Door body assembly for battery cabinet and energy storage battery cabinet

Abstract

This invention provides a door assembly for a battery cabinet and an energy storage battery cabinet. The door assembly for the battery cabinet includes: a door body; a top and bottom locking mechanism disposed on the door body, the top and bottom locking mechanism including a drive mechanism and two connecting rods, one connecting rod being located above and driven by the drive mechanism, and the other connecting rod being located below and driven by the drive mechanism, so as to drive the two connecting rods to move toward or away from each other through the drive mechanism; at least one connecting rod having a contact portion at its end away from the drive mechanism; a first limiting portion disposed on the door body for limiting and stopping the contact portion; a pressure detection device disposed between the first limiting portion and the contact portion; and a control module electrically connected to the pressure detection device; if the pressure detection value of the pressure detection device exceeds a preset range value, it is determined that the connecting rod has deformed. This invention effectively solves the problem in the prior art that workers cannot know whether the door lock rod has bent or deformed.

Description

Technical Field

[0001] This invention relates to the field of battery cabinet technology, and more specifically, to a door assembly for a battery cabinet and an energy storage battery cabinet. Background Technology

[0002] Currently, energy storage battery cabinets are devices used to store electrical energy, mainly composed of multiple battery cells, a battery management system (BMS), a thermal management system, electrical interfaces, safety protection devices, and a casing. They are an important component of modern energy storage systems and are widely used in various scenarios such as renewable energy generation, grid peak shaving and frequency regulation, user-side energy storage, microgrids, and electric vehicle charging stations.

[0003] In existing technologies, due to the significant weight of energy storage battery cabinets, the door lock rods are prone to bending and deformation during or after handling. However, in actual use, staff cannot accurately determine whether the door lock rods have deformed or twisted, increasing the difficulty of cabinet door maintenance. Summary of the Invention

[0004] The main objective of this invention is to provide a door assembly for a battery cabinet and an energy storage battery cabinet, so as to solve the problem in the prior art that workers cannot know whether the door lock rod has been bent or deformed.

[0005] To achieve the above objectives, according to one aspect of the present invention, a door assembly for a battery cabinet is provided, comprising: a door body; a top and bottom lock mechanism disposed on the door body, the top and bottom lock mechanism including a drive mechanism and two connecting rods, one connecting rod being located above the drive mechanism and drivenly connected to the drive mechanism, and the other connecting rod being located below the drive mechanism and drivenly connected to the drive mechanism, so as to drive the two connecting rods to move toward or away from each other by the drive mechanism, thereby realizing the unlocking and locking of the top and bottom lock mechanism; at least one connecting rod having a contact portion at its end away from the drive mechanism; a first limiting portion disposed on the door body for limiting and stopping the contact portion; a pressure detection device disposed between the first limiting portion and the contact portion; and a control module electrically connected to the pressure detection device; wherein, if the pressure detection value of the pressure detection device exceeds a preset range value, it is determined that the connecting rod with the contact portion is deformed.

[0006] Furthermore, each link includes: a first plate and a second plate disposed opposite to each other; a third plate, the first plate being connected to the second plate through the third plate, the first plate and the third plate being disposed at a first angle, and the second plate and the third plate being disposed at a second angle; wherein the first plate and the second plate are located on the same side of the third plate.

[0007] Furthermore, there are two contact parts, and the two contact parts are arranged one-to-one with the two connecting rods. Each contact part includes: a mounting bracket, the first side of which is arranged on the end of the connecting rod; and a rolling element, which is rotatably arranged on the second side of the mounting bracket. The second side of the mounting bracket is suspended to form an installation space between the rolling element and the door body.

[0008] Further, the first limiting part includes: a first limiting plate, at least a portion of which is located within the installation space; a second limiting plate, which is connected to the first limiting plate on the side located within the installation space and near the connecting rod, the second limiting plate and the first limiting plate being arranged at a third included angle; wherein, along the direction from the first limiting plate to the connecting rod, the distance between the second limiting plate and the rotation axis of the rolling element gradually increases; a pressure detection device is disposed on the first limiting plate and / or the second limiting plate.

[0009] Furthermore, the pressure detection device is a pressure sensing strip; and / or, the door assembly for the battery cabinet also includes an alarm module electrically connected to the control module, which issues an alarm signal if the pressure detection value of the pressure detection device exceeds a preset range value; and / or, the locking mechanism has a self-locking module, which controls the activation of the self-locking module if the pressure detection value of the pressure detection device exceeds a preset range value.

