Energy storage box

Abstract

The utility model provides an energy storage box. The energy storage box comprises a box body with an opening; the box door is arranged on the box body in an openable and closable manner; the first sealing structure is arranged around the opening, at least part of the first sealing structure is located between the box door and the box body, and the box door can be in sealing fit with the box body through the first sealing structure; and the second sealing structure is arranged on the inner wall surface of the box body, and the second sealing structure can seal the opening. According to the technical scheme of the utility model, the problem that the safety of an energy storage system is influenced because the sealing performance of the energy storage box body in the prior art is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage, and in particular to an energy storage box. Background Art

[0002] Energy storage systems are an integral part of the transformation of power systems and energy structures, enhancing the grid's regulatory capabilities and overall efficiency. The sealing and protective performance of energy storage enclosures is directly related to the safe and stable operation of the entire system.

[0003] In existing technology, energy storage enclosures are primarily sealed by compressing the enclosure's sealing strips with a door, achieving, for example, an IP55 protection rating. However, during installation and transportation, the door's sheet metal can deform, risking a reduction in the door's protection level. This increases the risk of condensation inside the enclosure, further compromising the safety of the energy storage system. Utility Model Content

[0004] The main purpose of the utility model is to provide an energy storage box to solve the problem that the sealing performance of the energy storage box in the prior art is poor, thereby affecting the safety of the energy storage system.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an energy storage box, including: a box body, having an opening; a box door, which is openably and closably arranged on the box body; a first sealing structure, which is arranged around the opening, at least part of the first sealing structure is located between the box door and the box body, and the box door can be sealed with the box body through the first sealing structure; a second sealing structure, which is arranged on the inner wall surface of the box body, and the second sealing structure can seal the opening.

[0006] Furthermore, connecting structures are provided around the opening, and the second sealing structure is sealed with the box body through the connecting structures.

[0007] Furthermore, the second sealing structure includes: a bag body, including a tightening end, the bag body can cover the opening, and the tightening end is sealed and fitted with the connecting structure.

[0008] Furthermore, the connection structure includes an annular connector, and the second sealing structure also includes an elastic tightening member, the tightening end is sleeved on the outer circumference of the annular connector, and the elastic tightening member is used to tighten the tightening end to the annular connector.

[0009] Furthermore, a first sealing member is provided on a side of the annular connector facing the bag body, and the bag body is sealed with the annular connector through the first sealing member.

[0010] Furthermore, the connection structure further includes an annular flange connected to the annular connector. The annular flange is located on the outer circumference of the annular connector and is arranged at an end of the annular connector away from the first sealing structure.

[0011] Furthermore, the first sealing member includes a first annular segment and a second annular segment that are connected and arranged at an angle, the first annular segment is fitted to the annular connector, and the second annular segment is fitted to the annular flange.

[0012] Furthermore, a second sealing member is provided on the side of the annular flange facing the bag body, and the bag body is sealed with the annular flange through the second sealing member.

[0013] Furthermore, along the radial direction of the annular flange, the annular flange has an inner end and an outer end that are oppositely arranged, the outer end of the annular flange is an arc-shaped structure, and the second sealing member is attached to the outer end of the annular flange.

[0014] Furthermore, the second sealing structure includes: an annular sealing body, having a radial first end and a radial second end arranged opposite to each other, the radial first end of the annular sealing body is sealed with the box body, and the radial second end is telescopically arranged; an elastic tightening member, arranged at the radial second end, the elastic tightening member is used to tighten the radial second end of the annular sealing body to close the internal through hole of the annular sealing body and make the annular sealing body seal the opening.

[0015] Furthermore, the connection structure includes an adhesive layer, which is located between the radial first end of the annular sealing body and the box body, and the annular sealing body is bonded to the box body through the adhesive layer.

[0016] Furthermore, the connection structure includes a pressing member connected to the box body, and the pressing member is located on a side of the annular sealing body facing away from the box body to press the radial first end of the annular sealing body against the box body.

[0017] Furthermore, a third sealing member is provided between the pressing member and the annular sealing body.

[0018] Furthermore, the second sealing structure also includes a pull-out piece connected to the elastic tightening piece, the elastic tightening piece is inserted into the radial second end of the annular sealing body, the pull-out piece extends out of the annular sealing body, and the elastic tightening piece is tightened by pulling the pull-out piece.

