Battery pack and electric device

Abstract

The application provides a battery pack and an electric equipment. The technical field is battery design. The battery pack comprises a box body and a lifting lug assembly. The lifting lug assembly is arranged on at least one side of the box body; the lifting lug assembly comprises a connecting piece and a lifting piece which are connected with each other, the connecting piece is connected with the box body, and the lifting piece is arranged on the side of the connecting piece away from the box body. The embodiments of the application improve the rigidity of the lifting lug of the battery pack and improve the use performance of the electric equipment.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery pack and electrical device. Background Technology

[0002] As new energy vehicles develop at an increasingly rapid pace, the demand for reliable performance in battery packs, which are their core components, is also increasing.

[0003] In related technologies, the battery pack is equipped with lifting lugs. On the one hand, the lifting lugs provide a convenient gripping and securing point, allowing the battery pack to be safely lifted and moved during production, transportation, and installation. On the other hand, during vehicle assembly, the lifting lugs can be used to secure the battery pack to the vehicle frame or chassis. Currently, the lifting lugs are integrated cold-drawn tubing components.

[0004] However, the existing battery pack lugs have insufficient rigidity. Utility Model Content

[0005] This application provides a battery pack and an electrical device that improves the rigidity of the battery pack's lifting lugs and enhances the performance of the electrical device.

[0006] In a first aspect, embodiments of this application provide a battery pack, comprising:

[0007] Box;

[0008] A lifting lug assembly is provided on at least one side of the enclosure; the lifting lug assembly includes a connector and a lifting member that are connected to each other, the connector is connected to the enclosure, and the lifting member is provided on the side of the connector that is away from the enclosure.

[0009] In some embodiments of this application, the lifting component is a welded component; the lifting component includes a first lifting part and a second lifting part that are connected to each other; the first lifting part and the second lifting part are arranged sequentially along the height direction of the box body.

[0010] In some embodiments of this application, the first lifting part is disposed on top of the second lifting part along the height direction of the box.

[0011] The first hoisting unit comprises a first section, a second section, and a third section connected in sequence.

[0012] The first section is connected to the connector, and the first section extends along the height direction of the box.

[0013] The second section is located on the side of the first section away from the connector, and the second section is curved. The second section is recessed towards the side closer to the housing.

[0014] The third section is located on the side of the second section away from the first section; the extension direction of the third section intersects with the height direction of the box.

[0015] In some embodiments of this application, the second hoisting part includes a fourth segment, a fifth segment, and a sixth segment connected in sequence.

[0016] The fourth section is connected to the connector, and the fourth section extends along the height of the box.

[0017] The fifth section is located on the side of the fourth section away from the connector, and the fifth section is an arc-shaped section. The fifth section is recessed towards the side closer to the housing.

[0018] The sixth section is located on the side of the fifth section away from the fourth section; the extension direction of the sixth section intersects with the height direction of the box.

[0019] In some embodiments of this application, the housing includes a base plate, and the end of the second hoisting part near the housing is connected to the base plate.

[0020] In some embodiments of this application, a rib structure is provided on the first hoisting part.

[0021] And / or, the second hoisting section is equipped with a rib structure.

[0022] In some embodiments of this application, the battery pack further includes a sleeve.

[0023] The first hoisting part has a first opening on the side away from the box body, and the second hoisting part has a second opening on the side away from the box body; the first opening and the second opening are arranged opposite each other along the height direction of the box body.

[0024] The sleeve has a first opening and a second opening at its two ends, respectively.

[0025] In some embodiments of this application, the first hoisting part is provided with a docking end, which is used to dock with the docking end of an external electrical device.

[0026] In some embodiments of this application, the connector includes a connecting plate, and a welding part is provided on the connector. The connecting plate is connected to the housing through the welding part.

[0027] There are multiple welded parts, which are arranged in an array along the extension direction of the connector.

[0028] Secondly, embodiments of this application provide an electrical device including the aforementioned battery pack.

