Battery cell OCV automatic detection equipment

Abstract

The invention discloses automatic cell OCV detection equipment, which relates to the technical field of cell detection and comprises a feeding station, a manipulator, a detection station, a sorting station, a discharging station and the like. A clamping jaw mechanism of the manipulator comprises a first fixing frame, and a plurality of clamping jaw units used for clamping battery cells are transversely arranged on the first fixing frame through a variable pitch module. The first lifting frame is arranged on the first fixing frame in an up-down moving mode. The first lifting frame faces the bottoms of the plurality of clamped battery cells and is provided with the bottom holding plate in a swinging manner. The first lifting frame is provided with a suction cup used for grabbing a carrier. The transfer conveying line of the sorting station moves and switches among the downstream end of the temporary storage conveying line, the upstream end of the OK conveying line, the upstream end of the NG conveying line and the OK temporary storage conveying line through a second electric sliding table module. Therefore, the automatic operation of the battery cell detection assembly line including carrying, OCV detection and sorting can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell detection, and in particular to a battery cell OCV automatic detection device. Background Art

[0002] The current trend of new energy is huge, and the requirements for products are getting higher and higher. Therefore, it is also very important to perform OCV testing on battery cells. OCV testing requires testing the voltage and resistance of the product. At present, the OCV testing of battery cells requires manual loading and unloading, manual voltage measurement, and manual sorting of qualified and unqualified products. The labor intensity is high and the efficiency of mass production is low. Therefore, it is necessary to develop a set of automated equipment for battery OCV testing and sorting of qualified products. The existing market equipment does not have a fully automated assembly line for battery OCV testing. During testing and sorting, manual moving is required, which is time-consuming and labor-intensive, and it is easy to damage the battery cell. Summary of the invention

[0003] The purpose of the present invention is to provide a battery cell OCV automatic detection device, which aims to overcome the above-mentioned problems existing in the prior art.

[0004] To achieve the purpose, the present invention provides the following technical solutions: An automatic OCV detection device for a battery cell, comprising a material incoming station, a manipulator, a detection station and a sorting station; The above-mentioned incoming material station is used to place at least one carrier equipped with a plurality of battery cells; The above-mentioned manipulator is used to transfer the battery cell from the incoming material station to the inspection station; the manipulator includes a manipulator arm and a clamping mechanism arranged on the manipulator arm, the clamping mechanism includes a first fixed frame, a clamping unit, a first lifting frame, a bottom plate and a grabbing unit, the first fixed frame is fixedly connected to the manipulator arm, the first fixed frame is transversely arranged with a plurality of clamping units for clamping the battery cell, the first fixed frame is movably provided with the first lifting frame, the first lifting frame is swingably provided with the bottom plate toward the bottom of the plurality of clamped battery cells, and the first lifting frame is provided with a grabbing unit for grabbing the carrier; The above-mentioned detection station includes a conveyor line, an electrical connection mechanism and a second blocking mechanism; the upstream end of the above-mentioned conveyor line is connected with the robot process, a plurality of battery cell tracks are arranged horizontally above the above-mentioned conveyor line, and a code scanning mechanism, a first blocking mechanism, an electrical connection mechanism and a second blocking mechanism are arranged in sequence along the conveying direction; the above-mentioned electrical connection mechanism includes a second mounting seat and an OCV probe, the above-mentioned second mounting seat is movably arranged above the conveyor line, and the second mounting seat is transversely arranged with a plurality of groups of the above-mentioned OCV probes; the above-mentioned second blocking mechanism includes a third mounting seat and a blocking member, and the above-mentioned third mounting seat is movably arranged with a plurality of blocking members; The above-mentioned sorting station includes a cache conveyor line, an OK temporary storage conveyor line, an NG conveyor line, an OK conveyor line and a transfer conveyor line. The downstream end process of the above-mentioned conveyor line is connected to the upstream end of the cache conveyor line, and a plurality of third blocking mechanisms are provided above the cache conveyor line; the above-mentioned transfer conveyor line moves and switches between the downstream end of the cache conveyor line, the upstream end of the OK conveyor line, the upstream end of the NG conveyor line and the OK temporary storage conveyor line through the second electric slide module.

