A battery cell welding strip processing apparatus and method

Abstract

This application relates to the field of photovoltaic cells, and in particular to a cell welding strip processing apparatus and method, comprising: a first carrier for supporting cell wafers; a second carrier located below the first carrier, the second carrier having a bearing surface for supporting welding strips, the second carrier having: a first group of holes, comprising multiple groups of first holes arranged side-by-side along the length of the second carrier, each first group of holes including a plurality of first holes having adsorption and air blowing functions, the first holes being used to cooperate with the welding strip adsorption or air blowing; and a second group of holes, comprising a plurality of second holes having adsorption functions, the second holes being used to adsorb and cooperate with the cell wafers, thereby forming a plurality of cell wafer workstations on the bearing surface. This achieves the technical effect of improving the welding quality of the cell welding strips.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cells, and in particular to a cell welding strip processing apparatus and method. Background Technology

[0002] With the development of photovoltaic technology, in order to improve the power conversion efficiency of solar cells, multiple solar cells are stacked together and welded together with solder strips to form a solar cell string. Therefore, in order to meet the above process requirements, welding equipment for welding solar cells to form solar cell strings has been developed.

[0003] In existing technologies, solar cells are interconnected via welding ribbons. First, welding ribbons need to be welded onto the flat solar cells. Therefore, the welding ribbons need to be placed on the surface of the solar cells and then heated and cured to complete the welding between the ribbons and the solar cells. The welding ribbon welding process includes pulling the ribbon, cutting the ribbon, transferring the ribbon, arranging and placing the ribbon, and welding the ribbon. However, the ribbon itself is flexible and has a small diameter. After cutting, the ribbon is transferred and arranged using a robotic arm. Therefore, the robotic arm that grips the ribbon needs to have multiple gripping structures to hold multiple sets of ribbons, resulting in a bulky and complex welding equipment structure and increased cost. Furthermore, a method has been proposed that attaches the welding ribbon and solar cells to a carrier, such as the patent application with application number 202211546400.3. This method involves welding each solar cell individually by driving the carrier to rotate. However, the wrapped ribbon is prone to deformation and bending, resulting in poor contact between the ribbon and the solar cell, thus causing incomplete welds during the welding process.

[0004] Therefore, the technical problem with the existing technology is that the welding quality of the battery cell strips is poor. Summary of the Invention

[0005] This application provides a battery cell welding strip processing apparatus and method, which solves the technical problem of poor welding quality of battery cell welding strips and achieves the technical effect of improving the welding quality of battery cell welding strips.

[0006] On the one hand, the battery cell welding strip processing apparatus provided in this application adopts the following technical solution:

[0007] A battery cell welding strip processing apparatus includes: a first carrier for carrying battery cells; a second carrier located below the first carrier, the second carrier having a bearing surface for carrying welding strips, the second carrier having: a first group of holes, the first group of holes having multiple groups arranged side-by-side along the length of the second carrier, each first group of holes including a plurality of first holes, the first holes having adsorption and air blowing functions, the first holes being used to cooperate with the welding strip adsorption or air blowing; and a second group of holes, the second group of holes including a plurality of second holes, the second holes having adsorption functions, the second holes being used to adsorb and cooperate with the battery cells, thereby forming a plurality of battery cell workstations on the bearing surface.

[0008] Preferably, the bearing surface is provided with a plurality of first grooves arranged in parallel, the first grooves being used to accommodate the welding strip; the first hole group is provided inside the first groove, and the second hole group is provided outside the first groove.

[0009] Preferably, the second carrier further comprises: a second groove disposed between every two of the battery cell stations, the second groove being perpendicular or substantially perpendicular to the direction of the welding strip arrangement; an ejector, the ejector being housed inside the second groove; and a third hole group comprising a plurality of third holes, the third holes having an air-blowing function, the third holes being used to cooperate with the ejector in air-blowing, so that the ejector is pushed upward.

[0010] Preferably, the depth of the second groove is greater than the depth of the first groove, and the top of the ejector is lower than the bearing surface, or the top of the ejector is lower than the bottom surface of the first groove.

[0011] Preferably, the side of the second groove has a guide ramp, so that the ejector can fall into the second groove along the guide ramp.

[0012] Preferably, the length of the second groove and the ejector is greater than or substantially greater than the width of the welding strip.

