Battery module and energy storage cabinet

Abstract

The utility model discloses a battery module and an energy storage cabinet, relates to the technical field of energy storage devices, and is used for solving the problem of low structural strength of a mounting frame in an existing battery module. The battery module provided by the utility model comprises a mounting frame, wherein the mounting frame comprises a bottom frame body and a top frame body which are oppositely arranged in the height direction, and a mounting space limited between the bottom frame body and the top frame body; the plurality of battery cell modules are arranged in the mounting space and are stacked on the bottom frame body along the height direction; the reinforcing assembly comprises a reinforcing frame and a fixing structure connected with the reinforcing frame, and the fixing structure is connected with the top frame body. The structural strength of the mounting frame is improved.

Description

Battery modules and energy storage cabinets Technical Field

[0001] This application relates to the technical field of energy storage devices, specifically to a battery module and an energy storage cabinet. Background Technology

[0002] Currently, the common battery installation method for commercial and industrial energy storage cabinets on the market is to integrate a certain number of battery cell modules together as an integrated module. In the design and application of energy storage cabinets, capacity requirements often vary depending on the specific application scenario and actual usage requirements. To meet diverse energy storage needs, it is necessary to flexibly increase the number of integrated modules according to different capacity requirements.

[0003] However, due to the relatively heavy weight of a single integrated module, the weight borne by the mounting frame that houses it also increases accordingly. In actual use, the mounting frame will inevitably be subjected to various external forces, such as during the installation and handling of the battery module. Therefore, it is necessary to strengthen the mechanical properties of the mounting frame for the integrated module to prevent it from easily deforming or being damaged under external forces. Summary of the Invention

[0004] This application provides a battery module and energy storage cabinet that can solve the problem of low structural strength of the mounting frame in existing battery modules.

[0005] To achieve the above objectives, in a first aspect, the battery module provided in this application includes:

[0006] The mounting frame includes a bottom frame body and a top frame body that are arranged opposite each other in the height direction, wherein an installation space is formed between the bottom frame body and the top frame body;

[0007] Multiple battery cell modules are installed in the installation space and stacked on the bottom frame body along the height direction;

[0008] The reinforcing component includes a reinforcing frame and a fixing structure connected to the reinforcing frame, the fixing structure being connected to the top frame body.

[0009] In some embodiments of this application, the mounting frame has a width direction that intersects with the height direction;

[0010] The top frame body includes a front top beam and a rear top beam, wherein the front top beam and the rear top beam are spaced apart along the width direction;

[0011] The fixing structure includes a first fixing member and a second fixing member. The first fixing member connects the front top beam and the reinforcing frame, and the second fixing member connects the rear top beam and the reinforcing frame.

[0012] In some embodiments of this application, the rear top beam has a first wall facing the reinforcing frame, and the first fastener has a second wall facing away from the reinforcing frame.

[0013] When the first fastener is assembled with the front top beam and the second fastener is assembled with the rear top beam, there is a first distance X1 between the first wall surface and the reinforcing frame, and a second distance X2 between the second wall surface and the reinforcing frame, wherein X2≤X1.

[0014] In some embodiments of this application, both the first fastener and the second fastener protrude from the reinforcing frame in the height direction toward the bottom frame body. The first fastener has a first protrusion height H1, and the second fastener has a second protrusion height H2, wherein H1 < H2.

[0015] In some embodiments of this application, both the first fastener and the second fastener are welded to the reinforcing frame.

[0016] In some embodiments of this application, the mounting frame has a width direction that intersects with the height direction;

[0017] The reinforcing frame includes a first connecting beam and a second connecting beam disposed opposite each other in the width direction, and a reinforcing beam connecting the first connecting beam and the second connecting beam.

[0018] In some embodiments of this application, the mounting frame has a width direction that intersects with the height direction;

[0019] Each cell module includes a cell body, a front-end board, a rear-end board, and a liquid cooling plate. The front-end board and the rear-end board are respectively disposed on opposite sides of the cell body in the width direction. The cell body has a first end face facing the bottom frame body. The liquid cooling plate is disposed on the first end face and is fixedly connected between the front-end board and the rear-end board.

