Energy storage container

By integrating the heat dissipation device into the energy storage container and using a cover and guide to prevent liquid from entering, the problem of large size and separate assembly of heat dissipation devices in the prior art is solved, thereby reducing labor costs and improving waterproof performance.

CN114614140BActive Publication Date: 2026-04-28SHENZHEN CLOU ELECTRONICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN CLOU ELECTRONICS
Filing Date
2022-02-17
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

The heat dissipation devices for inverters in existing energy storage containers are bulky and require separate assembly, increasing labor costs and lacking sufficient waterproofing performance.

Method used

The heat dissipation device is integrated into the energy storage container, and the air outlet is covered by a cover plate. The cover is designed to prevent liquid from entering, while guides and barriers are set to enhance waterproof performance. The heat dissipation efficiency is optimized by combining a pressure relief device and air guide components.

Benefits of technology

The integration of the heat dissipation device reduces manual assembly costs, improves waterproof performance, and optimizes heat dissipation efficiency and system operation safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses an energy storage container. The energy storage container comprises an inverter, a battery rack, a box body, a heat dissipation member and a cover plate. The battery rack is used for mounting a battery module, and the battery module is connected to the inverter. The box body is provided with an inner cavity, and the box body is further provided with a first air inlet and a first air outlet, and the first air inlet and the first air outlet are both communicated with an external space and the inner cavity. The heat dissipation member is accommodated in the inner cavity, and the heat dissipation member is used for discharging air from the inner cavity. The cover plate covers the first air outlet, and the cover plate comprises a frame body and a cover member. The cover member is provided with a connecting portion, a blocking portion is arranged at one end close to the heat dissipation member, one end of the connecting portion is connected to the blocking portion, the other end of the connecting portion extends downwardly and is connected to a guide portion in a direction away from the heat dissipation member, and the guide portion extends in a direction away from the heat dissipation member. The application can prevent water, and the heat dissipation device can be integrated in the energy storage container, so that subsequent assembly is not needed, and labor cost can be saved.
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Description

Technical Field

[0001] This invention relates to the field of energy storage technology equipment, and more particularly to an energy storage container. Background Technology

[0002] Energy storage containers are highly integrated energy storage devices, housing multiple energy storage battery modules. These modules are connected to an inverter and then to external devices via a few interfaces. They are characterized by high integration, small footprint, and good scalability, making them an important component of distributed energy, smart grids, and the energy internet development within energy storage systems. Inverters generate significant heat during operation. Existing inverter cooling systems are bulky and need to protrude from the container's exterior for waterproofing. This necessitates additional installation of the cooling system at the deployment site, increasing labor costs. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes an energy storage container that integrates a heat dissipation device inside the container, reducing labor costs while maintaining waterproof performance.

[0004] An energy storage container according to a first aspect embodiment of the present invention includes:

[0005] Inverter;

[0006] Multiple battery racks are provided for mounting battery modules, which are connected to the inverter.

[0007] The enclosure includes side walls, a top wall, a base, and a partition. The inner surfaces of the top wall, the base, and the plurality of side walls define an inner cavity. The partition separates the inner cavity to form a first accommodating space and a second accommodating space. The battery rack is accommodated in the first accommodating space, and the inverter is accommodated in the second accommodating space. The side walls are provided with a first air inlet and a first air outlet, which communicate with the inner cavity.

[0008] A first heat dissipation component is housed in the inner cavity. The first heat dissipation component is connected to the housing and faces the first air outlet. The first heat dissipation component is used to discharge air from the first air outlet into the inner cavity.

[0009] A cover plate is connected to the housing and covers the first air outlet. The cover plate includes a frame and a covering part. The covering part is connected to the inner surface of the frame. A plurality of covering parts are spaced apart in the vertical direction. A first air duct is defined between two covering parts. The first air duct is used to exhaust air. The covering part includes a connecting part. The connecting part extends downward at an angle away from the first heat sink.

[0010] The energy storage container according to embodiments of the present invention has at least the following advantages: The energy storage container incorporates a first heat dissipation component within a cavity facing a first air outlet, with a cover plate covering the first air outlet. The cover plate includes a frame and a covering portion, and the covering portion is provided with a connecting portion to prevent liquid from entering the cavity. The heat dissipation device can be integrated into the energy storage container, thus eliminating the need for subsequent assembly and saving labor costs.