[0005] Furthermore, the above-mentioned incoming material station is used to place at least one carrier equipped with a plurality of battery cells; the above-mentioned manipulator includes a manipulator arm and a clamping mechanism arranged on the manipulator arm, the above-mentioned clamping mechanism includes a first fixed frame, a clamping unit, a first lifting frame, a bottom plate and a grasping unit, the above-mentioned first fixed frame is fixedly connected to the manipulator arm, the first fixed frame is laterally arranged with a plurality of clamping units for clamping the battery cells, the first fixed frame is movably provided with the above-mentioned first lifting frame, the first lifting frame is swingably provided with the above-mentioned bottom plate toward the bottom of the plurality of clamped battery cells, and the first lifting frame is provided with a grasping unit for grasping the carrier.

[0006] Furthermore, the clamping claw unit includes a second fixed frame, a second lifting frame and a clamping plate. The second fixed frame is arranged on the first fixed frame, the lower end of the second fixed frame is provided with the second lifting frame movably arranged up and down, and the lower end of the second lifting frame is provided with the two clamping plates movably arranged.

[0007] Furthermore, the second lifting frame includes an upper connecting plate, a nitrogen spring and a lower connecting plate. The upper connecting plate is movably arranged on the second fixed frame and is equipped with a second cylinder for moving the upper connecting plate. The upper connecting plate is elastically floatingly arranged with the lower connecting plate through the nitrogen spring.

[0008] Furthermore, the above-mentioned clamping mechanism also includes a variable distance module, and the above-mentioned first fixing frame is arranged with a plurality of the above-mentioned clamping units in a laterally adjustable manner through the variable distance module.

[0009] Furthermore, the grabbing unit includes a plurality of suction cups, and the plurality of suction cups are downwardly disposed on the first lifting frame.

[0010] Furthermore, the above-mentioned incoming material station includes a pallet placing table, and a fork entrance is provided at the front end of the above-mentioned pallet placing table. The pallet placing table is provided with a first stopper on both sides of the fork entrance which can be opened and closed by a clamping cylinder, and the left, right and rear ends of the pallet placing table are provided with a second stopper which can be movably provided by a sixth cylinder.

[0011] Furthermore, a straightening mechanism is provided at the downstream end of the OK conveyor line; the straightening mechanism includes a mounting plate and a plurality of pneumatic clamps arranged on the mounting plate.

[0012] Furthermore, the battery cell OCV automatic detection equipment also includes a carrier temporary storage station and a battery cell temporary storage station connected to the robot process.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention is an automatic OCV testing device for battery cells. Under the premise of automatic testing, the test results of the battery cells are sorted and the OK battery cells are loaded back into the carrier. Compared with the existing testing equipment on the market, the present invention does not require manual handling, manual sorting, etc., and can realize the fully automated assembly line operation of battery cell testing and sorting, greatly improving the efficiency of testing, sorting and battery packaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a top view of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the incoming material station in the present invention.

[0017] Figure 4 The structure of the clamping mechanism in the present invention is shown in FIG. Figure 1 .

[0018] Figure 5 The structure of the clamping mechanism in the present invention is shown in FIG. Figure 2 .

[0019] Figure 6 It is the front view of the clamping mechanism in the present invention.

[0020] Figure 7 It is a schematic structural diagram of the clamping jaw unit in the present invention.

[0021] Figure 8 It is a schematic diagram of the structure of the detection station and the sorting station in the present invention.

[0022] Fig. 9 This is a top view of the detection station and the sorting station in the present invention.

[0023] Fig.10 The schematic diagram of the structure of the conveying line, the code scanning mechanism and the first blocking mechanism in the present invention, wherein the arrow indicates the moving direction of the battery cell.

[0024] Fig.11 The schematic diagram of the structure of the code scanning mechanism in the present invention is shown in FIG.

[0025] Fig.12 The schematic diagram of the structure of the conveying line, the electrical connection mechanism and the second blocking mechanism in the present invention, wherein the arrow indicates the moving direction of the battery cell.