[0013] Preferably, the first carrier has a rotational degree of freedom to rotate about an axis, and the first carrier has a circumferential side surface for supporting the battery cell.

[0014] Preferably, the first carrier is in the shape of a roller, and the peripheral side of the first carrier has a plurality of operating surfaces, the operating surfaces having an adsorption function, and the operating surfaces being used to adsorb battery cells.

[0015] Secondly, the technical solution provided in this application is as follows:

[0016] A method for processing solar cell welding strips includes: placing welding strips in a first groove, with each welding strip corresponding to a different groove; creating a negative pressure in a first set of holes to fix the welding strips; placing solar cells on a second carrier on a first carrier, creating a negative pressure in a second set of holes to fix the solar cells; inflating the first set of holes to bring the welding strips into contact with the solar cells; inflating a third set of holes to push an ejector upwards under the force of the inflated air, the ejector acting on the welding strips to bring the welding strips into close contact with the edges of the solar cells; and heating the solar cells and welding strips to weld the solar cells to the welding strips.

[0017] Preferably, the solder strip located between the adjacent battery cells is cut to break the solder strip and form a battery cell with solder strip.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. In this application, the battery is carried on the first carrier and the welding strip is carried on the second carrier. The welding strip is kept in a straight state on the second carrier and is fixed by adsorption through the first hole group. It is not necessary to wind or bend the welding strip, which reduces the problem of poor welding between the welding strip and the battery cell caused by the deformation of the welding strip. The battery cell is placed on the welding strip / second carrier on the first carrier and fixed by adsorption through the second hole group. At the same time, the welding strip is floated by the air of the first hole group and makes full contact with the battery cell, which reduces the possibility of poor welding between the welding strip and the battery cell and improves the welding quality of the battery cell welding strip.

[0020] 2. This application also sets up a second groove, an ejector, and a third hole group between the battery cell stations. The third hole group can push the ejector upward by blowing air. The ejector acts on the welding strip, so that the welding strip and the battery cell are in closer contact and fit. The welding strip and the edge of the battery cell are also in close contact, which improves the contact degree between the welding strip and the battery cell, reduces the incomplete welding between the welding strip and the battery cell during the heating welding stage, and further improves the welding quality of the battery cell welding strip. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the processing apparatus described in this application;

[0022] Figure 2 This is a schematic diagram of the first carrier of the processing apparatus described in this application;

[0023] Figure 3 This is a schematic diagram of the second carrier of the processing apparatus described in this application;

[0024] Figure 4 This is an enlarged view of the second carrier of the processing apparatus described in this application;

[0025] Figure 5 This is a top view of the first and second hole groups of the second carrier in the processing apparatus described in this application;

[0026] Figure 6 This is a side view of the first and second hole groups of the second carrier in the processing apparatus described in this application;

[0027] Figure 7 This is a schematic diagram of the third hole group of the second carrier in the processing apparatus described in this application;

[0028] Figure 8 This is a side view of the third hole group of the second carrier in the processing apparatus described in this application.

[0029] Explanation of reference numerals in the attached drawings: 100, first carrier; 110, operating surface; 200, second carrier; 210, bearing surface; 220, cell station; 230, first hole group; 231, first hole; 240, second hole group; 241, second hole; 250, third hole group; 251, third hole; 260, first groove; 270, second groove; 271, guide slope; 280, ejector; 300, cell; 400, welding strip. Detailed Implementation

[0030] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] This application provides a battery cell welding strip processing apparatus and method, which solves the technical problem of poor welding quality of battery cell welding strips and achieves the technical effect of improving the welding quality of battery cell welding strips.

[0033] To better understand the above technical solutions, a detailed description of the technical solutions will be provided below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.

