Energy storage apparatus and charging system

Abstract

The present application relates to the technical field of energy storage-related devices, and discloses an energy storage apparatus and a charging system. The energy storage apparatus comprises a compartment body, a battery apparatus, and a heat exchange assembly; the battery apparatus is accommodated in the compartment body; the heat exchange assembly is used for regulating the temperature of the battery apparatus; the heat exchange assembly comprises a housing, a first heat exchanger, and a fan; the first heat exchanger is provided in the housing, and is used for performing heat exchange with the battery apparatus; the fan is provided in the housing, and is used for performing heat exchange with the first heat exchanger; the housing comprises a first wall and a second wall which are arranged opposite to each other; the fan is provided on the first wall; the second wall comprises an air outlet and a blocking plate; the blocking plate is provided in a middle area of the second wall; and a sound-absorbing structure is provided between the first wall and the second wall. The present invention reduces noise of the energy storage apparatus and improves the operating environment of the energy storage apparatus.

Description

Energy storage device and charging system

[0001] Cross Reference to Related Applications

[0002] This application claims priority to International Patent Application No. PCT / CN2024 / 110401, filed on August 7, 2024, entitled “Heat exchange assembly, heat exchange device, energy storage device and charging system”, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present application relates to the technical field of energy storage related devices, and in particular to an energy storage device and a charging system. BACKGROUND

[0004] The background section provided herein is merely for information and is not necessarily prior art.

[0005] 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 impact on the working environment of the energy storage device. SUMMARY

[0006] In view of the above problems, the present application provides an energy storage device and a charging system to at least alleviate the problem of large noise of the energy storage device.

[0007] The first aspect of the present application provides an energy storage device, comprising a cabinet, a battery device and a heat exchange assembly, the battery device being accommodated in the cabinet; the heat exchange assembly is used to regulate the temperature of the battery device, the heat exchange assembly comprising a shell, a first heat exchanger and a fan, the first heat exchanger being arranged in the shell, the first heat exchanger being used to exchange heat with the battery device; the fan is arranged in the shell, and the fan is used to exchange heat with the first heat exchanger; the shell comprises a first wall and a second wall arranged opposite to each other, the fan is arranged on the first wall, the second wall comprises an air outlet and a baffle, the baffle is arranged in the middle region of the second wall, and a sound absorbing structure is arranged between the first wall and the second wall.

[0008] In the technical scheme of the present application, the second wall comprises an air outlet and a baffle, the airflow guided by the fan can flow out from the air outlet, the baffle is arranged in the middle region where the noise is large, the noise can be blocked and reflected by the baffle, the reflected noise is absorbed by the sound absorbing structure between the first wall and the second wall, the noise generated by the energy storage device is reduced, and the operating environment of the energy storage device is improved.

[0009] In some embodiments of the present application, the fan is arranged to blow air in a diagonal direction, and the baffle is arranged opposite to the fan along the thickness direction of the first wall. The baffle is arranged to avoid the air exhaust path of the fan, so that the air flow can be smoothly discharged, improving the smoothness of air flow discharge, thereby appropriately reducing the power and operating noise of the fan, and improving the heat exchange efficiency of the heat exchange assembly.

[0010] In some embodiments of the present application, the air outlet is arranged around the baffle. The smoothness of air flow discharge is improved, thereby appropriately reducing the power and operating noise of the fan, and improving the heat exchange efficiency of the heat exchange assembly.

[0011] In some embodiments of the present application, the second wall further comprises a plurality of connecting rods, the plurality of connecting rods are arranged at intervals along the circumference of the baffle, the baffle is connected with the plurality of connecting rods, the plurality of connecting rods are fixed with the first wall, and the air outlet is formed between adjacent connecting rods. Alternatively, the second wall further comprises a first mesh cover, the first mesh cover surrounds the circumference of the baffle, the baffle is connected with the first mesh cover, and the baffle is fixedly arranged through the first mesh cover, and the mesh holes on the first mesh cover are the air outlet. When the baffle is connected to the shell through the connecting rod, the structure is simple, the volume of the connecting rod is small, the interference with the air flow is small, the air resistance is reduced, and the heat exchange efficiency of the heat exchange assembly is improved. When the baffle is fixed through the first mesh cover, the first mesh cover can allow air flow, so that the heat exchange assembly can effectively exhaust air, and the first mesh cover can also play a protection role.

[0012] In some embodiments of the present application, a plurality of fans are arranged on the first wall, and the baffle is arranged opposite to each of the plurality of fans.

[0013] The baffle is a plurality of baffles, and the plurality of baffles correspond to and are arranged at intervals with the plurality of fans one by one, or one baffle corresponds to a plurality of fans. In the scheme that the baffles arranged at intervals between the positions corresponding to each of the fans, the baffle can be adaptively designed or assembled according to each fan, and the processing and assembly of the baffle are more flexible. In the case that the baffle at the position corresponding to each of the fans is an integral structure, the baffle is convenient to assemble with the shell, and the assembly efficiency is high.

[0014] In some embodiments of the present application, the baffle is arranged in a circular or elliptical shape.

[0015] In some embodiments of the present application, the baffle is arranged in a solid structure.

[0016] In some embodiments of the present application, the baffle is arranged in a metal plate.

[0017] In some embodiments of the present application, the baffle occupies 30% to 50% of the area of the second wall.

[0018] In some embodiments of the present application, the length dimension L1 of the baffle along the length direction of the second wall is 70%-90% of the length dimension L2 of the second wall; and / or, the width dimension W1 of the baffle along the width direction of the second wall is 30%-60% of the width dimension W2 of the second wall.

[0019] In some embodiments of the present application, the baffle is provided with the sound-absorbing structure on the plate surface facing the first wall; and / or, the first wall is provided with the sound-absorbing structure on the side facing the second wall.

[0020] In some embodiments of the present application, the air outlet is provided with an air outlet grille structure. The air outlet grille structure has a good rainproof effect, which can reduce the possibility of rainwater flowing back into the heat exchange assembly.

[0021] In some embodiments of the present application, the shell further comprises a surrounding plate connected between the first wall and the second wall, and the surrounding plate surrounds the fan. In this embodiment of the heat exchange assembly, when noise propagates outward, the surrounding plate can stop, reflect and reduce part of the outwardly propagating noise, so that the noise of the heat exchange assembly is reduced.

[0022] In some embodiments of the present application, the side of the surrounding plate facing the fan is provided with the sound-absorbing structure.

[0023] In some embodiments of the present application, the heat exchange assembly is arranged in the bin body, and the surrounding plate is arranged in a closed structure.

[0024] In some embodiments of the present application, the sound-absorbing structure is arranged as a porous sound-absorbing structure and / or a resonant sound-absorbing structure.

[0025] In some embodiments of the present application, there is a spacing gap between the fan and the baffle along the arrangement direction from the first wall to the second wall. The spacing gap can reserve a distance between the air outlet of the fan and the sound-absorbing plate, form a ventilation transition section, reduce the air resistance, and improve the guiding effect of the fan on the airflow.

[0026] In some embodiments of the present application, the wind speed of the heat exchange assembly at the baffle is less than the wind speed of the heat exchange assembly at the air outlet.

[0027] In some embodiments of the present application, the fan comprises a wind guide ring and an impeller assembly, the wind guide ring is installed on the first wall; the impeller assembly comprises an impeller and a blade, the impeller is cylindrically arranged, the impeller surrounds the outside of the blade and is fixedly connected with the blade, the two axial ends of the wind guide ring are respectively a wind ring air inlet end and a wind ring air outlet end, the two axial ends of the impeller are respectively an impeller air inlet end and an impeller air outlet end, along the axial direction of the wind guide ring, the wind ring air outlet end is inserted into the impeller air inlet end, so that the wind guide ring is in communication with the impeller, and in the radial direction of the wind guide ring, the wind guide ring and the impeller are in clearance fit, the impeller assembly is configured to be able to rotate around its own axis relative to the wind guide ring; the impeller is provided with a blocking part, the blocking part is arranged to protrude from the outer peripheral wall of the impeller. When the fan of the embodiment is running, the impeller assembly rotates, and the airflow is pressed from the wind guide ring to the air outlet (i.e. the impeller air outlet end) of the impeller assembly. The wind ring air outlet end of the wind guide ring is inserted into the impeller air inlet end of the impeller, so that the stepped surface formed by the sleeve connection of the wind guide ring and the impeller can avoid the flow path of the airflow, improve the smoothness of the airflow, and reduce the possibility of increasing noise caused by turbulence of the airflow in the process of flowing from the wind guide ring to the impeller. At the same time, the blocking part can stop the airflow flowing in the opposite direction along the outside 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 at the connection between the wind guide ring and the impeller, causing separation and turbulence of the airflow in the impeller, and further reduce the noise of the airflow, so as to reduce the overall operating noise of the fan and the energy storage device using the fan.

[0028] In some embodiments of the present application, the shell is also provided with an air inlet in communication with the inside of the shell, and the air inlet is provided in a mesh structure. The mesh of the mesh structure can make the airflow formed by the air flow into the accommodation cavity, and at the same time, the mesh structure can reduce the possibility of large debris entering the shell, and can also reduce the possibility of the operator putting his hand into the accommodation cavity and causing danger. The mesh of the mesh structure can be a hexagonal mesh, a diamond-shaped mesh, a circular mesh, etc.

[0029] In some embodiments of the present application, the heat exchange assembly further comprises a compressor, a throttling assembly, a second heat exchanger and a refrigerant pipeline, and the compressor, the first heat exchanger, the throttling assembly and the second heat exchanger are connected in sequence through the refrigerant pipeline.

[0030] In some embodiments of the present application, the energy storage device further comprises a second heat exchange circuit, and the first heat exchanger exchanges heat with the battery device through the second heat exchange circuit.

[0031] In some embodiments of the present application, the heat exchange assembly is arranged inside or outside the bin body.

[0032] The second aspect of the present application provides a charging system, comprising a charging pile, the charging system further comprising the energy storage device provided by the present application or any of the embodiments of the present application, the charging pile being electrically connected with the battery device of the energy storage device, and the energy storage device being configured to provide electric energy for the charging pile.

[0033] The charging system of the present application has the same beneficial effects as the energy storage device provided by the present application or any of the embodiments of the present application.

[0034] The above description is only a summary of the technical solutions of the present application. In order to enable one skilled in the art to better understand the technical means of the present application, the following detailed description of the specific embodiments of the present application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following detailed description of the specific embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0035] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments, and are not intended to limit the present application. Moreover, the same reference numbers in the entire drawings represent the same components. In the drawings:

[0036] FIG. 1 is a schematic diagram of an energy storage device according to some embodiments of the present application;

[0037] FIG. 2 is a schematic diagram of a partial structure of an energy storage device according to some embodiments of the present application;

[0038] FIG. 3 is a schematic diagram of a heat management system according to some embodiments of the present application;

[0039] FIG. 4 is a schematic diagram of a heat exchange assembly according to some embodiments of the present application;

[0040] FIG. 5 is a schematic diagram of a partial structure of a heat exchange assembly according to some embodiments of the present application from one perspective;

[0041] FIG. 6 is a schematic diagram of a partial structure of a heat exchange assembly according to some embodiments of the present application from another perspective;

[0042] FIG. 7 is a schematic diagram of a partial cross-sectional view of a heat exchange assembly according to some embodiments of the present application;

[0043] FIG. 8 is a schematic diagram of a heat exchange assembly according to some embodiments of the present application;

[0044] FIG. 9 is an enlarged schematic diagram of a mesh structure according to some embodiments of the present application;

[0045] FIG. 10 is a schematic diagram of a structure of a first mesh cover and a baffle according to some embodiments of the present application;

[0046] Fig. 11 is a schematic view of a first mesh and baffle structure according to some embodiments of the present application;

[0047] Fig. 12 is a schematic view of a fan according to some embodiments of the present application;

[0048] Fig. 13 is a schematic view of a second wall according to some embodiments of the present application;

[0049] Fig. 14 is a schematic view of a heat exchange assembly according to some embodiments of the present application;

[0050] Fig. 15 is a schematic view of a fan according to some embodiments of the present application;

[0051] Fig. 16 is a schematic view of a fan according to some embodiments of the present application;

[0052] Fig. 17 is an assembled view of a fan according to some embodiments of the present application;

[0053] Fig. 18 is a schematic view of an impeller assembly according to some embodiments of the present application;

[0054] Fig. 19 is a schematic view of an impeller assembly according to some embodiments of the present application;

[0055] Fig. 20 is a schematic view of an impeller assembly according to some embodiments of the present application;

[0056] Fig. 21 is a schematic view of an impeller assembly according to some embodiments of the present application;

[0057] Fig. 22 is a schematic view of an impeller assembly according to some embodiments of the present application;

[0058] Fig. 23 is a schematic view of a fan according to some embodiments of the present application.

[0059] The reference signs in the detailed description are as follows: 10, energy storage device; 11, bin body; 12, battery device; 13, bracket; 14, thermal management system; 15, accommodation space; 100, first heat exchange circuit; 101, heat exchange assembly; 110, shell; 111, first wall; 112, air inlet; 113, air outlet; 114, mesh structure; 1141, mesh; 115, first part; 116, second part; 117, partition; 120, first heat exchanger; 130, fan; 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, second wall; 1401, baffle; 1402, coaming; 1403, mounting flange; 141, connecting rod; 142, first mesh cover; 143, first sound absorption structure; 144, second sound absorption structure; 145, third sound absorption structure; 146, grid bar; 150, compressor; 160, throttling assembly; 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; E, air outlet path; F, air outlet area; X, width direction; Y, length direction; Z, thickness direction. DETAILED DESCRIPTION

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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).

[0066] 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 indicating or implying that the indicated device or element 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.

[0067] 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.

[0068] The battery device, also known as a battery, can store electric energy and power the electric device. With the development of new energy, the energy storage device with the battery device is gradually widely used due to its large electric energy storage capacity. The energy storage device can include a bin body (specifically, a cabinet body), and the battery device is arranged in the bin body. The number of battery devices is usually multiple.

[0069] Temperature has a great influence on the performance of the battery device. Too low temperature will reduce the activity of the battery device and may cause the battery device to be unable to charge and discharge. Too high temperature will have the risk of causing thermal runaway. The energy storage device is usually configured with a thermal management system to regulate the temperature of the battery device in the energy storage device.

