Heat exchange assembly, heat exchange apparatus, energy storage device and charging system

Abstract

A heat exchange assembly (101), a heat exchange apparatus, an energy storage device (10) and a charging system, relating to the technical field of energy storage. The heat exchange assembly (101) comprises a shell (110), a first heat exchanger (120) and an airflow guiding mechanism (130), wherein the shell (110) comprises a first wall (1101), and a first ventilation opening (112) is provided on the first wall (1101); the first heat exchanger (120) is arranged in the shell (110) and spaced apart from the first wall (1101), the first heat exchanger (120) being used for heat exchange with an external airflow; the airflow guiding mechanism (130) is arranged at the first ventilation opening (112), the airflow guiding mechanism (130) being used for guiding the airflow to flow through the first heat exchanger (120); and the shell (110) is provided with a sound-absorbing cavity (111) inside, the shell (110) further comprises a surrounding panel (115), which is arranged around the airflow guiding mechanism (130) and the first heat exchanger (120), the first wall (1101), the first heat exchanger (120) and the surrounding panel (115) enclosing the sound-absorbing cavity (111). Noise can be attenuated under the blocking and reflecting effects of the surrounding panel (115), the first wall (1101) and the first heat exchanger (120) that enclose the sound-absorbing cavity (111), such that noise propagating outwards from the heat exchange assembly (101) is reduced, improving the operating environment of the heat exchange assembly (101).

Description

Heat exchange assembly, heat exchange device, energy storage device and charging system TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, and in particular to a heat exchange assembly, a heat exchange device, an energy storage device and a charging system. BACKGROUND

[0002] The part provided in this part is merely background information related to the present application, which is not necessarily prior art.

[0003] The energy storage device can include a cabinet and a battery, which has a high energy density. The energy storage device can be equipped with a heat exchange device to regulate the temperature of the battery. When the heat exchange device is working, it has a large noise, which has a great influence on the working environment of the heat exchange device and the energy storage device.

[0004] SUMMARY

[0005] In view of the above problems, the present application provides a heat exchange assembly, a heat exchange device, an energy storage device and a charging system to at least alleviate the problem of large noise of the heat exchange device.

[0006] The first aspect of the present application provides a heat exchange assembly, comprising a shell, a first heat exchanger and an air flow guiding mechanism, the shell comprising a first wall, the first wall being provided with a first air vent; the first heat exchanger is arranged in the shell and is arranged in the first wall, the first heat exchanger is used for heat exchange with external air flow; the air flow guiding mechanism is arranged at the first air vent, the air flow guiding mechanism is used for guiding the air flow to flow through the first heat exchanger; the shell is provided with a sound absorbing cavity, and the shell further comprises a surrounding plate, the surrounding plate is arranged around the air flow guiding mechanism and the first heat exchanger, and the first wall, the first heat exchanger and the surrounding plate form the sound absorbing cavity.

[0007] In the technical scheme of the embodiment of the present application, the sound absorbing cavity is formed between the first wall and the first heat exchanger, and the noise generated during the operation of the heat exchange assembly can be processed in the sound absorbing cavity. Specifically, the noise can be attenuated at least under the blocking and reflecting action of the surrounding plate, the first wall and the first heat exchanger surrounding the sound absorbing cavity, so as to reduce the noise transmitted outward by the heat exchange assembly and improve the operating environment of the heat exchange assembly.

[0008] In addition, the heat exchange assembly according to the present application can also have the following additional technical features:

[0009] In some embodiments of the present application, the surrounding plate is arranged on the outer side of the first heat exchanger in the circumferential direction of the first heat exchanger, and the surrounding plate is sealingly connected with the first wall. In this embodiment of the heat exchange assembly, the sealing property of the sound absorption cavity is improved by arranging the surrounding plate and sealingly connecting the surrounding plate with the first wall, thereby improving the noise reduction effect of the sound absorption cavity. In addition, the entire first heat exchanger is arranged towards the sound absorption cavity, the area of the sound absorption cavity is large, and the noise generated by the airflow passing through the first heat exchanger can be reduced by the sound absorption cavity, thereby improving the noise reduction effect.

[0010] In some embodiments of the present application, the surrounding plate is at least partially arranged as a wall of the shell. In this embodiment of the heat exchange assembly, the structure is simple, the cost of the equipment is reduced, the sound absorption cavity is increased, and the noise reduction effect is improved by arranging the surrounding plate as a wall of the shell.

[0011] In some embodiments of the present application, the surrounding plate comprises a first plate body, a second plate body, a third plate body and a fourth plate body connected in sequence from the head to the tail, the first plate body, the second plate body, the third plate body and the fourth plate body are all sealingly connected with the first wall, the first plate body and the third plate body are oppositely and spacedly arranged, the second plate body and the fourth plate body are oppositely and spacedly arranged, the first heat exchanger extends from the first plate body to the third plate body along the arrangement direction of the first plate body to the third plate body, and / or the first heat exchanger extends from the second plate body to the fourth plate body along the arrangement direction of the second plate body to the fourth plate body. The first heat exchanger can substantially stop the sound absorption cavity in all areas in this direction, thereby improving the noise reduction effect.

[0012] In some embodiments of the present application, the first wall and / or the surrounding plate is arranged as a porous sound absorption structure. By arranging the porous sound absorption structure on the first wall and / or the surrounding plate, the noise of the heat exchange assembly can be further reduced.

[0013] In some embodiments of the present application, the inner wall surface of the first wall is provided with the porous sound absorption structure, and / or the plate surface of the surrounding plate facing the sound absorption cavity is provided with the porous sound absorption structure. In this embodiment of the heat exchange assembly, when the noise reaches the sound absorption cavity, the porous sound absorption structure scatters and absorbs the noise, reduces the reflection, converts the sound energy into heat energy, and is further reflected when the sound propagates to the cavity wall (the cavity wall includes the solid part of the first heat exchanger, the first wall and the surrounding plate) of the sound absorption cavity, and is again absorbed by the porous sound absorption structure, thereby having a good noise reduction effect.

[0014] In some embodiments of the present application, the porous sound absorption structure comprises sound absorption cotton, and the grammage of the sound absorption cotton is in the range of 200 to 600.

[0015] In some embodiments of the present application, the porous sound-absorbing structure is attached to the first wall and / or the baffle. The porous sound-absorbing structure can be attached to part of the first wall, or can cover the entire surface of the first wall. The porous sound-absorbing structure attached to the first wall or the baffle occupies less space and can be arranged in a larger area, thereby improving the noise reduction effect.

[0016] In some embodiments of the present application, the porous sound-absorbing structure is bonded to the first wall and / or the baffle; and / or, the porous sound-absorbing structure is connected to the first wall and / or the baffle by fasteners.

[0017] In some embodiments of the present application, the baffle is provided as a closed plate body, and / or the part of the first wall surrounding the first air vent is provided as a closed plate body. The baffle or the first wall provided as a closed plate body can improve the airtightness of the sound-absorbing cavity, improve the sound stopping and reflecting effect of the cavity wall, and thereby improve the noise reduction capacity of the sound-absorbing cavity.

[0018] In some embodiments of the present application, a second air vent is provided on the shell, one of the first air vent and the second air vent is an air inlet of the shell, and the other is an air outlet of the shell, and the second air vent is provided as a mesh structure. The mesh of the mesh structure can allow air flow to flow into the shell, while the mesh structure can also reduce the possibility of large debris entering the shell and the possibility of the operator reaching into the shell and causing danger.

[0019] In some embodiments of the present application, the air flow guiding mechanism includes a wind ring and an impeller assembly, the wind ring is installed on the first wall; the impeller assembly includes an impeller and a blade, the impeller is provided in a cylindrical shape, the impeller is arranged on the outer side of the blade and is fixedly connected with the blade, the two ends of the wind ring in the axial direction are respectively a wind ring air inlet end and a wind ring air outlet end, the two ends of the impeller in the axial direction are respectively an impeller air inlet end and an impeller air outlet end, along the axial direction of the impeller, the wind ring air outlet end is arranged inside the impeller air inlet end, and along the radial direction of the impeller, the wind ring and the impeller are gap-fitted, and the impeller assembly is configured to be rotatable relative to the wind ring. The wind ring air outlet end is inserted into the impeller air inlet end, so that the stepped surface formed by the gap-fitting of the wind ring and the impeller can avoid the flow path of the air flow, thereby improving the smoothness of the air flow and reducing the possibility of turbulence and noise caused by the stepped surface stopping the air flow from the wind ring to the impeller.

[0020] In some embodiments of the present application, part of the air guide ring protrudes from the inner wall of the first wall to form a convex portion, and the porous sound-absorbing structure surrounds the periphery of the convex portion, and the side of the porous sound-absorbing structure away from the inner wall is flush with the end surface of the convex portion. The flush arrangement of the convex portion and the porous sound-absorbing structure surrounding the convex portion can improve the smoothness of the airflow, reduce the air resistance, and reduce the noise.

[0021] In some embodiments of the present application, the impeller is provided with a blocking portion protruding from the outer peripheral wall of the impeller. The blocking portion can stop the airflow flowing in the opposite direction of the impeller, reduce the possibility of the airflow flowing out of the air outlet of the impeller re-entering the impeller through the gap between the air guide ring and the impeller, causing the airflow in the impeller to separate and become turbulent, and further reduce the noise of the airflow. The overall operation noise of the airflow guiding mechanism and the heat exchange equipment using the airflow guiding mechanism is reduced.

[0022] In some embodiments of the present application, the heat exchange assembly further comprises a soundproof cover arranged outside the first wall, the soundproof cover is arranged to connect the first wall and surround the first air vent and the airflow guiding mechanism. The soundproof cover can further reduce the noise of the heat exchange assembly.

[0023] The second aspect of the present application provides a heat exchange equipment, comprising a compressor, a throttling assembly, a second heat exchanger and a refrigerant pipeline, the heat exchange equipment further comprises the heat exchange assembly of the present application or any embodiment of the present application, the compressor, the first heat exchanger, the throttling assembly and the second heat exchanger are connected in sequence through the refrigerant pipeline.

[0024] The heat exchange equipment of the present embodiment has the same beneficial effects as the heat exchange assembly of the present application or any embodiment of the present application.

[0025] The third aspect of the present application provides an energy storage device, comprising a battery and a thermal management system for adjusting the temperature of the battery; wherein the thermal management system comprises a first heat exchange circuit and a second heat exchange circuit, the first heat exchange circuit comprises a heat exchange assembly or a heat exchange equipment, the heat exchange equipment is the heat exchange equipment of the present application or any embodiment of the present application, the heat exchange assembly is the heat exchange assembly of the present application or any embodiment of the present application, the first heat exchange circuit is used for heat exchange with the second heat exchange circuit, and the second heat exchange circuit is used for heat exchange with the battery.

[0026] The energy storage device of the present embodiment has the same beneficial effects as the heat exchange assembly of the present application or any embodiment of the present application.

[0027] In addition, the energy storage device according to this application may also have the following additional technical features:

[0028] In some embodiments of this application, the energy storage device further includes a cabinet for housing the battery, and the heat exchange assembly is disposed inside or outside the cabinet.

[0029] A fourth aspect of this application provides a charging system including a charging pile. The charging system also includes an energy storage device as described in this application or any embodiment thereof. The charging pile is electrically connected to the battery of the energy storage device, and the energy storage device is used to provide electrical energy to the charging pile.

[0030] The charging system of this application has the same beneficial effects as the heat exchange equipment proposed in this application or any embodiment of this application.

[0031] 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

[0032] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. 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:

[0033] Figure 1 is a schematic diagram of an energy storage device proposed in some embodiments of this application;

[0034] Figure 2 is a partial structural schematic diagram of an energy storage device proposed in some embodiments of this application;

[0035] Figure 3 is a schematic diagram of the thermal management system proposed in some embodiments of this application;

[0036] Figure 4 is a partial structural schematic diagram of a heat exchange component proposed in some embodiments of this application from one perspective;

[0037] Figure 5 is a partial structural schematic diagram of the heat exchange assembly proposed in some embodiments of this application from another perspective;

[0038] Figure 6 is a partial cross-sectional schematic diagram of a heat exchange component proposed in some embodiments of this application;

[0039] Figure 7 is an enlarged view of part D in Figure 5;

[0040] Figure 8 is an enlarged schematic diagram of the mesh structure proposed in some embodiments of this application;

[0041] Fig. 9 is a structural schematic diagram of the air flow guiding mechanism from one perspective according to some embodiments of the present application;

[0042] Fig. 10 is a structural schematic diagram of the air flow guiding mechanism from another perspective according to some embodiments of the present application;

[0043] Fig. 11 is a sectional schematic diagram of the air flow guiding mechanism according to some embodiments of the present application;

[0044] Fig. 12 is an assembly sectional view of the air guiding ring and the impeller assembly according to some embodiments of the present application;

[0045] Fig. 13 is a structural schematic diagram of the impeller assembly from one perspective according to some embodiments of the present application;

[0046] Fig. 14 is a structural schematic diagram of the impeller assembly from another perspective according to some embodiments of the present application;

[0047] Fig. 15 is a sectional schematic diagram of the impeller assembly according to some embodiments of the present application;

[0048] Fig. 16 is a partial sectional schematic diagram of the impeller assembly according to some embodiments of the present application;

[0049] Fig. 17 is a partial sectional schematic diagram of the impeller assembly according to some embodiments of the present application;

[0050] Fig. 18 is a partial structural schematic diagram of the air flow guiding mechanism according to some embodiments of the present application;

[0051] Fig. 19 is a structural schematic diagram of the heat exchange assembly according to some embodiments of the present application.

[0052] The reference signs in the detailed description are as follows: 10, energy storage device; 11, cabinet body; 12, battery; 13, bracket; 14, thermal management system; 15, accommodation space; 100, first heat exchange circuit; 101, heat exchange assembly; 110, shell; 1101, first wall; 1102, second wall; 1103, third wall; 1104, top wall; 1105, bottom wall; 111, sound absorption cavity; 112, first ventilation opening; 113, second ventilation opening; 114, mesh structure; 1141, mesh hole; 115, baffle; 1151, first plate body; 1152, second plate body; 1153, third plate body; 1154, fourth plate body; 120, first heat exchanger; 130, air flow guiding mechanism; 131, impeller assembly; 1311, wheel shaft; 1312, impeller; 1313, blade; 1314, mounting cavity; 1315, transmission part; 1316, impeller air inlet end; 1317, impeller air outlet end; 132, air guide ring; 1321, cover part; 1322, assembly part; 1323, first air guide section; 1324, second air guide section; 1325, air ring air inlet end; 1326, air ring air outlet end; 1327, first sub-section; 1328, second sub-section; 1329, convex part; 133, fixing assembly; 1330, connecting frame; 1331, first connecting part; 1332, second connecting part; 1333, connecting plate; 1334, positioning ring plate; 134, driving piece; 1341, connecting block; 1342, power supply line assembly; 1343, driving output end; 1344, nut assembly; 1345, limiting part; 135, protective mesh cover; 1351, assembly hole; 136, blocking part; 1361, first stop section; 1362, second stop section; 140, sound insulation cover; 1401, sound insulation piece; 1402, surrounding frame; 141, connecting rod; F, air exhaust area; 150, compressor; 160, throttling assembly; 170, porous sound absorption structure; 171, fastener; 180, second heat exchanger; 190, refrigerant pipeline; 200, second heat exchange circuit; 210, heat exchange piece; 220, circulation pipeline; 230, driving assembly; 300, heating assembly; 400, indicator light. DETAILED DESCRIPTION

[0053] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0054] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise required by context, singular terms shall include pluralities and vice versa. Unless otherwise required by context, the use herein of the singular is also to be construed as a use of the plural and vice versa.