[0026] Fig.13 The figure is a schematic diagram of the structure of the electrical connection mechanism in the present invention, wherein the arrow indicates the moving direction of the battery cell.

[0027] Fig.14 Schematic diagram of the structure of the second blocking mechanism in the present invention, wherein the arrow indicates the moving direction of the battery cell.

[0028] Fig.15 The diagram is a schematic diagram of the structure of the OK conveyor line in the present invention, wherein the arrow indicates the moving direction of the battery cell.

[0029] Fig.16 It is a structural schematic diagram of the temporary storage station of battery cells in the present invention.

[0030] Fig.17 It is a structural schematic diagram of the carrier temporary storage station in the present invention.

[0031] Fig.18 This is a schematic diagram of the structural disassembly of a material pile in the present invention. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is described below with reference to the accompanying drawings. In order to fully understand the present invention, many details are described below, but for those skilled in the art, the present invention can be implemented without these details.

[0033] like Figure 1 , Figure 2 and Fig.18 As shown, an automatic OCV detection device for battery cells includes an incoming material station 100, a manipulator 200, a detection station 300, a sorting station 400, a battery cell temporary storage station 500, a carrier temporary storage station 600, and a discharge station 700. Preferably, the incoming material station 100, the sorting station 400, the battery cell temporary storage station 500, the carrier temporary storage station 600, and the discharge station 700 are arranged around the manipulator 200.

[0034] Among them, the robot 200 is used to transfer the battery cell a from the incoming material station 100 to the inspection station 300, and to transfer the empty carrier b from the material station 100 to the carrier temporary storage station 600 or the outgoing material station 700.

[0035] The inspection station 300 and the sorting station 400 are connected in process. The inspection station 300 is used to scan the battery cells and perform OCV inspection; the sorting station 400 is used to sort the battery cells a with OK inspection results and the battery cells a with NG inspection results.

[0036] The robot 200 is also used to transfer the battery cell a with an OK test result from the OK conveyor line 65 of the sorting station 400 to the battery cell temporary storage station 500 or the unloading station 700, and to transfer the empty carrier b from the carrier temporary storage station 600 to the unloading station 700.

[0037] The specific structure of each station is described below.

[0038] 1. Stockpile like Fig.18 As shown, the pile is a stack of carriers b and battery cells a stacked on a pallet c. Specifically, the pallet c is a bottom support for use with a forklift or other handling machinery. Multiple layers of carriers b loaded with battery cells a are stacked on the pallet c. The carrier b includes but is not limited to foam, and a plurality of battery cell slots b1 are arranged at the upper and lower ends.

[0039] (II) Incoming material station like Figure 1 , Figure 2 , Figure 3 and Fig.18 As shown, the incoming material station 100 is used to place at least one carrier b containing a plurality of battery cells a, that is, the material pile mentioned above.

[0040] In this embodiment, the incoming material station 100 includes a pallet placement platform 11. The pallet placement platform 11 includes but is not limited to being constructed by a support plate 111, a side guide plate 112 and a rear baffle plate 113. A fork inlet 114 is provided at the front end of the pallet placement platform 11, and the pallet placement platform 11 is provided with a first stopper 12 on both sides of the fork inlet 114 that can be opened and closed by a clamping cylinder 121, and a second stopper 13 is movably provided at the left, right and rear ends of the pallet placement platform 11 by a sixth cylinder 131.

[0041] When in use, the material pile is placed into the pallet placement platform 11 from the fork entrance 114 with the help of the fork of the forklift, and then the first blocks 12 on both sides of the fork entrance 114 are closed by the clamping cylinder 121, and the front end of the pallet c is blocked by the first blocks 12, and the second blocks 13 are pushed out by the sixth cylinder 131, and the left, right and rear ends of the pallet c are supported, so that the pallet c is positioned and clamped.

[0042] 3. Robot like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Fig.18 As shown, the manipulator 200 includes a manipulator arm 201 and a gripper mechanism 202 disposed on the manipulator arm 201. The manipulator arm 201 includes but is not limited to a multi-axis manipulator arm, which is a common technical means and will not be described in detail here.

