Solder strip fixing device and solder strip conveying equipment

Abstract

The utility model discloses a welding strip fixing device and welding strip conveying equipment. The welding strip fixing device comprises a first magnetic conductive sheet and a second magnetic conductive sheet which are movably arranged on the two opposite sides of the welding strip guide groove respectively, and a control coil which is located outside the welding strip guide groove and fixedly arranged at the bottom of the welding strip guide groove. The first elastic piece is arranged between the first magnetic conductive sheet and the first side of the welding strip guide groove; the second elastic piece is arranged between the second magnetic conductive sheet and the second side of the welding strip guide groove; when the control coil is powered on, the first magnetic conductive sheet and the second magnetic conductive sheet get close to each other under the action of the magnetic force of the control coil until the welding strip is fixed. When the control coil is powered off, the first magnetic conductive sheet resets by means of the elastic force of the first elastic piece, and the second magnetic conductive sheet resets by means of the elastic force of the second elastic piece. According to the utility model, the first magnetic conductive sheet and the second magnetic conductive sheet are driven by the control coil to fix the solder strip, so that the solder strip does not stand laterally when being transported after being cut off, pseudo soldering of a battery piece is avoided, and the production yield of a photovoltaic battery assembly is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of welding strip conveying equipment, and in particular to a welding strip fixing device and welding strip conveying equipment. Background Technology

[0002] The solder ribbon in photovoltaic (PV) modules serves as the current transmission medium between the cells, undertaking the dual functions of current transmission between cell strings and mechanical support. In the production process of PV modules, the precise welding of the cells and solder ribbon is a crucial condition for achieving efficient conversion of solar energy into electrical energy. Currently, welding processes are commonly used to connect diced cells into strings, the core of which lies in ensuring that the flat solder ribbon (flattened portion), only 0.2mm thick, precisely adheres to the main grid lines of the cells. However, systemic process defects exist in actual production. For example, before the cut solder ribbon is transported to the welding station, due to a lack of effective fixation, the solder ribbon is prone to lateral displacement or standing upright under mechanical vibration and inertia. This phenomenon can cause the solder ribbon to deviate from the main grid lines, resulting in incomplete soldering of the cells and severely affecting the production yield of PV modules.

[0003] Therefore, how to design a solder ribbon fixing device to ensure zero-gap contact between the solder ribbon and the main bus line in order to improve the production yield of photovoltaic cell modules has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a welding strip fixing device and a welding strip conveying equipment. When the control coil is energized, the magnetic force generated attracts the first and second magnetic conductive sheets in the welding strip guide groove to gather together to fix the welding strip, thereby fundamentally solving the problem of unstable welding strip fixing.

[0005] To achieve the above objectives, this utility model provides a welding strip fixing device for a welding strip guide groove, the welding strip guide groove including a first side plate and a second side plate symmetrically arranged; comprising:

[0006] The first magnetic conductive sheet and the second magnetic conductive sheet are respectively movably disposed on the first side plate and the second side plate;

[0007] A control coil located outside the welding strip guide groove and fixed at the bottom of the welding strip guide groove;

[0008] A first elastic element is disposed between the first magnetic conductive sheet and the first side plate;

[0009] A second elastic element is disposed between the second magnetic conductive sheet and the second side plate;

[0010] When the control coil is energized, the first and second magnetic sheets move closer together under the magnetic force of the control coil until the solder strip is fixed.

[0011] When the control coil is de-energized, the first magnetic sheet is reset by the elastic force of the first elastic element, and the second magnetic sheet is reset by the elastic force of the second elastic element, thus separating the first and second magnetic sheets.

[0012] In some embodiments, a rotating sleeve is integrally formed on the end of the first magnetic sheet and the second magnetic sheet facing the welding strip guide groove; the bottom of the welding strip guide groove is formed with a first edge and a second edge that are parallel to each other, and both the first edge and the second edge are provided with a rotating shaft, which is rotatably engaged with the rotating sleeve.

[0013] In some embodiments, the first magnetic sheet and the second magnetic sheet are symmetrically disposed in the welding strip guide groove.

[0014] In some embodiments, both the first magnetic sheet and the second magnetic sheet are arc structures that bulge away from the solder strip guide groove, and the curvature of the first magnetic sheet and the second magnetic sheet is equal.

