A semi-automatic shelling device for lithium batteries

Abstract

The present invention belongs to the field of lithium battery technology and discloses a semi-automatic shelling device for square lithium batteries, which is used for cutting lithium batteries and includes a base mechanism, a movable pressing mechanism and a cutting mechanism. The movable pressing mechanism is arranged on the top of the base mechanism and is slidably connected to the base mechanism. The movable pressing mechanism is used to clamp and fix the lithium battery and move it to a cutting position. The cutting mechanism is arranged on the side of the base mechanism and is used to cut the outer shell of the lithium battery. The semi-automatic shelling device composed of the base mechanism, the movable pressing mechanism and the cutting mechanism is used to cut the outer shell of the lithium battery. The shelling device can quickly improve the shelling efficiency without damaging the internal winding core, can accurately control the cutting depth, and has a wide range of applications.

Description

Technical Field

[0001] The invention belongs to the technical field of lithium batteries, and in particular relates to a semi-automatic shelling device for lithium batteries. Background Art

[0002] During the entire lithium battery production process, regular spot checks are required to inspect the interface status of the battery core at each step to determine the battery status and ensure that the lithium battery is qualified. After the lithium battery core is welded into the shell, it is wrapped in a square aluminum shell. During regular sampling inspections, the battery shell needs to be removed without damaging the internal core. This requirement is quite difficult. The existing method is to manually cut the battery shell with a blade around the battery, then pry open the battery shell with needle-nose pliers to remove the internal core. Although this method can meet the need to remove the core, there are still many problems that need to be improved.

[0003] The main problems are twofold. First, manually cutting the cell casing with a blade is highly random, making it difficult to control the depth of the cut. If the cut is too deep, the blade can scratch the core, making it impossible to measure. Manual blade cutting can easily injure hands, making it unsafe and not recommended for long-term use. Second, with the development of the lithium battery industry, lithium battery sizes are increasing, and the thickness of the battery casing has increased from 0.5mm to 2mm. Manually cutting the battery casing is becoming increasingly difficult, inefficient, and poses increased safety risks. Large-sized batteries are difficult to cut manually. Summary of the Invention

[0004] In response to the above problems, the present invention proposes a semi-automatic shelling device for lithium batteries, which is used for cutting lithium batteries. The device includes a base mechanism, a movable pressing mechanism and a cutting mechanism. The movable pressing mechanism is arranged on the top of the base mechanism and is slidably connected to the base mechanism. The movable pressing mechanism is used to clamp and fix the lithium battery and move it to the cutting position. The cutting mechanism is arranged on the side of the base mechanism and is used to cut the outer shell of the lithium battery.

[0005] Furthermore, the base mechanism includes a fixed bracket, a linear module and a guide rail slider. The linear module is axially arranged at the top middle position of the fixed bracket, and the two groups of guide rail sliders are axially arranged at the top of the fixed bracket near the edge position.

[0006] Furthermore, the movable pressing mechanism includes a base plate, an L-shaped baffle, a lithium battery side clamping and fixing component and a lithium battery large surface clamping and fixing component, the base plate is slidably connected to the base mechanism, the L-shaped baffle is arranged on the top of the base plate, the lithium battery side clamping and fixing component and the lithium battery large surface clamping and fixing component are arranged on the top of the base plate and are located on the inner side of the L-shaped baffle, the lithium battery side clamping and fixing component is arranged on the long side of the L-shaped baffle, and the lithium battery large surface clamping and fixing component is perpendicular to the short side of the L-shaped baffle.

[0007] Furthermore, the lithium battery side clamping and fixing component includes a first cylinder and a first pressure plate, the first cylinder is connected to the first pressure plate, the first pressure plate is arranged on the side close to the short side of the L-shaped baffle, and the first cylinder is arranged on the long side of the L-shaped baffle.

[0008] Furthermore, the large-surface clamping and fixing component of the lithium battery includes a second cylinder and a second pressure plate, the second cylinder is connected to the second pressure plate, the second pressure plate is arranged on the side close to the short side of the L-shaped baffle, and the second cylinder is arranged on the top of the bottom plate.

[0009] Furthermore, the movable pressing mechanism also includes a padding plate, and two of the padding plates are spaced apart and arranged between the top of the bottom plate and the bottom of the large-surface clamping and fixing component of the lithium battery.

