Solder strip pressing tool
By designing multiple rows of pressure pins in the welding ribbon compression tooling, including longer first type pressure pins and shorter second type pressure pins, the problem of instantaneous impact on the battery cells when the welding ribbon is pressed is solved and reduces the Reduces the risk of cracking and improves string quality.
Patent Information
- Application Number
- CN202421041411.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-14
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-14
AI Technical Summary
When the existing welding tape compression tooling is pressed, the synchronous drop of the press needle will cause instantaneous impact on the battery cell, increasing the risk of hidden cracking.
A welding strip pressing tool is designed, which includes multiple rows of pressing pins, and each row of pressing pins has at least one longer first type pressing pin and a plurality of shorter second type pressing pins. The height of the pressing surface of the first type of indenter in the free state is lower than that of the second type of indenter. This ensures that when the welding strip pressing tool is lowered, the first type of indenter contacts first and gradually shrinks to avoid instantaneous impact.
Through this design, the welding ribbon compression tooling will not have an instantaneous impact on the battery cells when compressing the welding ribbons, reducing the risk of cell cracks. At the same time, it ensures that the welding ribbons are close to the battery cells and improves the quality of the string.
Smart Images
Figure CN222382046U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of photovoltaic cell assembly production, and specifically to a welding strip pressing tool. Background Art
[0002] When making a battery string, it is necessary to lay the battery cells and welding ribbons on the stringing conveyor. The stringing conveyor conveys the laid battery cells and welding ribbons to the bottom of the stringing device for stringing, so that the welding ribbons are welded and / or bonded to the battery cells to make a battery string.
[0003] In order to ensure the quality of the string, it is also necessary to lay the solder ribbon pressing tool on the battery cell. The pressing pins on the solder ribbon pressing tool press the solder ribbon to make the solder ribbon close to the battery cell. The lengths of the pressing pins on the existing solder ribbon pressing tool are all equal. When the solder ribbon pressing tool is released, all the pressing pins fall onto the corresponding solder ribbon synchronously, and the pressing pins produce an instantaneous impact on the battery cell, which easily increases the risk of hidden cracks in the battery cell. Utility Model Content
[0004] In order to solve the above technical problems, the present application provides a welding strip pressing tool, which adopts the following technical solutions:
[0005] A welding strip pressing tool, comprising:
[0006] frame;
[0007] Multiple rows of pressure pins are arranged on the frame, each row of pressure pins includes multiple pressure pins arranged along a straight line, the pressure pins are elastically connected to the frame, and each row of pressure pins is used to press a welding strip;
[0008] There is at least one first-type pressing pin among the pressing pins, and the other pressing pins are second-type pressing pins. The pressing surface height of the first-type pressing pins in a free state is lower than the pressing surface height of the second-type pressing pins in a free state.
[0009] The solder strip pressing tool provided by the present application is provided with at least one relatively long first-type pressing pin. When the solder strip pressing tool is lowered onto the battery cell, the first-type pressing pin first contacts the corresponding solder strip on the battery cell. As the solder strip pressing tool continues to descend, the first-type pressing pin gradually shrinks until each row of pressing pins presses the corresponding solder strip onto the battery cell. When the solder strip pressing tool of the present application is used to press the solder strip, the solder strip pressing tool will not produce an instantaneous impact on the battery cell, thereby reducing the risk of hidden cracks in the battery cell.
[0010] In some embodiments, the height of the compression surface of the first type of pressing pins in a free state is 2.1-2.9 mm lower than the height of the compression surface of the second type of pressing pins in a free state.
[0011] According to factors such as the pressure-bearing capacity of the battery cell and the maximum telescopic length of the first type of press pins, the compression surface height of the first type of press pins in the free state is set to be 2.1-2.9mm lower than the compression surface height of the second type of press pins in the free state. This can ensure that each row of press pins can eventually effectively press the corresponding solder strip onto the battery cell without causing pressure damage to the battery cell.
[0012] In some embodiments, there is at least one first type of pressure pin in each row of pressure pins.
[0013] Since there is at least one first-type press pin in each row of press pins, when the solder strip pressing tool is lowered onto the battery cell, the first-type press pins in each row of press pins contact a corresponding solder strip on the battery cell to position the corresponding solder strip and prevent the corresponding solder strip from being displaced.
[0014] In some embodiments, the first type of press pins in each row of press pins are located at at least one of the head end, the tail end and the middle of the frame.
[0015] When the solder strip pressing tool is lowered onto the battery cell, the first type of press pins at the head end of each row of press pins can be used to position the head end of the solder strip, the first type of press pins at the tail end can be used to position the tail end of the solder strip, and the first type of press pins in the middle can be used to position the middle part of the solder strip to prevent the solder strip from shifting in position.
