Electrode contact assembly and laser processing device

Abstract

The utility model discloses an electrode contact assembly and a laser processing device, and belongs to the technical field of photovoltaic cell processing equipment. The electrode contact assembly comprises a bearing piece, the bearing piece is provided with a battery piece bearing face, a groove is formed in the battery piece bearing face, a plurality of first adsorption holes and a plurality of through holes for probes to pass through are formed in the bottom of the groove, the first adsorption holes are connected with a negative pressure air source, and a plurality of supporting blocks are arranged at the groove bottom of the groove. When the battery piece covers the battery piece bearing surface, at least two edges of the battery piece are lapped on the edge of the groove, and the supporting block is used for supporting the battery piece. According to the invention, uniform adsorption can be applied to the battery piece, multiple supports are provided at the same time, subfissure or fragmentation of the battery piece is not easily caused, and the probe is not easily damaged.

Description

Technical Field

[0001] The embodiments of this application relate to the field of photovoltaic cell processing equipment technology, and more specifically, this application relates to an electrode contact assembly and a laser processing device. Background Technology

[0002] Solar cells are the core component of solar cell modules. After the grid lines are formed on the solar cell, the contact resistance between the grid lines and the cell is often high due to poor ohmic contact. The industry generally optimizes this contact resistance by strengthening the ohmic contact through laser scanning. Specifically, an external power supply and a laser are used. The positive and negative terminals of the external power supply are electrically connected to the positive and negative grid lines of the solar cell through probes, respectively, and a deflection voltage is applied to the solar cell. Simultaneously, a laser beam is emitted and scans along the grid lines on the solar cell. The semiconductor material of the solar cell absorbs the light energy and generates charge carriers. Under the applied deflection voltage, a large number of charge carriers flow to the grid lines, generating resistive heating at areas of poor ohmic contact between the grid lines and the cell. This reduces the contact resistance between the grid lines and the semiconductor, thereby improving the performance of the solar cell.

[0003] In the above optimization process, the solar cells are usually adsorbed and supported by suction cups. However, in order to avoid electrical connection structures such as probes, only a small number of suction cups can usually be used, such as 3 to 6. This results in uneven adsorption force applied by the suction cups to the solar cells. When the probe is driven to rise and contact the solar cells, the solar cells are prone to microcracks or breakage. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the prior art. To this end, this application provides an electrode contact assembly and a laser processing device, which generate a uniform adsorption force on the supported solar cell, making it less likely to cause microcracks in the solar cell.

[0005] To solve the above problems, the technical solution adopted in this application is as follows:

[0006] In a first aspect, an example of this application provides an electrode contact assembly including a carrier having a battery cell bearing surface, a groove formed on the battery cell bearing surface, a plurality of first adsorption holes and a plurality of through holes for probes to pass through the bottom of the groove, the first adsorption holes being connected to a negative pressure gas source, and a plurality of support blocks being provided at the bottom of the groove, wherein when the battery cell covers the battery cell bearing surface, at least two edges of the battery cell rest on the edge of the groove, and the support blocks are used to support the battery cell.

[0007] When the electrode contact assembly provided in this application receives the battery cell, the battery cell covers the bearing surface and the groove is closed. The first adsorption hole applies negative pressure to the cavity formed by the closure, which generates a uniform adsorption force. The battery cell is less likely to deform downwards, thus reducing the risk of microcracks and helping to ensure that the probe is not easily damaged. When the battery cell is adsorbed, it fits tightly with the support block, which further prevents the battery cell from deforming and cracking due to adsorption.

[0008] According to some examples of the first aspect of this application, the height of the support block is the same as the depth of the groove, and at least a portion of the support block has a second adsorption hole formed thereon, which is connected to a negative pressure air source.

[0009] The second adsorption hole on the support block can help adsorb and fix the battery cells, preventing the battery cells from moving horizontally.

[0010] According to some examples of the first aspect of this application, the support block divides the groove to form at least two isolation slots, each isolation slot being used to cover a battery cell.

[0011] The groove is divided into at least two isolation slots by the support block, and each isolation slot can hold a battery cell by negative pressure adsorption.

[0012] According to some examples of the first aspect of this application, each through hole is provided with a ceramic needle sleeve, and the upper end of the ceramic needle sleeve extends upward to be flush with the battery cell bearing surface.

[0013] The electrode contact assembly also includes a probe plate, which is slidably and vertically disposed below the carrier. The probe plate is provided with two connecting electrodes and multiple probes. The probes correspond one-to-one with the ceramic needle sleeve and are slidably disposed in the ceramic needle sleeve. Each probe is electrically connected to one of the two connecting electrodes.

[0014] The ceramic needle sleeve keeps the probe insulated from the carrier, preventing direct electrical contact between the probe and the carrier, and the ceramic needle sleeve can further provide uniform support to the solar cell.

[0015] According to some examples of the first aspect of this application, the electrode contact assembly further includes at least one guide pin and springs corresponding to the number of guide pins. The first end of each guide pin is fixedly disposed on the lower surface of the carrier, and the second end of each guide pin passes through the probe plate. Each spring is sleeved on the guide pin, the upper end of each spring abuts against the carrier, and the lower end of each spring abuts against the probe plate. The second end of the guide pin is also provided with a limiting structure, so that the probe plate is slidably disposed below the carrier.

[0016] The guide pin and spring work together to enable the probe plate to slide and be elastically reset, and to make the probe slide inside the ceramic needle sleeve, alternately being in electrical contact with or out of contact with the electrode of the battery cell. The ceramic needle sleeve can prevent leakage.

[0017] According to some examples of the first aspect of this application, an upper push plate is installed on the lower surface of the probe plate, and a lifting module is also provided below the upper push plate. A lower push plate and two external power electrodes respectively corresponding to the two connecting electrodes are installed at the driving end of the lifting module. When the lifting module drives the lower push plate and the external power electrodes to rise, the two external power electrodes form an electrical connection with the two connecting electrodes respectively, and the lower push plate rises and pushes the upper push plate so that the probe plate is pushed up until the probe passes through the ceramic needle sleeve to contact the grid line of the battery cell.

