Solder strip pressing needle jig and series welding machine
The welding needle fixture with alternating pressure needles addresses the issue of wafer cracking by stabilizing wire attachment, enhancing production yield and reducing costs through efficient pressure distribution.
Patent Information
- Application Number
- CN202422123324.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The existing welding tape pressing needle fixtures can easily lead to hidden cracks or fragmentation when pressing welding tape on thin battery cells, affecting production yield.
A welding tape pressing needle fixture is designed, which includes a horizontal pressure needle set composed of multiple short-pressure needles and long-pressure needles. The long-pressure needle is pre-pressed to reduce deformation, the short-pressure needle is then pressed, and the elastic parts provide buffering, and the pressing needle is arranged interlaced to reduce the number.
It effectively avoids the hidden cracks or fragmentation problems of thin battery cells, improves the welding effect, and saves production costs.
Smart Images
Figure CN223098392U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic cell accessories, and in particular, to a soldering ribbon pressing needle fixture and a string welding machine. Background Art
[0002] In recent years, with the continuous increase in the price of silicon materials used in photovoltaics, reducing the consumption of silicon materials is one of the important means to reduce costs in the photovoltaic industry. And thinning the thickness of photovoltaic cells is an inevitable direction for cost reduction of silicon materials, which has gradually become the consensus in the photovoltaic industry. As the thickness of photovoltaic cells becomes thinner and thinner, if the existing pressing needle fixture is used to place on the thin cells and press the soldering ribbon, the pressing needles will cause the thin cells to have hidden cracks or be broken, resulting in a reduction in the production yield of the cells. Therefore, a soldering ribbon pressing needle fixture and a string welding machine are provided to solve the above problems. Summary of the Utility Model
[0003] One of the purposes of the utility model is to provide a soldering ribbon pressing needle fixture and a string welding machine to facilitate solving the problem that the existing soldering ribbon pressing needle fixture is likely to cause hidden cracks or breakage of thin cells.
[0004] A soldering ribbon pressing needle fixture and a string welding machine of the utility model can be realized by the following technical solutions:
[0005] A soldering ribbon pressing needle fixture of the utility model includes a fixture main body, on which a plurality of receiving grooves and a plurality of through holes are respectively penetrated; a plurality of counterweight blocks, which are respectively fixedly arranged on opposite sides of the fixture main body; a pressing needle assembly, which is movably penetrated through the fixture main body; and a plurality of anti-slip pads, which are respectively fixedly arranged on the fixture main body.
[0006] Among them, the pressing needle assembly includes a plurality of horizontally arranged pressing needle groups arranged in parallel, and the plurality of horizontally arranged pressing needle groups are respectively movably arranged on the fixture main body, and each horizontally arranged pressing needle group is arranged along the short side direction of the fixture main body; the horizontally arranged pressing needle group includes a plurality of short pressing needles and a plurality of long pressing needles arranged on the same straight line, and the plurality of long pressing needles are not arranged at the head and tail of the queue; the plurality of short pressing needles and the plurality of long pressing needles are respectively movably penetrated through the corresponding receiving grooves.
[0007] Among them, both the short pressing needle and the long pressing needle include a pressing needle main body and an elastic member; the pressing needle main body is of a hollow structure, which is movably penetrated through the corresponding receiving groove and can move longitudinally relative to the fixture main body; the elastic member is movably penetrated through the pressing needle main body, and its two ends are respectively in contact connection with the pressing needle main body and the inner wall of the receiving groove; a plurality of anti-slip members are arranged on the side of the pressing needle main body opposite to the soldering ribbon.
[0008] In one embodiment, the two long pressing needles are respectively arranged at the third position at the head end and the fourth position at the tail end of the horizontal row of pressing needles.
[0009] In one embodiment, the two long pressing needles are respectively arranged at the fourth position at the head end and the third position at the tail end of the horizontal row of pressing needles.
[0010] In one embodiment, the length of the long pressing needle is 2-4 mm longer than that of the short pressing needle.
