A battery pack and battery pack stacking system that are easy to hoist

Abstract

This utility model discloses a battery pack and battery pack stacking system for convenient hoisting, comprising: a battery pack housing with longitudinally arranged side beams at its four corners, each side beam having a longitudinally penetrating through hole, and a transversely arranged limiting hole on the side of each side beam, the limiting hole communicating with the through hole; a lifting rod, detachably installed in the through hole, comprising a lifting ring and a rod body connected to the lifting ring, the rod body having at least one annular limiting boss; and a limiting plate, detachably installed in the limiting hole, one end of which has a limiting groove. When hoisting the battery pack, the limiting groove and the limiting boss of the limiting plate cooperate to limit the weight of the battery pack. The lifting ring is used to connect hoisting tools. This utility model can improve hoisting safety and avoid damage to core components; simplify hoisting operations and reduce reliance on specialized equipment; optimize structural adaptability and enhance overall stability; and balance functionality and lightweight design without adding redundant structures.

Description

Technical Field

[0001] This utility model relates to a battery pack and battery pack stacking system that are easy to hoist, and belongs to the field of power battery technology. Background Technology

[0002] There are two main methods for hoisting conventional battery packs, but both have obvious drawbacks:

[0003] First, using specialized lifting equipment not only increases costs, but also has significant limitations in the market disassembly and repair of battery packs, as these are often located outdoors and lack specialized equipment and personnel.

[0004] Secondly, the battery pack can be hooked to the pre-reserved lifting points on the side of the battery pack enclosure or the threaded lifting holes on the upper part of the side beam. Because the overall weight of the battery pack stacked system is relatively large (e.g., a 4-layer battery pack weighs about 2.8t), directly hooking the hook to the outside of the side beam of the enclosure can easily cause the side beam to deform. In addition, battery packs are mostly made of extruded aluminum or cast aluminum, and the threaded lifting holes use a steel wire bushing structure, which is not only more expensive, but also requires the threads to bear the weight of the entire battery pack or stacked system during lifting, which can easily lead to thread deformation or even breakage. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a battery pack and battery pack stacking system that are easy to hoist.

[0006] To achieve the above objectives, this utility model employs a battery pack that is easy to hoist, comprising:

[0007] The battery pack housing has longitudinally arranged side beams at its four corners, each side beam having a longitudinally penetrating through hole, and a transversely arranged limiting hole on the side of the side beam, the limiting hole communicating with the through hole.

[0008] A lifting rod, detachably installed in the through hole, includes a lifting ring and a rod body connected to the lifting ring, and the rod body is provided with not less than one annular limiting boss;

[0009] The limiting plate is detachably installed in the limiting hole, and one end of it is provided with a limiting groove. When the battery pack is hoisted, the limiting groove of the limiting plate and the limiting boss cooperate to limit the weight of the battery pack. The lifting ring is used to connect the hoisting tool.

[0010] As an improvement, the limiting plate and the limiting hole are fitted with a clearance, and the limiting plate is in the shape of a long strip, with a length greater than the depth of the limiting hole.

[0011] As an improvement, one end of the limiting plate is provided with a mounting hole.

[0012] As an improvement, the limiting groove is semi-circular or arc-shaped, and the size of the limiting groove is larger than the outer diameter of the rod body and smaller than the outer diameter of the limiting boss.

[0013] As an improvement, the bottom of the rod is provided with external threads for connection to the vehicle's underbody bracket.

[0014] As an improvement, the length of the rod is greater than the depth of the through hole on the side beam, and when the rod is inserted into the through hole, the lifting ring protrudes from the top of the side beam.

[0015] As an improvement, the battery pack housing has a square frame structure, and the side beams are provided at the four corners of the housing.

[0016] As an improvement, the side beam is integrally connected to the square frame of the battery pack housing.

[0017] A second aspect of this utility model also provides a battery pack stacking system, comprising multiple battery packs as described above that are easy to hoist, with each battery pack stacked vertically.

[0018] As an improvement, the limiting holes are provided on the same side of the side beam of each battery pack, and adjacent limiting holes are distributed at intervals along the axial direction of the side beam, and the spacing matches the spacing of the upper limit bosses of the rod.

