Welding ribbon processing device and battery cell string welding equipment

Abstract

The present invention discloses a welding strip processing device and a battery cell string welding device, wherein the welding strip processing device comprises at least two clamping jaw mechanisms for pulling the welding strip and a cutting knife mechanism for cutting the welding strip after the welding strip is pulled; each of the clamping jaw mechanisms comprises a clamping jaw frame, a general driving mechanism for driving the clamping jaw frame to move, and at least two clamping jaw assemblies mounted on the clamping jaw frame, wherein each of the clamping jaw assemblies comprises a clamping jaw for clamping the welding strip and a sub-driving mechanism for driving the clamping jaw to move relative to the clamping jaw frame to pull the welding strip. In the technical solution of the present invention, the welding strip processing efficiency is high, and it can keep up with the handling rhythm of the battery cells in the battery cell string welding device, thereby improving the laying efficiency of the battery cells and welding strips, thereby improving the production efficiency of the battery cell string welding device.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic cell production, and in particular relates to a welding strip processing device and a cell string welding device. Background Art

[0002] Cell string welding equipment is one of the important equipment in the production process of solar cells. It is used to weld individual cells into cell strings. Before welding, the fixed-length welding ribbon needs to be pre-laid on the cell and fixed, so the welding ribbon needs to be processed in advance.

[0003] The traditional way of processing solder strips is generally to use a clamp to stretch the solder strip forward to a fixed length, then cut it to a fixed length with a cutter, move the clamp forward with the fixed-length solder strip, and lay the solder strip on the welding conveyor belt, stack it with the battery cells placed on it, and then the clamp returns to the position of pulling the solder strip, repeating the action to form a cycle.

[0004] Since the welding ribbons and battery cells are stacked alternately in a cyclic sequence, and the battery cell transportation rhythm is relatively fast, the efficiency of pulling and laying the welding ribbons is relatively slow. Therefore, when the battery cells are transported to the top of the welding conveyor belt, it is necessary to wait for the clamps to pull the welding ribbons to the predetermined position before placing the battery cells, resulting in low production efficiency of the battery cell string welding equipment, which is not conducive to actual production. Summary of the invention

[0005] In view of this, the present invention aims to provide a welding ribbon processing device and a battery cell string welding device to solve the problem of low efficiency of battery cell string welding caused by low efficiency of welding ribbon traction and laying in the prior art.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] The present invention provides a welding strip processing device, the welding strip processing device comprising at least two clamping jaw mechanisms for pulling the welding strip and a cutting knife mechanism for cutting the welding strip after the welding strip is pulled;

[0008] Each of the clamping mechanisms comprises a clamping frame, a main driving mechanism for driving the clamping frame to move, and at least two clamping assemblies mounted on the clamping frame, wherein each of the clamping assemblies comprises a clamping jaw for clamping the welding strip and a sub-driving mechanism for driving the clamping jaw to move relative to the clamping jaw frame to pull the welding strip.

[0009] Preferably, the sub-drive mechanism of at least one of the clamping jaw assemblies in each of the clamping jaw mechanisms includes a transverse movement mechanism and a longitudinal movement mechanism, the transverse movement mechanism is used to drive the clamping jaw to move along the traction direction of the welding strip, and the longitudinal movement mechanism is used to drive the clamping jaw to move in a direction perpendicular to the traction direction.

[0010] Preferably, the fixed end of the transverse movement mechanism is fixed on the clamping claw frame, the fixed end of the longitudinal movement mechanism is connected to the driving end of the transverse movement mechanism, and the clamping claw is installed on the driving end of the longitudinal movement mechanism.

[0011] Preferably, the sub-driving mechanism of at least one of the clamping jaw assemblies in each of the clamping jaw mechanisms comprises a longitudinal movement mechanism for driving the clamping jaw to move along a direction perpendicular to the pulling direction of the welding strip.

[0012] Preferably, the longitudinal movement mechanism is configured to drive the clamping jaw to rise and fall in a vertical direction.

[0013] Preferably, each of the clamping jaw mechanisms has the same structure.