[0029] The battery pack and electrical equipment provided in this application include a housing and a lifting lug assembly. The lifting lug assembly is disposed on at least one side of the housing; the lifting lug assembly includes a connector and a lifting member that are connected to each other, the connector is connected to the housing, and the lifting member is disposed on the side of the connector opposite to the housing.

[0030] The battery pack provided in this application embodiment includes a connector for connecting to the housing to improve the connection stability between the lifting lug assembly and the housing. The lifting component is used for subsequent connection to lifting equipment or to electrical equipment. By designing the lifting component and connector as separate parts, the overall structural rigidity and reliability of the lifting lug assembly are ensured. This separate design of the lifting lug assembly can reduce stress concentration by optimizing the connection interface, ensuring uniform stress distribution and thus improving the rigidity of the lifting lug assembly. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0032] Figure 1 A schematic diagram of an embodiment of the battery pack housing and hoisting assembly provided in this application. Figure 1 ;

[0033] Figure 2 A schematic diagram of another embodiment of the battery pack housing and hoisting assembly provided in this application;

[0034] Figure 3 This is a schematic diagram of the structure of the connector of the battery pack provided in the embodiments of this application;

[0035] Figure 4 A schematic diagram of an embodiment of the battery pack housing and hoisting assembly provided in this application. Figure 2 ;

[0036] Figure 5 Schematic diagram of the structure of the battery pack hoisting component provided in the embodiments of this application Figure 1 ;

[0037] Figure 6 Schematic diagram of the structure of the battery pack hoisting component provided in the embodiments of this application Figure 2 ;

[0038] Figure 7 A schematic diagram of the structure of the battery pack hoisting assembly provided in the embodiments of this application. Figure 2 ;

[0039] Figure 8 Schematic diagram of the structure of the battery pack hoisting component provided in the embodiments of this application Figure 3 ;

[0040] Figure 9 Schematic diagram of the structure of the battery pack hoisting component provided in the embodiments of this application Figure 4 .

[0041] Explanation of reference numerals in the attached figures:

[0042] 100: Box body; 110: Base plate;

[0043] 200: Lifting assembly; 210: Connector; 211: Welding hole; 220: Lifting component; 220a: First opening; 220b: Second opening;

[0044] 221: First hoisting section; 222: First segment; 223: Second segment; 224: Third segment; 225: Connecting hole; 226: Second hoisting section; 227: Fourth segment; 228: Fifth segment; 229: Sixth segment;

[0045] 230: Stamping rib structure; 231: Sleeve.

[0046] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0047] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0048] In related technologies, the lifting lugs of a battery pack typically refer to structural components used for handling, installing, or securing the battery pack. The lifting lugs are installed on the outer casing of the battery pack to facilitate handling and installation using lifting equipment or hand tools.

[0049] Lifting lugs provide a convenient gripping and securing point, allowing the battery pack to be safely lifted and moved during production, transportation, and installation. During vehicle assembly, lifting lugs can be used to secure the battery pack to the frame or chassis. They help ensure the battery pack remains stable during vehicle operation and does not shift due to vibration or impact.

[0050] Due to the influence of the battery pack's envelope and the vehicle frame, the cantilever length of the battery pack's lifting lugs often needs to be increased. Here, the cantilever length of the battery pack's lifting lugs refers to the distance the lugs extend outward from the mounting point of the battery pack. This length needs to be carefully considered during the design process to ensure safe and effective use during handling and installation, without causing damage to the battery pack or other components.

[0051] Currently, the lifting lugs are integrated cold-drawn tubes. Cold drawing is a metalworking process that involves stretching metal materials to the desired shape and size at room temperature.

[0052] However, the cold drawing process may introduce residual stresses within the material, which can affect its mechanical properties. The wall thickness and diameter of cold-drawn tubes may be limited by the process, resulting in insufficient stiffness in certain directions.

[0053] Furthermore, cold-drawn tubes in one piece are typically designed to simplify manufacturing processes and reduce costs. However, this integrated design can limit structural optimization in certain situations. For example, the shape and size of the lifting lugs may not be adjustable for specific load conditions, resulting in insufficient stiffness in some directions.