[0055] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0056] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification is not necessarily all referring to the same embodiment, or to a particular embodiment, or to a particular set of embodiments. It will be explicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0057] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two), and similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0059] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as limiting the embodiments of the present application, which do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0060] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0061] A battery can store electrical energy and power a power consuming device. With the development of new energy, energy storage devices with batteries are gradually widely used due to their large electrical energy storage capacity. The energy storage device can include a cabinet body, and the battery is arranged in the cabinet body. The number of batteries is usually multiple.

[0062] Temperature has a great influence on the performance of the battery. Too low temperature will reduce the activity of the battery and may cause the battery to be unable to charge and discharge. Too high temperature will have the risk of causing thermal runaway. The energy storage device usually has a thermal management system to regulate the temperature of the battery in the energy storage device.

[0063] In some energy storage devices, the thermal management system regulates the temperature of the battery through a refrigerant heat exchange device, for example, a water chiller can be used to cool the battery in cooperation with a corresponding device. The refrigerant heat exchange device generally includes a compressor, a condenser, a throttling component and an evaporator connected through a refrigerant pipeline. Taking the cooling of the battery as an example, the evaporator is used for heat exchange with the battery to reduce the temperature of the battery, for example, the evaporator can be directly in contact with the battery for heat exchange, and for another example, the evaporator can exchange heat with the environment where the battery is located, or the evaporator can exchange heat with the cooling water system connected to the battery to cool the battery through the cooling water system; the condenser is used for heat exchange with air. In order to improve the refrigeration effect, the condenser is usually provided with an air flow guiding mechanism such as a fan, which can accelerate the flow of air flow to improve the heat exchange efficiency between the condenser and the air flow (formed by air). Among them, the air flow guiding mechanism guides the flow of air flow, not only needs to absorb the heat generated at the end of the battery, and dissipate the heat to the outside, but also needs to dissipate the heat generated by the refrigerant heat exchange device itself (such as the work of the compressor), so the air volume demand of the air flow guiding mechanism is large, the operating power of the air flow guiding mechanism is large, and the noise of the operation of the air flow guiding mechanism is also large.

[0064] How to reduce the noise of the refrigerant heat exchange equipment and make the energy storage device have a better operating environment has always been the focus of the research and development of the energy storage device. Research has found that the operating noise of the refrigerant heat exchange equipment will be higher than the noise of the airflow guiding mechanism itself. Further research has found that this is due to the generation of other noises in the equipment during operation. Among them, the high-speed airflow passing through the condenser will generate a larger noise, and the noise generated by the airflow passing through the condenser and the noise of the airflow guiding mechanism are superimposed, making it difficult to effectively control the equipment noise.

[0065] Based on this, in order to improve the noise generated by the airflow passing through the condenser and achieve the effect of reducing the overall noise, the application provides a heat exchange assembly. The heat exchange assembly is provided with a sound absorption cavity between the position of the fan and the first heat exchanger (the first heat exchanger can be a condenser) used for heat exchange with the airflow. The noise generated by the airflow passing through the first heat exchanger and the noise generated by the operation of the airflow guiding mechanism can be noise-reduced in the sound absorption cavity. Specifically, the noise can at least be energy attenuated under the stopping and reflecting action of the cavity wall surrounding the sound absorption cavity, thereby reducing the noise of the heat exchange assembly propagating outward and improving the control ability of the noise.

[0066] The heat exchange assembly of the application can be applied to a cold water machine, and the first heat exchanger can be a condenser of the cold water machine. The cold water machine applying the heat exchange assembly of the application can reduce the noise propagating outward, thereby improving the overall noise problem of the cold water machine.

[0067] The heat exchange assembly or the heat exchange equipment proposed by the application or any embodiment of the application can be applied to an energy storage device to regulate the temperature of the battery in the energy storage device. For example, the heat exchange equipment can form a battery thermal management system in combination with a cooling medium circulating device, etc., and exchange heat with the battery through the cooling medium circulating device, etc. For another example, the heat exchange equipment can be used independently and directly exchange heat with the battery in the energy storage device or directly exchange heat with the air in the cabinet of the energy storage device to reduce the temperature in the cabinet. The heat exchange equipment proposed by the application or any embodiment of the application can also be used in an electric device to regulate the temperature of the battery of the electric device. The electric device can be but is not limited to an electric vehicle, an electric train, an electric bicycle, a golf cart, a drone, a ship, etc. The heat exchange equipment proposed by the application or any embodiment of the application can also be applied to a non-battery product or a non-battery related environment that needs to be temperature-regulated to regulate the temperature of the non-battery product or the non-battery related environment.

[0068] For ease of description, the embodiments of the application take the heat exchange equipment applied to an energy storage device as an example for description.

[0069] FIG. 1 is a schematic diagram of an energy storage device according to some embodiments of the present application, and FIG. 2 is a schematic diagram of a partial structure of an energy storage device according to some embodiments of the present application. As shown in FIGS. 1 and 2, the energy storage device 10 according to the present embodiment includes a cabinet 11, a battery 12, and a thermal management system 14. The cabinet 11 is provided with a bracket 13 inside. The battery 12 is arranged on the bracket 13.

[0070] The cabinet 11 can have any shape as required. The cabinet 11 can be provided with an opening along one side in the horizontal direction to facilitate assembly and maintenance of the battery 12. The opening can be provided with a door that can be opened and closed, or can be provided without a door. As shown in FIG. 2, the bracket 13 is connected to the cabinet 11, and can be an integral structure with the cabinet 11 or be fixedly connected to the cabinet 11 by bolts or the like. The battery 12 in the cabinet 11 can be multiple. The cabinet 11 can be provided with multiple rows of batteries 12 in the horizontal direction, or can be provided with one row of batteries 12. Each row of batteries 12 can be stacked on the bracket 13 from top to bottom in the cabinet 11.

[0071] The battery 12 can include a box body and a battery cell accommodated in the box body. The battery 12 can be supported on the bracket 13. In each battery 12, the battery cell can be multiple. The multiple battery cells can be connected in series, connected in parallel, or connected in a mixed manner. The mixed manner means that the multiple battery cells are connected in series and in parallel. The multiple battery cells can be directly connected in series, connected in parallel, or connected in a mixed manner, and then the whole of the multiple battery cells is accommodated in the box body. Alternatively, the battery 12 can be in the form of a battery module in which multiple battery cells are connected in series, connected in parallel, or connected in a mixed manner, and then multiple battery modules are connected in series, connected in parallel, or connected in a mixed manner to form a whole, and the whole is accommodated in the box body. The battery 12 can further include other structures. For example, the battery 12 can further include a busbar component for electrically connecting the multiple battery cells. Each battery cell can be a secondary battery or a primary battery. Each battery cell can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. Each battery cell can have a cylindrical shape, a flat shape, a cuboid shape, or other shapes.

[0072] The thermal management system 14 can be used to regulate the temperature of the battery 12. Specifically, the thermal management system 14 can only regulate the temperature of the battery 12 to be increased. The thermal management system 14 can only regulate the temperature of the battery 12 to be decreased. The thermal management system 14 can have both the function of regulating the temperature of the battery 12 to be increased and the function of regulating the temperature of the battery 12 to be decreased. The thermal management system 14 can be adaptively controlled according to the current temperature of the battery 12.

[0073] FIG. 3 is a schematic diagram of a thermal management system according to some embodiments of the present application. As shown in FIG. 3, the thermal management system 14 can include a first heat exchange circuit 100 and a second heat exchange circuit 200. The second heat exchange circuit 200 is used to exchange heat with the battery 12. The first heat exchange circuit 100 is used to exchange heat with the second heat exchange circuit 200.

[0074] The first heat exchange circuit 100 comprises a heat exchange device, which can comprise a compressor 150, a first heat exchanger 120, a throttling assembly 160 and a second heat exchanger 180 connected in series through a refrigerant pipeline 190. The second heat exchange circuit 200 can cool a medium circulating device.

[0075] The cabinet 11 is provided with a receiving space 15 on one side of the bracket 13, and the heat exchange device can be installed in the receiving space 15. Alternatively, the heat exchange device can also be installed outside the cabinet 11 of the energy storage device 10. As shown in FIG. 4 and FIG. 5, FIG. 4 is a partial structural schematic diagram of the heat exchange assembly from one perspective according to some embodiments of the present application, and FIG. 5 is a partial structural schematic diagram of the heat exchange assembly from another perspective according to some embodiments of the present application. The heat exchange device can further comprise a housing 110. The compressor 150, the first heat exchanger 120, the throttling assembly 160, the second heat exchanger 180 and the airflow guiding mechanism 130 can all be arranged in the housing 110, or some components of the heat exchange device can be arranged in the housing 110, and some components can be arranged outside the housing 110. Alternatively, when the heat exchange device is installed outside the cabinet 11, the components related to heat exchange with the external environment, such as the first heat exchanger 120 and the airflow guiding mechanism 130, can be arranged in the housing 110; the compressor 150 can be arranged in the housing 110 outside the cabinet 11; or all components of the heat exchange device can be arranged in the housing 110 outside the cabinet 11.

[0076] The housing 110 is provided with an air inlet and an air outlet. The air inlet is used for air to flow into the housing 110, and the air outlet is used for air to flow out of the housing 110. The housing 110 is arranged in the receiving space 15, and the cabinet 11 is provided with a communication port which communicates with the receiving space 15, so that the air outlet and the air inlet of the housing 110 communicate with the outside of the cabinet 11 through the communication port. A mesh structure can be arranged at the communication port.

[0077] The first heat exchanger 120 can be used for heat exchange with air, i.e., heat exchange with the external environment. The second heat exchanger 180 is used for heat exchange with the cooling medium in the second heat exchange circuit 200. One of the first heat exchanger 120 and the second heat exchanger 180 acts as a condenser, and the other acts as an evaporator. Specifically, in the case of needing to heat the battery 12 to increase the temperature of the battery 12, the first heat exchanger 120 is used as an evaporator, and the second heat exchanger 180 is used as a condenser; in the case of needing to cool the battery 12 to reduce the temperature of the battery 12, the first heat exchanger 120 is used as a condenser, and the second heat exchanger 180 is used as an evaporator. The heat exchange device can further comprise a corresponding valve control assembly, so that the first heat exchanger 120 and the second heat exchanger 180 can be switched under different working conditions.

[0078] The compressor 150 is a driven fluid machine that lifts low-pressure gas to high-pressure gas, which sucks in low-temperature and low-pressure refrigerant from its own refrigerant inlet, and after being compressed by the motor operation to drive the piston, discharges high-temperature and high-pressure refrigerant to its own refrigerant outlet, and provides power for the refrigerant circulation. The refrigerant, also known as refrigerant, snow species, etc., is a medium substance used to complete energy conversion in various heat engines.

[0079] The first heat exchanger 120 is provided with a refrigerant passage for the refrigerant to flow through. When the refrigerant flows through the first heat exchanger 120, it can exchange heat with the air outside the first heat exchanger 120. As shown in FIG. 3, in order to improve the heat exchange efficiency of the first heat exchanger 120 and the air, the heat exchange device can also be provided with an air flow guiding mechanism 130, which can be used to guide the air flow to flow through the first heat exchanger 120. The air flow guiding mechanism 130 can be a fan, specifically an axial flow fan, a mixed flow fan, etc. Among them, the mixed flow fan is also called a mixed flow fan, which is a fan between the axial flow fan and the centrifugal fan. The impeller of the mixed flow fan makes the air do both centrifugal and axial motion, and the motion of the air is a mixture of axial and centrifugal motion.

[0080] The second heat exchanger 180 is provided with a refrigerant passage for the refrigerant to flow through. When the refrigerant flows through the second heat exchanger 180, it can exchange heat with the cooling medium in the second heat exchanger 180. The position of the second heat exchanger 180 can correspond to the first medium containing part, and the first medium containing part is in communication with the second heat exchange circuit 200. The refrigerant in the second heat exchanger 180 exchanges heat with the cooling medium in the first medium containing part. Optionally, in some implementations, the second heat exchanger 180 is provided with a medium passage, which can be used as the first medium containing part. The inlet and outlet of the medium passage are in communication with the outlet and inlet of the second heat exchange circuit 200 respectively to form a circulation loop of the cooling medium. The medium passage and the refrigerant passage are independent of each other, and the cooling medium in the medium passage exchanges heat with the refrigerant to realize the heat exchange between the second heat exchanger 180 and the cooling medium. Optionally, in another implementation, the first medium containing part can be a liquid storage tank, a liquid storage tank, a communication pipe, etc. The second heat exchanger 180 can be arranged in the first medium containing part, and the refrigerant in the second heat exchanger 180 exchanges heat with the cooling medium in the first medium containing part. The first heat exchanger 120 and the second heat exchanger 180 can be plate heat exchangers, fin heat exchangers, etc.

[0081] The second heat exchange circuit 200 comprises a circulating pipeline 220 and a heat exchange member 210. The heat exchange member 210 is a member capable of conducting heat, and can be a water cooling plate. A cooling medium exchanges heat with the battery 12 through the heat exchange member 210. The heat exchange member 210 can be arranged outside the battery 12 and can be arranged in close contact with the battery 12 to facilitate heat exchange between the battery 12 and the heat exchange member 210. The heat exchange member 210 can also be arranged inside the battery 12, for example, between adjacent battery cells in the battery 12. The heat exchange member 210 can also be part of the case of the battery 12, i.e., part of the case as the heat exchange member 210.

[0082] The heat exchange member 210 is provided with a medium passage, and the inlet and outlet of the medium passage of the heat exchange member 210 are respectively connected with the circulating pipeline 220. The circulating pipeline 220 can be provided with a driving assembly 230 for driving the cooling medium to flow from the first medium containing member corresponding to the second heat exchanger 180 to the heat exchange member 210, and then back to the first medium containing member corresponding to the second heat exchanger 180 via the heat exchange member 210. The cooling medium can be a liquid such as water, or a gaseous or other flowable substance.

[0083] The throttling assembly 160 is used to throttle the refrigerant to change the pressure, which can function to throttle and reduce pressure and adjust flow. The throttling assembly 160 can be an expansion valve.

