Energy storage box and energy storage system

Abstract

The embodiment of the utility model provides an energy storage box and an energy storage system, and relates to the technical field of energy storage. Wherein the energy storage box comprises a box body, a door plate, a first connecting rod and a plurality of lock tongues, the door plate is rotationally connected to the box body, the lock tongues are located on the same side in the thickness direction of the door plate and rotationally connected with the door plate, and the lock tongues are rotationally connected with the first connecting rod; one of the multiple lock tongues is used for driving the rest of the multiple lock tongues to rotate through the first connecting rod, a door column is arranged on the box body, a containing cavity is formed in the door column, multiple lock openings distributed at intervals in the length direction of the door column are formed in the side, facing the multiple lock tongues, of the door column, and the containing cavity communicates with the multiple lock openings. The multiple lock tongues are located outside the door post, and in the locking state, each lock tongue penetrates through one lock opening and extends into the containing cavity. A plurality of locking points are arranged between the door plate and the box body of the energy storage box and can be linked, so that the door plate and the box body are stably connected, and the opening and closing operation of the door plate is more convenient.

Description

Technical Field

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

[0002] With the large-scale development of new energy, the requirements for grid-connected stability are constantly increasing, and energy storage boxes are being used more and more widely. At present, the mainstream energy storage technology is electrochemical energy storage. Energy storage safety is self-evident. In order to ensure the safety of personnel and property, the explosion-proof capability of energy storage boxes is becoming more and more important. Among them, the door panel of the energy storage box is an important explosion-proof structure. When the energy storage box explodes, the door panel can prevent foreign objects from flying out, ensuring the safety of personnel and property.

[0003] In the related art, after the door panel of the energy storage box is closed, it will be fixed to the box body of the energy storage box by a chain. After the explosion occurs, the chain will limit the opening angle of the door panel. However, when multiple chains are required to lock different positions of the door panel, the multiple chains cannot be linked. When opening or closing the door panel, multiple chains need to be operated one by one, which is cumbersome and complicated. Utility Model Content

[0004] The present application provides an energy storage box and an energy storage system, wherein a plurality of locking points are arranged between a door panel and a box body of the energy storage box, and the plurality of locking points can be linked to each other, so that the door panel and the box body are stably connected and the opening and closing operation of the door panel can be made more convenient.

[0005] In order to achieve the above purpose, this application adopts the following technical solutions:

[0006] In a first aspect of the present application, an energy storage box is provided, which includes a box body, a door panel, a first connecting rod and a plurality of lock tongues. The door panel is rotatably connected to the box body, the plurality of lock tongues are located on the same side in the thickness direction of the door panel and are rotatably connected to the door panel, the plurality of lock tongues are rotatably connected to the first connecting rod, the rotation axis of each lock tongue relative to the door panel and the rotation axis of each lock tongue relative to the first connecting rod extend along the thickness direction of the door panel, one of the plurality of lock tongues is used to drive the remaining lock tongues of the plurality of lock tongues to rotate through the first connecting rod, a door post is provided on the box body, the length direction of the door post is the same as the distribution direction of the plurality of lock tongues, an accommodating cavity is provided in the door post, a plurality of lock openings spaced apart along the length direction of the door post are provided on one side of the door post facing the plurality of lock tongues, the accommodating cavity is communicated with the plurality of lock openings, the energy storage box has an open state and a locked state, in the open state, the plurality of lock tongues are located outside the door post, in the locked state, one end of each lock tongue passes through a lock opening and extends into the accommodating cavity.

[0007] When the door panel needs to be closed to seal the box, one of the lock tongues is rotated toward the door post. This lock tongue can be understood as an active lock tongue. The rotated lock tongue drives other lock tongues to rotate through the first connecting rod. The other driven lock tongues can be understood as driven lock tongues. Driven by the active lock tongue, all lock tongues rotate toward the lock port. Each lock tongue passes through a corresponding lock port and extends into the accommodating cavity of the door post. The contact between multiple lock tongues and the door post restricts the door panel from opening, so that the energy storage box is in a locked state. In this state, the door panel of the energy storage box is closed to protect the structure inside the box. When the door panel needs to be opened, one of the lock tongues is rotated in the opposite direction. Driven by this lock tongue, all lock tongues rotate to the outside of the lock port. At this time, the energy storage box is in an open state. In this state, the door panel can be rotated outward to open at any time. Through the solution of the present application, the door panel and the box body are fixed through multiple locking points (multiple lock tongues and lock ports), the door panel and the box body can be stably connected, and when the energy storage box explodes, the contact between multiple lock tongues and door posts restricts the door panel from opening, reducing the scope of damage caused by the explosion. In addition, multiple lock tongues are linked, and rotating one lock tongue can drive multiple lock tongues to rotate synchronously, making the opening and closing operation of the door panel more convenient.

[0008] In an optional embodiment, the multiple lock tongues include a first lock tongue, and the end of the first lock tongue for extending into the accommodating cavity is provided with a protruding structure, the protruding structure protrudes toward the outer periphery of the end of the first lock tongue, and in a locked state, the protruding structure is located in the accommodating cavity, and at least a portion of the protruding structure faces the door post and is provided with a side wall of multiple lock openings.

[0009] When the lock tongue is rotated to a locked state, the protruding structure is located in the accommodating cavity, and a portion of the protruding structure (e.g., an edge portion) faces the side wall of the door post where the lock is set. It can be understood that the side wall is the side wall of the door post close to the lock tongue, and the portion of the protruding structure faces the wall of the side facing the accommodating cavity, that is, the wall of the side wall facing the protruding structure can limit the outward movement of the protruding structure. When the energy storage box explodes inside, the door panel bulges outward, and the abutment between the protruding structure and the door post can limit the lock tongue from being completely pulled out of the door post, so that the door panel will not be opened under impact, thereby enhancing the firmness of the connection between the door panel and the door post. The present application uses a structure that is as simple as possible to keep the energy storage box in a locked state during the explosion, thereby reducing the range of damage caused by the explosion of the energy storage box.

[0010] In an optional embodiment, the lock opening for the protruding structure to pass through includes a connected through opening and a limiting opening, the through opening and the limiting opening are distributed along the length direction of the door column, and in a direction parallel to the rotation axis of the first lock tongue relative to the door panel, the size of the through opening is larger than the size of the limiting opening, and the through opening is used for allowing the protruding structure to extend into the accommodating cavity. In an open state, the protruding structure is located outside the door column and facing the through opening, and in a locked state, the protruding structure is located on the side of the limiting opening away from the first connecting rod, and the part of the side wall around the limiting opening faces the protruding structure.

[0011] The limiting opening is similar to a shrinking structure. When the lock tongue extends into the accommodating cavity, it will first pass through the through opening. As the lock tongue rotates, it will gradually rotate to the side of the limiting opening away from the first connecting rod. At this time, the protruding structure is directly opposite to the side wall around the limiting opening. The side wall around the limiting opening has a limiting effect on the protruding structure, reducing the possibility of the protruding structure being pulled out of the accommodating cavity. In the present application, the lock tongue is set to a structure including the through opening and the limiting opening, which does not affect the extension of the protruding structure and can also achieve the limitation of the protruding structure.

[0012] In an optional embodiment, a transition surface is connected between the wall surface of the door post forming a through opening and the wall surface of the door post forming a limit opening. The transition surface is located on the side of the limit opening close to the door panel, and the transition surface is inclined toward the side away from the door panel in the direction from the through opening to the limit opening.

[0013] When a person locks the door, the door body actually tends to open outwards, so when the lock tongue rotates, it will often abut against the wall of the lock opening close to the door panel. Especially for a smaller limit opening, when the lock tongue rotates into the limit opening, it will collide with the corner where the limit opening and the through opening are connected, so a transition surface is provided. The transition surface can be similar to a chamfered surface, which plays a role in guiding the lock tongue to smoothly transition from the through opening to the limit opening, reducing the possibility of stagnation during the rotation of the lock tongue.

[0014] In an optional embodiment, the protruding structure is rotationally connected to the first lock tongue, the rotation axis of the protruding structure relative to the first lock tongue is perpendicular to the rotation axis of the first lock tongue relative to the door panel, and the outer peripheral wall of the protruding structure forms an annular surface, which surrounds the rotation axis of the protruding structure relative to the first lock tongue.

[0015] When the lock tongue rotates into the accommodating cavity, the protruding structure is likely to contact the edge of the lock mouth and the inner wall of the accommodating cavity. The rolling protruding structure can convert sliding friction into rolling friction, reducing the friction force of the protruding structure rotating in the lock mouth and the accommodating space, which is more conducive to the rotation of the lock tongue and makes the operator's operation of opening or closing the door panel more labor-saving.

[0016] In an optional embodiment, a clamping surface and a first inclined surface are provided in the accommodating cavity, and multiple locks include a first lock, the clamping surface is located on a side of the first lock close to the accommodating cavity, a portion of the wall surface of the door column that forms the first lock is located on a side of the clamping surface close to the door panel, the first inclined surface is provided between the portion of the wall surface and the clamping surface, and the first inclined surface is inclined from the portion of the wall surface toward the clamping surface, a sealing strip is provided on the door panel or the door column, and in a locked state, the lock tongue passing through the first lock abuts against the clamping surface, and at least a portion of the sealing strip is clamped between the door panel and the door column.

