Energy storage container and electric device

Abstract

An energy storage container and an electric device, relating to the technical field of batteries. The energy storage container comprises: a container body, the container body having an accommodating cavity and an opening in communication with the accommodating cavity; a cover plate, the cover plate being connected to the container body and covering the opening; and a pull fastener assembly, the pull fastener assembly comprising a first connector and a second connector, the first connector being connected to the container body, the second connector being connected to the cover plate, and the first connector and the second connector being in limiting connection with each other. After the cover plate seals the opening and is normally connected to the container body, the cover plate is further connected to the container body via the first connector and the second connector that are in limiting connection with each other, thereby improving the firmness of the connection between the cover plate and the container body, and preventing the cover plate from detaching and flying off the container body when an explosion occurs in the energy storage container, improving the safety of the energy storage container.

Description

Energy storage boxes and electrical equipment

[0001] This application claims priority to Chinese Patent Application No. 202422747988X, filed on November 11, 2024, entitled “Energy Storage Box and Electrical Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application belongs to the field of battery technology, and specifically relates to an energy storage box and electrical equipment. Background Technology

[0003] As a container for storing energy storage devices such as batteries, the safety of energy storage boxes is of paramount importance. During repeated use, batteries may experience extreme situations such as thermal runaway, leading to an explosion inside the energy storage box. Excessive explosion pressure may cause the box cover to detach and fly out of the box, reducing safety. Summary of the Invention

[0004] Purpose of this application: This application provides an energy storage box to overcome the technical problem that the cover of the energy storage box will detach from the box and fly out when an explosion occurs inside the energy storage box; another purpose of this application is to provide an electrical device.

[0005] Technical solution: An energy storage box according to an embodiment of this application includes:

[0006] A housing having a receiving cavity and an opening communicating with the receiving cavity;

[0007] A cover plate, which is connected to the housing and covers the opening;

[0008] A pull-tab assembly, comprising a first connector and a second connector, wherein the first connector is connected to the housing, the second connector is connected to the cover plate, and the first connector and the second connector are in a limiting connection.

[0009] In some embodiments, the first connector and the second connector are limited by engagement, or, along the thickness direction of the housing, the second connector has a displacement allowance relative to the first connector.

[0010] In some embodiments, the first connector includes a protrusion and a body, the body being connected to the housing, and the protrusion protruding from the side of the body away from the housing; the second connector has a connecting hole, and the protrusion engaging with the connecting hole; or, the protrusion is embedded in the connecting hole, and along the thickness direction of the housing, the side of the protrusion away from the cover plate is spaced apart from the inner wall of the connecting hole.

[0011] In some embodiments, the cover plate includes a plate body and an edge member connected to the plate body, the plate body covering the opening, and the edge member surrounding the outer periphery of the plate body; the second connector is connected to the edge member.

[0012] In some embodiments, the second connector includes:

[0013] A mating part is located on the outside of the housing, and the mating part is limitedly connected to the first connecting member;

[0014] A bent portion is located between the edge member and the mating portion, and the bent portion is connected to both the edge member and the mating portion.

[0015] In some embodiments, the bent portion has a first hole along the length direction of the box and / or the width direction of the box, and the edge member has a second hole corresponding to the first hole;

[0016] The energy storage tank also includes:

[0017] A fastener, which passes through the first hole and the second hole to connect the bent portion and the edge member.

[0018] In some embodiments, the housing includes an outer shell and a connecting flange disposed circumferentially along the outer shell, the connecting flange being connected to the edge member and / or the plate.

[0019] In some embodiments, the edge member has at least one notch that extends to the junction of the edge member and the plate.

[0020] In some embodiments, the plate body includes a main body portion and a thinning portion connected to each other. The main body portion is connected to the box body. Along the thickness direction of the box body, the thinning portion has a maximum dimension L1, and the main body portion has a maximum dimension L2, satisfying L1 < L2.

[0021] In some embodiments, the body portion includes:

[0022] A first body and a second body are both connected to the housing. The thinning portion is located between the first body and the second body to separate the first body and the second body. The thinning portion is connected to the first body and the second body respectively.