[0070] In some energy storage devices, the thermal management system regulates the temperature of the battery device through a refrigerant heat exchange device, for example, a water chiller can be used to cool the battery device 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 temperature reduction of the battery device as an example, the evaporator is used for heat exchange with the battery device to reduce the temperature of the battery device, for example, the evaporator can directly contact and exchange heat with the battery device, and for another example, the evaporator can exchange heat with the environment where the battery device is located, or the evaporator can exchange heat with the cooling water system connected to the battery device to reduce the temperature of the battery device 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 (air flow). 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 device, 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 that the air volume demand of the air flow guiding mechanism is large, the operating power of the air flow guiding mechanism is increased, and the noise of the operation of the air flow guiding mechanism and the noise formed by the flow of air flow are large.

[0071] How to reduce the noise of the refrigerant heat exchange equipment, so that the energy storage device has a better operating environment, has been the focus of energy storage device research and development. Research has found that the noise generated by the airflow guiding mechanism during operation and the noise formed by airflow flow can be transmitted outward through the air outlet of the shell of the refrigerant heat exchange equipment, making it difficult to reduce noise.

[0072] In view of the problem that the noise of the refrigerant heat exchange equipment is transmitted outward through the air outlet, making it difficult to reduce the noise, the application provides a heat exchange assembly, which comprises a shell, a first heat exchanger, an airflow guiding mechanism and a soundproof cover. The shell has a first wall, the first wall is provided with an air outlet (i.e. the air outlet on the first wall), the airflow guiding mechanism is arranged at the air outlet, the first heat exchanger is arranged in the shell, and the soundproof cover is provided with a soundproof member (for reference baffle) in the area opposite to the first wall. The soundproof cover can be understood as a second wall of the shell.

[0073] The noise in the heat exchange assembly (including the noise generated by the airflow guiding mechanism and the noise generated by the airflow passing through the first heat exchanger, etc.) is transmitted outward through the air outlet. Since the soundproof member is arranged at the position opposite to the first wall, the noise can be transmitted to the soundproof member and blocked and bounced by the soundproof member, so as to consume energy and reduce the noise transmitted to the outside, thereby improving the control ability of the noise.

[0074] The heat exchange assembly of the application can be applied to a water chiller, and the first heat exchanger can be a condenser of the water chiller. The water chiller using the heat exchange assembly of the application can reduce the noise transmitted outward at the air outlet, thereby improving the overall noise problem of the water chiller.

[0075] The heat exchange assembly of the application or any embodiment of the application can be applied to an energy storage device to regulate the temperature of the battery device in the energy storage device. For example, the heat exchange assembly can form a battery thermal management system in combination with a cooling medium circulating device, etc., and exchange heat with the battery device through the cooling medium circulating device, etc. For another example, the heat exchange assembly can be used independently and directly exchange heat with the battery device in the energy storage device or directly exchange heat with the air in the storage body of the energy storage device to reduce the temperature in the storage body. The heat exchange assembly of the application or any embodiment of the application can also be used in an electric device to regulate the temperature of the battery device 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 or a ship, etc. The heat exchange assembly of 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.

[0076] For ease of description, the heat exchange assembly is applied to an energy storage device in the embodiments of the application.

[0077] 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 housing 11, a battery device 12, and a thermal management system 14. The housing 11 is provided with a bracket 13 inside. The battery device 12 is arranged on the bracket 13.

[0078] For example, the housing 11 can be provided as a cabinet.

[0079] The shape of the housing 11 can be set as needed. The housing 11 can be provided with an opening on one side in the horizontal direction to facilitate assembly and maintenance of the battery device 12. The opening can be provided with a closable door, or can be provided without a door. As shown in FIG. 2, the bracket 13 is connected to the housing 11, and can be an integral structure with the housing 11, or can be fixedly connected by bolts or the like. The battery device 12 inside the housing 11 can be multiple. The housing 11 can be provided with multiple rows of battery devices 12 in the horizontal direction, or can be provided with one row of battery devices 12. Each row of battery devices 12 can be stacked on the bracket 13 from top to bottom inside the housing 11.

[0080] The battery device 12 can also be referred to as a battery, which can include a box body and a battery cell accommodated in the box body. The battery device 12 can be supported on the bracket 13. In each battery device 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. Of course, the battery device 12 can also be that the multiple battery cells are first connected in series, connected in parallel, or connected in a mixed manner to form a battery module, and then multiple battery modules are connected in series, connected in parallel, or connected in a mixed manner to form a whole, and then the whole is accommodated in the box body. The battery device 12 can further include other structures, for example, the battery device 12 can further include a busbar component for realizing electrical connection between the multiple battery cells. Each battery cell can be a secondary battery or a primary battery, and can be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0081] The thermal management system 14 can be used to regulate the temperature of the battery device 12. Specifically, the thermal management system 14 can only regulate the temperature of the battery device 12 to be raised, or can only regulate the temperature of the battery device 12 to be lowered. The thermal management system 14 can have both the function of regulating the temperature of the battery device 12 to be raised and the function of regulating the temperature of the battery device 12 to be lowered, and can be adaptively controlled according to the current temperature of the battery device 12.

[0082] Fig. 3 is a schematic diagram of a heat management system according to some embodiments of the present application. As shown in Fig. 3, the heat management system 14 can include a first heat exchange loop 100 and a second heat exchange loop 200. The second heat exchange loop 200 is configured to exchange heat with the battery device 12. The first heat exchange loop 100 is configured to exchange heat with the second heat exchange loop 200.

[0083] The first heat exchange loop 100 can be formed by a heat exchange assembly 101 (i.e., a heat exchange device). The heat exchange assembly 101 can include a compressor 150, a first heat exchanger 120, a throttling assembly 160, and a second heat exchanger 180, which are connected in series by a refrigerant circuit 190. The second heat exchange loop 200 can be a cooling medium circulation device.

[0084] The heat exchange assembly 101 can be installed in a receiving space 15 of the housing 11 of the energy storage device 10. Alternatively, the heat exchange assembly 101 can be installed outside the housing 11 of the energy storage device 10. As shown in Figs. 4-6, the heat exchange assembly 101 can further include a housing 110. The compressor 150, the first heat exchanger 120, the throttling assembly 160, the second heat exchanger 180, and an air flow guide mechanism can be installed in the housing 110. Alternatively, some of the components of the heat exchange assembly 101 can be installed in the housing 110, and some of the components can be installed outside the housing 110. When the heat exchange assembly 101 is installed outside the housing 11, the first heat exchanger 120 and the air flow guide mechanism (i.e., the fan 130) can be installed in the housing 110. Alternatively, the compressor 150 can be installed in the housing 110 outside the housing 11. Alternatively, all the components of the heat exchange assembly 101 can be installed in the housing 110 outside the housing 11. In some embodiments, as shown in Fig. 4, the housing 110 includes a first portion 115 and a second portion 116, which are connected to each other. The air flow guide mechanism (i.e., the fan 130) and the first heat exchanger 120 can be installed in the first portion 115. The compressor 150 can be installed in the second portion 116. The second heat exchanger 180 and the throttling assembly 160 can be installed in the first portion 115 or the second portion 116. For example, a partition 117 can be installed in the middle of the housing 110 in the height direction, so that the housing 110 is divided into the first portion 115 and the second portion 116. The first portion 115 is located above the second portion 116.

[0085] The shell 110 is provided with an air inlet and an air outlet. The air inlet is used for air to flow into the shell 110, and the air outlet is used for air to flow out of the shell 110. When the shell 110 is arranged in the accommodation space 15, the bin body 11 is provided with a communication port which communicates with the accommodation space 15, so that the air outlet and the air inlet of the shell 110 communicate with the outside of the bin body 11 through the communication port. The communication port can be provided with a mesh structure.

[0086] The first heat exchanger 120 can be used for heat exchange with air, that is, 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 device 12 to increase the temperature of the battery device 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 device 12 to reduce the temperature of the battery device 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 assembly 101 can also be provided with a corresponding valve control assembly, so that the first heat exchanger 120 and the second heat exchanger 180 are switched under different working conditions.

[0087] The compressor 150 is a driven fluid machine that lifts low-pressure gas to high-pressure gas. It sucks in low-temperature and low-pressure refrigerant from its own refrigerant inlet, compresses it by driving the piston through the motor, and discharges high-temperature and high-pressure refrigerant to its own refrigerant outlet to provide power for the refrigerant circulation. Refrigerant, also known as refrigerant, snow species, etc., is a medium substance used to complete energy conversion in various heat engines.

[0088] 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 assembly 101 can also be provided with a fan 130, which can be used to guide the airflow to flow through the first heat exchanger 120. The fan 130 can be a fan, specifically an axial 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 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.

[0089] 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, heat exchange can be performed 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, and the refrigerant in the second heat exchanger 180 exchanges heat with the cooling medium in the first medium containing part. Optionally, in some embodiments, the second heat exchanger 180 is provided with a medium passage, which can be used as the first medium containing part, and 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 circulating 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 achieve heat exchange between the second heat exchanger 180 and the cooling medium. Optionally, in another embodiment, the first medium containing part can be a liquid storage tank, a liquid storage tank, a communication pipe, etc., and 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.

[0090] The second heat exchange circuit 200 includes a circulating pipeline 220 and a heat exchange member 210. The heat exchange member 210 is a member that can conduct heat, which can be a water cooling plate. The cooling medium exchanges heat with the battery device 12 through the heat exchange member 210. The heat exchange member 210 can be arranged outside the battery device 12 and can be arranged in close contact with the battery device 12 to facilitate heat exchange between the battery device 12 and the heat exchange member 210. The heat exchange member 210 can also be arranged inside the battery device 12, for example, between adjacent battery monomers in the battery device 12. The heat exchange member 210 can also be part of the box of the battery device 12, i.e., part of the box as the heat exchange member 210.

[0091] 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 connected with the circulating pipeline 220. The circulating pipeline 220 can be provided with a driving assembly 230, which is used to drive the cooling medium to flow from the corresponding first medium containing part of the second heat exchanger 180 to the heat exchange member 210, and then back to the corresponding first medium containing part of the second heat exchanger 180 through the heat exchange member 210. The cooling medium can be a liquid, such as water, etc., and the cooling medium can also be a gas or other flowable substance.

[0092] The throttling assembly 160 is used to throttle the refrigerant to change the pressure, which can play a role in throttling, pressure reduction and flow regulation. The throttling assembly 160 can be an expansion valve.

[0093] Referring to FIG. 3, in some embodiments, the first heat exchanger 120 of the heat exchange assembly 101 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 loop (the present embodiment is mainly described by taking the refrigerant loop as a cooling loop), which can be used for refrigeration, e.g., as a part of a water chiller. The general working principle of the heat exchange assembly 101 for refrigeration is as follows: the second heat exchanger 180 of the refrigerant loop exchanges heat with the cooling medium of the second heat exchange loop 200, the cooling medium of the second heat exchange loop 200 passes through the heat exchange member 210 outside the battery, absorbs the heat generated by the battery device 12, and the temperature of the cooling medium is increased, enters the second heat exchanger 180, and the cooling medium is absorbed by the heat absorption of the evaporated refrigerant in the second heat exchanger 180, and the refrigerant after the heat absorption is driven back to the compressor 150 in the refrigerant loop for compression to form a high-temperature and high-pressure state, and 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 (the fan 130), and the medium-temperature and high-pressure state refrigerant passes through the expansion valve (the throttling assembly 160) to form a low-temperature and low-pressure two-phase state refrigerant and returns to the second heat exchanger 180 to form a cycle.

[0094] Continuing to refer to FIG. 3, the heat exchange assembly 101 can further be provided with a heating assembly 300, which can heat the cooling medium, and the circulation pipeline 220 is in communication with the heating assembly 300, and the heating assembly 300 can be started when the battery device 12 needs to be heated. The heating assembly 300 can include an electric heating member and a second medium containing member, which can be a pipe, a tank, a box, etc., and can be connected in the circulation pipeline 220, and the electric heating member is arranged in the second medium containing member to heat the cooling medium in the second medium containing member. The electric heating member 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 and power-saving electric heater.

[0095] It should be noted that the scheme of providing the heat exchange assembly 101 with the heating assembly 300 can be used in combination with the scheme of using the refrigerant circuit of the heat exchange assembly 101 for refrigeration. The second medium containing member of the heating assembly 300 is provided in parallel with the first medium containing member corresponding to the second heat exchanger 180 in the circulation pipeline 220. In some implementations, when the heat exchange assembly 101 is in use, the second medium containing member of the heating assembly 300 and the second heat exchanger 180 and the second heat exchange circuit 200 can be selectively connected to the circulation pipeline 220. Specifically, this 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 it is necessary to warm up the battery device 12, 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 connected to the first medium containing member corresponding to the second heat exchanger 180, the heating assembly 300 is closed, and the circulation pipeline 220 is disconnected from the first medium containing member 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 member 210 corresponding to the battery device 12 to cool the battery device 12, and the cooling medium is delivered back to the second heat exchanger 180 after passing through the heat exchange member 210; when it is necessary to cool the battery device 12, 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 disconnected from the first medium containing member corresponding to the second heat exchanger 180, the heating assembly 300 is opened, and the circulation pipeline 220 is connected to the second medium containing member 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 member 210 corresponding to the battery device 12 to heat the battery device 12, and the cooling medium is delivered back to the heating assembly 300 after passing through the heat exchange member 210. In other implementations, when the heat exchange assembly 101 is in use, the second medium containing member of the heating assembly 300 and the second heat exchanger 180 and the second heat exchange circuit 200 can be both connected to the circulation pipeline 220, when it is necessary to warm up the battery device 12, 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, and the heating assembly 300 is closed, when it is necessary to cool the battery device 12, 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.

[0096] It should be noted that the heat management system 14 of the embodiment can further include temperature sensors and the like. For example, a temperature sensor can be arranged on the battery device 12 to detect the temperature of the battery device 12; a temperature sensor can be arranged in the bin 11 in which the battery device 12 is located to detect the temperature in the bin 11 in which the battery device 12 is located; and a temperature sensor can be arranged outside the bin 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 control the heat exchange assembly 101 adaptively based on the detected temperature of the temperature sensors to adjust the temperature of the battery device 12. Specifically, the operation control of the heat exchange assembly 101 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 to control the operation of the heat exchange assembly 101.

[0097] It should be noted that in some other embodiments, the first heat exchanger of the heat exchange assembly of the heat management system can also be directly in contact with the battery device and exchange heat with the battery device.

