Battery piece structure and production system
By setting up a combined colloid and dispensing area on the battery cell, and using a combination design of self-solid glue and UV glue, the problems of unsolid welding of the main gate-free battery cell and the offset of the welding tape are solved, and the stable connection between the welding tape and the battery cell is achieved, preventing the bending of the metal wires, and improving the connection stability and anti-cracking performance of the battery cell are improved.
Patent Information
- Application Number
- CN202422060300.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-24
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-24
AI Technical Summary
The welding of the main gateless battery cells is not firm, the welding tape is easily displaced, and the heating elongation of the metal conductor cannot be released, resulting in bending, affecting the performance of the battery assembly.
The combined colloidal structure is adopted, including self-solid glue and UV glue, and the welding tape and dispensing area are set at equal intervals. The rectangular frame shape of self-solid glue and the circular design of UV glue is used to combine the matte surface and concave surface to enhance welding stability and bonding firmness.
It solves the problems of insolid welding and offset welding tape, ensures stable connection between the welding tape and the battery cell, prevents the bending of the metal wire, and improves the connection stability and anti-cracking performance of the battery cell.
Smart Images
Figure CN223297960U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic cells, and in particular to a cell sheet structure and a production system. Background Art
[0002] Currently, flux is mainly used to weld multiple solder ribbons to the main grid lines of solar cells, thereby obtaining a cell string composed of several cells connected in series, and ultimately realizing the conversion of light energy into electrical energy. However, this cell string obtained by welding the solder ribbons to the main grid lines not only has a large light-shielding area, which affects the photoelectric conversion efficiency, but also has a high silver paste cost. In order to overcome the above problems, busbar-less cells have emerged.
[0003] However, since there are no busbars on busbarless solar cells, the welding between the soldering ribbon and the solar cell is not strong enough, and the soldering ribbon and the solar cell often shift after welding, which ultimately affects the performance of the battery module. In addition, when the solar cell is heated, the metal wire is more likely to expand than the solar cell. Since the metal wire is fixed with UV glue spots at both ends of the solar cell, the heating elongation of the metal wire cannot be released, causing the metal wire to form a curved shape on the surface of the solar cell.
[0004] Therefore, it is necessary to provide a cell structure that prevents the solder strip from bending. Utility Model Content
[0005] The utility model provides a battery cell structure and a production system to solve the above technical problems.
[0006] In order to achieve the above-mentioned purpose, an embodiment of the present utility model provides a battery cell structure, including: multiple battery cells, each battery cell is provided with equally spaced solder strips through a combined colloid, multiple glue dispensing areas are provided on the battery cell, the combined colloid is arranged on the glue dispensing areas, the combined colloid includes self-curing glue and UV glue, and the UV glue corresponds one-to-one to the self-curing glue.
[0007] Furthermore, it is characterized in that the self-solidifying adhesive is in the shape of a rectangular frame.
[0008] Furthermore, it is characterized in that: the UV glue is circular.
[0009] Furthermore, it is characterized in that: the UV glue is arranged at the center position of the self-curing glue.
[0010] Furthermore, it is characterized in that: the glue dispensing area includes a frosted surface, and the outer contour of the frosted surface is consistent with the outer contour of the self-curing glue.
[0011] Furthermore, it is characterized in that: the glue dispensing area also includes a concave surface, and the outer contour of the concave surface is consistent with the outer contour of the UV glue.
[0012] The present invention also provides a production system for producing the battery cell structure as described above, including a gluing device, the gluing device including a first glue hopper and a second glue hopper, the first glue hopper is provided with the self-curing glue, and the second glue hopper is provided with UV glue.
[0013] Furthermore, glue heads are provided at the bottom of the first glue hopper and the second glue hopper.
[0014] Furthermore, the glue head includes a rectangular discharge port, and the rectangular discharge port is connected to the first glue hopper.
[0015] Furthermore, the glue head also includes a circular discharge port, and the circular discharge port is connected to the second glue hopper.
[0016] Compared with the prior art, the beneficial effects of the present invention are: by setting a combined colloid, the problem of weak welding and easy welding deviation between the main grid-less battery cell and the metal wire is solved, and at the same time, the problem of the metal wire's heating elongation not being able to be released is solved, thereby causing the metal wire to form a curved shape on the surface of the battery cell and causing hidden cracks in the battery cell is solved; by setting a glue dot area, the connection stability between the welding strip and the battery cell is enhanced. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0018] Figure 1 This is a structural diagram of a preferred embodiment of a battery cell structure of the present invention;
[0019] Figure 2 This is a structural diagram of the optimal embodiment of the dispensing area of the utility model;
[0020] Figure 3 This is a structural diagram of the optimal embodiment of the gluing device of the utility model;
[0021] Figure 4 This is a structural diagram of the optimal embodiment of the glue head of the utility model.
[0022] Among them, 1. Battery cell; 11. Glue dispensing area; 12. Frosted surface; 13. Concave surface; 2. Combined colloid; 21. Self-curing glue; 22. UV glue; 3. Solder ribbon; 4. Gluing device; 41. First glue hopper; 42. Second glue hopper; 43. Gluing head; 431. Rectangular discharge port; 432. Circular discharge port. DETAILED DESCRIPTION
[0023] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.