[0023] In some embodiments, the main body and the thinned portion are an integral structure.

[0024] An electrical device comprising the energy storage box described in any one of the above-mentioned methods.

[0025] Beneficial Effects: The energy storage box of this application embodiment includes: a box body having a receiving cavity and an opening communicating with the receiving cavity; a cover plate connected to the box body and covering the opening; and a latching assembly including a first connector and a second connector, the first connector being connected to the box body and the second connector being connected to the cover plate, with the first connector and the second connector being mutually limitingly connected. After the cover plate seals the opening and is normally connected to the box body, the first connector and the second connector, which are mutually limitingly connected, further connect the cover plate to the box body, improving the firmness of the connection and preventing the cover plate from detaching from the box body and flying out in the event of an explosion inside the energy storage box, thus improving the safety of the energy storage box.

[0026] This application provides an electrical device including the energy storage box described above. The electrical device has all the technical features and beneficial effects of the energy storage box described above, which will not be elaborated further here. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 is a three-dimensional structural diagram of the energy storage box provided in an embodiment of this application;

[0029] Figure 2 is a partial enlarged view of area A in Figure 1 provided in an embodiment of this application;

[0030] Figure 3 is a cross-sectional view of the energy storage box provided in an embodiment of this application;

[0031] Figure 4 is a partial enlarged view of region B in Figure 3 provided in an embodiment of this application;

[0032] Figure 5 is a three-dimensional structural diagram of an energy storage box with a notch provided in an embodiment of this application;

[0033] Figure 6 is a three-dimensional structural diagram of a cover plate with a notch provided in an embodiment of this application;

[0034] Figure 7 is a three-dimensional structural diagram of a cover plate with a thinning portion provided in an embodiment of this application;

[0035] Figure 8 is a three-dimensional structural diagram of a cover plate with a thinning section provided in an embodiment of this application;

[0036] Figure 9 is a side sectional view of a cover plate with a thinned portion provided in an embodiment of this application;

[0037] Figure 10 is a partial enlarged view of region C in Figure 9 provided in an embodiment of this application.

[0038] Reference numerals: 10-box body; 11-receiving cavity; 12-opening; 13-outer shell; 14-connecting flange; 20-cover plate; 21-plate body; 211-main body; 2111-first main body; 2112-second main body; 212-thinning part; 22-edge piece; 221-second hole; 222-notch; 30-pull-button assembly; 31-first connector; 311-protrusion; 312-body; 32-second connector; 321-connecting hole; 322-fitting part; 323-bending part; 3231-first hole; 40-fixing piece; X-length direction; Y-width direction; Z-thickness direction. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be understood that 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 technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, and "at least one" can mean one, two, or more, unless otherwise explicitly specified.

[0041] As an introduction to the embodiments of this application, an energy storage box is introduced. Energy storage boxes are often used in scenarios involving frequent personnel movement and the potential presence of other important devices and equipment nearby, making their safety particularly important. Under extreme conditions such as thermal runaway, the rate of gas generation inside the energy storage box increases, and most of the generated gases are flammable and explosive. Excessive accumulation may lead to dangerous situations such as energy storage box explosions. Furthermore, excessive explosion pressure may cause the energy storage box cover to detach from the box and fly out, injuring nearby personnel or damaging surrounding devices and equipment, thus reducing safety.

[0042] In view of this, embodiments of this application provide an energy storage box to overcome at least one of the above-mentioned technical problems.

