Lithium battery winding machine with built-in laser etching function

Abstract

The utility model provides a lithium battery winding machine with a built-in laser etching function, which comprises a positive plate processing mechanism, a negative plate processing mechanism, a winding mechanism and a shell, and the positive plate processing mechanism, the negative plate processing mechanism and the winding mechanism are all arranged in the shell; a positive plate output by the positive plate processing mechanism and a negative plate output by the negative plate processing mechanism enter the winding mechanism to be wound; the negative pole piece processing mechanism comprises a negative pole material roll, a laser etching assembly and a laser die cutting assembly, and a negative pole piece on the negative pole material roll sequentially passes through the laser etching assembly and the laser die cutting assembly and then enters the winding mechanism. According to the utility model, a battery process pole piece etching process is added for the negative pole piece, so that a plurality of battery cell manufacturing processes can be combined, the number of different machine tables is reduced, the occupied space of a battery cell production plant is reduced, integrated transportation, carrying and installation are facilitated, the plant layout is greatly simplified, and two manpower of one machine per shift is reduced.

Description

Technical Field

[0001] The utility model relates to the field of lithium battery winding machines, in particular to a lithium battery winding machine with a built-in laser etching function. Background Art

[0002] One of the technical parameters of lithium batteries is the energy conversion speed, which is often referred to as fast charging and discharging. In order to increase the energy conversion speed, the negative electrode sheet is usually etched to increase the surface area of ​​the negative electrode sheet and the electrolyte capacity, thereby achieving the purpose of increasing the parameter conversion speed.

[0003] Lithium battery bare cell winding machines are generally used to wind the positive and negative electrode sheets and separators, affix finishing glue, and then unload and load them onto trays. However, conventional lithium battery bare cell winding machines in the prior art first etch the negative electrode sheet on the outside, and then use the lithium battery bare cell winding machine to wind the etched negative electrode sheet, which requires the use of additional etching equipment (laser scribing machine). Therefore, a large number of machines are used in the production process, which occupies the space of the battery production plant, complicates the layout of the plant, and also increases the corresponding manpower, transportation, and handling costs. Utility Model Content

[0004] The utility model provides a lithium battery winding machine with a built-in laser etching function to solve at least one of the above technical problems.

[0005] To solve the above problems, as one aspect of the utility model, a lithium battery winding machine with a built-in laser etching function is provided, comprising: a positive electrode sheet processing mechanism, a negative electrode sheet processing mechanism, a winding mechanism and a casing, wherein the positive electrode sheet processing mechanism, the negative electrode sheet processing mechanism and the winding mechanism are all arranged in the casing; the positive electrode sheet output by the positive electrode sheet processing mechanism and the negative electrode sheet output by the negative electrode sheet processing mechanism enter the winding mechanism for winding; the negative electrode sheet processing mechanism comprises a negative electrode material roll, a laser etching component and a laser die-cutting component, and the negative electrode sheet on the negative electrode material roll passes through the laser etching component and the laser die-cutting component in sequence and then enters the winding mechanism.

[0006] Preferably, a group of the laser etching components is disposed on each side of the negative electrode sheet.

[0007] Preferably, a first tension adjustment mechanism is provided between the negative electrode material roll and the laser etching assembly.

[0008] Preferably, a first length measuring mechanism and a first deviation correcting mechanism are provided between the laser etching assembly and the laser die-cutting assembly.

[0009] Preferably, a first driving mechanism, a dust removal mechanism, a first CCD detection mechanism, a first cache mechanism, a gluing mechanism, a second driving mechanism, a second cache mechanism, a second deviation correction mechanism, a second tension adjustment mechanism, a second CCD detection mechanism, a third deviation correction mechanism, a second length measurement mechanism, and a cutting and feeding mechanism are sequentially arranged between the laser die-cutting assembly and the winding mechanism.

[0010] Preferably, the lithium battery winding machine with built-in laser etching function also includes an upper diaphragm unwinding mechanism and a lower diaphragm unwinding mechanism, and the upper diaphragm output by the upper diaphragm unwinding mechanism and the lower diaphragm output by the lower diaphragm unwinding mechanism both enter the winding mechanism.

[0011] In the above technical scheme, the utility model has a built-in laser etching component in the shell of the lithium battery winding machine, thereby adding a battery process electrode etching for the negative electrode, so that the lithium battery winding machine in the utility model can combine multiple battery cell manufacturing processes, reduce the number of different machines (that is, no independent laser engraving machine is required), reduce the space occupied by the battery cell production plant, facilitate integrated transportation, handling, and installation, greatly simplify the plant layout, and reduce the manpower of 2 per machine and per shift. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The structural diagram of the utility model is schematically shown.

[0013] The reference numerals in the figure are: winding mechanism 1; casing 2; negative electrode material roll 3; laser etching assembly 4; laser die-cutting assembly 5; first tension adjusting mechanism 6; first length measuring mechanism 7; first deviation correcting mechanism 8; first driving mechanism 9; dust removing mechanism 10; first CCD detecting mechanism 11; first buffer mechanism 12; gluing mechanism 13; second driving mechanism 14; second buffer mechanism 15; second deviation correcting mechanism 16; second tension adjusting mechanism 17; second CCD detecting mechanism 18; third deviation correcting mechanism 19; second length measuring mechanism 20; cutting and feeding mechanism 21; upper diaphragm unwinding mechanism 22; lower diaphragm unwinding mechanism 23; positive electrode sheet processing mechanism 24. DETAILED DESCRIPTION

