Elastic clamping tool for lithium battery

Abstract

The utility model discloses a kind of lithium battery elastic clamping tool, lithium battery production equipment technical field, including base, fixed plate, moving plate, driving device and tow component;The upper surface of base is provided with clamping area;Clamping area is provided with fixed plate in one end along clamping direction;Clamping area is provided with sliding slot along clamping direction, and moving plate is slidably connected in sliding slot;Clamping area is provided with tow component on both sides along clamping direction;Tow component is provided with traction end and mounting end in opposition;The mounting end of tow component is close to one side of moving plate, and the traction end of tow component is close to one side of fixed plate;The mounting end of tow component is connected in moving plate;The traction end of tow component is elastically connected in the driving end of driving device. The utility model provides a kind of lithium battery elastic clamping tool, and the two sides of moving plate can be pulled by the mode of elastic tow, can be flexibly compensated to the driving force of deviation, avoid uneven force or generate friction interference when battery clamping.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production equipment technology, and in particular to a flexible clamping tool for lithium batteries. Background Technology

[0002] As a core energy storage device in the new energy field, lithium batteries involve multiple critical processes in their production, including electrode cutting, cell assembly, tab welding, and packaging and testing. The machining precision of the precision components in each process directly determines the battery's energy density, cycle stability, and safety performance. Testing fixtures used in lithium battery production are devices used to securely hold lithium batteries and establish an electrical connection with testing instruments to test key indicators such as voltage, current, internal resistance, and capacity. The testing fixtures need to precisely fix the batteries to prevent displacement, ensure operational accuracy, and avoid squeezing or scratching battery components during production, thus reducing losses.

[0003] Chinese utility model patent application No. 201720460117.7 discloses a high-efficiency battery station fixture. This patent uses a push rod to drive each movable clamping component to move back and forth. Since the movable clamping components have limiting structures such as slide rails or guide rods to limit the movement path, if due to reasons such as installation accuracy, the pushing direction of the push mechanism may not correspond to the limiting path direction of the limiting structure, resulting in frictional interference when the movable clamping components move, and the clamping surface cannot be uniformly aligned with the battery, thus failing to guarantee accurate clamping. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a lithium battery elastic clamping fixture. By elastically dragging the two sides of the moving plate, the battery between the moving plate and the fixed plate is clamped. At the same time, the biased driving force can be flexibly compensated to avoid uneven force when the moving plate clamps the battery, or frictional interference between the moving plate and the slide groove.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a lithium battery elastic clamping fixture, including a base, a fixed plate, a movable plate, a driving device, and a dragging assembly. The upper surface of the base is provided with a clamping area. A fixed plate is provided at one end of the clamping area along the clamping direction. A sliding groove is provided in the clamping area along the clamping direction, and the movable plate is slidably connected to the sliding groove. Dragging assemblies are provided on both sides of the clamping area along the clamping direction. The dragging assembly is located between the movable plate and the fixed plate. The dragging assembly has a traction end and an installation end facing each other. The installation end of the dragging assembly is closer to the movable plate, and the traction end of the dragging assembly is closer to the fixed plate. The installation end of the dragging assembly is connected to the movable plate. The traction end of the dragging assembly is elastically connected to the driving end of the driving device.

[0006] The lithium battery elastic clamping fixture provided by this utility model preferably includes a dragging assembly comprising a mounting block, a traction screw, an adjusting nut, a spring, and a traction block; the mounting block is disposed on the side of the moving plate perpendicular to the clamping direction; the traction block is disposed on the driving end of the driving device and located between the moving plate and the fixed plate; the traction screw is disposed along the clamping direction, passes through the traction block, one end of the traction screw is connected to the side of the mounting block facing the fixed plate, and the other end of the traction screw is threaded with an adjusting nut; the spring is sleeved on the traction screw and located between the adjusting nut and the traction block.

[0007] The lithium battery elastic clamping fixture provided by this utility model preferably includes a guide rod and a support frame in the dragging assembly; the support frame is disposed on the upper surface of the base and located at the opposite end of the fixed plate; the guide rod is disposed along the clamping direction; one end of the guide rod is connected to the fixed plate, and the other end of the guide rod passes through the traction block and the moving plate in sequence and is then connected to the support frame.

[0008] The lithium battery elastic clamping fixture provided by this utility model preferably has a plug at one end of the traction screw where an adjusting nut is installed; the adjusting nut is limited between the plug and the spring.

