Energy storage cabinet and energy storage system

Abstract

The application relates to the technical field of energy storage systems, and provides an energy storage cabinet and an energy storage system. The energy storage cabinet of the application comprises a cabinet body, a cover plate and a connecting part. The cover plate is reversibly arranged on the top of the cabinet body through a hinge part, the connecting part is arranged between the cover plate and the cabinet body, the cover plate is constrained on the top of the cabinet body through the connecting part, the closing state of the cover plate is maintained, and the connecting part is disconnected along with the increase of the pressure in the cabinet body when thermal runaway occurs in the energy storage cabinet, so that the constraint of the cover plate is released. The energy storage cabinet of the application can improve the use quality of the energy storage cabinet.

Description

Technical Field

[0001] This application relates to the field of energy storage system technology, and in particular to an energy storage cabinet and an energy storage system. Background Technology

[0002] Energy storage systems typically consist of multiple energy storage cabinets or containers, each containing clusters of energy storage batteries. For fire safety, explosion vents are usually installed on the energy storage cabinets. These explosion vents are passive devices designed to prevent explosions. When the energy storage battery clusters inside the cabinet experience thermal runaway, they release a large amount of gas. If the internal gas pressure exceeds the preset explosion vent pressure of the explosion vent, the vent will open, releasing the pressure inside the cabinet and preventing an explosion.

[0003] Currently, explosion relief panels are typically mounted on the top cover of the energy storage cabinet, posing a risk of water leakage. Furthermore, in extreme weather conditions, such as icy or snowy weather, the panels may freeze to the cover, rendering them ineffective. When the panels are placed on the side of the energy storage cabinet, the ejected material upon opening poses a risk of injury, thus compromising the safety of the energy storage cabinet. In conclusion, the existing method of installing explosion relief panels is detrimental to improving the performance of energy storage cabinets. Utility Model Content

[0004] In view of this, this application aims to propose an energy storage cabinet to improve the quality of use of the energy storage cabinet.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: An energy storage cabinet includes: Cabinet; A cover plate is mounted on the cabinet via a hinged joint, allowing the cover plate to be flipped open and closed and positioned on the top of the cabinet. A connecting part is provided between the cover plate and the cabinet body, and the cover plate is constrained to the top of the cabinet body to keep the cover plate in a closed state; When thermal runaway occurs inside the energy storage cabinet, the connection part disconnects as the pressure inside the cabinet increases, thereby releasing the constraint of the cover plate.

[0006] Furthermore, the connecting part includes a connector connecting the cabinet body and the cover plate; when the pressure inside the cabinet body increases, the connector can be disconnected under the action of external force.

[0007] Furthermore, the connecting portion also includes a first connecting seat and a second connecting seat disposed on the cover plate; the connecting member is detachably assembled between the first connecting seat and the second connecting seat.

[0008] Furthermore, the cabinet body and / or the cover plate are provided with receiving grooves, and the connecting part is provided in the receiving grooves.

[0009] Furthermore, a baffle is provided on the opening of the receiving groove, and the baffle covers the connecting part in the receiving groove.

[0010] Furthermore, the cover plate is filled with a fireproof layer; and / or, the cover plate is provided with a plurality of lifting parts, each of the lifting parts being evenly arranged on the top of the cover plate.

[0011] Furthermore, the cover plate is provided with a first baffle plate; the first baffle plate extends outward from the edge of the cover plate, and the edge of the first baffle plate is provided with a first flange.

[0012] Furthermore, the cover plate is provided with a second shielding plate; the second shielding plate extends outward from the edge of the cover plate, and the edge of the second shielding plate is provided with a second flange; the projection area of ​​the second shielding plate along the height direction of the cover plate is inside the projection area of ​​the first shielding plate along the height direction of the cover plate.

[0013] Furthermore, a sealing layer is provided between the cover plate and the cabinet body.

[0014] Compared with related technologies, this application has the following advantages: (1) The energy storage cabinet described in this application has a hinged part that allows the cover plate to be flipped open and closed on the top of the cabinet. The connecting part keeps the cover plate closed on the cabinet, so that the cover plate remains closed during normal use of the energy storage cabinet. When the pressure increases due to thermal runaway in the energy storage cabinet, the connecting part can be disconnected to release the constraint of the cover plate, so that it can be opened by gas. This allows the cover plate to be opened when thermal runaway occurs in the energy storage cabinet, releasing the gas in the energy storage cabinet and reducing the risk of explosion. The cover plate is also set on the cabinet as an explosion relief plate, avoiding the risk of water leakage and improving the quality of use of the energy storage cabinet.

