Noise reduction assembly and energy storage device

Abstract

The application relates to the field of noise reduction of energy storage equipment, and specifically provides a noise reduction assembly and energy storage equipment, aiming to solve the problem of how to reduce the noise of the energy storage equipment while considering the heat exchange performance of the cooling unit. To this end, the noise reduction assembly comprises an air outlet main body and a first sound elimination structure, the inside of the air outlet main body is provided with a ventilation cavity, the air outlet main body is provided with a first air inlet on the side of the ventilation cavity, and the air outlet main body is provided with a second air inlet on the top of the ventilation cavity, so that the airflow can be discharged in sequence through the first air inlet, the ventilation cavity and the second air inlet, and the first sound elimination structure is arranged in the ventilation cavity.

Description

Technical Field

[0001] This application relates to the field of noise reduction in energy storage devices, specifically providing a noise reduction component and an energy storage device. Background Technology

[0002] Based on user needs, the energy storage market is currently divided into three main product categories: large-scale energy storage, commercial and industrial energy storage, and residential energy storage. Among these, the large-scale energy storage market is dominated by containerized energy storage equipment.

[0003] Containerized energy storage systems mainly consist of a battery system, a battery management system, a power combiner (conversion) system, a fire protection system, a monitoring system, and a thermal management system. Among these, the key equipment in the thermal management system is the cooling unit (e.g., an air-cooled liquid-cooled unit). Due to the high integration density of current large-scale energy storage systems, the thermal management system experiences a heavy load, resulting in high noise levels during operation, far exceeding human tolerance. This causes significant disturbance to project maintenance personnel and residents near the energy storage site, impacting the application of the energy storage equipment. Therefore, effective measures are needed to reduce the noise level of the cooling unit to improve the applicability of containerized energy storage products.

[0004] To address noise reduction needs, there are currently two main technical approaches. The first approach focuses on noise reduction design for the cooling unit itself; the second approach involves adding external noise suppression devices to the cooling unit. For the first approach, the main sources of noise in the cooling unit include water pump noise, compressor noise, electromagnetic noise from electrical control components, and fan noise. The fan noise at full speed contributes the most to the noise. Fan noise increases with speed, so limiting the fan speed can reduce noise. However, this method reduces the cooling capacity of the unit, thus having significant limitations. The second approach involves designing sound-absorbing louvers at the air outlet of the cooling unit. These louvers allow air to escape from the unit, and the perforated panels filled with sound-absorbing cotton reduce noise. However, noise testing is conducted on the air outlet surface; while the louver design promotes airflow, the noise reduction effect is generally limited. Furthermore, since the air inlet and outlet of the energy storage device are close together, some of the hot air blown out of the outlet of the above two technical routes will re-enter the air inlet, resulting in a high air inlet temperature and reducing the heat exchange performance of the cooling unit.

[0005] Accordingly, there is a need in the field for a new noise reduction component and energy storage device to solve the above problems. Utility Model Content

[0006] This application aims to solve the aforementioned technical problem, namely, how to reduce the noise of energy storage equipment while also taking into account the heat exchange performance of the cooling unit.

[0007] In a first aspect, this application provides a noise reduction component, the noise reduction component including an air outlet body, the air outlet body having a ventilation cavity inside, the air outlet body having a first air outlet on the side of the ventilation cavity, and the air outlet body having a second air outlet on the top of the ventilation cavity, so that airflow can be discharged after passing through the first air outlet, the ventilation cavity and the second air outlet in sequence; and a first silencing structure disposed in the ventilation cavity.

[0008] In the optional technical solutions of the above-mentioned noise reduction component, the noise reduction component further includes a rain cover and a bracket. The rain cover is fixed to the air outlet body by the bracket. The rain cover is used to block at least part of the second air outlet and leaves a gap with the second air outlet.

[0009] In the above-mentioned optional technical solutions for noise reduction components, there are multiple first silencing structures, each of which is configured as a first silencing plate. Each first silencing plate is disposed in the ventilation cavity, and an air outlet channel is formed between adjacent first silencing plates. The first air outlet communicates with the second air outlet through the air outlet channel.

[0010] In the optional technical solutions of the above noise reduction components, the windward surface of the first sound-absorbing plate has a chamfer; and / or the first sound-absorbing plate is detachable.

[0011] In the above-mentioned optional technical solutions for noise reduction components, the thickness of the first sound-absorbing plate gradually increases from one side of the first air vent to the other side opposite to the first air vent.