[0011] In one embodiment, when the solder tape pressing needle fixture is applied to a string welding machine, the pressing needle assembly is distributed in a matrix.
[0012] In one embodiment, when the solder tape pressing needle fixture is applied to a series machine, the short pressing needles on the first and last columns arranged along the long side direction of the fixture body are arranged on the same straight line, and the short pressing needles and long pressing needles on other columns are arranged in a staggered manner.
[0013] In one embodiment, when the solder tape pressing needle fixture is placed on multiple solder tapes on the same plane, the elastic forces of the long pressing needle and the short pressing needle are substantially equal.
[0014] A string welding machine of the present utility model includes a fixture conveying device, and the fixture conveying device performs a conveying operation on the above-mentioned solder tape pressing needle fixture;
[0015] It further includes a cell conveying device, a solder tape feeding device, a cell fixture handling device, a solder tape laying device, a cell-solder tape transmission device, a welding device, a fixture handling device, and an out-string device;
[0016] Among them, the cell conveying device conveys the cells required for cell string welding; the solder tape feeding device places a solder tape roll to provide the solder tape required for cell string welding; the cell fixture handling device transports the cells at the output end of the cell conveying device and the solder tape pressing needle fixture at the output end of the fixture conveying device to the input end of the cell-solder tape transmission device; the solder tape laying device lays the solder tape on the cells on the cell-solder tape transmission device; the cell-solder tape transmission device transports the cells, the solder tape, and the solder tape pressing needle fixture pressing on the solder tape together and passes through the welding device; the welding device is arranged between the input end and the output end of the cell-solder tape transmission device, and it welds the cells and the solder tape on the cell-solder tape transmission device; the fixture handling device transports the solder tape pressing needle fixture from the output end of the cell-solder tape transmission device to the input end of the fixture conveying device; the fixture conveying device transports the returned solder tape pressing needle fixture from the input end of the fixture conveying device to its output end; the out-string device performs a string separation process on the cell string obtained by welding by the welding device and outputs a cell string of a predetermined length.
[0017] Compared with the prior art, the soldering tape pressing needle fixture and the string soldering machine of the utility model have the following beneficial effects:
[0018] The utility model discloses a welding strip pressing needle fixture and a string welding machine. A plurality of short pressing needles and a plurality of long pressing needles are arranged on the same straight line on a horizontal row of pressing needle groups. The welding strip is pre-pressed by the long pressing needles first, so that the welding strip at the clamping position is not easy to deform when the welding strip is pulled, and the long pressing needles first absorb their own weight for buffering when pressing the welding strip, and then the short pressing needles are pressed on the welding strip, which effectively solves the problem that the existing welding strip pressing needle fixture is prone to cause hidden cracks or broken pieces of thin battery cells, and indirectly saves production costs; at the same time, by staggering the plurality of pressing needles on the pressing needle assembly, the overall number of pressing needles can be reduced to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a three-dimensional structural schematic diagram of a welding strip pressing needle fixture of the utility model;
[0021] Figure 2 yes Figure 1 The exploded structure schematic diagram of a welding strip pressing needle fixture of the utility model is shown;
[0022] Figure 3 yes Figure 1 The schematic diagram of the top view of the structure of a welding strip pressing needle fixture of the utility model is shown;
[0023] Figure 4 yes Figure 1 The utility model is shown in a side view structural schematic diagram of a welding strip pressing needle fixture.
[0024] Markings in the figure: 10, solder strip press needle fixture; 11, fixture body; 111, receiving groove; 112, through hole; 12, counterweight block; 121, concave and convex texture; 13, press needle assembly; 131, short press needle; 132, long press needle; 14, anti-slip pad. DETAILED DESCRIPTION
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Components of the embodiments of the present utility model usually described and shown in the accompanying drawings here can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0027] Please refer to Figures 1-4 As shown, a solder ribbon pressing needle fixture 10 of the present utility model mainly includes a fixture main body 11, two counterweights 12, a pressing needle assembly 13, and a plurality of anti-slip pads 14; the fixture main body 11 is a load-bearing main body; the two counterweights 12 are respectively fixedly arranged on opposite sides of the fixture main body 11, and the fixture transfer manipulator realizes the transfer operation of the solder ribbon pressing needle fixture 10 by sucking or clamping the two counterweights 12; the pressing needle assembly 13 is movably arranged on the fixture main body 11, and the corresponding solder ribbon is pressed onto the battery cell through the pressing needle assembly 13, thereby improving the welding or bonding effect between the solder ribbon and the battery cell; the plurality of anti-slip pads 14 are respectively fixedly arranged on the fixture main body 11, which increases the friction of the solder ribbon pressing needle fixture 10 during movement on the conveyor belt, thereby reducing slipping and damage to the battery cell and the conveyor belt.
