Screw tightening device of battery module and battery pack production line

Abstract

The utility model belongs to the technical field of batteries, and discloses a screw tightening device of a battery module and a battery pack production line. The screw tightening device of the battery module comprises a fixing part, a driving assembly, an adjusting frame and at least two tightening guns, wherein the driving assembly is connected to the fixing part; the adjusting frame is connected with the output end of the driving assembly, and the driving assembly can drive the adjusting frame to move in the vertical direction. The at least two tightening guns are connected to the adjusting frame, the position of each tightening gun in the first direction and the second direction is adjustable, and the tightening guns are arranged corresponding to screw positions of the battery module. According to the screw tightening device of the battery module and the battery pack production line, screws can be quickly and simultaneously mounted at the four corners of the battery module, and the screw tightening device can adapt to battery modules of different sizes.

Description

Screw tightening device for battery modules and battery pack production line Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a screw tightening device for a battery module and a battery pack production line. Background Technology

[0002] A battery module consists of several battery cells. During use, the battery module, along with the battery management system and thermal management system, is installed inside a casing to form a battery pack. During battery pack assembly, screws are installed one by one at each end of the battery module using a screw-tightening device, connecting the battery module to the chassis of the casing via screws. However, this method requires the screw-tightening device to be constantly repositioned to install screws on multiple parts of the battery module, resulting in low efficiency.

[0003] Therefore, there is an urgent need to design a screw tightening device for battery modules and a battery pack production line to solve the above problems. Summary of the Invention

[0004] One objective of this invention is to provide a screw tightening device for battery modules, which can quickly install screws at all four corners of the battery module simultaneously and is adaptable to battery modules of different sizes.

[0005] Another objective of this invention is to provide a battery pack production line that can shorten the battery pack assembly time and can adapt to battery modules of different sizes to form battery packs.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The screw tightening device for the battery module includes:

[0008] A fixing element and a drive assembly, wherein the drive assembly is connected to the fixing element;

[0009] An adjustment frame is connected to the output end of the aforementioned drive component, which can drive the adjustment frame to move in the vertical direction.

[0010] At least two tightening guns are connected to the aforementioned adjustment frame. The position of each tightening gun is adjustable in the first and second directions. The tightening guns correspond to the screw positions of the battery module. The first direction, the second direction, and the vertical direction are perpendicular to each other.

[0011] As an optional approach, the aforementioned regulatory framework includes:

[0012] A first connector extends along the first direction and is connected to the output end of the drive assembly.

[0013] The first and second borders are connected and alternately enclosed. The first border extends along the second direction, and the second border extends along the first direction. One of the first and second borders is connected to the first connector and its position is adjustable perpendicular to its own extension direction. The other border is provided with the tightening gun, and the position of the tightening gun is adjustable.

[0014] As an optional solution, a plurality of first connecting structures are provided at intervals on the first frame, and second connecting structures are provided at both ends of the second frame; the second connecting structures can be selectively fixed to any of the first connecting structures of the corresponding first frame; or the second connecting structures can be selectively aligned with any of the first connecting structures of the corresponding first frame and connected by a first locking member.

[0015] As an alternative, the second frame is provided with a plurality of third connecting structures at intervals in the first direction. The tightening gun is connected to the second frame through a second connector. A fourth connecting structure is provided on the second connector. The fourth connecting structure can be selectively fixed to any of the third connecting structures of the second frame.

[0016] As an alternative, in the second direction, the end of the second frame slides into the corresponding first frame and can be locked by a third locking member; and / or

[0017] The tightening gun is connected to the second frame via the second connector. The second connector slides with the second frame and can be locked by the fourth locking member.

[0018] As an optional solution, the second connector mentioned above includes:

[0019] The slider slides in conjunction with the second frame, and a fixing hole is provided on the side of the slider. The fourth locking member is installed in the fixing hole and can abut against the second frame.

[0020] The carrier is connected to the slider, and each of the carriers is equipped with a tightening gun.

[0021] As an optional solution, the fourth locking element is a screw, which is threaded into the fixing hole; or

[0022] The fourth locking component is a ball screw, which is threadedly connected to the fixing hole.

[0023] As an alternative, the aforementioned drive assembly includes at least two drive components, and both of the aforementioned drive components are connected to the aforementioned fixing component.

[0024] As an alternative, scales are provided on both of the aforementioned first borders and both of the aforementioned second borders.