[0012] In the above-mentioned optional technical solutions for noise reduction components, the first sound-absorbing plate is a wedge-shaped plate.

[0013] In the optional technical solutions of the above noise reduction components, a drain hole is provided on the bottom wall of the air outlet body, and the drain hole communicates with the ventilation cavity.

[0014] In the optional technical solutions of the above-mentioned noise reduction component, the noise reduction component further includes an installation body, the installation body having an upper installation frame and a lower installation frame, the opening of the upper installation frame being connected to the first air vent, and the opening of the lower installation frame being provided with an openable and closable door.

[0015] In the optional technical solutions of the above noise reduction components, the upper part of the door has a second sound-absorbing structure, the lower part of the door is provided with ventilation holes, and the area of ​​the upper part is larger than the area of ​​the lower part.

[0016] In the optional technical solutions of the above-mentioned noise reduction component, the noise reduction component further includes an air inlet body, the air inlet body having a bent air inlet channel, the bent air inlet channel being at least partially formed by a sound-absorbing structure.

[0017] In the optional technical solutions of the above noise reduction components, the air intake body has an air intake cavity, and the air intake cavity is provided with a plurality of second sound-absorbing plates. The bent air intake channel is formed by adjacent second sound-absorbing plates and the air intake body, and the second sound-absorbing plates are detachable.

[0018] On the other hand, this application also provides an energy storage device, which includes a housing and a noise reduction component as described in any of the above embodiments. The housing has an air inlet and an air outlet in the housing area for accommodating a cooling unit, and the air outlet is connected to a first air outlet of the noise reduction component.

[0019] In the optional technical solutions of the above-mentioned energy storage device, the ventilation cavity of the noise reduction component is arranged vertically; and / or the air inlet is located on the first side wall of the box, and the air outlet is located on the second side wall of the box, wherein the first side wall and the second side wall are different side walls of the box.

[0020] On the other hand, this application also provides an energy storage device, which includes a housing and a noise reduction component as described in any of the above embodiments. The housing has an air inlet and an installation port in the housing area for accommodating a cooling unit. The mounting body of the noise reduction component covers the installation port so that the opening of the upper mounting frame constitutes an air outlet. An electronic control component is provided at the lower part of the housing area so that the electronic control component can be operated through the opening of the lower mounting frame when the door of the noise reduction component is opened.

[0021] On the other hand, this application also provides an energy storage device, which includes a housing and a noise reduction component as described in any of the above embodiments. The housing has an air inlet and an air outlet in the housing area for accommodating a cooling unit. The air outlet is connected to a first air outlet of the noise reduction component, and the air inlet is connected to the bent air inlet channel.

[0022] Those skilled in the art will understand that the noise reduction component of this application includes an air outlet body and a first silencing structure. The air outlet body has a ventilation cavity inside, a first air outlet on the side of the ventilation cavity, and a second air outlet on the top of the ventilation cavity, so that the airflow can be discharged after passing through the first air outlet, the ventilation cavity and the second air outlet in sequence. The first silencing structure is located in the ventilation cavity.

[0023] The advantages of the above configuration are as follows: When the noise reduction component is applied to the energy storage device, the hot air carrying noise, after being discharged from the air outlet on the casing, enters the first air inlet located on the side of the ventilation cavity. The airflow is forced to undergo a sudden change in direction (bending), which strongly reflects and scatters the sound waves, blocking the straight propagation path of the noise and effectively consuming some of its energy. Subsequently, the airflow enters the ventilation cavity of the main air outlet, where the first silencing structure absorbs and attenuates the residual noise after the initial bending, effectively reducing the noise level at the measurement point of interest. The hot airflow entering the ventilation cavity is discharged through the second air inlet at the top, thus guiding the airflow upward and finally discharging it into the upper atmosphere through the second air inlet. This fully utilizes the physical property of hot air naturally rising, allowing the discharged high-temperature gas to diffuse into higher altitudes and away from the equipment casing, thereby greatly reducing the possibility of the hot air sinking and being directly re-inhaled by the adjacent low-level air inlet, thus ensuring the heat exchange performance of the cooling unit. Attached Figure Description

[0024] The preferred embodiments of this application are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of the energy storage device of this application after the noise reduction components have been removed; Figure 2 This is a schematic diagram of the structure of the energy storage device of this application after adding noise reduction components (I); Figure 3 This is a structural schematic diagram of the air outlet main body and the mounting main body of the noise reduction component of this application; Figure 4 This is a schematic diagram (II) of the structure of the energy storage device of this application after adding noise reduction components; Figure 5 This is a partial structural diagram of the air intake body of the noise reduction component of this application.

