Heat exchange device for energy storage device and energy storage device

Abstract

The invention discloses a heat exchange device for an energy storage device and the energy storage device, and the heat exchange device comprises a shell which comprises an inner cavity, and an air inlet and an air outlet which communicate with the inner cavity; the heat exchange assembly comprises an evaporator and at least one condenser and is arranged in the inner cavity, the condenser is located between the air inlet and the air outlet, and the condenser is closer to the air outlet side than the evaporator; and each cross-flow fan comprises a rotatable cross-flow impeller, each cross-flow impeller is located in the inner cavity and located between the condenser and the air outlet, the multiple cross-flow fans are arranged, and the axis directions of rotating shafts of the cross-flow impellers are consistent. The noise of the heat exchange device can be reduced, and the heat exchange efficiency is improved.

Description

TECHNICAL FIELD

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

[0002] With the rapid development of new energy technology, energy storage devices have become one of the more important research directions in the field of new energy. The heat exchange device for the energy storage device, as an important equipment in the energy storage device, its heat exchange efficiency and noise problem are concerned. SUMMARY

[0003] To solve the above technical problems, the present application provides a heat exchange device for an energy storage device with high heat exchange efficiency and low noise and the energy storage device.

[0004] The present application is implemented by the following technical solutions.

[0005] The first aspect of the present application provides a heat exchange device for an energy storage device, comprising: a shell comprising an inner cavity, an air inlet and an air outlet communicating with the inner cavity; a heat exchange assembly comprising an evaporator and at least one condenser, the evaporator and the condenser being arranged in the inner cavity, the condenser being located between the air inlet and the air outlet, and the condenser being closer to the air outlet side than the evaporator; and a plurality of cross-flow fans, each cross-flow fan comprising a plurality of rotatable cross-flow impellers, each cross-flow impeller being located in the inner cavity and between the condenser and the air outlet, and the plurality of cross-flow fans being arranged with the axis directions of the rotating shafts of the cross-flow impellers being consistent.

[0006] By arranging the plurality of cross-flow fans and making the axis directions of the rotating shafts of the cross-flow impellers of each cross-flow fan consistent, the probability of mutual interference between air flows is lower, so that the air flows can flow more uniformly and stably through the condenser, and the air volume flowing through the condenser can be improved, thereby continuously and efficiently taking away more heat from the condenser and improving the heat exchange efficiency of the condenser. In addition, the cross-flow fan has more uniform air outlet than the axial flow fan, thereby also reducing noise.

[0007] In some embodiments, at least two of the plurality of cross-flow fans are arranged along the axis direction in a coaxial manner with the cross-flow impellers, and the axis direction is parallel to the plane where the air outlet is located.

[0008] By arranging at least two of the plurality of cross-flow fans along the axis direction in a coaxial manner with the cross-flow impellers, and making the axis direction parallel to the plane where the air outlet is located, the number of cross-flow fans arranged in a coaxial manner with the cross-flow impellers can be flexibly adapted according to the size of the air outlet, thereby helping to achieve a better air outlet effect and reduce noise within a limited size range of the air outlet.

[0009] In some embodiments, at least two of the plurality of cross-flow fans are arranged side-by-side with the cross-flow impellers aligned along a first direction, the first direction being perpendicular to the axis and parallel to the plane where the air outlet is located.

[0010] Therefore, the number of cross-flow fans can be flexibly adapted according to the size of the air outlet along the first direction, which helps to achieve better air outlet effect and reduce noise.

[0011] In some embodiments, at least two of the plurality of cross-flow fans are arranged side-by-side with the cross-flow impellers aligned along a first direction, the first direction being perpendicular to the axis and parallel to the plane where the air outlet is located.

[0012] In a series of cross-flow fans, at least two cross-flow fans are arranged side by side with cross-flow impellers along a first direction, which is perpendicular to the axis and parallel to the plane where the air outlet is located. The number of cross-flow fans can be flexibly adapted according to the size of the air outlet along the first direction, thereby helping to achieve better air outlet performance and reduce noise.

[0013] In some embodiments, the air outlet is configured as an elongated strip, and the axial direction is consistent with the length direction of the air outlet.

[0014] The extension direction of the cross-flow impellers of multiple cross-flow fans is consistent with the extension direction of the air outlet opening, which can increase the air outlet area and reduce noise.

[0015] In some embodiments, each of the cross-flow fans includes a fan housing, each fan housing houses its respective cross-flow impeller, and an airflow channel is formed between the fan housing and the cross-flow impeller, each airflow channel being independent of the others.

[0016] By ensuring that each airflow channel operates independently, the airflow moves within its own channel without interference, resulting in more stable and even airflow discharge and reduced noise. Furthermore, the independence of each airflow channel facilitates control over the direction, speed, and flow rate of each airflow, allowing for flexible adjustments to airflow distribution to achieve optimal airflow performance. Additionally, it facilitates the maintenance and replacement of the cross-flow fan.

[0017] In some embodiments, the plurality of cross-flow fans include a pair of cross-flow fans arranged along the first direction. Each of the pair of cross-flow fans includes a fan housing, each fan housing accommodating its own cross-flow impeller. An airflow channel is formed between the fan housing and the cross-flow impeller. Each airflow channel is independent of the others. The fan housing has an inner guide surface on the side facing the airflow channel. In the pair of cross-flow fans, the cross-flow impeller and the inner guide surface of one of the cross-flow fans are arranged as a mirror image of the cross-flow impeller and the inner guide surface of the other cross-flow fan.

[0018] The mirror-image cross-flow impellers and inner guide surfaces in the two cross-flow fans make the airflow distribution at the outlet of each airflow channel more uniform and reduce noise.

[0019] In some embodiments, the inner guide surface includes a first guide surface and a second guide surface. The first guide surface includes an arc-shaped guide surface, and the second guide surface includes an oblique guide surface. The oblique guide surface is configured to be closer to the first guide surface the closer it is to the air outlet.

[0020] Curved and angled guide surfaces can guide airflow more smoothly toward the air outlet, thereby reducing wind resistance and noise.

[0021] In some embodiments, the condenser includes a windward side and a leeward side, the leeward side facing the cross-flow impeller, and at least the leeward side is formed such that it is further away from the air outlet as it gets closer to the middle surface, the middle surface being an imaginary plane that perpendicularly bisects the air outlet.

[0022] By shaping the leeward side of the condenser so that it is further away from the air outlet as it gets closer to the center, the leeward side partially surrounds the cross-flow fan. This increases the area through which the airflow passes through the condenser, improves the heat exchange efficiency of the condenser, and also reduces the space occupied in the inner cavity of the casing, which helps to improve space utilization.