[0025] The battery pack production line includes the aforementioned screw tightening device for the battery modules.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model provides a screw tightening device for battery modules. By setting up a drive assembly, the output end of the adjusting frame is connected to the drive assembly. The output end of the drive assembly retracts, leaving space for the battery module and preventing interference between the tightening guns and the battery module. The battery module is then placed under the adjusting frame, with four screws pre-positioned at the corners of the battery module. The drive assembly drives the adjusting frame to sink, causing the four tightening guns to simultaneously contact the four screws. The tightening guns then begin to tighten the four screws simultaneously, improving tightening efficiency. When the dimensions of the battery module change in the first and second directions, the positions of the four tightening guns can be adjusted on the adjusting frame to accommodate the simultaneous installation of screws for battery modules of different sizes.

[0028] This utility model also provides a battery pack production line. By using the above-mentioned screw tightening device for battery modules, the assembly time of the battery pack can be shortened, and it can be adapted to form battery packs from battery modules of different sizes. Attached Figure Description

[0029] Figure 1 is a structural schematic diagram of the screw tightening device for the battery module provided in an embodiment of the present utility model;

[0030] Figure 2 is a structural schematic diagram of some parts of the screw tightening device of the battery module provided in the embodiment of this utility model;

[0031] Figure 3 is an enlarged view of point A in Figure 2.

[0032] In the picture:

[0033] 10. Fixture; 20. Drive assembly; 21. Drive component;

[0034] 30. Adjustable frame; 31. First connector; 32. First frame; 321. First connecting structure; 33. Second frame; 331. Second connecting structure;

[0035] 40. Tighten the gun;

[0036] 50. Second connector; 51. Slider; 511. Fixing hole; 52. Supporting component; 60. Camera; 200. Battery module; 210. Screw; 220. QR code. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0041] This embodiment provides a screw tightening device for a battery module, which can quickly and simultaneously install screws 210 at the four corners of a battery module 200, and can adapt to battery modules 200 of different sizes. As shown in Figure 1, the screw tightening device for the battery module includes a fixing member 10, a driving component 20, an adjusting frame 30, and at least two tightening guns 40. The driving component 20 is connected to the fixing member 10; the adjusting frame 30 is connected to the output end of the driving component 20, and the driving component 20 can drive the adjusting frame 30 to move in the vertical direction (Z direction in the figure); at least two tightening guns 40 are connected to the adjusting frame 30, and the position of each tightening gun 40 in the first direction (X direction in the figure) and the second direction (Y direction in the figure) is adjustable. The tightening guns 40 are set to correspond to the screw positions of the battery module 200, and the first direction, the second direction, and the vertical direction are perpendicular to each other.

[0042] The aforementioned screw tightening device for the battery module, by setting a drive component 20, connects the adjusting frame 30 to the output end of the drive component 20. The output end of the drive component 20 retracts to provide space for the battery module 200, avoiding interference between the tightening guns 40 and the battery module 200. Then, the battery module 200 is placed under the adjusting frame 30, and the screws 210 are pre-placed at the corners of the battery module 200. The drive component 20 drives the adjusting frame 30 to sink, causing at least two tightening guns 40 to simultaneously contact the corresponding screws 210. Then, the tightening guns 40 start working, tightening at least two screws 210 simultaneously, improving the efficiency of tightening the screws 210. When the dimensions of the battery module 200 change in the first and second directions, the positions of at least two tightening guns 40 can be adjusted on the adjusting frame 30 to accommodate the simultaneous installation of screws 210 of different sizes of battery modules 200.

[0043] In this embodiment, as shown in Figure 1, four tightening guns 40 are provided, and the four tightening guns 40 are arranged in a matrix on the adjustment frame 30. In other embodiments, for the elongated battery module 200, the tightening guns 40 can also be set to two or three, which is not limited here.

[0044] Optionally, as shown in Figure 1, the adjusting frame 30 includes a first connecting member 31 and alternatingly connected first and second frame borders 32 and 33. The first frame border 32 extends along a second direction, and the second frame border 33 extends along a first direction. One of the first frame border 32 and the second frame border 33 is connected to the first connecting member 31 and its position is adjustable perpendicular to its own extension direction. The other frame border 33 is provided with a tightening gun 40, the position of which is adjustable. With the above configuration, when the size of the battery module 200 in the first direction changes, the interval between the two tightening guns 40 on the second frame border 33 can be changed; when the size of the battery module 200 in the second direction changes, the interval between the two second frame borders 33 on the two first frame borders 32 can be changed, thereby enabling the tightening of screws on battery modules 200 of different sizes.

