Energy storage device

Abstract

The invention provides an energy storage device, and relates to the technical field of energy storage. The energy storage device comprises a box body, a ventilation pipe connected to the box body, a fan arranged in the ventilation pipe and an air guide pipe connected to the ventilation pipe. The ventilation pipe is communicated with the box body, the fan can generate airflow flowing through the ventilation pipe and reaching the interior of the box body, the air guide pipe is located on the side, away from the box body, of the fan and communicated with the ventilation pipe, and the inner diameter of the air guide pipe is gradually increased in the flowing direction of the airflow. In the energy storage device provided by the invention, the cross section in the air guide pipe is gradually expanded towards the direction of the box body, so that some sound waves with specific frequencies propagated along the ventilation pipe and the air guide pipe are reflected, interfered and the like in the air guide pipe, the noise reduction effect is realized, and the noise pollution problem of the energy storage device is improved.

Description

Technical Field

[0001] This application relates to the technical field of energy storage, and particularly to an energy storage device. Background Art

[0002] The information disclosed in this background art section is only for enhancing the understanding of the overall background art of the present disclosure, and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art.

[0003] In order to maintain good working performance, a fan is usually configured in the energy storage device. The fan can deliver air flow into the box body of the energy storage device for heat dissipation, but it is inevitable to generate noise, resulting in the problem of noise pollution. How to reduce the noise of the energy storage device is a technical problem urgently to be solved in the current art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide an energy storage device, aiming to solve the technical problem of how to improve the noise pollution of the energy storage device.

[0005] To achieve the above purpose, the technical solution adopted in this application is as follows:

[0006] An embodiment of this application provides an energy storage device, including:

[0007] A box body;

[0008] A ventilation pipe, connected to the box body, and the ventilation pipe is communicated with the box body;

[0009] A fan, arranged in the ventilation pipe, and the fan can generate an air flow flowing through the ventilation pipe and reaching the inside of the box body;

[0010] A guiding air pipe, connected to the ventilation pipe, the guiding air pipe is located on the side of the fan away from the box body, the guiding air pipe is communicated with the ventilation pipe, and the inner diameter of the guiding air pipe gradually increases along the flowing direction of the air flow.

[0011] In one embodiment, the energy storage device further includes a speaker and a pick-up microphone electrically connected to the speaker. The speaker and the pick-up microphone are arranged in the ventilation pipe. The pick-up microphone is located between the fan and the guiding air pipe, the speaker is located between the fan and the guiding air pipe, and the pick-up microphone and the guiding air pipe are coaxially arranged.

[0012] In one embodiment, the minimum inner diameter of the guiding air pipe is smaller than the effective coverage diameter of the pick-up microphone.

[0013] In one embodiment, the energy storage device further includes a bracket disposed within the ventilation pipe. The fan includes a driving member and a fan blade connected to each other. The fan blade is located on a side of the driving member close to the box body. The driving member is connected to the bracket and is capable of driving the fan blade to rotate. The pickup is connected to a side of the driving member away from the fan blade.

[0014] In one embodiment, the energy storage device further includes a sound absorption layer connected between the inner peripheral side of the ventilation pipe and the bracket.

[0015] In one embodiment, the energy storage device further includes a first shock absorption layer connected between the bracket and the sound absorption layer.

[0016] In one embodiment, the speaker is connected to the sound absorption layer. A plurality of speakers are provided, and the plurality of speakers are arranged at intervals along the circumference of the pickup.

[0017] In one embodiment, the air duct is located within the ventilation pipe. The air duct and the ventilation pipe are coaxially arranged, and the outer peripheral side of the air duct is attached to the inner peripheral side of the ventilation pipe.

[0018] In one embodiment, the energy storage device further includes a cooling mechanism disposed within the ventilation pipe. The cooling mechanism is located between the fan and the box body and includes a first liquid cooling plate and a second liquid cooling plate arranged at intervals. The first liquid cooling plate and the second liquid cooling plate are filled with a cooling medium. A plurality of first through holes are provided on the first liquid cooling plate, and a plurality of second through holes are provided on the second liquid cooling plate.