[0011] According to some embodiments of the present invention, the covering portion further includes a blocking portion and a guiding portion, one end of the connecting portion is connected to the blocking portion, the other end of the connecting portion is connected to the guiding portion, the blocking portion is disposed relative to the connecting portion at one end close to the first heat sink for blocking liquid, and the guiding portion extends horizontally in a direction away from the first heat sink.

[0012] According to some embodiments of the present invention, a drain outlet is provided between the sidewall and the base, the base is provided with an inclined portion, the inclined portion extends downward toward the sidewall, and the angle between the inclined portion and the horizontal plane is between 5° and 15°.

[0013] According to some embodiments of the present invention, a pressure relief device is also provided, which is connected to the housing. The pressure relief device includes a pressure sensor and a pressure relief valve. The pressure sensor is used to measure the pressure in the inner cavity, and the pressure relief valve is capable of discharging gas from the first accommodating space.

[0014] According to some embodiments of the present invention, the battery module further includes a busbar and a central control cabinet, the central control cabinet being housed in the first accommodating space, the busbar being connected to the base, the battery module including a communication module and an energy storage module, the energy storage module being connected to the busbar via a power line, the busbar being connected to the inverter, the communication module being connected to the central control cabinet via a communication line, and the communication line extending to the top of the battery rack.

[0015] According to some embodiments of the present invention, the device further includes a plurality of side doors, the side walls being provided with a plurality of first openings, the side doors being connected to the housing, the side doors being able to cover the first openings, the side doors being able to move relative to the housing to open the first openings, and the plurality of side doors corresponding one-to-one with the plurality of first openings.

[0016] According to some embodiments of the present invention, a refrigeration device is further included, the refrigeration device being housed in the first accommodating space, and the refrigeration device being mounted on the side door and / or the side wall.

[0017] According to some embodiments of the present invention, an air guiding assembly is further included, the air guiding assembly including an air guiding element and an air guiding plate, the air guiding plate being connected to the air guiding element, the air guiding element being provided with an air guiding port, a plurality of air guiding plates surrounding and defining a first channel, the air guiding port communicating with the first channel, the air guiding port facing the refrigeration device, the air guiding plate extending in a front-rear direction, the air guiding plate being provided with a second opening, the second opening being located at the top of the housing, a plurality of second openings being spaced apart along the extending direction of the air guiding element, the second openings being used to release air cooled by the refrigeration device.

[0018] According to some embodiments of the present invention, the cross-sectional area of ​​the end of the first channel facing the air guide is larger than the cross-sectional area of ​​the other end.

[0019] According to some embodiments of the present invention, the first channel is provided with a first region and a second region along the airflow direction, and the cross-sectional area of ​​the first region is larger than the cross-sectional area of ​​the second region.

[0020] According to some embodiments of the present invention, the air guide assembly further includes an adjusting member connected to the air guide member, the adjusting member covering the second opening, and the adjusting member being movable relative to the air guide member to adjust the degree of coverage of the second opening.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a cross-sectional view of an energy storage container according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A longitudinal sectional view of the cover plate assembly in the embodiment;

[0025] Figure 3 This is a front view of the energy storage container according to an embodiment of the present invention;

[0026] Figure 4 This is a plan sectional view of the energy storage container according to an embodiment of the present invention;

[0027] Figure 5 This is a cross-sectional view of the air guide component according to an embodiment of the present invention;

[0028] Figure 6 This is a rear view of the energy storage container according to an embodiment of the present invention;

[0029] Figure 7 for Figure 6 An enlarged view of area A in Example 1;

[0030] Figure 8 This is a left view of an energy storage container according to an embodiment of the present invention.

[0031] Figure 9 This is a schematic diagram of a battery module according to an embodiment of the present invention.