[0009] The above technical solution has the following advantages or beneficial effects: The present invention provides a lithium battery elastic clamping fixture, which belongs to the field of lithium battery production equipment technology, including a base, a fixed plate, a movable plate, a driving device, and a dragging assembly; the upper surface of the base is provided with a clamping area; a fixed plate is provided at one end of the clamping area along the clamping direction; a sliding groove is provided in the clamping area along the clamping direction, and the movable plate is slidably connected to the sliding groove; dragging assemblies are provided on both sides of the clamping area along the clamping direction; the dragging assembly is located between the movable plate and the fixed plate; the dragging assembly is provided with a traction end and an installation end facing each other; the installation end of the dragging assembly is close to the movable plate, and the traction end of the dragging assembly is close to the fixed plate; the installation end of the dragging assembly is connected to the movable plate; the traction end of the dragging assembly is elastically connected to the driving end of the driving device. This utility model provides a lithium battery elastic clamping fixture. By elastically dragging the two sides of the moving plate, the battery between the moving plate and the fixed plate is clamped. At the same time, it can flexibly compensate for the biased driving force, so as to avoid uneven force when the moving plate clamps the battery, or frictional interference between the moving plate and the slide. Attached Figure Description

[0010] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0011] Figure 1 This is an overall structural diagram of a lithium battery elastic clamping fixture provided in Embodiment 1 of this utility model; Figure 2This is a structural diagram of a dragging assembly of a lithium battery elastic clamping tool provided in Embodiment 1 of this utility model; Figure 1-2 Includes: 1. Base; 11. Clamping area; 12. Fixing plate; 13. Moving plate; 14. Slide; 2. Traction assembly; 21. Mounting block; 22. Traction screw; 23. Adjusting nut; 24. Spring; 25. Traction block; 3. Guide rod; 31. Support frame; 4. Plug; 5. Drive device. Detailed Implementation

[0012] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0013] Example 1: like Figure 1-2 As shown: This utility model provides a lithium battery elastic clamping fixture, including a base 1, a fixed plate 12, a movable plate 13, a driving device 5, and a dragging assembly 2. The upper surface of the base 1 is provided with a clamping area 11. The fixed plate 12 is provided at one end of the clamping area 11 along the clamping direction. The clamping area 11 is provided with a sliding groove 14 along the clamping direction, and the movable plate 13 is slidably connected to the sliding groove 14. The dragging assembly 2 is provided on both sides of the clamping area 11 along the clamping direction. The dragging assembly 2 is located between the movable plate 13 and the fixed plate 12. The dragging assembly 2 is provided with a traction end and an installation end facing each other. The installation end of the dragging assembly 2 is close to the movable plate 13, and the traction end of the dragging assembly 2 is close to the fixed plate 12. The installation end of the dragging assembly 2 is connected to the movable plate 13. The traction end of the dragging assembly 2 is elastically connected to the driving end of the driving device 5.

[0014] The working process of the lithium battery elastic clamping fixture provided by this utility model is as follows: The battery is placed on the clamping area 11 and located between the moving plate 13 and the fixed plate 12, and then the drive device 5 is started. The drive end of the drive device 5 drives the traction end of the towing component 2 to move towards the fixed plate 12. The traction end of the towing component 2 pulls the mounting end of the towing component 2 through elastic tension, thereby driving the moving plate 13 to move towards the fixed plate 12. When the moving plate 13 contacts the battery, the drive end of the drive device 5 continues to travel along the set path, so that the towing component 2 continuously applies tension to the moving plate 13, thereby making the moving plate 13 and the fixed plate 12 clamp the battery together, realizing the clamping and fixing of the battery.

[0015] In the above process, if the driving force direction of the drive device 5 is different from that of the guide rail 14 due to installation accuracy issues, resulting in inconsistent tension applied to the dragging components 2 on both sides of the moving plate 13, the force on both sides of the moving plate 13 will be uneven, and there will be a radial component force. This will cause the moving plate 13 to tilt and press against the guide rail 14, and the resulting interference will increase the sliding friction. On the side of the moving plate 13 with a larger tension, since the traction end of the dragging component 2 is elastic, the elastic deformation will increase due to the increase in tension. The relatively increased deformation will compensate for the radial component force on the moving plate 13, preventing this component force from being directly transmitted to the moving plate 13, thereby eliminating the hard compression between the moving plate 13 and the guide rail 14, and making the direction of the resultant force on the moving plate 13 consistent with the track direction of the guide rail 14.

[0016] It should be noted that the driving device 5 involved in the above scheme can have an independent driving end, which simultaneously drives both sides of the moving plate 13, or it can have two driving ends or two sets of driving devices 5 that act on both sides of the moving plate 13 respectively. Whether the driving end drives independently or the two driving ends drive separately does not fundamentally differ from the technical problem caused by this utility model, but rather lies in the inconsistent driving force on both sides of the moving plate 13.

[0017] The present invention provides a lithium battery elastic clamping fixture by setting telescopic dragging components 2 on both sides of a moving plate 13, and driving the dragging components 2 to pull the moving plate 13 to clamp the battery. When the moving plate 13 is subjected to radial force due to the deviation of the driving force direction, the dragging components 2 on both sides compensate for the radial force by different deformations, thereby eliminating the hard compression between the moving plate 13 and the slide 14, so that the resultant force on the moving plate 13 is finally consistent with the track direction of the slide 14.

