Laser-induced firing-based processing device

Abstract

A laser-induced firing-based processing device. The processing device comprises at least two processing stations, and a bearing apparatus (100). The at least two processing stations are each provided with a laser module (210, 310) and an electrical input module (220, 320); the bearing apparatus (100) comprises at least one bearing unit (110) and a first driving mechanism (120) for driving the bearing unit to sequentially move to a first processing station and a second processing station; the two electrical input modules (220, 320) each comprise a conductive module and a second driving mechanism (40) connected to the conductive module; the conductive module comprises a first electrode (10) and a second electrode; the first electrode (10) and the second electrode are respectively used for electrically contacting the upper surface and the lower surface of a cell; and the first electrode (10) is located above the bearing unit (110). The processing device can solve the technical problem of poor contact resistivity uniformity caused by the conductive modules shielding laser, thereby improving the photoelectric conversion efficiency and realizing mass production.

Description

Laser induced sintering processing equipment

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on August 14, 2023, with application number 202322179648.7 and invention name “A processing equipment for laser induced sintering”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of photovoltaic cells, and specifically relates to a processing device for laser-induced sintering. Background Art

[0003] The contact resistance between the surface and back electrodes of crystalline silicon solar cells significantly impacts fill factor and conversion efficiency. Lower contact resistance leads to higher fill factor and conversion efficiency, making reducing contact resistance a pressing need for major cell manufacturers. On the other hand, in pursuit of higher conversion efficiency, the sheet resistance of the emitter in the surface electrode of crystalline silicon solar cells has been increasing, making it difficult to achieve even lower contact resistance. Conventional airflow thermal cycle sintering furnaces struggle to achieve a good ohmic contact when sintering the slurry on the cell.

[0004] To reduce contact resistance, the applicant utilizes laser-induced sintering technology. This technology excites battery carriers with lasers and directs them under the influence of an external electric field with reverse voltage, forming a loop. When the loop current flows through the metal-semiconductor interface, the high contact resistance between the metal and semiconductor creates a significant thermal effect. This heat further promotes the mutual diffusion of the metal and semiconductor, resulting in excellent contact properties after sintering. However, the applicant has found that the battery's photoelectric conversion efficiency and economic benefits need to be further improved during the application of this technology.

[0005] Summary of the Invention

[0006] In view of this, the present application provides a laser induced sintering processing device, which has at least a first processing station and a second processing station. The processing device includes a carrying device, a first laser module and a first electrical input module arranged at the first processing station, and a second laser module and a second electrical input module arranged at the second processing station; the carrying device includes at least one carrying unit for carrying a battery cell and a first driving mechanism for driving the carrying unit to move to the first processing station and the second processing station in sequence;

[0007] The first electrical input module and the second electrical input module each include a power supply, a conductive module, and a second driving mechanism connected to the conductive module. The conductive modules each include a first electrode and a second electrode connected to the power supply. The first electrode and the second electrode are respectively used to electrically contact the upper and lower surfaces of the battery cell. The first electrode in the first electrical input module is arranged below the first laser module, and the first electrode in the second electrical input module is arranged below the second laser module. The first electrode is located above the carrying unit. The first laser module and the second laser module are respectively used to emit laser beams to scan the battery cell when the conductive modules of the first electrical input module and the second electrical input module are electrically connected to the upper and lower surfaces of the battery cell.

[0008] The position where the first electrode in the second electrical input module contacts the battery cell at the second processing station is offset from the position where the first electrode in the first electrical input module contacts the battery cell at the first processing station.

[0009] In one example, the first electrode in the first electrical input module includes at least one strip-shaped electrode, referred to as a first front conductive unit, and the first electrode in the second electrical input module includes at least one strip-shaped electrode, referred to as a second front conductive unit.

[0010] In one example, the first electrode includes any one of an elastic probe array, an elastic conductive wire, or an elastic electrode sheet.

[0011] In one example, the first processing station and the second processing station are sequentially arranged along a first direction, and the first front conductive unit and the second front conductive unit are both extended in a direction perpendicular to the first direction;

[0012] Alternatively, the first processing station is perpendicular to the second processing station, the first front conductive unit is extended along a first direction, and the second front conductive unit is extended along a direction perpendicular to the first direction.

[0013] In one example, the first electrode in the first electrical input module includes a plurality of first front conductive units arranged side by side, and the first electrode in the second electrical input module includes a plurality of second front conductive units arranged side by side;

[0014] When the first processing station and the second processing station are arranged in sequence along the first direction, the plurality of first front conductive units and the plurality of second front conductive units are arranged in sequence along the first direction;

[0015] Alternatively, when the first processing station is arranged perpendicular to the second processing station, the plurality of first front conductive units are arranged in sequence along a direction perpendicular to the first direction, and the plurality of second front conductive units are arranged in sequence along the first direction.

[0016] In one example, the second electrode is a conductive part arranged on the carrying unit, and the conductive part contacts the lower surface of the battery cell. The conductive module also includes a conductive connector, which is arranged above the carrying unit and connected to the power supply. The first electrical input module and the second electrical input module also respectively include a second driving mechanism connected to the first electrode and the conductive connector. The first electrode contacts the upper surface of the battery cell under the drive of the second driving mechanism, and the conductive connector contacts the conductive part under the drive of the second driving mechanism to connect the second electrode to the power supply.

[0017] In one example, the conductive connection includes at least one conductive post.

[0018] In one example, the conductive portion is a conductive plate.

[0019] In one example, the size of the conductive plate is larger than the size of the battery cell. When the supporting unit is located at the first processing station and / or the second processing station, the projection of the first electrode on the horizontal plane faces part of the main grid line of the battery cell, and the projection of the conductive connecting member on the horizontal plane faces the area outside the battery cell on the conductive plate.

[0020] In one example, the second driving mechanism is a Z-axis driving module, the first electrode and the conductive connecting member are both connected to the Z-axis driving module, and the Z-axis driving module carries the first electrode and the conductive connecting member down simultaneously to the upper surface of the battery cell where the first electrode contacts, and the conductive connecting member contacts the conductive plate.

[0021] In one example, the carrying unit is a carrying platform, the conductive plate is arranged on an upper surface of the carrying platform, and the battery cell is placed on the conductive plate.

[0022] In one example, the support platform is a negative pressure adsorption support platform, that is, an adsorption cavity is provided inside the support platform, and a plurality of first adsorption channels are provided on the surface of the support platform. The first adsorption channels are connected to the adsorption cavity, and the adsorption cavity is connected to the vacuum generating device.

[0023] In one example, the conductive plate is provided with a plurality of second adsorption channels, the second adsorption channels are communicated with the first adsorption channels, and the second adsorption channels are used to adsorb and fix the battery cell on the conductive plate.

[0024] In one example, the conductive plate does not cover the first adsorption channel.

[0025] In one example, the laser induced sintering processing equipment further includes a positioning station, which is arranged before the first processing station and the second processing station according to the transmission direction of the battery cell in the processing equipment;

[0026] The positioning station is provided with a position adjustment mechanism for adjusting the position of the battery cell. When the carrying unit transfers the position-adjusted battery cell to the first processing station and / or the second processing station, the first electrode faces part of the main grid line of the battery cell.

[0027] In one example, the carrying device includes at least two carrying units for carrying battery cells, and the first driving mechanism is used to drive one of the at least two carrying units to move from the first processing station to the second processing station, and is also used to drive another of the at least two carrying units to move to the first processing station.

[0028] In one example, the carrying unit includes a hollow portion, the second electrode is arranged below the hollow portion, the first electrical input module and the second electrical input module further include second driving mechanisms connected to the first electrode and the second electrode, respectively, the first electrode contacts the upper surface of the battery cell under the drive of the second driving mechanism, and the electrode of the second electrode passes through the hollow portion and directly contacts the lower surface of the battery cell under the drive of the second driving mechanism.

[0029] In one example, the second electrode includes at least one strip-shaped electrode, at least one conductive column, or any one of a conductive plate.

[0030] In one example, the carrying device is a turntable module, the carrying unit is a carrying platform, the first driving mechanism is a rotation driving mechanism, and the turntable module further includes a horizontally arranged and centrally symmetrical support frame;

[0031] The driving shaft of the rotary drive mechanism is vertically arranged and connected to the center of the support frame; the bearing device includes at least two bearing units, which are installed on the support frame, and the distances between the bearing units and the center of the support frame are equal.