[0023] In some embodiments, the leeward side of the condenser is formed symmetrical about the mid-face.

[0024] This helps the airflow pass through the condenser more evenly, thereby improving heat exchange efficiency, and also helps the airflow flow more evenly to the air outlet, resulting in more uniform airflow and thus reducing noise.

[0025] In some embodiments, of the windward side and the leeward side, at least the leeward side includes an arcuate surface or an inclined surface that is inclined relative to the intermediate surface.

[0026] By using the condenser's leeward side, which can include an arc surface or an inclined surface relative to the middle surface, the surface area of ​​the condenser can be increased, thereby improving the heat exchange efficiency.

[0027] In some embodiments, the heat exchange assembly includes two condensers, the leeward side of each condenser being formed as an inclined surface, and the two condensers being connected to each other at their closest ends.

[0028] Two condensers with inclined leeward sides are connected to form a condenser combination with increased surface area, which can improve heat exchange efficiency without changing the structure of each condenser and reduce manufacturing costs.

[0029] In some embodiments, the heat exchange assembly includes a condenser, wherein the leeward side of the condenser is formed as an arcuate surface or an inclined surface.

[0030] Forming the leeward side of a condenser into an arc or inclined surface can increase the condenser's surface area, thereby improving heat exchange efficiency. It can also reduce the risk of air leakage caused by poor sealing of multiple condenser connections, thus reducing airflow loss and further improving heat exchange efficiency.

[0031] In some embodiments, the airflow channel includes an inlet and an outlet, and the projections of the inlets of each cross-flow fan onto the leeward side of the condenser along a second direction perpendicular to the axial direction do not overlap.

[0032] The airflow generated by each cross-flow fan passes through different positions of the condenser, which increases the heat exchange area between the airflow and the condenser, thereby removing more heat from the condenser and improving heat exchange efficiency.

[0033] In some embodiments, the heat exchange assembly includes two or more condensers connected together, the condensers being arranged along a first direction, the projection of the inlet of each cross-flow fan corresponding one-to-one with the leeward side of each condenser, and the first direction being perpendicular to the second direction and the axial direction.

[0034] By projecting the inlet of each cross-flow fan along the second direction Z onto the leeward side of the condenser, and having a one-to-one correspondence with the leeward side of each condenser, the airflow generated by each cross-flow fan passes through different condensers, thereby removing heat from each condenser and improving the heat exchange efficiency of each condenser.

[0035] In some embodiments, the closest distance between the rim of the cross-flow impeller and the leeward side of the condenser is greater than or equal to 5 mm.

[0036] A suitable distance between the cross-flow impeller and the condenser can provide a gap for airflow, making the airflow smoother and improving the efficiency of airflow passing through the condenser.

[0037] In some embodiments, the cross-flow fan and the condenser are located adjacent to the air outlet.

[0038] This allows for a shorter air outlet distance, smoother airflow, and more space for the arrangement of other components.

[0039] In some embodiments, the housing includes a first housing wall and a second housing wall opposite each other along a first direction, the air outlet is located between the first housing wall and the second housing wall, and the condenser is connected to the first housing wall and the second housing wall at both ends along a second direction, respectively.

[0040] This reduces airflow loss, allowing more airflow to pass through the condenser and improving heat exchange efficiency.

[0041] In some embodiments, along the second direction, a seal is provided between one end of the condenser and the first shell wall and between the other end of the condenser and the second shell wall.

[0042] This reduces the risk of air leakage and improves heat exchange efficiency.

[0043] In some embodiments, the heat exchange assembly further includes a compressor, an evaporator, and an expansion valve, wherein the compressor, the condenser, the evaporator, and the expansion valve are connected via a refrigerant circulation pipeline.

[0044] Because the airflow generated by the rotation of the cross-flow impeller can evenly remove the heat generated by the condenser, the heat exchange components can continuously and efficiently exchange heat with the battery in the energy storage device, thereby improving the battery's performance.

[0045] A second aspect of this application provides an energy storage device, comprising: an energy storage box housing at least one battery device; and a heat exchange device as described in any of the above embodiments, the heat exchange device being used for heat exchange with the battery device.

[0046] In some embodiments, the heat exchange device is disposed inside the energy storage box, and the energy storage box is provided with an exhaust port communicating with the air outlet and an air inlet communicating with the air inlet.

[0047] Effects of the invention: This application can reduce the noise of the heat exchange device and improve the heat exchange efficiency. Attached Figure Description

[0048] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0049] Figure 1 Schematic diagrams of the heat exchange device provided for some embodiments of this application;

[0050] Figure 2 Exploded view of a battery device provided for some embodiments of this application;

[0051] Figure 3 Schematic diagrams of the structure of a battery cell assembly provided for some embodiments of this application;

[0052] Figure 4 Schematic diagram of the housing of a heat exchange device provided for some embodiments of this application;

[0053] Figure 5 A side view of a heat exchange device provided for some embodiments of this application, wherein the housing of the cross-flow fan is omitted;

[0054] Figure 6 A top-view schematic diagram of the internal structure of a heat exchange device provided for some embodiments of this application;

[0055] Figure 7 A top-view schematic diagram of the internal structure of a heat exchange device provided for other embodiments of this application;

[0056] Figure 8 A side view of a heat exchange device provided for some other embodiments of this application, wherein the housing of the cross-flow fan is omitted;

[0057] Figure 9 A top-view schematic diagram of the internal structure of a heat exchange device provided for further embodiments of this application;

[0058] Figure 10 A top-view schematic diagram of the internal structure of a heat exchange device provided in some embodiments of this application;

[0059] Figure 11 Simplified structural diagrams of heat exchange components provided for some embodiments of this application;

[0060] Figure 12 A simplified structural diagram of a heat exchange assembly and a battery device that exchange heat through a thermal management assembly, provided for some embodiments of this application.

[0061] Explanation of reference numerals in the attached figures:

[0062] 1000 - Energy storage device; 110 - Energy storage box; 120 - Battery device; 1 - Battery cell; 2 - First enclosure; 3 - Second enclosure; 111 - Exhaust vent; 112 - Air inlet;

[0063] 100 - Heat exchanger;

[0064] 10-Shell; 11-Air inlet; 12-Air outlet; 10a-Inner cavity; 101-First shell wall; 102-Second shell wall; 103-Top wall; 104-Bottom wall;

[0065] 20-Heat exchange assembly; 21-Condenser; 21a-Leaf side; 21b-Windward side; 211-First arc section; 212-Second arc section; 22-Compressor; 23-Evaporator; 24-Expansion valve;

[0066] 30-Cross-flow fan; 31-Cross-flow impeller; 32-Fan casing; 32a-Airflow channel; 32b-Guide surface; 32b-1-First guide surface; 32b-2-First guide surface.

