Energy storage case with sealing structure

Abstract

The utility model relates to the technical field of energy storage cases, in particular to an energy storage case with a sealing structure, which comprises a case body and an upper cover. The upper edge of the box body is bent towards the inner side of the box body by 90 degrees to form a first supporting plate, the inner edge of the first supporting plate is bent upwards by 90 degrees to form a side baffle, and the upper edge of the side baffle is bent towards the outer side of the box body by 90 degrees to form a second supporting plate. The lower edge of the upper cover is bent towards the inner side of the box body by 90 degrees to form a third supporting plate, and the sum of the width of the third supporting plate and the width of the second supporting plate is smaller than the width of the first supporting plate so that the upper cover can be buckled on the box body. A sealing cavity is defined by the upper cover, the third supporting plate, the first supporting plate, the side baffles and the second supporting plate, and the sealing cavity is filled with a foaming sealant. And the box body is connected with the upper cover through a locking piece. According to the utility model, moisture and dust can be effectively prevented from invading into the cabinet, and the safety and reliability of the energy storage system are provided. In addition, the case is stable in overall structure, and electrical elements are convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of energy storage enclosure technology, and more specifically, it relates to an energy storage enclosure with a sealed structure. Background Technology

[0002] Liquid-cooled battery packs, battery modules, and other energy storage devices, as well as energy storage AC devices, all need to meet certain levels of waterproof and dustproof requirements during operation. These waterproof and dustproof requirements are achieved through the energy storage enclosure.

[0003] Currently, energy storage enclosures (such as the liquid-cooled enclosure disclosed in CN117477107A) primarily use self-tapping screws to fix the top cover to the enclosure, lacking a corresponding sealing structure. This results in poor sealing, making it highly susceptible to moisture and dust intrusion into electrical components such as power modules, IGBT modules, isolation modules, power modules, and control modules. Once moisture or dust enters, it can easily cause arcing and short circuits inside the enclosure, leading to module explosions or, in severe cases, fires and explosions of the entire energy storage system. Therefore, we propose a new energy storage enclosure with a sealed structure. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an energy storage enclosure with a sealed structure to solve the technical problems existing in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] An energy storage enclosure with a sealed structure includes an enclosure body and a matching top cover. The upper edge of the enclosure body is bent 90 degrees inward to form a first support plate for supporting the top cover. The inner edge of the first support plate is bent 90 degrees upward to form a side baffle. The upper edge of the side baffle is bent 90 degrees outward to form a second support plate. The lower edge of the top cover is bent 90 degrees inward to form a third support plate for abutting against the first support plate. The sum of the width of the third support plate and the width of the second support plate is less than the width of the first support plate so that the top cover can be fastened to the enclosure body. The top cover, the third support plate, the first support plate, the side baffle, and the second support plate form a sealed cavity, which is filled with a foamed sealant. The enclosure body and the top cover are connected by a locking device.

[0007] Optionally, the locking component includes a bolt and a waterproof nut post, with the waterproof nut post fixedly mounted on the first support plate, and the bolt threadedly connected to the waterproof nut post after passing through the third support plate.

[0008] Optionally, there is a 2-4mm gap between the second support plate and the inner wall of the top cover.

[0009] Optionally, the top cover has a groove for accommodating the bolt and nut portion.

[0010] Optionally, the enclosure is formed by a single-layer sheet metal integral bending process.

[0011] Optionally, the top cover is formed by a single-layer sheet metal integral bending process.

[0012] Optionally, the enclosure may contain several electrical components for energy storage devices or energy storage AC devices.

[0013] Optionally, each side of the enclosure is connected to the top cover by three locking devices.

[0014] Optionally, the wall thickness of the enclosure is equal to the wall thickness of the top cover.

[0015] In summary, this utility model has the following beneficial effects: by sequentially bending the first support plate, side baffle, and second support plate on the housing, and bending the third support plate on the top cover, a sealed cavity is formed by the top cover, third support plate, first support plate, side baffle, and second support plate. Filling this sealed cavity with foamed sealant effectively prevents moisture and dust from entering the housing, thus improving the safety and reliability of the energy storage system. Furthermore, the overall structure of the housing is stable, facilitating the installation of electrical components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 Side view;

[0018] Figure 3 yes Figure 2 A magnified view of region A in the middle. Detailed Implementation

[0019] To make the objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0021] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. The terms "vertical," "horizontal," "left," "right," "above," "below," and similar expressions are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] This utility model provides an energy storage enclosure with a sealed structure, such as Figure 1-3 As shown, the device includes a housing 1 and a matching top cover 2. The upper edge of the housing 1 is bent inward at a 90-degree angle to form a first support plate 11 for supporting the top cover 2. The inner edge of the first support plate 11 is bent upward at a 90-degree angle to form a side baffle 12. The upper edge of the side baffle 12 is bent outward at a 90-degree angle to form a second support plate 13. The lower edge of the top cover 2 is bent inward at a 90-degree angle to form a third support plate 21 for abutting against the first support plate 11. The sum of the width of the third support plate 21 and the width of the second support plate 13 is less than the width of the first support plate 11 so that the top cover 2 can be fastened to the housing 1. The top cover 2, the third support plate 21, the first support plate 11, the side baffle 12, and the second support plate 13 form a sealed cavity, which is filled with foamed sealant 4. The housing 1 and the top cover 2 are connected by a locking member 3.

