Laser processing equipment

Abstract

The invention discloses laser processing equipment which comprises a feeding conveying part, a feeding carrying mechanism, a laser processing part, a discharging carrying mechanism and a discharging conveying part. The feeding conveying part is used for inputting battery pieces to be processed; the feeding carrying mechanism is used for picking up the battery pieces from the feeding conveying part and carrying the picked-up battery pieces to the laser processing part; the laser processing part is used for implementing laser enhanced contact optimization processing on the battery piece; the discharging carrying mechanism is used for picking up the battery pieces subjected to laser enhanced contact optimization treatment from the laser treatment part and carrying the picked battery pieces to the discharging conveying part; and the discharging conveying part is used for conveying the battery piece to a subsequent station. Through cooperation of the feeding conveying part, the feeding carrying mechanism, the laser processing part, the discharging carrying mechanism and the discharging conveying part, the laser processing equipment provided by the invention realizes automation of the laser enhanced contact optimization processing process of the battery piece, and manual intervention is not needed in the processing process, so that the processing efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of cell processing, and specifically to a laser processing device. Background Art

[0002] Laser Enhanced Contact Optimization (LECO) is a laser processing technology that can reduce the contact resistance between the metal gate on the surface of the cell and the silicon substrate, thereby improving cell efficiency.

[0003] Due to the lack of specialized online laser enhanced contact optimization processing equipment, the current practice is to manually place the battery cells to be processed on the machine, then apply a predetermined voltage to the battery cells through a power-on device, and then scan the battery cells through a laser scanning device to complete the LECO processing of the battery cells. After the processing is completed, the battery cells are manually removed from the machine and sent to the next station. The existing laser enhanced contact optimization processing method has low processing efficiency and is difficult to meet the processing needs of batch battery cells. Summary of the invention

[0004] In view of the above-mentioned defects of the existing laser enhanced contact optimization processing method, the present application provides a laser processing device, and its specific technical solution is as follows:

[0005] A laser processing device comprises a loading and conveying part, a loading and conveying mechanism, a laser processing part, a unloading and conveying mechanism and an unloading and conveying part, wherein:

[0006] The loading and conveying part is used to input the battery cells to be processed;

[0007] The loading and transporting mechanism is used to pick up the battery cells from the loading and transporting part, and transport the picked-up battery cells to the laser processing part;

[0008] The laser processing unit is used to implement laser enhanced contact optimization processing on the battery cell;

[0009] The material unloading and conveying mechanism is used to pick up the battery cells that have completed the laser enhanced contact optimization treatment from the laser processing part, and to convey the picked-up battery cells to the material unloading and conveying part;

[0010] The unloading conveying section is used to convey the battery cells to the subsequent workstations.

[0011] Through the cooperation of the loading and conveying part, the loading and transporting mechanism, the laser processing part, the unloading and transporting mechanism and the unloading and conveying part, the laser processing equipment provided in the present application realizes the automation of the laser enhanced contact optimization processing process of the battery cell, and no human intervention is required during the processing, thereby improving the processing efficiency.

[0012] In some embodiments, the loading and conveying section includes a loading and conveying line, a PL detection mechanism and a first NG piece rejection mechanism, wherein: the loading and conveying line is used to convey the battery cells to be processed, and at least a PL detection station and an NG piece rejection station are provided on the conveying path of the loading and conveying line; the PL detection mechanism is arranged at the PL detection station, for implementing PL detection on the battery cells conveyed to the PL detection station; the first NG piece rejection mechanism is arranged at the NG piece rejection station, for rejecting the battery cells that fail the inspection from the loading and conveying line; the loading and transporting mechanism is used to pick up the battery cells that pass the inspection from the loading and conveying line, and transport the picked up battery cells that pass the inspection to the laser processing section.

[0013] Before implementing the laser enhanced contact optimization treatment, the product qualification rate of the battery cells that have completed the laser enhanced contact optimization treatment can be improved by performing PL (photoluminescence) detection on the battery cells and eliminating unqualified battery cells determined by PL detection.

[0014] In some embodiments, the laser processing unit includes a conveyor line, a lifting conveyor mechanism, a front power-on mechanism, a camera and a laser scanning mechanism, wherein: the loading and transporting mechanism transports the battery cells picked up from the loading and transporting unit to the conveyor line; the conveyor line is used to transport the battery cells, and a positioning station, a lifting station and a laser processing station are sequentially arranged on the conveying path of the conveyor line; the camera is arranged above the positioning station, and the camera is used to locate the grid line on the front side of the battery cell located at the positioning station; the lifting and transporting mechanism is configured to lift the battery cell from the lifting station of the conveyor line, and transport the lifted battery cell to the conveyor line; To the laser processing station; the front power-on mechanism and the laser scanning mechanism are arranged above the laser processing station, wherein the front power-on mechanism is configured to power on the front side of the battery cell, and the lifting and conveying mechanism is also configured to power on the back side of the battery cell; the laser scanning mechanism is configured to perform laser scanning on the front side of the battery cell based on the information on the front side of the battery cell obtained by the camera, the information on the front side of the battery cell includes the position information of the grid lines on the front side of the battery cell and / or the position information of the light-receiving part of the front side of the battery cell; the lifting and conveying mechanism is also configured to put the battery cell that has completed the laser enhanced contact optimization treatment back to the conveyor line.

[0015] Through the cooperation of the conveyor line, the lifting conveyor mechanism, the front power-on mechanism, the camera and the laser scanning mechanism, the laser processing unit realizes the laser enhanced contact optimization processing of the battery cell. In particular, when the lifting conveyor mechanism, the front power-on mechanism and the laser scanning mechanism are performing the laser enhanced contact optimization processing on the current battery cell, the conveyor line and the camera can perform the conveying and positioning processing on the subsequent battery cells to be processed, thereby ensuring the working rhythm of each processing component and improving the processing efficiency.

[0016] In some embodiments, the conveyor line includes a first branch conveyor line and a second branch conveyor line arranged side by side; the loading and conveying mechanism continuously picks up two battery cells from the loading and conveying part, and conveys the picked up two battery cells to the first branch conveyor line and the second branch conveyor line respectively; the first branch conveyor line and the second branch conveyor line synchronously convey the two battery cells; the lifting and conveying mechanism lifts the two battery cells from the first branch conveyor line and the second branch conveyor line, and synchronously conveys the two lifted battery cells to the laser processing station; the lifting and conveying mechanism puts the two battery cells that have completed the laser enhanced contact optimization processing back to the first branch conveyor line and the second branch conveyor line respectively.