[0054] In summary, the existing battery pack lifting lugs have insufficient rigidity.

[0055] Therefore, embodiments of this application provide a battery pack and an electrical device, the battery pack including a housing and a lifting lug assembly. The lifting lug assembly is disposed on at least one side of the housing; the lifting lug assembly includes a connector and a lifting member connected to each other, the connector is connected to the housing, and the lifting member is disposed on the side of the connector opposite to the housing.

[0056] The battery pack provided in this application embodiment includes a connector for connecting to the housing to improve the connection stability between the lifting lug assembly and the housing. The lifting component is used for subsequent connection to lifting equipment or to electrical equipment. By designing the lifting component and connector as separate parts, the overall structural rigidity and reliability of the lifting lug assembly are ensured. This separate design of the lifting lug assembly can reduce stress concentration by optimizing the connection interface, ensuring uniform stress distribution and thus improving the rigidity of the lifting lug assembly.

[0057] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0058] Firstly, referring to Figure 1 and Figure 2 As shown, this application embodiment provides a battery pack, including:

[0059] Box 100;

[0060] The lifting lug assembly is disposed on at least one side of the housing 100; the lifting lug assembly includes a connector 210 and a lifting member 220 connected to each other, the connector 210 is connected to the housing 100, and the lifting member 220 is disposed on the side of the connector 210 away from the housing 100.

[0061] For example, the battery pack includes battery cells. The housing 100 provides physical protection for the battery cells located in the housing 100 receiving cavity from external impacts, vibrations and other mechanical damage.

[0062] The lifting lug assembly provides a convenient gripping and securing point, allowing the battery pack to be safely lifted and moved by lifting equipment or hand tools. For example, when the battery pack is installed on a vehicle, the lifting lug assembly can be used during vehicle assembly to secure the battery pack to the frame or chassis, ensuring that the battery pack remains stable during vehicle operation and does not shift due to vibration or impact.

[0063] The lifting lug assembly includes a connector 210 and a lifting member 220 that are interconnected. Connector 210 is used to connect to the housing 100 to improve the connection stability between the lifting lug assembly and the housing 100. The connector 210 reduces the possibility of breakage at the connection between the housing 100 and the lifting lug assembly during battery pack vibration. The lifting member 220 is used for subsequent connection to lifting equipment or to electrical equipment.

[0064] By designing the lifting component 220 and the connector 210 as separate units, the overall structural rigidity and reliability of the lifting lug assembly are ensured. This separate design of the lifting lug assembly can reduce stress concentration by optimizing the connection interface, ensuring uniform stress distribution and thus improving the rigidity of the lifting lug assembly.

[0065] Furthermore, this modular design of the lifting lug assembly makes the manufacturing, assembly, and maintenance processes of the lifting lug assembly more flexible, allowing for the individual replacement or repair of a component within the lifting lug assembly, thus reducing production costs and complexity.

[0066] By designing the lifting assembly 200 as a split structure, the rigidity of the lifting lug assembly and the battery pack is increased, preventing damage to the battery pack during lifting and installation and reducing cost waste caused by experimental failures. At the same time, this split design has fewer components, facilitating the assembly, debugging, disassembly, and storage of the rotating assembly.

[0067] For example, the enclosure 100 includes a top plate, side plates, and a bottom plate 110. The top plate and bottom plate 110 are disposed opposite each other along the height direction of the enclosure 100. The side plates are used to connect the top plate and the bottom plate 110. The side plates include a first side plate, a second side plate, a third side plate, and a fourth side plate connected sequentially end-to-end. Lifting lug assemblies may be disposed on the first and third side plates. Lifting lug assemblies may also be disposed on the second and fourth side plates. Alternatively, lifting lug assemblies may be disposed on the first, second, third, and fourth side plates.

[0068] For example, connector 210 is connected to the side plate.

[0069] As one feasible implementation method, refer to Figure 3 As shown, the connector 210 includes a connecting plate and a welding part is provided on the connector 210; the connecting plate is connected to the housing 100 through the welding part.

