Energy storage device and sound damping device

Abstract

The application discloses an energy storage device and a silencing device, and relates to the technical field of energy storage devices; wherein the energy storage device comprises a device main body, a heat exchange device and a silencing device, the device main body comprises a battery; the heat exchange device is arranged on the device main body and is used for adjusting the working temperature of the battery; the heat exchange device is provided with a ventilation opening; the silencing device is arranged on the ventilation opening; the silencing device comprises a plurality of silencing plates, and the silencing plates can be switched between a first posture and a second posture; when the plurality of silencing plates are all in the first posture, the plurality of silencing plates cooperate to close the ventilation opening; when at least one silencing plate is in the second posture, a ventilation gap is defined between the silencing plate in the second posture and the adjacent silencing plate or the side wall of the ventilation opening, so as to open the ventilation opening. The technical scheme of the application is helpful to inhibit the noise propagation of the ventilation opening, thereby reducing the operation noise of the energy storage device.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, and in particular to an energy storage device and a noise reduction device. Background Technology

[0002] Energy storage devices typically include heat exchangers to regulate battery operating temperature. These heat exchangers have vents to facilitate heat exchange between the internal airflow and the external environment. However, while ensuring heat dissipation, these vents also become major pathways for noise propagation, resulting in relatively high operating noise levels for energy storage devices. Utility Model Content

[0003] In view of the above problems, this application provides an energy storage device and a noise reduction device, which aims to suppress the noise propagation of the ventilation opening, so as to reduce the operating noise of the energy storage device.

[0004] In a first aspect, this application provides an energy storage device, which includes a device body, a heat exchange device, and a silencing device. The device body includes a battery. The heat exchange device is located on the device body and is used to regulate the operating temperature of the battery. The heat exchange device is provided with a vent. The silencing device is located at the vent and includes multiple silencing plates. The silencing plates can switch between a first posture and a second posture. When all the silencing plates are in the first posture, the multiple silencing plates cooperate to close the vent. When at least one silencing plate is in the second posture, a ventilation gap is defined between the silencing plate in the second posture and the sidewall of the adjacent silencing plate or the vent, so as to open the vent.

[0005] This embodiment uses switchable silencers. When multiple silencers are in the first position, the ventilation openings are closed, reducing or blocking noise propagation. When at least one silencer is switched to the second position, it defines a ventilation gap with adjacent silencers or sidewalls, facilitating on-demand ventilation. Furthermore, since the silencer is one of the components defining the ventilation gap, and it possesses a sound-absorbing structure, it can suppress propagating noise as airflow passes through the ventilation gap, thereby reducing the operating noise of the energy storage device.

[0006] In some embodiments, each sound-absorbing plate is rotatable relative to the heat exchange device. When multiple sound-absorbing plates are in a first posture, they are spliced ​​or overlapped to close the vents. When multiple sound-absorbing plates are in a second posture, any two adjacent sound-absorbing plates are spaced apart to define multiple ventilation gaps to open the vents. Thus, by splicing or overlapping multiple sound-absorbing plates to close the vents in the first posture and by spaced apart any adjacent sound-absorbing plates to form multiple ventilation gaps in the second posture, the vents can be closed and multiple channels can be opened. This is beneficial for effectively blocking noise when needed, providing a relatively low-resistance ventilation path during heat exchange, and further suppressing noise propagation when heat dissipation is required.

[0007] In some embodiments, multiple silencing plates are arranged sequentially along a first direction, with the rotation axis of each silencing plate being substantially perpendicular to the first direction; the rotation axes of the multiple silencing plates are also substantially parallel. Thus, with the rotation axes of the silencing plates being substantially perpendicular to the first direction and substantially parallel to each other, the motion coordination and gap uniformity of the silencing plates can be improved within the allowable reasonable engineering tolerances, thereby enhancing the reliability and noise reduction performance of the silencing device in both closed and open states.

[0008] In some embodiments, the distance between the rotation axes of adjacent sound-absorbing plates is not less than 30 mm and not more than 120 mm. This is beneficial for improving the structural strength and rotational reliability of the sound-absorbing plates while taking into account the noise reduction effect and ventilation capacity of the ventilation gap, thus achieving a balance between heat dissipation and noise reduction.

[0009] In some embodiments, the silencing device further includes a drive component connected to multiple silencing plates for driving the plates to switch between a first posture and a second posture. Thus, by adjusting the posture of the silencing plates through the drive component, the noise reduction mode and heat dissipation mode can be switched on demand, reducing manual intervention and improving the intelligence level and operational reliability of the energy storage device.

[0010] In some embodiments, the drive assembly includes a drive member and a linkage member; multiple silencers are respectively connected to the linkage member; the drive member drives the linkage member to move, thereby causing the multiple silencers to move synchronously. This helps reduce the manufacturing cost and maintenance difficulty of energy storage devices, and improves the coordination of the silencer's movements and the stability of its noise reduction effect during opening and closing.

[0011] In some embodiments, the silencing device further includes a mounting frame, which is installed on the heat exchange device at a position corresponding to the vent; multiple silencing plates are rotatably connected to the mounting frame. This facilitates rapid assembly between the silencing device and the heat exchange device.

[0012] In some embodiments, the mounting frame is provided with a pivot hole and a guide groove, and the muffler plate is provided with a pivot and a linkage shaft; the pivot shaft passes through the pivot hole; the linkage shaft passes through the guide groove, and the linkage shaft is rotatably connected to the linkage component. This helps to improve the smoothness of movement and positional accuracy of the muffler plate during attitude switching.

[0013] In some embodiments, the vent has an inner side and an outer side, with the direction from the inner side to the outer side being the second direction; the sound-absorbing plate includes a first plate segment and a second plate segment arranged sequentially along the second direction and connected at an angle; a linkage shaft is located at the end of the first plate segment away from the second plate segment; a rotating shaft is located at the end of the first plate segment near the second plate segment, or the rotating shaft is located at the end of the second plate segment near the first plate segment. This facilitates the rotation of the sound-absorbing plate within a limited space and promotes the miniaturization of the sound-absorbing device.

[0014] In some embodiments, the included angle between the first plate segment and the second plate segment is not less than 60° and not more than 120°; the length of the first plate segment along the second direction is not greater than the length of the second plate segment along the second direction. This facilitates the synergistic optimization of ventilation efficiency and noise reduction within a limited space.

[0015] In some embodiments, the heat exchange device has a receiving cavity communicating with a vent; the silencing plate has an inner plate surface facing the receiving cavity and an outer plate surface opposite to the inner plate surface; the silencing device further includes a protective member covering the outer plate surface of the silencing plate. This helps to reduce interference from the external environment on the silencing device and the heat exchange device.

[0016] In some embodiments, multiple sound-absorbing panels are arranged sequentially along a first direction, with each sound-absorbing panel and protective component corresponding to the other; when the multiple sound-absorbing panels are in a first position, the multiple protective components overlap sequentially along the first direction. This helps to improve the sealing performance and protective reliability of the ventilation opening when it is closed.

[0017] In some embodiments, the muffler plate further has multiple sides connected between the outer side panel and the inner side panel; the protective member includes a main body and a flange portion disposed on the main body, the main body covering the outer side panel of the muffler plate; the flange portion covering at least one side of the muffler plate. This helps to reduce the intrusion of external environmental factors from the side gaps of the muffler plate, and improves the sealing performance and service life of the muffler device in the closed state.