[0019] Compared with the prior art, the battery pack hoisting structure of this utility model has the following advantages:

[0020] (1) Improve lifting safety and avoid damage to core components. The weight of the battery pack is supported by the limiting groove of the limiting plate and the limiting boss of the lifting rod, which changes the traditional method of relying on the thread or the side lifting point of the box to bear the weight. The rigid contact between the limiting boss and the limiting groove can distribute the weight load and avoid thread deformation, breakage or damage to the box side beam due to excessive local stress. It is especially suitable for scenarios with large battery pack weight (such as 2.8t stacked battery packs).

[0021] (2) Simplified hoisting operation and reduced reliance on specialized equipment. The lifting rod and limiting plate of this invention are both detachable, requiring no special tooling: during hoisting, assembly is completed simply by inserting the screw rod into the through hole of the side beam and the limiting plate into the limiting hole. The operation is simple and suitable for outdoor maintenance and other scenarios lacking specialized equipment. Furthermore, the lifting ring is directly used to connect to the hook or straps, eliminating the need for specialized hoisting tools.

[0022] (3) Optimize structural adaptability and enhance overall stability. The side beams at the four corners of the battery pack form a symmetrical force-bearing structure, with the weight evenly distributed among the four lifting points, avoiding battery pack tilting or structural deformation caused by single-point force. The longitudinal through holes and transverse limiting holes of the side beams are designed to ensure precise and stable cooperation between the screw and the limiting plate, reducing the risk of swaying during lifting.

[0023] (4) Balancing functionality and lightweight design without adding redundant structures. The side beams integrate the through holes and limiting holes required for hoisting, eliminating the need for additional welding or installation of hoisting components on the battery pack housing, thus avoiding structural redundancy. At the same time, the detachable screws and limiting plates can be removed when not in a hoisting state, without affecting the normal installation and use of the battery pack, thus balancing hoisting functionality with the simplicity of the overall structure. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the installation of the limiting plate of this utility model on the box body;

[0027] Figure 3 This is a schematic diagram of the assembly structure of the limiting plate of this utility model on the box body;

[0028] Figure 4 This is a schematic diagram of the structure of the limiting plate of this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the lifting rod of this utility model;

[0030] In the diagram: 1. Battery pack housing, 2. Side beam, 21. Limiting hole, 3. Lifting rod, 31. Lifting ring, 32. Rod body, 33. Limiting boss, 34. External thread, 4. Limiting plate, 41. Limiting groove, 42. Mounting hole, 5. Strap. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this application will be described in detail below through specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0032] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only used to facilitate the description of this utility model and to simplify 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 limiting the scope of protection of this utility model.

[0033] like Figures 1-5 As shown, a battery pack that is easy to hoist includes a battery pack housing 1, a hoisting rod 3, and a limiting plate 4;

[0034] The battery pack housing 1 has longitudinally arranged side beams 2 at its four corners. The side beams 2 strengthen the structural strength of the battery pack corners, providing a stable support foundation for hoisting and dispersing the gravity during hoisting to prevent deformation of the battery pack body. The side beams 2 have longitudinally penetrating through holes, providing an installation channel for the lifting rods 3, ensuring accurate axial positioning of the lifting rods 3. The through holes are integrated with the side beams 2, improving load-bearing stability. The side of the side beams 2 has transversely arranged limiting holes 21, which are connected to the through holes. The limiting holes 21 provide installation space for the limiting plate 4, enabling the limiting plate 4 and the lifting rod 3 to cooperate laterally and form a force-bearing support point.

[0035] The lifting rod 3 is detachably installed in the through hole and can be removed after hoisting without affecting the normal use of the battery pack. It does not require special tools and is convenient for outdoor maintenance and other scenarios. The lifting rod 3 includes a lifting ring 31 and a rod body 32 connected to the lifting ring 31. The lifting hook or strap 5 is directly connected through the lifting ring 31, eliminating the need for special hoisting tools and simplifying the hoisting connection steps. The rod body 32 is provided with at least one annular limiting boss 33. The limiting boss 33 cooperates with the limiting groove 41 of the limiting plate 4 to transfer the weight of the battery pack to the limiting boss 33 and the limiting plate 4, avoiding direct stress on the threads or side beams and preventing deformation and breakage.

[0036] The limiting plate 4 is detachably installed in the limiting hole 21, and is only installed during hoisting, without occupying extra space, facilitating quick assembly and disassembly, and reducing operational difficulty. One end of the limiting plate 4 is provided with a limiting groove 41, which precisely engages with the limiting boss 33 to form a stable mechanical limit, ensuring reliable gravity transmission during hoisting. When hoisting the battery pack, the limiting groove 41 and the limiting boss 33 of the limiting plate 4 cooperate to limit and bear the weight of the battery pack, and the lifting ring 31 is used to connect the hoisting tools.

