Battery module pre-tightening force applying and fixing device

Abstract

The utility model relates to a battery module pretightening force applying and fixing device, which comprises a pressure applying mechanism, a pressure plate and a support plate, the pressure plate and the support plate are respectively sleeved in a guide pillar of the pressure applying mechanism, and the lower surface of the pressure plate and the upper surface of the support plate are respectively provided with open slots for a ribbon to pass through. The pressing plate and the supporting plate are movably connected with the pressure applying mechanism, a pressure sensor is installed at the bottom of the supporting plate, and a winding mechanism for pulling the ribbon is further arranged on one side of the bottom of the pressure applying mechanism. According to the device, the pre-tightening force can be fixed while the pre-tightening force is applied to the battery module, the pre-tightening force packaging and mounting efficiency is improved, the accuracy of the applied value of the pre-tightening force is improved through the pressure sensor, and compared with an existing packaging method, the device is safer and more efficient.

Description

Technical Field

[0001] This utility model relates to the field of battery module packaging technology, and in particular to a device for applying and fixing pre-tightening force to a battery module. Background Technology

[0002] Please see Figure 6 When packaging battery modules, they need to be bundled with cable ties with clips to apply a certain pre-tension for easy installation in the car battery mounting slot. Currently, most pre-tensioning devices on battery modules can only control the applied pressure, and cannot simultaneously apply pre-tension to the battery module and then secure it with cable ties. Furthermore, securing the pre-tension with cable ties is time-consuming and labor-intensive, and it is impossible to determine whether the pre-tension is within a reasonable range. Summary of the Invention

[0003] The purpose of this utility model is to provide a pre-tightening force application and fixing device for battery modules. In view of the shortcomings of the prior art, a new type of pre-tightening force application device is designed and a reasonable pre-tightening force fixing method is provided to realize the application of pre-tightening force to battery modules. This saves manpower and improves the efficiency and accuracy of pre-tightening force application on battery modules, thereby solving the problems encountered in the background art.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A battery module preload application and fixing device includes a pressure applying mechanism, a pressure plate, and a support plate. The pressure plate and the support plate are respectively fitted into the guide post of the pressure applying mechanism. The lower surface of the pressure plate and the upper surface of the support plate are respectively provided with slots for cable ties to pass through. The pressure plate and the support plate are respectively movably connected to the pressure applying mechanism. A pressure sensor is installed at the bottom of the support plate. A winding mechanism for pulling the cable ties is also provided on one side of the bottom of the pressure applying mechanism.

[0006] In the above scheme, the pressure applying mechanism includes a top plate, a bottom plate and a screw. The bottom four ends of the top plate are connected to the bottom plate through guide posts. The screw is threadedly connected to the top plate, and a handle is provided at the top of the screw.

[0007] In the above scheme, the winding mechanism includes a servo motor, a winding rod, and a bearing assembly. The servo motor is installed on the front side of the base plate, and the output end of the servo motor is rotatably connected to the winding rod. The end of the winding rod is rotatably connected to the bearing assembly, and a slot is provided on the rod body of the winding rod.

[0008] In the above scheme, a guide sleeve is provided at the connection between the guide post and the pressure plate and support plate, and a rubber ring is provided at the bottom of the guide sleeve. As a preferred embodiment, the inner diameter of the rubber ring wraps around the guide post and engages with the guide sleeve, and the outer diameter of the rubber ring is smaller than the outer diameter of the guide sleeve.

[0009] As a preferred embodiment, the slots are provided in at least two positions, with the slots on the lower surface of the pressure plate and the upper surface of the support plate corresponding vertically.

[0010] In the above solution, a module platform is mounted on the top center of the support plate via a slide rail, and a handle is provided on the outer side of the module platform. The module platform has a clearance groove to avoid the slot, and the handle is located on the outer side of the pressure applying mechanism.

[0011] In the above solution, the upper surface of the support plate is further provided with a sliding groove, and a slide rail is located within the sliding groove. The slide rail includes a slider and a slide rod, with the slider installed within the sliding groove and the slider and slide rod slidably connected. As a preferred embodiment, a limit plate is installed at the rear of the sliding groove.

[0012] Compared with existing technologies, the advantages of this invention are as follows: By slotting the pressure plate and support plate, the steel strap of the cable tie can be passed through the slots to fix the pre-tightening force while applying it; by configuring a cable tie winding mechanism on the device, the tension of the steel strap is controlled, avoiding excessive tension from manual tightening and improving the accuracy of the pre-tightening force; in addition, the device is equipped with a slide rail to replace manual handling, saving manpower and improving efficiency; the bottom of the guide sleeve uses a rubber ring to slow down the load and provide cushioning for the lowering platform, reducing collisions. Therefore, this device can apply and fix the pre-tightening force to the battery module simultaneously, improving the efficiency of pre-tightening packaging and installation, and using a pressure sensor to improve the accuracy of the applied pre-tightening force value. Compared with existing packaging methods, it is safer and more efficient. Attached Figure Description

[0013] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a front view structural diagram of the present utility model;

[0016] Figure 3 This is a side view of the structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the sectional structure of the present invention along the guide post;

[0018] Figure 5 This is a schematic diagram of the support plate and winding mechanism in this utility model;

[0019] Figure 6 The battery module described in the prior art.