[0025] Explanation of reference numerals in the attached figures: 100 - Housing; 110 - Air inlet; 120 - Mounting port; 210 - Air outlet body; 211 - Ventilation cavity; 212 - First air outlet; 213 - Second air outlet; 220 - First silencing structure; 300 - Mounting body; 310 - Upper mounting frame; 311 - Air outlet; 320 - Lower mounting frame; 330 - Door; 331 - Second silencing structure; 332 - Ventilation hole; 410 - Air inlet body; 411 - First opening; 412 - Second opening; 420 - Second silencing plate; 421 - Air inlet channel; 500 - Cooling unit; 610 - Rain cover; 620 - Bracket. Detailed Implementation

[0026] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0027] It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a 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 application according to the specific circumstances. Furthermore, terms such as "upper" and "lower," indicating direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation or be constructed in a specific orientation; therefore, it should not be construed as a limitation of this application.

[0028] like Figure 1 As shown, the energy storage device of this application includes a housing 100, an energy storage device, a fan, and a cooling unit 500. The housing 100 has a first receiving area and a second receiving area. The energy storage device (such as a battery pack) is located in the first receiving area, and the cooling unit 500 is located in the second receiving area. The cooling unit 500 is used to dissipate heat from the energy storage device. The housing 100 has an air inlet 110 on the first side wall of the second receiving area and an air outlet 311 on the second side wall of the second receiving area. The first side wall and the second side wall are different side walls. The fan of the cooling unit 500 is located in the second receiving area and is arranged opposite to the air outlet 311. The fan is used to guide the airflow from the air inlet 110 into the second receiving area, and after passing through the cooling unit 500, it is discharged from the air outlet 311. (The main noise source in the energy storage device is the cooling unit 500. The noise source distribution of the cooling unit 500 itself is uneven, and the location of the largest noise source is at the fan.) During the operation of the cooling unit 500, cold air enters the cooling unit 500 through the air inlet 110 for heat exchange, and the heated air is blown out through the air outlet 311. The cooling unit 500 can be an air-cooled liquid-cooled unit (a high-efficiency refrigeration system that uses circulating liquid to absorb heat from the equipment and discharges it into the atmosphere through an air-cooled radiator). Air-cooled liquid-cooled unit technology is relatively mature, and its specific structure will not be described in detail here.

[0029] The lower half of the second accommodating area of ​​this application is the electrical cabinet section. The electrical control components of the cooling unit 500 are all located inside the electrical cabinet. After opening the cabinet door 330, the cooling unit 500 can be controlled and operated through the operation panel of the electrical control components.

[0030] To address the challenge of reducing noise from energy storage equipment while maintaining the heat exchange performance of the 500-ton cooling unit, such as... Figures 2 to 4 As shown, this application provides a noise reduction component that can be applied to the energy storage device described above. The housing 100 of the energy storage device has an air inlet 110 and an air outlet 311 in the housing area for accommodating the cooling unit 500. The noise reduction component is located outside the housing 100 and includes an air outlet body 210 and a first silencing structure 220. The air outlet body 210 has a ventilation cavity 211 inside. The air outlet body 210 has a first air vent 212 on the side of the ventilation cavity 211. The first air vent 212 is suitable for connecting to the air outlet 311. The air outlet body 210 has a second air vent 213 on the top of the ventilation cavity 211 so that the airflow discharged from the air outlet 311 can be discharged after passing through the first air vent 212, the ventilation cavity 211 and the second air vent 213 in sequence. The first silencing structure 220 is located in the ventilation cavity 211.

