Battery string transport welding device

Abstract

The application discloses a battery string conveying and welding device which comprises a moving mechanism, a limiting component and a heating mechanism, wherein the moving mechanism comprises a first sliding component and a bearing component, the bearing component is connected with the driving end of the first sliding component, the bearing component is provided with suction holes, the bearing component is used for bearing and adsorbing at least one group of battery strings to be welded, and the first sliding component drives the bearing component to pass through a welding station at a constant speed along a first horizontal direction; a plurality of groups of limiting components are arranged above the battery strings to be welded, each group of limiting components is used for pressing a corresponding group of welding strip groups and battery pieces; and the heating mechanism is arranged above the welding station and is used for heating the battery pieces and the welding strip groups when the bearing component passes through the welding station at a constant speed. The moving mechanism is used for bearing the whole battery string to be welded and passing through the welding station at a constant speed, and the heating mechanism is used for continuously heating the battery string to be welded, so that each battery piece has the same and stable welding time.

Description

Technical Field

[0001] This application relates to the field of battery string production equipment manufacturing, specifically a battery string conveying and welding device. Background Technology

[0002] A battery string is formed by arranging solder strips and battery cells in a predetermined order, and then welding the solder strips to the main grid lines of the battery cells in series. A common welding process for battery cell stringing involves alternately transporting the battery cells and solder strips one by one in a predetermined order onto a conveyor mechanism with an adsorption device. The conveyor mechanism adsorbs and fixes the battery cells and solder strips and moves towards the welding mechanism. When the battery cells move to a position below the welding mechanism, the welding mechanism descends and presses the battery cells and solder strips on the conveyor mechanism, while simultaneously welding the battery cells and solder strips into a string through heating.

[0003] Existing conveyor mechanisms, due to their need to handle the sequential feeding of solar cells from the upstream stage (meaning that after receiving one cell, the conveyor needs to advance a predetermined distance to make room for the next cell), result in cells being sequentially fed to the welding mechanism. Consequently, the welding mechanism can only weld cells one by one during the cell string welding process. When cell feeding is interrupted (e.g., due to defective cells or the need to replace welding reels), the welding time for cells below the welding mechanism increases, potentially damaging the cells and affecting the overall photovoltaic module's photoelectric conversion efficiency. Furthermore, the current welding process, being sequential, is affected by the feeding speed, leading to low welding efficiency. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a battery string welding and conveying device, the detailed technical solution of which is as follows: This application relates to a battery string conveying and welding device, including a transfer mechanism, a limiting component, and a heating mechanism. The transfer mechanism includes a first sliding component and a carrying component. The carrying component is drively connected to the driving end of the first sliding component. The carrying component has adsorption holes and is configured to carry and adsorb at least one set of battery strings to be welded arranged along a first horizontal direction. The first sliding component is configured to drive the carrying component carrying the battery strings to be welded to pass through the welding station at a uniform speed along the first horizontal direction. The battery string to be welded includes several battery cells and welding ribbons arranged above or below the battery cells according to a predetermined arrangement. Several limiting components are placed above the battery string to be welded, each limiting component being configured to press a corresponding welding ribbon group and battery cell in the battery string to be welded. The heating mechanism is located above the welding station and is configured to heat the battery cells and welding ribbon groups on the carrying component when the carrying component passes through the welding station at a uniform speed.

[0005] The transfer mechanism carries the entire string of batteries to be welded and moves it through the welding station at a constant speed, enabling the heating mechanism to continuously heat the battery string and ensure that each battery cell has a stable welding time. Moreover, the entire heating process of the battery string will not be interrupted by the feeding of battery cells or the replacement of unqualified battery cells, thus avoiding the situation where some battery cells are over-welded. In addition, the welding time of each battery cell can be adjusted by adjusting the movement speed of the transfer mechanism.

[0006] In some embodiments, the support assembly includes a movable frame, a translational base plate, and several adsorption platforms. The lower end of the movable frame is adjustablely mounted on the translational base plate, which is connected to the drive end of the first sliding assembly. Several adsorption platforms are arranged side by side on the upper end of the movable frame, and each adsorption platform is used to adsorb one battery cell. Adsorption holes are opened on the adsorption platform.