[0019] In one embodiment, the cooling mechanism further includes a plurality of liquid cooling pipes. Each liquid cooling pipe is connected between the first liquid cooling plate and the second liquid cooling plate. Adjacent two liquid cooling pipes are arranged at intervals. The liquid cooling pipes are filled with the cooling medium. The first liquid cooling plate is provided with a liquid inlet end, and the second liquid cooling plate is provided with a liquid outlet end. The liquid inlet end is used for inputting the cooling medium, and the liquid outlet end is used for outputting the cooling medium.

[0020] In one embodiment, the cooling mechanism further includes a sound absorption layer, a second shock absorption layer and a third shock absorption layer. The sound absorption layer is connected to the inner peripheral side of the ventilation pipe. The second shock absorption layer is connected between the sound absorption layer and the first liquid cooling plate. The third shock absorption layer is connected between the sound absorption layer and the second liquid cooling plate.

[0021] The beneficial effects of the present application are as follows:

[0022] In the energy storage device provided by the present application, the fan can generate an air flow that passes through the ventilation pipe and reaches the inside of the box to dissipate heat from the environment inside the box. On this basis, a guiding air pipe is additionally provided. The guiding air pipe is connected to the ventilation pipe and is in communication with the ventilation pipe. At the same time, the guiding air pipe is located on the side of the fan away from the box, and the inner diameter of the guiding air pipe gradually increases along the flowing direction of the air flow, that is, the cross-section inside the guiding air pipe expands towards the direction of the box, so that certain specific frequency sound waves propagating along the ventilation pipe and the guiding air pipe are reflected and interfered inside the guiding air pipe, thereby achieving a noise reduction effect and improving the noise pollution problem of the energy storage device.

[0023] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0025] Figure 1 Shows a schematic perspective view of the energy storage device in an embodiment of the present application;

[0026] Figure 2 Shows Figure 1 partial cross-sectional structure schematic Figure 1 ;

[0027] Figure 3 Shows Figure 1 partial cross-sectional structure schematic Figure 2 ;

[0028] Figure 4 Shows Figure 3 the enlarged structure schematic of area A in

[0029] MAIN ELEMENT SYMBOL DESCRIPTION:

[0030] 100 - Energy storage device; 110 - Box body; 120 - Ventilation pipe; 130 - Fan; 131 - Driving member; 132 - Blades; 140 - Air duct; 151 - Speaker; 152 - Pickup; 153 - Bracket; 1531 - Bracket main body; 1532 - Support rod; 154 - Sound absorption layer; 155 - First shock absorption layer; 156 - Second shock absorption layer; 157 - Third shock absorption layer; 158 - Mounting frame; 159 - Dust cover; 160 - Cooling mechanism; 161 - First liquid cooling plate; 1611 - First through hole; 162 - Second liquid cooling plate; 1621 - Second through hole; 163 - Liquid cooling pipe; X - Flow direction. Detailed implementation manners

[0031] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0032] In the description of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0033] In addition, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first feature and the second feature are in direct contact, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0034] In the description of this application, terms such as "first", "second", etc. are used to distinguish different objects, and cannot be construed as indicating or implying a specific order or primary-secondary relationship, nor implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0035] In the description of this application, unless otherwise clearly specified and limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the description of this application, the term "and / or" indicates that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0037] In the description of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximately parallelism commonly recognized in engineering; at the same time, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximately perpendicularity commonly recognized in engineering. Exemplarily, when the included angle between two directions is 80° - 90°, the two directions can be considered perpendicular; when the included angle between two directions is 0° - 10°, the two directions can be considered parallel.

