Top cover patch, top cover assembly and battery monomer

Abstract

The utility model discloses a top cover paster, a top cover assembly and a battery monomer, the top cover paster comprises a paster body and release paper, the paster body is attached to the release paper, and at least one side of the release paper is provided with a lug. According to the top cover patch provided by the utility model, the convex lugs are formed on the release paper, so that an effect of assisting in stripping the release paper is achieved, a positioning effect is also achieved, the release paper and the patch body are easier to separate when equipment grabs the convex lugs, the process manufacturing performance is improved, the product yield is improved, the probability of manual reworking is reduced, and the production efficiency is improved. Therefore, the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery manufacturing, in particular to a top cover patch, a top cover assembly and a battery monomer. Background Art

[0002] It is pointed out in the relevant technology that lithium batteries are currently being used more and more widely, and the insulation performance requirements for the outer surface of the battery cover are also very strict. At present, the industry usually uses insulating patches to stick on the surface of the cover, but because the back of the insulating sheet requires a composite tape and cannot be stored and transported alone, it is necessary to attach release paper on the back adhesive side for turnover storage before production. The release paper currently used in the industry is usually slightly larger than the insulating patch, but in the actual patch assembly manufacturing process, the patch and release paper are difficult to peel off, resulting in poor process manufacturing performance, which is not conducive to improving production capacity efficiency. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a top cover patch, which is easier to separate the release paper and the patch body.

[0004] The utility model also provides a top cover assembly having the top cover patch.

[0005] The utility model also provides a battery monomer having the top cover assembly.

[0006] The top cover patch according to the first aspect of the utility model comprises: a patch body and a release paper, wherein the patch body is bonded to the release paper, and a protrusion is formed on at least one side of the release paper.

[0007] According to the top cover patch of the utility model, by forming a lug on the release paper, it plays a role of assisting in peeling off the release paper and also plays a role of positioning. The equipment grabs the lug to more easily separate the release paper and the patch body, thereby improving the process manufacturing performance, increasing the product yield, reducing the probability of manual rework, and thus improving production efficiency.

[0008] In some embodiments, the lug is formed at an end portion of at least one end of the release paper in the length direction, and an end edge of the lug is disposed beyond an end edge of the release paper.

[0009] In some embodiments, the width of the lug is smaller than the width of the patch body, and the ratio between the width of the lug and the width of the patch body is in the range of 0.3-0.8.

[0010] In some embodiments, the length dimension of the lug is in the range of 5 mm-50 mm, and / or the width dimension of the lug is in the range of 5 mm-50 mm.

[0011] In some embodiments, the release paper is arranged centrally relative to the patch body.

[0012] In some embodiments, the length of the release paper is greater than the length of the patch body, and / or the width of the release paper is greater than the width of the patch body.

[0013] In some embodiments, the distance between the edge of the release paper and the edge of the patch body is in the range of 0.5 mm to 3 mm.

[0014] In some embodiments, the lug is integrally formed with the release paper.

[0015] The top cover assembly according to the second aspect of the utility model comprises: a cover plate, an explosion-proof valve and a top cover patch according to the first aspect of the utility model, a mounting hole is formed on the cover plate, the explosion-proof valve is sealed in the mounting hole, and the top cover patch is arranged on the cover plate.

[0016] According to the top cover assembly of the utility model, by providing the top cover patch of the first aspect, the product yield of the top cover assembly is improved, the production cost of the battery monomer is reduced, and the production efficiency of the battery monomer is improved.

[0017] A battery cell according to a third aspect of the utility model comprises a top cover assembly according to the second aspect of the utility model.

[0018] According to the battery cell of the utility model, by providing the top cover assembly of the second aspect, the overall performance of the battery cell is improved, the production cost of the battery cell is reduced, and the production efficiency of the battery cell is improved.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a top cover patch according to an embodiment of the utility model;

[0021] Figure 2 yes Figure 1 A schematic diagram of the patch body shown in ;

[0022] Figure 3 yes Figure 1 Schematic diagram of another perspective of the top cover patch shown in;

[0023] Figure 4 It is a schematic diagram of a top cover patch according to another embodiment of the utility model.