[0028] Please refer to Figures 1-4 As shown, in this embodiment, a plurality of receiving grooves 111 are penetrated through the fixture main body 11, and the plurality of receiving grooves 111 respectively penetrate through the fixture main body 11, and the pressing needle assembly 13 movably penetrates through the corresponding receiving grooves 111; a plurality of through holes 112 are also penetrated through the fixture main body 11, facilitating the light emitted by the UV lamp or the infrared lamp to irradiate the battery cell and the solder ribbon through the plurality of through holes 112, so that the solder ribbon is welded or cured on the battery cell; a plurality of fixing holes and a plurality of installation cavities (not shown in the figure) are respectively arranged at both ends of the fixture main body 11, and the two counterweights 12 are respectively fixed at both ends of the fixture main body 11 through the corresponding fixing holes; the plurality of anti-slip pads 14 are respectively fixedly arranged in the corresponding installation cavities (not shown in the figure).
[0029] Please refer to Figures 1-4As shown, in this embodiment, the surface of the counterweight block 12 is provided with concave-convex lines 121, and the concave-convex lines 121 increase the friction between the jig transfer robot and the counterweight block 12 during the handling process, thereby ensuring the stable handling of the solder strip pressing needle jig. In this embodiment, the counterweight block 12 is a washer; in other embodiments, the counterweight block 12 can also be a magnet.
[0030] See also Figure 1 , Figure 2 and Figure 4 As shown, the pressure needle assembly 13 includes a plurality of horizontal pressure needle groups arranged in parallel, and the plurality of horizontal pressure needle groups are movably arranged on the fixture body 11, and each horizontal pressure needle group is arranged along the short side direction of the fixture body 11 and presses on the same welding strip. Specifically, the horizontal pressure needle group includes a plurality of short pressure needles 131 and a plurality of long pressure needles 132, and the plurality of short pressure needles 131 and the plurality of long pressure needles 132 are arranged on the same straight line, and the plurality of long pressure needles 132 are not arranged at the head and tail ends of the queue; in some embodiments, the two long pressure needles 132 are respectively arranged at the third position at the head end and the fourth position at the tail end; in other embodiments, the two long pressure needles 132 are respectively arranged at the fourth position at the head end and the third position at the tail end. Specifically, the short pressing needle 131 and the long pressing needle 132 both include a pressing needle body and an elastic member; the pressing needle body is a hollow structure, which is convenient for enhancing the effect of light curing. The pressing needle body movably passes through the receiving groove 111 and can move longitudinally relative to the jig body 11, and the receiving groove 111 guides and limits the longitudinal movement of the pressing needle body; the elastic member movably passes through the pressing needle body, one end of which is in contact with the pressing needle body, and the other end is in contact with the inner wall of the receiving groove. The elastic member provides a buffering force and a restoring force for the longitudinal movement of the pressing needle body; preferably, the elastic member is a spring. A plurality of anti-slip members are arranged on the side of the pressing needle body relative to the welding strip, and through the action of the plurality of anti-slip members, the pressing needle body does not slide relative to the welding strip when in contact; the anti-slip member can be a striped grid.