[0017] The sealing strip seals the door panel and the box body to prevent leakage of substances or gases inside the box body, and also reduces the possibility of external influence on the inside of the box body. When the door panel is closed, the lock tongue is rotated into the accommodating cavity. During the rotation of the lock tongue, it will slide along the first inclined surface. Since the first inclined surface is inclined in the direction away from the door panel, the lock tongue will gradually press the door panel against the door post during the process of abutting the first inclined surface. During the process of pressing the door panel, the sealing strip will be clamped between the door panel and the door post until the lock tongue rotates to the pressing surface and stops rotating. The door panel stays in the state of clamping the sealing strip together with the door post, so that the sealing strip can better play a sealing role.

[0018] In an optional embodiment, a second inclined surface is provided in the accommodating cavity, the second inclined surface and the pressing surface are distributed along the length direction of the door column, the second inclined surface is inclined from the pressing surface toward the door panel, the first inclined surface is located on the side of the second inclined surface close to the first connecting rod, and the first inclined surface is inclined from a partial wall surface toward the second inclined surface.

[0019] The first inclined surface is located at the lock opening, and the second inclined surface is located on the inner side of the first inclined surface. When the lock tongue rotates toward the accommodating cavity, since the end of the first inclined surface close to the lock opening is closer to the door panel, it is easy for the lock tongue to extend into the cavity. After the lock tongue presses against the first inclined surface, it will move toward the second inclined surface, and the door panel will be gradually pressed against the door post during the movement. Then the lock tongue rotates from the second inclined surface to the pressing surface. According to the rotation trajectory of the lock tongue, the second inclined surface and the pressing surface are distributed along the extension direction of the door post, which is more conducive to the rotation of the lock tongue to the pressing surface. In addition, the second inclined surface is inclined toward the side away from the door panel. When the lock tongue moves toward the pressing surface on the second inclined surface, the door panel will also be gradually pressed against the door post, achieving a close contact between the door panel and the door post. By setting the first inclined surface and the second inclined surface, the present application allows the door panel and the door post to gradually clamp the sealing strip, which is beneficial to the sealing of the energy storage box and also convenient for the rotation of the lock tongue.

[0020] In an optional embodiment, the door column includes a hollow column and multiple lock shells, the extension direction of the hollow column is the same as the distribution direction of the multiple lock tongues, a plurality of installation openings are provided on the side of the hollow column facing the multiple lock tongues, the multiple installation openings are spaced apart along the length direction of the hollow column, a lock shell is provided at each installation opening, each lock shell extends into the hollow column, a lock opening is provided on the side of each lock shell facing the multiple lock tongues, a chamber connected to the corresponding lock opening is provided in each lock shell, and the accommodating chamber includes the chamber of each lock shell.

[0021] The chambers in the multiple lock shells together form a receiving chamber in the door column, and the receiving chamber is at least partially located in the hollow column. In the locked state, each lock tongue rotates into the corresponding lock shell. The combination of the lock shell and the hollow column makes the door column more beautiful, and is also conducive to the independent setting and design of each lock shell. In addition, when one or some lock shells are damaged, a single lock shell can be replaced in a targeted manner, which is convenient for the maintenance of the door column.

[0022] In an optional embodiment, in the open state, the inclination directions of the multiple lock tongues are the same, and the first connecting rod is arranged on the same side of the rotational connection positions of the multiple lock tongues and the door panel.

[0023] Through the above design, the first connecting rod and multiple lock tongues form a structure similar to a parallelogram connecting rod group. The rotation of any lock tongue can drive the rotation of the other lock tongues through the first connecting rod, thereby realizing the linkage between the multiple lock tongues.

[0024] In an optional embodiment, in the open state, the two lock tongues at both ends of the first connecting rod are tilted away from each other or tilted towards each other in the direction from the door post to the first connecting rod, one end of the first connecting rod is rotatably connected to a side where a rotational connection position of one of the two lock tongues with the door panel is away from the door post, and the other end of the first connecting rod is rotatably connected to a side where a rotational connection position of the other of the two lock tongues with the door panel is close to the door post.

[0025] Since the first connecting rod is connected to different sides of the two lock tongues, the two lock tongues are distributed in an "eight" shape when in the open state. Under this connecting rod mechanism, multiple lock tongues can rotate synchronously to achieve linkage between the lock tongues, which is convenient for opening and closing of the door panel.

[0026] In an optional embodiment, an edge portion on one side of the door panel is rotatably connected to the box body, and a plurality of locking tongues are provided on the edge portion on the other side, and the plurality of locking tongues are distributed along the vertical direction.

[0027] Multiple lock tongues are arranged in the vertical direction and located on one side of the door panel, so that the distribution direction and position setting of the multiple lock tongues are more reasonable. In the locked state, the movable edge of the door panel is connected to the door post through multiple lock tongues, which improves the stability of the connection between the door panel and the door post, reduces the possibility of the door panel opening, and improves the explosion-proof capability of the energy storage box.

[0028] In an optional embodiment, the energy storage box also includes a second connecting rod and a locking pin, a locking block is arranged on the top or bottom of the box body, the locking tongue closest to the locking block is rotatably connected to the second connecting rod, the second connecting rod is rotatably connected to the locking pin, a fixed block with a through hole is arranged on the door panel, the through hole passes through the fixed block in a vertical direction, the locking pin slides in the through hole, the rotation axis of the second connecting rod relative to the connected locking tongue, and the rotation axis of the second connecting rod relative to the locking pin, both extend along the thickness direction of the door panel, in the open state, the locking pin is located on the side of the locking block close to the second connecting rod, and in the locked state, the end of the locking pin away from the second connecting rod faces the locking block, and the locking block restricts the locking pin from moving toward the side away from the internal space of the box body.

[0029] When one of the lock tongues drives the first connecting rod to move, the first connecting rod drives the other lock tongues to rotate, and also drives the second connecting rod to move, and the second connecting rod drives the lock pin to move, and the fixed block limits the sliding of the lock pin, so that the lock pin can only slide along the axial direction of the through hole. That is, when one of the lock tongues rotates, the lock pin will also move up and down. Among them, when in the open state, the lock pin is not facing the lock block, and the lock pin will not limit the rotation of the door panel. When the energy storage box is in a locked state, the lock pin faces the lock block, and the lock block is used to abut the lock pin to limit the movement of the lock pin, which also limits the movement of the door panel. The present application limits the rotation of the panel surface by the lock pin and the lock tongue at the same time, so that the connection between the door panel and the box body is more stable. In addition, the lock pin and the lock tongue move synchronously, making the opening and closing operation of the door panel more convenient, and using a simple structure to keep the door panel closed during an explosion, thereby improving the explosion-proof capability of the energy storage box.

[0030] In an optional embodiment, the energy storage box also includes a crank handle, which is arranged on the side of the door panel facing away from the internal space of the box body, and multiple lock tongues are arranged on the side of the door panel facing the internal space of the box body. The crank handle is fixedly connected to one of the lock tongues through a rotating shaft, and the rotating shaft passes through the door panel.

[0031] Multiple lock tongues are arranged on the inner side of the door panel, so that the multiple lock tongues do not occupy the outer space of the door panel, which is beneficial to prolonging the life of the lock tongue and making the energy storage box more beautiful. In addition, the crank for controlling the lock tongue is arranged on the outer side of the door panel, and the crank drives the lock tongue to rotate through the rotating shaft passing through the door panel, so that the operator can control the lock tongue inside the box outside the box, which is beneficial to rotating the lock tongue.

[0032] In a second aspect of the present application, an energy storage system is provided, which includes a power converter and the above-mentioned energy storage box, the energy storage box and the power converter are electrically connected, and the power converter is used to perform power conversion on the voltage output by the energy storage box.

[0033] The door panel of the energy storage box is fixed to the box body by multiple locking points. When the energy storage box explodes, the contact between multiple lock tongues and door posts restricts the door panel from opening, reducing the scope of damage caused by the explosion, reducing the possibility of damage to surrounding equipment by the energy storage box, and thus reducing the damage to the energy storage system caused by the explosion. In addition, the energy storage system provided by the present application includes the above-mentioned energy storage box, so the energy storage system provided by the present application and the energy storage box of the above-mentioned technical solution can solve the same technical problems and have the same technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of a partial structure of an energy storage system provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of the overall structure of an energy storage box provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of the structure of a door panel provided in an embodiment of the present application, which is intended to show the states of multiple lock tongues in an open state;

[0037] Figure 4 A schematic diagram of the structure of a door post provided in an embodiment of the present application;

[0038] Figure 5 An exploded view of a local structure of a door post provided in an embodiment of the present application;

[0039] Figure 6 A diagram showing the position of the lock tongue in the open state provided by an embodiment of the present application;

[0040] Figure 7 A schematic diagram of the structure of a door panel provided in an embodiment of the present application is intended to illustrate the states of multiple lock tongues in a locked state;

[0041] Figure 8 A diagram showing the position of the lock tongue in a locked state provided in an embodiment of the present application;

[0042] Fig. 9 A schematic diagram of the structure of a first connecting rod and a plurality of locking tongues provided in an embodiment of the present application is intended to show the comparison between an open state and a locked state;

[0043] Fig.10 Another structural schematic diagram of a first connecting rod and a plurality of locking tongues provided in an embodiment of the present application is intended to show the comparison between an open state and a locked state;

[0044] Fig.11 A schematic diagram of the structure of a lock pin provided in an embodiment of the present application;

[0045] Fig.12 A schematic diagram of the structure of a crank provided in an embodiment of the present application;

[0046] Fig.13 A schematic diagram of the structure of a sealing strip provided in an embodiment of the present application;

[0047] Fig.14 A schematic diagram of the structure of a lock case provided in an embodiment of the present application;

[0048] Fig.15 A schematic diagram of the position relationship between a lock tongue and a lock housing in an open state provided by an embodiment of the present application;

[0049] Fig.16 A schematic diagram of the positional relationship between a lock tongue and a lock housing in a locked state provided by an embodiment of the present application;

[0050] Fig.17 A schematic diagram of the structure of another door post provided in an embodiment of the present application;

[0051] Fig.18 A schematic diagram of the structure of multiple door posts provided in an embodiment of the present application.

