Positioning tool and series welding machine
By introducing a first position detector and controller into the positioning tool, the fault elastic needle is quickly identified, which solves the problem of long time to identify faults in the positioning tooling and improves the battery string welding efficiency.
Patent Information
- Application Number
- CN202421409980.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-19
AI Technical Summary
During the production process of solar cells, the elastic needle failure in the positioning tooling is difficult to quickly identify, resulting in low battery string welding efficiency.
A positioning tool is designed, including a base, an elastic needle, a first position detector and a controller. It is connected one by one to the stroke ends of the elastic needle through a plurality of first position detectors, detect and transmit stroke information to the controller, and determine whether the elastic needle is malfunctioning.
It realizes rapid identification of fault elastic needles, reduces fault identification time, and improves battery string welding efficiency.
Smart Images
Figure CN222764218U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of photovoltaic technology, and in particular to a positioning tool and a string welding machine. Background Art
[0002] In the production process of solar cells, the soldering ribbon is pressed onto the cell using a positioning tool, and then the soldering ribbon and the cell are welded together by a stringing machine to form a cell string. In the positioning tool, the soldering ribbon is pressed onto the cell mainly by an elastic pressing pin. The elastic pressing pin can press the soldering ribbon onto the cell relatively stably, but when the spring in the elastic pressing pin fails and cannot be compressed, the force exerted by the elastic pressing pin on the soldering ribbon is difficult to be effectively buffered, which causes the cell to be damaged due to excessive force.
[0003] In order to meet the welding needs of battery strings, a plurality of elastic pressure pins are usually provided on the positioning tool. When defective welding occurs, the elastic pressure pins on the positioning tool need to be inspected one by one to identify the faulty elastic pressure pins. Such an operation takes a lot of time, resulting in low welding efficiency of the battery string. Utility Model Content
[0004] Based on this, it is necessary to provide a positioning tool that can promptly identify faulty elastic pressure pins, and a string welding machine including the positioning tool, so as to improve the welding efficiency of the battery string.
[0005] A positioning tool comprises a base, an elastic pressure pin, a first position detector and a controller; the elastic pressure pin comprises a pressure belt end and a stroke end opposite to the pressure belt end, an elastic member is arranged between the pressure belt end and the stroke end, the pressure belt end is used to press the welding belt onto a battery cell, and the stroke end can move synchronously with the pressure belt end; there are multiple first position detectors and multiple elastic pressure pins, multiple first position detectors are connected to the stroke ends of multiple elastic pressure pins in a one-to-one correspondence, and multiple first position detectors are used to respectively detect the stroke information of the stroke ends of each elastic pressure pin; multiple first position detectors are all electrically connected to the controller, and the controller is used to receive the stroke information detected by the first position detector, and judge whether the corresponding elastic pressure pin has a fault according to the stroke information.
[0006] In some embodiments, the plurality of elastic pressure pins are distributed in a matrix.
[0007] In some embodiments, the positioning tool also includes a plurality of second position detectors, which are connected to the base and electrically connected to the controller. Each of the second position detectors corresponds to a row or column of the elastic pressure pins, respectively, so as to detect the initial position information of the elastic pressure pins in the corresponding row or column, and transmit the initial position information to the controller.
[0008] In some embodiments, a plurality of the second position detectors are located on the same side of the row or column of the elastic pressure pins.
[0009] A string welding machine comprises a workbench, a welding box and a positioning tool, wherein the workbench is provided with a first transmission member, the first transmission member is used to transmit battery cells and welding strips, the positioning tool is used to position the welding strips on the battery cells, and the welding box is connected to the workbench for welding the battery cells and the welding strips.
[0010] In some embodiments, a second transmission member is further disposed on the workbench, and the second transmission member is staggered with the first transmission member, and the second transmission member is used to carry and transmit the positioning tool through the welding box.
[0011] In some embodiments, a diversion gate is provided on the second transmission member, and the diversion gate is electrically connected to the controller. The controller is used to control the opening and closing of the diversion gate according to information about whether the elastic pressure pin fails.
[0012] In some embodiments, the string welding machine also includes a display platform, which is located between the first transmission member and the second transmission member. A display is provided on the display platform, and the display is electrically connected to the controller. The display is used to display the elastic pressure pin that has failed in the positioning tooling.
[0013] In some embodiments, the string welding machine also includes a first manipulator connected to the workbench, and the first manipulator is used to transfer the positioning tooling passing through the welding box to the display platform, and to transfer the positioning tooling on the display platform to the second transmission member.