[0015] In some embodiments, both the first magnetic sheet and the second magnetic sheet have an abutment surface at the end away from the solder strip guide groove, and the abutment surface matches the outer surface of the solder strip.

[0016] In some embodiments, the length of the control coil is equal to the width of the solder strip guide groove; the lengths of the first magnetic sheet and the second magnetic sheet are both equal to the length of the control coil.

[0017] In some embodiments, the first elastic member and the second elastic member are arranged symmetrically about the center plane of the welding strip guide groove.

[0018] In some embodiments, the cross-section of the welding strip guide groove is an isosceles trapezoid;

[0019] The first side plate is fixedly provided with a first connecting ear, and the side of the first magnetic sheet away from the welding strip guide groove is fixedly provided with a first mating ear. The hooks at both ends of the first elastic member are respectively connected to the first connecting ear and the first mating ear.

[0020] The second side plate is fixed with a second connecting ear, and the side of the second magnetic sheet away from the welding strip guide groove is fixed with a second mating ear. The hooks at both ends of the second elastic member are respectively connected to the second connecting ear and the second mating ear.

[0021] In some embodiments, it also includes:

[0022] A position sensor used to detect the position of the solder strip within the solder strip guide groove;

[0023] An electrically controlled switch connected to a control coil;

[0024] A controller connected to a position sensor and an electronic switch, respectively;

[0025] When the position sensor detects that the solder strip has reached the preset position, the controller controls the electronic switch to close based on the signal fed back by the position sensor, so as to energize the control coil.

[0026] This utility model also provides a welding strip conveying device, including a welding strip guide groove and the above-mentioned welding strip fixing device, wherein the welding strip fixing device is disposed in the welding strip guide groove.

[0027] Compared to the prior art, this utility model designs a welding strip fixing device. Based on the principle of electromagnetic induction, when the control coil is energized, it generates a magnetic force. The first and second magnetic conductive sheets are respectively movably disposed on the first and second side plates of the welding strip guide groove. Under the action of the magnetic force, both the first and second magnetic conductive sheets rotate towards the bottom of the welding strip guide groove to bring them closer together until the first and second magnetic conductive sheets fix the welding strip. At the same time, the first and second elastic elements are stretched. When the control coil is de-energized, the magnetic force of the control coil disappears, and the first and second elastic elements recover their elastic deformation. The first magnetic conductive sheet returns to its original position by the elastic force of the first elastic element, and the second magnetic conductive sheet returns to its original position by the elastic force of the second elastic element. The first and second magnetic conductive sheets separate from each other, avoiding interference with the normal transport of the welding strip in the welding strip guide groove.

[0028] This invention features a first magnetic sheet and a second magnetic sheet movably disposed on the first and second side plates of the welding strip guide groove. When the control coil is energized, the first and second magnetic sheets close and fix the welding strip, ensuring that the welding strip does not stand upright during transportation after cutting, reducing the risk of poor soldering of the battery cells, and effectively improving the production yield of photovoltaic cell modules. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the welding strip fixing device provided in an embodiment of the present utility model.

[0031] The attached figures are labeled as follows:

[0032] 1. Welding strip guide groove; 2. First magnetic conductive sheet; 3. Second magnetic conductive sheet; 4. Control coil; 5. First elastic element; 6. Second elastic element; 7. Rotating sleeve; and 8. Rotating shaft.

[0033] First edge 11, second edge 12, first side plate 13 and second side plate 14;

[0034] First connecting ear 131;

[0035] Second connecting ear 141. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] This utility model discloses a welding strip fixing device, as shown in the attached figure. Figure 1 As shown, a welding strip guide 1 is used to transport welding strip. The welding strip guide 1 includes a first side plate 13 and a second side plate 14 arranged symmetrically.

[0039] The welding strip fixing device includes a first magnetic sheet 2, a second magnetic sheet 3, a control coil 4, a first elastic element 5, and a second elastic element 6. The first magnetic sheet 2 and the second magnetic sheet 3 are movably mounted on the first side plate 13 and the second side plate 14, respectively. Both the first magnetic sheet 2 and the second magnetic sheet 3 are magnetic media, specifically iron sheets. The control coil 4 is located outside the welding strip guide groove 1 and is fixed to the bottom of the welding strip guide groove 1. The first elastic element 5 is located between the first magnetic sheet 2 and the first side plate 13, and the second elastic element 6 is located between the second magnetic sheet 3 and the second side plate 14. Both the first elastic element 5 and the second elastic element 6 can be cylindrical springs.

