10 by screws to facilitate on-site disassembly and replacement. The area of the wire mesh plate 9 is 1 / 3 to 1 / 2 of the installation surface area of the entire muffler cover 8, which can effectively ensure that the energy storage converter has a good heat dissipation effect and the muffler as a whole can ensure a good noise reduction.
[0024] like Figure 5 The figure shows a schematic diagram of the structure of the muffler mesh riveting assembly of the present invention. The muffler mesh 4 21 is a U-shaped sheet metal bending part. In order to prevent the mesh from affecting the noise reduction effect of the sound-absorbing cotton, an array of holes is required on the surface. The shape can be rectangular, or circular, square or hexagonal. The total opening rate is 20-30%, which can not only ensure the good sound absorption effect of the sound-absorbing cotton, but also can wrap the sound-absorbing cotton intact. The muffler mesh bottom plate 22 is a sheet metal bending part with all four sides bent toward one side. The muffler mesh 4 21 and the muffler mesh bottom plate 22 are connected together by rivets, and rivet installation holes are reserved on the left and right sides. After the assembly is riveted, it is connected to the muffler cover 1 8 by rivets, which can realize the modular assembly of the muffler and improve the assembly efficiency.
[0025] like Figure 6The figure shows a schematic diagram of the front structure of the air outlet silencer of the present invention, wherein the air outlet silencer 3 comprises a silencer cover 12, a silencer mesh cover 11 and a mesh cover riveting assembly 13, wherein the silencer mesh cover 11 is arranged at intervals in the silencer cover 12, and the mesh cover riveting assembly 13 is arranged on the side of the silencer cover 12, and a steel mesh plate 16 is provided at the air outlet of the air outlet silencer 3, and the opening shape of the surface of the silencer mesh cover 11 is any one of rectangular, circular, square or hexagonal holes, with an opening rate of 20-30%, and the interior is filled with sound-absorbing cotton.
[0026] The main structure of the silencer mesh cover 2 (11) is similar to that of the silencer mesh cover 1 (7), both being U-shaped sheet metal bent parts with an array of holes on the surface. The shapes can be rectangular, circular, square, or hexagonal, with a total opening ratio of 20-30%. The silencer mesh covers 2 (11) are assembled into a rectangular structure with a width of approximately 30mm and filled with sound-absorbing cotton. The spacing between the silencer mesh covers 2 (11) is approximately 35mm, and they are connected to the silencer cover 2 (12) by welding. The L-shaped fixing member 23 is installed on the silencer cover 2 (12) by rivets, with a reserved mounting hole at the other end. It is fixed to the container floor with screws to enhance the reliability of the silencer installation.
[0027] like Figure 7 The figure shows a schematic diagram of the structure of the mesh cover riveting assembly of the air outlet silencer of the present invention. The mesh cover riveting assembly 13 includes a bottom plate bending part 14 and a mesh cover riveting assembly 2 15, and sound-absorbing cotton is filled between the two. The mesh cover riveting assembly 2 15 is a sheet metal bending part with three sides bent in the same direction. In order to prevent the mesh cover from affecting the noise reduction effect of the sound-absorbing cotton, an array of holes is required on the surface. The shape can be rectangular, or it can be a circular hole, a square hole or a hexagonal hole. The total opening rate is 20-30%, which can not only ensure the good sound absorption effect of the sound-absorbing cotton, but also can wrap the sound-absorbing cotton intact. The bottom plate bending part 14 is a sheet metal bending part with three sides bent in the same direction. There are no openings on the surface. The mesh cover riveting assembly 2 15 and the bottom plate bending part 14 are connected together by rivets, and screw installation holes are reserved on the left and right sides. After the assembly is riveted, it is connected to the muffler cover 2 12 by screws, which can realize the modular assembly of this muffler and improve assembly efficiency.
[0028] like Figure 8 As shown, it is a schematic diagram of the back structure of the air outlet silencer of the present invention, wherein: the wire mesh plate 16 is assembled in front of the silencer cover 12 by means of screws, and the skeleton lining structure of the wire mesh plate 11 is in the shape of a mesh and is kept flush with the silencer mesh cover 11 to avoid affecting ventilation and heat dissipation.