[0070] There are multiple welded parts, which are arranged in an array along the extension direction of the connector 210.

[0071] In some embodiments, the welding portion on the connecting plate is a welding hole 211, and the connecting plate and the housing 100 are welded together by a plug welding process. The welding hole 211 is used to place solder.

[0072] Plug welding is a welding technique that achieves a connection by filling the holes between overlapping plates with solder. Plug welding can guarantee a strong and reliable connection between the connecting plates and the enclosure.

[0073] The continuous and uniform connection interface between the connecting plate and the housing 100, which are connected by plug welding, reduces loosening and displacement at the connection point and improves the connection stability between the connector 210 and the housing 100.

[0074] Meanwhile, the size and position of the welding hole 211 can be adjusted according to specific application requirements to meet different design requirements and operating conditions.

[0075] In addition, plug welding has good sealing performance, preventing external environmental factors such as moisture and dust from entering the connection area, thereby improving the reliability and durability of the connection between the connecting plate and the housing 100.

[0076] For example, by providing multiple welded sections on the connecting plate, multiple welded sections provide multiple connection points, thereby improving the connection strength between the connecting plate and the housing 100. Simultaneously, multi-point welding and a uniform arrangement of welded sections help optimize load distribution, reduce localized stress concentration, and improve the durability of the connection between the connector 210 and the housing 100. The multi-point welding design improves the fatigue resistance of the connection between the connector 210 and the housing 100, extending its service life.

[0077] In some embodiments, the welded parts are arranged in an array, which further improves the connection stability between the connector 210 and the housing 100 and reduces the loosening or displacement that may occur during operation.

[0078] For example, connector 210 can be a metal patch.

[0079] As one feasible implementation method, refer to Figure 1 and Figure 2 As shown, the lifting component 220 is a welded component; the lifting component 220 includes a first lifting part 221 and a second lifting part 226 that are connected to each other; the first lifting part 221 and the second lifting part 226 are arranged sequentially along the height direction of the box body 100.

[0080] For example, the lifting component 220 is a welded component, and its various parts are joined together by a welding process. Welding provides a continuous metal connection without interruption or gap. This continuity eliminates the gaps and loosening problems of conventional mechanical connections such as bolts or rivets, thereby improving the overall rigidity of the lifting component 220.

[0081] Because welding creates a continuous joint, the load can be distributed more evenly across the entire connection area, reducing stress concentration. This uniform stress distribution helps improve the fatigue resistance and stiffness of the lifting component 220.

[0082] Welding allows for more complex and flexible designs because it is not limited by the shape and size of the mechanical connector 210. This flexibility allows designers to optimize the structural shape to improve rigidity.

[0083] The segmented design of the first lifting section 221 and the second lifting section 226 allows for better distribution and management of loads, especially during the lifting process. This design reduces localized stress and improves overall durability.

[0084] For example, both the first lifting part 221 and the second lifting part 226 are bent parts, which reduces the installation difficulty of the first lifting part 221 and the second lifting part 226.

[0085] As one feasible implementation method, refer to Figure 1 , Figure 4 , Figure 5 As shown, along the height direction of the box 100, the first lifting part 221 is disposed on top of the second lifting part 226.

[0086] The first hoisting unit 221 includes a first section 222, a second section 223, and a third section 224 connected in sequence.

[0087] The first segment 222 is connected to the connector 210, and the first segment 222 extends along the height direction of the box 100.

[0088] The second segment 223 is located on the side of the first segment 222 away from the connector 210, and the second segment 223 is an arc-shaped segment. The second segment 223 is recessed towards the side closer to the housing 100.

[0089] The third segment 224 is located on the side of the second segment 223 away from the first segment 222; the extension direction of the third segment 224 intersects the height direction of the box 100.