[0038] An energy storage device is an integrated energy storage product that integrates a battery energy storage system, a battery management system, an energy conversion system, a fire protection system, a thermal management system, etc. into a box for easy transportation and installation. The thermal management system is used to keep the energy storage device at a normal operating temperature and is also one of the main sources of noise.

[0039] A fan is usually configured in the thermal management system. The fan can deliver air flow into the box of the energy storage device for heat dissipation, but it is inevitable to generate noise, resulting in the problem of noise pollution (the noise mainly comes from the noise generated by air flow and the noise generated by fan vibration). How to reduce the noise of the energy storage device is a technical problem that urgently needs to be solved in the current art. In addition, currently, relying on the fan to deliver air flow into the box, the heat dissipation effect is not ideal and it is difficult to meet the heat dissipation requirements of the energy storage device.

[0040] To solve the above technical problems, an embodiment of the present application provides an energy storage device, which relates to the technical field of energy storage and is mainly used for storing electric energy and supplying power to electrical devices. It should be noted that the energy storage device can be an energy storage container, an energy storage power station, a combined cabinet of diesel generator and energy storage, etc., and no specific limitation is made here.

[0041] As Figures 1 to 3 shown, the energy storage device 100 provided in this embodiment includes: a box body 110, a ventilation pipe 120, a fan 130, and a duct 140.

[0042] Among them, the ventilation pipe 120 is connected to the box body 110, and the ventilation pipe 120 is in communication with the box body 110; the fan 130 is arranged in the ventilation pipe 120, and the fan 130 can generate an air flow that flows through the ventilation pipe 120 and reaches the inside of the box body 110; the duct 140 is connected to the ventilation pipe 120, the duct 140 is located on the side of the fan 130 away from the box body 110, the duct 140 is in communication with the ventilation pipe 120, and the inner diameter of the duct 140 gradually increases along the air flow direction X.

[0043] It should be noted that "the fan 130 is arranged in the ventilation pipe 120" can be understood as: the fan 130 is directly connected to the inner peripheral side of the ventilation pipe 120, or the fan 130 is indirectly connected to the inner peripheral side of the ventilation pipe 120 through some medium, and no specific limitation is made here; "the duct 140 is connected to the ventilation pipe 120" can be understood as: the duct 140 is connected to the inner peripheral side of the ventilation pipe 120, or a part of the duct 140 is sleeved on the ventilation pipe 120 (that is, the inner peripheral side of the duct 140 is connected to the outer peripheral side of the ventilation pipe 120), or one end of the duct 140 is butted against one end of the ventilation pipe 120, and no specific limitation is made here. The "air flow direction X" can be understood as the direction from the ventilation pipe 120 to the box body 110, or the direction from the duct 140 to the ventilation pipe 120. The "inner diameter of the duct 140" refers to the inner diameter of the duct 140, that is, the duct 140 has a ventilation hole, and the diameter of the ventilation hole is the inner diameter of the duct 140.

[0044] It can be understood that in the energy storage device 100 provided in this embodiment, the fan 130 can generate an air flow that flows through the ventilation pipe 120 and reaches the inside of the box body 110 to dissipate heat from the environment inside the box body 110. On this basis, a guide air pipe 140 is additionally provided. The guide air pipe 140 is connected to the ventilation pipe 120 and is in communication with the ventilation pipe 120. At the same time, the guide air pipe 140 is located on the side of the fan 130 away from the box body 110. The inner diameter of the guide air pipe 140 gradually increases along the air flow direction X, that is, the cross-section inside the guide air pipe 140 gradually expands in the direction towards the box body 110 (that is, the air guide holes of the guide air pipe 140 gradually expand in the direction towards the box body 110), so that certain specific frequency sound waves propagating along the ventilation pipe 120 and the guide air pipe 140 are reflected, interfered, etc. inside the guide air pipe 140, thereby achieving a noise reduction effect and improving the noise pollution problem of the energy storage device 100.