[0032] In one example, the turntable module includes four bearing units, which are equidistantly distributed along the circumference of the support frame, and the first processing station is adjacent to the second processing station;

[0033] The first electrode in the first electrical input module includes at least one strip-shaped electrode, called a first front conductive unit, and the first electrode in the second electrical input module includes at least one strip-shaped electrode, called a second front conductive unit; the first front conductive unit is extended along a first direction, and the second front conductive unit is arranged along a direction perpendicular to the first direction.

[0034] In one example, the processing equipment further has a third workstation and a fourth workstation, and the first driving mechanism drives the carrying unit to sequentially pass through the third workstation, the first processing workstation, the second processing workstation and the fourth workstation.

[0035] In one example, the support frame is a cross-arm support frame, a loading and conveying device is provided corresponding to the third workstation, and a unloading and conveying device is provided corresponding to the fourth workstation; the third workstation is a loading station, and the fourth workstation is a unloading station, wherein the line connecting the loading station and the unloading station is parallel to the line connecting the loading and conveying device and the unloading conveying device.

[0036] In one example, the third workstation is a loading workstation, and the fourth workstation is a unloading workstation;

[0037] A loading transmission device and a loading handling device are provided corresponding to the loading station, and a unloading transmission device and a unloading handling device are provided corresponding to the unloading station;

[0038] A positioning station is provided between the feeding and conveying device and the turntable module, and a position adjustment mechanism is provided at the positioning station.

[0039] In one example, the loading and transporting device is a conveyor belt, and the loading and handling device is an L-shaped rotary robotic arm, including a first rotary drive actuator and two mutually perpendicular robotic arms connected to the first rotary drive actuator, and the ends of the two robotic arms are respectively connected to suction cups for downwardly adsorbing battery cells, and the rotary robotic arm can rotate 90° at a time;

[0040] The loading and conveying device, the loading station, the unloading station, and the unloading and conveying device are collinearly arranged in sequence; the position adjustment mechanism is arranged on the perpendicular midline between the output end of the loading and conveying device and the loading station, that is, the position adjustment mechanism is arranged directly below the suction cup when the L-shaped rotating robotic arm rotates 90° and stops;

[0041] The first rotary drive actuator with the suction cups on the two robotic arms is respectively and simultaneously located above the loading and conveying device and the position adjustment mechanism, or respectively and simultaneously located above the position adjustment mechanism and the carrying unit corresponding to the loading station.

[0042] In one example, the position adjustment mechanism is a mechanical center alignment device, which includes a supporting mechanism for supporting the battery cell, four push plates arranged in a square shape around the supporting mechanism, and a driving member connected to the push plates, and the driving member moves the four push plates toward the center of the battery cell to achieve battery cell positioning.

[0043] In one example, the unloading transmission device is a conveyor belt, and the unloading handling device is a straight-line rotary robot arm, including a second rotary drive actuator and a straight-line robot arm connected to the second rotary drive actuator, and the end of the robot arm is connected to a suction cup for downwardly adsorbing the battery cell, and the robot arm can rotate 90° at a time;

[0044] The second rotary drive actuator carries the suction cup on the I-shaped robotic arm to move back and forth above the unloading transmission device and the carrying unit corresponding to the unloading station.

[0045] In one example, the loading and unloading transmission device and the unloading transmission device are both conveyor belts, the loading and unloading handling device and the unloading handling device are linear robotic arms, the loading and unloading handling device includes a loading drive actuator and two suction cups connected to the loading drive actuator, and the unloading handling device includes a unloading drive actuator and a suction cup connected to the unloading drive actuator;

[0046] Among them, the loading and conveying device, positioning station, loading station, unloading station, and unloading transmission device are arranged in the same line, and the loading drive actuator with two suction cups is located above the loading and conveying device and the position adjustment mechanism at the same time, or is located above the position adjustment mechanism and the carrying unit corresponding to the loading station at the same time; the unloading drive actuator with the suction cup moves back above the unloading transmission device and the carrying unit corresponding to the unloading station.

[0047] In one example, a loading buffer module is provided on the transmission path of the loading transmission device, and / or a unloading buffer module is provided on the transmission path of the unloading transmission device.

[0048] In one example, the carrying device is an interactive module, which also has a loading station and an unloading station, and the first processing station and the second processing station are arranged between the loading station and the unloading station; the carrying device also includes a base, and four stations are arranged on the base; the first driving mechanism includes two transverse modules arranged on both sides of the base, and the first driving mechanism also includes at least two Z-axis modules connected to the transverse modules, and the interactive module includes at least two carrying units, and at least two of the carrying units are respectively connected to at least two Z-axis modules, and the number of the Z-axis modules corresponds one to one to the number of the carrying units.

[0049] In one example, the carrying device is a conveyor belt module, the conveyor belt module includes a belt, the belt is a carrying unit, and the first driving mechanism rotates the belt.

[0050] In one example, the carrying device is any one of a turntable module, an interactive module or a conveyor belt module.

[0051] The beneficial effects of the present application are as follows: the laser-induced sintering processing equipment proposed in the present application, having two processing stations and two laser modules and electrical input modules correspondingly arranged at the two processing stations, can process the same battery cell in sequence using the first laser module and the first electrical input module and the second laser module and the second electrical input module by changing the relative position of the first electrode and the battery cell, wherein the first electrical input module and the second electrical input module contact the battery cell at different positions, the two laser modules irradiate different areas, and the area irradiated by the second laser includes the portion blocked by the conductive module during the first laser irradiation, thereby resolving the problem of the conductive module blocking the laser irradiation of the battery cell. In addition, the processing equipment can be used to achieve mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] FIG1 is a schematic structural diagram of a laser induced sintering processing device according to an embodiment of the present application;

[0053] FIG2 is a schematic structural diagram of the first electrode offset at two processing stations provided by the present application;

[0054] FIG3 is a schematic structural diagram of the connection between the first electrode, the conductive connector, and the second driving mechanism provided by the present application;

[0055] FIG4 is a schematic structural diagram of a laser induced sintering processing device in which the second electrode is in direct contact with the back surface of the cell, provided in an embodiment of the present application;

[0056] FIG5 is a schematic structural diagram of a laser induced sintering processing device using a turntable module as a carrying device according to another embodiment provided by the present application;

[0057] FIG6 is a schematic structural diagram of a laser induced sintering processing device using a turntable module as a carrying device according to another embodiment provided by the present application;

[0058] FIG7 is a schematic structural diagram of a laser induced sintering processing device using a turntable module as a supporting device according to another embodiment provided by the present application.

[0059] FIG8 is a schematic structural diagram of a laser induced sintering processing device using an interactive module as a supporting device according to another embodiment provided by the present application;

[0060] FIG9 is a schematic structural diagram of a laser induced sintering processing device using an interactive module as a supporting device according to another embodiment provided by the present application;

[0061] FIG10 is a schematic structural diagram of a laser induced sintering processing device using a conveyor belt module as a carrying device according to another embodiment provided by the present application;

[0062] FIG11 is a schematic structural diagram of a position adjustment mechanism according to an embodiment of the present application. DETAILED DESCRIPTION

[0063] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0064] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0065] The applicant's research found that when using laser induced sintering technology to reduce contact resistance, a conductive module is required to contact the battery cell to load a reverse voltage. Usually, the laser module is set above the conductive module. When the laser irradiates the battery cell, the conductive module will partially block the laser, making some battery cells unable to be irradiated by the laser. Therefore, the contact of the blocked part is not improved, resulting in low photoelectric conversion efficiency.