[0031] The advantages of the above configuration are as follows: After the hot air carrying noise is discharged from the air outlet 311 on the housing 100, it enters the first air inlet 212 located on the side of the ventilation cavity 211. The airflow is forced to undergo a sudden change in direction (bending), which produces a strong reflection and scattering effect on the sound waves, blocking the straight propagation path of the noise and effectively consuming some of its energy. Subsequently, the airflow enters the ventilation cavity 211 of the air outlet body 210, where the first sound-absorbing structure 220 absorbs and attenuates the residual noise after the initial bending, effectively reducing the noise level at the measurement point of interest (e.g., the location where the height of the housing 100 is 1.5 meters to 1.8 meters). The hot air entering the ventilation cavity 211 will be discharged through the second air vent 213 at the top, which can guide the airflow upward and finally discharge it to the upper atmosphere through the second air vent 213. This makes full use of the physical property of hot air naturally rising, so that the discharged high-temperature gas diffuses to a higher altitude and away from the equipment box 100, thereby greatly reducing the possibility that the hot air will be directly re-inhaled by the nearby low-level air inlet 110 after sinking, thus ensuring the heat exchange performance of the cooling unit 500.

[0032] As one possible implementation, the ventilation cavity 211 is arranged vertically, allowing the hot airflow to reach the top second air vent 213 more quickly and smoothly and be discharged upwards. In addition, the ventilation cavity 211 of this application can be higher than the top of the housing 100, thereby enabling noise to be transmitted to a location far away from the measuring point and hot air to be further away from the air inlet 110.

[0033] As one possible implementation, the noise reduction component also includes a rain shield 610 and a bracket 620. The rain shield 610 is fixed to the air outlet body 210 by the bracket 620. The rain shield 610 is used to block at least part of the second air vent 213 and leaves a gap between it and the second air vent 213 to ensure smooth exhaust of hot air. Preferably, the rain shield 610 can completely cover the second air vent 213, that is, the rain shield 610 is located directly above the second air vent 213 and its area is greater than or equal to that of the second air vent 213. In other words, both the rain shield 610 and the second air vent 213 are projected onto the horizontal plane, and the projection of the second air vent 213 will fall into the projection of the rain shield 610.

[0034] This application does not limit the specific form of the rain cover 610, which may include an inclined first top plate and a second top plate, with the tops of the first top plate connected to the tops of the second top plate to form a sloping roof structure (i.e., an inverted V-shaped structure). However, this is not restrictive; the rain cover 610 may also be an arc-shaped roof or a flat plate arranged horizontally, as long as it can prevent rainwater from entering the second vent 213. Adjustments to its specific form do not deviate from the principles of this application and are all within the scope of protection of this application. Furthermore, this application does not limit the number of brackets 620; there may be one or more. Specifically, for example, if there are two brackets 620, they may be respectively arranged on opposite sides of the rain cover 610 to improve installation stability.

[0035] As one possible implementation, the bottom wall of the air outlet body 210 is provided with a drain hole, which communicates with the ventilation cavity 211. In this way, even if water accumulates and enters the ventilation cavity 211, it can flow out through the bottom drain hole.

[0036] In one possible implementation, there are multiple first silencing structures 220, each configured as a first silencing plate. Each first silencing plate is located within a ventilation cavity 211, and an air outlet channel is formed between adjacent first silencing plates. The first air outlet 212 communicates with the second air outlet 213 through the air outlet channel. The air outlet channel formed between adjacent first silencing plates can divert and guide the airflow entering the ventilation cavity 211, ensuring that the airflow makes full contact with the first silencing plates as it passes through, thereby rapidly attenuating noise using the sound absorption characteristics of the first silencing plates.

[0037] Preferably, the first sound-absorbing plate is detachable, allowing for flexible disassembly and adjustment according to the project's noise reduction requirements. This application does not limit the specific disassembly method; for example, the first sound-absorbing plate can be installed in the ventilation cavity 211 by means of snap-fit, bolt connection, or abutment.

[0038] In one possible implementation, the first sound-absorbing plate has a receiving cavity containing a sound-absorbing component. The first sound-absorbing plate has multiple mesh openings communicating with the receiving cavity. The sound-absorbing component can be sound-absorbing sponge, glass wool, polyester fiber cotton, rock wool, etc. However, this is not limiting. As long as the first sound-absorbing plate can perform sound absorption, its specific structural form can be adjusted. For example, the first sound-absorbing plate can absorb sound solely through the friction and damping effect of the mesh openings or sound-absorbing material on the sound waves, and it may not have an internal receiving cavity or need to be filled with sound-absorbing material.

