energy storage device

Abstract

The utility model discloses a kind of energy storage devices, it is related to energy storage technical field.Wherein, energy storage device includes box, battery device and fire door assembly;Battery device is located in box;At least one side of box is equipped with opening, fire door assembly is installed in opening place;Fire door assembly includes door frame, fire door plate and sealing door plate.The inner wall of door frame is equipped with recess.The inner wall of door frame is movably installed to fire door plate, and the edge of fire door plate is inserted into recess.Securing door plate is movably connected with door frame, and is arranged side by side with fire door plate along the thickness direction of door frame.Securing door plate has open state and closed state;When securing door plate is in closed state, sealing cooperation between securing door plate and door frame.The technical scheme of the utility model can improve the fireproof effect of energy storage device.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to an energy storage device. Background Technology

[0002] In energy storage devices, the device typically includes a housing and a sealed door on the housing. This sealed door usually only has watertightness and airtightness. The sealing strip between the sealed door and the door frame typically has low fire resistance, thus reducing the fire protection effect of the sealed door. Utility Model Content

[0003] The main purpose of this invention is to propose an energy storage device that aims to improve the fire resistance of the energy storage device.

[0004] To achieve the above objectives, the energy storage device proposed in this utility model includes a housing, a battery device, and a fireproof door assembly. The battery device is disposed within the housing. At least one side of the housing has an opening, and the fireproof door assembly is installed at the opening. The fireproof door assembly includes a door frame, a fireproof door panel, and a sealing door panel. The inner wall of the door frame has a groove. The fireproof door panel is movably installed on the inner wall of the door frame, and the edge of the fireproof door panel is engaged in the groove. The sealing door panel is movably connected to the door frame and is arranged side-by-side with the fireproof door panel along the thickness direction of the door frame. The sealing door panel has an open state and a closed state; when the sealing door panel is in the closed state, a sealing fit exists between the sealing door panel and the door frame.

[0005] This utility model's technical solution, by placing the battery device inside the enclosure and installing the fireproof door assembly at the enclosure's opening, allows the enclosure and fireproof door assembly to jointly protect the battery device. It also reduces the risk of flames entering the enclosure after an external fire and the risk of flames escaping from the enclosure after a fire inside. By installing a fireproof door panel and a sealing door panel on the door frame, both movably installed on the inner wall of the door frame, the sealing door panel provides a sealing fit with the door frame when closed, facilitating both sealing and opening the installation opening on the door frame, achieving both sealing and fireproofing effects. By creating a groove on the inner wall of the door frame, with the edge of the fireproof door panel fitting into the groove, the fireproof door panel, when sealing the installation opening of the door frame, can block the gap between the sealing door panel and the inner wall of the door frame, thus improving the fireproofing effect. Furthermore, the groove creates a tortuous channel between the fireproof door panel and the groove, further enhancing the fireproofing effect.

[0006] In one embodiment, the groove includes a bottom wall and two opposing side walls, the bottom wall connecting the two side walls and being arranged at an angle to the side walls.

[0007] This design ensures that fire inside or outside the energy storage device of the fire door assembly must bend at least twice when passing through the fire door panel, forming a maze-like passage with a long and winding path, thus improving fire resistance.

[0008] In one embodiment, a first gap is provided between the fireproof door panel and the groove wall of the groove.

[0009] This design allows smoke generated during a fire inside the enclosure to leak out through this point, reducing the air pressure inside the enclosure.

[0010] In one embodiment, the first gap is defined as L1, where 3mm ≤ L1 ≤ 5mm.

[0011] This design ensures that the fireproof door panel can slide flexibly within the groove, and also allows gas to pass through the first gap, thus facilitating the smooth discharge of smoke or gas from the energy storage device.

[0012] In one embodiment, a locking part is movably provided on the fireproof door panel, and a driving assembly is also provided on the fireproof door panel. The driving assembly is kinetically connected to the locking part and drives the locking part to have a locked state and an unlocked state. A stop part is provided on the door frame; when the locking part is in the locked state, the locking part and the stop part stop each other; when the locking part is in the unlocked state, the locking part can disengage from the stop part.

[0013] This design allows the fire door panel to have both a stable locked state and an open mounting port on the door frame.

[0014] In one embodiment, the locking part is a lock hook, and the driving assembly includes a lock cylinder, which is convexly connected to the lock hook to drive the lock hook to rotate; when the lock hook rotates to the locked state, the lock hook is hooked onto the stop part; when the lock hook rotates to the unlocked state, the lock hook disengages from the stop part.

[0015] This design allows the locking hook to be engaged with the stop and unlocked when rotated clockwise and counterclockwise, respectively. This facilitates locking the fire door panel to the door frame when the hook is engaged with the stop, and unlocking the fire door panel when the hook is disengaged. Furthermore, this design simplifies the structure of the locking mechanism and drive assembly on the fire door panel.

[0016] In one embodiment, the driving assembly includes a gear assembly and a rack. The gear assembly is rotatably mounted on the fireproof door panel, the rack meshes with the gear assembly, and the locking part is connected to the rack and slidably mounted on the fireproof door panel. When the locking part is in the locked state, the rack drives the locking part to extend at least partially out of the fireproof door panel and stop against the stop part. When the locking part is in the unlocked state, the rack drives the locking part to retract into the fireproof door panel.

[0017] This configuration makes the transmission effect of the drive component on the locking part more stable.

