Energy storage system

Abstract

The utility model relates to an energy storage system which comprises an energy storage box and a plurality of heat dissipation assemblies, each heat dissipation assembly comprises at least one air outlet, at least multiple heat dissipation assemblies in all the heat dissipation assemblies are stacked, and the ventilation direction of the air outlets intersects with the stacking direction of the at least multiple heat dissipation assemblies. The multiple heat dissipation assemblies are stacked, concentrated heat dissipation and noise reduction of the heat dissipation assemblies are facilitated, noise reduction of all the heat dissipation assemblies is not needed, needed noise reduction components are reduced, and cost is saved. The energy storage system can achieve concentrated heat dissipation and concentrated noise reduction, and compared with separated noise reduction of a heat dissipation assembly, the energy storage system is beneficial to reducing noise reduction cost.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to an energy storage system. Background Art

[0002] Energy storage containers are highly integrated and generate a lot of heat, requiring radiators to dissipate heat and prevent overheating to ensure stable operation. However, current heat dissipation and noise reduction systems for energy storage containers are expensive. Summary of the Invention

[0003] Based on this, it is necessary to provide an energy storage system to address the problem of high heat dissipation and noise reduction costs of current energy storage containers.

[0004] According to one aspect of the present application, there is provided an energy storage system, comprising:

[0005] Energy storage tank; and

[0006] A plurality of heat dissipation components are provided on one side of the energy storage box;

[0007] The heat dissipation component includes at least one air outlet, at least a plurality of the heat dissipation components among all the heat dissipation components are stacked, and the ventilation direction of the air outlet intersects with the stacking direction of at least a plurality of the heat dissipation components.

[0008] In one embodiment, the energy storage box has a bottom wall and a top wall opposite to each other along a first direction, and a side wall connected between the bottom wall and the top wall;

[0009] The heat dissipation component is arranged on one side of the top wall; or, the heat dissipation component is arranged on one side of the side wall.

[0010] In one embodiment, all the heat dissipation components are stacked along the first direction to form a first heat dissipation component stack;

[0011] The energy storage system includes a plurality of energy storage boxes, which are arranged around the first heat dissipation component stack.

[0012] In one embodiment, a plurality of the heat dissipation components are provided corresponding to one energy storage box, and the plurality of heat dissipation components corresponding to one energy storage box are stacked along the first direction to form a second heat dissipation component stack;

[0013] The second heat dissipation component stack is located on one side of the side wall of the energy storage box.

[0014] In one embodiment, a plurality of the heat dissipation assemblies are stacked along the third direction to form a third heat dissipation assembly stack, all the heat dissipation assemblies form a plurality of the third heat dissipation assembly stacks, and the plurality of the third heat dissipation assembly stacks are spaced apart along the second direction, and all the heat dissipation assemblies are arranged on one side of the top wall of the energy storage box;

[0015] The ventilation direction of the air outlet of each heat dissipation component intersects with both the second direction and the third direction.

[0016] In one embodiment, the energy storage system further includes a battery and a first heat exchanger disposed in the energy storage box;

[0017] The heat dissipation assembly further includes a second heat exchanger and an airflow generating device, wherein the second heat exchanger can be connected to the first heat exchanger to form a circulation loop, and a heat exchange medium is provided in the circulation loop, and the heat exchange medium is configured to exchange heat with the battery;

[0018] The airflow generating device is configured to guide the airflow to flow through the second heat exchanger to exchange heat with the heat exchange medium in the second heat exchanger.

[0019] In one embodiment, the heat dissipation assembly includes a plurality of second heat exchangers and a plurality of airflow generating devices;

[0020] Each of the airflow generating devices is arranged corresponding to at least one of the second heat exchangers.

[0021] In one embodiment, the heat dissipation assembly further comprises a housing, and the second heat exchanger and the airflow generating device are both disposed in the housing;

[0022] The housing is provided with an air inlet and an air outlet which are communicated with each other, the second heat exchanger is at least partially arranged opposite to the air inlet, and the airflow generating device is installed at the air outlet.

[0023] In one embodiment, the air inlet is provided with an air inlet guide plate, one end of the air inlet guide plate is connected to the edge of the air inlet, and the other end extends out of the housing, or the other end extends into the housing; and / or

[0024] The air outlet is provided with an air outlet guide plate, one end of the air outlet guide plate is connected to the edge of the air outlet, and the other end extends out of the shell, or the other end extends into the shell.

[0025] In one embodiment, the energy storage system further includes a noise reduction device;

[0026] The plurality of stacked heat dissipation components share one noise reduction device.