[0045] It should be noted that the energy storage device 100 provided in this embodiment adopts the design that the inner diameter of the guide air pipe 140 gradually increases along the air flow direction X, rather than the design that the inner diameter of the guide air pipe 140 gradually decreases along the air flow direction X. The reason is that such a design will cause the cross-section inside the guide air pipe 140 to gradually shrink in the direction towards the box body 110 (that is, the air guide holes of the guide air pipe 140 gradually shrink in the direction towards the box body 110). When the flow rate remains unchanged, the flow velocity of the air flow will increase, similar to a "wind corridor". The air flow with an increased flow velocity will generate more noise, which is not conducive to noise reduction of the energy storage device 100.

[0046] As Figure 1 and Figure 3 shown, in one embodiment, the energy storage device 100 further includes a speaker 151 and a pickup 152 electrically connected to the speaker 151. The speaker 151 and the pickup 152 are arranged inside the ventilation pipe 120. The pickup 152 is located between the fan 130 and the guide air pipe 140, and the speaker 151 is located between the fan 130 and the guide air pipe 140. The pickup 152 and the guide air pipe 140 are coaxially arranged.

[0047] It should be noted that "the speaker 151 and the pickup 152 are arranged inside the ventilation pipe 120" can be understood as: the speaker 151 or the pickup 152 is directly connected to the inner peripheral side of the ventilation pipe 120, or indirectly connected to the inner peripheral side of the ventilation pipe 120 through some media, and no specific limitation is made here.

[0048] It can be understood that the noise in the sound - generating area can be captured by the pickup 152. After the noise data is processed using digital signal processing (DSP) technology, the speaker 151 is controlled to generate a noise - canceling sound wave in the sound - generating area that has the opposite phase and the same amplitude as the noise sound wave. When the two sound waves are superimposed, they will cancel each other out, thus achieving the effect of active noise reduction. At the same time, by coaxially arranging the pickup 152 and the air duct 140, the pickup 152 can more comprehensively capture the noise generated when the air flow is sucked into the box body 110 by the fan 130 from the air duct 140, so as to achieve a better active noise - reduction effect.

[0049] Furthermore, the minimum inner diameter of the air duct 140 is smaller than the effective coverage diameter of the pickup 152.

[0050] It should be noted that the above - mentioned pickup 152 refers to an omnidirectional microphone, and its sound - pickup range is a circular area centered on itself and bounded by the effective coverage diameter.

[0051] It can be understood that on the basis of the coaxial arrangement of the pickup 152 and the air duct 140, by restricting the minimum inner diameter of the air duct 140 to be smaller than the effective coverage diameter of the pickup 152, the main divergence area of the air - flow noise generated by the fan 130 can be restricted within the effective capture range of a single pickup 152. In this way, there is no need to arrange multiple pickups 152 in the ventilation pipe 120 for capture, and only one pickup 152 is required to meet the requirements of active noise reduction, thus significantly reducing the production cost of the energy - storage device 100.

[0052] As Figures 1 to 3 shown, furthermore, the energy - storage device 100 further includes a bracket 153. The bracket 153 is arranged in the ventilation pipe 120. The fan 130 includes a driving member 131 and a fan blade 132 that are connected. The fan blade 132 is located on the side of the driving member 131 close to the box body 110. The driving member 131 is connected to the bracket 153 and can drive the fan blade 132 to rotate. The pickup 152 is connected to the side of the driving member 131 away from the fan blade 132.

[0053] It should be noted that "the bracket 153 is arranged in the ventilation pipe 120" can be understood as: the bracket 153 is directly connected to the inner peripheral side of the ventilation pipe 120, or the bracket 153 is indirectly connected to the inner peripheral side of the ventilation pipe 120 through some medium, and no specific limitation is made here.

[0054] Exemplarily, the driving member 131 can be a rotating motor, a driving motor, or other elements that can output rotational motion, and no specific limitation is made here.

