Solder strip flattening device and battery piece series welding machine

Abstract

The utility model relates to a welding strip flattening device and a battery piece series welding machine. The welding strip flattening device comprises a base, a flattening assembly and a driving assembly. A flattening station is arranged on the base; the flattening assembly is movably arranged on the base; the driving assembly comprises a driving part, a connecting rod and a pressing block, the driving part is fixed to the base, the first end of the connecting rod is connected with the output end of the driving part, the second end of the connecting rod is movably connected to the base, and the pressing block is detachably fixed to the second end of the connecting rod; the driving piece is configured to be capable of driving the connecting rod to rotate so as to drive the pressing block to enable the flattening assembly to abut against the flattening station in a reciprocating mode. The welding strip flattening device provided by the utility model has the advantage of low maintenance cost.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and more specifically, to a welding strip flattening device and a battery cell string welding machine. Background Art

[0002] Existing welding ribbon flattening devices typically use a pneumatic cylinder to rotate a connecting rod, which presses down on one end to flatten the welding ribbon. However, the high frequency of the flattening action causes accelerated wear on the connecting rod's extrusion end, shortening the connecting rod's overall lifespan and increasing equipment maintenance costs. Utility Model Content

[0003] One purpose of the present invention is to provide a welding ribbon flattening device and a battery cell string welding machine to at least solve one of the problems of the background technology.

[0004] According to a first aspect of the present invention, a welding ribbon flattening device is provided, comprising:

[0005] A base, wherein a flattening station is provided on the base;

[0006] a flattening assembly, the flattening assembly being movably disposed on the base;

[0007] A driving assembly, comprising a driving member, a connecting rod, and a pressure block, wherein the driving member is fixed to the base, a first end of the connecting rod is connected to an output end of the driving member, and a second end is movably connected to the base, and the pressure block is detachably fixed to the second end of the connecting rod;

[0008] The driving member is configured to drive the connecting rod to rotate, so as to drive the pressing block to cause the flattening assembly to press back and forth against the flattening station.

[0009] Optionally, the driving member further includes a connecting block, and the pressing block is detachably embedded in the bottom of the connecting rod through the connecting block.

[0010] Optionally, the engaging surface between the pressing block and the connecting rod is a V-shaped surface.

[0011] Optionally, the pressing block has an arc-shaped surface, so that the pressing block is in line contact with the flattening assembly.

[0012] Optionally, the drive assembly further includes a movable joint, the drive member is a cylinder, the output end of the cylinder is slidingly connected to the first end of the connecting rod through the movable joint, and the second end of the connecting rod is rotationally connected to the base through a fixed shaft.

[0013] Optionally, a waist-shaped hole is provided on the first end of the connecting rod, the first end of the movable joint is connected to the output end of the cylinder through a thread, and the second end of the movable joint is passed through the waist-shaped hole through a rotating shaft.

[0014] Optionally, the flattening assembly includes a connecting shaft, an upper flattening head and an elastic member;

[0015] The connecting shaft is movably assembled on the base through the elastic member, the upper flattening head is fixed on the second end of the connecting shaft and is opposite to the flattening station, the pressing block contacts the first end of the connecting shaft, so that the second end of the connecting shaft can drive the upper flattening head to reciprocate and press against the flattening station, and the elastic member can enable the connecting shaft to drive the upper flattening head to disengage from the flattening station.

[0016] Optionally, the flattening assembly further includes a lower flattening head, which is disposed on the base and located at the flattening station, opposite to the upper flattening head.

[0017] Optionally, the flattening stations, the flattening components and the driving components are provided in plurality, and the plurality of driving components can correspond one to one to make the plurality of flattening components press back and forth against the corresponding flattening stations.

[0018] According to a second aspect of the present invention, a battery cell string welding machine is provided, comprising the welding ribbon flattening device described in the first aspect.

[0019] One technical effect of the present invention is that, by designing the connecting rod and the pressure block as a detachable split structure, the pressure block can be replaced separately after multiple extrusion wear, thereby reducing maintenance costs and improving maintenance efficiency.

[0020] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0022] Figure 1 The utility model is a structural schematic diagram of a welding strip flattening device provided by the utility model.

[0023] Figure 2 yes Figure 1 side view.

[0024] Figure 3 An assembly diagram of a drive assembly and a flattening assembly provided by the utility model.

[0025] Figure 4 This is a structural schematic diagram of a connecting rod provided by the utility model.