[0017] Highly efficient and synchronous laser-enhanced contact optimization processing of two battery cells is achieved, improving processing efficiency.

[0018] In some embodiments, the lifting and conveying mechanism includes a middle lifting and conveying part and a side lifting and conveying part arranged on the side of the middle lifting and conveying part. The middle lifting and conveying part and the side lifting and conveying part are configured to alternately lift two batteries from the first branch conveying line and the second branch conveying line, and alternately convey the two lifted battery cells to the laser processing station.

[0019] The middle lifting and conveying part and the side lifting and conveying part alternately convey the two lifted battery cells to the laser processing station, further improving the processing efficiency.

[0020] In some embodiments, the intermediate lifting and conveying part includes an intermediate translation module, an intermediate lifting module, a first load platform and a second load platform, wherein: the intermediate lifting module is connected to the movable part of the intermediate translation module, and the first load platform and the second load platform are connected side by side to the movable part of the intermediate lifting module; the intermediate lifting module is used to drive the first load platform to lift one of the two battery cells from the first branch conveyor line, and drive the second load platform to lift the other of the two battery cells from the second branch conveyor line; the intermediate translation module is used to drive the first load platform and the second load platform to translate, so as to synchronously convey the two battery cells to the laser processing station.

[0021] By setting the intermediate lifting and conveying part, the intermediate lifting and conveying part can synchronously lift out a battery cell on the first branch conveying line and another battery cell on the second branch conveying line, and synchronously convey the two lifted battery cells to the laser processing station.

[0022] In some embodiments, the side lifting and conveying unit includes a first side lifting and conveying unit arranged on the first side of the middle translation module, and a second side lifting and conveying unit arranged on the second side of the middle translation module, wherein: the first side lifting and conveying unit includes a first side translation module, a first side lifting module and a third bearing platform, wherein the first side lifting module is connected to the movable part of the first side translation module, the third bearing platform is connected to the movable part of the first side lifting module, the first side lifting module is used to drive the third bearing platform to lift one of the two battery cells from the first branch conveyor line, and the first side translation module is used to drive the third bearing platform to lift one of the two battery cells from the first branch conveyor line. The third carrier platform is driven to translate to transport the battery cell lifted by the third carrier platform to the laser processing station; the second side lifting and conveying part includes a second side translation module, a second side lifting module and a fourth carrier platform, wherein the second side lifting module is connected to the movable part of the second side translation module, the fourth carrier platform is connected to the movable part of the second side lifting module, the second side lifting module is used to drive the fourth carrier platform to lift the other of the two battery cells from the second branch conveyor line, and the second side translation module is used to drive the fourth carrier platform to translate to transport the battery cell lifted by the fourth carrier platform to the laser processing station.

[0023] By setting the side lifting and conveying part, the side lifting and conveying part can synchronously lift out a battery cell on the first branch conveying line and another battery cell on the second branch conveying line, and synchronously convey the two lifted battery cells to the laser processing station.

[0024] In some embodiments, the first carrier platform, the second carrier platform, the third carrier platform and the fourth carrier platform have the same structure, and the first carrier platform includes a substrate, an adsorption plate and an upper power carrier sheet, wherein: the adsorption plate is arranged on the substrate, and a negative pressure air cavity is provided in the adsorption plate; the upper power carrier sheet is arranged on the adsorption plate, and an adsorption hole connected to the negative pressure air cavity is provided on the upper power carrier sheet; the upper power carrier sheet is used to carry the battery cell and to electrify the electrodes on the back of the battery cell; the adsorption plate adsorbs and fixes the battery cell on the upper power carrier sheet through the negative pressure air cavity and the adsorption hole.

[0025] By setting the carrying platform, the carrying platform can not only carry the battery cell by adsorption, but also power on the battery cell from the back.

[0026] In some embodiments, the front-side power-on mechanism is arranged as two groups side by side, and each group of the front-side power-on mechanism respectively powers on the front side of one of the two battery cells located at the laser processing station; the laser scanning mechanism is arranged as two groups side by side, and each group of the laser scanning mechanism respectively performs laser scanning on one of the two battery cells located at the laser processing station.

[0027] Efficient and synchronous laser-enhanced contact optimization processing of two battery cells is achieved.

[0028] In some embodiments, each group of front-side power-on mechanisms includes a lifting drive mechanism, a mounting bracket, a first-end power-on row and a second-end power-on row, wherein: the mounting bracket is connected to a movable part of the lifting drive mechanism, and the lifting drive mechanism is used to drive the mounting bracket to lift and lower; the first-end power-on row and the second-end power-on row are arranged side by side on the mounting bracket; when the lifting drive mechanism drives the mounting bracket to descend to a low position, the first-end power-on row and the second-end power-on row respectively abut against the two ends of the front side of the battery cell to implement powering on the front side of the battery cell.

[0029] By setting the front power-on mechanism, the front power-on mechanism can power on the front of the battery cell from both ends. In addition, the first end power-on row and the second end power-on row power on the front of the battery cell from both ends, thereby avoiding the laser scanning mechanism and ensuring that the laser scanning mechanism can perform laser scanning on the grid lines and / or light-receiving parts on the front of the battery cell.

[0030] In some embodiments, the mounting bracket includes a first mounting plate, a second mounting plate, a first mounting beam and a second mounting beam, wherein: the first mounting plate is provided with a first connecting hole extending in a vertical direction, and the second mounting plate is adjustably connected to the first mounting plate via the first connecting hole in an up-and-down manner; the second mounting plate is provided with a second connecting hole and a third connecting hole extending in a horizontal direction; the first mounting beam is adjustably connected to the second mounting plate in a horizontal position via the second connecting hole, and the first end upper bar is mounted on the first mounting beam; the second mounting beam is adjustably connected to the second mounting plate in a horizontal position via the third connecting hole, and the second end upper bar is mounted on the second mounting beam.

[0031] By adjusting the installation position of the second installation plate on the first installation plate, the height of the first end upper power bar and the second end upper power bar can be adjusted. Ensure that when the lifting drive mechanism drives the mounting bracket to a low position, the first end upper power bar and the second end upper power bar can be pressed on the front of the battery cell with a suitable force. By adjusting the installation position of the first installation beam and the second installation beam on the second installation plate, the spacing between the first installation beam and the second installation beam can be adjusted, thereby achieving compatibility with battery cells of different sizes.

[0032] In some embodiments, the first upper power row and the second upper power row have the same structure, and the first upper power row includes a plurality of elastic pressure pin assemblies arranged side by side; when the lifting drive mechanism drives the mounting bracket to descend to a low position, each elastic pressure pin assembly is elastically pressed against the grid line at the edge of the battery cell.