[0066] Based on the problem that the conductive module blocks the laser, resulting in poor contact resistivity uniformity and no obvious improvement in the photoelectric conversion efficiency of the battery, as shown in Figure 1, the present application provides a laser induced sintering processing equipment, the processing equipment having at least a first processing station and a second processing station, the processing equipment including a carrying device 100, a first laser module 210 and a first electric input module 220 arranged at the first processing station, and a second laser module 310 and a second electric input module 320 arranged at the second processing station; the carrying device 100 includes at least one carrying unit 110 for carrying a battery cell and a first driving mechanism 120 for driving the carrying unit 110 to move to the first processing station and the second processing station in sequence;

[0067] Among them, the first electric input module 220 and the second electric input module 320 respectively include a power supply 30 and a conductive module. The conductive modules of each of the two electric input modules include a first electrode 10 and a second electrode connected to the power supply 30. The first electrode 10 and the second electrode are respectively used to electrically contact the upper surface and the lower surface of the battery cell. The first electrode 10 in the first electric input module 220 is arranged below the first laser module 210, and the first electrode 10 in the second electric input module 320 is arranged below the second laser module 310; the first electrode 10 is located above the carrier unit 110, and the first laser module 210 and the second laser module 310 are respectively used to emit laser beams to scan the battery cell when the conductive modules of the first electric input module 220 and the second electric input module 320 are electrically connected to the upper and lower surfaces of the battery cell.

[0068] Specifically, there are many ways to achieve electrical connection between the second electrode and the lower surface of the battery cell, such as directly allowing the second electrode to contact the lower surface of the battery cell, or providing a conductive portion 130 (such as a conductive plate) on the carrier unit 110 as the second electrode, the conductive portion 130 contacts the lower surface of the carried battery cell, and a conductive connector 20 is provided to contact the conductive portion 130 so that the second electrode is electrically connected to the lower surface of the battery cell. Any implementation method that can achieve electrical connection between the second electrode and the lower surface of the battery cell is within the protection scope of this application. Among them, the first drive mechanism 120 can be a linear drive mechanism such as a linear motor. In this case, the carrier device 100 can be the interactive module described below, or it can be a rotary drive mechanism such as a rotary motor. In this case, the carrier device 100 can be the turntable module described below. Both laser modules include a laser and a laser scanning component. The laser is used to emit a laser beam, and the laser scanning component is used to control the scanning direction of the laser beam. The laser scanning component includes, for example, a galvanometer and a field mirror, etc., and of course, other scanning methods can also be used.

[0069] The position where the first electrode 10 in the second electrical input module 320 contacts the cell at the second processing station is offset from the position where the first electrode 10 in the first electrical input module 310 contacts the cell at the first processing station. This solves the problem of the conductive module blocking the laser from irradiating the cell. It should be noted that since the carrier unit can move with the cell to the first and second processing stations in sequence, the cell can remain stationary after arriving at the first and second processing stations. Simply by pre-setting the position and orientation of the first electrodes 10 at the two processing stations to avoid any undesirable locations.

[0070] In addition, since the first electrode 10 contacts the cell at the busbar on the upper surface of the cell, and the busbar is in the shape of a long and thin strip, in order to better contact the first electrode 10 with the busbar, the first electrode 10 includes at least one strip electrode.

[0071] The following further explains the offset. Specifically, as shown in Figure 2, the figure only schematically depicts the battery cells and the main grid lines of the battery cells, and uses dotted lines to indicate the position where the first electrode 10 contacts the main grid lines at the two processing stations. In Figure 2 (a), the first processing station and the second processing station are arranged in sequence along the first direction (for example, the X-axis direction in the figure) as an example. In this case, it can correspond to the supporting device in the form of an interactive module below. The positions of the battery cells on the left and right in the figure represent the first processing station and the second processing station. In Figure 2 (b), the first processing station and the second processing station are arranged vertically as an example. In this case, it can correspond to the supporting device in the form of a turntable module below. The positions of the battery cells on the left and right in the figure represent the first processing station and the second processing station. The offset means that, for example, in Figure 2 (a) and Figure 2 (b), at the first processing station, the first electrode 10 contacts the main grid lines of the battery cells indicated by the dotted line on the left side of each figure; and at the second processing station, the first electrode 10 contacts the main grid lines of the battery cells indicated by the dotted line on the right side of the figure. (a) in FIG2 and (b) in FIG2 are only two schematic diagrams, and the number and position of the electrodes of the first electrode 10 at the two processing stations are not limited thereto. Since the first electrode 10 only needs to include at least one strip electrode, that is to say, the number of electrodes is not limited, there can be only one electrode contacting a main grid line on the cell or multiple electrodes arranged side by side contacting multiple main grid lines on the cell at the same time. Furthermore, when there are multiple electrodes, the distance between adjacent electrodes can be N times the distance between adjacent main grid lines, where N is a natural number ≥ 1. In addition, the position of the main grid line of the cell contacted by the electrode in the first electrode 10 is also not limited, and can be the main grid line near the outside of the cell or the main grid line near the center of the cell. As long as the position of the first electrode 10 of the second processing station contacting the main grid line of the cell as described above is offset, the area irradiated by the second laser can include the portion blocked by the conductive module during the first laser irradiation.

[0072] In addition, the area irradiated by the laser at the first processing station also includes the laser irradiation area blocked by the first electrode 10 of the second power input module 320 at the second processing station.

[0073] During operation, after the carrier unit 110 receives the battery cell, it first processes a portion of the battery cell's area requiring laser irradiation at the first processing station via the first laser module 210 and the first electrical input module 220. The first drive mechanism 120 then operates, driving the carrier unit 110 to transfer the battery cell from the first processing station to the second processing station, where the second laser module 310 and the second electrical input module 320 process the remaining portion of the battery cell's area requiring laser irradiation. The two processing stations process the battery cells in a similar manner. Specifically, the conductive module, driven by the second drive mechanism 40, completes the electrical connection of the battery cell and applies voltage, while the laser module simultaneously performs a laser scan on a portion of the battery cell. After processing at this station is completed, the laser is turned off, and the conductive module, driven by the second drive mechanism 40, no longer contacts the battery cell.

[0074] The laser-induced sintering processing equipment proposed in this application has two processing stations and two laser modules and electrical input modules correspondingly arranged at the two processing stations. By changing the relative position of the conductive module, especially the first electrode 10, and the battery cell, the first laser module and the first electrical input module, and the second laser module and the second electrical input module are used to sequentially process the same battery cell. The first electrical input module 220 and the second electrical input module 320 contact the battery cell at different positions, and the two laser modules irradiate different areas. The area of ​​the second laser irradiation includes the portion blocked by the conductive module during the first laser irradiation. This solves the problem of the conductive module blocking the laser irradiation of the battery cell. In addition, the processing equipment can be used for mass production.

[0075] As another embodiment, the first electrode 10 in the first electrical input module 220 includes at least one strip-shaped electrode, referred to as a first front conductive unit, and the first electrode 10 in the second electrical input module 320 includes at least one strip-shaped electrode, referred to as a second front conductive unit; it should be noted that the strip-shaped electrode here refers to: because the main grid line of the battery cell contacted by the first electrode 10 is in the shape of a slender strip, in order to make the first electrode 10 better contact the main grid line, the outer contour of the electrode projected on the horizontal plane is a strip as a whole (on a straight line). Among them, the structure of the electrode of the first electrode 10 includes: an elastic probe row structure (that is, a plurality of elastic probes arranged in a collinear manner connected under a probe bracket, and contacting the battery cell through a plurality of probes), or an elastic conductive wire, or a long strip of elastic electrode sheet (the electrode sheet can be in surface contact with the battery cell). The electrode structure in the first electrode 10 is not limited to this.

[0076] Furthermore, the first processing station and the second processing station are arranged in sequence along the first direction, that is, the carrying unit 110 performs a linear motion when carrying the battery cell through the first processing station and the second processing station in sequence. The first direction is, for example, the X-axis direction in (a) of Figure 2, which may correspond to the carrying device in the form of an interactive module below. At this time, the first positive conductive unit and the second positive conductive unit are both extended in a direction perpendicular to the first direction, for example, the Y-axis direction shown in (a) of Figure 2. When the first driving mechanism 120 carries the battery cell on the carrying unit 110 to the bottom of the second electric input module, the position where the second electric input module contacts the battery cell at the second processing station is offset in the first direction (that is, in the X-axis direction) relative to the position where the first electric input module contacts the battery cell at the first processing station; at this time, the offset distance can be N times the distance between adjacent main grid lines, and N is a natural number ≥1, so that the first electrode 10 can also contact the main grid line of the battery cell at the second processing station.