[0027] The energy storage system provided by the present application facilitates centralized heat dissipation and noise reduction of the heat dissipation components by stacking multiple heat dissipation components. There is no need to perform noise reduction on each heat dissipation component separately, which reduces the required noise reduction components and helps save costs. Furthermore, the ventilation direction of the air outlets of the heat dissipation components is arranged to intersect with the stacking direction, so that adjacent heat dissipation components do not block each other's air outlets, and do not affect the normal ventilation and heat dissipation of the heat dissipation components. That is, the energy storage system of the present application can achieve centralized heat dissipation and centralized noise reduction, which is relatively convenient for saving noise reduction costs compared to separate noise reduction of heat dissipation components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of the energy storage box and the heat dissipation assembly in one embodiment of the present application is shown.

[0029] Figure 2 A top view of an energy storage system in one embodiment of the present application is shown.

[0030] Figure 3 A schematic structural diagram of an energy storage box and a heat dissipation assembly in another embodiment of the present application is shown.

[0031] Figure 4 A side view of an energy storage system in one embodiment of the present application is shown.

[0032] Figure 5 A top view of an energy storage system in another embodiment of the present application is shown.

[0033] Figure 6 A schematic structural diagram of a heat dissipation assembly in one embodiment of the present application is shown.

[0034] Figure 7 A schematic diagram of the structure of stacking multiple heat dissipation components in one embodiment of the present application is shown.

[0035] Description of Figure Numbers:

[0036] 1. Energy storage system;

[0037] 10. Energy storage box; 11. Bottom wall; 12. Top wall; 13. Side wall;

[0038] 20. Heat dissipation assembly; 21. Airflow generating device; 22. Second heat exchanger; 20a. First heat dissipation assembly stack; 20b. Second heat dissipation assembly stack; 20c. Third heat dissipation assembly stack; 23. Housing; 231. Housing top wall; 232. Housing side wall; 233. Housing bottom wall;

[0039] 30. Pipeline;

[0040] 40. Support frame;

[0041] X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0042] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0045] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0048] As demand for energy storage systems increases, they require a compact footprint, high power density, and portability. This is why energy storage containers have emerged. These systems combine battery systems, AC / DC converters, and monitoring systems within one or more standard containers. These integrated systems are delivered to users as a single unit, making them easy to transport and install.

[0049] Since the energy storage container has a high degree of integration and generates a lot of heat, a radiator needs to be installed to dissipate heat in order to ensure its stable operation.

[0050] Current energy storage containers, designed to facilitate land and sea transportation, are often constructed using standard container dimensions. This limits the size of the radiator integrated into the container to a specific, narrow range. The noise level of a radiator is inversely proportional to its size, resulting in relatively high noise levels during energy storage operations.

[0051] In some areas, due to land restrictions, the construction of energy storage containers is inevitably close to residential areas, resulting in a large amount of noise generated during the energy storage process of the energy storage containers, which interferes with residents' lives.

[0052] To address the noise interference issue, the industry usually adds noise reduction components to noisy areas of energy storage containers, or adds noise reduction components to the entire project site. Although this method can achieve a certain degree of noise reduction effect, adding noise reduction components to energy storage containers alone will complicate the product structure design, and adding noise reduction components to the entire project site will increase customer costs.

[0053] To solve the above problems, the present application provides an energy storage system. By independently installing or placing the heat dissipation assembly outside the energy storage box, the size of the heat dissipation assembly is not limited by the size of the energy storage box, and the size of the heat dissipation assembly can be flexibly selected according to the heat dissipation and noise reduction requirements. At the same time, by stacking multiple heat dissipation assemblies, centralized heat dissipation and noise reduction of the heat dissipation assembly are facilitated, and there is no need for each heat dissipation assembly to reduce noise separately, reducing the required noise reduction components and helping to save costs. The ventilation direction of the air outlet of the heat dissipation assembly is arranged to intersect with the stacking direction, so that adjacent heat dissipation assemblies will not block each other's air outlets and will not affect the normal ventilation and heat dissipation of the heat dissipation assembly. In this way, the size of the heat dissipation assembly can be increased while the size of the energy storage box remains unchanged, thereby reducing noise while ensuring heat dissipation performance, and the structure is simple and the cost is low. That is, the energy storage system of the present application can achieve centralized heat dissipation and centralized noise reduction, which is beneficial to saving noise reduction costs compared to separate noise reduction of the heat dissipation assembly.

[0054] Figure 1 A schematic structural diagram of the energy storage box and the heat dissipation assembly in one embodiment of the present application is shown. Figure 2 A top view of an energy storage system in one embodiment of the present application is shown.