[0018] The lifting module can drive the lower push plate and the external power supply electrode to rise, so that the external power supply electrode is connected to the connection electrode of the probe plate. The lower push plate pushes the upper push plate, which in turn raises the probe plate until the probe passes through the corresponding ceramic needle sleeve and touches the grid line of the battery cell. The external power supply can then apply a reverse voltage to the battery cell.

[0019] In a second aspect, an example of this application provides a laser processing apparatus, which includes a loading mechanism, a positioning mechanism, a feeding mechanism, a laser processing mechanism, and a unloading mechanism, wherein:

[0020] The feeding mechanism is located near the feeding position, the photo-taking position, and the feeding position. The positioning mechanism is located at the photo-taking position. The feeding position is used to carry multiple groups of battery cells arranged sequentially along the first direction. Each group of battery cells includes at least two battery cells arranged side by side. Each battery cell is pre-determined to be either a qualified battery cell or a unqualified battery cell. The feeding mechanism is used to pick up the multiple groups of battery cells currently carried at the feeding position and transport the multiple groups of battery cells to the positioning mechanism. The positioning mechanism is used to obtain the position information of each battery cell in the multiple groups of battery cells and adjust the position of each battery cell according to the position information.

[0021] The feeding mechanism includes a rotary drive assembly and at least one electrode contact assembly as described above, which is disposed on the drive end of the rotary drive assembly. The carrier carrying multiple sets of battery cells is driven by the rotary drive assembly to pass through the loading position, the processing position, and the unloading position in sequence. After the positioning mechanism adjusts the position of each battery cell, the loading mechanism is also used to transport multiple sets of battery cells to the carrier at the loading position. The laser processing mechanism is disposed at the processing position. The laser processing mechanism is used to perform laser contact optimization processing on qualified battery cells in the multiple sets of battery cells at the processing position. After the laser contact optimization processing is completed, the carrier is also used to transfer the multiple sets of battery cells at the processing position to the unloading position.

[0022] The unloading mechanism is located near the unloading position. The unloading mechanism picks up multiple sets of battery cells located at the unloading position and transports them to the unloading receiving mechanism corresponding to the qualified and unqualified battery cells respectively.

[0023] The laser processing apparatus provided in this application can simultaneously pick up multiple sets of solar cells using a loading mechanism and transport them to a positioning mechanism. After the positioning mechanism determines the position information of each solar cell, it is transported to a carrier at the loading position. The carrier then transports the multiple sets of solar cells to the processing position. At the processing position, the laser processing mechanism performs contact optimization processing on the pre-determined qualified solar cells. After the contact optimization processing is completed, the carrier transports the multiple sets of solar cells to the unloading position. The unloading mechanism then picks up the multiple sets of solar cells located at the unloading position and transports them to the unloading receiving mechanism corresponding to the qualified and unqualified solar cells. This achieves synchronous transport and contact optimization processing of multiple solar cells, shortening the solar cell processing cycle. This application is applicable to large-scale solar cell processing, especially to laser optimization processing of half-cell solar cells with laser scanning to enhance ohmic contact.

[0024] According to some examples of the second aspect of this application, the feeding mechanism includes a first conveying assembly and a second conveying assembly. The first conveying assembly includes a first rotary drive and a first pick-up component disposed on the drive end of the first rotary drive, wherein:

[0025] The first rotating component drives the first picking component to move between the feeding position and the imaging position. When the first picking component moves to the feeding position, it picks up multiple sets of battery cells located at the feeding position. When the first picking component moves to the imaging position, it releases the picked-up multiple sets of battery cells onto the positioning mechanism.

[0026] The second conveying assembly is used to pick up multiple sets of battery cells that have been positioned and adjusted from the positioning mechanism and convey them to the carrier at the loading position. The second conveying assembly includes a linear motor and a suction component. The suction component is located at the drive end of the linear motor and is driven by the linear motor to reciprocate between the positioning mechanism and the loading position; or,

[0027] The second transport component has the same structure as the first transport component.

[0028] The first rotating component drives the first picking component to transport multiple sets of solar cells to the positioning mechanism. After the positioning mechanism determines the position information of the grid lines on each solar cell, the second transport component transports them to the carrier at the loading position. When the carrier moves to the processing position, the laser processing mechanism performs laser scanning based on the position information, thereby implementing more precise contact optimization processing. A linear motor drives the reciprocating movement of the adsorption component, facilitating accurate and stable transport of the solar cells from the positioning mechanism to the carrier. The second transport component can also adopt the same structure as the first transport component depending on the spatial layout requirements. The first picking component of the first transport component and the second picking component of the second transport component move independently and operate synchronously, improving the transport efficiency of the solar cells and helping to accelerate the contact optimization processing operation.

[0029] According to some examples of the second aspect of this application, when the second transport assembly has the same structure as the first transport assembly, the movement trajectory of the first pick-up part of the second transport assembly is on the same circle as the movement trajectory of the first pick-up part of the first transport assembly.

[0030] The movement trajectories of the first and second transport components in picking up the battery cells are on the same circle, which facilitates the arrangement of related structures and the stable connection of transport actions. It also allows for a more compact spatial layout.

[0031] According to some examples of the second aspect of this application, when the second conveying component has the same structure as the first conveying component, when the first pick-up part of the first conveying component moves between the feeding position and the photographing position, the angle corresponding to the arc length traversed by each movement is 90°; and / or, when the first pick-up part of the second conveying component moves between the photographing position and the loading position, the angle corresponding to the arc length traversed by each movement is 180°.

[0032] Arranging the feeding position, photo position, and loading position around the angle corresponding to the rotation arc length is beneficial for making full use of space to arrange the corresponding structures.

[0033] According to some examples of the second aspect of this application, the feeding mechanism includes a second rotating member and a second picking member. The second rotating member drives the second picking member to move sequentially to the feeding position, the photo taking position, and the feeding position, so that the second picking member can transport multiple sets of battery cells from the feeding position to the positioning mechanism. After the positioning mechanism adjusts the position of the multiple sets of battery cells, the multiple sets of battery cells are transported from the positioning mechanism to the carrier at the feeding position.