[0077] Alternatively, the first processing station and the second processing station are arranged perpendicularly, specifically, the first driving mechanism 120 rotates the carrying unit 110 90 degrees so that the carrying unit 110 is transferred from the first processing station to the second processing station. That is to say, after the same battery cell carried by the carrying unit 110 is transferred from the first processing station to the second processing station, the carrying unit 110 rotates 90 degrees on the horizontal plane with the battery cell, as shown in (b) of Figure 2. At this time, it can correspond to the carrying device 100 in the form of a turntable module below, the first front conductive unit extends along a first direction, such as the Y-axis direction in the figure, and the second front conductive unit extends along a direction perpendicular to the first direction, that is, the X-axis direction. As a result, when the carrying unit 110 rotates 90 degrees with the battery cell, the first electrode 10 can also contact the main grid line of the battery cell at the second processing station.

[0078] As a further solution of the above embodiment, the first electrode 10 in the first electric input module 220 includes a plurality of first positive conductive units arranged side by side, and the first electrode 10 in the second electric input module 320 includes a plurality of second positive conductive units arranged side by side; that is, the first electric input module 220 and the second electric input module 320 may include more than one row of positive conductive units, for example, two rows, or even more; when two rows are included, they can respectively contact the main grid lines on both sides of the upper surface of the battery cell, and of course they can also contact the main grid lines near the middle position of the upper surface of the battery cell. The contact position is not restricted, as long as it is satisfied that when the carrying unit 110 moves the battery cell to the second processing station for laser irradiation, the first electrode 10 of the second electric input module 320 no longer blocks the position where the first electrode 10 in the first electric input module 220 blocks the laser, that is, the area of ​​the second laser irradiation can include the part blocked by the conductive module during the first laser irradiation.

[0079] When the first processing station and the second processing station are arranged sequentially along the first direction, as shown in FIG2(a), the plurality of first front conductive units and the plurality of second front conductive units are arranged sequentially along the first direction (X-axis direction);

[0080] Alternatively, when the first processing station is arranged perpendicular to the second processing station, as shown in (b) in Figure 2, multiple first front conductive units are arranged in sequence along a direction perpendicular to the first direction (X direction), and multiple second front conductive units are arranged in sequence along the first direction (Y direction).

[0081] As another embodiment, the second electrode is a conductive part 130 arranged on the carrier unit 110, and the conductive part 130 contacts the lower surface of the battery cell. The conductive module also includes a conductive connector 20, which is arranged above the carrier unit 110 and the conductive connector 20 is connected to the power supply 30. The first electrical input module 220 and the second electrical input module 320 also include a second driving mechanism 40 connected to the first electrode 10 and the conductive connector 20 respectively (that is, the first electrical input module 220 includes the second driving mechanism 40, and the second electrical input module 320 also includes the second driving mechanism 40). The first electrode 10 contacts the upper surface of the battery cell under the drive of the second driving mechanism 40, and the conductive connector 20 contacts the conductive part 130 under the drive of the second driving mechanism 40, thereby connecting the second electrode (that is, the conductive part 130) to the power supply 30. The conductive portion 130 can be provided on the carrier unit 110 in various forms. For example, at least a portion of the surface of the carrier unit 110 can serve as the conductive portion 130. Specifically, the entire carrier unit 110 can be made of a conductive material, and the battery cell can be placed directly on the conductive carrier unit 110. Alternatively, only a portion of the surface of the carrier unit 110 can be made of a conductive material, preferably the outer surface of the carrier unit 110 is conductive, and the lower surface of the battery cell can contact this portion of the surface of the carrier unit 110. Alternatively, for example, the carrier unit 110 described below can be a carrier platform, with a conductive plate 130 provided on the carrier platform surface, serving as the conductive portion 130, and the battery cell can be placed on the conductive plate. Regardless of the form, the battery cell contacts the conductive portion 130, and the conductive connector 20 contacts the conductive portion 130 under the drive of the second drive mechanism 40. The second drive mechanism 40 can be a single drive actuator, i.e., the first electrode 10 and the conductive connector 20 share a single drive actuator, or the first drive mechanism 120 can be two drive actuators, i.e., the first electrode 10 and the conductive connector 20 are driven by different drive actuators.

[0082] As another embodiment, the conductive connector 20 includes at least one conductive post, that is, to achieve electrical connectivity, the conductive connector 20 only needs to have at least one contact point connected to the conductive portion. Preferably, there are four conductive posts, which are separately arranged on both sides of the battery cell.

[0083] In another embodiment, the conductive portion 130 is a conductive plate disposed on the upper surface of the carrier unit 110. The conductive plate supports the battery cell so that the conductive portion 130 contacts the lower surface of the supported battery cell. The carrier unit 110 is connected to the first drive mechanism 120, and the conductive connector 20 is driven by the second drive mechanism 40 to contact the conductive plate, thereby achieving electrical connection. The conductive portion 130 is configured in a plate shape to facilitate contact with the sheet-shaped battery cell.

[0084] As another embodiment, the size of the conductive plate is larger than the size of the battery cell, and when the carrier unit 110 is located at the first processing station and / or the second processing station, the projection of the first electrode 10 in the horizontal plane is opposite to part of the main grid line of the battery cell, and the projection of the conductive connector 20 in the horizontal plane is opposite to the area outside the battery cell on the conductive plate. Of course, the size of the conductive plate can also be smaller than the size of the battery cell, but in comparison, when the size of the conductive plate is larger than the battery cell, it is more convenient for the conductive connector 20 to directly contact the conductive plate, and this implementation method is simpler. More specifically, in this embodiment, preferably, the conductive connector 20 contacts the conductive portion 130, that is, the upper surface or side of the conductive plate, under the drive of the second driving mechanism 40.

[0085] As another embodiment, as shown in FIG3 , the second drive mechanism 40 can be a plurality of drive actuators, i.e., the first electrode 10 and the conductive connector 20 share a single drive actuator. Specifically, the second drive mechanism is a Z-axis drive module, to which both the first electrode 10 and the conductive connector 20 are connected. The Z-axis drive module simultaneously lowers the first electrode 10 and the conductive connector 20 until the first electrode 10 contacts the upper surface of the cell and the conductive connector 20 contacts the conductive plate. The Z-axis drive module can be a linear motor or a pneumatic cylinder.

[0086] At this time, since the battery cell is placed on the surface of the conductive plate, that is, the height of the battery cell relative to the carrier unit 110 is greater than the height of the conductive plate relative to the carrier unit 110, and the first electrode 10 and the conductive connector 20 respectively contact the battery cell and the conductive plate, it is preferred that the distance between the bottom of the first electrode 10 and the upper surface of the carrier unit 110 is greater than the distance between the bottom of the conductive connector 20 and the upper surface of the carrier unit 110. In this way, when the first electrode 10 and the conductive connector 20 move downward simultaneously, the first electrode 10 will not crush the battery cell. Of course, two driving actuators can also be used to carry the first electrode 10 and the conductive connector 20 downward respectively; or, the conductive connector 20 can be designed to be movable to avoid crushing the battery cell.

[0087] More specifically, as shown in FIG3 , the Z-axis drive module is connected to a support frame, and the first electrode 10 and the conductive connector 20 are both connected to the support frame, so that the first electrode 10 and the conductive connector 20 are supported and located above the carrier unit 110. It can also be seen from the figure that the conductive connector 20 is closer to the outside of the first electrode 10, so that the horizontal projection of the first electrode 10 faces part of the busbar of the cell, and the horizontal projection of the conductive connector 20 faces the area on the conductive plate outside the cell.

[0088] Furthermore, the material of the conductive plate 130 is preferably copper, because of its good conductivity and relatively low price.

[0089] Furthermore, both the carrying unit 110 and the conductive plate 130 are hollow structures, and the positions of the hollow structures of the two correspond in height. The hollow structures can prevent debris from causing battery cell fragments.

[0090] As another embodiment, the carrying unit 110 is a carrying platform, a conductive plate is provided on the upper surface of the carrying platform, and the battery cells are placed on the conductive plate. Of course, the carrying unit 110 can also be in other forms, such as a belt.

[0091] As another embodiment, the supporting platform is a negative pressure adsorption supporting platform, that is, an adsorption chamber is provided inside the supporting platform, and a plurality of first adsorption channels are provided on the surface of the supporting platform. The first adsorption channels are connected to the adsorption chamber, and the adsorption chamber is connected to the vacuum generating device.