[0018] In one embodiment, the fire door assembly further includes a roller rotatably connected to the top of the door frame, the top of the fire door panel being connected to the roller and capable of being wound around the roller as it rotates.

[0019] This design allows the fireproof door panel to wind onto the roller as it rotates, thus enabling the fireproof door panel to be opened and stored on the roller. Furthermore, this design ensures that the fireproof door panel does not occupy the installation opening space on the door frame when open, which facilitates the installation of larger equipment inside the enclosure via the door frame.

[0020] In one embodiment, the fireproof door panel is provided with a plurality of spaced pressure strips, the extension direction of which is the same as the axial direction of the roller.

[0021] This design reduces the risk of wrinkles appearing on the outer surface of the fire door panel and also increases its strength. Furthermore, this design minimizes the risk of deformation of the pressure strip when the fire door is wound onto the roller, thus ensuring a stable pressing effect of the pressure strip on the fire door panel.

[0022] In one embodiment, the bottom end of the fireproof door panel is provided with a protective edging.

[0023] This design reduces the risk of damage or burrs at the bottom, thus providing good reinforcement and protection for the bottom of the fire door panel.

[0024] In one embodiment, a second gap is provided between the sealing door panel and the fireproof door panel.

[0025] This design reduces the temperature difference between the sealed door panel and the fireproof door panel.

[0026] In one embodiment, the second gap is defined as L2, where 30mm ≤ L2 ≤ 100mm.

[0027] This design reduces the temperature difference between the sealed door panel and the fireproof door panel, and also reduces the risk of the sealed door panel blocking the airflow channel.

[0028] In one embodiment, the sealed door panel includes a fireproof outer frame and a thermal insulation layer. The fireproof outer frame is movably connected to the door frame, and the thermal insulation layer is embedded within the outer frame; and / or, the fireproof door panel includes a heat insulation layer and a fireproof layer wrapped around the heat insulation layer.

[0029] This design ensures that both the sealed door panel and the fireproof door panel have good thermal insulation and fireproof properties.

[0030] In one embodiment, the sealing door panel is hinged to the door frame.

[0031] This design increases the opening area of ​​the mounting port on the door frame of the sealed door panel, making it easier for users to install larger equipment into or remove it from the enclosure through the door frame. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the energy storage device provided by this utility model;

[0034] Figure 2 for Figure 1 Partial sectional view of AA;

[0035] Figure 3 for Figure 2 A magnified view of a section at point B in the middle;

[0036] Figure 4 A schematic diagram of the connection structure between the fireproof door panel and the door frame in an embodiment of the energy storage device provided by this utility model;

[0037] Figure 5 for Figure 4 A magnified view of a section at point C;

[0038] Figure 6 A schematic diagram of the internal structure of another embodiment of the fireproof door panel and door frame in the energy storage device provided by this utility model;

[0039] Figure 7 for Figure 6 A magnified view of a section at point D;

[0040] Figure 8 for Figure 7 Top view;

[0041] Figure 9 for Figure 7 A schematic diagram of the structure when the central locking part is retracted into the fire door panel;

[0042] Figure 10 This is a front view of the energy storage device in this application after the sealing door panel has been removed;

[0043] Figure 11 This is an exploded structural diagram of the battery device in the energy storage device of this application;

[0044] Figure 12 This is an exploded structural diagram of a single battery cell in the energy storage device of this application.

[0045] Explanation of icon numbers:

[0046] 1. Energy storage device;

[0047] 100. Fire door assembly; 110. Door frame; 111. Mounting opening; 112. Groove; 1121. Side wall; 1122. Bottom wall; 120. Fire door panel; 121. Insulation layer; 122. Fireproof layer; 130. Sealing door panel; 131. Fireproof outer frame; 132. Thermal insulation layer; 140. Locking part; 150. Stop part; 160. Drive assembly; 161. Lock cylinder; 162. Gear assembly; 163. Rack; 170. Drum; 180. Pressure strip; 190. Protective edging; 101. First gap; 102. Second gap;

[0048] 200. Box body;

[0049] 300. Battery assembly; 310. Housing; 320. Battery cell; 321. End cap; 321a. Electrode terminal; 322. Housing; 323. Electrode assembly; 323a. Tab.

[0050] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0052] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0053] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0054] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0055] For example, in an energy storage device, the device includes a battery unit, a housing, and a sealed door on the housing. The battery unit is housed inside the housing, and the sealed door typically only provides watertightness and airtightness. The sealing strip between the sealed door and the door frame usually has low fire resistance, thus reducing the fireproofing effect of the sealed door.

[0056] In order to improve the fire resistance of energy storage devices, this utility model proposes an energy storage device 1.

[0057] Please refer to the reference. Figures 1 to 3 , Figure 11 as well as Figure 12In one embodiment of this utility model, the energy storage device 1 includes a housing 200, a battery device 300, and a fireproof door assembly 100; the battery device 300 is disposed inside the housing 200; at least one side of the housing 200 has an opening, and the fireproof door assembly 100 is installed at the opening; the fireproof door assembly 100 includes a door frame 110, a fireproof door panel 120, and a sealing door panel 130. The inner wall of the door frame 110 has a groove 112. The fireproof door panel 120 is movably installed on the inner wall of the door frame 110, and the edge of the fireproof door panel 120 is engaged in the groove 112. The sealing door panel 130 is movably connected to the door frame 110 and is arranged side by side with the fireproof door panel 120 along the thickness direction of the door frame 110. The sealing door panel 130 has an open state and a closed state; when the sealing door panel 130 is in the closed state, the sealing door panel 130 and the door frame 110 are sealed together.