[0007] By combining the adsorption platform and the limiting component, all battery cells and welding ribbons are fixed on the carrier component in a predetermined order. Then, the moving frame is driven by the first sliding component to move horizontally to the welding station. At the welding station, the heating mechanism is used to solidify the entire battery string.

[0008] In some embodiments, the transfer mechanism further includes a translation drive assembly configured to drive the load-bearing mechanism to translate along a second horizontal direction, which is perpendicular to the first horizontal direction. The translation drive assembly includes a rack, a gear, and a first motor. The fixed end of the first motor is connected to the moving frame, the gear is mounted on the drive end of the first motor, and the rack is fixedly mounted on the translation base plate along the second horizontal direction and meshes with the gear. Alternatively, the translation drive assembly includes a second motor, a screw, and a slider nut. One end of the slider nut is connected to the moving frame, and the other end of the slider nut is connected to the screw. The fixed end of the second motor is fixedly connected to the translation base plate, and the movable end of the second motor is connected to the screw. The second motor is configured to drive the moving frame to translate along the second horizontal direction via the screw and the slider nut.

[0009] By setting up a translation drive component, the position of the entire battery string can be adjusted in the second horizontal direction, thereby ensuring that the battery string can be accurately delivered to the welding position of the welding station.

[0010] In some embodiments, the gear is a helical gear and the rack is a helical rack, with the teeth of the helical gear meshing obliquely with the teeth of the helical rack.

[0011] The design of helical gears and helical racks makes the translation drive assembly smooth, with strong load-bearing capacity, high transmission efficiency, and compact structure.

[0012] In some embodiments, the limiting component includes a mounting frame and elastic clamping members. The elastic clamping members are arranged in a matrix on one side of the mounting frame. The positions of the elastic clamping members correspond to or are offset from the positions of the welding points of the battery cells. The elastic clamping members are configured to press the welding strip group and the battery cells in the battery string to be welded together. The mounting frame is provided with clearance holes for the heat source of the heating mechanism to pass through.

[0013] The elastic clamping component is used to elastically clamp the battery cells, which improves the clamping effect. The design of the position of the elastic clamping component corresponding to or staggering the position of the welding point of the battery cell can select the most suitable limiting component according to the actual heating method.

[0014] In some embodiments, the bearing component has positioning grooves at both ends extending along the second horizontal direction for limiting the limiting component, and / or the bearing component has a magnet installed at the end extending along the second horizontal direction for attracting and fixing the limiting component, wherein the second horizontal direction is perpendicular to the first horizontal direction.

[0015] Positioning slots and magnets are used to position the limiting components, ensuring that the battery cells and welding strips do not shift position when the transfer mechanism transports the battery string.

[0016] In some embodiments, the transfer mechanism further includes an opening and closing component and a welding strip limiting component disposed at both ends of the adsorption platform along a first horizontal direction. The welding strip limiting component is provided with a limiting groove corresponding to the position of the welding strip group. The driving end of the opening and closing component is connected to the welding strip limiting component in a transmission manner. The opening and closing component is configured to drive the welding strip limiting component to open and close to clamp or release the welding strip located in the limiting groove.

[0017] By setting up a ribbon limiting component and an opening and closing component, the ribbon can be further fixed to prevent the ribbon group from shifting due to inertia during the transport of battery strings.

[0018] In some embodiments, the opening and closing assembly includes a lifting drive, a lifting plate, and a wedge block installed at the end of the adsorption platform. The welding strip limiting assembly includes a first comb plate, a second comb plate, and two guide wheels. The two guide wheels are respectively installed on the first comb plate and the second comb plate. The wedge block is located between the two guide wheels. The fixed end of the lifting drive is installed on the translation base plate, and the movable end of the lifting drive is connected to the lifting plate. The first comb plate and the second comb plate are installed alternately on the lifting plate in a translational manner along a second horizontal direction. The second horizontal direction is perpendicular to the first horizontal direction.

[0019] A simple opening and closing component and a solder strip limiting component with good limiting effect are provided.

[0020] In some embodiments, the heating mechanism includes at least one of a laser welder, an infrared welding light box, an LED welding light box, and a UV lamp.