[0067] 131-Heat exchange medium loop pipeline; 132-Circulating pump; 133-Liquid cooling plate. Detailed Implementation

[0068] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0069] 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 limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0070] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0071] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0072] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0073] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0074] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0075] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0076] The following is a detailed description of this application.

[0077] With the rapid development of new energy technologies, energy storage devices have become one of the most important research directions in the field of new energy. As an important part of energy storage devices, the heat exchange efficiency and noise issues of heat exchange devices have attracted much attention.

[0078] Heat exchangers (heat exchange units) generate a significant amount of heat during operation, affecting heat exchange efficiency. The condenser, located within the shell of the heat exchanger, is the primary heat-generating component. Currently, the heat from the condenser is carried away by the airflow generated by an axial fan. However, because the airflow generated by the axial fan is relatively concentrated and lacks uniformity, it results in excessive noise. Furthermore, the airflow can only remove heat from a localized area of ​​the condenser, leading to poor heat exchange efficiency.

[0079] Based on this design concept, this application provides a heat exchange device, including: a shell, including an inner cavity and an air inlet and an air outlet communicating with the inner cavity; a heat exchange assembly, including an evaporator and at least one condenser, the evaporator and condenser being disposed in the inner cavity, the condenser being located between the air inlet and the air outlet; the condenser being closer to the air outlet side than the evaporator; a plurality of cross-flow fans, each cross-flow fan including a rotatable cross-flow impeller, each cross-flow impeller being located in the inner cavity and between the condenser and the air outlet, the plurality of cross-flow fans being arranged in a row and the axis of rotation of each cross-flow impeller being aligned.

[0080] By arranging multiple cross-flow fans and aligning the axes of their impellers, the probability of mutual interference between airflows is reduced. This allows for a more uniform and stable airflow through the condenser, increasing the air volume passing through it. Consequently, more heat is continuously and efficiently removed from the condenser, improving its heat exchange efficiency. Furthermore, cross-flow fans provide more uniform airflow compared to axial fans, which also reduces noise.

[0081] The heat exchange device of this application can be applied to energy storage devices and can be used to exchange heat with the battery device in the energy storage device.

[0082] In this embodiment, the energy storage device includes one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0083] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0084] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0085] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0086] In some embodiments, refer to Figure 1The energy storage device 1000 may include an energy storage box (cabinet) 110 and at least one battery device 120 housed within the energy storage box 110. The energy storage device 1000 may also include a heat exchange device 100, which can be used to exchange heat with the battery device 120 to perform thermal management on the battery device 120, such as heating or cooling the battery device 120, thereby improving the performance of the battery device 120 and reducing the risk of thermal runaway of the battery device 120.

[0087] Reference Figure 2 and Figure 3 The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells 1, which are connected in series, parallel, or mixed connections via a busbar.

[0088] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0089] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0090] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cells housed within the housing.

[0091] As an example, the battery cell assembly can be a battery module, which can be housed in a housing by fixing the battery module in the housing.

[0092] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0093] As an example, the enclosure may include a first enclosure 2 and a second enclosure 3. The first enclosure 2 and the second enclosure 3 are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0094] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0095] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0096] Reference Figure 2 and Figure 3 Battery cell 1 can be a secondary battery. A secondary battery is a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0097] The battery cell 1 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0098] A battery cell 1 typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0099] In some embodiments, the battery cell 1 further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. This application does not impose specific limitations on the type of electrolyte, which can be selected according to requirements. The electrolyte can be liquid, gel, or solid.

[0100] In some embodiments, the electrode assembly is a wound structure. The positive electrode and the negative electrode are wound into a wound structure.

[0101] In some embodiments, the electrode assembly has a stacked structure.

[0102] In some embodiments, the electrode assembly has tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0103] In some embodiments, the battery cell 1 may include a battery casing. The battery casing is used to encapsulate components such as electrode assemblies and electrolytes. The battery casing may be a steel casing, an aluminum casing, a plastic casing (such as a polypropylene casing), a composite metal casing (such as a copper-aluminum composite casing), or an aluminum-plastic film, etc.

[0104] As an example, the battery cell 1 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0105] In some embodiments, the battery casing includes an end cap and a battery housing, the battery housing having an opening, and the end cap closing the opening to form a sealed space for accommodating substances such as electrode components and electrolyte. The battery housing may have one or more openings. The end cap may also have one or more end caps.

[0106] In some embodiments, at least one electrode terminal is provided on the battery casing, and the electrode terminal is electrically connected to the tab. The electrode terminal can be directly connected to the tab or indirectly connected to the tab through an adapter. The electrode terminal can be provided on the end cap or on the battery casing.

[0107] In some embodiments, a pressure relief mechanism is provided on the battery casing. The pressure relief mechanism is used to release the internal pressure of the battery cells.

[0108] Below, refer to Figure 4 to Figure 12 The heat exchange apparatus of some embodiments of this application will be described in detail.

[0109] This application provides a heat exchange device 100 that can be used in an energy storage device, comprising: a housing 10 including an inner cavity 10a and an air inlet 11 and an air outlet 12 communicating with the inner cavity 10a; a heat exchange assembly 20 including an evaporator 23 and at least one condenser 21, the evaporator 23 and the condenser 21 being disposed in the inner cavity 10a, the condenser 21 being located between the air inlet 11 and the air outlet 12, the condenser 21 being closer to the air outlet 12 than the evaporator 23; and a plurality of cross-flow fans 30, each cross-flow fan 30 including a rotatable cross-flow impeller 31, each cross-flow impeller 31 being located in the inner cavity 10a and between the condenser 21 and the air outlet 12, the plurality of cross-flow fans 30 being arranged in a row and the axial direction X of the rotation axis L of each cross-flow impeller 31 being consistent.

[0110] The housing 10 has an internal cavity 10a, which provides installation space for the heat exchange assembly 20 and the cross-flow fan 30. The internal cavity 10a also serves as an air duct connecting the air inlet 11 and the air outlet 12. The air outlet 12 may be a fully or partially open side of the housing 10. The air inlet 11 may be located on the opposite and / or adjacent side of the air outlet 12. The shape of the air outlet 12 may be elongated, square, circular, or other shapes.