[0024] Reference numerals:

[0025] 100. Top cover patch; 1. Patch body; 2. Release paper; 21. Lug; 3. Pole hole; 4. Explosion-proof valve hole; 5. QR code hole; 6. Positive electrode mark; 7. Negative electrode mark. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] First, refer to Figure 1-Figure 4 A top cover assembly according to an embodiment of the second aspect of the utility model is briefly described. The top cover assembly includes a top cover patch 100 according to an embodiment of the first aspect of the utility model.

[0028] According to the embodiment of the utility model, the top cover assembly includes: a cover plate, an explosion-proof valve and a top cover patch 100 according to the first embodiment of the utility model, a mounting hole is formed on the cover plate, the explosion-proof valve is sealed in the mounting hole, and the top cover patch 100 is arranged on the cover plate.

[0029] According to the top cover assembly of the embodiment of the utility model, by providing the top cover patch 100 of the first embodiment, the product yield of the top cover assembly is improved, the production cost of the battery cell is reduced, and the production efficiency of the battery cell is improved.

[0030] Reference below Figure 1-Figure 4 The top cover patch 100 according to the first embodiment of the utility model is described.

[0031] like Figure 1 As shown, the top cover patch 100 according to the first embodiment of the utility model comprises: a patch body 1 and a release paper 2, the patch body 1 is attached to the release paper 2, and a lug 21 is formed on at least one side of the release paper 2. Therefore, the structure of the top cover patch 100 is simple, and the idea of ​​designing the lug 21 on the release paper 2 is ingenious.

[0032] According to the top cover patch 100 of the embodiment of the utility model, by forming a lug 21 on the release paper 2, it plays a role of assisting in peeling off the release paper 2 and also plays a role of positioning. The equipment grabs the lug 21 to more easily separate the release paper 2 and the patch body 1, thereby improving the process manufacturing performance, increasing the product yield, reducing the probability of manual rework, and thus improving production efficiency.

[0033] In some embodiments of the present invention, the lug 21 is formed at the end of at least one end of the release paper 2 in the length direction, and the end edge of the lug 21 is arranged beyond the end edge of the release paper 2. Thus, the separation effect is not affected, and the difficulty of production is not increased. Figure 1 As shown, the lug 21 is formed at the right end of the release paper 2. Figure 4 As shown, the lug 21 is formed at the left end of the release paper 2 .

[0034] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the width a of the lug 21 is smaller than the width W2 of the patch body 1, and the ratio between the width a of the lug 21 and the width W2 of the patch body 1 is in the range of 0.3-0.8. For example, the ratio between the width a of the lug 21 and the width W2 of the patch body 1 can be 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, etc. It can be understood that if the ratio between the width a of the lug 21 and the width W2 of the patch body 1 is too small, that is, the width of the lug 21 is too small, the device is not easy to grasp, and the release paper 2 is easy to tear when peeling. If the ratio between the width a of the lug 21 and the width W2 of the patch body 1 is too large, that is, the width of the lug 21 is too large, the amount of release paper 2 is large, resulting in waste and increasing the production cost.

[0035] Further, the length b of the lug 21 is in the range of 5 mm to 50 mm, and / or the width a of the lug 21 is in the range of 5 mm to 50 mm. For example, the length b of the lug 21 can be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc.; the width a of the lug 21 can be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc.

[0036] Optionally, the lug 21 may be formed in a square, a circle, an ellipse, a trapezoid, a triangle, etc., and the shape of the lug 21 is not limited thereto.

[0037] In some embodiments of the present invention, Figure 1 and Figure 4 As shown, the release paper 2 is arranged centrally relative to the patch body 1. Thus, the patch body 1 is ensured to be completely located in the release paper 2, and the patch body 1 is prevented from exceeding the edge of the release paper 2, thereby improving the product quality of the top cover patch 100.

