Box body side plate, energy storage box body and energy storage system

Abstract

The utility model discloses a box body side plate, an energy storage box body and an energy storage system, and relates to the technical field of energy storage. The box body side plate comprises a plate body which comprises an outer plate and an inner plate which are oppositely arranged, and a fireproof heat preservation layer and a reinforcing structure which are located between the outer plate and the inner plate; the reinforcing structure comprises a first framework and a second framework, the first framework is fixedly connected with the outer plate, the second framework is fixedly connected with the inner plate, and an air gap exists between the first framework and the second framework. According to the embodiment, the first framework fixedly connected with the outer plate and the second framework fixedly connected with the inner plate are arranged between the outer plate and the inner plate, and meanwhile, the air gap is formed between the first framework and the second framework, so that heat insulation between the first framework and the second framework is achieved on the basis that the structural strength of the outer plate and the inner plate is improved; in other words, heat transfer between the first framework and the second framework is reduced, and therefore the heat insulation effect of the box side plate is improved on the basis that the structural strength of the plate body is guaranteed.

Description

Technical Field

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

[0002] With the development of energy storage systems, the area utilization rate of the floor space of energy storage systems is increasingly required. For this reason, the energy storage boxes included in the energy storage systems are made into single-sided doors, and the arrangement of the energy storage systems is changed from the original dotted style to the "back-to-back, shoulder-to-shoulder" style. However, because the energy storage boxes are close to each other, in extreme cases, when one of the energy storage systems catches fire, the flames can easily burn through the side panels of the energy storage box and ignite the adjacent energy storage system, thus forming "system-level heat spread" and causing greater losses. Summary of the invention

[0003] A main purpose of the present application is to provide a box side panel, an energy storage box and an energy storage system that can effectively reduce heat transfer and reduce safety hazards.

[0004] In order to achieve the above application purpose, this application adopts the following technical solutions:

[0005] According to one aspect of the present application, a box side panel is provided, including: a panel body, including an outer panel and an inner panel arranged opposite to each other, and a fireproof insulation layer and a reinforcement structure located between the outer panel and the inner panel; the reinforcement structure includes a first frame and a second frame, the first frame is fixedly connected to the outer panel, the second frame is fixedly connected to the inner panel, and there is an air gap between the first frame and the second frame.

[0006] In the implementation mode of the present application, a first frame fixedly connected to the outer panel and a second frame fixedly connected to the inner panel are respectively arranged between the outer panel and the inner panel, and an air gap is formed between the first frame and the second frame, so as to achieve heat insulation between the first frame and the second frame on the basis of increasing the structural strength of the outer panel and the inner panel, that is, to reduce the transfer of heat between the first frame and the second frame, thereby improving the heat insulation effect of the side panel of the box body on the basis of ensuring the structural strength of the plate body.

[0007] According to one embodiment of the present application, an air layer is formed between the first skeleton and the second skeleton.

[0008] According to an embodiment of the present application, the reinforcement structure further includes reinforcement ribs, the reinforcement ribs are rod-shaped structures, and two ends of the reinforcement ribs are respectively fixedly connected to the first frame and the second frame.

[0009] In the implementation mode of the present application, the support of the first frame and the second frame is achieved by setting reinforcing ribs, thereby increasing the structural strength of the plate in the thickness direction of the plate. At the same time, since the first frame and the second frame are in point contact, the heat transfer between the first frame and the second frame is effectively reduced, thereby ensuring the thermal insulation effect of the plate.

[0010] According to one embodiment of the present application, the reinforcement structure further includes a support body, which is located between the first skeleton and the second skeleton, and the cross-sectional dimension of the support body parallel to the plate body gradually decreases in the direction toward the first skeleton and / or the second skeleton.

[0011] In the implementation mode of the present application, the support of the first skeleton and the second skeleton is achieved through the provision of the support body, thereby increasing the structural strength of the plate body in the thickness direction of the plate body. At the same time, the cross-sectional size of the support body decreases in the direction toward the first skeleton and / or the second skeleton, thereby effectively reducing the heat transfer between the first skeleton and the second skeleton and ensuring the thermal insulation effect of the plate body.

[0012] According to one embodiment of the present application, the support body is a conical structure or a pyramidal structure, the bottom surface of the support body is fixedly connected to one of the first skeleton and the second skeleton, and the tip of the support body is abutted against the other of the first skeleton and the second skeleton.