[0014] In some embodiments, the stringer further includes a second manipulator, and the second manipulator is used to transfer the positioning tool without fault on the second transmission member to the welding ribbon on the first transmission member.
[0015] In the above positioning tool, the faulty elastic pressure pin can be quickly identified through the setting of multiple first position detectors and controllers, the identification time of the faulty elastic pressure pin can be reduced, and the welding efficiency of the battery string can be improved. Specifically, when the positioning tool presses the welding strip on the battery cell, the pressing strip end of the elastic pressure pin presses the welding strip, and the elastic member is compressed accordingly, so that the stroke end of the elastic pressure pin can move synchronously with the pressing strip end. At this time, the stroke information of the stroke end of the elastic pressure pin (such as the moving distance of the stroke end) can be detected by the first position detector. After the controller receives the stroke information detected by the first position detector, it can be compared with the preset qualified elastic pressure pin stroke information to determine whether the stroke information of the stroke end of each elastic pressure pin is within the qualified elastic pressure pin stroke information range. When the stroke information of the stroke end of the elastic pressure pin is within the qualified elastic pressure pin stroke information range, it indicates that the elastic pressure pin has no fault; when the stroke information of the stroke end of the elastic pressure pin is not within the qualified elastic pressure pin stroke information range, it indicates that the elastic pressure pin has a fault. Therefore, the positioning tool can quickly identify the faulty elastic pressure pin, reduce the identification time of the faulty elastic pressure pin, and improve the welding efficiency of the battery string. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the structure of the positioning tool in one embodiment of the present application.
[0017] Figure 2 for Figure 1 Schematic diagram of the corresponding positioning tooling, battery cells and welding ribbons.
[0018] Figure 3 Schematic diagram of the structure of a string welding machine in one embodiment of the present application.
[0019] Description of the markings in the figure:
[0020] 10. Positioning tool; 101. Base; 102. Elastic pressure needle; 1021. Pressing belt end; 1022. Travel end; 103. First position detector; 104. Controller; 105. Second position detector; 106. Information transmission line; 20. Stringer; 201. Welding box; 202. First transmission member; 203. Second transmission member; 204. Diversion gate; 205. Display platform; 206. First manipulator; 207. Second manipulator; 208. Temporary storage table; 30. Battery cell; 40. Welding belt. DETAILED DESCRIPTION
[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0022] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0024] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0026] See also Figure 1 and Figure 2, one embodiment of the present application provides a positioning tool 10. The positioning tool 10 includes a base 101, an elastic pressure pin 102, a first position detector 103 and a controller 104. The elastic pressure pin 102 includes a belt pressing end 1021 and a stroke end 1022 opposite to the belt pressing end 1021, and an elastic member is provided between the belt pressing end 1021 and the stroke end 1022. The belt pressing end 1021 is used to press the welding ribbon 40 onto the battery cell 30, and the stroke end 1022 can move synchronously with the belt pressing end 1021. There are multiple first position detectors 103 and multiple elastic pressure pins 102, and the multiple first position detectors 103 are connected to the stroke ends 1022 of the multiple elastic pressure pins 102 in a one-to-one correspondence. The multiple first position detectors 103 are used to respectively detect the stroke information of the stroke ends 1022 of each elastic pressure pin 102. The plurality of first position detectors 103 are all electrically connected to the controller 104 . The controller 104 is used to receive the stroke information detected by the first position detectors 103 , and determine whether the corresponding elastic pressure pin 102 is faulty according to the stroke information.
