A battery processing apparatus

Abstract

The application relates to the photovoltaic technical field, in particular to a cell processing device for welding a cell sheet and a welding strip located on the cell sheet, which comprises a carrier assembly, the carrier assembly comprising a carrier, the carrier having a bearing surface for bearing the cell sheet, the bearing surface having an adsorption function so that the cell sheet located on the bearing surface can be fixed by adsorption; a compression roller assembly located directly above the carrier assembly, the compression roller assembly comprising a base, a compression roller, the compression roller being cylindrically arranged and having heat conduction capacity and / or self-heating capacity, the compression roller being rotationally connected to the base and having the activity freedom of rotating around the shaft; wherein the position of the compression roller assembly is fixed, and the compression roller assembly forms a welding space; the carrier has the movement freedom, so that when the carrier passes through the welding space, the compression roller can roll and press on the cell to weld the cell and the welding strip. Through the roll and press welding of the cell sheet by the compression roller, the technical effect of improving the quality of the cell sheet is achieved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a battery processing apparatus. Background Technology

[0002] In the manufacturing process of photovoltaic cells, cell welding is a crucial step in the cell string production process. This step requires precise control of temperature, pressure, and welding speed. It is necessary to ensure that the solder ribbon is tightly bonded to the cell grid lines to reduce contact resistance, while also preventing high temperatures or external forces from causing microcracks in the silicon wafer or grid line detachment.

[0003] In existing technologies, infrared welding is often used for battery welding. Infrared welding is a non-contact welding method that uses infrared radiation to weld the battery cell and the solder strip to the battery cell. However, it has been found in the production process that infrared welding can easily cause poor soldering of the battery cell, which reduces the quality of the battery cell.

[0004] Therefore, the technical problem with existing technology is that the quality of the solar cells is low. Utility Model Content

[0005] This application provides a battery processing apparatus that improves the quality of battery cells by rolling and welding them with pressure rollers.

[0006] This application provides a battery processing apparatus, which adopts the following technical solution: A battery processing apparatus for welding battery cells and welding strips on the battery cells includes: a carrier assembly, the carrier assembly comprising: a carrier having a bearing surface for bearing the battery cells, the bearing surface having an adsorption function to fix the battery cells on the bearing surface by adsorption; and a pressure roller assembly located directly above the carrier assembly, the pressure roller assembly comprising: a base; and a pressure roller, the pressure roller being cylindrical and having thermal conductivity and / or self-heating capability, the pressure roller being rotatably connected to the base and having a degree of freedom of rotation about an axis; wherein the position of the pressure roller assembly is fixed, the pressure roller assembly forming a welding space; and the carrier having a degree of freedom of movement such that when the carrier passes through the welding space, the pressure roller can roll over the battery to weld the battery and the welding strip.

[0007] Preferably, the bearing surface is planar.

[0008] Preferably, the bearing surface has a plurality of adsorption zones, each of which has an independent adsorption capacity to adsorb one battery cell.

[0009] Preferably, the carrier moves in a straight line perpendicular to the axis of the pressure roller.

[0010] Preferably, the carrier assembly further includes: a carrier base slidably connected to the carrier; and a first driving member connected to drive the carrier to slide.

[0011] Preferably, the first driving component includes: a rack fixedly connected to the carrier; a gear rotatably connected to the carrier seat and used to mesh with the rack; and a first motor connected to the carrier seat and used to drive the gear to rotate so as to cause the carrier to slide on the carrier seat.

[0012] Preferably, a slide rail and a slider are provided between the carrier and the carrier base; wherein the slide rail is fixedly connected to the carrier base, the slider is fixedly connected to the carrier, and the slide rail and the slider slide in cooperation; or, the slide rail is fixedly connected to the carrier, the slider is fixedly connected to the carrier base, and the slide rail and the slider slide in cooperation.

[0013] Preferably, the carrier base has a first surface located on the top surface of the carrier base; the carrier has a second surface located on the bottom surface of the carrier; the first surface and the second surface are disposed opposite to each other, and the slide rail and the slider are located between the first surface and the second surface.

[0014] Preferably, the carrier base has a third surface located on the side of the carrier base; the carrier has a fourth surface located on the side of the carrier; the third surface and the fourth surface are arranged opposite to each other, and the slide rail and the slider are located between the third surface and the fourth surface.

[0015] Preferably, the carrier holder includes: a first seat, two of which are arranged opposite each other and in a fixed position; and a second seat, two of which are respectively arranged on both sides of the first seat. The second seat can move between the two first seats to have a first state and a second state: in the first state, the second seat is engaged with the end of the first seat so that the carrier can slide from the first seat to the second seat or slide from the second seat to the first seat; in the second state, the second seat moves from one of the first seats to the other first seat.