[0040] When the control coil 4 is energized, according to the principle of magnetic induction, the control coil 4 generates magnetic force. Under the action of magnetic force, the first magnetic sheet 2 and the second magnetic sheet 3 both rotate toward the bottom of the welding strip guide groove 1. The first magnetic sheet 2 and the second magnetic sheet 3 move closer to each other until the first magnetic sheet 2 and the second magnetic sheet 3 fix the welding strip. During the rotation process of the first magnetic sheet 2 and the second magnetic sheet 3, the first elastic element 5 and the second elastic element 6 are stretched.

[0041] When the control coil 4 is de-energized, the magnetic force of the control coil 4 disappears, the first elastic element 5 and the second elastic element 6 resume their elastic deformation, the first magnetic sheet 2 returns to its original position by the elastic force of the first elastic element 5, and the second magnetic sheet 3 returns to its original position by the elastic force of the second elastic element 6. Both the first magnetic sheet 2 and the second magnetic sheet 3 rotate away from the welding strip guide groove 1, and the first magnetic sheet 2 and the second magnetic sheet 3 separate from each other, ensuring that the welding strip guide groove 1 is unobstructed and avoiding the first magnetic sheet 2 and the second magnetic sheet 3 from affecting the normal transport of the welding strip in the welding strip guide groove 1.

[0042] In summary, the present invention has a first magnetic sheet 2 and a second magnetic sheet 3 movably arranged on the first side plate 13 and the second side plate 14 of the welding strip guide groove 1, respectively. When the control coil 4 is energized, the first magnetic sheet 2 and the second magnetic sheet 3 close and fix the welding strip, ensuring that the welding strip does not stand upright during the transportation process after cutting, reducing the risk of poor welding of the battery cells, and effectively improving the production yield of photovoltaic cell modules.

[0043] In a preferred embodiment, a rotating sleeve 7 is integrally formed at the end of both the first magnetic sheet 2 and the second magnetic sheet 3 facing the welding strip guide groove 1. The bottom of the welding strip guide groove 1 has a first edge 11 and a second edge 12 that are parallel to each other. Both the first edge 11 and the second edge 12 have a protruding rotating shaft 8. The rotating shaft 8 is rotatably engaged with the rotating sleeve 7, allowing the rotating shaft 8 to support the rotation of the first magnetic sheet 2 and the second magnetic sheet 3 relative to the welding strip guide groove 1. It should be noted that the protruding rotating shaft 8 means that it is positioned away from the inner wall of the welding strip guide groove 1, ensuring that the first magnetic sheet 2 and the second magnetic sheet 3 have a large range of rotation. Specifically, the first edge 11 and the second edge 12 are both inclinedly welded with support columns, and the rotating shaft 8 is vertically welded to the support columns. The rotating sleeve 7 has a clearance groove for avoiding the support columns. Of course, the installation method of the first magnetic sheet 2 and the second magnetic sheet 3 is not limited to this; for example, interchanging the positions of the rotating sleeve 7 and the rotating shaft 8 does not affect the achievement of the purpose of this utility model.

[0044] In a preferred embodiment, the first magnetic sheet 2 and the second magnetic sheet 3 are symmetrically arranged in the solder strip guide groove 1 to ensure that the force applied to the solder strip by the first guide groove sheet and the second magnetic sheet 3 is the same in magnitude and symmetrical in direction. This avoids the solder strip from being unstable due to uneven force applied by the two magnetic sheets, which is beneficial to further improve the production yield.

[0045] In a preferred embodiment, both the first magnetic sheet 2 and the second magnetic sheet 3 are arc-shaped structures that bulge away from the welding strip guide groove 1, and the curvature of the first magnetic sheet 2 and the second magnetic sheet 3 is equal, so as to increase the contact area between the first magnetic sheet 2 and the second magnetic sheet 3 and the welding strip, and ensure that the welding strip is fixed stably.

