Automatic welding tool applied to heterojunction battery

Abstract

The utility model relates to the field of solar cell manufacturing, in particular to an automatic welding tool applied to a heterojunction cell, which comprises a base, a carrier plate arranged on the base, a control button arranged on the base, and an axial connector connected with the base and provided with a welding cavity. A welding mechanism and a coordinate controller are arranged on the axial connecting body, and the welding mechanism faces the carrier plate. The automatic welding tool is simple in structure, compared with a main grid welding strip of a common manual welding heterojunction battery at present, the automatic welding tool is more standard in welding and easy to operate, reduces labor cost, is provided with a user-defined control button, can be arranged according to different welding requirements, and simplifies repeated welding operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of solar cell manufacturing, especially to a kind of automatic welding tool applied to heterojunction cell. BACKGROUND

[0002] Heterojunction cell is a kind of solar cell technology, and heterojunction cell has the advantages of high efficiency, good stability and low temperature coefficient.In the current heterojunction cell manufacturing process, the welding strip needs to be accurately welded on the cell main grid, and the main grid tension of the heterojunction cell is measured.Compared with manual welding of welding strip, the welding efficiency of automatic equipment is higher, and the welding of welding strip is more standardized.

[0003] For example, the utility model disclosed in Chinese patent with publication number CN210997130U, a welding strip laying mechanism of cell piece and solar cell piece welding machine, welding strip laying mechanism includes transmission device, piece-to-piece welding strip laying device and inter-string welding strip laying device, transmission device has laying section at welding strip laying station, for carrying cell piece group, transmission device is used to convey cell piece group from front to back, piece-to-piece welding strip laying device is used to carry multiple piece-to-piece welding strips extending front and back to laying section, so that multiple piece-to-piece welding strips are arranged in intervals along the transverse direction in the laying section, and correspondingly lap joint between the front and back two rows of cell piece groups, inter-string welding strip laying device is used to carry inter-string welding strip extending along the transverse direction to the laying section, so that the inter-string welding strip corresponds to lap joint between multiple cell pieces of cell piece group.The welding strip laying mechanism provided by the above-mentioned utility model can automatically complete the laying of piece-to-piece welding strip and inter-string welding strip of interconnection plate, and improve the production efficiency of solar cell panel.However, when the above-mentioned utility model is used to weld heterojunction cells with different welding requirements, the welding machine needs to be adjusted accordingly, so that the welding of heterojunction cells with different welding requirements becomes cumbersome. UTILITY MODEL CONTENTS

[0004] In view of the problem that the welding of heterojunction cells with different welding requirements is cumbersome in the prior art, the utility model provides a welding tool that is convenient to adjust the welding mode, which can quickly switch different welding modes and is simple to operate.

[0005] To achieve the above technical effects, the utility model provides:

[0006] An automatic welding tool applied to heterojunction cell, comprising a base, a loading plate is arranged on the base, a control button is arranged on the base, an axial connecting body connected with the base is further arranged, the axial connecting body has a welding cavity, a welding mechanism and a coordinate controller are arranged on the axial connecting body, and the welding mechanism faces the loading plate.

[0007] The base connects the axial connecting body and serves as a bearing part, the carrier plate is used for bearing the battery piece, the main grid solder strip and the pressing net, the welding mechanism is used for welding the battery piece and the main grid solder strip, the axial connecting body is used for connecting the welding mechanism and the base, the welding cavity is used for containing the carrier plate and the battery piece on the carrier plate, and the control button is used for starting the automatic welding tool and selecting the welding function.

[0008] The welding mechanism comprises a telescopic motor and a heating lamp tube, the telescopic motor is fixedly connected with the axial connecting body, the heating lamp tube is fixedly connected with the telescopic motor, and the telescopic direction of the telescopic motor is perpendicular to the plane where the carrier plate is located. The telescopic motor is fixedly connected with the heating lamp tube, the distance between the heating lamp tube and the carrier plate is adjusted through the telescopic movement of the telescopic motor, and the heating temperature of the heating lamp tube is preferably 140-150 DEG C.

[0009] The coordinate control component is internally provided with a control element, the coordinate controller is connected with the welding mechanism, the coordinate controller controls the telescopic position of the telescopic motor, and the coordinate controller controls the on-off of the heating lamp tube. The movement of the telescopic motor and the on-off of the heating lamp tube can be manually controlled through the coordinate controller.