[0052] Reference numerals:

[0053] 10-Energy storage system;

[0054] 100-Energy storage box;

[0055] 1-box; 11-doorpost; 111-locking port; 1111-passing port; 1112-limiting port; 1113-transition surface; 1114-entrance surface; 1115-first locking port; 112-pressing surface; 113-first inclined surface; 114-second inclined surface; 115-hollow column; 1151-installation port; 116-lock housing; 1161-chamber; 117-installation plate; 12-locking block;

[0056] 2-door panel; 21-sealing strip; 22-storage slot; 23-fixing block; 231-through hole;

[0057] 3-locking tongue; 31-first locking tongue; 32-protruding structure; 321-annular surface;

[0058] 4-first connecting rod; 5-second connecting rod; 6-third connecting rod; 7-fourth connecting rod; 8-locking pin; 9-crank handle;

[0059] 200-Power converter. DETAILED DESCRIPTION

[0060] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0061] In the present application, unless otherwise clearly specified and limited, the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. may be defined including but not limited to the directions relative to the schematic placement of the components in the drawings, wherein these directional terms may be relative concepts, which are used for relative description and clarification, and may change accordingly according to the changes in the placement of the components in the drawings, and shall not be understood as limitations on the present application.

[0062] In this application, the terms "first", "second", etc. are used only for descriptive purposes to distinguish one element from another element, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0063] In the present application, unless otherwise clearly specified or limited, "plurality" means two or more.

[0064] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, when describing pipelines or channels, the "connected" and "connected" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0065] In addition, in this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0066] In the drawings of the embodiments of the present application, solid structures such as components and assemblies are represented by guide lines; hollow structures such as openings, holes, spaces, and cavities are represented by guide lines with arrows.

[0067] The present application embodiment provides an energy storage system 10, Figure 1 The partial structure of the energy storage system 10 is shown as an example, and the energy storage system 10 includes an energy storage box 100 and a power converter 200. The energy storage box 100 and the power converter 200 are electrically connected, for example, the two are electrically connected through a power line, and the power converter 200 is used to perform power conversion on the voltage output by the energy storage box 100.

[0068] In some examples, the power converter 200 may include a power conversion system (PCS), which may be composed of a DC / AC bidirectional converter, a control unit, etc., and may control the charging and discharging of the energy storage box 100, perform conversion between AC and DC, etc. The energy storage box 100 may be connected to the energy storage converter via a power line (one or more). In some other examples, the power converter 200 may also be a transformer for stepping up or down.

[0069] exist Figure 1In the example shown, the power converter 200 is disposed outside the energy storage box 100. In some other examples, the power converter 200 may also be disposed inside the energy storage box 100, or the power converter 200 may be at least partially disposed inside the energy storage box 100. The present application does not specifically limit the positions of the energy storage box 100 and the power converter 200. An energy storage box 100 provided in an embodiment of the present application, Figure 2 The overall structure of the energy storage box 100 is shown as an example. Figure 2 The energy storage box 100 includes a box body 1 and a door panel 2, wherein the door panel 2 is rotatably connected (eg, hinged) to the box body 1. Figure 2 The door panel 2 is shown in a "left-right rotation" form, for example, the door panel 2 is rotated to the right (right side in the figure) to open the door panel 2, and the opened door panel 2 is rotated to the left (left side in the figure) to close the door panel 2. In other examples, the door panel 2 can also be in a "upward and downward rotation" form, for example, the door panel 2 is rotated upward (upper side in the figure) to open the door panel 2, and the opened door panel 2 is rotated downward (lower side in the figure) to close the door panel 2.

[0070] Figure 3 The other structures on the door panel 2 are shown as examples. Figure 3 In the following multiple figures, most of the structure of the box body 1 is omitted, and only a small part related to the described structure is retained. Figure 3 The energy storage box 100 further includes a first connecting rod 4 and a plurality of locking tongues 3, wherein the plurality of locking tongues 3 are located on the same side of the door panel 2 in the thickness direction, for example, Figure 3 In the example shown, the plurality of lock tongues 3 are located on the side of the door panel 2 facing the interior space of the box body 1, that is, the plurality of lock tongues 3 are located inside the box body 1. In other examples, the plurality of lock tongues 3 may be located outside the box body 1, that is, the plurality of lock tongues 3 are located on the side of the door panel 2 facing away from the interior space of the box body 1.

[0071] Multiple lock tongues 3 are rotationally connected to the door panel 2, and multiple lock tongues 3 are also rotationally connected to the first connecting rod 4, and the rotational connection position of each lock tongue 3 and the door panel 2 is different from the rotational connection position of the lock tongue 3 and the first connecting rod 4, or in other words, two different positions on each lock tongue 3 are rotationally connected to the door panel 2 and the first connecting rod 4, wherein the first connecting rod 4 can be located on the same side of the door panel 2 as the multiple lock tongues 3.

[0072] The rotation axis of each lock tongue 3 relative to the door panel 2 is parallel to the rotation axis of each lock tongue 3 relative to the first connecting rod 4, and the rotation axis of each lock tongue 3 relative to the door panel 2 and the rotation axis of each lock tongue 3 relative to the first connecting rod 4 both extend along the thickness direction of the door panel 2, or in other words, are perpendicular to any plate surface in the thickness direction of the door panel 2.

[0073] The box body 1 is provided with a door post 11. Figure 4 The structure of a door post 11 is shown as an example. Figure 3 and Figure 4 The length direction of the door column 11 is the same as the distribution direction of the multiple lock tongues 3. A plurality of lock openings 111 are arranged on one side of the door column 11 facing the multiple lock tongues 3. The multiple lock openings 111 are distributed at intervals along the length direction of the door column 11. A accommodating cavity (not marked in the drawings) is arranged in the door column 11, and the accommodating cavity is communicated with the multiple lock openings 111.

[0074] In one example, referring to Figure 3 and Figure 4 , the doorpost 11 extends in the vertical direction, that is, the doorpost 11 is a vertical column, and the multiple lock tongues 3 are distributed in the vertical direction. The edge of one side of the door panel 2 in the horizontal direction is rotatably connected to the box body 1, and the edge of the other side is provided with multiple lock tongues 3, so that the distribution direction and position design of the multiple lock tongues 3 can be more reasonable. In other examples, the doorpost 11 can be distributed in the horizontal direction, for example, the doorpost 11 is located at the top or bottom of the door panel 2, and the multiple lock tongues 3 are also distributed in the top or bottom of the door panel 2 in the horizontal direction.

[0075] Reference Figure 5 , Figure 5 for Figure 4 A section of the middle door column 11 (partial explosion) is shown, and a structure of the door column 11 is exemplarily shown. In this example, the door column 11 includes a hollow column 115 and a plurality of lock shells 116. The extension direction of the hollow column 115 is the same as the distribution direction of the plurality of lock tongues 3 (the door column 11 in the example in the figure extends in the vertical direction). A plurality of mounting openings 1151 are provided on one side of the hollow column 115 facing the plurality of lock tongues 3. The plurality of mounting openings 1151 are spaced apart along the length direction of the hollow column 115. Distribution, a lock shell 116 is provided at each installation port 1151, each lock shell 116 passes through the corresponding installation port 1151 and extends into the hollow column 115, each lock shell 116 is provided with a lock port 111 on the side facing the multiple lock tongues 3, and each lock shell 116 is provided with a chamber 1161 connected to the corresponding lock port 111, and the accommodating chamber includes the chamber 1161 of each lock shell 116, or in other words, the chambers 1161 of all the lock shells 116 on the door column 11 constitute the accommodating chamber.

[0076] exist Figure 5 In the example shown, the accommodating cavity includes a plurality of chambers 1161 spaced apart along the length direction of the door column 11. Since each lock port 111 is connected to the corresponding chamber 1161, it can be said that the accommodating cavity is connected to the plurality of lock ports 111. By designing the door column 11 as a combination of a lock shell 116 and a hollow column 115, the door column 11 is more beautiful, and is also conducive to the independent setting and design of each lock shell 116. In addition, when one or some lock shells 116 are damaged, a single lock shell 116 can be replaced in a targeted manner, which is convenient for the maintenance of the door column 11.

[0077] In other examples, the door post 11 is a hollow columnar structure, that is, there is a connected space inside the door post 11, which is a accommodating cavity. A plurality of lock openings 111 are arranged on the side wall of the door post 11 facing the plurality of lock tongues 3, and the plurality of lock openings 111 are all connected to the space (accommodating cavity) inside the door post 11.

[0078] Through the connecting rod structure of the present application, one of the locking tongues 3 can drive the other locking tongues 3 to rotate through the first connecting rod 4, so that the energy storage box 100 has an open state and a locked state.

[0079] In the open state, the plurality of locking tongues 3 are located outside the doorpost 11. Figure 6 The position of the lock tongue 3 in the open state is exemplarily shown. In the example where the door column 11 includes a hollow column 115 and a plurality of lock shells 116, each lock tongue 3 corresponds to a lock shell 116, and the lock tongue 3 in the open state is located as a whole on the side of the corresponding lock port 111 close to the first connecting rod 4, and will not affect the rotation of the door panel 2.

