Square battery cell OCV testing, sorting and labeling all-in-one machine

Abstract

The utility model discloses a square battery cell OCV testing, sorting and labeling all-in-one machine which comprises a transmission line body, a code scanning mechanism, an OCV testing mechanism, an NG blanking mechanism and a labeling mechanism, and the transmission line body comprises a conveyor belt which is driven by a control motor and carries a battery cell as a workpiece; the transmission line body comprises a code scanning station, an OCV station, an NG blanking station and a labeling station; the code scanning mechanism is arranged on the side face of the code scanning station and comprises a code reader. The OCV testing mechanism is arranged on the side face of the OCV station and comprises a battery tester, a set of probes and a sliding table air cylinder, and the battery tester and the code reader are connected with the controller. The probe is installed on a piston rod of the first sliding table air cylinder and faces a workpiece on the OCV station. The NG discharging mechanism is arranged on the side face of the NG discharging station and comprises an NG discharging mechanical arm and an NG discharging conveying belt. The labeling mechanism is arranged on the side face of the labeling station and comprises a labeling mechanical arm and a feeder. The equipment disclosed by the utility model is simple in structure and relatively high in cell processing efficiency.

Description

[Technical field]

[0001] The utility model relates to lithium-ion battery cell processing equipment, in particular to an integrated machine for OCV testing, sorting and labeling of square battery cells. [Background Technology]

[0002] New energy vehicles are the future of automotive development. As the power source of these vehicles, strict quality control of lithium-ion batteries is crucial to their gradual replacement of fuel-powered vehicles. During the lithium-ion battery production process, various technical indicators are controlled using a variety of sophisticated testing equipment. OCV testing equipment is a key component of this testing, collecting and providing comprehensive data on finished battery cells. Deployed on the production line after the chemical and capacity processing steps, OCV testing measures the open-circuit voltage, internal resistance, and insulation voltage between the negative electrode and the casing of the finished battery cells as indicators of performance. However, traditional OCV testing equipment for lithium-ion batteries has a low level of automation, requiring manual intervention and limited compatibility, being suitable only for specific cell models and quantities. OCV testing can determine parameters such as the K value, current, voltage, and capacity of prismatic lithium-ion batteries, enabling the separation of batteries with substandard electrochemical parameters and ensuring the quality of the finished battery. When testing lithium-ion batteries for OCV, the process includes loading and unloading, placing qualified products on lithium-ion battery trays, and collecting unqualified products. When the lithium-ion battery OCV test process is completed by manually operating the testing equipment, multiple people are required to operate the lithium-ion batteries separately. Each operation process cannot be completed continuously, resulting in poor stability during the battery testing process and low test efficiency. At the same time, it consumes a lot of manpower and high production costs. In addition, too many times of manual battery movement will increase the rate of unqualified lithium-ion batteries.

[0003] The invention with application number 202210816766.1 discloses an all-in-one machine for automatic OCV testing, cleaning, and gluing of square batteries, including a loading section and a processing section; the loading section consists of an L-shaped feeding conveyor belt and a six-axis robot arm, and is surrounded by fences to prevent the six-axis robot arm from accidentally injuring workers; the L-shaped feeding conveyor belt is used to transport material frames containing battery cells, with one end being the feeding end and the other end being the discharging end; the feeding end of the processing section is located on one side of the six-axis robot arm, making it convenient for the six-axis robot arm to grab the battery cells and place them into the processing section for processing. This invention improves testing efficiency by automating key production processes such as loading, OCV testing, code scanning, cleaning, and gluing.

[0004] However, this invention requires equipment, a conveyor belt, a six-axis robot, multiple placement tables and multiple transfer mechanisms. The equipment structure is complex, the procedures are cumbersome, and the battery cell processing efficiency is low. [Summary of the invention]

[0005] The technical problem to be solved by the utility model is to provide an all-in-one machine for OCV testing, sorting and labeling of square battery cells with high cell processing efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is an all-in-one machine for OCV testing, sorting and labeling of square battery cells, including a frame, a transmission line body, a code scanning mechanism, an OCV testing mechanism, an NG unloading mechanism, a labeling mechanism and a control system. The control system includes a controller, the transmission line body is arranged along the X-axis direction, and along the length direction of the transmission line body, a conveyor belt driven by a control motor and carrying battery cells as workpieces is included; the transmission line body includes a plurality of stations along the X-axis direction, from the feed end to the discharge end, and the stations include a code scanning station, an OCV station, an NG unloading station and a labeling station in sequence; the code scanning mechanism is arranged at the scanning station The side of the coding station along the Y-axis direction includes a code reader; the OCV testing mechanism is arranged on the side of the OCV station along the Y-axis direction, including a battery tester, a set of probes and a first slide cylinder, the probes are electrically connected to the battery tester, and the battery tester and the code reader are respectively connected to the controller; the first slide cylinder is arranged along the Y-axis direction, and the probe is installed on the piston rod of the first slide cylinder, facing the workpiece on the OCV station; the NG unloading mechanism is arranged on the side of the NG unloading station along the Y-axis direction, including an NG unloading robot and an NG unloading conveyor belt; the labeling mechanism is arranged on the side of the labeling station along the Y-axis direction, including a labeling robot and a feeder.

