Soft package battery ultrasonic welding dust removal device

Abstract

The utility model relates to the technical field of lithium battery dust removal, in particular to a soft package battery ultrasonic welding dust removal device which comprises a shell, a dust removal assembly is arranged in the shell, a coating opening is formed in one end of the shell, and the dust removal assembly comprises a base and a dust suction box. The dust collection box is communicated with the coating opening and is detachably connected with the base; wherein the device further comprises a brush roller used for cleaning a tab, and a transmission assembly used for driving the brush roller to rotate is arranged at the bottom of the base, so that metal particles in a brush can be effectively prevented from entering a battery cell to cause badness, the reject ratio of the battery cell is reduced, and the metal particles in a crack of the battery cell can be effectively adsorbed out; the safety performance of the battery cell is further improved, the safety performance and the production line yield of the battery cell can be effectively improved, in addition, the dust collection box can be disassembled and assembled through the elastic clamping jaw, the brush roller can be conveniently cleaned and replaced, and the dust collection effect is prevented from being influenced by dust accumulation and brush deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery dust removal, in particular to an ultrasonic welding dust removal device for soft-pack batteries. Background Art

[0002] Tab welding is an important process in the assembly process of soft-pack battery cells. The current collector and the tab are welded together through ultrasonic welding. However, a lot of welding slag will be generated during the ultrasonic welding operation. The welding slag debris can easily enter the battery cell, resulting in poor Hi-pot of the battery cell. In addition, the welding slag temperature is high and it is easy to adhere to the tab glue.

[0003] Therefore, an ultrasonic welding dust removal device for soft-pack batteries is proposed to clean floating impurities. For example, the prior art Chinese patent announcement number "CN208449990U" discloses a pole piece powder brushing and dust collection device, including a powder box mounting seat, a front end of the powder box mounting seat is provided with two powder suction boxes extending in the longitudinal direction, the two powder suction boxes are spaced apart in the transverse direction, and the gap between the two powder suction boxes constitutes a guide groove for pole piece powder brushing and dust collection, and a pole piece and pole ear guide plate is provided at the longitudinal front end of the guide groove to guide the pole piece and the pole ear to follow the pole piece to move along the guide groove; a brush wheel is provided in the powder suction box Two mutually meshing brush synchronous gears are set at the ends of the two powder suction boxes away from the guide pieces of the pole pieces and pole ears. Each brush synchronous gear is connected to a corresponding brush wheel. One of the two brush synchronous gears is connected to the driving device. The driving device drives the two brush synchronous gears to mesh and rotate, and matches the two brush wheels to rotate and roll to squeeze the pole pieces transported along the guide groove, and brush the dust on the pole pieces to the lower part of the powder suction box; a vacuum pipe connected to the powder collector is set at the lower part of the powder suction box, and the dust brushed into the powder suction box is output along the vacuum pipe to the powder collector, matching the pole piece brushing and dust collection.

[0004] However, in actual operation, it is inconvenient to disassemble and assemble the dust box, which makes it inconvenient to clean and replace the brush. After long-term use, the dust accumulation and deformation of the brush may lead to reduced dust removal quality and efficiency. Utility Model Content

[0005] The purpose of the utility model is to solve the disadvantage in the prior art that the brush is inconvenient to clean and replace, and to propose a soft-pack battery ultrasonic welding dust removal device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A soft-pack battery ultrasonic welding dust removal device is designed, comprising a housing, a dust removal assembly disposed within the housing, and a covering opening formed at one end thereof. The dust removal assembly comprises a base and a dust collection box, the dust collection box being in communication with the covering opening and being detachably connected to the base.

[0008] It also includes a brush roller for cleaning the tabs, and a transmission assembly for driving the brush roller to rotate is provided at the bottom of the base.

[0009] Furthermore, a pair of dust collection boxes are arranged opposite to each other, with a gap between the pair of dust collection boxes for the movement of the tabs, and guide grooves are formed on both sides of the gap. Openings are provided on the opposite sides of the pair of dust collection boxes, and both are connected to the dust collection device through the air duct.

[0010] Furthermore, the bottom of the dust collection box has an elastic claw, and a guide portion is provided on the opposite side of the elastic claw. The end surface of the base is provided with a slot that is compatible with the elastic claw and the guide portion, and the elastic claw is engaged with the slot.