[0034] The second rotating component drives the second picking component to move sequentially between the feeding position, the photo taking position, and the loading position, which facilitates efficient handling of the battery cells.

[0035] According to some examples of the second aspect of this application, the loading position, processing position, unloading position and idle position are distributed at equal intervals on the circular moving track of the carrier. The feeding mechanism includes 4 carriers, which are evenly distributed on the circular moving track. Each time the rotary drive assembly drives all carriers to rotate 90°, each carrier rotates from one of the loading position, idle position, processing position and unloading position to the next position.

[0036] The loading, vacant, processing, and unloading positions are evenly distributed along a circular trajectory centered on the rotation center of the carrier. A drive unit rotates the carrier, allowing it to move from one of these positions to the next. After multiple groups of solar cells are transported to the carrier at the loading position, the carrier can then be driven to the processing position for contact optimization processing. The four evenly distributed carriers can alternate between the loading, vacant, processing, and unloading positions, improving the handling efficiency of the solar cells and helping to shorten the contact optimization processing cycle for the entire batch of cells.

[0037] According to some examples of the second aspect of this application, the unloading mechanism includes an unloading rotating component and an unloading conveying component disposed on the driving end of the unloading rotating component. The unloading conveying component is provided with a Bernoulli suction cup, which corresponds one-to-one with a battery cell in multiple sets of battery cells, and each Bernoulli suction cup independently adsorbs and releases a battery cell. The unloading receiving mechanism includes a first unloading receiving mechanism and a second unloading receiving mechanism. The first unloading receiving mechanism is used to receive qualified battery cells, and the second unloading receiving mechanism is used to receive unqualified battery cells. The unloading rotating component drives the unloading conveying component to move between the unloading position, the first unloading receiving mechanism, and the second unloading receiving mechanism. When the unloading conveying component moves to the unloading position, it picks up multiple sets of battery cells located at the unloading position. When the unloading conveying component moves to the first unloading receiving mechanism, it releases qualified battery cells from multiple sets of battery cells. When the unloading conveying component moves to the second unloading receiving mechanism, it releases unqualified battery cells from multiple sets of battery cells.

[0038] The unloading rotating component drives the unloading transport component to rotate. The unloading transport component picks up multiple sets of battery cells that have undergone contact optimization treatment from the unloading position with the help of Bernoulli suction cups. When the unloading transport component moves to the first unloading receiving mechanism and the second unloading receiving mechanism, it releases the qualified battery cells and the unqualified battery cells respectively.

[0039] According to some examples of the second aspect of this application, the positioning mechanism includes multiple transparent platforms, a position recognition camera, and multiple position adjustment mechanisms. Each transparent platform is respectively set on the drive end of each position adjustment mechanism, and each transparent platform is used to carry one battery cell from multiple sets of battery cells. The position recognition camera is set below the transparent platform and shoots upward to obtain the position information of each battery cell in the multiple sets of battery cells. Each position adjustment mechanism adjusts the position of the battery cell carried on the transparent platform according to the corresponding position information.

[0040] A position recognition camera is positioned below the transparent platform to easily identify the position of the battery cells carried by each transparent platform. The position adjustment mechanism can adjust the position of the transparent platform, thereby adjusting each battery cell to a predetermined position to facilitate contact optimization processing. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the electrode contact assembly provided in the embodiments of this application;

[0042] Figure 2 for Figure 1 A schematic diagram of the structure in which the middle support component, probe plate, and upper push plate are assembled;

[0043] Figure 3 for Figure 1 A schematic diagram of the structure of the bearing component and probe plate in conjunction;

[0044] Figure 4 for Figure 1 A schematic diagram of the structure of the middle probe plate and the upper push plate in combination;

[0045] Figure 5 for Figure 1 A schematic diagram of the structure of the middle lifting module and the lower push plate;

[0046] Figure 6 This is a schematic diagram of a feeding mechanism provided in an embodiment of this application;

[0047] Figure 7 A top view schematic diagram of the first laser processing apparatus provided in the embodiments of this application;

[0048] Figure 8 A top view schematic diagram of the second laser processing apparatus provided in the embodiments of this application;

[0049] Figure 9 This is a top view schematic diagram of a third laser processing device provided in an embodiment of this application.

[0050] In the picture:

[0051] 100. Electrode contact assembly;

[0052] 110. Receiving component; 111. Bearing surface; 112. Groove; 113. First adsorption hole; 114. Support block; 1141. Second adsorption hole; 115. Ceramic needle sleeve;

[0053] 120. Probe plate; 121. Probe;

[0054] 130. Guiding components;

[0055] 140. Upper push plate; 150. Lower push plate; 160. External power supply electrode; 170. Lifting module;

[0056] 201. Feeding position; 202. Photo taking position; 203. Loading position; 204. Empty position; 205. Processing position; 206. Unloading position;

[0057] 300. Conveying mechanism;

[0058] 400. Feeding mechanism; 410. First conveying assembly; 411. First picking component; 420. Second conveying assembly; 431. Second rotating component; 432. Second picking component;

[0059] 500. Positioning mechanism;

[0060] 600. Feeding mechanism; 610. Rotary drive assembly;

[0061] 700. Laser processing mechanism;

[0062] 800. Feeding mechanism;

[0063] 900. Material receiving mechanism; 910. First material receiving mechanism; 920. Second material receiving mechanism. Detailed Implementation

[0064] 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.

