Battery piece conveying device
By designing a cell conveying device that includes a rotary drive and a conveying unit, the problem of low handling efficiency when cells flow from two conveying lines to one conveying line is solved, realizing fast and efficient handling of cells and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI AOTE WEIXURUI TECH CO LTD
- Filing Date
- 2025-02-28
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, when solar cells are transferred from two conveyor lines to one conveyor line, the handling efficiency is low, resulting in insufficient production capacity.
A battery cell conveying device is adopted, including a conveying mechanism, a discharge conveyor line and at least two loading conveyor lines. The device utilizes a rotary drive and a conveying unit to achieve rapid rotational transport of battery cells. The device uses a lifting unit and a picking unit to pick up and release battery cells between conveyor lines at different heights. The device uses suction holes or suction cups to achieve stable adsorption and avoids space to ensure transport efficiency.
This improved the handling speed of solar cells between adjacent conveyor lines, achieving efficient cell handling and increasing production capacity.
Smart Images
Figure CN224132208U_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this application relate to the field of solar cell manufacturing technology, and more specifically, this application relates to a cell conveying device. Background Technology
[0002] In the production and processing of solar cells, various processing equipment are typically involved. Some of these equipment can process two cells simultaneously fed in parallel on two conveyor lines, while others can only process cells fed sequentially on a single conveyor line. These devices are usually mixed and arranged in an automated production line, so cells sometimes need to be transferred from two lines to a single line for further transport. Current technology generally uses a conveying mechanism with dual suction cups to simultaneously pick up two cells from the two conveyor lines, rotate and move them laterally onto a single conveyor line, and finally unload both cells. Because the reciprocating lateral movement takes a relatively long time, the conveying speeds of the two lines are low, resulting in low merging efficiency and impacting production capacity. Utility Model Content
[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a battery cell conveying device to ensure a fast transport rhythm of battery cells between adjacent conveyor lines and to achieve high-efficiency battery cell transport.
[0004] To solve the above problems, the technical solution adopted in this application is as follows:
[0005] This application provides an example of a solar cell conveying device, which includes a conveying mechanism, a discharge conveyor line, and at least two loading conveyor lines. The at least two loading conveyor lines are arranged in parallel and are both used to convey solar cells in the same direction. The conveying mechanism is located beside the loading conveyor lines and includes a rotary drive and at least two conveying parts. Each conveying part is located on the drive end of the rotary drive. The conveying parts are used to acquire at least two solar cells that are conveyed in parallel from each loading conveyor line. After acquiring a solar cell from one conveying part, the rotary drive drives the conveying part to rotate and move to the discharge conveyor line to release the solar cell.
[0006] The solar cell conveying device provided in this application includes a conveying mechanism rotary drive and at least two conveying units. The conveying units are mounted on the drive end of the rotary drive, and the at least two conveying units move alternately at the end of the loading conveyor line and the beginning of the unloading conveyor line when driven by the rotary drive. Each conveying unit is used to obtain solar cells conveyed in parallel from each loading conveyor line and rotates to the unloading conveyor line under the drive of the rotary drive, thus completing the confluence of the parallel conveyed solar cells.
[0007] In some embodiments, the conveying unit includes a lifting unit and a picking unit. The lifting unit is disposed on the drive end of the rotary drive member, and the picking unit is disposed on the drive end of the lifting unit. The lifting unit is used to drive the picking unit to move up and down in the vertical direction. The picking unit picks up at least two parallel battery cells from the feeding conveyor line and releases them onto the discharging conveyor line.
[0008] The lifting mechanism helps accommodate the handling of solar cells between conveyor lines at different heights. The lifting mechanism allows for height adjustment of the pickup unit, thereby adjusting the distance between the pickup unit and the solar cells to be picked up, facilitating cell pickup and handling.
[0009] In some embodiments, the lower surface of the pickup unit includes a plurality of adsorption zones arranged along a direction away from the rotating drive member, each adsorption zone being provided with an adsorption hole or a suction cup; when the pickup unit is driven above the feeding conveyor line, each adsorption zone adsorbs a battery cell on a feeding conveyor line.