[0080] In the locked state, one end of each locking tongue 3 passes through a locking opening 111 and extends into the accommodating cavity. Figure 7 The state of the plurality of locking tongues 3 and the first connecting rod 4 in the locked state is shown as an example. Figure 8 The example shows the situation that the lock tongue 3 extends into the accommodating cavity in the locked state. In the example where the door column 11 includes a hollow column 115 and a plurality of lock shells 116, a plurality of lock tongues 3 extend into the accommodating cavity, that is, a plurality of lock tongues 3 extend into the corresponding chambers 1161 of the lock shells 116, respectively.

[0081] There are many ways to connect the first connecting rod 4 and the multiple locking tongues 3, and this application cites two different connection methods.

[0082] Fig. 9 An exemplary connection method of the first connecting rod 4 and the plurality of locking tongues 3 is shown. Figure 3 and Figure 7 The connection method in Fig. 9 The left side of the figure shows the positions of the multiple locking tongues 3 and the first connecting rod 4 when the energy storage box 100 is in a locked state. Fig. 9 The figure on the right side of the middle shows the positions of the multiple locking tongues 3 and the first connecting rod 4 when the energy storage box 100 is in the open state. Among them, the first connecting rod 4 can be a long straight rod, and the multiple locking tongues 3 in the figure are all rotatably connected to the first connecting rod 4.

[0083] Fig. 9In the example shown, in the open state, the inclination direction of the multiple lock tongues 3 is the same, and the dotted line L1 indicates the inclination direction of the corresponding lock tongue 3, which can also be the length direction of the lock tongue 3, or the direction from one end of the lock tongue 3 that is used to extend into the accommodating cavity to the other opposite end. In addition, in the open state, the first connecting rod 4 is arranged on the same side of the rotational connection position of the multiple lock tongues 3 and the door panel 2, or in other words, the first connecting rod 4 is arranged on the side of each rotational connection position of the lock tongue 3 and the door panel 2 away from the door column 11 (the relative position relationship between the door column 11 and the lock tongue 3 can be referred to Figure 7 In other examples of this connection mode, the first connecting rod 4 can also be arranged on a side of the door column 11 where each locking tongue 3 is rotatably connected to the door panel 2 .

[0084] Among them, the rotation connection position between the lock tongue 3 and the door panel 2 is Figure 6 or Figure 8 The position indicated by the middle arrow S1 is the rotation connection position of the lock tongue 3 and the first connecting rod 4. Figure 6 or Figure 8 The position indicated by arrow S2.

[0085] Through the above design, the first connecting rod 4 and the multiple locking tongues 3 form a structure similar to a superimposed parallelogram connecting rod. The rotation of any one locking tongue 3 can drive the other locking tongues 3 to rotate through the first connecting rod 4, thus realizing the linkage between the multiple locking tongues 3. Fig. 9 In the example shown, four locking tongues 3 are rotatably connected to the first connecting rod 4. In other examples, the number of locking tongues 3 rotatably connected to the first connecting rod 4 may be one, two, three, five, etc., and the present application does not impose any specific limitation on this.

[0086] Fig.10 Another connection method of the first connecting rod 4 and the plurality of locking tongues 3 is shown as an example, wherein: Fig.10 The left side of the figure shows the positions of the multiple locking tongues 3 and the first connecting rod 4 when the energy storage box 100 is in the locked state. Fig.10 The figure on the right side shows the positions of multiple locking tongues 3 and the first connecting rod 4 when the energy storage box 100 is in the open state. Among them, the first connecting rod 4 is a straight rod, and the two ends of the first connecting rod 4 are respectively connected to a locking tongue 3 for rotation.

[0087] Fig.10In the example shown, in the open state, the two lock tongues 3 at both ends of the first connecting rod 4 (the lock tongue 3 at the top end of the first connecting rod 4 and the lock tongue 3 at the bottom end of the first connecting rod 4) are close to each other and tilted in the direction from the door post 11 to the first connecting rod 4 (the direction from right to left on the drawing), wherein the dotted line L2 indicates the tilting direction of the lock tongue 3 at the top end of the first connecting rod 4, and the dotted line L3 indicates the tilting direction of the lock tongue 3 at the bottom end of the first connecting rod 4, and the two lock tongues 3 are tilted in an "eight" shape. In other examples of this connection method, the two lock tongues 3 at both ends of the first connecting rod 4 can also be tilted away from each other in the direction from the door post 11 to the first connecting rod 4 (the "eight" shape tilting opposite to the tilting direction in the drawing).

[0088] Reference Fig.10 In the open state, one end of the first connecting rod 4 is rotatably connected to one of the two locking tongues 3 (for example, Fig.10 The locking tongue 3a in the first connecting rod 4 (the locking tongue 3 at the top of the first connecting rod 4) is connected to the door panel 2 at a position away from the door post 11 (for example, the left side of the position of the locking tongue 3 and the door panel 2 in the figure). The other end of the first connecting rod 4 is connected to the other locking tongue 3 of the two locking tongues 3 (for example, Fig.10 The rotational connection position of the lock tongue 3b in the first connecting rod 4 and the lock tongue 3 at the bottom end of the first connecting rod 4 with the door panel 2 is close to the side of the door post 11 (for example, the right side of the rotational connection position of the lock tongue 3 and the door panel 2 in the figure).

[0089] That is, refer to Fig.10 In the open state, the rotational connection position between the lock tongue 3 at the top end of the first connecting rod 4 and the first connecting rod 4 is located on the side of the rotational connection position between the lock tongue 3 and the door panel 2 away from the door column 11; the rotational connection position between the lock tongue 3 and the first connecting rod 4 at the bottom end of the first connecting rod 4 is located on the side of the rotational connection position between the lock tongue 3 and the door panel 2 close to the door column 11.

[0090] In other examples, it may also be that, in the open state, the rotational connection position between the lock tongue 3 at the bottom end of the first connecting rod 4 and the first connecting rod 4 is located on the side of the rotational connection position between the lock tongue 3 and the door panel 2 away from the door column 11; the rotational connection position between the lock tongue 3 at the top end of the first connecting rod 4 and the first connecting rod 4 is located on the side of the rotational connection position between the lock tongue 3 and the door panel 2 close to the door column 11.

[0091] It can be understood that when the two lock tongues 3 in the open state are inclined in an "eight" shape, the first connecting rod 4 can be connected to different sides of the rotational connection position of the two lock tongues 3 and the door panel 2. Under this connecting rod mechanism, the two lock tongues 3 can also rotate synchronously to achieve linkage between the lock tongues 3, making the opening and closing operation of the door panel 2 more convenient.

[0092] And, in Fig.10In the example shown, in addition to the locking tongues 3 at both ends of the first connecting rod 4, other locking tongues 3 may also be included, for example, a locking tongue 3 connected to the locking tongue 3 at the top of the first connecting rod 4 through a third connecting rod 6, that is, a locking tongue 3 located at Fig.10 For the topmost locking tongue 3 of the four locking tongues 3, the third connecting rod 6 is located on the same side of the two connected locking tongues 3, and the dotted line L4 indicates the inclination direction of the locking tongue 3, and the dotted line L4 is parallel to the dotted line L2. For another example, the locking tongue 3 connected to the locking tongue 3 at the bottom of the first connecting rod 4 through the fourth connecting rod 7, that is, located Fig.10 For the bottommost lock tongue 3 among the four lock tongues 3 , the fourth connecting rod 7 is located on the same side of the two connected lock tongues 3 , and the dotted line L5 indicates the inclination direction of the lock tongue 3 , and the dotted line L5 is parallel to the dotted line L3 .

[0093] The structure in which the two ends of the third connecting rod 6 are connected to a locking tongue 3, and the structure in which the two ends of the fourth connecting rod 7 are connected to a locking tongue 3, can be understood as Fig. 9 The first connecting rod 4 is connected to a structure with two locking tongues 3.

[0094] In addition, the positions of the first connecting rod 4 and the multiple locking tongues 3 can be adjusted according to specific circumstances to adjust the direction in which the locking tongue 3 rotates toward the accommodating cavity (for example, upward or downward), and the present application does not impose specific restrictions on this.

[0095] Fig. 9 The examples shown and Fig.10 The examples shown are different in the connection positions of the first connecting rod 4 and the plurality of locking tongues 3, that is, whether the connection positions of the first connecting rod 4 and the plurality of locking tongues 3 are on the same side as the connection positions of the corresponding locking tongues 3 and the door panel 2. In addition, in different connection examples of the first connecting rod 4, the inclination directions of the plurality of locking tongues 3 are also different. For example, Fig. 9 The first connecting rod 4 is connected to the same side of the plurality of locking tongues 3, so that the plurality of locking tongues 3 have the same inclination direction in the open state. Fig.10 The two ends of the first connecting rod 4 are respectively connected to different sides of the corresponding two locking tongues 3, so the inclination direction of the locking tongues 3 at the two ends of the first connecting rod 4 in the open state is similar to an "eight" shape.

[0096] It should be noted that in Fig. 9 and Fig.10 In the example of FIG. 1 , the plurality of lock tongues 3 are distributed in the vertical direction. In other examples, the plurality of lock tongues 3 can also be distributed in the horizontal direction. Fig. 9 and Fig.10 The structure in the embodiment is rotated 90° and adaptively adjusted to obtain multiple lock tongues 3 distributed in the horizontal direction and capable of being linked. In other examples, other connection methods can also be used to connect the first connecting rod 4 and the multiple lock tongues 3. For example, Fig. 9In the connection mode, when in the open state, the inclination directions of the multiple lock tongues 3 do not need to be completely parallel. Since there are many ways to achieve linkage of the connecting rod structure, this application will not describe them one by one here, as long as one of the lock tongues 3 can drive the other lock tongues 3 to rotate through the first connecting rod 4.