[0010] Furthermore, the battery cabinet door assembly also includes: a displacement sensor, which is mounted on the door and electrically connected to the control module for detecting the real-time position of the door; wherein, when the displacement sensor detects that the door is stationary, the control module controls the pressure detection value of the pressure detection device; if the pressure detection value of the pressure detection device exceeds a preset range value and is greater than or equal to a preset threshold value, it is determined that at least a portion of the connecting rod with the contact part protrudes toward the side away from the door; if the pressure detection value of the pressure detection device exceeds a preset range value and is less than a preset threshold value, it is determined that at least a portion of the connecting rod with the contact part protrudes toward the door.

[0011] Furthermore, the connecting rod has a first mating part, and the top and bottom lock mechanism also includes a second limiting part, which is disposed on the door body. The second limiting part includes a sleeve and a second mating part disposed on the sleeve. The sleeve is sleeved outside the connecting rod. One of the first mating part and the second mating part is a protrusion, and the other of the first mating part and the second mating part is a recess. The protrusion extends into the recess and can slide along the extension direction of the recess.

[0012] Furthermore, the first mating part is disposed on the third plate; and / or, there is one first mating part and one second limiting part; or, there are multiple first mating parts, which are spaced apart along the extension direction of the connecting rod, and multiple second limiting parts, which are disposed in one-to-one correspondence with the multiple first mating parts.

[0013] Furthermore, the door assembly for the battery cabinet also includes a latch disposed on the first plate or the second plate, the latch comprising: a connecting plate connected to the first plate or the second plate; and a hook-shaped portion disposed on the connecting plate and protruding from the third plate.

[0014] According to another aspect of the present invention, an energy storage battery cabinet is provided, including the aforementioned battery cabinet door assembly.

[0015] According to the technical solution of this invention, the door assembly for a battery cabinet includes a door body, a top and bottom locking mechanism, a first limiting part, a pressure detection device, and a control module. The top and bottom locking mechanism is disposed on the door body and includes a drive mechanism and two connecting rods. One connecting rod is located above the drive mechanism and is driven and connected to it, while the other connecting rod is located below the drive mechanism and is also driven and connected to it. The drive mechanism drives the two connecting rods to move toward or away from each other, thereby unlocking and locking the top and bottom locking mechanism. At least one connecting rod has a contact part at its end away from the drive mechanism. The first limiting part is disposed on the door body to limit and stop the contact part. The pressure detection device is disposed between the first limiting part and the contact part. The control module is electrically connected to the pressure detection device. In this way, if the pressure detection value of the pressure detection device exceeds the preset range during or after the battery cabinet is moved by the staff, it is determined that the connecting rod with the contact part has been deformed. This allows the staff to detect the deformation of the connecting rod in real time. If the connecting rod is deformed, the staff can take corresponding strategies to open or close the door, thus solving the problem in the prior art that the staff cannot know whether the door lock rod has been bent or deformed. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A perspective structural schematic diagram of an embodiment of a door assembly for a battery cabinet according to the present invention is shown;

[0018] Figure 2 It shows Figure 1 Enlarged schematic diagram of point A of the door assembly of the battery cabinet in the diagram;

[0019] Figure 3 It shows Figure 1 Enlarged schematic diagram of point B of the door assembly of the battery cabinet in the diagram;

[0020] Figure 4 It shows Figure 1 The front view of the battery cabinet door assembly;

[0021] Figure 5 It shows Figure 4 A magnified schematic diagram of point C of the door assembly of the battery cabinet.

[0022] The above figures include the following reference numerals:

[0023] 10. Door body; 20. Top and bottom lock mechanism; 21. Connecting rod; 211. First plate; 212. Second plate; 213. Third plate; 214. First mating part; 22. Second limiting part; 221. Sleeve; 222. Second mating part; 30. First limiting part; 31. First limiting plate; 32. Second limiting plate; 33. Transition connecting plate; 40. Pressure detection device; 50. Contact part; 51. Mounting bracket; 52. Rolling element; 53. Installation space; 60. Lock; 61. Connecting plate; 62. Hook-shaped part. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0026] In this invention, unless otherwise stated, directional terms such as "up" and "down" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0027] To address the problem in existing technologies where workers cannot determine whether a door lock rod has bent or deformed, this application provides a door assembly for a battery cabinet and an energy storage battery cabinet.

