Battery cell OCV detection line with NG replacement mechanism

Abstract

The utility model discloses a battery cell OCV detection line with an NG replacement mechanism, and relates to the field of battery cell processing equipment. Manual work is effectively replaced, defective products can be taken out of the battery cell tray after OCV detection, qualified products are placed in vacant positions, and the qualified products of various sizes do not need to be prepared additionally. According to the technical scheme, the device comprises a rack, an OCV detection mechanism, a cache table, an NG gripper and a transplanting mechanism, wherein the OCV detection mechanism, the cache table, the NG gripper and the transplanting mechanism are connected to the rack. According to the utility model, in the process of conveying battery cells by the speed chain, OCV detection is completed through automatic equipment, and defective products and qualified products can be sorted according to different conditions after detection, so that the degree of automation is high, various defects caused by manual processing are effectively overcome, and the production efficiency is improved. In addition, a batch of qualified products to be used do not need to be prepared in the working process, and a series of advantages of being high in working efficiency, good in working effect, easy to operate and the like are achieved on the whole.

Description

Technical Field

[0001] The utility model relates to the field of battery core processing equipment, in particular to equipment and a process for processing defective and qualified products after OCV detection of battery cores. Background Art

[0002] In recent years, there are many types of power batteries with different sizes. It is difficult to load batteries with different cell sizes. In addition, routine OCV testing, handling of defective products and replacement of qualified products require manual intervention. Specifically: after the speed chain transports a row of cells for OCV testing, once a defective product appears, manual intervention is required to remove the defective product from the cell tray and place the pre-prepared qualified product in the vacant position.

[0003] However, people have found in actual use that the above working process has the following defects:

[0004] First, manual labor will bring problems such as high labor intensity, high cost and high error rate, and requires strict standardization of operating procedures, which is very inconvenient to operate;

[0005] Second, it is difficult to control the number of qualified products prepared in advance during actual operation, and it is very easy to have insufficient qualified products, which cannot meet the basic work requirements of timely replacement of defective products;

[0006] Third, when the size of the battery cell changes, a new batch of qualified products needs to be prepared manually, which is very troublesome.

[0007] Therefore, how to solve the above-mentioned defects and automatically and efficiently replace defective products after OCV detection has become a technical problem that needs to be solved urgently by technical personnel in this field. Utility Model Content

[0008] In view of the above problems, the utility model proposes a battery cell OCV testing line with an NG replacement mechanism, which effectively replaces manual labor, can take out defective products from the battery cell tray after OCV testing, and put qualified products in the vacant positions, without the need to prepare qualified products of various sizes.

[0009] The technical solution of the utility model is as follows: it comprises a frame 1 and an OCV detection mechanism 4, a buffer table 5, an NG gripper 7, and a transplanting mechanism 9 connected to the frame 1;

[0010] The battery cell OCV testing line also includes a double-speed chain 2 that penetrates the frame 1 along the X direction, and a battery cell tray 3 is transported by the double-speed chain 2. A plurality of battery cell slots are provided on the battery cell tray 3, and an OCV testing mechanism 4 is used to perform OCV testing on the transported battery cells;

[0011] The cache table 5 is fixedly mounted on the frame 1 and is located beside the speed chain 2. The cache table 5 is also provided with a plurality of battery card slots;

[0012] A cell tray transfer area 8 is provided between the buffer station 5 and the double-speed chain 2, and the transfer mechanism 9 is located between the double-speed chain 2 and the cell tray transfer area 8, and the transfer mechanism 9 is used to complete the transfer of the cell tray between the double-speed chain 2 and the cell tray transfer area;

[0013] A battery cell NG area 6 is also provided next to the cache table 5. The NG gripper 7 is connected to the frame 1, and the NG gripper 7 has a Y-direction movement range covering the speed chain 2, the battery cell tray transfer area 8, the cache table 5 and the battery cell NG area 6.