[0007] The all-in-one machine described above has a frame including a line body bracket and a machine table, an OCV testing mechanism, an NG unloading mechanism and a labeling mechanism installed on the table top of the machine table, and the transmission line body is fixed on the top of the line body bracket, located above the table top of the machine table; the conveyor belt includes a plurality of carrying slots for battery cells, and the carrying slots for the plurality of battery cells are evenly distributed along the periphery of the conveyor belt; the conveyor belt is a stepping conveyor belt driven by a servo motor, and the step length of the stepping conveyor belt is the spacing between adjacent carrying slots, and the spacing between the workstations is equal to the step length of the stepping conveyor belt, or an integer multiple of the step length; the transmission line body includes a corresponding to the workstation, and the transmitting end and the receiving end of the opposing photoelectric sensor are respectively installed on both sides of the conveyor belt corresponding to the workstation of the transmission line body along the Y-axis direction, and the signal output end of the opposing photoelectric sensor is connected to the controller.

[0008] In the all-in-one machine described above, the code scanning mechanism includes a code reader bracket, and the OCV testing mechanism includes a first slide cylinder bracket and a probe mounting plate. The first slide cylinder is fixed above the table through the first slide cylinder bracket, and the probe is installed on the piston rod of the first slide cylinder through the probe mounting plate; the code reader is fixed above the table through the code reader bracket, facing the workpiece on the code scanning station.

[0009] The all-in-one machine described above, the NG unloading robot includes a first linear module, a first multi-rod cylinder and a first clamping cylinder. The first linear module is arranged along the Y-axis direction and is fixed above the transmission line body through the NG unloading bracket; the first multi-rod cylinder is arranged vertically, and the cylinder body of the first multi-rod cylinder is fixed on the slider of the first linear module; the cylinder body of the first clamping cylinder is fixed on the lower end of the piston rod of the first multi-rod cylinder, and the downward clamping jaw of the first clamping jaw cylinder is equipped with a clamping plate for clamping the workpiece, and the downward clamping jaw of the first clamping jaw cylinder opens and closes along the X-axis direction; the NG unloading conveyor belt is arranged along the Y-axis direction and is fixed on the table through the NG unloading conveyor belt bracket, and is located below the first clamping jaw cylinder.

[0010] The all-in-one machine described above, the labeling robot includes a second linear module, a third linear module, a fourth linear module and an elastic suction cup. The second linear module is arranged along the Y-axis direction and is fixed above the transmission line body through the second linear module bracket; the third linear module is arranged along the X-axis direction and is fixed on the slider of the second linear module; the fourth linear module is arranged vertically and fixed on the slider of the third linear module; the upper part of the elastic suction cup is fixed on the slider of the fourth linear module, the feeder is fixed on the table of the machine, and the paper picking platform of the feeder is located below the elastic suction cup, and the two are located on the same vertical plane of the Y-axis.

[0011] The above-mentioned all-in-one machine, the elastic suction cup includes a connecting plate, a first linear guide pair, an L-shaped cylinder fixing plate, a baffle, a limit block, a plurality of compression springs, a first rotary cylinder and a suction cup. The back of the connecting plate is fixed to the slider of the fourth linear module; the guide rail of the first linear guide pair is vertically fixed to the front of the connecting plate, and the vertical plate of the L-shaped cylinder fixing plate is fixed to the slider of the first linear guide pair; the cylinder body of the first rotary cylinder is fixed to the bottom surface of the horizontal plate of the L-shaped cylinder fixing plate, and the rotation axis is vertically arranged. The suction cup is fixed to the rotating shaft of the first rotating cylinder through the suction cup connecting plate, and the air inlet and exhaust ports of the suction cup are connected to the air source controlled by the controller; the baffle is fixed to the front side of the connecting plate, and is located above the vertical plate of the L-shaped cylinder fixing plate, and a plurality of compression springs are arranged between the bottom surface of the baffle and the top surface of the vertical plate of the cylinder fixing plate; the vertical plate of the L-shaped cylinder fixing plate includes a limit groove, and the limit block is fixed to the front side of the connecting plate, and is located in the limit groove. Under the thrust of the compression spring, the upper edge of the limit groove abuts against the top surface of the limit block.

[0012] The all-in-one machine described above includes a flipping mechanism, and the workstation includes a flipping station, which is arranged between the NG blanking station and the labeling station, and the flipping mechanism is arranged on the side of the flipping station along the Y-axis direction; the flipping mechanism includes a flipping support, a cylinder, a second linear guide pair, a second rotary cylinder and a second clamping cylinder, the guide rail of the second linear guide pair is vertically fixed on the vertical plate of the flipping support, the cylinder body of the second rotary cylinder is fixed on the slider of the second linear guide pair, and the rotation axis of the second rotary cylinder is arranged along the Y-axis direction; the cylinder body of the cylinder is vertically fixed on the top of the flipping support, and the lower end of the cylinder piston rod is connected to the cylinder body of the second rotary cylinder; the cylinder body of the second clamping cylinder is fixed on the rotating axis of the second rotary cylinder, the clamping jaws of the second clamping cylinder face the workpiece on the flipping station, the clamping jaws of the second clamping cylinder are equipped with a flip clamping plate, and the clamping jaws of the second clamping cylinder open and close along the X-axis direction.