[0010] The solar cells are picked up by adsorbing them onto the upper surface of the cells using suction holes and suction cups. This method causes less damage to the solar cells and allows for the simultaneous pickup of multiple solar cells.
[0011] In some embodiments, the upper surface of the pickup unit includes a plurality of support areas arranged along a direction away from the rotating drive member, each support area being provided with an adsorption hole; when the pickup unit is driven to below the feeding conveyor line, each support area supports a battery cell on a corresponding feeding conveyor line.
[0012] By placing the adsorption holes on the upper surface of the adsorption part, the lower surface of the battery cell can be adsorbed, which can avoid damage to the upper surface of the battery cell and prevent the battery cell from falling off when moving.
[0013] In some embodiments, the pickup unit includes a connector and two forks respectively mounted at both ends of the connector, the two forks extending in a direction away from the rotary drive member, and the connector is mounted at the drive end of the lifting unit.
[0014] Two forked teeth can more stably adsorb solar cells. The adsorption forked teeth can be straight strips, with two forked teeth spaced apart, and the adsorption pores arranged in rows on the forked teeth, resulting in more stable adsorption of solar cells.
[0015] In some embodiments, clearance spaces are formed at the end of the feeding conveyor and the beginning of the discharging conveyor. The clearance spaces are used to avoid the cell picking action performed by the transport unit on the feeding conveyor or the cell release action performed on the discharging conveyor.
[0016] The provision of clearance space facilitates the picking and releasing of battery cells by the handling department, thereby improving processing efficiency.
[0017] In some embodiments, a rotary drive drives each transport unit to move circumferentially in a horizontal plane, so that each transport unit moves sequentially from the end of each loading conveyor line to the beginning of each unloading conveyor line.
[0018] The circular motion of the transport unit within a plane facilitates the alternating adsorption and release of solar cells from the loading conveyor line to the unloading conveyor line. This method of movement only requires that the end of the loading conveyor line and the beginning of the unloading conveyor line be located along the circular motion path of the transport unit to achieve the transport and release of solar cells. For example, the unloading conveyor line can be located to one side of the loading conveyor line and parallel to it.
[0019] In some embodiments, the conveying mechanism includes four conveying units, which are equally spaced circumferentially. When one conveying unit moves to the end of the feeding conveyor line, another conveying unit moves to the beginning of the discharging conveyor line.
[0020] The four transport units are evenly spaced. Each time, the rotary drive rotates the adsorption assembly 90° in the plane, ensuring that one transport unit is always at the beginning of the discharge conveyor line to release the solar cells, while another transport unit is at the end of the loading conveyor line to pick them up. The adsorption and release actions of the solar cells performed by the two transport units are synchronized, thus accelerating the transport rhythm and improving transport efficiency.
[0021] In some embodiments, each feeding conveyor is used to transport groups of battery cells, each group including one battery cell located on each feeding conveyor. The battery cells on the discharge conveyor are arranged sequentially along the conveying direction. The transport unit picks up a group of battery cells from each feeding conveyor and rotates in a plane driven by a rotary drive member, and then releases the entire group of battery cells picked up onto the discharge conveyor.
[0022] After the transport unit picks up a set of battery cells (e.g., two battery cells side by side), the rotary drive unit drives the transport unit to rotate a certain angle (including but not limited to 90°) in the plane. At this time, the transport unit releases the set of battery cells, and the two battery cells side by side are arranged in a single-cell sequence on the discharge conveyor line.
[0023] In some embodiments, each feeding conveyor is a stepping conveyor, which alternates between a stepping movement state and a stepping pause state. When the stepping conveyor is in the stepping pause state, the transport unit located above the end of the feeding conveyor performs the action of picking up the battery cells.