[0016] Preferably, in the first state, a gap is formed between the first seat and the second seat, the length of which is less than the length of the carrier, so that the carrier can slide across the gap from the first seat to the second seat or from the second seat to the first seat.

[0017] Preferably, the second seat is provided with a linear drive so that the second seat can slide linearly between the two first seats.

[0018] Preferably, the pressure roller assembly is located on the side of the first seat so that the pressure roller assembly can perform roll welding on the battery cells carried by the carrier on the first seat.

[0019] Preferably, the pressure roller assembly further includes a second driving member for driving the pressure roller to rotate. The second driving member includes: a second motor connected to the base; and a synchronous belt connected between the second motor and the end of the pressure roller to rotate the pressure roller.

[0020] Preferably, the pressure roller assembly further includes: a support; and a third drive member connected to the support and acting on the base, the third drive member being used to drive the pressure roller to rise and fall. Preferably, the pressure roller assembly further includes: a pressure sensor disposed between the output end of the third drive member and the base, the pressure sensor being used to detect the downward pressure applied to the pressure roller by the third drive member.

[0021] Preferably, there are multiple pressure rollers, with the axes of the multiple pressure rollers arranged parallel to each other and arranged at equal intervals along the direction of movement of the carrier.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By integrating heating and rolling through the pressure roller, no additional pressure tool is required, thus avoiding the limitations of pressure tool structure on the adaptation of high-density grid cells. This can meet the welding requirements of high-density grid cells and achieve the technical effect of improving cell quality.

[0023] 2. The circular connecting line enables continuous transport and cyclic operation of the carrier, which improves cycle efficiency compared to traditional step welding. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the processing apparatus described in this application; Figure 2 This is a schematic diagram of the first type of pressure roller assembly of the processing apparatus described in this application; Figure 3 This is a schematic diagram of a second type of pressure roller assembly of the processing apparatus described in this application; Figure 4 This is a schematic diagram of the first type of carrier sliding of the processing apparatus described in this application; Figure 5 This is a schematic diagram of the second type of carrier sliding of the processing apparatus described in this application; Figure 6 This is a schematic diagram of the carrier assembly of the processing apparatus described in this application; Figure 7 This is a schematic diagram of the carrier base of the processing device described in this application.

[0025] Explanation of reference numerals in the attached drawings: 100, carrier assembly; 110, carrier; 111, bearing surface; 112, adsorption area; 113, first surface; 114, third surface; 115, first plate; 116, second plate; 120, carrier seat; 121, first seat; 122, second seat; 123, second surface; 124, fourth surface; 125, gap; 131, slide rail; 132, slider; 140, first driving component; 141, first motor; 142, rack; 143, gear; 150, linear driving component; 200, pressure roller assembly; 201, welding space; 210, base; 220, pressure roller; 230, bracket; 240, third driving component; 250, pressure sensor; 300, battery cell. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] This application provides a battery processing apparatus that uses a pressure roller 220 to roll and weld the battery cell 300, thereby improving the quality of the battery cell 300.

[0029] 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.

[0030] As the core unit of photoelectric conversion, the photovoltaic cell 300 has a single-cell output voltage of only about 0.5V and low current conduction efficiency when used alone, which cannot meet the actual power generation requirements of photovoltaic modules. The solder ribbon, as the connecting medium, is usually made of tin-plated copper strip, possessing good conductivity and ductility. Its core function is to connect multiple cells 300 in series or parallel to form a cell string. The solder ribbon connects the negative electrode of one cell 300 to the positive electrode of the next, allowing the dispersed electrical energy to converge and ultimately achieve voltage and current superposition, laying the foundation for subsequent module encapsulation. The welding quality directly determines the current conduction efficiency of the cell string: if the solder ribbon is not tightly connected to the cell 300 grid lines, contact resistance will occur, leading to energy loss; if the welding strength is insufficient, the solder ribbon is prone to detachment during subsequent module transportation or use, directly affecting module lifespan and power generation stability.