[0097] When the door panel 2 needs to be closed to seal the box body 1, one of the lock tongues 3 is rotated toward the door column 11. The lock tongue 3 can be understood as an active lock tongue 3. The rotated lock tongue 3 drives the other lock tongues 3 to rotate through the first connecting rod 4. The other driven lock tongues 3 can be understood as driven lock tongues 3. Driven by the active lock tongue 3, all the lock tongues 3 rotate toward the lock port 111. Each lock tongue 3 passes through a corresponding lock port 111 and extends into the accommodating cavity of the door column 11. The contact between multiple lock tongues 3 and the door column 11 restricts the door panel 2 from opening, so that the energy storage box 100 is in a locked state. In this state, refer to Figure 7 and Figure 8 , the door panel 2 of the energy storage box 100 is closed to protect the internal structure of the box body 1.

[0098] When the door panel 2 needs to be opened, one of the lock tongues 3 is rotated in the opposite direction. Driven by the lock tongue 3, all the lock tongues 3 are rotated to the outside of the lock opening 111. At this time, the energy storage box 100 is in the open state. Figure 6 In this state, the door panel 2 can be rotated outwards and opened at any time.

[0099] Through the solution of the present application, the door panel 2 and the box body 1 can be fixed together through multiple locking points (multiple lock tongues 3 and corresponding lock ports 111), so that the door panel 2 and the box body 1 are stably connected. When the energy storage box 100 explodes, the contact between the multiple lock tongues 3 and the door pillars 11 restricts the door panel 2 from opening, thereby reducing the scope of damage caused by the explosion. In addition, the multiple lock tongues 3 are linked, and rotating one lock tongue 3 can cause multiple lock tongues 3 to rotate synchronously, making the opening and closing operation of the door panel 2 more convenient.

[0100] In order to further improve the stability of the door panel 2 after closing in the locked state, in the example where multiple lock tongues 3 are distributed in the vertical direction, a lock block 12 may be provided on the top or bottom of the box body 1. Fig.11 The structure in which the top of the box body 1 is provided with a locking block 12 is shown as an example. Fig.11 The energy storage box 100 may further include a second connecting rod 5 and a locking pin 8. The locking tongue 3 closest to the locking block 12 is rotatably connected to the second connecting rod 5. The second connecting rod 5 is rotatably connected to the locking pin 8. A fixing block 23 with a through hole 231 is provided on the door panel 2. The through hole 231 passes through the fixing block 23 in a vertical direction, and the locking pin 8 slides in the through hole 231.

[0101] The rotation axis of the second connecting rod 5 relative to the connected lock tongue 3 and the rotation axis of the second connecting rod 5 relative to the lock pin 8 both extend in the thickness direction of the door panel 2. That is, the rotation axis of the second connecting rod 5 relative to the connected lock tongue 3 is parallel to the rotation axis of the second connecting rod 5 relative to the lock pin 8 and also parallel to the rotation axis of the lock tongue 3 relative to the door panel 2.

[0102] In the example where the locking block 12 is disposed on the top of the box body 1, in the open state, the locking pin 8 is located on the side of the locking block 12 close to the second connecting rod 5. This state can be referred to as Figure 3 The state of the top lock pin 8 and the lock block 12, the lock pin 8 in the open state is located below the lock block 12. In the locked state, the end of the lock pin 8 away from the second connecting rod 5 faces the lock block 12, Fig.11 This state is shown by way of example, in which the lock block 12 restricts the lock pin 8 from moving toward the side away from the inner space of the box body 1 , thereby restricting the door panel 2 from moving toward the side away from the inner space of the box body 1 .

[0103] There are many situations in which the lock pin 8 and the lock block 12 cooperate with each other. Fig.11 In the example shown, the lock pin 8 is located on the side of the door panel 2 facing the inner space of the box body 1, and the door panel 2 needs to be opened outward, so in the locked state, the end of the lock pin 8 away from the second connecting rod 5 is located on the side of the lock block 12 away from the door panel 2. In other examples, the lock pin 8 is located on the side of the door panel 2 away from the inner space of the box body 1, and the door panel 2 is opened outward, then in the locked state, the end of the lock pin 8 away from the second connecting rod 5 is located on the side of the lock block 12 facing the door panel 2. In some other examples, the lock block 12 is provided with an opening, and in the locked state, the end of the lock pin 8 away from the second connecting rod 5 extends into the above-mentioned opening, at which time, the end of the lock pin 8 away from the second connecting rod 5 also faces the lock block 12 (facing the wall of the opening surrounded by the lock block 12).

[0104] In addition, whether the rotational connection position of the second connecting rod 5 and the lock tongue 3 (the position indicated by arrow S3), and the rotational connection position of the first connecting rod 4 and the lock tongue 3 (the position indicated by arrow S2) are located on the same side of the rotational connection position of the lock tongue 3 and the door panel 2 (the position indicated by arrow S1) can be determined according to the circumstances.

[0105] For example, in Fig.11 In the example shown, in the process of transitioning from the open state to the locked state, the rotation process of the lock tongue 3 is a process of rotation from bottom to top, and in this example, the rotation connection position of the first connecting rod 4 and the lock tongue 3 is located on the side of the rotation connection position of the lock tongue 3 and the door panel 2 away from the door column 11. Therefore, in this example, in order to enable the lock pin 8 to move upward during the transition to the locked state, the rotation connection position of the second connecting rod 5 and the lock tongue 3 and the rotation connection position of the first connecting rod 4 and the lock tongue 3 are located on different sides of the rotation connection position of the lock tongue 3 and the door panel 2.

[0106] In other examples, in the process of transitioning from the open state to the locked state, the lock tongue 3 rotates from bottom to top, and in this example, the rotational connection position between the first connecting rod 4 and the lock tongue 3 is located on the side of the rotational connection position between the lock tongue 3 and the door panel 2 facing the door column 11. Therefore, in this example, in order to enable the lock pin 8 to move upward during the transition to the locked state, the rotational connection position between the second connecting rod 5 and the lock tongue 3 and the rotational connection position between the first connecting rod 4 and the lock tongue 3 can be located on the same side of the rotational connection position between the lock tongue 3 and the door panel 2.

[0107] In this way, a variety of different structures of the rotational connection position of the second connecting rod 5 and the lock tongue 3 can be derived, as long as it can be achieved that: in the open state, the lock pin 8 is located on the side of the lock block 12 close to the second connecting rod 5, and in the locked state, the end of the lock pin 8 away from the second connecting rod 5 faces the lock block 12, and the lock block 12 restricts the lock pin 8 from moving toward the side away from the internal space of the box body 1. This application will not give examples one by one.

[0108] In some examples, a lock block 12 is disposed at the bottom of the box body 1, that is, the lock tongue 3 located at the bottom of the plurality of lock tongues 3 connects the second connecting rod 5 and the lock pin 8. In this example where the lock block 12 is disposed at the bottom of the box body 1, in the open state, the lock pin 8 is located on the side of the lock block 12 close to the second connecting rod 5. This state can be referred to Figure 3 The state of the middle bottom lock pin 8 and the lock block 12, the lock pin 8 in the open state is located above the lock block 12. In the locked state, the end of the lock pin 8 away from the second connecting rod 5 faces the lock block 12. This state can be referred to Figure 7 The state of the middle bottom locking pin 8 and the locking block 12 , at this time the locking block 12 can limit the locking pin 8 from moving toward the side away from the internal space of the box body 1 .

[0109] exist Figure 3 and Figure 7 In the example shown, locking blocks 12 are provided at the bottom and top of the box body 1, that is, among the multiple lock tongues 3, the top lock tongue 3 and the bottom lock tongue 3 are provided with a first connecting rod 4 and a locking pin 8. In some examples, the upper and lower lock pins 8 can also be called "heaven and earth lock pins". Fig. 9 and Fig.10 The middle dotted lines L6 and L7 are the comparison lines for the movement of the upper and lower locking pins 8, which can more intuitively show the position difference between the upper and lower locking pins 8 when the energy storage box 100 is in the open state and the locked state.

[0110] In addition, the lock pin 8 and the lock tongue 3 move synchronously, making the opening and closing operation of the door panel 2 more convenient, and using a simple structure to keep the door panel 2 in a stable closed state during an explosion, can enhance the explosion-proof capability of the energy storage box 100.

[0111] In order to facilitate the control of the rotation of the locking tongue 3, in one example, the energy storage box 100 may further include a crank 9. Fig.12 The structure of the crank 9 is shown as an example. Fig.12 This is a perspective from outside the box body 1 facing the door panel 2. Among them, multiple lock tongues 3 are arranged on the side of the door panel 2 facing the internal space of the box body 1, that is, multiple lock tongues 3 are arranged on the inner side of the door panel 2, so that multiple lock tongues 3 will not occupy the outer space of the door panel 2, which is beneficial to prolonging the life of the lock tongue 3 and making the energy storage box 100 more beautiful. The crank 9 is arranged on the side of the door panel 2 away from the internal space of the box body 1, that is, the crank 9 is arranged on the outer side of the door panel 2, and the crank 9 is fixedly connected to one of the lock tongues 3 through a rotating shaft (not shown in the drawings), and the rotating shaft passes through the door panel 2. The crank 9 that controls the lock tongue 3 drives the lock tongue 3 to rotate through the rotating shaft passing through the door panel 2, so that the operator can control multiple lock tongues 3 in the box body 1 outside the box body 1, which is beneficial to rotating the lock tongue 3 to realize the opening and closing of the door panel 2.

[0112] Fig. 9 or Fig.10 Both show the positions of the crank 9 in the locked state and the open state. In the locked state, the crank 9 is vertically downward, and in the open state, the crank 9 is deflected to one side. Fig. 9 and Fig.10 The position of the middle crank 9 is only an example, not a limitation on the rotation position of the crank 9 of the present application. In other examples, the position of the crank 9 in the locked state and the open state can also be set as needed. For example, in the locked state, the length direction of the crank 9 is set along the water direction.