[0014] Preferably, the overall driving mechanism is configured to drive the clamping jaw frame to move along the pulling direction of the welding strip.

[0015] Preferably, the solder strip processing device comprises two clamping jaw mechanisms, at least two clamping jaw assemblies of each clamping jaw mechanism are configured to clamp the solder strip in sequence and pull the solder strip, and the two clamping jaw mechanisms clamp the solder strip and pull the solder strip alternately and cyclically through their respective clamping jaw assemblies;

[0016] The two clamping jaw mechanisms are respectively arranged at two opposite sides of the welding strip in the pulling state; or, the two clamping jaw mechanisms are arranged at the same side of the welding strip in the pulling state.

[0017] Preferably, the cutting mechanism comprises a welding strip holding component for positioning the welding strip and two cutting knives arranged opposite to each other and close to the welding strip holding component.

[0018] According to another aspect of the present invention, there is also provided a battery cell string welding device, the battery cell string welding device comprising a welding conveying device, a welding device, a battery cell feeding device and the welding ribbon processing device as described above;

[0019] The battery cell feeding device provides battery cells to the welding conveyor device, the solder strip processing device pulls and cuts the solder strip and lays the solder strip on the welding conveyor device, so that the battery cells and the solder strip are stacked on the welding conveyor device, the welding conveyor device transports the stacked battery cells and solder strips to the welding station, and the welding device welds the battery cells and solder strips located at the welding station to form a battery string.

[0020] In the technical solution provided by the present invention, by providing at least two clamping jaw mechanisms, each of which is provided with at least two clamping jaw assemblies for clamping and pulling the welding strip, the processing efficiency of the welding strip is greatly improved. In this way, in the battery cell string welding equipment, the supply of the welding strip can keep up with the handling rhythm of the battery cell, the laying efficiency of the welding strip and the battery cell is improved, and thus the production efficiency of the battery cell string welding equipment is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] In the attached picture:

[0023] Figure 1 It is a schematic diagram of a first state of a welding strip processing device processing a welding strip according to one embodiment of the present invention;

[0024] Figure 2 A schematic diagram of a second state of the welding strip processing device processing the welding strip;

[0025] Figure 3 A schematic diagram of a third state in which the welding strip processing device processes the welding strip;

[0026] Figure 4 A schematic diagram of a fourth state in which the welding strip processing device processes the welding strip;

[0027] Figure 5 It is a schematic diagram of the structure of the welding strip processing device and the welding conveying device.

[0028] Description of reference numerals:

[0029] 11-first clamping jaw; 12-second clamping jaw; 21-third clamping jaw; 22-fourth clamping jaw; 31-first cutter; 32-second cutter; 4-welding strip; 5-welding conveying device; 6-welding strip processing device. DETAILED DESCRIPTION

[0030] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the present disclosure will be more comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0031] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known structures, methods, devices, implementations, materials or operations are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0032] For ease of description, spatially relative terms such as "upper", "lower", "left", "right", etc. may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the elements described as being "under" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can also be positioned in other ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used here can be interpreted accordingly.

[0033] The present invention provides a welding strip processing device, which comprises at least two clamping jaw mechanisms for pulling the welding strip and a cutting knife mechanism for cutting the welding strip after the welding strip is pulled;

[0034] Each clamping mechanism comprises a clamping frame, a main driving mechanism for driving the clamping frame to move, and at least two clamping assemblies mounted on the clamping frame, wherein each clamping assembly comprises a clamping jaw for clamping the welding strip and a sub-driving mechanism for driving the clamping jaw to move relative to the clamping jaw frame to pull the welding strip.

[0035] In the welding strip processing device provided by the present invention, at least two clamping jaw mechanisms are provided, and each clamping jaw mechanism is provided with at least two clamping jaw assemblies for clamping and pulling the welding strip, thereby greatly improving the processing efficiency of the welding strip. In this way, in the battery cell string welding equipment, the supply of welding strips can keep up with the transportation rhythm of the battery cells, the laying efficiency of welding strips and battery cells is improved, and thus the production efficiency of the battery cell string welding equipment is improved.