[0031] The limitations and practical pain points of existing infrared welding technology: Currently, over 90% of fully automatic stringing machines on the market use infrared welding technology. Its core process involves first precisely positioning the battery cells 300 to be welded using a robotic arm, then placing a pressure fixture (mostly made of high-temperature resistant ceramic or alloy to prevent high-temperature deformation) in the grid area of ​​each battery cell 300. Subsequently, a conveyor belt transports the battery cell 300 and the pressure fixture together into an infrared lamp heating chamber. The infrared lamps in the heating chamber heat the surface of the solder strip through radiation, melting the tin layer and thus achieving bonding between the solder strip and the grid lines of the battery cell 300. After welding, the pressure fixture is conveyed out, cooled, collected by a recycling mechanism, and then returned to the pressure fixture placement station via a circular conveyor system, forming a "pick-place - weld - recycle - reuse" circular supply model. However, this technology has significant limitations: First, the demand for clamps is large. A module production line with an annual output of 1GW needs to be equipped with thousands of clamps. Not only is the initial procurement cost high, but the clamps are also prone to surface wear and reduced flatness due to long-term exposure to high temperatures, requiring replacement every few months, resulting in high maintenance costs. Second, the precision requirements for picking and placing are stringent. The clamps must be precisely aligned with the 300 grid lines of the solar cells, with the deviation controlled within ±2μm. If the robotic arm makes a micron-level error in picking and placing, it will cause the clamps to shift, leading to misalignment of the solder strips and resulting in poor soldering or... Damage to the grid lines reduces the yield of battery strings by 3%-5%; third, the adaptability of high-density grids is poor. With the popularization of high-density grid batteries with more than 20 grids (such as 24-grid, 28-grid, and 50-grid batteries), the mold needs to be processed with fine grooves at corresponding distances to avoid the grid lines. However, if the grooves are too fine, it will easily lead to insufficient processing precision (such as edge burrs), and the grid lines will be easily scratched during welding. Moreover, the overall structural strength of the mold will decrease, and it will be easy to break during repeated use. At present, the yield of infrared welding molds adapted to more than 20 grids in the industry can only reach 60%, which is difficult to meet the needs of large-scale mass production.

[0032] To address the shortcomings of existing photovoltaic cell string welding methods, which primarily employ infrared welding, rely on a large number of continuously supplied pressure plates, have difficulty adapting to high-density grid cells with 20 or more grids, require high precision and are costly in transfer mechanisms and return lines, and suffer from wasted start-stop cycles in step-by-step welding, this application aims to provide a cell processing device. This device can achieve a tight fit between the welding strip and the cell 300 without additional pressure plates, effectively meeting the welding requirements of high-density grid cells. A continuous conveying mechanism 110 is achieved through a circulating connection structure, significantly improving production cycle time. Simultaneously, precise pressure control and combined heating and rolling reduce the risk of incomplete welds and microcracks in the cell 300, ultimately achieving efficient and high-quality welding of high-density grid cells while simplifying the equipment structure to reduce costs.

[0033] A battery processing apparatus, such as Figure 1As shown, the assembly for welding the battery cell 300 and the welding strip located on the battery cell 300 includes a carrier assembly 100 and a pressure roller assembly 200. The carrier assembly 100 is used to carry and transport the battery cell 300; the pressure roller assembly 200 is used to heat and roll the battery cell 300 to achieve welding of the battery cell 300 and the welding strip. Specifically, the carrier assembly 100 includes a carrier 110, which has a bearing surface 111 for carrying the battery cell 300. The bearing surface 111 has an adsorption function so that the battery cell 300 located on the bearing surface 111 can be adsorbed and fixed. Pressure roller assembly 200, such as Figure 2 , 3 As shown, the pressure roller assembly 200 is located directly above the carrier assembly 100 during welding. The pressure roller assembly 200 includes: a base 210 and a pressure roller 220. The pressure roller 220 is cylindrical and has heat conduction and / or self-heating capabilities. The pressure roller 220 is rotatably connected to the base 210 and has a degree of freedom of movement to rotate around an axis. The pressure roller assembly 200 is fixed in position and forms a welding space 201. The carrier 110 has a degree of freedom of movement so that when the carrier 110 passes through the welding space 201, the pressure roller 220 can roll and press on the battery to weld the battery and the welding strip. The length of the pressure roller 220 is generally greater than the width of the battery cell 300 so that all the welding strips on the battery cell 300 can be pressed by the pressure roller 220. The direction of movement of the carrier 110 is a straight line perpendicular to the axis of the pressure roller 220.

[0034] In other words, such as Figure 1 , 2 As shown in Figure 3, the pressure roller assembly 200 is fixedly installed at a preset work position, forming a welding space 201 between it and the bearing surface 111 of the carrier assembly 100. The carrier 110 has a degree of freedom of movement and can drive the battery cell 300 and the welding strip through the welding space 201. When the carrier 110 is located in the welding space 201, the battery cell 300 and the welding strip are welded by the rolling and heating of the pressure roller 220.

[0035] It should be noted that the heat conduction capability of the pressure roller 220 means that it can be heated by an external heat source, allowing it to heat up and thus enabling it to weld the strip and battery cell 300. The pressure roller 220 can be made of a metal material with good thermal conductivity. The self-heating capability of the pressure roller 220 means that a heating structure such as a heating wire can be installed inside the pressure roller 220, allowing it to heat up on its own and thus enabling it to weld the strip and battery cell 300. Again, the pressure roller 220 can be made of a metal material with good thermal conductivity. A temperature sensor can be installed inside the pressure roller 220 to detect and provide feedback on its temperature.