[0011] Furthermore, the transmission assembly includes a motor and a transmission gear, a pair of brush rollers are rotatably connected to the dust box, and the ends of the brush rollers are both passed through the base and fixed with the transmission gear, and the pair of transmission gears are engaged and rotated;

[0012] Wherein, the motor is fixed to the bottom of the base and fixedly connected to one of the brush roller shaft ends.

[0013] Furthermore, a guide block is provided on the side of the dust collection box, and a guide groove is provided on the inner wall of the covering opening. The guide block is slidably connected to the guide groove and a positioning glass bead is embedded on the side, and the positioning glass bead contacts the inner wall of the covering opening.

[0014] Furthermore, a connecting seat is fixed on the side of the shell, and a clearance groove is provided for avoiding the air guide pipe.

[0015] The utility model proposes an ultrasonic welding dust removal device for soft-pack batteries, which has the following beneficial effects: the utility model adopts a full-enclosed adsorption cleaning method, and uses the covering port to cover one end of the lithium battery, which can effectively prevent the metal particles inside the brush from entering the battery cell and causing defects, thereby reducing the defective rate of the battery cell, and can effectively adsorb the metal particles in the gaps of the battery cell, further improving the safety performance of the battery cell, and can effectively improve the safety performance of the battery cell and the production line quality rate. In addition, the dust box can be disassembled and assembled through the elastic claws, which is convenient for cleaning and replacing the brush roller, avoiding dust accumulation and brush deformation affecting the dust removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of area A;

[0018] Figure 3 This is a schematic diagram of the structure of the transmission assembly of the utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of area B;

[0020] Figure 5 This is a cross-sectional view of a new type of practical dust collection box.

[0021] In the figure: 1. Shell; 11. Covering opening; 12. Yield groove; 2. Dust removal assembly; 21. Base; 22. Dust collection box; 221. Slot; 222. Guide part; 223. Guide block; 224. Positioning glass beads; 23. Brush roller; 24. Guide groove; 25. Elastic claw; 3. Transmission assembly; 31. Motor; 32. Transmission gear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-5 A soft-pack battery ultrasonic welding dust removal device includes a housing 1, a dust removal assembly 2 is provided inside the housing 1, and a covering opening 11 is opened at one end of the housing 1. The dust removal assembly 2 includes a base 21 and a dust collection box 22. The dust collection box 22 is in communication with the covering opening 11 and is detachably connected to the base 21.

[0024] It also includes a brush roller 23 for cleaning the tabs, and a transmission assembly 3 for driving the brush roller 23 to rotate is provided at the bottom of the base 21.

[0025] It should be added that the covering port 11 is used to cover the end of the lithium battery with the pole ear, and adopts a full-enclosed adsorption cleaning method to effectively prevent the metal particles inside the brush from entering the battery cell and causing defects.

[0026] Furthermore, a pair of dust collection boxes 22 are arranged opposite to each other, a gap is left between the pair of dust collection boxes 22 for the movement of the pole ears, and guide grooves 24 are formed by depressions on both sides of the gap. Openings are provided on the opposite sides of the pair of dust collection boxes 22, and both are connected to the outside of the dust collection device through the air duct.

[0027] Specifically, the dust collection device is a vacuum pump, which generates negative pressure in the dust collection box 22 and cooperates with the brush roller 23 to clean the floating impurities on the surface of the tab.

[0028] Furthermore, the bottom of the dust collector 22 has an elastic claw 25, and a guide portion 222 is located on the opposite side of the elastic claw 25. The end face of the base 21 is provided with a slot 221 that is compatible with the elastic claw 25 and the guide portion 222, and the elastic claw 25 is engaged with the slot 221.

[0029] It is worth mentioning that the free end of the elastic claw 25 has a hook claw, one side of the hook claw has a guiding slope, and an L-shaped structure is formed between the hook claw and the elastic claw 25. In addition, the elastic claw 25 is preferably made of plastic or rubber, and uses its own plastic deformation characteristics to fix or unlock the card slot 221 by squeezing and deforming.

[0030] The guide portion 222 cooperates with the elastic claw 25 to provide a limiting function for the dust box 22 to prevent the dust box 22 from being unstable. Of course, the elastic claw 25 also cooperates with the guide portion 222 to axially lock the dust box 22.