[0014] The OCV detection mechanism 4 includes a detection head 41, a detection head seat plate 42, a Z-direction driving mechanism 43, a detection head substrate 44, a Y-direction guide rail 45 and a Y-direction driving mechanism 46. The Y-direction guide rail 45 is fixedly connected to the frame 1 along the Y-direction, and one end thereof extends to the top of the speed chain 2. The detection head substrate 44 is slidably connected to the Y-direction guide rail 45, and the detection head substrate 44 is driven to reciprocate along the Y-direction by the Y-direction driving mechanism 46. There are several detection heads 41, and they are all vertically installed on the detection head seat plate 42. The detection head seat plate 42 is connected to the detection head substrate 44 through the Z-direction driving mechanism 43, and the detection head seat plate 42 is driven to reciprocate and rise and fall along the Z-direction by the Z-direction driving mechanism 43.

[0015] The transplanting mechanism 9 includes a lifting platform 91 and a fixed platform 92;

[0016] The lifting platform 91 is arranged under the double-speed chain 2, and the lifting platform 91 includes a lifting platform 911, a platform driving mechanism 912, and a plurality of first feeding rollers 913. The lifting platform 911 is connected to the frame 1 through the platform driving mechanism 912, so that it rises above the double-speed chain 2 or falls below the double-speed chain 2 under the drive of the platform driving mechanism 912. The axis of the first feeding roller 913 is arranged along the X direction, and is rotatably connected to the lifting platform 911, and the first feeding roller 913 is driven to rotate by the first rotating power source;

[0017] The fixed platform 92 includes a fixed platform 921 and a plurality of second feeding rollers 922. The fixed platform 921 is fixedly mounted on the frame and arranged between the buffer platform 5 and the double-speed chain 2. The axis of the second feeding roller 922 is arranged along the X direction and is rotatably connected to the fixed platform 921. The second feeding roller 922 is driven to rotate by a second rotating power source; the top of the second feeding roller 922 is higher than the double-speed chain 2. Thus, a cell tray transplanting area 8 is formed on the fixed platform 92, and the second feeding roller 922 is rotated to transport the cell tray along the Y direction.

[0018] The NG gripper 7 includes a gripper 71, a gripper base 72, a base driving mechanism 73, a gripper beam 74, a horizontal guide rail 75 and a beam driving mechanism 76. The horizontal guide rail 75 is fixedly connected to the frame 1 along the Y direction and is located above the battery cell tray transplanting area 8, the cache table 5 and the battery cell NG area 6. The gripper beam 74 is slidably connected to the horizontal guide rail 75, and the gripper beam 74 is driven to reciprocate along the Y direction by the beam driving mechanism 76. The gripper beam 74 is arranged along the X direction, and the gripper base 72 is slidably connected to the gripper beam 74, and the gripper base 72 is driven to reciprocate along the X direction by the base driving mechanism 73. The gripper 71 has two grippers, and both grippers 71 are connected to the gripper base 72 in a liftable manner.

[0019] Follow these steps to work:

[0020] When a battery tray 3 is transported on the speed chain 2, the OCV detection mechanism 4 starts to perform OCV detection on a number of batteries on the battery tray 3;

[0021] When NG material is detected for the first time, the transfer mechanism 9 is activated to transfer the battery tray 3 to the battery tray transfer area 8; the NG gripper 7 grabs the NG material on the battery tray 3 to the battery NG area 6, and grabs the qualified products and puts them into the buffer table 5; the transfer mechanism 9 transports in the reverse direction, and transfers the battery tray 3 from the battery tray transfer area 8 to the double-speed chain 2, and the double-speed chain 2 removes the empty battery tray 3;

[0022] Continue to perform OCV testing on the battery tray 3 transported by the double-speed chain 2. When NG material is detected again, handle it according to the following two situations respectively until all the batteries to be tested have completed OCV testing:

[0023] Case 1: If the number of NG materials is less than or equal to the number of qualified materials, the NG gripper 7 grabs the NG materials on the battery tray 3 to the battery NG area 6, and grabs the qualified products in the buffer table 5 and puts them into the buffer table 5, and the double-speed chain 2 removes the empty and full battery trays 3;

[0024] Case 2: If the quantity of NG materials is greater than the quantity of qualified materials, the transplanting mechanism 9 is started to transfer the battery tray 3 to the battery tray transplanting area 8, the NG gripper 7 grabs the NG materials on the battery tray 3 to the battery NG area 6, and grabs the qualified products and puts them into the buffer table 5; the transplanting mechanism 9 transports in the reverse direction to transfer the battery tray 3 from the battery tray transplanting area 8 to the double-speed chain 2, and the double-speed chain 2 removes the empty battery tray 3.