[0055] See Figure 1 and Figure 2 An embodiment of the present application provides an energy storage system 1, which can be applied to but is not limited to scenarios such as peak shaving and valley filling of grid power and improvement of power quality.

[0056] Energy storage system 1 includes an energy storage box 10 and multiple heat dissipation assemblies 20. Specifically, energy storage box 10 comprises a housing and a battery system housed therein. The battery system may include a single cell or a battery pack composed of multiple cells. Heat dissipation assemblies 20 are located outside energy storage box 10, so that their size is not limited by the size of the energy storage box 10.

[0057] The heat dissipation assembly 20 is arranged outside the energy storage box 10. Specifically, the heat dissipation assembly 20 can be placed directly on the top of the energy storage box 10, the heat dissipation assembly 20 can be placed close to the energy storage box 10 and next to the energy storage box 10, or the heat dissipation assembly 20 can be placed at intervals next to the energy storage box 10.

[0058] Furthermore, when the heat dissipation assembly 20 is placed on top of the energy storage box 10, it is possible to choose whether to fix the heat dissipation assembly 20 to the energy storage box 10 based on the environment in which the energy storage system 1 is located. For example, in areas prone to earthquakes, an additional fixing structure, such as a bolt fixing structure, can be added to fix the heat dissipation assembly 20 to the top of the energy storage box 10 to improve safety in special circumstances such as earthquakes.

[0059] Based on this, the size of the heat dissipation component 20 can be selected more flexibly. When the size of the energy storage box 10 remains unchanged, a large-sized heat dissipation component 20 can be selected to improve the heat dissipation effect.

[0060] It is understandable that the independence of the heat dissipation assembly 20 and the energy storage box 10 means that, on the one hand, there is no need to set up a mounting structure on the energy storage box 10 specifically for installing the heat dissipation assembly 20, nor is there any need to reserve installation space for the heat dissipation assembly 20. The project site can select the placement position of the heat dissipation assembly 20 based on the spatial conditions on and around the energy storage box 10, and can further choose whether to further fix the heat dissipation assembly 20 at this position based on the on-site geographical environment conditions.

[0061] Furthermore, the size of the heat dissipation assembly 20 no longer has to be smaller than that of the energy storage box 10. Project sites can flexibly select the size and model of the heat dissipation assembly 20 based on heat dissipation and noise reduction requirements. For example, if the energy storage box 10 is a standard container, the shape and size of the heat dissipation assembly 20 are consistent with those of the standard container. This allows the heat dissipation assembly 20 to be stacked into a standard container during transportation, achieving low-cost transportation.

[0062] Continue reading Figure 1 and Figure 2 The heat dissipation assembly 20 includes at least one air outlet. At least a plurality of the heat dissipation assemblies 20 are stacked, and the ventilation direction of the air outlet intersects the stacking direction of at least a plurality of the heat dissipation assemblies 20. This facilitates centralized heat dissipation and noise reduction for the heat dissipation assemblies 20 by stacking the plurality of heat dissipation assemblies 20, eliminating the need for separate noise reduction for each heat dissipation assembly 20. This reduces the number of noise reduction components and helps save costs. Furthermore, by arranging the ventilation direction of the air outlets of the heat dissipation assemblies 20 to intersect the stacking direction, adjacent heat dissipation assemblies 20 do not block each other's air outlets, thereby maintaining normal ventilation and heat dissipation of the heat dissipation assemblies 20.

[0063] It can be understood that the energy storage system 1 of the present application can achieve centralized heat dissipation and centralized noise reduction, and the noise reduction of the heat dissipation component 20 is separate. The present application is conducive to saving noise reduction costs.

[0064] In some implementations, such as Figure 1 The energy storage box 10 has a bottom wall 11 and a top wall 12 facing each other along a first direction X, and a side wall 13 connected between the bottom wall 11 and the top wall 12. The heat dissipation assembly 20 is provided on one side of the top wall; alternatively, the heat dissipation assembly 20 is provided on one side of the side wall.

[0065] In some embodiments, the heat dissipation assembly 20 is disposed outside the top wall 12, or the heat dissipation assembly 20 is disposed outside the side wall 13. It will be appreciated that the first direction X can specifically be a vertical direction, i.e., the height direction of the energy storage box 10. Taking into account possible dimensional errors in the manufacturing process of the energy storage box 10, when the first direction X is tilted at an angle within the error range relative to the vertical direction, the first direction X can also be considered to be the height direction of the energy storage box 10.