[0010] Furthermore, the cutting mechanism includes a tool holder, a cutting disc, an electric cylinder and a pulley, the tool holder includes a fixed end and a working end, the fixed end is arranged on the side of the base mechanism, the cutting disc and the electric cylinder are arranged at intervals on the working end of the tool holder, the cutting disc is arranged at one end close to the movable clamping mechanism, and the pulley is sleeved on the cutting disc and the electric cylinder.

[0011] Furthermore, the cutting mechanism further includes a dust cover and a dust suction sleeve. The dust cover is sleeved on the outside of the cutting disc, and the dust suction sleeve is communicated with the dust cover.

[0012] Furthermore, the dust cover includes a U-shaped slot, and the U-shaped slot is located at the contact and cutting position between the cutting disc and the lithium battery.

[0013] Furthermore, the movable pressing mechanism further includes a padding block, which is arranged on the top of the bottom plate and contacts the short side of the L-shaped baffle.

[0014] Compared with the prior art, this application has the following beneficial effects:

[0015] The present application provides a semi-automatic shelling device consisting of a base mechanism, a mobile pressing mechanism and a cutting mechanism, which is used to cut the outer shell of a lithium battery. The shelling device can quickly improve the shelling efficiency without damaging the internal winding core, can accurately control the cutting depth, and has a wide range of applications.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the process of cutting a large surface of a lithium battery in an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the base mechanism in an embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the mobile pressing mechanism in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the process of cutting the side of a lithium battery in an embodiment of the present invention;

[0022] Figure 5 Schematic diagram of a cutting mechanism in an embodiment of the present invention;

[0023] Figure 6 Schematic diagram of a dust cover in an embodiment of the present invention;

[0024] Figure 7 It is a cutting side view in an embodiment of the present invention.

[0025] In the figure, 1. base mechanism; 11. fixed bracket; 12. linear module; 13. guide rail slider; 2. movable clamping mechanism; 21. bottom plate; 22. L-shaped baffle; 23. lithium battery side clamping and fixing component; 231. first cylinder; 232. first pressure plate; 24. lithium battery large surface clamping and fixing component; 241. second cylinder; 242. second pressure plate; 25. pad; 3. cutting mechanism; 31. tool holder; 32. cutting disc; 33. electric cylinder; 34. pulley; 35. dust cover; 351. U-shaped slot; 36. dust suction sleeve; 4. lithium battery. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] like Figure 1As shown, a semi-automatic shelling device for lithium batteries is used to cut lithium batteries 4, including a base mechanism 1, a movable pressing mechanism 2 and a cutting mechanism 3. The movable pressing mechanism 2 is arranged on the top of the base mechanism 1 and is slidably connected to the base mechanism 1. The movable pressing mechanism 2 is used to clamp and fix the lithium battery 4 and move it to the cutting position. The cutting mechanism 3 is arranged on the side of the base mechanism 1 and is used to cut the outer shell of the lithium battery 4.

[0028] The lithium battery 4 is placed in the mobile pressing mechanism 2 . After the mobile pressing mechanism 2 clamps and fixes the lithium battery 4 , the base mechanism 1 drives the mobile pressing mechanism 2 to move from the initial position to the position of the cutting mechanism 3 to cut the lithium battery 4 .

[0029] like Figure 2 The base mechanism 1 shown includes a fixed bracket 11, a linear module 12 and a guide rail slider 13. The linear module 12 is axially arranged at the top middle position of the fixed bracket 11, and the two groups of guide rail sliders 13 are axially arranged at the top of the fixed bracket 11 near the edge position.

[0030] The linear module 12 is connected to the bottom of the movable clamping mechanism 2, providing the power for the mechanism to move from its initial position to the cutting position. To reduce resistance to the movement of the movable clamping mechanism 2 on the base mechanism 1, two sets of guide rails 13 are provided. These two sets of guide rails 13 are positioned at the axial edges of the fixed bracket 11. The additional guide rails 13 also serve to stabilize the movement trajectory and prevent deviations in position and direction. For more even power distribution, the linear module 12 is optimally positioned in the center of the fixed bracket 11.

[0031] During operation, the switch of the linear module 12 is started. Driven by the moving end of the linear module 12, the mobile clamping mechanism 2 in the initial position moves closer to the cutting mechanism 3 as a whole, and stops when it reaches the set cutting position until the lithium battery 4 contacts the cutting mechanism 3, generating a cutting force effect.