[0013] The all-in-one machine described above includes a gluing mechanism, and the workstations include a gluing station, which is arranged between the flipping station and the labeling station, and the gluing mechanism is arranged on the side of the gluing station along the Y-axis direction; the gluing mechanism includes a fifth linear module, a sixth linear module, a seventh linear module and a gluing device, the fifth linear module is arranged along the Y-axis direction and is fixed above the transmission line body through the fifth linear module bracket; the sixth linear module is arranged along the X-axis direction and is fixed on the slider of the fifth linear module; the seventh linear module is arranged vertically and fixed on the slider of the sixth linear module; the gluing device is fixed on the slider of the seventh linear module.

[0014] The all-in-one machine described above, the gluing device includes a mounting bracket, a synchronous belt device driven by a servo motor, a screw nut pair, a third linear guide pair, a nut fixing seat, two push rods and an AB glue dispensing device, and the AB glue dispensing device includes two glue syringes, a glue mixer and a glue dispensing head; the back of the mounting bracket is fixed on the slider of the seventh linear module; the synchronous belt device is installed on the top of the mounting bracket, and the front of the mounting bracket includes a support seat, a glue cylinder fixing seat, a glue cylinder support seat and a glue head fixing seat; the support seat is arranged in the middle of the mounting bracket, and the two glue syringes are arranged side by side below the support seat, the bottom of the barrel of the two glue syringes is supported by the glue cylinder support seat, and the upper part of the barrel of the two glue syringes is fixed by the glue cylinder fixing seat ; The outlets at the bottom of the two glue syringe barrels are connected to the glue mixer, and the glue head is connected to the outlet at the lower end of the glue mixer; the glue head fixing seat is located at the lower end of the mounting bracket, and the vertically arranged glue head is fixed by the glue head fixing seat; the upper end of the screw of the screw nut pair is driven and positioned by the synchronous belt device, and the lower end of the screw is supported by the support seat; the guide rail of the third linear guide pair is vertically fixed on the front side of the upper part of the mounting bracket, and the nut of the screw nut pair is installed in the nut fixing seat, and the nut fixing seat is fixed on the slider of the third linear guide pair; two sliding sleeves corresponding to the two push rods are installed on the support seat, the upper ends of the two push rods are fixed on the nut fixing seat, and the lower ends of the two push rods pass through the corresponding sliding sleeves respectively, and are pressed against the top of the two glue syringe pistons.

[0015] The all-in-one machine described above, the transmission line body includes two sets of battery cell positioning assemblies, and the two sets of battery cell positioning assemblies are respectively arranged at the labeling station and the gluing station; the battery cell positioning assembly includes two positioning devices, the positioning device includes a second multi-rod cylinder and a positioning block, the positioning block is fixed to the front end of the piston rod of the second multi-rod cylinder, and the front end of the positioning block includes a 90° angular positioning groove; the two positioning devices of the battery cell positioning assembly are respectively arranged on both sides of the conveyor belt of the corresponding station, and are respectively located on the extension lines of the two ends of a diagonal line of the workpiece on the corresponding station, and the angular positioning grooves at the front ends of the positioning blocks of the two positioning devices are opposite.

[0016] The utility model does not need to set up multiple placement tables and multiple transfer mechanisms, the equipment structure is simple, and the battery cell processing efficiency is high. [Brief Description of the Drawings]

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 It is a front view of the all-in-one machine according to an embodiment of the present utility model.

[0019] Figure 2 It is a top view of the all-in-one machine according to an embodiment of the present utility model.

[0020] Figure 3It is a rear view of the all-in-one machine according to an embodiment of the present utility model.

[0021] Figure 4 It is a right side view of the all-in-one machine according to an embodiment of the present utility model.

[0022] Figure 5 It is a left view of the all-in-one machine according to an embodiment of the present utility model.

[0023] Figure 6 It is a three-dimensional diagram of the all-in-one machine according to an embodiment of the present utility model.

[0024] Figure 7 It is a three-dimensional diagram of the transmission line body of the embodiment of the present utility model.

[0025] Figure 8 It is a three-dimensional diagram of the OCV testing mechanism and the code scanning mechanism of the embodiment of the utility model.

[0026] Figure 9 It is a three-dimensional diagram of the first slide cylinder and probe of the OCV test mechanism of the embodiment of the present utility model.

[0027] Figure 10 It is a three-dimensional diagram of the NG blanking mechanism of the embodiment of the present utility model.

[0028] Figure 11 It is a three-dimensional diagram of the flip mechanism of the embodiment of the utility model.

[0029] Figure 12 It is a three-dimensional diagram of the labeling mechanism of the embodiment of the present utility model.

[0030] Figure 13 It is a three-dimensional diagram of the three-axis mechanism of the labeling robot according to the embodiment of the present invention.

[0031] Figure 14 It is a three-dimensional diagram of the elastic suction cup of the labeling robot according to the embodiment of the present invention.

[0032] Figure 15 It is a three-dimensional diagram of the gluing device according to an embodiment of the present utility model.