[0039] As one possible implementation, the windward surface of the first sound-absorbing plate has a chamfer, which can be a rounded corner or a straight chamfer. The chamfered structure guides airflow along a smoothly transitioning slope, preventing direct impact of the airflow on the first sound-absorbing plate, thereby reducing secondary noise caused by airflow disturbance, while also reducing wind resistance to ensure ventilation efficiency and optimize airflow performance. Possibly, the thickness of the first sound-absorbing plate gradually increases from one side of the first air outlet 212 to the opposite side. It is understood that the gradual increase in thickness from one side of the first air outlet 212 to the opposite side can be a wavy or linear increase in thickness in this direction, as long as the overall trend of the thickness of the first sound-absorbing plate is an increase. For example, the first sound-absorbing plate is configured as a wedge-shaped plate with the narrow end of the wedge located on one side of the first air outlet 212. This configuration ensures smoother airflow within the ventilation cavity 211, maintaining high ventilation efficiency. In addition, in terms of noise control, the wedge-shaped plate design makes the cross-section of the air outlet channel gradually change, which allows sound waves of different frequencies to produce more complex reflections and scattering when passing through the channel, extending the propagation path and attenuation time of sound waves in the soundproofing structure and improving the noise treatment effect.

[0040] In one possible implementation, the lower part of the second accommodating area is provided with an electronic control component. The noise reduction assembly also includes a mounting body 300, which has an upper mounting frame 310 and a lower mounting frame 320. The second side wall of the housing 100 is provided with a mounting opening 120, and the mounting body 300 covers the mounting opening 120. The opening of the upper mounting frame 310 is configured as an air outlet 311, and the opening of the lower mounting frame 320 is provided with an openable and closable door 330 so that the electronic control component, such as an operation panel for operating the electronic control component, can be operated through the opening of the lower mounting frame 320 when the door 330 is open. This application does not limit the way the mounting body 300 is connected to the mounting opening 120. For example, the periphery of the mounting body 300 may be inserted into the inner wall of the mounting opening 120, or the periphery of the mounting body 300 may be connected to the periphery of the mounting opening 120 by bolts or other connecting parts. These possible connection methods do not deviate from the principles of this application and are all within the protection scope of this application.

[0041] The mounting body 300 is installed as a whole on the mounting port 120 on the side wall of the enclosure 100. The opening of the upper mounting frame 310 of the mounting body 300 serves as the air outlet 311, which is connected to the air outlet body 210, achieving a smooth connection of the noise reduction function. A door 330 is provided at the opening of the lower mounting frame 320, which is specifically used to open and close the opening of the lower mounting frame 320 to operate the electronic control components or to keep the enclosure 100 sealed. In this way, the spatial conflict that might occur if the door 330 and the noise reduction components were set up independently is avoided, and the overall layout is more standardized.

[0042] As one possible implementation, the upper part of the door 330 has a second sound-absorbing structure 331, and the lower part of the door 330 has a ventilation hole 332 communicating with the receiving area. The ventilation hole 332 can be a mesh ventilation hole 332, and the area of ​​the upper part is larger than that of the lower part. In order to improve the heat exchange effect of the cooling unit 500, and considering the noise distribution characteristics of the cooling unit 500, namely that the main noise source is the air outlet 311 area, which is far from the bottom of the cooling unit 500, a ventilation hole 332 is opened in the lower part of the door 330, which occupies a smaller area, to further optimize the airflow capacity after the addition of noise reduction components. At the same time, a second sound-absorbing structure 331 is set in the upper part to reduce noise in this part. The second sound-absorbing structure 331 can have a receiving cavity, in which a sound-absorbing component is provided. The second sound-absorbing structure 331 has multiple mesh holes communicating with the receiving cavity. The sound-absorbing component can be sound-absorbing sponge, glass wool, polyester fiber wool, rock wool, etc. However, this is not a limitation. As long as the second silencing structure 331 can perform silencing, its specific structural form can be adjusted. For example, the second silencing structure 331 can silencing sound waves by using mesh or silencing material to perform friction and damping effects. It may not have a cavity inside and may not need to be filled with silencing material.