[0036] In the technical solution provided by the present invention, preferably, the sub-driving mechanism of at least one clamping assembly in each clamping mechanism includes a transverse movement mechanism and a longitudinal movement mechanism, wherein the transverse movement mechanism is used to drive the clamping jaw to move along the traction direction of the welding strip, and the longitudinal movement mechanism is used to drive the clamping jaw to move in a direction perpendicular to the traction direction.

[0037] Preferably, the sub-driving mechanism of at least one of the clamping jaw assemblies in each clamping jaw mechanism comprises a longitudinal movement mechanism for driving the clamping jaw to move along a direction perpendicular to the pulling direction of the welding strip.

[0038] like Figure 1-Figure 4 In the illustrated embodiment, the ribbon processing device includes two clamping mechanisms, each of which includes two clamping assemblies.

[0039] Specifically, in this embodiment, in the first clamping mechanism: one of the clamping components includes the first clamping jaw 11 and a sub-driving mechanism (not shown in the figure) for driving the first clamping jaw 11 to move, and the other clamping component includes the second clamping jaw 12 and a sub-driving mechanism (not shown in the figure) for driving the second clamping jaw 12 to move. Similarly, in the second clamping mechanism: one of the clamping components includes the third clamping jaw 21 and a sub-driving mechanism for driving the third clamping jaw 21 to move, and the other clamping component includes the fourth clamping jaw 22 and a sub-driving mechanism for driving the fourth clamping jaw 22 to move.

[0040] Taking one of the clamping jaw mechanisms as an example, the sub-driving mechanisms of its various clamping jaw assemblies are described.

[0041] In a clamping assembly of the clamping mechanism, the sub-driving mechanism for driving the first clamping jaw 11 to move includes a transverse movement mechanism and a longitudinal movement mechanism. The transverse movement mechanism is used to drive the first clamping jaw 11 to move along the traction direction of the welding strip 4, and the longitudinal movement mechanism is used to drive the first clamping jaw 11 to move in a direction perpendicular to the traction direction.

[0042] Furthermore, the fixed end of the transverse movement mechanism is fixed to the clamping jaw frame of the clamping jaw mechanism, the fixed end of the longitudinal movement mechanism is connected to the driving end of the transverse movement mechanism, and the first clamping jaw 11 is installed at the driving end of the longitudinal movement mechanism. In this way, the longitudinal movement mechanism can drive the first clamping jaw 11 to move in a direction perpendicular to the welding strip pulling direction, and the transverse movement mechanism drives the longitudinal movement mechanism and the first clamping jaw 11 to move back and forth along the welding strip pulling direction.

[0043] In another clamping jaw assembly of the clamping jaw mechanism, the sub-drive mechanism driving the second clamping jaw 12 to move only includes a longitudinal movement mechanism, and the fixed end of the longitudinal movement mechanism is fixed to the clamping jaw frame of the clamping jaw mechanism, that is, the second clamping jaw 12 can only move relative to the clamping jaw frame in a direction perpendicular to the pulling direction of the welding strip. When the second clamping jaw 12 clamps the welding strip 4 and pulls the welding strip, the clamping jaw frame is driven to move by the total drive mechanism of the clamping jaw mechanism, so that the clamping jaw assembly as a whole moves in the pulling direction.

[0044] Preferably, the longitudinal movement mechanism of the first clamping jaw 11 and the second clamping jaw 12 drives the clamping jaws to move up and down in the vertical direction. Of course, the longitudinal movement mechanism can also drive the clamping jaws to move in other directions perpendicular to the welding strip pulling direction.

[0045] Preferably, the overall driving mechanism is configured to drive the clamping jaw frame to move along the pulling direction of the welding strip 4 .