[0031] In more detail, the transmission assembly 3 includes a motor 31 and a transmission gear 32. A pair of brush rollers 23 are rotatably connected to the dust box 22, and the ends of the brush rollers are both passed through the base 21 and fixed with the transmission gear 32. The pair of transmission gears 32 are engaged and rotated.

[0032] The motor 31 is fixed to the bottom of the base 21 and is fixedly connected to the shaft end of one of the brush rollers 23. A pair of the brush rollers 23 rotate relative to each other under the action of a pair of transmission gears 32, and cooperate with the vacuum pump to remove dust from the tabs.

[0033] In general, a guide block 223 is provided on the side of the dust collection box 22, and a guide groove is provided on the inner wall of the covering opening 11. The guide block 223 is slidably connected to the guide groove and a positioning glass bead 224 is embedded on the side. The positioning glass bead 224 contacts the inner wall of the covering opening 11.

[0034] It is worth mentioning that the shell 1 is symmetrically arranged, with one side connected to the covering opening 11 and the other side forming a notch for accommodating the base 21, and a gap is formed between the covering openings 11 on both sides, through which the positioning glass beads 224 are pressed against and retracted, thereby unlocking the base 21.

[0035] Finally, a connecting seat is fixed on the side of the shell 1, and a clearance groove 12 is provided for avoiding the air duct. The air duct and the dust collection box 22 can be connected by a quick-release connector, which is convenient for disassembly and assembly.

[0036] Working mode: When working, the tab is inserted between a pair of dust collection boxes 22 through the guide groove 24 and the opening, and the end of the motor with the tab is arranged in the covering opening 11, forming a fully covered dust removal. Then, the motor 31 drives the pair of brush rollers 23 to rotate using a pair of transmission gears 32, and then cooperates with the vacuum pump to clean the tab;

[0037] When the brush roller 23 needs to be cleaned and replaced, the positioning glass bead 224 is abutted against the clearance of the covering opening 11 to retract it, the base 21 is unlocked, and the elastic claw 25 is abutted and squeezed to disengage the elastic claw 25 from the slot, and the dust collection box 22 is disassembled.

[0038] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soft-pack battery ultrasonic welding dust removal device, comprising a housing (1), characterized in that: A dust removal assembly (2) is provided inside the housing (1), and a covering opening (11) is provided at one end thereof. The dust removal assembly (2) comprises a base (21) and a dust collection box (22). The dust collection box (22) is in communication with the covering opening (11) and is detachably connected to the base (21). It also includes a brush roller (23) for cleaning the tabs, and a transmission assembly (3) for driving the brush roller (23) to rotate is provided at the bottom of the base (21).

2. The soft-pack battery ultrasonic welding dust removal device according to claim 1, characterized in that: A pair of dust collection boxes (22) are arranged opposite to each other, a gap is left between the pair of dust collection boxes (22) for the tabs to move, and guide grooves (24) are formed on both sides of the gap. Openings are provided on opposite sides of the pair of dust collection boxes (22), and both are connected to a dust collection device through an air duct.

3. The soft pack battery ultrasonic welding dust removal device according to claim 1, characterized in that: The bottom of the dust collection box (22) is provided with an elastic claw (25), and a guide portion (222) is provided on the opposite side of the elastic claw (25); the end surface of the base (21) is provided with a slot (221) adapted to the elastic claw (25) and the guide portion (222); the elastic claw (25) is engaged with the slot (221).

4. The ultrasonic welding dust removal device for soft-pack batteries according to claim 1, characterized in that: The transmission assembly (3) includes a motor (31) and a transmission gear (32); a pair of brush rollers (23) are rotatably connected to the dust collection box (22); and the ends of the brush rollers are both provided with the base (21) and fixed with the transmission gear (32); the pair of transmission gears (32) are engaged and rotated; The motor (31) is fixed to the bottom of the base (21) and is fixedly connected to the shaft end of one of the brush rollers (23).

5. The soft pack battery ultrasonic welding dust removal device according to claim 1, characterized in that: A guide block (223) is provided on the side of the dust collection box (22), and a guide groove is provided on the inner wall of the covering opening (11). The guide block (223) is slidably connected to the guide groove and a positioning glass bead (224) is embedded on the side. The positioning glass bead (224) contacts the inner wall of the covering opening (11).

6. The soft pack battery ultrasonic welding dust removal device according to claim 1, characterized in that: A connecting seat is fixed to the side surface of the housing (1), and a clearance groove (12) is provided for avoiding the air guide pipe.

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