[0090] For example, the first segment 222 is directly connected to the connector 210. By extending the first segment 222 parallel to the height direction of the housing 100, the contact area with the connector 210 can be increased. The larger connection area helps to distribute the load and reduce the stress per unit area, thereby improving the strength and stability of the connection between the lifting member 220 and the connector 210. The increased connection area between the lifting member 220 and the connector 210 allows the load to be distributed evenly over a larger area, reducing stress concentration. This uniform load distribution helps to improve the fatigue resistance and overall stiffness of the first lifting section 221.

[0091] The design parallel to the height direction of the housing 100 allows the first section 222 to better withstand loads in the vertical direction, reducing the shaking or loosening of the connector 210 during operation, thereby improving the stability of the connection.

[0092] In this way, by increasing the connection area and optimizing the load path, the stiffness of the first lifting part 221 is enhanced. This enhanced stiffness helps to improve the performance of the lifting component 220 under dynamic loads.

[0093] In addition, by setting the first segment 222, the connection between the first hoisting part 221 and the box 100 is simplified.

[0094] The second segment 223 is an arc-shaped segment. The arc design provides a smooth geometric transition, thus avoiding abrupt shape changes. Sharp geometric changes are often the main cause of stress concentration, while the arc transition can effectively disperse stress and reduce stress concentrations commonly found at right angles or sharp turns. This uniform stress distribution helps improve the fatigue resistance of the first lifting section 221.

[0095] Meanwhile, under dynamic load conditions, the arc-shaped section can more effectively absorb and disperse energy, reducing the impact on the first hoisting part 221, thereby improving the overall stability and safety of the battery pack.

[0096] The third section 224 is used for subsequent connection with hoisting equipment and electrical equipment to reduce possible shaking or loosening during operation.

[0097] The lifting component 220 is designed as a segmented structure consisting of a first segment 222, a second segment 223, and a third segment 224. Each segment can be independently designed and optimized according to its specific functional requirements. For example, the first segment 222 can focus on a stable connection with the connector 210, the second segment 223 can optimize stress distribution, and the third segment 224 can focus on the connection with the lifting equipment.

[0098] The segmented design allows for optimized stress transitions between each segment. The curved design of the second segment 223 effectively reduces stress concentration, while the first segment 222 and the third segment 224 can be optimized to withstand loads in different directions. The segmented design improves the rigidity and stability of the first lifting section 221, ensuring safety under various load conditions.

[0099] For example, the first lifting part 221 is a bent part, which reduces the installation difficulty of the first lifting part 221.

[0100] As one feasible implementation method, refer to Figure 1 , Figure 4 , Figure 6 As shown, the second hoisting section 226 includes a fourth section 227, a fifth section 228, and a sixth section 229 connected in sequence.

[0101] The fourth segment 227 is connected to the connector 210, and the fourth segment 227 extends along the height direction of the housing 100.

[0102] The fifth segment 228 is located on the side of the fourth segment 227 away from the connector 210, and the fifth segment 228 is an arc-shaped segment. The fifth segment 228 is recessed towards the side closer to the housing 100.

[0103] The sixth segment 229 is located on the side of the fifth segment 228 away from the fourth segment 227; the extension direction of the sixth segment 229 intersects the height direction of the box 100.

[0104] For example, if the battery pack uses integrated liquid cooling for heat dissipation, the base plate 110 of the battery pack housing 100 is connected to the liquid cooling plate, and the base plate 110 and the liquid cooling plate are connected by bolts. In this case, to avoid interference between the lifting lug assembly and bolts, the fourth section 227 of the second lifting part 226 is connected to the connector 210.

[0105] The fourth segment 227 is directly connected to the connector 210. By extending the fourth segment 227 parallel to the height of the housing 100, the contact area with the connector 210 can be increased. The larger connection area helps to distribute the load and reduce the stress per unit area, thereby improving the strength and stability of the connection between the lifting component 220 and the connector 210.

[0106] The increased connection area of ​​the lifting component 220 and the connector 210 allows the load to be distributed more evenly over a larger area, reducing stress concentration. This uniform load distribution helps improve the fatigue resistance and overall stiffness of the first lifting component 221.