[0015] (2) The connection makes it easy to keep the cover closed at the top of the cabinet, and the connection can be disconnected when the pressure inside the cabinet increases, which makes it easy to ensure the passive explosion relief effect of the cover when the pressure inside the cabinet increases, which is conducive to design and implementation.

[0016] (3) The first and second connecting seats facilitate the installation of the connecting parts on the cabinet and the cover plate. The connecting parts can be detachably assembled on the first and second connecting seats, which makes it easy to open the cover plate during maintenance and repair, and facilitates the maintenance of the energy storage cabinet.

[0017] (4) By setting the receiving groove, the connecting part is placed in the receiving groove, which helps to protect the connecting part and avoid the connecting part from being broken due to external factors colliding with it, thus helping to ensure the use effect of the connecting part.

[0018] (5) The baffle provides better protection for the connection and helps to ensure the performance of the connection.

[0019] (6) By filling the inside of the cover plate with a fireproof layer, the fireproof effect of the cover plate is improved, which is conducive to design and implementation. At the same time, the multiple hoisting parts on the cover plate facilitate the hoisting of the energy storage cabinet, which is helpful for design and implementation.

[0020] (7) By setting the first baffle and the first flange, a structure similar to a rainproof edge is formed on the cover plate, which helps to prevent water leakage at the connection between the cover plate and the cabinet and facilitates the design implementation.

[0021] (8) By setting the second baffle and the second flange, and the projection area of ​​the second baffle along the height direction of the cover plate is inside the projection area of ​​the first baffle along the height direction of the cover plate, a multi-layer protective structure is formed at the connection between the cover plate and the cabinet, which further improves the protective effect at the connection between the cover plate and the cabinet, effectively avoids water leakage at the connection between the cover plate and the cabinet, and facilitates design implementation.

[0022] (9) By setting the sealing layer, when the cover plate is placed on the top of the cabinet, a seal is formed between the cover plate and the cabinet, which improves the sealing effect between the cover plate and the cabinet and further avoids water leakage at the connection between the cover plate and the cabinet.

[0023] This application also proposes an energy storage system, which includes the energy storage cabinet described above.

[0024] The energy storage system described in this application and the energy storage cabinet described above have the same beneficial effects as the prior art, so they will not be described again here. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is an exploded view of part of the structure of the energy storage cabinet described in this embodiment; Figure 2 This is a bottom view of the cover plate of the energy storage cabinet described in the embodiments of this application; Figure 3 This is a partial cross-sectional view of the energy storage cabinet described in this embodiment; Figure 4 for Figure 3 Enlarged view of point A; Figure 5This is a partial structural diagram of the energy storage cabinet from a first angle as described in this embodiment; Figure 6 This is a partial structural diagram of the energy storage cabinet from a second angle as described in this embodiment; Figure 7 for Figure 6 Enlarged view of point B in the image; Explanation of reference numerals in the attached figures: 1. Cabinet; 2. Cover plate; 201. First shielding plate; 202. First flange; 203. Second shielding plate; 204. Second flange; 3. Hinge joint; 4. Connecting parts; 401. Connector; 402. First connector; 403. Second connector; 5. Receiving groove; 6. Baffle; 7. Lifting part; 8. Sealing layer. Detailed Implementation

[0026] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0028] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0030] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0032] An embodiment of the first aspect of this application provides an energy storage cabinet, which is applied in an energy storage system and is mainly used to store and release electrical energy. The energy storage cabinet of this embodiment, with its innovative structural design, can improve the success rate of passive explosion relief and reduce the risk of injury from passive explosion relief when thermal runaway occurs, thereby improving the quality of use of the energy storage cabinet.

[0033] In related technologies, energy storage systems are used in industrial and commercial environments and are often referred to as industrial and commercial energy storage systems. These systems are designed for the storage and release of electrical energy for industrial and commercial users. Because these systems operate in environments where human activity is present, their safety requirements are relatively high.

[0034] Among these safety issues, fire safety is a particularly important one. Industrial and commercial energy storage systems typically have corresponding fire suppression systems installed on the energy storage cabinets to suppress thermal runaway within the cabinets. However, when the fire suppression system is unable to suppress thermal runaway within the cabinets, it is necessary to promptly vent the gas inside the cabinets to reduce the pressure and prevent an explosion.