[0065] like Figure 1 , Figure 2 and Figure 3As shown, an electrode contact assembly 100 includes a carrier 110, which can be constructed as a plate-like structure with a certain thickness. The carrier 110 has a battery cell carrier surface 111, and a groove 112 is formed on the battery cell carrier surface 111. The bottom of the groove 112 is provided with a plurality of first adsorption holes 113 and a plurality of through holes for probes to pass through. The first adsorption holes 113 are connected to a negative pressure gas source. A plurality of support blocks 114 are provided at the bottom of the groove 112. When the battery cell covers the battery cell carrier surface 111, at least two edges of the battery cell rest on the edges of the groove 112. The support blocks 114 are used to support the battery cell, specifically to support the battery cell suspended in the middle part of the groove 112. When the electrode contact assembly 100 receives a battery cell, the battery cell covers the bearing surface 111, sealing the top of the groove 112. A negative pressure is applied to the sealed cavity using the first adsorption hole 113, generating a uniform adsorption force. This prevents the battery cell from deforming downwards, causing microcracks or fragmentation, and also helps ensure the probe is not easily damaged. It is understood that the bearing 110 can receive one or two battery cells, as long as the battery cell covers the groove 112, sealing the top of the groove. Furthermore, to further prevent the battery cell from deforming downwards and breaking, a support block 114 is provided to support the battery cell. When the battery cell is adsorbed, it fits tightly against the support block 114, and the support of the support block 114 prevents the battery cell from deforming downwards. A second adsorption hole 1141, also connected to the negative pressure gas source, can be formed on at least a portion of the support block 114 to assist in adsorbing and fixing the battery cell. Understandably, depending on the actual situation, it is also possible to form a second adsorption hole 1141 on all support blocks 114.

[0066] Optionally, to maintain a consistent support height, the height of the support block 114 is the same as the groove depth of the groove 112, so that the edges of the support block 114 and the groove 112 jointly support the battery cell on the battery cell bearing surface 111.

[0067] In some implementations, reference continues. Figure 3Multiple support blocks 114 can be arranged along a straight line within the groove 112, thereby dividing the groove 112 into two isolation slots. Each isolation slot is used to cover a battery cell, and each isolation slot can stably support a battery cell by negative pressure adsorption. Alternatively, a single battery cell can be covered on the groove 112, with the suspended portion of the battery cell supported by the multiple support blocks 114 arranged along a straight line. It is understood that multiple support blocks 114 can be arranged not only in a straight line, but also in a cross shape, and can be arranged in many different ways within the groove 112, dividing the groove 112 into three or four isolation slots. The position of the multiple isolation slots can be adjusted as needed. When multiple support blocks 114 are arranged along a straight line within the groove 112, they can be arranged continuously without gaps to make the isolation slots relatively independent, or they can be arranged at certain intervals to maintain communication between the isolation slots.

[0068] To facilitate the probe's passage through the through-hole and electrical contact with the grid lines of the solar cell, an insulating ceramic needle sleeve 115 is provided in each through-hole. The upper end of the ceramic needle sleeve 115 extends upward to be flush with the solar cell support surface 110, and the lower end of the ceramic needle sleeve 115 extends downward through the through-hole towards the support member 110. This provides uniform auxiliary support to the solar cell, preventing the suspended portion of the solar cell from concave deformation when it is adsorbed. The electrode contact assembly 100 also includes a probe plate 120, which is slidably and vertically disposed below the support member 110. The probe plate 120 is provided with... The electrode is connected to multiple probes 121. The probes 121 are slidably disposed in the ceramic needle sleeves 115, corresponding one-to-one with each other. Each probe 121 is electrically connected to one of the two connecting electrodes. The probe plate 120 is integrated below the carrier 110 through a liftable and sliding mounting method. The ceramic needle sleeves 115 keep the probes and the carrier 110 insulated, avoiding direct electrical contact between the probes and the carrier 110, which could lead to production accidents. The ceramic needle sleeves 115 also provide vertical guidance for the probes 121, making it easy for the probes 121 to make accurate electrical contact with the grid lines of the solar cell.

[0069] To ensure accurate insertion of the probe into the ceramic needle sleeve 115, the following implementation method is also provided: The electrode contact assembly 100 further includes at least one guide assembly 130. For example, each guide assembly 130 includes a guide pin and a spring. Specifically, the first end of each guide pin is fixedly disposed on the lower surface of the support member 110, and the second end of each guide pin passes through the probe plate 120. Each spring is sleeved on the guide pin, with the upper end of each spring abutting against the support member 110 and the lower end of each spring abutting against the probe plate 120. The second end of the guide pin is also provided with a limiting structure, so that the probe plate 120 can be slidably and vertically disposed below the support member 110. The guide pin can be used to realize the directional lifting and lowering of the probe plate 120, which helps to limit the sliding of the probe within the ceramic needle sleeve 115. The spring facilitates the elastic reset of the probe plate 120 after it is driven to slide.

[0070] Combination Figures 1 to 5 As shown, in order to facilitate the lifting and sliding of the probe plate 120, an upper push plate 140 can be installed on the lower surface of the probe plate 120. The upper push plate 140 has a concave space, so while it is fixedly connected to the lower surface of the probe plate 120, it can also avoid the probe 121 installed on the probe plate 120. Below the upper push plate 140, a lifting module 170 and a lower push plate 150 are also provided. The lower push plate 150 is installed on the driving end of the lifting module 170. An external power electrode 160 is also installed on the driving end of the lifting module 170 and is driven by the driving end of the lifting module 170. The external power electrode 160 rises to achieve electrical connection with the connecting electrode. The lower push plate 150 is driven to rise and push the upper push plate 140 so that the probe plate 120 is pushed up until the probe passes through the ceramic needle sleeve 115 to contact the grid line of the battery cell. This design is based on the following considerations: the lifting module 170 can drive the lower push plate 150 and the external power electrode 160 to rise, so that the external power electrode 160 is electrically connected to the connection electrode of the probe plate 120. The lower push plate 150 pushes the upper push plate 140, thereby causing the probe plate 120 to rise until the probe 121 passes through the corresponding ceramic needle sleeve 115 and abuts against the grid line of the battery cell. The external power supply can then apply a reverse voltage to the battery cell.

[0071] The above is a description of an embodiment of the electrode contact assembly 100 provided in this application. The following is a description in conjunction with... Figure 6 The application of the electrode contact assembly 100 described above in this application in the feeding mechanism 600 is described in detail.