[0033] Figure 16 It is a three-dimensional diagram of the gluing mechanism of the embodiment of the utility model.

[0034] Figure 17 It is a front view of the gluing mechanism of an embodiment of the present utility model.

[0035] Figure 18 It is a top view of the battery cell positioning assembly according to an embodiment of the present utility model. [Specific implementation method]

[0036] The utility model embodiment of the square battery cell OCV test, sorting, labeling all-in-one machine is as follows Figures 1 to 18As shown, it includes a frame 10, a transmission line body 20, a code scanning mechanism 80, an OCV testing mechanism 30, an NG unloading mechanism 40, a flipping mechanism 50, a gluing mechanism 60, a labeling mechanism 70 and a control system, and the control system includes a controller.

[0037] The frame 10 includes a line support 11 and a machine platform 12, both mounted on the floor. The OCV test mechanism 30, NG unloading mechanism 40, flipping mechanism 50, gluing mechanism 60, and labeling mechanism 70 are mounted on the tabletop 121 of the machine platform 12. The transmission line 20 is fixed to the top of the line support 11, above the tabletop 121 of the machine platform 12.

[0038] The transmission line 20 is arranged along the X-axis. Along the length of the transmission line 20, a stepping conveyor 21 driven by a servo motor and carrying the battery cells as the workpiece 01 is included. The transmission line 20 includes multiple stations along the X-axis. From the feed end 20A to the discharge end 20B, the transmission line 20 includes a code scanning station 29, an OCV station 24, an NG unloading station 25, a flipping station 26, a gluing station 27, and a labeling station 28.

[0039] The step conveyor 21 includes multiple slots 211 for holding battery cells. The slots 211 are evenly spaced along the periphery of the step conveyor 21. The step length P of the step conveyor 21 is the distance between adjacent slots 211. The spacing between workstations is also equal to the step length P of the step conveyor 21, or an integer multiple of the step length P.

[0040] The transmission line body 20 includes a through-beam photoelectric sensor 22 corresponding to the work station. The transmitting end and the receiving end of the through-beam photoelectric sensor 22 are respectively installed on both sides of the stepping conveyor belt 21 corresponding to the work station of the transmission line body 20 along the Y-axis direction. The signal output end of the through-beam photoelectric sensor 22 is connected to the controller.

[0041] The transmission line body 20 includes two sets of battery cell positioning assemblies, which are respectively arranged at the labeling station 28 and the gluing station 27. The battery cell positioning assembly includes two positioning devices 23, which include a second multi-rod cylinder 231 and a positioning block 232. The positioning block 232 is fixed to the front end of the piston rod of the second multi-rod cylinder 231, and the front end of the positioning block 232 includes a 90° angular positioning groove 233. The two positioning devices 23 of the battery cell positioning assembly are respectively arranged on both sides of the stepping conveyor 21 of the corresponding workstation and are respectively located on the extension lines of the two ends of a diagonal line of the workpiece 01 at the corresponding workstation. The second multi-rod cylinder 231 is fixed to the transmission line body 20 via a mounting plate 234, and the angular positioning grooves 233 at the front ends of the positioning blocks 232 of the two positioning devices 23 face each other.

[0042] The code scanning mechanism 80 is arranged on one side of the code scanning station 29 along the Y-axis direction, and includes a code reader 81 and a code reader bracket 82. The code reader 81 is fixed above the table 121 through the code reader bracket 82, facing the workpiece 01 on the code scanning station 29.

[0043] The OCV testing mechanism 30 is arranged on one side of the OCV station 24 along the Y-axis direction, and includes a battery tester 31, a set of probes 32, a first slide cylinder 33, a battery tester bracket 35, a first slide cylinder bracket 36 and a probe mounting plate 38. The probe 32 is electrically connected to the battery tester 31, and the battery tester 31 and the code reader 81 are respectively connected to the controller. The first slide cylinder 33 is arranged along the Y-axis direction and is fixed above the table 121 through the first slide cylinder bracket 36. The probe 32 is mounted on the piston rod of the first slide cylinder 33 through the probe mounting plate 38, facing the workpiece 01 on the OCV station 24. The battery tester 31 is fixed above the table 121 through the battery tester bracket 35.

[0044] The NG unloading mechanism 40 is arranged on one side of the NG unloading station 25 along the Y-axis direction, and includes an NG unloading robot 40A and an NG unloading conveyor belt 41 .

[0045] The NG unloading robot 40A includes a first linear module 42, a first multi-axis cylinder 43, and a first gripper cylinder 44, all driven by a servo motor. The first linear module 42 is arranged along the Y-axis and fixed to the table 121 via an NG unloading bracket 45, located above the conveyor 20. The first multi-axis cylinder 43 is arranged vertically, with its cylinder body fixed to the slider of the first linear module 42. The cylinder body of the first gripper cylinder 44 is fixed to the lower end of the piston rod of the first multi-axis cylinder 43. The downward-facing jaws 441 of the first gripper cylinder 44 are equipped with a clamping plate 442 for clamping the workpiece 01. The downward-facing jaws 441 and clamping plate 442 of the first gripper cylinder 44 open and close along the X-axis. The NG unloading conveyor 41 is arranged along the Y-axis and fixed to the table 121 via an NG unloading conveyor bracket 46, located below the first gripper cylinder 44.