[0111] As an example, refer to Figure 4 The housing 10 is a square housing, having an air inlet 11 and an air outlet 12 opposite each other along the length direction Z of the housing 10. Specifically, the housing 10 also includes a first housing wall 101 oppositely arranged along the width direction Y. Figure 7 (as shown) and the second shell wall 102 ( Figure 7As shown, the first shell wall 101, the second shell wall 102, the top wall 103 and the bottom wall 104, which are opposite each other along the height direction X (which is also the axial direction X of the cross-flow impeller 31), together form an inner cavity 10a with an air inlet 11 and an air outlet 12.

[0112] The heat exchange component 20 can be used to exchange heat with the battery 120 in the energy storage device 1000, thereby performing thermal management of the battery 120, such as heating or cooling the battery 120, so that the battery 120 can maintain a good operating temperature and reduce the risk of thermal runaway of the battery 120.

[0113] The heat exchange assembly 20 may include an evaporator 23 and a condenser 21, which are located between the air inlet 11 and the air outlet 12, with the condenser 21 closer to the air outlet 12 than the evaporator 23. Figure 6 , Figure 7 , Figure 9 , Figure 10 In the illustrated embodiment, the evaporator 23 can be arranged in the space to the left of the condenser 21 within the inner cavity 10a of the housing 10. The condenser 21 can have a windward side 21b and a leeward side 21a. During the operation of the cross-flow fan 30, the airflow flows from the windward side 21b to the leeward side 21a of the condenser 21. The windward side 21b is closer to the air inlet 11, and the leeward side 21a is closer to the air outlet 12.

[0114] As an example, refer to Figure 11 The heat exchange assembly 20 also includes a compressor 22 and an expansion valve 24. The compressor 22, condenser 21, evaporator 23, and expansion valve 24 are connected by a refrigerant circulation line. The refrigerant circulation line is used to supply refrigerant (e.g., Freon).

[0115] The condenser 21 generates a large amount of heat during operation. Removing the heat generated by the condenser 21 to the outside of the shell 10 in a timely and efficient manner can reduce the temperature of the condenser 21 itself and the inner cavity 10a of the shell 10, thereby improving the heat exchange efficiency of the condenser 21.

[0116] Each cross-flow fan 30 includes a rotatable cross-flow impeller 31, which can be driven to rotate by a motor installed in the fan housing 32.

[0117] Each cross-flow impeller 31 is located in the inner cavity 10a and between the condenser 21 and the air outlet 12. The rotation of the cross-flow impeller 31 can generate local negative pressure, so that the external airflow enters the inner cavity 10a from the air inlet 11 and passes through the windward side 21b and the leeward side 21a of the condenser 21 in sequence, thereby carrying out the heat generated by the condenser 21 during operation through the air outlet 12.

[0118] Multiple cross-flow fans 30 are arranged in a manner that allows them to be arranged along the axial direction X, for example, longitudinally; or along a first direction Y perpendicular to the axial direction X, for example, laterally; or a portion of the multiple cross-flow fans 30 may be arranged along the axial direction X and another portion along the first direction Y, for example, cross-flow fans 30 may be arranged both longitudinally and laterally.

[0119] The rotation axes L of each cross-flow impeller 31 are aligned in the same direction (X), which can be understood as the rotation axes L of each cross-flow impeller 31 being parallel and / or coaxial. For example, see... Figure 8 When the rotation axes L of multiple cross-flow impellers 31 (e.g., two) are parallel to each other, multiple cross-flow fans 30 can be arranged along the first direction Y; for example, see Figure 5 When the rotating shafts L of multiple cross-flow impellers 31 (e.g., two) are coaxial, multiple cross-flow fans 30 can be arranged along the axial direction X.

[0120] The arrangement of multiple cross-flow fans 30 increases the area of ​​airflow passing through the condenser 21 and improves the air volume passing through the condenser 21, thereby uniformly and efficiently removing the heat generated by the condenser 21 and improving heat exchange efficiency. In addition, the axial direction X of the rotation shaft L of each cross-flow impeller 31 is consistent, so that the airflow generated by the rotation of each cross-flow impeller 31 is roughly in the same direction, reducing the probability of mutual interference between airflows. This allows the airflow to flow more stably through the condenser 21, continuously and efficiently removing the heat generated by the condenser 21 and improving heat exchange efficiency. Furthermore, the cross-flow fans 30 provide more uniform airflow and lower noise compared to axial fans.

[0121] In some embodiments, among the plurality of cross-flow fans 30, at least two cross-flow fans 30 are arranged along the axial direction X with cross-flow impellers 31 coaxial, and the axial direction X is parallel to the plane where the air outlet 12 is located.

[0122] In a plurality of cross-flow fans 30, at least two cross-flow fans 30 are arranged along the axial direction X with their cross-flow impellers 31 coaxial. This can be achieved by having the rotation shafts L of the cross-flow impellers 31 of each cross-flow fan 30 aligned in the same direction, with some impellers 31 having coaxial rotation shafts L and others having non-coaxial rotation shafts L, for example, arranged along a first direction Y perpendicular to the axial direction X; or, in a plurality of cross-flow fans 30, the rotation shafts L of the cross-flow impellers 31 of each cross-flow fan 30 aligned in the same direction, and all impellers 31 having coaxial rotation shafts L. "Coaxial" can be understood as the rotation shafts L of each cross-flow impeller 31 being approximately on the same axis, i.e., their axes approximately coincident. It should be understood that the rotation shafts L of each cross-flow impeller 31 being approximately on the same axis can be completely coincident, or deviations are permissible within allowable limits, including installation errors.

[0123] The axial direction X is parallel to the plane containing the air outlet 12, where the plane containing the air outlet 12 is an imaginary plane, for example, in... Figure 4 In the square shell 10, the imaginary surface is perpendicular to the first shell wall 101, the second shell wall 102, the top wall 103, and the bottom wall 104.

[0124] As an example, refer to Figure 5 The rotating shafts L of the two cross-flow impellers 31 of the cross-flow fans 30 are set coaxially, and each cross-flow impeller 31 can rotate around its own rotating shaft L.

[0125] Among multiple cross-flow fans 30, at least two cross-flow fans 30 are arranged coaxially with cross-flow impellers 31 along the axial direction X, and the axial direction X is parallel to the plane where the air outlet 12 is located. The number of cross-flow fans 30 can be flexibly adapted according to the size of the air outlet 12 along the axial direction X, thereby helping to achieve better air outlet effect and reduce noise.

[0126] In some embodiments, among the plurality of cross-flow fans 30, at least two cross-flow fans 30 are arranged side by side with cross-flow impellers 31 along a first direction Y, the first direction Y being perpendicular to the axial direction X and parallel to the plane where the air outlet 12 is located.