[0010] The base and the carrier plate are provided with a sliding rail mechanism, the carrier plate is provided with a pressing net positioning groove, and the pressing net positioning groove comprises two oppositely arranged L-shaped positioning rods. The pressing net positioning groove is used for positioning the pressing net, the pressing net is rectangular, and the opposite corners are abutted against the inner folded corners of the pair of L-shaped positioning rods, so that the positioning effect is achieved.

[0011] The coordinate controller is provided with Y-axis control buttons and Z-axis control buttons, the Y-axis control buttons control the sliding rail mechanism, the Z-axis control buttons control the telescopic motor, the coordinate controller is also provided with a display screen, and the display screen displays the coordinate positions of the sliding rail mechanism and the telescopic motor in real time.

[0012] The control buttons comprise a power switch and a plurality of custom control buttons.

[0013] The custom control buttons are connected with the coordinate controller, the custom control buttons comprise a first switch and a second switch, the first switch has a manual mode, the second switch has a coordinate storage mode, and the custom control buttons further comprise a reset switch and an emergency stop switch. The first switch is used for enabling the automatic welding tool to enter the manual control mode and controlling the telescopic motor and the sliding rail mechanism through the coordinate controller, and the second switch is used for recording the coordinate positions of the telescopic motor and the sliding rail mechanism which are set and is used for repeated welding operation of the battery piece with the same welding requirement.

[0014] The base is provided with a plurality of supporting legs away from the carrier plate.

[0015] The utility model discloses the beneficial effect is:

[0016] 1. The utility model discloses a welding assembly line structure is simpler than prior art;

[0017] 2. Can set up corresponding welding parameter to different battery piece, more flexible;

[0018] 3. Compared with the manual welding of current common, automatic welding tooling welds more standard, and simple operation reduces the artificial cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the structure schematic drawing of automatic welding tooling for heterojunction battery in embodiment one.

[0020] Figure 2 It is the structure schematic drawing of coordinate controller.

[0021] Figure 3 It is the structure schematic drawing of pressing net positioning groove in embodiment one.

[0022] Figure 4 It is the structure schematic drawing of automatic welding tooling for heterojunction battery in embodiment two.

[0023] Figure 5 It is the structure schematic drawing of pressing net positioning groove in embodiment two.

[0024] REFERENCE NUMERALS

[0025] 1, base;2, axial connecting body;3, welding mechanism;4, coordinate controller;5, control button;6, supporting leg;7, heterojunction battery piece;8, main grid solder strip;9, pressing net;

[0026] 11, carrier plate;12, slide rail mechanism;13, pressing net positioning groove;14, L type positioning rod;21, welding cavity;31, telescopic motor;32, heating lamp tube;41, display screen;42, Y axis control button;43, Z axis control button;44, confirm / save button;45, cancel / return button;51, power switch;52, self-defined control button;53, first switch;54, second switch;55, third switch;56, fourth switch;57, reset switch;58, emergency stop switch. DETAILED DESCRIPTION

[0027] The following content details the utility model, and the following paragraphs more in detail define different aspects of embodiment, and the defined aspects can be combined with any other one or more aspects, unless the part that cannot be combined is emphasized.

[0028] Embodiment one

[0029] AsFigure 1 As shown, an automatic welding tool applied to a heterojunction cell includes a base 1, the base 1 is horizontally arranged in a box shape, further including an axial connecting body 2 fixedly connected with the base 1, the axial connecting body 2 is in the shape of a hollow frame in the middle, the axial connecting body 2 is provided with a welding cavity 21 for accommodating a carrier plate 11 during welding; the upper surface of the base 1 is connected with a slide rail mechanism 12 and the carrier plate 11, the carrier plate 11 is horizontally arranged, the slide rail mechanism 12 is arranged between the carrier plate 11 and the base 1, the slide rail mechanism 12 is composed of two slide rails, both of which are perpendicular to the connecting surface of the axial connecting body 2 and the base 1, and the slide rails can be extended in the direction away from the axial connecting body 2; the carrier plate 11 and the slide rail mechanism 12 are fixedly connected, and the carrier plate 11 can move in extension with the slide rail; the upper surface of the carrier plate 11 is provided with a pressing net positioning groove 13, the pressing net positioning groove 13 is provided with two L-shaped positioning rods 14 arranged diagonally, the pressing net 9 can be accommodated in the groove and positioned.