[0019] By applying the technical solution of the present invention, on the basis of providing the first sealing structure, a second sealing structure is added to the inner side of the box body, so that the opening is isolated from the external environment, which can prevent external impurities from entering the inner side of the box body, thereby providing secondary sealing protection for the energy storage box. The sealing performance of the energy storage box can be maintained during the hoisting, transportation and static storage of the energy storage box to achieve a better sealing effect. In this way, the risk of condensation inside the energy storage box can be reduced, thereby greatly improving the safety performance of the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings of the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and shall not constitute an improper limitation to the present utility model. In the drawings:

[0021] Figure 1 FIG. 4 shows a schematic structural diagram of the first embodiment of the energy storage box of the present utility model;

[0022] Figure 2 shows Figure 1 a cross-sectional view of the energy storage box of;

[0023] Figure 3 shows Figure 1 another cross-sectional view of the energy storage box of (wherein, the second sealing structure is not shown);

[0024] Figure 4 shows Figure 1 a schematic structural diagram of the second sealing structure of the energy storage box of;

[0025] Figure 5 FIG. 26 shows a schematic structural diagram of the second embodiment of the energy storage box of the present utility model;

[0026] Figure 6 shows Figure 5 a schematic structural diagram of the energy storage box of in a sealed state;

[0027] Figure 7 shows Figure 5 a cross-sectional view of the energy storage box of;

[0028] Figure 8 shows Figure 5 a schematic structural diagram of the second sealing structure of the energy storage box of.

[0029] Among them, the above-mentioned drawings include the following reference numerals:

[0030] 1. Second sealing structure; 2. Connection structure; 3. First seal; 31. First annular section; 32. Second annular section; 4. Second seal; 5. Box body; 6. First sealing structure; 7. Compression member; 8. Opening; 9. Third seal; 11. Bag body; 111. Tightening end; 12. Elastic tightening member; 13. Pulling member; 21. Annular connecting member; 22. Annular flange; 50. Annular sealing body; 51. Radial first end; 52. Radial second end. Detailed Description of the Invention

[0031] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] AsFigure 1 and Figure 2 As shown in Figure 2 , an embodiment of the present utility model provides an energy storage box. The energy storage box includes a box body 5 having an opening 8; a box door that is movably provided on the box body 5; a first sealing structure 6 that is arranged around the opening 8, and at least a part of the first sealing structure 6 is located between the box door and the box body 5, and the box door can be sealingly fitted with the box body 5 through the first sealing structure 6; a second sealing structure 1 that is arranged on the inner wall of the box body 5, and the second sealing structure 1 can seal the opening 8.

[0033] In the above technical solution, on the basis of setting the first sealing structure 6, a second sealing structure 1 is added inside the box body 5 to isolate the opening 8 from the external environment, which can prevent external impurities from entering the inside of the box body 5, so as to play a role of secondary sealing protection for the energy storage box. During the hoisting, transportation and static placement of the energy storage box, the sealing performance of the energy storage box can be maintained to achieve a better sealing effect. In this way, the risk of condensation inside the energy storage box can be reduced, and thus the safety performance of the energy storage system can be greatly improved.

[0034] Specifically, in the embodiment of the present utility model, the first sealing structure 6 is an annular door-side sealing strip. The door-side sealing strip is an accessory for box body sealing, mainly used to improve the sealing performance of the box body and prevent the entry of dust and moisture. The material of the door-side sealing strip can be any one of PVC, ethylene propylene diene monomer (EPDM), silicone rubber, chloroprene rubber (CR), thermoplastic vulcanizate (TPV), etc.

[0035] Specifically, in the embodiment of the present utility model, the energy storage box further includes an annular mounting member for mounting the first sealing structure 6, and the first sealing structure 6 is sleeved on one end of the annular mounting member away from the second sealing structure 1.

[0036] As Figure 1 and Figure 2 shown in Figure 2 , in the embodiment of the present utility model, the energy storage box further includes a connecting structure 2. The connecting structure 2 is provided around the opening 8, and the second sealing structure 1 is sealingly fitted with the box body 5 through the connecting structure 2.

[0037] In the above technical solution, by arranging the connecting structure 2 in the circumferential direction of the opening 8, the second sealing structure 1 can be sealingly connected with the box body 5 through the connecting structure 2 in the circumferential direction of the opening 8 to seal the opening 8 and isolate the opening 8 from the external environment. In this way, on the basis of setting the first sealing structure 6, a secondary sealing protection effect can be achieved for the box body 5, thereby improving the overall sealing effect of the energy storage box and further enhancing the safety performance of the energy storage system.

[0038] In some embodiments, the connecting structure 2 is fixed to the box body 5 by welding to achieve complete sealing and fixation.