[0036] In one embodiment, to further improve welding efficiency, such as Figure 3 As shown, the pressure roller assembly 200 can be equipped with multiple pressure rollers 220, whose axes are parallel to each other and are arranged at equal intervals along the moving direction of the carrier 110. The carrier 110 continuously moves along the moving direction, and the battery cell 300 passes through the multiple pressure rollers 220 in sequence. Each pressure roller 220 completes the welding of a section of the welding strip. The multiple pressure rollers 220 work together to achieve continuous welding of the entire welding strip, significantly improving welding efficiency. At the same time, the layout of multiple pressure rollers 220 can distribute the welding pressure, avoid wear caused by long-term high-load operation of a single pressure roller 220, extend the service life of the pressure rollers 220, and reduce the maintenance frequency of the equipment.

[0037] The core problem of traditional infrared welding is that the heating function and the pressing function are separated (a separate press is required for pressing). This application integrates heating (heat conduction / self-heating of the pressure roller 220) and pressing (rolling of the pressure roller 220) into the pressure roller assembly 200, eliminating the need for an additional press; at the same time, the carrier 110 moves to replace the press cycle, thus solving the problems of press dependence and high-density grid compatibility from the root.

[0038] Furthermore, the carrier assembly 100 is the core for achieving stable delivery of the battery cell 300. The carrier assembly 100 includes a carrier 110 for carrying the battery cell 300, a carrier seat 120 for providing sliding support for the carrier 110, a first driving member 140 for driving the carrier 110 to slide, and a sliding structure for ensuring the smooth movement of the carrier 110.

[0039] like Figure 2 , 3 As shown, the bearing surface 111 is planar. The top of the carrier 110 is provided with a bearing surface 111 for supporting the battery cell 300, and the bearing surface 111 is planar. The pressure roller 220 is cylindrical, and the rolling trajectory of the pressure roller 220 is linear contact. The planar bearing surface 111 can ensure that the contact area between the pressure roller 220 and the battery cell 300 and the welding strip is uniform, avoiding insufficient local pressure due to unevenness of the bearing surface 111, which may cause poor welding, or excessive pressure, which may cause microcracks in the battery cell 300, thus ensuring consistent welding quality.

[0040] like Figure 1As shown, the supporting surface 111 has several adsorption areas 112, each with independent adsorption capacity to adsorb one battery cell 300. The supporting surface 111 integrates adsorption function and is divided into several independent adsorption areas 112. Each adsorption area 112 has independent adsorption capacity and can adsorb one battery cell 300. Traditional presses fix the battery cell 300 by mechanical pressure, which can easily damage the high-density grid. Preferably, negative pressure adsorption can be used, which avoids mechanical contact damage. The design of independent adsorption areas 112 can realize the individual fixation of each battery cell 300. In one embodiment, the independent adsorption area 112 can be implemented by: opening an independent adsorption cavity inside the carrier 110, and opening adsorption holes on the supporting surface 111, with the adsorption holes corresponding to the adsorption cavity, so as to form an independent adsorption area 112 on the supporting surface 111.

[0041] To ensure that the rolling trajectory of the pressure roller 220 perfectly matches the extension direction of the welding strip, the moving direction of the carrier 110 is set to a straight line perpendicular to the axis of the pressure roller 220. The axial direction of the pressure roller 220 is its length direction. Straight line movement perpendicular to this axis allows the pressure roller 220 to roll along the extension direction of the welding strip, covering the entire length range of the welding strip, avoiding local incomplete welding caused by deviation in the moving direction, and ensuring the contact stability between the pressure roller 220 and the welding strip during the rolling process.

[0042] Furthermore, to achieve stable movement of the carrier 110 along this straight direction, such as... Figure 4 As shown, the carrier assembly 100 includes a carrier base 120 and a first driving member 140; the carrier assembly 100 further includes: the carrier base 120 and the first driving member 140, with the carrier base 120 slidably connected to the carrier 110; the first driving member 140 is used to drive the carrier 110 to slide. The carrier 110 is slidably connected to the carrier base 120, which provides a stable sliding support foundation for the carrier 110; the first driving member 140 is connected between the carrier base 120 and the carrier 110, and is used to drive the carrier 110 to slide along a preset trajectory of the carrier base 120, providing a power source for the movement of the carrier 110, ensuring the uniformity and stability of the carrier 110's movement speed, and avoiding welding deviations.