[0013] In the implementation manner of the present application, due to the pointed end of the support body, point contact between the first frame and the second frame is achieved, thereby effectively reducing the heat transfer between the first frame and the second frame, thereby ensuring the thermal insulation effect of the board.

[0014] According to an embodiment of the present application, the support body has a first tip and a second tip facing away from each other, the first tip abuts against the first skeleton, and the second tip abuts against the second skeleton.

[0015] In the implementation manner of the present application, since the support body is in point contact with the first frame and the second frame, not only the heat transfer between the first frame and the support body is reduced, but also the heat transfer between the second frame and the support body is reduced, thereby effectively ensuring the thermal insulation effect of the board.

[0016] According to one embodiment of the present application, two opposite surfaces of the first skeleton and the second skeleton both have a thermal insulation coating.

[0017] In the implementation manner of the present application, the provision of the thermal insulation coating further reduces the heat transfer between the first frame and the second frame, thereby further improving the thermal insulation effect of the plate.

[0018] According to an embodiment of the present application, the box side panel further includes an edge sealing portion, which surrounds the edge of the panel body and is fixedly connected to both the outer panel and the inner panel.

[0019] According to one aspect of the present application, there is provided an energy storage box, comprising a bottom plate, a top plate and a plurality of box side plates as described in the first aspect above; the bottom plate, the top plate and the plurality of box side plates form a accommodating cavity, and the accommodating cavity is used to accommodate an energy storage unit.

[0020] In the implementation manner of the present application, in combination with the above-mentioned box side panels, the heat insulation effect of the energy storage box can be effectively improved, avoiding the situation where flames burn among multiple energy storage boxes, thereby improving safety.

[0021] According to one embodiment of the present application, the energy storage box further includes a plurality of partitions, and the structure of the partitions is the same as the structure of the side panels of the box; the plurality of partitions are located in the accommodating cavity, and the accommodating cavity is sequentially divided into an electrical compartment and a plurality of energy storage compartments, the plurality of energy storage compartments are located on the same side of the electrical compartment, and the plurality of energy storage compartments are all used to accommodate the energy storage units.

[0022] In the implementation mode of the present application, the structure of the partition is the same as the structure of the side panel of the box, so that the partition also has a certain heat insulation effect. In this way, after the energy storage unit catches fire, the heat transfer between the battery compartment and the electrical compartment, and between two adjacent battery compartments can be reduced, thereby reducing the spread of fire in the energy storage box.

[0023] According to one aspect of the present application, there is provided an energy storage system, comprising an energy storage unit and the energy storage box as described in the above aspect, wherein a plurality of the energy storage units are accommodated in the accommodation cavity.

[0024] In the implementation manner of the present application, in combination with the energy storage box described above, after the energy storage unit catches fire, the transfer of heat generated by the flame to the adjacent energy storage box can be reduced, thereby reducing the possibility of fire in the adjacent energy storage system, and reducing the safety hazards of energy storage systems arranged in a "back-to-back" and / or "shoulder-to-shoulder" manner.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0027] Figure 1 It is a schematic diagram of the right-axle structure of an energy storage box according to an exemplary embodiment.

[0028] Figure 2 It is a schematic diagram of the main structure of an energy storage box according to an exemplary embodiment.

[0029] Figure 3 yes Figure 2 The cross-sectional structure diagram of the energy storage box along line AA is shown.

[0030] Figure 4 yes Figure 3 A partial enlarged structural schematic diagram of the energy storage box is shown.

[0031] Figure 5 It is a schematic diagram of the partial structure of another box side panel according to an exemplary embodiment.

[0032] Figure 6 It is a partial structural schematic diagram of another box side panel according to an exemplary embodiment.

[0033] Figure 7 It is a partial structural schematic diagram of another box side panel according to an exemplary embodiment.

[0034] The reference numerals are described as follows:

[0035] 100. Energy storage box;

[0036] 10. Bottom plate; 20. Top plate; 30. Box side plate; 40. Partition plate;

[0037] 31. Outer plate; 32. Inner plate; 33. Fireproof insulation layer; 34. Strengthening structure;

[0038] 341. First frame; 342. Second frame; 343. Reinforcing ribs; 344. Support body. DETAILED DESCRIPTION

[0039] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0040] The embodiment of the present application provides an energy storage system, which may be an energy storage container composed of energy storage units, etc. The energy storage units may be battery packs, battery boxes, battery clusters, etc. The energy storage system includes an energy storage box 100 and a plurality of energy storage units, the energy storage box 100 having a receiving cavity, and the plurality of energy storage units are received in the receiving cavity.