[0025] During the process of conveying battery cells by the speed chain, the utility model completes the OCV detection through automated equipment, and can sort defective products and qualified products according to different situations after the detection. The high degree of automation effectively overcomes the various defects caused by manual processing, and the utility model does not need to prepare a batch of qualified products for use when working. Overall, it has a series of advantages such as high work efficiency, good work effect and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the structural diagram of this case.

[0027] Figure 2 This is a schematic diagram of the structure of the frame assembly and the cover in this case.

[0028] Figure 3 It is the three-dimensional structure of the OCV testing organization in this case. Figure 1 ,

[0029] Figure 4 It is the three-dimensional structure of the OCV testing organization in this case. Figure 2 ,

[0030] Figure 5 This is a three-dimensional diagram of the cache table in this case.

[0031] Figure 6 This is the layout diagram of the double-speed chain, battery tray transfer area, cache table, and battery NG area in this case.

[0032] Figure 7 This is a three-dimensional diagram of the lifting platform in this case.

[0033] Figure 8 This is a three-dimensional diagram of the battery cell NG area in this case.

[0034] Fig. 9 This is a three-dimensional image of the NG gripper in this case.

[0035] In the figure, 1 is the rack, 2 is the speed chain, and 3 is the battery tray;

[0036] 4 is an OCV detection mechanism, 41 is a detection head, 42 is a detection head base plate, 43 is a Z-direction drive mechanism, 44 is a detection head base plate, 45 is a Y-direction guide rail, and 46 is a Y-direction drive mechanism;

[0037] 5 is a buffering table, 6 is a battery cell NG area, 7 is an NG gripper, 71 is a gripper, 72 is a gripper base, 73 is a base drive mechanism, 74 is a gripper beam, 75 is a horizontal guide rail, 76 is a beam drive mechanism, 77 is a lifting electric cylinder, and 78 is a lifting air cylinder;

[0038] 8 is the battery tray transplanting area;

[0039] 9 is a transplanting mechanism, 91 is a lifting platform, 92 is a fixed platform, 911 is a lifting platform, 912 is a platform driving mechanism, 913 is a first feeding roller, 921 is a fixed platform, and 922 is a second feeding roller. DETAILED DESCRIPTION

[0040] In order to clearly illustrate the technical features of this patent, this patent is elaborated in detail below through a specific implementation method and in combination with its accompanying drawings.

[0041] like Figure 1 , 2 As shown, the case as a whole includes a frame 1, a cover, and a speed chain 2 connected to the frame 1, a battery tray 3, an OCV detection mechanism 4, a buffer table 5, a battery NG area 6, an NG gripper 7, a battery tray transplanting area 8, and a transplanting mechanism 9;

[0042] The Z direction is the height direction, and the speed chain 2 penetrates the frame 1 along the X direction. The battery cell tray 3 is transported by the speed chain 2, and a plurality of battery cell slots are provided on the battery cell tray 3.

[0043] like Figure 3 , 4 As shown, the OCV detection mechanism 4 includes a detection head 41, a detection head seat plate 42, a Z-direction driving mechanism 43, a detection head substrate 44, a Y-direction guide rail 45 and a Y-direction driving mechanism 46. The Y-direction guide rail 45 is fixedly connected to the frame 1 along the Y-direction, and one end thereof extends to the top of the double-speed chain 2. The detection head substrate 44 is slidably connected to the Y-direction guide rail 45, and the detection head substrate 44 is driven to reciprocate along the Y-direction by the Y-direction driving mechanism 46. There are several detection heads 41, and they are all vertically installed on the detection head seat plate 42. The detection head seat plate 42 is connected to the detection head substrate 44 through the Z-direction driving mechanism 43, and the detection head seat plate 42 is driven to reciprocate and rise and fall along the Z-direction by the Z-direction driving mechanism 43.

[0044] During operation, the Z-direction driving mechanism 43 and the Y-direction driving mechanism 46 can drive the plurality of detection heads 41 to move in the Y and Z directions to complete the OCV detection of the plurality of cells on the cell tray 3 .