[0055] It can be understood that by connecting the pickup 152 to the side of the driving member 131 away from the fan blade 132, it will neither interfere with the rotation of the fan blade 132, nor is it necessary to additionally add an installation structure for installing the pickup 152 in the ventilation pipe 120, saving the use of the installation structure, thereby reducing the production cost of the energy storage device 100.

[0056] It should be noted that the above-mentioned fan 130 is not limited to the combination form of the driving member 131 and the fan blade 132 (i.e., the fan with a fan blade structure). The fan 130 can also be a positive displacement fan (such as a Roots blower, a screw blower, etc.), a special structure fan (such as a magnetic levitation centrifugal fan, an ejector fan, an ion fan, etc.) and other fans without a fan blade structure. No specific restrictions are imposed on the type of the fan 130 here.

[0057] As Figures 1 to 3 shown, furthermore, the energy storage device 100 further includes a sound absorption layer 154, and the sound absorption layer 154 is connected between the inner peripheral side of the ventilation pipe 120 and the bracket 153.

[0058] Exemplarily, the material of the sound absorption layer 154 can be a porous fiber material, foam, plastic, etc., and no specific restrictions are made here.

[0059] It can be understood that by connecting the sound absorption layer 154 between the inner peripheral side of the ventilation pipe 120 and the bracket 153, that is, the sound absorption layer 154 covers the inner peripheral side of the ventilation pipe 120 and is located between the ventilation pipe 120 and the bracket 153, thereby using the porous characteristics of the sound absorption layer 154 to absorb the airflow noise and vibration noise generated by the fan 130 to achieve the effect of passive noise reduction.

[0060] It should be noted that the sound absorption layer 154 can also further cover the inner peripheral side of the air duct 140, thereby expanding the sound absorption range to the position of the air duct 140.

[0061] As Figures 1 to 4 shown, still further, the energy storage device 100 further includes a first shock absorption layer 155, and the first shock absorption layer 155 is connected between the bracket 153 and the sound absorption layer 154.

[0062] Exemplarily, the material of the first shock absorption layer 155 can be a material with elastic deformation ability such as rubber, silica gel, etc. The same is true for the second shock absorption layer 156 and the third shock absorption layer 157 mentioned below. No specific restrictions are imposed on the structure or material of the shock absorption layer here.

[0063] It can be understood that by connecting the first shock absorption layer 155 between the bracket 153 and the sound absorption layer 154, the first shock absorption layer 155 can buffer the vibration generated by the operation of the fan 130, thereby reducing the vibration noise generated by the vibration of the fan 130.

[0064] As Figure 3 shown, further, the speaker 151 is connected to the sound absorption layer 154. A plurality of speakers 151 are provided, and the plurality of speakers 151 are arranged at intervals along the circumferential direction of the pickup 152.

[0065] Exemplarily, the number of the speakers 151 may be two, three, four, five, etc., and no specific limitation is made herein.

[0066] It can be understood that by arranging a plurality of speakers 151 at intervals along the circumferential direction of the pickup 152, that is, the plurality of speakers 151 surround the pickup 152. In this way, the plurality of speakers 151 simultaneously generate sound cancellation sound waves with opposite phases and the same amplitudes as the noise sound waves in the sound generation area, which can better cancel the noise sound waves.

[0067] As Figure 2 and Figure 3 shown, further, the bracket 153 includes a bracket main body 1531 and a plurality of support rods 1532. The bracket main body 1531 is sleeved on the driving member 131, and the plurality of support rods 1532 are arranged at intervals along the circumferential direction of the bracket main body 1531. Each support rod 1532 is connected between the bracket main body 1531 and the first shock absorption layer 155.

[0068] It can be understood that by arranging the plurality of support rods 1532 at intervals along the circumferential direction of the bracket main body 1531, a gap can be formed between two adjacent support rods 1532 to facilitate the passage of air flow.