[0034] To achieve shingled production of solar cells, welding strips need to be welded onto the cells. Therefore, welding equipment for welding strips, or auxiliary equipment to assist in welding strips, has emerged. Current mainstream welding strip placement technologies consist of the following steps: pulling the welding strip, cutting the welding strip, transferring the welding strip, arranging and placing the welding strip, and welding the welding strip. For example, Ningxia Xiaoniu Automation Equipment Co., Ltd. designed an automatic welding strip placement device and string welding machine. The automatic welding strip placement device includes a welding strip cutting device, a welding strip placement device, a welding table, and a traction table. The welding strip placement device utilizes a gripping and placing mechanism that can move perpendicular to the direction of the welding strip line for translational and staggered movement. A cutting mechanism is used to cut the entire welding strip into multiple segments to achieve accurate arrangement of the welding strip on the cell grid lines. Zhongnengchuang Optoelectronic Technology (Changzhou) Co., Ltd. proposed a multi-busbar series device and a cell string series method for multiple wiring. The multi-busbar series device includes a series worktable and a main busbar wiring mechanism. The main busbar wiring mechanism is used to wire the main busbar in a first direction. It also includes a movable wiring preparation table, an auxiliary wire wiring mechanism and an auxiliary wire connection mechanism. The movable wiring preparation table can move along a second direction perpendicular to the first direction under the drive of the drive mechanism. Multiple wiring is achieved by moving the movable wiring preparation table.

[0035] The above equipment and methods are all used for welding of solar cell strips. The problems with this process are: 1. The strip wiring mechanism has poor scalability and cannot meet the increasing demand for multi-wire strips; 2. For multi-gate solar cell strips, the existing strip feeding technology requires a corresponding number of strip feeding carriers, which not only makes strip replacement difficult, but also occupies a lot of equipment space and is costly.

[0036] Therefore, this application addresses the shortcomings of existing technologies by proposing a patent application that solves the aforementioned problems. The application number is 202211546400.3, and the patent title is "A Simple and Efficient Welding Strip Carrier, Welding Strip Carrier Assembly, Welding Equipment, and Welding Method." This patent relates to the field of photovoltaic technology, and particularly to a welding strip carrier, welding strip carrier assembly, welding equipment, and welding method. The carrier includes: a carrier body for winding welding strip, the carrier body having rotational freedom, at least one operating surface on the carrier body, the operating surface being planar, the welding strip being laid across the operating surface, and several adsorption holes formed on the operating surface. The welding strip is adsorbed and fixed by creating negative pressure within the adsorption holes. This solves the technical problem of complex welding equipment structures in existing technologies, achieving the technical effect of simplifying the structure of welding equipment.

[0037] However, the aforementioned patents, by winding the welding strip around the carrier body and binding and tightening the solar cells, suffer from poor contact between the welding strip and the solar cells due to the deformation caused by the metal support and the resulting deformation. This easily leads to incomplete welds, reducing solar cell quality and power generation efficiency. Through numerous experiments, the applicant has demonstrated that the likelihood of incomplete welds caused by a linear welding strip layout is significantly lower than that caused by a coiled welding strip layout. Therefore, this application provides an alternative solar cell welding strip processing apparatus and method, solving the technical problem of poor welding quality and achieving the technical effect of improving the welding quality of solar cell welding strips.

[0038] A battery cell welding strip processing apparatus is used for processing battery cells 300 and welding strips 400, such as... Figure 1 As shown, it includes a first carrier 100 and a second carrier 200. The first carrier 100 is used to carry the battery cell 300; the second carrier 200 is used to carry the welding ribbon 400. The battery cell 300 is transferred from the first carrier 100 to the second carrier 200, so that the battery cell 300 falls onto the second carrier 200 and comes into contact with the welding ribbon 400 located on the second carrier 200. After heating, the welding of the battery cell 300 and the welding ribbon 400 is completed.

[0039] First carrier 100, such as Figure 1 , 2 As shown, the first carrier 100 is used to support the battery cell 300. The first carrier 100 has a rotational degree of freedom to rotate around an axis, so that the battery cell 300 can be transferred to the second carrier 200 by rotation adjustment. The first carrier 100 has a circumferential side surface, which refers to the annular side surface on the first carrier 100 that can rotate around the rotation center. The circumferential side surface is used to support the battery cell 300. The circumferential side surface fixes multiple battery cells 300 by negative pressure adsorption in multiple areas. When it is necessary to transfer the battery cell 300 to the second carrier 200, the negative pressure area on the corresponding battery cell 300 is removed.