[0066] Based on this, by arranging the heat dissipation assembly 20 on the outside of the top wall 12 as external heat dissipation, for example, directly placing the heat dissipation assembly 20 on the top wall 12, or placing the heat dissipation assembly 20 on the top wall 12 and fixing it, it is possible to dissipate heat for the energy storage box 10 while fully utilizing the space in the height direction of the energy storage box 10, thereby facilitating a reduction in the footprint of the energy storage system 1. When the size of the energy storage box 10 remains unchanged, a large-sized heat dissipation assembly 20 can be selected to reduce the noise of the selected heat dissipation assembly 20, thereby achieving the effect of taking into account both heat dissipation and noise reduction requirements in a simple structure and low-cost manner.

[0067] Alternatively, the heat sink assembly 20 may be disposed outside the side wall 13, thereby providing greater flexibility in the model selection and arrangement of the heat sink assembly 20. In this manner, a large heat sink assembly 20 may be selected, thereby reducing noise. This achieves both heat dissipation and noise reduction requirements with a simple structure and low cost.

[0068] See Figure 3 Optionally, when the heat dissipation assembly 20 is arranged on the outside of the top wall 12, the heat dissipation assembly 20 can be placed directly on the top wall 12, or it can be placed on the top wall 12 and fixed by a fixing structure such as bolts. It is also possible to place a support frame 40 or other structure on the top wall 12 and then install the heat dissipation assembly 20 on the support frame 40, so as to achieve the effect of raising the heat dissipation assembly 20, thereby improving the design flexibility of the air outlet direction of the heat dissipation assembly 20.

[0069] Optionally, when the heat dissipation assembly 20 is placed on top of the energy storage box 10 , the heat dissipation assembly 20 may directly contact the top wall of the energy storage box 10 , or may not directly contact the top wall of the energy storage box 10 .

[0070] See Figure 1 In some embodiments, the heat dissipation assembly 20 is placed on the top wall 12. In this way, the model selection of the heat dissipation assembly 20 is more flexible and the arrangement is simpler.

[0071] Optionally, the orthographic projection of the heat dissipation assembly 20 along the first direction X is located within the orthographic projection of the energy storage box 10 along the first direction X. In this way, the arrangement of the heat dissipation assembly 20 does not increase the floor space of the energy storage system 1 .

[0072] Continue reading Figure 1 Furthermore, the orthographic projection of the heat dissipation assembly 20 along the first direction X coincides with the orthographic projection of the energy storage box 10 along the first direction X. It will be understood that due to product manufacturing errors, the situation where the orthographic projection of the heat dissipation assembly 20 along the first direction X completely coincides with the orthographic projection of the energy storage box 10 along the first direction X is an ideal situation. In actual application, when the degree of coincidence between the orthographic projection of the heat dissipation assembly 20 along the first direction X and the orthographic projection of the energy storage box 10 along the first direction X reaches an expected range, it can be considered that the orthographic projection of the heat dissipation assembly 20 along the first direction X coincides with the orthographic projection of the energy storage box 10 along the first direction X. The expected range of this degree of coincidence can be set according to the dimensional tolerance range of a standard container.

[0073] Based on this, the size of the heat dissipation assembly 20 is maximized without increasing the footprint of the energy storage system 1, thereby improving noise reduction. Furthermore, because the orthographic projection of the heat dissipation assembly 20 along the first direction X coincides with the orthographic projection of the energy storage box 10 along the first direction X, the heat dissipation assembly 20 can be stacked into a standard box during transportation, achieving low-cost transportation.

[0074] The dimensions of the standard box can refer to the dimensions of standard containers in international standards and will not be repeated here.

[0075] In other embodiments, depending on noise reduction requirements and site layout conditions, the orthographic projection of the heat dissipation assembly 20 along the first direction X can be set to be larger than the orthographic projection of the energy storage box 10 along the first direction X. In this way, if site conditions permit, the size of the heat dissipation assembly 20 can be further increased, thereby further improving the heat dissipation effect.

[0076] Figure 4 A side view of an energy storage system in one embodiment of the present application is shown. Figure 5 A top view of an energy storage system in another embodiment of the present application is shown.

[0077] See also Figure 4 and Figure 5 In some embodiments, the heat dissipation assembly 20 is placed outside the side wall 13. For example, the heat dissipation assembly 20 is placed against the outer surface of the side wall 13, or the heat dissipation assembly 20 is placed at a certain distance from the side wall 13. The distance between the heat dissipation assembly 20 and the side wall 13 can be flexibly adjusted according to the site conditions of the project. For example, the distance is 30 cm, 40 cm, or 50 cm to facilitate maintenance work by staff.