[0092] Furthermore, the conductive plate is provided with a plurality of second adsorption channels, which are connected to the first adsorption channels and are used to adsorb and fix the battery cells on the conductive plate 130 to prevent the position of the battery cells from shifting during the movement of the carrier unit 110.

[0093] Alternatively, the conductive plate does not cover the first adsorption channel. More specifically, the conductive plate has a hollow portion, and at least part of the first adsorption channel faces the hollow portion. More preferably, the first adsorption channel passes through the hollow portion and is located at the same height as the surface of the conductive plate. The first adsorption channel is used to adsorb and fix the battery cell to the conductive plate 130 to prevent the position of the battery cell from shifting during the movement of the carrier unit 110.

[0094] As another embodiment, the laser induced sintering processing equipment further includes a positioning station. According to the transmission direction of the battery cell in the processing equipment, the positioning station is arranged before the first processing station and the second processing station; for example, the station indicated by the label E in Figures 6 and 7. The transmission direction of the battery cell in the processing equipment refers to the direction in which the battery cell moves from the loading station to the first processing station, the second processing station, and the unloading station. The positioning station is arranged before the first processing station and the second processing station, which means that the positioning station can be set at a position before the battery cell is transferred to the carrier device 100, such as the examples in Figures 6 and 7; as another case, it can also be set on the carrier device 100, that is, the battery cell can be photographed and positioned on the carrier device 100 after being transferred to the carrier device 100.

[0095] The positioning station is equipped with a position adjustment mechanism for adjusting the position of the cell. When the carrier unit 100 carries the adjusted cell to the first processing station and / or the second processing station, the first electrode 10 is aligned with a portion of the cell's busbars. The position adjustment mechanism prevents the first electrode 10 from properly contacting the cell's busbars at the two processing stations.

[0096] As another embodiment, the carrier device 100 includes at least two carrier units 110 for carrying battery cells, and the first driving mechanism 120 is used to drive one of the two carrier units 110 to move from the first processing station to the second processing station, and is also used to drive the other of the two carrier units 110 (for example, from the loading station) to move to the first processing station. Since the carrier device 100 has at least two carrier units 110, the two processing stations can work simultaneously, thereby improving the processing efficiency. More specifically, while the first processing station processes a portion of the current battery cell, the second processing station processes the other half of the previous battery cell (the remaining half that has not been processed at the first processing station), including the area blocked by the conductive module.

[0097] As another embodiment, as shown in FIG4 , the carrier unit 110 includes a hollow portion, and the second electrode is disposed below the hollow portion. The first electrical input module 220 and the second electrical input module 320 further include a second driving mechanism 40 connected to the first electrode 10 and the second electrode, respectively. The first electrode 10 contacts the upper surface of the battery cell under the drive of the second driving mechanism 40, and the second electrode passes through the hollow portion and directly contacts the lower surface of the battery cell under the drive of the second driving mechanism 40, thereby achieving electrical connection between the second electrode and the lower surface of the battery cell. Specifically, the second electrode can be a structure as indicated by reference numeral 20 in FIG4 , i.e., including at least one strip-shaped electrode. The second electrode can also include at least one conductive column, or the second electrode can be a conductive plate. Furthermore, the carrier unit 110 can be provided with an adsorption channel connected to a vacuum generator to adsorb and fix the battery cell. In addition, the second driving mechanism 40 can be a single driving actuator, that is, the first electrode 10 and the second electrode share a driving actuator, or the first driving mechanism 120 can be two driving actuators, which respectively drive the first electrode 10 and the second electrode to contact the upper surface and lower surface of the battery cell.

[0098] Furthermore, the carrying device 100 can be any one of a turntable module, an interactive module or a conveyor belt module.

[0099] Specifically, as shown in Figure 5, the carrying device 100 is a turntable module, the carrying unit 110 is a carrying platform, and the first drive mechanism 110 is a rotary drive mechanism. The turntable module also includes a horizontally arranged and centrally symmetrical support frame; the drive shaft of the rotary drive mechanism is vertically arranged and connected to the center of the support frame; the carrying device 100 includes at least two carrying units 110, which are mounted on the support frame and are equidistant from the center of the support frame. By configuring the carrying device 100 as a turntable module, mass production is facilitated and productivity is increased.

[0100] Furthermore, the carrying device 100 includes at least three carrying units 110. At this time, the processing equipment also has at least a third workstation, which can be used for loading, or for loading and unloading. The rotary drive mechanism is used to drive at least three carrying units 110 to pass through the third workstation, the first processing station, and the second processing station in a closed loop in turn.

[0101] As another embodiment, as shown in Figures 6 and 7, there are four carrier units 110, and the four carrier units 110 are equidistantly distributed along the circumference of the support frame. In this case, the support frame can be a cross-shaped support frame. The first processing station is adjacent to the second processing station. The first electrode 10 in the first electrical input module 220 includes at least one strip-shaped electrode, referred to as a first front conductive unit, and the first electrode 10 in the second electrical input module 320 includes at least one strip-shaped electrode, referred to as a second front conductive unit. The first front conductive unit extends along a first direction (e.g., the X-axis direction in Figure 6), and the second front conductive unit extends along a direction perpendicular to the first direction (e.g., the Y-axis direction in Figure 6). By arranging the two processing stations adjacent to each other, after irradiating a portion of the cell, the remaining area can be irradiated at the next station. Since the carrier unit 110 rotates 90° before moving from the first processing station to the second processing station, the cell also rotates 90° at this time. Therefore, the second front conductive unit is arranged in a direction perpendicular to the first direction. In addition, the first electrode 10 at the first processing station and the first electrode 10 at the second processing station are set in advance to have a relative offset position to solve the shielding problem, referring to the example of (b) in Figure 2.

[0102] As another embodiment, the processing equipment further includes a third and fourth workstations. The first drive mechanism 120 drives the carrier unit 110 through the third workstation, the first processing station, the second processing station, and the fourth workstation in sequence. When the rotary drive mechanism rotates 90°, the carrier unit 110 rotates to the next workstation. Since the rotary drive mechanism rotates 90° at a time, the orientations of two adjacent carriers on the horizontal plane are perpendicular to each other.

[0103] As another embodiment, as shown in Figures 6 and 7, the support frame is a cross-arm support frame, a loading and conveying device is provided corresponding to the third station, and a unloading and conveying device is provided corresponding to the fourth station; wherein, the line connecting the loading station and the unloading station is parallel to the line connecting the loading and conveying device and the unloading and conveying device. At this time, the projection of the support frame on the horizontal plane is "X"-shaped, so when the laser modules are arranged in two laser processing stations, the two laser modules can also be arranged in a colinear manner, thereby saving space in a direction perpendicular to the direction of the connection between the loading and conveying device and the unloading and conveying device (in Figure 6, the space along the Y direction). Furthermore, when the number of processing equipment is two and they are arranged in a direction perpendicular to the direction of the connection between the loading and conveying device and the unloading and conveying device (in Figure 6, the space along the Y direction), more space is saved.

[0104] Furthermore, as shown in Figures 6 and 7, the third station is the loading station A, and the fourth station is the unloading station D. That is, the four stations are, in order, the loading station A, the first processing station B, the first processing station C, and the unloading station D. The rotary drive mechanism is used to drive the carrier unit 110 to pass through the loading station A, the first processing station B, the first processing station C, and the unloading station D. A loading transmission device 510 and a loading handling device 520 are provided corresponding to the loading station A, and a unloading transmission device 610 and a unloading handling device 620 are provided corresponding to the unloading station D. A positioning station E is provided between the loading transmission device 510 and the carrier unit 100, and the positioning station E is provided with a position adjustment mechanism.