[0098] As shown in FIGS. 4 to 8, FIG. 7 is a partial cross-sectional schematic diagram of the heat exchange assembly according to some embodiments of the present application, and FIG. 8 is a structural schematic diagram of the heat exchange assembly according to some embodiments of the present application. The heat exchange assembly according to the embodiments of the present application includes a housing 110, a first heat exchanger 120, and an airflow guiding mechanism. The housing 110 has a receiving cavity, a first wall 111, and a second wall 140. The first wall 111 surrounds the receiving cavity and is provided with an air outlet 113 that communicates with the receiving cavity. The first heat exchanger 120 is arranged in the receiving cavity and is used to exchange heat with external airflow. A fan 130 is arranged at the air outlet 113 and is used to guide the airflow to flow through the first heat exchanger 120. The second wall 140 is arranged to connect the first wall 111 and surrounds the air outlet 113 and the fan 130. The second wall 140 is provided with an air outlet area F, and the second wall 140 includes a sound insulation member arranged at a region of the second wall 140 opposite to the first wall 111 to reduce the operating noise of the heat exchange assembly 101.

[0099] The air outlet 113 of the first wall 111 is an air outlet of the first wall 111.

[0100] The second wall 140 forms a sound insulation cover, which can have an air outlet and a baffle. The air outlet of the second wall 140 is located in the air outlet area F. It should be noted that, in this document, the air outlet other than the air outlet specially defined refers to the air outlet of the second wall.

[0101] The shell 110 is an internally hollow member, which can be shaped as needed, and can be a cuboid structure. The air outlet 113 is connected to the outside and the inside of the shell 110, so that air (air flow) can flow from the inside of the shell 110 to the outside through the air outlet 113. The air outlet 113 can be arranged on any wall of the shell 110, such as the top wall, the side wall, or the bottom wall of the shell 110. The shell 110 can also be provided with an air inlet 112, which is connected to the outside and the inside of the shell 110, so that air can flow from the outside to the inside of the shell 110. The air inlet 112 and the air outlet 113 can be arranged on different walls of the shell 110 to reduce the mutual influence between the air inlet and the air outlet and improve the heat exchange effect of the heat exchange assembly. The air inlet 112 and the air outlet 113 can also be arranged on the same side wall of the shell 110, and in this case, the air inlet 112 and the air outlet 113 can be arranged separately to reduce the mutual influence between the air inlet and the air outlet. The shell 110 can be provided with one or more air outlets 113 and one or more air inlets 112.

[0102] The first wall 111 is the wall of the shell 110 on which the air outlet 113 is arranged. The first wall 111 can be part of the outer wall of the shell 110. The air outlet 113 can be arranged on any wall of the shell 110, such as the top wall, the side wall, or the bottom wall of the shell 110. The air inlet 112 and the air outlet 113 can be arranged on different walls of the shell 110 to reduce the mutual influence between the air inlet and the air outlet and improve the heat exchange effect of the heat exchange assembly. The air outlet 113 and the air inlet 112 can also be arranged on the same side wall of the shell 110, and in this case, the air inlet 112 and the air outlet 113 can be arranged separately to reduce the mutual influence between the air inlet and the air outlet. The shell 110 can be provided with one or more air outlets 113 and one or more air inlets 112.

[0103] In one implementation, as shown in FIG. 5, FIG. 7 and FIG. 8, the shell 110 is substantially cuboid, one of the side walls of the shell 110 is provided with the air outlet 113, the side wall adjacent to the side wall provided with the air outlet 113 is provided with multiple air inlets 112, the lower end of the side wall provided with the air inlets 112 is also provided with the air inlets 112, and the top wall of the shell 110 is also provided with the air inlets 112. The air inlets 112 can be provided with the mesh structure 114, as shown in FIG. 9, which is an enlarged view of the mesh structure 114 according to some embodiments of the present application. The mesh holes 1141 of the mesh structure 114 can allow air to flow into the shell 110, while the mesh structure 114 can also reduce the possibility of large debris entering the shell 110 and the possibility of the operator reaching into the shell 110 and causing danger. The mesh holes 1141 of the mesh structure 114 can be hexagonal, diamond-shaped, circular, etc.

[0104] It should be noted that the black fuzzy areas in FIG. 5, FIG. 6 and FIG. 8 are mesh structures 114, which are 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. 9. The mesh structure 114 of each black fuzzy area can be the same as the mesh structure 114 shown in FIG. 9.

[0105] The axial direction of the air outlet 113, that is, the axial direction of the air outlet 113, can be understood with reference to the extension direction of the center line of the air outlet 113. Optionally, the axial direction of the air outlet 113 is substantially perpendicular to the first wall 111 where the air outlet 113 is located.

[0106] The first heat exchanger 120 can be a refrigerant heat exchanger, which can be provided with a refrigerant channel. The airflow can be an airflow formed by air, and the external airflow refers to an airflow formed by 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 can be arranged inside the shell 110 and can be fixedly connected with the shell 110 by a bracket or the like. The first heat exchanger 120 is located between the air inlet 112 and the air outlet 113, which can be understood as that the first heat exchanger 120 is located on the airflow flow path between the air inlet 112 and the air outlet 113, that is, the airflow formed by the fan 130 can flow through the first heat exchanger 120.

[0107] The air flow guiding mechanism can be a fan, and the fan 130 can be a blower fan, an axial flow fan, a mixed flow fan, etc. The fan 130 can be arranged at the air inlet 112. The fan 130 can be fixedly installed on the shell 110, and the fan 130 can be arranged in the shell 110 or at least partially exposed outside the shell 110. Specifically, the fan 130 can be arranged at a position corresponding to the air inlet 112, for example, arranged in the air inlet 112, arranged on the inner side or outer side of the air inlet 112, etc. When the fan 130 is arranged in the air inlet 112 or the air outlet 113, the fan 130 can be partially exposed outside the shell 110.

[0108] The second wall 140 can be arranged outside the first wall 111, that is, the second wall 140 is arranged on the side of the first wall 111 away from the accommodation cavity. The second wall 140 can be arranged outside the fan 130 and the air outlet 113 in the circumferential direction, and can be annularly arranged. The shape of the second wall 140 can be approximately rectangular, circular, elliptical, or other shapes. The second wall 140 can be fixedly connected to the first wall 111 by welding, bolt connection, etc.

[0109] The sound insulation member can be a baffle 1401, which can be arranged at a position opposite to the second wall 140 and the first wall 111. The surface of the baffle 1401 (i.e., the surface with the largest area of the baffle 1401) can be arranged approximately perpendicular to the axial direction of the air outlet 113, that is, approximately parallel to the first wall 111 on which the air outlet 113 is arranged. The baffle 1401 has the function of blocking the outward propagation of sound and can reflect sound. The main part of the baffle 1401 includes a substantially closed or completely closed plate member, a sheet member, etc. That is, the main part of the baffle 1401 is substantially free of through holes. Optionally, the baffle 1401 can be a non-mesh plate. Because the baffle 1401 is substantially or completely free of through holes, the baffle 1401 can have the function of sound insulation. Optionally, the baffle 1401 can be a solid structure or a hollow plate structure with a hollow interior and a closed surface. For example, the baffle 1401 can be a metal sealing plate with a sealed surface. The baffle 1401 can be fixedly connected to the shell 110. Optionally, as shown in FIGS. 5 and 8, the baffle 1401 can be provided with an indicator light 400. The indicator light 400 is used to indicate the operating state of the heat exchange assembly, so that personnel can understand the operating state of the heat exchange assembly from the outside of the heat exchange assembly.

[0110] The heat exchange assembly has an air exhaust area F outside the baffle 1401, and the air exhaust area F is formed with an air outlet which can communicate with the air exhaust port 113 and the outside. The airflow flowing out of the air exhaust port 113 can be discharged to the outside through the air exhaust area F (i.e. the air outlet on the second wall 140). Optionally, in some implementations, at least one side of the baffle 1401 can be the air exhaust area F (i.e. the air outlet on the second wall 140) along the axial direction perpendicular to the air exhaust port 113 (which can be understood with reference to the surface on which the first wall 111 or the baffle 1401 is located), for example, as shown in FIGS. 5 and 8, and as shown in FIGS. 10 and 11, FIG. 10 is a structural schematic diagram of the first mesh cover and the baffle according to some embodiments of the present application, and FIG. 11 is a structural schematic diagram of the first mesh cover and the baffle according to some other embodiments of the present application. The air exhaust area F (which can be understood with reference to the position of the first mesh cover 142) can be arranged around the baffle 1401, that is, the baffle 1401 is arranged around the periphery of the air exhaust area F. Optionally, in some other implementations, the baffle 1401 can also be arranged around the air exhaust area F.

[0111] It should be noted that, in this document, the air outlet on the second wall 140 can be understood with reference to the position of the air exhaust area F unless otherwise specified.

[0112] During the operation of the heat exchange assembly of the present embodiment, the noise generated by the heat exchange assembly (including the noise generated by the operation of the fan 130 and the noise generated by the airflow flowing through the first heat exchanger 120, etc.) can be blocked and reflected by the baffle 1401 when it propagates outward from the air exhaust port 113. The energy of the noise is attenuated under the blocking and reflecting action of the baffle 1401, thereby reducing the noise propagating outward from the heat exchange assembly and improving the operating environment of the heat exchange assembly.

[0113] It should be noted that the first heat exchanger 120 in FIG. 6 only schematically shows a part of the top end and the bottom end. Actually, the first heat exchanger 120 is a whole structure from the top end to the bottom end.

[0114] According to some embodiments of the present application, the baffle 1401 is arranged to avoid at least part of the air exhaust path E, and the air exhaust path E is the path of the airflow flowing outward through the air exhaust port 113, as shown in FIGS. 5, 7, 8, 10 and 11.

[0115] The air exhaust path E can be understood as the flow path of the airflow after passing through the air exhaust port 113 without any other obstacles, that is, the airflow path formed by the airflow under the guiding action of the air exhaust port 113 or the components at the air exhaust port 113. In the present embodiment, the fan 130 is arranged at the air exhaust port 113, and the path of the airflow driven by the fan 130 to flow outward can be regarded as the air exhaust path E.

[0116] The setting position of the baffle 1401 avoids part of the exhaust air path E. It can be understood that at least part of the exhaust air path E does not pass through the baffle 1401, that is, at least part of the airflow flows out of the exhaust port 113 and can directly flow out through the exhaust area F. Specifically, the baffle 1401 can avoid all of the exhaust air path E, or can not avoid part of the exhaust air path E.

[0117] It should be noted that if part of the exhaust air path E passes through the baffle 1401, the airflow flowing to the baffle 1401 can be reversed to flow to the exhaust area F (that is, the air outlet on the second wall 140) after being blocked by the baffle 1401, so as to flow outwards. The other arrows in FIG. 7 represent the flow direction of the airflow.

[0118] The heat exchange assembly of the embodiment avoids at least part of the exhaust air path E by the setting position of the baffle 1401, so that at least part of the airflow discharged through the exhaust port 113 can be discharged more smoothly, improving the discharge smoothness of the airflow, thereby appropriately reducing the power and operating noise of the fan 130, and improving the heat exchange efficiency of the heat exchange assembly.

[0119] In some embodiments of the present application, the heat exchange assembly 101 includes a shell 110, a first heat exchanger 120 and a fan 130. The first heat exchanger 120 is arranged in the shell 110 and is used for heat exchange of the battery device 12. The fan 130 is arranged in the shell 110 and is used for heat exchange of the first heat exchanger 120. The shell 110 includes a first wall 111 and a second wall 140 arranged oppositely. The fan 130 is arranged on the first wall 111. The second wall 140 includes an exhaust port and a baffle 1401. The baffle 1401 is arranged in the middle region of the second wall 140. An acoustic absorption structure is arranged between the first wall 111 and the second wall 140.

[0120] The air outlet can be arranged on the outer side of the circumferential direction of the baffle 1401. The middle region of the second wall 140 refers to the internal region of the circumferential edge of the second wall 140. Specifically, the middle region of the second wall 140 is the geometric center of the second wall 140 (which can be understood as the position where the central axis of the second wall 140 passes through, which is the central axis perpendicular to the wall surface of the second wall 140) and the surrounding region around the geometric center. The baffle 1401 is arranged in the middle region of the second wall 140, that is, the edges of the baffle 1401 in any direction are located inside the circumferential edge of the second wall 140. The baffle 1401 can be located in part of the middle region of the second wall 140. Any position of the baffle 1401 is arranged inside the circumferential edge region of the second wall 140 (including the baffle 1401 and the air outlet).

[0121] Exemplarily, in an implementation, the baffle 1401 is provided as a solid structure. Wherein, the solid structure refers to a structure that the plate surface is sealed or substantially sealed, and the plate surface of the baffle 1401 refers to the surface of the baffle facing or away from the first wall, that is, the surface of the baffle 1401 facing or away from the first wall 111 can be provided as a sealed solid structure, and the surface of the baffle 1401 facing and away from the first wall 111 is generally two largest surfaces of the baffle 1401 oppositely arranged.

[0122] It should be noted that the definition of the plate surface as a solid structure in the embodiment can be as long as the main body of the plate surface is a sealed and closed structure. Exemplarily, the solid area (the solid area refers to the area of the solid plate surface without through holes) of the plate surface accounts for 85% or more of the entire plate surface area, which can be considered as a solid plate surface. That is, the area of the plate surface provided with through holes accounts for 15% or less of the entire plate surface area, which can be considered as a solid structure.

[0123] Exemplarily, in an implementation, the baffle 1401 accounts for 30% to 50% of the area of the second wall 140, and can be specifically 30%, 35%, 40%, 45%, 50%, etc. Wherein, the area of the second wall 140 only considers the area of the planar region of the second wall 140 parallel to the first wall 111, and the area of the second wall 140 includes the planar area of the region where the air outlet is located and the planar area of the region where the baffle 1401 is located. It should be noted that the baffle 1401 accounts for 30% to 50% of the area of the second wall 140 can be applicable to the case that the fan 130 is provided as an inclined flow fan, that is, the baffle 1401 is arranged in the middle region of the second wall 140.