[0038] In some embodiments of the present invention, Figure 1 and Figure 4As shown, the length L1 of the release paper 2 is greater than the length L2 of the patch body 1, and / or the width W1 of the release paper 2 is greater than the width W2 of the patch body 1. Thus, it is further ensured that the patch body 1 is completely located in the release paper 2, and the patch body 1 is completely covered, which prevents the patch body 1 from exceeding the edge of the release paper 2, thereby improving the product quality of the top cover patch 100.

[0039] Further, the distance between the edge of the release paper 2 and the edge of the patch body 1 is in the range of 0.5mm-3mm. For example, the distance between the edge of the release paper 2 and the edge of the patch body 1 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3.0mm, etc.

[0040] In order to ensure the connection stability and structural strength between the lug 21 and the release paper 2 , the lug 21 and the release paper 2 are integrally formed.

[0041] As shown in the figure, a pole hole 3, an explosion-proof valve hole 4, a QR code hole 5, a positive electrode mark 6 and a negative electrode mark 7 are also formed on the top cover patch 100.

[0042] According to the second aspect of the present invention, the top cover assembly comprises: a cover plate, an explosion-proof valve and a top cover patch 100 according to the first aspect of the present invention, wherein a mounting hole is formed on the cover plate, the explosion-proof valve is sealed in the mounting hole, and the top cover patch 100 is arranged on the cover plate.

[0043] According to the top cover assembly of the embodiment of the utility model, by providing the top cover patch 100 of the first embodiment, the product yield of the top cover assembly is improved, the production cost of the battery cell is reduced, and the production efficiency of the battery cell is improved.

[0044] A battery cell according to an embodiment of the third aspect of the utility model includes a top cover assembly according to an embodiment of the second aspect of the utility model.

[0045] According to the battery cell of the embodiment of the utility model, by providing the top cover assembly of the above-mentioned second embodiment, the overall performance of the battery cell is improved, the production cost of the battery cell is reduced, and the production efficiency of the battery cell is improved.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0048] 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, an electrical connection, or a communication; 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.

[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0050] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A top cover patch, characterized in that: include: The patch body and the release paper are bonded to each other, a lug is formed on at least one side of the release paper, and a pole hole, an explosion-proof valve hole, a QR code hole, a positive electrode mark and a negative electrode mark are formed on the top cover patch.

2. The top cover patch according to claim 1, characterized in that: The lug is formed at an end portion of at least one end of the release paper in the length direction, and an end edge of the lug is arranged beyond an end edge of the release paper.

3. The top cover patch according to claim 2, characterized in that: The width of the lug is smaller than the width of the patch body, and the ratio between the width of the lug and the width of the patch body is in the range of 0.3-0.

8.

4. The top cover patch according to claim 3, characterized in that: The length dimension of the lug is in the range of 5 mm to 50 mm, and / or the width dimension of the lug is in the range of 5 mm to 50 mm.

5. The top cover patch according to claim 1, characterized in that: The release paper is arranged centrally relative to the patch body.

6. The top cover patch according to claim 5, characterized in that: The length of the release paper is greater than the length of the patch body, and / or the width of the release paper is greater than the width of the patch body.

7. The top cover patch according to claim 6, characterized in that: The distance between the edge of the release paper and the edge of the patch body is in the range of 0.5 mm to 3 mm.

8. The top cover patch according to any one of claims 1 to 7, characterized in that: The lug is integrally formed with the release paper.

9. A top cover assembly, characterized in that: include: A cover plate, wherein a mounting hole is formed on the cover plate; An explosion-proof valve, the explosion-proof valve being sealed in the mounting hole; The top cover patch according to any one of claims 1 to 8, wherein the top cover patch is arranged on the cover plate.

10. A battery cell, characterized in that: Includes the top cover assembly as described in claim 9.

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