[0084] Referring to FIG. 3, in some embodiments, the first heat exchanger 120 of the heat exchange device is used as a condenser, and the second heat exchanger 180 is used as an evaporator, i.e., the refrigerant pipeline 190 is sequentially connected in series with the compressor 150, the first heat exchanger 120, the throttling assembly 160, and the second heat exchanger 180 to form a refrigerant circuit (the present embodiment is mainly described by taking the refrigerant circuit as a cooling circuit as an example), which can be used for refrigeration, e.g., as part of a water chiller. The general working principle of the heat exchange device for refrigeration is as follows: the second heat exchanger 180 of the refrigerant circuit exchanges heat with the cooling medium of the second heat exchange circuit 200, the cooling medium of the second heat exchange circuit 200 passes through the heat exchange member 210 outside the battery to absorb the heat generated by the battery 12, the temperature of the cooling medium rises, enters the second heat exchanger 180, and the refrigerant evaporates to absorb the heat of the cooling medium, the evaporated refrigerant is driven back to the compressor 150 in the refrigerant circuit for compression to form a high-temperature and high-pressure state, then passes through the condenser (the first heat exchanger 120) for condensation and heat dissipation to form a medium-temperature and high-pressure state, the condenser (the first heat exchanger 120) dissipates the generated heat to the environment through the fan (air flow guiding mechanism 130), and the medium-temperature and high-pressure state refrigerant passes through the expansion valve (throttling assembly 160) to form a low-temperature and low-pressure two-phase state refrigerant, which returns to the second heat exchanger 180 to form a cycle.

[0085] Continuing to refer to FIG. 3, the heat exchange device can further be provided with a heating assembly 300, which can heat the cooling medium, the circulation pipeline 220 being in communication with the heating assembly 300, and the heating assembly 300 can be started when heating of the battery 12 is required. The heating assembly 300 can include an electric heating element and a second medium containing element, which can be a pipe, a tank, a box, etc., and can be connected in the circulation pipeline 220, and the electric heating element is arranged in the second medium containing element and used to heat the cooling medium of the second medium containing element. The electric heating element can be a PTC heating body, which is also called a PTC heater, and the full name is Positive Temperature Coefficient Heater. It is an electric heater using a positive temperature coefficient (PTC) material, which can be composed of a PTC ceramic heating element and an aluminum pipe. This type of PTC heating body has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant temperature, power-saving electric heater.

[0086] It should be noted that the scheme of providing the heating assembly 300 in the heat exchange device can be used in combination with the scheme of the refrigerant circuit of the heat exchange device for refrigeration. The second medium containing part of the heating assembly 300 is provided in parallel with the first medium containing part of the second heat exchanger 180 in the circulation pipeline 220. In some implementations, when the heat exchange device is in use, the second medium containing part of the heating assembly 300 and the second heat exchanger 180 can be selectively communicated with the circulation pipeline 220, which can be achieved by providing a valve control assembly (such as an on-off proportional valve, an electromagnetic valve, etc.) on the circulation pipeline 220, that is, when the battery 12 needs to be warmed up, the refrigerant circuit formed by the compressor 150, the first heat exchanger 120, the throttling assembly 160, and the second heat exchanger 180 is started, the circulation pipeline 220 is communicated with the first medium containing part of the second heat exchanger 180, the heating assembly 300 is closed, and the circulation pipeline 220 is cut off from the first medium containing part of the heating assembly 300, and the second heat exchange circuit 200 delivers the cooling medium heat-exchanged by the second heat exchanger 180 to the heat exchange part 210 corresponding to the battery 12 to cool the battery 12, and the cooling medium is delivered back to the second heat exchanger 180 after passing through the heat exchange part 210; when the battery 12 needs to be cooled, the refrigerant circuit formed by the compressor 150, the first heat exchanger 120, the throttling assembly 160, and the second heat exchanger 180 is stopped, the circulation pipeline 220 is cut off from the first medium containing part of the second heat exchanger 180, the heating assembly 300 is opened, and the circulation pipeline 220 is communicated with the second medium containing part of the heating assembly 300, and the second heat exchange circuit 200 delivers the cooling medium heated by the heating assembly 300 to the heat exchange part 210 corresponding to the battery 12 to heat the battery 12, and the cooling medium is delivered back to the heating assembly 300 after passing through the heat exchange part 210. In other implementations, when the heat exchange device is in use, the second medium containing part of the heating assembly 300 and the second heat exchanger 180 can also be both communicated with the circulation pipeline 220, in which case, when the battery 12 needs to be warmed up, the refrigerant circuit formed by the compressor 150, the first heat exchanger 120, the throttling assembly 160, and the second heat exchanger 180 is started, the heating assembly 300 is closed, and when the battery 12 needs to be cooled, the refrigerant circuit formed by the compressor 150, the first heat exchanger 120, the throttling assembly 160, and the second heat exchanger 180 is stopped, and the heating assembly 300 is opened.

[0087] It should be further noted that the heat management system 14 of the present embodiment can also include temperature sensors and the like, for example, a temperature sensor can be arranged on the battery 12 to detect the temperature of the battery 12; a temperature sensor can be arranged in the cabinet 11 in which the battery 12 is located to detect the temperature in the cabinet 11 in which the battery 12 is located; a temperature sensor can be arranged outside the cabinet 11 to detect the temperature of the external environment. The second heat exchange circuit can be provided with a temperature sensor and a pressure sensor to detect the temperature and flow pressure of the refrigerant, and the second heat exchange circuit can also be provided with a temperature sensor and a pressure sensor to detect the temperature and flow pressure of the cooling medium. The energy storage device 10 can adaptively control the heat exchange equipment based on the detected temperature of the temperature sensors and the like to adjust the temperature of the battery 12. Specifically, the operation control of the heat exchange equipment can be performed by the controller of the energy storage device 10, or a separate controller can be arranged in the heat management system 14, and the separate controller can control the operation of the heat exchange equipment.

[0088] Referring to FIGS. 4 and 5, and in combination with FIG. 6, which is a partial cross-sectional schematic diagram of a heat exchange assembly according to some embodiments of the present application, the present embodiment proposes a heat exchange assembly 101, which includes a housing 110, a first heat exchanger 120, and an airflow guiding mechanism 130. The housing 110 includes a first wall 1101, and the first wall 1101 is provided with a first air vent 112. The first heat exchanger 120 is arranged in the housing 110 and is spaced apart from the first wall 1101, and the first heat exchanger 120 is used for heat exchange with external airflow. The airflow guiding mechanism 130 is arranged at the first air vent 112, and the airflow guiding mechanism 130 is used for guiding airflow to flow through the first heat exchanger 120. The housing 110 is provided with a sound absorption cavity 111, and the housing 110 further includes a surrounding plate 115, which is arranged around the first heat exchanger 120 and the airflow guiding mechanism 130. The first wall 1101, the surrounding plate 115, and the first heat exchanger 120 surround to form the sound absorption cavity 111.

[0089] The shell 110 is an internally hollow member, which can be shaped as needed, and can be a cuboid structure. The first air vent 112 is connected to the outside and the inside of the shell 110. The outside refers to the outside of the shell 110. The first air vent 112 can be an air inlet of the shell 110, or an air outlet of the shell 110. The shell 110 is also provided with a second air vent 113, which is connected to the outside and the inside of the shell 110. In some embodiments, the airflow guide mechanism 130 can be configured to blow air, i.e., to guide the airflow to flow through the first heat exchanger 120 from the first air vent 112 and then be discharged through the second air vent 113. At this time, the first air vent 112 is an air inlet of the shell 110, and the second air vent 113 can be an air outlet of the shell 110. In other embodiments, as shown in FIG. 6, the airflow guide mechanism 130 can be configured to suck air, i.e., to guide the airflow to flow through the first heat exchanger 120 from the second air vent 113 and then flow to the outside through the first air vent 112. At this time, the second air vent 113 is an air inlet of the shell 110, and the first air vent 112 is an air outlet of the shell 110. The airflow can be air.

[0090] It should be noted that the other arrows in FIG. 6 represent the flow direction of the airflow.

[0091] The first wall 1101 is a wall of the shell 110 provided with the first air vent 112. The first air vent 112 can be provided on any wall of the shell 110, such as the top wall 1104, the side wall, or the bottom wall 1105, etc. The second air vent 113 and the first air vent 112 can be provided on different walls of the shell 110 to reduce the mutual influence between the air inlet and the air outlet, improve the heat exchange effect of the heat exchange assembly 101. The first air vent 112 can also be provided on the same side wall as the second air vent 113. At this time, the second air vent 113 and the first air vent 112 can be spaced apart to reduce the mutual influence between the air inlet and the air outlet. One or more first air vents 112 can be provided on the shell 110, and one or more second air vents 113 can also be provided on the shell 110.

[0092] In one embodiment, as shown in FIGS. 4 and 5, the shell 110 is provided in a substantially cuboid structure. One of the side walls of the shell 110 is the first wall 1101. The first wall 1101 is provided with the first air vent 112 in the middle and upper part. The side wall adjacent to the first wall 1101 is provided with a plurality of second air vents 113. The lower part of the first wall 1101 is also provided with a second air vent 113. The top wall 1104 of the shell 110 is also provided with a second air vent 113.

[0093] The enclosure 115 can include a partition provided in the housing 110, for example, a partition provided in the wall of the housing 110, which serves as the enclosure 115. The enclosure 115 can also be at least partially provided as the wall of the housing 110, that is, the wall of the housing 110 itself constitutes at least part of the enclosure 115. The enclosure 115 is part of the cavity wall constituting the sound absorption cavity 111, and the enclosure 115 can be provided in one circle around the circumference of the first heat exchanger 120, that is, the enclosure 115 can be an annular plate, and one end of the enclosure 115 along the axial direction thereof is connected to the first wall 1101, and the other end of the enclosure 115 along the axial direction thereof is connected to the first heat exchanger 120.

[0094] The first heat exchanger 120 can be a refrigerant heat exchanger, and a refrigerant channel can be provided in the first heat exchanger 120. The external airflow refers to the airflow formed by the air outside the first heat exchanger 120. The external airflow (i.e., air) can flow through the outer surface of the first heat exchanger 120 and can exchange heat with the refrigerant in the first heat exchanger 120 through the first heat exchanger 120. The first heat exchanger 120 can be a parallel flow heat exchanger, a flat plate heat exchanger, a finned heat exchanger, a micro-channel heat exchanger, etc. The first heat exchanger 120 is provided inside the housing 110 and can be fixedly connected to the housing 110 by a support, a fixing member (e.g., a bolt, etc.), etc. The first heat exchanger 120 is located on the airflow flow path between the first ventilation opening 112 and the second ventilation opening 113, so that the airflow guiding mechanism 130 guiding the flowing airflow can flow through the first heat exchanger 120.

[0095] The airflow guiding mechanism 130 can be a blower, an axial flow fan, a mixed flow fan (diagonal flow fan), etc. The airflow guiding mechanism 130 can be fixedly installed on the first wall 1101. Alternatively, the airflow guiding mechanism 130 can be provided on the inner wall surface of the first wall 1101 and opposite to the first ventilation opening 112, one end of the airflow guiding mechanism 130 is connected to and communicates with the first ventilation opening 112, and the other end of the airflow guiding mechanism 130 communicates with the inside of the housing 110. Alternatively, the airflow guiding mechanism 130 can also be provided on the outer wall surface of the first wall 1101 and opposite to the first ventilation opening 112, one end of the airflow guiding mechanism 130 is connected to and communicates with the first ventilation opening 112, and the other end of the airflow guiding mechanism 130 communicates with the outside. The airflow guiding mechanism 130 can also be at least partially provided in the first ventilation opening 112.

[0096] The sound absorption cavity 111 can be formed by the housing 110 (including the first wall 1101 and the enclosure 115) and the first heat exchanger 120. The sound absorption cavity 111 is provided between the first wall 1101 and the first heat exchanger 120, and the first wall 1101 is partially a part of the cavity wall constituting the sound absorption cavity 111, and the first heat exchanger 120 is also a part of the cavity wall constituting the sound absorption cavity 111, and the first wall 1101 and the first heat exchanger 120 are located on opposite sides of the sound absorption cavity.

[0097] The noise generated during the operation of the heat exchange assembly 101, including the noise generated during the operation of the airflow guiding mechanism 130 and the noise generated during the airflow flowing through the first heat exchanger 120, can be propagated in various directions. In the heat exchange assembly 101 of the embodiment, the sound absorption cavity 111 is arranged between the first heat exchanger 120 and the first wall 1101 on which the airflow guiding mechanism 130 is arranged. When the noise reaches the sound absorption cavity 111, the noise can be subjected to noise reduction processing in the sound absorption cavity 111. Specifically, the noise can be attenuated under the blocking and reflecting actions of the cavity walls (including the surrounding plate 115, the first wall 1101, and the first heat exchanger 120) surrounding the sound absorption cavity 111, thereby reducing the noise propagated outside the heat exchange assembly 101 and improving the control capability of the noise.

[0098] According to some embodiments of the present application, as shown in FIGS. 5 and 6, the surrounding plate 115 surrounds the first heat exchanger 120 on the outer side of the first heat exchanger 120 in the circumferential direction of the first heat exchanger 120, and the surrounding plate 115 is sealingly connected to the first wall 1101.

[0099] The surrounding plate 115 is sealingly connected to the first wall 1101 at one end in the axial direction of the surrounding plate 115, and is connected to the first heat exchanger 120 at the other end in the axial direction of the surrounding plate 115. Specifically, the surrounding plate 115 and the first wall 1101 can be sealingly connected by welding or the like.

[0100] In the heat exchange assembly 101 of the embodiment, the surrounding plate 115 is sealingly connected to the first wall 1101, which can improve the sealing performance of the sound absorption cavity 111 and improve the noise reduction effect of the sound absorption cavity 111. In addition, the surrounding plate 115 is arranged on the outer side of the first heat exchanger 120 in the circumferential direction, so that the entire first heat exchanger 120 can face the sound absorption cavity 111. The sound absorption cavity 111 has a large area, and the noise generated by the airflow flowing through the first heat exchanger 120 can be subjected to noise reduction processing in the sound absorption cavity 111, thereby improving the noise reduction effect.

[0101] According to some embodiments of the present application, as shown in FIGS. 4 and 5, the surrounding plate 115 is at least partially arranged as a wall of the shell 110.

[0102] The surrounding plate 115 is at least partially arranged as a wall of the shell 110, which can be understood as follows: In addition to the first wall 1101, other walls of the shell 110 at least partially surround the sound absorption cavity 111 and serve as cavity walls of the sound absorption cavity 111. That is, at least part of the surrounding plate 115 is formed by the walls of the shell 110, and this part of the surrounding plate 115 does not need to be arranged on the walls of the shell 110. The walls of the shell 110 can be understood as the walls of the shell 110 itself, which can be the walls constituting the basic shape of the shell 110. For example, the shell 110 is substantially cuboid, and the walls of the shell 110 can be the top wall 1104, the bottom wall 1105, and the side wall connected between the top wall 1104 and the bottom wall 1105.