[0027] In the positioning tool 10 of the present embodiment, the faulty elastic pressure pin 102 can be quickly identified through the setting of multiple first position detectors 103 and the controller 104, thereby reducing the identification time of the faulty elastic pressure pin 102 and improving the welding efficiency of the battery string. Specifically, when the positioning tool 10 presses the welding strip 40 on the battery cell 30, the pressing band end 1021 of the elastic pressure pin 102 presses the welding strip 40, and the elastic member is compressed accordingly, so that the stroke end 1022 of the elastic pressure pin 102 can move synchronously with the pressing band end 1021. At this time, the stroke information of the stroke end 1022 of the elastic pressure pin 102 (such as the moving distance of the stroke end 1022) can be detected by the first position detector 103. After the controller 104 receives the stroke information detected by the first position detector 103, it can be compared with the preset stroke information of the qualified elastic pressure pin to determine whether the stroke information of the stroke end 1022 of each elastic pressure pin 102 is within the range of the qualified elastic pressure pin stroke information. When the stroke information of the stroke end 1022 of the elastic pressure pin 102 is within the range of the qualified elastic pressure pin stroke information, for example, when the moving distance of the stroke end 1022 is within the moving distance range of the qualified elastic pressure pin, it indicates that the elastic pressure pin 102 has no fault; when the stroke information of the stroke end 1022 of the elastic pressure pin 102 is not within the range of the qualified elastic pressure pin stroke information, for example, when the moving distance of the stroke end 1022 is not within the moving distance range of the qualified elastic pressure pin, it indicates that the elastic pressure pin 102 has a fault such as a jam or deformation. Therefore, the above-mentioned positioning tool 10 can quickly identify the faulty elastic pressure pin, reduce the identification time of the faulty elastic pressure pin, and improve the welding efficiency of the battery string.
[0028] Optionally, the first position detector 103 is fixed to the stroke end 1022 of the elastic pressure needle 102 .
[0029] It is understandable that the elastic pressure pin 102 can be a conventional elastic pressure pin used for battery string welding, and its structure and connection with the base 101 can be based on conventional understanding. The elastic member in the elastic pressure pin 102 can be a spring, which will not be repeated here.
[0030] In some embodiments, the plurality of elastic pressure pins 102 are arranged in a matrix. When the welding strip 40 is welded to the battery cell 30, there are a plurality of welding points on the welding strip 40, and the number of welding strips 40 is also large. The plurality of elastic pressure pins 102 arranged in a matrix can simultaneously apply pressure to the plurality of welding points on the plurality of welding strips 40, which is beneficial to improve the welding efficiency of the battery string.
[0031] In some embodiments, the stroke information of the stroke end 1022 of the elastic pressing pin 102 includes one or more of the position and the moving distance of the stroke end 1022. Optionally, the positioning tool 10 also includes a plurality of second position detectors 105. The second position detectors 105 are connected to the base 101, and the second position detectors 105 are electrically connected to the controller 104. Each second position detector 105 corresponds to a row or column of the elastic pressing pin 102, respectively, so as to detect the initial position information of the elastic pressing pin 102 of the corresponding row or column, and transmit the initial position information to the controller 104. The initial position information of the elastic pressing pin 102 can be detected by the second position detector 105, and combined with the information detected by the first position detector 103, the accuracy of the stroke information detection of the stroke end 1022 of the elastic pressing pin 102 can be improved. It can be understood that the initial position of the elastic pressing pin 102 represents the position of the stroke end 1022 of the elastic pressing pin 102 when the pressing belt end 1021 of the elastic pressing pin 102 just contacts the welding belt 40.
[0032] In some embodiments, the initial position information of the elastic pressing pin 102 detected by the second position detector 105 is the height H0 of the stroke end 1022 of the elastic pressing pin 102 relative to the base 101, and the position information detected by the first position detector 103 is the height H1 of the stroke end 1022 of the elastic pressing pin 102 relative to the base 101 when the pressing band end 1021 of the elastic pressing pin 102 presses the welding band 40 on the battery cell 30, and the moving distance of the stroke end 1022 of the elastic pressing pin 102 is H1-H0. When the moving distance H1-H0 of the stroke end 1022 of the elastic pressing pin 102 is within the moving distance range of the qualified elastic pressing pin, it indicates that the elastic pressing pin 102 has no fault; when the moving distance H1-H0 of the stroke end 1022 of the elastic pressing pin 102 is not within the moving distance range of the qualified elastic pressing pin, it indicates that the elastic pressing pin 102 has a fault such as a jam or deformation. Therefore, by comparing the moving distance H1-H0 of the stroke end 1022 of the elastic pressing pin 102 with the moving distance range of a qualified elastic pressing pin, the faulty elastic pressing pin can be quickly identified, the identification time of the faulty elastic pressing pin can be reduced, and the welding efficiency of the battery string can be improved.
[0033] In some embodiments, the plurality of second position detectors 105 are located on the same side of the row or column of the elastic pressure pins 102. In this case, it is convenient to arrange the positions of the plurality of second position detectors 105 and to set the position of the controller 104, which is conducive to improving the neatness of the installation of the components in the positioning tool 10.