[0031] See also Figures 1-4As shown, in this embodiment, the short pressing needle 131 is made of steel; since the long pressing needle 132 has a long stroke and is prone to wear, its material is copper; the length of the long pressing needle 132 is 2-4 mm longer than that of the short pressing needle 131. Preferably, the length of the long pressing needle 132 is 3 mm longer than that of the short pressing needle 131. The long pressing needle 132 in each horizontal row of pressing needle groups pre-presses the welding tape first, so that the welding tape is not easily deformed at the clamping position when pulling the welding tape, and when the long pressing needle 132 presses down the welding tape, it absorbs its own weight for buffering first, and then the short pressing needle 131 presses on the welding tape, effectively solving the problem of hidden cracks or broken pieces of thin battery wafers caused by the previous welding tape pressing needle fixture 10, and indirectly saving the production cost. Specifically, when the welding tape pressing needle fixture 10 is applied to an infrared string welding machine, the pressing needle assembly 13 is distributed in a matrix; when the welding tape pressing needle fixture 10 is applied to an adhesive series connection machine, the short pressing needles 131 in the first and last columns arranged along the long side direction of the fixture main body 11 are arranged on the same straight line, and the short pressing needles 132 and long pressing needles 132 in other columns are arranged in a staggered manner, that is, not on the same straight line. Such a design can reduce the overall number of pressing needles on the basis of protecting the pressing effect; when the welding tape pressing needle fixture 10 is placed on multiple welding tapes on the same plane, the elastic forces of the long pressing needle 132 and the short pressing needle 131 are roughly equal, and a certain range of error is allowed for the magnitudes of their elastic forces.
[0032] Please refer to Figure 1 and Figure 2 As shown, a plurality of anti-slip pads 14 are respectively and fixedly arranged in corresponding installation cavities (not shown in the figure); specifically, a plurality of grid patterns are arranged on the outer surface of the anti-slip pad 14, and the friction force of the welding tape pressing needle fixture 10 during movement on the conveyor belt is increased through the plurality of grid patterns, thereby reducing slipping and damage to the battery wafers and the conveyor belt.
[0033] A string welding machine of the present utility model includes a fixture conveying device, which performs a conveying operation on the welding tape pressing needle fixture 10 of any one of the above.
[0034] It further includes a battery wafer conveying device, a welding tape feeding device, a battery wafer fixture handling device, a welding tape laying device, a battery wafer welding tape transmission device, a welding device, a fixture handling device, and an out-string device;
[0035] Among them, the cell conveying device conveys the cells required for the welding of the cell string; the solder tape feeding device places the solder tape reel to provide the solder tape required for the welding of the cell string; the cell fixture handling device transports the cells at the output end of the cell conveying device and the solder tape pressing needle fixture 10 at the output end of the fixture conveying device to the input end of the cell-solder tape transmission device; the solder tape laying device lays the solder tape on the cells on the cell-solder tape transmission device; the cell-solder tape transmission device conveys the cells, the solder tape, and the solder tape pressing needle fixture 10 pressed on the solder tape together and passes them through the welding device; the welding device is arranged between the input end and the output end of the cell-solder tape transmission device, and it welds the cells and the solder tape on the cell-solder tape transmission device; the fixture handling device transports the solder tape pressing needle fixture 10 from the output end of the cell-solder tape transmission device to the input end of the fixture conveying device; the fixture conveying device transports the returned solder tape pressing needle fixture 10 from the input end of the fixture conveying device to its output end; the string discharging device performs string separation processing on the cell string obtained by the welding device and outputs the cell string of a predetermined length.
[0036] It should be noted that the specific working process of a solder tape pressing needle fixture and a string welding machine of the present invention is as follows: the fixture transfer manipulator sucks or clamps two counterweights 12 to transfer the solder tape pressing needle fixture 10 to the solder tape arranged on the cell-solder tape transmission device. Then, under the action of the self-weight of the fixture main body 11 and the magnetic attraction of the counterweights 12, the long pressing needles 132 in each horizontal row pressing needle group first pre-press the solder tape, so that the solder tape at the clamping position is not easily deformed when pulling the solder tape, and when the long pressing needles 132 press down the solder tape, they first absorb the buffer of their own weight, and then the short pressing needles 131 press on the solder tape, effectively solving the problem of the thin cell cracking or fragmenting caused by the previous solder tape pressing needle fixture 10, and indirectly saving the production cost.