[0072] Reference Figure 6As shown, the feeding mechanism 600 includes a rotary drive assembly 610 and an electrode contact assembly 100 described above in this application. The electrode contact assembly 100 is driven by the rotary drive assembly 610, so that the electrode contact assembly 100 can rotate between various workstations. Therefore, the electrode contact assembly 100 can carry battery cells (one, two, or more) and transfer the battery cells to various workstations. It is understood that the rotary drive assembly 610 may include a rotating shaft and a rotating disk. The rotating shaft is connected to the center of the rotating disk to drive the rotating disk to rotate, and the electrode contact assembly 100 is disposed on the rotating disk, thereby realizing the driving of the electrode contact assembly 100.

[0073] Embodiments of this application also provide a laser processing apparatus, which further describes the application of the feeding mechanism 600, as described below. Figure 7 , Figure 8 and Figure 9 Detailed introduction.

[0074] Reference Figure 7 , Figure 8 and Figure 9 The laser processing device includes a loading mechanism 400, a positioning mechanism 500, a feeding mechanism 600, a laser processing mechanism 700, and a unloading mechanism 800. The components of each of these mechanisms are described below.

[0075] Continue to refer to Figure 7 , Figure 8 and Figure 9 As shown, the feeding mechanism 400 is positioned near the feeding station 201, the photographing station 202, and the loading station 203. The feeding station 201 carries multiple groups of battery cells arranged sequentially along a first direction (e.g., the conveying direction during battery cell feeding). Each group of battery cells includes at least two battery cells arranged side-by-side along the first direction, and each battery cell in each group is pre-determined to be either a qualified or unqualified battery cell. The feeding mechanism 400 picks up the multiple groups of battery cells currently carried by the feeding station 201 and transports them to the positioning mechanism 500 located at the photographing station 202. It is understood that, in specific implementations, the feeding station 201 may carry two, three, or more groups of battery cells arranged sequentially along the first direction, and the number of battery cells arranged side-by-side in each group may also be two, three, or more.

[0076] Continue to refer to Figure 7 , Figure 8 and Figure 9 As shown, the positioning mechanism 500 is set at the camera position 202. The positioning mechanism 500 is used to obtain the position information of each battery cell in multiple groups of battery cells and adjust the position of each battery cell according to the position information.

[0077] Continue to refer to Figure 7 , Figure 8 and Figure 9 and combined Figure 6 As shown, the feeding mechanism 600 includes a rotary drive assembly 610 and an electrode contact assembly 100 disposed on the drive end of the rotary drive assembly 610. The structure of the electrode contact assembly 100 is as described above, and at least one electrode contact assembly 100 is provided on the drive end of the rotary drive assembly 610. The carrier 110 is used to carry multiple sets of battery cells and the carrier 110 is driven by the rotary drive assembly 610 to pass through the loading position 203, the processing position 205, and the unloading position 206 in sequence.

[0078] Continue to refer to Figure 7 , Figure 8 and Figure 9 and combined Figure 6 As shown, after the positioning mechanism 500 determines the position information of each battery cell and adjusts the position, the loading mechanism 400 is also used to transport multiple sets of battery cells to the carrier 110 at the loading position 203. The laser processing mechanism 700 is set at the processing position 205. When multiple sets of battery cells move to the processing position 205 with the carrier 110, the laser processing mechanism 700 performs laser contact optimization processing on the qualified battery cells in the multiple sets of battery cells. After the laser contact optimization processing is completed, the carrier 110 is also used to transfer the multiple sets of battery cells to the unloading position 206.

[0079] Continue to refer to Figure 7 , Figure 8 and Figure 9 As shown, the unloading mechanism 800 is located near the unloading position 206. The unloading mechanism 800 picks up multiple sets of battery cells located at the unloading position 206 and transports the multiple sets of battery cells to the unloading receiving mechanism 900 corresponding to the pre-determined result. Specifically, the unloading receiving mechanism 900 is transported to the unloading receiving mechanism 900 corresponding to the qualified battery cells and the unqualified battery cells respectively.

[0080] Based on the laser processing apparatus provided in this application, the loading mechanism 400 can simultaneously pick up multiple sets of solar cells and transport them to the positioning mechanism 500. After the positioning mechanism 500 adjusts and determines the position information of each solar cell, it is then transported to the carrier 110 at the loading position 203. The carrier 110 transports the multiple sets of solar cells to the processing position 205. At the processing position 205, the laser processing mechanism 700 performs contact optimization processing on the pre-determined qualified solar cells. After the contact optimization processing is completed, the carrier 110 transports the multiple sets of solar cells to the unloading position 206. The unloading mechanism 800 then picks up the multiple sets of solar cells located at the unloading position 206 and transports them to the unloading receiving mechanism 900 corresponding to the pre-determined results. In this way, the synchronous transport and contact optimization processing of multiple solar cells are realized, shortening the solar cell processing cycle. This application is applicable to the processing of large batches of solar cells, especially to the optimization processing of laser scanning enhanced ohmic contact of half-cell solar cells. Furthermore, based on the detailed description of the aforementioned electrode contact assembly 100 embodiment, the laser processing device described above has the same beneficial effects as the aforementioned electrode contact assembly 100. Stable adsorption helps to realize the rotation of multiple battery cells at each station and the contact of the probe 121 and the implementation of laser scanning.

[0081] Continue to refer to Figure 7 , Figure 8 and Figure 9 As shown, it can be understood that in specific implementations, the laser processing device can also be configured with a conveying mechanism 300 for feeding solar cells to the feeding position 201, and a detection mechanism for detecting each solar cell before it is conveyed to the feeding position 201, thereby enabling pre-judgment of each solar cell. Specifically, the laser processing device also includes a conveying mechanism 300 and a detection mechanism. The conveying mechanism 300 is used to convey groups of solar cells to the feeding position 201 along a first direction. Each group of solar cells includes at least two solar cells arranged side by side. The detection mechanism is located on the conveying path of the conveying mechanism 300 and before the feeding position 201. The detection mechanism is used to detect the solar cells conveyed by the conveying mechanism 300 to determine whether each solar cell is a qualified or unqualified solar cell. With the help of the conveying mechanism 300, multiple groups of solar cells can be efficiently conveyed to the feeding position 201, and based on the detection results, the solar cells to be subjected to contact optimization treatment (qualified solar cells) are determined.