[0045] The Y-axis driving mechanism 46 is an electric linear slide, the motor of which is fixed to the Y-axis guide rail 45, the lead screw of which is rotatably connected to the Y-axis guide rail 45 and connected to the output rod of the motor, the nut of which is threadably connected to the lead screw, and the detection head substrate 44 is fixedly connected to the slide of the electric linear slide.

[0046] The Z-direction driving mechanism 43 includes a linear electric cylinder and a Z guide column arranged along the Z direction, the cylinder body of the linear electric cylinder is fixedly mounted on the detection head substrate 44, and the actuating rod of the linear electric cylinder is fixedly mounted on the detection head base plate 42, the lower end of the Z guide column is fixedly mounted on the detection head base plate 42, and the Z guide column passes through the detection head substrate 44.

[0047] like Figure 5 As shown, the cache table 5 is fixedly mounted on the frame 1 and is located next to the speed chain 2 . The cache table 5 is also provided with a plurality of battery cell slots.

[0048] like Figure 6 As shown, a battery tray transfer area 8 is set between the cache table 5 and the speed chain 2, and the transfer mechanism 9 is located between the speed chain 2 and the battery tray transfer area 8. The transfer of the battery tray between the speed chain 2 and the battery tray transfer area is completed by the transfer mechanism 9.

[0049] like Figure 6 , 7 As shown, the transplanting mechanism 9 includes a lifting platform 91 and a fixed platform 92. The lifting platform 91 is arranged under the double-speed chain 2. The lifting platform 91 includes a lifting platform 911, a platform driving mechanism 912 and a plurality of first feeding rollers 913. The lifting platform 911 is connected to the frame 1 through the platform driving mechanism 912, so that it rises above the double-speed chain 2 or falls below the double-speed chain 2 under the drive of the platform driving mechanism 912. The axis of the first feeding roller 913 is arranged along the X direction and is rotatably connected to the lifting platform 911. The first feeding roller 913 is driven to rotate by the first rotating power source.

[0050] In the above, the table driving mechanism 912 is a vertically arranged cylinder, the cylinder body of the cylinder is fixedly connected to the frame 1, and the cylinder rod is fixedly connected to the lifting table 911, so that when the lifting table 911 rises above the speed chain 2, the battery cell tray is lifted up and the first feeding roller 913 is rotated to move the battery cell tray out of the speed chain 2 along the Y direction.

[0051] The fixed platform 92 includes a fixed platform 921 and a plurality of second feeding rollers 922. The fixed platform 921 is fixedly mounted on the frame and arranged between the buffer platform 5 and the double-speed chain 2. The axis of the second feeding roller 922 is arranged along the X direction and is rotatably connected to the fixed platform 921. The second feeding roller 922 is driven to rotate by a second rotating power source; the top of the second feeding roller 922 is higher than the double-speed chain 2. Thus, a cell tray transplanting area 8 is formed on the fixed platform 92, and the second feeding roller 922 is rotated to transport the cell tray along the Y direction.

[0052] The first rotating power source mentioned above is a motor.

[0053] like Figure 8 A battery cell NG area 6 is provided next to the cache table 5, and the NG gripper 7 is connected to the frame 1, and the movement range of the NG gripper 7 in the Y direction covers the speed chain 2, the battery cell tray transfer area 8, the cache table 5 and the battery cell NG area 6.

[0054] like Fig. 9 The NG gripper 7 includes a gripper 71, a gripper base 72, a base driving mechanism 73, a gripper beam 74, a horizontal guide rail 75 and a beam driving mechanism 76. The horizontal guide rail 75 is fixedly connected to the frame 1 along the Y direction and is located above the battery tray transplanting area 8, the cache table 5 and the battery cell NG area 6. The gripper beam 74 is slidably connected to the horizontal guide rail 75, and the gripper beam 74 is driven to reciprocate along the Y direction by the beam driving mechanism 76. The gripper beam 74 is arranged along the X direction, and the gripper base 72 is slidably connected to the gripper beam 74, and the gripper base 72 is driven to reciprocate along the X direction by the base driving mechanism 73. The gripper 71 has two grippers, and both grippers 71 are connected to the gripper base 72 in a liftable manner.

[0055] During operation, the two grippers 71 can be driven to move in the X and Y directions through the base driving mechanism 73 and the beam driving mechanism 76. Combined with the ability to lift and lower the grippers 71, three-way movement can ultimately be achieved covering the speed chain 2, the cell tray transplanting area 8, the cache table 5 and the cell NG area 6.