[0018] In some embodiments, the vent has an inner side and an outer side, with the direction from the inner side to the outer side being a second direction; the sound-absorbing plate includes a first plate segment and a second plate segment arranged sequentially along the second direction and connected at an angle; the side of the second plate segment away from the first plate segment is a first side surface; the main body covers at least a portion of the outer surface of the second plate segment; and the flanged portion covers at least the first side surface. This improves the structural protection capability of the free end of the sound-absorbing plate and enhances the sealing performance and waterproof / dustproof effect of the vent when it is closed.

[0019] In some embodiments, the silencing plate is a porous silencing plate. This is beneficial for improving the noise reduction performance of the silencing device under all operating conditions, while the porous structure reduces the weight of the silencing plate, which helps to improve the response speed of attitude switching and operational reliability.

[0020] Secondly, this application provides a silencing device for use at a ventilation opening. The silencing device includes multiple silencing plates that can be switched between a first posture and a second posture. When the multiple silencing plates are in the first posture, they cooperate to close the ventilation opening. When at least one silencing plate is in the second posture, a ventilation gap is defined between the silencing plate in the second posture and the side wall of the adjacent silencing plate or the ventilation opening to open the ventilation opening.

[0021] In some embodiments, the silencing device further includes a mounting frame, and each silencing plate is rotatably connected to the mounting frame; when the multiple silencing plates are in a first posture, the multiple silencing plates are spliced ​​or overlapped to close the ventilation opening; when the multiple silencing plates are in a second posture, any two adjacent silencing plates are spaced apart to define multiple ventilation gaps to open the ventilation opening.

[0022] In some embodiments, the silencing device further includes a drive assembly, which includes a drive member and a linkage member; the mounting frame is provided with a pivot hole and a guide groove, and the silencing plate is provided with a pivot shaft and a linkage shaft; the pivot shaft passes through the pivot hole, the linkage shaft passes through the guide groove, and the linkage shaft is connected to the linkage member; the drive member is used to drive the linkage member to move, and drives the silencing plate to rotate around the pivot shaft through the linkage shaft.

[0023] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a schematic diagram of the structure of an energy storage device according to some embodiments of this application; Figure 2 This is an exploded structural diagram of a heat exchange device and a silencer device according to some embodiments of this application; Figure 3 This is a schematic diagram of the structure of a silencer device according to some embodiments of this application; Figure 4 This is a schematic diagram of the structure of a silencer device according to other embodiments of this application; Figure 5 This is a schematic diagram of the structure of the sound-absorbing plate in some embodiments of this application; Figure 6 for Figure 5 A structural schematic diagram from another perspective in the illustrated embodiment; Figure 7 This is a schematic diagram showing multiple sound-absorbing plates in a first posture in some embodiments of this application; Figure 8 This is a schematic diagram showing multiple sound-absorbing plates in a second posture in some embodiments of this application; Figure 9 This is a schematic diagram showing multiple sound-absorbing plates in a second posture in other embodiments of this application.

[0025] The reference numerals in the detailed embodiments are as follows: 10. Energy storage equipment; 11. Equipment body; 400. Cabinet; 300. Battery; 100. Heat exchanger; 110. Fan; 120. Housing; 101. Ventilation opening; 102. Containing cavity; 200. Silencing device; 201. Ventilation gap; 210. Silencing plate; 216. Rotation axis; 211. First plate segment; 212. Second plate segment; 213. Inner side plate surface; 214. Outer side plate surface; 215. Side surface; 215a. First side surface; 220. Drive assembly; 221. Drive component; 222. Linkage component; 230. Mounting frame; 231. Rotating shaft hole; 232. Guide groove; 240. Protective component; 241. Main body; 242. Flanged part; 260. Rotating shaft; 270. Linkage shaft; The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0028] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0031] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0032] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" 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 the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0034] In energy storage devices, battery performance is significantly affected by temperature; excessively high or low temperatures can lead to safety risks or decreased activity. Therefore, heat exchange devices are typically installed to regulate battery operating temperature. Common heat exchange devices include a refrigerant circulation system consisting of a compressor, condenser, and evaporator. Taking cooling as an example, condensers are often equipped with fans to improve heat dissipation; however, the operation of the fan and the airflow itself generate considerable noise, and the cooling demands further increase the fan power. Thus, heat exchange devices are equipped with vents for internal and external heat exchange; however, these vents also become major channels for noise transmission, resulting in relatively high operating noise levels for energy storage devices.

[0035] Based on this, this application proposes an energy storage device. By installing switchable silencers at the ventilation openings of the energy storage device, the ventilation openings are closed when multiple silencers are in the first position, significantly reducing or blocking noise propagation. When at least one silencer is switched to the second position, a ventilation gap is defined between it and adjacent silencers or sidewalls, which helps to achieve on-demand ventilation. Secondly, since the silencers are one of the components defining the ventilation gaps, and the silencers themselves have sound-absorbing structures, they can suppress propagating noise when airflow passes through the ventilation gaps, thereby helping to reduce the operating noise of the energy storage device.

[0036] According to some embodiments of this application, please refer to Figure 1 And further reading Figures 2 to 4 The energy storage device 10 includes a main body 11, a heat exchange device 100, and a silencing device 200. The main body 11 includes a battery 300. The heat exchange device 100 is located on the main body 11 and is used to regulate the operating temperature of the battery 300. The heat exchange device 100 is provided with a vent 101. The silencing device 200 is located at the vent 101 and includes multiple silencing plates 210. The silencing plates 210 can switch between a first posture and a second posture. When all the silencing plates 210 are in the first posture, the multiple silencing plates 210 cooperate to close the vent 101. When at least one silencing plate 210 is in the second posture, a ventilation gap 201 is defined between the silencing plate 210 in the second posture and the side wall of the adjacent silencing plate 210 or the vent 101, so as to open the vent 101.

[0037] The main body 11 of the equipment typically includes structural components such as a cabinet 400. These structural components collectively enclose the internal installation space to house core components such as the battery 300, heat exchange device 100, and electrical components. In other words, the cabinet 400 and other structural components provide physical support and mechanical connection foundations for each functional component. It is understood that the main body 11 is not limited to a single cabinet 400 structure, but encompasses the load-bearing foundation or functional components of the energy storage device 10, excluding independent functional modules such as the heat exchange device 100 and the silencing device 200. The number of batteries 300 is usually multiple. Multiple battery cells 300 can be connected in series, parallel, or mixed, or they can be first assembled into battery modules and then further combined. Individual battery cells 300 can be secondary batteries 300 such as lithium-sulfur batteries 300, sodium-ion batteries 300, and magnesium-ion batteries 300, and their shapes can be cylindrical, flat, cuboid, etc.

[0038] The heat exchange device 100 is used to regulate the temperature of the battery 300. Generally, the heat exchange device 100 includes a compressor, a first heat exchanger, a throttling component, and a second heat exchanger. The compressor drives the heat exchange mechanism to circulate; the first heat exchanger exchanges heat with the external environment, and the second heat exchanger exchanges heat with the battery 300. A control valve switches the two heat exchangers to function as condensers or evaporators, achieving cooling or heating. The second heat exchanger can be attached to or placed between the batteries. The throttling component is used to reduce pressure and regulate flow. To improve heat exchange efficiency, a fan 110 can guide airflow through the first heat exchanger. Furthermore, the heat exchange device can be equipped with temperature and pressure sensors, which can be controlled by the energy storage device 10 or a controller integrated into the heat exchange device 100.