[0041] In some embodiments, Figure 1As shown, the energy storage box 100 includes a bottom plate 10, a top plate 20 and a plurality of box side plates 30, and the bottom plate 10, the top plate 20 and the plurality of box side plates 30 are fixedly connected and enclose a receiving cavity.

[0042] Among them, the multiple box side panels 30 of the energy storage box 100 include a front side panel, a back side panel, a left side panel and a right side panel. Usually, an energy storage cabinet door is provided on the front side panel to facilitate the installation or replacement of the energy storage unit in the accommodating cavity of the energy storage box 100 when the energy storage cabinet door is in an open state.

[0043] In some embodiments, Figure 1 As shown, the energy storage box 100 also includes a plurality of partitions 40, which are located in the accommodating cavity to divide the accommodating cavity into an electrical compartment and a plurality of energy storage compartments in sequence, the plurality of energy storage compartments are located on the same side of the electrical compartment, and a plurality of energy storage units are located in the energy storage compartments.

[0044] The electrical compartment is equipped with devices such as a battery management system, and multiple energy storage units are electrically connected to the battery management system so that the electrical parameters of the multiple energy storage units can be monitored through the battery management system to ensure the smooth operation of the multiple energy storage units.

[0045] The electrical compartment is located on the side close to the left panel or the right panel. For example, if the electrical compartment is located on the side close to the left panel, an electrical cabinet door is provided on the left panel, so that the electrical components (such as the battery management system) in the electrical compartment can be repaired or replaced when the electrical cabinet door is open.

[0046] Among them, the surface of the partition 40 facing the energy storage bin is provided with slide rails extending along the depth direction of the energy storage box 100 and spaced apart along the height direction, and multiple pairs of slide rails are provided on the opposite surfaces of two adjacent partitions 40, so that based on multiple pairs of slide rails, energy storage units located on each pair of slide rails can be placed in one energy storage bin, thereby improving the energy storage capacity of the energy storage system.

[0047] At present, in order to improve the area utilization rate of the floor space of the energy storage system, multiple energy storage systems are usually arranged in a "back-to-back" and / or "shoulder-to-shoulder" manner. At this time, for the energy storage systems arranged back-to-back, the back side panels included in the energy storage boxes 100 of the two energy storage systems are adjacent to each other; for the energy storage systems arranged shoulder-to-shoulder, the left side panels and right side panels of the energy storage boxes 100 of the two energy storage systems are adjacent to each other.

[0048] In the related art, the box side plate 30 of the energy storage box 100 mainly includes an outer plate 31 and an inner plate 32, and a support frame arranged between the outer plate 31 and the inner plate 32, and the support frame is fixedly connected to the outer plate 31 and the inner plate 32. In this way, after the energy storage unit in an energy storage box 100 catches fire, since the support frame directly connects the inner plate 32 and the outer plate 31, the heat generated by the flame can be directly transferred to the energy storage box 100 of the adjacent energy storage system along the inner plate 32, the support frame, and the outer plate 31, thereby causing the adjacent energy storage system to catch fire.

[0049] The embodiment of the present application provides a box side panel 30 that can improve the heat insulation effect. In this way, for the energy storage box 100 having the box side panel 30, the heat insulation effect of the energy storage box 100 can be improved, and the situation of flame burning between multiple energy storage boxes 100 can be avoided, thereby improving safety. Furthermore, for the energy storage system including the energy storage box 100, after the energy storage unit in the energy storage box 100 catches fire, the heat generated by the flame can be reduced. Transfer to the adjacent energy storage box 100, thereby reducing the fire of the adjacent energy storage system, reducing the safety hazards of the energy storage system arranged in a "back-to-back" and / or "shoulder to shoulder" manner.

[0050] In addition, for the partition 40 disposed in the accommodating cavity of the energy storage box 100, as Figure 1 As shown, the partition 40 can be a structure composed of a plurality of strip-shaped plate ribs, or it can be Figure 2 and Figure 3 When the structure of the partition 40 is the same as or similar to that of the box side plate 30, the partition 40 also has a certain heat insulation effect, so that for the electrical components in the electrical compartment and the energy storage unit in the battery compartment, after the energy storage unit catches fire, the heat transfer between the battery compartment and the electrical compartment, and between two adjacent battery compartments can be reduced, thereby reducing the spread of the fire in the energy storage box 100 and improving the safety of a single energy storage system.