[0043] As one possible implementation, the noise reduction component also includes an air inlet body 410, which has a bent air inlet channel 421, at least partially formed by a sound-absorbing structure. Possibly, such as Figure 5 As shown, and refer to Figure 1 and Figure 2The air intake body 410 has an air intake cavity, within which multiple second sound-absorbing plates 420 are installed. A bent air intake channel 421 is formed by adjacent second sound-absorbing plates 420 and the air intake body 410. More specifically, the air intake body 410 has a first opening 411 and a second opening 412 communicating with the air intake cavity on opposite sides of the air intake cavity. Each second sound-absorbing plate 420 is located within the air intake cavity, and a bent air intake channel 421 is formed between adjacent second sound-absorbing plates 420. The first opening 411 communicates with the second opening 412 through the air intake channel 421, and the second opening 412 is connected to the air inlet 110, allowing external airflow to sequentially enter the receiving area through the first opening 411, the air intake channel 421, and the second opening 412. The structure of the second sound-absorbing plate 420 can be the same as that of the first sound-absorbing plate, such as a perforated plate with embedded sound-absorbing cotton, etc., which will not be described in detail here. In addition, for ease of installation, an outward flange can be provided at the second opening 412 so that the air inlet body 410 can be connected to the periphery of the air inlet 110 via the outward flange (such as by bolts and / or clips).

[0044] It should be noted that the specific form of the bent air inlet channel 421, which is at least partially composed of a sound-absorbing structure, described above is merely exemplary, and its specific form can be adjusted. For example, the bent air inlet channel 421 can be directly formed in the air inlet body 410, and at least part of the inner wall of the bent air inlet channel 421 can have sound-absorbing material, thereby forming a sound-absorbing structure. These possible adjustments do not deviate from the principle of this utility model and are all within the protection scope of this utility model.

[0045] The number of air inlets 110 can be one or more. When there are multiple air inlets 110, each air inlet 110 can be distributed vertically at intervals, and each air inlet 110 is provided with an air intake body 410.

[0046] To adjust the number of second silencers 420 according to the actual noise reduction requirements of the project, each second silencer 420 can be detachable. This application does not limit the specific implementation of the detachable second silencer 420; for example, the second silencer 420 can be directly snapped or bolted into the air inlet cavity. Multiple second silencers 420 can include a first part, a second part, and a third part. The first part has multiple first silencers, each including a first segment and a second segment. The first segment is bent relative to the second segment. The first silencers in the first part are arranged vertically side-by-side at intervals, forming a bent air inlet channel 421 between adjacent first silencers. The first silencers in the second part can be located above the first silencers in the first part, such as at the top of the air inlet cavity, including a first inclined plate and a second inclined plate. The first inclined plate is opposite to the first segment, and the second inclined plate is opposite to the second segment, forming a bent air inlet channel 421 with the uppermost first silencer in the first part. The first silencing plate of the third part can be set as a triangular structure, located below the first silencing plate of the first part, such as at the bottom of the air inlet cavity. The tip of the triangular structure is set to correspond to the bend of the first inclined plate and the second inclined plate, so as to form a bent air inlet channel 421 with the first silencing plate at the bottom of the first part.

[0047] It should be noted that the above description is merely illustrative. As long as a bent air inlet channel 421 is formed between adjacent second sound-absorbing plates 420, the specific form of the second sound-absorbing plate 420 can be adjusted. For example, if the two sides of the second sound-absorbing plate 420 in the thickness direction are wavy, it is also possible to form a bent air inlet channel 421 between adjacent second sound-absorbing plates 420. These possible adjustments do not deviate from the principle of this application and are all within the protection scope of this application.

[0048] When external air flows through the air intake body 410, the resulting airflow noise and the noise generated by the operation of the internal equipment of the cooling unit 500 are absorbed by the second sound-absorbing plate 420, thereby reducing noise. At the same time, the design of the bent air intake channel 421 increases the sound absorption area and enhances the noise reduction effect, while maintaining a smooth air intake channel 421 and reducing obstruction to airflow.

[0049] In summary, this application has the following advantages: 1) The noise control level is good. The sound pressure level of the cooling unit was measured at 500 full load. After the noise reduction components were installed, the sound pressure level at the measuring point dropped by more than 10 dB(A). 2) The heat exchange performance remains good. The noise reduction components have little impact on the heat exchange performance of the 500 cooling unit and can still meet the thermal management performance requirements of the energy storage equipment. 3) Excellent operation and maintenance performance; the structural design takes operation and maintenance into consideration, and the addition of noise reduction components will not affect equipment operation and maintenance. 4) Avoiding hot air recirculation is beneficial to improving the heat exchange performance of the 500 cooling unit.

[0050] It should be noted that the above embodiments are only used to illustrate the principles of this application and are not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can adjust the above structure so that this application can be applied to more specific application scenarios.

[0051] For example, as an alternative implementation, at least one of the following components can be omitted: rain cover 610, second silencing structure 331, mounting body 300, and air inlet body 410. When the mounting body 300 is omitted, the air outlet 311 can be directly formed on the side wall of the housing 100.