[0034] It is understandable that the first position detector 103 and the controller 104 are electrically connected via the information transmission line 106, and the second position detector 105 and the controller 104 are electrically connected via the information transmission line 106. Furthermore, during the welding process of the battery string, the welding temperature is relatively high, usually 280°C to 350°C. In order to reduce the impact of high temperature on the information transmission line 106, the information transmission line 106 can be set inside the base 101. Furthermore, in order to reduce the impact of high temperature on the positioning tool 10, the positioning tool 10 is made of high temperature resistant material.
[0035] See also Figure 3 In another embodiment of the present application, a string welding machine 20 is provided. The string welding machine 20 includes a workbench (not shown in the figure), a welding box 201 and the above-mentioned positioning tool 10. A first transmission member 202 is provided on the workbench, and the first transmission member 202 is used to transmit the battery cell 30 and the welding ribbon 40. The positioning tool 10 is used to position the welding ribbon 40 on the battery cell 30. The welding box 201 is connected to the workbench for welding the battery cell 30 and the welding ribbon 40.
[0036] In the string welding machine 20 of this embodiment, by using the positioning tool 10, the faulty elastic pressure pin 102 can be quickly identified, the identification time of the faulty elastic pressure pin can be reduced, and the welding efficiency of the battery string can be improved.
[0037] In some embodiments, a second transmission member 203 is further provided on the workbench, and the second transmission member 203 is staggered with the first transmission member 202, and the second transmission member 203 is used to carry and transmit the positioning tool 10 passing through the welding box 201. Through the provision of the second transmission member 203, the positioning tool 10 after passing through the welding box 201 can be carried and transmitted, and then the positioning tool 10 can be transferred to the required position. It can be understood that the second transmission member 203 is staggered with the first transmission member 202, and the positioning tool 10 passing through the welding box 201 can be transferred to the second transmission member 203 without affecting the transmission of the battery string after welding by the welding box 201 on the first transmission member 202.
[0038] In some embodiments, a diversion gate 204 is provided on the second transmission member 203, and the diversion gate 204 is electrically connected to the controller 104, and the controller 104 is used to control the opening and closing of the diversion gate 204 according to the information of whether the elastic pressure pin 102 fails. After the positioning tool 10 passes through the welding box 201, the positioning tool 10 is transmitted on the second transmission member 203. When the controller 104 determines that the elastic pressure pin in the positioning tool 10 fails, it indicates that the positioning tool 10 cannot perform the next welding process. At this time, the diversion gate 204 can be controlled by the controller 104 to open, so as to transfer the failed positioning tool 10 to the temporary storage table 208 for temporary storage. When the controller 104 determines that the elastic pressure pin in the positioning tool 10 does not fail, it indicates that the positioning tool 10 can continue to be used in the next welding process. Therefore, in these embodiments, when a fault is detected in the positioning tool 10, the welding process can be continued without stopping the welding process, which is conducive to further improving the welding efficiency of the battery string.
[0039] In some embodiments, the string welding machine 20 also includes a display platform 205. The display platform 205 is located between the first transmission member 202 and the second transmission member 203. A display is provided on the display platform 205. The display is electrically connected to the controller 104, and the display is used to display the elastic pressure pin that has failed in the positioning tool 10. The elastic pressure pin that has failed can be displayed by the display platform 205, which is convenient for targeted repair or replacement of the faulty elastic pressure pin in the positioning tool 10. In this way, the faulty elastic pressure pin can be quickly located. When the positioning tool 10 is repaired, it is not necessary to check the elastic pressure pins in the positioning tool 10 one by one, which is conducive to improving the maintenance efficiency of the positioning tool 10. Optionally, an AIO identification system is provided on the display platform 205.
[0040] Optionally, when the positioning tool 10 is inspected, the faulty elastic pressure pin can be displayed in red on the display platform 205, and the normal elastic pressure pin can be displayed in green or without any color. In this way, the faulty elastic pressure pin and the normal elastic pressure pin can be clearly distinguished, further improving the maintenance efficiency of the positioning tool 10.
[0041] In some embodiments, the string welding machine 20 further includes a first manipulator 206, which is connected to the workbench and is used to transfer the positioning tool 10 passing through the welding box 201 to the display platform 205, and to transfer the positioning tool 10 on the display platform 205 to the second transmission member 203. The first manipulator 206 can be set to conveniently and quickly grab and transfer the positioning tool 10, which is conducive to improving the transfer efficiency of the positioning tool 10.