[0032] like Figure 3 As shown, the movable pressing mechanism 2 includes a bottom plate 21, an L-shaped baffle 22, a lithium battery side clamping and fixing component 23, and a lithium battery large surface clamping and fixing component 24. The bottom plate 21 is slidably connected to the base mechanism 1, and the L-shaped baffle 22 is arranged on the top of the bottom plate 21. The lithium battery side clamping and fixing component 23 and the lithium battery large surface clamping and fixing component 24 are arranged on the top of the bottom plate 21 and are located on the inner side of the L-shaped baffle 22. The lithium battery side clamping and fixing component 23 is arranged on the long side of the L-shaped baffle 22, and the lithium battery large surface clamping and fixing component 24 is perpendicular to the short side of the L-shaped baffle 22.

[0033] The linear module 12 is connected to the bottom of the base plate 21 , and the base plate 21 is slidably connected to the guide rail sliders 13 of the base mechanism 1 along the axial end edges, so that the movable pressing mechanism 2 can move along the predetermined track.

[0034] The purpose of providing the L-shaped baffle 22 , the lithium battery side surface clamping and fixing component 23 and the lithium battery large surface clamping and fixing component 24 is to quickly clamp and fix the lithium battery 4 .

[0035] Because the lithium battery 4 is generally a rectangular parallelepiped, the side with a larger area of ​​the rectangular parallelepiped becomes the large surface, and the smaller area becomes the side surface. In the present invention, each time the lithium battery 4 is placed to press the side surface or the large surface, the mobile pressing mechanism 2 moves linearly once, and the cutting mechanism 3 contacts the surface of the lithium battery 4 once each time to complete a cut. A single battery needs to be placed in three different directions. After the three sides of the battery are cut, the battery is taken out, and the upper end of the battery is bent along the uncut surface with force to remove the core, completing the work.

[0036] like Figure 4 As shown, when cutting the side of the lithium battery 4, the lithium battery 4 needs to be placed on its side on the bottom plate 21 and close to the short side and long side of the L-shaped baffle 22. At this time, the lithium battery side clamping and fixing component 23 and the lithium battery large surface clamping and fixing component 24 are started to clamp and fix the side and large surface of the lithium battery 4 at the same time, waiting to enter the cutting process.

[0037] When cutting the large surface of the lithium battery 4, the lithium battery 4 needs to be placed upright on the bottom plate 21 and close to the short and long sides of the L-shaped baffle 22. At this time, you only need to start the lithium battery large surface clamping and fixing component 24 to clamp and fix the large surface of the lithium battery 4 and wait for the cutting process to begin.

[0038] The lithium battery side clamping and fixing component 23 includes a first cylinder 231 and a first pressure plate 232. The first cylinder 231 is connected to the first pressure plate 232. The first pressure plate 232 is arranged on the short side close to the L-shaped baffle 22, and the first cylinder 231 is arranged on the long side of the L-shaped baffle 22.

[0039] The lithium battery large surface clamping and fixing component 24 includes a second cylinder 241 and a second pressure plate 242. The second cylinder 241 is connected to the second pressure plate 242. The second pressure plate 242 is arranged on the side close to the short side of the L-shaped baffle 22. The second cylinder 241 is arranged on the top of the bottom plate 21.

[0040] When cutting the side of the lithium battery 4, after the lithium battery 4 is placed close to the L-shaped baffle 22, the first cylinder 231 starts to push the first pressure plate 232 to move until the side of the lithium battery 4 is pressed against and fixed. At the same time, the second cylinder 241 pushes the second pressure plate 242 to move until the large surface of the lithium battery 4 is pressed against and fixed. At this time, the clamping and fixation of the lithium battery 4 on the mobile clamping mechanism 2 is completed.

[0041] Similarly, when cutting the large surface of the lithium battery 4, after the lithium battery 4 is placed against the L-shaped baffle 22, the second cylinder 241 pushes the second pressure plate 242 to move until it abuts against the large surface of the lithium battery 4, thus completing the clamping and fixing of the lithium battery 4 on the movable clamping mechanism 2. Because the force-bearing area of ​​the second pressure plate 242 is large, when cutting the large surface, only the second cylinder 241 can be activated, or the first cylinder 231 and the second cylinder 241 can be activated simultaneously.

[0042] The movable pressing mechanism 2 further includes a raising plate 25 , and two of the raising plates 25 are spaced apart and arranged between the top of the bottom plate 21 and the bottom of the lithium battery large surface clamping and fixing component 24 .

[0043] In the process of the second cylinder 241 pushing the second pressure plate 242 to clamp the large surface of the lithium battery 4, in order to make the force more concentrated and uniform, it is necessary to add two raising plates 25 at the bottom of the second cylinder 241 so that the second pressure plate 242 can act on the center of the large surface of the lithium battery 4, and the clamping and fixing are more firm.