[0056] Among them, the beam driving mechanism 76 is an electric linear slide, the motor of the electric linear slide is fixed to the horizontal guide rail 75, the screw rod of the electric linear slide is rotatably connected in the horizontal guide rail 75, and is connected to the output rod of its motor, the nut of the electric linear slide is threadedly connected to the screw rod, and is fixedly connected to the gripper beam 74 through the slide of the electric linear slide.

[0057] The base driving mechanism 73 is also an electric linear slide, the motor of which is fixed to the gripper beam 74, the screw of which is rotatably connected in the gripper beam 74 and connected to the output rod of the motor, the nut of which is threadedly connected to the screw, and is fixedly connected to the gripper base 72 through the slide of the electric linear slide.

[0058] As for the lifting and lowering of the gripper, a lifting electric cylinder 77 arranged along the Z direction is installed on the gripper base 72, the cylinder body of the lifting electric cylinder 77 is fixedly installed on the gripper base 72, and a flat plate is fixedly installed on the cylinder rod of the lifting electric cylinder 77, and the two grippers 71 are respectively connected to the gripper base 72 through lifting cylinders 78 arranged along the Z direction.

[0059] In this way, the two grippers can be lifted up and down as a whole under the drive of the lifting electric cylinder, and the lifting cylinder can make the two grippers have one backup and one use, thereby ensuring that one of the grippers is clamped with a qualified product during practical use, so that when the qualified product is needed, it can be quickly retrieved.

[0060] The above parts work together according to the following process:

[0061] When a battery tray 3 is transported on the speed chain 2, the OCV detection mechanism 4 starts to perform OCV detection on the battery cells on the battery tray 3; specifically, the Z-direction driving mechanism 43 and the Y-direction driving mechanism 46 can drive the detection heads 41 to move in the Y and Z directions, and then complete the OCV detection of the battery cells on the battery tray 3 from top to bottom.

[0062] When defective products, i.e. NG materials, are detected for the first time, the transfer mechanism 9 is started to transfer the cell tray 3 to the cell tray transfer area 8; specifically, the cell tray can be lifted up by the lifting platform 911, and the first feeding roller 913 can be rotated to move the cell tray out of the speed chain 2 along the Y direction and received by the fixed transfer platform 92.

[0063] The NG material on the battery cell tray 3 is grabbed by the NG gripper 7 to the battery cell NG area 6, and the qualified products are grabbed and placed in the buffer table 5; specifically, the battery cell transfer can be achieved in the battery cell tray transfer area 8, the buffer table 5 and the battery cell NG area 6 through the three-way movement of the gripper 71.

[0064] The transplanting mechanism 9 transports in reverse to transfer the battery cell tray 3 from the battery cell tray transplanting area 8 to the double-speed chain 2, and the double-speed chain 2 removes the empty battery cell tray 3.

[0065] Continue to perform OCV testing on the battery tray 3 transported by the double-speed chain 2. When NG material is detected again, handle it according to the following two situations respectively until all the batteries to be tested have completed OCV testing:

[0066] Case 1: If the number of NG materials is less than or equal to the number of qualified materials, the NG gripper 7 grabs the NG materials on the battery tray 3 to the battery NG area 6, and grabs the qualified products in the buffer table 5 and puts them into the buffer table 5, and the double-speed chain 2 removes the empty and full battery trays 3;

[0067] Case 2: If the quantity of NG materials is greater than the quantity of qualified materials, the transplanting mechanism 9 is started to transfer the battery tray 3 to the battery tray transplanting area 8, the NG gripper 7 grabs the NG materials on the battery tray 3 to the battery NG area 6, and grabs the qualified products and puts them into the buffer table 5; the transplanting mechanism 9 transports in the reverse direction to transfer the battery tray 3 from the battery tray transplanting area 8 to the double-speed chain 2, and the double-speed chain 2 removes the empty battery tray 3.

[0068] There are many specific implementation ways of the present invention. The above is only the preferred implementation mode of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention. These improvements should also be regarded as the protection scope of the present invention.