[0103] The heat exchange assembly 101 of the embodiment can be simple in structure and can reduce the cost of the equipment by arranging the enclosure 115 at least partially as the wall of the shell 110.

[0104] According to some embodiments of the present application, as shown in FIGS. 4 and 5, the enclosure 115 includes first, second, third and fourth plate bodies 1151, 1152, 1153 and 1154 connected in sequence from head to tail, the first, second, third and fourth plate bodies 1151, 1152, 1153 and 1154 are all in sealed connection with the first wall 1101, the first plate body 1151 is arranged opposite and spaced apart from the third plate body 1153, the second plate body 1152 is arranged opposite and spaced apart from the fourth plate body 1154, the first heat exchanger 120 extends from the first plate body 1151 to the third plate body 1153 along the arrangement direction Y of the first plate body 1151 to the third plate body 1153, and / or the first heat exchanger 120 extends from the second plate body 1152 to the fourth plate body 1154 along the arrangement direction X of the second plate body 1152 to the fourth plate body 1154.

[0105] It should be noted that, for the convenience of understanding other components, only a part of the top end and bottom end of the first heat exchanger 120 is shown in FIG. 5, and actually the first heat exchanger 120 is an integral structure from the top end to the bottom end.

[0106] The first plate body 1151, the second plate body 1152, the third plate body 1153 and the fourth plate body 1154 can be in sealed connection with each other by welding or the like. The first plate body 1151, the second plate body 1152, the third plate body 1153 and the fourth plate body 1154 can all be in sealed connection with the first plate body 1151 by welding or the like. The sealed connection can be understood as that there is substantially no gap between the two connected components. The first plate body 1151 can be an integral plate body or a structure of multiple plate bodies spliced together. The second plate body 1152 can be an integral plate body or a structure of multiple plate bodies spliced together. The third plate body 1153 can be an integral plate body or a structure of multiple plate bodies spliced together. The fourth plate body 1154 can be an integral plate body or a structure of multiple plate bodies spliced together.

[0107] Optionally, the first heat exchanger 120 extends from the first plate body 1151 to the third plate body 1153, and the two ends of the first heat exchanger 120 can be connected with the first plate body 1151 and the third plate body 1153 respectively. Along the arrangement direction Y of the first plate body 1151 to the third plate body 1153, the first heat exchanger 120 can substantially stop all areas of the sound absorption cavity 111 in this direction, which can improve the noise reduction effect.

[0108] Optionally, the first heat exchanger 120 extends from the second plate body 1152 to the fourth plate body 1154, and the two sides of the first heat exchanger 120 can be connected with the second plate body 1152 and the fourth plate body 1154 respectively. In the arrangement direction X from the second plate body 1152 to the fourth plate body 1154, the first heat exchanger 120 can substantially stop all areas of the sound absorption cavity 111 in this direction, which can improve the noise reduction effect.

[0109] It should be noted that the first heat exchanger 120 itself can have a ventilation gap, and the airflow can flow through the ventilation gap of the first heat exchanger 120, and the first plate body 1151, the second plate body 1152, the third plate body 1153 and the third plate body 1153 can be sealingly connected with the edge of the first heat exchanger 120 to reduce the possibility of airflow leakage affecting the heat exchange efficiency.

[0110] As shown in FIGS. 4 and 5, optionally, in one implementation, the shell 110 is substantially a cuboid structure, the first wall 1101 is one of the side walls of the shell 110, the two side walls adjacent to the first wall 1101 of the shell 110 are the second wall 1102 and the third wall 1103 respectively, the first heat exchanger 120 is arranged in the space formed by the top wall 1104, the second wall 1102, the bottom wall 1105 and the third wall 1103, and the first wall 1101, the second wall 1102, the third wall 1103, the top wall 1104, the bottom wall 1105 and the first heat exchanger 120 collectively form the sound absorption cavity 111. Among them, the first plate body 1151 is a part of the top wall 1104, the second plate body 1152 is a part of the second wall 1102, the third plate body 1153 is a part of the bottom wall 1105 of the shell 110, and the fourth plate body 1154 is a part of the third wall 1103.

[0111] According to some embodiments of the present application, optionally, as shown in FIGS. 4 and 5, the first wall 1101 and / or the surrounding plate 115 are provided as a porous sound absorption structure 170.

[0112] That is, the cavity wall surrounding the sound absorption cavity 111 can be provided as a porous sound absorption structure 170. The porous sound absorption structure 170 refers to a structure that can absorb noise and thus reduce noise, for example, sound-absorbing cotton, sound-absorbing plate, etc., and the porous sound absorption structure 170 can also be a resonant sound absorption structure, etc.

[0113] Optionally, the porous sound-absorbing structure is a component with a plurality of holes (generally micro-holes) on the surface and inside, and can reduce noise based on the holes. The porous sound-absorbing structure reduces noise mainly based on three mechanisms of reflection, scattering and absorption of noise. The reflection mechanism refers to that when noise encounters the surface of the porous sound-absorbing structure, part of the energy is reflected back, and a surface with high reflectivity can effectively reduce the penetration of sound. The scattering mechanism refers to that the irregular shape of the surface of the porous sound-absorbing structure can make the propagation direction of noise more diverse, thereby reducing the reflection of noise on the surface of the material. The micro-holes and protrusions on the surface of the porous sound-absorbing component can play a scattering role, increase the contact area of noise and the material, and thereby reduce the reflection and propagation of noise. The absorption mechanism refers to that when noise enters the porous sound-absorbing material through the holes, its energy will gradually dissipate due to internal molecular friction and heat conduction, thereby effectively absorbing the energy of noise. The porous sound-absorbing structure can be a component prepared from a porous sound-absorbing material, and the porous sound-absorbing material can be organic fiber, inorganic fiber, inorganic foam, and foam plastic, etc. The porous sound-absorbing structure can also be a sound-absorbing board, etc. The porous sound-absorbing structure has low cost and good noise reduction effect.

[0114] Optionally, the first wall 1101 can be provided with a porous sound-absorbing structure itself. Optionally, the first wall 1101 can also be provided with a porous sound-absorbing structure on the outer wall surface. Optionally, the inner wall surface of the first wall 1101 can also be provided with a porous sound-absorbing structure 170. The outer wall surface of the first wall 1101 refers to the side of the first wall 1101 away from the sound-absorbing cavity 111, and the inner wall surface of the first wall 1101 refers to the side of the first wall 1101 facing the sound-absorbing cavity 111. The porous sound-absorbing structure 170 can be connected to the first wall 1101 by a support or the like, or can be attached to the first wall 1101.

[0115] Optionally, the surrounding plate 115 can be provided with a porous sound-absorbing structure as a whole. Optionally, the surrounding plate 115 can also be provided with a porous sound-absorbing structure on the plate surface away from the sound-absorbing cavity 111. Optionally, the plate surface of the surrounding plate 115 facing the sound-absorbing cavity 111 can also be provided with a porous sound-absorbing structure 170. The porous sound-absorbing structure 170 can be connected to the surrounding plate 115 by a support or the like, or can be attached to the surrounding plate 115. Among the first plate body 1151, the second plate body 1152, the third plate body 1153 and the fourth plate body 1154, one, two or three of them can be provided with a porous sound-absorbing structure 170, or all the four plate bodies can be provided with a porous sound-absorbing structure 170.

[0116] The heat exchange assembly 101 of the embodiment can further reduce the noise of the heat exchange assembly 101 by providing the porous sound-absorbing structure 170 on the first wall 1101 and / or the surrounding plate 115.

[0117] According to some embodiments of the present application, as shown in FIGS. 4 and 5, the inner wall surface of the first wall 1101 is provided with a porous sound-absorbing structure 170, and / or the plate surface of the surrounding plate 115 facing the sound-absorbing cavity 111 is provided with a porous sound-absorbing structure.

[0118] Optionally, the inner wall surface of the first wall 1101 is at least partially provided with a porous sound-absorbing structure 170.

[0119] Optionally, at least part of the plate surface of the surrounding plate 115 facing the sound-absorbing cavity 111 is provided with a porous sound-absorbing structure.

[0120] The heat exchange assembly 101 of the present embodiment, by providing a porous sound-absorbing structure 170 on the inner wall surface of the first wall 1101 and / or the plate surface of the surrounding plate 115 facing the sound-absorbing cavity 111, when the noise reaches the sound-absorbing cavity 111, the porous sound-absorbing structure 170 will scatter and absorb the noise, reduce reflection, and convert sound energy into heat energy, which will be further reflected when the sound propagates to the cavity wall of the sound-absorbing cavity 111 (the cavity wall includes the solid part of the first heat exchanger 120, the first wall 1101, and the surrounding plate 115), and then back to the porous sound-absorbing structure 170 and be absorbed again, which can have a better noise reduction effect.

[0121] According to some embodiments of the present application, optionally, the porous sound-absorbing structure includes sound-absorbing cotton, and the grammage of the sound-absorbing cotton is in the range of 200 to 600.

[0122] Grammage is the weight of sound-absorbing cotton per square meter, and the unit is "grams per square meter". Sound-absorbing cotton is also called soundproof cotton, which can be a porous piece processed from a fibrous material, and the main material of the sound-absorbing cotton can be artificial inorganic fiber, polyester fiber, etc. The grammage of the sound-absorbing cotton can be 200, 300, 400, 600, etc.

[0123] The present embodiment uses sound-absorbing cotton as the porous sound-absorbing structure 170, which has low cost, convenient arrangement, and good noise reduction effect. The grammage of the sound-absorbing cotton is set in the range of 200 to 600, which has good noise reduction effect, is not easy to cause mutual interference of components, and has reasonable cost control.

[0124] According to some embodiments of the present application, as shown in FIGS. 4 and 5, the porous sound-absorbing structure 170 is attached to the first wall 1101 and / or the surrounding plate 115.

[0125] Attachment can be understood as the porous sound-absorbing structure 170 being laid on the first wall 1101 or the surrounding plate 115 and can be in contact with the first wall 1101 or the surrounding plate 115, that is, the porous sound-absorbing structure 170 is laid along the wall surface of the first wall 1101 or the plate surface of the surrounding plate 115.

[0126] The porous sound-absorbing structure 170 on the first wall 1101 can be attached to the first wall 1101, and the porous sound-absorbing structure 170 can be attached to part of the wall surface of the first wall 1101 or cover the entire wall surface of the first wall 1101.

[0127] The porous sound-absorbing structure 170 on the surrounding plate 115 can be attached to the surrounding plate 115, and the porous sound-absorbing structure 170 can be attached to part of the wall surface of the surrounding plate 115 or cover the entire wall surface of the surrounding plate 115.

[0128] In the heat exchange assembly 101 of the embodiment, the porous sound-absorbing structure 170 is attached to the first wall 1101 or the surrounding plate 115, occupies a smaller space, and can be arranged in a larger area, thereby improving the noise reduction effect.

[0129] According to some embodiments of the present application, the porous sound-absorbing structure 170 is attached to the first wall 1101 and / or the surrounding plate 115; and / or, the porous sound-absorbing structure 170 is connected to the first wall 1101 and / or the surrounding plate 115 through the fastener 171.

[0130] The fastener 171 can be a screw, a stud, or the like. In some implementations, the fastener 171 is a stud, the stud is fixedly connected to the first wall 1101 or the surrounding plate 115, and the stud passes through the porous sound-absorbing structure 170 to fix the porous sound-absorbing structure 170. Alternatively, the stud can also cooperate with a gasket to fix the porous sound-absorbing structure 170. Specifically, the gasket can be arranged on the inner side of the porous sound-absorbing structure 170, the gasket is screwed with the stud, and the gasket cooperates with the first wall 1101 or the surrounding plate 115 to clampingly fix the porous sound-absorbing structure 170.

[0131] Alternatively, the porous sound-absorbing structure 170 of the first wall 1101 can be attached to the first wall 1101 only through the adhesive. Alternatively, the porous sound-absorbing structure 170 of the first wall 1101 can be connected to the first wall 1101 only through the fastener 171. Alternatively, as shown in FIG. 7, which is an enlarged view of portion D of FIG. 5, the porous sound-absorbing structure 170 of the first wall 1101 can be first attached to the first wall 1101, and then the connection between the porous sound-absorbing structure 170 and the first wall 1101 is reinforced by using the fastener 171.

[0132] Alternatively, the porous sound-absorbing structure 170 of the surrounding plate 115 can be attached to the surrounding plate 115 only through the adhesive. Alternatively, the porous sound-absorbing structure 170 of the surrounding plate 115 can be connected to the surrounding plate 115 only through the fastener 171. Alternatively, the porous sound-absorbing structure 170 of the surrounding plate 115 can be first attached to the surrounding plate 115, and then the connection between the porous sound-absorbing structure 170 and the surrounding plate 115 is reinforced by using the fastener 171.

[0133] According to some embodiments of the present application, as shown in FIG. 4 and FIG. 5, the surrounding plate 115 is optionally provided as a closed plate body, and / or the first wall 1101 is provided as a closed plate body around the position of the first air vent 112.

[0134] The closed plate body refers to a plate body with substantially no through holes, and most or all positions of the plate body are closed. The closed plate body can be understood with reference to a non-hole plate.

[0135] Optionally, the first wall 1101 is provided as a closed plate body around the position of the first air vent 112, that is, the part of the first wall 1101 surrounding the sound absorption cavity 111 can be provided as a closed plate body except for the position of the first air vent 112.

[0136] Optionally, the surrounding plate 115 can be provided as a closed plate body.

[0137] In the heat exchange assembly 101 of the present embodiment, the surrounding plate 115 or the first wall 1101 is provided as a closed plate body, which can improve the airtightness of the sound absorption cavity 111, improve the sound stopping and reflecting effects of the cavity wall of the sound absorption cavity 111, and further improve the noise reduction capability of the sound absorption cavity 111.

[0138] According to some embodiments of the present application, the surrounding plate 115 and / or the first wall 1101 is optionally a metal plate.

[0139] The sound insulation of a plate member follows the mass law, that is, the heavier the mass of the material of the plate member (the greater the surface density or unit volume density), the better the sound insulation effect. The sound insulation volume can theoretically increase by about six decibels for each doubling of the surface density. Therefore, a larger density of the plate member is preferred. Based on the comprehensive consideration of cost and noise reduction effect, a metal plate can be used as the first wall 1101 or the surrounding plate 115 in the present embodiment. The metal plate refers to a plate body made of metal material, which can be a metal composite plate, an alloy plate, etc.

[0140] Optionally, the metal plate can be a steel plate. The steel plate has high hardness, large density, and low cost. Using a steel plate as the first wall 1101 or the surrounding plate 115 can reduce the cost of the heat exchange device and can have good noise reduction effect.

[0141] According to some embodiments of the present application, the shell 110 is provided with a second air vent 113, one of the first air vent 112 and the second air vent 113 is an air inlet of the shell 110, and the other is an air outlet of the shell 110, and the second air vent 113 is provided as a mesh structure 114.

