A battery piece edge wrapping device

Abstract

The utility model discloses a battery piece edge covering device relates to photovoltaic battery piece production equipment field. The battery piece edge covering device includes a plurality of glue mould, a plurality of glue mould are used to by the opposite sides of battery piece together hold battery piece to form the glue injection cavity that surrounds the periphery of battery piece, at least one glue mould has the glue injection part of communication with glue injection cavity, and the glue injection part is configured to inject the edge covering glue into glue injection cavity. The battery piece edge covering device provided by the utility model can improve the edge covering efficiency and edge covering accuracy.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell production equipment, and more specifically, to a cell edge-wrapping device. Background Technology

[0002] In the production process of photovoltaic cells, before electroplating, the edges of the cells need to be wrapped to prevent short circuits on both sides of the cells.

[0003] Currently, the main method used in the market is to apply adhesive to the edges of the battery cells using an edge-sealing wheel. This method is inefficient and easily produces wavy adhesive lines on both sides of the battery cell, making it difficult to achieve the ideal edge-sealing width. Utility Model Content

[0004] The purpose of this invention is to provide a battery cell edge-wrapping device that can improve edge-wrapping efficiency and accuracy.

[0005] The embodiments of this utility model provide a technical solution: A battery cell edge-wrapping device includes multiple adhesive molds, which are used to clamp the battery cell by opposite sides to form an injection cavity around the periphery of the battery cell. At least one of the glue molds has a glue injection section communicating with the glue injection cavity, the glue injection section being configured to inject edge-binding glue into the glue injection cavity.

[0006] In an optional embodiment, the plurality of adhesive molds include an upper adhesive mold and a lower adhesive mold, which are used to respectively adhere to the two side surfaces of the battery cell to jointly clamp the battery cell and form the adhesive injection cavity.

[0007] In an optional embodiment, both the upper and lower molding molds have a first elastic sealing portion, and both the upper and lower molding molds are attached to the surface of the battery cell through the first elastic sealing portion.

[0008] In an optional embodiment, both the upper mold and the lower mold have a second elastic sealing portion, and the upper mold and the lower mold are fitted together through their respective second elastic sealing portions.

[0009] In an optional embodiment, both the upper and lower molds have glue grooves. When the upper and lower molds jointly hold the battery cell, the glue grooves of the upper mold and the lower mold cover each other to form the glue injection cavity.

[0010] In an optional embodiment, the number of the gluing molds is two, and both of the gluing molds have C-shaped glue grooves; With the two adhesive molds attached to the upper surface of the battery cell, the two ends of the adhesive grooves of the two adhesive molds are respectively joined together to form an annular adhesive groove.

[0011] In an optional embodiment, the number of the lower glue molds is two, and both lower glue molds have C-shaped glue grooves; With the two lower adhesive molds attached to the lower surface of the battery cell, the two ends of the adhesive grooves of the two lower adhesive molds are respectively joined together to form an annular adhesive groove.

[0012] In an optional embodiment, the number of the gluing molds is one, and the glue groove of the gluing mold is annular; and / or, The number of the lower glue molds is one, and the glue groove of the lower glue mold is annular.

[0013] In an optional embodiment, both the upper and lower glue molds have the glue injection section, and the glue grooves of the upper and lower glue molds are connected to the outside through the corresponding glue injection section.

[0014] In an optional embodiment, the number of adhesive molds is four, of which two adhesive molds are used to adhere to the upper surface of the battery cell, and the remaining two adhesive molds are used to adhere to the lower surface of the battery cell. Any one of the molding compounds and another molding compound are symmetrically arranged on both sides of the battery cell, and any one of the molding compounds and another molding compound are symmetrically arranged on the same side of the battery cell.