[0037] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.
[0038] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.
Claims
1. A solder tape pressing needle fixture, characterized in that, Including: A jig body, on which a plurality of receiving grooves and a plurality of through holes are respectively penetrated; A plurality of counterweight blocks, which are respectively fixedly arranged on opposite sides of the jig body; A needle pressing assembly, which is movably penetrated through the jig body; A plurality of anti-slip pads, which are respectively fixedly arranged on the jig body; Wherein, the needle pressing assembly includes a plurality of horizontally arranged needle pressing groups arranged in parallel, and the plurality of horizontally arranged needle pressing groups are respectively movably arranged on the jig body, and each of the horizontally arranged needle pressing groups is arranged along the short side direction of the jig body; the horizontally arranged needle pressing group includes a plurality of short needle presses and a plurality of long needle presses arranged in the same straight line, and the plurality of long needle presses are not arranged at the head and tail ends of the queue; the plurality of short needle presses and the plurality of long needle presses are respectively movably penetrated through the corresponding receiving grooves; Wherein, both the short needle press and the long needle press include a needle pressing main body and an elastic member; the needle pressing main body is a hollow structure, which is movably penetrated through the corresponding receiving groove and can move longitudinally relative to the jig body; the elastic member is movably penetrated through the needle pressing main body, and its two ends are respectively in contact connection with the needle pressing main body and the inner wall of the receiving groove; a plurality of anti-slip members are arranged on the side of the needle pressing main body opposite to the solder tape.
2. The solder ribbon pressing needle fixture according to claim 1, wherein Two of the long needle presses are respectively arranged at the third position from the head and the fourth position from the tail of the horizontally arranged needle pressing group.
3. A solder tape pressing needle fixture according to claim 1, characterized in that, Two of the long needle presses are respectively arranged at the fourth position from the head and the third position from the tail of the horizontally arranged needle pressing group.
4. A soldering tape pressing needle fixture according to claim 1, characterized in that The length of the long needle press is 2-4 mm longer than the length of the short needle press.
5. The solder strip pressing needle fixture according to claim 1, wherein The needle pressing assembly is distributed in a matrix.
6. The solder strip pressing pin fixture according to claim 1, wherein, The short needle presses on the first column and the last column arranged along the long side direction of the jig body are arranged in the same straight line, and the short needle presses and the long needle presses on other columns are arranged in a staggered manner.
7. A solder ribbon pressing needle fixture according to claim 1, wherein, When the solder tape needle pressing jig is placed on multiple solder tapes on the same plane, the elastic forces of the long needle press and the short needle press are substantially equal.
8. A string welding machine, characterized in that, Including a jig conveying device, which performs a conveying operation on the solder tape needle pressing jig according to any one of claims 1-7; It further includes a battery cell conveying device, a solder tape feeding device, a battery cell jig handling device, a solder tape laying device, a battery cell solder tape transmission device, a welding device, a jig handling device and a string discharging device; Among them, the cell conveying device conveys the cells required for the welding of the cell string; the solder tape feeding device places the solder tape roll to provide the solder tape required for the welding of the cell string; the cell jig handling device transports the cells at the output end of the cell conveying device and the solder tape pressing needle jig at the output end of the jig conveying device to the input end of the cell-solder tape transmission device; the solder tape laying device lays the solder tape on the cells on the cell-solder tape transmission device; the cell-solder tape transmission device conveys the cells, the solder tape, and the solder tape pressing needle jig pressing on the solder tape together and passes through the welding device; the welding device is arranged between the input end and the output end of the cell-solder tape transmission device, and it welds the cells and the solder tape on the cell-solder tape transmission device; the jig handling device transports the solder tape pressing needle jig from the output end of the cell-solder tape transmission device to the input end of the jig conveying device; the jig conveying device conveys the returned solder tape pressing needle jig from the input end of the jig conveying device to its output end; the string output device performs string separation processing on the cell string obtained by the welding of the welding device and outputs a cell string of a predetermined length.