[0105] More specifically, as one of the solutions, as shown in FIG6 , the loading and conveying device 510 is a conveyor belt, and the loading and handling device 520 is an L-shaped rotary robot arm, including a first rotary drive actuator and two mutually perpendicular robot arms connected to the first rotary drive actuator, and the ends of the two robot arms are respectively connected with suction cups for adsorbing the battery cells downward, and the first rotary drive actuator is used to rotate the two robot arms synchronously, and the rotary robot arms can rotate 90° at a time, wherein the loading and conveying device 510, the loading station A, the unloading station D, and the unloading conveyor are connected to the L-shaped rotary robot arm. The transport devices 610 are arranged in series and collinearly, specifically, along the X-direction as shown in FIG6 . The position adjustment mechanism is arranged on the perpendicular midline between the output end of the loading and conveying device 510 and the loading station A. That is, the position adjustment mechanism is located directly below the suction cup when the L-shaped rotary robot arm stops after rotating 90°. In other words, the first rotary drive actuator is used to simultaneously position the suction cups on the two robot arms above the loading and conveying device 510 and the position adjustment mechanism, or simultaneously above the position adjustment mechanism and the carrier unit 110 corresponding to the loading station A. Configuring the loading and conveying device 520 in the form of an L-shaped rotary robot arm and locating the position adjustment mechanism along the rotation path of the rotary robot arm can significantly increase production capacity.

[0106] Furthermore, the position adjustment mechanism is a mechanical center alignment device, such as shown in Figure 11. The mechanical center alignment device includes a carrier 810 for supporting the cell, four push plates 820 arranged in a square shape around the carrier 810, and a drive member 830 connected to the push plates 820. The drive member 830 moves the four push plates 820 toward the center of the cell, clamping the cell between the four push plates 820 to achieve cell positioning. Furthermore, configuring the position adjustment mechanism as a mechanical center alignment device can further improve production capacity because the alignment time required is relatively shortened.

[0107] During operation, the loading and conveying device 510 transfers the battery cell to the bottom of the suction cup of the L-shaped rotating robotic arm. The suction cup of the L-shaped rotating robotic arm absorbs the battery cell and then rotates 90° to move the battery cell to the positioning station E. After the positioning is completed by the position adjustment mechanism, the L-shaped rotating robotic arm rotates another 90°, and the positioned battery cell is transferred to the loading station A, and the battery cell is placed on the carrier unit 110 corresponding to the loading station A. It should be noted that the two suction cups of the L-shaped rotating robotic arm can work simultaneously, that is, one suction cup absorbs the battery cell on the loading and conveying device 510, and the other suction cup absorbs the battery cell that has been positioned. After the L-shaped rotating robotic arm rotates 90°, one suction cup places the battery cell obtained from the loading and conveying device 510 on the position adjustment mechanism for positioning, and the other suction cup places the positioned battery cell on the carrier unit 110.

[0108] Furthermore, the unloading conveyor 610 is a conveyor belt, as shown in FIG6 . For the above embodiment, in order to ensure that the direction of the battery cells transferred from the carrier device 100 to the unloading conveyor 610 is consistent with the direction of the battery cells transferred from the loading conveyor 510, the unloading and handling device 620 is a straight-line rotary robotic arm, including a second rotary drive actuator and a straight-line robotic arm connected to the second rotary drive actuator. A suction cup for downwardly adsorbing the battery cells is connected to the end of the robotic arm, and the robotic arm can rotate 90° at a time. The second rotary drive actuator is used to cause the suction cup on the straight-line robotic arm to repeatedly rotate 90° back and forth between the unloading conveyor 610 and the carrier unit 110 corresponding to the unloading station D. By adopting the straight-line rotary robotic arm, due to its rotary drive mode, the speed of moving the battery cells is faster, while ensuring the consistency of the loading and unloading orientation of the battery cells, and further improving production capacity.

[0109] As another solution, as shown in FIG7 , the loading and unloading transmission device 510 and the unloading and unloading transmission device 610 are both conveyor belts, the loading and unloading conveying device 520 and the unloading and unloading conveying device 620 are both linear robotic arms, the loading and unloading conveying device 520 includes a loading drive actuator and two suction cups connected to the loading drive actuator, and the unloading conveying device 620 includes a unloading drive actuator and a suction cup connected to the unloading drive actuator; the loading and unloading drive actuators can be linear motors for carrying their respective suction cups for linear Linear motion; wherein the loading and conveying device 510, positioning station E, loading station A, unloading station D, and unloading conveying device 610 are arranged in a colinear sequence; the loading drive actuator with two suction cups is simultaneously located above the loading and conveying device 510 and the position adjustment mechanism, or simultaneously located above the position adjustment mechanism and the carrier unit 110 corresponding to the loading station A; the unloading drive actuator with the suction cups moves back above the unloading conveying device 610 and the carrier unit 110 corresponding to the unloading station D to facilitate the loading, positioning, and unloading of battery cells. The position adjustment mechanism can take various forms, such as a camera, an XYθ platform, or the aforementioned mechanical center alignment device. During operation, the linear robotic arm picks up the battery cell conveyed by the loading and conveying device 510 and then moves horizontally to the positioning station E for positioning. After positioning, the linear robotic arm transfers the battery cell from the positioning station E to the loading station A and places the battery cell on the carrier unit 110 corresponding to the loading station A. It should be noted that the two suction cups of the linear robotic arm can work simultaneously, that is, one suction cup sucks the battery cell on the loading and conveying device 510, and the other suction cup absorbs the battery cell that has been positioned, and then moves horizontally for a distance, so that one suction cup places the battery cell obtained from the loading and conveying device 510 on the position adjustment mechanism for positioning, and the other suction cup places the positioned battery cell on the carrying unit 110.

[0110] As another embodiment, as shown in FIG6 , a loading buffer module 700 is provided on the transmission path of the loading transmission device 510, and / or a unloading buffer module is provided on the transmission path of the unloading transmission device 610 (not shown in the figure, and similar in structure to the loading buffer module 700). The loading buffer module 700 is a conventional structure in the prior art, for example, including a material box provided on the side of the loading transmission device 510 and a loading buffer conveying device provided above the loading transmission device 510 and the loading buffer module 700. By providing the loading buffer module 700, when it is necessary to temporarily store the battery cells transmitted by the loading transmission device 510, the battery cells on the loading transmission device 510 can be conveyed to the material box through the loading buffer conveying device. The working principle of the unloading buffer module is similar to that of the loading buffer module 700.

[0111] As another embodiment, as shown in Figures 8 and 9, the carrying device 100 is an interactive module, which also has a loading station and an unloading station, with the first processing station and the second processing station arranged between the loading station and the unloading station; the carrying device 100 also includes a base, and four stations are arranged on the base; the first drive mechanism includes two transverse modules 121 arranged on both sides of the base, and the first drive mechanism 120 also includes at least two Z-axis modules 122 connected to the transverse modules 121. The interactive module includes at least two carrying units 110, and the at least two carrying units 110 are respectively connected to at least two Z-axis modules 122, and the number of Z-axis modules 122 corresponds to the number of carrying units 110. More specifically, the carrying unit 110 in the interactive module is a carrying platform, which can be configured as a negative pressure adsorption carrying platform to prevent the battery cells from shifting during movement. In this embodiment, assuming that the loading station, first processing station, second processing station, and unloading station are arranged sequentially along the first direction, and the plurality of first front conductive units and the plurality of second front conductive units are arranged sequentially along the first direction, to prevent the first electrode 10 from affecting laser irradiation, the position where the first electrode 10 in the second electrical input module 320 contacts the cell at the second processing station is offset from the position where the first electrode 10 in the first electrical input module 220 contacts the cell at the first processing station. This can also be achieved through the use of an interactive platform module.

[0112] The interactive platform can have various structural forms. As one of them, as shown in Figure 8, the carrying device 100 includes at least three carrying units 110, and the at least three carrying units 110 are respectively connected to at least three Z-axis modules 122. The number of Z-axis modules 122 corresponds to the number of carrying units 110, wherein one carrying unit 110 can be used to carry at least one battery cell; a Z-axis module 122 and a carrying unit 110 constitute a conveying assembly, that is, the carrying device 100 includes at least three conveying assemblies, and the at least three conveying assemblies are configured to drive the first carrying unit 110 of the at least three carrying units 110 to move from the first processing station to the second processing station, the second carrying unit 110 of the at least three carrying units 110 to move from the processing station to the first processing station, and the third carrying unit 110 of the at least three carrying units 110 to move left and right in the horizontal direction and / or up and down in the vertical direction from the second processing station to pass through the unloading station, the loading station, the first processing station, the second processing station in turn, and alternately cycle. Through the above-mentioned interactive modules, the processing efficiency of the equipment can be greatly improved while achieving mass production.