[0015] Compared to existing technologies, the battery cell edge-wrapping device provided by this utility model, in practical applications, uses multiple molds to clamp both sides of the battery cell, forming an injection cavity around the perimeter of the battery cell. Edge-wrapping adhesive is then injected into the injection cavity through the injection part of at least one mold, thus completing the edge-wrapping process. The mold clamping allows for precise control of the edge-wrapping width, and the adhesive injection method enables the wrapping of all edges of the battery cell in one operation. Furthermore, the molds and battery cell remain relatively stationary during the adhesive injection process, resulting in a straight adhesive line and further improving accuracy. Therefore, the beneficial effects of the battery cell edge-wrapping device provided by this utility model include improved edge-wrapping efficiency and accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and therefore should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1An exploded view of the battery cell edge-wrapping device provided in the embodiments of this utility model in practical application; Figure 2 A cross-sectional view of the battery cell edge-wrapping device provided in an embodiment of this utility model in practical application; Figure 3 This is a cross-sectional view of the glue mold; Figure 4 This is a cross-sectional view of the lower molding die.

[0018] Icons: 100-Battery cell edge wrapping device; 110-Glue injection cavity; 120-Glue injection part; 130-Upper glue mold; 140-Lower glue mold; 150-First elastic sealing part; 160-Second elastic sealing part; 170-Glue groove; 200-Battery cell. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0026] Example Please refer to the following: Figure 1 and Figure 2 , Figure 1 The diagram shown is an exploded view of the battery cell edge-wrapping device 100 provided in this embodiment in practical application. Figure 2 The image shown is a cross-sectional view of the battery cell edge-wrapping device 100 in practical application.

[0027] The battery cell edge-wrapping device 100 provided in this embodiment includes multiple molds for clamping the battery cell 200 by its opposite sides to form an injection cavity 110 surrounding the periphery of the battery cell 200. At least one mold has an injection portion 120 communicating with the injection cavity 110, and the injection portion 120 is configured to inject edge-wrapping adhesive into the injection cavity 110.

[0028] It is understandable that the opposite sides of the solar cell 200 are actually the two sides where the P-side and N-side of the solar cell 200 are located, that is... Figure 2 The upper and lower sides of the middle battery cell 200.

[0029] In practical applications, multiple molds of the cell edge-wrapping device 100 clamp the opposite sides of the cell 200 together, forming an injection cavity 110 surrounding the periphery of the cell 200. Then, edge-wrapping adhesive is injected into the injection cavity 110 through the injection part 120 on at least one mold, causing the adhesive to wrap around the periphery of the cell 200, thus achieving edge-wrapping treatment of the cell 200.

[0030] By setting the size and shape of the molding die, precise control can be achieved over the dimension of the edge of the solar cell 200 extending into the injection cavity 110, thus ensuring accurate edge width on both sides of the solar cell 200. Furthermore, by injecting edge-sealing adhesive into the injection cavity 110, the edge of the solar cell 200 can be sealed in one go, achieving extremely high efficiency. Moreover, the molding die and the solar cell 200 remain relatively stationary during the injection process, ensuring a straight adhesive line and further improving edge-sealing accuracy.

[0031] In fact, compared to the ±100μm edge-sealing accuracy of traditional edge-sealing wheels, the edge-sealing accuracy of the battery cell edge-sealing device 100 provided in this embodiment can reach ±50μm. Furthermore, compared to edge-sealing wheels, the molding compound in this embodiment is easier to clean and maintain.

[0032] Multiple molds include an upper mold 130 and a lower mold 140. The upper mold 130 and the lower mold 140 are used to attach to the two sides of the battery cell 200, respectively. That is, the upper mold 130 attaches to the upper surface of the battery cell 200, and the lower mold 140 attaches to the lower surface of the battery cell 200. Together, they hold the battery cell 200 to form the injection cavity 110.

[0033] In order to ensure the sealing of the injection cavity 110, in this embodiment, both the upper mold 130 and the lower mold 140 have a first elastic sealing part 150, and both the upper mold 130 and the lower mold 140 are attached to the surface of the battery cell 200 through the first elastic sealing part 150.

[0034] Furthermore, both the upper mold 130 and the lower mold 140 have a second elastic sealing part 160, and the upper mold 130 and the lower mold 140 are bonded to each other through their respective second elastic sealing parts 160.

