Battery pack locking device

Abstract

The utility model provides a battery pack locking device. The battery pack locking device comprises a frame-shaped assembly which is provided with a clamping space for clamping a battery pack, and the size of the clamping space is adjustable; the locking mechanism is arranged on the frame-shaped assembly, the locking mechanism is provided with a locking position for locking the frame-shaped assembly, and the locking mechanism is provided with an unlocking position for releasing, so that the problem that the fixation is not tight or too loose due to the tolerance of the size of a battery cell or the tolerance of the size of auxiliary materials such as foam and the like in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery pack locking device. Background Technology

[0002] In the field of industrial energy storage / power battery PACK technology, especially in energy storage, battery PACKs often use steel strips and aluminum end plates (where the steel strips are pre-welded to the battery PACK dimensions upon arrival, or sometimes the incoming material is a single steel strip, which is then welded according to the actual on-site sample). This often presents a problem: due to tolerances in cell dimensions or other related components (such as aluminum end plates), the steel strips are either too tight for assembly or too loose. Adopting a method of tightening and welding according to the actual on-site sample increases costs, efficiency, and equipment requirements. Furthermore, this method only applies force to two sides (the end plate sides) of the cells for fixation. After spot welding the aluminum cell busbars, there is a risk of loosening when lifting and placing them into the battery box. Utility Model Content

[0003] The main purpose of this utility model is to provide a battery pack locking device to solve the problem in the prior art that the battery pack is not locked tightly or is too loose due to the tolerance of the size of the battery cell or the size of auxiliary materials such as foam.

[0004] To achieve the above objectives, according to one aspect of the present invention, a battery pack locking device is provided. The battery pack locking device includes: a frame-shaped assembly having a clamping space for clamping the battery pack, the size of which is adjustable; and a locking mechanism disposed on the frame-shaped assembly, having a locking position for locking the frame-shaped assembly and an unlocking position for releasing.

[0005] Furthermore, the frame assembly includes at least four end plates, which enclose a clamping space. Adjacent end plates are movably connected by a locking mechanism, which is operated to switch the frame assembly between a locked position and an unlocked position.

[0006] Furthermore, at least four locking mechanisms are provided, each located at the angle between two adjacent end plates.

[0007] Furthermore, at least four locking mechanisms include a first locking mechanism, a second locking mechanism, a third locking mechanism, and a fourth locking mechanism, and at least four end plates include: a front end plate, which is disposed along the width direction of the battery pack and is connected to the battery pack via a connecting piece structure; a rear end plate, which is disposed opposite to the front end plate; a left end plate, which is disposed along the length direction of the battery pack, with one end of the left end plate movably connected to the front end plate via the first locking mechanism and the other end of the left end plate movably connected to the rear end plate via the second locking mechanism; and a right end plate, which is disposed opposite to the left end plate, with one end of the right end plate movably connected to the front end plate via the third locking mechanism and the other end of the right end plate movably connected to the rear end plate via the fourth locking mechanism.

[0008] Furthermore, the first locking mechanism includes: a first adjusting plate connected to the front end plate; and a first threaded adjusting member that passes through the first adjusting plate and the front end plate and is disposed in contact with the left end plate, with one end of the first threaded adjusting member being able to be connected to the first fixing member on the left end plate.

[0009] Furthermore, the second locking mechanism includes: a second adjusting plate, which is connected to the rear end plate; and a second threaded adjusting member, which is disposed through the second adjusting plate and the rear end plate and in contact with the left end plate, one end of which is connected to a second fixing member on the left end plate.

[0010] Furthermore, the third locking mechanism includes: a third adjusting plate, which is connected to the front end plate; and a third threaded adjusting member, which is disposed through the third adjusting plate and the front end plate and in contact with the right end plate, one end of which is connected to the third fixing member on the right end plate.

[0011] Furthermore, the fourth locking mechanism includes: a fourth adjusting plate, which is connected to the rear end plate; and a fourth threaded adjusting member, which is disposed through the fourth adjusting plate and the rear end plate and in contact with the right end plate, with one end of the fourth threaded adjusting member being able to be connected to the fourth fixing member on the right end plate.

[0012] Furthermore, each end plate has an edge at both ends, which is set along the height direction of the end plate.

[0013] Furthermore, a first through hole is provided on the edge connected to the front end plate, and a first long screw is provided inside the first through hole; a second through hole is provided on the edge connected to the rear end plate, and a second long screw is provided inside the second through hole.

