Jig structure for manually connecting battery pieces in series

Abstract

The utility model discloses a jig structure for manually connecting battery pieces in series, which comprises a first positioning piece and a fourth positioning piece, the upper surface of the first positioning piece is provided with a first limiting groove for placing a first battery piece, and the upper surface of the fourth positioning piece is provided with a fourth limiting groove for placing a second battery piece. The second battery piece can stretch out of the fourth limiting groove and stretch out towards the direction of the first positioning piece, and the battery area, not contained in the fourth limiting groove and stretching out towards the direction of the first positioning piece, of the second battery piece is a second exposed part. Through the arrangement of the first limiting groove and the second limiting groove, the positions of the battery pieces are limited, the battery pieces can be accurately guided and fixed, it is ensured that the welding position is accurate, the overall quality of the battery string is improved, and the service life of the battery string is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cell assembly, in particular to a fixture structure for manually connecting battery cells in series. Background Art

[0002] As an important representative of renewable energy, solar photovoltaic technology has been widely used and developed in recent years. In the manufacturing process of photovoltaic cells, string welding is a key step, which connects the cells into battery packs to form solar photovoltaic modules. However, with the development of automation technology, the current mainstream solar cell string welding has tended to use fully automated string welding machines for mass production, and the use of manual stringing jigs has gradually decreased, but it is still used in small batch production or scientific research experiments.

[0003] In the existing technology, the main purpose of the jig structure for manually connecting solar cells in series is to assist operators in accurately and effectively connecting solar cells or other battery units that need to be connected in series, and to ensure the stability and consistency of the series connection between the cells. In the process of stringing solar cells, a jig similar to a template may be used, on which a plurality of grooves are arranged, each groove is used to fix a cell, and there are guide grooves on both sides of the groove to ensure that the welding strip is accurately laid along the main grid line of the cell, and adjacent cells are welded in series by manual or semi-automatic welding tools. However, due to the subjectivity and uncertainty of manual operation, the traditional method is difficult to achieve the same precision as a machine when using a jig to connect cells in series, which may cause large fluctuations in the performance of the cell string. Utility Model Content

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide a solar photovoltaic manual string welding alignment fixture for improving the accuracy of the string welding process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a jig structure for manually connecting battery cells in series, including a first positioning member and a fourth positioning member, the upper surface of the first positioning member is provided with a first limiting groove for placing the first battery cell, the upper surface of the fourth positioning member is provided with a fourth limiting groove for placing the second battery cell, the second battery cell can extend out of the fourth limiting groove and extend in the direction of the first positioning member, and the battery area of ​​the second battery cell that is not accommodated in the fourth limiting groove and extends in the direction of the first positioning member is the second exposed portion. Through the setting of the first limiting groove and the second limiting groove, the position of the battery cell is limited, and the battery cell can be accurately guided and fixed to ensure the accuracy of the welding position, thereby improving the overall quality and service life of the battery string. Before assembling the second battery cell, the upper surface of the first battery cell has been attached to the welding strip. Through the setting of the second exposed portion, the lower surface of the second exposed portion of the second battery cell can be connected to one side of the welding strip during the process of assembling the second battery cell from top to bottom with the fourth positioning member and the first battery cell, reducing the burden of manual operation, improving the work efficiency in the process of connecting the battery cells in series, and reducing invalid labor time and labor costs.

[0006] Furthermore, the first positioning member is provided with a first side groove on the side close to the fourth positioning member, and the fourth positioning member is provided with a positioning protrusion on the side close to the first positioning member, and at least a part of the positioning protrusion is accommodated in the first side groove. By providing the first side groove and the positioning protrusion, the relative position of the first positioning member and the fourth positioning member is limited, the position accuracy of the first positioning member and the fourth positioning member is improved, and then the position accuracy of the battery cell is improved.

[0007] Furthermore, the first battery cell can extend out of the first limiting groove and extend in the direction of the fourth positioning member, and the battery area of ​​the first battery cell that is not accommodated in the first limiting groove and extends in the direction of the fourth positioning member is the first exposed portion. The first exposed portion is provided to connect the welding strip and accurately control the position of the welding strip.