[0039] A heat exchanger 100 is mounted on the main body 11 of the equipment and is used to regulate the operating temperature of the battery 300, for example, to cool the battery 300 when its temperature is too high, or to heat it in a low-temperature environment. The heat exchanger 100 is provided with a vent 101 to facilitate gas exchange with the external environment. The vent 101 can be an air inlet or an air outlet. A silencer 200 is provided at the vent 101 to reduce the noise transmitted outward through the vent 101 when the heat exchanger 100 is working. For ease of understanding, an embodiment is described below. The heat exchanger has a housing, and the compressor, the first heat exchanger, and the fan 110 are disposed inside the housing 120. The vent 101 is located on the housing 120. The housing 120 of the heat exchanger 100 can be independent of the cabinet of the energy storage device, or the housing 120 and the cabinet can share at least part of their structure.

[0040] The noise reduction device includes a noise reduction plate 210, which can be made of sound-absorbing material, or have noise reduction structures such as porous sound-absorbing layers, micro-perforated plates, or fiber filling layers on its surface and / or inside. Thus, even when the ventilation gap 201 is open and airflow passes through the noise reduction plate 210, some sound energy can still be absorbed by the noise reduction plate 210, thereby further reducing outward-propagating noise.

[0041] There can be multiple mufflers 210, for example, two, three, four, or more. These mufflers 210 can be partially movable or all of them can be movable. Generally, the movable mufflers 210 can switch between a first posture and a second posture. The posture switching of the mufflers 210 can be achieved by a drive component (e.g., a motor, electromagnet, or manual adjustment mechanism). The drive component moves the mufflers 210 relative to the vent 101, thereby changing the spatial position or angle of the mufflers 210. For ease of explanation, the following description uses the example of multiple movable mufflers 210. When multiple silencers 210 are in the first position, they cooperate with each other, such as overlapping, splicing, abutting, or jointly covering the vent 101, thereby closing the vent 101. When at least one silencer 210 switches to the second position, at least one ventilation gap 201 is defined between the silencer 210 in the second position and its adjacent silencer 210, or between the silencer 210 and the sidewall of the vent 101. This ventilation gap 201 allows airflow to pass through, thereby opening the vent 101. Furthermore, by controlling the number of silencers 210 in the second position and the rotation angle or displacement of each silencer 210, the size and number of ventilation gaps 201 can be adjusted, thereby adjusting the effective flow area of ​​the vent 101. Thus, when the heat exchange device 100 needs to operate, an appropriate ventilation gap 201 can be opened according to the actual heat dissipation requirements, satisfying the heat exchange airflow while controlling the noise radiated outward through the vent 101 within a certain range.

[0042] In this embodiment, by setting up a switchable silencer plate 210, when multiple silencer plates 210 are in the first position, the ventilation opening 101 is closed, which can reduce or block noise propagation; when at least one silencer plate 210 switches to the second position, it defines a ventilation gap 201 with the adjacent silencer plate 210 or the side wall, which helps to achieve on-demand ventilation. Secondly, since the silencer plate 210 is one of the components defining the ventilation gap 201, the silencer plate 210 itself has a sound-absorbing structure, which can suppress the propagating noise when the airflow passes through the ventilation gap 201, thereby helping to reduce the operating noise of the energy storage device 10.

[0043] In some embodiments, please refer to Figures 2 to 4 Each silencing plate 210 is rotatably arranged relative to the heat exchange device 100. When the multiple silencing plates 210 are in the first position, the multiple silencing plates 210 are spliced ​​or overlapped to close the vent 101. When the multiple silencing plates 210 are in the second position, any two adjacent silencing plates 210 are spaced apart to define multiple ventilation gaps 201 to open the vent 101.

[0044] Each of the sound-absorbing plates 210 is rotatably arranged relative to the heat exchange device 100. That is, each of the sound-absorbing plates 210 can be directly rotatably connected to the heat exchange device 100, or each of the sound-absorbing plates 210 can be installed on the heat exchange device 100 through a mounting structure. It is necessary to make the sound-absorbing plate 210 swing around its rotation axis 216 within a certain angle range.

[0045] like Figure 7As shown, when multiple silencing plates 210 are in the first posture, adjacent silencing plates 210 are spliced ​​or overlapped with each other. Splicing means that the edges of adjacent silencing plates 210 are aligned and in contact with each other; overlapping means that the edge of one silencing plate 210 covers the edge of an adjacent silencing plate 210, with the two partially overlapping. In this way, multiple silencing plates 210 together cover the ventilation, thereby closing the vent 101. In this state, the silencing device 200 can basically block the transmission of internal noise from the heat exchange device 100 to the outside. When it is necessary to open the vent 101 to meet the heat dissipation requirements of the heat exchange device 100, at least some of the silencing plates 210 rotate to the second posture. In the second posture, any two adjacent silencing plates 210 are spaced apart, that is, adjacent silencing plates 210 are separated from each other and maintain a certain distance, thereby defining a ventilation gap 201 between every two adjacent silencing plates 210. Thus, multiple silencing plates 210 simultaneously form multiple parallel ventilation gaps 201, which together form the open channel of the vent 101. Airflow can pass evenly through each ventilation gap 201, increasing the flow area and reducing airflow resistance.

[0046] In this embodiment, the sound-absorbing plate 210 is configured to be relatively rotatable. In the first posture, multiple sound-absorbing plates 210 are spliced ​​or overlapped to close the vent 101. In the second posture, any adjacent sound-absorbing plates 210 are spaced apart to form multiple ventilation gaps 201. This realizes the closure of the vent 101 and the opening of multiple channels. It is beneficial to effectively block noise when needed, and can also provide a relatively low-resistance ventilation path during heat exchange. It is also beneficial to further suppress noise propagation when heat dissipation is required.

[0047] In some embodiments, please refer to Figure 4 Multiple sound-absorbing plates 210 are arranged sequentially along the first direction, and the rotation axis 216 of each sound-absorbing plate 210 is basically perpendicular to the first direction, and the rotation axes 216 of the multiple sound-absorbing plates 210 are basically parallel.

[0048] The first direction can be the length or width of the vent 101, or it can be the vertical direction. The rotation axis 216 of each silencing plate 210 is set substantially perpendicular to the first direction. "Substantially perpendicular" means that the rotation axis 216 is perpendicular or nearly perpendicular to the first direction, allowing for deviations due to machining tolerances, assembly errors, or minor design adjustments, as long as these deviations do not affect the uniform opening and closing of the silencing plate 210 during posture switching. For example, the angle between the rotation axis 216 and the first direction can be between 85° and 95°. This degree of tilt will not substantially affect the motion coordination of the silencing plate 210 or the uniformity of the ventilation gap 201. The rotation axes 216 of the multiple silencing plates 210 are set substantially parallel to each other, meaning that any two rotation axes 216 are parallel or nearly parallel, allowing for minor deviations due to manufacturing or installation, as long as each axis extends in approximately the same direction. This ensures that each silencing plate 210 maintains a consistent swing plane during rotation, reducing interference or uneven gaps between adjacent silencing plates 210 during rotation due to non-parallel axes. For example, when they are nearly parallel, it can be understood that the angle between the two rotation axes 216 is within 3°. By setting the rotation axes 216 to be basically perpendicular to the first direction and basically parallel to each other, it is beneficial for multiple sound-absorbing plates 210 to form a neat and uniform array on the vent 101. This facilitates tight splicing or overlapping in the first posture and also facilitates the formation of multiple ventilation gaps 201 with uniform width and regular arrangement in the second posture, thereby improving the uniformity of airflow and the noise reduction effect.