[0124] Exemplarily, as shown in FIG. 5, FIG. 8, FIG. 10 and FIG. 11, the baffle 1401 is arranged in the middle region of the second wall 140, the fan 130 is arranged as an axial fan, and the length dimension L1 of the baffle 1401 is 70%-90% of the length dimension L2 of the second wall 140 along the length direction Y of the second wall 140, and / or the width dimension W1 of the baffle 1401 is 30%-60% of the width dimension W2 of the second wall 140 along the width direction X of the second wall 140. Wherein, the length dimension L2 of the second wall 140 is greater than the width dimension W2 of the second wall 140, the length dimension L1 of the baffle 1401 is greater than the width dimension W1 of the baffle 1401, the length dimension L1 of the baffle 1401 and the length dimension L2 of the second wall 140 are dimensions in the same direction (both defined as the length direction Y), the width dimension W1 of the baffle 1401 and the width dimension W2 of the second wall 140 are dimensions in the same direction (both defined as the width direction X), the length direction Y corresponding to the length dimension is arranged substantially perpendicular to the width direction X corresponding to the width dimension, and the length direction Y and the width direction X are both perpendicular to the thickness direction Z of the baffle 1401. Wherein, the length dimension L2 of the second wall 140 along the length direction Y is generally not less than the width dimension W2 of the second wall 140 along the width direction X, that is, the direction with larger dimension of the second wall 140 is the length direction, and the direction with smaller dimension is the width direction. In some embodiments, a plurality of fans 130 are arranged on the first wall 111, and the plurality of fans 130 can be arranged at intervals along the length direction Y of the second wall 140.

[0125] The length dimension L2 of the second wall 140 can be understood as the total dimension occupied by the air outlet and the baffle 1401 along the length direction Y, and the width direction W2 of the second wall 140 can be understood as the total dimension occupied by the air outlet and the baffle 1401 along the width direction X. The length dimension L2 of the second wall 140 can be the maximum dimension along the length direction Y, and the width dimension W2 of the second wall 140 can be the maximum dimension along the width direction X.

[0126] It should be noted that the second wall 140 refers to the part of the first part 115 used for cooperating with the first wall 111 and the enclosure 1402 to form the accommodation cavity, that is, the second wall 140 is the wall body directly surrounding the fan 130. Referring to FIG. 4, the second wall 140 is located above the partition plate 117, and the wall body of the second part 116 facing the same direction as the second wall 140 is located below the second wall 140 and the partition plate 117. Wherein, the partition plate 117 is one side of the enclosure 1402.

[0127] It should be noted that the circumferential edge of the baffle 1401 can be provided with a mounting flange 1403 for fixing with the first wall 111. For example, the mounting flange 1403 can be attached to the surrounding plate 1402 by fasteners, and the baffle 1401 is fixed relative to the first wall 111 by being connected to the surrounding plate 1402. Since the mounting flange 1403 is generally used as a connecting structure, it is not used as a surrounding member for directly surrounding the fan 130, and therefore the size of the second wall 140 generally does not include the size of the mounting flange 1403, that is, the length dimension L2 or the width dimension W2 of the second wall 140 refers to the size of the area of the second wall 140 surrounding the fan 130 in the corresponding direction.

[0128] In the case where the baffle 1401 is arranged in the middle region of the second wall 140, as shown in FIGS. 10 and 11, the length dimension L1 of the baffle 1401 can be selected as the maximum dimension in the length direction Y, and the width dimension W1 of the baffle 1401 can be selected as the maximum dimension in the width direction X. In either of the length direction Y or the width direction X, any position of the circumferential edge of the baffle 1401 is arranged inside the circumferential edge of the air outlet of the second wall 140. In the case where a plurality of baffles 1401 are arranged at intervals in a certain direction (length direction Y or width direction X), the size of the baffle 1401 in that direction is equal to the sum of the sizes of all the baffles 1401 in that direction. For example, as shown in FIG. 11, in the case where a plurality of baffles 1401 are arranged at intervals in the length direction Y, the length dimension L1 of the baffle 1401 is equal to the sum of the sizes L3 and L4 of the two baffles 1401 in the length direction Y.

[0129] In the case where the baffle 1401 is arranged in the middle region of the second wall 140 and the fan 130 is arranged as an inclined flow fan, the area and size ratio of the baffle 1401 can limit the noise reduction effect while maintaining a good airflow speed.

[0130] The first heat exchanger 120 can directly exchange heat with the battery device 12 through the first heat exchange circuit 100, and the second heat exchanger 180 in the first heat exchange circuit 100 can be in contact with the battery device. The first heat exchanger 120 can also exchange heat with the second heat exchange circuit 200 through the first heat exchange circuit 100, and the second heat exchange circuit 200 exchanges heat with the battery device 12, thereby achieving heat exchange between the first heat exchanger 120 and the battery device 12. It should be noted that in some other embodiments, the first heat exchanger 120 can also directly exchange heat with the battery device 12, for example, the first heat exchanger 120 exchanges heat with the battery device 12 or the space where the battery device 12 is located.

[0131] The fan 130 exchanges heat with the first heat exchanger 120, which means that the fan 130 can drive the airflow to flow through the first heat exchanger 120, so that the first heat exchanger 120 exchanges heat with the airflow.

[0132] The sound-absorbing structure refers to a structure that can absorb noise and thus reduce noise. It can be a porous sound-absorbing structure, such as sound-absorbing cotton, sound-absorbing board, etc. The sound-absorbing structure can also be a resonant sound-absorbing structure (such as a thin plate resonant structure) and the like.

[0133] The sound-absorbing structure can be arranged on the propagation path of the noise reflected by the baffle 1401, so as to absorb the emitted noise. For example, the side of the baffle 1401 facing the first wall 111 can be provided with a sound-absorbing structure, and the side of the first wall 111 facing the second wall 140 can be provided with a sound-absorbing structure; when the baffle 1402 is arranged between the first wall 111 and the second wall 140, the baffle 1402 can have a sound-absorbing structure.

[0134] In the energy storage device of the embodiment, the baffle 1401 is arranged in the middle region where the noise is relatively large. The noise can be blocked and reflected by the baffle 1401, and the reflected noise is absorbed by the sound-absorbing structure between the first wall 111 and the second wall 140, thereby reducing the noise generated by the heat exchange assembly 101 and improving the operating environment of the heat exchange assembly 101.

[0135] According to some embodiments of the present application, the airflow guiding mechanism (i.e., the fan 130) is arranged to have a smaller air speed in the region corresponding to the baffle 1401 than in the air outlet (i.e., the exhaust area F).

[0136] That is, the air speed of the heat exchange assembly 101 at the baffle 1401 is smaller than the air speed of the heat exchange assembly 101 at the air outlet. The airflow formed by the airflow guiding mechanism (i.e., the fan 130) mainly flows to the exhaust area F (i.e., the air outlet).

[0137] The baffle 1401 can be understood as the position where the baffle 1401 is located, and the air outlet can be understood as the position where the air outlet (i.e., the exhaust area F) is located.

[0138] When comparing the air speed in the region corresponding to the baffle 1401 with the air speed in the region corresponding to the air outlet, the average air speed in each region can be taken, or the maximum air speed in each region can be taken.

[0139] By arranging the baffle 1401 in the region with a smaller air speed, the blocking effect of the baffle 1401 on the airflow can be reduced, the smoothness of the airflow can be improved, and the heat exchange efficiency can be improved.

[0140] According to some embodiments of the present application, optionally, when the fan 130 is a radial fan, the sound insulation member (i.e. the baffle 1401) is arranged at the region of the second wall 140 opposite to the fan 130, that is, the baffle 1401 is arranged opposite to the fan 130 in the thickness direction Z of the first wall 111, wherein the thickness direction Z of the first wall 111 can be understood as the arrangement direction of the fan 130 and the baffle 1401, and can also be understood with reference to the arrangement direction of the first wall 111 and the second wall 140. When the fan 130 is an axial fan, the sound insulation member (i.e. the baffle 1401) is arranged at the region of the second wall 140 surrounding the airflow guide mechanism (understood with reference to the fan 130) and opposite to the first wall 111.

[0141] Optionally, in some embodiments, the fan 130 is arranged at the air outlet 113, the baffle 1401 is an air outlet path E for the fan 130 to drive the airflow to flow outward, the inlet of the fan 130 faces the inside of the shell 110, and the outlet of the fan 130 faces the outside of the shell 110.

[0142] The type of fan 130 is different, and the air outlet path E formed thereby is different. For example, the fan 130 can be a radial fan, the radial fan is arranged at the air outlet 113, and the air outlet path E formed by the radial fan is arranged at an angle with respect to the axial direction of the air outlet 113 (i.e. the axial direction of the radial fan), that is, the airflow flows out obliquely under the action of the radial fan. For another example, the fan 130 can be an axial fan, the axial fan is arranged at the air outlet 113, and the air outlet path E formed by the axial fan extends along the axial direction of the air outlet 113 (i.e. the axial direction of the axial fan), that is, the airflow flows outward along the axial direction of the air outlet 113 under the action of the axial fan.

[0143] In some embodiments, the air exhaust path E is inclined outward relative to the axial direction of the air exhaust port 113, that is, when the fan 130 is a radial fan, the at least partial baffle 1401 is arranged opposite to the air exhaust port 113 along the axial direction of the air exhaust port 113, and the outer side of the circumferential edge of the baffle 1401 forms an air exhaust area F, and the air exhaust path E at least partially passes through the air exhaust area F. For ease of description, the projection of the baffle 1401 to the air exhaust port 113 along the axial direction of the air exhaust port 113 is defined as a first projection. The air exhaust path E being inclined outward relative to the axial direction of the air exhaust port 113 can be understood as follows: after the airflow flows out of the air exhaust port 113 or the fan 130 arranged at the air exhaust port 113, the airflow is inclined to flow in a direction away from the axis of the air exhaust port 113 along the radial direction of the air exhaust port 113, that is, the air exhaust path E is inclined relative to both the radial direction of the air exhaust port 113 and the axial direction of the air exhaust port 113, and the airflow flows outward and diffuses. Alternatively, in the present embodiment, the fan 130 can be a radial fan, and the radial fan is arranged at the air exhaust port 113 to form the inclined air exhaust path E. It should be noted that the at least partial baffle 1401 being arranged opposite to the air exhaust port 113 can be understood as follows: the first projection is at least partially located in the air exhaust port 113, for example, the first projection can be entirely located in the air exhaust port 113, or the first projection can be partially located in the air exhaust port 113 and partially located outside the air exhaust port 113. The air exhaust area F is arranged at the outer side of the circumferential edge of the baffle 1401, which can be understood as follows: the area surrounding the circumferential edge of the baffle 1401 can be used as the air exhaust area F. The air exhaust path E at least partially passing through the air exhaust area F can be understood as follows: at least part of the air exhaust path E extends from the air exhaust port 113 to the air exhaust area F, so that at least part of the airflow can directly pass through the air exhaust area F and flow to the outside.

[0144] For example, the fan 130 is arranged to be a radial fan, and the baffle 1401 is arranged opposite to the fan 130.

[0145] The heat exchange assembly of the present embodiment is suitable for radial outflow, and the position of the baffle 1401 is reasonably arranged, so that the air exhaust path E at least partially passes through the air exhaust area F. In this way, at least part of the airflow discharged through the air exhaust port 113 can be smoothly discharged, the airflow discharge smoothness is improved, the power of the fan 130 can be appropriately reduced, and the heat exchange efficiency of the heat exchange assembly is improved.

[0146] According to some embodiments of the present application, the fan 130 can be a radial fan, and the radial fan includes an impeller 1312. The projection of the baffle 1401 to the impeller 1312 along the axial direction of the air exhaust port 113 is at least partially located in the radial dimension range of the impeller 1312.

[0147] Referring to FIG. 12, the axial flow fan includes an impeller assembly 131, which includes an impeller 1312 and a wheel shaft 1311 disposed in the impeller 1312 and a series of curved blades 1313 connected to the wheel shaft 1311, shaped like a propeller, and the airflow is pushed obliquely by the curved blades 1313, the axial ends of the impeller 1312 are through, the wheel shaft 1311 can be connected with a motor, the motor drives the impeller assembly 131 to rotate, thereby guiding the airflow to flow, the angle of the exhaust path E formed by the impeller 1312 relative to the axial direction of the axial flow fan (which can be understood relative to the axial direction of the impeller 1312) can be 15 degrees, 20 degrees, 25 degrees, 30 degrees, etc. The axial flow fan can be disposed outside the shell 110 and correspond to the air outlet 113. Specifically, referring to FIGS. 5 and 12, the inlet end of the impeller 1312 is provided with a wind guide ring 132, and the wind guide ring 132 has an assembly portion 1322, which can be a flange. The assembly portion 1322 is fixedly connected with the first wall 111, and can be fixedly provided by bolts or screws. The outlet end of the impeller 1312 can also be provided with a protective mesh cover 135, which is provided with mesh holes. The protective mesh cover 135 can prevent sundries or hands of personnel from entering the impeller 1312, improve the reliability of the axial flow fan, and reduce the possibility of danger. The protective mesh cover 135 can be fixed to the assembly portion 1322 by one or more fixing assemblies 133.

[0148] The radial dimension range of the impeller 1312 refers to the range covered by the blades 1313 of the impeller 1312 when rotating. It can be understood that, taking the axis of the wheel shaft of the impeller 1312 as the center and the distance from the blades 1313 of the impeller 1312 to the center as the radius, the range of the circular region formed is the radial dimension range of the impeller 1312.

[0149] As shown in FIGS. 5, 6 and 12, in some implementations, the projection of the baffle 1401 to the impeller 1312 can be partially located in the radial dimension range of the impeller 1312, that is, at least part of the edge of the baffle 1401 is located inside the edge of the impeller 1312, so that the baffle 1401 can better avoid the exhaust path E formed by the impeller 1312. It should be noted that in the present implementation, the part of the baffle 1401 that exceeds the radial dimension range of the impeller 1312 is mainly located between the two fans 130 (i.e. axial flow fans). The area between the two fans 130 is basically not passed by airflow because the air out of the two fans 130 cancels each other out, so the baffle 1401 is arranged at this position and basically does not affect the flow efficiency of the airflow.

[0150] As shown in FIG. 11, the projection of the baffle 1401 to the impeller 1312 is located within the radial dimension of the impeller 1312, that is, the size of the baffle 1401 corresponding to each exhaust port 113 is smaller than the radial dimension of the corresponding impeller 1312, and in the direction perpendicular to the axial direction of the impeller 1312 (for example, the axial direction of the impeller 1312 can be understood with reference to the axial direction of the exhaust port 113 in FIGS. 5-8), the baffle 1401 is located within the radial dimension of the impeller 1312, so that the baffle 1401 can avoid the exhaust path E formed by the mixed flow fan.