[0014] By applying the technical solution of this utility model, an adjustable clamping space is formed by a frame-shaped component. This device can adapt to battery packs of different sizes and tolerances, thereby improving versatility and flexibility. It avoids problems of loose or insufficient fixing caused by differences in cell size or auxiliary materials. The design of the locking mechanism ensures that the frame-shaped component can switch between locked and unlocked states. When the device is in the locked position, the battery pack is firmly clamped in the clamping space with balanced force on all four sides. This not only solves the risk of loosening and aluminum busbar breakage that may occur when the battery pack is directly suspended, but also simplifies the battery pack assembly and disassembly process and improves production efficiency. When it is necessary to release the battery pack, the locking mechanism can be adjusted to the unlocked position for easy removal and replacement of the battery pack. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of a first embodiment of the battery pack locking device according to the present invention is shown;

[0017] Figure 2 A schematic diagram of the structure of a second embodiment of the battery pack locking device according to the present invention is shown;

[0018] Figure 3 A schematic diagram of a third embodiment of the battery pack locking device according to the present invention is shown.

[0019] The above figures include the following reference numerals:

[0020] 10. Frame-shaped components;

[0021] 11. Front end plate; 12. Rear end plate; 13. Left end plate; 14. Right end plate; 15. Edge; 16. First long screw; 17. Second long screw;

[0022] 20. Locking mechanism;

[0023] 21. First locking mechanism; 211. First adjusting plate; 212. First threaded adjusting component;

[0024] 22. Second locking mechanism; 221. Second adjusting plate; 222. Second threaded adjusting component;

[0025] 23. Third locking mechanism; 231. Third adjusting plate; 232. Third threaded adjusting component;

[0026] 24. Fourth locking mechanism; 241. Fourth adjusting plate; 242. Fourth threaded adjusting component. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0031] Combination Figures 1 to 3 As shown, according to a specific embodiment of the present invention, a battery pack locking device is provided.

[0032] Specifically, such as Figure 1 , Figure 2As shown, the battery pack locking device includes: a frame assembly 10 having a clamping space for holding the battery pack 100, the size of which is adjustable; and a locking mechanism 20 disposed on the frame assembly 10, having a locking position for locking the frame assembly 10 and an unlocking position for releasing.

[0033] In this embodiment, the frame component 10 forms an adjustable clamping space, which can adapt to battery packs 100 of different sizes and tolerances, thus improving versatility and flexibility. It avoids problems of loose or insufficient fixing caused by differences in cell size or auxiliary materials. The design of the locking mechanism 20 ensures that the frame component 10 can switch between locked and unlocked states. When the device is in the locked position, the battery pack 100 is firmly clamped in the clamping space with balanced force on all four sides. This not only solves the risk of loosening and aluminum strip breakage that may occur when the battery pack is directly suspended, but also simplifies the battery pack assembly and disassembly process and improves production efficiency. When it is necessary to release the battery pack 100, the locking mechanism 20 can be adjusted to the unlocked position to facilitate the removal and replacement of the battery pack 100.

[0034] Furthermore, the frame assembly 10 includes at least four end plates, which surround a clamping space. Adjacent end plates are movably connected by a locking mechanism 20. By operating the locking mechanism 20, the frame assembly 10 can be switched between a locked position and an unlocked position.

[0035] Specifically, when the locking mechanism 20 is engaged in the locked position, the connection between the end plates becomes secure, and the clamping space stably fixes the battery pack, ensuring the safety and stability of the battery pack under various operating conditions. Especially during the handling and assembly of the battery pack, it prevents displacement or damage to internal components caused by vibration or impact. When the locking mechanism 20 is adjusted to the unlocked position, the connection between the end plates becomes loose, allowing for dimensional adjustment of the frame assembly 10, facilitating quick installation and removal of the battery pack.

[0036] Furthermore, at least four locking mechanisms 20 are provided, each positioned at the included angle between two adjacent end plates. This arrangement enhances the structural strength of the frame assembly and the structural stability of the battery pack.

[0037] like Figure 2 , Figure 3As shown, at least four locking mechanisms 20 include a first locking mechanism 21, a second locking mechanism 22, a third locking mechanism 23, and a fourth locking mechanism 24. At least four end plates include: a front end plate 11, which is arranged along the width direction of the battery pack 100 and is connected to the battery pack 100 via a connecting piece structure 111; a rear end plate 12, which is arranged opposite to the front end plate 11; a left end plate 13, which is arranged along the length direction of the battery pack 100, with one end of the left end plate 13 movably connected to the front end plate 11 via the first locking mechanism 21 and the other end of the left end plate 13 movably connected to the rear end plate 12 via the second locking mechanism 22; and a right end plate 14, which is arranged opposite to the left end plate 13, with one end of the right end plate 14 movably connected to the front end plate 11 via the third locking mechanism 23 and the other end of the right end plate 14 movably connected to the rear end plate 12 via the fourth locking mechanism 24.