[0020] In some embodiments of this application, the mounting frame further includes at least two vertical beams connected between the bottom frame body and the top frame body, with the front end plate and the rear end plate respectively fixedly connected to the corresponding vertical beams.

[0021] In some embodiments of this application, each cell body has a second end face facing away from the bottom frame body;

[0022] In two adjacent cell modules, there is a gap between the second end face of the cell body of one cell module and the liquid cooling plate of the other cell module.

[0023] In some embodiments of this application, the mounting frame has a width direction that intersects with the height direction;

[0024] The bottom frame body includes a front bottom beam and a rear bottom beam arranged opposite each other in the width direction, as well as a front fastener and a rear fastener, both used for connecting to the cabinet.

[0025] The front fastener is mounted on the front bottom beam, and the rear fastener is mounted on the rear bottom beam.

[0026] In some embodiments of this application, the mounting frame has a width direction that intersects with the height direction;

[0027] The bottom frame body includes a first side and a second side arranged opposite each other in the width direction. A first mounting groove is provided at the end of the bottom frame body near the first side, and a second mounting groove is provided at the end of the bottom frame body near the second side.

[0028] The first mounting slot contains a front fixing component, and the second mounting slot contains a rear fixing component. Both the front and rear fixing components are used to connect to the cabinet.

[0029] In some embodiments of this application, a lifting ring assembly is provided on the reinforcing frame.

[0030] Secondly, the energy storage cabinet provided in this application includes:

[0031] The cabinet has a top plate and a bottom plate arranged opposite each other in the height direction, and an energy storage cavity defined between the top plate and the bottom plate;

[0032] As described in any of the above technical solutions, the battery module is located inside the energy storage cavity.

[0033] In some embodiments of this application, the energy storage cavity includes a first sub-cavity and a second sub-cavity arranged along the height direction, with the first sub-cavity relatively close to the top plate;

[0034] The battery module is located inside the first sub-cavity;

[0035] The second sub-cavity contains a power conversion module, a liquid cooling unit, and a power distribution box.

[0036] In some embodiments of this application, a clearance hole is provided on the top plate, and a lifting ring assembly is provided on the reinforcing frame. The lifting ring assembly passes through the clearance hole and extends out of the cabinet.

[0037] In some embodiments of this application, the top plate and the reinforcing frame are welded together.

[0038] The above-mentioned technical solution of this application has at least the following beneficial effects:

[0039] The reinforcing frame in the reinforcing component of this application is connected to the top frame body through a fixed structure, which can reinforce the structure of the entire battery module from the direction perpendicular to the stacking direction of the cell modules (i.e., the vertical direction of the height direction), improve the structural strength of the mounting frame, and prevent the mounting frame from twisting, bending, etc. when subjected to external forces. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 is one of the perspective views of the battery module in the embodiment of this application;

[0042] Figure 2 is a perspective view of the mounting frame in the battery module in an embodiment of this application;

[0043] Figure 3 is a perspective view of the reinforcing component in the battery module in an embodiment of this application;

[0044] Figure 4 is a side view of the battery module in an embodiment of this application;

[0045] Figure 5 is a side view of the reinforcing component in the battery module in an embodiment of this application;

[0046] Figure 6 is a perspective view of the cell module in the battery module of this application embodiment;

[0047] Figure 7 is a second perspective view of the battery module in an embodiment of this application;

[0048] Figure 8 is a front view of the energy storage cabinet in an embodiment of this application;

[0049] Figure 9 is an enlarged view of part A in Figure 8.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1-Mounting frame; 11-Bottom frame body; 11a-First side; 11b-Second side; 111-Front bottom beam; 116-First mounting slot; 112-Rear bottom beam; 117-Second mounting slot; 113-Front fastener; 114-Rear fastener; 115-Forklift slot; 12-Top frame body; 121-Front top beam; 122-Rear top beam; 1221-First wall surface; 13-Mounting space; 14-Vertical beam;

