OCV test integrated equipment

Abstract

The utility model relates to an OCV test, and especially relates to an OCV test integrated device. Comprising a gantry frame mounted above a battery cell conveying line; the test probe assembly is used for carrying out battery cell code scanning on the battery cell; the OCV tester is electrically connected with the test probe assembly and is used for carrying out OCV test on the battery cells after code scanning of the test probe assembly and positioning the positions of NG battery cells; the NG carrying assembly is used for taking out the NG battery cell and supplementing the OK battery cell; a direction adjusting assembly which is installed on the gantry frame, is connected with the test probe assembly and the NG carrying assembly, and is used for driving the test probe assembly and the NG carrying assembly to move; and the control part is electrically connected with the NG carrying assembly, the OCV tester and the direction adjusting assembly, and controls the direction adjusting assembly to drive the test probe assembly and the NG carrying assembly to move in sequence. The equipment highly integrates the functions of battery cell code scanning, OCV testing, NG caching, OK material supplementing, OCV first workpiece inspection and the like, the efficiency of the production process is improved, and the occupied area of the equipment is reduced.

Description

An integrated OCV testing device Technical Field

[0001] This utility model relates to OCV testing, and more particularly to an integrated OCV testing device. Background Technology

[0002] In the process of turning battery cells into modules, the cells need to be coded. Open Circuit Voltage (OCV) testing is a crucial step in battery performance testing, involving a series of necessary process steps such as rejecting NG (Not Acceptable) cells after coding and OCV testing, and replenishing materials after rejecting NG cells. Previously, each stage—cell coding, OCV testing, NG buffering, OK replenishment, and OCV first-piece inspection—was a separate station. This resulted in a lengthy production line layout, low production efficiency per station, and high equipment costs. Therefore, a solution is urgently needed.

[0003] The above content is only used to help understand the technical solution of this utility model and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an integrated OCV testing device that highly integrates functions such as cell scanning, OCV testing, NG buffering, OK replenishment, and OCV first article inspection. This not only improves the efficiency of the production process but also reduces the equipment footprint and the overall line cost.

[0005] To achieve the aforementioned objective, the technical solution of this utility model is as follows: an integrated OCV testing device, comprising:

[0006] The gantry frame is installed above the cell delivery line;

[0007] Test probe assembly, used to scan the battery cell code;

[0008] The OCV tester is electrically connected to the test probe assembly and is used to perform OCV testing on the battery cells after the test probe assembly has scanned the code, and to locate the position of the NG battery cells.

[0009] NG handling assembly, used to remove NG cells and replace them with OK cells;

[0010] A direction adjustment component is mounted on the gantry frame and connected to both the test probe component and the NG transport component, for driving the test probe component and the NG transport component to move;

[0011] The control unit is electrically connected to the NG transport assembly, the OCV tester, and the direction adjustment assembly. Based on the detection results of the battery cell by the OCV tester, it controls the direction adjustment assembly to drive the test probe assembly and the NG transport assembly to move sequentially.

[0012] Preferably, the test probe assembly includes a barcode scanner, a mounting bracket, and a test probe; the mounting bracket is connected to the direction adjustment assembly; both the barcode scanner and the test probe are mounted on the mounting bracket and electrically connected to the OCV tester, and the barcode scanner is used to scan the battery cells on the battery cell conveying line; the test probe is used to perform OCV testing on the battery cells on the battery cell conveying line.

[0013] Preferably, the test probes are mounted on a probe plate on the fixture; the fixture has at least two rows of probe plates, and each probe plate has at least 12 test probes.

[0014] Preferably, the orientation adjustment assembly includes a Y-axis drive unit that reciprocates along the Y-axis direction of the gantry frame, an X-axis drive unit that reciprocates along the X-axis direction of the gantry frame, and a Z-axis drive unit that reciprocates along the Z-axis direction of the gantry frame; the Y-axis drive unit is connected to the gantry frame, the X-axis drive unit is connected to the Y-axis drive unit, the Z-axis drive unit is connected to the X-axis drive unit, and the Z-axis drive unit is respectively connected to the NG transport assembly and the test probe assembly.

[0015] Preferably, the NG handling assembly includes a rotary cylinder that rotates in a vertical plane and grippers for holding the battery cells; the top of the rotary cylinder is connected to the Z-axis drive unit, and the bottom is connected to the NG grippers.

[0016] Preferably, the Y-axis drive unit includes a synchronizing element, a guide rail, and a rack module; the guide rail and rack module are respectively installed on horizontal bars on both sides of the gantry frame; the rack module is connected to the X-axis drive unit and drives the X-axis drive unit to reciprocate along the length of the guide rail; the two ends of the synchronizing element are respectively connected to the guide rail and the rack module.