[0058] The enclosure 200 can be a cuboid, cylinder, or other shape. Taking a cuboid enclosure 200 as an example, the enclosure 200 has a front, back, side, top, and bottom surface. Its opening can be located on at least one of the front, back, and side surfaces. The enclosure 200 houses a battery device 300 or some electrical components electrically connected to the battery device 300. The opening of the enclosure 200 is used to install a fire door assembly 100, allowing the opening to be opened or closed. This facilitates the installation or removal of equipment from the enclosure 200 by the user when both the fire door panel 120 and the sealing door panel 130 are open. When both the fire door panel 120 and the sealing door panel 130 are closed, it facilitates the handling and transportation of the energy storage device.

[0059] Please refer to the following for details. Figure 11 The battery device 300 includes a housing 310 and a battery cell 320, with the battery cell 320 housed within the housing 310. The housing 310 can have various structures. In some embodiments, the housing 310 may include a first portion and a second portion, which overlap each other, together defining a receiving space for accommodating the battery cell 320 and a control module. The second portion may be a hollow structure with one open end, and the first portion may be a plate-like structure, with the first portion covering the open side of the second portion so that the first and second portions together define the receiving space; alternatively, both the first and second portions may be hollow structures with one open side, with the open side of the first portion covering the open side of the second portion. Of course, the housing 310 formed by the first and second portions can have various shapes, such as a cylinder, a cuboid, etc.

[0060] Each battery cell 320 can be a secondary or primary battery; it can also be a lithium-sulfur battery, sodium-ion battery, or magnesium-ion battery, but is not limited to these. The battery cell 320 can be cylindrical, flat, cuboid, or other shapes. The battery cell 320 refers to the smallest unit that makes up the battery assembly 300. Please refer to the specific details. Figure 11 and Figure 12 The battery cell 320 includes an end cap 321, a housing 322, an electrode assembly 323, and other functional components.

[0061] End cap 321 refers to a component that covers the opening of housing 322 to isolate the internal environment of battery cell 320 from the external environment. The shape of end cap 321 can be adapted to the shape of housing 322 to fit it. Optionally, end cap 321 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 321 is less prone to deformation under pressure and impact, enabling battery cell 320 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 321a can be provided on end cap 321. Electrode terminals 321a can be used for electrical connection with electrode assembly 323 for outputting or inputting electrical energy into battery cell 320. In some embodiments, end cap 321 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 320 reaches a threshold. The end cap 321 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating member can also be provided on the inner side of the end cap 321. The insulating member can be used to isolate the electrical connection components in the housing 322 from the end cap 321 to reduce the risk of short circuit. For example, the insulating member can be plastic, rubber, etc.

[0062] The housing 322 is an assembly used to cooperate with the end cap 321 to form the internal environment of the battery cell 320. This internal environment can accommodate the electrode assembly 323, electrolyte, and other components. The housing 322 and the end cap 321 can be independent components. An opening can be provided on the housing 322, and the end cap 321 can be used to close the opening to form the internal environment of the battery cell 320. Alternatively, the end cap 321 and the housing 322 can be integrated. Specifically, the end cap 321 and the housing 322 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 322, the end cap 321 closes the housing 322. The housing 322 can have various shapes and sizes, such as cuboid, cylindrical, or hexagonal prism. Specifically, the shape of the housing 322 can be determined according to the specific shape and size of the electrode assembly 323. The shell 322 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special restrictions on this.

[0063] Electrode assembly 323 is the component in the battery cell 320 where the electrochemical reaction occurs. The casing 322 may contain one or more electrode assemblies 323. The electrode assembly 323 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 323, while the portions of the positive and negative electrode sheets without active material each constitute a tab 323a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery device 300, the positive and negative active materials react with the electrolyte, and the tabs 323a connect to the electrode terminals to form a current loop.

[0064] In the battery device 300, there can be multiple battery cells 320. These multiple battery cells 320 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that some of the multiple battery cells 320 are connected in series and others in parallel. Multiple battery cells 320 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of these multiple battery cells 320 is housed within the casing 310. (For further details, please refer to...) Figure 2 The battery device 300 can also consist of multiple battery cells 320 connected in series, parallel, or in a mixed configuration to form a single cell assembly, which is then connected in series, parallel, or in a mixed configuration to form a whole and housed within the housing 310. The battery device 300 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 320.

[0065] Please refer to the reference. Figure 2 and Figure 3The door frame 110 refers to a frame structure used to limit and fix the periphery of a door panel. The thickness direction of the door frame 110 refers to the direction from the inside to the outside of the door frame 110. The door frame 110 has a mounting opening 111, which penetrates the door frame in the thickness direction for mounting the door panel. The shape of the mounting opening 111 is adapted to the shape of the door panel. For example, when the door panel is rectangular, the mounting opening 111 can be rectangular; when the door panel is circular, the mounting opening 111 can be circular. It can be understood that one mounting opening 111 of the door frame 110 can correspond to one door panel or multiple door panels. The inner wall of the mounting opening 111 of the door frame 110 is provided with a groove 112, which allows the edge of the door panel to be engaged, thereby achieving a good fit for the door panel and also increasing the flame spread path and improving the flame blocking effect. The groove walls of the groove 112 can be connected sequentially from the inside to the outside of the door frame 110 to form an L-shape, U-shape, M-shape or other shapes.