[0049] In this embodiment, the rotation axis 216 of the muffler plate 210 is basically perpendicular to the first direction and the rotation axes 216 are basically parallel to each other. Under the premise of allowing reasonable engineering tolerances, the motion coordination and gap uniformity of the muffler plate 210 can be improved, which is conducive to improving the reliability and noise reduction performance of the muffler device 200 in the closed and open states.

[0050] In some embodiments, such as Figure 7 As shown, the distance between the rotation axes 216 of adjacent sound-absorbing plates 210 is not less than 30mm and not more than 120mm.

[0051] Specifically, along the first direction, the distance between the rotation axes 216 of adjacent sound-absorbing plates 210 is set to be no less than 30mm and no more than 120mm. The distance between the rotation axes 216 of adjacent sound-absorbing plates 210 along the first direction is as follows: Figures 7 to 9As shown in d, the value of d can be unlimited, such as 30mm, 36mm, 40mm, 45mm, 50mm, 55mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, or 120mm. When the distance between adjacent rotation axes 216 is less than 30mm, the width of the silencing plate 210 is too narrow, resulting in a decrease in the rigidity of a single silencing plate 210, which is prone to vibration noise under airflow impact. At the same time, the dense silencing plates 210 increase the difficulty of manufacturing and assembly. When the distance is greater than 120mm, the width of the silencing plate 210 is too large, and the ventilation gap 201 formed in the second posture is correspondingly too wide, making it easier for sound waves to radiate directly outward. Controlling the distance between 30mm and 120mm is beneficial for the silencing plate 210 to have sufficient structural strength and stable rotation performance, while also forming a ventilation gap 201 of moderate width in the second posture. This helps to achieve a balance between heat dissipation and noise reduction.

[0052] In this embodiment, the distance between the rotation axes 216 of adjacent sound-absorbing plates 210 is in the range of 30mm to 120mm. This is beneficial to improving the structural strength and rotational reliability of the sound-absorbing plates 210 while taking into account the noise reduction effect and ventilation capacity of the ventilation gap 201, thus achieving a balance between heat dissipation and noise reduction.

[0053] In some embodiments, please refer to Figures 2 to 4 The silencing device 200 also includes a drive assembly 220, which is drivenly connected to a plurality of silencing plates 210 and is used to drive the plurality of silencing plates 210 to switch between a first posture and a second posture.

[0054] The drive assembly 220 can be implemented in various forms, such as a motor or cylinder and its related transmission structure. It is understood that the drive assembly 220 can simultaneously drive multiple mufflers 210 to rotate synchronously, enabling all mufflers 210 to switch uniformly between a first and a second posture; alternatively, each muffler 210 can be controlled independently, allowing only some mufflers 210 to switch to the second posture while others remain in the first posture, forming combinations of ventilation gaps 201 of different numbers and widths to adapt to different heat exchange and noise reduction requirements. The drive assembly 220 may also include position detection elements (such as Hall sensors or microswitches) to detect the current posture of the mufflers 210, facilitating closed-loop control. In one example, the drive assembly 220 includes one or more rotary motors, whose output shafts are connected to the rotating shafts 260 of each muffler 210 via connecting rods, gears, or synchronous belts. When the motors rotate, they drive all mufflers 210 to rotate synchronously, thereby achieving uniform posture switching. In another example, the drive assembly 220 includes multiple independent micro motors, each of which drives a muffler 210 individually, thereby enabling independent control of each muffler 210 so that only some mufflers 210 can be switched to the second posture as needed to form different opening combinations.

[0055] In this embodiment, the noise reduction mode and heat dissipation mode can be switched on demand by adjusting the posture of the silencing plate 210 through the drive component 220. This helps to reduce manual intervention and thus improve the intelligence level and operational reliability of the energy storage device 10.

[0056] In some embodiments, please continue reading Figure 4 The drive assembly 220 includes a drive component 221 and a linkage component 222; multiple mufflers 210 are respectively connected to the linkage component 222; the drive component 221 is used to drive the linkage component 222 to move, so as to drive the multiple mufflers 210 to move synchronously.

[0057] The driving component 221 can be a power component such as a motor, cylinder, hydraulic cylinder, or electromagnetic drive component 221. The linkage component 222 can adopt a structure that enables synchronous linkage of multiple components, such as a linkage structure, synchronous belt structure, gear set structure, or chain structure. The driving component 221 can be directly connected to the linkage component 222 or indirectly connected through a transmission component. The connection between the multiple sound-absorbing plates 210 and the linkage component 222 can be a detachable or non-detachable connection method, such as hinge, snap-fit, or bolt fixing, so that the sound-absorbing plates 210 can rotate or move synchronously with the movement of the linkage component 222. This achieves consistency in the attitude switching of the multiple sound-absorbing plates 210. At this time, a roughly uniform ventilation gap 201 is formed between any two adjacent sound-absorbing plates 210, and the ventilation port 101 is opened. By controlling the stroke or rotation angle of the driving component 221, the sound-absorbing plates 210 can be stopped at any intermediate position between the first attitude and the second attitude, thereby adjusting the size of the ventilation gap 201 and further adjusting the ventilation volume and noise reduction effect.

[0058] In this embodiment, the synchronous attitude switching of multiple silencing plates 210 is achieved through the cooperative arrangement of the driving component 221 and the linkage component 222. The linkage component 222 simplifies the driving structure and reduces the number of driving components 221 used, which helps to reduce the manufacturing cost and maintenance difficulty of the energy storage device 10. In addition, the synchronous attitude switching of multiple silencing plates 210 makes the size of each ventilation gap 201 basically the same, which helps to improve the coordination of the silencing device 200 during the opening and closing process and the stability of the noise reduction effect.

[0059] In some embodiments, please refer to Figure 2 and Figure 3 The silencing device 200 also includes a mounting frame 230, which is installed on the heat exchange device 100 at the position corresponding to the vent 101; multiple silencing plates 210 are rotatably connected to the mounting frame 230.

[0060] The mounting frame 230 can be a one-piece molded structure or a spliced ​​assembly structure, and the overall outline of the mounting frame 230 is adapted to the opening outline of the vent 101. The mounting frame 230 can be fixed to the preset position of the heat exchange device 100 by means of bolt connection, snap connection, welding or screw riveting. Multiple sound-absorbing plates 210 are rotatably connected to the mounting frame 230 through rotating connectors; the rotating connectors can be standard or customized parts such as rotating shafts 260, rotating lugs or bearings, and the two ends or side walls of the sound-absorbing plates 210 can be extended with assembly parts that cooperate with the rotating connectors, so that the sound-absorbing plates 210 can rotate stably relative to the mounting frame 230. By first assembling the silencing plate 210 onto the mounting frame 230, and then assembling the overall mounting frame 230 onto the heat exchange device 100, the installation process inside the energy storage device 10 can be simplified and the assembly efficiency improved. It also provides an independent and convenient operating space when maintaining or replacing the silencing plate 210 components, ensuring the integrity of the entire silencing device 200 structure and the accuracy of the installation position.