[0069] As Figure 3 shown, in one embodiment, the air duct 140 is located inside the ventilation duct 120. The air duct 140 and the ventilation duct 120 are coaxially arranged, and the outer peripheral side of the air duct 140 is attached to the inner peripheral side of the ventilation duct 120.

[0070] It can be understood that by coaxially arranging the air duct 140 and the ventilation duct 120 and arranging the air duct 140 inside the ventilation duct 120, not only can the path of the air flow be shortened to achieve more efficient heat dissipation, but also the overall size after the assembly of the ventilation duct 120 and the air duct 140 is shortened, making the structure more compact; at the same time, by attaching the outer peripheral side of the air duct 140 to the inner peripheral side of the ventilation duct 120, the possibility of generating a gap between the air duct 140 and the ventilation duct 120 can be reduced, which can not only reduce the occurrence of air leakage, but also reduce the occurrence of noise generated by the air flow flowing through the gap.

[0071] It should be noted that on the basis of providing a pickup 152 and a speaker 151, the pickup 152 and the air duct 140 are coaxially arranged. The air duct 140 is located inside the ventilation duct 120, and the air duct 140 and the ventilation duct 120 are coaxially arranged. The outer peripheral side of the air duct 140 is attached to the inner peripheral side of the ventilation duct 120. At the same time, a chamfer is provided at one end of the air duct 140 close to the fan 130, and the air duct 140 is smoothly connected to the inner peripheral side of the ventilation duct 120 through the chamfer. In this way, the pickup 152 can capture airflow noise more comprehensively.

[0072] Furthermore, the energy storage device 100 further includes an adhesive layer, such as double-sided adhesive paper, glue layer, etc. The adhesive layer is connected between the outer peripheral side of the air duct 140 and the inner peripheral side of the ventilation duct 120 to limit the relative movement between the ventilation duct 120 and the air duct 140, thereby reducing the possibility of vibration noise generated due to their relative movement.

[0073] As Figures 1 to 3 shown, in one embodiment, the energy storage device 100 further includes a cooling mechanism 160 disposed inside the ventilation duct 120. The cooling mechanism 160 is located between the fan 130 and the box body 110, and includes a first liquid cooling plate 161 and a second liquid cooling plate 162 arranged at intervals. The first liquid cooling plate 161 and the second liquid cooling plate 162 are filled with a cooling medium. A plurality of first through holes 1611 are provided on the first liquid cooling plate 161, and a plurality of second through holes 1621 are provided on the second liquid cooling plate 162.

[0074] Exemplarily, the cooling medium can be cooling water, cooling oil, liquid ammonia, Freon, etc., and the type of the cooling medium is not specifically limited herein.

[0075] It can be understood that since the first liquid cooling plate 161 and the second liquid cooling plate 162 are provided between the fan 130 and the box body 110, the first liquid cooling plate 161 and the second liquid cooling plate 162 are filled with a cooling medium, and a plurality of first through holes 1611 are provided on the first liquid cooling plate 161, and a plurality of second through holes 1621 are provided on the second liquid cooling plate 162. In this way, when the airflow generated by the fan 130 flows through the first through holes 1611 and the second through holes 1621, heat exchange occurs with the cooling medium in each liquid cooling plate (the cooling medium transfers cold to the airflow, and the airflow transfers heat to the cooling medium), so that the airflow has a lower temperature when it reaches the inside of the box body 110, thereby being able to better dissipate heat from the environment inside the box body 110.

[0076] As Figure 2 and Figure 3As shown, further, the cooling mechanism 160 further includes a plurality of liquid cooling tubes 163. Each liquid cooling tube 163 is connected between the first liquid cooling plate 161 and the second liquid cooling plate 162. Adjacent two liquid cooling tubes 163 are arranged at intervals. The liquid cooling tube 163 is filled with a cooling medium, so that when the air flow generated by the fan 130 flows through the area between the first liquid cooling plate 161 and the second liquid cooling plate 162, it can exchange heat with the cooling medium in the liquid cooling tube 163. At the same time, a liquid inlet end is provided on the first liquid cooling plate 161, and a liquid outlet end is provided on the second liquid cooling plate 162. The liquid inlet end is used to input the cooling medium, and the liquid outlet end is used to output the cooling medium, so as to realize that the cooling medium circulates through the first liquid cooling plate 161, the liquid cooling tube 163 and the second liquid cooling plate 162 in sequence, thereby continuously cooling the air flow generated by the fan 130.