[0021] The heating mechanism can be selected for different heating methods depending on the working conditions, making it highly compatible.

[0022] In some embodiments, two sets of transfer mechanisms are provided, arranged along a second horizontal direction, and configured to move alternately between the loading station and the welding station. The second horizontal direction is perpendicular to the first horizontal direction. The heating mechanism includes a first heating part and a second heating part, both of which are disposed above the welding station and configured to heat and solidify the battery strings to be welded on the two sets of transfer mechanisms respectively. The heating power of the first heating part and the second heating part can be adjusted independently. Alternatively, the heating mechanism includes a first welding component and a second sliding component. The first welding component is mounted on the drive end of the second sliding component, and the second sliding component is configured to drive the first welding component to reciprocate above the two sets of transfer mechanisms. Alternatively, the heating mechanism includes a second welding component and a third sliding component. The second welding component is mounted on the drive end of the third sliding component, and the third sliding component is configured to drive the second welding component to move synchronously with the battery strings to be welded carried by the transfer mechanism along the second horizontal direction.

[0023] By setting up two sets of alternating transfer mechanisms, the working efficiency is improved; the design of the heating mechanism including a first heating part and a second heating part or a heating mechanism including a first welding component and a second sliding component can ensure that the heating mechanism heats and cures the battery strings on the two sets of transfer mechanisms respectively, thereby improving the curing effect; the design of the heating mechanism including a second welding component and a third sliding component can enable the second welding component to move synchronously with the battery string to be welded, thereby extending the heating time and improving the welding efficiency. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the battery string conveying and welding device in the embodiments of this application; Figure 2 This is a three-dimensional structural diagram of the transfer mechanism and limiting component in the embodiments of this application; Figure 3 This is a schematic diagram showing the structure and relative positional relationship of the translation base plate and the opening / closing component in the embodiments of this application; Figure 4 This is a three-dimensional structural diagram of the opening and closing component in the embodiments of this application.

[0025] Figures 1 to 4 Includes: The transfer mechanism 1, first sliding assembly 11, bearing assembly 12, moving frame 121, translation base plate 122, adsorption platform 123, translation drive assembly 13, rack 131, gear 132, first motor 133, welding strip limiting assembly 14, first comb plate 141, second comb plate 142, guide wheel 143, opening and closing assembly 15, lifting drive component 151, lifting plate 152, wedge block 153; Limiting component 2, mounting frame 21, elastic clamping component 22; Heating mechanism 3. Detailed Implementation

[0026] To make the above-mentioned objects, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0027] As described in the background section, the conveying efficiency of the existing conveying mechanism is affected by the feeding speed; when using the existing conveying mechanism to convey battery strings, the welding mechanism can only weld the battery strings one piece at a time, which may result in inconsistent heating time for the battery pieces on the battery string, ultimately leading to damage to some battery pieces.

[0028] To address at least one of the aforementioned technical problems in existing conveying mechanisms, this application provides a battery string conveying and welding device, such as... Figure 1 As shown, an achievable embodiment of this application proposes a battery string conveying and welding device, including a transfer mechanism 1, a limiting component 2, and a heating mechanism 3. The transfer mechanism 1 includes a first sliding component 11 and a carrying component 12. The carrying component 12 is drive-connected to the driving end of the first sliding component 11. The carrying component 12 has adsorption holes and is configured to carry and adsorb at least one set of battery strings to be welded arranged along a first horizontal direction. The first sliding component 11 is configured to drive the carrying component 12, which carries the battery strings to be welded, to pass through the welding station at a uniform speed along the first horizontal direction. The battery strings to be welded include several battery cells and welding ribbon groups arranged above or below the battery cells according to a predetermined arrangement. Several sets of limiting components 2 are placed above the battery strings to be welded, and each set of limiting components 2 is configured to press a corresponding set of welding ribbon groups and battery cells in the battery strings to be welded. The heating mechanism 3 is located above the welding station and is configured to heat the battery cells and welding ribbon groups on the carrying component 12 when the carrying component 12 passes through the welding station at a uniform speed.