[0028] like Figures 1 to 5As shown, the battery cabinet door assembly includes a door body 10, a top and bottom locking mechanism 20, a first limiting part 30, a pressure detection device 40, and a control module. The top and bottom locking mechanism 20 is mounted on the door body 10 and includes a drive mechanism and two connecting rods 21. One connecting rod 21 is located above and driven by the drive mechanism, and the other connecting rod 21 is located below and driven by the drive mechanism. The drive mechanism drives the two connecting rods 21 to move towards or away from each other, thereby unlocking and locking the top and bottom locking mechanism 20. At least one connecting rod 21 has a contact part 50 at its end away from the drive mechanism. The first limiting part 30 is mounted on the door body 10 to limit and stop the contact part 50. The pressure detection device 40 is located between the first limiting part 30 and the contact part 50. The control module is electrically connected to the pressure detection device 40. If the pressure detection value of the pressure detection device 40 exceeds a preset range, it is determined that the connecting rod 21 with the contact part 50 has deformed.

[0029] By applying the technical solution of this embodiment, if the pressure detection value of the pressure detection device 40 exceeds the preset range value during or after the staff moves the battery cabinet, it is determined that the connecting rod 21 with the contact part 50 has deformed, so that the staff can detect the deformation of the connecting rod 21 in real time. If the connecting rod 21 is deformed, the staff can take corresponding strategies to open or close the door 10, thereby solving the problem in the prior art that the staff cannot know whether the door lock rod has bent or deformed.

[0030] In this embodiment, each link 21 is provided with a contact portion 50 at the end away from the drive mechanism to monitor the deformation of the two links 21 in real time.

[0031] like Figure 3 As shown, each connecting rod 21 includes a first plate 211, a second plate 212, and a third plate 213 arranged opposite to each other. The first plate 211 is connected to the second plate 212 via the third plate 213, with the first plate 211 and the third plate 213 forming a first angle, and the second plate 212 and the third plate 213 forming a second angle. The first plate 211 and the second plate 212 are located on the same side of the third plate 213. This design not only enhances the structural strength of the connecting rod 21 to resist external forces and reduces deformation caused by impacts, thereby improving safety, but also facilitates the assembly and maintenance of the top and bottom locking mechanism, making it suitable for battery cabinet doors that are frequently opened and closed.

[0032] In this embodiment, the first plate 211 and the second plate 212 are arranged parallel to each other, with the first included angle and the second included angle both being 90°, so that the connecting rod 21 has a U-shaped structure, thereby improving the structural strength of the connecting rod 21 and preventing deformation during transportation that would affect the normal use of the battery cabinet.

[0033] Optionally, the first plate 211, the second plate 212, and the third plate 213 are integrally formed structures.

[0034] like Figure 2 As shown, there are two contact portions 50, each corresponding to one of the two connecting rods 21. Each contact portion 50 includes a mounting bracket 51 and a rolling element 52. The first side of the mounting bracket 51 is located on the end of the connecting rod 21. The rolling element 52 is rotatably mounted on the second side of the mounting bracket 51. The second side of the mounting bracket 51 is suspended, so that a mounting space 53 is formed between the rolling element 52 and the door body 10. In this way, the contact between the rolling element 52 and the first limiting part 30 can reduce the friction between them, reduce the structural wear of the contact portion 50 and the first limiting part 30, and thus extend the service life of the door assembly. At the same time, the rotation of the rolling element 52 can adapt to the small displacement of the first limiting part 30, ensuring the limiting reliability of the first limiting part 30.

[0035] In this embodiment, the mounting bracket 51 includes two fourth plates and a fifth plate arranged opposite to each other. The two fourth plates are connected by the fifth plate, and the fifth plate is perpendicular to each of the fourth plates. The rolling element 52 is rotatably mounted on the two fourth plates. The fifth plate is connected to the third plate 213 of the connecting rod 21 by fasteners.