[0066] Fireproof door panel 120 refers to a door panel that plays a primary fireproof role. When the fireproof door panel 120 is movably installed in the installation opening 111, it can rotate relative to the door frame 110, and can also translate vertically or horizontally relative to the door frame 110, thereby facilitating the fireproof door panel 120 to both block the installation opening 111 and open at least part of the installation opening 111. When the fireproof door panel 120 is in the state of blocking the installation opening 111, it can block fire on one side of the fireproof door panel 120, preventing fire on one side of the fireproof door panel 120 from penetrating to the other side of the fireproof door panel 120. The fireproof door panel 120 can have one, two, or multiple panels. The requirement is that multiple fireproof door panels 120 can effectively block the installation opening 111 and open at least part of the installation opening 111. The fireproof door panel 120 can be entirely made of metal or use a metal frame filled with a fire-resistant layer such as fire-resistant cotton. When the edge of the fireproof door panel 120 is inserted into the groove 112, the fireproof door panel 120 and the groove 112 can be fitted with a clearance fit; or when the fireproof door panel 120 blocks the installation opening 111 and its edge is inserted into the groove 112, a fireproof strip or the like can be sandwiched between its edge and the groove 112. The groove 112 can be provided around the entire periphery of the inner wall of the installation opening 111, or it can be provided only on the inner side wall 1121 of the installation opening 111.

[0067] The sealing door panel 130 refers to a door panel capable of blocking and sealing against external water, dust, etc. When the sealing door panel 130 is movably connected to the door frame 110, it can be connected by hinge or relative sliding, so that the sealing door panel 130 also has the effect of sealing the mounting opening 111 and opening at least part of the mounting opening 111. The sealing door panel and the fireproof door panel 120 are arranged side-by-side along the direction of the mounting opening 111. When the fireproof door assembly 100 is installed at the opening of the housing 200, one of the sealing door panel 130 and the fireproof door panel 120 is closer to the outside of the housing 200, and the other is closer to the inside of the housing 200. Specifically, when the fire door assembly 100 is installed on the energy storage device, the fire door panel 120 can be located near the inner side of the housing 200 and the sealing door panel 130 can be located near the outer side of the housing 200; or, the sealing door panel 130 can be located near the inner side of the housing 200 and the fire door panel 120 can be located near the outer side of the housing 200.

[0068] To achieve a sealed fit between the sealing door panel 130 and the door frame 110, a sealing strip can be provided between them. This sealing strip can be specifically sandwiched between the sealing door panel 130 and the inner wall of the mounting opening 111, or it can be located on the side of the sealing door panel 130 and the door frame 110 away from the fireproof door panel 120. Specifically, the sealing strip can be connected to either the sealing door panel 130 or the door frame 110, as long as it ensures that the sealing strip can be sandwiched between the sealing door panel 130 and the door frame 110 when the sealing door panel 130 is closed. Of course, the sealing door panel 130 itself can include a sealant layer with fireproof and waterproof properties, so that when the sealing door panel 130 is closed, it can seal against the door frame 110. It should be noted that the material of the sealant layer with certain fireproof and waterproof properties is well-known to those skilled in the art and will not be described in detail here.

[0069] This utility model's technical solution, by placing the battery device 300 inside the housing 200 and installing the fireproof door assembly 100 at the opening of the housing 200, allows the housing 200 and the fireproof door assembly 100 to jointly protect the battery device 300. It also reduces the risk of flames entering the housing 200 after an external fire and reduces the risk of flames escaping from the housing 200 after a fire inside the housing 200. By providing a fireproof door panel 120 and a sealing door panel 130 on the door frame 110, both the fireproof door panel 120 and the sealing door panel 130 are movably installed on the inner wall of the door frame 110. When the sealing door panel 130 is closed, it forms a sealing fit with the door frame 110, facilitating both sealing and opening the mounting opening 111 on the door frame 110, and achieving both sealing and fireproofing effects. By providing a groove 112 on the inner wall of the door frame 110, and having the edge of the fireproof door panel 120 inserted into the groove 112, the fireproof door panel 120, when in a state of sealing the installation opening 111 of the door frame 110, can block the gap between the sealing door panel 130 and the inner wall of the door frame 110, thereby improving the fireproof effect. On the other hand, by providing the groove 112, the channel formed by the gap between the fireproof door panel 120 and the groove 112 is a tortuous channel, which can further improve the fireproof effect.

[0070] Please refer to the reference. Figure 2 and Figure 3 In one embodiment of the present invention, the groove 112 includes a bottom wall 1122 and two opposing side walls 1121. The bottom wall 1122 connects the two side walls 1121 and is set at an angle to the side walls 1121.

[0071] Specifically, the two opposite sidewalls 1121 of the groove 112 refer to the sidewall 1121 closer to the sealing door panel 130 and the sidewall 1121 farther away from the sealing door panel 130. The sidewall 1121 can be a plane or a curved surface.

[0072] The bottom wall 1122 of the groove 112 refers to the wall surface opposite to the opening of the groove 112 facing the center of the door frame 110. The bottom wall 1122 of the groove 112 is used to connect two opposite side walls 1121. The bottom wall 1122 of the groove 112 can be a plane or a curved surface.