[0061] In this embodiment, the mounting frame 230 is structurally designed so that multiple silencing plates 210 can be rotatably mounted on the mounting frame 230, which facilitates the rapid assembly between the silencing device 200 and the heat exchange device 100.

[0062] In some embodiments, please refer to Figure 2 and Figure 3 The mounting frame 230 is provided with a pivot hole 231 and a guide groove 232, and the muffler plate 210 is provided with a pivot 260 and a linkage shaft 270; the pivot 260 passes through the pivot hole 231; the linkage shaft 270 passes through the guide groove 232, and the linkage shaft 270 is connected to the linkage component 222 for transmission.

[0063] The mounting frame 230 is equipped with a pivot hole 231 and a guide groove 232 corresponding to the position of each muffler plate 210. The pivot hole 231 is adapted to the size of the pivot shaft 260, allowing the pivot shaft 260 to rotate flexibly within the pivot hole 231 without significant wobbling, providing a support reference for the rotation of the muffler plate 210. The guide groove 232 extends along a preset trajectory, and its extension direction is adapted to the movement direction of the linkage 222 and the rotation trajectory of the muffler plate 210, providing a guiding and limiting function for the movement of the linkage shaft 270, allowing the linkage shaft 270 to move smoothly along the trajectory of the guide groove 232, thereby driving the muffler plate 210 to rotate in the preset direction.

[0064] The linkage 222 has connecting holes or slots corresponding to the positions of each muffler 210. The linkage shaft 270 passes through the connecting holes or slots, thereby realizing the linkage connection between the linkage 222 and each muffler 210. Thus, when the drive 221 operates, it drives the linkage 222 to move in a preset direction; when the linkage 222 moves, it drives the muffler 210 to move via the linkage shaft 270. Since the linkage shaft 270 also passes through the guide groove 232, the guide groove 232 constrains and guides the movement path of the linkage shaft 270, ensuring that the linkage shaft 270 can only move along the trajectory of the guide groove 232. During the movement, the linkage shaft 270 drives the muffler 210 to rotate around the pivot 260, thereby realizing the switching of the muffler 210 between a first posture and a second posture.

[0065] In this embodiment, by setting a pivot hole 231 and a guide groove 232 on the mounting frame 230, and correspondingly setting a pivot 260 and a linkage shaft 270 on the muffler plate 210, the linkage shaft 270 drives the muffler plate 210 to rotate around the pivot 260 under the guidance of the guide groove 232, which helps to improve the motion stability and positional accuracy of the muffler plate 210 during the attitude switching process.

[0066] In some embodiments, please refer to Figures 2 to 5 The ventilation opening 101 has an inner side and an outer side, and the direction from the inner side to the outer side is the second direction; the sound-absorbing plate 210 includes a first plate segment 211 and a second plate segment 212 arranged sequentially along the second direction and connected at an angle; the linkage shaft 270 is located at the end of the first plate segment 211 away from the second plate segment 212; the rotating shaft is located at the end of the first plate segment 211 near the second plate segment 212, or the rotating shaft is located at the end of the second plate segment 212 near the first plate segment 211.

[0067] In this embodiment, the inner side of the vent 101 points towards the interior of the heat exchange device 100 or the side closer to the battery 300, while the outer side of the vent 101 points towards the exterior of the device or the side farther from the battery 300. The silencing plate 210 has a bent or curved structure and includes a first plate segment 211 and a second plate segment 212. The first plate segment 211 and the second plate segment 212 are arranged sequentially along a second direction, with the first plate segment 211 relatively closer to the inner side of the vent 101 and the second plate segment 212 relatively closer to the outer side of the vent 101. The first plate segment 211 and the second plate segment 212 are connected at an angle, which can be an acute angle, a right angle, or an obtuse angle; no specific limitation is made here. During the rotation of the silencing plate 210, the first plate segment 211 and the second plate segment 212 rotate as a whole around the axis of rotation. Because the first plate segment 211 and the second plate segment 212 are set at an angle, the direction of airflow guidance and the range of obstruction by the silencing plate 210 change under different postures. When multiple sound-absorbing panels 210 rotate to the first position, the second plate segments 212 of each sound-absorbing panel 210 are spliced ​​or overlapped with each other, closing the ventilation opening 101.

[0068] The linkage shaft 270 is located at the end of the first plate segment 211 away from the second plate segment 212, that is, at the end of the first plate segment 211 near the inner side of the vent 101. The rotating shaft can be located at the end of the first plate segment 211 near the second plate segment 212, that is, near the connection between the first plate segment 211 and the second plate segment 212; or, the rotating shaft can be located at the end of the second plate segment 212 near the first plate segment 211, near the connection between the two plate segments. In other words, the rotating shaft is always located near the junction of the first plate segment 211 and the second plate segment 212. Thus, by placing the rotating shaft 260 at the connection between the first plate segment 211 and the second plate segment 212, the rotation center of the sound-absorbing plate 210 is located at the angle position. Compared to the straight plate structure, the bent structure changes the motion envelope range when the sound-absorbing plate rotates, so that when the sound-absorbing plate 210 rotates around the axis, the first plate segment 211 and the second plate segment 212 swing in different directions respectively. This helps to reduce interference between the edge of the sound-absorbing plate 210 and the surrounding components within the limited installation space of the vent 101.

[0069] In this embodiment, the muffler plate 210 is configured as a first plate segment 211 and a second plate segment 212 arranged sequentially along the second direction and connected at an angle. The linkage shaft 270 is located at the end of the first plate segment 211 away from the second plate segment 212, and the rotating shaft is located near the connection between the two plate segments. This facilitates the rotation of the muffler plate 210 in a limited space and is conducive to the miniaturization of the muffler device 200.

[0070] In some embodiments, please refer to Figure 5 and Figure 6 The included angle between the first plate segment 211 and the second plate segment 212 is not less than 60° and not greater than 120°; the length of the first plate segment 211 along the second direction is not greater than the length of the second plate segment 212 along the second direction.

[0071] like Figure 5 and Figure 6 As shown, the silencing plate 210 is composed of a first plate segment 211 and a second plate segment 212 connected at a certain included angle. The included angle between the first plate segment 211 and the second plate segment 212 is set within the range of 60° to 120°. When the included angle is less than 60°, the bending angle is too sharp, which can easily cause the silencing plate 210 to interfere with adjacent components during rotation, and increase airflow resistance. When the included angle is greater than 120°, the bending structure tends to be straight, which weakens the suppression effect on noise propagation and also suppresses the motion envelope range when the silencing plate rotates. Setting the included angle between 60° and 120° helps to reduce interference between the silencing plate 210 and surrounding components, and also helps to form a ventilation gap 201 with good noise reduction performance in the second posture. In any case, the included angle between the first plate segment 211 and the second plate segment 212 can be 60°, 70°, 80°, 90°, 110° or 120°.

[0072] The length of the first plate segment 211 along the second direction is no greater than the length of the second plate segment 212 along the second direction, which is the direction from the inside to the outside of the vent 101. The first plate segment 211 is relatively closer to the inside of the vent 101, and the second plate segment 212 is relatively closer to the outside of the vent 101, which is generally an air outlet. By limiting the length of the first plate segment 211 to be less than or equal to the length of the second plate segment 212, in the second posture, the shorter first plate segment 211 leaves a larger air intake space inside the vent 101, while the longer second plate segment 212 forms a relatively narrow air outlet channel outside the vent 101. This helps to improve ventilation efficiency while extending the sound wave propagation path and improving noise reduction effect.