[0038] Specifically, by setting locking mechanisms at each key connection point of the frame assembly (i.e., the connection between the front end plate 11 and the left end plate 13 and the right end plate 14, and the connection between the rear end plate 12 and the left end plate 13 and the right end plate 14), the battery pack is secured in both the width and length directions. Even when there are tolerances in the size of the battery pack, the battery pack can be precisely fixed by adjusting the locking mechanisms, effectively preventing problems of loose or insufficient fixation due to size differences.

[0039] Furthermore, the first locking mechanism 21 includes: a first adjusting plate 211, which is connected to the front end plate 11; and a first threaded adjusting member 212, which is disposed through the first adjusting plate 211 and the front end plate 11 and in contact with the left end plate 13, with one end of the first threaded adjusting member 212 being able to be connected to the first fixing member on the left end plate 13.

[0040] In this embodiment, the first threaded adjusting member 212 is a screw or a threaded rod, and the first fixing member is a nut, wherein the first fixing member is welded to the left end plate 13.

[0041] Furthermore, the second locking mechanism 22 includes: a second adjusting plate 221, which is connected to the rear end plate 12; and a second threaded adjusting member 222, which is disposed through the second adjusting plate 221 and the rear end plate 12 and in contact with the left end plate 13, with one end of the second threaded adjusting member 222 being able to be connected to a second fixing member on the left end plate 13.

[0042] In this embodiment, the second threaded adjusting member 222 is a screw or threaded rod, and the second fixing member is a nut. The second fixing member is welded to the left end plate 13. The second fixing member and the first fixing member are arranged opposite to each other.

[0043] Furthermore, the third locking mechanism 23 includes: a third adjusting plate 231, which is connected to the front end plate 11; and a third threaded adjusting member 232, which is disposed through the third adjusting plate 231 and the front end plate 11 and in contact with the right end plate 14, with one end of the third threaded adjusting member 232 being able to be connected to the third fixing member on the right end plate 14.

[0044] In this embodiment, the third threaded adjustment component 232 is a screw or threaded rod, and the third fixing component is a nut. The third fixing component is welded to the right end plate 14.

[0045] Furthermore, the fourth locking mechanism 24 includes: a fourth adjusting plate 241, which is connected to the rear end plate 12; and a fourth threaded adjusting member 242, which is disposed through the fourth adjusting plate 241 and the rear end plate 12 and in contact with the right end plate 14, with one end of the fourth threaded adjusting member 242 being able to be connected to the fourth fixing member on the right end plate 14.

[0046] In this embodiment, the fourth threaded adjusting member 242 is a screw or threaded rod, and the fourth fixing member is a nut, wherein the fourth fixing member is welded to the right end plate 14. The third fixing member and the fourth fixing member are arranged opposite to each other.

[0047] By fitting the battery pack locking device onto the battery pack 100, and simultaneously locking the first threaded adjusting member 212 with the first fixing member, the second threaded adjusting member 222 with the second fixing member, the third threaded adjusting member 232 with the third fixing member, and the fourth threaded adjusting member 242 with the fourth fixing member, the front end plate 11 and the rear end plate 12 move closer to each other, while the left end plate 13 and the right end plate 14 also move closer to each other, thus achieving the effect of tightening the four sides of the battery pack.

[0048] Furthermore, each end plate has an edge 15 at both ends, which is set along the height direction of the end plate. When it is necessary to hoist the device into the battery box, the edge 15 on the left end plate 13 and the right end plate 14 can be used for hoisting.

[0049] Furthermore, a first through hole is provided on the edge 15 connected to the front end plate 11, and a first long screw 16 is provided inside the first through hole. A second through hole is provided on the edge 15 connected to the rear end plate 12, and a second long screw 17 is provided inside the second through hole. When hoisting the battery pack, the connection between the long screw and the end plate provides a more solid support point for the edge 15, reducing displacement or damage to the end plate caused by hoisting and ensuring the stability and safety of the battery pack during the hoisting process.

[0050] In another embodiment of this application, after the entire battery pack locking device is fitted onto the battery pack, tightening the front and rear screws not only clamps the battery pack in the direction indicated by the black arrow, but also, due to the eccentric effect of the adjusting plate, screws, front end plate 11, rear end plate 12, left end plate 13, and right end plate 14, simultaneously generates two forces on the left end plate 13 and right end plate 14, as indicated by the gray arrows, thus clamping the battery pack on all four sides. When it is necessary to hoist the device into the battery box, the edges 15 on the left end plate 13 and right end plate 14 can be used for hoisting.

