Distributed energy storage system

Abstract

The utility model provides a distributed energy storage system. The distributed energy storage system comprises a power supply module, a main air supply pipeline, a branch air supply pipeline, a cabinet air conditioner and a circulating pipeline. Wherein the power supply module comprises a power supply assembly and a top air duct, and the top air duct is arranged above the power supply assembly; the main air supply pipeline is connected with the branch air supply pipeline and arranged on the first side of the power supply module, and the branch air supply pipeline is arranged on the top of the power supply module and connected with a top air channel of the power supply module. A ventilation hole is formed in the top air duct, and an opening of the ventilation hole faces the power supply assembly; and the cabinet air conditioner is connected with the main air supply pipeline through a circulating pipeline. According to the system, cold air can be uniformly supplied to the upper part of each power supply module through the branch air supply pipelines, and the cold air is supplied to the power supply modules through the ventilation holes which are formed in the branch air supply pipelines and face the power supply modules, so that the effect of uniformly dissipating heat of the power supply modules in the distributed energy storage system is achieved; and the operation stability of the distributed energy storage system is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of energy storage cabinets, and particularly to a distributed energy storage system. Background Art

[0002] A distributed energy storage system can balance the power supply and demand of the power grid and improve the energy utilization efficiency. The core of the distributed energy storage system is a distributed energy storage cabinet. The energy storage unit of the distributed energy storage cabinet consists of multiple battery packs, and each battery pack consists of multiple battery cells. Since the energy storage unit of the distributed energy storage cabinet is installed in a closed cabinet, and the battery pack releases heat during discharge, it is necessary to dissipate heat from the distributed energy storage cabinet.

[0003] The distributed energy storage cabinet can adopt an air-cooling solution for heat dissipation, that is, by means of a fan or air duct design, introducing external cold air into the interior of the distributed energy storage cabinet, exchanging heat with the battery pack, and then discharging the hot air to reduce the working temperature of the battery pack and battery cells.

[0004] However, with the increase in the capacity of the energy storage unit and the improvement of the battery pack layout density, due to factors such as uneven air flow distribution, fan efficiency limitation, and occlusion between battery packs inside the cabinet, there will be a situation where the temperature of the battery packs in a specific area is higher than that of the battery packs in other areas. If the same air volume is used for heat dissipation for each area of the battery packs, it will lead to insufficient heat dissipation in the area with higher temperature battery packs, shorten the life cycle of the battery cells, and reduce the operating stability of the distributed energy storage system. Summary of the Utility Model

[0005] The present application provides a distributed energy storage system to solve the problem of insufficient heat dissipation in the area with higher temperature battery packs, resulting in low operating stability of the distributed energy storage system.

[0006] The present application provides a distributed energy storage system, including: an energy storage device, a air supply device, and a refrigeration device;

[0007] The energy storage device includes a first number of power supply modules, and the first number of power supply modules are arranged in parallel;

[0008] The power supply module includes a second number of power supply components and a top air duct, the second number of power supply components are arranged in parallel, and the top air duct is arranged above the power supply components;

[0009] The air supply device includes a main air supply duct and a first number of branch air supply ducts); wherein, the main air supply duct is connected to the first number of branch air supply ducts, the main air supply duct is arranged on the first side of the power supply module, the first number of branch air supply ducts are respectively arranged on the tops of the first number of power supply modules, and the first number of branch air supply ducts are respectively connected to the top air ducts of the first number of power supply modules;

[0010] There are a third number of ventilation holes provided on the top air duct, and the openings of the ventilation holes face the power supply component;

[0011] The refrigeration device includes a cabinet air conditioner and a circulation pipeline, and the cabinet air conditioner is connected to the main air supply pipeline through the circulation pipeline.

[0012] In the above-mentioned distributed energy storage system, cold air can be evenly sent above the first number of power supply modules through the first number of branch air supply pipelines, and the cold air can be sent into the power supply modules through the ventilation holes provided on the branch air supply pipelines and facing the power supply modules, so as to achieve the effect of evenly dissipating heat from the first number of power supply modules in the distributed energy storage system and improve the operation stability of the distributed energy storage system.

[0013] In a possible implementation manner, the spacing distances of the third number of ventilation holes on the top air duct are not equal.