[0016] In some embodiments, there are at least two first-type press needles in each row of press needles, and the at least two first-type press needles are arranged continuously or at intervals.
[0017] When the solder strip pressing tool is lowered onto the battery cell, at least two first-type pressing pins in each row of pressing pins cooperate to position the solder strip from different positions, thereby improving the positioning effect.
[0018] In some embodiments, there are multiple first-type pressing needles among the pressing needles, and the multiple first-type pressing needles are evenly arranged on the frame.
[0019] When the solder ribbon pressing tool is lowered onto the battery cell, multiple first-type pressing pins are evenly pressed against the battery cell. During the lowering process of the solder ribbon pressing tool, the battery cell is evenly stressed, thereby reducing the risk of the battery cell being damaged by compression.
[0020] In some embodiments, the pressing pin is a light-transmitting pressing pin, and a plurality of light-transmitting holes are provided on the frame. The light-transmitting holes are located between adjacent pressing pins, and both the pressing pin and the light-transmitting hole correspond to a glue point on the battery cell.
[0021] When multiple glue dots are printed on the surface of the battery cell, since the light-transmitting pressing pins and the light-transmitting holes correspond to the positions of the glue dots on the battery cell, when a light source (such as infrared light, laser or UV light, etc.) irradiates the battery cell from above the solder ribbon pressing tooling, the light can pass through the light-transmitting pressing pins and the light-transmitting holes to reach the glue dots, causing each glue dot to solidify and firmly bond the solder ribbon to the battery cell.
[0022] In some embodiments, two adjacent rows of light-transmitting holes are staggered, and two adjacent rows of pressure pins are staggered.
[0023] When adjacent glue points on the battery cell are staggered, two adjacent rows of light-transmitting holes and two adjacent rows of pressing pins are staggered to ensure that light can be irradiated to the glue points smoothly.
[0024] In some embodiments, the height of the pressing surface of each pressing pin in a free state is lower than the bottom surface height of the frame; and the lower parts of both ends of the frame are respectively concave to form support steps.
[0025] By setting the pressing surface height of each pressing pin in the free state to be lower than the bottom surface height of the frame, each pressing pin can contact the battery cell before the frame, which can ensure that the solder strip is smoothly pressed onto the battery cell. Support steps are respectively provided under both ends of the frame to facilitate supporting the tooling from the support steps.
[0026] In some embodiments, magnetic suction parts are respectively provided at both ends of the frame, and soft pads are respectively provided on the bottom surfaces of both ends of the frame.
[0027] By setting magnetic suction parts at both ends of the frame, on the one hand, when transporting the welding tape pressing tooling, the tooling transport mechanism can pick up the welding tape pressing tooling by adsorbing the magnetic suction parts at both ends of the frame, and on the other hand, the battery cell conveying mechanism can also position the welding tape pressing tooling by adsorbing the magnetic suction parts at both ends of the frame, ensuring that each row of pressure pins on the welding tape pressing tooling can continuously and stably press the corresponding welding tape on the battery cell to prevent the welding tape from shifting in position. By setting soft pads on the bottom surfaces at both ends of the frame, the friction between the bottom surfaces at both ends of the frame and the supporting surface of the battery cell (i.e., the conveyor belt of the battery cell conveying mechanism) can be reduced, thereby extending the service life of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the welding strip pressing tool in the embodiment of the present application;
[0029] Figure 2 Schematic diagram of the top view of the welding strip pressing tool in the embodiment of the present application;
[0030] Figure 3 This is a side structural schematic diagram of the welding strip pressing tool in the first embodiment of the present application;
[0031] Figure 4This is a side structural schematic diagram of a welding strip pressing tool in the second embodiment of the present application;
[0032] Figure 5 This is a schematic side structural diagram of a welding strip pressing tool in the third embodiment of the present application;
[0033] Figure 6 This is a schematic side view of the structure of the welding strip pressing tool in the fourth embodiment of the present application;
[0034] Figure 7 This is a schematic diagram of the effect of the welding strip pressing tool being carried on two rotating carrying mechanisms in the embodiment of the present application.
[0035] Figures 1 to 7 Included:
[0036] The welding strip pressing tool 3 includes a frame 31, a supporting step 32, a step top surface 33, a pressing pin 34, a first type of pressing pin 34a, a second type of pressing pin 34b, a bottom surface 35, a light-transmitting hole 36, a soft pad 37, and a magnetic suction piece 38;
[0037] Rotating bearing mechanism 2: a rotating driving part 21 and a receiving plate 22. DETAILED DESCRIPTION
[0038] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0039] like Figure 1 to Figure 2 As shown, the solder strip pressing tool 3 in the embodiment of the present application includes a frame 31 and a plurality of rows of pressing pins 34 arranged on the frame.