[0142] The second vent 113 can be provided with a mesh structure 114, as shown in FIG. 8, which is an enlarged view of the mesh structure according to some embodiments of the present application. The mesh holes 1141 of the mesh structure 114 can allow air flow into the housing 110, while reducing the possibility of larger debris entering the housing 110 and reducing the possibility of the operator reaching into the housing 110 and causing danger. The mesh holes 1141 of the mesh structure 114 can be hexagonal, diamond-shaped, circular, or the like.

[0143] It should be noted that the black fuzzy areas in FIG. 5 and FIG. 4 are mesh structures 114, which appear black due to the display scale. The specific structure of the mesh structure 114 can be understood with reference to the enlarged view of the mesh structure 114 in FIG. 8. The mesh structure 114 of each black fuzzy area can be the same as the mesh structure 114 shown in FIG. 8. In the case of the housing 110 having a plurality of second vents 113, at least one second vent 113 can be provided with a mesh structure 114.

[0144] According to some embodiments of the present application, the air flow guide mechanism 130 can be provided, as shown in FIG. 5 and FIG. 6, and as shown in FIG. 9 to FIG. 15. FIG. 9 is a structural schematic view of the air flow guide mechanism from one perspective according to some embodiments of the present application. FIG. 10 is a structural schematic view of the air flow guide mechanism from another perspective according to some embodiments of the present application. FIG. 11 is a cross-sectional view of the air flow guide mechanism according to some embodiments of the present application. FIG. 12 is an assembly cross-sectional view of the air guide ring and the impeller assembly according to some embodiments of the present application. FIG. 13 is a structural schematic view of the impeller assembly from one perspective according to some embodiments of the present application. FIG. 14 is a structural schematic view of the impeller assembly from another perspective according to some embodiments of the present application. FIG. 15 is a cross-sectional view of the impeller assembly according to some embodiments of the present application. The air flow guide mechanism 130 includes an air guide ring 132 and an impeller assembly 131. The air guide ring 132 is mounted to the first wall 1101. The impeller assembly 131 includes an impeller 1312 and a blade 1313. The impeller 1312 is cylindrically arranged and surrounds the outside of the blade 1313 and is fixedly connected to the blade 1313. The two ends of the air guide ring 132 in the axial direction are an air ring inlet end 1325 and an air ring outlet end 1326, respectively. The two ends of the impeller 1312 in the axial direction are an impeller inlet end 1316 and an impeller outlet end 1317, respectively. Along the axial direction of the impeller 1312, the air ring outlet end 1326 is arranged inside the impeller inlet end 1316. Along the radial direction of the impeller 1312, the air guide ring 132 and the impeller 1312 are in clearance fit. The impeller assembly 131 is configured to be rotatable relative to the air guide ring 132.

[0145] When the first air vent 112 is an air inlet of the housing 110, the air flow guiding mechanism 130 can be mounted on the inner wall surface of the first wall 1101. When the first air vent 112 is an air outlet of the housing 110, the air flow guiding mechanism 130 can be mounted on the outer wall surface of the first wall 1101. The air guide ring 132 is connected with the first wall 1101 to fix the air flow guiding mechanism 130 to the external fixing member.

[0146] The air guide ring 132 can guide the air flow, and the air guide ring 132 can be connected with the first wall 1101 to fix the air flow guiding mechanism 130 to the external fixing member. The air guide ring 132 is a substantially cylindrical structure, and a channel for the air flow is formed in the air guide ring 132. Specifically, the air guide ring 132 can be a cylindrical structure with a substantially circular or elliptical cross section, or a cylindrical structure with a polygonal or irregular cross section. The air guide ring 132 is provided with through holes at both axial ends, and the two axial ends of the air guide ring 132 are respectively an air guide ring air inlet end 1325 and an air guide ring air outlet end 1326. The air flow can flow from the air guide ring air inlet end 1325 to the air guide ring air outlet end 1326 along the inside of the air guide ring 132.

[0147] The impeller assembly 131 guides the air flow by rotating, and the flow direction of the air flow can be understood with reference to the arrow C. The impeller 1312 is provided in a cylindrical shape, and can be understood as at least partially being a substantially cylindrical structure. For example, the impeller 1312 can be a substantially circular cylindrical structure. Of course, the impeller 1312 can also be processed into other shapes of cylindrical structures as needed. The side wall of the impeller 1312 can be closed to reduce the possibility of air flow leaking from the side wall of the impeller 1312 and easily flowing back to the impeller air inlet end 1316. The impeller 1312 is provided with through holes at both axial ends, and a flow channel for the air flow is formed in the impeller 1312. The two axial ends of the impeller 1312 are respectively an impeller air inlet end 1316 and an impeller air outlet end 1317. The air flow can flow from the air inlet end of the impeller 1312 to the air outlet end 1317 along the inside of the impeller 1312. The blades 1313 can be in a sheet or plate shape, and can be provided in one or more pieces. The blades 1313 can be arranged in the air guide ring 132 and fixedly connected with the inner circumferential wall of the air guide ring 132.

[0148] It can be understood that the flow direction of the air flow in the air guide ring 132 and the impeller assembly 131 can be substantially understood with reference to the axial direction of the air guide ring 132 and the axial direction of the impeller 1312. Optionally, the axial direction of the air guide ring 132 and the axial direction of the impeller 1312 can be substantially coaxial. The radial direction of the air guide ring 132 is substantially perpendicular to the axial direction of the air guide ring 132, that is, substantially perpendicular to the direction of the air flow in the air guide ring 132. The radial direction of the impeller 1312 is substantially perpendicular to the axial direction of the impeller 1312, that is, substantially perpendicular to the direction of the air flow in the impeller 1312.

[0149] As shown in FIG. 11 and FIG. 12, the air ring outlet end 1326 is arranged inside the impeller inlet end 1316, so that the air ring outlet end 1326 is in communication with the impeller inlet end 1316. The air ring outlet end 1326 is arranged inside the impeller inlet end 1316, that is, the impeller inlet end 1316 is sleeved outside the air ring 132, and the connection between the air ring outlet end 1326 and the impeller inlet end 1316 forms a stepped surface. The stepped surface (i.e. the end surface of the air ring outlet end 1326) in the airflow flow path is oriented in the same direction as the airflow flow direction, so that the airflow is less likely to be interfered by the stepped surface when flowing from the air ring outlet end 1326 to the impeller 1312.

[0150] In the radial direction of the air ring 132, the air ring 132 is in clearance fit with the impeller 1312, which is mainly to enable the impeller 1312 to rotate around its own axis. The clearance fit between the air ring 132 and the impeller 1312 is mainly in the radial direction of the air ring outlet end 1326 (also in the radial direction of the impeller inlet end 1316), that is, the sleeve part of the impeller 1312 and the air ring 132 is in clearance fit, so that the impeller 1312 can rotate around its own axis.

[0151] Optionally, the airflow guiding mechanism 130 further comprises a driving member 134 for driving the rotation of the impeller assembly 131. The driving member 134 and the impeller assembly 131 can be connected through the wheel shaft 1311, and the blades 1313 are connected to the wheel shaft 1311. The driving member 134 drives the wheel shaft 1311 to rotate the blades 1313 and the impeller 1312 together. The driving member 134 can be a motor or the like.

[0152] Optionally, the airflow guiding mechanism 130 can further comprise a fixing assembly 133 for connecting the impeller assembly 131 and the air ring 132. The fixing assembly 133 can fix the impeller assembly 131 to the air ring 132 while retaining the freedom of the impeller assembly 131 to rotate around its own axis. Thus, the assembly of the airflow guiding mechanism 130 can be completed by connecting the air ring 132 to the external fixing member.

[0153] In the operation of the airflow guiding mechanism 130 of the present embodiment, the impeller assembly 131 rotates to press the airflow from the air ring 132 towards the outlet of the impeller assembly 131 (i.e. the impeller outlet end 1317). The air ring outlet end 1326 of the air ring 132 is inserted into the impeller inlet end 1316 of the impeller 1312, so that the stepped surface formed by the sleeve connection of the air ring 132 and the impeller 1312 can avoid the airflow flow path, thereby improving the smoothness of the airflow flow and reducing the possibility of turbulence and noise caused by the interference of the stepped surface when the airflow flows from the air ring 132 to the impeller 1312.

[0154] According to some embodiments of the present application, as shown in FIG. 5, the partial air guide ring 132 protrudes from the inner wall surface of the first wall 1101 to form a protruding portion 1329. The periphery of the protruding portion 1329 is surrounded by the porous sound-absorbing structure 170, and the side of the porous sound-absorbing structure 170 facing away from the inner wall surface is arranged flush with the end surface of the protruding portion 1329.

[0155] The protruding portion 1329 is a part of the air guide ring 132, specifically, the part of the air guide ring 132 protruding from the inner side of the first wall 1101. The end surface of the protruding portion 1329, that is, the end surface of the air guide ring 132 extending into the shell 110, is the surface of the air guide ring 132 substantially perpendicular to the axial direction of the air guide ring 132. The airflow can flow into the air guide ring 132 from the protruding portion 1329 or flow out of the air guide ring 132 through the protruding portion 1329.

[0156] In the heat exchange assembly 101 of the present embodiment, the protruding portion 1329 extends into the inner side of the inner wall surface of the first wall 1101, which can guide the airflow. The protruding portion 1329 and the porous sound-absorbing structure 170 surrounding the protruding portion 1329 are arranged flush, which can improve the smoothness of the airflow and reduce the wind resistance and noise.

[0157] According to some embodiments of the present application, as shown in FIGS. 9-15, the impeller 1312 is provided with a blocking portion 136, which is arranged to protrude from the outer peripheral wall of the impeller 1312.

[0158] The outer peripheral wall of the impeller 1312 refers to the wall surface of the peripheral wall of the impeller 1312 facing outward, which, together with the inner peripheral wall of the impeller 1312, forms two opposite side surfaces of the peripheral wall of the impeller 1312. The blocking portion 136 is arranged to protrude from the outer peripheral wall of the impeller 1312. It can be understood that at least part of the blocking portion 136 is arranged more outward relative to the outer peripheral wall (the outer peripheral wall of the impeller 1312) along the radial direction of the impeller 1312. The blocking portion 136 can be arranged in one or multiple along the axial direction of the impeller 1312. Each blocking portion 136 can be arranged in a full circle or only a part of a circle, such as half a circle, 1 / 4 of a circle, etc., along the circumferential direction of the impeller 1312. The blocking portion 136 can be an integral structure with the impeller 1312, or can be an integral structure connected by welding or other means. Of course, the blocking portion 136 can also be fixedly connected to the impeller 1312 in other ways.

[0159] Optionally, in some embodiments, a plurality of blocking portions 136 are arranged along the axial direction of the impeller 1312, and the protruding height of the blocking portion 136 close to the air inlet end 1316 of the impeller is smaller than the protruding height of the blocking portion 136 close to the air inlet end 1316 of the impeller. In this embodiment, the closer to the air inlet end 1316 of the impeller, the higher the protruding height of the blocking portion 136, which can further stop the air flow flowing back from the air outlet end 1317 of the impeller.

[0160] In the heat exchange assembly of this embodiment, the blocking portion 136 can stop the air flow flowing back from the outside of the impeller 1312, reduce the possibility that the air flow flowing out of the air outlet of the impeller 1312 flows back through the gap between the air guide ring 132 and the connection position of the impeller 1312 to re-enter the impeller 1312, thereby causing the air flow in the impeller 1312 to separate and turbulent, further reducing the noise of the air flow, and reducing the overall operating noise of the air flow guiding mechanism 130 and the heat exchange equipment applying the air flow guiding mechanism 130.

[0161] According to some embodiments of the present application, the air inlet end 1316 of the impeller is provided with a blocking portion 136.

[0162] The air inlet end 1316 of the impeller includes the circumferential wall close to the end face of the air inlet end of the impeller 1312 and the end face of the air inlet end. That is, the blocking portion 136 can be arranged on at least the circumferential wall or the end face of the end of the impeller 1312 close to the air guide ring 132. Optionally, the circumferential wall corresponding to the connection position of the impeller 1312 and the air guide ring 132 can be provided with a blocking portion 136. Specifically, the blocking portion 136 can be a structure formed by outwardly folding the end face of the air inlet end 1316.

[0163] In the air flow guiding mechanism 130 of this embodiment, the blocking portion 136 arranged at the air inlet end 1316 of the impeller can directly stop and interfere with the air flow flowing back to the air inlet end 1316 of the impeller, reduce the air flow flowing back to the impeller assembly 131 from the air outlet end 1317 of the impeller through the air inlet end 1316 of the impeller, and reduce the operating noise of the air flow guiding mechanism 130.

[0164] According to some embodiments of the present application, the blocking portion 136 and the impeller 1312 are an integral structure, as shown in FIGS. 11 and 12.

[0165] The blocking portion 136 can be an integral structure formed by pouring or injection molding with the impeller 1312, or can be an integral structure connected by welding. Optionally, the blocking portion 136 can be a structure formed by outwardly protruding the outer circumferential wall of the impeller 1312, or can be a flange structure formed by outwardly folding the end of the impeller 1312.

[0166] The blocking part 136 is arranged in an integrated structure with the impeller 1312, and the blocking part 136 can be seamlessly connected with the outer peripheral wall of the impeller 1312, thereby improving the blocking effect of the blocking part 136 on the airflow.

[0167] According to some embodiments of the present application, as shown in FIGS. 11-15, the blocking part 136 is arranged in a closed loop around the outer peripheral wall of the impeller 1312 along the circumferential direction of the impeller 1312.

[0168] That is, the blocking part 136 is arranged in a ring on the outer peripheral part along the circumferential direction of the impeller 1312. It should be noted that when the blocking part 136 is arranged in multiple along the axial direction of the impeller 1312, one of the blocking parts 136 can be arranged in a ring, and the other blocking parts 136 can be arranged in a ring or arranged locally along the circumferential direction.

[0169] Optionally, the blocking part 136 can be attached to or integrated with the outer peripheral wall of the impeller 1312 at any position along the circumferential direction of the impeller 1312, so that the blocking part 136 is seamlessly connected with the outer peripheral wall of the impeller 1312, thereby reducing the possibility of the airflow flowing back to the air inlet end 1316 of the impeller assembly 131 along the surface of the outer peripheral wall of the impeller 1312.

[0170] According to some embodiments of the present application, as shown in FIGS. 11-15, the blocking part 136 is arranged in a closed loop around the outer peripheral wall of the impeller 1312 along the circumferential direction of the impeller 1312.

[0171] According to some embodiments of the present application, as shown in FIGS. 11-15, the blocking part 136 includes a first blocking segment 1361, one end of the first blocking segment 1361 is connected with the outer peripheral wall (the outer peripheral wall of the impeller 1312), and the first blocking segment 1361 is arranged to protrude radially from the outer peripheral wall (the outer peripheral wall of the impeller 1312) of the impeller 1312, or the first blocking segment 1361 is arranged to gradually approach the air outlet end 1317 from the end connected with the outer peripheral wall (the outer peripheral wall of the impeller 1312) to the end away from the outer peripheral wall (the outer peripheral wall of the impeller 1312).