[0014] Since the heat generation conditions at different positions in the power supply module are different, setting ventilation holes with unequal spacing distances on the top air duct can deliver a larger air volume to the position with high heat generation and a smaller air volume to the position with low heat generation, thereby improving the uniformity of heat dissipation in the distributed energy storage system.

[0015] In a possible implementation manner, the power supply module further includes a raised structure;

[0016] The raised structure is provided on the second side and the third side of the power supply module, and the second side and the third side of the power supply module are symmetric with respect to the power supply module.

[0017] In a possible implementation manner, the raised structure includes a raised part and a recessed part;

[0018] The vertical distance between the raised part and the power supply component is a first distance; the vertical distance between the recessed part and the power supply component is a second distance; the first distance is less than the second distance.

[0019] In the above-mentioned distributed energy storage system, setting raised structures on the opposite sides of the power supply module can make the cold air close to the surface of the power supply component, increase the heat dissipation effect of the cold air on the power supply module, and improve the heat dissipation capacity of the distributed energy storage system.

[0020] In a possible implementation manner, the cabinet includes a cabinet body;

[0021] The energy storage device and the air supply device are arranged inside the cabinet body;

[0022] The refrigeration device is arranged outside the cabinet body;

[0023] The circulation pipeline is connected to the main air supply pipeline through the cabinet body.

[0024] In the above-mentioned distributed energy storage system, the energy storage device, the air supply device, and the refrigeration device are connected through the cabinet body to enhance the integrity of the distributed energy storage system.

[0025] In a possible implementation manner, the system further includes a return air device;

[0026] The cabinet body further includes a return air inlet;

[0027] The return air device includes a return air duct;

[0028] The return air duct is connected to the cabinet air conditioner through the return air inlet.

[0029] In the above-mentioned distributed energy storage system, by setting the return air duct, the hot air generated after heat dissipation is discharged to the outside of the cabinet body, enhancing the heat dissipation capacity of the distributed energy storage system.

[0030] In a possible implementation manner, the energy storage device further includes a first number of exhaust components;

[0031] The exhaust components are arranged on the fourth side of the power supply module, and the fourth side of the power supply module is symmetric with respect to the first side of the power supply module;

[0032] The exhaust components are connected to the return air duct.

[0033] In the above-mentioned distributed energy storage system, by arranging the exhaust components on the side of each power supply module opposite to the main air supply duct, the hot air generated after heat dissipation is discharged to the outside of the cabinet body in a timely manner, reducing the possibility of the hot air spreading in the cabinet body, and improving the heat dissipation capacity of the distributed energy storage system.

[0034] In a possible implementation manner, the branch air supply duct includes drain holes;

[0035] The openings of the drain holes face the power supply components.

[0036] In the above-mentioned distributed energy storage system, by setting drain holes on each branch air supply duct, it can play a fire extinguishing role in a timely manner when the power supply module catches fire due to excessive heat, enhancing the safety of the distributed energy storage system.

[0037] In a possible implementation manner, the system further includes a heat dissipation device, and the heat dissipation device is arranged at the bottom of the cabinet body;

[0038] The heat dissipation device includes a heat dissipation air inlet and a heat dissipation air outlet;

[0039] The heat dissipation air inlet is arranged on the first side of the cabinet body;

[0040] The heat dissipation air outlet is arranged on the second side of the cabinet body;

[0041] The first side of the cabinet body is symmetric with respect to the second side of the cabinet body.

[0042] In the above-mentioned distributed energy storage system, heat dissipation air inlets and heat dissipation air outlets can also be arranged on both sides of the cabinet body, and the cabinet is cooled by air flow to improve the heat dissipation performance of the distributed energy storage system.

[0043] As can be seen from the above technical solutions, the present application provides a distributed energy storage system, including an energy storage device, a air supply device, and a refrigeration device; the energy storage device includes a first number of power supply modules, and the first number of power supply modules are arranged in parallel; the power supply module includes a second number of power supply components and a top air duct, the second number of power supply components are arranged in parallel, and the top air duct is arranged above the power supply components; the air supply device includes a main air supply duct and a first number of branch air supply ducts; wherein, the main air supply duct is connected to the first number of branch air supply ducts, the main air supply duct is arranged on the first side of the power supply module, the first number of branch air supply ducts are respectively arranged on the tops of the first number of power supply modules, and the first number of branch air supply ducts are respectively connected to the top air ducts of the first number of power supply modules; a third number of ventilation holes are arranged on the top air duct, and the openings of the ventilation holes face the power supply components; the refrigeration device includes a cabinet air conditioner and a circulation duct, and the cabinet air conditioner is connected to the main air supply duct through the circulation duct.