[0082] Continue to refer to Figure 7 , Figure 8 and Figure 9As shown, it can be understood that a straightening mechanism can also be set at the feeding position 201. When multiple groups of solar cells are at the feeding position 201, the straightening mechanism is used to straighten each solar cell in the multiple groups of solar cells. After the straightening mechanism has straightened the solar cells, the feeding mechanism 400 picks up the multiple groups of solar cells. Setting multiple feeding positions 201 on the conveying path and configuring a corresponding straightening mechanism for each feeding position 201 can straighten the position of the solar cells in the same group at each feeding position 201, which facilitates accurate picking and handling, as well as position information determination and laser scanning.

[0083] The following will combine Figure 7 , Figure 8 and Figure 9 Specific implementation examples of this application are introduced with regard to the feeding mechanism 400, the bearing component 110, the unloading mechanism 800, the conveying mechanism 300, and the positioning mechanism 500.

[0084] Regarding the feeding mechanism 400

[0085] As one implementation method, refer to Figure 7 As shown, the feeding mechanism 400 includes a first conveying component 410 and a second conveying component 420. The first conveying component 410 includes a first rotary drive and a first pick-up component 411 disposed on the drive end of the first rotary drive. The first rotary drive can be a component similar to a rotary shaft and a rotary disk. The first pick-up component 411 (e.g., a Bernoulli suction cup) is mounted on the rotary disk. The rotary disk drives the first pick-up component 411 to move between the feeding position 201 and the imaging position 202. When the first pick-up component 411 moves to the feeding position 201, it picks up multiple sets of battery cells located at the feeding position 201. When the first pick-up component 411 moves to the imaging position 202, it releases the picked-up multiple sets of battery cells onto the positioning mechanism 500. The second conveying component 420 is used to pick up multiple sets of battery cells that have been positioned and adjusted from the positioning mechanism 500 and convey them to the carrier 110 located at the feeding position 203. The first rotating component drives the first picking component 411 to transport multiple sets of battery cells to the positioning mechanism 500. After the positioning mechanism 500 adjusts the position of the battery cells and determines the position information of the grid lines on each battery cell, the second transport component 420 transports them to the carrier 110 at the loading position 203. When the carrier 110 moves to the processing position 205, the laser processing mechanism 700 can perform laser scanning based on the position information, thereby implementing more precise contact optimization processing.

[0086] For example, continue to refer to Figure 7As shown, the second conveying assembly 420 includes a linear motor and an adsorption component (e.g., a Bernoulli suction cup). The adsorption component is located at the drive end of the linear motor and is driven by the linear motor to reciprocate between the positioning mechanism 500 and the loading position 203. By driving the reciprocating movement of the adsorption component with a linear motor, the battery cells can be accurately and stably conveyed from the positioning mechanism 500 to the carrier 110.

[0087] For example, refer to Figure 8 As shown, the second transport assembly 420 has the same structure as the first transport assembly 410. That is, the second transport assembly 420 also includes a first rotary drive and a first pick-up member 411 disposed on the drive end of the first rotary drive. The first pick-up member 411 in the second transport assembly 420 picks up multiple sets of battery cells that have been positioned and adjusted from the positioning mechanism 500 and transports them to the carrier 110 located at the loading position 203. The fact that the second transport assembly 420 adopts the same structure as the first transport assembly 410 allows the rotation centers of the two first pick-up members 411 to be concentric. Therefore, the spatial arrangement is more compact. Furthermore, the first pick-up member 411 of the first transport assembly 410 and the second pick-up member 432 of the second transport assembly 420 move independently and operate synchronously, which improves the transport efficiency of battery cells and helps to speed up the operation rhythm of contact optimization processing. Furthermore, when the second transport assembly 420 has the same structure as the first transport assembly 410, the movement trajectory of the first pickup member 411 of the second transport assembly 420 is on the same circumference as the movement trajectory of the first pickup member 411 of the first transport assembly 410. The movement trajectories of the first transport assembly 410 and the second transport assembly 420 in picking up the battery cells are on the same circumference, which facilitates the arrangement of related structures and the stable connection of transport actions. Furthermore, in this example, it is also possible to rotate around an angle corresponding to the arc length (e.g., ...). Figure 8 The feeding position 201, the photographing position 202, and the loading position 203 are arranged at 90° and 180° respectively, so as to make full use of the space for the arrangement of the corresponding structures. For example, when the first picking member 411 of the first conveying component 410 moves between the feeding position 201 and the photographing position 202, the arc length traversed by each movement corresponds to an angle of 90°. As another example, when the first picking member 411 of the second conveying component 420 moves between the photographing position 202 and the loading position 203, the arc length traversed by each movement corresponds to an angle of 180°.

[0088] As another implementation method, refer to Figure 9As shown, the loading mechanism 400 includes a second rotating component 431 and a second picking component 432. The second rotating component 431 can be a component similar to a rotating shaft and a rotating disk. The second picking component 432 (e.g., a Bernoulli suction cup) is mounted on the rotating disk. The rotating disk drives the second picking component 432 to move sequentially to the feeding position 201, the photographing position 202, and the loading position 203, so that the second picking component 432 transports multiple sets of battery cells from the feeding position 201 to the positioning mechanism 500. After the positioning mechanism 500 adjusts the position of the multiple sets of battery cells, it transports the multiple sets of battery cells from the positioning mechanism 500 to the carrier 110 at the loading position 203. By using the second rotating component 431 to drive the second picking component 432 to move sequentially between the feeding position 201, the photographing position 202, and the loading position 203, the efficient handling of battery cells can be achieved.

[0089] Regarding the load-bearing component 110

[0090] Continue to refer to Figure 7 , Figure 8 and Figure 9 As shown, the feeding mechanism 600 includes four carriers 110. The loading position 203, processing position 205, unloading position 206 and idle position 204 are equally distributed on the circular moving track of the carriers 110. The four carriers 110 are evenly distributed on the circular moving track. When the rotary drive assembly 610 drives all carriers 110 to rotate 90° each time, each carrier 110 rotates from one of the loading position 203, idle position 204, processing position 205 and unloading position 206 to the next position. The loading position 203, idle position 204, processing position 205, and unloading position 206 are evenly distributed along a circular trajectory centered on the rotation center of the carrier 110. The carrier 110 is driven to rotate by a drive unit, allowing it to move from one of these positions to the next. After multiple groups of solar cells are transported to the carrier 110 at the loading position 203, the carrier 110 can then be driven to the processing position 205 for contact optimization processing. The evenly distributed four carriers 110 can alternate between the loading position 203, idle position 204, processing position 205, and unloading position 206, improving the handling efficiency of the solar cells and helping to shorten the contact optimization processing cycle for the entire batch of solar cells.

