A lithium battery electrode strip

Abstract

This utility model discloses a lithium battery electrode strip, including a first surface and a second surface arranged opposite to each other along the thickness direction of the lithium battery electrode strip. The second surface is a blank surface. The first surface is divided into two identical dividing units by a midline along its length. The two dividing units are respectively provided with a first mark and a second mark, and the first mark and the second mark are different. The lithium battery electrode strip can easily distinguish the position information of the strip during coating, facilitating subsequent processing and traceability.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery electrode preparation technology, specifically to lithium battery electrode strips. Background Technology

[0002] In the production process of lithium battery electrode strips, after the coating process, three more processes are required: rolling, die cutting, and winding. However, since the appearance of the lithium battery electrode strips is the same at this time, it is impossible to effectively distinguish the A and B sides of the electrode strips, and it is also impossible to identify the inside and outside positions of each strip during coating. This makes it impossible to provide direction for subsequent defect analysis of defects such as lithium plating, wrinkling, or poor surface density. We need to clearly mark the appearance for traceability. Utility Model Content

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a lithium battery electrode strip that can easily distinguish the position information of the strip during coating, facilitating subsequent processing and traceability.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a lithium battery electrode strip, comprising a first surface and a second surface arranged opposite to each other along the thickness direction of the lithium battery electrode strip, the second surface being a blank surface, the first surface being divided into two partition units of the same size by a midline in the length direction, the two partition units being respectively provided with a first mark and a second mark, and the first mark and the second mark being different.

[0005] Furthermore, the first mark includes a first identification bar and a second identification bar, which are respectively arranged along the two long sides of the first dividing unit.

[0006] Furthermore, the second mark includes a third identification bar and a fourth identification bar, which are respectively arranged along the two long sides of the second dividing unit.

[0007] Furthermore, the first marking strip includes a plurality of solid circles, which are evenly spaced along the length of the electrode strip to form the first marking strip.

[0008] Furthermore, the fourth identification strip includes a plurality of hollow circles, which are evenly spaced along the length of the electrode strip to form the fourth identification strip.

[0009] Furthermore, the size of the hollow circle is the same as the outer diameter of the solid circle, and the distance between two adjacent hollow circles is equal to the distance between two adjacent solid circles.

[0010] Furthermore, the second identification strip includes a plurality of solid broken lines, which are evenly spaced along the length of the electrode strip to form the second identification strip.

[0011] Furthermore, the third identification strip includes multiple hollow broken lines, which are evenly spaced along the length of the electrode strip to form the third identification strip.

[0012] Furthermore, the size of the hollow broken wire is the same as the size of the solid broken wire, and the distance between two adjacent hollow broken wires is equal to the distance between two adjacent solid broken wires.

[0013] The beneficial effects of this utility model are:

[0014] The aforementioned lithium battery electrode strip distinguishes between its first and second surfaces (AB surfaces) by the presence or absence of markings. Different first and second markings divide the first surface into two distinct units.

[0015] Using the above markings, it is easy to distinguish the first and second surfaces of the electrode strip, i.e., the A and B sides. At the same time, after the electrode strip is separated, the markings can easily distinguish the two separating units, which facilitates subsequent traceability and processing. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 A schematic diagram of a lithium battery electrode strip on the first surface according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 The diagram shows a lithium battery electrode strip on the second surface.

[0019] Figure 3 for Figure 1 The diagram shows a partial schematic of the lithium battery electrode strip.

[0020] Figure label:

[0021] 100, First surface; 200, Second surface; 300, First marking strip; 310, Solid circle; 400, Second marking strip; 410, Solid broken line; 500, Third marking strip; 510, Hollow broken line; 600, Fourth marking strip; 610, Hollow circle. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Please see Figures 1 to 3 This utility model provides a lithium battery electrode strip, including a first surface 100 and a second surface 200 disposed opposite to each other along the thickness direction of the lithium battery electrode strip. The second surface 200 is a blank surface, and the first surface 100 is divided into two identical partition units by a midline along its length. The two partition units are respectively provided with a first mark and a second mark, and the first mark and the second mark are different.

[0024] In use, the first surface 100 and the second surface 200 (AB surfaces) of the electrode strip can be distinguished by whether or not they are marked. In addition, since the first mark and the second mark are different, the first surface 100 can be divided into two different separation units. After the electrode strip is separated, the two separation units can be easily distinguished by the markings, which facilitates subsequent traceability and processing.

[0025] Specifically, the first marker includes a first identifier bar and a second identifier bar, which are respectively positioned along the two long sides of the first dividing unit. The second marker includes a third identifier bar and a fourth identifier bar, which are respectively positioned along the two long sides of the second dividing unit.