[0151] In the heat exchange assembly of the present embodiment, the baffle 1401 is at least partially located within the radial dimension of the impeller 1312, which can make the exhaust path E formed by the mixed flow fan substantially all in the exhaust area F, so that at least part of the airflow discharged through the exhaust port 113 can be discharged more smoothly, improving the discharge smoothness of the airflow, thereby appropriately reducing the power of the fan 130 and improving the heat exchange efficiency of the heat exchange assembly.

[0152] According to some embodiments of the present application, optionally, in some implementations, the fan 130 is an axial outflow fan, and the exhaust path E is consistent with the axial direction of the exhaust port 113. Referring to FIG. 13, which is a schematic view of a second wall according to some embodiments of the present application, along the axial direction of the exhaust port 113, the baffle 1401 is located at a position avoiding the exhaust port 113.

[0153] The sound insulation member (i.e., the baffle 1401) is arranged in the area of the second wall 140 surrounding the airflow guiding mechanism (referring to the fan 130) and opposite to the first wall, that is, the baffle 1401 is located at a position avoiding the exhaust port 113, that is, the first projection of the baffle 1401 to the first wall 111 does not coincide with the exhaust port 113, and the baffle 1401 is located at the periphery of the exhaust port 113.

[0154] Optionally, the fan 130 can be an axial flow fan, which is arranged at the exhaust port 113 to form an exhaust path E consistent with the axial extension direction of the exhaust port 113. The axial flow fan can include an impeller 1312 and a motor, the impeller 1312 is connected to the motor, and the blades 1313 of the impeller 1312 of the axial flow fan can be a series of straight blades 1313, the shape of the blades 1313 is approximately like a cylinder, and the axial flow fan pushes the airflow along the axial direction through the rotation of the blades 1313.

[0155] It can be understood that the heat exchange assembly of the embodiment, the exhaust path E is consistent with the axial direction of the exhaust port 113, the airflow formed by the fan 130 arranged at the exhaust port 113 is exhausted outward along the axial direction of the exhaust port 113, and the baffle 1401 is arranged to avoid the exhaust port 113, so that the exhaust path E formed by the inclined flow fan is substantially entirely in the exhaust area F, and the airflow exhausted through the exhaust port 113 can be smoothly discharged, the airflow discharge smoothness is improved, the power and the operation noise of the fan 130 can be appropriately reduced, and the heat exchange efficiency of the heat exchange assembly is improved.

[0156] According to some embodiments of the present application, when the sound insulation piece (i.e., the baffle 1401) is arranged at the region of the second wall 140 opposite to the airflow guide mechanism (i.e., the fan 130), the exhaust area F (i.e., the air outlet on the second wall 140) is arranged around the sound insulation piece (i.e., the baffle 1401). When the sound insulation piece (i.e., the baffle 1401) is arranged at the region of the second wall 140 around the airflow guide mechanism (i.e., the fan 130) and opposite to the first wall 111, the sound insulation piece (i.e., the baffle 1401) is arranged around the exhaust area F.

[0157] As shown in FIGS. 5, 8, 10 and 11, the exhaust path E is inclined outward relative to the axial direction of the exhaust port 113, that is, when the fan 130 is an inclined flow fan, the exhaust area F is arranged outside the circumferential edge of the baffle 1401, and it can be understood that the region around the circumferential edge of the baffle 1401 can be used as the exhaust area F. For the inclined flow fan, by reasonably arranging the position of the baffle 1401, the exhaust path E at least partially passes through the exhaust area F, so that at least part of the airflow exhausted through the exhaust port 113 can be smoothly discharged, the airflow discharge smoothness is improved, the power of the fan 130 can be appropriately reduced, and the heat exchange efficiency of the heat exchange assembly is improved.

[0158] Alternatively, the fan 130 is an axial flow fan, and the baffle 1401 is arranged around the exhaust port 113 along the circumferential direction of the exhaust port 113. Specifically, in some implementations, as shown in FIG. 13, the exhaust area F is arranged at the position opposite to the exhaust port 113, and the baffle 1401 can be arranged around the exhaust area F. The arrangement of the baffle 1401 in the embodiment can be applicable to the scheme that the exhaust path E is consistent with the axial direction of the exhaust port 113, and the heat exchange assembly of the embodiment can be designed for axial flow, and by arranging the baffle 1401 around the exhaust port 113, the noise stopping range of the baffle 1401 can be improved, and the noise reduction effect of the heat exchange assembly is improved.

[0159] According to some embodiments of the present application, optionally, the sound insulation member (i.e., the baffle 1401) is arranged at a region of the second wall 140 facing the fan 130, and the second wall 140 further comprises a plurality of spaced-apart connecting rods 141, and the baffle 1401 is connected to the shell 110 through the connecting rods 141, and an air exhaust region F is formed between adjacent connecting rods 141. Alternatively, the second wall 140 further comprises a first mesh cover 142, and the baffle 1401 is connected to the shell 110 through the first mesh cover 142, and the first mesh cover 142 is arranged as the air exhaust region F.

[0160] In some embodiments, optionally, as shown in FIG. 5, the second wall 140 further comprises the connecting rods 141, and the baffle 1401 is connected to the shell 110 through the connecting rods 141. Among them, the connecting rods 141 can be connected with the first wall 111 to realize the relative fixation of the connecting rods 141 and the shell 110. Specifically, the connecting rods 141 can be directly connected to the first wall 111, or indirectly connected, for example, as shown in FIG. 5, the connecting rods 141 are connected with the first wall 111 through the surrounding plate 1402. The number of connecting rods 141 can be multiple, and multiple connecting rods 141 can be arranged along the circumference of the baffle 1401, and multiple connecting rods are respectively fixed with the first wall 111. The connecting rods 141 and the shell 110 can be detachably connected, or non-detachably connected. The connecting rods 141 can be arranged in the air exhaust region F, and an air outlet is formed between two adjacent connecting rods 141. The airflow can flow outward through the region (i.e., the air outlet) between the multiple connecting rods 141, and the connecting rods 141 can be made of metal rods to reduce the volume of the connecting rods 141 and reduce the influence of the connecting rods 141 on the airflow discharge. As shown in FIGS. 5 and 6, taking the example that the air exhaust path E is inclined outward relative to the axial direction of the air outlet 113, the air exhaust region F is arranged around the baffle 1401, and multiple connecting rods 141 are arranged along the circumference of the baffle 1401. One end of each connecting rod 141 is connected with the baffle 1401, and the other end of each connecting rod 141 can be fixedly connected with the shell 110 through a bolt. In this embodiment of the heat exchange assembly, the baffle 1401 is connected to the shell 110 through the connecting rods 141, which has a simple structure and a small volume of the connecting rods 141, and has less interference with the airflow flow, thereby reducing the wind resistance and improving the heat exchange efficiency of the heat exchange assembly.

[0161] According to some embodiments of the present application, optionally, the second wall 140 further comprises a first mesh cover 142, the first mesh cover 142 is arranged around the circumference of the baffle 1401, the baffle 1401 is connected with the first mesh cover 142, and is fixedly arranged through the first mesh cover 142, and the mesh holes on the first mesh cover 142 are air outlets.

[0162] Exemplarily, as shown in FIG. 10 and FIG. 11, the second wall 140 further comprises a first mesh cover 142, which is connected with the baffle 1401 and is arranged in the air exhaust path E. The first mesh cover 142 is a cover body provided with mesh holes, and is arranged in the air exhaust area F. The first mesh cover 142 and the sealing plate member can be an integral structure or a split assembly structure. As shown in FIG. 8, FIG. 10 and FIG. 11, the first mesh cover 142 can be a mesh hole plate, which is provided with a plurality of mesh holes arranged in rows and columns. The mesh holes can be circular holes, hexagonal holes or rhombic holes, etc. The mesh holes can form air outlets. As shown in FIG. 10, the first mesh cover 142 can also be an air outlet grille structure. Optionally, when the air exhaust area F surrounds the baffle 1401, as shown in FIG. 8, the first mesh cover 142 can be connected with the shell 110 and the baffle 1401, so that the baffle 1401 is connected with the shell 110 through the first mesh cover 142. Optionally, the first mesh cover 142 can be detachably fixed on the shell 110 by bolts or the like. In the heat exchange assembly of the embodiment, the first mesh cover 142 can allow airflow to pass through, so that the heat exchange assembly can effectively exhaust air. At the same time, the first mesh cover 142 can also play a protective role.

[0163] According to some embodiments of the present application, optionally, the first wall 111 is provided with a plurality of air exhaust openings 113, and each air exhaust opening 113 is provided with a fan 130. The positions opposite to the plurality of fans 130 are provided with sound insulation members (i.e. baffles 1401), and the sound insulation members (i.e. baffles 1401) corresponding to each fan 130 are arranged at intervals or are an integral structure.

[0164] The plurality of refers to two and more than two. When the baffles 1401 corresponding to each air exhaust opening 113 are an integral structure, the baffles 1401 can be an integrally formed structure or an integral structure connected by welding or the like.

[0165] Exemplarily, as shown in FIG. 11, the baffles 1401 can be a plurality of. The plurality of baffles 1401 correspond to and are arranged at intervals with the plurality of fans 130. FIG. 11 takes a diagonal flow fan as an example for illustrative purposes.

[0166] Exemplarily, as shown in FIG. 10, the plurality of fans 130 can correspond to one baffle 1401. FIG. 10 takes a diagonal flow fan as an example for illustrative purposes.

[0167] It should be noted that the plurality of fans 130 corresponding to one baffle 1401 means that at least two fans 130 correspond to one baffle 1401, i.e. the baffles 1401 corresponding to at least two fans 130 are arranged as an integral structure. For example, two fans 130 can correspond to one baffle 1401, and four fans 130 can correspond to two baffles 1401.

[0168] Optionally, the embodiment can be applied to the axial outward inclination of the exhaust path E relative to the exhaust port 113, that is, the fan 130 is a scheme of inclined outflow. In some implementations, as shown in FIGS. 5, 8 and 10, two exhaust ports 113 are arranged on the first wall 111, and each exhaust port 113 is provided with an inclined flow fan. Each exhaust port 113 is correspondingly provided with a baffle 1401, and each baffle 1401 is an integral structure. The outer side of the circumferential edge of the baffle 1401 forms an exhaust area F. Optionally, in another implementation, two exhaust ports 113 are arranged on the first wall 111, and each exhaust port 113 is provided with an inclined flow fan. Each exhaust port 113 is correspondingly provided with a baffle 1401, and each baffle 1401 is arranged in a spaced manner, as shown in FIG. 11.

[0169] Optionally, in the scheme of axial outflow, the sound insulation piece (i.e. the baffle 1401) is arranged in the area of the second wall 140 surrounding the fan 130 and opposite to the first wall 111. The circumferential edge of the sound insulation piece (i.e. the baffle 1401) is connected to the first wall 111, and the middle part of the sound insulation piece (i.e. the baffle 1401) is hollow to form an exhaust area F. Optionally, the first wall is provided with a plurality of exhaust ports, and each exhaust port is provided with a airflow guiding mechanism (for reference to the fan 130). The sound insulation piece (i.e. the baffle 1401) is arranged around the plurality of airflow guiding mechanisms (for reference to the fan 130).

[0170] In one specific implementation, two exhaust ports 113 are arranged on the first wall 111, and each exhaust port 113 is provided with an axial flow fan. The outer side of each exhaust port 113 is provided with a baffle 1401, and each baffle 1401 is an integral structure. As shown in FIG. 13, the exhaust areas F of each exhaust port 113 can be arranged continuously, and the baffle 1401 is arranged around the exhaust area F in a circumferential direction. It can be understood that in the scheme of arranging the baffles 1401 in a spaced manner between the baffles 1401 corresponding to the positions of each exhaust port 113, the baffle 1401 can be adaptively designed or assembled according to each exhaust port 113. The processing and assembly of the baffle 1401 are more flexible. In the case that the baffle 1401 corresponding to the positions of each exhaust port 113 is an integral structure, the assembly of the baffle 1401 and the shell 110 is convenient, and the assembly efficiency is high.

[0171] It should be noted that when the sound insulation piece (i.e. the baffle 1401) is arranged in the area of the second wall 140 surrounding the airflow guiding mechanism (i.e. the fan 130) and opposite to the first wall, the heat exchange assembly can be provided with a mesh cover structure in the exhaust area F.

[0172] According to some embodiments of the present application, the baffle 1401 can be circular or elliptical.

[0173] Exemplarily, as shown in FIG. 11, the baffle 1401 is circular, and each of the plurality of air fans 130 is provided with the baffle 1401. The circular baffle 1401 can be better matched with the air fan 130, and has less disturbance to the airflow, thereby improving the uniformity of the airflow in the circumferential area of the baffle 1401.

[0174] Exemplarily, as shown in FIG. 8 and FIG. 11, the baffle 1401 is elliptical. Specifically, all the baffles 1401 of the plurality of air fans 130 can be connected to form an integral structure, and the baffle 1401 of the integral structure is elliptical. The edge of the elliptical baffle 1401 has less disturbance to the airflow, thereby improving the uniformity of the airflow in the circumferential area of the baffle 1401.

[0175] According to some embodiments of the present application, optionally, the baffle 1401 comprises a porous sound-absorbing structure.

[0176] The baffle 1401 can be partially provided with the porous sound-absorbing structure, or can be entirely provided with the porous sound-absorbing structure. The porous sound-absorbing structure is a component with a surface having a plurality of holes (generally micropores) and capable of reducing noise based on the holes. The porous sound-absorbing structure reduces noise mainly based on three mechanisms of reflection, scattering and absorption. 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 the noise more diverse, thereby reducing the reflection of the noise on the surface of the material. The micropores and protrusions on the surface of the porous sound-absorbing structure can play a scattering role, increase the contact area of the noise and the material, and thereby reduce the reflection and propagation of the noise. The absorption mechanism refers to that when the 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 the noise. The porous sound-absorbing structure can be sound-absorbing cotton, sound-absorbing board, etc., which has low cost and good noise reduction effect.

[0177] According to some embodiments of the present application, optionally, as shown in FIG. 14, which is a cross-sectional schematic view of the heat exchange assembly according to some embodiments of the present application, the heat exchange assembly further comprises a first sound-absorbing structure 143, and the first sound-absorbing structure 143 is arranged on the baffle 1401.

[0178] The sound-absorbing structure arranged on the baffle 1401 is the first sound-absorbing structure 143. The first sound-absorbing structure 143 can be mounted on the side of the baffle 1401 facing the air outlet 113, or can be mounted on the side of the baffle 1401 away from the air outlet 113, or can be filled with the first sound-absorbing structure 143 inside the baffle 1401.