[0107] The design parallel to the height direction of the housing 100 allows the fourth section 227 to better withstand loads in the vertical direction, reducing the shaking or loosening of the connector 210 during operation, thereby improving the stability of the connection.

[0108] By increasing the connection area and optimizing the load path, the rigidity of the overall second lifting unit 226 is enhanced. This enhanced rigidity helps improve the performance of the lifting component 220 under dynamic loads.

[0109] In addition, by setting the fourth section 227, the connection between the second hoisting part 226 and the box 100 is simplified.

[0110] The fifth segment, 228, is an arc-shaped section. This arc design provides a smooth geometric transition, thus avoiding abrupt shape changes. Sharp geometric changes are often a major cause of stress concentration, while the arc transition effectively disperses stress, reducing stress concentrations commonly found at right angles or sharp turns. This uniform stress distribution helps improve the fatigue resistance of the second lifting section, 226.

[0111] Meanwhile, under dynamic load conditions, the arc-shaped section can more effectively absorb and disperse energy, reducing the impact on the second hoisting part 226, thereby improving the overall stability and safety of the battery pack.

[0112] The sixth section, 229, is used for subsequent connections with hoisting equipment and electrical equipment to reduce possible shaking or loosening during operation.

[0113] The second lifting section 226 is designed as a segmented structure consisting of a fourth segment 227, a fifth segment 228, and a sixth segment 229. Each segment can be independently designed and optimized according to its specific functional requirements. For example, the fourth segment 227 can focus on a stable connection with the connector 210, the fifth segment 228 can optimize stress distribution, and the sixth segment 229 can focus on the connection with the lifting equipment.

[0114] The segmented design of the second hoisting section 226 allows for optimized stress transition between each section. The arc-shaped design of the fifth section 228 effectively reduces stress concentration, while the fourth section 227 and the sixth section 229 can be optimized to withstand loads in different directions. The segmented design improves the overall structural rigidity and stability, ensuring safety under various load conditions.

[0115] As one feasible implementation method, refer to Figure 2 As shown, the housing 100 includes a base plate 110, and the second hoisting part 226 is connected to the base plate 110 at one end near the housing 100.

[0116] For example, when the battery pack uses natural cooling, there is no need to install a liquid cooling plate, and there is no interference problem between the second lifting part 226 and the bolts connecting the liquid cooling plate. The end of the second lifting part 226 near the housing 100 can be directly connected to the base plate 110.

[0117] By directly connecting one end of the second lifting part 226 to the base plate 110, the stability of the second lifting part 226 is significantly improved. The base plate 110, as a robust foundation, effectively supports and distributes the load from the lifting component 220. The base plate 110, with its significant thickness and strength, provides a robust connection interface, thereby improving the overall strength and durability of the connection between the lifting component 220 and the housing 100.

[0118] As one feasible implementation method, refer to Figure 5 As shown, the first hoisting part 221 is provided with a rib structure 230.

[0119] As one feasible implementation method, refer to Figure 7 As shown, the second hoisting part 226 is provided with a rib structure 230.

[0120] For example, a rib is a raised or recessed structure formed on the surface of a material by a stamping process.

[0121] In some embodiments, a rib structure 230 is provided on the first lifting part 221. The rib structure 230 on the first lifting part 221 is a recess that approaches the second lifting part 226.

[0122] By incorporating the rib structure 230, the geometric complexity of the first lifting section 221 is increased, thereby enhancing its structural rigidity. Simultaneously, the rib structure 230 effectively improves the bending resistance of the first lifting section 221, particularly under lateral loads. Furthermore, the rib structure 230 helps distribute stress more evenly within the first lifting section 221, reducing stress concentration. This uniform stress distribution contributes to improved fatigue resistance and service life of the first lifting section 221.

[0123] For example, the third segment 224 is provided with a rib structure 230, which does not increase the overall thickness of the first lifting part 221. In this way, the strength and rigidity are improved without significantly increasing the weight, which helps to achieve a lightweight design.

[0124] In some embodiments, the second lifting section 226 is provided with a rib structure 230. The rib structure 230 on the second lifting section 226 is a recess that approaches the first lifting section 221.