[0077] It should be noted that the liquid inlet end and the liquid outlet end can be externally connected to a circulating cooler, and the cooling medium can be automatically circulated through the circulating cooler. In addition, the liquid cooling tube 163 can be arranged in a spiral shape or in a serpentine shape, so as to increase the contact area between the air flow and each liquid cooling tube 163, thereby enabling more sufficient heat exchange to effectively reduce the temperature of the air flow reaching the inside of the box body 110.

[0078] As Figure 1 and Figure 3 shown, further, the cooling mechanism 160 further includes a sound-absorbing layer 154, a second shock-absorbing layer 156 and a third shock-absorbing layer 157. The sound-absorbing layer 154 is connected to the inner peripheral side of the ventilation pipe 120. The second shock-absorbing layer 156 is connected between the sound-absorbing layer 154 and the first liquid cooling plate 161. The third shock-absorbing layer 157 is connected between the sound-absorbing layer 154 and the second liquid cooling plate 162.

[0079] It can be understood that through the arrangement of the second shock-absorbing layer 156 and the third shock-absorbing layer 157, the two can jointly buffer the vibration generated by the cooling mechanism 160, thereby reducing the vibration noise generated during the operation of the cooling mechanism 160.

[0080] As Figure 1 and Figure 3 shown, in one embodiment, the energy storage device 100 further includes a mounting frame 158 and a dust-proof cover 159. The mounting frame 158 is arranged around the ventilation pipe 120 and is detachably connected to the box body 110. The dust-proof cover 159 is connected to the side of the mounting frame 158 away from the box body 110 and covers the side of the air guide pipe 140 away from the fan 130.

[0081] Exemplarily, the detachable connection between the mounting frame 158 and the box body 110 can be a bolt connection, a snap connection, a quick-release member connection, etc., and no specific limitation is made here.

[0082] It can be understood that by covering the dust-proof cover 159 on the side of the air duct 140 away from the fan 130, foreign impurities from the outside can be blocked from entering the air duct 140, so as to reduce the adverse effects of the external environment on the energy storage device 100. At the same time, through the detachable connection between the mounting frame 158 and the box body 110, it is convenient to maintain or replace the dust-proof cover 159.

[0083] In summary, for the energy storage device 100 provided by the embodiment of the present application, when the driving member 131 drives the fan blade 132 to rotate, the air flow in the external environment flows through the air duct 140, the first liquid cooling plate 161, the liquid cooling pipe 163 and the second liquid cooling plate 162 in sequence in the ventilation pipe 120 and reaches the inside of the box body 110, so as to blow cold air into the environment inside the box body 110 for air-cooled heat dissipation; at the same time, the air duct 140, the sound-absorbing layer 154, the first shock-absorbing layer 155, the second shock-absorbing layer 156 and the third shock-absorbing layer 157 form a passive noise reduction component to achieve passive noise reduction processing for the energy storage device 100; the pickup 152 and the speaker 151 form an active noise reduction component to achieve active noise reduction processing for the energy storage device 100. Through the combination of active noise reduction and passive noise reduction, the noise pollution problem of the energy storage device 100 is more effectively improved.