[0051] like Figure 3 and Figure 4 As shown, the box side panel 30 includes: a plate body, including an outer panel 31 and an inner panel 32 arranged opposite to each other, and a fireproof insulation layer 33 and a reinforcement structure 34 located between the outer panel 31 and the inner panel 32; the reinforcement structure 34 includes a first frame 341 and a second frame 342, the first frame 341 is fixedly connected to the outer panel 31, the second frame 342 is fixedly connected to the inner panel 32, and there is an air gap between the first frame 341 and the second frame 342.

[0052] In the embodiment of the present application, a first frame 341 fixedly connected to the outer panel 31 and a second frame 342 fixedly connected to the inner panel 32 are respectively arranged between the outer panel 31 and the inner panel 32, and an air gap is formed between the first frame 341 and the second frame 342 to achieve heat insulation between the first frame 341 and the second frame 342 on the basis of increasing the structural strength of the outer panel 31 and the inner panel 32, that is, to reduce the heat transfer between the first frame 341 and the second frame 342, thereby improving the heat insulation effect of the box side panel 30 on the basis of ensuring the structural strength of the plate body.

[0053] The outer plate 31 and the inner plate 32 may be skin plates, or plates of other materials. The fireproof and heat-insulating layer 33 is arranged in the area between the outer plate 31 and the inner plate 32 except the reinforcing structure 34. The reinforcing structure 34 includes a first frame 341 and a second frame 342 which may be fixedly connected to the outer plate 31 and the inner plate 32 respectively by welding or bonding.

[0054] Optionally, the surface of the outer plate 31 facing the inner plate 32 and the surface of the inner plate 32 facing the outer plate 31 both have a thermal insulation coating, so that the thermal insulation effect of the plate body is further improved by the provision of the thermal insulation coating.

[0055] Optionally, the two opposite surfaces of the first skeleton 341 and the second skeleton 342 both have thermal insulation coatings, that is, the surface of the first skeleton 341 facing the second skeleton 342, and the surface of the second skeleton 342 facing the first skeleton 341 both have thermal insulation coatings, so that the heat transfer between the first skeleton 341 and the second skeleton 342 can be further reduced by setting the thermal insulation coating, thereby further improving the thermal insulation effect of the plate.

[0056] In the implementation manner of the present application, for the first skeleton 341 and the second skeleton 342 arranged between the outer plate 31 and the inner plate 32, the first skeleton 341 and the second skeleton 342 can be block structures or strip structures, and the first skeleton 341 and the second skeleton 342 can be arranged opposite to each other. Of course, in the case where the first skeleton 341 and the second skeleton 342 are both strip structures, the first skeleton 341 and the second skeleton 342 can also be arranged crosswise and oppositely, and the implementation manner of the present application does not limit this.

[0057] Among them, a plurality of first frames 341 and a plurality of second frames 342 are arranged between the outer plate 31 and the inner plate 32, so that the structural strength of the outer plate 31 and the structural strength of the inner plate 32 are increased as a whole through the arrangement of the plurality of first frames 341 and the plurality of second frames 342. The plurality of first frames 341 and the plurality of second frames 342 may correspond one to one, and the corresponding first frames 341 and the second frames 342 may be arranged in the above-mentioned directly opposite manner or in a cross-opposite manner.

[0058] For example, a plurality of first skeletons 341 and a plurality of second skeletons 342 are arranged between the outer plate 31 and the inner plate 32, and the first skeletons 341 and the second skeletons 342 are both strip structures. In this case, a plurality of first skeletons 341 can be arranged in the horizontal direction and spaced in the vertical direction, and a plurality of second skeletons 342 can be arranged in the vertical direction and spaced in the horizontal direction. In this case, there is an air gap between each first skeleton 341 and the plurality of second skeletons 342. Alternatively, the plurality of first skeletons 341 correspond to the plurality of second skeletons 342 one by one, and the plurality of first skeletons 341 and the plurality of second skeletons 342 are arranged in the vertical direction and spaced in the horizontal direction. In this case, the corresponding first skeletons 341 and the corresponding second skeletons 342 are opposite to each other and there is an air gap.

[0059] In the embodiment of the present application, the air gap formed between the first frame 341 and the second frame 342 can be as follows: Figure 4 As shown, an air layer is formed between the first frame 341 and the second frame 342, that is, the first frame 341 and the second frame 342 are completely not in contact. In this way, the heat transfer between the first frame 341 and the second frame 342 can be reduced to the maximum extent, and the heat insulation effect of the board body can be improved.