[0043] Referring to Figures 1, 2, and 3, in this embodiment, the energy storage box includes a box body 10, a cover plate 20, and a latch assembly 30. The box body 10 has a receiving cavity 11, the internal space of which can be used to store batteries or other energy storage devices. The box body 10 also includes an opening 12 communicating with the receiving cavity 11. This opening 12 can be used to place and remove batteries or other energy storage devices, facilitating maintenance and management of the devices within the cavity. The box body 10 is an important component of the energy storage box, its main function being to store and protect the internal structure, preventing external environmental factors from damaging or interfering with the equipment. The cover plate 20 is a component connected to the box body 10 and covers the opening 12, serving to cover and protect the receiving cavity 11. At this time, the receiving cavity between the cover plate 20 and the box body 10 is a sealed area, preventing external factors such as dust and moisture from entering the energy storage box, thereby ensuring the stability and safety of the internal structure. The cover plate 20 is generally connected to the box body 10 by bolts, screws and other structures. This structure allows the cover plate 20 to be opened or closed as needed, making it convenient for users to operate or maintain the structure stored inside the energy storage box.

[0044] The pull-tab assembly 30 includes a first connector 31 and a second connector 32. The first connector 31 is connected to the housing 10, and the second connector 32 is connected to the cover plate 20. The first connector 31 and the second connector 32 are connected in a limiting manner. One or more pull-tab assemblies 30 can be provided. The main body of the pull-tab assembly 30 can be located inside or outside the housing 10. If located inside the housing 10, at least one of the first connector 31 and the second connector 32 can be bolted to the cover plate 20 or the housing 10, with the bolt head protruding outside the energy storage box, facilitating removal of the bolt by personnel from the outside to separate the cover plate 20 or the housing 10. If the first connector 31 and the second connector 32 are located outside the housing 10, at least one of them can be configured as an elastic structural component. In this case, the first connector 31 and the second connector 32, which are originally in a limiting connection, can be separated by a certain deformation without having to disassemble one of them. Alternatively, the first connector 31 and the second connector 32 can be rigid structures. In this case, one of them needs to be completely removed from the housing 10 or the cover plate 20 so that the first connector 31 and the second connector 32 can be released from the limiting connection state, allowing the housing 10 and the cover plate 20 to separate. Even if an explosion occurs inside the energy storage box, damaging the bolts, screws, and other connecting structures between the cover plate 20 and the box body 10 (the original connecting structure between the cover plate 20 and the box body 10 can reduce the pressure of the explosion, and the gap between the cover plate 20 and the box body 10 will also release some gas and reduce the pressure), the limiting effect of the first connecting member 31 on the second connecting member 32 can prevent the cover plate 20 from detaching from the box body 10, ensuring that the two are always connected. This can prevent the cover plate 20 from detaching from the box body 10 and flying out when the explosion pressure inside the energy storage box is too high, thus preventing injury to the staff working around it and damage to other equipment in the vicinity, and improving the safety of the energy storage box during use.

[0045] Please refer to Figures 1, 2, and 3. In this embodiment, the first connector 31 and the second connector 32 are engaged and limited, or, along the thickness direction Z of the housing 10, the second connector 32 has a displacement allowance relative to the first connector 31. It is understood that the first connector 31 and the second connector 32 can be engaged, with their connection points in close contact, further connecting the housing 10 and the cover plate 20, making the housing 10 and the cover plate 20 more firmly connected. During the energy storage box explosion, the first connector 31, through the second connector 32, provides a certain constraint on the cover plate 20, preventing the cover plate 20 from flying off due to excessive explosion pressure. Because the first connector 31 and the second connector 32 are tightly engaged, they will not move relative to each other during the explosion venting process, ensuring the limiting effect.

[0046] Alternatively, when the first connecting member 31 limits the second connecting member 32, the second connecting member 32 can also have a certain displacement margin relative to the first connecting member 31 in the thickness direction Z of the housing 10. That is, when the energy storage box is venting, the cover plate 20 can drive the second connecting member 32 to move to a certain extent in the thickness direction Z until the corresponding part of the second connecting member 32 contacts the corresponding part of the first connecting member 31, and the first connecting member 31 restricts the second connecting member 32 from moving further. By setting a certain displacement margin between the two, the second connecting member 32 can play a certain buffering role, reducing the force of the second connecting member 32 on the first connecting member 31; at the same time, since a tight fit between the two is not required, the machining accuracy of the first connecting member 31 and the second connecting member 32 can be reduced, thus reducing the machining difficulty and improving the machining efficiency of the structure.