[0044] In the above-mentioned distributed energy storage system, cold air can be evenly sent above the first number of power supply modules through the first number of branch air supply ducts, and the cold air is sent into the power supply modules through the ventilation holes arranged on the branch air supply ducts and facing the power supply modules, so as to evenly dissipate heat from the first number of power supply modules in the distributed energy storage system, and improve the operation stability of the distributed energy storage system. Description of the Drawings

[0045] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0046] Figure 1 It is a schematic diagram of the overall structure of the distributed energy storage system described in the embodiment of the present application;

[0047] Figure 2 It is a schematic diagram of the structure of the power supply module described in the embodiment of the present application;

[0048] Figure 3 It is a schematic diagram of the convex structure described in the embodiment of the present application;

[0049] Figure 4 It is a schematic diagram of the exhaust component described in the embodiment of the present application;

[0050] Figure 5 It is a simulation temperature distribution diagram of the distributed energy storage system described in the embodiment of the present application.

[0051] Illustration:

[0052] Among them: 101 - power supply module; 1011 - power supply component; 1012 - top air duct; 10121 - ventilation hole; 1013 - protruding structure; 102 - exhaust component; 201 - main air supply duct; 202 - branch air supply duct; 2021 - drain hole; 301 - cabinet air conditioner; 302 - circulation duct; 4 - cabinet body; 401 - air return opening; 501 - air return duct; 601 - heat dissipation air inlet; 602 - heat dissipation air outlet. Specific implementation manner

[0053] The embodiments will be described in detail below, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following embodiments do not represent all implementation manners consistent with the present application. They are only examples of systems and methods consistent with some aspects of the present application detailed in the claims.

[0054] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the implementation manners described next, rather than intending to limit the implementation manners of the present application. Unless otherwise specified, these terms should be understood in their ordinary and common meanings.

[0055] The terms "first", "second", "third", etc. in the specification, claims and the above-mentioned drawings of the present application are used to distinguish similar or like objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that such terms can be interchanged under appropriate circumstances.

[0056] The distributed energy storage system balances the supply - demand fluctuations of the power grid by regulating the energy storage and release processes, ensuring the stability and reliability of power supply. The distributed energy storage cabinet is the core of the distributed energy storage system, mainly including energy storage units, and the energy storage units are composed of multiple battery pack arrays, and each battery pack is arranged by multiple battery cells. Although this structure improves the energy storage density, it also affects the heat dissipation performance of the distributed energy storage system. Since heat is generated during the charging and discharging process of the battery pack, if it cannot be discharged in time, it will directly affect the working efficiency and lifespan of the battery cells, and even pose potential safety hazards. Therefore, it is necessary to improve the heat dissipation capacity of the distributed energy storage system.

[0057] Air - cooled heat dissipation reduces the heat of the battery packs in the cabinet by inputting cold air into the cabinet. However, in high - capacity and high - density energy storage scenarios, due to problems such as uneven air flow distribution, low fan efficiency, and mutual occlusion between battery packs, the temperature of local areas is too high, reducing the operating stability of the distributed energy storage system.

[0058] To solve the problem that uneven internal heat dissipation in a distributed energy storage system leads to excessively high temperature in a local area and reduces the operating stability of the system, some embodiments of the present application provide a distributed energy storage system. Figure 1 Schematic diagram of the overall structure of the distributed energy storage system according to an embodiment of the present application; Figure 2 Schematic diagram of the power supply module structure according to an embodiment of the present application; Figure 3 Schematic diagram of the convex structure according to an embodiment of the present application; Figure 4 Schematic diagram of the exhaust air assembly according to an embodiment of the present application; Figure 5 Simulated temperature distribution diagram of the distributed energy storage system according to an embodiment of the present application. The following will be combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 to elaborate in detail on the distributed energy storage system provided by the present application.