[0073] When multiple sound-absorbing panels 210 are in the first position, the second segments 212 of each sound-absorbing panel 210 are spliced ​​or overlapped. Due to the relatively long length of the second segments 212, a good sound insulation effect can be achieved. When the sound-absorbing panels 210 are switched to the second position, a ventilation gap 201 is formed between adjacent sound-absorbing panels 210, such as... Figure 7 and Figure 8 As shown, the included angle of 60° to 120° is matched with the length of the first plate segment 211 not being greater than the length of the second plate segment 212. Under some working conditions, this can make the ventilation gap 201 gradually narrow from the inside to the outside or maintain a uniform shape, which is conducive to the smooth flow of air and also uses the gap shape to effectively attenuate noise.

[0074] This embodiment limits the included angle between the first plate segment 211 and the second plate segment 212 to between 60° and 120°, and sets the length of the first plate segment 211 along the second direction to be no greater than the length of the second plate segment 212 along the second direction. This not only facilitates the smooth rotation of the sound-absorbing plate 210 during attitude switching and reduces motion interference and noise reduction performance degradation caused by excessively small or large bending angles, but also helps the sound-absorbing plate 210 to form a ventilation gap 201 shape that is conducive to sound wave attenuation in the second attitude. Thus, it is beneficial to achieve synergistic optimization of ventilation efficiency and noise reduction effect in a limited space.

[0075] In some embodiments, please refer to Figures 2 to 5 The heat exchange device 100 has a receiving cavity 102 communicating with the vent 101; the sound-absorbing plate 210 has an inner plate surface 213 facing the receiving cavity 102 and an outer plate surface 214 opposite to the inner plate surface 213; the sound-absorbing device 200 also includes a protective member 240, which covers the outer plate surface 214 of the sound-absorbing plate 210.

[0076] like Figures 2 to 5As shown, the heat exchange device 100 has an internal accommodating cavity 102 for containing the heat exchange medium or for airflow. A vent 101 is connected to the accommodating cavity 102, allowing airflow within the accommodating cavity 102 to be discharged outwards or introduced from the outside. A sound-absorbing plate 210 is installed at the vent 101, having an inner plate surface 213 and an outer plate surface 214 oppositely arranged. The inner plate surface 213 faces the accommodating cavity 102, while the outer plate surface 214 faces away from the accommodating cavity 102 and towards the outside of the device. A protective component 240, which can be a protective mesh, protective film, perforated plate, or waterproof composite material, covers the outer plate surface 214 of the sound-absorbing plate 210 and is either fixedly or detachably connected to the sound-absorbing plate 210. The protective component 240 provides physical protection for the sound-absorbing plate 210, reducing the entry of external foreign objects, dust, rainwater, or small animals into the heat exchange device 100. On the other hand, when the sound-absorbing plate 210 is in the second position, it does not affect the heat dissipation function of the ventilation gap 201, and can also provide preliminary blocking or attenuation of outward noise.

[0077] The protective element 240 covering the outer side panel 214 in this embodiment helps to reduce the interference of the external environment on the silencing device 200 and the heat exchange device 100.

[0078] In some embodiments, please refer to Figures 3 to 5 Multiple sound-absorbing panels 210 are arranged sequentially along the first direction, and the sound-absorbing panels 210 and the protective components 240 are arranged in a one-to-one correspondence; when the multiple sound-absorbing panels 210 are in the first posture, the multiple protective components 240 overlap sequentially along the first direction.

[0079] Among them, multiple sound-absorbing plates 210 are arranged sequentially along the first direction at the ventilation opening 101, and a protective component 240 is fixedly installed on the outer side plate 214 of each sound-absorbing plate 210. The sound-absorbing plate 210 and the protective component 240 form a one-to-one assembly relationship.

[0080] When multiple sound-absorbing panels 210 rotate synchronously to the first posture under the drive of the drive assembly 220, all sound-absorbing panels 210 together close the vent 101. At this time, each protective component 240 moves to the closed position along with the sound-absorbing panel 210. In two adjacent protective components 240 along the first direction, the edge of one protective component 240 covers the edge of the adjacent protective component 240, forming a continuous overlapping covering layer. The overlapping direction can be set to a uniform orientation, that is, all protective components 240 cover the adjacent protective components 240 with the same side edge, forming a fish-scale or tile-like arrangement. In this way, the protective barrier formed by multiple protective components 240 in the first posture basically covers the outer surface 214 of the multiple sound-absorbing panels 210. In this way, the splicing gaps between the sound-absorbing panels 210 can be blocked, reducing the seepage of external rainwater, dust, sand, or foreign objects into the vent 101 from the gaps. Meanwhile, the overlapping structure creates a layered barrier between the protective components 240. Even if a small amount of moisture flows along the surface of the protective component 240, it will be blocked by the next layer of protective component 240 and cannot enter the gaps, thus improving waterproof and dustproof performance. When a small amount of moisture seeps into the gaps under the action of wind, the overlapping area can form an effective blocking path. When the silencing plate 210 switches to the second posture, each protective component 240 rotates and opens synchronously with the silencing plate 210, the overlapping relationship between adjacent protective components 240 is released, and a ventilation gap 201 is formed between the silencing plates 210 to ensure the normal ventilation and heat dissipation of the heat exchange device 100.

[0081] In this embodiment, by setting the protective component 240 and the sound-absorbing plate 210 in a one-to-one correspondence, and realizing the sequential overlap of multiple protective components 240 in the first posture, it is beneficial to improve the continuous sealing protective structure formed in the closed state of the vent 101, thereby improving the sealing performance and protection reliability of the vent 101 in the closed state.

[0082] In some embodiments, please refer to Figures 3 to 6 The sound-absorbing plate 210 also has a plurality of side surfaces 215 connected between the outer side surface 214 and the inner side surface 213; the protective member 240 includes a main body 241 and a flange 242 provided on the main body 241, the main body 241 covering the outer side surface 214 of the sound-absorbing plate 210; the flange 242 covering at least one side surface 215 of the sound-absorbing plate 210.

[0083] The sound-absorbing plate 210 has a plate-like structure, having an outer plate surface 214 and an inner plate surface 213 disposed opposite to each other, and a plurality of side surfaces 215 connecting the outer plate surface 214 and the inner plate surface 213. The side surfaces 215 are distributed around the perimeter of the sound-absorbing plate 210, including two side edges extending along a first direction and two end edges extending in a direction perpendicular to the first direction. The protective member 240 includes a main body portion 241 and a flange portion 242, which can be integrally formed or combined.