[0047] Please refer to Figures 1, 2, 3, and 4. In some embodiments, the first connector 31 includes a protrusion 311 and a body 312. The body 312 is connected to the housing 10, and the protrusion 311 protrudes from the side of the body 312 away from the housing 10. The second connector 32 has a connection hole 321. The protrusion 311 engages with the connection hole 321; or, the protrusion 311 is embedded in the connection hole 321, and along the thickness direction Z of the housing 10, the side of the protrusion 311 away from the cover plate 20 is spaced apart from the inner wall of the connection hole 321. The protrusion 311 can be a hemispherical, cuboid, or other block or baffle structure. The shape and size of the connecting hole 321 on the second connector 32 can perfectly match the shape and size of the protrusion 311 to ensure that the protrusion 311 can be fully embedded therein to form a tight connection. This prevents relative movement between the first connector 31 and the second connector 32, ensuring the effect of the first connector 31 limiting the second connector 32, and to a certain extent improving the firmness of the connection between the housing 10 and the cover plate 20. The shape and size of the connecting hole 321 on the second connector 32 do not necessarily need to perfectly match the shape and size of the protrusion 311. The size of the connecting hole 321 can be larger than the size of the protrusion 311. In the thickness direction Z of the housing 10, the side of the protrusion 311 away from the cover plate 20 is spaced apart from the inner wall of the connecting hole 321. When the energy storage box is vented, the cover plate 20 can drive the second connector 32 to move a certain distance in the thickness direction Z. Then, the protrusion 311 comes into contact with the inner wall of the connecting hole 321 and they press against each other, so that the protrusion 311 of the first connector 31 blocks the movement of the second connector 32, thereby restricting the second connector 32 from continuing to move in the thickness direction Z. This spacing arrangement can provide a certain buffering effect on the cover plate 20 and the second connector 32 when the energy storage box is vented, reducing the force exerted by the second connector 32 on the protrusion 311 of the first connector 31; at the same time, since a tight fit between the two is not required, the machining accuracy of the first connector 31 and the second connector 32 can be reduced, thus reducing the difficulty of machining and improving the machining efficiency of the structure.

[0048] Please refer to Figures 1, 3 and 4. The cover 20 includes a plate 21 and an edge member 22 surrounding and connected to the plate 21. The cover 20 is a component of the energy storage box. The cover 20 includes a plate 21 and an edge member 22 connected to the plate 21. The plate 21 covers the opening 12, and the edge member 22 is arranged around the outer periphery of the plate 21.

[0049] The plate 21 is typically a flat or slightly convex plate-like structure that covers the opening 12 and protects the receiving cavity 11. An edge member 22 is located at the edge of the plate 21, surrounding it and forming a connection area with the housing 10, ensuring a tight connection between the cover 20 and the housing 10. A second connector 32 is connected to the edge member 22, effectively connecting the second connector 32 to the cover 20. The cover 20 is further connected to the housing 10 via the edge member 22 and the interlocking first and second connectors 31 and 32, improving the robustness of the connection between the housing 10 and the cover 20. Simultaneously, since the edge member 22 is located at the edge of the plate 21, connecting the second connector 32 to it is more convenient, and it also facilitates the connection between the second connector 32 and the first connector 31, reducing the length and material usage of the second connector 32 and lowering costs.

[0050] Referring to Figures 1, 3, and 4, in some embodiments, the second connector 32 includes a mating portion 322 and a bent portion 323. The mating portion 322 is typically located on the outer side of the housing 10, and it is connected to the first connector 31 to ensure the stability of the pull-tab assembly 30. The bent portion 323 is located between the edge member 22 and the mating portion 322, and is connected to both the edge member 22 and the mating portion 322. The bent portion 323 can be an L-shaped structure or a cuboid structure. While one end of the bent portion 323 is connected to the mating portion 322, the other end is abutted against the inner surface of the edge member 22. Then, the bent portion 323 and the edge member 22 are connected by a connecting structure, thereby achieving the effect of connecting the mating portion 322 to the edge member 22 through the bent portion 323. This also achieves the connection between the second connector 32 and the cover plate 20, ensuring the firmness of the connection between the cover plate 20 and the housing 10. In summary, by connecting the bent portion 323 of the second connector 32 to the edge member 22, the second connector 32 can be installed and fixed as a whole. By connecting the mating portion 322 of the second connector 32 to the first connector 31 for limiting, the second connector 32 can limit the first connector 31.