[0127] In a plurality of cross-flow fans 30, at least two cross-flow fans 30 are arranged in a manner in which the cross-flow impellers 31 are arranged side by side along the first direction Y. Alternatively, in a plurality of cross-flow fans 30, the cross-flow impellers 31 of some cross-flow fans 30 are arranged side by side along the first direction Y, while the cross-flow impellers 31 of other cross-flow fans 30 are not arranged along the first direction Y, for example, they are arranged along the axial direction X; or, in a plurality of cross-flow fans 30, the cross-flow impellers 31 of all cross-flow fans 30 are arranged along the first direction Y.

[0128] As an example, refer to Figure 8 The impellers 31 of the two cross-flow fans 30 are arranged along the first direction Y, which is perpendicular to the axis X, and the rotation shafts L of the two cross-flow impellers 31 are parallel to each other.

[0129] Among the multiple cross-flow fans 30, at least two cross-flow fans 30 are arranged side by side with cross-flow impellers 31 along the first direction Y. The first direction Y is perpendicular to the axial direction X and parallel to the plane where the air outlet 12 is located. The number of cross-flow fans 30 can be flexibly adapted according to the size of the air outlet 12 along the first direction Y, which helps to achieve better air outlet effect and reduce noise.

[0130] In some embodiments, the air outlet 12 is configured as an elongated strip, with the axial direction X aligned with the length direction of the air outlet 12.

[0131] Reference Figure 4 The size of the air outlet 12 along the axial direction X (length direction) is larger than the size along the first direction Y, thus forming a long strip-shaped air outlet 12.

[0132] The extension direction of the cross-flow impeller 31 of the multiple cross-flow fans 30 is consistent with the extension direction of the opening of the air outlet 12, which can increase the air outlet area and reduce noise.

[0133] In some embodiments, each cross-flow fan 30 includes a fan housing 32, each fan housing 32 accommodating its own cross-flow impeller 31, and an airflow channel 32a is formed between the fan housing 32 and the cross-flow impeller 31, with each airflow channel 32a being independent of the others.

[0134] Each airflow channel 32a is independent of the others, which can be understood as the airflow flowing in its own airflow channel 32a without interfering with each other.

[0135] For example, each airflow channel 32a has an inlet facing the leeward side 21a of the condenser 21 and an outlet communicating with the air outlet 12. After the airflow comes out from the leeward side 21a of the condenser 21, it enters the inlet and flows out through the airflow channel 32a from the outlet, and finally is discharged outside the housing 10 through the air outlet 12.

[0136] By ensuring that each airflow channel 32a operates independently, the airflow moves within its own channel without interference, resulting in more stable and uniform airflow discharge and reduced noise. Furthermore, the independence of each airflow channel 32a facilitates control over the direction, speed, and flow rate of each airflow, allowing for flexible adjustments to airflow distribution to achieve optimal airflow performance. Additionally, it facilitates the maintenance and replacement of the cross-flow fan 30.

[0137] In some embodiments, refer to Figure 9 and Figure 10The plurality of cross-flow fans 30 includes at least one pair of cross-flow fans 30 arranged along a first direction Y. In the pair of cross-flow fans 30, each cross-flow fan 30 includes a fan housing 32, each fan housing 32 accommodating its own cross-flow impeller 31. An airflow channel 32a is formed between the fan housing 32 and the cross-flow impeller 31. Each airflow channel 32a is independent of each other. The fan housing 32 has an inner guide surface 32b on the side facing the airflow channel 32a. In the pair of cross-flow fans 30, the cross-flow impeller 31 and the inner guide surface 32b of one cross-flow fan 30 are arranged as mirror images of the cross-flow impeller 31 and the inner guide surface 32b of the other cross-flow fan 30.

[0138] As an example, the cross-flow impellers 31 and the inner guide surface 32b in the two cross-flow fans 30 can be mirror images of each other about the imaginary mid-plane O that vertically bisects the outlet 12.

[0139] The mirror-image impellers 31 and inner guide surfaces 32b in the two cross-flow fans 30 make the airflow distribution at the outlet of each airflow channel 32a more uniform and reduce noise.

[0140] In some embodiments, refer to Figure 10 The inner guide surface 32b includes a first guide surface 32b-1 and a second guide surface 32b-2. The first guide surface 32b-1 includes an arc-shaped guide surface, and the second guide surface 32b-2 includes an oblique guide surface. The oblique guide surface is configured such that it is closer to the first guide surface 32b-1 the closer it is to the air outlet 12.

[0141] The curved and angled guide surfaces allow the airflow to be guided more smoothly toward the air outlet 12, thereby reducing wind resistance and noise.

[0142] In some embodiments, the condenser 21 includes a windward side 21b and a leeward side 21a, with the leeward side 21a facing the cross-flow impeller 31. Of the windward side 21b and the leeward side 21a, at least the leeward side 21a is formed such that the closer it is to the middle surface O, the further it is from the air outlet 12. The middle surface O is an imaginary plane that perpendicularly bisects the air outlet 12.

[0143] The leeward side 21a is formed such that the closer it is to the center surface, the further it is from the air outlet 12. This can be understood as the part of the leeward side 21a near the center surface O being concave inward in the direction away from the air outlet 12. It is possible that only the leeward side 21a is concave, while the shape of the windward side 21b is not limited; it is also possible that the leeward side 21a is concave while the windward side 21b is convex outward in the direction away from the air outlet 12.

[0144] For example Figure 6 and Figure 9Two flat condensers 21 are inclined relative to the middle surface O and connected at opposite ends, forming a sharp angle structure between the leeward surfaces 21a of the two condensers 21, pointing away from the air outlet 12. Of course, such a sharp angle structure can also be formed by bending a flat condenser 21. Furthermore, the sharp angle structure formed by the two flat condensers 21 can also face towards the air outlet 12.

[0145] For example Figure 7 and Figure 10 A condenser 21 is bent into an arc shape. The leeward side 21a of the arc-shaped condenser 21 is concave, and the windward side 21b is convex. Alternatively, the leeward side 21a of the condenser 21 can be convex, and the windward side 21b can be concave.

[0146] The leeward side 21a of the condenser 21 is formed such that the closer it is to the middle surface O, the further it is from the air outlet 12. This allows the leeward side 21a to surround the cross-flow fan 30, which increases the area through which the airflow passes through the condenser 21, improves the heat exchange efficiency of the condenser 21, and also reduces the space occupied in the inner cavity 10a of the shell 10, thus helping to improve space utilization.