[0179] The heat exchange assembly of the embodiment can absorb part of the noise propagating outward through the air outlet 113, so that the noise of the heat exchange assembly is reduced.

[0180] According to some embodiments of the present application, optionally, the first sound-absorbing structure 143 comprises a porous sound-absorbing structure; and / or, the first sound-absorbing structure 143 is arranged on the side of the baffle 1401 facing the air outlet 113.

[0181] The porous sound-absorbing structure is a component with a surface having a plurality of holes (generally micropores) and can reduce noise based on these holes. The reduction of noise by the porous sound-absorbing structure is mainly based on three mechanisms of reflection, scattering and absorption of noise. Among them, the reflection mechanism refers to when noise encounters the surface of the porous sound-absorbing structure, part of the energy will be reflected back, and the surface with high reflectivity can effectively reduce the penetration of sound. The scattering mechanism refers to the irregular shape of the surface of the porous sound-absorbing structure can make the propagation direction of the noise more diverse, thereby reducing the reflection of the noise on the surface of the material. The small holes and protrusions on the surface of the porous sound-absorbing structure can play a scattering role, increase the contact area of the noise and the material, and thus reduce the reflection and propagation of the noise. The absorption mechanism refers to when the 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 the noise. The porous sound-absorbing structure can be sound-absorbing cotton, sound-absorbing board, etc., which has low cost and good noise reduction effect.

[0182] Optionally, the side of the baffle 1401 facing the air outlet 113 can be pasted with the first sound-absorbing structure 143. The first sound-absorbing structure 143 can be a porous sound-absorbing structure, and the first sound-absorbing structure 143 is arranged on the side of the baffle 1401 facing the air outlet 113. Not only can it absorb part of the noise propagating outward, but also the noise reflected by the baffle 1401 can be absorbed by the first sound-absorbing structure 143, so that the noise of the heat exchange assembly is reduced.

[0183] Optionally, as shown in FIG. 14, the heat exchange assembly further comprises a second sound-absorbing structure 144, the wall of the shell 110 provided with the air outlet 113 is a first wall 111, and the wall surface of the first wall 111 facing the baffle 1401 is provided with the second sound-absorbing structure 144 (i.e. the sound-absorbing structure arranged on the first wall 111 is defined as the second sound-absorbing structure 144). The second sound-absorbing structure 144 refers to a structure that can absorb noise and thus reduce noise, which can be a porous sound-absorbing structure, such as sound-absorbing cotton, sound-absorbing board, etc., and the second sound-absorbing structure 144 can also be a resonant sound-absorbing structure, etc. The wall surface of the first wall 111 facing the baffle 1401 is the outer wall surface of the first wall 111, and the second sound-absorbing structure 144 can be arranged thereon.

[0184] When the noise is transmitted outward through the air outlet 113, the second sound absorption structure 144 can absorb part of the noise transmitted outward, and the noise emitted by the baffle 1401 can be transmitted to the second sound absorption structure 144 and be absorbed again, so that the noise of the heat exchange assembly is reduced.

[0185] According to some embodiments of the present application, optionally, the baffle 1401 comprises a metal sealing plate.

[0186] The sound insulation of the baffle 1401 has a mass law, that is, the heavier the mass of the material of the baffle 1401 (or the greater the surface density or unit volume density), the better the sound insulation effect. Theoretically, the sound insulation volume can be increased by about six decibels for each doubling of the surface density. Therefore, the greater the density of the baffle 1401, the better. Based on the comprehensive consideration of cost and noise reduction effect, the metal sealing plate can be used as the baffle 1401 in the present embodiment. The metal sealing plate refers to a plate body processed from a metal material, which can be a metal composite plate, an alloy plate, etc. Specifically, it can be a steel plate. The steel plate has high hardness, large density and low cost. Using the steel plate as the baffle 1401 can reduce the cost of the heat exchange device and has a good noise reduction effect. The baffle 1401 can only consist of the metal sealing plate, or a plate body of another material can be arranged on the basis of the metal sealing plate, for example, sound-absorbing cotton can be arranged on the metal sealing plate.

[0187] According to some embodiments of the present application, optionally, as shown in FIG. 10, the air exhaust area F is provided as an air outlet grille structure.

[0188] The air outlet grille structure can be a structure with gaps formed by parallel or staggered grid bars 146. Optionally, the first mesh cover 142 can be provided as the air outlet grille structure.

[0189] For example, the air outlet grille structure is circumferentially arranged around the baffle 1401, the baffle 1401 is connected with the air outlet grille structure and is fixedly arranged through the air outlet grille structure, and the grid holes on the air outlet grille structure are provided as air outlets (air outlets of the second wall 140).

[0190] It should be noted that the air outlet grille structure can also be used in combination with the first mesh cover 142 or the connecting rod 141. When the first mesh cover 142 is arranged at the air outlet (i.e., the air exhaust area F), the air outlet grille structure can be installed in the mesh holes of the first mesh cover 142; when the connecting rod 141 is arranged at the air outlet (i.e., the air exhaust area F), the air outlet grille structure can be arranged between two adjacent connecting rods 141.

[0191] The air outlet grille structure can have a good rainproof effect, can make the airflow flow out more smoothly, and can reduce the possibility of rainwater flowing into the heat exchange assembly. In some implementations, the air outlet grille can include a plurality of parallel grid bars 146 arranged in the horizontal direction, and a gap for airflow is formed between adjacent grid bars 146. In the downward direction, each grid bar 146 is inclined outward. When rainwater passes through the air outlet grille structure, the rainwater can be discharged outward along the grille, thereby reducing the possibility of rainwater flowing into the heat exchange assembly.

[0192] According to some embodiments of the present application, as shown in FIGS. 5-8, the second wall 140 further includes a surrounding plate 1402 connected to the first wall 111. The surrounding plate 1402 is connected to the first wall 111 and is arranged around the air outlet 113 and the fan 130. The baffle 1401 is connected to the surrounding plate 1402.

[0193] The wall of the shell 110 where the air outlet 113 is arranged is the first wall 111. The first wall 111 is connected to the circumferential edge of the side facing the baffle 1401. The baffle 1401 is arranged on the inner side of the surrounding plate 1402 and is connected to the surrounding plate 1402.

[0194] The surrounding plate 1402 can be arranged around the circumferential edge of the first wall 111. The baffle 1401 can be connected to the surrounding plate 1402 through the first mesh cover 142 or the connecting rod 141. Optionally, the fan 130 can be arranged on the wall surface of the first wall 111 facing the baffle 1401 (the outer wall surface of the first wall 111) and located in the space formed by the surrounding plate 1402.

[0195] The surrounding plate 1402 of the present embodiment can reflect noise, thereby improving the noise reduction effect of the second wall 140.

[0196] According to some embodiments of the present application, the surrounding plate 1402 is provided with a third sound-absorbing structure 145, i.e., the sound-absorbing structure arranged on the surrounding plate 1402 is defined as the third sound-absorbing structure 145.

[0197] The surrounding plate 1402 can be directly provided as the third sound-absorbing structure 145. Alternatively, the third sound-absorbing structure 145 can be additionally arranged on the surrounding plate 1402. The third sound-absorbing structure 145 can be arranged on the side of the surrounding plate 1402 facing the fan 130, i.e., on the inner side of the surrounding plate 1402.

[0198] The third sound-absorbing structure 145 refers to a structure that can absorb noise and thereby reduce noise. It can be a porous sound-absorbing structure, such as sound-absorbing cotton, sound-absorbing board, etc. The third sound-absorbing structure 145 can also be a resonant sound-absorbing structure, etc.

[0199] When the noise is transmitted outward through the air outlet 113, the third sound-absorbing structure 145 can absorb part of the noise transmitted outward, and the noise emitted by the baffle 1401 can be transmitted to the third sound-absorbing structure 145 and be absorbed again, so that the noise of the heat exchange assembly is reduced.

[0200] In some embodiments, the surrounding plate 1402 is provided in a closed structure. The surrounding plate 1402 in a closed structure means that the surrounding plate 1402 is connected at the end to be closed, and the surrounding plate 1402 can be a plate body that is completely closed or provided with a small number of through holes. The surrounding plate 1402 can be a solid sealing structure, or a hollow plate body with a sealed hollow surface. The inner side of the surrounding plate 1402 can be additionally provided with the third sound-absorbing structure 145.

[0201] It can be understood that the surrounding plate 1402 provided in a closed structure can better block the noise from the side, reflect the noise, and reduce the noise by absorbing the noise by the sound-absorbing structure.

[0202] In an optional embodiment, the heat exchange assembly 101 is arranged in the bin body 11, and the surrounding plate 1402 is provided in a closed structure.

[0203] It can be understood that when the heat exchange assembly 101 is arranged in the bin body 11, the surrounding plate 1402 is provided in a closed structure, which can improve the possibility of noise being blocked by the surrounding plate 1402 in the vicinity of the surrounding plate 1402, reduce the possibility of noise spreading to other areas of the bin body 11, and improve the operation effect of the energy storage device. According to some embodiments of the present application, optionally, a gap is provided between the fan 130 and the baffle 1401 along the arrangement direction of the first wall 111 to the baffle 1401.

[0204] The gap is provided between the baffle 1401 and the fan 130, so that a distance is reserved between the air outlet of the fan 130 and the baffle 1401, a ventilation transition section is formed, air resistance is reduced, and the guiding effect of the fan 130 on the airflow is improved.

[0205] According to some embodiments of the present application, as shown in FIG. 5, FIG. 6, FIG. 12, and in combination with FIG. 15 to FIG. 20, FIG. 15 is a structural schematic diagram of another view of the fan according to some embodiments of the present application, FIG. 16 is a sectional view of the fan according to some embodiments of the present application, FIG. 17 is an assembly sectional view of the air guide ring and the impeller assembly according to some embodiments of the present application, FIG. 18 is a structural schematic diagram of one view of the impeller assembly according to some embodiments of the present application, FIG. 19 is a structural schematic diagram of another view of the impeller assembly according to some embodiments of the present application, and FIG. 20 is a sectional view of the impeller assembly according to some embodiments of the present application. The fan 130 includes an air guide ring 132 and an impeller assembly 131, and the air guide ring 132 is installed on the first wall 111. The impeller assembly 131 includes an impeller 1312 and a blade 1313. The impeller 1312 is in a cylindrical shape and surrounds the outside of the blade 1313 and is fixedly connected with the blade 1313. The two ends of the air guide ring 132 in the axial direction are an air ring air inlet end 1325 and an air ring air outlet end 1326, respectively. The two ends of the impeller 1312 in the axial direction are an impeller air inlet end 1316 and an impeller air outlet end 1317, respectively. Along the axial direction of the impeller 1312, the air ring air outlet end 1326 is arranged inside the impeller air 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 able to rotate relative to the air guide ring 132. The impeller 1312 is provided with a blocking part 136, which is arranged to protrude from the outer peripheral wall of the impeller 1312.

[0206] When the air outlet 113 is the air inlet of the shell 110, the fan 130 according to the present embodiment can be installed on the inner wall surface of the first wall 111. As shown in FIG. 5 and FIG. 6, when the air outlet 113 is the air outlet of the shell 110, the fan 130 according to the present embodiment can be installed on the outer wall surface of the first wall 111. The air guide inlet end of the air guide ring 132 is used to connect with the first wall 111 to fix the fan 130 to the external fixing member.

[0207] The air guide ring 132 can guide the airflow. The air guide ring 132 can be connected with the first wall 111 to fix the fan 130 to the external fixing member. The air guide ring 132 is a substantially cylindrical structure. A channel for airflow is formed inside the air guide ring 132. Specifically, the air guide ring 132 can be a cylindrical structure with a substantially circular or elliptical cross section. The air guide ring 132 can also be a cylindrical structure with a polygonal or irregular cross section. The two ends of the air guide ring 132 in the axial direction are throughly arranged, and the two ends of the air guide ring 132 in the axial direction are an air ring air inlet end 1325 and an air ring air outlet end 1326, respectively. The airflow can flow from the air inlet end 1325 to the air outlet end 1326 along the inside of the air guide ring 132.

[0208] The impeller assembly 131 guides the airflow to flow by rotation, and the flow direction of the airflow can be understood with reference to the arrow C. The impeller 1312 is cylindrically arranged, that is, the impeller 1312 is at least partially substantially cylindrical, for example, the impeller 1312 can be a substantially circular cylindrical structure as a whole. Of course, the impeller 1312 can also be processed into other shapes of cylindrical structure according to needs, and the side wall of the impeller 1312 can be closed to reduce the possibility of the airflow leaking from the side wall of the impeller 1312 and easily flowing back to the impeller air inlet end 1316. The two axial ends of the impeller 1312 are throughly arranged, the flow channel for the airflow to flow is formed in the impeller 1312, and the two axial ends of the impeller 1312 are the impeller air inlet end 1316 and the impeller air outlet end 1317, respectively. The airflow 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 sheet or plate structures, and the blades 1313 can be arranged in one or more pieces. The blades 1313 can be arranged in the air guide ring 132 and fixedly connected to the inner circumferential wall of the air guide ring 132.

[0209] It can be understood that the flow direction of the airflow 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. Alternatively, the axial direction of the air guide ring 132 and the axial direction of the impeller 1312 can be substantially coaxially arranged. 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 airflow flowing 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 airflow flowing in the impeller 1312.

[0210] As shown in FIGS. 16 and 17, the air guide ring air outlet end 1326 is arranged inside the impeller air inlet end 1316, so that the air guide ring air outlet end 1326 is in communication with the impeller air inlet end 1316. The air guide ring air outlet end 1326 is arranged inside the impeller air inlet end 1316, that is, the impeller air inlet end 1316 is arranged outside the air guide ring 132, and the connection between the air guide ring air outlet end 1326 and the impeller air inlet end 1316 forms a stepped surface. The stepped surface (that is, the end surface of the air guide ring air outlet end 1326) in the airflow flow path is oriented in the same direction as the airflow flow direction, and the airflow flowing from the air guide ring air outlet end 1326 to the impeller 1312 is not easily interfered by the stop.

[0211] In the radial direction of the air guide ring 132, the air guide 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 of the air guide ring 132 with the impeller 1312 specifically refers to the clearance fit of the air guide ring outflow end 1326 with the impeller inflow end 1316 in the radial direction of the air guide ring outflow end 1326 (also in the radial direction of the impeller inflow end 1316), that is, the sleeve part of the impeller 1312 and the air guide ring 132 is in clearance fit, so that the impeller 1312 can rotate around its own axis.