[0078] See Figure 3 、 Figure 4 and Figure 5As shown, the energy storage system 1 includes multiple heat dissipation assemblies 20, at least some of which are stacked. Optionally, the number of heat dissipation assemblies 20, i.e., the number of stacked layers, can be two, three, four, five, six, or more. This increases the number of heat dissipation assemblies 20 while ensuring a small footprint for the energy storage system 1, thereby improving heat dissipation performance.

[0079] Specifically, the stacked heat dissipation components 20 can be stacked as follows: Figure 4 As shown in FIG. 1 , a heat dissipation assembly stack along the first direction X, for example, parallel to the height direction of the energy storage box 10, can also be stacked as shown in FIG. Figure 3 Furthermore, when stacking multiple heat dissipation component stacks, in order to minimize the floor space, the multiple heat dissipation component stacks can be stacked side by side.

[0080] Furthermore, the energy storage system 1 includes multiple groups of heat dissipation components 20 and multiple energy storage boxes 10, wherein at least some of the heat dissipation components are stacked, and each energy storage box 10 is provided with at least one group of heat dissipation components 20, so as to fully dissipate the heat of each energy storage box 10 and ensure a good heat dissipation effect.

[0081] Optionally, the multiple energy storage boxes 10 are of equal size, which facilitates stacking and transportation of the energy storage boxes 10 .

[0082] See Figure 5 In some embodiments, the energy storage system 1 includes multiple heat dissipation assemblies 20 and multiple energy storage tanks 10. All heat dissipation assemblies are stacked along a first direction X to form a first heat dissipation assembly stack 20a. Multiple energy storage tanks 10 are arranged around the first heat dissipation assembly stack 20a. This allows for centralized layout of the heat dissipation assemblies 20 corresponding to the multiple energy storage tanks 10, resulting in unified heat dissipation.

[0083] For example, when the orthographic projection of the heat dissipation assembly 20 along the height direction is a rectangle, the orthographic projection of the first heat dissipation assembly stack 20a formed by stacking all the heat dissipation assemblies 20 along the height direction is also a rectangle. Based on this, multiple energy storage boxes 10 are arranged around the first heat dissipation assembly stack 20a, so that the multiple energy storage boxes 10 and the first heat dissipation assembly stack 20a are arranged in an array, forming an arrangement with the heat dissipation assembly 20 in the center and the energy storage boxes 10 surrounding them. Based on this, the first heat dissipation assembly stack 20a of different heights can be customized based on the performance, power consumption, noise requirements, and other factors of the energy storage system 1, without occupying additional land area for the customer.

[0084] See Figure 4In some embodiments, multiple heat dissipation assemblies 20 are provided for each energy storage box 10, and these assemblies are stacked along a first direction X to form a second heat dissipation assembly stack 20b. The second heat dissipation assembly stack 20b is located on one side of the energy storage box 10. Therefore, the second heat dissipation assembly stack 20b can be placed in a fixed area on-site, with air flow directed sideways. If the air duct is adjusted by partially raising the stack or adding air guides, the air flow can also be directed topward or bottomward.

[0085] Combine Figure 1 and Figure 2 In an exemplary embodiment, the energy storage system 1 includes multiple energy storage boxes 10 and multiple groups of heat dissipation components 20. The multiple heat dissipation components 20 are stacked along the third direction Z to form a third heat dissipation component stack 20c. All the heat dissipation components 20 form multiple third heat dissipation component stacks 20c, and the multiple third heat dissipation component stacks 20c are arranged at intervals along the second direction Y. All the heat dissipation components 20 are arranged on one side of the top wall of the energy storage box. The ventilation direction of the air outlet of each heat dissipation component 20 intersects with both the second direction Y and the third direction Z, and as shown in FIG. Figure 1 and Figure 2 In the embodiment, the second direction Y and the third direction Z are both parallel to the top wall of the energy storage box, and the first direction X intersects with the top wall of the energy storage box.

[0086] It is understandable that Figure 2 All heat dissipation assemblies 20 are arranged in an array on the top wall of the energy storage box 10. For example, multiple energy storage boxes 10 are arranged in three rows, with four energy storage boxes 10 in each row. A corresponding set of heat dissipation assemblies 20 is placed on the top of each energy storage box 10. The orthographic projection of each heat dissipation assembly 20 along the height direction coincides with the orthographic projection of the corresponding energy storage box 10 along the height direction. The heat dissipation assemblies 20 can be directed from the top or the side. This results in a smaller footprint for the energy storage system 1, better heat dissipation performance, and lower noise levels.

[0087] In other embodiments, multiple energy storage tanks 10 are stacked in the height direction to form an energy storage tank group. Each energy storage tank group corresponds to one second heat dissipation assembly stack 20b. The energy storage tank group and the second heat dissipation assembly stack 20b are arranged side by side and connected by a pipe 30. This reduces the footprint of the energy storage tank 10 and the footprint of the heat dissipation assembly 20, thereby reducing the overall footprint of the energy storage system 1.

