Shell dismounting device for defective battery

Abstract

The utility model provides a shell dismounting device for defective batteries. The shell dismounting device comprises a die holder and a cutting assembly, the die holder is provided with an accommodating cavity for placing defective batteries; the accommodating cavity is provided with a guide groove penetrating to the outer wall of the die holder; the cutting assembly comprises a cutter and a cutting driving part; the cutter is inserted into the guide groove through the outer wall of the die holder and can move along the guide groove so as to be switched between an extending position inserted into the containing cavity and a retracting position pulled out of the containing cavity. The cutting driving piece is connected with the cutter to drive the cutter to be switched between the extending position and the retracting position. When the shell dismounting device for the defective battery is used, the defective battery is only required to be placed in the accommodating cavity of the die holder, and the cutting knife of the cutting assembly is automatically inserted into the accommodating cavity along the guide groove, so that the seam of the shell can be cut, and the operation is simple, efficient, accurate and safe.

Description

Technical Field

[0001] This utility model relates to a device for disassembling the casing of defective batteries. Background Technology

[0002] Some rechargeable batteries use a pouch lithium battery encapsulated in a housing, which includes an upper housing and a lower housing, and the assembly gap between the upper housing and the lower housing is joined by ultrasonic welding.

[0003] When defective products are found during the battery production process and the casing needs to be disassembled, the defective products are usually fixed with clamps, and then the seams around the casing are cut one by one by manual using an electrothermal knife to separate the upper and lower casings. This disassembly operation is cumbersome, inefficient, and has low accuracy and high risk factor due to manual alignment. Utility Model Content

[0004] The purpose of this utility model is to provide a casing removal device for defective batteries, including a mold base and a cutting assembly; the mold base is provided with a receiving cavity for placing defective batteries; the receiving cavity is provided with a guide groove extending through the outer wall of the mold base; the cutting assembly includes a cutter and a cutting drive; the cutter is inserted into the guide groove through the outer wall of the mold base and can move along the guide groove to switch between an extended position inserted into the receiving cavity and a retracted position withdrawn from the receiving cavity; the cutting drive is connected to the cutter to drive the cutter to switch between the extended position and the retracted position.

[0005] The battery casing disassembly device of this utility model is simple, efficient, accurate and safe to use. When using it, simply place the defective battery in the receiving cavity of the mold base, and the cutter of the cutting component will automatically insert into the receiving cavity along the guide groove to complete the cutting of the casing seam. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the cutter of this utility model when it is in the retracted position.

[0007] Figure 2 This is a schematic diagram of the cutter of this utility model in the extended position.

[0008] Figure 3 This is a schematic diagram of the structure of the mold base and worktable of this utility model.

[0009] Figure 4 This is a schematic diagram of the cutting component of this utility model.

[0010] Figure 5 This is a top view of the cutter of this utility model in the extended position.

[0011] Figure 6 This is a diagram showing the usage state of this utility model.

[0012] Figure 7 This is a cross-sectional view of the cutter of this utility model when it is in the retracted position.

[0013] Figure 8 for Figure 7 Enlarged view of part A in the middle.

[0014] Figure 9 This is a cross-sectional view of the cutter of this utility model in the extended position.

[0015] Figure 10 for Figure 9 Enlarged view of section B in the middle.

[0016] Figure 11 This is a structural schematic diagram of a defective battery according to this utility model. Detailed Implementation

[0017] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution:

[0018] See appendix Figure 1-11 A device for disassembling the casing of defective batteries includes a mold base 1, a cutting assembly 2, and a worktable 3.

[0019] The defective battery 4 includes a casing 40, which includes an upper casing 41 and a lower casing 42, with an ultrasonically welded seam 43 between the upper casing 41 and the lower casing 42.

[0020] The mold base 1 is provided with a receiving cavity 11 for placing the defective battery 4; the receiving cavity 11 is provided with a guide groove 12 extending through to the outer wall of the mold base 1; the position of the guide groove 12 corresponds to the position of the seam 43 of the outer shell 40 of the defective battery placed in the receiving cavity 11.

[0021] The cutting assembly 2 is located on the periphery of the mold base 1. The cutting assembly 2 includes a cutter 21 and a cutting drive 22. The cutter 21 is inserted into the guide groove 12 through the outer wall of the mold base 1 and can move along the guide groove 12 to switch between an extended position inserted into the receiving cavity 11 and a retracted position withdrawn from the receiving cavity 11. The cutting drive 22 is connected to the cutter 21 to drive the cutter 21 to switch between the extended position and the retracted position.

[0022] When using the casing disassembly device of this technical solution, simply place the defective battery in the receiving cavity 11 of the mold base 1, and the cutter 21 of the cutting component 2 will automatically insert into the receiving cavity 11 along the guide groove 12 to complete the cutting of the casing seam. The operation is simple, efficient, accurate and safe.

[0023] The receiving cavity 11 includes four surrounding sidewalls 111, and at least three sidewalls 111 are provided with the guide grooves 12; each guide groove 12 extends along the length direction of the sidewall 111; the number of cutting components 2 corresponds to the number of guide grooves 12, and the cutter 21 of each cutting component 2 is opposite to each guide groove 12.