[0212] The outer peripheral wall of the impeller 1312 refers to the wall surface of the peripheral wall of the impeller 1312 facing outward, which forms two opposite sides of the peripheral wall of the impeller 1312 with the inner peripheral wall of the impeller 1312. The blocking part 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 part 136 is arranged relatively outward along the radial direction of the impeller 1312 relative to the outer peripheral wall (the outer peripheral wall of the impeller 1312). The blocking part 136 can be arranged in one circle or only a part along the circumferential direction, for example, half a circle, 1 / 4 circle, etc. The blocking part 136 can be an integral structure with the impeller 1312, or can be an integral structure connected by welding or other methods. Of course, the blocking part 136 can also be fixedly connected to the impeller 1312 in other ways.

[0213] Optionally, in some embodiments, a plurality of blocking parts 136 are arranged along the axial direction of the impeller 1312. In adjacent two blocking parts 136, the protruding height of the blocking part 136 close to the impeller inflow end 1316 is less than the protruding height of the blocking part 136 close to the impeller inflow end 1316. In this embodiment, the closer to the impeller inflow end 1316, the higher the protruding height of the blocking part 136, which can further stop the airflow flowing back from the impeller outflow end 1317.

[0214] Optionally, the fan 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. 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.

[0215] Optionally, the fan 130 can further comprise a fixing assembly 133 for connecting the impeller assembly 131 and the air guide ring 132. The fixing assembly 133 can fix the impeller assembly 131 to the air guide ring 132 while retaining the freedom of the impeller assembly 131 to rotate around its own axis. Thus, the assembly of the fan 130 can be completed by connecting the air guide ring 132 with the external fixing member.

[0216] The fan 130 in this embodiment, when the fan 130 is running, the impeller assembly 131 rotates, and the air flow is pressed from the air guide ring 132 to the air outlet (i.e., the impeller air outlet end 1317) of the impeller assembly 131. The air ring outlet end 1326 of the air guide ring 132 is inserted into the impeller air inlet end 1316 of the impeller 1312, so that the stepped surface formed by the air guide ring 132 and the impeller 1312 can avoid the flow path of the air flow, improve the smoothness of the air flow, and reduce the possibility that the air flow will be disturbed by the stepped surface and generate turbulence and increase noise during the process of flowing from the air guide ring 132 to the impeller 1312. At the same time, the blocking part 136 can block the air flow that flows in the opposite direction along the outside of the impeller 1312, thereby reducing the possibility that the air flow (the air flow flowing out of the air outlet of the impeller 1312) will flow in the opposite direction, pass through the gap between the air guide ring 132 and the impeller 1312, and then enter the impeller 1312 again, thereby causing the air flow in the impeller 1312 to separate and become turbulent, further reducing the noise of the air flow, and reducing the overall operating noise of the fan 130 and the heat exchange assembly 101 using the fan 130.

[0217] According to some embodiments of the present application, the impeller air inlet end 1316 is provided with a blocking part 136.

[0218] The impeller air inlet end 1316 includes the circumferential wall of the impeller 1312 close to the end surface of the air inlet end and the end surface of the air inlet end. That is, the blocking part 136 can be provided on at least one of the circumferential wall or the end surface 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 part 136. Specifically, the blocking part 136 can be a structure formed by outwardly folding the end surface of the impeller air inlet end 1316.

[0219] The fan 130 in this embodiment, by providing the blocking part 136 on the impeller air inlet end 1316, the blocking part 136 can directly block and interfere with the air flow that flows back to the impeller air inlet end 1316, thereby reducing the air flow that flows back to the impeller assembly 131 from the impeller air outlet end 1317 through the impeller air inlet end 1316, and reducing the operating noise of the fan 130.

[0220] According to some embodiments of the present application, the blocking part 136 and the impeller 1312 are an integral structure, as shown in FIGS. 16 and 17.

[0221] The blocking part 136 can be an integral structure formed by casting / injection molding, etc., with the impeller 1312. The blocking part 136 can also be an integral structure connected by welding, etc. Optionally, the blocking part 136 can be a structure formed by the outer circumferential wall of the impeller 1312 protruding outward, or a flange structure formed by the end of the impeller 1312 folding outward.

[0222] 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.

[0223] According to some embodiments of the present application, as shown in FIGS. 16-20, the blocking part 136 is arranged in a closed loop around the outer peripheral wall (the outer peripheral wall of the impeller 1312) in the circumferential direction of the impeller 1312.

[0224] That is, the blocking part 136 is arranged in one loop on the outer peripheral part in the circumferential direction of the impeller 1312. It should be noted that when the blocking part 136 is arranged in multiple loops in the axial direction of the impeller 1312, one of the blocking parts 136 can be arranged in one loop, and the other blocking parts 136 can be arranged in one loop or arranged locally in the circumferential direction.

[0225] Optionally, the blocking part 136 can be attached to or integrated with the outer peripheral wall of the impeller 1312 at any position in 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.

[0226] In the fan 130 of the present embodiment, the blocking part 136 can block the airflow at any position in the circumferential direction of the impeller 1312, thereby reducing the possibility of the airflow discharged from the air outlet end 1317 of the impeller flowing back to the impeller assembly 131 through the air inlet end 1316, and reducing the operating noise of the fan 130.

[0227] According to some embodiments of the present application, as shown in FIGS. 16-20, 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).

[0228] Optionally, in one implementation, as shown in FIGS. 16-20, 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.

[0229] Optionally, in another implementation, the first stop segment 1361 is arranged closer to the impeller air outlet end 1317 at the end away from the outer circumferential wall (the outer circumferential wall of the impeller 1312) than at the end connected to the outer circumferential wall (the outer circumferential wall of the impeller 1312). Optionally, the first stop segment 1361 can gradually change, i.e., the first stop segment 1361 can be arranged to gradually approach the impeller air outlet end 1317 from the end connected to the outer circumferential wall (the outer circumferential wall of the impeller 1312) to the end away from the outer circumferential wall (the outer circumferential wall of the impeller 1312). Specifically, as shown in FIG. 21, which is a partial cross-sectional schematic view of the 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 connected to the outer circumferential wall (the outer circumferential wall of the impeller 1312) to the end away from the outer circumferential wall (the outer circumferential wall of the impeller 1312), i.e., the protruding direction of the first stop segment 1361 is 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 arcuately curved toward the side where the impeller air outlet end 1317 is located from the end connected to the outer circumferential wall (the outer circumferential wall of the impeller 1312) to the end away from the outer circumferential wall (the outer circumferential wall of the impeller 1312).

[0230] In the fan 130 according to the present embodiment, the first stop segment 1361 is substantially perpendicular to the outer circumferential wall (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 from the impeller air outlet end 1317 is less than or equal to 90 degrees, and the first stop segment 1361 can have a better stop effect on the backflow airflow, 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 operation noise of the fan 130.

[0231] According to some embodiments of the present application, the blocking portion 136 includes the first stop segment 1361, which is arranged to be folded radially outward from the outer circumferential wall of the impeller 1312.

[0232] As shown in FIGS. 16 to 20, the first stop segment 1361 can be folded radially outward from the outer circumferential wall of the impeller air inlet end 1316. Optionally, the first stop segment 1361 can also be folded radially outward from the outer circumferential wall of the impeller air outlet end 1317.

[0233] 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 fan 130.

[0234] According to some embodiments of the present application, as shown in FIG. 22, the blocking part 136 further includes 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. 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 spaced apart from the outer peripheral wall (the outer peripheral wall of the impeller 1312).

[0235] Wherein, along the radial direction of the impeller 1312, the first stop section 1361 can be a straight section, or a curved or folded section. Along the radial direction of the impeller 1312, the second stop section 1362 can be a straight section, or a curved or folded 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 section.

[0236] 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.

[0237] The first stop section 1361 is located on the side close to the impeller air outlet end 1317, which means that 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), which means that there is a gap between the second stop section 1362 and the outer peripheral wall (the outer peripheral wall of the impeller 1312) for the airflow to enter, and specifically, as shown in FIG. 22, 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 away from the first stop section 1361 to the end connected with 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).

[0238] 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 with 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).

[0239] 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 with 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).

[0240] In some implementations, as shown in FIG. 22, the second stop section 1362 is bent at a substantially right angle with the first stop section 1361, that is, the second stop section 1362 is substantially perpendicular to the first stop section 1361.

[0241] The fan 130 of the present embodiment, the second stop section 1362 is located on the side close to the impeller air outlet end 1317 of the first stop section 1361, 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 of the airflow flowing back 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 operation noise of the fan 130 is reduced.

[0242] According to some embodiments of the present application, as shown in FIG. 22, 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.

[0243] 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 current at the connection between the second stop segment 1362 and the first stop segment 1361, further reduces the possibility of backflow of air current 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 fan 130.

[0244] According to some embodiments of the present application, as shown in FIG. 16 and FIG. 17, 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.

[0245] 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 current. Along the flow direction of the air current, the air guide ring 132 can be at least partially tapered, so that the flow area of the air current gradually decreases, thereby improving the air guiding effect on the air current.

[0246] 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 to and communicates with the air inlet end of the second air guide segment 1324. The second air guide segment 1324 is a straight cylinder segment, which is inserted into the impeller air inlet end 1316.

[0247] The flow passage cross section can be understood as the cross section of the region through which the air current flows in the air current channel. Specifically, the flow passage cross section of the first air guide segment 1323 is the cross section of the air current channel formed by the first air guide segment 1323 along the axial direction of the first air guide segment 1323. The flow passage cross section of the second air guide segment 1324 is the cross section of the air current channel formed by the second air guide segment 1324 along the axial direction of the second air guide segment 1324.

[0248] The direction from the air inlet end 1325 of the air ring to the air outlet end 1326 of the air ring 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.

[0249] The air outlet end of the second air guide section 1324 is arranged to be 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 terms of 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.

[0250] The second air guide section 1324 is a straight cylinder section, which can be understood as that the shape and area of the flow passage 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 is used to be inserted and matched with the impeller air inlet end 1316, which can improve the matching 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 rate of the airflow (the airflow flowing out of the exhaust port 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 match the second air guide section 1324.

[0251] The structure of the air ring 132 of the fan 130 in the embodiment can not only better guide the airflow, but also reduce the flow rate of the airflow (the airflow flowing out of the exhaust port 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.

[0252] According to some embodiments of the present application, as shown in FIGS. 16-22, 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.

[0253] 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 fan 130 to the airflow.

[0254] According to some embodiments of the present application, as shown in FIGS. 16-22, 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.

[0255] 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.

[0256] According to some embodiments of the present application, as shown in FIG. 23, the air guide ring 132 further comprises an assembling portion 1322, the outer wall surface of the air ring air inlet end 1325 is connected with the assembling portion 1322, the assembling portion 1322 extends outward along the radial direction of the impeller 1312, and the assembling portion 1322 is used to connect with an external fixing member.

[0257] 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 assembling portion 1322, the two ends of the cover portion 1321 along the axial direction of the air guide ring 132 are respectively the air ring air inlet end 1325 and the air ring air outlet end 1326, the outer wall surface of the air ring air inlet end 1325 of the cover portion 1321 is connected with the assembling portion 1322, the assembling portion 1322 is used to connect with an external fixing member; the fan 130 further comprises a fixing assembly 133, and the impeller assembly 131 is installed on the assembling portion 1322 through the fixing assembly 133.

[0258] The assembling portion 1322 is fixedly connected with the cover portion 1321, and the two can be an integrated structure. Alternatively, the assembling portion 1322 can be a structure formed by outwardly folding the air ring air inlet end 1325 of the cover portion 1321. Alternatively, the assembling portion 1322 can be a flange structure, and the assembling portion 1322 can be detachably connected with an external fixing member through a bolt or the like.

[0259] The fan 130 of the present embodiment can more conveniently fix the air guide ring 132 to an external fixing member by arranging the assembling portion 1322.

[0260] According to some embodiments of the present application, as shown in FIG. 23, the fan 130 further comprises a fixing assembly 133, and the impeller assembly 131 is mounted on 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 on the mounting 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 on 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 on the assembling portion 1322 through the fixing assembly 133.

[0261] In the fan 130 of the present embodiment, the air guide ring 132 is arranged on the assembling portion 1322, and the impeller assembly 131 is mounted on 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 fan 130 can be fixed on the external fixing member, and the operation is convenient.

[0262] According to some embodiments of the present application, as shown in FIG. 23, the fan 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 with the wheel shaft 1311, and the driving member 134 is connected with one end of the wheel shaft 1311 away from the air guide ring 132 along the axial direction of the impeller 1312.

[0263] The blades 1313 and the wheel shaft 1311 can be arranged at intervals along the axial direction of the impeller 1312, 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.

[0264] Optionally, the blades 1313 are arranged in a plurality of blades 1313, and the plurality of blades 1313 are connected on the wheel shaft 1311 at intervals along the circumferential direction of the wheel shaft 1311. The blades 1313, the wheel shaft 1311 and the impeller 1312 can be an integrated structure.

[0265] 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.

[0266] 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 assembling 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 fan 130 further includes the driving member 134, and the impeller assembly 131 further includes the wheel shaft 1311 arranged in the impeller 1312, and the blades 1313 are connected with the wheel shaft 1311 and are spaced apart from the air guide ring 132 along the axial direction of the impeller 1312. 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 to the assembling portion 1322.

[0267] 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 assembling 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.

[0268] The fan 130 of the embodiment, the driving member 134, the impeller assembly 131 and the air guide ring 132 can be integrated, which facilitates the assembly of the fan 130 and the external fixing member, and the impeller assembly 131 and the driving member 134 are connected and fixed with the assembling portion 1322 through the same fixing assembly 133, which is simple in structure and convenient to disassemble and assemble.

[0269] 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.

[0270] In one 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.

[0271] As shown in FIGS. 16-22, the wheel shaft 1311 is internally hollow to form a mounting cavity 1314, which is open at an end away from the air guide ring 132 and sealed at an end close to the air guide ring 132. The motor body is inserted into the mounting cavity 1314 and fits with the mounting cavity 1314 in a clearance fit, so that the impeller assembly 131 can rotate relative to the motor body. 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.