[0033] The first power-on row and the second end power-on row are elastically pressed onto the two ends of the battery cell to power on the front side of the battery cell, which can ensure the power-on effect and prevent the battery cell from being damaged by pressure.

[0034] In some embodiments, the loading and handling mechanism includes a loading rotation drive unit, a first loading swing arm and a second loading swing arm, wherein: the first loading swing arm and the second loading swing arm are both connected to the loading rotation drive unit, and the loading rotation drive unit is used to drive the first loading swing arm and the second loading swing arm to rotate synchronously, so as to drive the first loading swing arm and the second loading swing arm to alternately pick up battery cells from the loading conveying unit, and place the picked up battery cells on the first branch conveyor line and the second branch conveyor line respectively; when the picking end of the first loading swing arm rotates to the top of the loading conveying unit, the second loading swing arm rotates to the top of the second branch conveyor line; when the picking end of the second loading swing arm rotates to the top of the loading conveying unit, the first loading swing arm rotates to the top of the first branch conveyor line.

[0035] By setting up the loading and conveying mechanism, the loading and conveying mechanism can continuously and alternately divert and convey the battery cells on the loading and conveying part to the first branch conveyor line and the second branch conveyor line, thereby improving the loading efficiency and facilitating subsequent processing.

[0036] In some embodiments, the unloading and handling mechanism includes a unloading rotary drive unit, a first unloading swing arm and a second unloading swing arm, wherein: the first unloading swing arm and the second unloading swing arm are both connected to the unloading rotary drive unit, and the unloading rotary drive unit is used to drive the first unloading swing arm and the second unloading swing arm to rotate synchronously, so as to drive the first unloading swing arm and the second unloading swing arm to alternately pick up battery cells from the first branch conveyor line and the second branch conveyor line, and place the picked up battery cells on the unloading conveying unit; when the picking end of the first unloading swing arm rotates to above the first branch conveyor line, the second loading swing arm rotates to above the unloading conveying unit; when the picking end of the second loading swing arm rotates to above the second branch conveyor line, the first unloading swing arm rotates to above the unloading conveying unit.

[0037] By setting up the unloading and conveying mechanism, the unloading and conveying mechanism can alternately convey the processed battery cells on the first branch conveyor line and the second branch conveyor line to the unloading and conveying part, thereby improving the unloading efficiency.

[0038] In some embodiments, the laser processing equipment further includes a second NG sheet rejecting mechanism disposed on the side of the unloading and conveying portion, and the second NG sheet rejecting mechanism is used to reject unqualified battery sheets from the unloading and conveying portion.

[0039] The unqualified battery cells can be removed to prevent them from entering the subsequent process. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of the laser processing equipment in the embodiment of the present application;

[0041] Figure 2It is a structural schematic diagram of the loading and conveying part, the loading and handling mechanism and the conveying line in the embodiment of the present application;

[0042] Figure 3 It is a schematic diagram of the structure of the laser processing part in the embodiment of the present application;

[0043] Figure 4 It is a structural schematic diagram of the front power-on mechanism in the embodiment of the present application;

[0044] Figure 5 It is a structural schematic diagram of the lifting and conveying mechanism in an embodiment of the present application at one viewing angle;

[0045] Figure 6 It is a structural schematic diagram of the lifting and conveying mechanism in the embodiment of the present application from another perspective;

[0046] Figure 7 This is a schematic diagram of the structure of the first supporting platform in the embodiment of the present application;

[0047] Figure 8 It is a schematic diagram of the structure of the conveying line, material handling mechanism and unloading conveying part in the embodiment of the present application;

[0048] Figures 1 to 8 Included:

[0049] Feeding and conveying part 1:

[0050] Feeding conveyor line 11, PL detection mechanism 12, first NG sheet rejection mechanism 13, buffer mechanism 14, temperature control mechanism 15;

[0051] Loading and transporting mechanism 2:

[0052] Feeding rotary drive unit 21;

[0053] First feeding swing arm 22;

[0054] The second feeding swing arm 23;

[0055] Laser processing part 3:

[0056] Conveyor line 31: a first branch conveyor line 311 and a second branch conveyor line 312;

[0057] Lifting conveying mechanism 32:

[0058] The intermediate lifting and conveying part 321 includes an intermediate translation module 3211, an intermediate lifting module 3212, a first bearing platform 3213, a second bearing platform 3214, a base plate 3215, an adsorption plate 3216, an upper power bearing sheet 3217, and an avoidance groove 3218;

[0059] The first side lifting and conveying part 322 includes a first side translation module 3221 , a first side lifting module 3222 , and a third bearing platform 3223 ;

[0060] The second side lifting and conveying part 323: a second side translation module 3231, a second side lifting module 3232, and a fourth bearing platform 3233;

[0061] Front power-on mechanism 33:

[0062] Mounting bracket 332: first mounting plate 3321, second mounting plate 3322, first mounting beam 3323, second mounting beam 3324;

[0063] The first end upper electric row 333: elastic pressure pin assembly 334;

[0064] The second end has a power bar 335;

[0065] Camera 34;

[0066] Laser scanning mechanism 35;

[0067] Unloading and handling mechanism 4:

[0068] Unloading rotary driving unit 41;

[0069] First unloading swing arm 42;

[0070] Second unloading swing arm 43;

[0071] Unloading conveying part 5:

[0072] The second NG piece rejecting mechanism 6. DETAILED DESCRIPTION

[0073] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0074] The term "powering on" as used in this application refers to establishing an electrical connection with a predetermined target so that it generates a current or voltage of a predetermined magnitude and direction.

[0075] like Figure 1 As shown, the laser processing equipment in the embodiment of the present application includes a loading and conveying part 1, a loading and conveying mechanism 2, a laser processing part 3, a unloading and conveying mechanism 4 and an unloading and conveying part 5, wherein:

[0076] The loading and conveying part 1 is used to input the battery cells to be processed.

[0077] The loading and transporting mechanism 2 is used to pick up the battery cells from the loading and transporting part 1 and transport the picked-up battery cells to the laser processing part 3 .

[0078] The laser processing unit 3 is used to perform laser enhanced contact optimization processing on the battery cell.

[0079] The material unloading and conveying mechanism 4 is used to pick up the battery cells that have completed the laser enhanced contact optimization treatment from the laser processing unit 3, and to convey the picked-up battery cells to the material unloading and conveying unit 5.