[0036] like Figure 5 As shown, the first limiting part 30 includes a first limiting plate 31 and a second limiting plate 32. At least a portion of the first limiting plate 31 is located within the second limiting plate 32 in the mounting space 53. The second limiting plate 32 is connected to the first limiting plate 31 within the mounting space 53 and is located near the side of the connecting rod 21, with the second limiting plate 32 and the first limiting plate 31 forming a third angle. The distance between the second limiting plate 32 and the rotation axis of the rolling element 52 gradually increases along the direction from the first limiting plate 31 to the connecting rod 21. A pressure detection device 40 is provided on the first limiting plate 31 and / or the second limiting plate 32. This arrangement of the first limiting part 30 not only improves the detection accuracy of bending deformation of the connecting rod 21, allowing even minor deformation of the connecting rod 21 to be detected by the pressure detection device 40, but also prevents excessive bending deformation of the connecting rod 21, thus avoiding damage to the locking mechanism. Meanwhile, the above-mentioned settings make the placement of the pressure detection device 40 more flexible to meet different usage needs and working conditions, and also improve the processing flexibility of the staff.

[0037] In this embodiment, the pressure detection device 40 is installed on the first limiting plate 31 and the second limiting plate 32 to monitor the force on the connecting rod 21 in real time.

[0038] Optionally, the third included angle is greater than 180° and less than 270°.

[0039] Optionally, the pressure detection device 40 is a pressure sensing strip; and / or, the door assembly for the battery cabinet also includes an alarm module electrically connected to the control module. If the pressure detection value of the pressure detection device 40 exceeds a preset range, the alarm module issues an alarm signal; and / or, the locking mechanism 20 has a self-locking module. If the pressure detection value of the pressure detection device 40 exceeds a preset range, the self-locking module is activated. Thus, the above-mentioned configuration of the pressure sensing strip not only enables continuous monitoring of the force on the connecting rod 21, improving detection accuracy, but also reduces the processing cost of the pressure detection device 40. The above-mentioned configuration of the alarm module allows for an immediate response when the connecting rod 21 deforms, alerting personnel to take appropriate measures. The above-mentioned configuration of the self-locking module prevents unauthorized opening of the battery cabinet, effectively protecting the security of internal equipment and data, reducing security risks, and improving the safety factor of the battery cabinet.

[0040] In this embodiment, the locking mechanism 20 has a self-locking module. If the pressure detection value of the pressure detection device 40 exceeds a preset range, the self-locking module is activated. After the self-locking module is activated, the two connecting rods 21 cannot move towards each other, thereby preventing maintenance personnel from forcibly opening them and causing severe deformation of the connecting rods 21.

[0041] Optionally, the battery cabinet door assembly also includes a displacement sensor, which is mounted on the door 10 and electrically connected to the control module to detect the real-time position of the door 10. When the displacement sensor detects that the door 10 is stationary, the control module controls the pressure detection value of the pressure detection device 40. If the pressure detection value of the pressure detection device 40 exceeds a preset range and is greater than or equal to a preset threshold, it is determined that at least a portion of the connecting rod 21 with the contact portion 50 protrudes towards the side away from the door 10; if the pressure detection value of the pressure detection device 40 exceeds a preset range but is less than the preset threshold, it is determined that at least a portion of the connecting rod 21 with the contact portion 50 protrudes towards the door 10. In this way, the combined use of the displacement sensor and the pressure detection device 40 can more accurately determine the deformation direction of the connecting rod 21, allowing staff to compensate for the deformation and guide the maintenance of the connecting rod 21, thereby improving the intelligence level of the door assembly.

[0042] like Figure 3As shown, the connecting rod 21 has a first mating part 214, and the locking mechanism 20 also includes a second limiting part 22. The second limiting part 22 is disposed on the door body 10 and includes a sleeve 221 and a second mating part 222 disposed on the sleeve 221. The sleeve 221 is fitted over the connecting rod 21. One of the first mating part 214 and the second mating part 222 is a protrusion, and the other is a recess. The protrusion extends into the recess and can slide along the extension direction of the recess. In this way, during the process of the driving mechanism driving the connecting rod 21 to move, the above-mentioned arrangement of the second limiting part 22 can guide and limit the connecting rod 21 to ensure that the connecting rod 21 always moves in a preset direction, thereby improving the opening and closing reliability of the locking mechanism. At the same time, the above-mentioned arrangement makes the structural selection of the first mating part 214 and the second mating part 222 more flexible to meet different usage requirements and working conditions, and also improves the processing flexibility of the workers.

[0043] In this embodiment, the first mating part 214 is a recess, and the second mating part 222 is a protrusion. The protrusion extends into the recess and can slide along the extending direction of the recess.

[0044] Specifically, the recess is an oblong hole, and the protrusion is a column. The column passes through the sleeve 221 and extends into the oblong hole. When the connecting rod 21 moves, the column slides within the oblong hole to guide and limit the movement of the connecting rod 21.