[0035] Therefore, related technologies often incorporate explosion venting plates on energy storage cabinets. By setting a preset explosion venting pressure, the plate is activated when this pressure is reached, releasing gas from the cabinet and reducing internal pressure, thus achieving passive explosion venting. Explosion venting plates are typically located on the top cover of the energy storage cabinet. However, in severe weather conditions such as rain or snow, this poses a risk of water leakage from the top of the cabinet. Furthermore, at low temperatures, the plates may freeze to the top cover, compromising their effectiveness. While placing the explosion venting plates on the sides avoids leakage and freezing issues, in industrial and commercial environments with surrounding personnel, passive explosion venting on the side could cause substances generated by thermal runaway to spray out, posing a risk of injury and negatively impacting the overall performance of the energy storage cabinet.

[0036] In view of this, in order to overcome the shortcomings of related technologies, the energy storage cabinet in this embodiment combines... Figures 1 to 7 As shown, the overall design includes a cabinet 1 and a cover plate 2.

[0037] The cover plate 2 is hinged and flipped on top of the cabinet 1 via a hinge 3. A connecting part 4 is provided between the cabinet 1 and the cover plate 2, which constrains the cover plate 2 to the top of the cabinet 1 to keep the cover plate 2 in a closed state. In the event of thermal runaway in the energy storage cabinet, the connecting part 4 will disconnect as the pressure inside the cabinet 1 increases, thereby releasing the constraint of the cover plate 2.

[0038] Therefore, by setting the hinge part 3, the cover plate 2 can be flipped open and closed and is located on the top of the cabinet 1. The connection part 4 keeps the cover plate 2 closed on the cabinet 1. This allows the cover plate 2 to remain closed during normal use of the energy storage cabinet. When the pressure increases due to thermal runaway in the energy storage cabinet, the connection part 4 can be disconnected, releasing the constraint of the cover plate 2. This allows it to be opened by gas, enabling the cover plate 2 to open in the event of thermal runaway in the energy storage cabinet, releasing the gas inside the energy storage cabinet, reducing the risk of explosion. Furthermore, by setting the cover plate 2 as a whole on the cabinet 1 as a venting plate, the risk of water leakage is avoided, which helps to improve the quality of use of the energy storage cabinet.

[0039] Based on the above general introduction, specifically, as an exemplary implementation, the cabinet 1 in this embodiment generally has a base at its bottom.

[0040] The cabinet 1 described above serves as the main structure of the entire energy storage cabinet, used to house the energy storage battery clusters and related supporting structures. In specific implementations, the arrangement of the energy storage battery clusters and related supporting structures within the cabinet 1 can refer to the conventional arrangement in existing energy storage cabinets (such as stacking), and will not be elaborated further here.

[0041] The base described above serves as the mounting foundation for cabinet 1 and is generally located at the bottom of cabinet 1. To facilitate moving cabinet 1 to the installation position, the base is equipped with forklift holes for inserting forklift forks. The connection method between the base and cabinet 1, as well as the arrangement of the forklift holes, can refer to the conventional connection methods (such as welding) and arrangement methods (such as through holes) in existing energy storage cabinets, and will not be elaborated further here.

[0042] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, include a connector 401 connecting the cabinet 1 and the cover plate 2, and the connector 401 may be disconnected under external force when the pressure inside the cabinet 1 increases.

[0043] It is worth mentioning that the connector 401 is located between the cabinet 1 and the cover plate 2, with both ends of the connector 401 connected to the cabinet 1 and the cover plate 2 respectively. The connector 401 facilitates keeping the cover plate 2 closed at the top of the cabinet 1, and it can disconnect when the pressure inside the cabinet 1 increases, ensuring the passive pressure relief effect of the cover plate 2 when the pressure inside the cabinet 1 increases, thus facilitating design and implementation.

[0044] Understandably, when thermal runaway occurs inside the energy storage cabinet, gas is generated due to thermal runaway, causing the temperature inside the energy storage cabinet to rise, which in turn increases the pressure inside the energy storage cabinet. Under the pressure inside the energy storage cabinet, the cover plate 2 is subjected to an outward pushing force, which in turn generates a tension force on the connector 401. When the tension force borne by the connector 401 reaches the preset disconnection tension value, the connector 401 disconnects, thereby releasing the constraint of the cover plate 2. This allows the cover plate 2 to be flipped over at the top of the cabinet 1 through the hinge part 3, thereby guiding the gas inside the energy storage cabinet to the outside and reducing the pressure inside the energy storage cabinet.