[0040] Each row of pressure needles 34 includes a plurality of pressure needles 34 arranged along a straight line (such as Figure 2 A plurality of pressing pins 34 are arranged in a straight line L in the figure. The pressing pins 34 are elastically connected to the frame 31, and each row of pressing pins 34 is used to press a welding strip.
[0041] There is at least one first-type pressing needle 34a in the pressing needles 34, and the rest of the pressing needles are second-type pressing needles 34b. The pressing surface height of the first-type pressing needle 34a in a free state is lower than the pressing surface height of the second-type pressing needle 34b in a free state.
[0042] The quantity relationship between the first type of pressing needles 34a and the second type of pressing needles 34b may be that the first type of pressing needles 34a are more than, equal to, or less than the second type of pressing needles 34b.
[0043] The solder strip pressing tool 3 in the embodiment of the present application is provided with at least one relatively long first-type pressing pin 34a. Therefore, when the solder strip pressing tool 3 is lowered onto the battery cell, the first-type pressing pin 34a first contacts the corresponding solder strip on the battery cell, and as the solder strip pressing tool 3 continues to be lowered, the first-type pressing pin 34a gradually shrinks until each row of pressing pins presses the corresponding solder strip onto the battery cell.
[0044] The solder strip pressing tool 3 in the embodiment of the present application is used to press the solder strip, and the solder strip pressing tool will not produce instantaneous impact on the battery cell, thereby reducing the risk of hidden cracks in the battery cell.
[0045] According to the pressure-bearing performance of the battery cell and the maximum telescopic length of the first type of pressure pins, the height of the compression surface of the first type of pressure pins 34a in the free state is 2.1-2.9mm lower than the height of the compression surface of the second type of pressure pins 34b in the free state, thereby ensuring that each row of pressure pins can eventually effectively press the corresponding welding strip onto the battery cell and ensure that the battery cell will not be damaged by pressure. For example, the height of the compression surface of the first type of pressure pins 34a in the free state is 2.1mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 2.9mm, etc. lower than the height of the compression surface of the second type of pressure pins 34b in the free state.
[0046] Optionally, there is at least one first-type pressing pin 34a in each row of pressing pins 34. For example, there are 10 pressing pins 34 in each row, and the number of first-type pressing pins 34a in each row of pressing pins 34 can be any number from 1 to 10, but the premise is that there should be second-type pressing pins 34b on the welding strip pressing tool. Since there is at least one longer first-type pressing pin 34a in each row of pressing pins 34, when the welding strip pressing tool 3 is lowered onto the battery cell, the first-type pressing pins 34a in each row of pressing pins 34 contact a corresponding welding strip on the battery cell to implement the positioning of the corresponding welding strip and prevent the corresponding welding strip from being offset.
[0047] The first type of pressure pins 34a in each row of pressure pins are located at least one of the head end, tail end and middle part of the frame. When the welding strip pressing tool 3 is lowered onto the battery cell, the first type of pressure pins 34a located at the head end of each row of pressure pins can be used to position the head end of the welding strip, the first type of pressure pins 34a located at the tail end can be used to position the tail end of the welding strip, and the first type of pressure pins 34a located in the middle can be used to position the middle part of the welding strip to prevent the welding strip from being offset. Among them, the head end refers to the end of the welding strip pressing tool close to the welding strip traction mechanism, which is used to clamp and pull the welding strip and lay the welding strip to the specified position; the tail end refers to the end of the welding strip pressing tool away from the welding strip traction mechanism.
[0048] For example, Figure 3As shown, there are a plurality of long first-type pressing pins 34a in the middle of each row of pressing pins, and the pressing pins at the head end and the tail end are short second-type pressing pins 34b. When the welding strip pressing tool 3 is lowered onto the battery cell, the plurality of first-type pressing pins 34a located in the middle of each row of pressing pins first contact the corresponding welding strip, thereby positioning the welding strip. In addition, since the pressing pins at the head end of each row of pressing pins are short second-type pressing pins 34b, the welding strip pressing tool 3 with this structure can be lowered onto the battery cell using the first-type pressing pins 34a before the welding strip pulling mechanism releases the head end of the welding strip. The head end of the welding strip in the lifted state does not contact the second-type pressing pins 34b, so it will not be deformed by pressure and warp. After the welding strip pulling mechanism releases the head end of the welding strip, the head end of the welding strip is pressed using the second-type pressing pins 34b.