Claims

1. A battery cell OCV testing line with an NG replacement mechanism, characterized in that: It comprises a frame (1), and an OCV detection mechanism (4), a buffer table (5), an NG gripper (7), and a transplanting mechanism (9) connected to the frame (1); The battery cell OCV testing line further comprises a double-speed chain (2) penetrating the frame (1) along the X direction, a battery cell tray (3) is transported via the double-speed chain (2), a plurality of battery cell slots are provided on the battery cell tray (3), and an OCV testing mechanism (4) is used to perform OCV testing on the transported battery cells; The cache table (5) is fixedly mounted on the frame (1) and is located beside the speed chain (2). The cache table (5) is also provided with a plurality of battery cell slots; A cell tray transfer area (8) is provided between the buffer station (5) and the double-speed chain (2), and the transfer mechanism (9) is located between the double-speed chain (2) and the cell tray transfer area (8), and the cell tray is transferred between the double-speed chain (2) and the cell tray transfer area through the transfer mechanism (9); A battery cell NG area (6) is also provided beside the buffering table (5); the NG gripper (7) is connected to the frame (1); and the NG gripper (7) has a Y-direction motion range covering the speed chain (2), the battery cell tray transfer area (8), the buffering table (5), and the battery cell NG area (6).

2. A battery cell OCV testing line with an NG replacement mechanism according to claim 1, characterized in that: The OCV detection mechanism (4) comprises a detection head (41), a detection head base plate (42), a Z-direction drive mechanism (43), a detection head substrate (44), a Y-direction guide rail (45) and a Y-direction drive mechanism (46); the Y-direction guide rail (45) is fixedly connected to the frame (1) along the Y-direction, and one end of the Y-direction guide rail (45) extends above the speed chain (2); the detection head substrate (44) is slidably connected to the Y-direction guide rail (45), and the detection head substrate (44) is driven to reciprocate along the Y-direction by the Y-direction drive mechanism (46); the detection head (41) has a plurality of detection heads, and all of them are vertically mounted on the detection head base plate (42); the detection head base plate (42) is connected to the detection head substrate (44) via the Z-direction drive mechanism (43), and the detection head base plate (42) is driven to reciprocate along the Z-direction by the Z-direction drive mechanism (43).

3. The battery cell OCV detection line with NG replacement mechanism according to claim 1, characterized in that: The transplanting mechanism (9) comprises a lifting platform (91) and a fixed platform (92); The lifting platform (91) is arranged below the double-speed chain (2), and comprises a lifting platform (911), a platform driving mechanism (912), and a plurality of first feeding rollers (913). The lifting platform (911) is connected to the frame (1) via the platform driving mechanism (912), so that the lifting platform (911) is driven by the platform driving mechanism (912) to rise above the double-speed chain (2) or to fall below the double-speed chain (2). The axis of the first feeding roller (913) is arranged along the X direction, and is rotatably connected to the lifting platform (911). The first feeding roller (913) is driven to rotate by a first rotating power source. The fixed transfer platform (92) includes a fixed table plate (921) and a plurality of second feeding rollers (922); the fixed table plate (921) is fixedly mounted on the frame and is arranged between the buffer table (5) and the double-speed chain (2); the axis of the second feeding roller (922) is arranged along the X direction and is rotatably connected to the fixed table plate (921); the second feeding roller (922) is driven to rotate by a second rotating power source; the top of the second feeding roller (922) is higher than the double-speed chain (2).

4. The battery cell OCV detection line with NG replacement mechanism according to claim 1, characterized in that: The NG gripper (7) comprises a gripper (71), a gripper base (72), a base driving mechanism (73), a gripper crossbeam (74), a horizontal guide rail (75) and a crossbeam driving mechanism (76); the horizontal guide rail (75) is fixedly connected to the frame (1) along the Y direction and is located above the cell tray transplanting area (8), the buffer table (5) and the cell NG area (6); the gripper crossbeam (74) is slidably connected to the horizontal guide rail (75) and is driven by the crossbeam driving mechanism (76) to reciprocate along the Y direction; the gripper crossbeam (74) is arranged along the X direction; the gripper base (72) is slidably connected to the gripper crossbeam (74) and is driven by the base driving mechanism (73) to reciprocate along the X direction; the gripper (71) has two grippers, both of which are connected to the gripper base (72) in a liftable manner.

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