[0026] Description of reference numerals:

[0027] 1. Base; 2. Cylinder; 3. Connecting rod; 31. Waist-shaped hole; 32. Connecting block; 33. V-shaped surface; 4. Pressing block; 5. Fixed shaft; 6. Movable joint; 61. Rotating shaft; 7. Connecting shaft; 8. Upper flattening head; 9. Elastic part; 10. Lower flattening head. DETAILED DESCRIPTION

[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0030] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0031] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0032] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0033] In photovoltaic cell production, a cell is constructed from multiple cells connected in series via solder ribbons, with the cells and ribbons arranged in an alternating sequence. Using circular-cross-section ribbons to weld the cells results in significant bending and pressure during the subsequent string lamination process. Due to the thin and brittle structure of the cells, they are prone to cracking, breakage, and other undesirable conditions. Therefore, the ribbons must be flattened before being welded to the cells.

[0034] like Figures 1 to 4As shown, according to the first aspect of the present invention, a welding strip flattening device is provided, comprising: a base 1, a flattening assembly and a driving assembly; a flattening station is provided on the base 1; the flattening assembly is movably provided on the base 1; the driving assembly comprises a driving member, a connecting rod 3 and a pressing block 4, the driving member is fixed on the base 1, the first end of the connecting rod 3 is connected to the output end of the driving member, and the second end is movably connected to the base 1, and the pressing block 4 is detachably fixed to the second end of the connecting rod 3; the driving member is configured to be able to drive the connecting rod 3 to rotate, so as to drive the pressing block 4 to make the flattening assembly reciprocate and press against the flattening station.

[0035] Specifically, in this embodiment, the base 1 is used to support the flattening assembly and the driving assembly, and the driving assembly is used to enable the flattening assembly to be pressed back and forth against the flattening station to flatten the welding strip placed at the flattening station. The flattening station is usually an area on the base 1 opposite to the position of the flattening assembly. It can be a part of the base 1 or a separately provided structural member, and is specifically designed according to actual needs. In addition, when the flattening assembly is pressed back and forth against the flattening station to flatten the welding strip, the separation of the flattening assembly and the flattening station can be achieved by the driving assembly or by components such as springs, and the pressing block 4 is used to squeeze the flattening assembly to move. When the flattening assembly is not squeezed, it may or may not be in contact with the flattening assembly. The present invention does not impose any restrictions on this.

[0036] In actual applications, the flattening action of the welding strip flattening device is executed at a high frequency, which causes the pressure block 4 to wear faster when squeezing the flattening component. In this embodiment, by detachably fixing the pressure block 4 to the second end of the connecting rod 3, it is possible to squeeze the flattening component and move it to press against the flattening station. In addition, when the pressure block 4 is worn and damaged, only the pressure block 4 can be replaced without replacing the entire connecting rod 3, which greatly reduces maintenance costs and improves maintenance efficiency.

[0037] Furthermore, since wear only occurs on the pressing block 4, in practical applications, the service life of the pressing block 4 can be further extended by improving its wear resistance, thereby reducing design and production costs, extending the maintenance cycle of the flattening device, and reducing maintenance costs.

[0038] In the above embodiment, the wear resistance of the pressing block 4 can be achieved by selecting a highly wear-resistant material, and the removability of the pressing block 4 can be achieved through structural forms such as screws or snaps. In addition, the separate design of the pressing block 4 and the connecting rod 3 allows the pressing block 4 to be customized according to actual needs to adapt to different equipment requirements and facilitate future product iterations. The driving element can be implemented using a servo motor or a pneumatic cylinder 2.

[0039] Alternatively, as Figures 3 and 4 As shown, the driving assembly further includes a connecting block 32 , and the pressing block 4 is embedded in the bottom of the connecting rod 3 through the connecting block 32 .

[0040] Specifically, in actual applications, based on the generally small size of the compression block 4, the second end of the connecting rod 3 is detachably connected to the compression block 4 via the connecting block 32. This allows the compression block 4 to be replaced by removing the connecting block 32, thereby improving the convenience of replacing the compression block 4. The detachable connection of the connecting block 32 can improve the reliability of the connection between the connecting rod 3 and the compression block 4 compared to a simple screw connection.

[0041] In addition, the pressing block 4 is embedded in the bottom of the connecting block 32. On the one hand, the embedded assembly form can improve the stability of the connection and improve the reliability of the device; on the other hand, the position of the pressing block 4 is convenient for acting on the flattening component, avoiding interference from other components when squeezing the flattening component again.

[0042] Alternatively, as Figure 4 As shown, the engaging surface between the pressure block 4 and the connecting rod 3 is a V-shaped surface 33 .