[0125] By incorporating the rib structure 230, the geometric complexity of the second lifting section 226 is increased, thereby enhancing its structural rigidity. Simultaneously, the rib structure 230 effectively improves the bending resistance of the second lifting section 226, particularly under lateral loads. Furthermore, the rib structure 230 helps distribute stress more evenly within the second lifting section 226, reducing stress concentration. This uniform stress distribution contributes to improved fatigue resistance and service life of the second lifting section 226.

[0126] For example, the sixth segment 229 is provided with a rib structure 230, so that without increasing the overall thickness of the second lifting part 226, the strength and rigidity can be improved without significantly increasing the weight, which helps to achieve lightweight design.

[0127] As one feasible implementation method, refer to Figure 4 , Figures 7 to 9 As shown, the battery pack also includes a sleeve 231.

[0128] The first hoisting part 221 has a first opening 220a on the side away from the box body 100, and the second hoisting part 226 has a second opening 220b on the side away from the box body 100; the first opening 220a and the second opening 220b are arranged opposite to each other along the height direction of the box body 100.

[0129] The two ends of the sleeve 231 are respectively provided with a first opening 220a and a second opening 220b.

[0130] Exemplarily, the sleeve 231, by passing through the first opening 220a and the second opening 220b, provides a channel for fasteners to pass through the sleeve 231, thereby securely connecting the electrical device to the battery pack. This design ensures a stable connection between the battery pack and the electrical device. Simultaneously, the first opening 220a and the second opening 220b are positioned opposite each other along the height direction of the housing 100, ensuring precise alignment and positioning of the sleeve 231 and the fasteners, thereby improving the accuracy and reliability of the connection.

[0131] In addition, sleeve 231 not only provides a channel for fasteners, but also helps to effectively transfer and distribute loads from electrical equipment, ensuring that the load is evenly distributed on the battery pack.

[0132] In some embodiments, when connecting the lifting assembly 200 and the housing 100, the connector 210 is first welded to the housing 100 of the battery pack; if the heat dissipation method of the battery pack is liquid cooling integration, the second lifting part 226 is configured as a multi-segment structure including a fourth segment 227, a fifth segment 228, and a sixth segment 229; then, the first lifting part 221, the second lifting part 226, and the sleeve 231 are welded; finally, the fourth segment 227 of the second lifting part 226 is welded to the lower part of the connector 210, and the first segment 222 of the first lifting part 221 is welded to the upper part of the connector 210.

[0133] In other embodiments, when connecting the lifting assembly 200 and the housing 100, the connector 210 is first welded to the housing 100 of the battery pack; if the heat dissipation method of the battery pack is natural cooling, the first lifting part 221, the second lifting part 226 and the sleeve 231 are welded; finally, one end of the second lifting part 226 is welded to the base plate 110, and the first section 222 of the first lifting part 221 is welded to the upper part of the connector 210.

[0134] As one feasible implementation method, refer to Figure 5 , Figure 6 As shown, the first hoisting part 221 is provided with a docking end, which is used to dock with the docking end of external electrical equipment.

[0135] In some embodiments, the first lifting part 221 is provided with a docking hole 225, and correspondingly, the docking end of the external electrical equipment is a docking protrusion. When installing the battery pack, the docking protrusion passes through the docking hole 225 to achieve initial docking between the first lifting part 221 and the docking end of the electrical equipment.

[0136] The design of the mating hole 225 and the mating protrusion ensures the initial connection between the first lifting part 221 and the external electrical equipment. This mechanical connection method provides a simple and effective initial fixation. The initial connection provides a stable mechanical interface, reducing the possibility of misalignment or shaking during subsequent tightening.

[0137] In other embodiments, the second lifting part 226 is provided with a docking protrusion, and correspondingly, the docking end of the external electrical equipment is a docking recess. When the battery pack is installed, the docking protrusion is located in the docking recess to achieve initial docking between the first lifting part 221 and the docking end of the electrical equipment.