[0043] The clamp mechanism 202 includes a first fixed frame 21, a first lifting frame 23, a gripping unit 24, a bottom plate 25 and a clamp unit 26. The flange 211 of the first fixed frame 21 is fixedly connected to the free end of the robot arm 201. The first fixed frame 21 is laterally arranged with six clamp units 26 for clamping the battery cell a. Of course, the number of the clamp units can be increased or decreased as needed and is not limited to six.

[0044] like Figure 5 , Figure 6 and Figure 7 As shown, the clamping unit 26 includes a second fixed frame 261, a second lifting frame 262 and a clamping plate 264. The connecting seat 2611 of the second fixed frame 261 is arranged on the first fixed frame 21 in a lateral adjustable manner through the variable distance module 22. The lower end of the second fixed frame 261 is provided with a second lifting frame 262 in a manner that it can move up and down. The lower end of the second lifting frame 262 is provided with two clamping plates 264 in a manner that it can be opened and closed.

[0045] Preferably, the second lifting frame 262 has a floating mechanism, which includes an upper connecting plate 2621, a nitrogen spring 2622 and a lower connecting plate 2623. The upper connecting plate 2621 is movably arranged on the second fixing frame 261 through a slide rail module 2624, and is equipped with a second cylinder 2620 for actuating the upper connecting plate 2621; the upper connecting plate 2621 is elastically floatingly arranged with a lower connecting plate 2623 through a nitrogen spring 2622. The lower connecting plate 2623 is provided with two clamping plates 264 that can be mutually opened and closed through a seventh cylinder 2641.

[0046] Preferably, the upper connecting plate 2621 is provided with a photoelectric sensor 263, which is used to control the second cylinder 2620 when the lower connecting plate 2623 approaches the upper connecting plate 2621 to a certain position, so as to stop the second lifting frame 262 from moving downward or move upward to reset, thereby preventing the clamping plate 264 from making hard contact with the battery cell c during the downward movement, thereby playing a buffering and protective role. The photoelectric sensor 263 includes but is not limited to a slot-type photoelectric sensor. Accordingly, the lower connecting plate 2623 is fixed with a sensor sheet 2631 for triggering the photoelectric sensor 263.

[0047] like Figure 5 and Figure 6 As shown, preferably, the first fixing frame 21 is arranged with six clamping claw units 26 which can be adjusted laterally (ie, can be adjusted left and right) through the variable distance module 22, so as to adjust the distance between the clamped battery cells as needed.

[0048] like Figure 4 , Figure 5 , Figure 6 and Fig.18As shown, the first fixing frame 21 is provided with a first lifting frame 23 which can be moved up and down. The first lifting frame 23 is provided with a bottom plate 25 which can be swingably provided toward the bottom of the clamped battery cells a, and the first lifting frame 23 is provided with a grabbing unit 24 for grabbing the carrier b.

[0049] Specifically, the first lifting frame 23 is divided into two parts, left and right, which are respectively arranged at the left and right ends of the first fixed frame 21 so as to be movable up and down through linear bearings and linear guide shafts, and are both equipped with a first cylinder 231 to make it move. There are two bottom plates 25, which are respectively located at the front and rear sides of the first lifting frame 23. The two ends of the bottom plate 25 are respectively arranged at the left and right parts of the first lifting frame 23 through connecting plates 252 so as to be rotatable up and down, and are both equipped with a third cylinder 251 to make it move.

[0050] Specifically, the gripping unit 24 includes four suction cups, which are arranged downward at the four corners of the first lifting frame 23 to suck the four corners of the carrier b by negative pressure. Of course, the number of suction cups can be increased or decreased as needed and is not limited to four.

