Scratch-proof structure of BC battery

Abstract

The utility model discloses a scratch-proof structure of a BC battery, which comprises N positioning glue points (03) printed on the front surface (05) of a battery piece and N hollow-out parts (01) correspondingly printed on the back surface (04) of the battery piece, N is greater than or equal to 4, and when the battery pieces are stacked, the positioning glue points (03) on the lower battery piece are inserted into the hollow-out parts (01) of the upper battery piece. According to the utility model, the positioning glue points are printed on the front surfaces of the battery pieces, and the hollows are correspondingly printed on the back surfaces of the battery pieces, so that after the battery pieces are stacked, the hollows of the upper battery pieces are sleeved on the positioning glue points of the lower battery pieces, mutual sliding between finished product pieces is avoided, the difficulty of arranging the battery pieces is reduced, and the production efficiency is improved. And meanwhile, the rate of scratched defective products caused by transportation bumping and the like is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to solar cell electrode printing technical field, concretely relates to a scratchproof structure of BC battery. BACKGROUND

[0002] With the increasingly scarce of non-renewable resources, and some non-renewable resources in people's life and industrial production caused various pollution problems, therefore all countries are using various policy or legal means to gradually increase the development and utilization of renewable energy and clean energy, and strive to improve its proportion in the whole energy use. In clean and renewable energy, solar energy is one of the most important energy, and solar cell panel is the most important equipment in solar energy utilization.

[0003] With the increasing demand for renewable energy around the world, the market demand for BC battery will continue to grow, and it is expected that by 2025, the market share of BC battery will reach 15% to 20%, showing strong growth momentum. BC battery is by moving all the electrode grid lines to the back of the battery, reducing the front light shielding, improving the battery conversion efficiency, but because the front film layer has no metal grid line protection, it is easy to cause the scratch of the battery, and then affect the appearance and product performance of the battery. At present, the mainstream of the industry adopts the scheme of adding paper between the battery pieces, and the smooth surface of the paper contacts the front of the battery to avoid scratching. This scheme has the disadvantages of increasing the flow process and high cost. SUMMARY

[0004] To solve at least one technical problem of the prior art, the utility model provides a scratchproof structure of BC battery.

[0005] To achieve the above utility model purposes, a technical scheme adopted by the utility model is as follows: a scratchproof structure of BC battery, comprising N positioning glue points printed on the front of the battery piece and N hollows printed on the back of the battery piece, wherein N is greater than or equal to 4, when the battery pieces are stacked, the positioning glue points on the lower battery piece are inserted into the hollows of the upper battery piece.

[0006] In some embodiments, at least four positioning glue points are distributed in the corners of the front of the battery piece in a rectangular shape.

[0007] In some embodiments, the positioning glue points are one of semicircular, square, diamond, hexagonal or other similar shapes.

[0008] In some embodiments, the diameter or side length of the positioning glue points is 0.05mm-0.2mm.

[0009] In some embodiments, the hollowed-out shape corresponds to the shape of the positioning dot, the hollowed-out size is greater than the size of the positioning dot, and the diameter or side length of the hollowed-out shape is 0.1 mm-0.5 mm.

[0010] In some embodiments, the positioning dot protrudes from the front surface of the battery sheet, and the protruding height of the positioning dot is greater than the thickness of the main grid printed on the back surface of the battery sheet.

[0011] In some embodiments, the protruding height of the positioning dot is 10 um-40 um.

[0012] In some embodiments, the hollowed-out shape can be provided on the main grid on the back surface of the battery sheet, and the hollowed-out shape can also be directly formed on the back surface of the battery sheet.

[0013] In some embodiments, when the hollowed-out shape is provided on the main grid, the hollowed-out shape is a groove formed on the main grid and having a size smaller than the width of the main grid.

[0014] In some embodiments, when the hollowed-out shape is directly formed on the back surface of the battery sheet, the hollowed-out shape is a protective glue block printed on the back surface of the battery sheet, which is protruded in the thickness direction of the main grid and surrounded by a positioning groove in the middle.

[0015] Compared with the prior art, the advantages of the utility model include: the utility model prints a positioning dot on the front surface of the battery sheet and prints a hollowed-out shape on the back surface of the battery sheet, so that when the battery sheets are stacked, the hollowed-out shape of the upper battery sheet is sleeved on the positioning dot of the lower battery sheet, the mutual sliding between finished sheets is avoided, the difficulty of the whole sheet is reduced, and the rate of defective products caused by scratches due to transportation bumps is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 FIG. 1 is a front surface structure schematic diagram of a BC battery sheet of the utility model;

[0017] Fig. 2 FIG. 2 is a back surface structure schematic diagram of a BC battery sheet of the utility model;

[0018] Fig. 3 FIG. 3 is a side view of a BC battery sheet of the utility model when stacked. DETAILED DESCRIPTION

[0019] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For the person skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0023] In addition, the terms "mounting", "setting", "provided with", "connecting", "connected", "sleeved" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For the person skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0024] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] With reference to Figs. 1 to 3 The utility model provides a kind of scratchproof structure of BC battery, including the N positioning glue point 03 of being set in the positive surface 05 of battery sheet and the N hollow 01 of being set in the back surface 04 of battery sheet correspondingly, wherein N is greater than or equal to 4, when battery sheet is stacked, positioning glue point 03 on the battery sheet below is inserted in the hollow 01 of the battery sheet above.