[0113] As one of them, more specifically, as shown in Figure 9, the carrying device 100 includes at least two carrying units 110, and the at least two carrying units 110 are respectively connected to at least two Z-axis modules 122, and the number of Z-axis modules 122 corresponds one-to-one to the number of carrying units 110, and one carrying unit 110 can be used to carry at least two battery cells; a Z-axis module 122 and a carrying unit 110 constitute a conveying assembly, that is, the carrying device 100 includes at least two conveying assemblies, and the at least two conveying assemblies are configured to drive the first carrying unit 110 of the at least two carrying units 110 to move from the first processing station to the second processing station with the first battery cell it carries, and then move from the first processing station to the second processing station with the second battery cell it carries, and the second carrying unit 110 of the at least two carrying units 110 moves left and right in the horizontal direction and / or up and down in the vertical direction from the second processing station with the two battery cells, and passes through the unloading station, the loading station, the first processing station, the second processing station in sequence, and alternates and cycles.

[0114] As another embodiment, as shown in Figure 10, the carrying unit 110 is a conveyor belt module, which includes a belt, which serves as the carrying unit. The first drive mechanism 110 rotates the belt so that the belt carries the battery cells through the first processing station and the second processing station in sequence. More specifically, in this embodiment, the belt can be configured as a conductive belt, or a conductive plate can be placed on the belt, with the conductive plate serving as the conductive portion 130, and the battery cells placed on the conductive plate. The first drive mechanism 110 rotates the belt so that the belt carries the conductive plate and the battery cells on the conductive plate through the first processing station and the second processing station in sequence. The first drive mechanism 120 is the drive structure in a conventional belt conveyor assembly. More specifically, adsorption channels can also be provided on the belt surface to prevent the battery cells from shifting during movement. Furthermore, the conveyor belt can be two narrow belts spaced apart, thereby providing a hollow portion of the carrying unit.

[0115] Example 1

[0116] As shown in Figure 6, the laser induced sintering processing equipment has a loading station A, a first processing station B, a first processing station C and an unloading station D in sequence. The laser induced sintering processing equipment includes a carrying device 100, a first laser module 210 and a first electric input module 220 arranged at the first processing station, and a second laser module 310 and a second electric input module 320 arranged at the second processing station; the carrying device 100 includes four carrying units 110 for carrying battery cells and a first driving mechanism 120 for driving the four carrying units 110 to pass through the loading station A, the first processing station B, the first processing station C and the unloading station D in sequence; the first driving mechanism 120 is a rotary driving mechanism. The first electrical input module 220 and the second electrical input module 320 each include a conductive module and a second drive mechanism 40. The conductive module includes a first electrode 10, a second electrode, and a conductive connector 20. Each carrier unit 110 is a carrier platform. The second electrode is a conductive plate disposed on the carrier platform surface, which supports the battery cell. The conductive connector 20, driven by the second drive mechanism 40, contacts the conductive plate, thereby achieving electrical connection. In this embodiment, the first processing station is arranged perpendicular to the second processing station, and the extension direction of the front conductive unit of the first electrode 10 in the first electrical input module 220 is arranged perpendicular to the extension direction of the front conductive unit of the first electrode 10 in the second electrical input module 320.

[0117] Loading station A is equipped with a loading conveyor 510 and a loading and handling device 520, while unloading station D is equipped with a unloading conveyor 610 and a unloading and handling device 620. Positioning station E, equipped with a position adjustment mechanism, is located between loading conveyor 510 and carrier 100. Loading and handling device 520 is an L-shaped rotating robotic arm, with positioning station E positioned along its rotation path. Unloading and handling device 620 is a straight-line rotating robotic arm.

[0118] Example 2

[0119] As shown in Figure 7, the difference from the above embodiment lies in the different structures of the loading and unloading conveying device 520 and the unloading and unloading conveying device 620. This embodiment uses a linear robotic arm, and the specific working method is described above. In addition, the positioning station E in this embodiment is arranged in line with the loading and unloading stations.

[0120] The various embodiments in this specification are described in a progressive, parallel, or combined manner. Each embodiment focuses on the differences from other embodiments, and reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For relevant parts, refer to the description of the methods.

[0121] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A laser induced sintering processing device, wherein: The processing equipment has at least a first processing station and a second processing station, and the processing equipment includes a carrying device, a first laser module and a first electric input module arranged at the first processing station, and a second laser module and a second electric input module arranged at the second processing station; The carrying device comprises at least one carrying unit for carrying the battery sheet and a first driving mechanism for driving the carrying unit to move to the first processing station and the second processing station in sequence; Wherein, the first electric input module and the second electric input module respectively include a power supply and a conductive module, the conductive modules both include a first electrode and a second electrode connected to the power supply, the first electrode and the second electrode are respectively used to electrically contact the upper surface and the lower surface of the battery cell, the first electrode in the first electric input module is arranged below the first laser module, and the first electrode in the second electric input module is arranged below the second laser module; the first electrode is located above the carrying unit, and the first laser module and the second laser module are respectively used to emit laser beams to scan the battery cell when the conductive modules of the first electric input module and the second electric input module are electrically connected to the upper and lower surfaces of the battery cell; The position where the first electrode in the second electrical input module contacts the battery cell at the second processing station is offset from the position where the first electrode in the first electrical input module contacts the battery cell at the first processing station.

2. The laser induced sintering processing equipment according to claim 1, wherein: The first electrode in the first electrical input module includes at least one strip-shaped electrode, called a first front conductive unit, and the first electrode in the second electrical input module includes at least one strip-shaped electrode, called a second front conductive unit.

3. The laser induced sintering processing equipment according to claim 2, wherein: The first electrode comprises any one of an elastic probe row, an elastic conductive wire or an elastic electrode sheet.

4. The laser induced sintering processing equipment according to claim 2, wherein: The first processing station and the second processing station are sequentially arranged along a first direction, and the first front conductive unit and the second front conductive unit are both extended along a direction perpendicular to the first direction; Alternatively, the first processing station is arranged perpendicularly to the second processing station, the first front conductive unit is extended along a first direction, and the second front conductive unit is extended along a direction perpendicular to the first direction.

5. The laser induced sintering processing equipment according to claim 4, wherein: The first electrode in the first electrical input module includes a plurality of first front conductive units arranged side by side, and the first electrode in the second electrical input module includes a plurality of second front conductive units arranged side by side; When the first processing station and the second processing station are arranged in sequence along the first direction, the plurality of the first front conductive units and the plurality of the second front conductive units are arranged in sequence along the first direction; Alternatively, when the first processing station is arranged perpendicularly to the second processing station, the plurality of first front conductive units are arranged in sequence along a direction perpendicular to the first direction, and the plurality of second front conductive units are arranged in sequence along the first direction.

6. The laser induced sintering processing equipment according to claim 1, wherein: The second electrode is a conductive part arranged on the supporting unit, and the conductive part contacts the lower surface of the battery cell. The conductive module also includes a conductive connecting member, and the conductive connecting member is arranged above the supporting unit, and the conductive connecting member is connected to the power supply. The first electrical input module and the second electrical input module also respectively include a second driving mechanism connected to the first electrode and the conductive connecting member. The first electrode contacts the upper surface of the battery cell when driven by the second driving mechanism, and the conductive connecting member contacts the conductive part when driven by the second driving mechanism to connect the second electrode to the power supply.

7. The laser induced sintering processing equipment according to claim 6, wherein: The conductive connection member includes at least one conductive column.

8. The laser induced sintering processing equipment according to claim 6, wherein: The conductive part is a conductive plate.

9. The laser induced sintering processing equipment according to claim 8, wherein: The size of the conductive plate is larger than that of the battery cell. When the supporting unit is located at the first processing station and / or the second processing station, the projection of the first electrode on the horizontal plane faces part of the main grid line of the battery cell, and the projection of the conductive connecting member on the horizontal plane faces the area outside the battery cell on the conductive plate.

10. The laser induced sintering processing equipment according to claim 8, wherein: The second driving mechanism is a Z-axis driving module, the first electrode and the conductive connecting member are both connected to the Z-axis driving module, and the Z-axis driving module carries the first electrode and the conductive connecting member down simultaneously until the first electrode contacts the upper surface of the battery cell, and the conductive connecting member contacts the conductive plate.