[0147] In some embodiments, the leeward side 21a of the condenser 21 is formed symmetrical about the intermediate surface O.

[0148] The leeward side 21a can be formed symmetrical about the intermediate surface O, or both the leeward side 21a and the windward side 21b can be symmetrical about the intermediate surface O. For example, both the leeward side 21a and the windward side 21b of the condenser 21 are symmetrical about the intermediate surface O. The condenser 21 can be a single condenser 21 or two condensers 21.

[0149] This helps the airflow pass through the condenser 21 more evenly, thereby improving the heat exchange efficiency, and also helps the airflow flow more evenly to the air outlet 12, resulting in more uniform airflow and thus reducing noise.

[0150] In some embodiments, of the windward side 21b and the leeward side 21a, at least the leeward side 21a includes an arcuate surface or an inclined surface that is inclined relative to the intermediate surface O.

[0151] For example, refer to Figure 6 and Figure 9 The leeward side 21a of the condenser 21 is an inclined surface, and the windward side 21b can also be an inclined surface. (Refer to...) Figure 7 and Figure 10 The leeward side 21a of the condenser 21 is an arc surface, wherein the arc surface is concave inward toward the direction away from the air outlet 12, and the windward side 21b is convex outward toward the direction away from the air outlet 12.

[0152] By including an arc surface or an inclined surface that is inclined relative to the middle surface O on the leeward side 21a of the condenser 21, the surface area of ​​the condenser 21 can be increased, thereby improving the heat exchange efficiency.

[0153] In some embodiments, refer to Figure 6 and Figure 9 The heat exchange assembly 20 includes two condensers 21, the leeward side 21a of each condenser 21 is formed as an inclined surface, and the two condensers 21 are connected to each other at their closest ends.

[0154] The two condensers 21 are connected to each other at their closest ends. This connection can be direct or indirect. For example, an indirect connection can be made by a partition.

[0155] Two condensers 21 with inclined leeward surfaces 21a are connected to form a condenser 21 assembly with increased surface area, which can improve heat exchange efficiency without changing the structure of each condenser 21 and reduce manufacturing costs.

[0156] In some embodiments, the heat exchange assembly 20 includes a condenser 21, the leeward side 21a of which is formed as an arc surface or an inclined surface.

[0157] Forming the leeward side 21a of a condenser 21 into an arc surface or an inclined surface can increase the surface area of ​​the condenser 21, thereby improving the heat exchange efficiency. It can also reduce the risk of air leakage between multiple condensers 21 due to poor sealing, thereby reducing airflow loss and further improving the heat exchange efficiency.

[0158] In some embodiments, the airflow channel 32a includes an inlet and an outlet, and the projections of the inlets of each cross-flow fan 30 onto the leeward side 21a of the condenser 21 along the second direction Z do not overlap with each other, and the second direction Z is perpendicular to the axial direction X.

[0159] The projections of the inlets of each cross-flow fan 30 along the second direction Z onto the leeward side 21a of the condenser 21 do not overlap. This can be understood as the projections of the inlets of each cross-flow fan 30 along the second direction Z onto the leeward side 21a of the condenser 21 being located at different positions on the leeward side 21a of the condenser 21. In other words, the inlets of each cross-flow fan 30 correspond to different positions on the leeward side 21a of the condenser 21.

[0160] The airflow generated by each cross-flow fan 30 passes through different positions of the condenser 21, which can increase the heat exchange area between the airflow and the condenser 21, thereby removing more heat from the condenser 21 and improving the heat exchange efficiency.

[0161] In some embodiments, the heat exchange assembly 20 includes two or more connected condensers 21 arranged along a first direction Y. The projection of the inlet of each cross-flow fan 30 onto the leeward surface 21a of the condenser 21 along a second direction Z corresponds one-to-one with the leeward surface 21a of each condenser 21. The first direction Y is perpendicular to the second direction Z and the axial direction X. This one-to-one correspondence can be understood as each leeward surface 21a of the condenser 21 corresponding to the inlet of one cross-flow fan 30.

[0162] As an example, refer to Figure 9 There are two condensers 21 and two cross-flow fans 30. The inlet of one cross-flow fan 30 corresponds to the leeward side 21a of one condenser 21, and the inlet of the other cross-flow fan 30 corresponds to the leeward side 21a of the other condenser 21. The inlet of the cross-flow fan 30 faces the leeward side 21a of the condenser 21.

[0163] By projecting the inlet of each cross-flow fan 30 along the second direction Z onto the leeward side 21a of the condenser 21, and having a one-to-one correspondence with the leeward side 21a of each condenser 21, the airflow generated by each cross-flow fan 30 passes through different condensers 21, thereby removing heat from each condenser 21 and improving the heat exchange efficiency of each condenser 21.

[0164] In some embodiments, refer to Figure 7 and Figure 8 The closest distance d between the rim of the cross-flow impeller 31 and the leeward side 21a is greater than or equal to 5 mm.

[0165] The closest distance d between the rim of the cross-flow impeller 31 and the leeward surface 21a is the shortest distance between the tangent of the rim of the cross-flow impeller 31 and the tangent of the leeward surface 21a.

[0166] The appropriate distance between the cross-flow impeller 31 and the condenser 21 can provide a gap for airflow to flow more smoothly and improve the efficiency of airflow passing through the condenser 21.

[0167] In some embodiments, the cross-flow fan 30 and the condenser 21 are located adjacent to the air outlet 12.

[0168] This allows for a shorter air outlet distance, smoother airflow, and more space for the arrangement of other components.

[0169] In some embodiments, the housing 10 includes a first housing wall 101 and a second housing wall 102 that are opposite each other along a first direction Y, the air outlet 12 is located between the first housing wall 101 and the second housing wall 102, and the condenser 21 is connected to the first housing wall 101 and the second housing wall 102 at both ends along the first direction Y.

[0170] The condenser 21 can be directly or indirectly connected to the first shell wall 101 and the second shell wall 102 at both ends along the first direction Y, so that the condenser 21 divides the inner cavity 10a into two closed spaces along the first direction Y, and multiple cross-flow impellers 31 are located in the closed space near the air outlet 12.

[0171] This reduces airflow loss, allowing more airflow to pass through the condenser 21 and improving heat exchange efficiency.

[0172] In some embodiments, along the second direction Z, seals (not shown) are respectively provided between one end of the condenser 21 and the first shell wall 101 and between the other end of the condenser 21 and the second shell wall 102.

[0173] Sealing components can be sealant, rubber gaskets, or other parts that provide a sealing effect. This reduces the risk of air leakage and improves heat exchange efficiency.