[0080] The unloading conveying part 5 is used to convey the battery cells to the subsequent workstations.

[0081] It can be seen that through the cooperation of the loading and conveying part 1, the loading and transporting mechanism 2, the laser processing part 3, the unloading and transporting mechanism 4 and the unloading and conveying part 5, the laser processing equipment provided in the embodiment of the present application realizes the full automation of the laser enhanced contact optimization processing process of the battery cell, and no manual intervention is required for loading, processing and unloading, thereby improving the processing efficiency.

[0082] Continue to refer Figure 1 As shown, optionally, the loading and conveying part 1 includes a loading and conveying line 11, a PL detection mechanism 12 and a first NG sheet rejection mechanism 13, wherein: the loading and conveying line 11 is used to convey the battery sheets to be processed, and at least a PL (photoluminescence) detection station and an NG sheet rejection station are provided on the conveying path of the loading and conveying line 11.

[0083] The PL detection mechanism 12 is arranged at the PL detection station, and is used to perform PL detection on the battery cells transported to the PL detection station to determine whether the battery cells have defects. The PL detection mechanism usually uses a PL camera for PL detection. Optionally, the PL camera includes at least a PL detection function, and may also include size detection, edge detection, and other functions.

[0084] The first NG sheet rejecting mechanism 13 is disposed at the NG sheet rejecting station, and is used to reject unqualified battery sheets from the loading conveyor line 11 .

[0085] The loading and transporting mechanism 2 is used to pick up the battery cells that have passed the inspection from the loading and transporting line 11 , and to transport the picked up battery cells that have passed the inspection to the laser processing unit 3 .

[0086] By setting up a PL detection mechanism 12 and a first NG sheet rejection mechanism 13 on the conveying path of the loading conveyor line 11, defect detection of the cells to be processed is achieved. Unqualified cells determined by the detection are rejected from the loading conveyor line 11, so that only qualified cells are transported by the loading and transporting mechanism 2 to the laser processing unit 3 for laser enhanced contact optimization treatment, and finally the product qualification rate of cells that have completed the laser enhanced contact optimization treatment is improved.

[0087] Optionally, a buffer station is also provided on the conveying path of the feeding conveyor line 11. The feeding conveyor part 1 also includes a buffer mechanism 14 provided at the buffer station, and the buffer mechanism 14 is used to buffer the battery cells on the feeding conveyor line and put the buffered battery cells back on the feeding conveyor line 11. By providing the buffer mechanism 14, the feeding work rhythm of the feeding and handling mechanism 2 can be kept consistent with the processing rhythm of the laser processing part 3, thereby ensuring the conveying stability and preventing the decline of production efficiency.

[0088] Optionally, the feeding conveying part 1 further includes a temperature control mechanism 15 disposed above the feeding conveying line 11, such as Figure 1 In the embodiment, the temperature control mechanism is configured as an air guide hood, which is connected to the cold air duct of the workshop outside, and can guide the cold air to the feeding conveyor line 11 below, so that the battery cells passing through the feeding conveyor line 11 are cooled to a predetermined temperature. Also optionally, the temperature control mechanism 15 can be configured as a temperature-controlled air conditioner, which at least cools the battery cells, and can include a heating function, such as using hot air to heat the battery cells, and finally achieves the purpose of adjusting the temperature of the battery cells to meet the process requirements.

[0089] Continue to refer Figure 1 As shown, optionally, the laser processing unit 3 includes a conveying line 31, a lifting and conveying mechanism 32, a front power-on mechanism 33, a camera 34 and a laser scanning mechanism 35, wherein:

[0090] The loading and conveying mechanism 2 conveys the battery cells picked up from the loading and conveying part 1 to the conveying line 31. The conveying line 31 is used to convey the battery cells. The conveying path of the conveying line 31 is provided with a positioning station, a lifting station and a laser processing station in sequence.

[0091] The camera 34 is arranged above the positioning station. The camera 34 is used to locate the grid lines on the front side of the battery cell transported to the positioning station to obtain information on the front side of the battery cell. The information on the front side of the battery cell includes at least one of the position information of the grid lines and the position information of the light-receiving part of the front side of the battery cell (i.e., the surface of the exposed grid lines).

[0092] The lifting and conveying mechanism 32 is configured to lift the battery cell from the lifting station of the conveying line 31 and convey the lifted battery cell to the laser processing station.

[0093] The front power-on mechanism 33 and the laser scanning mechanism 35 are arranged above the laser processing station, wherein the front power-on mechanism 33 is configured to power on the front side of the cell, and the lifting and conveying mechanism 32 is also configured to power on the back side of the cell. In this way, the cell has a predetermined current and voltage through the upper and lower electrical connections, which meets the process requirements.

[0094] The laser scanning mechanism 35 is configured to perform laser scanning on the front of the cell based on the information on the front of the cell acquired by the camera 34, so as to complete the laser enhanced contact optimization treatment of the cell. In the specific embodiment, the laser scanning mechanism 35 can select to scan only the grid line portion on the front of the cell, or only the light receiving portion other than the grid line on the front of the cell, or both the grid line and the light receiving portion.

[0095] After the laser scanning mechanism 35 completes the laser scanning, the lifting and conveying mechanism 32 is further configured to put the battery cells that have completed the laser enhanced contact optimization process back onto the conveying line 31. The conveying line 31 continues to convey the battery cells toward the unloading and handling mechanism 4 of the subsequent channel.

[0096] It can be seen that by configuring the laser processing unit 3 to include a conveyor line 31, a lifting conveyor mechanism 32, a front power-on mechanism 33, a camera 34, and a laser scanning mechanism 35, the laser enhanced contact optimization processing of the battery cell is realized. In particular, when the lifting conveyor mechanism 32, the front power-on mechanism 33, and the laser scanning mechanism 35 perform the laser enhanced contact optimization processing on the battery cell currently in the laser processing station, the conveyor line 31 and the camera 34 can simultaneously perform the conveying and positioning processing on the subsequent battery cell to be processed, thereby ensuring the working rhythm of each processing component and improving the processing efficiency.