[0046] When the clamp mechanism is working, Figure 1-Figure 4 As shown, the main driving mechanism first drives the clamping jaw frame and the two clamping jaw assemblies on the clamping jaw frame to move to the position of clamping the welding strip 4, the longitudinal movement mechanism of the first clamping jaw 11 drives the first clamping jaw 11 to descend to the welding strip clamping position, clamps the welding strip 4 and is driven by the transverse movement mechanism to pull the welding strip to move, when the first clamping jaw 11 is driven by the transverse movement mechanism to move to the preset position, the cutter mechanism cuts the welding strip, and then the second clamping jaw 12 is driven by the longitudinal movement mechanism to descend to the welding strip clamping position, clamps the welding strip 4, and then the main driving mechanism drives the clamping jaw frame of the clamping jaw mechanism to move transversely, so that after the two clamping jaw assemblies move transversely as a whole for a preset distance, the cutter mechanism cuts off the welding strip clamped by the second clamping jaw 12, and then the main driving mechanism continues to drive the clamping jaw frame to move to the welding strip placing position, and the two clamping jaws place the welding strips in turn, and then the longitudinal movement mechanism drives their respective clamping jaws to rise.

[0047] In this embodiment, the second jaw 12 drives the jaw frame through the main driving mechanism, thereby driving the two jaw assemblies to move laterally as a whole to pull the welding strip. It can be understood by those skilled in the art that the sub-driving mechanism of the second jaw 12 can also drive the second jaw 12 to move laterally and longitudinally in a similar manner to the first jaw 11, through independently arranged transverse and longitudinal mechanisms.

[0048] Figure 1-Figure 4 In the embodiment shown, the two clamping mechanisms are configured to be identical. After each clamping assembly in the first clamping mechanism clamps the solder strip 4 and pulls the solder strip, the second clamping mechanism drives each clamping assembly to clamp the solder strip and pull the solder strip in the same manner as the first clamping mechanism. It can be understood by those skilled in the art that, of course, each clamping mechanism can also be configured to be different, as long as each of the clamping assemblies of each clamping mechanism can clamp the solder strip and pull the solder strip to a preset position.

[0049] The solder strip processing device provided by the present invention preferably comprises two said clamping jaw mechanisms, at least two clamping jaw assemblies of each clamping jaw mechanism are configured to clamp the solder strip in sequence and pull the solder strip, and the two said clamping jaw mechanisms clamp the solder strip and pull the solder strip alternately and cyclically through their respective clamping jaw assemblies;

[0050] The two clamping jaw mechanisms are respectively arranged at two opposite sides of the welding strip in the pulling state; or, the two clamping jaw mechanisms are arranged at the same side of the welding strip in the pulling state.

[0051] like Figure 1-Figure 4In the illustrated embodiment, the first clamping mechanism of the solder strip processing device uses two clamping assemblies to successively reach the position of clamping the solder strip, clamp and pull the solder strip to a preset position, and then is cut off by a cutter mechanism. The two clamping assemblies of the other clamping mechanism then successively reach the position of clamping the solder strip, clamp and pull the solder strip to a preset position, and then is cut off by a cutter mechanism. The two clamping mechanisms work alternately and cyclically, which greatly improves the efficiency of providing the solder strip.

[0052] It should be understood that the two clamping mechanisms are not limited to the alternating cycle working mode, and can also be set to a mode in which the two clamping mechanisms take over the working mode, that is, the various clamping assemblies of the first clamping mechanism successively clamp and pull the welding tape to the preset position, and then the cutting mechanism cuts it and places it on the transfer platform, and then the various clamping assemblies of the second clamping mechanism successively clamp the cut welding tape from the transfer platform and move it to the welding tape placement position.

[0053] exist Figure 1-Figure 4 In the illustrated embodiment, the two clamping jaw mechanisms are arranged on the same side of the welding ribbon in the pulling state.

[0054] In another embodiment, two clamping jaws may be provided, respectively disposed on opposite sides of the welding strip in the pulling state. Figure 5 As shown, the first clamping mechanism (including a first clamping assembly having a first clamping jaw 11 and a second clamping assembly having a second clamping jaw 12) and the second clamping mechanism (including a third clamping assembly having a third clamping jaw 21 and a fourth clamping assembly having a fourth clamping jaw 22) are arranged to be respectively located on opposite sides of a welding strip (not shown) in a traction state.