[0060] Of course, the surface of the first frame 341 facing the second frame 342 may also have convex teeth, and the tip of the convex teeth abuts against the second frame 342. In this way, through the provision of the convex teeth, on the one hand, the support of the first frame 341 and the second frame 342 is achieved, thereby increasing the structural strength of the board in the thickness direction of the board, and at the same time, since the first frame 341 and the second frame 342 are in point contact, the heat transfer between the first frame 341 and the second frame 342 is effectively reduced, thereby ensuring the heat insulation effect of the board.

[0061] In addition to providing protruding teeth on the surface of the first frame 341 to support the first frame 341 and the second frame 342, in some embodiments, such as Figure 5 As shown, the reinforcement structure 34 also includes a reinforcement rib 343, which is a rod-shaped structure, and the two ends of the reinforcement rib 343 are respectively fixedly connected to the first frame 341 and the second frame 342. In this way, through the arrangement of the reinforcement rib 343, the support of the first frame 341 and the second frame 342 is achieved, thereby increasing the structural strength of the plate in the thickness direction of the plate, and at the same time, since the first frame 341 and the second frame 342 are point contact, the heat transfer between the first frame 341 and the second frame 342 is effectively reduced, thereby ensuring the heat insulation effect of the plate.

[0062] The cross-section of the reinforcing rib 343 may be circular, square, etc., and the reinforcing rib 343 may be made of a heat-insulating material to reduce heat transfer on the reinforcing rib 343 .

[0063] Among them, the reinforcing rib 343 can be a linear structure, in which case the two ends of the reinforcing rib 343 can be fixedly connected to the end surfaces opposite to the first frame 341 and the second frame 342, or can be fixedly connected to the side surfaces of the first frame 341 and the second frame 342. Of course, the reinforcing rib 343 can also be a U-shaped structure, in which case the two ends of the reinforcing rib 343 are fixedly connected to the side surfaces of the first frame 341 and the second frame 342, so that the effective length of the reinforcing rib 343 can be increased, thereby effectively increasing the resistance to heat transfer on the reinforcing rib 343 and ensuring the thermal insulation effect of the plate.

[0064] In other embodiments, Figure 6 and Figure 7 As shown, the reinforcement structure 34 also includes a support body 344, which is located between the first frame 341 and the second frame 342, and the cross-sectional dimension of the support body 344 parallel to the plate body gradually decreases in the direction toward the first frame 341 and / or the second frame 342. In this way, through the arrangement of the support body 344, the support of the first frame 341 and the second frame 342 is achieved, thereby increasing the structural strength of the plate body in the thickness direction of the plate body, and at the same time, the cross-sectional dimension of the support body 344 decreases in the direction toward the first frame 341 and / or the second frame 342, thereby effectively reducing the heat transfer between the first frame 341 and the second frame 342, and ensuring the heat insulation effect of the plate body.

[0065] Alternatively, if Figure 6 As shown, the support body 344 is a conical structure or a pyramidal structure, the bottom surface of the support body 344 is fixedly connected to one of the first frame 341 and the second frame 342, and the tip of the support body 344 abuts against the other of the first frame 341 and the second frame 342.

[0066] Among them, the support body 344 is fixedly connected to the first frame 341 or the second frame 342, so as to facilitate the assembly of the reinforcing structure 34 between the outer panel 31 and the inner panel 32. At the same time, due to the pointed end of the support body 344, point contact between the first frame 341 and the second frame 342 is achieved, thereby effectively reducing the heat transfer between the first frame 341 and the second frame 342, thereby ensuring the thermal insulation effect of the plate body.

[0067] Alternatively, if Figure 7 As shown, the support body 344 has a first tip and a second tip facing each other, the first tip abuts against the first skeleton 341 , and the second tip abuts against the second skeleton 342 .

[0068] The support body 344 can be installed between the first frame 341 and the second frame 342 by abutting, that is, the first tip and the second tip of the support body 344 are simply in contact with the first frame 341 and the second frame 342 respectively; it can also be installed between the first frame 341 and the second frame 342 by spot welding, that is, the first tip and the second tip of the support body 344 are welded to the first frame 341 and the second frame 342 respectively by spot welding. Since the support body 344 is in point contact with the first frame 341 and the second frame 342, not only the heat transfer between the first frame 341 and the support body 344 is reduced, but also the heat transfer between the second frame 342 and the support body 344 is reduced, so the heat insulation effect of the board can be effectively guaranteed.