[0084] Generally, the main body 241 is a sheet-like structure, its shape adapted to the outer surface 214 of the sound-absorbing plate 210, and is fixedly attached to the outer surface 214 of the sound-absorbing plate 210 by means of adhesive, snap-fit, or fastener connection. The flange 242 extends from the edge of the main body by bending, bending towards the side of the sound-absorbing plate 210, and covering at least one side 215 of the sound-absorbing plate 210. The flange 242 can be configured to cover all sides 215 of the sound-absorbing plate 210, or selectively cover two sides extending along the first direction, or cover the end edge perpendicular to the first direction; the specific coverage area is determined according to the protection requirements. When the flange 242 covers the side 215 of the sound-absorbing plate 210, the flange 242 and the side 215 of the sound-absorbing plate 210 form a fitted or gap-fit, providing a wrap-around protection for the edge of the sound-absorbing plate 210. When the silencing plate 210 is in its first position, the flanged portion 242 effectively prevents external moisture, dust, or foreign objects from seeping into the gap between the side 215 of the silencing plate 210 and the mounting frame 230, further improving the sealing effect. Simultaneously, the flanged portion 242 and the main body together form a semi-enclosed or fully enclosed structure for the silencing plate 210, which helps improve the connection strength between the protective component 240 and the silencing plate 210, reducing the likelihood of the protective component 240 warping or detaching during long-term use.

[0085] This embodiment provides a protective member 240, which includes a main body 241 and a flange 242. The main body 241 covers the outer side panel 214 of the silencing plate 210, while the flange 242 covers at least one side 215 of the silencing plate 210. This provides multi-faceted protection for the silencing plate 210, which helps reduce the intrusion of external environmental factors from the gaps on the side 215 of the silencing plate 210. It also helps improve the sealing performance and service life of the silencing device 200 in the closed state.

[0086] In some embodiments, please refer to Figures 3 to 5The vent 101 has an inner side and an outer side, and the direction from the inner side to the outer side is the second direction; the sound-absorbing plate 210 includes a first plate segment 211 and a second plate segment 212 arranged sequentially along the second direction and connected at an angle; the side 215 of the second plate segment 212 away from the first plate segment 211 is the first side 215a; the main body 241 covers at least a portion of the outer plate surface 214 of the second plate segment 212; the flange 242 covers at least the first side 215a.

[0087] As mentioned above, the inner side of the vent 101 points towards the interior of the heat exchange device 100 or the side near the receiving cavity 102, while the outer side of the vent 101 points towards the exterior of the device or the side away from the receiving cavity 102. The sound-absorbing plate 210 has a bent structure and includes a first plate segment 211 and a second plate segment 212. The first plate segment 211 is relatively close to the inner side of the vent 101, and the second plate segment 212 is relatively close to the outer side of the vent 101. The end of the second plate segment 212 away from the first plate segment 211 has a first side surface 215a, which is located at the free end edge of the second plate segment 212 and is the outermost end face of the sound-absorbing plate 210 in the second direction. When multiple sound-absorbing plates 210 are arranged sequentially along the first direction and in the first posture, the second plate segments 212 of adjacent sound-absorbing plates 210 are spliced ​​or overlapped with each other, and each first side surface 215a together constitutes the outer boundary of the vent 101.

[0088] The protective component 240 includes a main body 241 and a flange 242. The main body 241 covers the outer surface 214 of the sound-absorbing plate 210, and at least partially covers the outer surface 214 of the second plate segment 212, i.e., the main body 241 covers the side surface of the second plate segment 212 facing the outside of the equipment. The flange 242 extends from the edge of the main body 241 by bending, and at least covers the first side surface 215a of the second plate segment 212. The flange 242 can be fitted or clearance-fitted with the first side surface 215a, providing a covering protection for the free end edge of the second plate segment 212. By covering the first side surface 215a with the flange 242, when the sound-absorbing plate 210 is in the first posture, the flange 242 can effectively prevent external moisture, dust, or foreign objects from seeping in from the splicing gap between adjacent sound-absorbing plates 210 or from the gap between the edge of the sound-absorbing plate 210 and the mounting frame 230. When multiple sound-absorbing panels 210 are arranged sequentially along the first direction and in the first posture, the flanged portions 242 of the protective components 240 on adjacent sound-absorbing panels 210 can abut or overlap each other to form a continuous outer edge protective barrier.

[0089] This embodiment provides a protective covering for the outermost edge of the sound-absorbing plate 210 by having the main body 241 cover the outer side 214 of the second plate segment 212 and the flange 242 cover the first side 215a of the second plate segment 212. This helps to reduce the intrusion of external environmental factors from the gaps at the end of the sound-absorbing plate 210, thereby improving the structural protection capability of the free end of the sound-absorbing plate 210, as well as the sealing performance and waterproof and dustproof effect of the vent 101 when it is closed.

[0090] In some embodiments, please refer to Figures 3 to 6 The sound-absorbing plate 210 is a porous sound-absorbing plate.

[0091] The sound-absorbing plate 210 is made of porous material or has multiple through-hole structures on its surface, forming a porous sound-absorbing plate. The porous sound-absorbing plate can be a microporous plastic plate or a sintered fiberboard, or it can be processed from a metal or plastic substrate through punching, laser drilling, or other methods. The pores on the porous sound-absorbing plate can be circular, elongated, or irregular. The diameter, porosity, and distribution density of the pores are set according to the noise reduction requirements and are not specifically limited here.

[0092] The porous sound-absorbing panel 210 comprises a first section 211 and a second section 212, both of which are porous structures. When sound waves propagate to the surface of the porous sound-absorbing panel, they enter the pores, which convert sound energy into heat energy, thus achieving sound absorption and noise reduction. When the sound-absorbing panel 210 is in its first position (i.e., the vent 101 is closed), multiple porous sound-absorbing panels are spliced ​​or overlapped together. The porous structure itself can absorb residual noise transmitted through the sound-absorbing panel 210, further reducing noise propagation. When the sound-absorbing panel 210 is in its second position (i.e., the vent 101 is open), airflow passes through the ventilation gap 201 between adjacent sound-absorbing panels 210. The porous structure of the porous sound-absorbing panel can effectively absorb airflow noise generated at the ventilation gap 201, while the porous surface helps reduce airflow resistance and wind noise. Furthermore, the porous sound-absorbing plate is lighter than a solid plate, which helps reduce the load on the drive assembly 220 and improves the response speed and operational reliability of the sound-absorbing plate 210 during attitude switching. The porous structure can also be used in conjunction with the protective component 240, which covers the outer surface 214 of the porous sound-absorbing plate, and can reduce the blockage of the pores or erosion of the porous structure by external foreign objects.

[0093] In this embodiment, by setting the silencing plate 210 as a porous silencing plate, the sound absorption characteristics of the porous structure are utilized to absorb residual noise when the silencing plate 210 is in the closed state and reduce airflow noise when it is in the open state. This is beneficial to improving the noise reduction performance of the silencing device 200 under all operating conditions. At the same time, the porous structure reduces the weight of the silencing plate 210, which is beneficial to improving the response speed of attitude switching and the reliability of operation.

[0094] It is understood that, during the product lifecycle of the energy storage device 10, since the silencing device 200 can be manufactured and sold as a separate product, this application also proposes a silencing device 200. The silencing device 200 has the same advantages as the aforementioned embodiments, and will not be described again here.

[0095] In some embodiments, please refer to Figures 2 to 4 The silencing device 200 includes multiple silencing plates 210, which can be switched between a first posture and a second posture. When the multiple silencing plates 210 are in the first posture, they cooperate to close the vent 101. When at least one silencing plate 210 is in the second posture, a ventilation gap 201 is defined between the silencing plate 210 in the second posture and the side wall of the adjacent silencing plate 210 or the vent 101, so as to open the vent 101.