[0045] It should be noted that the breaking pull value of connector 401 can be calculated based on the self-weight of cover plate 2 and the preset explosion relief pressure value. The value obtained by subtracting the self-weight of cover plate 2 from the preset explosion relief pressure value is the breaking pull value of connector 401.

[0046] Regarding the cover plate 2 in this embodiment, it is flipped onto the cabinet 1 via the hinge part 3. The hinge part 3 can be, for example, a hinge. Of course, in addition to making the hinge part 3 a hinge, other hinge structures in the prior art (such as hinges) are also acceptable, as long as they can enable the cover plate 2 to flip on the cabinet 1. This will not be elaborated further here.

[0047] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, include a first connector 402 and a second connector 403 in the connecting portion 4.

[0048] The first connecting seat 402 and the second connecting seat 403 are respectively fixedly installed on the cabinet 1 and the cover plate 2. The connector 401 is detachably assembled between the first connecting seat 402 and the second connecting seat 403 so that when the cover plate 2 needs to be opened, the connector 401 can be disassembled without damaging it.

[0049] It is understandable that the first connecting seat 402 and the second connecting seat 403 facilitate the installation of the connector 401 on the cabinet 1 and the cover plate 2. The connector 401 is detachably assembled on the first connecting seat 402 and the second connecting seat 403, which facilitates the opening of the cover plate 2 during inspection and maintenance, and is beneficial to the inspection and maintenance of the energy storage cabinet.

[0050] In practical implementation, threaded holes can be correspondingly provided on connector 401, first connecting seat 402, and second connecting seat 403. During installation, the threaded holes on connector 401 are aligned with the first connecting seat 402 and second connecting seat 403, respectively, and connector 401 is assembled onto the first connecting seat 402 and second connecting seat 403 using bolts. Of course, in addition to bolt connection, other detachable connection methods (such as riveting) in related technologies can be used for the detachable connection of connector 401, which will not be described in detail here.

[0051] Furthermore, in practical implementation, the connector 401 can be provided in various specifications, including specifications that facilitate disconnection according to the explosion pressure value, and reinforced specifications that facilitate transportation. The reinforced specifications that facilitate transportation can be made of materials that are not easy to disconnect (such as steel), so that they can be used when the cover needs to be pre-installed on the cabinet 1 and moved by hoisting. After hoisting to the installation position, they can simply be replaced with the specifications that facilitate disconnection according to the explosion pressure value.

[0052] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, provide a receiving groove 5 on the cabinet 1 and place the connecting part 4 in the receiving groove 5.

[0053] It is understandable that the above-mentioned receiving groove 5 is designed to house the connecting part 4 within the receiving groove 5, which helps to protect the connecting part 4 and prevent external factors from colliding with the connecting part 4, thus preventing the connecting part 4 from breaking off and ensuring the effectiveness of the connecting part 4.

[0054] In practical implementation, the receiving groove 5 is formed on the cabinet 1, and the connecting part 4 is located inside the receiving groove 5. The receiving groove 5 shields both sides of the connecting part 4, which helps to protect the connecting part 4 and prevent damage. Of course, in addition to setting the receiving groove 5 on the cabinet 1, it can also be set on the cover plate 2, or the receiving groove 5 can be composed of two parts, one on the cover plate 2 and the other on the cabinet 1, as long as it can accommodate the connecting part 4 inside the receiving groove 5.

[0055] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, provide a baffle 6 on the opening of the receiving groove 5, the baffle 6 covering the connecting part 4 in the receiving groove 5.

[0056] Understandably, the baffle 6 provides better protection for the connecting part 4, which helps to ensure the effectiveness of the connecting part 4.

[0057] In practical implementation, bolt holes can be provided in the receiving groove 5, and bolt holes are also provided on the baffle 6 at positions corresponding to the bolt holes in the receiving groove 5. The baffle 6 is then assembled onto the receiving groove 5 using bolts. This allows the connecting part 4 to be covered inside the receiving groove 5, thereby facilitating the protection of the connecting part 4 during use.

[0058] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, have a fire-resistant layer filled inside the cover plate 2.

[0059] In practical implementation, the cover plate 2 can be square, for example, with an internal cavity filled with a fireproof layer. This fireproof layer can be made of fireproof rock wool, or other existing fireproof materials can also be used as fillers in the cover plate 2; these will not be elaborated further here. It is understandable that filling the inside of the cover plate 2 with a fireproof layer improves its fire resistance and facilitates design and implementation.