[0052] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A noise reduction component, characterized in that, The noise reduction component includes An air outlet body (210) is provided inside a ventilation cavity (211). The air outlet body (210) has a first air outlet (212) on the side of the ventilation cavity (211) and a second air outlet (213) on the top of the ventilation cavity (211) so that airflow can be discharged after passing through the first air outlet (212), the ventilation cavity (211) and the second air outlet (213) in sequence. The first silencing structure (220) is located in the ventilation cavity (211).

2. The noise reduction component according to claim 1, characterized in that, The noise reduction component also includes a rain cover (610) and a bracket (620). The rain cover (610) is fixed to the air outlet body (210) by the bracket (620). The rain cover (610) is used to cover at least part of the second air outlet (213) and has a gap with the second air outlet (213).

3. The noise reduction component according to claim 1, characterized in that, The number of the first silencing structure (220) is multiple, and each of them is set as a first silencing plate. Each of the first silencing plates is located in the ventilation cavity (211). An air outlet channel is formed between adjacent first silencing plates. The first air outlet (212) is connected to the second air outlet (213) through the air outlet channel.

4. The noise reduction component according to claim 3, characterized in that, The windward side of the first sound-absorbing plate has a chamfer; and / or The first sound-absorbing plate is detachable.

5. The noise reduction component according to claim 3 or 4, characterized in that, The thickness of the first sound-absorbing plate gradually increases from one side of the first air vent (212) to the other side opposite to the first air vent (212).

6. The noise reduction component according to claim 5, characterized in that, The first sound-absorbing plate is a wedge-shaped plate.

7. The noise reduction component according to claim 1 or 2, characterized in that, The bottom wall of the air outlet body (210) is provided with a drain hole, which is connected to the ventilation cavity (211).

8. The noise reduction component according to claim 1, characterized in that, The noise reduction component also includes an installation body (300), which has an upper installation frame (310) and a lower installation frame (320). The opening of the upper installation frame (310) is connected to the first air vent (212), and the opening of the lower installation frame (320) is provided with a door (330) that can be opened and closed.

9. The noise reduction component according to claim 8, characterized in that, The upper part of the door (330) has a second sound-absorbing structure (331), and the lower part of the door (330) is provided with a ventilation hole (332). The area of ​​the upper part is larger than the area of ​​the lower part.

10. The noise reduction component according to claim 1, characterized in that, The noise reduction component also includes an air intake body (410), which has a bent air intake channel (421) inside, and the bent air intake channel (421) is at least partially formed by a sound-absorbing structure.

11. The noise reduction component according to claim 10, characterized in that, The air intake body (410) has an air intake cavity, and the air intake cavity is provided with a plurality of second silencers (420). The bent air intake channel (421) is formed by the adjacent second silencers (420) and the air intake body (410). The second silencers (420) are detachable.

12. An energy storage device, characterized in that, The energy storage device includes a housing (100) and a noise reduction component according to any one of claims 1 to 7. The housing (100) has an air inlet (110) and an air outlet (311) in the housing area for accommodating the cooling unit. The air outlet (311) is connected to the first air outlet (212) of the noise reduction component.

13. The energy storage device according to claim 12, characterized in that, The ventilation cavity (211) of the noise reduction component is arranged vertically; and / or The air inlet (110) is located on the first side wall of the housing (100), and the air outlet (311) is located on the second side wall of the housing (100). The first side wall and the second side wall are different side walls of the housing (100).

14. An energy storage device, characterized in that, The energy storage device includes a housing (100) and a noise reduction component as described in claim 8 or 9. The housing (100) has an air inlet (110) and a mounting port (120) in the housing area for accommodating the cooling unit. The mounting body (300) of the noise reduction component covers the mounting port (120) so that the opening of the upper mounting frame (310) forms an air outlet (311). The lower part of the housing area is provided with an electronic control component so that the electronic control component can be operated through the opening of the lower mounting frame (320) when the door (330) of the noise reduction component is opened.

15. An energy storage device, characterized in that, The energy storage device includes a housing (100) and a noise reduction component as described in claim 10 or 11. The housing (100) has an air inlet (110) and an air outlet (311) in the housing area for accommodating the cooling unit. The air outlet (311) is connected to the first air outlet (212) of the noise reduction component, and the air inlet (110) is connected to the bent air inlet channel (421).

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