[0029] Before the transfer mechanism 1 transports the battery string to be welded, the battery cells and welding ribbons are fixed on the support component 12 in a predetermined order. For example, in one embodiment, the battery string to be welded includes battery cells arranged sequentially along a first horizontal direction and welding ribbon groups arranged above and below adjacent battery cells. That is, the welding ribbon groups need to be arranged both above and below the battery cells. In another embodiment, for back-contact battery cells, the welding ribbon groups only need to be arranged on one side of the battery cell. In this embodiment, the welding ribbon groups can be placed on the support component 12 first, and then the battery cells can be placed on the welding ribbon groups. Alternatively, the battery cells can be placed on the support component 12 first, and then the welding ribbon groups can be placed on the battery cells. Here, there are no restrictions on the placement order and arrangement rules of the battery cells and welding ribbon groups. In this embodiment, after the corresponding battery cells and welding ribbon groups are placed on the support component 12, the support component 12 adsorbs and fixes the battery string to be welded, and at the same time, the limiting component 2 is placed above the battery cells. The limiting component 2 presses the welding ribbon groups, making the welding ribbon groups fit tightly with the battery cells. In addition, since the adsorption surface of the welding ribbon group is relatively small, it may not be able to stably adsorb the welding ribbon group. Therefore, by pressing the welding ribbon group with the limiting component 2, the welding ribbon group can be further limited to avoid the welding ribbon group from shifting due to factors such as vibration or inertia during the transportation process.

[0030] Compared to existing battery string conveying methods, this embodiment uses a transfer mechanism 1 to carry the entire battery string to be welded and move it at a constant speed through the welding station. This allows the heating mechanism 3 to continuously heat the battery string, ensuring a stable welding time for each battery cell. Furthermore, the entire heating process of the battery string is uninterrupted, preventing over-welding. Additionally, the welding time for each battery cell can be adjusted by changing the speed of the transfer mechanism 1. For example, to extend the heating time of the battery cell, the speed of the transfer mechanism 1 can be decreased; conversely, to reduce the heating time, the speed can be increased.

[0031] like Figure 2As shown, in one feasible embodiment, the supporting component 12 includes a movable frame 121, a translational base plate 122, and several adsorption platforms 123. The lower end of the movable frame 121 is adjustablely mounted on the translational base plate 122. The translational base plate 122 is connected to the driving end of the first sliding component 11. Several adsorption platforms 123 are arranged side by side on the upper end of the movable frame 121. Each adsorption platform 123 is used to adsorb one battery cell, and adsorption holes are formed on the adsorption platform 123. The first sliding component 11 may include a servo motor, a lead screw, and a lead screw nut. One end of the lead screw nut is threadedly connected to the lead screw, and the other end of the lead screw nut is fixedly connected to the translational base plate. The servo motor drives the lead screw nut to move, thereby causing the translational base plate 122 to translate along a first horizontal direction. Alternatively, the first sliding component 11 may include a motor and a synchronous belt. The translational base plate 122 is fixedly connected to the synchronous belt by a fixing member. While the motor drives the synchronous belt to rotate, the translational base plate can reciprocate along the first horizontal direction. There are no restrictions on the driving method of the first sliding component 11. The first sliding component 11 only needs to be connected to the translation base plate 122 and be able to drive the translation base plate 122 to move in the first horizontal direction.

[0032] In one feasible implementation, the transfer mechanism 1 further includes a translation drive assembly 13, which is configured to drive the bearing assembly 12 to translate along a second horizontal direction, perpendicular to the first horizontal direction. Specifically, the movable frame 121 is slidably mounted on the translation base plate 122 via a slide rail module arranged along the second horizontal direction. In one embodiment, the translation drive assembly 13 includes a rack 131, a gear 132, and a first motor 133. The fixed end of the first motor 133 is connected to the movable frame 121, the gear 132 is mounted on the drive end of the first motor 133, and the rack 131 is fixedly mounted on the translation base plate 122 along the second horizontal direction and meshes with the gear 132. When the first motor 133 drives the gear 132 to rotate, the gear 132 moves along the second horizontal direction on the rack 131, thereby driving the movable frame 121 to translate along the second horizontal direction. In another embodiment, the translation drive assembly 13 includes a second motor, a screw, and a slider nut. One end of the slider nut is connected to the moving frame 121, and the other end is connected to the screw. The fixed end of the second motor is fixedly connected to the translation base plate, and the movable end of the second motor is connected to the screw. The second motor is configured to drive the moving frame 121 to translate along a second horizontal direction via the screw and the slider nut. By setting the translation drive assembly 13, the position of the entire battery string can be adjusted in the second horizontal direction, thereby ensuring that the battery string is transported to the welding station. In one feasible implementation, the gear 132 is a helical gear, and the rack 131 is a helical rack, with the teeth of the helical gear meshing obliquely with the teeth of the helical rack.