[0046] In a preferred embodiment, both the first magnetic sheet 2 and the second magnetic sheet 3 have an abutment surface at the end away from the solder strip guide groove 1. The abutment surface matches the outer surface of the solder strip, further increasing the contact area between the first magnetic sheet 2 and the second magnetic sheet 3 and the solder strip, making the solder strip more stably fixed.

[0047] The length of the control coil 4 is equal to the width of the solder strip guide groove 1, and the lengths of the first magnetic sheet 2 and the second magnetic sheet 3 are equal to the length of the control coil 4. This ensures that the control coil 4 has sufficient magnetic force to overcome the elastic forces of the first elastic element 5 and the second elastic element 6, attracting the first magnetic sheet 2 and the second magnetic sheet 3 to rotate simultaneously. This avoids insufficient magnetic force due to the length of the control coil 4 being too short, and also avoids resource waste due to the length of the control coil 4 being too long. It should be noted that, to ensure that the first elastic element 5 and the second elastic element 6 are subjected to uniform force, the central symmetry line of the first magnetic sheet 2 and the second magnetic sheet 3 lies on the central symmetry plane of the control coil 4.

[0048] The first elastic element 5 and the second elastic element 6 are symmetrically arranged with the center plane of the welding strip guide groove 1 as the center. Regardless of whether the first elastic element 5 and the second elastic element 6 are stretched or retracted, they can ensure that the first magnetic sheet 2 and the second magnetic sheet 3 are subjected to the same force. This avoids damage to the welding strip or insecure fixing of the welding strip due to uneven force on the first magnetic sheet 2 and the second magnetic sheet 3, which is conducive to improving the production yield.

[0049] The cross-section of the welding strip guide groove 1 is an isosceles trapezoid. The first side plate 13 and the second side plate 14 are integrally connected by the bottom side plate. The first side plate 13 and the bottom side plate and the second side plate 14 and the bottom side plate are both set at an angle. The first side plate 13 and the second side plate 14 are distributed in an inverted "V" shape.

[0050] The first side plate 13 is fixedly provided with a first connecting ear 131, and the first magnetic sheet 2 is fixedly provided with a first mating ear on the side away from the welding strip guide groove 1. The hooks at both ends of the first elastic member 5 are respectively connected to the first connecting ear 131 and the first mating ear to ensure that the first elastic member 5 is reliably fixed. The second side plate 14 is fixedly provided with a second connecting ear 141, and the second magnetic sheet 3 is fixedly provided with a second mating ear on the side away from the welding strip guide groove 1. The hooks at both ends of the second elastic member 6 are respectively connected to the second connecting ear 141 and the second mating ear to ensure that the second elastic member 6 is reliably fixed.

[0051] The ribbon fixing device also includes a position sensor, an electronic switch, and a controller. The position sensor is used to detect the position of the ribbon within the ribbon guide groove 1. The electronic switch is connected to the control coil 4 and is used to control the on / off state of the circuit containing the control coil 4. The controller is connected to both the position sensor and the electronic switch. The preset position mentioned in this text specifically refers to the position where the ribbon, after being cut, is transported within the ribbon guide groove 1 to a position close to the first magnetic sheet 2 and the second magnetic sheet 3.

[0052] When the position sensor detects that the welding strip has reached the preset position, the position sensor sends a signal to the controller. After processing and calculating, the controller sends a command to the electric control switch to close the electric control switch, so that the control coil 4 is automatically energized. The automation level is high, the human reference is reduced, and it is beneficial to improve production efficiency.

[0053] It should be noted that the controller should include a signal receiving unit, a signal judging unit, and a signal transmitting unit. The signal receiving unit receives electrical signals sent by detection components such as position sensors. The signal judging unit is electrically connected to the signal receiving unit so that it can determine whether the signal received by the signal receiving unit is a trigger signal. The signal transmitting unit is electrically connected to the signal judging unit so that it can send the judgment signal generated by the signal judging unit to the execution components such as electronic switches. The specific arrangement of the signal receiving unit, signal judging unit, and signal transmitting unit can refer to existing technologies; in this utility model, only the application scenario of the above three components has been changed, and no substantial improvement has been made. Obviously, controllers with this structure are widely used in existing automatic control equipment, such as MCUs, DSPs, or microcontrollers. The key point of this utility model is that the controller combines the position sensor and the electronic switch.