[0272] The transmission part 1315 and the drive 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, and the drive output end 1343 is provided in a polygonal structure. The drive output end 1343 is inserted into the polygonal hole, so that the drive output end 1343 is fixed relative to the transmission part 1315 in the circumferential direction. The drive 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), and the drive output end 1343 passes through the polygonal hole and is screwed with a nut assembly 1344 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 drive output end 1343 relative to the transmission part 1315 in the axial direction, so as to achieve the fixed connection of the drive output end 1343 and the wheel shaft 1311.

[0273] It should be noted that, in the axial direction of the impeller assembly 131, the body of the drive member 134 can be entirely located in the mounting cavity 1314 or partially protrude from the mounting cavity 1314.

[0274] In this embodiment, the fan 130, the drive member 134 is at least partially built-in in the mounting cavity 1314, so that the fan 130 has a smaller volume and saves costs. Moreover, the drive member 134 is substantially built-in in the mounting cavity 1314, which can reduce the damage of rainwater and the like to the drive member 134 and improve the reliability of the drive member 134.

[0275] According to some embodiments of the present application, the fan 130 further includes a protective mesh cover 135, which covers the impeller assembly 131 on the radial outer side of the impeller 1312, as shown in FIGS. 12, 15-16 and 23.

[0276] The protective mesh cover 135 is a cover structure with mesh holes. 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 drive member 134 can be entirely or partially located in the protective mesh cover 135.

[0277] The protective mesh cover 135 can meet the air outlet demand of the fan 130, reduce the entry of foreign matters into the fan 130, improve the reliability of the fan 130, and reduce the risk of the operator being injured by the fan 130.

[0278] 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.

[0279] 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.

[0280] Optionally, the driving member 134 can have a small portion exposed outside the protective mesh cover 135, which can be connected to the 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.

[0281] The embodiment has simple structure and high assembly stability, and when the impeller assembly 131 needs to be maintained, the protective mesh cover 135, the driving member 134 and the impeller assembly 131 can be disassembled by disassembling the fixing assembly 133, which is convenient to operate.

[0282] According to some embodiments of the present application, as shown in FIGS. 12, 16, 17 and 23, along the axial direction of the air guide ring 132, the cover body portion 1321 includes a protruding portion 1329 protruding from the assembly portion 1322, the protruding portion 1329 is configured to be inserted into the air outlet 113 of the first wall, and the protruding portion 1329 is configured as the air guide ring air inlet end 1325.

[0283] Along the axial direction of the air guide ring 132, the protruding portion 1329 protrudes towards the side of the cover body portion 1321 away from the impeller assembly 131. As the air guide ring air inlet end 1325, the protruding portion 1329 can be understood as a protruding portion 1329 surrounding the air inlet of the air flow channel of the air guide ring 132, and the inner wall surface of the protruding portion 1329 (the inner circumferential surface of the protruding portion 1329 facing the air flow channel) is aligned and connected with the inner wall surface of the main body portion of the cover body portion 1321. Along the flow direction of the air flow, the inner wall surface of the protruding portion 1329 can be tapered to improve the guiding effect of the air flow and reduce noise.

[0284] Referring to FIGS. 5 and 6, when the fan 130 is assembled with the first wall 111, the assembly portion 1322 can be attached to the first wall 111, the impeller assembly 131 is located on the side of the assembly portion 1322 away from the external fixing member, and the protruding portion 1329 can be inserted into the air outlet 113, so that the air flow can flow more smoothly to the fan 130, reducing the air flow pressure loss and improving the guiding efficiency of the fan 130 to the air flow.

[0285] As shown in FIGS. 3-7, the present embodiment provides a heat exchange assembly, which comprises a shell 110, a first heat exchanger 120 and an inclined flow fan, the first heat exchanger 120 is arranged in the shell 110, the shell 110 has an air inlet 112 and an air outlet 113, wherein the air outlet 113 is arranged on the first wall 111, and the first heat exchanger 120 is used for heat exchange with external airflow. The inclined flow fan is arranged at the air outlet 113, and the inclined flow fan is arranged on the outer wall surface of the first wall 111, and the path driven by the inclined flow fan for the airflow to flow outward forms an air outlet path E. At least part of the baffle 1401 is arranged opposite to the air outlet 113, and the outer side of the circumferential edge of the baffle 1401 is provided with an air outlet area F, and the air outlet path E passes through the air outlet area F. Two air outlets 113 are arranged on the first wall 111, and the two air outlets 113 are respectively provided with inclined flow fans, and the two air outlets 113 are respectively provided with baffles 1401 on the side away from the first wall 111, the baffles 1401 at the corresponding positions of the two air outlets 113 are an integral structure, the inclined flow fan comprises an impeller 1312, along the axial direction of the air outlet 113, a part of the projection of the baffle 1401 to the impeller 1312 is located within the radial dimension range of the impeller 1312. The heat exchange assembly further comprises a first sound absorption structure 143, the first sound absorption structure 143 comprises a porous sound absorption structure, and the first sound absorption structure 143 is arranged on the side of the baffle 1401 facing the air outlet 113. The heat exchange assembly further comprises a second sound absorption structure 144, and the wall surface of the first wall 111 facing the baffle 1401 is provided with the second sound absorption structure 144. The wall of the shell 110 provided with the air outlet 113 is the first wall 111, and the circumferential edge of the side of the first wall 111 facing the baffle 1401 is connected with a surrounding plate 1402, the baffle 1401 is connected to the surrounding plate 1402 through a connecting rod 141, and the surrounding plate 1402 is provided with a third sound absorption structure 145. The baffle 1401 is a steel plate. The baffle 1401 can be provided with an indicator light 400. The circumferential edge of the baffle 1401 can be provided with a reinforcing portion to improve the strength of the baffle 1401, and the reinforcing portion can be a reinforcing rib formed by concave-convex of the baffle 1401 itself.

[0286] It should be noted that, as shown in FIGS. 8 and 10, the exhaust area F of the heat exchange assembly of the embodiment can also be provided with a first mesh cover 142. In the case where the first mesh cover 142 is provided, the connecting rod 141 can be cancelled, and the baffle 1401 can be connected with the surrounding plate 1402 through the first mesh cover 142. It should be noted that, as shown in FIG. 11, the two baffles 1401 of the heat exchange assembly of the embodiment can also be provided at intervals. Each baffle 1401 is provided opposite to the corresponding position of the exhaust port 113. Along the axial direction of the exhaust port 113, the projection of the baffle 1401 to the impeller 1312 is entirely located within the radial dimension range of the impeller 1312. A fixing plate for installing the indicator light 400 can also be provided between the two baffles 1401. It should be noted that the baffle 1401 of FIG. 11 is provided with a small hole structure with a small proportion. That is, the proportion of the small hole structure is much smaller than the plate body area of the baffle 1401.

[0287] Some embodiments of the present application also provide a heat exchange assembly 101, 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 proposed in 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 connected in sequence through the refrigerant pipeline 190 to form a refrigerant circuit.

[0288] Any one of the compressor 150, the throttling assembly 160, and the second heat exchanger 180 can also be integrated in the shell 110. Of course, these components can also be independently provided.

[0289] The heat exchange assembly 101 of the embodiment has the same beneficial effects as the heat exchange assembly proposed in the present application or any embodiment of the present application.

[0290] Some embodiments of the present application provide an energy storage device 10, comprising a storage body 11, a battery device 12, and a heat exchange assembly 101. The battery device 12 is contained in the storage body 11, and the heat exchange assembly 101 is used to adjust the temperature of the battery device 12. The heat exchange assembly 101 is the heat exchange assembly proposed in the present application or any embodiment of the present application.

[0291] The heat exchange assembly 101 can be provided inside the storage body 11 or outside the storage body 11.

[0292] The energy storage device 10 of the embodiment has the same beneficial effects as the heat exchange assembly proposed in the present application or any embodiment of the present application.

[0293] Some embodiments of the present application also provide an energy storage device 10, comprising a battery device 12 and a thermal management system 14, the thermal management system 14 being configured to regulate the temperature of the battery device 12; wherein the thermal management system 14 comprises a second heat exchange loop 200 and a first heat exchange loop 100, the second heat exchange loop 200 being configured to exchange heat with the battery device 12; the first heat exchange loop 100 comprises a heat exchange assembly 101, the heat exchange assembly 101 can be the heat exchange assembly 101 provided by any of the embodiments of the present application, and the first heat exchange loop 100 is configured to exchange heat with the second heat exchange loop 200.

[0294] The first heat exchange loop 100 and the second heat exchange loop 200 cooperate to realize heat dissipation of the battery device 12 by the first heat exchanger 120.

[0295] The energy storage device 10 of the present embodiment has the same beneficial effects as the heat exchange assembly provided by the present application or any of the embodiments of the present application.

[0296] Some embodiments of the present application also provide a charging system, comprising a charging pile, the charging system further comprising the energy storage device 10 provided by the present application or any of the embodiments of the present application, the charging pile being electrically connected to the battery device 12 of the energy storage device 10, and the energy storage device 10 being configured to provide electric energy for the charging pile.

[0297] The charging pile refers to a power supply device for providing power supply for an electric device (such as an electric vehicle) or the like. The energy storage device 10 can convert the electric current of the energy storage device 10 into electric energy for the charging pile or the like by setting a power conversion device.

[0298] The charging system of the present embodiment has the same beneficial effects as the energy storage device 10 provided by the present application or any of the embodiments of the present application.

[0299] 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 will not be described herein for the sake of brevity.

[0300] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. 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. An energy storage device, wherein, The application relates to a battery device, comprising: a battery body; a battery device accommodated in the battery body; and a heat exchange assembly for adjusting the temperature of the battery device, the heat exchange assembly comprising: a housing; a first heat exchanger arranged in the housing, the first heat exchanger being used for heat exchange of the battery device; and a fan arranged in the housing, the fan being used for heat exchange of the first heat exchanger; the housing comprises oppositely arranged first and second walls, the fan is arranged on the first wall, the second wall comprises an air outlet and a baffle, the baffle is arranged in the middle region of the second wall, and a sound absorption structure is arranged between the first and second walls. The fan is arranged to blow air obliquely, and the baffle is arranged opposite the fan along the thickness direction of the first wall.

2. The energy storage device of claim 1, wherein, The air outlet is arranged around the baffle.

3. The energy storage device of claim 1 or 2, wherein, The second wall further comprises a plurality of connecting rods, the connecting rods are arranged at intervals in the circumferential direction of the baffle, the baffle is connected with the connecting rods, the connecting rods are fixed to the first wall, and the air outlet is formed between adjacent connecting rods.

4. The energy storage device of any one of claims 1-3, wherein, Alternatively, the second wall further comprises a first mesh cover, the first mesh cover surrounds the baffle in the circumferential direction, the baffle is connected with the first mesh cover and is fixed by the first mesh cover, and the mesh holes in the first mesh cover are the air outlet. A plurality of fans are arranged on the first wall, and the baffle is arranged opposite the position of each fan.

5. The energy storage device of any one of claims 1-4, wherein, The baffle is in one-to-one correspondence with the fans and is arranged at intervals, or one baffle corresponds to a plurality of fans. The baffle is circular or elliptical.

6. The energy storage device of any one of claims 1-5, wherein, The baffle is arranged in a solid structure.

7. The energy storage device of any one of claims 1-6, wherein, The baffle is arranged in a metal plate.

8. The energy storage device of any one of claims 1-7, wherein, The area of the baffle accounts for 30% to 50% of the area of the second wall.

9. The energy storage device of any one of claims 1-8, wherein, The length dimension L1 of the baffle along the length direction of the second wall is 70% to 90% of the length dimension L2 of the second wall.

10. The energy storage device of any one of claims 1-9, wherein, And / or, the width dimension W1 of the baffle along the width direction of the second wall is 30% to 60% of the width dimension W2 of the second wall. The baffle is provided with the sound absorption structure on the plate surface facing the first wall.

11. The energy storage device of any one of claims 1-10, wherein, And / or, the first wall is provided with the sound absorption structure on the side facing the second wall. The air outlet is provided with an air outlet grille structure.

12. The energy storage device of any one of claims 1-10, wherein, The housing further comprises a surrounding plate connected between the first and second walls, and the surrounding plate surrounds the fan.

13. The energy storage device of any one of claims 1-12, wherein, The surrounding plate is provided with the sound absorption structure on the side facing the fan.

14. The energy storage device of claim 13, wherein, The heat exchange assembly is arranged in the battery body, and the surrounding plate is arranged in a closed structure.

15. The energy storage device of claim 13 or 14, wherein, The sound absorption structure is arranged in a porous sound absorption structure and / or a resonance sound absorption structure.

16. The energy storage device of any one of claims 1-15, wherein, The fan and the baffle are spaced apart along the arrangement direction from the first wall to the second wall.

17. The energy storage device of any one of claims 1-16, wherein, The wind speed of the heat exchange assembly at the baffle is smaller than the wind speed of the heat exchange assembly at the air outlet.

18. The energy storage device of any one of claims 1-16, wherein, The fan comprises:

19. The energy storage device of any one of claims 1-18, wherein, an air guide ring mounted on the first wall; ​ Impeller assembly, comprising an impeller and a blade, the impeller is cylindrically arranged, the impeller is arranged outside the blade and is fixedly connected with the blade, the air ring has an air ring air inlet end and an air ring air outlet end at two axial ends thereof, the impeller has an impeller air inlet end and an impeller air outlet end at two axial ends thereof, the air ring air outlet end is arranged inside the impeller air inlet end along the axial direction of the impeller, and the air ring and the impeller are gap-fitted along the radial direction of the impeller, and the impeller assembly is configured to be rotatable relative to the air ring. The impeller is provided with a blocking portion which is arranged to protrude from the outer peripheral wall of the impeller.

20. The energy storage device of any one of claims 1-19, wherein, The shell is further provided with an air inlet which is in communication with the interior of the shell and is arranged in a mesh structure.

21. The energy storage device of any one of claims 1-20, wherein, The heat exchange assembly further comprises a compressor, a throttling assembly, a second heat exchanger and a refrigerant pipeline, the compressor, the first heat exchanger, the throttling assembly and the second heat exchanger are sequentially connected by the refrigerant pipeline to form a first heat exchange circuit, and the energy storage device further comprises a second heat exchange circuit, the second heat exchange circuit is used for heat exchange with the battery device, and the first heat exchange circuit is used for heat exchange with the second heat exchange circuit. And / or, the heat exchange assembly is arranged inside or outside the bin body.

22. A charging system, wherein, It comprises: a charging pile; and The energy storage device according to any one of claims 1-21, the charging pile is electrically connected with the battery device of the energy storage device, and the energy storage device is used for providing electric energy for the charging pile. ​

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