[0052] 2-Cell module; 21-Cell body; 211-First end face; 212-Second end face; 22-Front end board; 23-Rear end board; 24-Liquid cooling plate; 2a-Gap;

[0053] 3-Reinforcing component; 31-Reinforcing frame; 311-First connecting beam; 312-Second connecting beam; 313-Reinforcing beam; 32-Fixing structure; 321-First fastener; 3211-Second wall surface; 322-Second fastener;

[0054] 4- Lifting ring assembly;

[0055] 10-Cabinet body; 101-Top plate; 1011-Avoidance hole; 102-Bottom plate; 103-Energy storage cavity; 1031-First sub-cavity; 1032-Second sub-cavity;

[0056] 20-Power conversion module;

[0057] 30-Liquid-cooled unit;

[0058] 40 - Distribution box;

[0059] Z - Height direction; X - Width direction; Y - Length direction. Detailed Implementation

[0060] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0061] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0062] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0064] This application provides a battery module and an energy storage cabinet, which will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of the embodiments of this application. Furthermore, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments.

[0065] Currently, the common battery installation method for commercial and industrial energy storage cabinets on the market is to integrate a certain number of battery cell modules together as an integrated module. In the design and application of energy storage cabinets, capacity requirements often vary depending on the specific application scenario and actual usage requirements. To meet diverse energy storage needs, it is necessary to flexibly increase the number of integrated modules according to different capacity requirements.

[0066] However, due to the significant weight of a single integrated module, the mounting frame bearing the load also increases accordingly. In actual use, the mounting frame inevitably experiences various external forces, such as during the installation and handling of battery modules. Therefore, it is necessary to strengthen the mechanical properties of the mounting frame to prevent deformation or damage under external forces. This not only affects the overall performance and stability of the energy storage cabinet but may also pose a potential threat to the safety of the internal battery cell modules and the entire energy storage system.

[0067] Therefore, this application provides a battery module that strengthens the mechanical properties of the mounting frame for installing the battery cell module, giving the mounting frame sufficient strength and rigidity to effectively resist the influence of external forces and ensure the normal operation and service life of the energy storage cabinet.

[0068] Referring to Figures 1 and 2, the battery module includes a mounting frame 1, multiple battery cell modules 2, and a reinforcing assembly 3. The mounting frame 1 includes a bottom frame body 11 and a top frame body 12 disposed opposite each other in the height direction Z, and a mounting space 13 defined between the bottom frame body 11 and the top frame body 12. The multiple battery cell modules 2 are disposed within the mounting space 13 and stacked on the bottom frame body 11 along the height direction Z. The reinforcing assembly 3 includes a reinforcing frame 31 and a fixing structure 32 connected to the reinforcing frame 31, the fixing structure 32 being connected to the top frame body 12.

[0069] In this technical solution, an installation space 13 is formed between the bottom frame body 11 and the top frame body 12. The reinforcing frame 31 in the reinforcing assembly 3 is connected to the top frame body 12 through a fixing structure 32. This reinforces the entire battery module structure from the stacking direction perpendicular to the cell module 2 (i.e., the direction perpendicular to the height direction Z), improving the structural strength of the mounting frame 1 and preventing the mounting frame 1 from twisting or bending under external forces. Furthermore, in the battery module's operating environment, it may be subjected to external pressure. The reinforcing frame 31 of the reinforcing assembly 3, through the fixing structure 32, can distribute some of the pressure to the top frame body 12 and the entire mounting frame 1, preventing pressure concentration on the cell module 2, thereby protecting the cell module 2 from damage by external pressure and extending its service life.