[0091] Regarding the conveyor mechanism 300

[0092] The conveying mechanism 300 includes a conveyor line, a material box, and a conveying and handling unit. The material box is located on both sides of the conveyor line. The conveying and handling unit is used to transport the solar cells from the conveyor line to the material box, and / or to remove the solar cells from the material box and transport them to the conveyor line. The coordination of the conveyor line, material box, and conveying and handling unit facilitates adaptation to different process requirements, enabling direct transport of solar cells for inspection, pick-up and handling, contact optimization treatment, etc., or storage of solar cells in the material box followed by transport to the conveyor line for inspection, pick-up and handling, contact optimization treatment, etc.

[0093] Regarding positioning mechanism 500

[0094] The positioning mechanism 500 includes multiple transparent platforms, a position recognition camera, and multiple position adjustment mechanisms. Each transparent platform is mounted on the drive end of a position adjustment mechanism, and each transparent platform carries one battery cell from multiple groups of battery cells. The position recognition camera is positioned below the transparent platform and looks upward to capture the position information of each battery cell in the multiple groups of battery cells. Each position adjustment mechanism adjusts the position of the battery cell carried on the transparent platform using the corresponding position information. The position recognition camera positioned below the transparent platform facilitates the identification of the position of the battery cell carried on each transparent platform. The position adjustment mechanism can adjust the position of the transparent platform, thereby adjusting each battery cell to a predetermined position for contact optimization processing. Optionally, the position adjustment mechanism can use a UVW adjustment platform.

[0095] Regarding the material feeding mechanism 800

[0096] The unloading mechanism 800 includes an unloading rotating component and an unloading conveying component disposed on the drive end of the unloading rotating component. The unloading conveying component is equipped with Bernoulli suction cups, each corresponding to a battery cell in a set of multiple battery cells, and each Bernoulli suction cup independently adsorbs and releases a battery cell. The unloading receiving mechanism 900 includes a first unloading receiving mechanism 901 and a second unloading receiving mechanism 902. The first unloading receiving mechanism 901 is used to receive qualified battery cells, and the second unloading receiving mechanism 902 is used to receive unqualified battery cells. The unloading rotating component drives the unloading conveying component to carry the adsorbed multiple sets of battery cells between the unloading position 206, the first unloading receiving mechanism 901, and the second unloading receiving mechanism 902. When the transport component moves to the unloading position 206, the unloading transport component picks up multiple sets of battery cells located at the unloading position 206 (the multiple sets of battery cells move to the unloading position 206 along with the carrier 100); subsequently, the multiple sets of battery cells move in the space above the first unloading receiving mechanism 901 and the second unloading receiving mechanism 902, and when the unloading transport component moves to the first unloading receiving mechanism 901, the unloading transport component releases qualified battery cells from the multiple sets of battery cells, and the qualified battery cells fall to the first unloading receiving mechanism 901; when the unloading transport component moves to the second unloading receiving mechanism 902, the unqualified battery cells from the multiple sets of battery cells are released, and the unqualified battery cells fall to the second unloading receiving mechanism 902.

[0097] The unloading rotating component drives the unloading transport component to rotate. The unloading transport component picks up multiple sets of battery cells that have undergone contact optimization treatment from the unloading position 206 with the help of a Bernoulli suction cup. When the unloading transport component moves to the first unloading receiving mechanism 900 and the second unloading receiving mechanism 900, it releases qualified battery cells and unqualified battery cells respectively.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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. An electrode contact assembly, characterized in that, The device includes a carrier having a battery cell bearing surface with a groove formed thereon. The bottom of the groove has a plurality of first adsorption holes and a plurality of through holes for probes to pass through. The first adsorption holes are connected to a negative pressure air source. The bottom of the groove has a plurality of support blocks. When the battery cell covers the battery cell bearing surface, at least two edges of the battery cell rest on the edge of the groove. The support blocks are used to support the battery cell.

2. The electrode contact assembly according to claim 1, characterized in that, The height of the support block is the same as the depth of the groove, and at least a portion of the support block has a second adsorption hole, which is connected to a negative pressure air source.

3. The electrode contact assembly according to claim 2, characterized in that, The support blocks divide the groove to form at least two isolation slots, each of which is used to cover a battery cell.

4. The electrode contact assembly according to claim 1, characterized in that, Each of the through holes is provided with a ceramic needle sleeve, and the upper end of the ceramic needle sleeve extends upward to be flush with the supporting surface of the battery cell; The electrode contact assembly further includes a probe plate, which is slidably and vertically disposed below the carrier. The probe plate is provided with two connecting electrodes and multiple probes. The probes correspond one-to-one with the ceramic needle sleeve and are slidably disposed in the ceramic needle sleeve. Each probe is electrically connected to one of the two connecting electrodes.

5. The electrode contact assembly according to claim 4, characterized in that, The electrode contact assembly further includes at least one guide pin and springs corresponding to the number of guide pins. The first end of each guide pin is fixedly disposed on the lower surface of the carrier, and the second end of each guide pin passes through the probe plate. Each spring is sleeved on the guide pin, with the upper end of each spring abutting against the carrier and the lower end of each spring abutting against the probe plate. The second end of the guide pin is also provided with a limiting structure, so that the probe plate is slidably disposed below the carrier.

6. The electrode contact assembly according to claim 4, characterized in that, An upper push plate is mounted on the lower surface of the probe plate, and a lifting module is also provided below the upper push plate. A lower push plate and two external power electrodes corresponding to the two connecting electrodes are mounted on the driving end of the lifting module. When the lifting module drives the lower push plate and the external power electrodes to rise, the two external power electrodes form an electrical connection with the two connecting electrodes respectively. The lower push plate rises and pushes the upper push plate so that the probe plate is pushed up until the probe passes through the ceramic needle sleeve to contact the grid lines of the battery cell.