[0037] In some embodiments, such as Figure 2 , Figure 3As shown, the limiting plate 4 and the limiting hole 21 are fitted with a clearance, which facilitates the quick installation and disassembly of the limiting plate 4, reduces the difficulty of operation, and improves the efficiency of hoisting preparation or storage. The limiting plate 4 is in the shape of a long strip, which can enhance its own strength and stably bear the hoisting weight. At the same time, the length of the limiting plate 4 is greater than the depth of the limiting hole 21, which makes it easy to hold and operate, improves the convenience of loading and unloading, and can serve as a visual marker that the installation is in place.

[0038] In some embodiments, such as Figure 4 As shown, one end of the limiting plate 4 is provided with a mounting hole 42, which is used to place the limiting plate 4 in the vehicle's toolbox when the battery pack is in normal use, or to fix it to the battery pack with bolts through the mounting hole 42; the limiting groove 41 is semi-circular or arc-shaped, which is adapted to the cylindrical surface of the rod 32, and can wrap the rod 32 more closely. The size of the limiting groove 41 is larger than the outer diameter of the rod 32 to avoid interference between the limiting groove 41 and the rod 32, and to ensure that the lifting rod 3 can be smoothly installed and adjusted in the through hole. At the same time, the size of the limiting groove 41 is smaller than the outer diameter of the limiting boss 33, which can effectively engage with the limiting boss 33, reliably bear the weight of the battery pack, ensure the stability of the force during hoisting, and prevent the lifting rod 3 from slipping.

[0039] In some embodiments, such as Figure 5 As shown, the bottom of the rod 32 is provided with an external thread 34. When the battery pack is in normal use, the rod 32 forms a threaded connection with the vehicle's bottom bracket through the external thread 34, which is stable and reliable, effectively withstanding vibrations and impacts during vehicle operation, ensuring the battery pack is securely installed. At the same time, the threaded connection facilitates later disassembly and maintenance, improving operational convenience. This utility model uses the external thread 34 to enable the lifting rod 3 to perform both lifting and fixing functions, eliminating the need for additional dedicated fixing components, simplifying the overall structure of the battery pack, and reducing costs.

[0040] In some embodiments, such as Figure 1 As shown, the length of the rod body 32 of the lifting rod 3 is greater than the depth of the through hole on the side beam 2, ensuring that the lifting rod 3 can completely pass through the through hole, and the bottom external thread can be smoothly connected and fixed to the vehicle bracket. At the same time, the top lifting ring 31 can protrude from the top of the side beam 2 to meet the lifting requirements and take into account both fixing and lifting functions.

[0041] In some embodiments, such as Figure 1 As shown, the battery pack housing 1 has a square frame structure, which is easy to adapt to the vehicle installation space. The frame design reduces the overall weight while ensuring structural strength, which meets the requirements of lightweighting. The four corners of the housing are provided with the side beams 2, which are integrally connected with the square frame of the housing, improving the overall structure and stability.

[0042] In a second aspect, this utility model also provides a battery pack stacking system, comprising a plurality of the aforementioned convenient-to-lift battery packs, wherein each battery pack is stacked vertically.

[0043] like Figure 1 , Figure 2 As shown, each battery pack's side beam 2 has a limiting hole 21 on the same side. Adjacent limiting holes 21 are spaced apart along the axial direction of the side beam 2, and the spacing matches the spacing of the upper limiting bosses 33 on the rod body 32. By cooperating with multiple limiting holes 21 and limiting bosses 33, different installation positions can be selected to adapt to hoisting equipment of different heights or to adjust the center of gravity of the battery pack, improving operational flexibility. In addition, during hoisting, multiple limiting plates 4 can be used simultaneously to cooperate with the limiting bosses 33, distributing the weight to multiple positions on the side beam 2, reducing single-point stress, and avoiding structural deformation.

[0044] In practical use, insert the rod 3 vertically through the through hole at the top of the side beam 2, so that the rod body 32 completely penetrates the through hole until the top lifting ring 31 is 5-10cm higher than the top surface of the side beam 2 (to facilitate subsequent hooking operation), and the limiting boss 33 on the rod body 32 is slightly lower than the height of the limiting hole 21 on the side of the battery pack.