[0070] Referring to Figures 1-3, the mounting frame 1 has a width direction X, which intersects with the height direction Z. The top frame body 12 includes a front top beam 121 and a rear top beam 122 that are opposite to and spaced apart in the width direction X. The fixing structure 32 includes a first fixing member 321 and a second fixing member 322. The first fixing member 321 connects the front top beam 121 and the reinforcing frame 31, and the second fixing member 322 connects the rear top beam 122 and the reinforcing frame 31. This allows the force from the reinforcing frame 31 to be evenly transmitted to the front top beam 121 and the rear top beam 122 of the top frame body 12, improving the stability of the mounting frame 1. For example, when the battery module is subjected to external impact (such as a collision during transportation or an accidental collision during use), the stress will not concentrate at a single point, but will be distributed along the first fixing member 321 and the second fixing member 322 throughout the entire top frame body 12, enhancing the overall mounting frame 1's ability to resist external forces and improving its stability.

[0071] Furthermore, the design of the first fixing member 321 and the second fixing member 322 allows the reinforcing component 3 to be disassembled and installed relative to the mounting frame 1. Specifically, if the reinforcing frame 31 or its related fixing structure 32 is damaged, maintenance personnel can easily disassemble the first fixing member 321 and the second fixing member 322 to replace or repair the reinforcing component 3 without causing unnecessary interference to the entire mounting frame 1 or the cell module 2, thus improving the maintainability of the battery module.

[0072] In other words, the reinforcing component 3 is located outside the installation space 13, that is, the reinforcing component 3 is located on the top side of the top frame body 12. The front top beam 121 and the rear top beam 122 are spaced apart along the width direction X, and correspondingly, the first fastener 321 and the second fastener 322 are also spaced apart along the width direction X.

[0073] Referring to Figures 3 and 4, the rear top beam 122 has a first wall surface 1221 facing the reinforcing frame 31, and the first fastener 321 has a second wall surface 3211 facing away from the reinforcing frame 31. When the first fastener 321 is assembled with the front top beam 121, and the second fastener 322 is assembled with the rear top beam 122, there is a first distance X1 between the first wall surface 1221 and the reinforcing frame 31, and a second distance X2 between the second wall surface 3211 and the reinforcing frame 31, where X2 ≤ X1. That is, when the first fastener 321 is assembled with the front top beam 121, and the second fastener 322 is assembled with the rear top beam 122, the first wall surface 1221 and the second wall surface 3211 are flush in the height direction Z, or the first wall surface 1221 is further away from the reinforcing frame 31 than the second wall surface 3211.

[0074] During the installation process, the reinforcing frame 31 is welded to the top plate 101 (see Figure 8) of the cabinet 10 (see Figure 8) of the energy storage cabinet, facing the energy storage cavity 103 (see Figure 8). Then, the mounting frame 1 and the battery module 2 are assembled into an integrated structure. From the front side to the rear side of the cabinet 10, the integrated mounting frame 1 and the battery module 2 are gradually pushed into the energy storage cavity 103 in a horizontal direction perpendicular to the height direction Z. The rear top beam 122 of the mounting frame 1 will enter the cabinet 10 first. Since the first wall surface 1221 of the rear top beam 122 (i.e., the top surface of the rear top beam 122 in the figure) and the second wall surface 3211 of the first fixing member 321 (i.e., the bottom surface of the first fixing member 321 in the figure) are on the same plane or slightly lower than the second wall surface 3211 of the first fixing member 321. Therefore, the first wall surface 1221 of the rear top beam 122 will not interfere with or collide with the second wall surface 3211 of the first fastener 321, which is conducive to the installation of the integrated structure mounting frame 1 and the battery cell module 2.