[0032] Figure label:

[0033] Box body 100, top wall 110, side wall 120, base 130, inclined part 131, first accommodating space 140, partition 141, second accommodating space 150, first air inlet 160;

[0034] Cover plate 170, blocking part 171, connecting part 172, guide part 173, first air duct 174, protrusion 175, frame 176, covering part 177;

[0035] First air outlet 180, side door 190;

[0036] Inverter 200, first heat sink 210;

[0037] Air guide 300, adjusting component 310, first channel 320, first area 321, second area 322, second opening 330, blade 340, air guide 350, air guide plate 360;

[0038] Battery rack 400, battery module 410, second heat sink 411, second air inlet 412;

[0039] Refrigeration unit 500, central control cabinet 600, manifold 700, pressure relief device 800. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0042] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0043] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0044] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Reference Figures 1 to 9A first aspect of the present invention provides an energy storage container, including an inverter 200, a battery rack 400, a housing 100, a first heat sink 210, and a cover plate 170. Multiple battery racks 400 are provided, and each battery rack 400 is used to mount battery modules 410, which are connected to the inverter 200. The housing 100 includes side walls 120, a top wall 110, a base 130, and a partition 141. The inner surfaces of the top wall 110, the base 130, and the multiple side walls 120 define an inner cavity. The partition 141 divides the inner cavity to form a first accommodating space 140 and a second accommodating space 150. The battery rack 400 and the inverter 200 are accommodated within the inner cavity. The enclosure 100 is also provided with a first air inlet 160 and a first air outlet 180, which are located on the side wall 120. Both the first air inlet 160 and the first air outlet 180 connect to the external space and the first accommodating space 140. Multiple first air inlets 160 can be provided. A first heat sink 210 is housed in a second accommodating space 150 and is connected to the enclosure 100. The first heat sink 210 is used to exhaust air from the second accommodating space 150 through the first air outlet 180. For example, the first heat sink 210 can be a centrifugal fan with its intake facing the inverter 200 and its outlet facing the first air outlet 180, thereby exhausting the high-temperature air around the inverter 200 into the inner cavity. The cover plate 170 is connected to the housing 100 and covers the first air outlet 180. The cover plate 170 includes a frame 176 and a covering part 177. The covering part 177 is connected to the inner surface of the frame 176. Multiple covering parts 177 are spaced apart in the vertical direction. A first air duct 174 is defined between two covering parts 177. The covering part 177 close to the frame 176 and the frame 176 also define the first air duct 174. The first air duct 174 is used to exhaust air. The covering part 177 includes a connecting part 172. The connecting part 172 extends downward at an angle. After the liquid comes into contact with the connecting part 172, it will slide down along the connecting part 172. Due to the continuous airflow of the first air duct 174, the liquid cannot enter the second accommodating space 150, thereby achieving better waterproof performance.

[0046] Reference Figure 1 and Figure 2Furthermore, the covering portion 177 also includes a blocking portion 171 and a guide portion 173. One end of the connecting portion 172 is connected to the blocking portion 171, and the other end of the connecting portion 172 extends downward at an angle and is connected to the guide portion 173. The blocking portion 171 is disposed at the end near the first heat sink 210 relative to the connecting portion 172. The blocking portion 171 is approximately inverted "L" shaped and is used to prevent liquid from entering the second accommodating space 150. The guide portion 173 extends horizontally away from the first heat sink 210. After contacting the connecting portion 172, the liquid will slide along the connecting portion 172 to the protrusion 175 and drip down. In some embodiments, the first air outlet 180 and the first air inlet 160 are disposed on the same sidewall 120. The high-temperature air is horizontally discharged from the first air outlet 180 due to the horizontal arrangement of the guide portion 173, preventing high-temperature gas from flowing back to the first air inlet 160 and affecting the heat dissipation effect of the inverter 200.

[0047] Reference Figure 1 and Figure 2 Furthermore, a protrusion 175 is provided on the inner surface of the bottom of the frame 176. The protrusion 175 is vertically arranged and can prevent liquid from flowing in through the first air duct 174 formed between the cover 177, which is closest to the bottom of the frame 176, and the frame 176.

[0048] In some embodiments, since the inverter 200 and the battery rack 400 are respectively disposed in two independent spaces, the heat generated by the inverter 200 and the heat generated by the battery module 410 installed in the battery rack 400 do not affect each other. The first air inlet 160 and the first air outlet 180 connect to the external space and the second accommodating space 150, and the first heat sink 210 is housed in the second accommodating space 150, thereby effectively reducing the temperature of the space where the inverter 200 is located.