[0008] Furthermore, a second positioning member is included, and an avoidance groove is provided on the side wall of the first limiting groove, the avoidance groove is connected to the first limiting groove, and the two ends of the second positioning member are accommodated in the avoidance groove. Through the setting of the second positioning member, the battery cell is pressed together to ensure that the battery cell and the bottom of the first limiting groove are in contact, and the position of the battery cell is further limited.

[0009] Furthermore, the side of the second positioning member close to the fourth positioning member is flush with the side of the first positioning member close to the fourth positioning member, ensuring that the second positioning member does not cover the first exposed portion, which is beneficial to the subsequent welding strip connection.

[0010] Furthermore, a third positioning member is included, and the third positioning member is located below the first exposed portion and abuts against the back of the first exposed portion. The third positioning member can support the battery cell to prevent damage to the battery cell during the subsequent process of pressing the battery cell, thereby effectively reducing the operating error rate, thereby reducing waste and saving costs.

[0011] Furthermore, the third positioning member is a strip structure with a "convex" cross-section, and the third positioning member includes a limiting portion located at the lower end and a supporting portion located at the upper end, at least a portion of the limiting portion is accommodated in a bottom first groove body provided on the lower surface of the first positioning member, at least a portion of the limiting portion is accommodated in a bottom second groove body provided on the lower surface of the fourth positioning member, and the supporting portion abuts against the back side of the first exposed portion.

[0012] Furthermore, a fifth positioning member is included, and the fifth positioning member can connect the first positioning member and the fourth positioning member. The fifth positioning member is provided to connect the first positioning member and the fourth positioning member to install multiple battery cells.

[0013] Furthermore, a positioning protrusion is provided on one side of the fifth positioning member close to the first positioning member, and the positioning protrusion is matched with the first side groove; a bottom second groove is provided on the back of the fifth positioning member for accommodating the limiting portion of the third positioning member. The positioning protrusion and the bottom second groove ensure that the fifth positioning member can be connected to the first positioning member.

[0014] Furthermore, a first side groove is provided on a side of the fifth positioning member away from the first positioning member, and the first side groove can cooperate with the positioning protrusion.

[0015] The beneficial effects of the utility model are:

[0016] 1) The first limiting groove and the second limiting groove are provided to limit the position of the battery cell, so as to accurately guide and fix the battery cell, ensure the accuracy of the welding position, and thus improve the overall quality and service life of the battery string. Before assembling the second battery cell, the upper surface of the first battery cell has been attached to the welding strip. Through the provision of the second exposed portion, the lower surface of the second exposed portion of the second battery cell can be connected to one side of the welding strip during the process of assembling the second battery cell from top to bottom with the fourth positioning member and the first battery cell, thereby reducing the burden of manual operation, improving the work efficiency during the battery cell series connection process, and reducing ineffective labor time and labor costs.

[0017] 2) By providing the first side groove and the positioning protrusion, the relative positions of the first positioning member and the fourth positioning member are limited, thereby improving the position accuracy of the first positioning member and the fourth positioning member, thereby improving the position accuracy of the battery cell.

[0018] 3) Workers only need to put the battery cells into the positioning grooves, and then adjust the positioning parts to make the battery cells reach the best alignment state, thereby achieving high-precision string welding. Not only does it improve the alignment accuracy, it also reduces the operating burden of workers and improves production efficiency. It effectively solves the problems existing in the manual string welding alignment method and has high practicality and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A three-dimensional diagram of a fixture for connecting battery cells in series according to an embodiment of the utility model;

[0022] Figure 2 A cross-sectional view of a fixture for connecting battery cells in series according to an embodiment of the utility model;

[0023] Figure 3 This is an exploded view of a first positioning member and a fourth positioning member connected in series with a battery cell according to an embodiment of the utility model;

[0024] Figure 4 This is an exploded view of the first positioning member and the fifth positioning member connected in series with the battery cells according to one embodiment of the utility model;

[0025] Figure 5 A three-dimensional diagram of a first positioning member according to an embodiment of the present utility model;

[0026] Figure 6 A three-dimensional diagram of a fourth positioning member according to an embodiment of the present utility model;

[0027] Figure 7 A three-dimensional diagram of a fifth positioning member according to an embodiment of the present utility model;

[0028] Figure 8 This is a three-dimensional diagram of the fifth positioning member from another perspective of an embodiment of the present invention.