[0045] Optionally, the first mating part 214 is disposed on the third plate 213; and / or, there is one first mating part 214 and one second limiting part 22; or, there are multiple first mating parts 214, which are spaced apart along the extension direction of the connecting rod 21, and multiple second limiting parts 22, which are disposed in a one-to-one correspondence with the multiple first mating parts 214. In this way, by disposing of multiple first mating parts 214 at different positions on the connecting rod 21, and by disposing of multiple first mating parts 214 in correspondence with multiple second limiting parts 22, the guiding reliability and limiting stability of the second limiting parts 22 on the connecting rod 21 are improved, thereby further enhancing the opening and closing reliability of the top and bottom lock mechanism.

[0046] In this embodiment, by providing the first mating part 214 on the third plate 213, the mating of the second limiting part 22 and the first mating part 214 is prevented from affecting the normal opening and closing of the door 10.

[0047] like Figure 1 and Figure 3As shown, the door assembly for the battery cabinet also includes a latch 60 mounted on the first plate 211 or the second plate 212. The latch 60 includes a connecting plate 61 and a hook-shaped portion 62. The connecting plate 61 is connected to the first plate 211 or the second plate 212, and the hook-shaped portion 62 is mounted on the connecting plate 61 and protrudes from the third plate 213. This design of the latch 60 not only enables the locking function of the top and bottom locking mechanism but also enhances the connection strength between the connecting rod 21 and the door 10, effectively preventing unauthorized intrusion, protecting the safety of the equipment inside the battery cabinet, and reducing security risks. Furthermore, the above design simplifies the structure of the latch 60, making it easier to manufacture and implement, thus reducing the manufacturing cost and difficulty of the latch 60.

[0048] In this embodiment, the hook-shaped portion 62 is positioned upwards.

[0049] like Figure 5 As shown, the first limiting part 30 also includes a transition connecting plate 33, which is connected to the side of the first limiting plate 31 away from the connecting rod 21. The transition connecting plate 33 and the first limiting plate 31 are arranged at a fourth included angle and are opposite to the rolling element 52. The first limiting part 30 is connected to the door body 10 through the transition connecting plate 33. This arrangement makes the assembly and disassembly of the first limiting part 30 easier and simpler, reducing the difficulty of assembly and disassembly.

[0050] Optionally, the fourth included angle is 90°.

[0051] This application also provides an energy storage battery cabinet (not shown), including the aforementioned battery cabinet door assembly.

[0052] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0053] The battery cabinet door assembly includes a door body, a top and bottom locking mechanism, a first limiting part, a pressure detection device, and a control module. The top and bottom locking mechanism is mounted on the door body and includes a drive mechanism and two connecting rods. One connecting rod is located above and driven by the drive mechanism, and the other connecting rod is located below and driven by the drive mechanism. The drive mechanism drives the two connecting rods to move towards or away from each other to unlock and lock the top and bottom locking mechanism. At least one connecting rod has a contact part at its end away from the drive mechanism. The first limiting part is located on the door body to limit and stop the contact part. The pressure detection device is located between the first limiting part and the contact part. The control module is electrically connected to the pressure detection device. Thus, during or after the battery cabinet is moved by personnel, if the pressure detection value exceeds a preset range, it is determined that the connecting rod with the contact part has deformed. This allows personnel to monitor the deformation of the connecting rod in real time. If the connecting rod is deformed, personnel can take corresponding strategies to open or close the door, thereby solving the problem in the prior art where personnel cannot know whether the door lock rod has bent or deformed.

[0054] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0055] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A door assembly for a battery cabinet, characterized in that, The utility model relates to a door lock mechanism, comprising: a door body (10); a mortise lock mechanism (20) arranged on the door body (10), the mortise lock mechanism (20) comprising a driving mechanism and two connecting rods (21), one connecting rod (21) being arranged above the driving mechanism and being drivingly connected with the driving mechanism, the other connecting rod (21) being arranged below the driving mechanism and being drivingly connected with the driving mechanism, so that the two connecting rods (21) are driven by the driving mechanism to move towards or away from each other to realize unlocking and locking of the mortise lock mechanism (20); at least one end of the connecting rod (21) away from the driving mechanism is provided with a contact part (50); a first limiting part (30) arranged on the door body (10) for limiting and stopping the contact part (50); a pressure detection device (40) arranged between the first limiting part (30) and the contact part (50); a control module electrically connected with the pressure detection device (40); wherein if the pressure detection value of the pressure detection device (40) exceeds a preset range value, it is judged that the connecting rod (21) provided with the contact part (50) is deformed.