[0051] When in use, the second lifting frame 262 of the clamping claw unit 26 moves down, and at the same time, the first lifting frame 23 moves down, so that the suction cup contacts the upper end of the carrier b; after the two clamping plates 264 clamp the battery cell a, the second lifting frame 262 moves up to reset, and at the same time, the suction cup 24 restricts the carrier b, so that the battery cell a is taken out of the carrier b; the distance between the six clamped battery cells a is adjusted by the variable distance module 22, and then they are transferred to the conveyor line 31 of the inspection station 300, with one battery cell a placed on each track. In the process of taking the battery cell a out of the carrier b and transferring it to the inspection station 300, the bottom plate 25 swings downward to hold the bottom of the six battery cells a, preventing the battery cells from accidentally falling during the transfer process, and providing auxiliary support and protection for the battery cells.

[0052] (IV) Inspection station like Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the inspection station 300 includes a conveying line 31 , a code scanning mechanism 41 , a first blocking mechanism 42 , an electrical connection mechanism 51 and a second blocking mechanism 52 .

[0053] like Figure 8 , Fig. 9 , Fig.10 and Fig.18, the upstream end of the conveyor line 31 is connected with the process of the manipulator 200, that is, the manipulator 200 can transfer the battery cell a to the upstream end of the conveyor line 31. Specifically, the conveyor line 31 includes a first belt conveyor 311, and a plurality of battery cell tracks 312 are arranged horizontally above the first belt conveyor 311. Preferably, the battery cell track 312 is composed of two guide rods 3121 extending along the conveying direction of the first belt conveyor 311. In addition, the guide rod 3121 is arranged along the conveying direction with a plurality of rollers 3122 for rolling contact with the surface of the battery cell a. The number of battery cell tracks 32 includes but is not limited to six.

[0054] like Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the conveyor line 31 is provided with a code scanning mechanism 41, a first blocking mechanism 42, an electrical connection mechanism 51 and a second blocking mechanism 52 in sequence along its conveying direction. Preferably, the first belt conveyor 311 of the conveyor line 31 is formed by two belt conveyors connected end to end, one of which is provided with a code scanning mechanism 41 and a first blocking mechanism 42, and the other is provided with an electrical connection mechanism 51 and a second blocking mechanism 52.

[0055] like Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.18 As shown, the code scanning mechanism 41 includes a first tripod 411, and a plurality of code scanners 414 are arranged on the first tripod 411. Preferably, the first tripod 411 is provided with a first mounting seat 413 that can be moved left and right through a sliding module, and is equipped with a fourth cylinder 412 that moves the first mounting seat 413. Three code scanners 414 are arranged on the first mounting seat 413 in a left and right manner.

[0056] When in use, the first blocking mechanism 42 blocks the battery cell a on the conveyor line 31, so that the battery cell a stops under the code scanning mechanism 41; then, the three code scanners 414 scan the battery cells a on the three battery cell tracks 32 (such as barcodes) to obtain product information; then move the first mounting seat 413 to allow the three code scanners 414 to scan the battery cells a on the other three battery cell tracks 32. In order to associate the product information with the OCV test results, etc.; after the code scanning is completed, the code scanning mechanism 41 and the first blocking mechanism 42 are reset to release the battery cell a. Among them, the specific structure of the first blocking mechanism 42 is the same as that of the second blocking mechanism, and please refer to the detailed description of the second blocking mechanism below.

[0057] like Figure 8 , Fig. 9 , Fig.12 , Fig.13 and Fig.18 The electrical connection mechanism 51 includes a second mounting seat 513 and a plurality of OCV probes 514. The second mounting seat 513 is movably arranged above the conveyor line 31, and the second mounting seat 513 is provided with six rows of OCV probes 514, two OCV probes 514 in each row, and a total of sixteen OCV probes 514. The two OCV probes 514 in each row are used to electrically connect the positive and negative poles of the same battery cell a, and are electrically connected to the existing OCV tester (not shown in the figure). More specifically, the second tripod 511 is movably arranged with the second mounting seat 513 through the first electric slide module 512, and is located above the conveyor line 31. The second mounting seat 513 is arranged with sixteen seat bodies 5131, and each seat body 5131 is fixedly installed with an OCV probe 514.