[0054] This utility model embodiment also discloses a welding strip conveying device, a welding strip guide groove 1 and the above-mentioned welding strip fixing device. The welding strip fixing device is disposed in the welding strip guide groove 1. The welding strip fixing device reduces the risk of poor welding of battery cells by effectively fixing the welding strip, and can effectively improve the production yield.

[0055] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0056] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A solder strip holding device, characterized by For a welding strip guide groove (1), the welding strip guide groove (1) includes a first side plate (13) and a second side plate (14) arranged symmetrically; including: The first magnetic sheet (2) and the second magnetic sheet (3) are respectively movably disposed on the first side plate (13) and the second side plate (14); A control coil (4) located outside the welding strip guide groove (1) and fixed at the bottom of the welding strip guide groove (1); A first elastic element (5) is disposed between the first magnetic conductive sheet (2) and the first side plate (13); A second elastic element (6) is provided between the second magnetic conductive sheet (3) and the second side plate (14); When the control coil (4) is energized, the first magnetic sheet (2) and the second magnetic sheet (3) move closer to each other under the magnetic force of the control coil (4) until the welding strip is fixed. When the control coil (4) is de-energized, the first magnetic sheet (2) is reset by the elastic force of the first elastic element (5), and the second magnetic sheet (3) is reset by the elastic force of the second elastic element (6), and the first magnetic sheet (2) and the second magnetic sheet (3) are separated from each other.

2. The solder strip securing device of claim 1, wherein Both the first magnetic sheet (2) and the second magnetic sheet (3) have a rotating sleeve (7) integrally formed at one end facing the welding strip guide groove (1); the bottom of the welding strip guide groove (1) has a first edge (11) and a second edge (12) that are parallel to each other, and both the first edge (11) and the second edge (12) have a rotating shaft (8) protruding from them, and the rotating shaft (8) is rotatably engaged with the rotating sleeve (7).

3. The solder strip securing device of claim 1, wherein, The first magnetic conductive sheet (2) and the second magnetic conductive sheet (3) are symmetrically arranged in the welding strip guide groove (1).

4. The solder strip securing device of claim 1, wherein, Both the first magnetic conductive sheet (2) and the second magnetic conductive sheet (3) are arc structures that bulge away from the welding strip guide groove (1), and the arc of the first magnetic conductive sheet (2) and the second magnetic conductive sheet (3) is equal.

5. The solder strip securing device of claim 1, wherein, Both the first magnetic sheet (2) and the second magnetic sheet (3) have an abutting surface at the end away from the welding strip guide groove (1), and the abutting surface matches the outer surface of the welding strip.

6. The solder strip securing device of claim 1, wherein, The length of the control coil (4) is equal to the width of the welding strip guide groove (1); the lengths of the first magnetic sheet (2) and the second magnetic sheet (3) are both equal to the length of the control coil (4).

7. The solder strip securing device of claim 1, wherein The first elastic element (5) and the second elastic element (6) are arranged symmetrically with respect to the center plane of the welding strip guide groove (1).

8. The solder strip securing device of claim 7, wherein, The cross-section of the welding strip guide groove (1) is an isosceles trapezoid; The first side plate (13) is fixedly provided with a first connecting ear (131), and the first magnetic sheet (2) is fixedly provided with a first docking ear on the side away from the welding strip guide groove (1). The hooks at both ends of the first elastic member (5) are respectively connected to the first connecting ear (131) and the first docking ear. The second side plate (14) is fixed with a second connecting ear (141), and the second magnetic sheet (3) is fixed with a second docking ear on the side away from the welding strip guide groove (1). The hooks at both ends of the second elastic member (6) are respectively connected to the second connecting ear (141) and the second docking ear.

9. The welding strip fixing device according to claim 1, characterized in that, Also includes: A position sensor for detecting the position of the welding strip within the welding strip guide groove (1); An electrically controlled switch connected to the control coil (4); A controller connected to the position sensor and the electronic switch respectively; When the position sensor detects that the welding strip has reached the preset position, the controller controls the electronic switch to close according to the signal fed back by the position sensor so that the control coil (4) is energized.

10. A solder strip delivery apparatus characterized by, It includes a welding strip guide groove (1) and a welding strip fixing device as described in any one of claims 1 to 9, wherein the welding strip fixing device is disposed in the welding strip guide groove (1).

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