[0040] In one embodiment, such as Figure 2 As shown, the first carrier 100 is in the form of a roller, and the side of the roller is the aforementioned circumferential side. The circumferential side has several operating surfaces 110, and each operating surface 110 is provided with an independent negative pressure adsorption structure. By controlling the negative pressure of each operating surface 110, the adsorption and release of the battery cell 300 on each operating surface 110 can be realized. Thus, the first carrier 100 is first driven to rotate, and the battery cell 300 is sequentially adsorbed onto each operating surface 110 on the circumferential side. Then, the first carrier 100 is driven to move along the second carrier 200 and rotate, and the negative pressure on the operating surfaces 110 is sequentially removed, so that the battery cell 300 is sequentially transferred to the battery cell station 220 of the second carrier 200, thereby completing the placement of the battery cell 300.

[0041] The second carrier 200, such as Figure 3 , 4 As shown, the second carrier 200 is used to carry the solder ribbon 400. The second carrier 200 is disposed below the first carrier 100, so that the first carrier 100 can transfer the battery cell 300 downward onto the second carrier 200. The second carrier 200 has a bearing surface 210, which is used to carry the solder ribbon 400. At the same time, after the solder ribbon 400 is placed, the bearing surface 210 is also used to carry the battery cell 300. The second carrier 200 has a bearing surface 210 with a first hole group 230, a second hole group 240, a first groove 260, a second groove 270, and a third hole group 250. The first hole group 230 is used to adhere to or vent the welding ribbon 400. The second hole group 240 is used to adhere to the battery cell 300 to fix the battery cell 300. The first groove 260 is provided on the bearing surface 210 and is used to accommodate the welding ribbon 400. The second groove 270 is provided on the bearing surface 210 and is used to make the welding ribbon 400 contact the edge of the battery cell 300. The third hole group 250 is used to drive the welding ribbon 400 to the top.

[0042] First hole group 230, such as Figure 5 , 6 As shown, the first hole group 230 is used to cooperate with the welding ribbon 400 for adsorption or air blowing. The first hole group 230 is disposed on the bearing surface 210 of the second carrier 200, and the first hole group 230 is arranged in parallel along the length direction of the second carrier 200, that is, it is used to adsorb and fix the long straight welding ribbon 400, so that the long straight welding ribbon 400 can be fixed on the bearing surface 210 by the negative pressure adsorption of the first hole group 230; wherein, there are multiple first hole groups 230, and multiple first hole groups 230 are arranged in parallel along the length direction of the second carrier 200, so that the bearing surface 210 of the second carrier 200 can fix multiple long straight welding ribbons 400. In one arrangement, the first hole group 230 is arranged in parallel along the length direction of the second carrier 200, so that the bearing surface 210 of the second carrier 200 can fix multiple long straight welding ribbons 400. The number of weld ribbons 400 in a group 230 is between 50 and 150. Specifically, each group 230 includes several first holes 231. The first holes 231 have adsorption and air blowing functions. The first holes 231 are used to work with the weld ribbons 400 for adsorption or air blowing. It can be understood that a first cavity is provided in the second carrier 200 at the position corresponding to the first hole 231. The first hole 231 is connected to the first cavity. By drawing negative pressure or blowing air into the first cavity, the adsorption and air blowing of each first hole 231 can be achieved, so that the weld ribbons 400 are adsorbed and fixed on the bearing surface 210 or float.

[0043] Second hole group 240, such as Figure 5 , 6As shown, the second hole group 240 is used to adsorb and cooperate with the battery cell 300 to fix the battery cell 300. The second hole group 240 is disposed on the bearing surface 210 of the second carrier 200. The second hole group 240 and the first hole group 230 are disposed independently and do not interfere with each other. In other words, the second hole group 240 is disposed in a position other than the first hole group 230. In one embodiment, the second hole group 240 is randomly distributed on the bearing surface 210 other than the first hole group 230; in another embodiment, the second hole group 240 is uniformly distributed on the bearing surface 210 other than the first hole group 230; in other embodiments, the first hole group 230 and the second hole group 240 are disposed in a position other than the first hole group 230. The distribution of 0 holes is alternating. Specifically, each group of second holes 240 includes a second hole 241, which has an adsorption function (and may also have an air blowing function). The second hole 241 is used to adsorb and cooperate with the battery cell 300. It can be understood that a second cavity is provided in the second carrier 200 at the position corresponding to the second hole 241. The second hole 241 is connected to the second cavity. By drawing negative pressure into the second cavity, the adsorption of each second hole 241 can be achieved, so that the battery cell 300 is adsorbed and fixed on the bearing surface 210, thereby forming several battery cell workstations 220.