[0030] A welding mechanism 3 is arranged on the axial connecting body 2, and the welding mechanism 3 is arranged at the upper end of the connecting surface of the axial connecting body 2 and the base 1; the welding mechanism 3 includes an extension motor 31 and a welding lamp tube, the extension motor 31 is a servo motor, and the extension motor 31 can move in extension perpendicular to the plane of the carrier plate 11; the extension motor 31 and the slide rail mechanism 12 are both driven by an integral motor, and a transmission belt is connected with a driving motor; the heating lamp tube 32 includes a lamp holder and a lamp tube, the lamp holder is in a rectangular shape, and the plane of the lamp holder is parallel to the plane of the carrier plate 11; the lamp tube includes three parallel and spaced lamp tubes arranged on a plane of the lamp holder close to the carrier plate 11.

[0031] A coordinate controller 4 is arranged on one side surface of the axial connecting body 2, the coordinate controller 4 controls the coordinates of the extension motor 31 and the slide rail mechanism 12 through a built-in control element, the control element is a PLC assembly, and the control element is connected with the extension motor 31 and the slide rail mechanism 12; the coordinate controller 4 is provided with a Y-axis control button 42, a Z-axis control button 43, a confirm / save key 44, a cancel / return key 45 and a display screen 41, the display screen 41 is used to display the real-time coordinate data of the extension motor 31 and the slide rail mechanism 12, the Y-axis control button 42 includes a Y-axis + and a Y-axis -, the Z-axis control button 43 includes a Z-axis + and a Z-axis -, the Y-axis + and the Y-axis - are used to control the forward and backward movement of the slide rail mechanism 12, and the Z-axis + and the Z-axis - are used to control the upward and downward movement of the extension motor 31; a power switch 51 and a self-defined control button 525 are arranged on the base 1, the power switch 51 is used for overall power supply control of the automatic welding tool, and the self-defined control button 525 includes a first switch 53, a second switch 54, a reset switch 57 and an emergency stop switch 58; the first switch 53 is a manual control switch, the second switch 54 is a coordinate recording switch, the reset switch 57 makes the slide rail mechanism 12 and the extension motor 31 return to the initial position, and the emergency stop switch 58 can stop the tool during operation.

[0032] Four feet 6 are arranged on the lower surface of the base 1, respectively arranged at the four corners of the lower surface of the base 1.

[0033] The operation process and operation method of the automatic welding tool:

[0034] The operator places the heterojunction cell 7 in the center of the carrier plate 11, that is, in the center of the pressing net positioning groove 13, lays the main grid welding strip 8 on the main grid of the heterojunction cell 7, and presses the pressing net 9 on the heterojunction cell 7, and at the same time, the pressing net 9 is embedded in the pressing net positioning groove 13 and positioned; the operator presses the power switch 51, continues to press the first switch 53 to make the automatic welding tool enter the manual mode, adjusts the Y-axis coordinates of the carrier plate 11 through the coordinate controller 4, inserts the carrier plate 11 into the welding cavity 21 of the axial connecting body 2, so that the heating lamp 32 is opposite to the main grid of the heterojunction cell 7 and the main grid welding strip 8, adjusts the Z-axis coordinates of the heating lamp 32, moves the heating lamp 32 to the appropriate height, the distance between the heating lamp 32 and the heterojunction cell 7 is 3cm, the heating temperature is 150℃, and the time is 2s, after the Y-axis and Z-axis coordinates are set, the coordinates can be fixed by pressing the confirm / save button 44, the fixed coordinates can be cancelled by pressing the cancel / return button 45, and the set coordinates can be adjusted, and after the adjustment is completed, the confirm / save button 44 is pressed; the second switch 54 is pressed, and the second switch 54 records the coordinate data, the heating temperature and the heating time at this time; after the welding is completed, the reset switch 57 is pressed, and the carrier plate 11 and the telescopic motor 31 move to the initial position; the pressing net 9 is removed and the heterojunction cell 7 is taken out, and the welding is completed; when the next welding operation is performed, the heterojunction cell 7, the main grid welding strip 8 and the pressing net 9 are pressed, and the second switch 54 is pressed to perform welding.

[0035] Example two

[0036] Compared with example one, the automatic welding tool in example two has more flexibility, the inlaid groove of the pressing net 9 is set to multiple common sizes to adapt to different sizes of the heterojunction cell 7; multiple custom control buttons 525 for recording coordinate data are added, and the coordinates when welding different sizes of the heterojunction cell 7 are recorded to facilitate welding of different heterojunction cells 7.