[0029] In the figure: 1. first positioning member; 11. first positioning portion; 12. second positioning portion; 13. avoidance groove; 14. first bottom groove body; 15. first side groove body; 2. second positioning member; 3. third positioning member; 31. limiting portion; 32. supporting portion; 4. fourth positioning member; 41. positioning protrusion; 42. second bottom groove body; 5. fifth positioning member; 6. welding strip; 7. battery cell; 71. first battery cell; 711. first exposed portion; 72. second battery cell; 721. second exposed portion; 73. third battery cell. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0031] See attached Figure 1-4 As shown, a jig structure for manually connecting battery cells in series in this embodiment includes multiple positioning members for positioning and assembling battery cells 7 and welding strips 6. Through the setting of multiple positioning members, workers only need to put the battery cells into the positioning grooves, and then adjust the positioning members to make the battery cells reach the best alignment state, thereby achieving high-precision string welding. The loading, positioning and welding processes of battery cells are simplified, allowing operators to connect battery cells in series more quickly and accurately, thereby significantly improving overall production efficiency.

[0032] See attached Figure 1-5 As shown, the positioning member includes a first positioning member 1, which is used to position the first battery cell 71 during the installation process. The first positioning member 1 is a plate-like structure, and a first positioning portion 11 is provided near the long edge position, which is used to limit the length edge of the battery cell 7. A second positioning portion 12 is provided near the wide edge position, and two second positioning portions 12 are provided, which are respectively provided near the edges in the width direction to limit the edge of the battery cell 7. Through the provision of the first positioning portion 11 and the second positioning portion 12, positioning portions are provided on the three sides of the first positioning plate, and a first limiting groove for limiting the first battery cell 71 is formed on the front of the first positioning member 1. The battery cell 7 is placed in the first limiting groove, and the battery cell 7 is limited by applying a thrust in the direction of the first positioning portion 11.

[0033] In some embodiments, the width of the first positioning member 1 is smaller than the width of the first battery cell 71. When the first battery cell 71 is placed on the first positioning member 1, after the battery cell 7 is limited by the first positioning portion 11 and the second positioning portion 12, the long side of the battery cell 7 has a certain width exposed outside the first positioning member 1. The exposed portion is named the first exposed portion 711. The first exposed portion 711 is used to connect to the welding strip 6. The width of the first exposed portion 711 is 1~2mm.

[0034] In some embodiments, the positioning member also includes a second positioning member 2, which is a rectangular plate-like structure. The second positioning member 2 is pressed onto the first battery cell 71 so that the first battery cell 71 and the first positioning member 1 can fit together. Furthermore, an avoidance groove 13 is provided at a position of the first positioning portion 11 close to the second positioning member 2, and both ends of the second positioning member 2 are accommodated in the avoidance groove 13, ensuring that the second positioning member 2 has a downward pressing force on the battery cell 7, so that the battery cell 7 and the first positioning member 1 can fit better. The side of the second positioning member 2 is flush with the side of the first positioning member 1, ensuring that the first exposed portion 711 will not be blocked by the second positioning portion 12, so that the welding strip 6 can be set on the first exposed portion 711 later.

[0035] In some embodiments, a third positioning member 3 is also included. The third positioning member 3 is a strip structure with a "convex" cross section. The third positioning member 3 includes a limiting portion 31 at the lower end and a supporting portion 32 at the upper end. The limiting portion 31 is arranged in the bottom first groove 14 arranged on the lower surface of the first positioning member 1. The position of the third positioning member 3 is limited by the arrangement of the first groove 14 and the limiting portion 31. The supporting portion 32 abuts against the back of the first exposed portion 711 of the battery cell 7, which can support the first battery cell 71 and prevent the first battery cell 71 from being damaged during the process of pressing the battery cell 7 in the later process. The welding strip 6 is attached to the front of the first exposed portion 711, and the excess length of the welding strip 6 is removed. At this time, one side of the welding strip 6 is attached to the front of the first battery cell 71.