[0017] Preferably, the X-axis drive unit includes an X-axis horizontal rod, an X-axis drive motor, and an X-axis horizontal cable chain; the two ends of the X-axis horizontal rod are slidably connected to the guide rail and the rack module, respectively; the X-axis drive motor and the X-axis horizontal cable chain are both mounted on the X-axis horizontal rod, and the X-axis drive motor drives the X-axis horizontal cable chain to move the Z-axis drive unit back and forth along the length direction of the X-axis horizontal rod.

[0018] Preferably, the Z-axis drive unit includes a first Z-axis drive motor, a first vertical connecting plate, and a first vertical cable chain; the first Z-axis drive motor is connected to one side of the X-axis horizontal cable chain and to the first vertical cable chain; the bottom of the first vertical connecting plate is connected to a fixed frame, and one side of the first vertical connecting plate is connected to the first vertical cable chain; the first Z-axis drive motor drives the first vertical cable chain to move the first vertical connecting plate back and forth in the vertical direction.

[0019] Preferably, the Z-axis drive unit further includes a second Z-axis drive motor, a second vertical connecting plate, and a second vertical cable chain; the second Z-axis drive motor is connected to the other side of the X-axis horizontal cable chain and is connected to the second vertical cable chain; the second vertical connecting plate is connected to a rotary cylinder and is connected to the second vertical cable chain, and the second Z-axis drive motor drives the second vertical cable chain to move the second vertical connecting plate back and forth in the vertical direction.

[0020] Preferably, the control unit includes a switching module; the switching module is electrically connected to the OCV tester, rack module, X-axis drive motor, first Z-axis drive motor, second Z-axis drive motor and rotary cylinder, and controls the rack module, X-axis drive motor, first Z-axis drive motor and second Z-axis drive motor and rotary cylinder to run sequentially according to the OCV tester's detection results of the battery cell.

[0021] The beneficial effects of this utility model are reflected in:

[0022] The equipment provided by this utility model features a gantry frame on the battery cell conveying line, with a direction adjustment component installed on the gantry frame. This component drives the test probe group and NG (Not From Good) handling component, sequentially performing functions such as battery cell scanning, OCV (Optical Characteristic) testing, NG buffering, OK (Good From Good) replenishment, and OCV first-article inspection on the battery cells on the conveying line. This not only improves production efficiency but also reduces the equipment footprint and overall line cost. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the structure of this utility model;

[0024] Figure 2 is a top view of the structure of this utility model;

[0025] Figure 3 is a rear-view axonometric view of this utility model;

[0026] Figure 4 is a schematic diagram of the probe testing component structure of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Gantry frame; 20. Y-axis drive unit; 21. Guide rail; 22. Rack module; 30. X-axis drive unit; 31. X-axis horizontal bar; 32. X-axis horizontal cable chain; 40. Z-axis drive unit; 41. First Z-axis drive motor; 42. First vertical connecting plate; 43. First vertical cable chain; 50. Test probe assembly; 51. Barcode scanner; 52. Fixture; 53. Test probe; 60. NG handling assembly; 61. Second vertical connecting plate; 62. Rotary cylinder; 63. NG gripper; 70. OCV tester; 80. Control unit. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0030] Example

[0031] Please refer to Figures 1 to 4: This utility model provides an integrated OCV testing device, including:

[0032] The gantry frame 10 is installed above the cell delivery line.

[0033] The test probe assembly 50 is used to scan the battery cells on the battery cell conveyor line. The battery cell conveyor line is generally configured as a magnetic levitation line to transport the tray containing the battery cells to the working position.

[0034] The OCV tester 70 is electrically connected to the test probe assembly 50 and is used to perform OCV testing on the battery cells after scanning by the test probe assembly 50, and to locate the NG battery cells. In this solution, NG battery cells include battery cells with abnormal scanning display, battery cells with abnormal OCV test, and battery cells with inconsistent polarity among multiple battery cells in the same batch.

[0035] The NG handling assembly 60 is used to remove NG cells and replace them with OK cells. In this solution, OK cells include cells that show no abnormalities in barcode scanning, OCV testing, and polarity.

[0036] The direction adjustment component is mounted on the gantry frame 10 and is connected to both the test probe component 50 and the NG transport component 60. It is used to move the test probe component 50 and the NG transport component 60 to the location of the target cell.