[0138] The docking protrusion of the second hoisting section 226 engages with the docking recess of the external electrical equipment, achieving initial mechanical docking. This design provides a simple and effective initial fixation. The initial docking provides a stable connection interface through mechanical means, reducing potential misalignment or shaking during subsequent tightening.

[0139] For example, refer to Figure 4 As shown, there are multiple hoisting assemblies 200, and the multiple hoisting assemblies 200 are along... Figure 4 The spacing is set in the direction indicated by X.

[0140] Secondly, embodiments of this application provide an electrical device including the aforementioned battery pack.

[0141] It is understood that since the electrical equipment of this application adopts the technical solution of the battery pack of the above embodiments, it has at least the beneficial effects brought about by the technical solution of the above embodiments, which will not be described in detail here.

[0142] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0143] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery pack, characterized in that, include: Box (100); A lifting lug assembly is disposed on at least one side of the housing (100); the lifting lug assembly includes a connector (210) and a lifting member (220) connected to each other, the connector (210) is connected to the housing (100), and the lifting member (220) is disposed on the side of the connector (210) opposite to the housing (100).

2. The battery pack according to claim 1, characterized in that, The lifting component (220) is a welded component; the lifting component (220) includes a first lifting part (221) and a second lifting part (226) connected to each other; the first lifting part (221) and the second lifting part (226) are arranged sequentially along the height direction of the box body (100).

3. The battery pack according to claim 2, characterized in that, Along the height direction of the box (100), the first lifting part (221) is disposed on top of the second lifting part (226); The first hoisting part (221) includes a first section (222), a second section (223), and a third section (224) connected in sequence; The first segment (222) is connected to the connector (210), and the first segment (222) extends along the height direction of the housing (100); The second segment (223) is located on the side of the first segment (222) away from the connector (210), and the second segment (223) is an arc-shaped segment; the second segment (223) is recessed towards the side closer to the housing (100); The third segment (224) is located on the side of the second segment (223) away from the first segment (222); the extension direction of the third segment (224) intersects the height direction of the box (100).

4. The battery pack according to claim 3, characterized in that, The second hoisting section (226) includes a fourth section (227), a fifth section (228), and a sixth section (229) connected in sequence; The fourth segment (227) is connected to the connector (210), and the fourth segment (227) extends along the height direction of the housing (100); The fifth segment (228) is located on the side of the fourth segment (227) away from the connector (210), and the fifth segment (228) is an arc-shaped segment; the fifth segment (228) is recessed towards the side closer to the housing (100); The sixth segment (229) is located on the side of the fifth segment (228) away from the fourth segment (227); the extension direction of the sixth segment (229) intersects the height direction of the box (100).

5. The battery pack according to claim 3, characterized in that, The housing (100) includes a base plate (110), and the second hoisting part (226) is connected to the base plate (110) at one end near the housing (100).

6. The battery pack according to any one of claims 2-5, characterized in that, The first hoisting part (221) is provided with a rib structure (230); And / or, the second hoisting part (226) is provided with a rib structure (230).

7. The battery pack according to any one of claims 2-5, characterized in that, It also includes a sleeve (231); The first hoisting part (221) has a first opening (220a) on the side away from the box body (100), and the second hoisting part (226) has a second opening (220b) on the side away from the box body (100); the first opening (220a) and the second opening (220b) are arranged opposite to each other along the height direction of the box body (100); The first opening (220a) and the second opening (220b) are respectively provided at both ends of the sleeve (231).

8. The battery pack according to any one of claims 2-5, characterized in that, The first hoisting part (221) is provided with a docking end, which is used to dock with the docking end of external electrical equipment.

9. The battery pack according to any one of claims 2-5, characterized in that, The connector (210) includes a connecting plate, and a welding part is provided on the connector (210). The connecting plate is connected to the housing (100) through the welding part. The number of welded parts is multiple, and the multiple welded parts are arranged in an array along the extension direction of the connector (210).

10. An electrical appliance, characterized in that, The battery pack includes any one of claims 1-9.

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