[0043] Specifically, such as Figure 4As shown, the first driving component 140 includes a rack 142, a gear 143, and a first motor 141. The rack 142 is fixedly connected to the carrier 110; the gear 143 is rotatably connected to the carrier base 120 and meshes with the rack 142; the first motor 141 is connected to the carrier base 120 and drives the gear 143 to rotate, thereby causing the carrier 110 to slide on the carrier base 120. In other words, the first driving component 140 adopts a gear 143 and rack 142 transmission structure, specifically including a rack 142, a gear 143, and a first motor 141. Rack 142 is fixedly connected to carrier 110, and its extension direction is consistent with the movement direction of carrier 110. Gear 143 is rotatably connected to carrier base 120, and gear 143 and rack 142 mesh with each other. First motor 141 is fixedly connected to carrier base 120, and its output shaft is connected to gear 143 for transmission. When first motor 141 starts, it can drive gear 143 to rotate, and then drive carrier 110 to slide along carrier base 120 through the meshing action of gear 143 and rack 142. The core reason for choosing gear 143 and rack 142 transmission is that this transmission method has the characteristics of high transmission accuracy, strong load capacity and stable transmission ratio, which can meet the needs of carrier 110 (carrying multiple solar cells 300) for high-frequency cyclic sliding. Compared with the defects of belt transmission being prone to slippage and screw transmission being prone to wear, gear 143 and rack 142 transmission is more suitable for the continuous operation scenario of photovoltaic production line, and the later maintenance cost is lower, which can ensure the accuracy of carrier 110 movement for a long time.

[0044] In other embodiments, the positions of gear 143 and rack 142 can be interchanged, i.e., rack 142 is located on carrier base 120, and gear 143 and first motor 141 are located on carrier 110.

[0045] It should be noted that, as Figure 4 As shown, a slide rail 131 and a slider 132 are provided between the carrier 110 and the carrier base 120. The slide rail 131 is fixedly connected to the carrier base 120, and the slider 132 is fixedly connected to the carrier 110, with the slide rail 131 and the slider 132 slidingly engaged; or, the slide rail 131 is fixedly connected to the carrier 110, and the slider 132 is fixedly connected to the carrier base 120, with the slide rail 131 and the slider 132 slidingly engaged. The carrier 110 and the carrier base 120 are slidably connected through the cooperation of the slide rail 131 and the slider 132. There are two feasible assembly schemes: In one embodiment, the slide rail 131 is fixedly connected to the carrier base 120, and the slider 132 is fixedly connected to the carrier 110, with the slide rail 131 and the slider 132 slidingly engaging with each other; In another embodiment, the slide rail 131 is fixedly connected to the carrier 110, and the slider 132 is fixedly connected to the carrier base 120, with the movement of the carrier 110 also achieved through the sliding cooperation of the slide rail 131 and the slider 132.

[0046] Furthermore, such as Figure 4 As shown, the carrier base 120 has a first surface 113, which is located on the top surface of the carrier base 120; the carrier 110 has a second surface 123, which is located on the bottom surface of the carrier 110; the first surface 113 and the second surface 123 are arranged opposite to each other, and the slide rail 131 and the slider 132 are located between the first surface 113 and the second surface 123. Alternatively, as... Figure 5 As shown, the carrier base 120 has a third surface 114, which is located on the side of the carrier base 120; the carrier 110 has a fourth surface 124, which is located on the side of the carrier 110; the third surface 114 and the fourth surface 124 are arranged opposite to each other, and the slide rail 131 and the slider 132 are located between the third surface 114 and the fourth surface 124.

[0047] Specifically, such as Figure 4 As shown, the carrier 110 and the carrier base 120 are vertically slidably coupled. The carrier base 120 has a first surface 113 facing upwards, which is the top surface of the carrier base 120; the carrier 110 has a second surface 123 facing downwards, which is the bottom surface of the carrier 110; the first surface 113 and the second surface 123 are arranged opposite to each other, and the slide rail 131 and the slider 132 are installed between the first surface 113 and the second surface 123. This type of installation is suitable for scenarios where the width of the equipment side is limited, achieving sliding support through the top surface contact, resulting in a compact side structure and small space occupation; or, as Figure 5 As shown, the carrier 110 and the carrier base 120 are laterally distributed and slide together. The carrier 110 is designed as a combined structure, specifically including a horizontally arranged first plate 115 and a vertically arranged second plate 116. The first plate 115 and the second plate 116 are fixedly connected (forming an L-shaped structure). The first plate 115 is used to support the carrier 110 and the battery cell 300, and the second plate 116 is used to cooperate with the carrier base 120. The carrier base 120 has a third surface 114 facing the second plate 116 of the carrier 110, which is the side surface of the carrier base 120. The second plate 116 of the carrier 110 has a fourth surface 124 facing the third surface 114, which is the side surface of the second plate 116. The third surface 114 and the fourth surface 124 are arranged opposite to each other, and the slide rail 131 and the slider 132 are installed between the third surface 114 and the fourth surface 124. This side-mounted connection method, supported by the vertical second plate 116, can further improve the stability of the carrier 110 during sliding, and avoid tilting or shifting of the carrier 110 due to excessive length or uneven weight distribution. It is especially suitable for scenarios where multiple battery cells 300 are transported simultaneously.