11. The laser induced sintering processing equipment according to claim 8, wherein: The carrying unit is a carrying platform, the conductive plate is arranged on the upper surface of the carrying platform, and the battery cell is placed on the conductive plate.

12. The laser induced sintering processing equipment according to claim 11, wherein: The support platform is a negative pressure adsorption support platform, that is, an adsorption cavity is arranged inside the support platform, and a plurality of first adsorption channels are arranged on the surface of the support platform. The first adsorption channels are connected to the adsorption cavity, and the adsorption cavity is connected to a vacuum generating device.

13. The laser induced sintering processing equipment according to claim 12, wherein: The conductive plate is provided with a plurality of second adsorption channels, the second adsorption channels are communicated with the first adsorption channels, and the second adsorption channels are used to adsorb and fix the battery sheet on the conductive plate.

14. The laser induced sintering processing equipment according to claim 12, wherein: The conductive plate does not cover the first adsorption channel.

15. The laser induced sintering processing equipment according to claim 1, wherein: The laser induced sintering processing equipment further includes a positioning station, which is arranged before the first processing station and the second processing station according to the transmission direction of the battery sheet in the processing equipment; The positioning station is provided with a position adjustment mechanism for adjusting the position of the battery cell. When the carrying unit transfers the battery cell with the adjusted position to the first processing station and / or the second processing station, the first electrode faces part of the main grid line of the battery cell.

16. The laser induced sintering processing equipment according to claim 1, wherein: The carrying device includes at least two carrying units for carrying battery cells, and the first driving mechanism is used to drive one of the at least two carrying units to move from the first processing station to the second processing station, and is also used to drive another carrying unit of the at least two carrying units to move to the first processing station.

17. The laser induced sintering processing equipment according to claim 1, wherein: The carrying unit includes a hollow portion, the second electrode is arranged below the hollow portion, the first electrical input module and the second electrical input module further include second driving mechanisms connected to the first electrode and the second electrode respectively, the first electrode contacts the upper surface of the battery cell under the drive of the second driving mechanism, and the electrode of the second electrode passes through the hollow portion and directly contacts the lower surface of the battery cell under the drive of the second driving mechanism.

18. The laser induced sintering processing equipment according to claim 17, wherein: The second electrode includes at least one strip electrode or at least one conductive column or conductive plate.

19. The laser induced sintering processing equipment according to any one of claims 1 to 18, wherein: The bearing device is a turntable module, the bearing unit is a bearing platform, the first driving mechanism is a rotation driving mechanism, and the turntable module further includes a horizontally arranged and centrally symmetrical support frame; The driving shaft of the rotary driving mechanism is vertically arranged and connected to the center of the support frame; the bearing device includes at least two bearing units, the bearing units are installed on the support frame, and the distances from the bearing units to the center of the support frame are equal.

20. The laser induced sintering processing equipment according to claim 19, wherein: The turntable module includes four bearing units, which are equidistantly distributed along the circumference of the support frame, and the first processing station is adjacent to the second processing station; The first electrode in the first electrical input module includes at least one strip-shaped electrode, called a first front conductive unit, and the first electrode in the second electrical input module includes at least one strip-shaped electrode, called a second front conductive unit; the first front conductive unit is extended along a first direction, and the second front conductive unit is arranged along a direction perpendicular to the first direction.

21. The laser induced sintering processing equipment according to claim 20, wherein: The processing equipment further has a third station and a fourth station, and the first driving mechanism drives the carrying unit to sequentially pass through the third station, the first processing station, the second processing station and the fourth station.

22. The laser induced sintering processing equipment according to claim 21, wherein: A loading and conveying device is provided corresponding to the third station, and a unloading and conveying device is provided corresponding to the fourth station; the third station is a loading station, and the fourth station is an unloading station, wherein a line connecting the loading station and the unloading station is parallel to a line connecting the loading and conveying device and the unloading and conveying device.

23. The laser induced sintering processing equipment according to claim 21, wherein: The third station is a loading station, and the fourth station is a unloading station; A loading transmission device and a loading handling device are provided corresponding to the loading station, and a unloading transmission device and a unloading handling device are provided corresponding to the unloading station; A positioning station is arranged between the feeding transmission device and the turntable module, and a position adjustment mechanism is arranged at the positioning station.

24. The laser induced sintering processing equipment according to claim 23, wherein: The loading and conveying device is a conveying belt, and the loading and handling device is an L-shaped rotating mechanical arm, including a first rotating driving actuator and two mechanical arms connected to the first rotating driving actuator and perpendicular to each other, and the ends of the two mechanical arms are respectively connected to suction cups for adsorbing the battery sheets downward, and the rotating mechanical arm can rotate 90° at a time; The loading and conveying device, the loading station, the unloading station, and the unloading and conveying device are arranged in a collinear manner; the position adjustment mechanism is arranged on the mid-perpendicular line between the output end of the loading and conveying device and the loading station, that is, the position adjustment mechanism is arranged at a position directly below the suction cup when the L-shaped rotating mechanical arm rotates 90° and stops; The first rotary drive actuator with the suction cups on the two robot arms is respectively and simultaneously located above the loading and conveying device and the position adjustment mechanism, or is respectively and simultaneously located above the position adjustment mechanism and the carrying unit corresponding to the loading station.

25. The laser induced sintering processing equipment according to claim 23, wherein: The position adjustment mechanism is a mechanical center alignment device, which includes a supporting mechanism for supporting the battery cell, four push plates arranged in a square shape around the supporting mechanism, and a driving member connected to the push plates, and the driving member moves the four push plates toward the center of the battery cell to achieve battery cell positioning.

26. The laser induced sintering processing equipment according to claim 23, wherein: The unloading transmission device is a conveyor belt, and the unloading handling device is a straight-line rotating mechanical arm, including a second rotating driving actuator and a straight-line mechanical arm connected to the second rotating driving actuator, and a suction cup for adsorbing the battery sheet downward is connected to the end of the mechanical arm, and the mechanical arm can rotate 90° at a time; The second rotary drive actuator carries the suction cup on the I-shaped robot arm to move back and forth above the unloading transmission device and the carrying unit corresponding to the unloading station.

27. The laser induced sintering processing equipment according to claim 23, wherein: The loading and unloading transmission device and the unloading and unloading transmission device are both conveyor belts, the loading and unloading handling device and the unloading and unloading handling device are both linear mechanical arms, the loading and unloading device includes a loading drive actuator and two suction cups connected to the loading drive actuator, and the unloading and unloading device includes a unloading drive actuator and a suction cup connected to the unloading drive actuator; Among them, the feeding transmission device, the positioning station, the feeding station, the unloading station, and the unloading transmission device are arranged in a co-linear manner, and the feeding drive actuator with two suction cups is simultaneously located on the feeding transmission device. The device is located above the position adjustment mechanism, or is located above the position adjustment mechanism and the carrying unit corresponding to the loading station at the same time; the unloading driving actuator moves back with the suction cup above the unloading transmission device and the carrying unit corresponding to the unloading station.

28. The laser induced sintering processing equipment according to claim 23, wherein: A loading buffer module is arranged on the transmission path of the loading transmission device, and / or a unloading buffer module is arranged on the transmission path of the unloading transmission device.

29. The laser induced sintering processing equipment according to any one of claims 1 to 18, wherein: The carrying device is an interactive module, which also has a loading station and an unloading station, and the first processing station and the second processing station are arranged between the loading station and the unloading station; the carrying device also includes a base, and four stations are arranged on the base; the first driving mechanism includes two transverse modules arranged on both sides of the base, and the first driving mechanism also includes at least two Z-axis modules connected to the transverse modules, and the interactive module includes at least two carrying units, and at least two of the carrying units are respectively connected to at least two Z-axis modules, and the number of the Z-axis modules corresponds one to one to the number of the carrying units.

30. The laser induced sintering processing equipment according to any one of claims 1 to 18, wherein: The bearing device is a conveyor belt module, the conveyor belt module includes a belt, the belt is a bearing unit, and the first driving mechanism drives the belt to rotate.

31. The laser induced sintering processing equipment according to any one of claims 1 to 18, wherein: The carrying device is any one of a turntable module, an interactive module or a conveyor belt module.

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