[0073] By including two opposing sidewalls 1121 and a bottom wall 1122 in the groove 112, with the bottom wall 1122 connecting the two opposing sidewalls 1121 and forming an angle with the sidewalls 1121, the groove 112 is U-shaped or similar to a U-shape. This causes the path of fire inside or outside the energy storage device of the fire door assembly 100 to bend at least twice when passing through the fire door panel 120. This forms a maze-like passage with a long and winding path, thus improving the fire protection effect.

[0074] Please refer to the reference. Figure 2 and Figure 3 In one embodiment of this utility model, a first gap 101 is provided between the fireproof door panel 120 and the groove wall of the groove 112.

[0075] By providing a first gap 101 between the fireproof door panel 120 and the groove wall of the groove 112, this gap facilitates the sliding of the fireproof door panel 120 within the groove 112, which is beneficial for the movement of the fireproof door panel 120 relative to the door frame 110. On the other hand, it can improve air permeability, allowing the smoke generated after a fire in the box 200 to leak out from here, or making this place a convenient air intake channel for introducing external gas into the box 200. Furthermore, by installing an exhaust device on the box 200, the gas inside the box 200 can be drawn away by the exhaust device, thereby reducing the air pressure inside the box 200.

[0076] Please refer to Figure 3 As shown, based on the scheme of providing a first gap 101 between the fireproof door panel 120 and the groove wall of the groove 112, further, in one embodiment of the present invention, the first gap 101 is defined as L1, 3mm≤L1≤5mm.

[0077] Specifically, the first gap 101 can be 3.0mm, 3.1mm, 3.2mm, 3.3mm, 3.4mm, 3.5mm, 3.6mm, 3.7mm, 3.8mm, 3.9mm, 4.0mm, 4.1mm, 4.2mm, 4.4mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, or 5.0mm.

[0078] By setting the first gap 101 to be no less than 3mm, on the one hand, it can ensure that the fire door panel 120 can slide flexibly in the groove 112; on the other hand, it can make the first gap 101 easy for gas to pass through, thereby facilitating the smooth discharge of smoke or gas in the energy storage device using the fire door assembly 100.

[0079] Based on the scheme of providing a first gap 101 between the fireproof door panel 120 and the groove wall of the groove 112, in a further embodiment of the present invention, a louver is movably provided on the sealing door panel 130.

[0080] By providing louvers on the sealing door panel 130, the louvers on the sealing door panel 130 can serve as an air inlet when opened, so that when an exhaust device is installed on the housing 200, an exhaust channel can be formed between it and the exhaust device; when the louvers on the sealing door panel 130 are closed, they can seal with the sealing door panel 130, thereby reducing the risk of water or other debris entering the housing 200.

[0081] Please refer to the reference. Figures 4 to 9 In one embodiment of this utility model, a locking part 140 is movably provided on the fireproof door panel 120, and a driving assembly 160 is also provided on the fireproof door panel 120. The driving assembly 160 is operatively connected to the locking part 140 and drives the locking part 140 to have a locked state and an unlocked state. A stop part 150 is provided on the door frame 110; when the locking part 140 is in the locked state, the locking part 140 and the stop part 150 stop each other; when the locking part 140 is in the unlocked state, the locking part 140 can disengage from the stop part 150.

[0082] The locking part 140 refers to the part that can lock the fireproof door panel 120 onto the door frame 110 to ensure the stability of the fireproof door panel 120. This facilitates the transportation of the energy storage device or ensures that the fireproof door panel 120 can stably seal the mounting opening 111 on the door frame 110 in the event of thermal runaway inside or outside the energy storage device's housing 200. The locking part 140 can be a bolt, hook, or other similar structure.

[0083] The stop portion 150 is used to limit the locking portion 140, thereby reducing the risk of the fire door being opened. When the locking portion 140 is a bolt, the stop portion 150 can be a stop ring for inserting the bolt and reducing the movement of the bolt in a direction perpendicular to its axial direction; or, when the locking portion 140 is a hook, the stop portion 150 is a stop post, thereby reducing the risk of the locking portion 140 and the fire door panel 120 moving and disengaging from the door frame 110; or, the stop portion 150 is a stop block, and the locking portion 140 is a bolt or spring that can extend out of or retract into the fire door panel 120. When the locking portion 140 extends out of the fire door panel 120 and the fire door has a tendency to open, the stop block is used to stop the locking portion 140, thereby achieving the effect of stopping the locking portion 140. The locking part 140 can be located at the bottom of the fire door panel 120, in which case the stop part 150 is located at the bottom of the door frame 110; or the locking part 140 can be located on the side of the fire door panel 120, and the stop part 150 is located on the side wall 1121 of the door frame 110.

[0084] The drive assembly 160 refers to the assembly that drives the locking part 140 to move, so that the locking part 140 has a locked state and an unlocked state. This drive assembly 160 can perform rotational motion, such as a gear assembly 162, a linkage assembly, or a motor, thereby driving the locking part 140 to rotate and thus having the locking part 140 in a locked or unlocked state. Alternatively, the drive assembly 160 can be an assembly that converts rotational motion into linear motion, such as a gear and rack assembly 163, a linkage and slider assembly, or a lead screw and nut assembly, thereby driving the locking part 140 to move so that it can extend out of the fire door body to stop the stop part 150 in the vertical direction; or driving the locking part 140 to move back into the fire door so that the stop part 150 no longer stops the vertical movement of the fire door body, thus achieving the unlocked state of the locking part 140. Alternatively, the drive assembly 160 includes a handle and an elastic element. The handle is slidably mounted on the fire door body. One end of the elastic element is connected to the fire door body, and the other end is connected to the locking part 140. The locking part 140 is also slidably mounted on the fire door body. The elastic extension and retraction direction of the elastic element is the same as the sliding direction of the locking part 140. When the user pulls the handle outward, the handle causes the elastic element and the locking part 140 to retract into the fire door body. When the user releases the handle, the locking part 140, under the action of the elastic element, extends at least partially out of the fire door body and can stop against the stop part 150. It should be noted that the drive assembly 160, locking part 140, and stop part 150 mentioned above are all common knowledge in the art and will not be described in detail here.