[0037] The utility model provides an automatic welding tooling applied to heterojunction cell, including base 1, base 1 is box -like, horizontal arrangement is personally experienced sth., still include with the axial connecting body 2 of fixed connection of base 1, axial connecting body 2 is hollow in the middle frame body, axial connecting body 2 is equipped with welding cavity 21, and welding cavity 21 is used to accommodate carrier plate 11 during welding, the upper surface of base 1 is connected with slide rail mechanism 12 and carrier plate 11, carrier plate 11 is horizontally arranged, and slide rail mechanism 12 is arranged between carrier plate 11 and base 1, and slide rail mechanism 12 is including two slide rails, and the two slide rails are perpendicular to the connecting face of axial connecting body 2 and base 1, and the slide rail can be telescopic to the direction away from axial connecting body 2, carrier plate 11 and slide rail mechanism 12 are fixedly connected, and carrier plate 11 can be telescopic motion with slide rail, the upper surface of carrier plate 11 is equipped with press net positioning groove 13, is equipped with a plurality of pairs of L type slots on press net positioning groove 13, and each pair of L type slot can correspond to the press net 9 of different size, according to the size of different press net 9, the pair of L type positioning rod 14 is placed into the corresponding L type slot, and a pair of corners of press net 9 is placed into L type positioning rod 14, so that press net 9 is positioned.

[0038] Welding mechanism 3 is arranged on axial connecting body 2, and welding mechanism 3 is arranged on the upper end of the connecting face of axial connecting body 2 and base 1, welding mechanism 3 includes telescopic motor 31 and welding lamp tube, and telescopic motor 31 is servo motor, and telescopic motor 31 can be telescopic motion perpendicular to the plane of carrier plate 11, and telescopic motor 31 and slide rail mechanism 12 are all driven by integral motor, and transmission belt is connected with drive motor, heating lamp tube 32 includes lamp holder and lamp tube, and the lamp holder is rectangular, and the plane of lamp holder is parallel to the plane of carrier plate 11, and the lamp tube includes three, and the three lamp tubes are parallel and interval arranged on the plane of lamp holder close to carrier plate 11.

[0039] A coordinate controller 4 is arranged on one side of the axial connector 2. The coordinate controller 4 controls the coordinates of the telescopic motor 31 and the slide rail mechanism 12 through the built-in control element, which is a PLC component. The Y-axis control button 42, the Z-axis control button 43, the confirm / save key 44, the cancel / return key 45 and the display screen 41 are arranged on the coordinate controller 4. The display screen 41 is used to display the real-time coordinate data of the telescopic motor 31 and the slide rail mechanism 12. The Y-axis control button 42 includes Y-axis + and Y-axis -. The Z-axis control button 43 includes Z-axis + and Z-axis -. The Y-axis + and Y-axis - are used to control the forward and backward movement of the slide rail mechanism 12. The Z-axis + and Z-axis - are used to control the upward and downward movement of the telescopic motor 31. The power switch 51 and the self-defined control button 525 are arranged on the base 1. The power switch 51 is used for the overall power supply control of the automatic welding tool. The self-defined control button 525 includes the first switch 53, the second switch 54, the third switch 55, the fourth switch 56, the reset switch 57 and the emergency stop switch 58. The first switch 53 is a manual control switch. The second switch 54, the third switch 55 and the fourth switch 56 are coordinate recording switches, which can record different welding coordinate data separately. The reset switch 57 makes the slide rail mechanism 12 and the telescopic motor 31 return to the initial position. The emergency stop switch 58 can stop the tool running in an emergency.

[0040] Four supporting legs 6 are arranged on the lower surface of the base 1.