[0024] The stepping pause state of the stepping conveyor line facilitates more stable picking of battery cells. Attached Figure Description
[0025] Figure 1This is a schematic diagram of the structure of a battery cell conveying device provided in an embodiment of this application;
[0026] Figure 2 for Figure 1 A schematic diagram of the middle section structure;
[0027] Figure 3 This is a schematic diagram of the handling mechanism.
[0028] In the picture:
[0029] 110. First feeding conveyor line; 120. Second feeding conveyor line;
[0030] 200. Handling mechanism; 210. Rotary drive component; 220. Handling section; 221. Lifting section; 222. Picking section; 222a. Supporting area; 222b. Connecting component; 222c. Fork tooth;
[0031] 300. Outgoing conveyor line; 400. Printing table; 500. Transfer mechanism; 600. Unloading conveyor line. Detailed Implementation
[0032] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.
[0033] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, an embodiment of this application provides a battery cell conveying device, which includes a first feeding conveyor line 110, a second feeding conveyor line 120, a handling mechanism 200, and a discharge conveyor line 300.
[0034] The first feeding conveyor line 110 and the second feeding conveyor line 120 are arranged in parallel and both convey the battery cells in the same direction. The battery cells can be conveyed in parallel in a one-to-one correspondence by means of the two feeding conveyor lines constructed in this way.
[0035] A cell transport mechanism 200 is located beside the two aforementioned feeding conveyor lines. The transport mechanism 200 includes a rotary drive 210 and a transport section 220. The transport section 220 is located on the drive end of the rotary drive 210, and there are at least two transport sections 220. Each transport section 220 is used to acquire two parallel transported cells from the first feeding conveyor line 110 and the second feeding conveyor line 120. After a transport section 220 acquires a cell, the rotary drive 210 drives the transport section 220 to rotate and move to the discharge conveyor line 300 to release the cell, thereby transferring the two parallel transported cells to the discharge conveyor line 300 for transport. The parallel transported cells are then merged. This method speeds up the cell transport rhythm and improves transport efficiency.
[0036] The solar cells that have completed their assembly on the discharge conveyor line 300 can undergo related processing equipment. For example, by configuring a printing table 400 adjacent to the discharge conveyor line 300 and a transfer mechanism 500 spanning the discharge conveyor line 300 and the printing table 400, the transfer mechanism 500 transfers the solar cells from the discharge conveyor line 300 to the printing table 400. The printing table 400 then moves below the screen printing mechanism (not shown in the figure), where the screen printing mechanism performs screen printing on the solar cells on the printing table 400. After screen printing, the solar cells are then transferred back to the discharge conveyor line 300 by the coordinated actions of the printing table 400 and the transfer mechanism 500, and continue to be transported to the next process. It is understood that when continuing to transport to the next process, another handling mechanism 200 can be configured to transport the solar cells from the discharge conveyor line 300 to another conveyor line (e.g., the unloading conveyor line 600).
[0037] It should be noted that the installation position of the conveying mechanism 200 is not limited in this embodiment, as long as the conveying mechanism 200 can pick up the battery cells from the parallel feeding conveyor lines and release the picked-up battery cells to the discharge conveyor line 300 after rotation and movement. In addition, in this embodiment, the rotation angle by which the rotary drive 210 drives the conveying unit 220 to rotate can be any angle, such as 30°, 70°, 90°, 100°, etc. This angle is determined according to the arrangement of the discharge conveyor line 300 with the first feeding conveyor line 110 and the second feeding conveyor line 120, as well as the position of the conveying unit 220 in picking up and releasing the battery cells.
[0038] In practical implementation, there can be three or more parallel feeding conveyor lines. The solar cells conveyed on each feeding conveyor line are arranged in a one-to-one parallel configuration, thus allowing three or more solar cells to be conveyed in parallel. Correspondingly, the handling unit 220 can pick up three or more parallel solar cells from the parallel feeding conveyor lines. For ease of understanding, the following description uses two parallel feeding conveyor lines as an example to further illustrate the specific embodiments of this application. For implementations with three or more feeding conveyor lines, those skilled in the art can learn from the description in this application.