[0049] Reference Figure 6 and Figure 7 In some embodiments, a drain outlet is provided between the side wall 120 and the base 130. The base 130 is provided with an inclined portion 131, which extends downward toward the side wall 120. In order to facilitate the drainage when there is water inside the energy storage container, the angle between the inclined portion 131 and the horizontal plane is between 5° and 15°. If the angle between the inclined portion 131 and the horizontal plane is less than 5°, the slope is too gentle and it cannot effectively drain the water inside the container. If the angle between the inclined portion 131 and the horizontal plane is greater than 15°, it will compress the internal space of the energy storage container, thereby reducing the effective utilization space of the energy storage container.

[0050] In some embodiments, the energy storage container is further provided with a pressure relief device 800, which is connected to the container body 100. The pressure relief device 800 includes a pressure sensor and a pressure relief valve. The pressure sensor is used to measure the pressure of the first accommodating space 140. During normal operation, the first accommodating space 140 of the energy storage container does not exchange gases with the external space. Since the battery module 410 in the energy storage container uses lithium batteries, it releases toxic and harmful gases such as carbon monoxide and hydrogen during operation. Long-term use can cause the gas pressure in the first accommodating space 140 to rise. The pressure sensor detects the gas pressure in the internal gas cavity in real time. When the internal gas pressure reaches a certain level, the pressure sensor transmits the information to the pressure relief valve, which can discharge the gas from the first accommodating space 140 to the external space.

[0051] Reference Figure 8 In some embodiments, the energy storage container further includes a busbar 700 and a central control cabinet 600. The central control cabinet 600 is housed in a first accommodating space 140. The busbar 700 is connected to the base 130. The battery module 410 includes a communication module and an energy storage module. The energy storage module is connected to the busbar 700 via a power line. The busbar 700 is connected to the inverter 200. The communication module of each battery module 410 is connected to a communication line. The communication line extends to the top of the battery rack 400 and is routed through the top wall 110 to connect to the central control cabinet 600. The communication line and the power line are routed separately, which can effectively prevent the power line from interfering with the communication signal of the communication line, thereby increasing the communication capability of the communication line.

[0052] Reference Figure 4 In some embodiments, the energy storage container also includes multiple side doors 190, and multiple first openings are provided on the side walls 120. The side doors 190 are connected to the container body 100, and the side doors 190 can cover or expose the first openings. Each of the multiple side doors 190 corresponds one-to-one with a single first opening. The side doors 190 can be rotatably or slidably connected to the container body 100 so that they can cover or expose the first openings when moving. Personnel can enter and exit the energy storage container through the first openings. Since multiple side doors 190 are provided in different positions, when personnel need to handle devices in different locations, they only need to enter the energy storage container through the corresponding first opening. Furthermore, the first openings on the opposing side walls 120 of the energy storage container correspond to each other, i.e., they are in the same position. This facilitates operators to continue operating the same equipment simultaneously from both sides, and also allows for more rational use of the internal space, facilitating the installation and subsequent maintenance of the battery rack 400.

[0053] Reference Figure 1 and Figure 5In some embodiments, the energy storage container also includes a refrigeration unit 500, which is housed within the inner cavity and mounted on the side door 190 and / or side wall 120. The energy storage container uses a wall-mounted refrigeration unit 500, which is not connected to an external unit, allowing the wall-mounted refrigeration unit 500 to be prefabricated in the first accommodating space 140 without separate installation. The refrigeration unit 500 cools the battery module 410 within the first accommodating space 140. Since there is no gas exchange between the first accommodating space 140 and the external space during normal operation of the energy storage container, the refrigeration unit 500 creates an internal gas circulation within the first accommodating space 140, drawing in higher-temperature gas, cooling it, and then releasing it back into the first accommodating space 140, thereby effectively cooling the space where the battery module 410 is located.

[0054] Reference Figure 5 Furthermore, the energy storage container also includes an air guide assembly, which includes an air guide component 300 and an air guide plate 360. The air guide plate 360 ​​is connected to the air guide component 300. The air guide component 300 is provided with an air guide port 350. Multiple air guide plates 360 surround and define a first channel 320. The air guide port 350 faces the refrigeration device 500 and is connected to the first channel 320. Air cooled by the refrigeration device 500 can enter the first channel 320 through the air guide port 350. The air guide plate 360 ​​is provided with a second opening 330, which is located on the top of the housing 100. Multiple second openings 330 are spaced apart along the extending direction of the air guide 300. The second openings 330 are used to release air cooled by the cooling device 500. The cooled air released from the second openings 330 gradually descends from the top of the housing 100, while the hot air generated by the battery module 410 rises and exchanges heat with the cooled air near the battery module 410, thereby reducing the temperature of the battery module 410. Furthermore, the number of second openings 330 is equal to and corresponds one-to-one with the number of battery racks 400, ensuring that the cooled air released from the second openings 330 contacts the corresponding battery racks 400, thus facilitating sufficient heat exchange.

