Coating and tape splicing tool for secondary battery

Abstract

The utility model discloses a secondary battery coating tape splicing tool which comprises a connecting pipe, a first tape pulling unit and a second tape pulling unit are arranged on the connecting pipe at intervals, and a tape clamping and pressing unit is arranged between the first tape pulling unit and the second tape pulling unit. The first belt pulling unit and the second belt pulling unit move the coating pole pieces with the two broken belts to the belt clamping and pressing unit, and broken belt connection is achieved through the belt clamping and pressing unit. The coating tape splicing tool for the secondary battery has the characteristics of high production efficiency, good safety and low cost.

Description

Technical Field

[0001] The utility model relates to a secondary battery, in particular to a secondary battery coating and tape-joining tool. Background Art

[0002] In the manufacturing process of secondary batteries, the coating process is an important process, and its production efficiency affects the overall battery manufacturing efficiency. Its working principle is to continuously and evenly coat the battery slurry on the current collector such as copper foil or aluminum foil through the coating machine head, and then form the battery pole piece after drying in a high-temperature oven. Its overall operation process: first, mix the main electrode material and solvent to form the electrode slurry; then pour it into the material tank, and when the current collector enters the material tank in sequence, the electrode slurry can be evenly attached to its surface; then, enter the high-temperature oven to dry it to form the battery pole piece.

[0003] At present, when the coating machine is coating the current collector, abnormal factors often occur, causing the current collector to break in the high-temperature oven. Specifically, the uneven tension caused by motor aging, wheel wear, etc. causes the break; improper operation by the operator causes uneven coating, causing the break; uneven surface, many tension lines, uneven tension, causing the break; the temperature of the day box is too high, the pole piece is baked and cracked, and the uneven tension causes the break; if the fluid surface is uneven, after the slurry is coated, the uneven tension in the high-temperature oven causes the break.

[0004] When the pole piece breaks, the operator needs to turn off the oven heating system first, open the oven door to cool down the oven, and finally take out the broken tape and then connect it. The oven needs to be heated again for coating. The breakage of the collector will directly lead to production interruption, greatly reducing production efficiency. At the same time, connecting tapes in a high-temperature oven increases the risk of manual injury. Utility Model Content

[0005] The utility model aims to provide a secondary battery coating and tape splicing tool, which has the characteristics of high production efficiency, good safety and low cost.

[0006] The utility model can be realized by the following technical solutions:

[0007] The utility model discloses a secondary battery coating and tape connection tool, comprising a connecting tube, wherein a first drawing belt unit and a second drawing belt unit are arranged at intervals on the connecting tube, a clamping and pressing unit is arranged between the first drawing belt unit and the second drawing belt unit, and the first drawing belt unit and the second drawing belt unit respectively move the coating pole pieces of two broken tapes to the clamping and pressing unit to realize the connection of the broken tapes by the clamping and pressing unit.

[0008] Furthermore, the first belt-drawing unit, the belt clamping unit, and the second belt-drawing unit can be detachably and movably arranged on the connecting pipe. The detachable arrangement facilitates assembly; the movable mode allows flexible movement according to the broken belt position to meet the belt connection requirements.

[0009] Furthermore, the first drawstring unit and the second drawstring unit have the same structure, which simplifies the manufacturing process of the structure and simplifies the operation without distinguishing them during use.

[0010] Furthermore, the first drawing unit includes a sealed air cylinder and a vacuum rod, and a plurality of adsorption holes are arranged on the side of the sealed air cylinder. The vacuum rod is stretched in the sealed air cylinder to form a negative pressure in the adsorption holes to adsorb the broken coated electrode. During use, the broken electrode is adsorbed and attached to the surface of the adsorption hole by stretching the vacuum rod, so that the broken electrode is conveniently and effectively moved out of the oven for splicing, avoiding high temperature risks.

[0011] Furthermore, the clamping and pressing unit includes a connecting rod, the other end of which is connected to a tape placement plate, and a clamping plate is provided on the tape placement plate, through which the broken coated pole pieces are pressed together on the tape placement plate and the tapes are bonded together by the tape on the tape placement plate. During the clamping and pressing process, the tape is placed on the tape placement plate, the broken pole piece is bonded to the adhesive layer, and the flatness and uniform force at the joint are achieved by the clamping of the clamping plate, thereby ensuring the reliability of the joint.

[0012] Furthermore, the air extraction rod and the connecting rod are both movably arranged on the connecting pipe through a movable buckle. The movable buckle arrangement is adopted to facilitate the moving operation.

[0013] Furthermore, the positions of the adsorption holes and the tape placement plate are spaced correspondingly to avoid operational inconvenience caused by position fluctuations.

[0014] Furthermore, the width of the tape placement plate is greater than the width of the clamping plate, thereby ensuring that the clamping plate and the tape placement plate are fully and firmly pressed together.

[0015] Furthermore, the secondary battery is a sodium ion battery or a lithium ion battery, so as to meet the process requirements of different types of secondary batteries.

[0016] Furthermore, the coated electrode is a positive electrode or a negative electrode, which has good process applicability.

[0017] The utility model discloses a secondary battery coating and tape splicing tool, which has the following beneficial effects:

[0018] First, the production efficiency is high. When the tape is broken in the coating oven, there is no need to wait for a long time for the oven to cool down. It is only necessary to find the interfaces at both ends of the current collector, and the first and second tape drawing units pull the two ends to the clamping and pressing unit for upper and lower pressing and bonding. This not only effectively improves the production efficiency, but also ensures one-time firm bonding by upper and lower pressing and bonding.