[0051] Both the cover plate 20 and the second connector 32 can be integrally molded structures.

[0052] Referring to Figures 1, 3, and 4, in some embodiments, the bent portion 323 has a first hole 3231 along the length direction X and / or the width direction Y of the housing 10, and the edge member 22 has a second hole 221 corresponding to the first hole 3231. Since the pull-tab assembly 30 can be disposed on the outside of the energy storage box along the length direction X of the housing 10, or on the outside of the energy storage box along the width direction Y of the housing 10, or both along the length direction X and the width direction Y, the bent portion 323 on the pull-tab assembly 30 can also be disposed in this manner. When the surface where the bent portion 323 connects to the edge member 22 is perpendicular to the large surface of the cover plate 20, if the bent portion 323 and the edge member 22 are disposed along the length direction X of the housing 10, the first hole 3231 and the second hole 221 connecting the bent portion 323 and the edge member 22 are opened along the length direction X of the housing 10. If the bending portion 323 and the edge member 22 are provided along the width direction Y of the housing 10, then the first hole 3231 and the second hole 221, which facilitate the connection between the bending portion 323 and the edge member 22, are opened along the width direction Y of the housing 10. If the bending portion 323 and the edge member 22 are provided along both the length direction X and the width direction Y of the housing 10, then part of the first hole 3231 and the second hole 221 are opened along the length direction X of the housing 10, and the other part is opened along the width direction Y of the housing 10.

[0053] The energy storage box also includes a fastener 40, which has a first hole 3231 and a second hole 221 through it to connect the bent portion 323 and the edge member 22. The fastener 40 can be a bolt, screw, pin, or other suitable fastening structure. The first hole 3231 can be circular, elliptical, or other shapes, designed to accommodate the fastener 40. The shape and position of the second hole 221 match the first hole 3231 so as to mate with it, allowing the fastener 40 to pass through, thereby securely connecting the bent portion 323 and the edge member 22.

[0054] Referring to Figures 1, 3, and 4, in some embodiments, the cover 20 includes a plate 21 and an edge member 22 surrounding and connected to the plate 21. The plate 21 is the main component of the cover 20. It is generally made of a robust material such as metal or high-strength plastic and covers the top of the energy storage box to protect the internal devices or structure of the energy storage box from the influence of the external environment. The box 10 includes an outer shell 13 and a connecting flange 14 arranged circumferentially along the outer shell 13, which is connected to the edge member 22 and / or the plate 21. The outer shell 13 is the main component of the box 10, providing the overall structure of the energy storage box. The outer shell 13 is typically made of a robust and corrosion-resistant material and can cooperate with the plate 21 to protect the internal devices and structure of the energy storage box. The connecting flange 14 can be a single piece arranged circumferentially along the outer shell 13, or it can be multiple parts arranged at intervals circumferentially along the outer shell 13. The connecting flange 14 fits tightly with the edge member 22 to ensure a secure connection between the cover 20 and the box 10. The connecting flange 14 is connected to the edge member 22 and / or the plate 21. That is, the connecting flange 14 can be connected to the edge member 22, the plate 21, or both. The connecting flange 14 can be tightly connected to the edge member 22 and / or the plate 21 using fixing structures such as bolts, clamps, screws, and rivets. This connection ensures a stable connection between the cover plate 20 and the housing 10. The thickness of the connecting flange 14 along the thickness direction Z of the housing 10 can be increased as needed to better allow the side of the connecting flange 14 facing the edge member 22 to fit against the inner side of the edge member 22, and then the two are connected by a corresponding fixing structure. The contact surface between the connecting flange 14 and the edge member 22 can be perpendicular to the large surface of the plate 21, or there can be other angles between them. The tight connection between the connecting flange 14 and the edge member 22 or the plate 21 improves the stability of the connection between the housing 10 and the cover plate 20. If the connecting flange 14 is tightly connected to both the edge piece 22 and the plate 21, it can not only improve the firmness of the connection between the box 10 and the cover plate 20, but also increase the sealing between the two to prevent dust, moisture or other impurities from entering the energy storage box.