[0060] Meanwhile, to facilitate the hoisting and installation of the cover plate 2, the top of the cover plate 2 is provided with multiple hoisting parts 7, which are evenly distributed on the cover plate 2. In specific implementation, the hoisting parts 7 can be, for example, hoisting bolts, with each hoisting bolt arranged at one of the four corners of the cover plate 2 to balance the hoisting tension and facilitate the hoisting and installation of the cover plate 2.

[0061] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, provide a first baffle 201 on the cover plate 2.

[0062] The first baffle 201 extends outward from the edge of the cover plate 2, and the edge of the first baffle 201 is provided with a first flange 202. It can be understood that by setting the first baffle 201 and the first flange 202, a structure similar to a rainproof edge is formed on the cover plate 2, which helps to prevent water leakage at the connection between the cover plate 2 and the cabinet 1, and facilitates the design implementation.

[0063] In practical implementation, the first shielding plate 201 extends outward along the three edges of the cover plate 2 where the hinge portion 3 is not provided, and each edge of the first shielding plate 201 is provided with a first flange 202, and the intersections of the first flanges 202 are connected as one unit. The first shielding plate 201 and the first flange 202 at corresponding positions are set perpendicularly to facilitate the guidance of rainwater and improve the setting effect of the first shielding plate 201.

[0064] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, provide a second shielding plate 203 on the cover plate 2.

[0065] The second shield 203 extends outward from the edge of the cover plate 2, and the edge of the second shield 203 is provided with a second flange 204. The projection area of ​​the second shield 203 along the height direction of the cover plate 2 is inside the projection area of ​​the first shield 201 along the height direction of the cover plate 2.

[0066] It is understandable that by setting the second shield 203 and the second flange 204, and with the projection area of ​​the second shield 203 along the height direction of the cover plate 2 inside the projection area of ​​the first shield 201 along the height direction of the cover plate 2, a multi-layer protective structure is formed at the connection between the cover plate 2 and the cabinet 1, which further enhances the protective effect at the connection between the cover plate 2 and the cabinet 1, effectively preventing water leakage at the connection between the cover plate 2 and the cabinet 1, and facilitating design implementation.

[0067] In specific implementation, the first shielding plate 201 and the second shielding plate 203 are staggered in the height direction of the cover plate 2. The first shielding plate 201 is arranged on the top of the cover plate 2 and extends outward from the top edge of the cover plate 2. The second shielding plate 203 is arranged at the bottom of the cover plate 2 and extends outward from the bottom edge of the cover plate 2.

[0068] Continue to combine Figures 1 to 7 As shown, in some exemplary embodiments, this embodiment may, for example, provide a sealing layer 8 between the cover 2 and the cabinet 1.

[0069] Understandably, by setting the sealing layer 8, when the cover plate 2 is placed on top of the cabinet 1, a seal is formed between the cover plate 2 and the cabinet 1, which improves the sealing effect between the cover plate 2 and the cabinet 1 and further avoids water leakage at the connection between the cover plate 2 and the cabinet 1.

[0070] In practical implementation, the sealing layer 8 can be provided at the bottom of the cover plate 2, for example. When the cover plate 2 is provided on the cabinet 1, the sealing layer 8 can form a seal between the cover plate 2 and the cabinet 1. The sealing layer 8 can be made of sealing foam, for example. Of course, other sealing structures in the prior art (such as sealing strips) can also be used, as long as they can form a seal between the cabinet 1 and the cover plate 2.

[0071] It is worth noting that, regarding the energy storage cabinet in this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it is still composed of... Figures 1 to 7 As shown, it may include, for example, a cabinet 1 and a cover 2.

[0072] The cover plate 2 is flipped onto the cabinet 1 via the hinge part 3. The cover plate 2 and the cabinet 1 are connected by a connecting part 4. The top of the cover plate 2 is provided with a first shielding plate 201, which extends outward from the top edge of the cover plate 2 and has a first flange 202 on its edge. The bottom of the cover plate 2 is provided with a second shielding plate 203, which extends outward from the bottom of the cover plate 2 and has a second flange 204 on its edge. When viewed along the height direction of the cover plate 2, the projection area of ​​the second shielding plate 203 is inside the projection area of ​​the first shielding plate 201.

[0073] The cover plate 2 has a sealing layer 8 at its bottom. When the cover plate 2 is placed on the cabinet 1, the sealing layer 8 forms a seal between the cover plate 2 and the cabinet 1. The cover plate 2 is filled with a fireproof layer, and the top of the cover plate 2 is provided with a lifting part 7, which is respectively located at the four corners of the top.