[0026] That is, the first marking strip 300, the second marking strip 400, the third marking strip 500 and the fourth marking strip 600 are arranged side by side and spaced apart along the length direction of the electrode strip and along its width direction. The first marking strip 300 and the fourth marking strip 600 are located on both sides of the electrode strip, and the second marking strip 400 and the third marking strip 500 are arranged adjacent to each other in the middle of the electrode strip. The first surface 100 is divided into two different dividing units by the first marking strip 300, the second marking strip 400, the third marking strip 500 and the fourth marking strip 600 to form distinguishable functional areas.

[0027] Using the above markings, it is easy to distinguish the first surface 100 and the second surface 200 of the electrode strip, i.e., the AB side. At the same time, after the electrode strip is separated, the markings can be used to easily separate the units, which facilitates subsequent traceability and processing.

[0028] It should be noted that in actual implementation, when it needs to be divided into three units, six different identification strips are required; when it needs to be divided into four units, eight different identification strips are required, and so on.

[0029] In this embodiment, the first identification strip 300 includes a plurality of solid circles 310, which are evenly spaced along the length of the electrode strip to form the first identification strip 300.

[0030] In practice, it can be formed by laser printing. The diameter of the solid circle 310 can be 1mm, and the distance between two adjacent solid circles 310 can be 15mm.

[0031] In this embodiment, the fourth identification strip 600 includes a plurality of hollow circles 610, which are evenly spaced along the length of the electrode strip to form the fourth identification strip 600.

[0032] To facilitate manufacturing and ensure clear and orderly graphics on the surface of the electrode strip, the size of the hollow circle 610 can be the same as the outer diameter of the solid circle 310, and the distance between two adjacent hollow circles 610 can be equal to the distance between two adjacent solid circles 310.

[0033] In this embodiment, the second identification strip 400 includes a plurality of solid broken lines 410, which are evenly spaced along the length of the electrode strip to form the second identification strip 400.

[0034] In practice, it can be formed by laser printing. The solid broken lines 410 can be 2mm long, 1mm wide, and 30mm apart.

[0035] In this embodiment, the third identification strip 500 includes a plurality of hollow broken lines 510, which are evenly spaced along the length of the electrode strip to form the third identification strip 500.

[0036] Similarly, in order to facilitate manufacturing and ensure that the surface of the electrode strip has clear and orderly graphics, the size of the hollow broken wire 510 can be the same as that of the solid broken wire 410, and the distance between two adjacent hollow broken wires 510 can be equal to the distance between two adjacent solid broken wires 410.

[0037] Additionally, it should be noted that in other embodiments, the first marking strip 300, the second marking strip 400, the third marking strip 500, and the fourth marking strip 600 may also be other pattern marking forms, that is, any regular pattern that can clearly distinguish the first surface 100 of the lithium battery electrode strip into two different units.

[0038] In use, the first surface 100 and the second surface 200 (AB surfaces) of the electrode strip can be distinguished by setting whether or not to set an identification mark. In addition, the first surface 100 can be divided into two different dividing units by the first identification strip 300, the second identification strip 400, the third identification strip 500 and the fourth identification strip 600, so as to avoid confusion in subsequent processing.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A lithium battery electrode strip, characterized in that, It includes a first surface and a second surface arranged opposite each other along the thickness direction of the lithium battery electrode strip. The second surface is a blank surface. The first surface is divided into two partition units of the same size by a midline in the length direction. The two partition units are respectively provided with a first mark and a second mark, and the first mark and the second mark are different.

2. The lithium battery electrode strip according to claim 1, characterized in that, The first mark includes a first identification bar and a second identification bar, which are respectively arranged along the two long sides of the first dividing unit.

3. The lithium battery electrode strip according to claim 2, characterized in that, The second mark includes a third identifier bar and a fourth identifier bar, which are respectively arranged along the two long sides of the second dividing unit.

4. The lithium battery electrode strip according to claim 3, characterized in that, The first identification strip comprises a plurality of solid circles, which are evenly spaced along the length of the electrode strip to form the first identification strip.

5. A lithium battery electrode strip according to claim 4, characterized in that, The fourth identification strip comprises a plurality of hollow circles, which are evenly spaced along the length of the electrode strip to form the fourth identification strip.

6. A lithium battery electrode strip according to claim 5, characterized in that, The size of the hollow circle is the same as the outer diameter of the solid circle, and the distance between two adjacent hollow circles is equal to the distance between two adjacent solid circles.

7. A lithium battery electrode strip according to claim 3, characterized in that, The second identification strip includes multiple solid broken lines, which are evenly spaced along the length of the electrode strip to form the second identification strip.

8. A lithium battery electrode strip according to claim 7, characterized in that, The third identification strip includes multiple hollow broken lines, which are evenly spaced along the length of the electrode strip to form the third identification strip.

9. A lithium battery electrode strip according to claim 8, characterized in that, The size of the hollow broken wire is the same as the size of the solid broken wire, and the distance between two adjacent hollow broken wires is equal to the distance between two adjacent solid broken wires.

Images