[0059] Some embodiments of the present application provide a distributed energy storage system, including: an energy storage device, a air supply device, and a refrigeration device; the energy storage device includes a first number of power supply modules 101, and the first number of power supply modules 101 are arranged in parallel; the power supply module 101 includes a second number of power supply components 1011 and a top air duct 1012, the second number of power supply components 1011 are arranged in parallel, and the top air duct 1012 is arranged above the power supply component 1011; the air supply device includes a main air supply duct 201 and a first number of branch air supply ducts 202; wherein, the main air supply duct 201 is connected to the first number of branch air supply ducts 202, the main air supply duct 201 is arranged on the first side of the power supply module 101, the first number of branch air supply ducts 202 are respectively arranged on the tops of the first number of power supply modules 101, and the first number of branch air supply ducts 202 are respectively connected to the top air ducts 1012 of the first number of power supply modules 101; a third number of ventilation holes 10121 are arranged on the top air duct 1012, and the openings of the ventilation holes 10121 face the power supply component 1011; the refrigeration device includes a cabinet air conditioner 301 and a circulation duct 302, and the cabinet air conditioner 301 is connected to the main air supply duct 201 through the circulation duct 302.

[0060] Exemplarily, such as Figure 1As shown, the distributed energy storage system includes six power supply modules 101, and the six power supply modules 101 are arranged side by side from top to bottom. Each power supply module 101 includes ten power supply components 1011, and the ten power supply components 1011 are arranged side by side from left to right. The main air supply duct 201 is arranged on one side of the six power supply modules 101 and is connected to the circulation duct 302, and is used for sending the cold air generated by the cabinet air conditioner 301 into the distributed energy storage system. Six branch air supply ducts 202 are respectively arranged on the tops of the six power supply modules 101, and are used for evenly sending the cold air of the main air supply duct 201 into the top air ducts 1012 of the six power supply modules 101.

[0061] As Figure 2 shown, six ventilation holes 10121 are arranged on the top air duct 1012 of the power supply module 101, and the openings of the ventilation holes 10121 face the power supply components 1011, so that the cold air sent into the power supply module 101 by the branch air supply duct 202 can be sent to the positions where the power supply components 1011 are located to cool the power supply components 1011.

[0062] In some embodiments, the spacing distances of the third number of ventilation holes 10121 on the top air duct 1012 are not equal.

[0063] Exemplarily, as Figure 2 shown, the power supply module 101 includes ten power supply components 1011, and six ventilation holes 10121 are arranged on the top air duct 1012 of the power supply module 101. Since the heat generation of the power supply components 1011 in the middle part of the ten power supply components 1011 is higher than that of the power supply components 1011 on the outer side, the spacing of the ventilation holes 10121 arranged in the middle part of the top air duct 1012 is smaller than the spacing of the ventilation openings 10121 arranged on the outer side.

[0064] In some embodiments, the power supply module 101 further includes a protruding structure 1013; the protruding structure 1013 is arranged on the second side and the third side of the power supply module 101, and the second side and the third side of the power supply module are symmetrical with respect to the power supply module 101.

[0065] In some embodiments, the protruding structure 1013 includes a protruding part and a recessed part; the vertical distance between the protruding part and the power supply component 1011 is a first distance; the vertical distance between the recessed part and the power supply component 1011 is a second distance; the first distance is less than the second distance.

[0066] Exemplarily, as Figure 3As shown, raised structures 1013 are respectively provided on the second side and the third side of the power supply module 101, and the two raised structures 1013 are symmetrical with respect to the power supply module 101. The vertical distance between the raised part of the raised structure 1013 and the power supply component 1011 is less than the vertical distance between the sunken part and the power supply component 1011, thereby reducing the distance between the cold air sent into the power supply module 101 and the power supply component 1011, enabling the cold air to flow rapidly close to the surface of the power supply component 1011 and enhancing the heat dissipation effect of the cold air on the power supply component 1011.

[0067] In some embodiments, the cabinet includes a cabinet body 4; an energy storage device and a air supply device are arranged inside the cabinet body 4; a refrigeration device is arranged outside the cabinet body 4; a circulation pipeline 302 is connected to the main air supply pipeline 201 through the cabinet body 4.

[0068] Exemplarily, as Figure 1 shown, both the energy storage device and the air supply device of the distributed energy storage system are arranged in the cabinet body 4, reducing dust pollution and corrosion, while the refrigeration device is arranged outside the cabinet body 4, and the cabinet body serves to connect the refrigeration device and the air supply device, enabling the cold air in the cabinet air conditioner 301 to be input into the energy storage device to achieve the heat dissipation function.