[0058] like Figure 8 , Fig. 9 , Fig.12 , Fig.14 and Fig.18 , the second blocking mechanism 52 includes a third mounting seat 522 and a blocking member 524. The third mounting seat 522 is provided with a plurality of blocking members 524 movably up and down, and is equipped with a fifth cylinder 523 for making it move. Specifically, the third bracket 521 is provided with a third mounting seat 522 movably up and down through a sliding module, and the third mounting seat 522 is provided with three blocking members 524 arranged in an array, and the three blocking members 524 are located above the conveyor line 31, and each blocking member 42 spans across two battery cell tracks 32 of the conveyor line 31, that is, three blocking members 524 span across six battery cell tracks 32 of the conveyor line 31. Preferably, the blocking member 524 is a roller, which is rotatably provided on the third mounting seat 522 to prevent the battery cell a from being scratched when moving up and down.

[0059] When in use, the blocking member 524 is moved downward to block the battery cell a on the conveyor line 31, so that the battery cell a stops below the electrical connection mechanism 51; then, the OCV probe 514 is moved downward to electrically connect the battery cell a, and the OCV test is performed by the existing OCV tester electrically connected by the OCV probe 514; after the test is completed, the OCV probe 514 and the blocking member 524 are moved upward and reset to release the battery cell a.

[0060] (V) Sorting station like Figure 1 , Figure 8 , Fig. 9 and Fig.18The sorting station 400 includes a buffer conveyor line 61, a transfer conveyor line 62, an NG conveyor line 63, an OK temporary storage conveyor line 64, and an OK conveyor line 65. In addition, the buffer conveyor line 61, the transfer conveyor line 62, the NG conveyor line 63, the OK temporary storage conveyor line 64, and the OK conveyor line 65 all include a belt conveyor and a cell track arranged on the belt conveyor. The specific structure is the same as that of the conveyor line 31, which will not be repeated here.

[0061] The upstream end of the buffer conveyor line 61 is connected with the downstream end of the conveyor line 31, and a plurality of third blocking mechanisms 611 are provided above the buffer conveyor line 61. The specific structure of the third blocking mechanism 611 refers to the second blocking mechanism 52, and the difference between the two is that the three blocking members 524 of the second blocking mechanism 52 are controlled by a fifth cylinder 523 and move up and down together. The three blocking members of the third blocking mechanism 611 are independent of each other and are controlled by three cylinders separately, that is, the tripod of the third blocking mechanism 611 is provided with three mounting seats that can be moved up and down through a sliding module, each mounting seat is provided with a blocking member, and each mounting seat is equipped with a cylinder.

[0062] In coordination therewith, the transfer conveyor line 62 has two belt conveyors arranged side by side, and each belt conveyor has a battery cell track.

[0063] like Figure 1 , Figure 8 , Fig. 9 and Fig.18 The transfer conveyor line 62 can be moved left and right through the second electric slide module 621, so that it can move and switch between the downstream end of the cache conveyor line 61, the upstream end of the OK conveyor line 65, the upstream end of the NG conveyor line 63 and the OK temporary storage conveyor line 64.

[0064] When in use, the upper computer (or control system) controls the operation of the sorting station 400, so as to sort the cells according to the OCV test results (divided into NG and OK). The specific operation is as follows: The battery cells a entering the cache conveyor line 61 from the conveyor line 31 are blocked by the three blocking members of the third blocking mechanism 611; one blocking member is moved up each time to transfer two battery cells a to the transfer conveyor line 62; the transfer conveyor line 62 completes the transfer and sorting of the battery cells a according to the following transfer method.

[0065] Transfer method: If the test results of both battery cells a are NG, they are transferred to the NG conveyor line 63; if the test results of both battery cells a are OK, they are transferred to the OK conveyor line 65; if the test result of one battery cell a is NG and the other is OK, the battery cell a with NG test result is transferred to the NG conveyor line 63, and the battery cell a with OK test result is transferred to the OK temporary storage conveyor line 64. After two battery cells a are stored in the OK temporary storage conveyor line 64, they are transferred together to the OK conveyor line 65.