[0044] The first slot is 260, as shown below. Figure 5 , 6 As shown, a first groove 260 is disposed on the bearing surface 210 and is used to accommodate the welding strip 400. The first groove 260 is disposed on the bearing surface 210 of the second carrier 200, and the first grooves 260 are arranged in parallel along the length direction of the second carrier 200, that is, parallel to the arrangement direction of the first hole group 230; wherein, there are multiple groups of first grooves 260, the number of first grooves 260 is the same as the number of first hole groups 230, and the first hole groups 230 are located in the first grooves 260 one-to-one, so that the welding strip 400 is accommodated in the first grooves 260 and is adsorbed and fixed by the first hole groups 230. In other words, the first groove 260 is formed on the bearing surface 210 of the second carrier 200, the first hole group 230 is disposed inside the first groove 260, and the second hole group 240 is disposed outside the first groove 260. In one embodiment, the first hole group 230 (first groove 260) and the second hole group 240 are alternately distributed. In this way, the solder ribbon 400 is embedded and stably adsorbed and fixed in the first groove 260 through the first hole group 230, and the battery cell 300 is adsorbed and fixed on the bearing surface 210 through the second hole group 240.

[0045] The second slot is 270, as shown. Figure 7 , 8As shown, a second groove 270 is disposed on the bearing surface 210 for contacting the edge of the welding strip 400 with the edge of the battery cell 300. The second groove 270 is formed on the bearing surface 210 of the second carrier 200, located between each pair of adjacent battery cell stations 220. The direction of the second groove 270 is parallel or substantially parallel to the length direction of the second carrier 200; in other words, the direction of the second groove 270 is perpendicular or substantially perpendicular to the direction of the welding strip 400. Furthermore, an ejector 280 is disposed inside the second groove 270. The ejector 280 is housed within the second groove 270 and is movable relative to the second groove 270, meaning that the ejector 280 can be ejected upwards or fall into the second groove 270 under external force.

[0046] The third hole group is 250, such as Figure 7 , 8 As shown, the third hole group 250 is used to drive the ejector 280 and the welding ribbon 400 to the top. The third hole group 250 is provided on the bottom surface of the second groove 270. The third hole group 250 includes several third holes 251. The third holes 251 have an air blowing function (and may also have an adsorption function). The third holes 251 are used to cooperate with the air blowing of the ejector 280. It can be understood that the second carrier 200 at the corresponding position of the third hole 251 is provided with a third cavity. The third hole 251 is connected to the third cavity. By blowing air into the third cavity, air can be blown into each third hole 251. When the air blowing of the third hole 251 acts on the ejector 280, the ejector 280 floats up and acts on the welding ribbon 400, so that the welding ribbon 400 is in close contact with the battery cell 300. In particular, the contact effect between the edge of the battery cell 300 and the welding ribbon 400 is improved, reducing the poor welding between the welding ribbon 400 and the edge of the battery cell 300. Furthermore, the lengths of the second groove 270 and the ejector 280 are greater than or substantially greater than the width of the welding strip 400. The width of the welding strip 400 refers to the width of the arrangement of the welding strip 400, which is perpendicular to the length direction of the welding strip 400. In this way, the ejector 280 can be pushed up by the air blowing action of the third hole group 250 to act on all the welding strips 400, which is conducive to the tight contact between all the welding strips 400 and the edge of the battery cell 300, thereby improving the welding quality of the battery cell 300.

[0047] It is worth noting that the cavities corresponding to the first pore group 230, the second pore group 240, and the third pore group 250 are relatively independent, allowing the first pore group 230, the second pore group 240, and the third pore group 250 to independently adsorb or blow air.

[0048] Furthermore, such as Figure 7 , 8 As shown ( Figure 7(The ejector component is not shown in the figure). The depth of the second groove 270 is greater than the depth of the first groove 260, and the top of the ejector component 280 is lower than the bearing surface 210. Thus, when the ejector component 280 is located in the second groove 270, the entire ejector component 280 is located inside the second groove 270. In one embodiment, the top of the ejector component 280 may also be lower than the bottom surface of the first groove 260, so that the top surface of the ejector component 280 does not contact the welding strip 400. Furthermore, a guide ramp 271 is provided on the side of the second groove 270 along its length. The guide ramp 271 is used to guide the ejector component 280 when it falls, so that the ejector component 280 falls accurately into the second groove 270. The cross-section of the second groove 270 and the cross-section of the ejector component 280 may also be set to the same shape.