[0035] It is understandable that both the first elastic sealing part 150 and the second elastic sealing part 160 have elastic deformation capabilities. When the first elastic sealing part 150 is attached to the surface of the battery cell 200, the first elastic sealing part 150 is deformed under pressure, thereby ensuring a tight fit with the surface of the battery cell 200 and achieving an ideal sealing effect. Furthermore, the first elastic sealing part 150 of the upper adhesive mold 130 and the lower adhesive mold 140 participates in forming the injection cavity 110, which can prevent the edge-wrapping adhesive from spreading to the central area of ​​the battery cell 200, facilitating the control of edge-wrapping precision.

[0036] When the upper mold 130 and the lower mold 140 clamp the battery cell 200, the second elastic sealing part 160 of the upper mold 130 and the second elastic sealing part 160 of the lower mold 140 are attached to the circumference of the battery cell 200 and deformed under pressure, thereby further improving the sealing performance of the injection cavity 110.

[0037] Preferably, in this embodiment, both the first elastic sealing part 150 and the second elastic sealing part 160 are made of polyurethane. The main body of the upper mold 130 and the lower mold 140 is made of steel. The first elastic sealing part 150 and the second elastic sealing part 160 are connected to the main body. The main body surfaces of the upper mold 130 and the lower mold 140 are polished to ensure good flow of the edge-sealing adhesive in the injection cavity 110.

[0038] In this embodiment, both the upper mold 130 and the lower mold 140 have glue grooves 170. When the upper mold 130 and the lower mold 140 jointly hold the battery cell 200, the glue grooves 170 of the upper mold 130 and the glue grooves 170 of the lower mold 140 are covered to form the glue injection cavity 110.

[0039] Please refer to the above. Figure 3 and Figure 4 , Figure 3 The image shown is a cross-sectional view of the top molding 130. Figure 4 The image shown is a cross-sectional view of the lower mold 140.

[0040] In this embodiment, there are actually two adhesive application molds 130, and both adhesive application molds 130 have C-shaped adhesive grooves 170. When the two adhesive application molds 130 are attached to the upper surface of the battery cell 200, the two ends of the adhesive grooves 170 of the two adhesive application molds 130 are respectively connected to form annular adhesive grooves 170.

[0041] Similarly, there are two lower molding dies 140, each with a C-shaped adhesive groove 170. With the two lower molding dies 140 attached to the lower surface of the battery cell 200, the two ends of the adhesive grooves 170 of the two lower molding dies 140 are joined together to form an annular adhesive groove 170. In this embodiment, the first elastic sealing portion 150 is also C-shaped, defining the inner wall of the C-shaped adhesive groove 170.

[0042] With the two upper adhesive molds 130 attached to the upper surface of the battery cell 200, the first elastic sealing portions 150 of the two upper adhesive molds 130 are tightly fitted to the upper surface of the battery cell 200 to form a seal, and their ends are also tightly fitted to form a seal. Similarly, with the two lower adhesive molds 140 attached to the lower surface of the battery cell 200, the first elastic sealing portions 150 of the two lower adhesive molds 140 are tightly fitted to the lower surface of the battery cell 200 to form a seal, and their ends are also tightly fitted to form a seal.

[0043] In fact, in this embodiment, the upper mold 130 and the lower mold 140 have the same structure and size; in other words, all four molds have the same structure and size.

[0044] In order to further improve the edge-wrapping efficiency and the uniformity of the adhesive layer on the surface of the battery cell 200, in this embodiment, both upper adhesive molds 130 and two lower adhesive molds 140 have an injection part 120. In practical applications, the two upper adhesive molds 130 and the two lower adhesive molds 140 together inject edge-wrapping adhesive into the injection cavity 110 through a total of four injection parts 120.

[0045] In this embodiment, any one of the four molding dies is symmetrically arranged on both sides of the battery cell 200 with another molding die, and any one molding die is symmetrically arranged on the same side of the battery cell 200 with another molding die.

[0046] In other words, two upper adhesive molds 130 are symmetrically arranged on the upper surface of the battery cell 200, and two lower adhesive molds 140 are symmetrically arranged on the lower surface of the battery cell 200. The two upper adhesive molds 130 and the two lower adhesive molds 140 are symmetrically arranged on both sides of the battery cell 200, corresponding one to one.