[0075] In other embodiments of this application, referring to Figures 3 and 4, the front top beam 121 is closer to the reinforcing frame 31 than the rear top beam 122. Both the first fastener 321 and the second fastener 322 protrude from the outside of the reinforcing frame 31 along the height direction Z towards the bottom frame body 11. The first fastener 321 has a first protrusion height H1, and the second fastener 322 has a second protrusion height H2, where H1 < H2. In other words, the front top beam 121 is positioned higher than the rear top beam 122. The reinforcing frame 31 is in the same horizontal plane. The first protrusion height H1 of the first fastener 321 is less than the second protrusion height H2 of the second fastener 322. In other words, taking the bottom frame body 11 as a reference plane, the front top beam 121 is positioned higher than the rear top beam 122, and the bottom end of the first fixing member 321 is higher than the bottom end of the second fixing member 322. When the rear top beam 122 of the mounting frame 1 is engaged with the mounting frame 1 by utilizing the height difference between the first fixing member 321 and the second fixing member 322, the rear top beam 122 of the mounting frame 1 can smoothly pass through the first fixing member 321 and thus engage with the second fixing member 322. At this time, the front top beam 121 of the mounting frame 1 engages with the first fixing member 321 to achieve the connection between the mounting frame 1 and the reinforcing component 3, thus avoiding interference during the pushing process of the mounting frame 1.

[0076] In this design, both the first fastener 321 and the second fastener 322 are welded to the reinforcing frame 31. Welding allows the first fastener 321, the second fastener 322, and the reinforcing frame 31 to form a continuous, integral structure. During the welding process, the metal atoms fuse together, allowing the strength of the connection to approach or even equal the strength of the base material (i.e., the materials of the fasteners and the reinforcing frame 31 themselves). In contrast, bolted connections, which clamp two components together with bolts and nuts, leave gaps at the connection points, weakening the overall structural strength. While riveting can also connect components, it creates stress concentration points at the riveting points, and the connection strength of riveting is relatively lower than that of welding.

[0077] Referring to Figure 3, the mounting frame 1 has a width direction X, which intersects with the height direction Z. The reinforcing frame 31 includes a first connecting beam 311 and a second connecting beam 312 arranged opposite each other in the width direction X, and a reinforcing beam 313 connecting the first connecting beam 311 and the second connecting beam 312. With this design, the reinforcing beam 313 connects the first connecting beam 311 and the second connecting beam 312, forming a truss-like structure. This structure has high mechanical rigidity and can better withstand forces from different directions compared to a structure relying solely on a single beam. For example, there are three reinforcing beams 313, with two beams connected to the two ends of the first connecting beam 311 and the second connecting beam 312 respectively, and the remaining beam connected at the middle position of the first connecting beam 311 and the second connecting beam 312 to further improve the structural strength of the reinforcing frame 31.

[0078] For example, the mounting frame 1 has a length direction Y, and the first connecting beam 311 and the second connecting beam 312 both extend along the length direction Y and are arranged opposite to each other and spaced apart in the width direction X. The reinforcing beam 313 extends along the width direction X, and its two ends in the width direction X are respectively connected to the first connecting beam 311 and the second connecting beam 312.

[0079] Referring to Figures 1, 2, and 6, the mounting frame 1 has a width direction X, which intersects with the height direction Z. Each battery cell module 2 includes a battery cell body 21, a front end plate 22, a rear end plate 23, and a liquid cooling plate 24. The front end plate 22 and the rear end plate 23 are respectively disposed on opposite sides of the battery cell body 21 in the width direction X. The battery cell body 21 has a first end face 211 facing the bottom frame body 11. The liquid cooling plate 24 is disposed on the first end face 211 and is fixedly connected between the front end plate 22 and the rear end plate 23. Specifically, the front end plate 22 and the rear end plate 23 are located on opposite sides of the battery cell body 21 in the width direction X, providing lateral support and protection for the battery cell body 21. The liquid cooling plate 24 is fixedly connected between the front end plate 22 and the rear end plate 23, further connecting the various components of the battery cell module 2 into a whole. When the battery cell module 2 is subjected to external forces (such as vibration or collision during transportation), the overall mechanical properties are transmitted through the front end plate 22, the rear end plate 23 and the liquid cooling plate 24, making the battery cell body 21 less prone to damage and improving the structural stability of the battery cell module 2.