[0055] Reference Figure 5In some embodiments, the cross-sectional area of ​​the first channel 320 facing the air guide 350 is larger than the cross-sectional area of ​​the other end. For example, the cross-sectional area of ​​the first channel 320 (here, the cross-section refers to the surface area of ​​the surface formed by cutting the first channel with a plane perpendicular to the airflow direction) gradually decreases from the end facing the air guide 350 to the other end. In some embodiments, the first channel 320 is provided with a first region 321 and a second region 322 along the airflow direction. The cross-sectional area of ​​the first region 321 is larger than the cross-sectional area of ​​the second region 322, increasing the air pressure flowing from the first region 321 into the second region 322, allowing the gas entering the second region 322 to be smoothly discharged, ensuring sufficient airflow from each of the second openings 330. It is understood that the first channel 320 can be provided with more regions, with the cross-sectional area of ​​each region decreasing sequentially along the airflow direction. Alternatively, the cross-sectional area of ​​the first channel 320 can decrease from one end towards the air guide 350 to the other, ensuring that the gas pressure in the first channel 320 is equal everywhere, and that the flow rate of the gas discharged from each of the second openings 330 is approximately equal, thus allowing for sufficient heat exchange with the heat generated by the battery rack 400. If a first channel 320 of equal size is used, since the air guide 300 is provided with multiple second openings 330, a portion of the cooled air is discharged into the first accommodating space 140 through the second opening 330 at the end closer to the cooling device 500. This results in a decrease in the air pressure of the air still in the first channel 320, causing the air to be unable to be discharged smoothly at the second opening 330 far from the air guide 350, or the flow rate of the discharged gas to be too low to effectively cool the corresponding battery rack 400.

[0056] Reference Figure 5Furthermore, the air guiding assembly also includes an adjusting member 310, which is connected to the air guiding member 300. The adjusting member 310 covers the second opening 330 and can move relative to the air guiding member 300 to adjust the degree of coverage of the second opening 330, i.e., adjust the area of ​​the second opening 330 covered by the adjusting member 310. The adjusting member 310 includes a plurality of blades 340, each blade 340 having a rotating shaft. The blades 340 are rotatably connected to the air guiding member 300 to adjust the degree of coverage of the second opening 330, and the plurality of blades 340 are spaced apart from each other in the second opening 330. Alternatively, the adjusting member 310 includes a covering member and a track (neither shown in the figure), the track being connected to the air guiding member 300, and the covering member being able to translate relative to the track to adjust the degree of coverage of the first channel 320. The regulating component 310 adjusts the degree of coverage of the second opening 330, thereby regulating the flow rate of the cooled air released into the inner cavity through the second opening 330, to precisely regulate the temperature of the battery rack 400 corresponding to the second opening 330. To achieve precise temperature regulation, the battery module 410 provides real-time temperature feedback to the central control cabinet 600. The central control cabinet 600 adjusts the opening and closing degree of the second opening 330 corresponding to the battery rack 400 based on the temperature of different battery modules 410 on the same battery rack 400. Since the cold air released by the cooling device 500 flows from top to bottom, it exchanges heat with the hot air near each battery module 410, thereby reducing the temperature difference between the various battery modules 410 within the container 100 and improving the operating efficiency of the energy storage container. Specifically, the temperature difference is controlled within 5°C, thus improving the operating efficiency of the energy storage system.

[0057] Reference Figure 1 and Figure 9 In some embodiments of the present invention, there is a gap between adjacent battery racks 400. The battery module 410 further includes a second heat sink 411 and a second air inlet 412. The second heat sink 411 is disposed at the end of the battery module 410, and the second air inlet 412 is disposed on the side of the battery module 410. The second heat sink 411 is used to exhaust the air flowing through the battery module 410, allowing air to enter through the second air inlet 412 and pass through the interior of the battery module 410, carrying away the heat inside the battery module 410, reducing the overall temperature difference of the battery module 410, and ensuring the normal operation of the battery module 410. The second heat sink 411 can be a fan, blower, etc. The airflow generated by the second heat sink 411 can, on the one hand, allow the air to pass through the battery module 410 and carry away the heat, and on the other hand, the cold air generated by the cooling device 500 flows on the side of the battery module 410. The second heat sink 411 can introduce the cold air into the battery module 410 and exchange heat with the hot air in the battery module 410, so that the battery module 410 can be cooled down quickly.