[0088] In some embodiments, the energy storage system 1 further includes a noise reduction device, which is shared by multiple stacked heat dissipation assemblies 20. Therefore, when multiple heat dissipation assemblies 20 are centrally arranged, noise reduction can be performed on the stacked heat dissipation assemblies 20. This reduces the number of points requiring noise reduction, simplifies the product structure design, and reduces costs.

[0089] Optionally, the noise reduction device includes a noise reduction channel with openings at both ends. The noise reduction channel includes at least two expansion cavities along its extension direction. Noise can enter through the opening at one end of the noise reduction channel, and the noise reduction channel forms at least two expansion cavities along its extension direction from one end to the other end. That is, the cross-sectional area of ​​at least two sections of the noise reduction channel is larger than the cross-sectional area of ​​other sections of the noise reduction channel. This creates a sudden change in the cross-sectional area at the junction of the expansion cavity of the noise reduction channel and other sections of the noise reduction channel, thereby causing an impedance mismatch in the noise wave, resulting in reflection and attenuation of the noise intensity, thereby achieving noise reduction.

[0090] When the noise reduction device is used in the energy storage system 1, the inlet of the noise reduction channel can be arranged toward a noisier portion of the heat dissipation component 20, such as an air outlet, to achieve a good noise reduction effect.

[0091] When multiple heat dissipation components 20 share one noise reduction device, the inlet of the noise reduction channel can be set close to one or more air outlets, so as to reduce the noise of multiple heat dissipation components 20 placed together with a limited number of noise reduction devices.

[0092] Continue reading Figure 1 and Figure 2 In some embodiments, the heat dissipation assembly 20 includes a plurality of airflow generating devices 21 such as a negative pressure unit or a fan, and the plurality of airflow generating devices 21 are used to accelerate heat dissipation, thereby improving the heat dissipation effect.

[0093] Optionally, the energy storage box 10 has a bottom wall 11 and a top wall 12 that are opposite to each other along a first direction X, and a side wall 13 connected between the bottom wall 11 and the top wall 12. Multiple airflow generating devices 21 are evenly spaced along the orthographic projection of the first direction X. For example, the multiple airflow generating devices 21 are arranged in a row, or in an array. In this way, the simultaneous operation of multiple airflow generating devices 21 can improve heat dissipation performance, and evenly spaced arrangement of multiple airflow generating devices 21 can achieve more uniform heat dissipation performance across various locations.

[0094] For example, when the heat dissipation assembly 20 is placed vertically and its projection along the vertical direction is a rectangle, multiple airflow generating devices 21 can be arranged in rows along the long side of the rectangle, or in rows along the diagonal direction of the rectangle, or in arrays according to the long side and short side directions of the rectangle, thereby increasing the arrangement density of the airflow generating devices 21 within a limited space and thereby improving the heat dissipation effect.

[0095] Figure 6 A schematic structural diagram of a heat dissipation assembly in one embodiment of the present application is shown. Figure 7 A schematic diagram of the structure of stacking multiple heat dissipation components in one embodiment of the present application is shown. Figure 6 and Figure 7 The hollow arrow in the middle points to the air outlet direction.

[0096] See Figure 6 and Figure 7 In some embodiments, the energy storage system 1 further includes batteries and a first heat exchanger (not shown) within the energy storage box 10. The heat dissipation assembly 20 further includes a second heat exchanger 22, which can be connected to the first heat exchanger to form a circulation loop. A heat exchange medium is provided within the circulation loop and is configured to exchange heat with the batteries. The airflow generating device 21 is configured to direct airflow through the second heat exchanger 22 to exchange heat with the heat exchange medium within the second heat exchanger 22. The structure, materials, and principles of the first and second heat exchangers, as well as the heat exchange medium, can be found in related liquid cooling and heat exchange technologies and will not be further elaborated here.

[0097] Based on this, the heat exchange medium in the first heat exchanger exchanges heat with the battery when flowing through the area where the battery is located, so that the battery is cooled down. The high-temperature heat exchange medium after heat exchange circulates to the second heat exchanger 22. The airflow generating device 21, such as a fan, guides the airflow, such as external air, to flow through the second heat exchanger 22, so that the high-temperature heat exchange medium is cooled down. The airflow after heat exchange with the heat exchange medium flows out of the energy storage system 1 under the guidance of the airflow generating device 21, thereby realizing heat dissipation of the energy storage system 1.