[0069] In some embodiments, the energy storage device further includes a first number of exhaust components 102; the exhaust components 102 are arranged on the fourth side of the power supply module 101, and the fourth side of the power supply module is symmetrical with respect to the power supply module 101 to the first side of the power supply module; the exhaust components 102 are connected to the return air pipeline 501.

[0070] Exemplarily, as Figure 4 shown, an exhaust component 102 is arranged on one side of the power supply module 101 for discharging the hot air generated after heat dissipation outside the cabinet body 4, reducing the possibility of the hot air diffusing in the distributed energy storage cabinet. To improve the coherence of air circulation, the main air supply pipeline 201 for conveying cold air and the exhaust component 102 for exhausting air are respectively arranged on both sides of the power supply module 101, so that the positions where the main air supply pipeline 201 and the exhaust component 102 are located are symmetrical with respect to the power supply module 101.

[0071] As Figure 1 shown, the exhaust component 102 is connected to the return air pipeline 501 for inputting the discharged hot air into the cabinet air conditioner 301 through the return air pipeline 501 to achieve the reciprocating flow of air.

[0072] In some embodiments, the distributed energy storage system further includes a return air device; the cabinet body 4 further includes a return air opening 401; the return air device includes a return air pipeline 501; the return air pipeline 501 is connected to the cabinet air conditioner 301 through the return air opening 401.

[0073] Exemplarily, as Figure 1As shown in the figure, a return air duct 501 is provided on one side of the cabinet body 4 connected to the exhaust air assembly 102, so that the hot air discharged by the exhaust air assembly 102 enters the return air duct 501, and the return air duct 501 inputs the hot air back into the cabinet air conditioner 301 through the return air opening 401, forming a cyclic flow of hot and cold air.

[0074] In some embodiments, the branch air supply duct 202 includes a drain hole 2021; the opening of the drain hole 2021 faces the power supply assembly 1011.

[0075] Exemplarily, the energy storage device of the distributed energy storage system includes 6 power supply modules 101, 1 branch air supply duct 202 is provided on the top of each power supply module 101, a total of 6 branch air supply ducts 202 are provided, and drain holes 2021 are provided on all 6 branch air supply ducts 202, so that the openings of the drain holes 2021 face the power supply assembly 1011. When the power supply assembly 1011 catches fire, the drain hole 2021 can realize the water spraying function for extinguishing the fire.

[0076] In some embodiments, the distributed energy storage system further includes a heat dissipation device, and the heat dissipation device is arranged at the bottom of the cabinet body; the heat dissipation device includes a heat dissipation air inlet 601 and a heat dissipation air outlet 602; the heat dissipation air inlet 601 is arranged on the first side of the cabinet body 4; the heat dissipation air outlet 602 is arranged on the second side of the cabinet body 4; the first side of the cabinet body is symmetrical to the second side of the cabinet body with respect to the cabinet body 4.

[0077] Exemplarily, as Figure 1 shown, a heat dissipation air inlet 601 and a heat dissipation air outlet 602 are arranged at the bottom of the cabinet body 4, and the heat dissipation air inlet 601 and the heat dissipation air outlet 602 are symmetrical with respect to the cabinet body 4, so that air can enter the distributed energy storage cabinet for heat dissipation and then flow out smoothly, improving the continuity of air flow.

[0078] In some embodiments, the simulation temperature distribution diagram of the distributed energy storage system after cooling by the above method is as Figure 5 shown, and it can be seen from Figure 5 that the internal temperature distribution of the distributed energy storage system after heat dissipation is uniform.

[0079] As can be seen from the above technical solutions, the present application provides a distributed energy storage system, including an energy storage device, a air supply device, and a refrigeration device; the energy storage device includes a first number of power supply modules, and the first number of power supply modules are arranged in parallel; the power supply module includes a second number of power supply components and a top air duct, the second number of power supply components are arranged in parallel, and the top air duct is arranged above the power supply components; the air supply device includes a main air supply duct and a first number of branch air supply ducts); wherein, the main air supply duct is connected to the first number of branch air supply ducts, the main air supply duct is arranged on the first side of the power supply module, the first number of branch air supply ducts are respectively arranged on the tops of the first number of power supply modules, and the first number of branch air supply ducts are respectively connected to the top air ducts of the first number of power supply modules; a third number of ventilation holes are arranged on the top air duct, and the openings of the ventilation holes face the power supply components; the refrigeration device includes a cabinet air conditioner and a circulation duct, and the cabinet air conditioner is connected to the main air supply duct through the circulation duct.