[0039] Specifically, in the embodiments of the present utility model, as Figure 1 shown, the outer contour of the connection structure 2 is a rectangle adapted to the opening 8, and the four corners of the rectangle are provided as arcs. In this way, the second sealing structure 1 can be completely attached to the connection structure 2, thereby avoiding the problem that the second sealing structure 1 is not closely attached to the connection structure 2 due to the straight edges of the connection structure 2, and further avoiding the phenomenon of affecting the protection level.

[0040] In one embodiment, the connection structure 2 may not be provided. In this way, the second sealing structure 1 can be directly bonded to the box body 5 to achieve a sealing fit.

[0041] Embodiment 1

[0042] As Figure 1 、 Figure 2 and Figure 4 shown, in Embodiment 1 of the present utility model, the second sealing structure 1 includes: a bag body 11, including a tightened end 111. The bag body 11 can cover the opening 8, and the tightened end 111 is hermetically attached to the connection structure 2.

[0043] Through the above settings, on the one hand, the tightened end 111 of the bag body can be sleeved on the connection structure 2 to seal the opening 8 with the bag body 11; on the other hand, the tightened end 111 is hermetically attached to the connection structure 2, which can reduce the probability of the bag body 11 coming off the connection structure 2, thereby improving the installation stability of the bag body 11.

[0044] Specifically, in Embodiment 1 of the present utility model, the bag body 11 is made of a stretchable transparent film. The material of the stretchable transparent film can be one of flame-retardant insulating materials such as PVC and PE. The bag body 11 is attached to the connection structure 2 by a tightening force, or the tightened end 111 can be directly bonded to the connection structure 2. In this way, the bag body 11 has stretch elasticity, and the stretch elasticity can enable a certain sealing level between the bag body 11 and the connection structure 2, thereby achieving a sealing effect; among them, the stretch elasticity refers to the ability of a material to deform when subjected to an external force and to return to its original state after the external force is removed.

[0045] As Figures 1 to 4 shown, in Embodiment 1 of the present utility model, the connection structure 2 includes an annular connecting member 21, and the second sealing structure 1 further includes an elastic tightening member 12. The tightened end 111 is sleeved on the outer periphery of the annular connecting member 21, and the elastic tightening member 12 is used to tighten the tightened end 111 on the annular connecting member 21.

[0046] In the above technical solution, by providing the elastic tightening member 12, the tightened end 111 of the second sealing structure 1 can be closely attached to the outer periphery of the annular connecting member 21 to achieve a better sealing effect.

[0047] In some embodiments, the elastic tightening member 12 is an elastic cord with high elasticity, and its material can be any one of flame-retardant insulating materials such as polyester and high-elastic yarn.

[0048] In some embodiments, a magnetic member can also be provided to use the magnetic attraction property of the magnetic member to mount the tightening mouth end 111 on the outer periphery of the annular connecting member 21 and make the tightening mouth end 111 fit against the outer wall of the annular connecting member 21. Whether using the magnetic attraction mounting method or using the elastic tightening member 12 for mounting, when the energy storage box enters the installation and debugging stage, the operator can quickly disassemble the second sealing structure 1 from the connecting structure 2 and can choose to continue using or discard it.

[0049] As Figures 2 to 4 shown, in the first embodiment of the present invention, a first sealing member 3 is provided on the side of the annular connecting member 21 facing the bag body 11, and the bag body 11 is in sealing cooperation with the annular connecting member 21 through the first sealing member 3.

[0050] In the above technical solution, compared with the surface of the bag body 11 directly contacting the annular connecting member 21, by additionally providing the first sealing member 3, the elastic tightening member 12 presses the first sealing member 3 between the annular connecting member 21 and the bag body 11 through the tightening force to form a seal. In this way, the sealing effect between the bag body 11 and the annular connecting member 21 can be improved.

[0051] Specifically, in the first embodiment of the present invention, the first sealing member 3 is made of one of flexible materials such as silicone rubber, PVC, and polyurethane, and the first sealing member 3 is adhered to the annular connecting member 21.

[0052] In some embodiments, the magnetic member can also be used to press the first sealing member 3 between the annular connecting member 21 and the bag body 11 through the magnetic attraction property to form a seal.

[0053] As Figures 1 to 3 shown, in the first embodiment of the present invention, the connecting structure 2 further includes an annular flange 22 connected to the annular connecting member 21. The annular flange 22 is located on the outer peripheral side of the annular connecting member 21 and is provided at one end of the annular connecting member 21 facing away from the first sealing structure 6.