[0098] Optionally, when the heat dissipation assembly 20 and the energy storage box 10 are spaced apart, the shells therebetween are connected by a pipe 30 , so that the second heat exchanger 22 can be connected to the first heat exchanger to form a circulation loop.

[0099] Optionally, the heat dissipation assembly 20 includes multiple second heat exchangers 22, and each airflow generating device 21 is provided with at least one second heat exchanger 22. In this way, the airflow generated by the airflow generating device 21 is fully utilized to dissipate heat from the second heat exchanger 22, thereby improving energy utilization.

[0100] Optionally, the airflow generating device 21 and the second heat exchanger 22 may be arranged in sequence along the first direction X (see Figure 6 ), or they may be arranged in sequence along a second direction Y intersecting the first direction X (see Figure 7 The first direction X can specifically be the height direction of the energy storage box 10, and the second direction Y can specifically be perpendicular to the first direction X. The airflow direction of the airflow generating device 21 intersects the plane where the second heat exchanger 22 is located. In this way, the airflow guided by the airflow generating device 21 can more fully interact with the second heat exchanger 22, thereby more effectively cooling the second heat exchanger 22.

[0101] Optionally, the heat dissipation assembly 20 further includes a housing 23, within which the second heat exchanger 22 and the airflow generating device 21 are both disposed. The housing 23 is provided with an air inlet and an air outlet (not shown) that communicate with each other. The second heat exchanger 22 is at least partially positioned opposite the air inlet, and the airflow generating device 21 is mounted at the air outlet. This allows the airflow directed by the airflow generating device 21 to flow in a more concentrated direction, thereby improving heat dissipation efficiency.

[0102] Optionally, the housing 23 includes a top wall 231 and a bottom wall 233 that oppose each other along a first direction X, as well as a side wall 232 connecting the top wall 231 and the bottom wall 233. The air inlet may be located on the top wall 231, the bottom wall 233, or the side wall 232, and the air outlet may be located on the top wall 231, the bottom wall 233, or the side wall 232. Thus, the housing 23, the air inlet, and the air outlet define an air duct for airflow. Thus, a variety of air duct designs can be adopted for the heat dissipation assembly 20 depending on the project site conditions. For example, air outlet directions may include front, rear, left, right, top, and bottom outlets, and air inlet directions may include front, rear, left, right, top, and bottom inlets. This allows for flexible arrangement of air outlet directions to achieve better heat dissipation.

[0103] When the heat dissipation assembly 20 is a single-layer structure, it can adopt a top-out design, such as front-in, left-in, or right-in, with the air outlet located on the top wall. Furthermore, when the heat dissipation assembly 20 adopts a top-out design, it is not limited to being placed on top of the energy storage box 10; the heat dissipation assembly 20 can also be placed independently at the project site.

[0104] Optionally, the energy storage system 1 further includes a support frame 40 , on which the heat dissipation assembly 20 is disposed, and the support frame 40 and the heat dissipation assembly 20 are arranged along the first direction X. In this way, the heat dissipation assembly 20 can be raised so that the bottom of the heat dissipation assembly 20 is suspended, thereby facilitating a bottom air outlet design of the heat dissipation assembly 20 .

[0105] In some embodiments, the air inlet is provided with an air inlet guide plate, one end of which is connected to the edge of the air inlet and the other end of which extends outward from the housing, or alternatively, into the housing. The air inlet guide plate may extend perpendicularly or obliquely relative to the wall surface where the air inlet is located. For example, when one end of the air inlet guide plate extends outward from the housing, the air inlet guide plate is inclined relative to the wall surface where the air inlet is located, forming a structure that gradually expands outward, thereby increasing the pressure of the airflow entering the housing. When one end of the air inlet guide plate extends inward from the housing, the same principle can also be used to increase the pressure of the airflow entering the housing.

[0106] In some embodiments, the air outlet is provided with an air guide plate, one end of which is connected to the edge of the air outlet and the other end of which extends outward from the housing, or alternatively, into the housing. The air guide plate can extend perpendicularly or obliquely relative to the wall surface where the air outlet is located. For example, when one end of the air guide plate extends outward from the housing, the air guide plate avoids tilting relative to the air outlet, forming a gradually expanding outward structure, thereby rapidly directing airflow out of the housing. When one end of the air guide plate extends inward from the housing, the same principle can be used to accelerate airflow out of the housing.

[0107] See Figure 1 and 6 When the heat dissipation component 20 is designed to dissipate air from the top, the airflow generating device 21 can be set above the second heat exchanger 22. Based on this, the cold air exchanges heat with the high-temperature heat exchange medium in the second heat exchanger 22 and becomes hot air. The airflow generating device 21 discharges the hot air from the top to achieve heat dissipation of the energy storage system 1.