[0036] See attached Figure 1-6As shown, in some embodiments, a fourth positioning member 4 is also included. The fourth positioning member 4 is similar to the first positioning member 1 in structure and is a plate-like structure. The first positioning portion 11 and the second positioning portion 12 are provided on three sides. The first positioning portion 11 and the second positioning portion 12 form a fourth limiting groove on the upper surface of the fourth positioning member to limit the second battery cell 72. The width of the fourth positioning member 4 is smaller than the width of the second battery cell 72. When the second battery cell 72 is placed on the fourth positioning member 4, a 1-2 mm battery edge is exposed on the outside of the fourth positioning member 4, which is named the second exposed portion 721 and is used to connect the welding strip 6. After the second battery cell 72 is placed on the fourth positioning member 4, it is installed from top to bottom together with the fourth positioning member 4, in compliance with the edge of the first positioning member 1. During the installation process, the relative positions of the first positioning member 1 and the fourth positioning member 4 are limited by the first side groove 15 set on the side of the first positioning member 1 and the positioning protrusion 41 set on the side of the fourth positioning member 4. During the pressing process of the fourth positioning member 4 from top to bottom, the back side of the second exposed portion 721 of the second battery cell 72 is connected to the welding strip 6, that is, one side of the welding strip 6 is connected to the front side of the first battery cell 71, and the other side is connected to the back side of the second battery cell 72.

[0037] See attached Figure 1-8 As shown, in some embodiments, a fifth positioning member 5 is further included, and the structure of the side of the fifth positioning member 5 close to the first positioning member 1 is similar to the structure of the side of the fourth positioning member 4 close to the first positioning member 1, so that the fifth positioning member 5 can be connected to the first positioning member. Specifically, a positioning protrusion 41 is provided on the side of the fifth positioning member 5 close to the first positioning member 1, and the positioning protrusion 41 is adapted to the first side groove 15, and a bottom second groove 42 is provided on the back of the fifth positioning portion for accommodating the limiting portion 31 of the third positioning member 3.

[0038] In some embodiments, a first side groove 15 is provided on the side of the fifth positioning member 5 away from the first positioning member 1, which is used to cooperate with the positioning protrusion 41 to play a limiting role. A bottom first groove 14 is provided on the back of the fifth positioning member 5 away from the first positioning member 1, which is used to accommodate the limiting portion 31 of the third positioning member 3.

[0039] The fifth positioning member 5 is provided to connect the first positioning member 1 and the fourth positioning member 4, or multiple fifth positioning members 5 are connected in sequence to install multiple battery cells 7. Specifically, after the fourth positioning member 4 has installed and positioned the second battery cell 72, the fourth positioning member 4 is removed and replaced with the fifth positioning member 5, and then the third battery cell 73 is limited on one side of the fifth positioning member 5 by the fourth positioning member 4, and the third battery cell 73 is installed, and so on.

[0040] This application has the following advantages through multiple positioning components:

[0041] Improve manual series connection efficiency: By designing an optimized fixture structure, the burden of manual operation can be reduced, the work efficiency in the battery cell series connection process can be improved, and ineffective labor time and labor costs can be reduced.

[0042] Improve welding quality: In order to address technical problems such as inaccurate positioning and unstable welding that may occur when manually connecting battery cells in series, the invented fixture structure can accurately guide and fix the battery cells to ensure accurate welding position, thereby improving the overall quality and service life of the battery string.

[0043] Standardized production: Through the standardized design of fixtures, the consistency of each series operation is ensured, and the difference in product performance caused by different operating methods is reduced, which is conducive to the realization of large-scale and standardized production.

[0044] Reduce scrap rate: During the manual series connection of battery cells, problems such as battery cell damage and short circuit are prone to occur. The newly invented fixture structure can effectively reduce the operating error rate, thereby reducing scrap generation and saving costs.