[0046] The flipping mechanism 50 is located on one side of the flipping station 26 along the Y-axis. It comprises a flipping support 51, a cylinder 52, two sets of second linear guides 53, a second rotary cylinder 54, and a second gripper cylinder 55. The guide rails of the second linear guides 53 are vertically fixed to the vertical plate of the flipping support 51. The cylinder body of the second rotary cylinder 54 is fixed to the slider of the second linear guide 53, with the rotation axis of the second rotary cylinder 54 arranged along the Y-axis. The cylinder body of the cylinder 52 is vertically fixed to the top of the flipping support 51, and the lower end of the piston rod of the cylinder 52 is connected to the cylinder body of the second rotary cylinder 54. The cylinder body of the second clamping cylinder 55 is fixed on the rotating axis of the second rotating cylinder 54, the clamping jaws of the second clamping cylinder 55 are facing the workpiece 01 on the flipping station 26, and the clamping jaws of the second clamping cylinder 55 are equipped with a flipping clamping plate 56. The clamping jaws of the second clamping cylinder 55 and the flipping clamping plate 56 open and close along the X-axis direction.

[0047] The gluing station 27 is arranged between the flipping station 26 and the labeling station 28, and the gluing mechanism 60 is arranged on one side of the gluing station 27 along the Y-axis direction. The gluing mechanism 60 includes a three-axis mechanism and a gluing device 60A. The three-axis mechanism of the gluing mechanism 60 includes a fifth linear module 61, a sixth linear module 62, and a seventh linear module 63. The fifth linear module 61 is arranged along the Y-axis direction and is fixed to the table 121 through the fifth linear module bracket 611, and is located above the transmission line body 20. The sixth linear module 62 is arranged along the X-axis direction and is fixed on the slider of the fifth linear module 61. The seventh linear module 63 is arranged vertically and fixed on the slider of the sixth linear module 62. The gluing device 60A is fixed on the slider of the seventh linear module 63.

[0048] The glue coating device 60A includes a mounting bracket 64, a synchronous belt assembly 65 driven by a servo motor, a screw-nut assembly 66, a third linear guide assembly 67, a nut holder 661, two push rods 68, and an AB glue dispensing device 69. The AB glue dispensing device 69 includes two glue injectors 691, a glue mixer 692, and a glue dispensing head 693. The back of the mounting bracket 64 is fixed to the slider of the seventh linear module 63. The synchronous belt assembly 65 is mounted on the top of the mounting bracket 64. The front of the mounting bracket 64 includes a support base 641, a glue cartridge holder 642, a glue cartridge support base 643, and a glue head holder 644. The support base 641 is located in the middle of the mounting bracket 64. Two glue injectors 691 are arranged side by side below the support base 641. The bottoms of the two glue injectors 691 are supported by the glue cartridge support base 643, and the tops of the two glue injectors 691 are fixed by the glue cartridge holder 642. The outlets at the bottom of the cylinders of the two glue injectors 691 are connected to the glue mixer 692, and the glue head 693 is connected to the outlet at the lower end of the glue mixer 692. The glue head fixing seat 644 is located at the lower end of the mounting bracket 64, and the vertically arranged glue head 693 is fixed by the glue head fixing seat 644. The upper end of the screw of the screw-nut pair 66 is driven and positioned by the synchronous belt device 65, and the lower end of the screw is supported by the support seat 641. The guide rail of the third linear guide pair 67 is vertically fixed to the front of the upper part of the mounting bracket 64, and the nut of the screw-nut pair 66 is installed in the nut fixing seat 661, and the nut fixing seat 661 is fixed to the slider of the third linear guide pair 67. Two sliding sleeves 681 corresponding to the two push rods 68 are installed on the support seat 641. The upper ends of the two push rods 68 are fixed on the nut fixing seat 661. The lower ends of the two push rods 68 pass through the corresponding sliding sleeves 681 and press against the top of the pistons of the two glue syringes 691.

[0049] The labeling mechanism 70 is arranged on one side of the labeling station 28 along the Y-axis direction, and includes a labeling robot 70A and a flyer 71. The labeling robot 70A includes a three-axis mechanism and an elastic suction cup 70B. The three-axis mechanism includes a second linear module 72, a third linear module 73, and a fourth linear module 74. The second linear module 72 is arranged along the Y-axis direction and is fixed to the table 121 through the second linear module bracket 721, and is located above the transmission line body 20. The third linear module 73 is arranged along the X-axis direction and is fixed to the slider of the second linear module 72. The fourth linear module 74 is arranged vertically and fixed to the slider of the third linear module 73. The upper part of the elastic suction cup 70B is fixed to the slider 741 of the fourth linear module 74. The flyer 71 is fixed to the table 121 of the machine 12. The paper picking platform 711 of the flyer 71 is located below the elastic suction cup 70B. Both are located on the same vertical plane of the Y-axis.