[0174] In some embodiments, the heat exchange assembly 20 further includes a compressor 22, an evaporator 23, and an expansion valve 24, which are connected by a refrigerant circulation pipeline.

[0175] As an example, the evaporator 23 may include two channels, one of which serves as a refrigerant channel for refrigerant circulation, and the other as a liquid cooling channel for communication with the battery heat exchange assembly within the energy storage device, thereby exchanging heat with the battery through the battery heat exchange assembly.

[0176] Since the airflow generated by the rotation of the cross-flow impeller 31 can uniformly remove the heat generated by the operation of the condenser 21, the heat exchange component 20 can continuously and efficiently exchange heat with the battery 120 in the energy storage device 1000, thereby improving the working performance of the battery 120.

[0177] The following reference Figure 4 to Figure 12 A specific example of this application will be illustrated.

[0178] The heat exchange device 100 of this application embodiment includes a housing 10, a heat exchange assembly 20, and a plurality of cross-flow fans 30. The housing 10 includes an inner cavity 10a and an air inlet 11 and an air outlet 12 communicating with the inner cavity 10a.

[0179] A heat exchange assembly 20 is disposed within the inner cavity 10a of the housing 10. The heat exchange assembly 20 includes a condenser 21, which has a windward side 21b facing the air inlet 11 and a leeward side 21a facing the air outlet 12. The leeward side 21a partially surrounds the inlet of a plurality of cross-flow fans 30. The plurality of cross-flow fans 30 are disposed within the inner cavity 10a. Each cross-flow fan 30 includes a fan housing 32 and a cross-flow impeller 31 rotatably connected to the fan housing 32. The cross-flow impeller 31 is located between the condenser 21 and the air outlet 12, and the axial direction X (height direction of the housing 10) of the rotation axis L of the cross-flow impeller 31 of each cross-flow fan 30 is consistent and extends along the length direction (height direction of the housing 10) of the elongated air outlet 12. Each fan housing 32 forms an airflow duct 32a, and each airflow duct 32a is independent of each other.

[0180] In one example, refer to Figure 8 and Figure 9 Two condensers 21 are provided, arranged and connected along the first direction Y (width direction of the housing 10). Both condensers 21 are inclined and symmetrical about the intermediate surface O. The intermediate surface O is a plane that perpendicularly bisects the air outlet 12 along the first direction Y. The end where the two condensers 21 are connected is concave inward on the leeward side 21a, away from the air outlet 12, and convex outward on the windward side 21b, away from the air outlet 12, thus forming a sharp angle structure. The sharp angle of this structure is opposite to the air outlet 12. The cross-flow impellers 31 of the two cross-flow fans 30 are arranged along the first direction Y and symmetrical about the intermediate surface O. The projections of the inlets of the two cross-flow fans 30 along the second direction Z (length direction of the housing 10) onto the leeward side 21a of the condensers 21 are respectively located on the leeward side 21a of the two condensers 21. In this way, the airflow generated by the rotation of each cross-flow fan 30 can pass through the condenser 21 respectively, thereby removing the heat from each condenser 21 and improving the heat exchange efficiency of each condenser 21.

[0181] In another example, refer to Figure 8 and Figure 10A single condenser 21 is provided, which is bent into an arc shape and symmetrical about the intermediate surface O. The condenser 21 has a first arc portion 211 and a second arc portion 212 symmetrical about the intermediate surface O along the first direction Y. The leeward side 21a of the arc-shaped condenser 21 is concave, and the windward side 21b is convex, with the convex side facing away from the air outlet 12. The cross-flow impellers 31 of two cross-flow fans 30 are arranged along the first direction Y and symmetrical about the intermediate surface O. The projections of the inlets of the two cross-flow fans 30 along the second direction Z onto the leeward side 21a of the condenser 21 are respectively located at the first arc portion 211 and the second arc portion 212 of the leeward side 21a of the condenser 21. In this way, the airflow generated by each cross-flow fan 30 can pass through the two parts of the condenser 21, thereby removing heat from the entire surface of the condenser 21 and improving the heat exchange efficiency of the condenser 21.

[0182] In yet another example, refer to Figure 5 and Figure 6 There are also two condensers 21 and two cross-flow fans 30. The arrangement of the two condensers 21 is the same as... Figure 9 The condenser 21 in the embodiment is arranged in the same way, except that the two cross-flow fans 30 are arranged along the axial direction X (height direction of the housing 10) with the cross-flow impeller 31 coaxial. The inlet of each cross-flow fan 30 can be symmetrically arranged with respect to the middle surface O.

[0183] In yet another example, refer to Figure 5 and Figure 7 The condenser 21 is configured as one unit, and the cross-flow fan 30 is configured as two units. The configuration of the condenser 21 is the same as... Figure 10 The condenser 21 in the embodiment is arranged in the same way, except that the two cross-flow fans 30 are arranged along the axial direction X (height direction of the housing 10) with the cross-flow impeller 31 coaxial. The inlet of each cross-flow fan 30 can be symmetrically arranged with respect to the middle surface O.

[0184] In this embodiment, compared to the axial flow fan, the cross-flow fan 30 generates a more uniform and efficient airflow during operation, which can reduce noise and improve the heat exchange efficiency of the condenser 21. In addition, by changing the shape of the condenser 21, the heat exchange area of ​​the condenser 21 can be increased. Furthermore, by setting the leeward side 21a of the condenser 21 to be symmetrical and setting the multiple cross-flow fans 30 to be symmetrical, the inlet of each cross-flow fan 30 can correspond to different positions of the condenser 21, so that the area of ​​airflow flowing through the condenser 21 is larger and more uniform, thereby removing more heat from the condenser 21 and thus improving the heat exchange efficiency of the condenser.

[0185] A second aspect of this application provides an energy storage device 1000, see [link to previous document]. Figure 1It includes: an energy storage box 110, which houses at least one battery device 120; and a heat exchange device 100 as mentioned in any of the above embodiments, which is used to exchange heat with the battery device 120.

[0186] The battery device 120 can exchange heat with the heat exchange device 100 via a thermal management component. For example, see [reference]. Figure 12 The thermal management component includes a heat exchange medium circulation pipeline 131, and may also include a circulation pump 132 for driving the circulation of the heat exchange medium within the heat exchange medium circulation pipeline 131. The battery device 120 exchanges heat with the heat exchange device 100 through the heat exchange medium in the heat exchange medium circulation pipeline 131. In a specific embodiment, the heat exchange medium circulation pipeline 131 is provided with a liquid cooling plate 133, which is in contact with or close to the battery cells in the battery device 120 to facilitate heat transfer. The heat exchange medium circulation pipeline 131 is connected to the liquid cooling channel of the evaporator 23. The heat exchange medium, after being cooled by the evaporator 23, flows through the heat exchange medium circulation pipeline 131 to the liquid cooling plate 133, thereby directly exchanging heat with the battery device 120 through the liquid cooling plate 133. Of course, the battery device 120 can also directly exchange heat with the heat exchange medium circulation pipeline through heat transfer.