[0045] It is understood that there are two first frame 32s arranged opposite each other, and two second frame 33s arranged opposite each other. The first connector 31 extends along the first direction and is connected to the output end of the drive assembly 20. The two first frame 32s are arranged at intervals along the first direction and are respectively connected to the two ends of the first connector 31. Each first frame 32 extends along the second direction. The two second frame 33s are arranged at intervals along the second direction. Each second frame 33 extends along the first direction. One end of the second frame 33 is connected to one of the first frame 32s, and the other end of the second frame 33 is connected to the other first frame 32. The position of the second frame 33 is adjustable in the second direction. Each second frame 33 is provided with two tightening guns 40. In the first direction, the position of the tightening guns 40 relative to the second frame 33 is adjustable.

[0046] Optionally, as shown in Figure 1, a plurality of first connecting structures 321 are spaced apart on the first frame 32, and second connecting structures 331 are respectively provided at both ends of the second frame 33; the second connecting structure 331 can be selectively fixed to any of the first connecting structures 321 of the corresponding first frame 32; or the second connecting structure 331 can be selectively aligned with any of the first connecting structures 321 of the corresponding first frame 32 and connected by a first locking member; through the above arrangement, the position of the second frame 33 relative to the first frame 32 is changed, thereby changing the distance between the two second frames 33. In the above scheme, the distance between the two second frames 33 is changed to be non-continuous.

[0047] Optionally, in this embodiment, as shown in FIG1, both the first connecting structure 321 and the second connecting structure 331 are through holes, and the first locking member is a bolt, which passes through the through hole and is threadedly connected to the nut.

[0048] In another embodiment (not shown), the first connecting structure 321 is a through hole, the second connecting structure 331 is a plug-in protrusion with external threads, the plug-in protrusion can selectively plug into any through hole, and the first locking member is a nut, which is threadedly connected to the plug-in protrusion and abuts against the first frame 32.

[0049] In another alternative embodiment (not illustrated), in the second direction, the end of the second frame 33 slides with the corresponding first frame 32 and can be locked by a third locking member, thereby changing the distance between the two second frame 33. In the above scheme, the distance between the two second frame 33 is changed to be continuous. The third locking member can be threaded to the end of the second frame 33 and abut against the first frame 32 to lock them together.

[0050] Optionally, as shown in Figure 1, in this embodiment, the tightening gun 40 is connected to the second frame 33 via the second connector 50. The second connector 50 and the second frame 33 are slidably engaged and can be locked by the fourth locking member. It can be understood that the second frame 33 is in the form of a slide rail. In this scheme, the spacing between the two tightening guns 40 connected to the same second frame 33 is adjusted to be continuous.

[0051] Optionally, as shown in Figures 2 and 3, the second connecting member 50 includes a slider 51 and a carrier member 52. The slider 51 is slidably engaged with the second frame 33. A fixing hole 511 is provided on the side of the slider 51, and a fourth locking member is installed in the fixing hole 511 and can abut against the second frame 33. The carrier member 52 is connected to the slider 51, and a tightening gun 40 is correspondingly installed on each carrier member 52. Through the arrangement of the slider 51 and the carrier member 52, the installation of the tightening gun 40 can be achieved relatively easily, while at the same time, the sliding engagement and locking with the second frame 33 can be achieved.

[0052] Optionally, as shown in Figure 3, in this embodiment, the fourth locking element is a screw (not shown). The screw is threadedly connected to the fixing hole 511. Tightening the screw will allow it to abut against the second frame 33, and the slider 51 will be fixed. Loosening the screw will allow the slider 51 to slide on the second frame 33 to adjust its position.

[0053] In another optional embodiment, the fourth locking element is a ball screw, which is threaded to the fixing hole 511. In this solution, the ball screw can be slidably adjusted after installation. The second frame 33 is provided with recesses at intervals, and the ball screw can be locked by sinking into the recesses.

[0054] In another embodiment (not shown), the second frame 33 is provided with a plurality of third connecting structures spaced apart along the first direction. The tightening gun 40 is connected to the second frame 33 via a second connector 50. A fourth connecting structure is provided on the second connector 50. The fourth connecting structure can be selectively fixed to any of the third connecting structures of the second frame 33; or the fourth connecting structure can be selectively aligned with any of the third connecting structures of the second frame 33 and connected to it via a second locking member. With the above arrangement, the position of the tightening gun 40 on the second frame 33 can be adjusted. In this scheme, the position adjustment of the tightening gun 40 is discontinuous. The direct connection between the fourth connecting structure and the third connecting structure can be selected as a plug-in connection.