[0044] like Figure 5 As shown, the cutting mechanism 3 includes a tool holder 31, a cutting disc 32, an electric cylinder 33 and a pulley 34. The tool holder 31 includes a fixed end and a working end. The fixed end is arranged on the side of the base mechanism 1. The cutting disc 32 and the electric cylinder 33 are arranged at intervals on the working end of the tool holder 31. The cutting disc 32 is arranged at one end close to the movable pressing mechanism 2, and the pulley 34 is sleeved on the cutting disc 32 and the electric cylinder 33.

[0045] The fixed end of the tool holder 31 is fixed to the side of the base mechanism 1. When the movable pressing mechanism 2 moves to the cutting position, the working electric cylinder 33 drives the cutting disc 32 to rotate and cut through the pulley 34 to achieve the cutting operation.

[0046] The cutting mechanism 3 further includes a dust cover 35 and a dust suction sleeve 36 . The dust cover 35 is sleeved on the outside of the cutting disc 32 , and the dust suction sleeve 36 is communicated with the dust cover 35 .

[0047] During the cutting process, debris will be thrown out. The dust suction sleeve 36 arranged outside the cutting disc 32 can be connected to a dust suction device to quickly suck away the debris to ensure safety.

[0048] like Figure 6 As shown, the dust cover 35 includes a U-shaped slot 351 , and the U-shaped slot 351 is located at the contact and cutting position between the cutting blade 32 and the lithium battery 4 .

[0049] A U-shaped slot 351 is provided under the dust cover 35. On the one hand, this is to allow the blade of the cutting disc 32 to contact the lithium battery 4. On the other hand, this is to prevent the cutting disc 32 from being exposed to a large area and posing a safety hazard. On the other hand, different sizes of U-shaped slots 351 allow the exposed blades to be of different sizes, so as to facilitate cutting of lithium batteries 4 of different sizes. It is economical and convenient to cut lithium batteries 4 of different sizes by simply replacing the dust cover 35 with a different U-shaped slot 351.

[0050] The movable clamping mechanism 2 also includes a spacer block, which is mounted on top of the base plate 21 and contacts the short side of the L-shaped baffle 22. The spacer block can be used as needed. For smaller lithium batteries 4, the spacer block can be used to elevate the battery for a more secure clamping. This allows for compatibility with battery cell dimensions, allowing for the cutting of different cell sizes by simply adding a spacer block.

[0051] like Figure 7 As shown, the working principle of the present application is as follows: the side of the lithium battery 4 is placed in the movable clamping mechanism 2 and pressed against the L-shaped baffle 22. At this time, the first cylinder 231 is started to drive the first pressure plate 232 to move until it presses the side of the lithium battery 4, and the second cylinder 241 is started to drive the second pressure plate 242 to move until it presses the large surface of the lithium battery 4; then the power supply of the cutting mechanism 3 is started, and the electric cylinder 33 rotates through the pulley 34 to drive the cutting disc 32 to rotate; then the linear module 12 switch is started, and under the drive of the linear module 12, the movable clamping mechanism 2 moves as a whole from the initial position to the cutting mechanism 3 until the lithium battery 4 contacts the cutting disc 32, generating a cutting force effect, and the cut debris is sucked away and recycled by the vacuum cleaner connected to the dust suction sleeve 36. After the cutting is completed, the linear module 12 switch is turned off to move the clamping mechanism 2 back to the initial position, the first cylinder 231 and the second cylinder 241 switches are turned off, the first pressure plate 232 and the second pressure plate 242 are retreated, and the battery is taken out. Then change the large surface of the lithium battery 4 and press it tightly, repeat the above steps, cut the large surface of the lithium battery 4, and after completion, follow the above steps again to change to the side of the lithium battery 4 on the other side, press it and cut the side of the lithium battery 4. After the three sides of the lithium battery 4 are cut, take out the lithium battery 4, bend the upper end shell of the lithium battery 4 along the uncut surface, and then take out the core to complete the work.