[0108] See Figure 7 When the heat dissipation component 20 is designed to have side air outlet, for example, right air outlet, the airflow generating device 21 can be set on the right side of the second heat exchanger 22. Based on this, the cold air exchanges heat with the high-temperature heat exchange medium in the second heat exchanger 22 and becomes hot air. The airflow generating device 21 discharges the hot air from the right side to achieve heat dissipation of the energy storage system 1.

[0109] Continue reading Figure 7 Furthermore, when the heat dissipation assembly 20 is designed to have side air outlet and multiple heat dissipation assemblies 20 are stacked in the height direction, the airflow generating devices 21 of the multiple heat dissipation assemblies 20 can be arranged on the same side of the corresponding second heat exchanger 22. For example, when the airflow generating device 21 of one of the heat dissipation assemblies 20 is arranged on the right side of its second heat exchanger 22, the airflow generating devices 21 of the other heat dissipation assemblies 20 stacked in the height direction are also arranged on the right side of the corresponding second heat exchanger 22, thereby facilitating centralized heat dissipation management and making the installation and arrangement of the energy storage system 1 more convenient.

[0110] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0111] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An energy storage system, characterized in that: include: Energy storage box; as well as A plurality of heat dissipation components are provided on one side of the energy storage box; The heat dissipation component includes at least one air outlet, at least a plurality of the heat dissipation components among all the heat dissipation components are stacked, and the ventilation direction of the air outlet intersects with the stacking direction of at least a plurality of the heat dissipation components.

2. The energy storage system according to claim 1, characterized in that The energy storage box has a bottom wall and a top wall opposite to each other along a first direction, and a side wall connected between the bottom wall and the top wall; The heat dissipation component is arranged on one side of the top wall; or, the heat dissipation component is arranged on one side of the side wall.

3. The energy storage system according to claim 2, characterized in that: All the heat dissipation components are stacked along the first direction to form a first heat dissipation component stack; The energy storage system includes a plurality of energy storage boxes, which are arranged around the first heat dissipation component stack.

4. The energy storage system according to claim 2, characterized in that: A plurality of heat dissipation assemblies are correspondingly provided to one energy storage box, and the plurality of heat dissipation assemblies corresponding to one energy storage box are stacked along the first direction to form a second heat dissipation assembly stack; The second heat dissipation component stack is located on one side of the side wall of the energy storage box.

5. The energy storage system according to claim 2, characterized in that: A plurality of the heat dissipation assemblies are stacked along the third direction to form a third heat dissipation assembly stack, all of the heat dissipation assemblies form a plurality of the third heat dissipation assembly stacks, and the plurality of the third heat dissipation assembly stacks are spaced apart along the second direction, and all of the heat dissipation assemblies are arranged on one side of the top wall of the energy storage box; The ventilation direction of the air outlet of each heat dissipation component intersects with both the second direction and the third direction.

6. The energy storage system according to any one of claims 1 to 5, characterized in that: The energy storage system further includes a battery and a first heat exchanger disposed in the energy storage box; The heat dissipation assembly further includes a second heat exchanger and an airflow generating device, wherein the second heat exchanger can be connected to the first heat exchanger to form a circulation loop, and a heat exchange medium is provided in the circulation loop, and the heat exchange medium is configured to exchange heat with the battery; The airflow generating device is configured to guide the airflow to flow through the second heat exchanger to exchange heat with the heat exchange medium in the second heat exchanger.

7. The energy storage system according to claim 6, characterized in that: The heat dissipation assembly includes a plurality of second heat exchangers and a plurality of the airflow generating devices; Each of the airflow generating devices is arranged corresponding to at least one of the second heat exchangers.

8. The energy storage system according to claim 6, characterized in that: The heat dissipation assembly further includes a housing, and the second heat exchanger and the airflow generating device are both disposed in the housing; The housing is provided with an air inlet and an air outlet which are communicated with each other, the second heat exchanger is at least partially arranged opposite to the air inlet, and the airflow generating device is installed at the air outlet.

9. The energy storage system according to claim 8, characterized in that: The air inlet is provided with an air inlet guide plate, one end of the air inlet guide plate is connected to the edge of the air inlet, and the other end extends out of the housing, or the other end extends into the housing; and / or The air outlet is provided with an air outlet guide plate, one end of the air outlet guide plate is connected to the edge of the air outlet, and the other end extends out of the shell, or the other end extends into the shell.

10. The energy storage system according to claim 1, characterized in that: The energy storage system also includes a noise reduction device; The plurality of stacked heat dissipation components share one noise reduction device.

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