[0051] In practical design and application, considering various auxiliary materials in the battery compartment, such as EVA foam, the left end plate 13 and right end plate 14 need to be 4-7mm shorter than the length of the battery pack. Simultaneously, the distance between the second nut and the first nut on the left end plate 13 and right end plate 14 directly affects the length of the threaded adjustment component; therefore, a distance of 50-80mm between the two screws is preferable. Furthermore, the eccentricity of the core component, the tension adjustment plate, should be 2-3mm off-center from the center of the nut holes (nuts) on the front and rear end plates.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0054] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack locking device, characterized in that, include: A frame assembly (10) having a clamping space for clamping a battery pack (100), the size of which is adjustable; A locking mechanism (20) is disposed on the frame assembly (10), the locking mechanism (20) having a locking position for locking the frame assembly (10) and an unlocking position for releasing.

2. The battery pack locking device according to claim 1, characterized in that, The frame assembly (10) includes at least four end plates, which surround the clamping space. Two adjacent end plates are movably connected by the locking mechanism (20). By operating the locking mechanism (20), the frame assembly (10) switches between the locked position and the unlocked position.

3. The battery pack locking device according to claim 2, characterized in that, The locking mechanism (20) is configured to be at least four, and each locking mechanism (20) is located at the included angle of the two adjacent end plates.

4. The battery pack locking device according to claim 3, characterized in that, At least four of the locking mechanisms (20) include a first locking mechanism (21), a second locking mechanism (22), a third locking mechanism (23), and a fourth locking mechanism (24), and at least four of the end plates include: A front end plate (11) is provided along the width direction of the battery pack (100), and the front end plate (11) is connected to the battery pack (100) through a connecting piece structure (111); A rear end plate (12) is disposed opposite to the front end plate (11); Left end plate (13), the left end plate (13) is arranged along the length direction of the battery pack (100), one end of the left end plate (13) is movably connected to the front end plate (11) through the first locking mechanism (21), and the other end of the left end plate (13) is movably connected to the rear end plate (12) through the second locking mechanism (22); The right end plate (14) is disposed opposite to the left end plate (13). One end of the right end plate (14) is movably connected to the front end plate (11) through the third locking mechanism (23), and the other end of the right end plate (14) is movably connected to the rear end plate (12) through the fourth locking mechanism (24).

5. The battery pack locking device according to claim 4, characterized in that, First locking mechanism (21): The first adjusting plate (211) is connected to the front end plate (11); A first threaded adjusting member (212) is provided that can pass through the first adjusting plate (211) and the front end plate (11) and is in contact with the left end plate (13). One end of the first threaded adjusting member (212) is connected to a first fixing member on the left end plate (13) in a cooperative manner.

6. The battery pack locking device according to claim 4, characterized in that, The second locking mechanism (22) includes: The second adjusting plate (221) is connected to the rear end plate (12); The second threaded adjustment member (222) is disposed through the second adjustment plate (221) and the rear end plate (12) and in contact with the left end plate (13). One end of the second threaded adjustment member (222) is connected to the second fixing member on the left end plate (13) in a cooperative manner.

7. The battery pack locking device according to claim 4, characterized in that, The third locking mechanism (23) includes: The third adjustment plate (231) is connected to the front end plate (11); The third threaded adjustment member (232) is disposed through the third adjustment plate (231) and the front end plate (11) and in contact with the right end plate (14). One end of the third threaded adjustment member (232) is connected to the third fixing member on the right end plate (14) in a cooperative manner.

8. The battery pack locking device according to claim 4, characterized in that, The fourth locking mechanism (24) includes: The fourth adjusting plate (241) is connected to the rear end plate (12); The fourth threaded adjusting member (242) is disposed through the fourth adjusting plate (241) and the rear end plate (12) and in contact with the right end plate (14). One end of the fourth threaded adjusting member (242) is connected to the fourth fixing member on the right end plate (14) in a cooperative manner.

9. The battery pack locking device according to claim 4, characterized in that, Each end plate has an edge (15) at both ends, and the edge (15) is arranged along the height direction of the end plate.

10. The battery pack locking device according to claim 9, characterized in that, A first through hole is provided on the edge (15) connected to the front end plate (11), and a first long screw (16) is provided inside the first through hole. A second through hole is provided on the edge (15) connected to the rear end plate (12), and a second long screw (17) is provided inside the second through hole.

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