[0045] Simple operation and training: Simplify the operation process, making it easier for staff to master operation skills and shorten the training cycle, which is conducive to the company's rapid expansion of production capacity or response to temporary human resource changes.

[0046] Compatible with battery cells of different specifications: For battery cells of different sizes and shapes, the invented fixture structure should have certain versatility and adjustability, be able to adapt to the series connection requirements of various battery cells, and improve the scope of use and utilization of the fixture.

[0047] Through the above improvements, enterprises can overcome the traditional difficulties of manually connecting battery cells in series, promote the advancement of production technology, and improve product quality and market competitiveness.

[0048] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A fixture structure for manually connecting battery cells in series, characterized in that: The invention comprises a first positioning member (1) and a fourth positioning member (4), wherein the upper surface of the first positioning member (1) is provided with a first limiting groove for accommodating a first battery cell (71), and the upper surface of the fourth positioning member (4) is provided with a fourth limiting groove for accommodating a second battery cell (72), the second battery cell (72) can extend out of the fourth limiting groove and extend in the direction of the first positioning member (1), and the battery area of ​​the second battery cell (72) that is not accommodated in the fourth limiting groove and extends in the direction of the first positioning member (1) is a second exposed portion (721).

2. The jig structure for manually connecting battery cells in series according to claim 1, characterized in that: A first side groove (15) is provided on a side of the first positioning member (1) close to the fourth positioning member (4), and a positioning protrusion (41) is provided on a side of the fourth positioning member (4) close to the first positioning member (1), wherein at least a part of the positioning protrusion (41) is accommodated in the first side groove (15).

3. The fixture structure for manually connecting battery cells in series according to claim 1, characterized in that: The first battery cell (71) can extend out of the first limiting groove and extend in the direction of the fourth positioning member (4); a battery area of ​​the first battery cell (71) that is not accommodated in the first limiting groove and extends in the direction of the fourth positioning member (4) is a first exposed portion (711).

4. The fixture structure for manually connecting battery cells in series according to claim 1, characterized in that: It also comprises a second positioning member (2), a sidewall of the first limiting groove is provided with an avoidance groove (13), the avoidance groove (13) is communicated with the first limiting groove, and two ends of the second positioning member (2) are accommodated in the avoidance groove (13).

5. The jig structure for manually connecting battery cells in series according to claim 4, characterized in that: The side edge of the second positioning member (2) close to the fourth positioning member (4) is arranged flush with the side edge of the first positioning member (1) close to the fourth positioning member (4).

6. The fixture structure for manually connecting battery cells in series according to claim 3, characterized in that: It also includes a third positioning member (3), which is located below the first exposed portion (711) and abuts against the back surface of the first exposed portion (711).

7. The jig structure for manually connecting battery cells in series according to claim 6, characterized in that: The third positioning member (3) is a strip-shaped structure with a "convex" cross-section. The third positioning member (3) comprises a limiting portion (31) located at the lower end and a supporting portion (32) located at the upper end. At least a portion of the limiting portion (31) is accommodated in a bottom first groove (14) provided on the lower surface of the first positioning member (1). At least a portion of the limiting portion (31) is accommodated in a bottom second groove (42) provided on the lower surface of the fourth positioning member (4). The supporting portion (32) is in contact with the back surface of the first exposed portion (711).

8. The fixture structure for manually connecting battery cells in series according to claim 1, characterized in that: It also comprises a fifth positioning member (5), wherein the fifth positioning member (5) can connect the first positioning member (1) and the fourth positioning member (4).

9. The jig structure for manually connecting battery cells in series according to claim 8, characterized in that: A positioning protrusion (41) is provided on one side of the fifth positioning member (5) close to the first positioning member (1), and the positioning protrusion (41) is matched with the first side groove (15); a bottom second groove (42) is provided on the back side of the fifth positioning member (5) for accommodating the limiting portion (31) of the third positioning member (3).

10. The fixture structure for manually connecting battery cells in series according to claim 9, characterized in that: A first side groove (15) is provided on the side of the fifth positioning member (5) away from the first positioning member (1), and the first side groove (15) can cooperate with the positioning protrusion (41).

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