[0045] Then, hold the exposed end of the limiting plate 4 (slightly longer than the depth of the limiting hole 21) and insert it horizontally into the limiting hole 21 reserved on the side of the battery pack. During the pushing process, ensure that the limiting groove 41 of the limiting plate 4 contacts the annular outer circle of the rod 32 and forms a locking limit with the limiting boss 33.

[0046] After confirming that the limiting plate 4 is inserted in place (which can be judged by the exposed length of the limiting plate 4), pass the hook or strap 5 through the lifting ring 31 and lock it. At this time, lift slowly: the limiting boss 33 of the lifting rod 3 bears the entire weight of the battery pack through rigid contact with the upper limiting groove 41 of the limiting plate 4. The weight is transferred to the surrounding structure of the limiting hole 21 on the side of the battery pack through the limiting plate 4, and then distributed to the overall frame by the side beam 2 of the battery pack, so as to avoid excessive stress on a single point.

[0047] During the lifting process, the axial movement of the lifting rod 3 is restricted by the cooperation between the limiting boss 33 and the limiting groove 41, and the clearance between the limiting plate 4 and the limiting hole 21 only leaves a small adjustment space, which can ensure that the battery pack maintains a horizontal posture without the risk of shaking or tilting until it is lifted to the target position.

[0048] The above descriptions are merely embodiments of this utility model, and common technical solutions and / or characteristics known in the scheme are not described in detail here. It should be noted that those skilled in the art can make various modifications, improvements, or equivalent substitutions without departing from the technical solution of this utility model, and all such modifications, improvements, or equivalent substitutions should be covered within the scope of the claims of this utility model. The scope of protection claimed in this application should be determined by the content of its claims, and the detailed descriptions of the embodiments can be used to interpret the content of the claims.

Claims

1. A battery pack that is easy to hoist, characterized in that, include: The battery pack housing (1) has longitudinally arranged side beams (2) at its four corners. The side beams (2) have longitudinally penetrating through holes, and the side of the side beams (2) has transversely arranged limiting holes (21) that are connected to the through holes. The lifting rod (3) is detachably installed in the through hole. It includes a lifting ring (31) and a rod body (32) connected to the lifting ring (31). The rod body (32) is provided with at least one annular limiting boss (33). The limiting plate (4) is detachably installed in the limiting hole (21). One end of the plate has a limiting groove (41). When the battery pack is hoisted, the limiting groove (41) of the limiting plate (4) and the limiting boss (33) cooperate to limit the weight of the battery pack. The lifting ring (31) is used to connect the hoisting tool.

2. The battery pack for easy hoisting according to claim 1, characterized in that, The limiting plate (4) and the limiting hole (21) are fitted with a clearance. The limiting plate (4) is in the shape of a long strip and its length is greater than the depth of the limiting hole (21).

3. The battery pack for easy hoisting according to claim 1, characterized in that, The limiting plate (4) has a mounting hole (42) at one end.

4. A battery pack for easy hoisting according to claim 1, characterized in that, The limiting groove (41) is semi-circular or arc-shaped. The size of the limiting groove (41) is larger than the outer diameter of the rod (32) and smaller than the outer diameter of the limiting boss (33).

5. A battery pack for easy hoisting according to claim 1, characterized in that, The bottom of the rod (32) is provided with an external thread (34) for connecting to the vehicle's bottom bracket.

6. A battery pack for easy hoisting according to claim 1, characterized in that, The length of the rod (32) of the rod (3) is greater than the depth of the through hole on the side beam (2). When the rod (3) is inserted into the through hole, the lifting ring (31) protrudes from the top of the side beam (2).

7. A battery pack for easy hoisting according to claim 1, characterized in that, The battery pack housing (1) has a square frame structure, and the side beams (2) are provided at the four corners of the housing.

8. A battery pack for easy hoisting according to claim 7, characterized in that, The side beam (2) is integrally connected to the square frame of the battery pack box (1).

9. A battery pack stacking system, characterized in that, It includes multiple battery packs that are easy to hoist as described in any one of claims 1-8, with each battery pack arranged in a stacked manner.

10. A battery pack stacking system according to claim 9, characterized in that, Each battery pack has a limiting hole (21) on the same side of the side beam (2), and adjacent limiting holes (21) are distributed at intervals along the axial direction of the side beam (2), and the spacing matches the spacing of the upper limit boss (33) on the rod (32).

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