[0055] In addition, in the solder strip processing device provided by the present invention, the cutting mechanism includes a solder strip holding component (not shown in the figure) for positioning the solder strip and two cutting knives arranged opposite to each other near the solder strip holding component, and the two cutting knives arranged opposite to each other are as follows: Figure 1-Figure 4 The first cutter 31 and the second cutter 32 are shown in FIG. The solder strip holding component is used to clamp and position the solder strip. At the same time, a driving mechanism is also provided on the solder strip holding component to feed the solder strip to a position to be clamped so as to facilitate the clamping of the clamp.

[0056] Next, according to Figure 1-Figure 4 The specific working process of the welding strip processing device provided by the present invention is described.

[0057] like Figure 1As shown, after the total driving mechanism of the first clamping jaw mechanism (including a first clamping jaw assembly with a first clamping jaw 11 and a second clamping jaw assembly with a second clamping jaw 12) drives the two clamping jaw assemblies as a whole to above the position of clamping the welding strip, the longitudinal movement mechanism of the first clamping jaw assembly drives the first clamping jaw 11 to descend to the position of clamping the welding strip, clamps the welding strip 4 and is driven by the transverse movement mechanism to pull the welding strip to move;

[0058] like Figure 2 As shown, the first clamping jaw 11 is driven by the transverse movement mechanism to move to the preset position, the cutter mechanism cuts off the welding strip 4, and then the second clamping jaw 12 is driven by the longitudinal movement mechanism to drop to the welding strip clamping position to clamp the welding strip 4; at this time, the total driving mechanism of the second clamping jaw mechanism (including the third clamping jaw assembly with the third clamping jaw 21 and the fourth clamping jaw assembly with the fourth clamping jaw 22) drives the third clamping jaw assembly and the fourth clamping jaw assembly to move above the welding strip clamping position;

[0059] like Figure 3 As shown, the main driving mechanism of the first clamping jaw mechanism drives the clamping jaw frame of the clamping jaw mechanism to move horizontally, so that the first clamping jaw assembly and the second clamping jaw assembly move horizontally by a preset distance as a whole, that is, the welding strip 4 clamped by the second clamping jaw 12 moves to a preset position, and the cutting mechanism cuts off the welding strip clamped by the second clamping jaw 12; then, the longitudinal movement mechanism of the third clamping jaw assembly drives the third clamping jaw 21 to descend to the welding strip clamping position;

[0060] like Figure 4 As shown, the main driving mechanism of the first clamping jaw mechanism drives the first clamping jaw assembly and the second clamping jaw assembly to move as a whole to the position of placing the welding strip, and the first clamping jaw 11 rises after placing the welding strip;

[0061] After the second clamp 12 has placed the soldering ribbon and risen into place, the main driving mechanism of the first clamp mechanism drives the two clamp assemblies back to the soldering ribbon clamping position to carry out the next round of circulation work. The working process of the second clamp mechanism is the same as that of the first clamp mechanism. After clamping the soldering ribbon, pulling the soldering ribbon and placing the soldering ribbon, it returns to the soldering ribbon clamping position to carry out the next round of circulation work.

[0062] According to another aspect of the present invention, there is also provided a battery cell string welding device, the battery cell string welding device comprising a welding conveying device, a welding device, a battery cell feeding device and the welding ribbon processing device as described above;

[0063] The cell feeding device provides cell cells to the welding conveyor device, and the solder strip processing device pulls and cuts the solder strip and lays the solder strip on the welding conveyor device (i.e., the sub-driving mechanisms of each clamping mechanism drive the clamping jaws to clamp the solder strip and pull the solder strip, and then the solder strip cut by the cutting mechanism is placed on the solder strip conveyor device), so that the cell cells and the solder strip are stacked on the welding conveyor device, and the welding conveyor device conveys the stacked cell cells and solder strips to the welding station, and the welding device welds the cell cells and solder strips located at the welding station to form a cell string.