[0039] Continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the conveying unit 200 includes a lifting unit 221 and a picking unit 222. The lifting unit 221 is disposed on the driving end of the rotary drive member 210, and the picking unit 222 is disposed on the driving end of the lifting unit 221. The lifting unit 221 is used to drive the picking unit 222 to move up and down in the vertical direction, so that the picking unit 222 is suitable for conveying battery cells between conveyor lines of different heights. Specifically, the lifting unit 221 can drive the picking unit 222 to adjust its height according to the height of the first feeding conveyor line 110 and the second feeding conveyor line 120, so that the distance between the picking unit 22 and the battery cell to be adsorbed is more suitable for stable picking. The picking unit 222 then picks up two parallel battery cells from the first feeding conveyor line 110 and the second feeding conveyor line 120. Then, the lifting unit 221 drives the picking unit 222 to adjust its height according to the height of the discharge conveyor line 300, so as to reliably release the picked battery cells onto the bearing surface of the discharge conveyor line 300. This avoids damage to the battery cells or deviation in placement due to a large height difference between the picking unit 222 and the bearing surface of the discharge conveyor line 300 during battery cell release. In short, with the help of the lifting unit, battery cell handling is more convenient and stable.
[0040] In some embodiments, a plurality of adsorption zones are formed on the lower surface of the pickup unit 222. These adsorption zones are arranged along a direction away from the rotary drive member 210. Each adsorption zone is provided with an adsorption hole. When the pickup unit 222 is driven above the feeding conveyor line, each adsorption zone, through its adsorption hole, adsorbs a battery cell on a corresponding feeding conveyor line. The adsorption effect of the adsorption hole on the battery cell enables the pickup of the battery cell, and this method causes minimal damage to the battery cell. Alternatively, each adsorption zone may also be provided with a suction cup, which can be a Bernoulli suction cup or a vacuum suction cup. Each adsorption zone uses the suction cup to adsorb a battery cell on a feeding conveyor line, and the suction cup can adsorb the upper surface of the battery cell.
[0041] In other embodiments, the upper surface of the pickup unit 222 has a plurality of support areas 222a, which are arranged along a direction away from the rotary drive member 210. Each support area 222a is provided with an adsorption hole. When the pickup unit 222 is driven below the two feeding conveyor lines, each support area 222a supports a battery cell on one feeding conveyor line. In this embodiment, the adsorption hole is provided on the upper surface of the pickup unit 222 to adsorb the lower surface of the battery cell. This avoids direct contact with the upper surface of the battery cell, which could damage the related processing on the upper surface of the battery cell. Furthermore, adsorbing the lower surface of the battery cell prevents the battery cell from falling off during movement.
[0042] It should be noted that the adsorption areas on the lower surface of the pickup section 222 and the support area 222a on the upper surface of the pickup section 222 are only different in their positions on the pickup section 222. One is on the upper surface and the other is on the lower surface. Both can achieve the pickup and release of the battery cell.
[0043] Continue to refer to Figure 1 , Figure 2 and Figure 3 As shown, the pickup unit 222 includes a connector 222b and forks 222c. The forks 222c can be straight-extending strips, for example, extending in a direction away from the rotating drive member 210. In a specific implementation, two forks 222c are provided, spaced apart, and respectively installed at both ends of the connector 222b. Adsorption holes are arranged in rows on the forks 222c. The connector 222b is installed at the drive end of the lifting unit 221. The two forks 222c constructed in this way can more stably adsorb the battery cells.