[0052] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A semi-automatic lithium battery shelling device for cutting lithium batteries (4), characterized in that: The invention comprises a base mechanism (1), a movable pressing mechanism (2) and a cutting mechanism (3), wherein the movable pressing mechanism (2) is arranged on the top of the base mechanism (1) and is slidably connected to the base mechanism (1), the movable pressing mechanism (2) is used to clamp and fix a lithium battery (4) and move it to a cutting position, and the cutting mechanism (3) is arranged on the side of the base mechanism (1) and is used to cut the outer shell of the lithium battery (4); The movable pressing mechanism (2) comprises a bottom plate (21), an L-shaped baffle (22), a lithium battery side clamping and fixing component (23) and a lithium battery large surface clamping and fixing component (24); the bottom plate (21) is slidably connected to the base mechanism (1); the L-shaped baffle (22) is arranged on the top of the bottom plate (21); the lithium battery side clamping and fixing component (23) and the lithium battery large surface clamping and fixing component (24) are arranged on the top of the bottom plate (21) and located on the inner side of the L-shaped baffle (22); the lithium battery side clamping and fixing component (23) is arranged on the long side of the L-shaped baffle (22); and the lithium battery side clamping and fixing component (23) and the lithium battery large surface clamping and fixing component (24) are both perpendicular to the short side of the L-shaped baffle (22); The movable pressing mechanism (2) further includes a padding plate (25), wherein two padding plates (25) are spaced apart and arranged between the top of the bottom plate (21) and the bottom of the lithium battery large surface clamping and fixing component (24); When cutting the side of the lithium battery (4), the lithium battery (4) needs to be placed on its side on the bottom plate (21) and close to the short side and long side of the L-shaped baffle (22). At this time, the lithium battery side clamping and fixing component (23) and the lithium battery large surface clamping and fixing component (24) are activated to clamp and fix the side and large surface of the lithium battery (4) at the same time, waiting to enter the cutting process; When cutting the large surface of the lithium battery (4), the lithium battery (4) needs to be placed upright on the bottom plate (21) and closely attached to the short side and the long side of the L-shaped baffle (22). At this time, only the lithium battery large surface clamping and fixing component (24) needs to be activated to clamp and fix the large surface of the lithium battery (4) and wait for the cutting process to begin.

2. The semi-automatic shelling device for lithium batteries according to claim 1, characterized in that: The base mechanism (1) comprises a fixed bracket (11), a linear module (12) and a guide rail slider (13); the linear module (12) is axially arranged at a top middle position of the fixed bracket (11); and two groups of guide rail sliders (13) are axially arranged at top positions of the fixed bracket (11) near edges.

3. The semi-automatic shelling device for lithium batteries according to claim 1, characterized in that: The lithium battery side clamping and fixing component (23) comprises a first cylinder (231) and a first pressing plate (232), wherein the first cylinder (231) is connected to the first pressing plate (232), the first pressing plate (232) is arranged on a side close to the short side of the L-shaped baffle (22), and the first cylinder (231) is arranged on the long side of the L-shaped baffle (22).

4. The semi-automatic shelling device for lithium batteries according to claim 1, characterized in that: The lithium battery large-surface clamping and fixing component (24) comprises a second cylinder (241) and a second pressing plate (242), wherein the second cylinder (241) is connected to the second pressing plate (242), the second pressing plate (242) is arranged on a side close to the short side of the L-shaped baffle (22), and the second cylinder (241) is arranged on the top of the bottom plate (21).

5. The semi-automatic shelling device for lithium batteries according to claim 1, characterized in that: The cutting mechanism (3) includes a tool holder (31), a cutting disc (32), an electric cylinder (33) and a pulley (34); the tool holder (31) includes a fixed end and an operating end; the fixed end is arranged on the side of the base mechanism (1); the cutting disc (32) and the electric cylinder (33) are arranged at intervals on the operating end of the tool holder (31); the cutting disc (32) is arranged at one end close to the movable pressing mechanism (2); and the pulley (34) is sleeved on the cutting disc (32) and the electric cylinder (33).

6. The semi-automatic shelling device for lithium batteries according to claim 5, characterized in that: The cutting mechanism (3) further comprises a dust cover (35) and a dust suction sleeve (36); the dust cover (35) is sleeved on the outside of the cutting disc (32); and the dust suction sleeve (36) is in communication with the dust cover (35).

7. The semi-automatic shelling device for lithium batteries according to claim 6, characterized in that: The dust cover (35) comprises a U-shaped slot (351), and the U-shaped slot (351) is located at the contact and cutting position between the cutting disc (32) and the lithium battery (4).

8. The semi-automatic shelling device for lithium batteries according to claim 1, characterized in that: The movable pressing mechanism (2) further comprises a padding block, which is arranged on the top of the bottom plate (21) and contacts the short side of the L-shaped baffle (22).

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