[0026] The utility model discloses a positioning glue point 03 is printed on the positive surface 05 of battery sheet, and the hollow 01 is printed on the back surface 04 of battery sheet correspondingly, so that the hollow 01 of the battery sheet above is sleeved on the positioning glue point 03 of the battery sheet below after the BC battery sheet is stacked, the mutual sliding between BC battery sheet is avoided, the difficulty of whole piece is reduced, and the scratch of bad product rate caused by transportation jolt is reduced.

[0027] In certain embodiments, at least four positioning glue points 03 are distributed in the corners of the positive surface 05 of the battery sheet in a rectangular shape, so that the BC battery sheet below can support the BC battery sheet above, and the four positioning glue points and the four hollows 01 can limit the two BC battery sheets, to prevent the two BC battery sheets from sliding.

[0028] Further, to prevent the middle part of the BC battery sheet from being depressed downward under the action of gravity, a plurality of positioning glue points 03 and a plurality of hollows 01 can be arranged at the middle part of the battery sheet.

[0029] In certain embodiments, the positioning glue point 03 is a protective glue printed on the positive surface 05 of the battery by screen printing after sintering of the BC battery, and the positioning glue point 03 can be arranged in a semicircular shape, a square shape, a diamond shape, a hexagonal shape or other similar shapes.

[0030] Further, the shape of the hollow 01 corresponds to the shape of the positioning glue point 03, the size of the hollow 01 is greater than the size of the positioning glue point 03, the diameter or side length of the hollow 01 is 0.1mm-0.5mm, and the diameter or side length of the positioning glue point 03 is 0.05mm-0.2mm.

[0031] In certain embodiments, the positioning glue point 03 protrudes from the positive surface 05 of the battery sheet, and the protruding height of the positioning glue point 03 is greater than the thickness of the main grid 02 printed on the back surface 04 of the battery sheet, so that the metal main grid 02 on the back surface of the battery sheet above does not contact the positive surface of the battery sheet below, thereby avoiding the positive surface film layer of the battery sheet from being scratched.

[0032] Preferably, the convex height of the positioning dot 03 is 10um-40um.

[0033] In some embodiments, the hollow 01 can be arranged on the main grid 02 of the back surface 04 of the battery piece, and the hollow 01 can also be directly formed on the back surface 04 of the battery piece.

[0034] In some embodiments, when the hollow 01 is arranged on the main grid 02, the hollow 01 is a groove formed on the main grid 02, and the size of the groove is smaller than the width of the main grid 02.

[0035] In some embodiments, when the hollow 01 is directly formed on the back surface 04 of the battery piece, the hollow 01 is a protection glue block printed on the back surface 04 of the battery piece, and the protection glue block is convex to the thickness direction of the main grid 02 at the four sides and is surrounded by a positioning groove in the middle.

[0036] The above description of disclosed embodiments enables those skilled in the art to carry out or use the present application. Various modifications to the above-described embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the above-described embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A scratch-resistant structure for a BC battery, characterized in that, It includes N positioning adhesive dots (03) printed on the front side (05) of the battery cell and N corresponding cutouts (01) printed on the back side (04) of the battery cell, where N≥4. When the battery cells are stacked, the positioning adhesive dots (03) on the lower battery cell are inserted into the cutouts (01) on the upper battery cell.

2. The scratch-resistant structure of the BC battery according to claim 1, characterized in that, At least four of the positioning adhesive dots (03) are rectangularly distributed at the corners of the front side (05) of the battery cell.

3. The scratch-resistant structure of the BC battery according to claim 1, characterized in that, The positioning adhesive dot (03) is a semi-circle, square, rhombus, hexagon or other similar shape.

4. The scratch-resistant structure of the BC battery according to claim 1, characterized in that, The diameter or side length of the positioning adhesive dot (03) is 0.05mm-0.2mm.

5. The scratch-resistant structure of the BC battery according to claim 1, characterized in that, The shape of the cutout (01) corresponds to the shape of the positioning adhesive point (03). The size of the cutout (01) is larger than the size of the positioning adhesive point (03). The diameter or side length of the cutout (01) is 0.1mm-0.5mm.

6. The scratch-resistant structure of the BC battery according to claim 1, characterized in that, The positioning adhesive dots (03) protrude from the front side (05) of the battery cell, and the protrusion height of the positioning adhesive dots (03) is greater than the thickness of the main grid (02) printed on the back side (04) of the battery cell.

7. The scratch-resistant structure of the BC battery according to claim 6, characterized in that, The protrusion height of the positioning adhesive dot (03) is 10um to 40um.

8. The scratch-resistant structure of the BC battery according to any one of claims 1 to 7, characterized in that, The cutout (01) can be provided on the main grid (02) on the back side (04) of the battery cell, or the cutout (01) can be directly formed on the back side (04) of the battery cell.

9. The scratch-resistant structure of the BC battery according to claim 8, characterized in that, When the cutout (01) is provided on the main grid (02), the cutout (01) is a groove formed on the main grid (02) with a size smaller than the width of the main grid (02).

10. The scratch-resistant structure of the BC battery according to claim 8, characterized in that, When the cutout (01) is directly formed on the back side (04) of the battery cell, the cutout (01) is a protective adhesive block printed on the back side (04) of the battery cell, which protrudes around the main grid (02) in the thickness direction and forms a positioning groove in the middle.

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