[0080] In this embodiment, the mounting frame 1 further includes at least two vertical beams 14 connected between the bottom frame body 11 and the top frame body 12. The front end plate 22 and the rear end plate 23 are respectively fixedly connected to the corresponding vertical beams 14. The vertical beams 14 connect the bottom frame body 11 and the top frame body 12, serving as the vertical support structure of the mounting frame 1 and ensuring the structural strength of the mounting frame 1. Simultaneously, the front end plate 22 and the rear end plate 23 are respectively fixedly connected to the corresponding vertical beams 14 with screws. The battery cell module 2 can transmit force to the vertical beams 14 through the front end plate 22 and the rear end plate 23, and the vertical beams 14 then distribute the force to the bottom frame body 11 and the top frame body 12, thereby enhancing the strength of the entire battery module structure.

[0081] Each cell body 21 has a second end face 212 facing away from the bottom frame body 11. In two adjacent cell modules 2, there is a gap 2a between the second end face 212 of the cell body 21 of one cell module 2 and the liquid cooling plate 24 of the other cell module 2. During operation, the cell generates heat, causing the cell body 21 to expand. The gap 2a between adjacent cell modules 2 provides a buffer space for the thermal expansion of the cell body 21. When the cell body 21 expands due to heat, the gap 2a between the second end face 212 and the liquid cooling plate 24 prevents the cell bodies 21 from squeezing each other due to expansion, thus mitigating damage to the cell body 21 to some extent, reducing safety risks such as short circuits caused by thermal expansion, and contributing to improved battery module safety and lifespan. For example, the liquid cooling plate 24 of the other cell module 2 is directly connected to the upper surfaces of the front end plate 22 and the rear end plate 23 of the cell module 2, thereby avoiding the transmission of force to the cell body 21, which helps to further improve the structural strength of the battery module.

[0082] Referring to Figures 2 and 7, the bottom frame body 11 includes a front bottom beam 111 and a rear bottom beam 112 arranged opposite each other in the width direction X, and a front fixing member 113 and a rear fixing member 114, both used for connecting to the cabinet 10. The front fixing member 113 is disposed on the front bottom beam 111, and the rear fixing member 114 is disposed on the rear bottom beam 112. By disposing of the front fixing member 113 and the rear fixing member 114 on the front bottom beam 111 and the rear bottom beam 112 respectively, the installation of the mounting frame 1 in the cabinet 10 becomes more convenient. During assembly, the operator can first place the mounting frame 1 in the predetermined position, and then quickly connect the mounting frame 1 to the cabinet 10 using the front fixing member 113 and the rear fixing member 114, reducing the difficulty and complexity of installation and improving installation efficiency.

[0083] In this embodiment, the mounting frame 1 has a width direction X, which intersects with the height direction Z. The bottom frame body 11 includes a first side 11a and a second side 11b arranged opposite each other in the width direction X. A first mounting groove 116 is provided at the end of the bottom frame body 11 near the first side 11a, and a second mounting groove 117 is provided at the end of the bottom frame body 11 near the second side 11b. A front fixing member 113 is provided in the first mounting groove 116, and a rear fixing member 114 is provided in the second mounting groove 117. Both the front fixing member 113 and the rear fixing member 114 are used to connect to the cabinet 10. The recessed design (first mounting groove 116 and second mounting groove 117) allows the front fixing member 113 and the rear fixing member 114 to be partially or completely embedded inside the bottom frame body 11. Given the limited overall structural space of the battery module, this effectively saves external space and avoids the fixing members (front fixing member 113 and rear fixing member 114) protruding excessively and occupying additional space.

[0084] To facilitate the handling of the battery modules, the reinforced frame 31 is equipped with lifting ring assemblies 4. These lifting ring assemblies 4 provide dedicated connection points for lifting equipment (such as lifting devices on cranes or forklifts). Operators can easily use lifting equipment to lift the battery modules via the lifting ring assemblies 4, transferring them from one location to another, thus improving operational convenience. In other embodiments, the bottom frame body 11 is provided with forklift slots 115, allowing forklifts to directly insert their forks into these slots, enabling the battery modules to be easily lifted and moved by the forklift.