[0066] like Figure 1 , Figure 8 , Fig. 9 and Fig.15 As shown, the downstream end of the OK conveyor line 65 is provided with a straightening mechanism 651 for straightening the battery cells to facilitate the robot to grab the battery cells. The straightening mechanism 651 includes a mounting plate 6511, and six pneumatic clamps 6512 arranged on the mounting plate 6511. Each pneumatic clamp 6512 corresponds to a track of the OK conveyor line 65. Of course, the number of pneumatic clamps 6512 can also be increased or decreased as needed, and is not limited to six. In this embodiment, the reason why there are six pneumatic clamps 6512 is that the robot has six clamping units, and the OK conveyor line 65 correspondingly has six tracks. Each track requires a pneumatic clamp 6512, so there are a total of six pneumatic clamps 6512.

[0067] (VI) Temporary storage of battery cells, temporary storage of carriers and unloading stations like Figure 1 , Figure 2 , Figure 3 , Fig.16 , Fig.17 and Fig.18 As shown, the cell temporary storage station 500 includes a bracket 5001, and the bracket 5001 is fixed with five fixtures 5002 for placing the cell a. Of course, the number of the fixtures 5002 can also be increased or decreased as needed.

[0068] The carrier temporary storage station 600 includes a placement rack 6001 , and positioning pieces 6002 are fixed around the placement rack 6001 to facilitate positioning and placement of the carrier b.

[0069] The specific structure of the material discharging station 700 is the same as that of the material receiving station 100 (eg Figure 3 shown), which will not be described here in detail.

[0070] like Figure 1-16 As shown, the battery cell OCV automatic detection equipment is controlled by the host computer (or control system) to control the operation of each station. The specific operation steps are as follows: (1) Use a forklift to transport the material pile to be inspected (such as Fig.16 As shown in the figure, the raw material is transferred to the incoming material station 100 and is positioned and fixed by the incoming material station 100.

[0071] (2) The robot 200 transfers the battery cell a from the incoming material station 100 to the upstream end of the conveyor line 31 of the inspection station 300; after the carrier b is emptied, if the current carrier b of the unloading station 700 is full of battery cells, the robot 200 transfers the empty carrier b from the incoming material station 100 to the unloading station 700; if the current carrier b of the unloading station 700 is not full of battery cells, the robot 200 transfers the empty carrier b from the incoming material station 100 to the carrier temporary storage station 600, and when needed, transfers it from the carrier temporary storage station 600 to the unloading station 700.

[0072] (3) The conveyor line 31 conveys the battery cell a; the first blocking mechanism 42 blocks the battery cell a below the barcode scanner 414. The barcode scanner 414 scans the battery cell a and obtains the product information. Then, the first blocking mechanism 42 releases the battery cell a.

[0073] (4) The conveyor line 31 continues to convey the scanned battery cell a; the second blocking mechanism 52 blocks the scanned battery cell a below the electrical connection mechanism 51; the OCV probe 514 of the electrical connection mechanism 51 moves downward to perform OCV testing on the battery cell a. The OCV test results are divided into NG and OK.

[0074] (5) The conveyor line 31 continues to convey the battery cell a after the OCV test; the battery cell a then enters the buffer conveyor line 61 of the sorting station 400; the battery cell a is blocked at the end of the buffer conveyor line 61 by the third blocking mechanism 611; the third blocking mechanism 611 lifts one of the blocking members, and the buffer conveyor line 61 conveys the two released battery cells a to the transfer conveyor line 62; the transfer conveyor line 62 sorts the battery cells a with NG test results and OK test results according to the above transfer method.

[0075] (6) The robot 200 transfers the battery cell a from the OK conveyor line 65 to the carrier b of the unloading station 700. When the carrier b is full, the robot 200 grabs the empty carrier b and puts it into the unloading station 700. This process is repeated to form a material pile in the unloading station 700 (such as Fig.16 In addition, if the number of available cell slots of carrier b is less than the number of cells gripped by robot 200, robot 200 first places the excess cells a in the fixture on the cell temporary storage station 500, and transfers them to carrier b of the unloading station 700 when the number of cells on the cell temporary storage station 500 is consistent with the number of available cell slots of carrier b.

[0076] (7) The material pile can be taken out from the unloading station 700 by a forklift.