[0054] In the above technical solution, by providing the annular flange 22, the bag body 11 can be tensioned to prevent the bag body 11 from detaching from the annular connecting member 21, thereby achieving stable sealing.

[0055] Specifically, in the first embodiment of the present invention, an angle is formed between the annular flange 22 and the annular connecting member 21, and the angle is 90°. In this way, the bag body 11 can be better tensioned, thereby preventing the bag body 11 from detaching from the annular connecting member 21.

[0056] In some embodiments, the connecting structure 2 may not be provided with the annular flange 22, and only the annular connecting member 21 is provided.

[0057] As Figure 3 shown, in the first embodiment of the present utility model, the first seal 3 includes a first annular section 31 and a second annular section 32 which are connected and arranged at an angle. The first annular section 31 is attached to the annular connecting member 21, and the second annular section 32 is attached to the annular flange 22.

[0058] Through the above arrangement, no matter which one of the first annular section 31 and the second annular section 32 the tightening end 111 of the bag body 11 contacts, the sealing cooperation between the first seal 3 and the bag body 11 can be realized, so as to achieve a better sealing effect.

[0059] Specifically, in the first embodiment of the present utility model, the angle between the first annular section 31 and the second annular section 32 is 90°, that is Figure 3 the cross-section of the first seal 3 on the left side of the annular connecting member 21 is L-shaped.

[0060] As Figure 3 and Figure 4 shown, in the first embodiment of the present utility model, a second seal 4 is provided on the side of the annular flange 22 facing the bag body 11, and the bag body 11 is in sealing cooperation with the annular flange 22 through the second seal 4.

[0061] Through the above arrangement, on the one hand, the bag body 11 presses the second seal 4 between the annular flange 22 and the bag body 11 through the tightening force to form a secondary seal; on the other hand, the second seal 4 can also prevent the connecting structure 2 from scratching the bag body 11, resulting in a reduction in sealing performance.

[0062] Specifically, in the first embodiment of the present utility model, the second seal 4 is made of a flexible material such as silicone rubber, PVC, and polyurethane, and the second seal 4 is pasted on the annular flange 22.

[0063] It should be noted that in the first embodiment of the present utility model, the first seal 3 and the second seal 4 can be a split structure or an integral structure.

[0064] As Figure 3 shown, in the first embodiment of the present utility model, along the radial direction of the annular flange 22, the annular flange 22 has an inner end and an outer end which are oppositely arranged. The outer end of the annular flange 22 is an arc structure, and the second seal 4 is attached to the outer end of the annular flange 22.

[0065] Through the above settings, sharp corners and other structures at the outer end of the annular flange 22 can be avoided, which can not only prevent the phenomenon of poor fitting between the second seal 4 and the annular flange 22, but also avoid scratching the second seal 4, thus avoiding affecting the sealing and protection effect.

[0066] Preferably, in the first embodiment of the present invention, as Figure 2 shown, the edge of the annular flange 22 adopts a hemming design to form the above-mentioned arc structure. Among them, hemming is a sheet metal processing technology, which means bending the sheet metal part to form a double-layer structure.

[0067] Embodiment Two

[0068] As Figures 5 to 8 shown, the difference between the second embodiment of the present invention and the first embodiment lies in that the second sealing structure 1 includes: an annular sealing body 50, having a radially first end 51 and a radially second end 52 arranged oppositely. The radially first end 51 of the annular sealing body 50 is sealingly connected to the box body 5, and the radially second end 52 is telescopically arranged; an elastic tightening member 12 is arranged at the radially second end 52, and the elastic tightening member 12 is used to tighten the radially second end 52 of the annular sealing body 50 to close the internal through hole of the annular sealing body 50 and seal the opening 8 of the annular sealing body 50.

[0069] In the above technical solution, by making the elastic tightening member 12 in a tightened state, the radially second end 52 moves towards the center direction of the opening 8 relative to the radially first end 51, so that the through hole inside the annular sealing body 50 changes from an open state to a closed state. In this way, the opening 8 can be sealed by the second sealing structure 1 to prevent external impurities from entering the box body 5 through the opening 8, thereby realizing secondary sealing of the box body 5.

[0070] It should be noted that in the second embodiment of the present invention, the annular sealing body 50 is made of a telescopic transparent film, and the material of the telescopic transparent film can be one of flame-retardant insulating materials such as PVC and PE.