[0113] In addition, while the crank 9 drives the lock tongue 3 to rotate, it can also extend and retract in a direction perpendicular to the door panel 2. For example, the rotating shaft connecting the crank 9 and the lock tongue 3 is a telescopic shaft, and the rotating shaft includes two shafts (a solid shaft and a sleeve shaft) that are mutually sleeved. The two shafts can slide against each other, and there is a rotation limit between the two shafts, so that one shaft can drive the other shaft to rotate without affecting the extension and retraction. For another example, the rotating shaft passes through the lock tongue 3 and has a rotation limit between the lock tongue 3, so that it can slide relative to the lock tongue 3 in a direction perpendicular to the door panel 2, and can also drive the lock tongue 3 to rotate.

[0114] In the above example where the crank 9 can be extended and retracted, return to reference Fig.12 The door panel 2 is also provided with a receiving groove 22 on the surface of the panel facing away from the inner space of the box body 1, and the crank handle 9 in the locked state can be retracted into the receiving groove 22, and the receiving groove 22 is used to accommodate the crank handle 9 in the locked state. When the crank handle 9 needs to be turned, the crank handle 9 can be pulled out of the receiving groove 22.

[0115] Fig.13 The state of the door panel 2 being opened is shown as an example. Fig.13In the example shown, the door panel 2 is located on the side of the door column 11 away from the internal space of the box body 1, the edge of the door panel 2 on one side is rotatably connected to the box body 1, and a plurality of locking tongues 3 are provided on the edge on the other side. In the locked state, the movable edge of the door panel 2 is connected to the door column 11 through a plurality of locking tongues 3 and locking pins 8, thereby improving the stability of the connection between the door panel 2 and the door column 11, reducing the possibility of the door panel 2 being opened, and improving the explosion-proof capability of the energy storage box 100.

[0116] When the door panel 2 is closed, the energy storage box 100 is in a locked state. In order to make the door panel 2 more tightly sealed to the box body 1, a sealing strip 21 may be provided on the door panel 2 or the door column 11. Fig.13 , the sealing strip 21 is in the shape of a square frame and is arranged on the wall of the door panel 2 facing the internal space of the box body 1. In other examples, the sealing strip 21 can be arranged on the box body 1 (at least part of it is located on the door post 11). In the locked state, at least part of the sealing strip 21 is sandwiched between the door panel 2 and the door post 11. The sealing strip 21 plays the role of sealing the door panel 2 and the box body 1 to prevent the leakage of substances or gases inside the box body 1, and also reduces the possibility of external influence on the inside of the box body 1. For example, the provision of the sealing strip 21 can make the energy storage box 100 reach the IPX5 waterproof level when the door panel 2 is closed (this waterproof level is not a limitation on the sealing strip of this application).

[0117] In order to allow the sealing strip 21 to be clamped between the door panel 2 and the door column 11, the door column 11 may be improved. In one example, a pressing surface 112 and a first inclined surface 113 may be provided in the accommodating cavity. Fig.14 The structure of providing a pressing surface 112 and a first inclined surface 113 in a lock housing 116 is exemplarily shown, and the plurality of lock openings 111 include a first lock opening 1115, for example, Fig.14 The lock opening 111 on the middle lock housing 116 is a first lock opening 1115, and the pressing surface 112 is located on the side of the first lock opening 1115 close to (or facing) the accommodating cavity. When the door panel 2 is closed on the box body 1, the pressing surface 112 is located on the first lock opening 1115 away from the first connecting rod 4 (the position of the first connecting rod 4 can be used as an auxiliary reference). Figure 8 ), that is, the pressing surface 112 is located in the chamber 1161 corresponding to the first lock opening 1115. Part of the wall surface of the door column 11 that forms the first lock opening 1115 (hereinafter referred to as the entrance surface 1114) is located on the side of the pressing surface 112 close to the door panel 2, and the pressing surface 112 is located on the side of the entrance surface 1114 that is away from the door panel 2, or in other words, the pressing surface 112 is farther from the door panel 2 than the entrance surface 1114 (the position of the door panel 2 can be referred to as an auxiliary reference). Figure 8 ), the first inclined surface 113 is arranged between the above-mentioned partial wall surface (inlet surface 1114) and the pressing surface 112, and the first inclined surface 113 is inclined from the above-mentioned partial wall surface (inlet surface 1114) toward the pressing surface 112.

[0118] It should be noted that the wall surface of the door column 11 that forms the first lock opening 1115 does not need to be entirely located on the side of the pressing surface 112 facing the door panel 2. Only a portion (the entrance surface 1114) is sufficient as the entry surface for the lock tongue 3 to slide into the first lock opening 1115. The wall surface of this portion can be a relatively obvious surface or very narrow. However, as long as it is a mouth-shaped structure, there will be an edge close to the door panel 2. As long as a portion of the edge is closer to the door panel 2 than the pressing surface 112 (the position of the door panel 2 can be referred to as an auxiliary reference), the first lock opening 1115 is not necessarily located on the side of the door panel 2 facing the door panel 2. Figure 8 The edge of the portion closer to the door panel 2 is a solid body, and a wall is formed. The wall formed by the edge of the first lock opening 1115 closer to the door panel 2 than the pressing surface 112 is the entrance surface 1114.

[0119] Furthermore, it can be understood that the position of the entrance surface 1114 is the position where the lock tongue 3 rotates to enter the accommodating cavity. Fig.15 The positional relationship between the lock tongue 3 and the lock housing 116 in the open state is shown by way of example, wherein the dotted line L8 is the relative position of the lock tongue 3 to the door panel 2 (the position of the door panel 2 can be used as an auxiliary reference). Figure 8 ), the arrow around the dotted line L8 is the rotation direction of the lock tongue 3 during the transition of the energy storage box 100 from the open state to the locked state, that is, Fig.15 The locking tongue 3 shown needs to be rotated from bottom to top to enter the receiving cavity. Fig.15 In the example shown, the lock tongue 3 rotates from the entrance surface 1114 along the rotation direction into the chamber 1161 of the lock housing 116 (wherein, as explained above, each chamber 1161 of the lock housing 116 is a part of the accommodating cavity).

[0120] When the door panel 2 is closed, the lock tongue 3 is rotated into the accommodating cavity. During the rotation of the lock tongue 3, it enters from the entrance surface 1114 and slides along the first inclined surface 113. Since the first inclined surface 113 is inclined in the direction away from the door panel 2, the lock tongue 3 gradually presses the door panel 2 against the door column 11 during the process of abutting the first inclined surface 113. During the process of pressing the door panel 2, the sealing strip 21 is clamped between the door panel 2 and the door column 11 until the lock tongue 3 rotates to the pressing surface 112, wherein, Fig.16 The example shows the situation where the lock tongue 3 rotates into the lock housing 116 and presses against the pressing surface 112 .

[0121] When the lock tongue 3 rotates to the pressing surface 112, the lock tongue 3 stops rotating, and the door panel 2 stays in the state of clamping the sealing strip 21 together with the door column 11. That is, in the locked state, the lock tongue 3 passing through the first lock port 1115 abuts against the pressing surface 112, and at least part of the sealing strip 21 is clamped between the door panel 2 and the door column 11, so that the sealing strip 21 can better play a sealing role.

[0122] In addition, in order to make the rotation more stable, a second inclined surface 114 may be provided in the accommodating cavity. Fig.14 The second inclined surface 114 and the pressing surface 112 are distributed along the length direction of the door column 11, the second inclined surface 114 is inclined from the pressing surface 112 toward the door panel 2, the first inclined surface 113 is located on the side of the second inclined surface 114 close to the first connecting rod 4, and the first inclined surface 113 is inclined from a partial wall surface (the partial wall surface refers to the wall surface of the first lock port 1115 surrounded by the door column 11 in the above text, which is located on the side of the pressing surface 112 close to the door panel 2, that is, the entrance surface 1114) to the second inclined surface 114.

[0123] The first inclined surface 113 is located at the lock opening 111, and the second inclined surface 114 is located on the inner side of the first inclined surface 113. When the lock tongue 3 rotates toward the accommodating cavity, since the side of the first inclined surface 113 closer to the first lock opening 1115 is close to the door panel 2, it is easy for the lock tongue 3 to extend into the cavity 1161. After the lock tongue 3 presses against the first inclined surface 113, it will move toward the second inclined surface 114, and gradually press the door panel 2 against the door post 11 during the movement on the first inclined surface 113.

[0124] Then the lock tongue 3 rotates from the second inclined surface 114 to the pressing surface 112. According to the rotation trajectory of the lock tongue 3, the second inclined surface 114 and the pressing surface 112 are distributed along the extension direction of the door column 11, which is more conducive to the lock tongue 3 rotating to the pressing surface 112. Fig.15 and Fig.16 When the energy storage box 100 changes to the locked state, the lock tongue 3 rotates upward, and the second inclined surface 114 is located below the pressing surface 112 (the position of the pressing surface 112 is auxiliary reference Fig.14 In other examples, if the lock tongue 3 rotates downward when the energy storage box 100 changes to the locked state, the second inclined surface 114 is located above the pressing surface 112. Similarly, in some examples, if the lock tongue 3 rotates rightward when the energy storage box 100 changes to the locked state, the second inclined surface 114 is located on the left side of the pressing surface 112.