[0048] Preferred, such as Figure 4 , 5As shown, the slide rails 131 are configured in two sets, with the first driving member 140 located between the two sets of slide rails 131: for scenarios where the carrier 110 and carrier seat 120 slide vertically, the first driving member 140 is installed between the first surface 113 and the second surface 123; for scenarios where the carrier 110 and carrier seat 120 slide laterally, the first driving member 140 is installed between the third surface 114 and the fourth surface 124. The symmetrical arrangement of the two sets of slide rails 131 ensures that the carrier 110 is subjected to balanced forces during sliding, avoiding tilting of the carrier 110 caused by support from a single slide rail 131; the first driving member 140, located between the two sets of slide rails 131, allows the driving force to act on the central area of ​​the carrier 110, further reducing the offset of the carrier 110 during sliding, ensuring that the carrier 110 moves strictly along a direction perpendicular to the axis of the pressure roller 220, and ensuring precise alignment of the welding strip with the rolling trajectory of the pressure roller 220.

[0049] To achieve continuous cyclic operation of carrier 110, such as Figure 6 As shown, the carrier base 120 includes a first base 121 and a second base 122. Two first bases 121 are provided, positioned opposite each other and fixed in position. Two second bases 122 are also provided, each positioned on one side of a first base 121. Each second base 122 can move between the two first bases 121 to have a first state and a second state: In the first state, the second base 122 engages with the end of the first base 121, allowing the carrier 110 to slide from the first base 121 to the second base 122, or vice versa; in the second state, the second base 122 moves from one of the first bases 121 to the other. In other words, the engagement of the first bases 121 and the second base 122 forms a circular connecting line. Specifically: like Figure 6 As shown, there are two first seats 121. The two first seats 121 are fixedly arranged relative to each other along the sliding direction of the carrier 110, serving as a processing seat and a loading / unloading seat respectively. The processing seat is provided with a pressure roller assembly 200 on its side, and the welding space 201 corresponding to the pressure roller assembly 200 is used to support the battery cell 300 to complete the welding operation. The loading / unloading seat is used to complete the unloading operation of the battery string after welding. The design of two fixed first seats 121 can realize parallel operation, that is, when one first seat 121 is welding, the other first seat 121 simultaneously loads or unloads the battery cell 300, avoiding the start-stop waiting of traditional step welding and greatly improving the overall production cycle.

[0050] There are two second seats 122, one located on the outside of the other two first seats 121. That is, one second seat 122 is provided on the outside of the processing seat and one on the outside of the loading / unloading seat. The second seats 122 can move between the two first seats 121 and have two working states: a first state and a second state. In the first state, the second seat 122 is docked with the end of one of the first seats 121. At this time, the carrier 110 can slide from the first seat 121 to the second seat 122, or from the second seat 122 to the first seat 121, realizing the transition of the carrier 110 between the first seat 121 and the second seat 122. In the second state, the second seat 122 moves from the currently docked first seat 121 to another first seat 121, completing the switching of docking objects and providing a bridge for the cross-seat transfer of the carrier 110 between the two first seats 121. Through the docking and cooperation of the two first seats 121 and the two second seats 122, a complete circular connection line can be formed, so that the carrier 110 can be welded on the first seat 121 and then transferred to another first seat 121 through the connection of the second seat 122 for loading and unloading of battery cells 300, ultimately realizing the continuous cyclic operation of the carrier 110 without manual intervention in handling.

[0051] like Figure 6 , 7 As shown, in the first state, a gap 125 is formed between the first seat 121 and the second seat 122. The length of the gap 125 is less than the length of the carrier 110, allowing the carrier 110 to slide across the gap 125 from the first seat 121 to the second seat 122 or from the second seat 122 to the first seat 121. It is understood that to ensure the stability of the carrier 110 when transferring between the first seat 121 and the second seat 122, a gap 125 is formed between the first seat 121 and the second seat 122 in the first state, and the length of this gap 125 is less than the length of the carrier 110 along the sliding direction. This ensures that when the carrier 110 transfers across the gap 125, there is always a portion of the structure supported on the first seat 121 or the second seat 122, preventing the carrier 110 from falling off or tilting due to complete suspension, and ensuring a smooth and reliable transfer process.

[0052] A linear drive 150 is provided on the second seat 122 to allow the second seat 122 to slide linearly between the two first seats 121. To achieve flexible movement of the second seat 122 between the two first seats 121, the linear drive 150 drives the second seat 122 to slide linearly between the two first seats 121, thereby achieving automated switching between the first and second states. The introduction of the linear drive 150 can replace manual drive, not only improving the efficiency of the state switching of the second seat 122, but also ensuring the accuracy of the docking position, avoiding slippage, jamming, or damage to the carrier 110 due to docking deviation. In one embodiment, the linear drive 150 can be a linear motor.