2. The door assembly for a battery cabinet of claim 1, wherein, Each connecting rod (21) comprises: first and second plate bodies (211 and 212) arranged oppositely; a third plate body (213) connecting the first plate body (211) and the second plate body (212), the first plate body (211) and the third plate body (213) being arranged at a first included angle, and the second plate body (212) and the third plate body (213) being arranged at a second included angle; wherein the first plate body (211) and the second plate body (212) are located on the same side of the third plate body (213).

3. The door assembly for a battery cabinet of claim 1, wherein, The contact part (50) is two, and the two contact parts (50) are arranged one by one corresponding to the two connecting rods (21), each contact part (50) comprising: a mounting bracket (51), the first side of the mounting bracket (51) being arranged on the end of the connecting rod (21); a rolling body (52) rotatably arranged on the second side of the mounting bracket (51); wherein the second side of the mounting bracket (51) is suspended to form a mounting space (53) between the rolling body (52) and the door body (10).

4. The door assembly for a battery cabinet of claim 3, wherein, The first limiting part (30) comprises: a first limiting plate (31), at least part of the first limiting plate (31) being located in the mounting space (53); a second limiting plate (32) connected with the side of the first limiting plate (31) located in the mounting space (53) and close to the connecting rod (21), the second limiting plate (32) and the first limiting plate (31) being arranged at a third included angle; In the direction from the first limiting plate (31) to the connecting rod (21), the distance between the second limiting plate (32) and the rotation axis of the rolling element (52) gradually increases; the pressure detection device (40) is disposed on the first limiting plate (31) and / or the second limiting plate (32).

5. The door assembly for a battery cabinet according to claim 1, characterized in that, The pressure detection device (40) is a pressure sensing band; and / or, The battery cabinet door assembly also includes an alarm module electrically connected to the control module. If the pressure detection value of the pressure detection device (40) exceeds a preset range, the alarm module issues an alarm signal; and / or, The locking mechanism (20) has a self-locking module. If the pressure detection value of the pressure detection device (40) exceeds the preset range, the self-locking module is activated.

6. The door assembly for a battery cabinet of claim 1, wherein, The door assembly for the battery cabinet also includes: A displacement sensor is disposed on the door body (10) and electrically connected to the control module to detect the real-time position of the door body (10); When the displacement sensor detects that the door (10) is stationary, the pressure detection value of the pressure detection device (40) is controlled by the control module. If the pressure detection value of the pressure detection device (40) exceeds the preset range value and is greater than or equal to the preset threshold, it is determined that at least a portion of the connecting rod (21) of the contact part (50) protrudes toward the side away from the door (10). If the pressure detection value of the pressure detection device (40) exceeds the preset range value and is less than the preset threshold, it is determined that at least a portion of the connecting rod (21) of the contact part (50) protrudes toward the door (10).

7. The door assembly for a battery cabinet of claim 2, wherein, The connecting rod (21) has a first mating part (214), and the locking mechanism (20) further includes: The second limiting part (22) is provided on the door body (10). The second limiting part (22) includes a sleeve (221) and a second mating part (222) provided on the sleeve (221). The sleeve (221) is sleeved on the connecting rod (21). One of the first mating part (214) and the second mating part (222) is a protrusion, and the other of the first mating part (214) and the second mating part (222) is a recess. The protrusion extends into the recess and can slide along the extension direction of the recess.

8. The door assembly for a battery cabinet of claim 7, wherein, The first mating part (214) is disposed on the third plate (213); and / or, there is one first mating part (214) and one second limiting part (22); or, there are multiple first mating parts (214), which are spaced apart along the extension direction of the connecting rod (21), and multiple second limiting parts (22), which are disposed in a one-to-one correspondence with the multiple first mating parts (214).

9. The door assembly for a battery cabinet of claim 2, wherein, The battery cabinet door assembly further includes a latch (60) disposed on the first plate (211) or the second plate (212), the latch (60) comprising: A connecting plate (61) is connected to the first plate (211) or the second plate (212); A hook-shaped part (62) is provided on the connecting plate (61) and protrudes from the third plate (213).

10. An energy storage battery cabinet, characterized by, Includes the door assembly for the battery cabinet as described in any one of claims 1 to 9.

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