[0047] In another embodiment, if the edge widths of different sides or different edges on the same side of the battery cell 200 are different, the size and shape of each molding die can be set differently. In this case, the two molding dies on the same side of the battery cell 200 can be asymmetrical, and the molding dies on both sides of the battery cell 200 can also be asymmetrical.

[0048] Furthermore, in another embodiment, the number of upper mold 130 and lower mold 140 can be adjusted according to actual application conditions. For example, the number of upper mold 130 can be only one, in which case the glue groove 170 of the upper mold 130 is annular. The number of lower mold 140 can also be only one, and similarly, the glue groove 170 of the lower mold 140 is annular.

[0049] In summary, the battery cell edge-wrapping device 100 provided in this embodiment has the characteristics of higher edge-wrapping efficiency, higher edge-wrapping accuracy, and easier cleaning.

[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery cell edge-wrapping device, characterized in that, It includes multiple molds, which are used to clamp the battery cell (200) together by opposite sides of the battery cell (200) to form a glue injection cavity (110) around the periphery of the battery cell (200). At least one of the glue molds has a glue injection section (120) communicating with the glue injection cavity (110), the glue injection section (120) being configured to inject edge-binding glue into the glue injection cavity (110).

2. The battery cell edge-wrapping device according to claim 1, characterized in that, The plurality of the adhesive molds include an upper adhesive mold (130) and a lower adhesive mold (140), the upper adhesive mold (130) and the lower adhesive mold (140) being used to respectively adhere to the two sides of the battery cell (200) to jointly clamp the battery cell (200) and form the adhesive injection cavity (110).

3. The battery cell edge-wrapping device according to claim 2, characterized in that, Both the upper mold (130) and the lower mold (140) have a first elastic sealing part (150), and both the upper mold (130) and the lower mold (140) are attached to the surface of the battery cell (200) through the first elastic sealing part (150).

4. The battery cell edge-wrapping device according to claim 2, characterized in that, Both the upper mold (130) and the lower mold (140) have a second elastic sealing part (160), and the upper mold (130) and the lower mold (140) are bonded to each other through their respective second elastic sealing parts (160).

5. The battery cell edge-wrapping device according to claim 2, characterized in that, Both the upper mold (130) and the lower mold (140) have glue grooves (170). When the upper mold (130) and the lower mold (140) jointly hold the battery cell (200), the glue groove (170) of the upper mold (130) and the glue groove (170) of the lower mold (140) are covered to form the glue injection cavity (110).

6. The battery cell edge-wrapping device according to claim 5, characterized in that, The number of the glue-applying molds (130) is two, and both of the glue-applying molds (130) have C-shaped glue grooves (170). With the two adhesive molds (130) attached to the upper surface of the battery cell (200), the two ends of the adhesive grooves (170) of the two adhesive molds (130) are respectively connected to form an annular adhesive groove (170).

7. The battery cell edge-wrapping device according to claim 5, characterized in that, The number of the lower glue molds (140) is two, and both of the lower glue molds (140) have C-shaped glue grooves (170). With the two lower molding molds (140) attached to the lower surface of the battery cell (200), the two ends of the glue grooves (170) of the two lower molding molds (140) are respectively connected to form an annular glue groove (170).

8. The battery cell edge-wrapping device according to claim 5, characterized in that, The number of the gluing mold (130) is one, and the glue groove (170) of the gluing mold (130) is annular; and / or, The number of the lower glue mold (140) is one, and the glue groove (170) of the lower glue mold (140) is annular.

9. The battery cell edge-wrapping device according to claim 5, characterized in that, Both the upper glue mold (130) and the lower glue mold (140) have glue injection parts (120), and the glue grooves (170) of the upper glue mold (130) and the lower glue mold (140) are connected to the outside through the corresponding glue injection parts (120).

10. The battery cell edge-wrapping device according to claim 1, characterized in that, The number of adhesive molds is four, of which two adhesive molds are used to adhere to the upper surface of the battery cell (200), and the remaining two adhesive molds are used to adhere to the lower surface of the battery cell (200). Any one of the molding compounds and another molding compound are symmetrically arranged on both sides of the battery cell (200), and any one of the molding compounds and another molding compound are symmetrically arranged on the same side of the battery cell (200).

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