[0033] In one feasible implementation, the limiting component 2 includes a mounting frame 21 and elastic clamping members 22. The elastic clamping members 22 are arranged in a matrix on one side of the mounting frame 21. The positions of the elastic clamping members 22 correspond to or are offset from the welding points of the battery cells. The elastic clamping members 22 are configured to press the solder strips in the battery string to be welded onto the battery cells. The mounting frame 21 has clearance holes for the heat source of the heating mechanism 3 to pass through. In one embodiment, the elastic clamping members 22 correspond to the welding points on the battery cells, that is, the elastic clamping members 22 press the solder strips onto the welding points of the battery cells. The heating mechanism 3 heats the elastic clamping members 22, or the heating mechanism 3 heats the entire surface of the battery cells. The heat is transferred to the solder strips and battery cells at the welding points through the elastic clamping members 22, thereby achieving the curing of the solder strips and battery cells. In another embodiment, the elastic clamping member 22 is offset from the welding point on the battery cell; that is, the elastic clamping member 22 presses around the welding point, or the pressure head of the elastic clamping member 22 is designed as a hollow cylinder, with the welding point located at the center of the pressure head. The heating mechanism 3 welds the welding point using laser or other heating methods, thereby achieving the solidification of the solder strip and the battery cell. Optionally, the elastic clamping member 22 can adopt a clamping method such as an elastic pressure needle or an elastic pressure block. The elastic pressure needle or elastic pressure block can be made of metal or thermally conductive ceramic. The specific structure and material of the elastic clamping member are not limited here.

[0034] In one feasible implementation, the two ends of the carrier assembly 12 extending along the second horizontal direction are provided with positioning grooves for limiting the limiting assembly 3, and / or the ends of the carrier assembly 12 extending along the second horizontal direction are equipped with magnets for attracting and fixing the limiting assembly 3, the second horizontal direction being perpendicular to the first horizontal direction. The positioning grooves and magnets position the limiting assembly 3, ensuring that the battery string does not shift position when the transfer mechanism 1 transports the battery string. In actual production, one of the two positioning methods, positioning grooves and magnets, can be selected, or both methods can be used simultaneously. Of course, positioning pins or other positioning methods can be provided at both ends of the carrier assembly 12; no further limitations are placed on the positioning method of the carrier assembly 12 for the limiting assembly 3.

[0035] In one feasible embodiment, the transfer mechanism 1 further includes an opening and closing component 15 and a ribbon limiting component 14 disposed at both ends of the adsorption platform along a first horizontal direction. The ribbon limiting component 14 has a limiting groove corresponding to the position of the ribbon group. The driving end of the opening and closing component 15 is connected to the ribbon limiting component 14, and the opening and closing component 15 is configured to drive the ribbon limiting component 14 to open and close to clamp or release the ribbon located in the limiting groove. By setting the ribbon limiting component 14 and the opening and closing component 15, the ribbon can be further fixed, preventing the ribbon group from shifting due to inertia during the battery string implementation process.