[0097] like Figure 2 As shown, optionally, the conveyor line 31 includes a first branch conveyor line 311 and a second branch conveyor line 312 arranged side by side. The loading and conveying mechanism 2 continuously picks up the battery cells from the loading and conveying part 1, and conveys the picked-up battery cells to the first branch conveyor line 311 and the second branch conveyor line 312 respectively. The first branch conveyor line 311 and the second branch conveyor line 312 synchronously convey at least two battery cells. The lifting and conveying mechanism 32 lifts two battery cells from the first branch conveyor line 311 and the second branch conveyor line 312, and synchronously conveys the two lifted battery cells to the laser processing station. After the two battery cells complete the laser enhanced contact optimization treatment, the lifting and conveying mechanism 32 puts the two battery cells that have completed the laser enhanced contact optimization treatment back to the first branch conveyor line 311 and the second branch conveyor line 312 respectively. In this way, the laser enhanced contact optimization treatment of the two battery cells can be implemented at the same time, thereby further improving the processing efficiency.

[0098] like Figures 5 and 6As shown, optionally, in order to further improve the processing efficiency, the lifting and conveying mechanism 32 includes a middle lifting and conveying part 321 and a side lifting and conveying part arranged on the side of the middle lifting and conveying part 321, and the middle lifting and conveying part 321 and the side lifting and conveying part are configured to alternately lift two battery cells from the first branch conveyor line 311 and the second branch conveyor line 312, and alternately convey the two lifted battery cells to the laser processing station.

[0099] That is to say, the middle lifting conveyor 321 and the side lifting conveyor can lift two battery cells from the first branch conveyor line 311 and the second branch conveyor line 312 each time, and convey the two battery cells to the laser processing station. In some other optional embodiments, in order to save equipment costs, only the middle lifting conveyor 321 or only the side lifting conveyor can be set.

[0100] Optionally, the intermediate lifting and conveying section 321 includes an intermediate translation module 3211, an intermediate lifting module 3212, a first load-bearing platform 3213 and a second load-bearing platform 3214, wherein: the intermediate lifting module 3212 is connected to the movable part of the intermediate translation module 3211, the first load-bearing platform 3213 and the second load-bearing platform 3214 are connected side by side to the movable part of the intermediate lifting module 3212, wherein the first load-bearing platform 3213 is located below the first branch conveyor line 311, and the second load-bearing platform 3214 is located below the second branch conveyor line 312.

[0101] The optional working process of the intermediate lifting and conveying part 321 is as follows:

[0102] When the first branch conveyor line 311 and the second branch conveyor line 312 convey two battery cells to the lifting station, the intermediate translation module 3211 drives the first carrier 3213 and the second carrier 3214 to move synchronously to the bottom of the lifting station.

[0103] Next, the middle lifting module 3212 drives the first load platform 3213 and the second load platform 3214 to rise synchronously, so that the first load platform 3213 lifts one of the two battery cells from the first branch conveyor line 311, and at the same time, the second load platform 3214 lifts the other of the two battery cells from the second branch conveyor line 312.

[0104] Next, the intermediate translation module 3211 drives the first carrier 3213 and the second carrier 3214 to translate toward the laser processing station until the two battery cells are synchronously transported to the laser processing station.

[0105] When the two battery cells have completed the laser enhanced contact optimization processing, the intermediate lifting module 3212 drives the first carrier platform 3213 and the second carrier platform 3214 to descend and return to their positions, so that the two battery cells that have completed the laser enhanced contact optimization processing fall back to the first branch conveyor line 311 and the second branch conveyor line 312 respectively.

[0106] Optionally, the side lifting and conveying unit includes a first side lifting and conveying unit 322 disposed on a first side (such as the left side) of the intermediate translation module 3211, and a second side lifting and conveying unit 323 disposed on a second side (such as the right side) of the intermediate translation module 3211, wherein:

[0107] The first side lifting and conveying section 322 includes a first side translation module 3221, a first side lifting module 3222 and a third bearing platform 3223, wherein the first side lifting module 3222 is connected to the movable part of the first side translation module 3221, and the third bearing platform 3223 is connected to the movable part of the first side lifting module 3222, and is located below the first branch conveying line 311. Similarly, the second side lifting and conveying section 323 includes a second side translation module 3231, a second side lifting module 3232 and a fourth bearing platform 3233, wherein the second side lifting module 3232 is connected to the movable part of the second side translation module 3231, and the fourth bearing platform 3233 is connected to the movable part of the second side lifting module 3232, and is located below the second branch conveying line 312.

[0108] The optional working process of the side lifting conveyor is as follows:

[0109] When the first branch conveyor line 311 and the second branch conveyor line 312 convey two battery strings to the lifting station, the first side translation module 3221 drives the third carrier 3223 to move below the lifting station, and synchronously, the second side translation module 3231 drives the fourth carrier 3233 to move below the lifting station.

[0110] Next, the first side lifting module 3222 drives the third carrier 3223 to rise, so that the third carrier 3223 lifts one of the two battery cells from the first branch conveyor line 311. Simultaneously, the second side lifting module 3232 drives the fourth carrier 3233 to rise, so that the fourth carrier 3233 lifts the other of the two battery cells from the second branch conveyor line 312.

[0111] Next, the first side translation module 3221 drives the third carrier 3223 to translate toward the laser processing station, and synchronously, the second side translation module 3231 drives the fourth carrier 3233 to translate toward the laser processing station until the two battery cells are synchronously transported to the laser processing station.

[0112] When the two battery cells have completed the laser enhanced contact optimization processing, the first side lifting module 3222 is driven to descend and return to its position, so that the battery cells on it that have completed the laser enhanced contact optimization processing fall back to the first branch conveyor line 311. Simultaneously, the second side lifting module 3232 drives the fourth carrier platform 3233 to descend and return to its position, so that the battery cells on it that have completed the laser enhanced contact optimization processing fall back to the second branch conveyor line 312.

[0113] Since the first and second loading platforms 3213 and 3214 are driven by the middle lifting module 3212, the third and fourth loading platforms 3223 and 3233 are driven by the first and second side lifting modules 3222 and 3232, respectively, when they meet, Figure 6 As shown, the first carrier 3213 and the second carrier 3214 can be driven to the first height by the middle lifting module 3212, and the third carrier 3223 and the fourth carrier 3233 can be driven to the second height by the first side lifting module 3222 and the second side lifting module 3232, so that the first carrier 3213 and the third carrier 3223, the second carrier 3214 and the fourth carrier 3233 can achieve anti-collision avoidance. Optionally, the carrier that receives and transports the material can be in a high position, and the carrier that has output the battery cell and returned to receive the other two cells can be in a low position.