[0055] Referring to Figures 5 and 6, in some embodiments, the edge member 22 has at least one notch 222 extending to the connection between the edge member 22 and the plate 21. The notch 222 reduces the material used in the edge member 22, but also reduces its strength. In the event of an explosion inside the energy storage tank, the excessive internal pressure will cause significant compression of the cover plate 20. For the gas inside the energy storage tank to be released, it needs to pass through the connection between the plate 21 and the tank 10, and also through the connection between the edge member 22 and the tank 10. In this case, providing one or more notches 222 on the edge member 22 allows the gas to be discharged directly through the notch 222 after passing through the connection between the plate 21 and the tank 10, without the edge member 22 obstructing the gas flow. This makes it easier for the cover plate 20 to deform at the notch 222 when an explosion occurs inside the energy storage box. It also makes it easier for a gap to form between the cover plate 20 and the box body 10 at the notch 222. This allows the gas inside the energy storage box to be released through the gap after reaching a certain pressure, thereby reducing the impact force of the explosive gas on the cover plate 20 and, to some extent, preventing the cover plate 20 from detaching from the box body 10 and flying out.

[0056] Please refer to Figures 1, 3, 7, 9, and 10. In some embodiments, the plate 21 includes a main body 211 and a thinning portion 212 connected together. The main body 211 is connected to the housing 10. Along the thickness direction Z of the housing 10, the thinning portion 212 has a maximum dimension L1, and the main body 211 has a maximum dimension L2, satisfying: L1 < L2. It can be understood that along the thickness direction Z of the housing 10, the thickness of the thinning portion 212 is less than the thickness of the main body 211. The thinning portion 212 can reduce the material used in the plate 21, while also reducing the strength of the plate 21 at the thinning portion 212. When an explosion occurs inside the energy storage box, the internal gas will exert significant pressure on the cover plate 20. The maximum dimension L1 of the thinned portion 212 in the thickness direction Z is smaller than the maximum dimension L2 of the main body portion 211 in the thickness direction Z, making the strength of the thinned portion 212 less than that of the main body portion 211. When both are subjected to continuous pressure from the gas inside the energy storage box, the thinned portion 212 will break first, and the gas inside the energy storage box can be released from the point of failure of the thinned portion 212, thereby reducing the gas pressure inside the energy storage box and preventing the cover plate 20 from detaching from the box body 10 and flying out, thus improving the safety of the energy storage box during use.

[0057] Please refer to Figures 1, 8, and 9. In some embodiments, the main body 211 includes a first main body 2111 and a second main body 2112. Both the first main body 2111 and the second main body 2112 are connected to the housing 10. A thinning portion 212 is located between the first main body 2111 and the second main body 2112, separating them. The thinning portion 212 is connected to both the first main body 2111 and the second main body 2112. Positioning the thinning portion 212 between the first main body 2111 and the second main body 2112 allows it to be positioned along the thickness direction Z of the housing 10, facing the battery inside the housing 10. In the event of a battery explosion, the explosive gas can act on the thinning portion 212 as early as possible, causing it to deform. This creates a gap as early as possible at the connection between the cover plate 20 and the housing 10 in the direction of the thinning portion 212's extension, releasing the explosive gas inside the energy storage tank as soon as possible.