[0041] The running process and operation method of the automatic welding tool are as follows:

[0042] The operator selects the size of the heterojunction cell 7 corresponding to the size of the pressing net positioning groove 13, and installs the L-shaped positioning rod 14, places the heterojunction cell 7 in the center of the carrier plate 11, that is, in the center of the pressing net positioning groove 13, lays the main grid ribbon 8 on the main grid of the heterojunction cell 7, and presses the pressing net 9 on the heterojunction cell 7, and the pressing net 9 is embedded in the pressing net positioning groove 13 and positioned; the operator presses the power switch 51, continues to press the first switch 53 to make the automatic welding tool enter the manual mode, adjusts the Y-axis coordinates of the carrier plate 11 through the coordinate controller 4, makes the carrier plate 11 extend into the welding cavity 21 of the axial connecting body 2, makes the heating lamp tube 32 face the main grid and the main grid ribbon 8 of the heterojunction cell 7, adjusts the Z-axis coordinates of the heating lamp tube 32, moves the heating lamp tube 32 to a suitable height, and the distance between the heating lamp tube 32 and the heterojunction cell 7 is 3cm, the heating temperature is 150 DEG C, and the time is 2s; after the Y-axis and Z-axis coordinates are set, the coordinates can be fixed by pressing the confirm / save key 44, the fixed coordinates can be cancelled by pressing the cancel / return key 45, and the set coordinates are adjusted, and the confirm / save key 44 is pressed after the adjustment is completed; the second switch 54 (or the third switch 55 and the fourth switch 56) is pressed, and the second switch 54 (or the third switch 55 and the fourth switch 56) records the coordinate data, the heating temperature and the heating time at this time; after welding, the reset switch 57 is pressed, and the carrier plate 11 and the telescopic motor 31 move to the initial position; the pressing net 9 is removed, and the heterojunction cell 7 is taken out, and the welding is completed; when the next repeated welding is performed, the heterojunction cell 7, the main grid ribbon 8 and the pressing net 9 are pressed, and the second switch 54 (or the third switch 55 and the fourth switch 56) can be welded.

[0043] Compared with the automatic welding tool in the first embodiment, the second embodiment is more flexible and can weld three different sizes of cell pieces; the first embodiment is more practical for welding one type of cell piece, and the structure and function are simpler.

[0044] Compared with the automatic welding tool in the first embodiment, the second embodiment is more flexible and can weld three different sizes of cell pieces; the first embodiment is more practical for welding one type of cell piece, and the structure and function are simpler.

[0045] The automatic welding tool for heterojunction cells is described in detail. The specific embodiments applied in this paper describe the principles and implementation methods of the utility model, and the above embodiment description is only used to help understand the utility model. It should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principles of the utility model, the utility model can be improved and modified in many ways, and these improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims

1. An automatic welding tool applied to a heterojunction cell, characterized by, The device includes a base on which a carrier plate is mounted, and a control button is provided on the base. It also includes an axial connector connected to the base, the axial connector having a welding cavity, a welding mechanism and a coordinate controller on the axial connector, the welding mechanism facing the carrier plate.

2. The automatic soldering tool applied to a heterojunction cell according to claim 1, wherein The welding mechanism includes a telescopic motor and a heating lamp. The telescopic motor is fixedly connected to the axial connecting body, and the heating lamp is fixedly connected to the telescopic motor. The telescopic direction of the telescopic motor is perpendicular to the plane of the carrier plate.

3. The automatic soldering tool applied to the heterojunction cell according to claim 2, characterized in that, The coordinate controller has a built-in control element and is connected to the welding mechanism. The coordinate controller controls the extension and retraction position of the telescopic motor and the switching on and off of the heating lamp.

4. The automatic soldering tool applied to a heterojunction cell according to claim 3, characterized in that, A slide rail mechanism is provided between the base and the carrier plate, and a mesh positioning groove is provided on the carrier plate, the mesh positioning groove including two L-shaped positioning rods arranged opposite each other.

5. The automatic soldering tool applied to a heterojunction cell according to claim 4, wherein The coordinate controller is equipped with a Y-axis control button and a Z-axis control button. The Y-axis control button controls the slide rail mechanism, and the Z-axis control button controls the telescopic motor. The coordinate controller is also equipped with a display screen, which displays the coordinate positions of the slide rail mechanism and the telescopic motor in real time.

6. The automatic soldering tooling for use in heterojunction cells according to any one of claims 1 to 5, characterized in that, The control buttons include a power switch and several custom control buttons.

7. An automatic welding fixture for heterojunction solar cells according to claim 6, characterized in that, The custom control button connects the coordinate controller. The custom control button includes a first switch and a second switch. The first switch has a manual mode, and the second switch has a coordinate storage mode. It also includes a reset switch and an emergency stop switch.

8. An automatic welding fixture for heterojunction solar cells according to claim 6, characterized in that, The base has several legs on the side away from the carrier plate.

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