[0044] In practical implementation, to facilitate the picking and releasing of battery cells by the conveying unit 220 with various structural forms, clearance spaces can be formed at the beginning of the discharge conveyor line 300 and at the ends of the two loading conveyors. For example, the clearance space can be a hollow structure provided at the beginning of the discharge conveyor line 300. The hollow structure facilitates the insertion of the fork 222c into the beginning of the discharge conveyor line 300 and allows the fork 222c to descend to a position at the same level as the bearing surface of the discharge conveyor line 300, facilitating the release of the battery cells. Similarly, the clearance space can be a hollow structure provided at the ends of the two loading conveyors. This clearance space is used to avoid the battery cell picking operation performed by the conveying unit at the ends of the two loading conveyors or the battery cell release operation performed at the beginning of the discharge conveyor line.
[0045] The following describes an implementation example of the handling mechanism 200 in conjunction with the accompanying drawings.
[0046] Reference Figure 3 As shown, and in combination Figure 1 and Figure 2 The rotary drive 210 drives each transport unit 220 to move in a circular motion along a horizontal plane. This horizontal circular motion allows each transport unit 220 to move sequentially from the end of the first loading conveyor line 110 and the second loading conveyor line 120 to the beginning of the unloading conveyor line 300. This facilitates the alternating pickup and release of battery cells from the loading conveyor line to the unloading conveyor line 300. With this movement method, the pickup and release of battery cells can be achieved as long as the ends of the first loading conveyor line 110 and the second loading conveyor line 120 and the beginning of the unloading conveyor line 300 are all located along the aforementioned circular motion path. For example, the unloading conveyor line 300 can be located on one side of the first loading conveyor line 110 and the second loading conveyor line 120 and parallel to both loading conveyor lines, with the beginning of the unloading conveyor line 300 adjacent to the ends of the first loading conveyor line 110 and the second loading conveyor line 120.
[0047] Continue to refer to Figure 3 As shown, the conveying mechanism 200 includes four conveying sections 220, which are equally spaced circumferentially, i.e., evenly spaced around the outer periphery of the rotary drive 210. With this configuration, when one conveying section 220 moves to the end of the two feeding conveyors, another conveying section 220 moves to the beginning of the discharging conveyor 300. Each time the rotary drive 210 drives a conveying section 220 to rotate 90° in the plane, it ensures that one conveying section 220 is always at the beginning of the discharging conveyor 300 to release the solar cells, while another conveying section 220 is at the end of the two feeding conveyors to pick up the solar cells. This speeds up the solar cell conveying process and improves the conveying efficiency.
[0048] Reference Figure 1 and Figure 2 As shown, the first feeding conveyor line 110 and the second feeding conveyor line 120 are used to transport groups of battery cells. Each group includes one battery cell located on each feeding conveyor line. The battery cells on the discharge conveyor line 300 are arranged sequentially along the conveying direction. The handling unit 220 picks up a group of battery cells (e.g., two side-by-side battery cells) from the first feeding conveyor line 110 and the second feeding conveyor line 120, and after being driven by the rotary drive unit 210 to rotate a certain angle in the plane, the picked-up group of battery cells is released onto the discharge conveyor line 300. The two side-by-side battery cells are thus arranged in a single-cell sequential arrangement on the discharge conveyor line.
[0049] For the first feeding conveyor line 110 and the second feeding conveyor line 120 described above, step-type conveyor lines are preferred. These step-type conveyor lines alternate between a stepping movement state and a stepping pause state. When the first feeding conveyor line 110 and the second feeding conveyor line 120 are in the stepping pause state, the conveying unit 220 located above the ends of the first feeding conveyor line 110 and the second feeding conveyor line 120 picks up the battery cells. The stepping pause state of the step-type conveyor line facilitates more stable picking up of the battery cells. The discharge conveyor line 300 is also preferably a step-type conveyor line, and when it is in the stepping pause state, the conveying unit 220 releases the picked-up battery cells onto the discharge conveyor line 300.
[0050] In the foregoing description of this application, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "linked" should be interpreted broadly. For example, the term "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this application, those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0051] Based on the above description of this application, those skilled in the art will also understand that the terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are based on the orientation or positional relationship shown in the accompanying drawings of this application. They are only for the purpose of facilitating the explanation of the solution of this application and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the solution of this application.