[0029] Figure 9This is a schematic diagram of the noise reduction door panel structure. A curved rain cover 17 and a sound-absorbing mesh cover 18 are designed at the opening of the noise reduction door panel. The main structure is an L-shaped sheet metal bending part. To prevent the mesh cover from affecting the noise reduction effect of the sound-absorbing cotton, an array of holes is required on the surface. The shape can be rectangular, circular, square, or hexagonal. The total opening rate is 20-30%, which can not only ensure the good sound absorption effect of the sound-absorbing cotton, but also can wrap the sound-absorbing cotton intact. The sound-absorbing mesh cover 18 is a rectangular structure composed of two pairs. The width is about 50mm and the interior is filled with sound-absorbing cotton. The array spacing of the sound-absorbing mesh cover 18 is about 90mm. The bent short side of the sound-absorbing mesh cover 18 is connected to the curved rain cover 17 by rivets. like Figure 10 As shown in FIG. 1 , a schematic diagram of the side sealing plate structure of the present invention is shown. The cabinet body is surrounded by sound-insulating side sealing plates 4 . The sound-insulating side sealing plates 4 are welded with Japanese-shaped reinforcing ribs 19 , and sound-insulating plates 20 are pasted in the blank space inside the Japanese-shaped plate to enhance the sound insulation performance of the side sealing plates.
[0030] In summary, the main structure of the energy storage converter does not need to be significantly changed. Mufflers can be installed at the air inlet and outlet, and sound insulation panels can be attached to the cabinet. The muffler has little effect on the heat dissipation performance of the energy storage converter, which can ensure that the energy storage converter has good heat dissipation performance. The muffler of the present invention has a good noise reduction effect, with a noise reduction capacity of about 10dB, so that the energy storage converter has a lower noise level as a whole, and can be used in working conditions with high noise requirements.
[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.
Claims
1. A low-noise energy storage converter structure, characterized in that: The energy storage converter cabinet (1) comprises an energy storage converter cabinet (1), an air inlet silencer (2) is installed at the air inlet of the energy storage converter cabinet (1), an air outlet silencer (3) is installed at the air outlet, the energy storage converter cabinet (1) is provided with a noise reduction door panel (4), and the energy storage converter cabinet (1) is surrounded by sound insulation side sealing panels (5).
2. The low-noise energy storage converter structure according to claim 1, characterized in that: The air inlet silencer (2) comprises a silencer cover (8), a silencer mesh cover (7) is provided inside the silencer cover (8), the silencer mesh cover (7) is connected to the silencer cover (8) via a silencer riveting assembly (10), and the silencer riveting assembly (10) is connected to a steel mesh plate (9).
3. The low-noise energy storage converter structure according to claim 2, characterized in that: The muffler cover (8) is provided with a cover reinforcement rib (6) connected to the muffler mesh cover (7), and the cover reinforcement rib (6) is sawtooth-shaped.
4. The low-noise energy storage converter structure according to claim 2, characterized in that: The muffler riveting assembly (10) comprises a muffler mesh cover four (21) and a muffler mesh cover bottom plate (22), and sound-absorbing cotton is filled between the muffler mesh cover four (21) and the muffler mesh cover bottom plate (22).
5. The low-noise energy storage converter structure according to claim 2, characterized in that: The opening shape of the surface of the silencer mesh cover (7) is any one of rectangular, circular, square or hexagonal holes, wherein the opening rate is 20-30%, and the interior of the silencer mesh cover (7) is filled with sound-absorbing cotton.
6. The low-noise energy storage converter structure according to claim 1, characterized in that: The air outlet silencer (3) comprises a silencer cover (12), a silencer mesh cover (11) and a mesh cover riveting assembly (13), wherein the silencer mesh cover (11) is arranged in a spaced manner inside the silencer cover (12), and the mesh cover riveting assembly (13) is arranged on the side of the silencer cover (12). The air outlet of the air outlet silencer (3) is provided with a wire mesh plate (16) through a wire mesh plate frame lining, and the opening shape of the surface of the silencer mesh cover (11) is any one of rectangular, circular, square or hexagonal holes, with an opening rate of 20-30%, and the interior is filled with sound-absorbing cotton.
7. The low-noise energy storage converter structure according to claim 6, characterized in that: The mesh cover riveting assembly 1 (13) comprises a bottom plate bending part (14) and a mesh cover riveting assembly 2 (15), with sound-absorbing cotton filled between the two.
8. The low-noise energy storage converter structure according to claim 6, characterized in that: The skeleton lining structure of the steel wire mesh plate (11) is in the shape of a mesh and is kept flush with the second silencer mesh cover (11).
9. The low-noise energy storage converter structure according to claim 1, characterized in that: The opening of the noise reduction door panel (4) is designed with an arc-shaped rain cover (17), and the opening shape of the surface of the internal sound-absorbing mesh cover (18) is any one of rectangular, circular, square or hexagonal holes, with an opening rate of 20-30%. The interior is filled with sound-absorbing cotton, and the sound-absorbing mesh cover (18) is connected to the arc-shaped rain cover (17) by rivets.
10. The low-noise energy storage converter structure according to claim 1, characterized in that: The sound insulation side sealing plate (5) is welded with a Japanese-shaped reinforcement rib (19), and a sound insulation plate (20) is pasted on the blank space inside the Japanese-shaped area.