[0019] Second, it is safe. In the process of electrode coating, in order to ensure that the slurry is dried in the oven and does not affect the performance of the electrode, especially the positive electrode material, the oven temperature is higher than 120°C. The tape splicing tool of the utility model can pull the broken tape out and splice it outside the high-temperature oven, effectively reducing the risk of burns.

[0020] Third, the cost is low. The utility model has a simple structure and all its components are conventional structural parts. It does not require complicated manufacturing processes and has strong applicability. Moreover, during operation, there is no need to frequently start and stop the high-temperature oven to cause excessive energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 This is a schematic diagram of the exploded structure of a secondary battery coating and tape splicing tool of the utility model;

[0022] The marks in the accompanying drawings include: 100, connecting tube; 200, first drawstring unit; 201, sealed air cylinder; 202, adsorption air hole; 203, vacuum pull rod; 204, movable buckle; 300, clamping and pressing unit; 301, connecting rod; 302, tape placement plate; 303, clamping plate; 400, second drawstring unit. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with embodiments.

[0024] like Figure 1 As shown, the utility model discloses a secondary battery coating and splicing tool, including a connecting tube 100, wherein the connecting tube 100 is provided with a first drawing unit 200 and a second drawing unit 400 at intervals, and a clamping and pressing unit 300 is provided between the first drawing unit 200 and the second drawing unit 400. The first drawing unit 200 and the second drawing unit 400 respectively move the coated pole pieces of two broken strips to the clamping and pressing unit 300, and the broken strips are connected by the clamping and pressing unit 300.

[0025] In the present invention, in order to have higher applicability, the first drawstring unit 200, the clamping and pressing unit 300, and the second drawstring unit 400 can be detachably and movably arranged on the connecting pipe. In order to meet the universality of structural assembly, the first drawstring unit 200 and the second drawstring unit 400 have the same structure.

[0026] In the present utility model, in terms of specific structure, the first drawing unit 200 includes a sealed air cylinder 201 and a vacuum rod 203. The sealed air cylinder 201 is provided with a plurality of adsorption holes 202 on its side. The vacuum rod 203 is stretched on the sealed air cylinder 201 to form a negative pressure in the adsorption holes 202 to adsorb the broken coated electrode. The entrainment and pressing unit 300 includes a connecting rod 301. The other end of the connecting rod 301 is connected to a tape placement plate 302. The tape placement plate 302 is provided with a clamping plate 303. The broken coated electrode is pressed together on the tape placement plate 302 through the clamping plate 303 and the tape is bonded by the tape on the tape placement plate 302. The vacuum rod 203 and the connecting rod 301 are both movably arranged on the connecting pipe through a movable buckle 204.

[0027] In the utility model, in order to achieve operability and reliability of tape splicing, the positions of the adsorption air holes and the tape placement plate are spaced correspondingly, and the width of the tape placement plate is greater than the width of the clamping plate.

[0028] In a specific application scenario, the secondary battery is a sodium ion battery or a lithium ion battery. Specifically, the coated electrode is a positive electrode or a negative electrode.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The above embodiments are only specific embodiments of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, and these obvious replacement forms all belong to the protection scope of the present invention.

Claims

1. A secondary battery coating and splicing tool, comprising a connecting tube, characterized in that: The connecting tube is provided with a first drawing unit and a second drawing unit at intervals, and a clamping and pressing unit is provided between the first drawing unit and the second drawing unit. The first drawing unit and the second drawing unit respectively move the coated pole pieces of the two broken tapes to the clamping and pressing units to realize the connection of the broken tapes by the clamping and pressing units.

2. The secondary battery coating and splicing tool according to claim 1, characterized in that: The first drawstring unit, the clamping and pressing unit, and the second drawstring unit can all be detachably and movably arranged on the connecting pipe.

3. The secondary battery coating and splicing tool according to claim 2, characterized in that: The first drawstring unit and the second drawstring unit have the same structure.

4. The secondary battery coating and splicing tool according to claim 3, characterized in that: The first belt-drawing unit comprises a sealed air cylinder and a vacuum rod. A plurality of adsorption holes are arranged on the side of the sealed air cylinder. The vacuum rod is stretched in the sealed air cylinder so that the adsorption holes form negative pressure to adsorb the broken coated electrode.

5. The secondary battery coating and splicing tool according to claim 4, characterized in that: The clamping and pressing unit includes a connecting rod, the other end of which is connected to a tape placement plate, and a clamping plate is provided on the tape placement plate. The broken coated pole pieces are pressed together on the tape placement plate through the clamping plate and the tapes are bonded together by the tape on the tape placement plate.

6. The secondary battery coating and splicing tool according to claim 5, characterized in that: The air extraction rod and the connecting rod are both movably arranged on the connecting pipe by moving the buckle.

7. The secondary battery coating and splicing tool according to claim 6, characterized in that: The adsorption pores and the tape placement plate are spaced correspondingly from each other.

8. The secondary battery coating and splicing tool according to claim 7, characterized in that: The width of the tape placement plate is greater than the width of the tape clamping plate.

9. The secondary battery coating and splicing tool according to claim 1, characterized in that: The secondary battery is a sodium ion battery or a lithium ion battery.

10. The secondary battery coating and splicing tool according to claim 1, characterized in that: The coated electrode is a positive electrode or a negative electrode.

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