[0043] Specifically, in this embodiment, the engaging surface of the pressing block 4 and the connecting rod 3 is designed as a V-shaped surface 33, which not only facilitates assembly, but also increases the contact area between the two, improves the stability of the connection between the two, and thus improves the overall reliability of the device. Among them, the second end of the connecting rod 3 can be designed as an L-shaped structure, referring to Figure 3 , which facilitates the assembly of the pressing block 4 and the connecting rod 3.

[0044] Alternatively, as Figure 3 As shown, the pressing block 4 has an arc-shaped surface, so that the pressing block 4 is in line contact with the flattening assembly.

[0045] Specifically, in this embodiment, the linear contact between the pressing block 4 and the flattening assembly enables the flattening assembly to evenly bear the transmission force on the pressing block 4, avoiding single-point or local overload, significantly reducing wear and damage caused by local stress concentration, and at the same time improving the service life of the pressing block 4 and the flattening assembly.

[0046] Furthermore, the line contact force transmission method offers improved flexibility, making it suitable for applications requiring force transmission around corners or along complex paths. This improves the flexibility and adaptability of force transmission between the drive assembly and the flattening assembly. Furthermore, the line contact method reduces friction between the pressure block 4 and the flattening assembly, thereby reducing energy loss, improving transmission efficiency, and enhancing the overall performance of the ribbon flattening device.

[0047] Alternatively, as Figure 3 As shown, the drive assembly also includes a movable joint 6, the driving member is a cylinder 2, the output end of the cylinder 2 is slidingly connected to the first end of the connecting rod 3 through the movable joint 6, and the second end of the connecting rod 3 is rotationally connected to the base 1 through the fixed shaft 5.

[0048] Specifically, in this embodiment, the output end (i.e., the piston end) of the cylinder 2 is connected to the connecting rod 3 through the movable joint 6, so that in actual work, the output force of the cylinder 2 is transmitted to the connecting rod 3 through the movable joint 6, and the movable wear between the piston end and the connecting rod 3 is replaced by the movable joint 6. In actual application, later maintenance and replacement can be achieved by replacing the movable joint 6, thereby improving the service life of the cylinder 2.

[0049] In addition, the movable joint 6 is connected to the piston end through a threaded connection, which on the one hand facilitates the assembly and replacement of the piston joint, and on the other hand can further optimize the force applied to the piston rod during the extension and retraction process by setting the rotation direction of the thread, thereby comprehensively improving the service life of the cylinder 2.

[0050] Alternatively, as Figure 3 As shown, a waist-shaped hole 31 is provided on the first end of the connecting rod 3, the first end of the movable joint 6 is connected to the output end of the cylinder 2 through a thread, and the second end of the movable joint 6 is passed through the waist-shaped hole 31 through the rotating shaft 61.

[0051] Specifically, in this embodiment, the rotating shaft 61 at the second end of the movable joint 6 slides within the waist-shaped hole 31 under the action of the cylinder 2, causing the connecting rod 3 to rotate in a predetermined direction. This, in turn, causes the second end of the connecting rod 3 to drive the pressure block 4 to compress the flattening assembly, thereby flattening the welding strip. The design of the waist-shaped hole 31 converts the linear motion of the piston rod of the cylinder 2 into rotation of the connecting rod 3. Furthermore, the pressure block 4 converts the rotation of the connecting rod 3 into linear motion of the flattening assembly, thus flattening the assembly. The entire transmission structure is compact and easy to maintain and replace.

[0052] Alternatively, as Figure 1 and Figure 3 As shown, the flattening assembly includes a connecting shaft 7, an upper flattening head 8 and an elastic member 9; the connecting shaft 7 is movably assembled on the base 1 through the elastic member 9, the upper flattening head 8 is fixed on the second end of the connecting shaft 7 and is opposite to the flattening station, the pressing block 4 is in contact with the first end of the connecting shaft 7, so that the second end of the connecting shaft 7 can drive the upper flattening head 8 to reciprocate and press against the flattening station, and the elastic member 9 can enable the connecting shaft 7 to drive the upper flattening head 8 to leave the flattening station.

[0053] Specifically, in this embodiment, the connection shaft 7 facilitates the movable assembly of the upper flattening head 8 on the base 1, and the elastic member 9 facilitates the restoration of the upper flattening head 8 to its initial position (i.e., the state where the upper flattening head 8 is at its furthest point away from the flattening station) via the connection shaft 7, thereby ensuring that the flattening assembly can contact the pressure head and improving the accuracy of the operation of the entire device. The elastic member 9 can be configured as a compression spring.

[0054] Alternatively, as Figure 1 and Figure 3As shown, the flattening assembly further includes a lower flattening head 10 , which is disposed on the base 1 and located at the flattening station, opposite to the upper flattening head 8 .