[0024] In this embodiment, the interior of the housing 1 houses electrical components such as a power module, IGBT module, isolation module, power module, control module, and heat sink fins. The specific type and quantity of electronic components can be selected according to the needs of the energy storage device or energy storage AC device. The housing 1 is formed by a 2.0mm thick single-layer sheet metal integral bending process, and the joints of the four upwardly bent sides are sealed and welded. The top cover 2 is formed by a 2.0mm thick single-layer sheet metal integral bending process, and the joints of the four downwardly bent sides are sealed and welded. The locking component 3 includes a bolt 31 and a waterproof nut post 32, wherein the waterproof nut post 32 is fixedly nested on the first support plate 11, and the bolt 31 passes through the third support plate 21 and is threadedly connected to the waterproof nut post 32. In other embodiments, the locking component 3 can be a rivet. Compared with rivets, the locking component 3 composed of bolt 31 and waterproof nut post 32 is more convenient for the installation or removal of the top cover, facilitating maintenance personnel to maintain the energy storage system. The foam sealant 4 is selected from any one of polyurethane foam sealant, silicone foam sealant, and polysulfide foam sealant. When installing the top cover 2, first fasten the top cover 2 onto the top of the housing 1, then install bolts 31 in the groove 22 of the top cover, so that the threaded part of the bolt 31 passes through the third support plate 21 and is threadedly connected to the waterproof nut post 32. The nut part of the bolt 31 and the waterproof nut post 32 clamp the first support plate 11 and the third support plate 21. To obtain better sealing, there is a 2-4mm gap between the second support plate 13 and the inner wall of the top cover 2, that is, the thickness of the foam sealant 4 between the second support plate 13 and the inner wall of the top cover 2 is 2-4mm. To ensure force balance, each side of the housing 1 is connected to the top cover 2 by three locking pieces 3. In other embodiments, the number of locking pieces 3 can be set as needed. Generally, the larger the size of the housing 1 or the top cover 2, the more locking pieces 3 are required. In this embodiment, the dimensions of the chassis 1 are 870mm long * 680mm wide * 180mm high. It is equipped with 12 evenly distributed locking parts 3, which can make the chassis 1 and the top cover 2 cooperate more evenly and have a higher sealing performance. Therefore, when the energy storage chassis is running in various extreme environments such as rain, snow and hail, the chassis structure can ensure the normal operation of its internal electrical components and is not affected by the environment.

[0025] This invention achieves a sealed cavity by sequentially bending the first support plate 11, side baffle 12, and second support plate 13 onto the housing 1, and bending the third support plate 21 onto the top cover 2. The top cover 2, third support plate 21, first support plate 11, side baffle 12, and second support plate 13 then form the sealed cavity. Filling this cavity with foamed sealant 4 effectively prevents moisture and dust from entering the housing, thus enhancing the safety and reliability of the energy storage system. Furthermore, the overall structure of the housing is stable, facilitating the installation of electrical components.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An energy storage enclosure with a sealed structure, characterized in that, The enclosure includes a housing and a matching top cover. The upper edge of the housing is bent 90 degrees inward to form a first support plate for supporting the top cover. The inner edge of the first support plate is bent 90 degrees upward to form a side baffle. The upper edge of the side baffle is bent 90 degrees outward to form a second support plate. The lower edge of the top cover is bent 90 degrees inward to form a third support plate for abutting against the first support plate. The sum of the width of the third support plate and the width of the second support plate is less than the width of the first support plate so that the top cover can be fastened to the housing. The top cover, the third support plate, the first support plate, the side baffle, and the second support plate form a sealed cavity, which is filled with foamed sealant. The housing and the top cover are connected by a locking device.

2. The energy storage enclosure with a sealed structure according to claim 1, characterized in that, The locking component includes a bolt and a waterproof nut post. The waterproof nut post is fixedly mounted on the first support plate, and the bolt passes through the third support plate and is threadedly connected to the waterproof nut post.

3. The energy storage enclosure with a sealed structure according to claim 1, characterized in that, There is a 2-4mm gap between the second support plate and the inner wall of the top cover.

4. The energy storage enclosure with a sealed structure according to claim 2, characterized in that, The top cover has a groove for accommodating bolts and nuts.

5. The energy storage enclosure with a sealed structure according to claim 1, characterized in that, The box body is formed by a single-layer sheet metal integral bending process.

6. The energy storage enclosure with a sealed structure according to claim 1, characterized in that, The top cover is formed by a single-layer sheet metal integral bending process.

7. The energy storage enclosure with a sealed structure according to claim 1, characterized in that, The enclosure contains several electrical components for energy storage devices or energy storage AC devices.

8. The energy storage enclosure with a sealed structure according to claim 1, characterized in that, Each side of the box is connected to the top cover by three locking devices.

9. The energy storage enclosure with a sealed structure according to claim 1, characterized in that, The wall thickness of the box is equal to the wall thickness of the top cover.

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