[0114] Optionally, the first loading platform 3213, the second loading platform 3214, the third loading platform 3223, and the fourth loading platform 3233 have the same structure. Taking the first loading platform 3213 as an example, Figure 7 As shown, it includes a substrate 3215, an adsorption plate 3216 and an upper power carrier sheet 3217, wherein: the adsorption plate 3216 is arranged on the substrate 3216, and a negative pressure air cavity is arranged in the adsorption plate 3216. The upper power carrier sheet 3217 is arranged on the adsorption plate 3216, and an adsorption hole connected to the negative pressure air cavity is arranged on the upper power carrier sheet 3217. The upper power carrier sheet 3217 is used to carry the battery cell and to electrify the electrodes on the back of the battery cell. The adsorption plate 3216 is used to adsorb and fix the battery cell on the upper power carrier sheet 3217 through the negative pressure air cavity and the adsorption hole.

[0115] By configuring the first carrier 3213 as above, the first carrier 3213 can not only carry out adsorption of the battery cell, but also power on the battery cell from the back.

[0116] The upper power carrier sheet 3217 may be a copper sheet connected to a power source.

[0117] Optionally, in order to enable the first carrier 3213 to lift the battery cells out of the first branch conveyor line 311, an avoidance groove 3218 is provided on the first carrier 3213. When the first carrier 3213 is lifted upward, the first branch conveyor line 311 sinks into the avoidance groove 3218, so that the battery cells on the first branch conveyor line 311 are transferred to the first carrier 3213. When the first carrier 3213 descends and returns to its original position, the first branch conveyor line 311 floats upward out of the avoidance groove 3218 again, so that the processed battery cells on the first carrier 3213 fall back to the first branch conveyor line 311.

[0118] As described in the above embodiments, the lifting and conveying mechanism 32 synchronously conveys two battery cells to the laser processing station each time. In order to implement synchronous processing of the two battery cells located at the laser processing station, it is optional, such as Figure 3 As shown, the front power-on mechanism 33 is arranged in two groups side by side, and each group of the front power-on mechanism 33 respectively powers on the front side of one of the two battery cells located at the laser processing station. The laser scanning mechanism 35 is also arranged in two groups side by side, and each group of the laser scanning mechanism 35 respectively performs laser scanning on one of the two battery cells located at the laser processing station.

[0119] The front power-on mechanism 33 can adopt an existing power-on mechanism that can implement power-on of the front side of the battery cell. In order to enable those skilled in the art to implement the present application more conveniently, an embodiment of the present application provides a preferred implementation method of the front power-on mechanism 33, such as Figure 4 As shown, the front power-on mechanism 33 includes a lifting drive mechanism (not shown in the figure), a mounting bracket 332, a first-end power bar 333 and a second-end power bar 335, wherein: the mounting bracket 331 is connected to the movable part of the lifting drive mechanism, and the lifting drive mechanism is used to drive the mounting bracket 331 to rise and fall.

[0120] The first-end upper power row 333 and the second-end upper power row 335 are arranged side by side on the mounting bracket 332. When the lifting drive mechanism drives the mounting bracket 332 to descend to a low position, the first-end upper power row 333 and the second-end upper power row 335 are respectively abutted against the two ends of the front surface of the battery sheet located at the laser processing station to implement powering on the front surface of the battery sheet. When the lifting drive mechanism drives the mounting bracket 332 to rise to a high position, the first-end upper power row 333 and the second-end upper power row 335 are separated from the battery sheet.

[0121] The first-end upper power row 333 and the second-end upper power row 335 implement upper power on the front side of the battery cell from both ends, thereby avoiding the laser scanning mechanism 35 and ensuring that the laser scanning mechanism 35 can implement laser scanning on the gate lines and / or light-receiving parts on the front side of the battery cell.

[0122] Optionally, the first upper power row 333 and the second upper power row 335 have the same structure. Taking the first upper power row 333 as an example, it includes a plurality of elastic pressure pin assemblies 334 arranged side by side. When the lifting drive mechanism drives the mounting bracket 332 to descend to a low position, each elastic pressure pin assembly 334 is elastically pressed against the grid line at the edge of the battery cell. Such an arrangement ensures the power-on effect on the front of the battery cell and prevents pressure damage to the battery cell.

[0123] Continue to refer Figure 4 As shown, optionally, the mounting bracket 332 includes a first mounting plate 3321, a second mounting plate 3322, a first mounting beam 3323 and a second mounting beam 3324, wherein:

[0124] The first mounting plate 3321 is provided with a first connecting hole extending in the vertical direction, and the second mounting plate 3322 is connected to the first mounting plate 3321 via the first connecting hole so as to be adjustably positioned up and down.

[0125] The second mounting plate 3322 is provided with a second connection hole and a third connection hole extending in the horizontal direction. The first mounting beam 3323 is connected to the second mounting plate 3322 in an adjustable horizontal position through the second connection hole, and the first end upper power bar 333 is installed on the first mounting beam 3323. The second mounting beam 3324 is connected to the second mounting plate 3322 in an adjustable horizontal position through the third connection hole, and the second end upper power bar 335 is installed on the second mounting beam 3324.

[0126] By adjusting the installation position of the second mounting plate 3322 on the first mounting plate 3321, the installation height of the first-end upper power bar 333 and the second-end upper power bar 335 can be adjusted. Ensure that when the lifting drive mechanism drives the mounting bracket 332 to a low position, the first-end upper power bar 333 and the second-end upper power bar 335 can be crimped on the front of the battery cell with a suitable force. By adjusting the installation position of the first mounting beam 3323 and the second mounting beam 3324 on the second mounting plate 3322, the spacing between the first mounting beam 3323 and the second mounting beam 3324 can be adjusted, thereby achieving compatibility with battery cells of different sizes.

[0127] As mentioned in the above embodiments, when the conveyor line includes a first branch conveyor line 311 and a second branch conveyor line 312 , the loading and transporting mechanism 2 needs to load the battery cells on the loading and transporting part 1 onto the first branch conveyor line 311 and the second branch conveyor line 312 .

[0128] like Figure 2As shown, optionally, the loading and handling mechanism 2 includes a loading rotation drive unit 21, a first loading swing arm 22 and a second loading swing arm 23, wherein: the first loading swing arm 22 and the second loading swing arm 23 are both connected to the loading rotation drive unit 21, and the loading rotation drive unit 21 is used to drive the first loading swing arm 22 and the second loading swing arm 23 to rotate synchronously, so as to drive the first loading swing arm 22 and the second loading swing arm 23 to alternately pick up battery cells from the loading conveying unit 1, and place the picked up battery cells on the first branch conveyor line 311 and the second branch conveyor line 312 respectively.

