Welding tool for battery piece

Abstract

The utility model discloses a photovoltaic assembly, comprising a mounting seat provided with a plurality of pinholes, the inner diameter d1 of which is greater than 3.2 mm; the needle pressing assemblies are arranged in the needle pressing holes in a one-to-one mode, and each needle pressing assembly comprises a needle sleeve and a pressing needle arranged in the needle sleeve. According to the utility model, the needle sleeve is embedded in the needle pressing hole, and the pressing needle is embedded in the needle sleeve, so that the pressing needle is not in direct contact with the mounting seat any more, the problems of welding strip head warping, welding strip deviation, insufficient welding and the like caused by increased shaking amplitude of the pressing needle due to the fact that the needle pressing hole is abraded greatly are solved, the welding yield is improved, and the welding quality is improved. And the frequency of shutdown caused by tool problems is reduced, and the material cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic components, in particular to welding tools for photovoltaic components and battery sheets. Background Art

[0002] Solar photovoltaic power generation is a technology that uses the semiconductor photovoltaic effect to convert light energy into electrical energy. Using solar energy for photovoltaic power generation is a sustainable and clean energy generation method and one of the effective ways to solve the earth's pollution and energy shortages. Therefore, photovoltaic modules, as the core components of solar power generation, have broad market prospects and huge application value.

[0003] In the production process of photovoltaic modules, the battery cells are welded by a stringer. The operation process of the stringer is as follows: the traction claw pulls the welding belt to a certain position on the conveyor belt; the robot puts the battery cell on the welding belt on the conveyor belt, and puts the welding tooling on the battery on the conveyor belt to press the welding belt and avoid deviation; the robot takes the tooling on the battery and places it on the CDD platform; the string cutter cuts the arranged strings.

[0004] At present, the inner wall of the pressure pin hole of aluminum welding tooling will wear out due to long-term use, resulting in an increase in the inner wall diameter, which will increase the swing amplitude of the pressure pin, causing problems such as welding strip warping, welding strip deviation, and cold welding, resulting in a low welding yield rate. At the same time, when the pressure pin hole diameter of the welding tooling increases, the welding tooling is scrapped. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a welding tool for battery cells.

[0006] In order to achieve the above-mentioned utility model object, a technical solution adopted by the utility model is: a welding tool for a battery cell, comprising: a mounting seat, provided with a plurality of pressure pin holes, wherein the inner diameter d1 of the pressure pin holes is greater than 3.2 mm;

[0007] A plurality of pressing needle assemblies are arranged one-to-one in the pressing needle hole, and the pressing needle assembly comprises a needle sleeve and a pressing needle arranged in the needle sleeve.

[0008] In certain embodiments, the outer diameter of the needle sleeve d2>d1, and the needle sleeve is embedded in the needle pressing hole by low temperature.

[0009] In some embodiments, the inner diameter of the pressure pin hole is d1=3.9 mm;

[0010] The outer diameter d2 of the needle sleeve is 4.0 mm, the outer diameter d3 of the needle sleeve is 3.2 mm, and the length L of the needle sleeve is 4.0 mm.

[0011] In certain embodiments, the needle sleeve is a tungsten steel sleeve.

[0012] In some embodiments, the pressing pin is used to contact the soldering ribbon, and the pressing pin is staggered with each soldering point arranged along the first direction on the battery cell to press the soldering ribbon onto the battery cell, and the number of the pressing pins is greater than the number of the soldering points.

[0013] In some embodiments, at least two of the pressure pins are located between any two adjacent welding points.

[0014] In some embodiments, the mounting base includes a mounting frame and two mounting blocks fixed at two ends of the mounting frame along the length direction of the mounting frame, and a plurality of the pressure pin holes are provided on the mounting frame.

[0015] In certain embodiments, the mounting frame includes a plurality of transverse ribs and a plurality of longitudinal ribs arranged in a cross manner, and a plurality of the pressure pin holes are distributed along the length direction of the transverse ribs.

[0016] In some embodiments, the transverse ribs and the longitudinal ribs are arranged to form a plurality of light-transmitting holes.

[0017] In some embodiments, the mounting block is an iron mounting block, and the mounting bracket is an aluminum mounting bracket.

[0018] The utility model enlarges the pressing pin hole, inlays a needle sleeve in the pressing pin hole and embeds the pressing pin in the needle sleeve, so that the pressing pin no longer directly contacts the mounting seat, thereby avoiding problems such as welding strip warping, welding strip deviation, and cold welding caused by increased shaking amplitude of the pressing pin due to enlargement of the pressing pin hole due to wear, improves the welding yield rate, reduces the number of shutdowns due to tooling problems, and saves material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the welding tooling of the battery cell of the utility model.

[0020] Explanation of symbols:

[0021] 1. Mounting block; 2. Mounting frame; 20. Needle pressing hole; 21. Horizontal ribs; 22. Longitudinal ribs; 23. Light-transmitting hole; 3. Needle pressing assembly; 31. Needle pressing; 32. Needle sleeve. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] 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 positions or positional relationships based on the positions or positional relationships 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.