[0058] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. An energy storage container, characterized in that, include: Inverter; Multiple battery racks are provided for mounting battery modules, which are connected to the inverter. The enclosure includes side walls, a top wall, a base, and a partition. The inner surfaces of the top wall, the base, and the plurality of side walls define an inner cavity. The partition separates the inner cavity to form a first accommodating space and a second accommodating space. The battery rack is accommodated in the first accommodating space, and the inverter is accommodated in the second accommodating space. The side walls are provided with a first air inlet and a first air outlet, which communicate with the inner cavity. A first heat dissipation component is housed in the inner cavity. The first heat dissipation component is connected to the housing and faces the first air outlet. The first heat dissipation component is used to discharge air from the first air outlet into the inner cavity. A cover plate is connected to the housing and covers the first air outlet. The cover plate includes a frame and a covering part. The covering part is connected to the inner surface of the frame. A plurality of covering parts are spaced apart in the vertical direction. A first air duct is defined between two covering parts. The first air duct is used to exhaust air. The covering part includes a connecting part and a guiding part. The connecting part extends downward at an angle away from the first heat sink. The guiding part is connected to the end of the connecting part away from the first heat sink and extends horizontally away from the first heat sink.

2. The energy storage container according to claim 1, characterized in that, The covering part further includes a blocking part, one end of the connecting part is connected to the blocking part, and the blocking part is disposed at the end near the first heat sink relative to the connecting part, for blocking liquid.

3. The energy storage container according to claim 1, characterized in that, A drain outlet is provided between the side wall and the base. The base is provided with an inclined portion that extends downward toward the side wall. The angle between the inclined portion and the horizontal plane is between 5° and 15°.

4. The energy storage container according to claim 1, characterized in that, A pressure relief device is also provided, which is connected to the housing. The pressure relief device includes a pressure sensor and a pressure relief valve. The pressure sensor is used to measure the pressure in the inner cavity, and the pressure relief valve can discharge gas from the first accommodating space.

5. The energy storage container according to claim 1, characterized in that, It also includes a busbar and a central control cabinet, the central control cabinet being housed in the first accommodating space, the busbar being connected to the base, the battery module including a communication module and an energy storage module, the energy storage module being connected to the busbar via a power line, the busbar being connected to the inverter, the communication module being connected to the central control cabinet via a communication line, and the communication line extending to the top of the battery rack.

6. The energy storage container according to claim 1, characterized in that, It also includes multiple side doors, each side wall having multiple first openings. The side doors are connected to the housing, each side door can cover the first opening, and each side door can move relative to the housing to open the first opening. Each of the multiple side doors corresponds one-to-one with each of the multiple first openings.

7. The energy storage container according to claim 6, characterized in that, It also includes a refrigeration device, which is housed in the first accommodating space and is installed on the side door and / or the side wall.

8. The energy storage container according to claim 7, characterized in that, It also includes an air guiding assembly, which includes an air guiding component and an air guiding plate. The air guiding plate is connected to the air guiding component. The air guiding component is provided with an air guiding port. Multiple air guiding plates surround and define a first channel. The air guiding port communicates with the first channel and faces the refrigeration device. The air guiding plate extends in the front-back direction and is provided with a second opening. The second opening is located at the top of the housing. Multiple second openings are spaced apart along the extension direction of the air guiding component. The second opening is used to release the air cooled by the refrigeration device.

9. The energy storage container according to claim 8, characterized in that, The cross-sectional area of ​​the first channel at one end facing the air guide is larger than the cross-sectional area at the other end.

10. The energy storage container according to claim 9, characterized in that, The first channel is provided with a first region and a second region along the airflow direction, and the cross-sectional area of ​​the first region is larger than that of the second region.

11. The energy storage container according to claim 8, characterized in that, The air guide assembly further includes an adjusting member connected to the air guide member, the adjusting member covering the second opening, and the adjusting member being movable relative to the air guide member to adjust the degree of coverage of the second opening.

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