[0129] In particular, when the picking end of the first loading swing arm 22 rotates to above the loading conveyor part 1, the second loading swing arm 23 rotates to above the second branch conveyor line 312. In this way, when the picking end of the first loading swing arm 22 picks up the battery cell from the loading conveyor part 1, the second loading swing arm 23 simultaneously places another battery cell picked up previously onto the second branch conveyor line 312.

[0130] When the picking end of the second loading swing arm 23 rotates to the top of the loading conveyor part 1, the first loading swing arm 22 rotates to the top of the first branch conveyor line. In this way, when the picking end of the second loading swing arm 23 picks up the battery cell from the loading conveyor part 1, the first loading swing arm 22 simultaneously places the other battery cell picked up earlier onto the first branch conveyor line 311.

[0131] By configuring the loading and conveying mechanism 2 , the loading and conveying mechanism 2 can continuously and alternately convey the battery cells on the loading and conveying part 1 to the first branch conveying line 311 and the second branch conveying line 312 , thereby improving the loading efficiency.

[0132] Optionally, the pick-up ends of the first loading swing arm 22 and the second loading swing arm 23 are both provided with vacuum suction cups for sucking up the battery cells, and the suction cups may be Bernoulli suction cups or ordinary suction cups.

[0133] like Figure 8 As shown, optionally, the unloading and handling mechanism 4 includes a unloading rotary drive unit 41, a first unloading swing arm 42 and a second unloading swing arm 43, wherein: the first unloading swing arm 42 and the second unloading swing arm 43 are both connected to the unloading rotary drive unit 41, and the unloading rotary drive unit 41 is used to drive the first unloading swing arm 42 and the second unloading swing arm 43 to rotate synchronously, so as to drive the first unloading swing arm 42 and the second unloading swing arm 43 to alternately pick up battery cells from the first branch conveyor line 311 and the second branch conveyor line 312, and place the picked up battery cells on the unloading conveying unit 5.

[0134] In particular, when the picking end of the first unloading swing arm 42 rotates to above the first branch conveyor line 311, the second unloading swing arm 43 rotates to above the unloading conveyor part 5. In this way, when the first unloading swing arm 42 picks up a processed battery cell from the first branch conveyor line 311, the second unloading swing arm 43 simultaneously places another processed battery cell picked up earlier onto the unloading conveyor part 5.

[0135] When the picking end of the second unloading swing arm 43 rotates to above the second branch conveyor line 312, the first unloading swing arm 42 rotates to above the unloading conveyor part 5. In this way, when the second unloading swing arm 43 picks up a processed battery cell from the second branch conveyor line 312, the second unloading swing arm 43 simultaneously places another processed battery cell picked up earlier onto the unloading conveyor part 5.

[0136] By setting up the unloading and conveying mechanism 4, the unloading and conveying mechanism 4 can alternately convey the processed battery cells on the first branch conveyor line 311 and the second branch conveyor line 312 to the unloading and conveying part 5, thereby improving the unloading efficiency.

[0137] Alternatively, the first unloading swing arm 42 and the second unloading swing arm 43 are both provided with vacuum suction cups for sucking up the battery cells, and ordinary suction cups and Bernoulli suction cups may also be used.

[0138] Continue to refer Figure 8 As shown, optionally, the laser processing equipment in the embodiment of the present application also includes a second NG sheet rejecting mechanism 6 arranged on the side of the unloading and conveying part 5, and the second NG sheet rejecting mechanism 6 is used to reject unqualified battery cells from the unloading and conveying part to prevent unqualified battery cells from flowing into the subsequent process.

[0139] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A laser processing device, characterized in that: The laser processing equipment includes a loading and conveying part, a loading and conveying mechanism, a laser processing part, a unloading and conveying mechanism and an unloading and conveying part, wherein: The loading and conveying part is used to input the battery cells to be processed; The loading and transporting mechanism is used to pick up the battery cell from the loading and transporting part, and transport the picked-up battery cell to the laser processing part; The laser processing unit is used to implement laser enhanced contact optimization processing on the battery cell; The material unloading and conveying mechanism is used to pick up the battery cells that have completed the laser enhanced contact optimization treatment from the laser processing part, and to convey the picked-up battery cells to the material unloading and conveying part; The unloading conveying part is used to convey the battery cells to the subsequent workstations.

2. The laser processing device according to claim 1, characterized in that: The feeding and conveying part includes a feeding and conveying line, a PL detection mechanism and a first NG sheet rejection mechanism, wherein: The loading conveyor line is used to convey the battery cells to be processed, and at least a PL detection station and an NG sheet rejection station are provided on the conveying path of the loading conveyor line; The PL detection mechanism is arranged at the PL detection station, and is used to perform PL detection on the battery cell transported to the PL detection station; The first NG sheet rejection mechanism is arranged at the NG sheet rejection station, and is used to reject unqualified battery sheets from the feeding conveyor line; The loading and transporting mechanism is used to pick up the battery cells that have passed the inspection from the loading and transporting line, and to transport the picked-up battery cells that have passed the inspection to the laser processing unit.

3. The laser processing device according to claim 1, characterized in that: The laser processing unit includes a conveyor line, a lifting and conveying mechanism, a front power-on mechanism, a camera and a laser scanning mechanism, wherein: The loading and conveying mechanism conveys the battery cells picked up from the loading and conveying part to the conveying line; The conveyor line is used to convey the battery cells, and a positioning station, a lifting station and a laser processing station are sequentially arranged on the conveying path of the conveyor line; The camera is arranged above the positioning station, and is used to position the grid lines on the front side of the battery cell located at the positioning station; The lifting and conveying mechanism is configured to lift the battery cell from the lifting station of the conveying line, and convey the lifted battery cell to the laser processing station; The front power-on mechanism and the laser scanning mechanism are arranged above the laser processing station, wherein the front power-on mechanism is configured to power on the front of the battery cell, and the lifting and conveying mechanism is also configured to power on the back of the battery cell; the laser scanning mechanism is configured to perform laser scanning on the front of the battery cell based on the information on the front of the battery cell acquired by the camera, wherein the information on the front of the battery cell includes the position information of the grid line on the front of the battery cell and / or the position information of the light-receiving part on the front of the battery cell; The lifting and conveying mechanism is also configured to place the battery cells that have completed the laser enhanced contact optimization process back onto the conveying line.

4. The laser processing device according to claim 3, characterized in that: The conveyor line comprises a first branch conveyor line and a second branch conveyor line arranged side by side; The loading and conveying mechanism continuously picks up two battery cells from the loading and conveying part, and conveys the picked-up two battery cells to the first branch conveying line and the second branch conveying line respectively; The first branch conveyor line and the second branch conveyor line synchronously convey two battery cells; The lifting and conveying mechanism lifts two battery cells from the first branch conveying line and the second branch conveying line, and synchronously conveys the two lifted battery cells to the laser processing station; The lifting and conveying mechanism puts the two battery cells that have completed the laser enhanced contact optimization process back to the first branch conveying line and the second branch conveying line respectively.