[0084] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0085] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An energy storage device, characterized in that, Comprising: A box body (110); A ventilation pipe (120), connected to the box body (110), and the ventilation pipe (120) is in communication with the box body (110); A fan (130), arranged in the ventilation pipe (120), and the fan (130) can generate an air flow that flows through the ventilation pipe (120) and reaches the inside of the box body (110); A duct (140), connected to the ventilation pipe (120), the duct (140) is located on the side of the fan (130) away from the box body (110), the duct (140) is in communication with the ventilation pipe (120), and the inner diameter of the duct (140) gradually increases along the flow direction (X) of the air flow.

2. The energy storage device according to claim 1, characterized in that, The energy storage device further includes a speaker (151) and a microphone (152) electrically connected to the speaker (151), the speaker (151) and the microphone (152) are arranged in the ventilation pipe (120), the microphone (152) is located between the fan (130) and the duct (140), the speaker (151) is located between the fan (130) and the duct (140), and the microphone (152) and the duct (140) are coaxially arranged.

3. The energy storage device according to claim 2, characterized in that, The minimum inner diameter of the duct (140) is smaller than the effective coverage diameter of the microphone (152).

4. The energy storage device according to claim 2, characterized in that, The energy storage device further includes a bracket (153), the bracket (153) is arranged in the ventilation pipe (120), the fan (130) includes a driving member (131) and a fan blade (132) connected to each other, the fan blade (132) is located on the side of the driving member (131) close to the box body (110), the driving member (131) is connected to the bracket (153) and can drive the fan blade (132) to rotate, and the microphone (152) is connected to the side of the driving member (131) away from the fan blade (132).

5. The energy storage device according to claim 4, wherein The energy storage device further includes a sound absorption layer (154), and the sound absorption layer (154) is connected between the inner peripheral side of the ventilation pipe (120) and the bracket (153).

6. The energy storage device according to claim 5, characterized in that, The energy storage device further includes a first shock absorption layer (155), and the first shock absorption layer (155) is connected between the bracket (153) and the sound absorption layer (154).

7. The energy storage device according to claim 6, wherein, The speaker (151) is connected to the sound absorption layer (154), there are multiple speakers (151), and the multiple speakers (151) are arranged at intervals along the circumference of the microphone (152).

8. The energy storage device according to any one of claims 1 to 7, characterized in that The duct (140) is located in the ventilation pipe (120), the duct (140) and the ventilation pipe (120) are coaxially arranged, and the outer peripheral side of the duct (140) is attached to the inner peripheral side of the ventilation pipe (120).

9. The energy storage device according to any one of claims 1 to 7, characterized in that The energy storage device further includes a cooling mechanism (160) disposed in the ventilation pipe (120). The cooling mechanism (160) is located between the blower (130) and the box body (110), and includes a first liquid cooling plate (161) and a second liquid cooling plate (162) which are spaced apart from each other. The first liquid cooling plate (161) and the second liquid cooling plate (162) are filled with a cooling medium. A plurality of first through holes (1611) are provided on the first liquid cooling plate (161), and a plurality of second through holes (1621) are provided on the second liquid cooling plate (162).

10. The energy storage device according to claim 9, characterized in that, The cooling mechanism (160) further includes a plurality of liquid cooling pipes (163). Each liquid cooling pipe (163) is connected between the first liquid cooling plate (161) and the second liquid cooling plate (162). Adjacent two liquid cooling pipes (163) are spaced apart from each other. The liquid cooling pipes (163) are filled with the cooling medium. An inlet end is provided on the first liquid cooling plate (161), and an outlet end is provided on the second liquid cooling plate (162). The inlet end is used for inputting the cooling medium, and the outlet end is used for outputting the cooling medium.

11. The energy storage device according to claim 9, characterized in that, The cooling mechanism (160) further includes a sound absorption layer (154), a second shock absorption layer (156) and a third shock absorption layer (157). The sound absorption layer (154) is connected to the inner peripheral side of the ventilation pipe (120). The second shock absorption layer (156) is connected between the sound absorption layer (154) and the first liquid cooling plate (161). The third shock absorption layer (157) is connected between the sound absorption layer (154) and the second liquid cooling plate (162).

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