[0049] For example, Figure 4 As shown, in each row of press pins, the press pins located at the head end and the tail end are longer first-type press pins 34a, and those located in the middle are shorter second-type press pins 34b. When the solder strip pressing tool 3 is lowered onto the battery cell, the two first-type press pins 34a located at the head end and the tail end first contact the corresponding solder strips, thereby positioning the solder strips from both ends, thereby improving the positioning effect of the solder strips.
[0050] For example, Figure 5 As shown, in each row of pressure pins, there are two longer first-type pressure pins 34a at the head end, and the others are shorter second-type pressure pins 34b. When the solder strip pressing tool 3 is lowered onto the battery cell, the two first-type pressure pins 34a at the head end first contact the corresponding solder strip, thereby pre-positioning the head end of the solder strip from two positions, thereby improving the positioning effect of the solder strip.
[0051] For example, Figure 6 As shown, in each row of press pins, the press pins at the head end, tail end and middle position are longer first-type press pins 34a, and the others are shorter second-type press pins 34b. When the solder strip pressing tool 3 is lowered onto the battery cell, the three first-type press pins 34a at the head end, tail end and middle position first contact the corresponding solder strip, thereby positioning the solder strip from both ends and the middle position, improving the positioning effect of the solder strip.
[0052] Optionally, there are at least two first-type pressure pins 34a in each row of pressure pins 34, and the at least two first-type pressure pins 34a are arranged continuously or at intervals. When arranged continuously, the number of continuous first-type pressure pins 34a should be as large as possible to improve the positioning effect on the welding strip; when arranged at intervals, it is preferably arranged at uniform intervals so that the welding strip is evenly pressed to improve the positioning effect.
[0053] Optionally, there are multiple first-class pressing pins 34a on the welding ribbon pressing tool 3, and the multiple first-class pressing pins 34a are evenly arranged on the frame 31. In this way, when the welding ribbon pressing tool 3 is lowered onto the battery cell, the multiple first-class pressing pins 34a can be evenly pressed against the battery cell, and the battery cell is evenly stressed during the lowering process of the welding ribbon pressing tool 3, thereby further reducing the risk of battery cell being damaged by pressure.
[0054] like Figure 2 As shown, optionally, the pressing pin 34 is a light-transmitting pressing pin, and a plurality of light-transmitting holes 36 are provided on the frame 31, and the light-transmitting holes 36 are located between adjacent pressing pins 34, and the pressing pin 34 and the light-transmitting holes 36 each correspond to a glue point on the battery cell. When a plurality of glue points are printed on the surface of the battery cell, since the light-transmitting pressing pin and the light-transmitting holes correspond to the positions of the glue points on the battery cell, when a light source (such as infrared light, laser or UV light, etc.) irradiates the battery cell from above the solder ribbon pressing tool, the light can pass through the light-transmitting pressing pin and the light-transmitting holes to reach each glue point, so that each glue point is solidified to firmly bond the solder ribbon to the battery cell.
[0055] In some application examples, when adjacent adhesive discharge points on the battery cell are arranged in a staggered manner, correspondingly, two adjacent rows of light-transmitting holes 36 are arranged in a staggered manner, and two adjacent rows of pressing pins 34 are arranged in a staggered manner.
[0056] like Figure 7 As shown, the height of the pressing surface of each pressing pin 34 in the free state is lower than the height of the bottom surface 35 of the frame 31. By setting the height of the pressing surface of each pressing pin in the free state to be lower than the bottom surface height of the frame, each pressing pin can contact the battery cell before the frame, which can ensure that the solder strip is smoothly pressed onto the battery cell.
[0057] Optionally, the two ends of the frame 31 are respectively concave to form support steps 32. In order to further reduce the impact of the welding strip pressing tool on the battery cell, a rotating bearing mechanism 2 can be set on both sides of the conveyor belt of the battery cell conveying mechanism. Figure 7As shown, the rotating bearing mechanism 2 includes a rotating driving part 21 and a receiving plate 22. The rotating driving part 21 drives the receiving plate 22 to rotate vertically, so that the receiving plate 22 rotates and switches between a horizontal state and a released state. First, the two receiving plates 22 are rotated to a horizontal state, and then the tooling handling mechanism can place the welding strip pressing tooling on the two receiving plates 22. The two receiving plates 22 extend under the supporting steps 32 to receive the two ends of the frame 31 of the welding strip pressing tooling 3. At this time, the bottom surface of the frame 31 is higher than the conveying surface of the battery cell conveying mechanism. The first type of pressing needle 34a contacts the welding strip, and the second type of pressing needle 34b does not contact the welding strip. Next, the rotating driving unit 21 drives the receiving plate 22 to rotate downward, driving the solder strip clamping tool 3 to slowly descend, so that the bottom surface of the frame 31 falls on the conveying surface of the conveyor belt. At this time, all the pressing pins 34 clamp the solder strips. Finally, when the two receiving plates 22 rotate downward to the release state, they are separated from the supporting steps 32 of the solder strip clamping tool 3, and the battery cell conveying mechanism can convey the battery cell, solder strip and solder strip clamping tool to the back channel. By rotating the bearing mechanism 2 to hold the solder strip clamping tool and slowly lowering the solder strip clamping tool, the impact of the solder strip clamping tool on the battery cell can be further reduced.