[0037] The control unit 80 is electrically connected to the NG transport assembly 60, the OCV tester 70, and the direction adjustment assembly. Based on the detection results of the battery cell by the OCV tester 70, it controls the direction adjustment assembly to drive the test probe assembly 50 and the NG transport assembly 60 to move sequentially.

[0038] By setting up a gantry frame 10 and installing a direction adjustment component on it, the control unit 80 controls the OCV tester 70, and the direction adjustment component drives the test probe component 50 and the NG handling component 60 to sequentially perform cell scanning, OCV testing, NG buffering, OK replenishment, and OCV first-piece inspection on the cell conveyor line. This not only improves production efficiency but also reduces equipment footprint and overall line cost.

[0039] The gantry frame 10 mainly consists of four vertical uprights and four horizontal bars. The vertical uprights are arranged in pairs and are set on both sides of the cell conveying line. Each pair of vertical uprights has a horizontal bar at its top. The remaining two horizontal bars of the four horizontal bars cross the cell conveying line and connect to the two adjacent vertical uprights.

[0040] The direction adjustment assembly mainly consists of a Y-axis drive unit 20, an X-axis drive unit 30, and a Z-axis drive unit 40.

[0041] The Y-axis drive unit 20 is connected to the gantry frame 10, the X-axis drive unit 30 is connected to the Y-axis drive unit 20, the Z-axis drive unit 40 is connected to the X-axis drive unit 30, and the Z-axis drive unit 40 is connected to the NG transport assembly 60 and the test probe assembly 50 respectively.

[0042] In practical applications, the Y-axis drive unit 20 reciprocates along the Y-axis direction of the gantry frame 10, the X-axis drive unit 30 reciprocates along the X-axis direction of the gantry frame 10, and the Z-axis drive unit 40 reciprocates along the Z-axis direction of the gantry frame 10. Thus, the direction adjustment component can drive the NG transport component 60 and the test probe component 50 to reciprocate along the X-axis, Y-axis, and Z-axis directions of the gantry frame 10.

[0043] The Y-axis drive unit 20 mainly consists of a synchronizer, a guide rail 21, and a rack module 22. The synchronizer includes a synchronizer, a synchronizer shaft, and a reducer.

[0044] Guide rail 21 is mounted on a horizontal bar on one side of gantry frame 10, and rack module 22 is mounted on a horizontal bar on the other side of gantry frame 10. Rack module 22 is connected to X-axis drive unit 30 and drives X-axis drive unit 30 to reciprocate along the length of guide rail 21. Reducer is mounted on rack module 22, synchronizer is mounted on guide rail 21, and the two ends of synchronizer shaft are connected to reducer and synchronizer respectively.

[0045] With this configuration, when the Y-axis drive unit 20 drives the X-axis drive unit 30 to move along the Y-axis direction of the gantry frame 10, the movement speed on both sides of the X-axis drive unit 30 can be kept consistent.

[0046] In practical applications, the Y-axis drive unit 20 adopts a long-stroke gear and rack module available on the market. This drive structure has a high load capacity, which enables the Y-axis drive unit 20 to stably drive the X-axis drive unit 30 to move, meeting actual production needs.

[0047] The X-axis drive unit 30 includes an X-axis horizontal bar 31, an X-axis drive motor, and an X-axis horizontal cable chain 32.

[0048] One end of the X-axis horizontal rod 31 is slidably connected to the guide rail 21, and the other end is connected to the rack module 22; the X-axis drive motor and the X-axis horizontal drag chain 32 are both mounted on the X-axis horizontal rod 31, and the X-axis drive motor drives the X-axis horizontal drag chain 32 to drive the Z-axis drive unit 40 to reciprocate along the length direction of the X-axis horizontal rod 31.

[0049] The Z-axis drive unit 40 includes a first Z-axis drive motor 41, a first vertical connecting plate 42, and a first vertical drag chain 43.

[0050] The first Z-axis drive motor 41 is connected to one side of the X-axis horizontal cable chain 32 and to the first vertical cable chain 43. The bottom of the first vertical connecting plate 42 is connected to the fixing frame 52, and one side of the first vertical connecting plate 42 is connected to the first vertical cable chain 43. The first Z-axis drive motor 41 drives the first vertical cable chain 43 to move the first vertical connecting plate 42 back and forth in the vertical direction.

[0051] The Z-axis drive unit 40 also includes a second Z-axis drive motor, a second vertical connecting plate 61, and a second vertical cable chain. The second Z-axis drive motor is connected to the other side of the X-axis horizontal cable chain 32 and to the second vertical cable chain; the second vertical connecting plate 61 is connected to the rotary cylinder 62 and to the second vertical cable chain, and the second Z-axis drive motor drives the second vertical cable chain to move the second vertical connecting plate 61 back and forth in the vertical direction.