[0085] A locking part 140 is movably provided at the bottom of the fireproof door panel 120. The locking part 140 is connected to the drive assembly 160. A stop part 150 is provided at the bottom of the door frame 110. When the locking part 140 is in the locked state, it stops against the stop block. This allows the fireproof door panel 120 to block the mounting opening 111 on the door frame 110. The mutual stopping action of the locking part 140 and the stop part 150 improves the stability of the fireproof door panel 120, reducing the risk of fire from entering or leaving the energy storage device housing 200 through one side of the fireproof door panel 120. When the locking part 140 is in the unlocked state, it can disengage from the stop block, allowing the fireproof door to be opened without being stopped by the stop part 150, facilitating the installation of necessary equipment into the energy storage device.

[0086] Please refer to the reference. Figure 4 and Figure 5Based on the design of a fireproof door panel 120 having a drive assembly 160 and a locking part 140, and a stop part 150 on the door frame 110, specifically, in one example, the locking part 140 is a lock hook, the drive assembly 160 includes a lock cylinder 161, the lock cylinder 161 is connected to the lock hook in a transmission manner to drive the lock hook to rotate; when the lock hook rotates to the locked state, the lock hook is hooked onto the stop part 150; when the lock hook rotates to the unlocked state, the lock hook disengages from the stop part 150.

[0087] A lock hook refers to a component with a hook-like structure. A lock cylinder 161 refers to a component that is connected to the lock hook and located within the fire door body. The lock cylinder 161 can be a linkage shaft, or it may also include a gear assembly 162, etc. Taking the lock hook located at the bottom of the fire door body and the stop 150 located at the bottom of the door frame 110 as an example, when the lock cylinder 161 is a linkage shaft, its axial direction is perpendicular to the fire door body. During rotation, the linkage shaft can drive the lock hook to rotate clockwise or counterclockwise, allowing the lock hook to hook onto and disengage from the stop 150 when rotating clockwise or counterclockwise, respectively. The stop 150 can be a stop post or a stop limiting hole, etc. Specifically, to drive the lock cylinder 161 to rotate, one end of the lock cylinder 161 is connected to the lock hook, and the other end can extend outside the fire door panel 120 and is connected to a handle. The user can easily control the rotation of the lock cylinder 161 by rotating the handle.

[0088] By configuring the locking part 140 as a lock hook, and the drive assembly 160 including a lock cylinder 161, which is connected to the lock hook to drive the lock hook to rotate, the lock hook has a locked state (engaged with the stop part 150) and an unlocked state (disengaged from the stop part 150) when rotating clockwise and counterclockwise, respectively. This facilitates locking the fireproof door panel 120 onto the door frame 110 when the lock hook is engaged with the stop part 150, and opening the fireproof door panel 120 when the lock hook disengages from the stop part 150. Furthermore, this configuration simplifies the structure of the locking part 140 and the drive assembly 160 on the fireproof door panel 120.

[0089] Please refer to the reference. Figures 6 to 9 Based on the design of a drive assembly 160 and a locking part 140 on the fireproof door panel 120 and a stop part 150 on the door frame 110, specifically, in another example, the drive assembly 160 includes a gear assembly 162 and a rack 163. The gear assembly 162 is rotatably mounted on the fireproof door panel 120, the rack 163 meshes with the gear assembly 162, and the locking part 140 is connected to the rack 163 and slidably mounted on the fireproof door panel 120. When the locking part 140 is in the locked state, the rack 163 drives the locking part 140 to extend at least partially out of the fireproof door panel 120 and stop against the stop part 150. When the locking part 140 is in the unlocked state, the rack 163 drives the locking part 140 to retract into the fireproof door panel 120.

[0090] Taking an example where the locking part 140 is located at the bottom end of the fireproof door body and the stop part 150 is located at the bottom end of the door frame 110, the gear assembly 162 may include a driving gear and a driven gear. The axis of the driving gear is perpendicular to the fireproof door panel 120, and the driven gear meshes with the driving gear and is perpendicular to the axis of the driving gear. The rack 163 extends in a direction perpendicular to the fireproof door panel 120 and meshes with the driven gear. The driving gear and driven gear may be bevel gears, or they may be in the form of a worm gear. The axis of the worm is perpendicular to the fireproof door panel 120, and the axis of the worm gear is perpendicular to the axis of the worm and meshes with the rack 163. Taking an example where the locking part 140 is located on the side of the fireproof door panel 120 and the stop part 150 is located on the side of the door frame 110, the gear assembly 162 may also include only one gear. The axis of this gear is perpendicular to the fireproof door panel 120, and the rack 163 meshes with this gear and extends in a direction along the side of the door frame 110. In this embodiment, the locking part 140 can be a block-shaped, plate-shaped, or column-shaped body that can extend or retract into the door body, as long as the locking part 140 can stop the stop part 150 after extending out of the fireproof door panel 120. Further, such as... Figure 8 As shown, the side of the locking part 140 away from the stop part 150 can be configured as a guide slope. This guide slope allows the locking part 140 to slide relative to the stop part 150 during the process of moving with the fire door panel 120 to block the mounting opening 111 on the door frame 110. Thus, when the guide slope passes the stop part 150, the locking part 140 and the stop part 150 stop each other.