[0050] The elastic suction cup 70B includes a vertically arranged connecting plate 75, a first linear guide pair (not shown in the figure), an L-shaped cylinder fixing plate 77, a baffle 751, a limit block 752, two compression springs 753, a first rotary cylinder 78 and a suction cup 79. The back of the connecting plate 75 is fixed to the slider 741 of the fourth linear module 74. The guide rail of the first linear guide pair is vertically fixed to the front of the connecting plate 75, and the vertical plate 771 of the L-shaped cylinder fixing plate 77 is fixed to the slider of the first linear guide pair. The cylinder body of the first rotary cylinder 78 is fixed to the bottom surface of the horizontal plate 772 of the L-shaped cylinder fixing plate 77, and the rotation axis of the first rotary cylinder 78 is arranged vertically. The suction cup 79 is fixed to the rotation axis of the first rotary cylinder 78 through the suction cup connecting plate 76, and the air inlet and outlet of the suction cup 79 are connected to the air source controlled by the controller. A retaining bar 751 is fixed to the front of the connecting plate 75, located above the vertical plate 771 of the L-shaped cylinder fixing plate 77. Two compression springs 753 are arranged between the bottom surface of the retaining bar 751 and the top surface of the vertical plate 771 of the cylinder fixing plate 77. The vertical plate 771 of the L-shaped cylinder fixing plate 77 includes a retaining groove 773. The retaining block 752 is fixed to the front of the connecting plate 75 and located in the retaining groove 773. Under the thrust of the compression spring 753, the upper edge of the retaining groove 773 abuts the top surface of the retaining block 752.

[0051] The working process of the integrated machine for OCV testing, sorting, and labeling of square battery cells in the embodiment of the utility model includes the following steps:

[0052] 1) The servo motor of the line transmission body 20 drives the stepping conveyor 21 to move along the X-axis in a beat with a step length P; the loading robot places the battery cell as a workpiece into the carrying groove 211 of the stepping conveyor 21 at the feeding end 20A of the line transmission body 20;

[0053] 2) When the through-beam photoelectric sensor 22 on the code scanning station 29 senses that the workpiece 01 is in place, the code reader 81 of the code scanning mechanism 80 reads the code on the workpiece 01 and sends the code information of the workpiece 01 to the controller;

[0054] 3) When the through-beam photoelectric sensor 22 on the OCV station 24 senses that the workpiece 01 is in place, the first slide cylinder 33 of the OCV testing mechanism 30 pushes a set of probes 32 on the probe mounting plate 38 forward, and the probes 32 contact the electrodes on the battery cells on the OCV station 24; the battery tester 31 reads the relevant data of the tested battery cells and sends the battery cell data to the controller, which determines whether the tested battery cells are qualified and associates the battery cell status with the battery cell code;

[0055] 4) When the through-beam photoelectric sensor 22 on the NG unloading station 25 senses that the workpiece 01 is in place, the controller determines whether the workpiece 01 on the NG unloading station 25 is qualified. If the workpiece 01 on the NG unloading station 25 is qualified, the controller does not send an instruction to the NG unloading mechanism 40; if the workpiece 01 on the NG unloading station 25 is unqualified, the controller sends an instruction to the NG unloading mechanism 40, the NG unloading mechanism 40 is actuated, and the NG unloading robot 40A transfers the workpiece 01 on the NG unloading station 25 to the NG unloading conveyor belt 41 and transports it to the unqualified product position.

[0056] 5) When the through-beam photoelectric sensor 22 on the flipping station 26 senses that the workpiece 01 is in place, if the workpiece 01 on the flipping station 26 needs to be flipped, the controller sends a command to the flipping mechanism 50, and the flipping mechanism 50 clamps the workpiece 01 from the loading slot 211 of the stepping conveyor 21, flips it, and then puts it back to the original loading slot 211 of the stepping conveyor 21.

[0057] 6) When the through-beam photoelectric sensor 22 on the gluing station 27 senses that the workpiece 01 is in place, if the workpiece 01 on the gluing station 27 needs to be glued, the battery cell positioning assembly on the gluing station 27 clamps the workpiece 01, and the controller sends an instruction to the gluing mechanism 60. The three-axis mechanism of the gluing mechanism 60 moves the gluing device 60A to the top of the workpiece 01 for gluing. After the gluing is completed, the gluing mechanism 60 and the battery cell positioning assembly on the gluing station 27 are reset.

[0058] 7) When the through-beam photoelectric sensor 22 on the labeling station 28 senses that the workpiece 01 is in place, the battery cell positioning assembly on the labeling station 28 clamps the workpiece 01, and the controller sends an instruction to the gluing mechanism 60. The three-axis mechanism of the labeling robot 70A first moves the elastic suction cup 70B to the top of the flyer 71 to absorb the label output by the flyer. Then, the three-axis mechanism of the labeling robot 70A first moves the elastic suction cup 70B to the top of the workpiece 01 and sticks the absorbed label to the workpiece 01. After labeling is completed, the labeling robot 70A and the battery cell positioning assembly on the labeling station 28 are reset.

[0059] The all-in-one machine for OCV testing, sorting, and labeling of square battery cells in the above embodiment of the utility model does not require the installation of multiple placement tables and multiple transfer mechanisms, and the equipment structure is simple; except for unqualified products, the workpiece battery cells always follow the conveyor belt during the processing process, the control program is simple, the processing efficiency of the battery cells is high, the processing process is not prone to errors, and the unqualified rate is low.