[0064] in, Figure 5 The schematic diagram shows the structure of the cooperation between the welding strip processing device 6 and the welding conveying device 5 in the battery cell string welding equipment.

[0065] Since the solder strip processing device provided by the present invention processes the solder strip through at least two clamping mechanisms (each clamping mechanism includes at least two clamping assemblies for clamping and pulling the solder strip), the solder strip processing efficiency is high and can keep up with the rhythm of battery cell transportation, which greatly improves the laying efficiency of battery cells and solder strips, thereby improving the efficiency of battery string production by string welding equipment.

[0066] Those skilled in the art should understand that the specific structures and processes shown in the above specific embodiments are only exemplary and not restrictive. Moreover, those skilled in the art can combine the various technical features shown above in various possible ways to form new technical solutions, or make other changes, which are all within the scope of the present invention.

Claims

1. A welding strip processing device, characterized in that: The welding strip processing device comprises at least two clamping jaw mechanisms for pulling the welding strip and a cutting knife mechanism for cutting the welding strip after the welding strip is pulled; Each of the clamping mechanisms comprises a clamping frame, a main driving mechanism for driving the clamping frame to move, and at least two clamping assemblies mounted on the clamping frame, wherein each of the clamping assemblies comprises a clamping jaw for clamping the welding strip and a sub-driving mechanism for driving the clamping jaw to move relative to the clamping jaw frame to pull the welding strip; The sub-drive mechanism of at least one of the clamping jaw assemblies in each of the clamping jaw mechanisms comprises a transverse movement mechanism and a longitudinal movement mechanism, wherein the transverse movement mechanism is used to drive the clamping jaw to move along the pulling direction of the welding strip, and the longitudinal movement mechanism is used to drive the clamping jaw to move in a direction perpendicular to the pulling direction; the sub-drive mechanism of at least one of the clamping jaw assemblies in each of the clamping jaw mechanisms comprises a longitudinal movement mechanism for driving the clamping jaw to move in a direction perpendicular to the pulling direction of the welding strip; The main driving mechanism is configured to drive the clamping jaw frame to move along the pulling direction of the welding strip; The solder strip processing device comprises two clamping jaw mechanisms, at least two clamping jaw assemblies of each clamping jaw mechanism are configured to sequentially clamp the solder strip and pull the solder strip, and the two clamping jaw mechanisms alternately and cyclically clamp the solder strip and pull the solder strip through their respective clamping jaw assemblies; The two clamping jaw mechanisms are respectively arranged at two opposite sides of the welding strip in the pulling state; or, the two clamping jaw mechanisms are arranged at the same side of the welding strip in the pulling state.

2. The welding strip processing device according to claim 1, characterized in that: The fixed end of the transverse movement mechanism is fixed on the clamping claw frame, the fixed end of the longitudinal movement mechanism is connected to the driving end of the transverse movement mechanism, and the clamping claw is installed on the driving end of the longitudinal movement mechanism.

3. The welding strip processing device according to claim 2, characterized in that: The longitudinal movement mechanism is configured to drive the clamping jaw to move up and down in a vertical direction.

4. The welding strip processing device according to claim 1, characterized in that: The structure of each clamping jaw mechanism is the same.

5. The welding strip processing device according to any one of claims 1 to 4, characterized in that: The cutter mechanism comprises a welding strip holding component for positioning the welding strip and two oppositely arranged cutters close to the welding strip holding component.

6. A battery cell string welding device, characterized in that: The battery cell string welding equipment comprises a welding conveying device, a welding device, a battery cell feeding device and a welding strip processing device according to any one of claims 1 to 5; The battery cell feeding device provides battery cells to the welding conveyor device, the solder strip processing device pulls and cuts the solder strip and lays the solder strip on the welding conveyor device, so that the battery cells and the solder strip are stacked on the welding conveyor device, the welding conveyor device transports the stacked battery cells and solder strips to the welding station, and the welding device welds the battery cells and solder strips located at the welding station to form a battery string.

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