[0055] Specifically, in practical applications, the support of the soldering ribbon can also be achieved by the lower flattening head 10, so that the upper flattening head 8 can flatten the soldering ribbon by pressing against the lower flattening head 10. The provision of the lower flattening head 10 facilitates the positioning and flattening of the soldering ribbon, and can extend its service life and facilitate replacement and repair after damage through the design of materials and structures.

[0056] Alternatively, as Figure 1 and Figure 2 As shown, there are multiple flattening stations, flattening assemblies and driving assemblies, and the multiple driving assemblies can correspond one to one to make the multiple flattening assemblies press back and forth on the corresponding flattening stations.

[0057] Specifically, in actual applications, in order to improve the flattening efficiency of the welding strip, multiple flattening components and corresponding flattening stations can be set at the same time. Through the drive of the driving member, the second end of the connecting rod 3 can drive the pressing block 4 to extrude each flattening component one by one, so that multiple flattening components can be reciprocated and pressed against the corresponding flattening station, which reduces the flattening cost and improves the flattening efficiency.

[0058] The flattening components can be arranged in a sequentially spaced arrangement, which not only improves the compactness of the device but also prevents interference between the components. Furthermore, the heights of two adjacent drive components can be staggered, further improving the compactness of the device and reducing its space usage.

[0059] According to the second aspect of the present invention, Figures 1 to 4 , provides a battery cell string welding machine, including the welding ribbon flattening device of the first aspect.

[0060] Specifically, the solder strip flattening process of the cell stringer provided in this embodiment is performed by the solder strip flattening device provided in the first aspect of the present invention. The solder strip flattening device has a detachable connection between the pressing block 4 and the connecting rod 3, which makes it easy to maintain and replace in actual use, thereby increasing the overall service life of the connecting rod 3 and reducing the maintenance cost of the device. Therefore, when used in the cell stringer, the overall maintenance cost of the stringer can be reduced.

[0061] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0062] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art will appreciate that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A welding ribbon flattening device, characterized in that: include: A base, wherein a flattening station is provided on the base; a flattening assembly, the flattening assembly being movably disposed on the base; A driving assembly, comprising a driving member, a connecting rod, and a pressure block, wherein the driving member is fixed to the base, a first end of the connecting rod is connected to an output end of the driving member, and a second end is movably connected to the base, and the pressure block is detachably fixed to the second end of the connecting rod; The driving member is configured to drive the connecting rod to rotate, so as to drive the pressing block to cause the flattening assembly to press back and forth against the flattening station.

2. The welding ribbon flattening device according to claim 1, characterized in that: The driving assembly further comprises a connecting block, and the pressing block is detachably embedded in the bottom of the connecting rod through the connecting block.

3. The welding ribbon flattening device according to claim 2, characterized in that: The engaging surface between the pressing block and the connecting rod is a V-shaped surface.

4. The welding ribbon flattening device according to claim 2, characterized in that: The pressing block has an arc-shaped surface, so that the pressing block is in line contact with the flattening component.

5. The welding ribbon flattening device according to claim 1, characterized in that: The driving assembly also includes a movable joint, the driving member is a cylinder, the output end of the cylinder is slidingly connected to the first end of the connecting rod through the movable joint, and the second end of the connecting rod is rotationally connected to the base through a fixed shaft.

6. The welding ribbon flattening device according to claim 5, characterized in that: A waist-shaped hole is provided on the first end of the connecting rod, the first end of the movable joint is connected to the output end of the cylinder through a thread, and the second end of the movable joint is passed through the waist-shaped hole through a rotating shaft.

7. The welding ribbon flattening device according to claim 1, characterized in that: The flattening assembly includes a connecting shaft, an upper flattening head and an elastic member; The connecting shaft is movably assembled on the base through the elastic member, the upper flattening head is fixed on the second end of the connecting shaft and is opposite to the flattening station, the pressing block contacts the first end of the connecting shaft, so that the second end of the connecting shaft can drive the upper flattening head to reciprocate and press against the flattening station, and the elastic member can enable the connecting shaft to drive the upper flattening head to disengage from the flattening station.

8. The welding ribbon flattening device according to claim 7, characterized in that: The flattening assembly further includes a lower flattening head, which is arranged on the base and located at the flattening station, opposite to the upper flattening head.

9. The welding ribbon flattening device according to any one of claims 1 to 8, characterized in that: The flattening stations, the flattening components and the driving components are respectively provided in plurality, and the plurality of driving components can correspond one to one to make the plurality of flattening components press back and forth against the corresponding flattening stations respectively.

10. A battery cell string welding machine, characterized in that: It comprises the welding strip flattening device as described in any one of claims 1-9.

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