[0085] It should be noted that the first mounting groove 116 can be directly disposed on the front bottom beam 111, or the front bottom beam 111 connecting two adjacent forklift slots 115 can be recessed relative to one end of the two adjacent forklift slots 115, so that the three together form the first mounting groove 116. Similarly, the second mounting groove 117 can be directly disposed on the rear bottom beam 112, or the rear bottom beam 112 connecting two adjacent forklift slots 115 can be recessed relative to the other end of the two adjacent forklift slots 115, so that the three together form the second mounting groove 117.

[0086] Referring to Figure 8, the energy storage cabinet provided in this application includes a cabinet body 10 and a battery module as described in any of the above-described technical solutions. The cabinet body 10 has a top plate 101 and a bottom plate 102 disposed opposite each other in the height direction Z, and an energy storage cavity 103 defined between the top plate 101 and the bottom plate 102. The battery module is disposed within the energy storage cavity 103. Since the battery module in the energy storage cabinet provided in this application has the same structure as the battery module described above, both can solve the same technical problem and achieve the same technical effect.

[0087] In this embodiment, the energy storage cavity 103 includes a first sub-cavity 1031 and a second sub-cavity 1032 arranged along the height direction Z, with the first sub-cavity 1031 relatively close to the top plate 101. The battery module is disposed within the first sub-cavity 1031. The second sub-cavity 1032 houses a power conversion module 20, a liquid cooling unit 30, and a power distribution box 40. This application achieves functional partitioning by placing the battery module in the first sub-cavity 1031 and the power conversion module 20, liquid cooling unit 30, and power distribution box 40 in the second sub-cavity 1032. The battery module may generate electromagnetic interference during operation; this partitioned layout effectively reduces electromagnetic interference from the battery module to the power conversion module 20, liquid cooling unit 30, and power distribution box 40, ensuring the normal operation of other components and improving the stability and reliability of the entire energy storage system.

[0088] Referring to Figures 8 and 9, a clearance hole 1011 is provided on the top plate 101, and a lifting ring assembly 4 is provided on the reinforcing frame 31. The lifting ring assembly 4 passes through the clearance hole 1011 and extends out of the cabinet 10. The existence of the clearance hole 1011 ensures that the lifting ring assembly 4 has no direct force connection with the cabinet 10 during lifting. Therefore, lifting equipment (such as lifting devices equipped with cranes or forklifts) can directly connect to the lifting ring assembly 4 and apply an upward pulling force. In practical use, when handling the battery module (such as removing it from or placing it into the cabinet 10), the pulling force is directly transmitted to the reinforcing frame 31 of the battery module through the lifting ring assembly 4, making the battery module a relatively independent unit physically and mechanically, without any force interaction with the cabinet 10 during lifting. Therefore, compared with traditional industrial and commercial cabinets, the cabinet 10 of this application does not require the cabinet frame to bear the force. At this time, the frame of the cabinet 10 only bears the functions of appearance and protection. Therefore, the mechanical strength of the frame of the cabinet 10 itself can be greatly reduced, which is conducive to reducing the cost of the cabinet 10.

[0089] In this embodiment, the top plate 101 and the reinforcing frame 31 are welded together. Welding enables the top plate 101 and the reinforcing frame 31 to form a continuous, integral structure. When the battery module is subjected to external forces (such as vibrations or collisions during transportation or operational forces during installation), this robust connection can effectively transfer the force from the top plate 101 to the reinforcing frame 31, and then the reinforcing frame 31 distributes the force throughout the entire battery module structure.

[0090] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0091] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims. Furthermore, specific examples have been used in the specification to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application, and the content of this specification should not be construed as a limitation of this application.

Claims

1. A battery module, characterized in that, include: The mounting frame includes a bottom frame body and a top frame body arranged opposite each other in the height direction, wherein an mounting space is formed between the bottom frame body and the top frame body; a plurality of battery cell modules are disposed in the mounting space and stacked on the bottom frame body along the height direction; a reinforcing component includes a reinforcing frame and a fixing structure connected to the reinforcing frame, the fixing structure being connected to the top frame body.