[0024] The battery casing is generally rectangular, with seams on the four sides. To disassemble, the upper and lower casings can be separated by cutting along three of the seams and then prying them open with a little force.

[0025] This technical solution allows for the simultaneous cutting of multiple seams in a single operation, making it highly efficient and fast.

[0026] The cutter 21 has a blade 211. When the cutter 21 is in the extended position, it is inserted into the receiving cavity 11 so that the blade 211 of the cutter 21 is inserted into the receiving cavity 11 to cut the seam 43 of the outer shell 40.

[0027] The cutting drive component 22 includes a fixed part 221 and a movable part 222. The fixed part 221 is fixed relative to the mold base 1. The rear end of the movable part 222 is connected to the fixed part 221 and can move radially relative to the fixed part 221. A connecting seat 223 is fixedly connected to the front end of the movable part 222. The cutter 21 is fixed on the connecting seat 223. The front end of the connecting seat 223 abuts against the outer wall of the mold base 1 when the cutter 21 is in the extended position to limit the extension distance of the cutter 21, accurately cut the outer shell 40, and avoid damaging the battery pouch 44 inside the outer shell 40.

[0028] The mold base 1 is fixed on the workbench 3; the workbench 3 is provided with a fixing plate 31; the number of fixing plates 31 corresponds to the number of cutting components 2; the fixing plate 31 is provided with a through hole 32; the fixing part 221 of the cutting drive component 22 is fixedly connected to the fixing plate 31 by screws, and the movable part 222 passes through the through hole 32.

[0029] In this technical solution, the fixed part 221 of the cutting drive component 22 is fixed and limited by the fixed plate 31, and the movable part 222 is guided and limited by the through hole 32, which can improve the working stability of the cutter 21.

[0030] The cutting drive component 22 is a cylinder; the fixed part 221 is the cylinder body of the cylinder, and the movable part 222 is the piston rod of the cylinder.

[0031] Among the four side walls 111, a clearance groove 13 is provided at the corner where two adjacent side walls 111 intersect, and the clearance groove 13 is connected to the guide groove 12 on the two adjacent side walls 111.

[0032] In this embodiment, the clearance groove 13 is arc-shaped.

[0033] The clearance groove 13 can accommodate the corner of the casing 40 of the defective battery and creates a gap between it and the corner of the casing 40 to prevent excessive friction between the corner of the casing 40 and the receiving cavity 11 during the cutting process.

[0034] When the cutter 21 is in the extended position, its end extends out of the clearance groove 13.

[0035] One side wall 111 of the receiving cavity 11 is provided with a clearance notch 14 to facilitate the removal of defective battery 4.

[0036] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A device for disassembling the casing of a defective battery, comprising a mold base and a cutting assembly; characterized in that: The mold base has a receiving cavity for placing defective batteries; the receiving cavity has a guide groove extending through the outer wall of the mold base; the cutting assembly includes a cutter and a cutting drive; the cutter is inserted into the guide groove through the outer wall of the mold base and can move along the guide groove to switch between an extended position inserted into the receiving cavity and a retracted position withdrawn from the receiving cavity; the cutting drive is connected to the cutter to drive the cutter to switch between the extended position and the retracted position.

2. The battery casing disassembly device according to claim 1, characterized in that: The receiving cavity includes four surrounding sidewalls, and at least three sidewalls are provided with the guide grooves; each guide groove extends along the length of its respective sidewall; the number of cutting components corresponds to the number of guide grooves, and the cutter of each cutting component is opposite to each guide groove.

3. The battery casing disassembly device according to claim 2, characterized in that: The cutter has a blade, and when the cutter is in the extended position, it is inserted into the receiving cavity, meaning the blade of the cutter is inserted into the receiving cavity.

4. The battery casing disassembly device according to claim 3, characterized in that: The cutting drive includes a fixed part and a movable part; the fixed part is fixed relative to the mold base, the rear end of the movable part is connected to the fixed part and can move radially and retract relative to the fixed part; the front end of the movable part is fixedly connected to a connecting seat, the cutter is fixed on the connecting seat, and the front end of the connecting seat abuts against the outer wall of the mold base when the cutter is in the extended position.

5. The battery casing disassembly device according to claim 4, characterized in that: It also includes a worktable; the mold base is fixed on the worktable; the worktable is provided with a fixing plate; the number of fixing plates corresponds to the number of cutting components; the fixing plate is provided with a through hole; the fixing part of the cutting drive component is fixedly connected to the fixing plate, and the movable part passes through the through hole.

6. The casing disassembly device for defective batteries according to claim 4 or 5, characterized in that: The cutting drive component is a cylinder; the fixed part is the cylinder body of the cylinder, and the movable part is the piston rod of the cylinder.

7. The battery casing disassembly device according to claim 2, characterized in that: Among the four side walls, a clearance groove is provided at the corner where two adjacent side walls intersect, and the clearance groove is connected to the guide groove on the two adjacent side walls.

8. The battery casing disassembly device according to claim 2, characterized in that: One side wall of the receiving cavity is provided with an air-proof opening.

Images