[0042] In some embodiments, the stringer 20 further includes a second manipulator 207, which is used to transfer the positioning tool 10 without fault on the second transmission member 203 to the welding strip 40 on the first transmission member 202. The second manipulator 207 can be set to conveniently and quickly grab and transfer the positioning tool 10, further improving the transfer efficiency of the positioning tool 10. It is understandable that when it is detected that the positioning tool 10 has no fault, the positioning tool 10 without fault on the second transmission member 203 can be transferred to the welding strip 40 on the first transmission member 202 by the second manipulator 207 for continued use.
[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.
[0044] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims, and the specification and drawings may be used to interpret the contents of the claims.
Claims
1. A positioning tool (10), characterized in that: The invention comprises a base (101), an elastic pressure needle (102), a first position detector (103) and a controller (104); the elastic pressure needle (102) comprises a belt pressing end (1021) and a travel end (1022) opposite to the belt pressing end (1021); an elastic member is provided between the belt pressing end (1021) and the travel end (1022); the belt pressing end (1021) is used to press a welding ribbon (40) onto a battery cell (30); the travel end (1022) can move synchronously with the belt pressing end (1021); the first position detector (103) and the elastic pressure needle (102) There are multiple first position detectors (103), each of which is connected to the stroke ends (1022) of the multiple elastic pressure needles (102) in a one-to-one correspondence. The multiple first position detectors (103) are used to respectively detect the stroke information of the stroke end (1022) of each elastic pressure needle (102); the multiple first position detectors (103) are all electrically connected to the controller (104), and the controller (104) is used to receive the stroke information detected by the first position detector (103), and determine whether the corresponding elastic pressure needle (102) has a fault based on the stroke information.
2. The positioning tool (10) according to claim 1, characterized in that: The plurality of elastic pressure pins (102) are distributed in a determinant pattern.
3. The positioning tool (10) according to claim 2, characterized in that: The positioning tool (10) also includes a plurality of second position detectors (105), the second position detectors (105) being connected to the base (101), the second position detectors (105) being electrically connected to the controller (104), and each second position detector (105) corresponding to a row or column of the elastic pressure pins (102) for detecting initial position information of the elastic pressure pins (102) in the corresponding row or column, and transmitting the initial position information to the controller (104).
4. The positioning tool (10) according to claim 3, characterized in that: A plurality of the second position detectors (105) are located on the same side of the row or column of the elastic pressure pins (102).
5. A string welding machine (20), characterized in that: The invention comprises a workbench, a welding box (201), and a positioning tool (10) according to any one of claims 1 to 4, wherein a first transmission member (202) is provided on the workbench, the first transmission member (202) is used to transmit a battery cell (30) and a welding ribbon (40), the positioning tool (10) is used to position the welding ribbon (40) on the battery cell (30), and the welding box (201) is connected to the workbench for welding the battery cell (30) and the welding ribbon (40).
6. The stringer (20) according to claim 5, characterized in that: The workbench is also provided with a second transmission member (203), the second transmission member (203) being staggered with the first transmission member (202), and the second transmission member (203) being used to carry and transmit the positioning tool (10) passing through the welding box (201).
7. The stringer (20) according to claim 6, characterized in that: The second transmission member (203) is provided with a diversion gate (204), the diversion gate (204) being electrically connected to the controller (104), and the controller (104) being used to control the opening and closing of the diversion gate (204) according to information on whether the elastic pressure pin (102) has a fault.
8. The stringer (20) according to claim 6 or 7, characterized in that: The stringer (20) further comprises a display platform (205), wherein the display platform (205) is located between the first transmission member (202) and the second transmission member (203), and a display is provided on the display platform (205), wherein the display is electrically connected to the controller (104), and the display is used to display the elastic pressure pin (102) that has a fault in the positioning tool (10).
9. The stringer (20) according to claim 8, characterized in that: The string welding machine (20) further comprises a first manipulator (206), the first manipulator (206) being connected to the workbench, the first manipulator (206) being used to transfer the positioning tool (10) passing through the welding box (201) to the display platform (205), and being used to transfer the positioning tool (10) on the display platform (205) to the second transmission member (203).
10. The stringer (20) according to claim 6 or 7, characterized in that: The stringer (20) further comprises a second manipulator (207), wherein the second manipulator (207) is used to transfer the positioning tool (10) without fault on the second transmission member (203) to the welding strip (40) on the first transmission member (202).