Claims

1. An all-in-one machine for OCV testing, sorting, and labeling of square battery cells, comprising a frame, a transmission line, a code scanning mechanism, an OCV testing mechanism, an NG unloading mechanism, a labeling mechanism, and a control system. The control system comprises a controller, characterized in that: The transmission line body is arranged along the X-axis direction, and along the length direction of the transmission line body, it includes a conveyor belt driven by a control motor and carrying battery cells as workpieces; the transmission line body includes multiple stations along the X-axis direction, from the feed end to the discharge end, and the stations include a code scanning station, an OCV station, an NG unloading station and a labeling station in sequence; the code scanning mechanism is arranged on the side of the code scanning station along the Y-axis direction, including a code reader; the OCV testing mechanism is arranged on the side of the OCV station along the Y-axis direction, including a battery tester, a group of probes and a first slide cylinder, the probes are electrically connected to the battery tester, and the battery tester and the code reader are respectively connected to the controller; the first slide cylinder is arranged along the Y-axis direction, and the probe is installed on the piston rod of the first slide cylinder, facing the workpiece on the OCV station; the NG unloading mechanism is arranged on the side of the NG unloading station along the Y-axis direction, including an NG unloading robot and an NG unloading conveyor belt; the labeling mechanism is arranged on the side of the labeling station along the Y-axis direction, including a labeling robot and a feeder.

2. The all-in-one machine according to claim 1, characterized in that: The frame includes a line body bracket and a machine table. The OCV testing mechanism, NG unloading mechanism and labeling mechanism are installed on the table top of the machine table. The transmission line body is fixed on the top of the line body bracket and is located above the table top of the machine table. The conveyor belt includes a plurality of carrying slots for battery cells, and the carrying slots for the plurality of battery cells are evenly distributed along the periphery of the conveyor belt. The conveyor belt is a stepping conveyor belt driven by a servo motor. The step length of the stepping conveyor belt is the spacing between adjacent carrying slots. The spacing between the workstations is equal to the step length of the stepping conveyor belt, or an integer multiple of the step length. The transmission line body includes a through-beam photoelectric sensor corresponding to the workstation. The transmitting end and the receiving end of the through-beam photoelectric sensor are respectively installed on both sides of the conveyor belt corresponding to the workstation of the transmission line body along the Y-axis direction. The signal output end of the through-beam photoelectric sensor is connected to the controller.

3. The all-in-one machine according to claim 2, characterized in that: The code scanning mechanism includes a code reader bracket, and the OCV testing mechanism includes a first slide cylinder bracket and a probe mounting plate. The first slide cylinder is fixed above the table through the first slide cylinder bracket, and the probe is installed on the piston rod of the first slide cylinder through the probe mounting plate; the code reader is fixed above the table through the code reader bracket, facing the workpiece on the code scanning station.

4. The all-in-one machine according to claim 2, characterized in that: The NG unloading robot includes a first linear module, a first multi-rod cylinder and a first gripper cylinder. The first linear module is arranged along the Y-axis direction and is fixed above the transmission line body through the NG unloading bracket; the first multi-rod cylinder is arranged vertically, and the cylinder body of the first multi-rod cylinder is fixed on the slider of the first linear module; the cylinder body of the first gripper cylinder is fixed on the lower end of the piston rod of the first multi-rod cylinder, and the downward gripper of the first gripper cylinder is equipped with a clamping plate for clamping the workpiece, and the downward gripper of the first gripper cylinder opens and closes along the X-axis direction; the NG unloading conveyor belt is arranged along the Y-axis direction and is fixed on the table through the NG unloading conveyor belt bracket, and is located below the first gripper cylinder.

5. The all-in-one machine according to claim 2, characterized in that: The labeling robot includes a second linear module, a third linear module, a fourth linear module and an elastic suction cup. The second linear module is arranged along the Y-axis direction and is fixed above the transmission line body through the second linear module bracket; the third linear module is arranged along the X-axis direction and is fixed on the slider of the second linear module; the fourth linear module is arranged vertically and fixed on the slider of the third linear module; the upper part of the elastic suction cup is fixed on the slider of the fourth linear module, the feeder is fixed on the table of the machine, and the paper picking platform of the feeder is located below the elastic suction cup. The two are located on the same vertical plane of the Y-axis.