2. The battery module according to claim 1, characterized in that, The mounting frame has a width direction, which intersects with the height direction; the top frame body includes a front top beam and a rear top beam, wherein the front top beam and the rear top beam are spaced apart along the width direction; the fixing structure includes a first fixing member and a second fixing member, the first fixing member connecting the front top beam and the reinforcing frame, and the second fixing member connecting the rear top beam and the reinforcing frame.

3. The battery module according to claim 2, characterized in that, The rear top beam has a first wall facing the reinforcing frame, and the first fastener has a second wall facing away from the reinforcing frame; when the first fastener is assembled with the front top beam and the second fastener is assembled with the rear top beam, there is a first distance X1 between the first wall and the reinforcing frame, and a second distance X2 between the second wall and the reinforcing frame, wherein X2≤X1.

4. The battery module according to claim 2, characterized in that, Both the first fastener and the second fastener protrude from the reinforcing frame along the height direction toward the bottom frame body. The first fastener has a first protrusion height H1, and the second fastener has a second protrusion height H2, wherein H1 < H2.

5. The battery module according to claim 1, characterized in that, The mounting frame has a width direction that intersects with the height direction; the reinforcing frame includes a first connecting beam and a second connecting beam disposed opposite each other in the width direction, and a reinforcing beam connecting the first connecting beam and the second connecting beam.

6. The battery module according to claim 1, characterized in that, The mounting frame has a width direction, which intersects with the height direction; each battery cell module includes a battery cell body, a front end plate, a rear end plate, and a liquid cooling plate. The front end plate and the rear end plate are respectively disposed on opposite sides of the battery cell body in the width direction. The battery cell body has a first end face facing the bottom frame body. The liquid cooling plate is disposed on the first end face and is fixedly connected between the front end plate and the rear end plate.

7. The battery module according to claim 6, characterized in that, The mounting frame also includes at least two vertical beams connected between the bottom frame body and the top frame body, and the front end plate and the rear end plate are respectively fixedly connected to the corresponding vertical beams.

8. The battery module according to claim 1, characterized in that, The mounting frame has a width direction, which intersects with the height direction; the bottom frame body includes a front bottom beam and a rear bottom beam arranged opposite each other in the width direction, as well as a front fixing member and a rear fixing member, both for connecting with the cabinet; the front fixing member is disposed on the front bottom beam, and the rear fixing member is disposed on the rear bottom beam.

9. The battery module according to claim 1, characterized in that, The mounting frame has a width direction, which intersects with the height direction; the bottom frame body includes a first side and a second side arranged opposite to each other in the width direction, a first mounting groove is provided at the end of the bottom frame body near the first side, and a second mounting groove is provided at the end of the bottom frame body near the second side; wherein, a front fixing member is provided in the first mounting groove, and a rear fixing member is provided in the second mounting groove, and both the front fixing member and the rear fixing member are used to connect with the cabinet.

10. The battery module according to claim 1, characterized in that, The reinforcing frame is equipped with a lifting ring assembly.

11. An energy storage cabinet, characterized in that, include: The cabinet has a top plate and a bottom plate disposed opposite each other in the said height direction, and an energy storage cavity defined between the top plate and the bottom plate. ； The battery module as described in any one of claims 1 to 10, wherein the battery module is disposed within the energy storage cavity.

12. The energy storage cabinet according to claim 11, characterized in that, The energy storage cavity includes a first sub-cavity and a second sub-cavity arranged along the height direction, with the first sub-cavity being relatively close to the top plate; the battery module is disposed in the first sub-cavity; and the second sub-cavity is provided with a power conversion module, a liquid cooling unit, and a power distribution box.

13. The energy storage cabinet according to claim 11, characterized in that, The top plate has a clearance hole, and the reinforcing frame is provided with a lifting ring assembly, which passes through the clearance hole and extends out of the cabinet.

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