[0020] Figure 7 This is a structural schematic diagram of the present invention in an embodiment.

[0021] Numbering in the diagram: 1-Pressure applying mechanism; 11-Top plate; 12-Guide post; 13-Base plate; 14-Screw; 15-Pressure sensor; 2-Pressure plate; 21-Slot; 22-Rubber ring; 23-Guide sleeve; 3-Support plate; 31-Slide groove; 32-Slider; 33-Slide rod; 34-Limiting plate; 4-Module platform; 41-Handle; 42-Slide rail; 5-Wrapping mechanism; 51-Servo motor; 52-Wrapping rod; 53-Bearing assembly; 54-Slot; 6-Battery module; 61-Cable tie. Detailed Implementation

[0022] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the utility model will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of this utility model, and therefore only show the relevant components of this utility model.

[0023] Based on the technical solution of this utility model, without changing the essential spirit of this utility model, those skilled in the art can propose various interchangeable structural methods and implementation methods. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model, and should not be regarded as the entirety of this utility model or as a limitation or restriction of the technical solution of this utility model.

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1, as Figure 1-3 , Figure 6 , Figure 7 As shown, a battery module preload application and fixing device includes a pressure mechanism 1, a pressure plate 2, and a support plate 3. The pressure mechanism 1 includes a top plate 11, a bottom plate 13, and a screw 14. The pressure mechanism 1 is similar to a stamping mechanism, except that it is not used for stamping, but for squeezing the battery module 6 to give it a certain preload.

[0026] In terms of layout, the bottom four ends of the top plate 11 are connected to the bottom plate 13 through guide posts 12, and the rod of the screw 14 is threaded onto the top plate 11. The top of the screw 14 is provided with a handle. By turning the handle, the screw 14 can be rotated on the top plate 11, thereby adjusting the height of the pressure plate 2 within the pressure applying mechanism 1.

[0027] The pressure plate 2 and the support plate 3 are respectively fitted into the guide post 12 of the pressure applying mechanism 1. The lower surface of the pressure plate 2 and the upper surface of the support plate 3 are respectively provided with slots 21 through which cable ties 61 pass. When the cable ties 61 are inserted into the battery module 6, they will fix the battery module 6 through the slots 21. At least two slots 21 are provided, and the slots 21 on the lower surface of the pressure plate 2 and the upper surface of the support plate 3 are vertically aligned. In practice, three slots on the upper and three on the lower surface, for a total of six slots 21, can be provided for triple fixation of the battery module 6.

[0028] The pressure plate 2 and the support plate 3 are movably connected to the guide post 12 of the pressure applying mechanism 1 in the vertical direction. A pressure sensor 15 is installed at the bottom of the support plate 3. When it is pressed by the pressure plate 2, the pressure can be tested to keep it within the normal pre-tightening force range. A winding mechanism 5 is also provided on one side of the bottom of the pressure applying mechanism 1 to pull the cable ties. The winding mechanism 5 packs the battery module 6 under pre-tightening force using cable ties 61.

[0029] Example 2, please refer to Figure 5 Based on the scheme of Embodiment 1, a battery module pre-tightening force application and fixing device, the winding mechanism 5 includes a servo motor 51, a winding rod 52, and a bearing assembly 53. The servo motor 51 is installed on the front side of the base plate 13. The output end of the servo motor 51 is rotatably connected to the winding rod 52. The end of the winding rod 52 is rotatably connected to the bearing assembly 53. A slot 54 is provided on the rod body of the winding rod 52 for inserting the end of the cable tie 61 to facilitate winding it during rotation.

[0030] The bearing assembly 53 includes a bearing housing and a bearing installed inside. When the servo motor 51 drives the winding rod 52 to rotate, the winding rod 52 rotates with the bearing housing through the bearing. During the rotation, the cable tie 61 inserted into the slot 54 is wound to tighten the battery module 6 and give it a certain preload.

[0031] Example 3, please refer to Figure 4 Based on the scheme of embodiment 1, a guide sleeve 23 is provided at the connection between the guide post 12 and the pressure plate 2 and the support plate 3. A rubber ring 22 is provided at the bottom of the guide sleeve 23. The top of the rubber ring 22 on the pressure plate 2 is in contact with the pressure plate 2, and the top of the rubber ring 22 on the support plate 3 is in contact with the support plate 3.

[0032] As a preferred embodiment, the inner diameter of the rubber ring 22 wraps around the guide post 12 and engages with the guide sleeve 23, being tightly fixed together by a stepped structure. The outer diameter of the rubber ring 22 is smaller than the outer diameter of the guide sleeve 23, which can provide a certain buffering effect when the battery module 6 is compressed.

[0033] In Example 4, based on the scheme of Example 1, a module platform 4 is mounted on the top center of the support plate 3 via a slide rail 42, and a handle 41 is provided on the outer side of the module platform 4. The module platform 4 can be pulled in the front and back directions via the handle 41 and the slide rail 42, and the battery module 6 can be placed on it and then pushed to the work station of the pressure mechanism 1.