[0187] The heat exchange medium can be liquid, gaseous, or a phase change material. Specific examples of heat exchange media include ethylene glycol or water.

[0188] In some embodiments, the heat exchange device 100 is disposed inside the energy storage box 110, and the energy storage box 110 is provided with an exhaust port 111 communicating with the air outlet 12. Figure 1 (as shown) and the air inlet 112 connected to the air inlet 11 (as shown) Figure 1 (As shown). External airflow enters the housing 10 through the air inlet 112 and the air inlet 11 of the heat exchange device 100. After exchanging heat with the condenser 21, it is discharged from the air outlet 12 of the heat exchange device 100 and finally discharged outside the energy storage box 110 through the exhaust port 111.

[0189] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A heat exchange device for an energy storage device, characterized in that, include: The housing includes an inner cavity and an air inlet and an air outlet communicating with the inner cavity; A heat exchange assembly includes an evaporator and at least one condenser, the evaporator and the condenser being disposed in the inner cavity, the condenser being located between the air inlet and the air outlet, and the condenser being closer to the air outlet side than the evaporator; Multiple cross-flow fans, each of which includes a rotatable cross-flow impeller, each of which is located in the inner cavity and between the condenser and the air outlet, the multiple cross-flow fans are arranged in a row and the axis of rotation of each of the cross-flow impellers is in the same direction.

2. The heat exchange device according to claim 1, characterized in that, Of the plurality of cross-flow fans, at least two of the cross-flow fans are arranged along the axial direction with the cross-flow impellers coaxial, and the axial direction is parallel to the plane where the air outlet is located.

3. The heat exchange device according to claim 1 or 2, characterized in that, Of the plurality of cross-flow fans, at least two of the cross-flow fans are arranged side by side with the cross-flow impellers along a first direction, the first direction being perpendicular to the axial direction and parallel to the plane where the air outlet is located.

4. The heat exchange device according to any one of claims 1 to 3, characterized in that, The air outlet is elongated, and the axial direction is consistent with the length direction of the air outlet.

5. The heat exchange device according to any one of claims 1 to 4, characterized in that, Each of the cross-flow fans includes a fan casing, each fan casing houses its own cross-flow impeller, and an airflow channel is formed between the fan casing and the cross-flow impeller, with each airflow channel being independent of the others.

6. The heat exchange device according to claim 3, characterized in that, The plurality of said cross-flow fans include at least one pair of cross-flow fans arranged along the first direction. In the pair of cross-flow fans, each cross-flow fan includes a fan casing, each fan casing housing its respective cross-flow impeller, and an airflow channel is formed between the fan casing and the cross-flow impeller, with each airflow channel being independent of the others. The fan casing has an inner guide surface on the side facing the airflow channel. In the pair of cross-flow fans, the cross-flow impeller and the inner guide surface of one cross-flow fan are arranged as a mirror image of the cross-flow impeller and the inner guide surface of the other cross-flow fan.

7. The heat exchange device according to claim 6, characterized in that, The inner guide surface includes a first guide surface and a second guide surface. The first guide surface includes an arc-shaped guide surface, and the second guide surface includes an oblique guide surface, wherein the oblique guide surface is configured to be closer to the first guide surface the closer it is to the air outlet.

8. The heat exchange device according to any one of claims 5 to 7, characterized in that, The condenser includes a windward side and a leeward side, with the leeward side facing the cross-flow impeller. Of the windward side and the leeward side, at least the leeward side is formed such that the closer it is to the middle surface, the further away it is from the air outlet, and the middle surface is an imaginary plane that perpendicularly bisects the air outlet.

9. The heat exchange device according to claim 8, characterized in that, The leeward side of the condenser is symmetrical about the mid-face.

10. The heat exchange device according to claim 8 or 9, characterized in that, Of the windward side and the leeward side, at least the leeward side includes an arc surface or an inclined surface that is inclined relative to the intermediate surface.

11. The heat exchange device according to claim 10, characterized in that, The heat exchange assembly includes two condensers, the leeward side of each condenser is formed as an inclined surface, and the two condensers are connected to each other at their closest ends.

12. The heat exchange device according to claim 10, characterized in that, The heat exchange assembly includes a condenser, the leeward side of which is formed as an arc surface or an inclined surface.

13. The heat exchange device according to any one of claims 5 to 10, characterized in that, The airflow channel includes an inlet and an outlet, and the projections of the inlets of each cross-flow fan onto the leeward side of the condenser along a second direction do not overlap with each other, the second direction being perpendicular to the axial direction.

14. The heat exchange device according to claim 13, characterized in that, The heat exchange assembly includes two or more condensers connected together, the condensers are arranged along a first direction, the projection of the inlet of each cross-flow fan corresponds one-to-one with the leeward side of each condenser, and the first direction is perpendicular to the second direction and the axial direction.

15. The heat exchange device according to any one of claims 1 to 14, characterized in that, The closest distance between the rim of the cross-flow impeller and the leeward side of the condenser is greater than or equal to 5 mm.

16. The heat exchange device according to any one of claims 1 to 15, characterized in that, The cross-flow fan and the condenser are located near the air outlet.

17. The heat exchange device according to any one of claims 1 to 16, characterized in that, The housing includes a first housing wall and a second housing wall opposite each other along a first direction, the air outlet is located between the first housing wall and the second housing wall, and the condenser is connected to the first housing wall and the second housing wall at both ends along a second direction, respectively.

18. The heat exchange device according to claim 17, characterized in that, Along the second direction, a sealing element is provided between one end of the condenser and the first shell wall, and between the other end of the condenser and the second shell wall.

19. The heat exchange device according to any one of claims 1 to 18, characterized in that, The heat exchange assembly also includes a compressor, an evaporator, and an expansion valve, which are connected by a refrigerant circulation pipeline.

20. An energy storage device, characterized in that, include: An energy storage box that houses at least one battery device; The heat exchange device according to any one of claims 1 to 19, wherein the heat exchange device is used for heat exchange with the battery device.

21. The energy storage device according to claim 20, characterized in that, The heat exchange device is installed inside the energy storage box, which has an exhaust port connected to the air outlet and an air inlet connected to the air inlet.

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