[0024] See also Figure 1 Combined with Figure 2 , Figure 1 This is a structural diagram of a preferred embodiment of a battery cell structure of the present invention; Figure 2 This is a schematic diagram of the structure of the optimal embodiment of the dispensing area of the utility model. Figures 1 to 2 As shown, at least one embodiment provides a battery cell structure, including: multiple battery cells 1, and equally spaced welding strips 3 are arranged on the battery cells 1 through a combined colloid 2. By setting the combined colloid 3, the problem of weak welding of the main grid-less battery cells 1 and the metal wires and easy welding offset is solved; at the same time, the problem of the metal wires being unable to be released due to heating elongation, thereby causing the metal wires to form a bent shape on the surface of the battery cell 1 and causing hidden cracks in the battery cell 1 is solved. Multiple glue dispensing areas 11 are provided on the battery cell 1, and the combined colloid 2 is provided on the glue dispensing area 11. The combined colloid 2 includes self-curing glue 21 and UV glue 22, and the UV glue 22 corresponds one-to-one to the self-curing glue 21. It should be further explained that the battery cell 1 and the metal wire are heated before the UV glue 22 is irradiated so that the elongation of the metal wire is released, and then the UV glue 22 is irradiated while being heated so that the UV glue 22 is cured. After cooling, the metal wire will shrink. Due to the curing of the UV glue 22, the metal welding strip 3 produces a certain elastic deformation. When the glue is heated, the deformation is released so that the metal wire remains in a straight line. In addition, the self-curing glue 21 in the glue gun is always in a liquid state and will solidify rapidly when exposed to air. The center position of the glue gun is the UV glue 22, which can ensure that the welding strip 3 is completely bonded to the battery cell 1 without any offset.
[0025] It should be noted that the self-curing adhesive 21 is in the shape of a rectangular frame, the UV adhesive 22 is in the shape of a circle, and the UV adhesive 22 is arranged at the center of the self-curing adhesive 21, with the metal soldering tape 3 covering the rectangular frame and the circle.
[0026] To ensure a secure bond, the glue-dispensing area 11 includes a frosted surface 12, the outer contour of which matches the outer contour of the self-curing glue 21. The glue-dispensing area 11 also includes a concave surface 13, the outer contour of which matches the outer contour of the UV glue 22. The frosted surface 12 increases friction and improves adhesive strength, while the concave surface 13 increases the amount of glue it can hold, improving the bond strength.
[0027] See also Figure 3 Combined with Figure 4 , Figure 3 This is a structural diagram of the optimal embodiment of the gluing device of the utility model; Figure 4This is a structural diagram of the optimal embodiment of the glue head of the utility model. Figures 3 and 4 As shown, the present invention also provides a production system for producing a battery cell structure as described above. The production system includes multiple production lines. The multiple production lines are the same as those in the related art and will not be described in detail here. The special feature is that the production system also includes a glue-spraying device 4. The glue-spraying device 4 is used to connect the battery cell 1 to the solder ribbon 3. The glue-spraying device 4 includes a first glue hopper 41 and a second glue hopper 42. The first glue hopper 41 is provided with a self-curing glue 21, and the second glue hopper 42 is provided with a UV glue 22. A glue-spraying head 43 is provided at the bottom of the first glue hopper 41 and the second glue hopper 42. The glue-spraying head 43 includes a rectangular discharge port 431, which is connected to the first glue hopper 41. The glue-spraying head 43 also includes a circular discharge port 432, which is connected to the second glue hopper 42. The first glue hopper 41 and the second glue hopper 42 simultaneously apply the self-curing glue 21 and the UV glue 22 to the frosted surface 12 and the lower concave surface 13 through the glue-spraying head 43.
[0028] In summary, by setting up the combined colloid 3, the problem of weak welding and easy welding deviation between the main grid-less battery cell 1 and the metal wire is solved, and at the same time, the problem of the metal wire's heating elongation not being able to be released, thereby causing the metal wire to form a bent shape on the surface of the battery cell 1 and causing hidden cracks in the battery cell 1 is solved; by setting the glue dispensing area 11, the connection stability between the welding strip 3 and the battery cell 1 is enhanced.
[0029] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.
Claims
1. A battery cell structure, characterized in that: include: A plurality of battery cells (1), wherein welding strips (3) are arranged at equal intervals on the battery cells (1) via a combined colloid (2), a plurality of glue dispensing areas (11) are provided on the battery cells (1), the combined colloid (2) is arranged on the glue dispensing areas (11), the combined colloid (2) comprises a self-solidifying glue (21) and a UV glue (22), and the UV glue (22) corresponds one-to-one to the self-solidifying glue (21).
2. The battery cell structure according to claim 1, wherein: The self-solidifying glue (21) is in the shape of a rectangular frame.
3. The battery cell structure according to claim 2, wherein: The UV glue (22) is circular.
4. The battery cell structure according to claim 3, wherein: The UV glue (22) is arranged at the center of the self-curing glue (21).
5. The battery cell structure according to claim 4, wherein: The glue dispensing area (11) comprises a frosted surface (12), and the outer contour of the frosted surface (12) matches the outer contour of the self-curing glue (21).
6. The battery cell structure according to claim 5, wherein: The glue dispensing area (11) further includes a concave surface (13), and the outer contour of the concave surface (13) matches the outer contour of the UV glue (22).
7. A production system for producing a battery cell structure according to any one of claims 1 to 6, characterized in that: The invention comprises a glue applying device (4), wherein the glue applying device (4) comprises a first glue hopper (41) and a second glue hopper (42), wherein the self-curing glue (21) is arranged in the first glue hopper (41), and wherein the UV glue (22) is arranged in the second glue hopper (42).
8. A production system according to claim 7, characterized in that: Glue heads (43) are provided at the bottom of the first glue hopper (41) and the second glue hopper (42).
9. A production system according to claim 8, characterized in that: The glue head (43) comprises a rectangular discharge port (431), and the rectangular discharge port (431) is communicated with the first glue hopper (41).
10. A production system according to claim 9, characterized in that: The glue head (43) further comprises a circular discharge port (432), and the circular discharge port (432) is communicated with the second glue hopper (42).