[0052] The test probe assembly 50 mainly consists of a barcode scanner 51, a mounting bracket 52, and a test probe 53.

[0053] The mounting bracket 52 is connected to the direction adjustment assembly. The barcode scanner 51 and the test probe 53 are both mounted on the mounting bracket 52 and are electrically connected to the OCV tester 70. The barcode scanner 51 is used to scan the barcodes of the cells on the cell conveying line. The test probe 53 is used to perform OCV testing on the cells on the cell conveying line.

[0054] Test probes 53 are mounted on probe plates on fixtures 52; fixtures 52 have at least two rows of probe plates, and each probe plate has at least 12 test probes 53.

[0055] The NG handling assembly 60 includes a rotary cylinder 62 that rotates in a vertical plane and a gripper 63 for holding the battery cell; the top of the rotary cylinder 62 is connected to the Z-axis drive unit 40, and the bottom is connected to the NG gripper 63.

[0056] In practical applications, the Y-axis drive unit 20 is used to adjust the position of the NG measuring jaw 63 and the test probe 53 in the Y-axis direction of the gantry frame 10. The X-axis drive unit 30 is used to adjust the position of the NG measuring jaw 63 and the test probe 53 in the X-axis direction of the gantry frame 10. The Z-axis drive unit 40 is used to adjust the position of the NG measuring jaw 63 and the test probe 53 in the Z-axis direction of the gantry frame 10.

[0057] The control unit 80 includes a switching module; the switching module is electrically connected to the OCV tester 70, the rack module 22, the X-axis drive motor, the first Z-axis drive motor 41, the second Z-axis drive motor, and the rotary cylinder 62, and controls the rack module 22, the X-axis drive motor, the first Z-axis drive motor 41, the second Z-axis drive motor, and the rotary cylinder 62 to run sequentially according to the detection results of the battery cell by the OCV tester 70.

[0058] In practical applications, OCV testing is used in the production process:

[0059] Before the OCV testing production line is opened, test probe 53 moves to the position of the first OCV fixture, and the test probe 53 is pressed down, and the OCV tester 70 completes zeroing. Upon initial line opening, the tray containing the battery cells moves to the work position, the barcode scanner 51 scans the battery cells in the tray, and the test probe 53 performs OCV testing on them. After the test is completed, the NG gripper 63 sequentially transfers the tested battery cells to the OK buffer stage, accumulating a buffer of 24 battery cells.

[0060] After the OCV testing and production line is opened, 24 cells to be tested are placed in the cell tray on the cell conveyor line. The magnetic levitation line will transport the tray containing the 24 cells to the tray work position, which is the position of the gantry frame 10. After the Y-axis drive unit 20, X-axis drive unit 30, and Z-axis drive unit 40 adjust the position of the barcode scanner 51, the barcode scanner 51 scans the battery cells in the tray. The barcode scanner 51 can scan 4 battery cells at a time. After scanning, the Y-axis drive unit 20, X-axis drive unit 30, and Z-axis drive unit 40 adjust the position of the test probe 53, and the test probe 53 performs OCV testing on the battery cells. The entire device can test up to 24 battery cells at the same time. The OCV tester 70 tests and identifies NG chips. After the Y-axis drive unit 20, X-axis drive unit 30, and Z-axis drive unit 40 adjust the position of the NG gripper 63 in sequence, the rotary cylinder 62 adjusts the gripping angle of the NG gripper 63, and then the NG gripper 63 removes the NG chip and takes out the OK chip from the OK buffer table. The OK chip is then inserted at the NG chip removal point, and the tray containing the battery cells is then transported to the next station.

[0061] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An integrated OCV testing device, characterized in that, include: A gantry frame (10) is installed above the cell delivery line; a test probe assembly (50) is used to scan the cell codes; an OCV tester (70) is electrically connected to the test probe assembly (50) and is used to perform OCV testing on the cell after scanning by the test probe assembly (50) and locate the position of the NG cell; an NG transport assembly (60) is used to remove the NG cell and replace it with an OK cell; a direction adjustment assembly is installed on the gantry frame (10) and is connected to both the test probe assembly (50) and the NG transport assembly (60) and is used to drive the test probe assembly (50) and the NG transport assembly (60) to move; a control unit (80) is electrically connected to the NG transport assembly (60), the OCV tester (70) and the direction adjustment assembly and controls the direction adjustment assembly to drive the test probe assembly (50) and the NG transport assembly (60) to move sequentially according to the cell detection results of the OCV tester (70).