[0049] Based on the aforementioned battery cell 300 welding strip 400 processing apparatus, this application also provides a battery cell welding strip processing method, such as... Figure 1-8 As shown, it includes:

[0050] The long, straight welding strip 400 is placed in the first groove 260, and the welding strip 400 and the first groove 260 are matched one-to-one. In other words, the welding strip 400 is arranged one-to-one into the first groove 260, so that the welding strip 400 is arranged on the second carrier 200.

[0051] A negative pressure is formed in the first hole group 230 to adsorb and fix the welding strip 400 inside the first groove 260;

[0052] The first carrier 100 is driven to rotate, and the battery cells 300 are sequentially adsorbed onto each operating surface 110 on the peripheral side. Then, the first carrier 100 is driven to move along the second carrier 200 and rotate. The negative pressure on the operating surface 110 is sequentially removed, so that the battery cells 300 are sequentially transferred to the battery cell station 220 of the second carrier 200, thereby completing the placement of the battery cells 300. At the same time, a negative pressure is formed in the second hole group 240, so that the battery cells 300 are adsorbed and fixed on the battery cell station 220 of the second carrier 200.

[0053] Air is blown into the first hole group 230, and the blown air acts on the welding strip 400, so that the top of the welding strip 400 is in close contact with the battery cell 300.

[0054] Air is blown into the third hole group 250, and the blown air acts on the ejector 280. The ejector 280 acts on the welding strip 400, causing the welding strip 400 to be pushed further upward. The part of the welding strip 400 lifted by the ejector 280 is more raised than the part of the welding strip 400 that is not lifted by the ejector 280. That is, the part of the welding strip 400 lifted by the ejector 280 is higher than the bearing surface 210, so that the welding strip 400 and the edge of the battery cell 300 are in stable and tight contact, avoiding the problem of poor welding caused by poor contact between the welding strip 400 and the battery cell 300.

[0055] Next, the battery cell 300 and the welding ribbon 400 are heated and welded together to make the welding ribbon 400 and the battery cell 300 welded together.

[0056] The solder strip 400 between adjacent battery cells 300 is then cut to break the solder strip 400 between the two battery cells 300, forming a single battery cell 300 with solder strip 400.

[0057] Working principle / steps:

[0058] A long, straight welding ribbon 400 is placed in the first groove 260, and a negative pressure is formed in the first hole group 230 to adsorb and fix the welding ribbon 400 inside the first groove 260. The first carrier 100 is driven to rotate, and the battery cell 300 is sequentially adsorbed onto each operating surface 110 on the peripheral side. Then, the first carrier 100 is driven to move along the second carrier 200 and rotate. The negative pressure on the operating surface 110 is sequentially removed, so that the battery cell 300 is sequentially transferred to the battery cell station of the second carrier 200. On 220, the battery cell 300 is laid out; air is blown in the first hole group 230, and the blown air acts on the welding ribbon 400, so that the welding ribbon 400 is in close contact with the battery cell 300; air is blown in the third hole group 250, and the blown air acts on the ejector 280, and the ejector 280 acts on the welding ribbon 400; the battery cell 300 and the welding ribbon 400 are heated and welded; then the welding ribbon 400 between adjacent battery cells 300 is cut to obtain a battery cell 300 with welding ribbon 400.

[0059] Technical effects:

[0060] 1. In this application, the battery is supported on the first carrier 100 and the welding ribbon 400 is supported on the second carrier 200. The welding ribbon 400 is kept straight on the second carrier 200 and is fixed by adsorption through the first hole group 230. It is not necessary to roll or bend the welding ribbon 400, which reduces the deformation of the welding ribbon 400 and causes the welding ribbon 400 to be poorly welded to the battery cell 300. The first carrier 100 arranges the battery cell 300 on the welding ribbon 400 / second carrier 200 and fixes the battery cell 300 by adsorption through the second hole group 240. At the same time, the welding ribbon 400 is floated by the first hole group 230 and makes full contact with the battery cell 300, which reduces the possibility of poor welding between the welding ribbon 400 and the battery cell 300 and improves the welding quality of the welding ribbon 400 to the battery cell 300.