[0172] Optionally, in one implementation, as shown in FIGS. 11-15, the first blocking segment 1361 is arranged to protrude radially from the outer peripheral wall (the outer peripheral wall of the impeller 1312) of the impeller 1312. That is, the protruding direction of the first blocking segment 1361 is substantially the same as the radial direction of the impeller 1312, the protruding direction of the first blocking segment 1361 is substantially perpendicular to the axial direction of the impeller 1312, and the first blocking segment 1361 is perpendicular to the outer peripheral wall (the outer peripheral wall of the impeller 1312) of the impeller 1312.

[0173] Optionally, in another implementation, the first stop segment 1361 is arranged closer to the impeller air outlet end 1317 at an end thereof distal to the outer circumferential wall (of the impeller 1312) than at an end thereof connected to the outer circumferential wall (of the impeller 1312). Optionally, the first stop segment 1361 can be gradually varied, i.e., the first stop segment 1361 can be arranged to gradually approach the impeller air outlet end 1317 from the end thereof connected to the outer circumferential wall (of the impeller 1312) to the end thereof distal to the outer circumferential wall (of the impeller 1312). Specifically, as shown in FIG. 16, which is a partial cross-sectional schematic view of an impeller assembly according to some embodiments of the present application, in some specific implementations, the first stop segment 1361 can be arranged to be inclined toward the side where the impeller air outlet end 1317 is located from the end thereof connected to the outer circumferential wall (of the impeller 1312) to the end thereof distal to the outer circumferential wall (of the impeller 1312), i.e., the first stop segment 1361 is arranged to be inclined relative to the radial direction of the impeller 1312, and the first stop segment 1361 is inclined toward the impeller air inlet end 1316. In other implementations, the first stop segment 1361 can be arranged to be curved toward the side where the impeller air outlet end 1317 is located from the end thereof connected to the outer circumferential wall (of the impeller 1312) to the end thereof distal to the outer circumferential wall (of the impeller 1312).

[0174] In the airflow guiding mechanism 130 according to the present embodiment, the first stop segment 1361 is arranged substantially perpendicular to the outer circumferential wall (of the impeller 1312) or gradually approaches the impeller air outlet end 1317, the stop angle a between the protruding direction A of the first stop segment 1361 and the flow direction B of the airflow flowing against the impeller air outlet end 1317 is less than or equal to 90 degrees, and the first stop segment 1361 can have a good effect of stopping the airflow flowing against the impeller air outlet end 1317, further reducing the possibility of the airflow discharged from the impeller air outlet end 1317 flowing back to the impeller assembly 131 through the impeller air inlet end 1316, and reducing the operating noise of the airflow guiding mechanism 130.

[0175] According to some embodiments of the present application, optionally, the blocking portion 136 includes a first stop segment 1361, which is arranged to be folded outward in the radial direction of the impeller 1312 from the outer circumferential wall of the impeller 1312.

[0176] As shown in FIGS. 11-16, the first stop segment 1361 can be folded outward in the radial direction from the outer circumferential wall of the impeller air inlet end 1316. Optionally, the first stop segment 1361 can also be folded outward in the radial direction from the outer circumferential wall of the impeller air outlet end 1317.

[0177] The first stop section 1361 is folded by the outer peripheral wall of the impeller 1312, simple structure, and the outer peripheral wall of the impeller 1312 and the first stop section 1361 are integrated, reducing the possibility of reverse flow of air flow from the connection between the outer peripheral wall of the impeller 1312 and the first stop section 1361, further reducing the possibility of air flow from the air outlet end 1317 of the impeller backflowing to the impeller assembly 131 through the air inlet end 1316 of the impeller, and reducing the operating noise of the air flow guide mechanism 130.

[0178] According to some embodiments of the present application, as shown in Figure 17, Figure 17 is a partial cross-sectional view of an impeller assembly according to some embodiments of the present application, the blocking part 136 further comprises a second stop section 1362, along the radial direction of the impeller 1312, one end of the first stop section 1361 away from the outer peripheral wall (the outer peripheral wall of the impeller 1312) is connected to one end of the second stop section 1362, and along the axial direction of the impeller 1312, the second stop section 1362 is located on the side of the first stop section 1361 close to the air outlet end 1317 of the impeller, the second stop section 1362 is arranged at an acute angle, a right angle or an obtuse angle with the first stop section 1361, and the second stop section 1362 is arranged spaced apart from the outer peripheral wall (the outer peripheral wall of the impeller 1312).

[0179] Wherein, along the radial direction of the impeller 1312, the first stop section 1361 can be a straight section, or a curved or folded curved section. Along the radial direction of the impeller 1312, the second stop section 1362 can be a straight section, or a curved or folded curved section. Along the circumferential direction of the impeller 1312, the first stop section 1361 can be connected to the second stop section 1362 at any position, or the first stop section 1361 can be connected to the second stop section 1362 at a local position. The first stop section 1361 and the second stop section 1362 can be integrated. The first stop section 1361 and the second stop section 1362 can be directly connected in a straight line or a curved line, or can be connected in an arc-shaped section or other transition curved connection.

[0180] Along the radial direction of the impeller 1312, one end of the first stop section 1361 away from the outer peripheral wall (the outer peripheral wall of the impeller 1312) is the outer end of the first stop section 1361 along the radial direction of the impeller 1312.

[0181] The first stop section 1361 is located on the side of the first stop section 1361 close to the impeller air outlet end 1317, that is, the side of the first stop section 1361 facing the impeller air outlet end 1317. The second stop section 1362 is spaced apart from the outer peripheral wall (the outer peripheral wall of the impeller 1312), that is, a gap for the airflow to enter is provided between the second stop section 1362 and the outer peripheral wall (the outer peripheral wall of the impeller 1312). Specifically, as shown in FIG. 17, the second stop section 1362 can be spaced apart from the outer peripheral wall (the outer peripheral wall of the impeller 1312) at any position from the end of the second stop section 1362 away from the first stop section 1361 to the end of the second stop section 1362 connected to the first stop section 1361, so that the reverse airflow from the impeller air outlet end 1317 can enter between the second stop section 1362 and the outer peripheral wall (the outer peripheral wall of the impeller 1312).

[0182] In some implementations, the second stop section 1362 is bent at an acute angle with the first stop section 1361, that is, along the axial direction of the impeller 1312, the end of the second stop section 1362 connected to the first stop section 1361 is closer to the outer peripheral wall (the outer peripheral wall of the impeller 1312) than the end of the second stop section 1362 away from the first stop section 1361 (which is the end of the second stop section 1362 close to the impeller air outlet end 1317).

[0183] In some implementations, the second stop section 1362 is bent at an obtuse angle with the first stop section 1361, that is, along the axial direction of the impeller 1312, the end of the second stop section 1362 connected to the first stop section 1361 is farther away from the outer peripheral wall (the outer peripheral wall of the impeller 1312) than the end of the second stop section 1362 away from the first stop section 1361 (which is the end of the second stop section 1362 close to the impeller air outlet end 1317).

[0184] In some implementations, as shown in FIG. 17, the second stop section 1362 is bent at a right angle with the first stop section 1361, that is, the second stop section 1362 is substantially perpendicular to the first stop section 1361.

[0185] The airflow guiding mechanism 130 of the present embodiment has the second stop section 1362 located on the side of the first stop section 1361 close to the impeller air outlet end 1317, and the second stop section 1362 is spaced apart from the outer peripheral wall (the outer peripheral wall of the impeller 1312). The second stop section 1362 can cooperate with the first stop section 1361 to form a stop groove with an opening facing the impeller air outlet end 1317. Under the restriction of the second stop section 1362, the stop effect on the reverse airflow from the impeller air outlet end 1317 can be further improved, the possibility of the airflow discharged from the impeller air outlet end 1317 flowing back to the impeller assembly 131 through the impeller air inlet end 1316 is reduced, and the operating noise of the airflow guiding mechanism 130 is reduced.

[0186] According to some embodiments of the present application, as shown in FIG. 17, the blocking part 136 further comprises a second stop segment 1362, which is formed by folding the axial end of the first stop segment 1361 radially outward of the impeller 1312.

[0187] The second stop segment 1362 is formed by folding the first stop segment 1361, which is simple in structure and convenient to process. Moreover, the connection between the second stop segment 1362 and the first stop segment 1361 is an integral structure, which reduces the possibility of backflow of air flow from the connection between the second stop segment 1362 and the first stop segment 1361, further reduces the possibility of backflow of air flow from the air outlet end 1317 of the impeller to the air inlet end 1316 of the impeller assembly 131, and reduces the operating noise of the air flow guide mechanism 130.

[0188] According to some embodiments of the present application, as shown in FIGS. 11 and 12, the flow passage cross section of the air guide ring 132 is tapered along the direction from the air ring air inlet end 1325 to the air ring air outlet end 1326.

[0189] The direction from the air ring air inlet end 1325 to the air ring air outlet end 1326 is also the flow direction of the air flow. Along the flow direction of the air flow, the air guide ring 132 can be at least partially tapered, so that the flow area of the air flow gradually decreases, thereby improving the air guide effect on the air flow.

[0190] Optionally, in some implementations, the air guide ring 132 comprises a first air guide segment 1323 and a second air guide segment 1324. The flow passage cross section of the first air guide segment 1323 is tapered along the direction from the air ring air inlet end 1325 to the air ring air outlet end 1326. The air outlet end of the first air guide segment 1323 is connected and communicated with the air inlet end of the second air guide segment 1324. The second air guide segment 1324 is a straight cylinder segment, and the second air guide segment 1324 is inserted into the impeller air inlet end 1316.

[0191] The flow passage cross section can be understood as,

[0192] The flow passage cross section can be understood as,

[0193] The direction from the air inlet end 1325 of the air ring to the air outlet end 1326 of the air ring, that is, the flow direction of the airflow in the air ring 132. In the flow direction of the airflow, the flow passage cross section of the first air guide section 1323 is tapered, which can better guide the airflow. The first air guide section 1323 can be a section with the same flow passage cross section change rate, or can include multiple sub-sections with different flow passage cross section change rates. Optionally, in some embodiments, the first air guide section 1323 includes a first sub-section 1327 and a second sub-section 1328, which are sequentially aligned and connected and communicated in the flow direction of the airflow, and the flow passage cross section change rate of the first sub-section 1327 is greater than that of the second sub-section 1328, that is, the first sub-section 1327 is more obviously tapered than the second sub-section 1328, for example, in the axial direction, the first sub-section 1327 and the second sub-section 1328 are both arranged in an arc shape and taper, and the curvature of the first sub-section 1327 is greater than that of the second sub-section 1328. By making the flow passage cross section change rate near the air inlet end greater than that near the air outlet end, the airflow guiding effect can be improved, and the noise can be reduced.

[0194] The air outlet end of the second air guide section 1324 is aligned and connected with the air inlet end of the second air guide section 1324, which can be understood as that the flow passage cross section of the second air guide section 1324 is substantially the same as the flow passage cross section of the air outlet end of the first air guide section 1323 in area and shape, so that the air outlet end of the first air guide section 1323 is aligned and connected with the air inlet end of the second air guide section 1324, and the airflow can flow smoothly at this position.

[0195] The second air guide section 1324 is a straight cylinder section, which can be understood as that the shape and area of the flow cross section of the second air guide section 1324 remain substantially unchanged from the air inlet end to the air outlet end. The second air guide section 1324 is arranged as a straight cylinder section, and the second air guide section 1324 is used for plug-in cooperation with the impeller air inlet end 1316, which can improve the cooperation degree between the second air guide section 1324 and the impeller 1312, reduce the gap between the air ring 132 and the impeller 1312 in the radial direction, reduce the flow of the airflow (the airflow flowing out of the air outlet of the impeller 1312) flowing back through the gap between the air ring 132 and the impeller 1312 and then entering the impeller 1312 again, and reduce the noise. It should be noted that the impeller 1312 can at least arrange the impeller air inlet end 1316 as a straight cylinder section to better cooperate with the second air guide section 1324.

[0196] The structure of the air ring 132 of the airflow guiding mechanism 130 of the embodiment can not only better guide the airflow, but also reduce the flow of the airflow (the airflow flowing out of the air outlet of the impeller 1312) flowing back through the gap between the air ring 132 and the impeller 1312 and then entering the impeller 1312 again, and reduce the noise.

[0197] According to some embodiments of the present application, as shown in FIGS. 11-17, along the axial direction of the impeller 1312, the two ends of the blade 1313 do not exceed the end surface of the corresponding end of the impeller 1312.

[0198] The two ends of the blade 1313 do not exceed the end surface of the corresponding end of the impeller 1312, which can be understood as that the blade 1313 is entirely located within the axial dimension of the impeller 1312, the end surface of the blade 1313 towards the outflow end 1317 of the impeller can be flush with or located inside the outflow end 1317 of the impeller, and the end surface of the blade 1313 towards the inflow end 1316 of the impeller can be flush with or located inside the inflow end 1316 of the impeller. The blade 1313 being entirely located within the axial dimension of the impeller 1312 can improve the cooperation between the blade and the impeller 1312 and improve the guiding ability of the airflow guiding mechanism 130.

[0199] According to some embodiments of the present application, as shown in FIGS. 11-17, along the axial direction of the impeller 1312, the distance between the blade 1313 and the end surface of the outflow end 1317 of the impeller is a first dimension, and the distance between the blade 1313 and the end surface of the inflow end 1316 of the impeller is a second dimension L, the first dimension being smaller than the second dimension L.

[0200] Optionally, along the axial direction of the impeller 1312, the two ends of the blade 1313 do not exceed the end surface of the corresponding end of the impeller 1312, and the first dimension is smaller than the second dimension L. The first dimension is the interval distance between the end surface of the blade 1313 towards the outflow end 1317 of the impeller and the end surface of the outflow end 1317 of the impeller along the axial direction of the impeller 1312. The second dimension L is the interval distance between the end surface of the blade 1313 towards the inflow end 1316 of the impeller and the end surface of the inflow end 1316 of the impeller along the axial direction of the impeller 1312. It should be noted that the first dimension can be zero (i.e., the blade 1313 is flush with the end surface of the outflow end 1317 of the impeller) or a positive number. Since the first dimension is smaller than the second dimension L, the second dimension L is a positive number, and therefore the end surface of the impeller 1312 towards the inflow end 1316 of the impeller is located inside the inflow end 1316 of the impeller. It can be understood that the second dimension L is large, which can provide assembly space for the air guide ring 132, so that the air guide ring 132 can be inserted into the inflow end of the impeller 1312 without interfering with the blade 1313 in the axial direction, and the first dimension is small, which can make the outflow end 1317 of the impeller have a high airflow pressure, which is conducive to promoting the rapid flow of the airflow.