6. The all-in-one machine according to claim 5, characterized in that: The elastic suction cup includes a connecting plate, a first linear guide pair, an L-shaped cylinder fixing plate, a stop bar, a limit block, a plurality of compression springs, a first rotary cylinder and a suction cup. The back of the connecting plate is fixed to the slider of the fourth linear module; the guide rail of the first linear guide pair is vertically fixed to the front of the connecting plate, and the vertical plate of the L-shaped cylinder fixing plate is fixed to the slider of the first linear guide pair; the cylinder body of the first rotary cylinder is fixed to the bottom surface of the horizontal plate of the L-shaped cylinder fixing plate, and the rotation axis is arranged vertically; the suction cup is fixed to the bottom surface of the horizontal plate of the L-shaped cylinder fixing plate, and the rotation axis is arranged vertically; the suction cup is fixed to the bottom surface of the L-shaped cylinder fixing plate, and the rotation axis is arranged vertically. The suction cup connecting plate is fixed on the rotating shaft of the first rotating cylinder, and the air inlet and exhaust ports of the suction cup are connected to the air source controlled by the controller; the baffle is fixed on the front side of the connecting plate, and is located above the vertical plate of the L-shaped cylinder fixing plate, and a plurality of compression springs are arranged between the bottom surface of the baffle and the top surface of the vertical plate of the cylinder fixing plate; the vertical plate of the L-shaped cylinder fixing plate includes a limit groove, and the limit block is fixed on the front side of the connecting plate, and is located in the limit groove. Under the thrust of the compression spring, the upper edge of the limit groove rests on the top surface of the limit block.

7. The all-in-one machine according to claim 2, characterized in that: It includes a flipping mechanism, and the workstation includes a flipping station, which is arranged between the NG blanking station and the labeling station, and the flipping mechanism is arranged on the side of the flipping station along the Y-axis direction; the flipping mechanism includes a flipping support, a cylinder, a second linear guide pair, a second rotary cylinder and a second clamping cylinder, the guide rail of the second linear guide pair is vertically fixed on the vertical plate of the flipping support, the cylinder body of the second rotary cylinder is fixed on the slider of the second linear guide pair, and the rotation axis of the second rotary cylinder is arranged along the Y-axis direction; the cylinder body of the cylinder is vertically fixed on the top of the flipping support, and the lower end of the cylinder piston rod is connected to the cylinder body of the second rotary cylinder; the cylinder body of the second clamping cylinder is fixed on the rotation axis of the second rotary cylinder, the clamping jaw of the second clamping jaw cylinder faces the workpiece on the flipping station, the clamping jaw of the second clamping jaw cylinder is equipped with a flip clamp, and the clamping jaw of the second clamping jaw cylinder opens and closes along the X-axis direction.

8. The all-in-one machine according to claim 7, characterized in that: It includes a gluing mechanism, and the workstations include a gluing station, which is arranged between the flipping station and the labeling station, and the gluing mechanism is arranged on the side of the gluing station along the Y-axis direction; the gluing mechanism includes a fifth linear module, a sixth linear module, a seventh linear module and a gluing device, the fifth linear module is arranged along the Y-axis direction and is fixed above the transmission line body through the fifth linear module bracket; the sixth linear module is arranged along the X-axis direction and is fixed on the slider of the fifth linear module; the seventh linear module is arranged vertically and fixed on the slider of the sixth linear module; the gluing device is fixed on the slider of the seventh linear module.

9. The all-in-one machine according to claim 8, characterized in that: The glue coating device includes a mounting bracket, a synchronous belt device driven by a servo motor, a screw nut pair, a third linear guide pair, a nut fixing seat, two push rods and an AB glue dispensing device, and the AB glue dispensing device includes two glue syringes, a glue mixer and a glue dispensing head; the back of the mounting bracket is fixed on the slider of the seventh linear module; the synchronous belt device is installed on the top of the mounting bracket, and the front of the mounting bracket includes a support seat, a glue cylinder fixing seat, a glue cylinder supporting seat and a glue head fixing seat; the support seat is arranged in the middle of the mounting bracket, and the two glue syringes are arranged in parallel below the support seat, the bottom of the barrel of the two glue syringes is supported by the glue cylinder supporting seat, and the upper part of the barrel of the two glue syringes is fixed by the glue cylinder fixing seat; the two glue The outlet at the bottom of the syringe barrel is connected to the glue mixer, and the glue head is connected to the outlet at the lower end of the glue mixer; the glue head fixing seat is located at the lower end of the mounting bracket, and the vertically arranged glue head is fixed by the glue head fixing seat; the upper end of the screw of the screw nut pair is driven and positioned by the synchronous belt device, and the lower end of the screw is supported by the support seat; the guide rail of the third linear guide pair is vertically fixed on the front side of the upper part of the mounting bracket, and the nut of the screw nut pair is installed in the nut fixing seat, and the nut fixing seat is fixed on the slider of the third linear guide pair; two sliding sleeves corresponding to the two push rods are installed on the support seat, the upper ends of the two push rods are fixed on the nut fixing seat, and the lower ends of the two push rods pass through the corresponding sliding sleeves respectively and press against the top of the two glue syringe pistons.

10. The all-in-one machine according to claim 8, characterized in that: The transmission line body includes two sets of battery cell positioning assemblies, which are respectively arranged at the labeling station and the gluing station; the battery cell positioning assembly includes two positioning devices, the positioning device includes a second multi-rod cylinder and a positioning block, the positioning block is fixed to the front end of the piston rod of the second multi-rod cylinder, and the front end of the positioning block includes a 90° angular positioning groove; the two positioning devices of the battery cell positioning assembly are respectively arranged on both sides of the conveyor belt of the corresponding station, and are respectively located on the extension lines of the two ends of a diagonal line of the workpiece on the corresponding station, and the angular positioning grooves at the front ends of the positioning blocks of the two positioning devices are opposite.

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