[0058] Continue to refer Figure 1 As shown, optionally, magnetic suction members 38 are provided at both ends of the frame 31. The magnetic suction members 38 facilitate the tooling transport mechanism to absorb and transport the solder ribbon pressing tooling 3, and can make the solder ribbon pressing tooling 3 be adsorbed and positioned on the supporting surface of the battery cell (i.e., the conveyor belt of the battery cell conveying mechanism), ensuring that each row of pressure needles 34 on the solder ribbon pressing tooling 3 implements continuous and stable compression of the corresponding solder ribbon, and prevents the solder ribbon from being offset.
[0059] Optionally, the top and bottom surfaces of both ends of the frame 31 are provided with magnetic suction members 38. The magnetic suction members on the top surface cooperate with the tooling handling mechanism to absorb and carry the solder ribbon pressing tooling 3. The magnetic suction members on the bottom surface can ensure that the solder ribbon pressing tooling 3 is adsorbed and positioned on the supporting surface of the battery cell.
[0060] Optionally, soft pads 37 are provided on the bottom surfaces at both ends of the frame 31. By providing soft pads 37 on the bottom surfaces at both ends of the frame 31, the friction between the bottom surfaces at both ends of the frame and the supporting surface of the battery sheet can be reduced, thereby extending the service life of the conveyor belt.
[0061] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.
Claims
1. A welding strip pressing tool, characterized in that: The welding strip pressing tool comprises: frame; A plurality of rows of pressure pins are arranged on the frame, each row of pressure pins comprises a plurality of pressure pins arranged along a straight line, the pressure pins are elastically connected to the frame, and each row of pressure pins is used to press a welding strip; There is at least one first-type pressing pin among the pressing pins, and the rest of the pressing pins are second-type pressing pins. The pressing surface height of the first-type pressing pins in a free state is lower than the pressing surface height of the second-type pressing pins in a free state.
2. The welding strip pressing tool as claimed in claim 1, characterized in that: The height of the pressing surface of the first type of pressing pins in a free state is 2.1-2.9 mm lower than the height of the pressing surface of the second type of pressing pins in a free state.
3. The welding strip pressing tool as claimed in claim 1, characterized in that: There is at least one first-type pressing needle in each row of pressing needles.
4. The welding strip pressing tool as claimed in claim 3, characterized in that: The first type of pressing needles in each row of pressing needles are located at at least one of the head end, the tail end and the middle part of the frame.
5. The welding strip pressing tool as claimed in claim 3, characterized in that: There are at least two first-type pressing needles in each row of pressing needles, and at least two first-type pressing needles are arranged continuously or at intervals.
6. The welding strip pressing tool as claimed in claim 1, characterized in that: There are a plurality of the first-type pressing needles among the pressing needles, and the plurality of the first-type pressing needles are evenly arranged on the frame.
7. The welding strip pressing tool as claimed in claim 1, characterized in that: The pressing pin is a light-transmitting pressing pin, and a plurality of light-transmitting holes are arranged on the frame. The light-transmitting holes are located between adjacent pressing pins, and the pressing pin and the light-transmitting hole both correspond to a glue point on the battery cell.
8. The welding strip pressing tool as claimed in claim 7, characterized in that: The light-transmitting holes in two adjacent rows are staggered, and the pressure pins in two adjacent rows are staggered.
9. The welding strip pressing tool as claimed in claim 1, characterized in that: The pressing surface height of each pressing pin in a free state is lower than the bottom surface height of the frame; The lower parts of both ends of the frame are respectively concave to form support steps.
10. The welding strip pressing tool as claimed in claim 1, characterized in that: Magnetic suction parts are respectively arranged at two ends of the frame, and soft pads are respectively arranged on the bottom surfaces of two ends of the frame.