2. The OCV testing integrated device according to claim 1, characterized in that... The test probe assembly (50) includes a barcode scanner (51), a mounting bracket (52), and a test probe (53); the mounting bracket (52) is connected to the direction adjustment assembly; the barcode scanner (51) and the test probe (53) are both mounted on the mounting bracket (52) and are both electrically connected to the OCV tester (70), and the barcode scanner (51) is used to scan the battery cells on the battery cell conveying line; the test probe (53) is used to perform OCV testing on the battery cells on the battery cell conveying line.

3. An integrated OCV testing device according to claim 2, characterized in that... The test probes (53) are mounted on the probe plate on the fixture (52); the fixture (52) has at least two rows of probe plates, and each probe plate has at least 12 test probes (53).

4. An integrated OCV testing device according to claim 2 or 3, characterized in that... The orientation adjustment assembly includes a Y-axis drive unit (20) that reciprocates along the Y-axis direction of the gantry frame (10), an X-axis drive unit (30) that reciprocates along the X-axis direction of the gantry frame (10), and a Z-axis drive unit (40) that reciprocates along the Z-axis direction of the gantry frame (10). The Y-axis drive unit (20) is connected to the gantry frame (10), and the X-axis drive unit (30) is connected to the Y-axis drive unit (20). The Z-axis drive unit (40) is connected to the X-axis drive unit (30), and the Z-axis drive unit (40) is connected to the NG transport assembly (60) and the test probe assembly (50), respectively.

5. An integrated OCV testing device according to claim 4, characterized in that... The NG handling assembly (60) includes a rotary cylinder (62) that rotates in a vertical plane and an NG gripper (63) for holding the battery cell; the top of the rotary cylinder (62) is connected to the Z-axis drive unit (40), and the bottom is connected to the NG gripper (63).

6. An OCV testing integrated device according to claim 5, characterized in that... The Y-axis drive unit (20) includes a synchronizing element, a guide rail (21), and a rack module (22); the guide rail (21) and the rack module (22) are respectively installed on the horizontal bars on both sides of the gantry frame (10); the rack module (22) is connected to the X-axis drive unit (30) and drives the X-axis drive unit (30) to reciprocate along the length direction of the guide rail (21); the two ends of the synchronizing element are respectively connected to the guide rail (21) and the rack module (22).

7. An integrated OCV testing device according to claim 6, characterized in that... The X-axis drive unit (30) includes an X-axis horizontal rod (31), an X-axis drive motor, and an X-axis horizontal cable chain (32); the two ends of the X-axis horizontal rod (31) are slidably connected to the guide rail (21) and the rack module (22), respectively; the X-axis drive motor and the X-axis horizontal cable chain (32) are both mounted on the X-axis horizontal rod (31), and the X-axis drive motor drives the X-axis horizontal cable chain (32) to drive the Z-axis drive unit (40) to reciprocate along the length direction of the X-axis horizontal rod (31).

8. An integrated OCV testing device according to claim 7, characterized in that... The Z-axis drive unit (40) includes a first Z-axis drive motor (41), a first vertical connecting plate (42), and a first vertical drag chain (43). The first Z-axis drive motor (41) is connected to one side of the X-axis horizontal drag chain (32) and to the first vertical drag chain (43). The bottom of the first vertical connecting plate (42) is connected to the fixing frame (52), and one side of the first vertical connecting plate (42) is connected to the first vertical drag chain (43). The first Z-axis drive motor (41) drives the first vertical drag chain (43) to move the first vertical connecting plate (42) back and forth in the vertical direction.

9. An integrated OCV testing device according to claim 8, characterized in that... The Z-axis drive unit (40) further includes a second Z-axis drive motor, a second vertical connecting plate (61), and a second vertical drag chain; the second Z-axis drive motor is connected to the other side of the X-axis horizontal drag chain (32) and is connected to the second vertical drag chain; the second vertical connecting plate (61) is connected to the rotary cylinder (62) and is connected to the second vertical drag chain, and the second Z-axis drive motor drives the second vertical drag chain to move the second vertical connecting plate (61) back and forth in the vertical direction.

10. An integrated OCV testing device according to claim 9, characterized in that... The control unit (80) includes a switching module; the switching module is electrically connected to the OCV tester (70), rack module (22), X-axis drive motor, first Z-axis drive motor (41), second Z-axis drive motor and rotary cylinder (62), and controls the rack module (22), X-axis drive motor, first Z-axis drive motor (41), second Z-axis drive motor and rotary cylinder (62) to run sequentially according to the detection results of the battery cell by the OCV tester (70).

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