5. The laser processing device according to claim 4, characterized in that: The lifting and conveying mechanism includes a middle lifting and conveying part and a side lifting and conveying part arranged on the side of the middle lifting and conveying part. The middle lifting and conveying part and the side lifting and conveying part are configured to alternately lift two batteries from the first branch conveying line and the second branch conveying line, and alternately convey the two lifted battery cells to the laser processing station.

6. The laser processing device according to claim 5, characterized in that: The intermediate lifting and conveying part includes an intermediate translation module, an intermediate lifting module, a first bearing platform and a second bearing platform, wherein: The intermediate lifting module is connected to the movable part of the intermediate translation module, and the first bearing platform and the second bearing platform are connected side by side to the movable part of the intermediate lifting module; The intermediate lifting module is used to drive the first load platform to lift one of the two battery cells from the first branch conveyor line, and drive the second load platform to lift the other of the two battery cells from the second branch conveyor line; The intermediate translation module is used to drive the first carrier platform and the second carrier platform to translate, so as to synchronously transport two battery cells to the laser processing station.

7. The laser processing device according to claim 5, characterized in that: The side lifting and conveying part comprises a first side lifting and conveying part arranged on the first side of the intermediate translation module, and a second side lifting and conveying part arranged on the second side of the intermediate translation module, wherein: The first side lifting and conveying part includes a first side translation module, a first side lifting module and a third bearing platform, wherein the first side lifting module is connected to the movable part of the first side translation module, the third bearing platform is connected to the movable part of the first side lifting module, the first side lifting module is used to drive the third bearing platform to lift one of the two battery cells from the first branch conveyor line, and the first side translation module is used to drive the third bearing platform to translate, so as to convey the battery cell lifted by the third bearing platform to the laser processing station; The second side lifting and conveying part includes a second side translation module, a second side lifting module and a fourth supporting platform, wherein the second side lifting module is connected to the movable part of the second side translation module, and the fourth supporting platform is connected to the movable part of the second side lifting module. The second side lifting module is used to drive the fourth supporting platform to lift the other of the two battery cells from the second branch conveyor line, and the second side translation module is used to drive the fourth supporting platform to translate, so as to convey the battery cell lifted by the fourth supporting platform to the laser processing station.

8. The laser processing device according to claim 7, characterized in that: The first carrier platform, the second carrier platform, the third carrier platform and the fourth carrier platform have the same structure, and the first carrier platform includes a substrate, an adsorption plate and an electrical carrier sheet, wherein: The adsorption plate is arranged on the substrate, and a negative pressure air cavity is arranged in the adsorption plate; The upper electrical carrier sheet is arranged on the adsorption plate, and an adsorption hole communicating with the negative pressure air cavity is arranged on the upper electrical carrier sheet; The power-on carrier sheet is used to carry the battery sheet and to power the electrodes on the back side of the battery sheet; The adsorption plate adsorbs and fixes the battery sheet on the upper electrical carrier sheet through the negative pressure air cavity and the adsorption holes.

9. The laser processing device according to claim 4, characterized in that: The front power-on mechanism is arranged in two groups side by side, and each group of the front power-on mechanism respectively powers on the front side of one of the two battery cells located at the laser processing station; The laser scanning mechanisms are arranged in two groups side by side, and each group of the laser scanning mechanisms performs laser scanning on one of the two battery cells located at the laser processing station.

10. The laser processing device according to claim 9, characterized in that: Each group of the front power-on mechanisms includes a lifting drive mechanism, a mounting bracket, a first-end power-on row and a second-end power-on row, wherein: The mounting bracket is connected to the movable part of the lifting drive mechanism, and the lifting drive mechanism is used to drive the mounting bracket to rise and fall; The first end upper power bar and the second end upper power bar are arranged side by side on the mounting bracket; When the lifting drive mechanism drives the mounting bracket to descend to a low position, the first-end power-on bus bar and the second-end power-on bus bar are respectively in contact with two ends of the front side of the battery cell to power on the front side of the battery cell.

11. The laser processing device according to claim 10, characterized in that: The first upper power row has the same structure as the second upper power row, and the first upper power row includes a plurality of elastic pressure pin assemblies arranged side by side; When the lifting drive mechanism drives the mounting bracket to descend to a low position, each of the elastic pressure pin assemblies is elastically pressed against the grid line at the edge of the battery cell.

12. The laser processing device according to claim 4, characterized in that: The loading and transporting mechanism comprises a loading rotation driving part, a first loading swing arm and a second loading swing arm, wherein: The first loading swing arm and the second loading swing arm are both connected to the loading rotation driving part, and the loading rotation driving part is used to drive the first loading swing arm and the second loading swing arm to rotate synchronously, so as to drive the first loading swing arm and the second loading swing arm to alternately pick up battery cells from the loading conveying part, and place the picked-up battery cells on the first branch conveying line and the second branch conveying line respectively; When the picking end of the first loading swing arm rotates to above the loading conveying part, the second loading swing arm rotates to above the second branch conveyor line; when the picking end of the second loading swing arm rotates to above the loading conveying part, the first loading swing arm rotates to above the first branch conveyor line.

13. The laser processing device according to claim 4, characterized in that: The material unloading and handling mechanism comprises a material unloading rotary driving unit, a first material unloading swing arm and a second material unloading swing arm, wherein: The first unloading swing arm and the second unloading swing arm are both connected to the unloading rotary drive unit, and the unloading rotary drive unit is used to drive the first unloading swing arm and the second unloading swing arm to rotate synchronously, so as to drive the first unloading swing arm and the second unloading swing arm to alternately pick up battery cells from the first branch conveyor line and the second branch conveyor line, and place the picked up battery cells on the unloading conveyor unit; When the picking end of the first unloading swing arm rotates to above the first branch conveyor line, the second loading swing arm rotates to above the unloading conveying part; when the picking end of the second loading swing arm rotates to above the second branch conveyor line, the first unloading swing arm rotates to above the unloading conveying part.

14. The laser processing device according to claim 1, characterized in that: The laser processing equipment also includes a second NG sheet rejecting mechanism arranged at the side of the unloading and conveying part, and the second NG sheet rejecting mechanism is used to reject unqualified battery sheets from the unloading and conveying part.

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