[0096] In some embodiments, please refer to Figure 3 The silencing device 200 also includes a mounting frame 230, and each silencing plate 210 is rotatably connected to the mounting frame 230. When the multiple silencing plates 210 are in the first position, the multiple silencing plates 210 are spliced ​​or overlapped with each other to close the ventilation opening 101. When the multiple silencing plates 210 are in the second position, any two adjacent silencing plates 210 are spaced apart to define multiple ventilation gaps 201 to open the ventilation opening 101.

[0097] In some embodiments, please refer to Figure 2 and Figure 3 The silencing device 200 also includes a drive assembly 220, which includes a drive component 221 and a linkage component 222. The mounting frame 230 is provided with a pivot hole 231 and a guide groove 232. The silencing plate 210 is provided with a pivot shaft 260 and a linkage shaft 270. The pivot shaft 260 passes through the pivot hole 231, and the linkage shaft 270 passes through the guide groove 232. The linkage shaft 270 is connected to the linkage component 222. The drive component 221 is used to drive the linkage component 222 to move, and drives the silencing plate 210 to rotate around the pivot shaft 260 through the linkage shaft 270.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, include: The main body of the device, including the battery; A heat exchange device, located in the main body of the equipment, is used to regulate the operating temperature of the battery; the heat exchange device is equipped with a vent. as well as A noise reduction device is provided at the ventilation opening. The noise reduction device includes multiple noise reduction plates, which can switch between a first posture and a second posture. When all of the aforementioned sound-absorbing panels are in the first position, the multiple sound-absorbing panels cooperate to close the ventilation opening; When at least one of the sound-absorbing plates is in the second posture, a ventilation gap is defined between the sound-absorbing plate in the second posture and the adjacent sound-absorbing plate or the sidewall of the vent, so as to open the vent.

2. The energy storage device as described in claim 1, characterized in that, Each of the aforementioned sound-absorbing plates is rotatable relative to the heat exchange device; When the plurality of sound-absorbing panels are in the first posture, the plurality of sound-absorbing panels are spliced ​​or overlapped with each other to close the ventilation opening; When the plurality of the sound-absorbing plates are in the second posture, any two adjacent sound-absorbing plates are spaced apart to define a plurality of ventilation gaps.

3. The energy storage device as described in claim 2, characterized in that, The plurality of sound-absorbing plates are arranged sequentially along a first direction, and the rotation axis of each sound-absorbing plate is substantially perpendicular to the first direction; the rotation axes of the plurality of sound-absorbing plates are substantially parallel.

4. The energy storage device as described in claim 3, characterized in that, The distance between the rotation axes of adjacent sound-absorbing plates shall be no less than 30 mm and no more than 120 mm.

5. The energy storage device according to any one of claims 1 to 4, characterized in that, The noise reduction device further includes a drive component, which is connected to the plurality of noise reduction plates and is used to drive the plurality of noise reduction plates to switch between the first posture and the second posture.

6. The energy storage device as described in claim 5, characterized in that, The drive assembly includes a drive component and a linkage component; the plurality of the sound-absorbing plates are respectively connected to the linkage component; The driving component is used to drive the linkage component to move, so as to drive the multiple sound-absorbing plates to move synchronously.

7. The energy storage device as described in claim 6, characterized in that, The silencing device also includes a mounting frame, which is installed on the heat exchange device at the position corresponding to the vent. The plurality of the sound-absorbing plates are rotatably connected to the mounting frame.

8. The energy storage device as described in claim 7, characterized in that, The mounting frame is provided with a pivot hole and a guide groove, and the sound-absorbing plate is provided with a pivot and a linkage shaft; The rotating shaft passes through the rotating shaft hole; the linkage shaft passes through the guide groove, and the linkage shaft is connected to the linkage component for transmission.

9. The energy storage device as described in claim 8, characterized in that, The vent has an inner side and an outer side, and the direction from the inner side to the outer side is a second direction; the sound-absorbing plate includes a first plate segment and a second plate segment arranged sequentially along the second direction and connected at an angle; The linkage shaft is located at the end of the first plate segment away from the second plate segment; The rotating shaft is located at one end of the first plate segment near the second plate segment, or the rotating shaft is located at one end of the second plate segment near the first plate segment.

10. The energy storage device as described in claim 9, characterized in that, The included angle between the first plate segment and the second plate segment is not less than 60° and not greater than 120°; The length of the first plate segment along the second direction is not greater than the length of the second plate segment along the second direction.

11. The energy storage device as described in claim 1, characterized in that, The heat exchange device has a receiving cavity communicating with the vent; the sound-absorbing plate has an inner plate surface facing the receiving cavity and an outer plate surface opposite to the inner plate surface; The silencing device also includes a protective component, which is applied to the outer surface of the silencing plate.

12. The energy storage device as described in claim 11, characterized in that, The plurality of the sound-absorbing plates are arranged sequentially along the first direction, and the sound-absorbing plates and the protective components are arranged in a one-to-one correspondence; When the plurality of the sound-absorbing panels are in the first posture, the plurality of the protective components overlap sequentially along the first direction.

13. The energy storage device as described in claim 12, characterized in that, The sound-absorbing plate also has multiple sides connecting the outer side panel and the inner side panel; The protective component includes a main body and a flanged portion disposed on the main body, the main body covering the outer side surface of the sound-absorbing plate; the flanged portion covering at least one side surface of the sound-absorbing plate.

14. The energy storage device as described in claim 13, characterized in that, The vent has an inner side and an outer side, and the direction from the inner side to the outer side is a second direction; The sound-absorbing plate includes a first plate segment and a second plate segment arranged sequentially along the second direction and connected at an angle; the side of the second plate segment away from the first plate segment is the first side segment; The main body covers at least a portion of the outer side surface of the second plate segment; the flanged portion covers at least the first side surface.

15. The energy storage device as described in claim 1, characterized in that, The sound-absorbing plate is a porous sound-absorbing plate.

16. A silencing device for use at a ventilation opening, characterized in that, The noise reduction device includes multiple noise reduction plates, which can be switched between a first posture and a second posture. When the multiple sound-absorbing panels are in the first position, the multiple sound-absorbing panels cooperate to close the ventilation opening; When at least one of the sound-absorbing plates is in the second posture, a ventilation gap is defined between the sound-absorbing plate in the second posture and the adjacent sound-absorbing plate or the sidewall of the vent, so as to open the vent.

17. The silencing device as described in claim 16, characterized in that, The silencing device also includes a mounting frame, and each of the silencing plates is rotatably connected to the mounting frame; When the plurality of sound-absorbing panels are in the first posture, the plurality of sound-absorbing panels are spliced ​​or overlapped with each other to close the ventilation opening; When the plurality of the sound-absorbing plates are in the second posture, any two adjacent sound-absorbing plates are spaced apart to define a plurality of ventilation gaps.

18. The silencing device as described in claim 17, characterized in that, The noise reduction device further includes a drive assembly, which includes a drive component and a linkage component; The mounting frame is provided with a pivot hole and a guide groove, and the sound-absorbing plate is provided with a pivot and a linkage shaft; The rotating shaft passes through the rotating shaft hole, the linkage shaft passes through the guide groove, and the linkage shaft is connected to the linkage component in a transmission manner; The driving component is used to drive the linkage component to move, and drives the muffler plate to rotate around the rotating shaft through the linkage shaft.

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