[0071] Specifically, in the second embodiment of the present invention, in the free state, the internal through hole surrounded by the radially second end 52 is similar in size to the opening 8 of the box body 5.

[0072] In some embodiments, the opening 8 is rectangular, and the internal through hole surrounded by the radially second end 52 is rectangular. The width of the internal through hole surrounded by the radially second end 52 is A (i.e., the width of the internal through hole in the Figure 7 left-right direction), and the width of the opening 8 is B (the width of the opening 8 in the Figure 7The width in the left and right directions), wherein the size of the inner through hole surrounded by the second radial end 52 is similar to the size of the opening 8 of the box body 5, which means that A / B is greater than or equal to 0.8; similarly, the ratio of the height of the inner through hole to the height of the opening 8 is also greater than or equal to 0.8, and the height is Figure 6 The height in the vertical direction.

[0073] Specifically, in the second embodiment of the present invention, when the energy storage box is installed and debugged, the elastic tightening member 12 can be manually loosened to restore the radial second end 52 of the annular sealing body 50 to a free state, and the box can be selected to continue to be used or discarded.

[0074] like Figures 5 to 8 As shown, in the second embodiment of the present invention, the connection structure 2 includes a clamping member 7 connected to the box body 5. The clamping member 7 is located on the side of the annular sealing body 5 facing away from the box body 5 to press the radial first end 51 of the annular sealing body 50 against the box body 5.

[0075] In the above technical solution, by providing the pressing member 7 , the radial first end of the annular sealing body 50 can be pressed and firmly fixed on the inner wall surface of the box body 5 , so that the annular sealing body 50 can be sealed and fitted on the inner wall of the box body 5 .

[0076] Specifically, in the second embodiment of the present invention, the pressing member 7 is a pressing plate, which is connected to the box body 5 by screw connection or the like, so that the annular sealing body 50 is pressed against the box body 5 by the pressing plate.

[0077] like Figures 5 to 8 As shown, in the second embodiment of the present invention, a third sealing member 9 is provided between the pressing member 7 and the annular sealing body 50 .

[0078] Through the above-mentioned arrangement, on the one hand, the third seal 9 can prevent the pressing member 7 from damaging the annular sealing body 50; on the other hand, by arranging the third seal 9, the friction between the pressing member 7 and the annular sealing body 50 can be increased, so that the annular sealing body 50 can be more stably installed between the pressing member 7 and the box body 5, thereby achieving a better sealing effect.

[0079] Specifically, in the second embodiment of the present invention, the third sealing member 9 is made of a flexible material.

[0080] In some embodiments, the connection structure 2 includes an adhesive layer, which is located between the radial first end 51 of the annular sealing body 50 and the housing 5 , and the annular sealing body 50 is bonded to the housing 5 through the adhesive layer.

[0081] In the above technical solution, by providing an adhesive layer, the radial first end 51 of the annular sealing body 50 can be bonded to the box body 5 to achieve a sealed connection.

[0082] Specifically, in the second embodiment of the present utility model, the annular sealing body 50 is adhesively bonded to the box body 5 with glue.

[0083] As Figures 5 to 8 shown, in the second embodiment of the present utility model, the second sealing structure 1 further includes a pulling member 13 connected to the elastic tightening member 12. The elastic tightening member 12 is disposed through the radial second end 52 of the annular sealing body 50, and the pulling member 13 extends out of the annular sealing body 50. The elastic tightening member 12 is tightened by pulling the pulling member 13.

[0084] With the above arrangement, when the pulling member 13 is manually pulled, the elastic tightening member 12 can be tightened, thereby driving the radial second end 52 of the annular sealing body 50 to contract and close the internal through hole. Then, the tightened radial second end 52 can be tied with the pulling member 13 to close the opening 8, thereby achieving the sealing effect.

[0085] As Figures 5 to 8 shown, in the second embodiment of the present utility model, the elastic tightening member 12 and the pulling member 13 are integrally formed. In this way, it is convenient for production and processing.

[0086] In some embodiments, the elastic tightening member 12 and the pulling member 13 are separately provided. In this way, it is easy to replace and maintain.

[0087] It should be noted that in the second embodiment of the present utility model, the second sealing structure 1 has a simple structure, and the installation and disassembly processes are relatively simple. When installing and disassembling the second sealing structure 1, it does not affect the installation and maintenance of the energy storage box.