[0036] See Figure 3 and Figure 4In one feasible embodiment, the opening and closing assembly 15 includes a lifting drive 151, a lifting plate 152, and a wedge block 153 mounted on the end of the adsorption platform 123. The welding strip limiting assembly 14 includes a first comb plate 141, a second comb plate 142, and two guide wheels 143. The two guide wheels 143 are respectively mounted on the first comb plate 141 and the second comb plate 142. The wedge block 153 is located between the two guide wheels 143. The fixed end of the lifting drive 151 is mounted on the translational base plate 122, and the movable end of the lifting drive 151 is connected to the lifting plate 152. The first comb plate 141 and the second comb plate 142 are translatably and alternately mounted on the lifting plate 152 along a second horizontal direction, which is perpendicular to the first horizontal direction. Specifically, the lifting plate 152 is slidably mounted on the movable frame 121 via a vertically mounted slide rail module. The lifting drive component 151 can be driven by a synchronous belt, cylinder, or motor, as long as it can drive the lifting plate 152 to move up and down. No further restrictions are placed on the driving method of the lifting drive component 152. Optionally, the first comb plate 141 and the second comb plate 142 are slidably mounted on the lifting plate 152 via a slide rail or sliding seat. A spring is provided between the first comb plate 141 and the second comb plate 142 and the slide rail or sliding seat. When the lifting drive component 151 drives the lifting plate 152 to rise, it simultaneously drives the first comb plate 141 and the second comb plate 142 to rise. The two guide wheels 143 roll upwards on the wedge block 153. Due to the design of the wedge block 153, which is wider at the top and narrower at the bottom, the distance between the two guide wheels 143 increases when they rise synchronously, thereby causing the first comb plate 141 and the second comb plate 142 to move along a second horizontal direction. The relative displacement in the direction of the limiting groove is such that the welding strip assembly can be placed into the limiting groove when the lifting drive 151 drives the lifting plate 152 to descend. Simultaneously, the first comb plate 141 and the second comb plate 142 descend, and the two guide wheels 143 roll down on the wedge block. As the two guide wheels 143 descend synchronously, their distance decreases, causing a relative displacement of the first comb plate 141 and the second comb plate 142 along the second horizontal direction. At this time, the limiting groove is in the closed state, and the welding strip assembly can be confined within the limiting groove. For example, the welding strip assembly can be clamped by the first comb plate 141 and the second comb plate 142. The spring design ensures that the first comb plate 141 and the second comb plate 142 are in a clamped state when no force is applied, i.e., the limiting groove is in the closed state, and also ensures the limiting effect of the limiting groove. In another embodiment, the opening and closing assembly 15 includes a double-headed cylinder, with a first comb plate 141 and a second comb plate 142 respectively mounted on the two drive ends of the double-headed cylinder. The double-headed cylinder synchronously controls the translation of the first comb plate 141 and the second comb plate 142 in the second horizontal direction.Of course, the opening and closing assembly 15 can also be driven by a motor, a hydraulic cylinder or a cam follower to move the first comb plate 141 and the second comb plate 142 in the second horizontal direction. Here, we will not limit the specific composition of the opening and closing assembly 15.

[0037] In one feasible implementation, the heating mechanism 3 includes at least one of a laser welder, an infrared welding lamp box, an LED welding lamp box, and a UV lamp. The heating mechanism 3 can select different heating methods depending on the working conditions, offering strong compatibility. Infrared welding lamp boxes and LED welding lamp boxes perform full-surface welding; infrared welding lamp boxes offer good heating uniformity and low cost; LED welding lamp boxes cause less damage to the battery cells, have high energy conversion efficiency, and heat up quickly; laser welders can weld the welding points of the battery cells one by one or simultaneously, requiring only precise welding of the welding points, thus eliminating the need for full-surface welding of the battery cells and preventing warping. When UV adhesive on the battery string to be heated needs to be cured, the heating mechanism 3 can select a UV lamp. It is evident that the battery string conveying and welding device designed in this application is compatible with multiple welding methods. Of course, the heating mechanism 3 can employ other heating methods, and no specific heating mode is limited here.