[0053] Meanwhile, the pressure roller assembly 200 is located on the side of the first seat 121 so that it can perform roll welding on the battery cell 300 carried by the carrier 110 on the first seat 121. That is, the installation position of the pressure roller assembly 200 matches the layout of the first seat 121, specifically located on the side of the first seat 121, and the rolling area of ​​the pressure roller assembly 200 corresponds to the bearing surface 111 of the carrier 110 on the first seat 121. When the carrier 110 moves the battery cell 300 to the corresponding area of ​​the first seat 121, the pressure roller assembly 200 can directly perform roll welding on the battery cell 300 carried by the carrier 110 and the welding strip without adjusting the movement trajectory of the carrier 110, simplifying the operation process and improving welding efficiency.

[0054] Furthermore, such as Figure 6 As shown, the circular connecting line formed by the docking of the two first seats 121 and the two second seats 122 is the core of realizing the continuous cyclic operation of the carrier 110. The working logic is as follows: One of the two first seats 121 is defined as a processing seat (with a pressure roller assembly 200 mounted on its side, used to cooperate with the welding of the battery cells 300), and the other is defined as a loading / unloading seat (responsible for loading the battery cells 300 onto the carrier 110 and unloading the welded battery strings). The two second seats 122 correspond to the end areas of the two first seats 121 respectively, and can flexibly switch docking targets, undertaking the function of transferring the carrier 110 between the two first seats 121. Initially, one second seat 122 docks with the end of the processing seat, and the other second seat 122 docks with the end of the loading / unloading seat, with an empty carrier 110 (battery strings removed) that has just been unloaded placed on the loading / unloading seat. The loading / unloading seat is for the empty carrier 110. 10. After the loading is completed (placing the battery cells 300 and laying the welding strip), it becomes the carrier 110 to be welded. At this time, the second seat 122 of the docking station switches to dock with the end of the processing station, and the carrier 110 to be welded is transferred to the processing station through the second seat 122. The processing station starts the welding process. After the welding is completed, the second seat 122 of the docking station switches to dock with the end of the loading and unloading station, and the welded carrier 110 (carrying the battery string) is transferred to the loading and unloading station through the second seat 122. The loading and unloading station removes the battery string from the welded carrier 110, and the carrier 110 returns to the unloaded state. Then, loading is carried out again, and the next round of loading → transfer welding → unloading → loading is entered into a closed loop cycle to achieve continuous operation.

[0055] As the core execution module for welding operations, the pressure roller assembly 200 also includes a second drive member and a third drive member 240. The second drive member is used to drive the pressure roller 220 to rotate, and the third drive member 240 is used to drive the pressure roller 220 to move vertically.

[0056] Specifically, such as Figure 2 , 3 As shown, to achieve the rolling action of the pressure roller 220, the pressure roller assembly 200 further includes a second driving component for driving the pressure roller 220 to rotate. This second driving component specifically includes a second motor and a synchronous belt (the second driving component, second motor, and synchronous belt are not shown). The second motor is fixedly connected to the base 210, and the synchronous belt is connected between the output shaft of the second motor and the end of the pressure roller 220. When the second motor starts, the rotation of the output shaft of the second motor can be transmitted to the pressure roller 220 through the synchronous belt, thereby driving the pressure roller 220 to rotate around its own axis. That is, while the carrier 110 carries the battery cells past the pressure roller 220, the pressure roller 220 itself is driven by the second motor. The synchronous belt drive has the characteristics of stable transmission ratio, high transmission efficiency, and low operating noise, which can ensure the uniformity of the rotation speed of the pressure roller 220 and avoid uneven melting of the welding strip due to speed fluctuations. At the same time, the synchronous belt drive can effectively buffer vibration, reduce the impact during the rotation of the pressure roller 220, and protect the contact stability between the pressure roller 220 and the battery cell 300, making it particularly suitable for the precision welding requirements of high-density grid cells.

[0057] To achieve the clamping of the pressure roller 220 during welding, such as Figure 2 , 3 As shown, the pressure roller assembly 200 also includes a bracket 230 and a third drive component 240. The bracket 230 serves as the fixed mounting base for the pressure roller assembly 200 and is fixedly connected to the equipment frame. The third drive component 240 is connected to the bracket 230, and its output end acts on the base 210 to drive the base 210 to move the pressure roller 220 vertically. The third drive component 240 drives the pressure roller 220 to descend to a suitable position. Under the drive of the first drive component 140, the carrier 110 carries the battery cell 300 into the welding space 201, causing the pressure roller 220 to contact the welding strip and apply a preset pressure, so that the pressure roller 220 rolls on the battery cell 300, ensuring that the welding strip and the grid lines of the battery cell 300 are tightly adhered. The third drive component 240 can be a linear drive element such as a cylinder. Cylinders have the characteristics of fast response speed and stable output force, which can meet the high-frequency operation requirements of the pressure roller 220's lifting and lowering, and are also low in cost and easy to maintain.