[0077] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. An automatic OCV detection device for battery cells, characterized in that: Including incoming material station, manipulator, inspection station and sorting station; The incoming material station is used to place at least one carrier equipped with a plurality of battery cells; The manipulator is used to transfer the battery cell from the incoming material station to the inspection station; the manipulator includes a manipulator arm and a clamping mechanism arranged on the manipulator arm, the clamping mechanism includes a first fixed frame, a clamping unit, a first lifting frame, a bottom plate and a grabbing unit, the first fixed frame is fixedly connected to the manipulator arm, the first fixed frame is transversely arranged with a plurality of clamping units for clamping the battery cell, the first fixed frame is movably provided with the first lifting frame, the first lifting frame is swingably provided with the bottom plate toward the bottom of the plurality of clamped battery cells, and the first lifting frame is provided with a grabbing unit for grabbing the carrier; The detection station includes a conveyor line, an electrical connection mechanism and a second blocking mechanism; the upstream end of the conveyor line is connected to the robot process, a plurality of battery cell tracks are arranged horizontally above the conveyor line, and a code scanning mechanism, a first blocking mechanism, an electrical connection mechanism and a second blocking mechanism are arranged in sequence along the conveying direction; the electrical connection mechanism includes a second mounting seat and an OCV probe, the second mounting seat is movably arranged above the conveyor line, and a plurality of groups of OCV probes are arranged horizontally on the second mounting seat; the second blocking mechanism includes a third mounting seat and a blocking member, the third mounting seat is movably arranged up and down and a plurality of blocking members are arranged; The sorting station includes a cache conveyor line, an OK temporary storage conveyor line, an NG conveyor line, an OK conveyor line and a transfer conveyor line. The downstream end process of the conveyor line is connected to the upstream end of the cache conveyor line, and a plurality of third blocking mechanisms are provided above the cache conveyor line; the transfer conveyor line moves and switches between the downstream end of the cache conveyor line, the upstream end of the OK conveyor line, the upstream end of the NG conveyor line and the OK temporary storage conveyor line through the second electric slide module.

2. The battery cell OCV automatic detection device according to claim 1, characterized in that: The clamping claw unit includes a second fixed frame, a second lifting frame and a clamping plate. The second fixed frame is arranged on the first fixed frame. The lower end of the second fixed frame is provided with the second lifting frame so as to be movable up and down. The lower end of the second lifting frame is provided with two clamping plates so as to be openable and closable.

3. The battery cell OCV automatic detection device according to claim 2, characterized in that: The second lifting frame includes an upper connecting plate, a nitrogen spring and a lower connecting plate. The upper connecting plate is movably arranged on the second fixing frame and is equipped with a second cylinder to move the upper connecting plate. The upper connecting plate is elastically floatingly arranged with the lower connecting plate through the nitrogen spring.

4. The battery cell OCV automatic detection device according to claim 1, characterized in that: The clamping mechanism further comprises a distance-changing module, and the first fixing frame is provided with a plurality of the clamping units arranged in a transversely adjustable manner through the distance-changing module.

5. The battery cell OCV automatic detection device according to claim 1, characterized in that: The grabbing unit comprises a plurality of suction cups, and the plurality of suction cups are arranged downward on the first lifting frame.

6. The battery cell OCV automatic detection device according to claim 1, characterized in that: The incoming material station includes a pallet placement table, a fork entrance is provided at the front end of the pallet placement table, first blocks are provided on both sides of the fork entrance that can be opened and closed by a clamping cylinder, and second blocks are movably provided on the left, right and rear ends of the pallet placement table by a sixth cylinder.

7. The battery cell OCV automatic detection device according to claim 1, characterized in that: A straightening mechanism is provided at the downstream end of the OK conveying line; the straightening mechanism comprises a mounting plate and a plurality of pneumatic clamps arranged on the mounting plate.

8. The battery cell OCV automatic detection device according to claim 1, characterized in that: The battery cell OCV automatic detection equipment also includes a carrier temporary storage station and a battery cell temporary storage station connected to the robot process.

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