[0088] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: In the above technical solution, on the basis of setting the first sealing structure, a second sealing structure is added inside the box body to isolate the opening from the external environment, which can prevent external impurities from entering the inside of the box body, so as to play a role of secondary sealing protection for the energy storage box. During the hoisting, transportation, and static placement of the energy storage box, the sealing performance of the energy storage box can be maintained to achieve a better sealing effect. In this way, the risk of condensation inside the energy storage box can be reduced, thereby greatly improving the safety performance of the energy storage system.

[0089] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A energy storage box, characterized in that, include: A box (5) having an opening (8); A box door is arranged on the box body (5) in an openable and closable manner; a first sealing structure (6) disposed around the opening (8), at least a portion of the first sealing structure (6) being located between the box door and the box body (5), and the box door being able to seal with the box body (5) through the first sealing structure (6); A second sealing structure (1) is provided on the inner wall surface of the box body (5), and the second sealing structure (1) is capable of sealing the opening (8).

2. The energy storage box according to claim 1, wherein The energy storage box further comprises a connecting structure (2), the connecting structure (2) being provided around the opening (8), and the second sealing structure (1) is sealed with the box body (5) via the connecting structure (2).

3. The energy storage box according to claim 2, characterized in that, The second sealing structure (1) comprises: The bag body (11) comprises a tightening end (111), and the bag body (11) can cover the opening (8), and the tightening end (111) is sealed and fitted with the connecting structure (2).

4. The energy storage box according to claim 3, characterized in that, The connecting structure (2) includes an annular connecting piece (21), and the second sealing structure (1) also includes an elastic tightening piece (12). The tightening end (111) is sleeved on the outer periphery of the annular connecting piece (21), and the elastic tightening piece (12) is used to tighten the tightening end (111) to the annular connecting piece (21).

5. The energy storage box according to claim 4, wherein, A first sealing member (3) is provided on the side of the annular connecting member (21) facing the bag body (11), and the bag body (11) is sealed and matched with the annular connecting member (21) through the first sealing member (3).

6. The energy storage box according to claim 5, characterized in that The connection structure (2) further comprises an annular flange (22) connected to the annular connection member (21), wherein the annular flange (22) is located on the outer peripheral side of the annular connection member (21) and is arranged at an end of the annular connection member (21) facing away from the first sealing structure (6).

7. The energy storage box according to claim 6, wherein The first sealing member (3) comprises a first annular segment (31) and a second annular segment (32) which are connected and arranged at an angle, the first annular segment (31) being fitted to the annular connector (21), and the second annular segment (32) being fitted to the annular flange (22).

8. The energy storage box according to claim 6, characterized in that, A second sealing member (4) is provided on the side of the annular flange (22) facing the bag body (11), and the bag body (11) is sealed and matched with the annular flange (22) through the second sealing member (4).

9. The energy storage box according to claim 8, characterized in that, Along the radial direction of the annular flange (22), the annular flange (22) has an inner end and an outer end that are arranged opposite to each other, the outer end of the annular flange (22) is an arc-shaped structure, and the second sealing member (4) is attached to the outer end of the annular flange (22).

10. The energy storage box according to claim 2, characterized in that, The second sealing structure (1) comprises: An annular sealing body (50) has a radial first end (51) and a radial second end (52) that are arranged opposite to each other, wherein the radial first end (51) of the annular sealing body (50) is sealedly connected to the box (5), and the radial second end (52) is telescopically arranged; An elastic tightening member (12) is provided at the second radial end (52). The elastic tightening member (12) is used to tighten the second radial end (52) of the annular sealing body (50) to close the internal through hole of the annular sealing body (50) and make the annular sealing body (50) seal the opening (8).

11. The energy storage box according to claim 10, characterized in that, The connecting structure (2) includes an adhesive layer, and the adhesive layer is located between the first radial end (51) of the annular sealing body (50) and the box body (5). The annular sealing body (50) is adhered to the box body (5) through the adhesive layer.

12. The energy storage box according to claim 10, characterized in that, The connecting structure (2) includes a pressing member (7) connected to the box body (5). The pressing member (7) is located on the side of the annular sealing body (50) away from the box body (5) to press the first radial end (51) of the annular sealing body (50) against the box body (5).

13. The energy storage box according to claim 12, wherein, A third sealing member (9) is provided between the pressing member (7) and the annular sealing body (50).

14. The energy storage box according to claim 10, characterized in that, The second sealing structure (1) further includes a pulling member (13) connected to the elastic tightening member (12). The elastic tightening member (12) is disposed inside the second radial end (52) of the annular sealing body (50). The pulling member (13) extends out of the annular sealing body (50), and the elastic tightening member (12) is tightened by pulling the pulling member (13).

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