[0074] The cabinet 1 has a receiving groove 5, and a connecting part 4 is located within the receiving groove 5. A baffle 6 is provided on the opening of the receiving groove 5. The connecting part 4 includes a first connecting seat 402 on the cover plate 2, a second connecting seat 403 on the cabinet 1, and a connecting piece 401 bolted to the first connecting seat 402 and the second connecting seat 403. In the event of thermal runaway of the energy storage cabinet, as the pressure inside the energy storage cabinet increases, the connecting piece 401 can be disconnected under external force.

[0075] In the above preferred embodiments, the specific settings and arrangements of the cover plate 2, cabinet 1, and connecting part 4 can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the cover plate 2, cabinet 1, and connecting part 4 can also be referred to the descriptions in the above exemplary embodiments.

[0076] The energy storage cabinet in this embodiment adopts the above design. The cover plate 2 is hinged and flipped onto the cabinet body 1 via the hinge part 3. The cover plate 2 is constrained to the closed state by the connecting part 4, allowing the constraint to be released when the pressure inside the energy storage cabinet increases. This facilitates the use of the cover plate 2 as a pressure relief plate, enabling passively triggered pressure relief. Furthermore, by using the cover plate 2 as a pressure relief plate on the cabinet body 1, the risk of water leakage is avoided, thus improving the usability of the energy storage cabinet.

[0077] An embodiment of the second aspect of this application provides an energy storage system that includes an energy storage cabinet as described above.

[0078] In the energy storage system of this embodiment, the aforementioned energy storage cabinet serves as an independent energy storage unit within the system. It typically comprises multiple energy storage cabinets arranged within a defined area. These cabinets are electrically connected as a single unit via relevant structures to form the energy storage system.

[0079] In this embodiment, the energy storage system uses the energy storage cabinet as described above, with the cover plate 2 serving as a venting plate. The hinge part 3 and the connecting part 4 ensure passively triggered venting action. Furthermore, by using the cover plate 2 as a venting plate on the cabinet body 1, the risk of water leakage is avoided, which improves the quality of use of the energy storage cabinet and reduces the risk of injury during energy storage cabinet venting, thus enhancing the safety of the energy storage system.

[0080] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. An energy storage cabinet, characterized in that, include: Cabinet; A cover plate is mounted on the cabinet via a hinged joint, allowing the cover plate to be flipped open and closed and positioned on the top of the cabinet. A connecting part is provided between the cover plate and the cabinet body, and the cover plate is constrained to the top of the cabinet body to keep the cover plate in a closed state; When thermal runaway occurs inside the energy storage cabinet, the connection part disconnects as the pressure inside the cabinet increases, thereby releasing the constraint of the cover plate.

2. The energy storage cabinet according to claim 1, characterized in that: The connecting part includes a connector that connects the cabinet body and the cover plate; When the pressure inside the cabinet increases, the connector can be disconnected under the action of external force.

3. The energy storage cabinet according to claim 2, characterized in that: The connecting portion further includes a first connecting seat and a second connecting seat disposed on the cover plate; The connector is detachably assembled between the first connector and the second connector.

4. The energy storage cabinet according to claim 1, characterized in that: The cabinet body and / or the cover plate are provided with receiving grooves, and the connecting part is provided in the receiving grooves.

5. The energy storage cabinet according to claim 4, characterized in that: A baffle is provided on the opening of the receiving groove, and the baffle covers the connecting part in the receiving groove.

6. The energy storage cabinet according to claim 1, characterized in that: The cover plate is internally filled with a fireproof layer; and / or, The cover plate is provided with multiple lifting parts, and each lifting part is evenly arranged on the top of the cover plate.

7. The energy storage cabinet according to any one of claims 1-6, characterized in that: The cover plate is provided with a first baffle plate; The first shielding plate extends outward from the edge of the cover plate, and the edge of the first shielding plate is provided with a first flange.

8. The energy storage cabinet according to claim 7, characterized in that: The cover plate is provided with a second baffle plate; The second shielding plate extends outward from the edge of the cover plate, and the edge of the second shielding plate is provided with a second flange; The projection area of ​​the second shield along the height direction of the cover plate is inside the projection area of ​​the first shield along the height direction of the cover plate.

9. The energy storage cabinet according to claim 7, characterized in that: A sealing layer is provided between the cover plate and the cabinet body.

10. An energy storage system, characterized in that: The energy storage system includes the energy storage cabinet as described in any one of claims 1-9.

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