[0201] According to some embodiments of the present application, as shown in FIGS. 9-11, and in combination with FIG. 18, which is a schematic diagram of a partial structure of the airflow guiding mechanism according to some embodiments of the present application, the air guide ring 132 further comprises an assembly portion 1322, the outer wall surface of the air guide ring inlet end 1325 is connected with the assembly portion 1322, the assembly portion 1322 extends outward along the radial direction of the impeller 1312, and the assembly portion 1322 is used to connect with an external fixing member.

[0202] For the convenience of description and understanding, the main body portion of the air guide ring 132 is defined as the cover portion 1321. Specifically, the air guide ring 132 comprises the cover portion 1321 and the assembly portion 1322, the cover portion 1321 has the air guide ring inlet end 1325 and the air guide ring outlet end 1326 at two ends along the axial direction of the air guide ring 132, the outer wall surface of the air guide ring inlet end 1325 of the cover portion 1321 is connected with the assembly portion 1322, the assembly portion 1322 is used to connect with an external fixing member, and the airflow guiding mechanism 130 further comprises a fixing assembly 133, the impeller assembly 131 is installed on the assembly portion 1322 through the fixing assembly 133.

[0203] The assembly portion 1322 is fixedly connected with the cover portion 1321, and the two can be an integral structure. Alternatively, the assembly portion 1322 can be a structure formed by outwardly folding the air guide ring inlet end 1325 of the cover portion 1321. Alternatively, the assembly portion 1322 can be a flange structure, and the assembly portion 1322 can be detachably connected with the external fixing member through bolts or the like.

[0204] The airflow guiding mechanism 130 of the present embodiment can more conveniently fix the air guide ring 132 to the external fixing member by providing the assembly portion 1322.

[0205] According to some embodiments of the present application, optionally, referring to FIGS. 9-11, and in combination with FIG. 18, the airflow guiding mechanism 130 further comprises a fixing assembly 133, and the impeller assembly 131 is mounted to the assembling portion 1322 through the fixing assembly 133. The fixing assembly 133 connects the impeller assembly 131 and the assembling portion 1322, so that the impeller assembly 131 is mounted to the assembling portion. It should be noted that the fixing assembly 133 is relatively fixed with the assembling portion 1322, and the impeller assembly 131 can rotate relative to the fixing assembly 133. For example, the fixing assembly 133 can comprise a connecting frame 1330 and a bearing fixed on the connecting frame 1330, the connecting frame 1330 is fixedly connected with the assembling portion 1322, and the bearing is connected with the wheel shaft 1311 of the impeller assembly 131 through a shaft, so that the impeller assembly 131 can rotate relative to the fixing assembly 133, and can be mounted to the assembling portion 1322 through the fixing assembly 133; for another example, the fixing assembly 133 can be connected with a fixed portion of a driving member 134 (such as a motor) of the impeller assembly 131, and a driving output end 1343 of the driving member 134 is connected with the impeller assembly 131, so that the impeller assembly 131 can rotate relative to the fixing assembly 133, and can be mounted to the assembling portion 1322 through the fixing assembly 133.

[0206] In the airflow guiding mechanism 130 of the present embodiment, the air guide ring 132 is arranged on the assembling portion 1322, and the impeller assembly 131 is mounted to the assembling portion 1322, so that the air guide ring 132 and the impeller assembly 131 are integrated as a whole, and the structure is simple. By connecting the assembling portion 1322 with an external fixing member, the whole airflow guiding mechanism 130 can be fixed to the external fixing member, and the operation is convenient.

[0207] According to some embodiments of the present application, optionally, continuing to refer to FIGS. 11-15, and in combination with FIG. 18, the airflow guiding mechanism 130 further comprises a driving member 134, and the impeller assembly 131 further comprises a wheel shaft 1311, the wheel shaft 1311 is arranged in the impeller 1312, the blades 1313 are connected to the wheel shaft 1311, and the driving member 134 is connected to one end of the wheel shaft 1311 away from the air guide ring 132.

[0208] The blades 1313 and the wheel shaft 1311 can be arranged in the axial direction of the impeller 1312 and spaced apart from the air guide ring 132, so that the impeller assembly 131 can rotate around its own axis, and the possibility of mutual interference between the impeller assembly 131 and the air guide ring 132 is reduced.

[0209] Optionally, the blades 1313 are arranged in a plurality, and the plurality of blades 1313 are connected to the wheel shaft 1311 at intervals in the circumferential direction of the wheel shaft 1311. The blades 1313, the wheel shaft 1311 and the impeller 1312 can be an integrated structure.

[0210] The driving member 134 can include a motor, and an output shaft of the motor is fixedly connected with the wheel shaft 1311 to drive the impeller assembly 131 to rotate around the axis thereof.

[0211] In some embodiments, the impeller assembly 131 can be supported and fixed by the output shaft of the motor, and the driving member 134 is fixedly connected with the assembly portion 1322 through the fixing assembly 133, so that the fixing assembly 133 can support and fix the driving member 134 and the impeller assembly 131. Specifically, the airflow guiding mechanism 130 further includes the driving member 134, the impeller assembly 131 further includes the wheel shaft 1311 arranged in the impeller 1312, the blades 1313 are connected with the wheel shaft 1311, and the blades 1313 and the wheel shaft 1311 are both arranged in the axial direction of the impeller 1312 and are spaced apart from the air guide ring 132. The driving member 134 is connected with one end of the wheel shaft 1311 away from the air guide ring 132, and the fixing assembly 133 is connected with the driving member 134 to mount the impeller assembly 131 and the driving member 134 on the assembly portion 1322.

[0212] Optionally, in some implementations, the fixing assembly 133 includes a connecting frame 1330, one end of the connecting frame 1330 is detachably fixedly connected with the driving member 134 through bolts or the like, and the other end of the connecting frame 1330 is detachably fixedly connected with the assembly portion 1322 through bolts or the like. Through the detachable manner, the disassembly and maintenance of the driving member 134 and the impeller assembly 131 are facilitated.

[0213] The airflow guiding mechanism 130, the driving member 134, the impeller assembly 131 and the air guide ring 132 can be integrated in the embodiment, which facilitates the assembly of the airflow guiding mechanism 130 and the external fixing member, and the impeller assembly 131 and the driving member 134 are connected and fixed with the assembly portion 1322 through the same fixing assembly 133, so that the structure is simple and the disassembly and assembly are facilitated.

[0214] According to some embodiments of the present application, the wheel shaft 1311 is provided with an installation cavity 1314, and the driving member 134 is arranged in the installation cavity 1314, and the driving member 134 is arranged to drive the wheel shaft 1311 to rotate the impeller assembly 131.

[0215] In an optional implementation, the wheel shaft 1311 is provided with an installation cavity 1314, the installation cavity 1314 penetrates through the end face of the wheel shaft 1311 away from the air guide ring 132, the wheel shaft 1311 is further provided with a transmission portion 1315, the transmission portion 1315 is located at one end of the wheel shaft 1311 close to the air guide ring 132, part of the driving member 134 is arranged in the installation cavity 1314 and is in gap cooperation with the hole wall of the installation cavity 1314, and the driving output end 1343 of the driving member 134 is connected with the transmission portion 1315 to drive the wheel shaft 1311 to rotate the impeller assembly 131.

[0216] As shown in FIGS. 11-17, the wheel shaft 1311 is internally hollow to form a mounting cavity 1314, the mounting cavity 1314 is open at an end away from the air guide ring 132, and the mounting cavity 1314 is sealed at an end close to the air guide ring 132. The body of the motor is inserted into the mounting cavity 1314 and is in clearance fit with the mounting cavity 1314, so that the impeller assembly 131 can rotate relative to the body of the motor; the output shaft of the motor is fixedly connected with the transmission part 1315, so that the output shaft of the motor can drive the impeller assembly 131 to rotate.

[0217] The transmission part 1315 and the driving output end 1343 can be connected by a key or fixedly connected by a bolt. Alternatively, in a specific implementation, the transmission part 1315 is provided with a polygonal hole, the driving output end 1343 is provided in a polygonal structure, the driving output end 1343 is inserted into the polygonal hole, so that the driving output end 1343 is fixedly connected with the transmission part 1315 in the circumferential direction; the driving output end 1343 is provided with a limiting part 1345 on the inside of the polygonal hole (the side of the polygonal hole facing the mounting cavity 1314), the driving output end 1343 passes through the polygonal hole, and a nut assembly 1344 is screwed on the outside of the polygonal hole (the side of the polygonal hole away from the mounting cavity 1314), the nut assembly 1344 and the limiting part 1345 fix the driving output end 1343 and the transmission part 1315 in the axial direction, so as to achieve the fixed connection of the driving output end 1343 and the wheel shaft 1311.

[0218] It should be noted that, in the axial direction of the impeller assembly 131, the body of the driving member 134 can be entirely located in the mounting cavity 1314 or partially protrude from the mounting cavity 1314.

[0219] The airflow guiding mechanism 130 of the present embodiment, the driving member 134 is at least partially built-in in the mounting cavity 1314, so that the airflow guiding mechanism 130 has a smaller volume, saving costs, and the driving member 134 is substantially built-in in the mounting cavity 1314, which can reduce the damage of rainwater and the like to the driving member 134 and improve the reliability of the driving member 134.

[0220] According to some embodiments of the present application, the airflow guiding mechanism 130 further comprises a protective mesh cover 135, which is provided on the radial outer side of the impeller assembly 131.

[0221] The protective mesh cover 135 is a cover structure with mesh holes, and the protective mesh cover 135 can be mounted on the assembly part 1322 and covers the end of the impeller assembly 131 away from the air guide ring 132. The driving member 134 can be entirely or partially located in the protective mesh cover 135.

[0222] The protective mesh cover 135 can meet the air outlet requirement of the airflow guiding mechanism 130, reduce the entry of foreign matters into the airflow guiding mechanism 130, improve the reliability of the airflow guiding mechanism 130, and reduce the risk of the operator being injured by the airflow guiding mechanism 130.

[0223] Optionally, in some implementations, the protective mesh cover 135 can be provided with an assembly hole 1351, the driving member 134 partially protrudes from the mounting cavity 1314 and is located in the assembly hole 1351, one end of the fixing assembly 133 is connected with the driving member 134, the other end passes through the protective mesh cover 135 and is connected with the assembly portion 1322, and the protective mesh cover 135 is pressed against the assembly portion 1322 through the fixing assembly 133. Optionally, the fixing assembly 133 can include a connecting frame 1330, the connecting frame 1330 includes a first connecting portion 1331 and a second connecting portion 1332 connected with each other, the first connecting portion 1331 extends substantially along the axial direction of the impeller 1312, one end of the first connecting portion 1331 is connected with the assembly portion 1322, the other end of the second connecting portion 1332 is connected with one end of the second connecting portion 1332, the second connecting portion 1332 extends substantially along the radial direction of the impeller 1312, the other end of the second connecting portion 1332 passes through the protective mesh cover 135 away from the side of the impeller assembly 131, and is fixedly connected with the driving member 134. The connecting frame 1330 can be spaced apart along the circumferential direction of the protective mesh cover 135. The first connecting portion 1331 can be provided with a connecting plate 1333, the connecting plate 1333 is attached to the assembly portion 1322, and the connecting plate 1333 and the assembly portion 1322 can be fixedly connected through bolts or other fasteners. The first connecting portion 1331 and the second connecting portion 1332 can be an integral structure. The body of the driving member 134 can be provided with a protruding connecting block 1341, the second connecting portion 1332 is fixedly connected with the connecting block 1341, and the second connecting portion 1332 and the connecting block 1341 can be detachably connected through bolts or the like. The end of the second connecting portion 1332 away from the first connecting portion 1331 can be provided with a connecting plate, the second connecting portion 1332 is attached to the positioning ring plate 1334 or the connecting block 1341 through the connecting plate, and the second connecting portion 1332 and the positioning ring plate 1334 can be fixedly connected through bolts or other fasteners.

[0224] Optionally, the fixing assembly 133 can further include a positioning ring plate 1334, the positioning ring plate 1334 is arranged in the assembly hole 1351 and is sleeved on the outer side of the driving member 134, and the second connecting portion 1332 is further fixedly connected with the positioning ring plate 1334. The positioning ring plate 1334 is supported and fixed by the connecting frame 1330, and the positioning ring plate 1334 can limit the movement of the protective mesh cover 135 along the radial direction, thereby improving the assembly stability of the protective mesh cover 135. The positioning ring plate 1334 and the second connecting portion 1332 can be detachably connected through bolts or the like.

[0225] Optionally, the driving member 134 can have a small part exposed outside the protective mesh cover 135, which part can be connected to a power line assembly 1342 for supplying power to the driving member 134. By placing the power line assembly 1342 outside, the power line assembly 1342 is less likely to interfere with the protective mesh cover 135, improving the convenience of connecting the power line assembly 1342 to the power supply.

[0226] The embodiment has simple structure and high assembly stability, and when the impeller assembly 131 needs to be maintained, the disassembly of the protective mesh cover 135, the driving member 134 and the impeller assembly 131 can be completed by disassembling the fixing assembly 133, which is convenient to operate.

[0227] According to some embodiments of the present application, as shown in FIGS. 9, 11, 12 and 18, along the axial direction of the air guide ring 132, the cover body part 1321 includes a protruding part 1329 protruding from the assembly part 1322, the protruding part 1329 is used for being inserted into the first air vent of the first wall, and the protruding part 1329 is arranged as the air guide ring air inlet end 1325.

[0228] Along the axial direction of the air guide ring 132, the protruding part 1329 protrudes towards the side of the cover body part 1321 away from the impeller assembly 131. The protruding part 1329 as the air guide ring air inlet end 1325 can be understood as that the protruding part 1329 surrounds the air inlet of the air flow channel of the air guide ring 132, and the inner wall surface of the protruding part 1329 (the inner circumferential surface of the protruding part 1329 facing the air flow channel) is aligned and connected with the inner wall surface of the main body part of the cover body part 1321. Along the flow direction of the air flow, the inner wall surface of the protruding part 1329 can be tapered to improve the guiding effect of the air flow and reduce noise.

[0229] Referring to FIGS. 4 and 5, when the air flow guiding mechanism 130 is assembled with the first wall 1101, the assembly part 1322 can be attached to the first wall, the impeller assembly 131 is located on the side of the assembly part 1322 away from the external fixing member, and the protruding part 1329 can be inserted into the first air vent. The protruding part 1329 can make the air flow more smoothly to the air flow guiding mechanism 130, reduce the pressure loss of the air flow, and improve the guiding efficiency of the air flow guiding mechanism 130.

[0230] As shown in FIGS. 4, 5 and 19, FIG. 19 is a structural schematic diagram of a heat exchange assembly according to some embodiments of the present application, according to some embodiments of the present application, the heat exchange assembly further includes a soundproof cover 140 arranged outside the first wall, the soundproof cover 140 is arranged to connect the first wall 1101 and surround the first air vent 112 and the air flow guiding mechanism 130.