[0038] See also Figure 1In one feasible implementation, the transfer mechanism 1 is provided in two sets, arranged along a second horizontal direction. The two sets of transfer mechanisms 1 are configured to move alternately between the loading station and the welding station. The second horizontal direction is perpendicular to the first horizontal direction. The heating mechanism 3 includes a first heating part and a second heating part, both of which are located above the welding station and configured to heat and solidify the battery strings to be welded on the two sets of transfer mechanisms 1 respectively. The heating power of the first heating part and the second heating part can be adjusted independently. Alternatively, the heating mechanism 3 includes a first welding component and a second sliding component. The first welding component is installed on the driving end of the second sliding component, and the second sliding component is configured to drive the first welding component to reciprocate above the two sets of transfer mechanisms. Alternatively, the heating mechanism 3 includes a second welding component and a third sliding component. The second welding component is installed on the driving end of the third sliding component, and the third sliding component is configured to drive the second welding component to move synchronously with the battery strings to be welded carried by the transfer mechanism along the second horizontal direction. By setting up two sets of alternating transfer mechanisms, work efficiency is improved. The heating mechanism 3, including a first heating section and a second heating section, or a heating mechanism 3 including a first welding component and a second sliding component, ensures that the heating machine 3 heats and cures the battery strings on the two sets of transfer mechanisms separately, improving the curing effect. The design of the heating mechanism 3 including a second welding component and a third sliding component allows the second welding component to move synchronously with the battery strings to be welded, thereby extending the heating time and improving welding efficiency. The design of the heating mechanism 3 including a first welding component and a second sliding component reduces the use of light sources. By using a first welding component, the battery strings on the two sets of transfer mechanisms 1 can be heated and cured separately, reducing heat release and light pollution. Different forms of heating mechanism 3 can be set according to actual conditions; no specific form of heating mechanism 3 is limited here. In another embodiment, the size of the second welding component can be larger than the planar size of the battery string to be welded. After the battery string to be welded is transported to the welding station by the transfer mechanism 1, the third sliding component drives the second welding component to move synchronously with the battery string carried by the transfer mechanism 1 above the battery string in the second horizontal direction. This can extend the heating time of the battery string and improve welding efficiency. In one feasible embodiment, when the transfer mechanism 1 carries and transports the battery string to be welded through the welding station, the heating mechanism 3 located above the welding station may not need to be raised or lowered, reducing the time loss caused by the successive raising and lowering of the heating mechanism 3, thereby improving welding efficiency. Optionally, the heating mechanism 3 may include a lifting component and a first welding component. The driving end of the lifting component is connected to the first welding component. Before the equipment is in operation, the lifting component can drive the first welding component to be raised or lowered to adjust the heating height of the first welding component, thereby adjusting the heating effect of the heating mechanism 3. After adjustment, the position of the first welding component on the lifting component remains fixed.

[0039] This application provides a sufficiently detailed and specific description. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within its protection scope. The scope of protection claimed in this application is defined by the claims, not by the above descriptions in the embodiments. Without contradiction, some optional components in one embodiment can also be used in another embodiment, and some preferred structures of the same component in one embodiment are also applicable to another embodiment. Furthermore, there may be slight differences in the wording of the names of certain components in different embodiments; these slight differences will not affect the understanding of the technical solution of the present invention by those skilled in the art.

Claims

1. A battery string conveying and welding device, characterized in that, The battery string conveying and welding device includes a transfer mechanism, a limiting component, and a heating mechanism, wherein: The transfer mechanism includes a first sliding component and a carrying component. The carrying component is driven by the drive end of the first sliding component. The carrying component has an adsorption hole. The carrying component is configured to carry and adsorb at least one set of battery strings to be welded arranged along a first horizontal direction. The first sliding component is configured to drive the carrying component carrying the battery strings to be welded to pass through the welding station at a constant speed along the first horizontal direction. The battery strings to be welded include a number of battery cells and a group of welding strips arranged above or below the battery cells according to a predetermined arrangement. Several sets of limiting components are placed above the battery string to be welded, and each set of limiting components is configured to press a corresponding set of welding strips and battery cells in the battery string to be welded. The heating mechanism is located above the welding station and is configured to heat the battery cells and welding strips on the carrier component as the carrier component passes through the welding station at a constant speed.

2. The battery string conveying and welding device as described in claim 1, characterized in that, The supporting component includes a movable frame, a sliding base plate, and several adsorption platforms. The lower end of the movable frame is adjustablely mounted on the sliding base plate. The sliding base plate is connected to the driving end of the first sliding component. Several adsorption platforms are arranged side by side on the upper end of the movable frame. Each adsorption platform is used to adsorb one of the battery cells. The adsorption holes are opened on the adsorption platforms.