[0091] By including a gear assembly 162 and a rack 163 in the drive assembly 160, with the gear assembly 162 rotatably mounted on the fire door panel 120 and the rack 163 meshing with the gear and connected to the locking part 140, the user can drive the locking part 140 to move along the extension direction of the rack 163 after rotating the gear assembly 162. Furthermore, when the rack 163 drives the locking part 140 into the locked state, the locking part 140 at least partially extends out of the fire door panel 120 and blocks against the stop part 150, thereby achieving the effect of stably locking the fire door to the door frame 110. When the rack 163 drives the locking part 140 into the unlocked state, the locking part 140 retracts into the fire door panel 120, thus disengaging the locking part 140 from the blocking action of the stop part 150, thereby facilitating the opening of the fire door. Furthermore, by including a gear assembly 162 and a rack 163 in the drive assembly 160, the transmission effect of the drive assembly 160 to the locking part 140 is made smoother.

[0092] like Figure 6As shown, in some embodiments of the present invention, the fire door assembly 100 further includes a roller 170, which is rotatably connected to the top of the door frame 110. The top of the fire door panel 120 is connected to the roller 170 and can be wound around the roller 170 as the roller 170 rotates.

[0093] The 170 drum refers to a cylindrical structure that can rotate on its own.

[0094] By rotatably connecting the roller 170 to the top of the door frame 110, and connecting the top of the fireproof door panel 120 to the roller 170, the fireproof door panel 120 can be wound onto the roller 170 as it rotates, thus achieving the effect of opening and storing the fireproof door panel 120 on the roller 170. Furthermore, this arrangement ensures that the fireproof door panel 120 does not occupy the space of the mounting opening 111 on the door frame 110 when open, thereby facilitating the installation of larger equipment within the energy storage device's housing 200 through the door frame 110.

[0095] like Figure 10 As shown, in some embodiments of this utility model, the fireproof door panel 120 is provided with a plurality of spaced pressure strips 180, and the extending direction of the pressure strips 180 is the same as the axial direction of the roller 170.

[0096] The pressure strip 180 refers to the strip-shaped structure used to press the surface of the fireproof door panel 120. The pressure strip 180 can be made of metal or other fire-resistant materials.

[0097] By providing multiple spaced pressure strips 180 on the fireproof door panel 120, the risk of wrinkles appearing on the outer surface of the fireproof door panel 120 can be reduced, and the strength of the fireproof door panel 120 can also be improved. By aligning the extension direction of the pressure strips 180 with the axial direction of the roller 170, the risk of deformation of the pressure strips 180 can be reduced when the fireproof door body is wound onto the roller 170, thereby ensuring a stable pressing effect of the pressure strips 180 on the fireproof door panel 120.

[0098] like Figure 7 As shown, in some embodiments of this utility model, the bottom end of the fireproof door panel 120 is provided with a protective edging 190.

[0099] The protective edging 190 may cover only the bottom end face of the fire door, or it may cover at least a portion of the inner and outer surfaces of the fire door adjacent to the bottom end face. The protective edging 190 may be made of metal or rubber, etc.

[0100] By providing an edge banding at the bottom of the fireproof door panel 120, the risk of damage or burrs at the bottom is reduced, thus providing good reinforcement and protection for the bottom of the fireproof door panel 120.

[0101] like Figure 2 As shown, in some embodiments of this utility model, a second gap 102 is provided between the sealing door panel 130 and the fireproof door panel 120.

[0102] By providing a second gap 102 between the sealed door panel 130 and the fireproof door panel 120, an air insulation layer 132 is formed between the sealed door panel 130 and the fireproof door panel 120. Thus, when a fire breaks out on the side of the sealed door panel 130 away from the fireproof door panel 120, the second gap 102 can slow down the heat transfer from the sealed door panel 130 to the fireproof door panel 120, thereby reducing the temperature impact on the side of the fireproof door panel 120 away from the sealed door panel 130. Similarly, when a fire breaks out on the side of the fireproof door panel 120 away from the sealed door panel 130, the second gap 102 can slow down the heat transfer from the fireproof door panel 120 to the sealed door panel 130, thereby reducing the temperature impact on the side of the sealed door panel 130 away from the fireproof door panel 120.

[0103] like Figure 2 As shown, the second gap 102 is further defined as L2, where 30mm≤L2≤100mm.

[0104] The second gap 102 can be 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm or 100mm, etc.

[0105] This arrangement allows sufficient space between the sealing door panel 130 and the fireproof door panel 120 to slow down the temperature transfer rate between them, thereby reducing the temperature impact between them. In addition, it provides sufficient space for gas to flow, reducing the risk of the sealing door panel 130 blocking the airflow channel.

[0106] like Figure 2 As shown, in some embodiments of this utility model, the sealed door panel 130 includes a fireproof outer frame 131 and a thermal insulation layer 132. The fireproof outer frame 131 is movably connected to the door frame 110, and the thermal insulation layer 132 is embedded in the outer frame.

[0107] The fireproof outer frame 131 is a frame structure that supports the insulation layer 132. It can be made of metal to provide good support and fireproof performance, or it can be made of other high-temperature resistant plastic materials, etc.