[0055] For the scheme connected via a second locking element, optionally, both the third and fourth connecting structures are through holes, and the second locking element is a bolt, which passes through the through hole and is threadedly connected to a nut; or

[0056] The third connecting structure is a through hole, and the fourth connecting structure is a threaded insertion protrusion. The insertion protrusion can selectively engage with any through hole. The second locking element is a nut, which is threadedly connected to the insertion protrusion and abuts against the second frame 33. Both of these solutions can achieve the interval adjustment of the position of the tightening gun 40 in the first direction.

[0057] Optionally, as shown in Figure 1, the drive assembly 20 includes at least two drive members 21, both of which are connected to the fixing member 10. This ensures that the entire adjustment frame 30 is subjected to balanced forces.

[0058] Optionally, scales are provided on both first borders 32 and both second borders 33 to enable quick alignment when adjusting the position.

[0059] Optionally, as shown in Figure 1, the screw tightening device for the battery module also includes a camera 60, which is configured to take a picture of the QR code 220 on the battery module 200 to match the information of the battery module 200 for subsequent traceability.

[0060] This embodiment also provides a battery pack production line, including the aforementioned screw tightening device for the battery modules. By employing the aforementioned screw tightening device for the battery modules, the battery pack production line can shorten the battery pack assembly time and can adapt to battery modules 200 of different sizes to form a battery pack.

[0061] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A screw tightening device for a battery module, characterized in that, include: A fixing member (10) and a driving assembly (20), the driving assembly (20) being connected to the fixing member (10); an adjusting frame (30), connected to the output end of the driving assembly (20), the driving assembly (20) being able to drive the adjusting frame (30) to move in the vertical direction; at least two tightening guns (40), both connected to the adjusting frame (30), each tightening gun (40) having an adjustable position in a first direction and a second direction, the tightening gun (40) corresponding to the screw position of the battery module (200), the first direction, the second direction and the vertical direction being perpendicular to each other.

2. The screw tightening device for the battery module according to claim 1, characterized in that, The adjustment frame (30) includes: a first connector (31) extending along the first direction, the first connector (31) being connected to the output end of the drive assembly (20); and alternatingly enclosing and connecting a first frame (32) and a second frame (33), the first frame (32) extending along the second direction, the second frame (33) extending along the first direction, one of the first frame (32) and the second frame (33) being connected to the first connector (31) and having an adjustable position perpendicular to its own extension direction, and the other of the two being provided with the tightening gun (40), the position of the tightening gun (40) being adjustable.

3. The screw tightening device for the battery module according to claim 2, characterized in that, The first frame (32) is provided with a plurality of first connecting structures (321) spaced apart, and the two ends of the second frame (33) are respectively provided with second connecting structures (331); the second connecting structure (331) can be selectively fixed to any of the first connecting structures (321) of the corresponding first frame (32); or the second connecting structure (331) can be selectively aligned with any of the first connecting structures (321) of the corresponding first frame (32) and connected by a first locking member.

4. The screw tightening device for the battery module according to claim 2, characterized in that, The second frame (33) is provided with a plurality of third connecting structures at intervals in the first direction. The tightening gun (40) is connected to the second frame (33) through the second connector (50). The second connector (50) is provided with a fourth connecting structure. The fourth connecting structure can be selectively fixed to any of the third connecting structures of the second frame (33).

5. The screw tightening device for the battery module according to claim 2, characterized in that, In the second direction, the end of the second frame (33) is slidably engaged with the corresponding first frame (32) and can be locked by a third locking member; and / or the tightening gun (40) is connected to the second frame (33) by a second connector (50), the second connector (50) is slidably engaged with the second frame (33) and can be locked by a fourth locking member.

6. The screw tightening device for the battery module according to claim 5, characterized in that, The second connector (50) includes: a slider (51) that slides in cooperation with the second frame (33), a fixing hole (511) is provided on the side of the slider (51), and the fourth locking member is installed in the fixing hole (511) and can abut against the second frame (33); a carrier (52) that is connected to the slider (51), and a tightening gun (40) is installed on each carrier (52).

7. The screw tightening device for the battery module according to claim 6, characterized in that, The fourth locking element is a screw, which is threadedly connected to the fixing hole (511); or the fourth locking element is a ball screw, which is threadedly connected to the fixing hole (511).

8. The screw tightening device for a battery module according to any one of claims 1-7, characterized in that, The drive assembly (20) includes at least two drive members (21), and at least two of the drive members (21) are connected to the fixing member (10).

9. The screw tightening device for a battery module according to any one of claims 2-7, characterized in that, The two first borders (32) and the two second borders (33) are all provided with scales.

10. A battery pack production line, characterized in that, Includes a screw tightening device for a battery module as described in any one of claims 1-9.

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