[0014] The following is a detailed description of the embodiments of the present invention, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0015] As one aspect of the utility model, a lithium battery winding machine with a built-in laser etching function is provided, comprising: a positive electrode sheet processing mechanism 24, a negative electrode sheet processing mechanism, a winding mechanism 1 and a housing 2, wherein the positive electrode sheet processing mechanism, the negative electrode sheet processing mechanism and the winding mechanism 1 are all arranged in the housing 2; the positive electrode sheet output by the positive electrode sheet processing mechanism and the negative electrode sheet output by the negative electrode sheet processing mechanism enter the winding mechanism 1 for winding; the negative electrode sheet processing mechanism comprises a negative electrode material roll 3, a laser etching component 4 (for example, a laser line marking machine), and a laser die-cutting component 5, and the negative electrode sheet on the negative electrode material roll 3 passes through the laser etching component 4 and the laser die-cutting component 5 in sequence and then enters the winding mechanism 1. Among them, the positive electrode sheet processing mechanism 24 can be implemented by conventional or known corresponding mechanisms in the prior art, which will not be repeated here.

[0016] Preferably, a group of the laser etching components 4 is disposed on each side of the negative electrode sheet. The two groups of laser etching components 4 etch the A and B sides of the negative electrode sheet respectively.

[0017] Other mechanisms or structures in the negative electrode sheet processing mechanism of the present invention can be implemented in conventional or known ways in the prior art. In a preferred embodiment of the present invention, preferably, a first tension adjustment mechanism 6 is provided between the negative electrode material roll 3 and the laser etching assembly 4; preferably, a first length measuring mechanism 7 and a first deviation correction mechanism 8 are provided between the laser etching assembly 4 and the laser die-cutting assembly 5; preferably, a first driving mechanism 9, a dust removal mechanism 10, a first CCD detection mechanism 11, a first buffer mechanism 12, a gluing mechanism 13, a second driving mechanism 14, a second buffer mechanism 15, a second deviation correction mechanism 16, a second tension adjustment mechanism 17, a second CCD detection mechanism 18, a third deviation correction mechanism 19, a second length measuring mechanism 20, and a cutting and feeding mechanism 21 are provided in sequence between the laser die-cutting assembly 5 and the winding mechanism 1.

[0018] Preferably, the lithium battery winding machine with built-in laser etching function also includes an upper diaphragm unwinding mechanism 22 and a lower diaphragm unwinding mechanism 23, and the upper diaphragm output by the upper diaphragm unwinding mechanism 22 and the lower diaphragm output by the lower diaphragm unwinding mechanism 23 both enter the winding mechanism 1.

[0019] It should be noted that, in the utility model, the laser etching mechanism is preferably arranged after the negative electrode unwinding tension and before the laser die-cutting, but it is not fixed or optimal. Other positions are also equivalent to the utility model and fall within the protection scope of this application.

[0020] In the above technical scheme, the utility model has a built-in laser etching component 4 in the shell of the lithium battery winding machine, thereby adding a battery process electrode etching for the negative electrode, so that the lithium battery winding machine in the utility model can combine multiple battery cell manufacturing processes, reduce the number of different machines (that is, no independent laser engraving machine is required), reduce the space occupied by the battery cell production plant, facilitate integrated transportation, handling, and installation, greatly simplify the plant layout, and reduce 2 people per machine shift.

[0021] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lithium battery winding machine with built-in laser etching function, characterized in that: include: A positive electrode sheet processing mechanism (24), a negative electrode sheet processing mechanism, a winding mechanism (1) and a casing (2), wherein the positive electrode sheet processing mechanism, the negative electrode sheet processing mechanism and the winding mechanism (1) are all arranged in the casing (2); the positive electrode sheet output by the positive electrode sheet processing mechanism and the negative electrode sheet output by the negative electrode sheet processing mechanism enter the winding mechanism (1) for winding; the negative electrode sheet processing mechanism comprises a negative electrode material roll (3), a laser etching component (4) and a laser die-cutting component (5); the negative electrode sheet on the negative electrode material roll (3) passes through the laser etching component (4) and the laser die-cutting component (5) in sequence and then enters the winding mechanism (1).

2. The lithium battery winding machine with built-in laser etching function according to claim 1, characterized in that: A group of the laser etching components (4) is respectively arranged on both sides of the negative electrode sheet.

3. The lithium battery winding machine with built-in laser etching function according to claim 1, characterized in that: A first tension adjustment mechanism (6) is provided between the negative electrode material roll (3) and the laser etching assembly (4).

4. The lithium battery winding machine with built-in laser etching function according to claim 1, characterized in that: A first length measuring mechanism (7) and a first deviation correcting mechanism (8) are provided between the laser etching component (4) and the laser die-cutting component (5).

5. The lithium battery winding machine with built-in laser etching function according to claim 1, characterized in that: A first driving mechanism (9), a dust removal mechanism (10), a first CCD detection mechanism (11), a first buffer mechanism (12), a gluing mechanism (13), a second driving mechanism (14), a second buffer mechanism (15), a second deviation correction mechanism (16), a second tension adjustment mechanism (17), a second CCD detection mechanism (18), a third deviation correction mechanism (19), a second length measurement mechanism (20), and a cutting and feeding mechanism (21) are sequentially arranged between the laser die-cutting assembly (5) and the winding mechanism (1).

6. The lithium battery winding machine with built-in laser etching function according to claim 1, characterized in that: The lithium battery winding machine with built-in laser etching function also includes an upper diaphragm unwinding mechanism (22) and a lower diaphragm unwinding mechanism (23), and the upper diaphragm output by the upper diaphragm unwinding mechanism (22) and the lower diaphragm output by the lower diaphragm unwinding mechanism (23) both enter the winding mechanism (1).

Images