[0058] Referring to Figures 7, 8, and 9, in some embodiments, the main body 211 and the thinned portion 212 are an integral structure. They are connected together to form a single, interconnected unit, and both are made of the same material. There are no gaps at the connection between the main body 211 and the thinned portion 212, ensuring the sealing performance of the cover plate 20 even if the thinned portion 212 undergoes some deformation. Simultaneously, the integral structure also guarantees the required strength of the cover plate 20 to a certain extent.

[0059] An electrical device includes an energy storage box as described above. This electrical device possesses all the technical features and beneficial effects of the aforementioned energy storage boxes, which will not be elaborated further here.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0061] The energy storage box and electrical equipment provided in the embodiments of this application have been described in detail above, and specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An energy storage box, characterized in that, include: The housing (10) has a receiving cavity (11) and an opening (12) communicating with the receiving cavity (11); A cover plate (20) is connected to the housing (10) and covers the opening (12); The pull-button assembly (30) includes a first connector (31) and a second connector (32). The first connector (31) is connected to the housing (10), and the second connector (32) is connected to the cover plate (20). The first connector (31) and the second connector (32) are connected in a limiting connection.

2. The energy storage box according to claim 1, characterized in that, The first connector (31) and the second connector (32) are locked in place by engaging; or, along the thickness direction (Z) of the housing (10), the second connector (32) has a displacement allowance relative to the first connector (31).

3. The energy storage box according to claim 2, characterized in that, The first connector (31) includes a protrusion (311) and a body (312). The body (312) is connected to the housing (10). The protrusion (311) protrudes from the side of the body (312) away from the housing (10). The second connector (32) has a connection hole (321). The protrusion (311) engages with the connection hole (321). Alternatively, the protrusion (311) is embedded in the connection hole (321) and, along the thickness direction (Z) of the housing (10), the side of the protrusion (311) away from the cover plate (20) is spaced apart from the inner wall of the connection hole (321).

4. The energy storage box according to claim 1, characterized in that, The cover plate (20) includes a plate body (21) and an edge member (22) connected to the plate body (21). The plate body (21) covers the opening (12), and the edge member (22) is arranged around the outer periphery of the plate body (21). The second connecting member (32) is connected to the edge member (22).

5. The energy storage box according to claim 4, characterized in that, The second connector (32) includes: The mating part (322) is located on the outside of the housing (10), and the mating part (322) is limitedly connected to the first connector (31); A bent portion (323) is located between the edge member (22) and the mating portion (322), and the bent portion (323) is connected to the edge member (22) and the mating portion (322) respectively.

6. The energy storage box according to claim 5, characterized in that, Along the length direction (X) and / or the width direction (Y) of the box body (10), the bent portion (323) has a first hole (3231), and the edge member (22) has a second hole (221) corresponding to the first hole (3231); The energy storage tank also includes: A fastener (40) passes through the first hole (3231) and the second hole (221) to connect the bent portion (323) and the edge member (22).

7. The energy storage box according to claim 4, characterized in that, The housing (10) includes an outer shell (13) and a connecting flange (14) arranged circumferentially along the outer shell (13), the connecting flange (14) being connected to the edge member (22) and / or the plate (21).

8. The energy storage box according to claim 4, characterized in that, The edge member (22) has at least one notch (222) that extends to the connection between the edge member (22) and the plate (21).

9. The energy storage box according to claim 4, characterized in that, The plate (21) includes a main body (211) and a thinning part (212) connected to each other. The main body (211) is connected to the box (10). Along the thickness direction (Z) of the box (10), the thinning part (212) has a maximum size L1, and the main body (211) has a maximum size L2, satisfying: L1 < L2.

10. The energy storage box according to claim 9, characterized in that, The main body (211) includes: A first body (2111) and a second body (2112) are connected to the housing (10). The thinning portion (212) is located between the first body (2111) and the second body (2112) to separate the first body (2111) and the second body (2112). The thinning portion (212) is connected to the first body (2111) and the second body (2112) respectively.

11. The energy storage box according to claim 9, characterized in that, The main body (211) and the thinning part (212) are an integral structure.

12. An electrical appliance, characterized in that, Includes the energy storage box as described in any one of claims 1 to 11.

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