[0061] 2. This application also provides a second groove 270, an ejector 280, and a third hole group 250 between the cell station 220. The third hole group 250 can push the ejector 280 upward by blowing air. The ejector 280 acts on the welding strip 400, so that the welding strip 400 and the cell 300 are in closer contact and fit. The edges of the welding strip 400 and the cell 300 are also in close contact, which improves the degree of contact between the welding strip 400 and the cell 300, reduces the possibility of false welding between the welding strip 400 and the cell 300 during the heating welding stage, and further improves the welding quality of the welding strip 400 and the cell 300.

[0062] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0063] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A battery cell welding strip processing device, characterized in that, include: The first carrier (100) is used to carry the battery cell (300). A second carrier (200) is located below the first carrier (100). The second carrier (200) has a bearing surface (210) for bearing the solder strip (400). The second carrier (200) has the following features: The first hole group (230) has multiple groups, and the first hole group (230) is arranged in parallel along the length direction of the second carrier (200). Each first hole group includes a plurality of first holes (231). The first holes (231) have adsorption and air blowing functions. The first holes (231) are used to cooperate with the welding strip (400) for adsorption or air blowing. The second hole group (240) includes a plurality of second holes (241), the second holes (241) having an adsorption function, the second holes (241) being used to adsorb and cooperate with the battery cell (300), so that a plurality of battery cell stations (220) are formed on the bearing surface (210). The second carrier (200) also has: The second groove (270) is disposed between every two of the battery cell stations (220), and the opening direction of the second groove (270) is perpendicular to the arrangement direction of the welding strip (400); Ejector (280), the ejector (280) being received inside the second groove (270); as well as The third hole group (250) includes several third holes (251), each third hole (251) having an air-blowing function. The third holes (251) are used to cooperate with the ejector (280) in air-blowing, so that the ejector (280) is pushed up.

2. The battery cell welding strip processing apparatus according to claim 1, characterized in that, The bearing surface (210) is provided with a plurality of first grooves (260) arranged in parallel, the first grooves (260) being used to accommodate the welding strip (400); the first hole group (230) is provided in the first groove (260), and the second hole group (240) is provided outside the first groove (260).

3. The battery cell welding strip processing apparatus according to claim 2, characterized in that, The depth of the second groove (270) is greater than the depth of the first groove (260), and the top of the ejector (280) is lower than the bearing surface (210), or the top of the ejector (280) is lower than the bottom surface of the first groove (260).

4. The battery cell welding strip processing apparatus according to claim 1, characterized in that, The second groove (270) has a guide ramp (271) on its side, so that the ejector (280) can fall into the second groove (270) along the guide ramp (271).

5. The battery cell welding strip processing apparatus according to claim 1, characterized in that, The lengths of the second groove (270) and the ejector (280) are greater than the width of the weld strip (400).

6. The battery cell welding strip processing apparatus according to claim 1, characterized in that, The first carrier (100) has rotational freedom about an axis and has a circumferential side surface for supporting the battery cell (300).

7. The battery cell welding strip processing apparatus according to claim 6, characterized in that, The first carrier (100) is in the shape of a roller, and the peripheral side of the first carrier (100) has a plurality of operating surfaces (110). The operating surfaces (110) have an adsorption function and are used to adsorb the battery cells (300).

8. A processing method applied to the battery cell welding strip processing apparatus as described in claim 1, characterized in that, include: The welding strip (400) is placed in the first groove (260), and the welding strip (400) and the first groove (260) are matched one by one; A negative pressure is created in the first hole group (230) to fix the welding strip (400); The first carrier (100) places the battery cell (300) on the second carrier (200) to create a negative pressure in the second hole group (240) to fix the battery cell (300). The first hole group (230) is vented to make the solder strip (400) contact the battery cell (300); The third hole group (250) is vented, causing the ejector (280) to be pushed up by the venting action. The ejector (280) acts on the welding strip (400), making the welding strip (400) in close contact with the edge of the battery cell (300). Heat the battery cell (300) and the welding strip (400) to weld the battery cell (300) to the welding strip (400).

9. The processing method according to claim 8, characterized in that, Cut the solder strip (400) located between adjacent battery cells (300) to break the solder strip (400) and form a battery cell (300) with solder strip (400).

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