[0080] In the above distributed energy storage system, cold air can be evenly sent above the first number of power supply modules through the first number of branch air supply ducts, and the cold air can be sent into the power supply modules through the ventilation holes arranged on the branch air supply ducts and facing the power supply modules, so as to achieve the effect of evenly dissipating heat from the first number of power supply modules in the distributed energy storage system and improve the operating stability of the distributed energy storage system.

[0081] For the similar parts between the embodiments provided in the present application, reference can be made to each other. The specific embodiments provided above are only several examples under the general concept of the present application and do not constitute a limitation on the protection scope of the present application. For those skilled in the art, any other embodiments extended based on the solutions of the present application without creative efforts belong to the protection scope of the present application.

Claims

1. A distributed energy storage system, characterized in that, Comprising: A cabinet, an energy storage device, a air supply device and a refrigeration device; The energy storage device includes a first number of power supply modules (101), and the first number of power supply modules (101) are arranged in parallel; The power supply module (101) includes a second number of power supply components (1011) and a top air duct (1012), the second number of power supply components (1011) are arranged in parallel, and the top air duct (1012) is arranged above the power supply components (1011); The air supply device includes a main air supply duct (201) and a first number of branch air supply ducts (202); wherein, the main air supply duct (201) is connected to the first number of branch air supply ducts (202), the main air supply duct (201) is arranged on the first side of the power supply module (101), the first number of branch air supply ducts (202) are respectively arranged on the tops of the first number of power supply modules (101), and the first number of branch air supply ducts (202) are respectively connected to the top air ducts (1012) of the first number of power supply modules (101); A third number of ventilation holes (10121) are arranged on the top air duct (1012), and the openings of the ventilation holes (10121) face the power supply components (1011); The refrigeration device includes a cabinet air conditioner (301) and a circulation duct (302), and the cabinet air conditioner (301) is connected to the main air supply duct (201) through the circulation duct (302).

2. The distributed energy storage system according to claim 1, wherein The interval distances of the third number of ventilation holes (10121) on the top air duct (1012) are not equal.

3. The distributed energy storage system according to claim 1, characterized in that The power supply module (101) further includes a convex structure (1013); The convex structure (1013) is arranged on the second side and the third side of the power supply module (101), and the second side of the power supply module is symmetrical to the third side of the power supply module with respect to the power supply module (101).

4. The distributed energy storage system according to claim 3, wherein The convex structure (1013) includes a convex part and a concave part; The vertical distance between the convex part and the power supply component (1011) is a first distance; the vertical distance between the concave part and the power supply component (1011) is a second distance; the first distance is less than the second distance.

5. The distributed energy storage system according to claim 1, wherein The cabinet includes a cabinet body (4); The energy storage device and the air supply device are arranged inside the cabinet body (4); The refrigeration device is arranged outside the cabinet body (4); The circulation duct (302) is connected to the main air supply duct (201) through the cabinet body (4).

6. The distributed energy storage system according to claim 5, characterized in that, The system further includes a return air device; The cabinet body (4) further includes a return air opening (401); The return air device includes a return air duct (501); The return air duct (501) is connected to the cabinet air conditioner (301) through the return air opening (401).

7. The distributed energy storage system according to claim 6, characterized in that The energy storage device further includes a first number of exhaust components (102); The exhaust component (102) is arranged on the fourth side of the power supply module (101), and the fourth side of the power supply module is symmetrical to the first side of the power supply module with respect to the power supply module (101); The exhaust air assembly (102) is connected to the return air duct (501).

8. The distributed energy storage system according to claim 1, wherein, The branch air supply duct (202) is provided with a drain hole (2021); The opening of the drain hole (2021) faces the power supply assembly (1011).

9. The distributed energy storage system according to claim 6, wherein The system further includes a heat dissipation device, and the heat dissipation device is arranged at the bottom of the cabinet body; The heat dissipation device includes a heat dissipation air inlet (601) and a heat dissipation air outlet (602); The heat dissipation air inlet (601) is arranged on the first side of the cabinet body (4); The heat dissipation air outlet (602) is arranged on the second side of the cabinet body (4); The first side of the cabinet body is symmetrical to the second side of the cabinet body with respect to the cabinet body (4).

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