[0058] like Figure 2 , 3 As shown, the pressure roller assembly 200 also includes a pressure sensor 250, which is disposed between the output end of the third drive member 240 and the base 210. The pressure sensor 250 is used to detect the downward pressure applied by the third drive member 240 to the pressure roller 220. To accurately control the clamping force of the pressure roller 220 on the cell 300 and the welding strip, the pressure roller assembly 200 also includes a pressure sensor 250, which is disposed between the output end of the third drive member 240 and the base 210, and is used to detect the downward pressure applied by the third drive member 240 to the pressure roller 220 in real time. Welding pressure is a key parameter affecting welding quality: too low pressure will cause the welding strip to not make tight contact with the grid lines, which is easy to form a cold weld; too high pressure will cause microcracks in the cell 300, especially for high-density grid cells (thin grid lines and weak pressure resistance), where pressure control is even more important. The pressure sensor 250 can detect pressure signals in real time and feed them back to the control system. The control system can then adjust the output force of the third drive component 240 to ensure that the welding pressure remains stable within the preset range, effectively reducing the risk of poor welding and microcracks in the battery cell 300.

[0059] 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.

[0060] 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 processing apparatus, characterized in that, For welding the solar cell (300) and the solder strips located on the solar cell (300), including: Carrier assembly (100), the carrier assembly (100) comprising: The carrier (110) has a bearing surface (111) for bearing the battery cell (300), and the bearing surface (111) has an adsorption function so that the battery cell (300) located on the bearing surface (111) can be adsorbed and fixed. A pressure roller assembly (200), the pressure roller assembly (200) comprising: Base (210); The pressure roller (220) is cylindrical and has thermal conductivity and / or self-heating capacity. The pressure roller (220) is rotatably connected to the base (210) and has a degree of freedom of rotation about an axis. The pressure roller assembly (200) is fixed in position and forms a welding space (201); the carrier (110) has a degree of freedom of movement so that when the carrier (110) passes through the welding space (201), the pressure roller (220) can roll on the battery to weld the battery and the welding strip.

2. The battery processing apparatus according to claim 1, characterized in that, The bearing surface (111) is planar.

3. The battery processing apparatus according to claim 2, characterized in that, The bearing surface (111) has a plurality of adsorption areas (112), each of the adsorption areas (112) having an independent adsorption capacity to adsorb a battery cell (300).

4. The battery processing apparatus according to claim 1, characterized in that, The carrier (110) moves in a straight line direction perpendicular to the axis of the pressure roller (220).

5. The battery processing apparatus according to claim 4, characterized in that, The carrier assembly (100) further includes: Carrier base (120), the carrier base (120) is slidably connected to the carrier (110); A first driving member (140) is used to drive the carrier (110) to slide. The first driving member (140) includes: A rack (142) is fixedly connected to the carrier (110); A gear (143), rotatably connected to the carrier seat (120), the gear (143) being used to mesh with the rack (142); and A first motor (141) is connected to the carrier seat (120). The first motor (141) is used to drive the gear (143) to rotate so that the carrier (110) slides on the carrier seat (120).

6. The battery processing apparatus according to claim 5, characterized in that, A slide rail (131) and a slider (132) are provided between the carrier (110) and the carrier base (120). The slide rail (131) is fixedly connected to the carrier base (120), and the slider (132) is fixedly connected to the carrier (110). The slide rail (131) and the slider (132) slide in cooperation. Alternatively, the slide rail (131) is fixedly connected to the carrier (110), and the slider (132) is fixedly connected to the carrier seat (120), with the slide rail (131) and the slider (132) sliding together.

7. The battery processing apparatus according to claim 1, characterized in that, The pressure roller assembly (200) further includes a second driving member for driving the pressure roller (220) to rotate. The second driving member includes: A second motor is connected to the base (210); A synchronous belt is connected between the second motor and the end of the pressure roller (220) to rotate the pressure roller (220).

8. The battery processing apparatus according to claim 1, characterized in that, The pressure roller assembly (200) also includes: Bracket (230); The third driving component (240) is connected to the bracket (230) and acts on the base (210). The third driving component (240) is used to drive the pressure roller (220) to rise and fall.

9. A battery processing apparatus according to claim 8, characterized in that, The pressure roller assembly (200) also includes: A pressure sensor (250) is disposed between the output end of the third drive member (240) and the base (210). The pressure sensor (250) is used to detect the downward pressure applied by the third drive member (240) to the pressure roller (220).

10. A battery processing apparatus according to claim 1, characterized in that, The pressure rollers (220) are multiple, and the axes of the multiple pressure rollers (220) are arranged parallel to each other and are arranged at equal intervals along the moving direction of the carrier (110).

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