[0052] Furthermore, the terms "first" or "second," etc., used in this application to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as explicitly or implicitly indicating relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, or more, unless otherwise explicitly specified.
[0053] While numerous embodiments of this application have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will arise for those skilled in the art without departing from the spirit and intent of this application. It should be understood that various alternatives to the embodiments of this application described herein may be employed in the practice of this application. The appended claims are intended to define the scope of protection of this application and therefore cover equivalents or alternatives within the scope of these claims.
Claims
1. A battery cell conveying device, characterized by, The battery cell conveying device includes a transport mechanism, a discharge conveyor line, and at least two loading conveyor lines. The at least two loading conveyor lines are arranged in parallel and are both used to transport battery cells in the same direction. The transport mechanism is located beside the loading conveyor line. The transport mechanism includes a rotary drive and at least two transport parts. Each transport part is located on the drive end of the rotary drive. The transport part is used to pick up at least two parallel-transported battery cells from each of the loading conveyor lines. After picking up a battery cell from one of the transport parts, the rotary drive is used to drive the transport part to rotate and move to the discharge conveyor line to release the battery cell.
2. The cell conveying device according to claim 1, wherein The conveying unit includes a lifting unit and a picking unit. The lifting unit is disposed on the driving end of the rotary drive member, and the picking unit is disposed on the driving end of the lifting unit. The lifting unit is used to drive the picking unit to move up and down in the vertical direction. The picking unit picks up at least two parallel battery cells from the feeding conveyor line and releases them onto the discharging conveyor line.
3. The cell conveying device according to claim 2, wherein The lower surface of the pickup unit includes several adsorption zones arranged along a direction away from the rotary drive member, and each adsorption zone is provided with an adsorption hole or a suction cup. When the picking unit is driven above the feeding conveyor line, each of the adsorption zones adsorbs a battery cell from one feeding conveyor line.
4. The cell conveying device according to claim 2, wherein The upper surface of the pickup unit includes several support areas arranged along a direction away from the rotary drive member, and each support area is provided with an adsorption hole. When the picking unit is driven below the feeding conveyor line, each of the supporting areas supports a battery cell on the feeding conveyor line.
5. The cell conveying device of claim 2, wherein The pickup unit includes a connector and two forks respectively installed at both ends of the connector. The two forks extend in a direction away from the rotary drive member. The connector is installed at the drive end of the lifting unit.
6. The cell conveying device of claim 1, wherein, Both the end of the feeding conveyor line and the beginning of the discharging conveyor line have clearance spaces, which are used to avoid the battery cell picking action performed by the transport unit on the feeding conveyor line or the battery cell release action performed on the discharging conveyor line.
7. The cell conveying device of claim 1, wherein, The rotary drive unit drives each of the conveying units to move circumferentially in the horizontal plane, so that each of the conveying units moves sequentially from the end of each of the feeding conveyors to the beginning of the discharging conveyor.
8. The cell conveying device according to any one of claims 1 to 7, characterized in that The conveying mechanism includes four conveying units, which are equally spaced along the circumference. When one conveying unit moves to the end of the feeding conveyor line, another conveying unit moves to the beginning of the discharging conveyor line.
9. The cell conveying device according to any one of claims 1 to 7, characterized in that Each of the feeding conveyor lines is used to transport groups of battery cells. Each group includes one battery cell located on each of the feeding conveyor lines. The battery cells on the discharging conveyor lines are arranged sequentially along the conveying direction. The transport unit picks up a group of battery cells from each of the feeding conveyor lines and rotates in the plane driven by the rotary drive component before releasing the entire group of battery cells onto the discharging conveyor line.
10. The cell conveying device according to any one of claims 1 to 7, characterized in that Each of the feeding conveyor lines is a stepping conveyor line. The stepping conveyor line alternately moves between a stepping movement state and a stepping pause state. When the stepping conveyor line is in the stepping pause state, the conveying unit located above the end of the feeding conveyor line picks up the battery cells.