7. A laser processing device, characterized in that, The laser processing device includes a loading mechanism, a positioning mechanism, a feeding mechanism, a laser processing mechanism, and a unloading mechanism, wherein: The feeding mechanism is located near the feeding position, the photo-taking position, and the feeding position. The positioning mechanism is located at the photo-taking position. The feeding position is used to carry multiple groups of battery cells arranged sequentially along the first direction. Each group of battery cells includes at least two battery cells arranged side by side. Each battery cell is pre-determined to be either a qualified battery cell or a unqualified battery cell. The feeding mechanism is used to pick up the multiple groups of battery cells currently carried by the feeding position and transport the multiple groups of battery cells to the positioning mechanism. The positioning mechanism is used to obtain the position information of each battery cell in the multiple groups of battery cells and adjust the position of each battery cell according to the position information. The feeding mechanism includes a rotary drive assembly and at least one electrode contact assembly as described in any one of claims 1 to 6 disposed on the drive end of the rotary drive assembly. The carrier carrying the multiple sets of battery cells is driven by the rotary drive assembly to sequentially pass through the loading position, the processing position, and the unloading position. After the positioning mechanism adjusts the position of each battery cell, the loading mechanism is further used to transport the multiple sets of battery cells to the carrier located at the loading position. The laser processing mechanism is disposed at the processing position. The laser processing mechanism is used to perform laser contact optimization processing on qualified battery cells among the multiple sets of battery cells located at the processing position. After the laser contact optimization processing is completed, the carrier is further used to transfer the multiple sets of battery cells located at the processing position to the unloading position. The unloading mechanism is located near the unloading position. The unloading mechanism picks up the multiple sets of battery cells located at the unloading position and transports them to the unloading receiving mechanism corresponding to the qualified battery cells and the unqualified battery cells, respectively.

8. The laser processing apparatus according to claim 7, characterized in that, The feeding mechanism includes a first conveying component and a second conveying component. The first conveying component includes a first rotary drive and a first pickup component disposed on the drive end of the first rotary drive, wherein: The first rotary drive unit drives the first picking unit to move between the feeding position and the imaging position. When the first picking unit moves to the feeding position, it picks up multiple sets of battery cells located at the feeding position. When the first picking unit moves to the imaging position, it releases the picked-up multiple sets of battery cells onto the positioning mechanism. The second conveying component is used to pick up the multiple sets of battery cells that have been positioned and adjusted from the positioning mechanism and convey them to the carrier at the loading position. The second conveying component has the same structure as the first conveying component, or the second conveying component includes a linear motor and an adsorption component. The adsorption component is disposed at the drive end of the linear motor and is driven by the linear motor to reciprocate between the positioning mechanism and the loading position.

9. The laser processing apparatus according to claim 8, characterized in that, When the second transport component has the same structure as the first transport component, the movement trajectory of the first pick-up part of the second transport component is on the same circle as the movement trajectory of the first pick-up part of the first transport component.

10. The laser processing apparatus according to claim 8, characterized in that, When the second transport component has the same structure as the first transport component, when the first pick-up part of the first transport component moves between the feeding position and the photographing position, the angle corresponding to the arc length traversed by each movement is 90°; and / or, when the first pick-up part of the second transport component moves between the photographing position and the loading position, the angle corresponding to the arc length traversed by each movement is 180°.

11. The laser processing apparatus according to claim 7, characterized in that, The feeding mechanism includes a second rotating component and a second picking component. The second rotating component drives the second picking component to move sequentially to the feeding position, the photographing position, and the feeding position, so that the second picking component transports the multiple sets of battery cells from the feeding position to the positioning mechanism. After the positioning mechanism adjusts the position of the multiple sets of battery cells, the multiple sets of battery cells are transported from the positioning mechanism to the carrier at the feeding position.

12. The laser processing apparatus according to claim 7, characterized in that, The loading position, the processing position, the unloading position, and the empty position are distributed at equal intervals on the circular moving trajectory of the carrier. The feeding mechanism includes four carriers, which are evenly distributed on the circular moving trajectory. Each time the rotary drive assembly drives all the carriers to rotate 90°, each carrier rotates from one of the loading position, the empty position, the processing position, and the unloading position to the next position.

13. The laser processing apparatus according to claim 7, characterized in that, The feeding mechanism includes a feeding rotating component and a feeding conveying component disposed on the driving end of the feeding rotating component. The feeding conveying component is equipped with a Bernoulli suction cup, which corresponds one-to-one with a battery cell in the plurality of battery cells, and each Bernoulli suction cup independently adsorbs and releases a battery cell. The feeding receiving mechanism includes a first feeding receiving mechanism and a second feeding receiving mechanism. The first feeding receiving mechanism is used to receive qualified battery cells, and the second feeding receiving mechanism is used to receive unqualified battery cells. The feeding rotating component drives the feeding conveying component to move between the feeding position, the first feeding receiving mechanism, and the second feeding receiving mechanism. When the feeding conveying component moves to the feeding position, it picks up the plurality of battery cells located at the feeding position. When the feeding conveying component moves to the first feeding receiving mechanism, it releases the qualified battery cells in the plurality of battery cells. When the feeding conveying component moves to the second feeding receiving mechanism, it releases the unqualified battery cells in the plurality of battery cells.

14. The laser processing apparatus according to any one of claims 7 to 13, characterized in that, The positioning mechanism includes multiple transparent platforms, a position recognition camera, and multiple position adjustment mechanisms. Each transparent platform is respectively mounted on the drive end of each position adjustment mechanism, and each transparent platform is used to carry one of the multiple sets of battery cells. The position recognition camera is positioned below the transparent platform and shoots upward to obtain the position information of each battery cell in the multiple sets of battery cells. Each position adjustment mechanism adjusts the position of the battery cell carried on the transparent platform according to the corresponding position information.

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