3. The battery string conveying and welding device as described in claim 2, characterized in that, The transfer mechanism further includes a translation drive component, which is configured to drive the bearing component to translate along a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction; The translation drive assembly includes a rack, a gear, and a first motor. The fixed end of the first motor is connected to the movable frame, the gear is mounted on the drive end of the first motor, and the rack is fixedly mounted on the translation base plate along the second horizontal direction and meshes with the gear. Alternatively, the translation drive assembly includes a second motor, a screw, and a slider nut. One end of the slider nut is connected to the movable frame, and the other end of the slider nut is connected to the screw. The fixed end of the second motor is fixedly connected to the translation base plate, and the movable end of the second motor is connected to the screw. The second motor is configured to drive the movable frame to translate along the second horizontal direction via the screw and the slider nut.

4. The battery string conveying and welding device as described in claim 3, characterized in that, The gear is a helical gear, the rack is a helical rack, and the teeth of the helical gear mesh obliquely with the teeth of the helical rack.

5. The battery string conveying and welding device as described in claim 1, characterized in that, The limiting component includes a mounting frame and elastic clamping components. The elastic clamping components are arranged in a matrix on one side of the mounting frame. The position of the elastic clamping components corresponds to or is offset from the position of the welding point of the battery cell. The elastic clamping components are configured to press the welding strip group and the battery cell in the battery string to be welded together. The mounting frame has clearance holes for the heat source of the heating mechanism to pass through.

6. The battery string conveying and welding device as described in claim 1, characterized in that, The bearing component extends along the second horizontal direction and has positioning grooves at both ends for limiting the limiting component, and / or the bearing component extends along the second horizontal direction and has magnets installed at the ends for attracting and fixing the limiting component, wherein the second horizontal direction is perpendicular to the first horizontal direction.

7. The battery string conveying and welding device as described in claim 2, characterized in that, The transfer mechanism further includes an opening and closing component and a welding strip limiting component disposed at both ends of the adsorption platform along the first horizontal direction. The welding strip limiting component is provided with a limiting groove corresponding to the position of the welding strip group. The drive end of the opening and closing component is connected to the welding strip limiting component for transmission, and the opening and closing component is configured to drive the welding strip limiting component to open and close to clamp or release the welding strip located in the limiting groove.

8. The battery string conveying and welding device as described in claim 7, characterized in that, The opening and closing assembly includes a lifting drive, a lifting plate, and a wedge block installed at the end of the adsorption platform. The welding strip limiting assembly includes a first comb plate, a second comb plate, and two guide wheels. The two guide wheels are respectively installed on the first comb plate and the second comb plate. The wedge block is located between the two guide wheels. The fixed end of the lifting drive is installed on the translation base plate, and the movable end of the lifting drive is connected to the lifting plate. The first comb plate and the second comb plate are installed alternately on the lifting plate in a translational manner along a second horizontal direction, which is perpendicular to the first horizontal direction.

9. The battery string conveying and welding device as described in claim 1, characterized in that, The heating mechanism includes at least one of a laser welder, an infrared welding light box, an LED welding light box, and a UV lamp.

10. The battery string conveying and welding apparatus as described in any one of claims 1-9, characterized in that, The transfer mechanism is provided in two sets, which are arranged along the second horizontal direction. The two sets of transfer mechanisms are configured to move alternately between the loading station and the welding station. The second horizontal direction is perpendicular to the first horizontal direction. The heating mechanism includes a first heating part and a second heating part. Both the first heating part and the second heating part are disposed above the welding station and are configured to heat and solidify the battery strings to be welded on the two sets of the transfer mechanism, respectively. The heating power of the first heating part and the second heating part can be adjusted independently. Alternatively, the heating mechanism includes a first welding assembly and a second sliding assembly, wherein the first welding assembly is mounted on the drive end of the second sliding assembly, and the second sliding assembly is configured to drive the first welding assembly to reciprocate above the two sets of transfer mechanisms; Alternatively, the heating mechanism includes a second welding assembly and a third sliding assembly, wherein the second welding assembly is mounted on the drive end of the third sliding assembly, and the third sliding assembly is configured to drive the second welding assembly to move synchronously along the second horizontal direction following the battery string to be welded carried by the transfer mechanism.

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