[0125] Since the second inclined surface 114 is inclined toward the side away from the door panel 2, when the lock tongue 3 moves toward the pressing surface 112 on the second inclined surface 114, the door panel 2 will be gradually pressed against the door post 11, thereby achieving close contact between the door panel 2 and the door post 11. The present application provides the first inclined surface 113 and the second inclined surface 114, so that the lock tongue 3 rotates smoothly, the door panel 2 and the door post 11 gradually clamp the sealing strip 21, which is beneficial to the sealing of the energy storage box 100 and also facilitates the rotation of the lock tongue 3.

[0126] In some examples, the pressing surface 112, the first inclined surface 113 and the second inclined surface 114 may be disposed in the chamber 1161 of each lock housing 116. Alternatively, in some examples, the pressing surface 112 and the first inclined surface 113 may be disposed in the chamber 1161 of each lock housing 116.

[0127] In other examples, refer to Fig.17 , Fig.17 Another structure of a pressing surface 112 and a first inclined surface 113 is shown by way of example. In this example, the door column 11 is a hollow structure. A receiving cavity extending along the length direction of the door column 11 is provided inside the door column 11. A lock opening 111 is provided on the side wall of the door column 11 facing the lock tongue 3. A mounting plate 117 is provided inside the door column 11. The mounting plate 117 is connected to the wall surface of the inner wall surface of the door column 11 close to the door panel 2. The pressing surface 112 and the first inclined surface 113 are formed on the side of the mounting plate 117 away from the door panel 2 to guide the lock tongue 3. In this example, the second inclined surface 114 may not be provided. In addition, a plurality of mounting plates 117 distributed along the length direction of the door column 11 may be provided, and each mounting plate 117 is provided corresponding to a lock opening 111.

[0128] In some examples, the plurality of locking tongues 3 include a first locking tongue 31, and the end of the first locking tongue 31 for extending into the accommodating cavity is provided with a protruding structure 32. Fig.15 and Fig.16 The protruding structure 32 protrudes toward the outer periphery of the end of the first locking tongue 31. Fig.15 and Fig.16 In the example, the protruding structure 32 protrudes toward the periphery of the first locking tongue 31 to form a flange structure. In other examples, the protruding structure 32 may protrude only toward one side of the outer periphery of the end of the first locking tongue 31. For example, the protruding structure 32 may be similar to a cam protruding toward one side, or a triangular plate or a five-star plate protruding toward multiple sides of the periphery. Such structures all belong to the protruding structure 32 protruding toward the outer periphery of the end of the first locking tongue 31 described in the present application.

[0129] In some examples, the protruding structure 32 protrudes toward the outer periphery of the end of the first locking tongue 31, which can also be understood as the protruding direction of the protruding structure 32 is perpendicular to the length direction of the first locking tongue 31. If the protruding structure 32 protrudes in multiple directions, any protruding direction is perpendicular to the length direction of the first locking tongue 31. The length direction of the first locking tongue 31 refers to the direction from the end of the first locking tongue 31 connected to the protruding structure 32 to the end of the first locking tongue 31 away from the protruding structure 32 (the other end that is opposite to the end connected to the protruding structure 32).

[0130] Reference Fig.16 In the locked state, the protruding structure 32 is located in the accommodating cavity ( Fig.16The cavity 1161 in the cavity is part of the accommodating cavity), and at least a portion (e.g., an edge portion) of the protruding structure 32 faces the door column 11 to provide a side wall of a plurality of lock openings 111. The side wall of the lock opening 111 facing the door column 11 is understood to be a side wall of the door column 11 close to the lock tongue 3, for example, Fig.16 The lock housing 116 is close to the side wall of the first lock tongue 31, and a portion of the protruding structure 32 faces the wall of the side wall toward the accommodating cavity, that is, the wall of the side wall facing the protruding structure 32 can limit the outward movement of the protruding structure 32.

[0131] When the energy storage box 100 explodes, the door panel 2 bulges outward, and the abutment between the protruding structure 32 and the door post 11 can limit the lock tongue 3 from being completely pulled out of the door post 11, so that the door panel 2 will not be opened under the impact, thereby enhancing the firmness of the connection between the door panel 2 and the door post 11. The present application uses a structure that is as simple as possible to keep the door panel 2 closed during the explosion, thereby reducing the scope of damage caused by the explosion of the energy storage box 100.

[0132] In some examples, reference Fig.15 The protruding structure 32 is rotationally connected to the first lock tongue 31. The rotation axis of the protruding structure 32 relative to the first lock tongue 31 is perpendicular to the rotation axis of the first lock tongue 31 relative to the door panel 2 (dashed line L8). The outer peripheral wall of the protruding structure 32 forms an annular surface 321, and the annular surface 321 surrounds the rotation axis of the protruding structure 32 relative to the first lock tongue 31.

[0133] Through the above-mentioned design, when the lock tongue 3 rotates into the accommodating cavity, the protruding structure 32 is likely to contact the edge of the lock port 111 and the inner wall of the accommodating cavity. Especially in the example where the first inclined surface 113 and the pressing surface 112 are set, the rolling protruding structure 32 can convert the sliding friction into rolling friction, thereby reducing the friction force of the protruding structure 32 rotating in the lock port 111 and the accommodating space, which is more conducive to the rotation of the lock tongue 3 and makes the operator's operation of opening or closing the door panel 2 more labor-saving.

[0134] In order to facilitate the restriction of the protruding structure 32, refer to Fig.14 and Fig.15 The lock opening 111 through which the protruding structure 32 passes includes a communicating through opening 1111 and a limiting opening 1112, wherein Fig.14 In the example shown, the door post 11 (the position of the door post 11 can be used as an auxiliary reference) is arranged along the door post 11 through the opening 1111 and the stop opening 1112. Fig.13 Moreover, the through opening 1111 and the limiting opening 1112 both extend along the length direction of the door post 11, and one end of the through opening 1111 close to the limiting opening 1112 is connected to one end of the limiting opening 1112 close to the through opening 1111.

[0135] In the direction parallel to the rotation axis of the first locking tongue 31 relative to the door panel 2 (the direction of the dotted line L8), the size of the through opening 1111 is larger than the size of the limiting opening 1112, that is, the limiting opening 1112 is similar to a shrinking structure. For example, it can be understood that the limiting opening 1112 is based on the size of the through opening 1111, and a plate-like structure that acts as a stopper is added on both sides. The through opening 1111 is used for the protruding structure 32 to extend into the accommodating cavity, and the limiting opening 1112 is used to limit the protruding structure 32. In the open state, the protruding structure 32 is located outside the door column 11 and faces the through opening 1111. When the locking tongue 3 extends into the accommodating cavity, it will first pass through the through opening 1111. As the locking tongue 3 rotates, it will gradually extend into the side of the limiting opening 1112 away from the first connecting rod 4. At this time, the energy storage box 100 is in a locked state, the protruding structure 32 is located on the side of the limiting opening 1112 away from the first connecting rod 4, and the side wall (the side wall of the door column 11 with multiple locking openings 111) around the limiting opening 1112 faces the protruding structure 32, for example, the side walls on both sides of the limiting opening 1112 face the protruding structure 32.

[0136] The protruding structure 32 is directly opposite to the side wall around the limiting opening 1112, and the side wall around the limiting opening 1112 has a limiting effect on the protruding structure 32, reducing the possibility of the protruding structure 32 being pulled out of the accommodating cavity. In the present application, the locking tongue 3 is configured to include a structure including the through opening 1111 and the limiting opening 1112, which can not affect the extension of the protruding structure 32, but can also achieve the limiting of the protruding structure 32.

[0137] It is understandable that, in the example where the lock opening 111 includes the communicating through opening 1111 and the limiting opening 1112, the positions of the through opening 1111 and the limiting opening 1112 are adjusted according to the rotation of the lock tongue 3. For example, when the locking process of the lock tongue 3 is an upward rotation process, the through opening 1111 is located below the limiting opening 1112. For another example, when the locking process of the lock tongue 3 is a downward rotation process, the through opening 1111 is located above the limiting opening 1112.

[0138] When a person locks the door, the door panel 2 actually tends to open outwards, so when the lock tongue 3 rotates, it often abuts against the wall of the lock opening 111 close to the door panel 2. Especially for the relatively small limit opening 1112, when the lock tongue 3 rotates into the limit opening 1112, it will collide with the corner where the limit opening 1112 and the through opening 1111 are connected, so the transition surface 1113 is provided to guide the lock tongue 3.

[0139] In one example, referring to Fig.14A transition surface 1113 is connected between the wall surface of the door post 11 that forms the through opening 1111 and the wall surface of the door post 11 that forms the limiting opening 1112. The transition surface 1113 is located on the side of the limiting opening 1112 close to the door panel 2. The transition surface 1113 is inclined toward the side away from the door panel 2 in the direction from the through opening 1111 to the limiting opening 1112. The transition surface 1113 can be similar to a chamfered surface, which plays a role in guiding the lock tongue 3 to smoothly transition from the through opening 1111 to the limiting opening 1112, thereby reducing the possibility of stagnation of the lock tongue 3 during rotation.

[0140] In some examples, a transition surface 1113 may also be provided on the side of the limiting opening 1112 facing away from the door panel 2 .

[0141] exist Fig.17 In the example shown, the structures of the through opening 1111 and the limiting opening 1112 may be as shown in the figure. In this example, transition surfaces 1113 are provided on both sides of the limiting opening 1112 .

[0142] In the example of setting the first inclined surface 113 and the clamping surface 112, the clamping surface 112 can be located on the side of the limiting opening 1112 (the side away from the first connecting rod 4), and the first inclined surface 113 can be set on the side of the through opening 1111 (the side away from the first connecting rod 4).

[0143] In some examples, each locking opening 111 includes a through opening 1111 and a limiting opening 1112 that are connected.