[0231] The sound insulation cover 140 can be arranged outside the first wall 1101, that is, the sound insulation cover 140 is arranged on the side of the first wall 1101 away from the shell 110. The sound insulation cover 140 can be arranged outside the periphery of the airflow guiding mechanism 130 and the first air vent 112, and can be annularly arranged in one circle, which can be substantially rectangular, or substantially circular, elliptical or other shapes. The sound insulation cover 140 can be fixedly connected with the first wall 1101 by welding, bolt connection or the like.

[0232] As shown in FIG. 19, in some embodiments, the sound insulation cover 140 is provided with an exhaust area F, and the sound insulation cover 140 comprises a sound insulation piece 1401 arranged at a region of the sound insulation cover 140 opposite the first wall 1101 to reduce the operating noise of the heat exchange assembly. Specifically, the sound insulation piece 1401 can be arranged on the surface of the sound insulation cover 140 opposite the first wall 1101, and the plate surface of the sound insulation piece 1401 (i.e., the largest surface of the sound insulation piece 1401) can be arranged substantially perpendicular to the axial direction of the first air vent 112, that is, substantially parallel to the first wall 1101 on which the first air vent 112 is arranged. The sound insulation piece 1401 has the effect of blocking the outward propagation of sound and can reflect sound. The main part of the sound insulation piece 1401 comprises a substantially closed or completely closed plate piece, a sheet piece or the like, that is, the main part of the sound insulation piece 1401 is substantially free of through holes. Optionally, the sound insulation piece 1401 can be a non-mesh plate. Since the sound insulation piece 1401 is substantially or completely free of through holes, it can have the effect of sound insulation. Optionally, the sound insulation piece 1401 can be a solid structure or a hollow structure with an internal cavity, and can be a surface-sealed metal sealing plate. The sound insulation piece 1401 can be fixedly connected to the shell 110.

[0233] The sound insulation piece 1401 is arranged to avoid at least part of the exhaust path. The exhaust path is the path of the airflow flowing outward through the first air vent 112. Specifically, the exhaust path can be understood as the flow path of the airflow after passing through the first air vent 112 without any obstacles, that is, the airflow path formed by the airflow flowing outward under the guiding effect of the first air vent 112 or the components at the first air vent 112. In this embodiment, the airflow guiding mechanism 130 is arranged at the first air vent 112, and the path of the airflow driven by the airflow guiding mechanism 130 to flow outward can be regarded as the exhaust path. That is, the heat exchange assembly 101 has an exhaust area F outside the sound insulation piece 1401, and the exhaust area F is connected to the first air vent 112 and the outside. The airflow flowing out of the first air vent 112 can be discharged to the outside through the exhaust area F.

[0234] Optionally, the soundproof cover 140 further comprises a frame 1402 connected with the first wall 1101, the frame 1402 is arranged around the first air vent 112 and the airflow guide mechanism 130, and the soundproof member 1401 is connected to the frame 1402. The soundproof member 1401 is connected to the shell 110 through the connecting rod 141.

[0235] Optionally, the exhaust area of the soundproof cover 140 can be provided with a ventilation structure corresponding to the first wall 1101, the ventilation structure comprises a plurality of air guide members arranged at intervals along a first direction, and the adjacent air guide members have ventilation gaps therebetween, and each air guide member is arranged to extend in a second direction. The first direction can be any direction substantially parallel to the wall surface of the first wall 1101, for example, the first direction can be the height direction of the first wall 1101, and the second direction Y can be the arrangement direction of the first wall 1101 to the soundproof cover 140, which can be understood with reference to the direction of the first wall 1101 towards the soundproof cover 140, which is substantially consistent with the axial direction of the first air vent 112 and substantially perpendicular to the wall surface of the first wall 1101.

[0236] As shown in FIGS. 3-8, the present embodiment provides a heat exchange assembly 101, comprising a shell 110, a first heat exchanger 120, and a mixed flow fan, the first heat exchanger 120 is arranged in the shell 110. The shell 110 has a first wall 1101, the first wall 1101 is provided with two first air vents 112, and each first air vent 112 is provided with a mixed flow fan. The two side walls adjacent to the first wall 1101 of the shell 110 are respectively a second wall 1102 and a third wall 1103, and the top wall 1104, the second wall 1102 and the third wall 1103 of the shell 110 are provided with a second air vent 113, and the second air vent 113 is provided with a mesh structure 114. The first air vent 112 is an air outlet, and the second air vent 113 is an air inlet. The first heat exchanger 120 is arranged in the shell 110 and is arranged at intervals with the first wall 1101, and the first heat exchanger 120 is located between the first air vent 112 and the second air vent 113, so as to exchange heat with external airflow. The shell 110 is provided with an acoustic cavity 111, and the acoustic cavity 111 is located between the first wall 1101 and the first heat exchanger 120.

[0237] Part of the top wall 1104 is provided as a first plate body 1151, part of the second wall 1102 is provided as a second plate body 1152, the bottom wall 1105 of the shell 110 is part of a third plate body 1153, and part of the third wall 1103 is part of a fourth plate body 1154. The first plate body 1151, the second plate body 1152, the third plate body 1153, and the fourth plate body 1154 are sequentially connected end to end to form a surrounding plate 115, the first plate body 1151, the second plate body 1152, the third plate body 1153, and the fourth plate body 1154 are all sealingly connected with the first wall 1101, the first plate body 1151 is opposite and spaced apart from the third plate body 1153, and the second plate body 1152 is opposite and spaced apart from the fourth plate body 1154. The first heat exchanger 120 is arranged on one side of the sound absorption cavity 111, along the arrangement direction Y of the first plate body 1151 to the third plate body 1153, the first heat exchanger 120 extends from the first plate body 1151 to the third plate body 1153, and along the arrangement direction X of the second plate body 1152 to the fourth plate body 1154, the first heat exchanger 120 extends from the second plate body 1152 to the fourth plate body 1154. The first wall 1101, the first plate body 1151, the second plate body 1152, the third plate body 1153, the fourth plate body 1154, and the first heat exchanger 120 form the sound absorption cavity 111. The inner wall surface of the first wall 1101, the plate surface of the first plate body 1151 facing the sound absorption cavity 111, the plate surface of the second plate body 1152 facing the sound absorption cavity 111, the plate surface of the third plate body 1153 facing the sound absorption cavity 111, and the plate surface of the fourth plate body 1154 facing the sound absorption cavity 111 are all covered with sound absorption cotton, the grammage of the sound absorption cotton can be about 600, and the sound absorption cotton can be fixed by gluing the fastener 171. The part of the first wall 1101 surrounding the first ventilation opening 112, the first plate body 1151, the second plate body 1152, the third plate body 1153, and the fourth plate body 1154 are closed steel plates, and the second ventilation opening 113 is arranged to avoid the first plate body 1151, the second plate body 1152, and the fourth plate body 1154.

[0238] Optionally, the first wall 1101 can be provided with an indicator light 400, the indicator light 400 is used to indicate the running state of the heat exchange assembly 101, so as to facilitate personnel to understand the running state of the heat exchange assembly 101 from the outside of the heat exchange assembly 101. The indicator light 400 can be arranged on the outer wall surface of the first wall 1101 through a support.

[0239] Some embodiments of the present application also provide a heat exchange device, comprising a compressor 150, a throttling assembly 160, a second heat exchanger 180, a refrigerant pipeline 190, and a heat exchange assembly. The heat exchange assembly can be the heat exchange assembly provided by the present application or any embodiment of the present application. The compressor 150, the first heat exchanger 120, the throttling assembly 160, and the second heat exchanger 180 are sequentially connected through the refrigerant pipeline 190 to form a refrigerant circuit.

[0240] Any one of the compressor 150, the throttling assembly 160 and the second heat exchanger 180 can also be integrated in the housing 110, of course, these components can also be independently provided.

[0241] The heat exchange device of the embodiment has the same beneficial effects as the heat exchange assembly of the present application or any embodiment of the present application.

[0242] Some embodiments of the present application also provide an energy storage device 10, comprising a battery 12 and a thermal management system 14 for adjusting the temperature of the battery 12; wherein the thermal management system 14 comprises a second heat exchange circuit 200 and a first heat exchange circuit 100, the second heat exchange circuit 200 is used for heat exchange with the battery 12; the first heat exchange circuit 100 comprises a heat exchange device or a heat exchange assembly, the heat exchange device can be the heat exchange device of the present application or any embodiment of the present application, the heat exchange assembly can be the heat exchange assembly of the present application or any embodiment of the present application, the first heat exchange circuit 100 is used for heat exchange with the second heat exchange circuit 200.

[0243] The energy storage device 10 of the embodiment has the same beneficial effects as the heat exchange assembly of the present application or any embodiment of the present application.

[0244] According to some embodiments of the present application, the energy storage device 10 also comprises a cabinet 11 for accommodating the battery 12, and the heat exchange assembly is arranged inside or outside the cabinet 11.

[0245] Some embodiments of the present application also provide a charging system, comprising a charging pile, the charging system further comprises the energy storage device 10 of the present application or any embodiment of the present application, the charging pile is electrically connected with the battery 12 of the energy storage device 10, and the energy storage device 10 is used for providing electric energy for the charging pile.

[0246] The charging pile refers to a power supply device for providing power supply for electric devices (such as electric vehicles) and the like. The energy storage device 10 can convert the current of the energy storage device 10 into electric energy for the charging pile and the like through the power conversion device.

[0247] The charging system of the embodiment has the same beneficial effects as the energy storage device 10 of the present application or any embodiment of the present application.

[0248] The above description of each embodiment tends to emphasize the differences between each embodiment, and the same or similar parts can be referred to each other, and for the sake of brevity, the description is not repeated herein.

[0249] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced equivalently. Such modifications or replacements do not change the essence of the corresponding technical solutions, which should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat exchange assembly, wherein, The shell comprises a first wall, and a first air vent is arranged on the first wall. A first heat exchanger is arranged in the shell and spaced apart from the first wall, and the first heat exchanger is used for heat exchange with external airflow. An airflow guide mechanism is arranged at the first air vent, and the airflow guide mechanism is used for guiding airflow to flow through the first heat exchanger. An acoustic cavity is arranged in the shell, and the shell further comprises a surrounding plate, the surrounding plate is arranged around the airflow guide mechanism and the first heat exchanger, and the first wall, the first heat exchanger and the surrounding plate surround to form the acoustic cavity. The surrounding plate is arranged on the outer side of the first heat exchanger in the circumferential direction of the first heat exchanger, and the surrounding plate is sealingly connected with the first wall.

2. The heat exchange assembly of claim 1, wherein, The surrounding plate is at least partially arranged as a wall of the shell.

3. The heat exchange assembly of claim 1 or 2, wherein, The surrounding plate comprises a first plate body, a second plate body, a third plate body and a fourth plate body connected in sequence, the first plate body, the second plate body, the third plate body and the fourth plate body are all sealingly connected with the first wall, the first plate body and the third plate body are oppositely and spacedly arranged, the second plate body and the fourth plate body are oppositely and spacedly arranged, along the arrangement direction of the first plate body to the third plate body, the first heat exchanger extends from the first plate body to the third plate body, and / or, along the arrangement direction of the second plate body to the fourth plate body, the first heat exchanger extends from the second plate body to the fourth plate body.

4. Heat exchange assembly according to any of claims 1-3, wherein The first wall and / or the surrounding plate is / are arranged as a porous acoustic structure.

5. Heat exchange assembly according to any of claims 1-4, wherein The inner wall surface of the first wall is provided with a porous acoustic structure, and / or the plate surface of the surrounding plate facing the acoustic cavity is provided with a porous acoustic structure.

6. Heat exchange assembly according to any of claims 1-5, wherein The porous acoustic structure comprises acoustic cotton, and the grammage of the acoustic cotton is 200-600.

7. The heat exchange assembly of claim 5 or 6, wherein, The porous acoustic structure is attached to the first wall and / or the surrounding plate.

8. The heat exchange assembly of claim 6, wherein, The porous acoustic structure is bonded to the first wall and / or the surrounding plate.

9. The heat exchange assembly of claim 8, wherein, The porous acoustic structure is connected to the first wall and / or the surrounding plate by fasteners. The surrounding plate is arranged as a closed plate body, and / or the part of the first wall around the first air vent is arranged as a closed plate body.

10. The heat exchange assembly of any of claims 1-4 and 6-9, wherein, The shell is provided with a second air vent, one of the first air vent and the second air vent is an air inlet of the shell, and the other is an air outlet of the shell, and the second air vent is arranged as a mesh structure.

11. Heat exchange assembly according to any of claims 1-10, wherein The airflow guide mechanism comprises:

12. The heat exchange assembly of any one of claims 1-11, wherein, An air guide ring is mounted on the first wall. A blade wheel assembly comprises a blade wheel and a blade, the blade wheel is arranged in a cylindrical shape, the blade wheel is arranged on the outer side of the blade and is fixedly connected with the blade, the two ends of the air guide ring in the axial direction are an air ring air inlet end and an air ring air outlet end respectively, the two ends of the blade wheel in the axial direction are a blade wheel air inlet end and a blade wheel air outlet end respectively, along the axial direction of the blade wheel, the air ring air outlet end is arranged on the inner side of the blade wheel air inlet end, and along the radial direction of the blade wheel, the air guide ring is gap-fitted with the blade wheel, and the blade wheel assembly is configured to be rotatable relative to the air guide ring. ​ 13. The heat exchange assembly of claim 12, wherein, Part of the air guide ring protrudes from the inner wall surface of the first wall to form a convex portion, and a porous sound absorption structure is arranged around the periphery of the convex portion, and the side of the porous sound absorption structure away from the inner wall surface is flush with the end surface of the convex portion.

14. The heat exchange assembly of claim 12 or 13, wherein, The impeller is provided with a blocking portion protruding from the outer peripheral wall of the impeller.

15. The heat exchange assembly of any one of claims 1-14, wherein, The heat exchange assembly further comprises a sound insulation cover arranged outside the first wall, the sound insulation cover being arranged to connect the first wall and surround the first air vent and the airflow guide mechanism.

16. A heat exchange apparatus wherein, The heat exchange device comprises a compressor, a throttling assembly, a second heat exchanger, a refrigerant pipeline, and the heat exchange assembly according to any one of claims 1-15, the compressor, the first heat exchanger, the throttling assembly, and the second heat exchanger being connected in sequence by the refrigerant pipeline.

17. An energy storage device, wherein, Comprise: a battery; a thermal management system for regulating the temperature of the battery; wherein the thermal management system comprises: a first heat exchange circuit for heat exchange with the battery; and a second heat exchange circuit comprising the heat exchange assembly according to any one of claims 1-15 or the heat exchange device according to claim 16, the second heat exchange circuit being used for heat exchange with the first heat exchange circuit.

18. The energy storage device of claim 17, wherein, The energy storage device further comprises a cabinet for accommodating the battery, and the heat exchange assembly is arranged inside or outside the cabinet.

19. A charging system, wherein, Comprise: a charging pile; and the energy storage device according to claim 17 or 18, the charging pile being electrically connected with the battery of the energy storage device, and the energy storage device being used for providing electric energy for the charging pile. ​

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