[0025] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0026] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Reference Figure 1 The utility model provides a welding tool for a battery cell, comprising a mounting seat and a plurality of pressure pin assemblies 3, wherein the pressure pin assemblies 3 are provided with a plurality of pressure pin holes 20, and the inner diameter d1 of the pressure pin hole 20 is greater than 3.2 mm;

[0029] The pressing needle assembly 3 is arranged in a one-to-one manner in the pressing needle hole. The pressing needle assembly 3 includes a needle sleeve 32 and a pressing needle 31 arranged in the needle sleeve 32 .

[0030] In some embodiments, the outer diameter d2 of the needle sleeve 32 is greater than d1, and the needle sleeve 32 is inserted into the needle pressing hole 20 by low temperature. Preferably, the inner diameter d1 of the needle pressing hole is 3.9 mm; the outer diameter d2 of the needle sleeve is 4.0 mm, the outer diameter d3 of the needle sleeve is 3.2 mm, and the length L of the needle sleeve is 4.0 mm.

[0031] By embedding the needle sleeve 32 in the pressure pin hole 20 and embedding the pressure pin 31 in the needle sleeve 32, the pressure pin 31 is no longer in direct contact with the mounting seat, avoiding the problems of welding strip warping, welding strip deviation, and cold welding caused by the increase in the amplitude of the pressure pin 31 due to the wear of the pressure pin hole 20, improving the welding yield rate, and reducing the number of shutdowns caused by tooling problems. At the same time, the problem of the inner diameter increasing due to the long-term use of the welding tool can be solved by replacing the needle sleeve 32, saving material costs.

[0032] Furthermore, the needle sleeve is a tungsten steel sleeve, which can effectively enhance the wear resistance of the needle pressing assembly 3.

[0033] In some embodiments, the pressure pins 31 are used to contact the soldering strip, and the pressure pins 31 are staggered with each soldering point arranged on the battery cell along the first direction to press the soldering strip onto the battery cell. The number of pressure pins 31 is greater than the number of soldering points, so that there are more pressure points in contact with the soldering strip and the distribution is denser, so as to achieve the effect of improving the welding efficiency. The first direction is parallel to the extension mode of the soldering strip.

[0034] Furthermore, in order to further improve the pressing effect of the welding tool on the welding strip, at least two pressing needles 31 are located between any two adjacent welding points. Preferably, at least two pressing needles 31 are located between every two adjacent welding points.

[0035] In some embodiments, the mounting base includes a mounting frame 2 and two mounting blocks 1 fixed at two ends of the mounting frame 2 along the length direction of the mounting frame 2 , and a plurality of pin-pressing holes 20 are provided on the mounting frame 2 .

[0036] In some embodiments, the mounting frame 2 includes a plurality of transverse ribs 21 and a plurality of longitudinal ribs 22 arranged in a cross manner, and a plurality of pin-pressing holes 20 are distributed along the length direction of the transverse ribs 21 .

[0037] In some embodiments, the transverse ribs 21 and the longitudinal ribs 22 are arranged to form a plurality of light-transmitting holes 23 .

[0038] In some embodiments, the mounting block 1 is an iron mounting block, and the mounting frame 2 is an aluminum mounting frame 2 .

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the above embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A welding tool for a battery cell, characterized in that: include: The mounting seat is provided with a plurality of pressure pin holes, and the inner diameter d1 of the pressure pin holes is greater than 3.2 mm; A plurality of pressing needle assemblies are arranged one-to-one in the pressing needle hole, and the pressing needle assembly comprises a needle sleeve and a pressing needle arranged in the needle sleeve.

2. The battery cell welding tool according to claim 1, characterized in that: The outer diameter of the needle sleeve is d2>d1, and the needle sleeve is embedded in the needle pressing hole at low temperature.

3. The battery cell welding tool according to claim 2, characterized in that: The inner diameter of the pressure pin hole is d1=3.9 mm; The outer diameter d2 of the needle sleeve is 4.0 mm, the outer diameter d3 of the needle sleeve is 3.2 mm, and the length L of the needle sleeve is 4.0 mm.

4. The battery cell welding tool according to any one of claims 1 to 3, characterized in that: The needle sleeve is a tungsten steel sleeve.

5. The battery cell welding tool according to any one of claims 1 to 3, characterized in that: The pressing pins are used to contact the soldering strips. The pressing pins are staggered with each soldering point arranged along a first direction on the battery cell so as to press the soldering strips onto the battery cell. The number of the pressing pins is greater than the number of the soldering points.

6. The battery cell welding tool according to claim 5, characterized in that: At least two of the pressure pins are located between any two adjacent welding points.

7. The battery cell welding tool according to any one of claims 1 to 3, characterized in that: The mounting seat comprises a mounting frame and two mounting blocks fixed at two ends of the mounting frame along the length direction of the mounting frame, and a plurality of the pressing pin holes are arranged on the mounting frame.

8. The battery cell welding tool according to claim 7, characterized in that: The mounting frame comprises a plurality of transverse ribs and a plurality of longitudinal ribs arranged in a cross manner, and a plurality of the pressing pin holes are distributed along the length direction of the transverse ribs.

9. The battery cell welding tool according to claim 8, characterized in that: The transverse ribs and the longitudinal ribs are arranged to form a plurality of light-transmitting holes.

10. The battery cell welding tool according to claim 7, characterized in that: The mounting block is an iron mounting block, and the mounting frame is an aluminum mounting frame.

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