[0144] In some other examples where the lock tongue 3 is provided with a protruding structure 32, the lock opening 111 may not be divided into a passing opening 1111 and a limiting opening 1112, as long as the protruding structure 32 in the locked state can face part of the side wall around the lock opening 111, and the two can abut against each other when the protruding structure 32 moves outward, so as to limit the protruding structure 32 from detaching from the door column 11.

[0145] In some examples, the door panel 2 may be provided in plurality, and the door pillar 11 may also be provided in plurality. Fig.18 The structure of multiple door posts 11 arranged side by side is shown as an example, and the ellipsis on both sides represents the omission of the structure on both sides. Fig.18 The door panel 2 and other structures are also omitted. Fig.18 The four door posts 11 are named door post A, door post B, door post C and door post D from left to right. One door panel 2 can be rotatably connected to door post A, and the lock tongue 3 on the door panel 2 can be extended into the accommodating cavity of door post B. Another door panel 2 can be rotatably connected to door post B, and the lock tongue 3 on the door panel 2 can be extended into the accommodating cavity of door post C, and so on. That is, each of the multiple door panels 2 can be provided with a lock tongue 3, and the corresponding door posts 11 can be provided with multiple lock openings 111 and accommodating cavities.

[0146] In the present application, the description involving reference to the door panel 2 or the structure on the door panel 2 is based on the state of the door panel 2 when it is closed in the locked state. For details, please refer to the state in the accompanying drawings, but the energy storage box 100 of the present application is not limited to the state in the accompanying drawings.

[0147] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An energy storage box, characterized in that: It includes a box body, a door panel, a first connecting rod and a plurality of locking tongues. The door panel is rotatably connected to the box body, the multiple lock tongues are located on the same side of the door panel in the thickness direction and are all rotatably connected to the door panel, the multiple lock tongues are all rotatably connected to the first connecting rod, the rotation axis of each lock tongue relative to the door panel and the rotation axis of each lock tongue relative to the first connecting rod both extend along the thickness direction of the door panel, and one of the multiple lock tongues is used to drive the other lock tongues of the multiple lock tongues to rotate through the first connecting rod. The box body is provided with a door post, the length direction of the door post is the same as the distribution direction of the multiple lock tongues, a receiving cavity is provided in the door post, a side of the door post facing the multiple lock tongues is provided with multiple lock openings spaced apart along the length direction of the door post, and the receiving cavity is communicated with the multiple lock openings; The energy storage box has an open state and a locked state. In the open state, the multiple lock tongues are located outside the door column. In the locked state, one end of each lock tongue passes through a lock port and extends into the accommodating cavity.

2. The energy storage box according to claim 1, characterized in that: The plurality of locking tongues include a first locking tongue, an end of the first locking tongue for extending into the accommodating cavity is provided with a protruding structure, and the protruding structure protrudes toward the outer periphery of the end of the first locking tongue, In the locked state, the protruding structure is located in the accommodating cavity, and at least a portion of the protruding structure faces the side wall of the door column on which the multiple locking openings are arranged.

3. The energy storage box according to claim 2, characterized in that: The lock opening for the protruding structure to pass through comprises a communicating through opening and a limiting opening, wherein the through opening and the limiting opening are distributed along the length direction of the door column, and in a direction parallel to the rotation axis of the first lock tongue relative to the door panel, the size of the through opening is larger than the size of the limiting opening, and the through opening is used for the protruding structure to extend into the accommodating cavity, In the open state, the protruding structure is located outside the door post and faces the passage. In the locked state, the protruding structure is located on a side of the limiting opening away from the first connecting rod, and a portion of the side wall around the limiting opening faces the protruding structure.

4. The energy storage box according to claim 3, characterized in that: A transition surface is connected between the wall surface of the door column that forms the through opening and the wall surface of the door column that forms the limiting opening. The transition surface is located on the side of the limiting opening close to the door panel, and the transition surface is inclined toward the side away from the door panel in the direction from the through opening to the limiting opening.

5. The energy storage box according to any one of claims 2 to 4, characterized in that: The protruding structure is rotationally connected to the first lock tongue, the rotation axis of the protruding structure relative to the first lock tongue is perpendicular to the rotation axis of the first lock tongue relative to the door panel, and the outer peripheral wall of the protruding structure forms an annular surface, which surrounds the rotation axis of the protruding structure relative to the first lock tongue.

6. The energy storage box according to any one of claims 1 to 4, characterized in that: A pressing surface and a first inclined surface are provided in the accommodating cavity, the plurality of lock openings include a first lock opening, the pressing surface is located on a side of the first lock opening close to the accommodating cavity, a portion of the wall surface of the door column that forms the first lock opening is located on a side of the pressing surface close to the door panel, the first inclined surface is provided between the portion of the wall surface and the pressing surface, and the first inclined surface is inclined from the portion of the wall surface toward the pressing surface, A sealing strip is provided on the door panel or the door post. In the locked state, the lock tongue passing through the first lock port abuts against the pressing surface, and at least a portion of the sealing strip is sandwiched between the door panel and the door post.

7. The energy storage box according to claim 5, characterized in that: A pressing surface and a first inclined surface are provided in the accommodating cavity, the plurality of lock openings include a first lock opening, the pressing surface is located on a side of the first lock opening close to the accommodating cavity, a portion of the wall surface of the door column that forms the first lock opening is located on a side of the pressing surface close to the door panel, the first inclined surface is provided between the portion of the wall surface and the pressing surface, and the first inclined surface is inclined from the portion of the wall surface toward the pressing surface, A sealing strip is provided on the door panel or the door post. In the locked state, the lock tongue passing through the first lock port abuts against the pressing surface, and at least a portion of the sealing strip is sandwiched between the door panel and the door post.

8. The energy storage box according to claim 6, characterized in that: A second inclined surface is provided in the accommodating cavity, and the second inclined surface and the pressing surface are distributed along the length direction of the door column. The second inclined surface is inclined from the pressing surface toward the door panel, and the first inclined surface is located on the side of the second inclined surface close to the first connecting rod, and the first inclined surface is inclined from the partial wall surface toward the second inclined surface.

9. The energy storage box according to any one of claims 1 to 4, characterized in that: The door column includes a hollow column and a plurality of lock shells, the extension direction of the hollow column is the same as the distribution direction of the plurality of lock tongues, a plurality of installation openings are provided on the side of the hollow column facing the plurality of lock tongues, the plurality of installation openings are spaced apart along the length direction of the hollow column, a lock shell is provided at each installation opening, each lock shell extends into the hollow column, a lock opening is provided on the side of each lock shell facing the plurality of lock tongues, a chamber connected to the corresponding lock opening is provided in each lock shell, and the accommodating chamber includes the chamber of each lock shell.

10. The energy storage box according to claim 5, characterized in that: The door column includes a hollow column and a plurality of lock shells, the extension direction of the hollow column is the same as the distribution direction of the plurality of lock tongues, a plurality of installation openings are provided on the side of the hollow column facing the plurality of lock tongues, the plurality of installation openings are spaced apart along the length direction of the hollow column, a lock shell is provided at each installation opening, each lock shell extends into the hollow column, a lock opening is provided on the side of each lock shell facing the plurality of lock tongues, a chamber connected to the corresponding lock opening is provided in each lock shell, and the accommodating chamber includes the chamber of each lock shell.

11. The energy storage box according to any one of claims 1 to 4, characterized in that: In the open state, the plurality of locking tongues have the same inclination direction, and the first connecting rod is arranged on the same side of the rotational connection positions of the plurality of locking tongues and the door panel.

12. The energy storage box according to any one of claims 1 to 4, characterized in that: In the open state, the two locking tongues at both ends of the first connecting rod are inclined away from each other or inclined toward each other in the direction from the door post to the first connecting rod. One end of the first connecting rod is rotatably connected to a side of one of the two locking tongues, where the rotational connection position of the locking tongue and the door panel is away from the door column. The other end of the first connecting rod is rotatably connected to a side of the door column at which the other of the two locking tongues is rotatably connected to the door panel.

13. The energy storage box according to any one of claims 1 to 4, characterized in that: The edge of one side of the door panel is rotatably connected to the box body, and the edge of the other side is provided with the multiple locking tongues, and the multiple locking tongues are distributed along the vertical direction.

14. The energy storage box according to claim 13, characterized in that: The energy storage box also includes a second connecting rod and a lock pin. A lock block is provided on the top or bottom of the box body. The lock tongue closest to the lock block is rotatably connected to the second connecting rod. The second connecting rod is rotatably connected to the lock pin. A fixed block with a through hole is provided on the door panel. The through hole passes through the fixed block in a vertical direction. The lock pin slides in the through hole. The rotation axis of the second connecting rod relative to the connected lock tongue and the rotation axis of the second connecting rod relative to the lock pin both extend along the thickness direction of the door panel. In the open state, the locking pin is located on a side of the locking block close to the second connecting rod. In the locked state, the end of the locking pin away from the second connecting rod faces the locking block, and the locking block restricts the locking pin from moving toward the side away from the internal space of the box.

15. The energy storage box according to any one of claims 1 to 4, characterized in that: The energy storage box also includes a crank handle, which is arranged on the side of the door panel facing away from the internal space of the box body, and the multiple lock tongues are arranged on the side of the door panel facing the internal space of the box body. The crank handle is fixedly connected to one of the lock tongues via a rotating shaft, and the rotating shaft passes through the door panel.

16. An energy storage system, characterized in that: The energy storage system comprises an energy storage box and a power converter as described in any one of claims 1 to 15, wherein the energy storage box and the power converter are electrically connected, and the power converter is used to perform power conversion on the voltage output by the energy storage box.

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