[0069] It should be noted that one support body 344 can be set between the first frame 341 and the second frame 342, or multiple support bodies 344 can be set, as long as the supporting strength between the first frame 341 and the second frame 342 can be guaranteed and the heat transfer between the first frame 341 and the second frame 342 can be effectively reduced. The implementation mode of the present application does not limit this.

[0070] In some embodiments, the box side panel 30 further includes an edge sealing portion, which surrounds the edge of the panel and is fixedly connected to both the outer panel 31 and the inner panel 32. In this way, the edge sealing portion can not only seal the panel, but also increase the structural strength of the panel, and facilitate the fixed connection between the box side panel 30 and the bottom panel 10 and the top panel 20 described above.

[0071] In the embodiments of the present application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0072] In the description of the implementation methods of the present application, it needs to be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the implementation methods of the present application and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the implementation methods of the present application.

[0073] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the implementation of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0074] The above are only preferred embodiments of the implementation methods of the present application, and are not intended to limit the implementation methods of the present application. For those skilled in the art, the implementation methods of the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the implementation methods of the present application shall be included in the protection scope of the implementation methods of the present application.

Claims

1. A box side panel (30), characterized in that: include: The plate body comprises an outer plate (31) and an inner plate (32) arranged opposite to each other, and a fireproof and heat-insulating layer (33) and a reinforcing structure (34) located between the outer plate (31) and the inner plate (32); The reinforcement structure (34) includes a first frame (341) and a second frame (342), wherein the first frame (341) is fixedly connected to the outer panel (31), and the second frame (342) is fixedly connected to the inner panel (32), and an air gap exists between the first frame (341) and the second frame (342).

2. The box side panel (30) according to claim 1, characterized in that: An air layer is formed between the first frame (341) and the second frame (342).

3. The box side plate (30) according to claim 2, characterized in that: The reinforcement structure (34) further comprises a reinforcement rib (343), wherein the reinforcement rib (343) is a rod-shaped structure, and two ends of the reinforcement rib (343) are respectively fixedly connected to the first frame (341) and the second frame (342).

4. The box side panel (30) according to claim 1, characterized in that: The reinforcing structure (34) also includes a support body (344), which is located between the first frame (341) and the second frame (342), and the cross-sectional dimensions of the support body (344) parallel to the plate body gradually decrease in the direction toward the first frame (341) and / or the second frame (342).

5. The box side plate (30) according to claim 4, characterized in that: The support body (344) is a conical structure or a pyramidal structure, the bottom surface of the support body (344) is fixedly connected to one of the first frame (341) and the second frame (342), and the tip of the support body (344) is abutted against the other of the first frame (341) and the second frame (342).

6. The box side plate (30) according to claim 4, characterized in that: The support body (344) has a first tip and a second tip facing each other, the first tip abuts against the first frame (341), and the second tip abuts against the second frame (342).

7. The box side panel (30) according to any one of claims 1 to 6, characterized in that: Two opposing surfaces of the first frame (341) and the second frame (342) are provided with heat-insulating coatings.

8. The box side panel (30) according to any one of claims 1 to 6, characterized in that: The box body side plate (30) further comprises an edge sealing portion, which surrounds the edge of the plate body and is fixedly connected to both the outer plate (31) and the inner plate (32).

9. An energy storage box (100), characterized in that: It comprises a bottom plate (10), a top plate (20) and a plurality of box side plates (30) according to any one of claims 1 to 8; The bottom plate (10), the top plate (20) and the plurality of box side plates (30) form a receiving cavity, and the receiving cavity is used to receive the energy storage unit.

10. The energy storage box (100) according to claim 9, characterized in that: The energy storage box (100) further comprises a plurality of partitions (40), and the structure of the partitions (40) is the same as that of the box side plates (30); The plurality of partitions (40) are located in the accommodating cavity, and divide the accommodating cavity into an electrical compartment and a plurality of energy storage compartments in sequence. The plurality of energy storage compartments are located on the same side of the electrical compartment, and the plurality of energy storage compartments are all used to accommodate the energy storage units.

11. An energy storage system, characterized in that: It comprises an energy storage unit and the energy storage box (100) according to claim 9 or 10, wherein a plurality of the energy storage units are accommodated in the accommodating cavity.

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