[0034] It is worth noting that the module platform 4 has a clearance slot 21 to avoid the cable ties 61 during packaging and prevent interference. The handle 41 is located on the outside of the pressure mechanism 1, mainly to facilitate manual pulling to complete the transportation of the battery module 6.

[0035] Please see Figure 5 The upper surface of the support plate 3 is also provided with a groove 31, and the slide rail 42 is located in the groove 31. The slide rail 42 includes a slider 32 and a slide rod 33. The slider 32 is installed in the groove 31 and the slider 32 is slidably connected to the slide rod 33. The slide rail 42 can be implemented by ordering existing linear slide rail products.

[0036] As a preferred embodiment, a limit plate 34 is installed at the rear of the slide 31 to limit the stroke of the slide rod 33 within the slide 31, thereby preventing it from exceeding the working range of the pressure applying mechanism 1.

[0037] In summary, during implementation, the packing personnel place the pouch battery module 6 on the module platform 4 and push it between the pressure plate 2 and the support plate 3 using the handle 41. The side of the pouch battery module 6 should be on the same side as the handle 41, and the flat surface of the pouch battery module 6 should cover the three slots 21 on the pressure plate 6. By rotating the screw 14, the pressure plate 2 is moved downwards and contacts the battery module 6. At the same time, the pressure sensor 15 displays the pressure. Continue rotating the screw 14 until the pressure displayed on the pressure sensor 15 meets the module preload requirement and stabilizes. At this point, the module preload is provided by the pressure plate 2 with the slots 21.

[0038] Next, the module preload is fixed. The stainless steel strip 61 is wound around the battery module 6 through the slot 21. Excess strip 61 is then tightened using the winding device 5. The winding device 5 is activated, and when the pressure sensor 15 reading exceeds the error range, the servo motor 51 stops working, completing the module preload fixation. Finally, the screw 14 is rotated to release the pressure, and the module is removed via the module platform 4. Throughout this process, the module preload is continuously provided by the stainless steel strip 61.

[0039] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A device for applying and fixing preload to a battery module, characterized in that: The device includes a pressure applying mechanism (1), a pressure plate (2), and a support plate (3). The pressure plate (2) and the support plate (3) are respectively fitted into the guide post (12) of the pressure applying mechanism (1). The lower surface of the pressure plate (2) and the upper surface of the support plate (3) are respectively provided with slots (21) for the cable tie to pass through. The pressure plate (2) and the support plate (3) are respectively movably connected to the pressure applying mechanism (1). A pressure sensor (15) is installed at the bottom of the support plate (3). A winding mechanism (5) for pulling the cable tie is also provided on one side of the bottom of the pressure applying mechanism (1).

2. The battery module preload application and fixing device according to claim 1, characterized in that: The pressure applying mechanism (1) includes a top plate (11), a bottom plate (13) and a screw (14). The bottom four ends of the top plate (11) are connected to the bottom plate (13) through guide posts (12). The rod body of the screw (14) is threadedly connected to the top plate (11), and a handle is provided on the top of the screw (14).

3. The battery module preload application and fixing device according to claim 2, characterized in that: The guide post (12) is provided with a guide sleeve (23) at the connection between the guide post (12) and the pressure plate (2) and the support plate (3), and a rubber ring (22) is provided at the bottom of the guide sleeve (23).

4. The battery module preload application and fixing device according to claim 3, characterized in that: The inner diameter of the rubber ring (22) wraps around the guide post (12) and engages with the guide sleeve (23). The outer diameter of the rubber ring (22) is smaller than the outer diameter of the guide sleeve (23).

5. The battery module preload application and fixing device according to claim 1, characterized in that: The slot (21) is provided in at least two places, and the slots (21) on the lower surface of the pressure plate (2) and the upper surface of the support plate (3) are corresponding vertically.

6. The battery module preload application and fixing device according to claim 1, characterized in that: The module platform (4) is mounted on the top center of the support plate (3) via a slide rail (42), and a handle (41) is provided on the outer side of the module platform (4).

7. The battery module preload application and fixing device according to claim 6, characterized in that: The module platform (4) is provided with a clearance groove to avoid the slot (21), and the handle (41) is located on the outside of the pressure mechanism (1).

8. The battery module preload application and fixing device according to claim 6, characterized in that: The upper surface of the support plate (3) is also provided with a sliding groove (31), and the slide rail (42) is located in the sliding groove (31). The slide rail (42) includes a slider (32) and a slide rod (33). The slider (32) is installed in the sliding groove (31), and the slider (32) and the slide rod (33) are slidably connected.

9. The battery module preload application and fixing device according to claim 8, characterized in that: A limiting plate (34) is installed at the rear of the slide (31).

10. The battery module preload application and fixing device according to claim 2, characterized in that: The winding mechanism (5) includes a servo motor (51), a winding rod (52), and a bearing assembly (53). The servo motor (51) is mounted on the front side of the base plate (13). The output end of the servo motor (51) is rotatably connected to the winding rod (52). The end of the winding rod (52) is rotatably connected to the bearing assembly (53). A slot (54) is provided on the rod body of the winding rod (52).

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