[0108] The insulation layer 132 refers to the structure that can insulate the temperature on one side of the sealed door panel 130 to reduce the rapid conduction of temperature to the other side of the sealed door panel 130. The insulation layer 132 can be rock wool refractory material or aerogel insulation cotton, etc.

[0109] By including a fireproof outer frame 131 and a heat insulation layer 132 in the sealed door panel 130, with the fireproof outer frame 131 movably connected to the door frame 110 and the heat insulation layer 132 embedded in the outer frame, the sealed door panel 130 has both good fireproof effect and good heat insulation effect.

[0110] like Figure 2 As shown, in some embodiments of this utility model, the fireproof door panel 120 includes a heat insulation layer 121 and a fireproof layer 122 wrapped around the heat insulation layer 121.

[0111] The insulation layer 121 can be aerogel insulation cotton or rock wool refractory material. It is used to reduce the temperature transferred from one side of the fire door panel 120 to the other.

[0112] Fireproof layer 122 can be made of high-density fiberglass cloth or metal, etc.

[0113] By wrapping the fireproof layer 122 around the heat insulation layer 121, the fireproof door panel 120 has a good fireproof effect on the one hand, and on the other hand, it can also isolate the rate at which the temperature of the fireproof door panel 120 on the fire-facing side is transferred to its unfire-facing side.

[0114] like Figure 2 As shown, in some embodiments of this utility model, the sealing door panel 130 is hinged to the door frame 110.

[0115] When the sealed door panel 130 is hinged to the door frame 110, it can be hinged by a hinge or by a hinge hinge.

[0116] By hinged to the door frame 110, the opening area of ​​the sealing door 130 can be increased to open the mounting port 111 on the door frame 110, which makes it easier for users to install larger equipment into or remove it from the energy storage device housing 200 through the door frame 110.

[0117] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An energy storage device, characterized in that, The enclosure includes a housing, a battery unit, and a fire door assembly; the battery unit is housed within the housing; the housing has an opening on at least one side, and the fire door assembly is installed at the opening; the fire door assembly includes: A door frame, wherein the inner wall of the door frame is provided with a groove; A fireproof door panel, wherein the fireproof door panel is movably installed on the inner wall of the door frame, and the edge of the fireproof door panel is engaged in the groove; and A sealing door panel is movably connected to a door frame and is arranged side-by-side with the fireproof door panel along the thickness direction of the door frame; the sealing door panel has an open state and a closed state; when the sealing door panel is in the closed state, the sealing door panel and the door frame are sealed together.

2. The energy storage device as described in claim 1, characterized in that, The groove includes: bottom wall, and Two opposing sidewalls, the bottom wall connecting the two sidewalls and being set at an angle to the sidewalls.

3. The energy storage device as described in claim 2, characterized in that, A first gap is provided between the fireproof door panel and the groove wall of the groove.

4. The energy storage device as described in claim 3, characterized in that, The first gap is defined as L1, where 3mm ≤ L1 ≤ 5mm.

5. The energy storage device as described in claim 1, characterized in that, The fireproof door panel is movably provided with a locking part, and the fireproof door panel is also provided with a driving component. The driving component is pulsatorically connected to the locking part and drives the locking part to have a locked state and an unlocked state. The door frame is provided with a stop; when the locking part is in the locked state, the locking part and the stop stop mutually stop each other; when the locking part is in the unlocked state, the locking part can disengage from the stop stop.

6. The energy storage device as described in claim 5, characterized in that, The locking part is a lock hook, and the driving assembly includes a lock cylinder. The lock cylinder is connected to the lock hook in a transmission manner to drive the lock hook to rotate. When the lock hook rotates to the locked state, the lock hook is hooked onto the stop part. When the locking hook is rotated to the unlocked state, the locking hook disengages from the stop. Alternatively, the drive assembly includes a gear assembly and a rack, the gear assembly being rotatably mounted on the fireproof door panel, the rack meshing with the gear assembly, and the locking part being connected to the rack and slidably mounted on the fireproof door panel; when the locking part is in the locked state, the rack drives the locking part to extend at least partially out of the fireproof door panel and to stop against the stop part; when the locking part is in the unlocked state, the rack drives the locking part to retract into the fireproof door panel.

7. The energy storage device as described in claim 1, characterized in that, The fire door assembly also includes a roller, which is rotatably connected to the top of the door frame. The top of the fire door panel is connected to the roller and can be wound around the roller as it rotates.

8. The energy storage device as described in claim 7, characterized in that, The fireproof door panel is provided with a plurality of spaced pressure strips, the extension direction of which is the same as the axial direction of the roller; And / or, the bottom end of the fireproof door panel is provided with a protective edging.

9. The energy storage device as described in claim 1, characterized in that, A second gap is provided between the sealing door panel and the fireproof door panel.

10. The energy storage device as described in claim 9, characterized in that, The second gap is defined as L2, where 30mm ≤ L2 ≤ 100mm.

11. The energy storage device according to any one of claims 1 to 10, characterized in that, The sealed door panel includes a fireproof outer frame and a thermal insulation layer; the fireproof outer frame is movably connected to the door frame, and the thermal insulation layer is embedded in the outer frame. And / or, the fireproof door panel includes a heat insulation layer and a fireproof layer wrapped around the heat insulation layer; And / or, the sealing door panel is hinged to the door frame.

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