[0018] As a specific implementation of the towing assembly 2, in a preferred embodiment of this example, the towing assembly 2 includes a mounting block 21, a traction screw 22, an adjusting nut 23, a spring 24, and a traction block 25; the mounting block 21 is disposed on the side of the moving plate 13 perpendicular to the clamping direction; the traction block 25 is disposed on the driving end of the driving device 5 and is located between the moving plate 13 and the fixed plate 12; the traction screw 22 is disposed along the clamping direction, the traction screw 22 passes through the traction block 25, one end of the traction screw 22 is connected to the side of the mounting block 21 facing the fixed plate 12, and the other end of the traction screw 22 is threaded with an adjusting nut 23; the spring 24 is sleeved on the traction screw 22 and is located between the adjusting nut 23 and the traction block 25.

[0019] In the above preferred embodiment, the traction block 25 serves as the traction end of the towing assembly 2, and the mounting block 21 serves as the mounting end of the towing assembly 2. The driving end of the driving device 5 pushes the traction block 25. When the traction block 25 moves toward the fixed plate 12, it and the adjusting nut 23 jointly compress the spring 24. The deformation generated by the spring 24 can make the forward displacement of the traction block 25 on this side greater than that of the traction block 25 on the side, thereby compensating for the radial component force applied to the side where the moving plate 13 is located, so that the direction of the resultant force finally received by the moving plate 13 is consistent with the track direction of the slide 14.

[0020] To increase the stability and directional accuracy of the driving force of the drive device 5, in a preferred embodiment, the towing assembly 2 further includes a guide rod 3 and a support frame 31. The support frame 31 is disposed on the upper surface of the base 1 and located at the opposite end of the fixed plate 12. The guide rod 3 is disposed along the clamping direction. One end of the guide rod 3 is connected to the fixed plate 12, and the other end of the guide rod 3 passes through the traction block 25 and the moving plate 13 in sequence before being connected to the support frame 31. The traction block 25 and the moving plate 13 directly driven by the drive device 5 are both guided by the guide rod 3, which can increase the limiting accuracy of the moving plate 13 while correcting the direction of the driving force of the drive device 5.

[0021] To prevent the adjusting nut 23 from slipping off the traction screw 22 due to prolonged stress or vibration, in a preferred embodiment, a plug 4 is provided at the end of the traction screw 22 where the adjusting nut 23 is installed; the adjusting nut 23 is confined between the plug 4 and the spring 24. It is worth noting that during the tooling debugging stage, the position of the adjusting nut 23 on the traction screw 22 can be adjusted according to the offset of the driving force of the drive device 5, thereby controlling the magnitude of the compression force of the spring 24 and eliminating the radial component force on the moving plate 13 in advance.

[0022] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application filed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

[0023] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A flexible clamping fixture for lithium batteries, characterized in that, The device includes a base, a fixed plate, a movable plate, a drive unit, and a towing assembly. The upper surface of the base has a clamping area. The fixed plate is located at one end of the clamping area along the clamping direction. The clamping area has a sliding groove along the clamping direction, and the movable plate is slidably connected to the sliding groove. The towing assembly is located on both sides of the clamping area along the clamping direction. The towing assembly is situated between the movable plate and the fixed plate. The towing assembly has a traction end and a mounting end facing each other. The mounting end of the towing assembly is closer to the movable plate, and the traction end of the towing assembly is closer to the fixed plate. The mounting end of the towing assembly is connected to the movable plate. The traction end of the towing assembly is elastically connected to the drive end of the drive unit.

2. The lithium battery elastic clamping fixture according to claim 1, characterized in that, The towing assembly includes a mounting block, a traction screw, an adjusting nut, a spring, and a traction block; the mounting block is disposed on the side of the moving plate perpendicular to the clamping direction; the traction block is disposed at the driving end of the driving device and is located between the moving plate and the fixed plate; the traction screw is disposed along the clamping direction, the traction screw passes through the traction block, one end of the traction screw is connected to the side of the mounting block facing the fixed plate, and the other end of the traction screw is threaded with the adjusting nut; the spring is sleeved on the traction screw and is located between the adjusting nut and the traction block.

3. The lithium battery elastic clamping fixture according to claim 2, characterized in that, The towing assembly further includes a guide rod and a support frame; the support frame is disposed on the upper surface of the base and located at the opposite end of the fixed plate; the guide rod is disposed along the clamping direction; one end of the guide rod is connected to the fixed plate, and the other end of the guide rod passes through the traction block and the moving plate in sequence and is then connected to the support frame.

4. The lithium battery elastic clamping fixture according to claim 2, characterized in that, The end of the traction screw where the adjusting nut is installed is provided with a plug; the adjusting nut is limited between the plug and the spring.

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