Battery cell OCV testing mechanism

Abstract

The utility model relates to the technical field of battery cell OCV testing, in particular to a battery cell OCV testing mechanism which comprises a plurality of limiting assemblies arranged on a conveying belt, each limiting assembly comprises four limiting blocks fixed to the conveying belt, the top of each limiting block is provided with a containing groove used for containing a battery cell, and each limiting block is provided with a clamping groove used for clamping the battery cell. And an inclined surface is arranged on the limiting block and is positioned above the placing groove. According to the utility model, the battery cell can be limited through the limiting assembly, so that the displacement of the battery cell in the process that the probe touches the battery cell is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cell OCV testing, in particular to a cell OCV testing mechanism. Background Art

[0002] OCV testing is the testing of the open circuit voltage, AC internal resistance, and housing voltage of a single cell, which is an important part of the battery production process. It is required to achieve an OCV accuracy of 0.1 mV and a housing voltage accuracy of 1 mV, and the sorting of cells is realized through OVC testing. The full name of OCV is (open circuit voltage) open circuit voltage. OCV testing mainly measures the battery characteristics by pressing the probes connected to the voltage tester and the internal resistance tester on the positive and negative electrode tabs of the soft-pack battery. In the current OCV testing, after the cells are conveyed to the testing station by the conveyor, the probes on the testing mechanism are brought into contact with the electrodes of the cells to detect the cell characteristics; however, there is no component on the conveyor to limit the cells, so that the probes touch the cells during the detection of the cells, and the cells are likely to shift during the touching process, and the cells are likely to fall off during the conveying process. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a cell OCV testing mechanism, which can limit the cells through a limiting component.

[0004] The utility model is realized by adopting the following technical solutions: a cell OCV testing mechanism includes a plurality of groups of limiting components arranged on a conveyor belt. The limiting component includes four limiting blocks fixed on the conveyor belt. The top of the limiting block has a placement groove for placing the cells, and the limiting block has an inclined surface above the placement groove.

[0005] Preferably, the bottom of the placement groove is made of rubber material.

[0006] Preferably, a testing component is arranged at the rear side of the conveyor belt. The testing component includes a base fixed at the rear side of the conveyor belt. An installation plate is arranged on the base. A three-axis cylinder is fixed on the installation plate. Two installation blocks are fixed on the push block of the three-axis cylinder, and probes are fixed on the installation blocks.

[0007] Preferably, the installation plate is driven by a linear module.

[0008] Preferably, the installation plate is driven by a driving component; the driving component includes an installation seat with an installation groove at the top. The installation seat is fixed on the base; a lead screw is arranged in the installation groove. The lead screw is driven by a motor; a sliding block is installed on the lead screw. The upper end of the sliding block passes through the installation groove and is fixed to the installation plate.

[0009] Preferably, it further includes a test instrument, which is electrically connected to the probe; the test instrument is fixed on a placement platform, and support columns are fixed at the four corners of the bottom of the placement platform; the base is located between the four support columns.

[0010] Preferably, in each group of limit components, one of the limit blocks close to the test component has an RFID radio frequency tag on the side close to the test component, and an RFID radio frequency device cooperating with the RFID radio frequency tag is fixed on the push block of the three-axis cylinder through a fixing frame.

[0011] Preferably, a scanning gun is fixed on one side of the conveyor belt through a mounting frame.

[0012] Advantages of the present utility model:

[0013] (1) The present utility model provides an embodiment. When the battery cell is placed on the limit blocks, the four limit blocks are located at the four corners of the battery cell, so that the battery cell can be better limited; when the battery cell is placed in the placement groove, the inclined surface can play a guiding role to facilitate the battery cell to slide into the placement groove.

[0014] (2) In an embodiment of the present utility model, the bottom of the placement groove is made of rubber material, so that it can play a buffering role for the battery cell and avoid damaging the battery cell.

[0015] (3) In an embodiment of the present utility model, the three-axis cylinder can drive the probe to move forward to the battery cell for testing.

[0016] The present utility model can limit the battery cell through the limit components, and avoid the displacement of the battery cell during the process of the probe touching the battery cell. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the limit block.

[0018] Figure 2 is a schematic structural diagram of the conveyor belt.

[0019] Figure 3 is a schematic structural diagram of the test component.

[0020] Figure 4 is a schematic structural diagram of the driving member.

[0021] Figure 5 is a schematic structural diagram of the test instrument. Detailed Embodiment

[0022] The present utility model will be further described below with reference to the drawings.

[0023] As Figures 1 to 2, this utility model provides an embodiment: a cell OCV testing mechanism, which includes multiple groups of limiting components arranged on a conveyor belt 1. The cell 100 can be limited by the limiting components; the limiting components include four limiting blocks 2 fixed on the conveyor belt 1. When the cell 100 is placed on the limiting blocks 2, the four limiting blocks 2 are located at the four corners of the cell 100, enabling better limitation of the cell 100; the top of the limiting block 2 has a placement groove 21 for placing the cell 100, and the limiting block 2 has an inclined surface 22 above the placement groove 21. When the cell 100 is placed into the placement groove 21, the inclined surface 22 can play a guiding role to facilitate the cell 100 to slide into the placement groove 21.

[0024] In one embodiment of this utility model, the bottom of the placement groove 21 is made of rubber material, which can play a buffering role for the cell 100 and avoid damaging the cell 100.

[0025] Such as Figure 3 , in one embodiment of this utility model, a testing component 3 is arranged at the rear side of the conveyor belt 1. The cell 100 can be subjected to OCV testing through the testing component 3; the testing component 3 includes a base 31 fixed at the rear side of the conveyor belt 1, an installation plate 32 is arranged on the base 31, and a three-axis cylinder 33 is fixed on the installation plate 32. The model of the three-axis cylinder 33 can be tcl20x80s, but is not limited thereto. The three-axis cylinder 33 can drive the probe 35 to move forward to the cell 100 for testing; two installation blocks 34 are fixed on the push block of the three-axis cylinder 33, and the probe 35 is fixed on the installation blocks 34.

[0026] In this embodiment, a cell 100 is placed on each group of limiting components. When the conveyor belt 1 drives the cell 100 to move in front of the probe 35, the conveyor belt 1 pauses. The three-axis cylinder 33 drives the installation block 34 to move forward, thereby driving the probe 35 to move forward to the cell 100 for testing. After the testing is completed, the conveyor belt 1 starts. When the next cell 100 moves in front of the probe 35, it pauses, and so on.

[0027] In one embodiment of this utility model, the installation plate 32 is driven by a linear module 4. The model of the linear module 4 is pth14-l10, but is not limited thereto. The linear module 4 can drive the installation plate 32 to move, thereby driving the three-axis cylinder 33 to move, and further driving the probe 35 to move.

[0028] In this embodiment, a battery cell 100 is placed every two groups of limiting components. When the conveyor belt 1 drives the battery cell 100 and is about to move it in front of the probe 35, the three-axis cylinder 33 drives the probe 35 to move forward, so that when the battery cell 100 moves in front of the probe 35, the probe 35 can just touch the battery cell 100. The conveyor belt 1 does not stop and continues to drive the battery cell 100 to move. At the same time, the linear module 4 drives the three-axis cylinder 33 to move, so that the battery cell 100 is tested during the movement; after the test is completed, the three-axis cylinder 33 retracts, and the linear module 4 drives the three-axis cylinder 33 to return to continue testing the next battery cell 100.

[0029] In this embodiment, in order to improve the accuracy, a through-beam sensor can be arranged on the conveyor belt 1. When the through-beam sensor senses the battery cell 100, the three-axis cylinder 33 drives the probe 35 to move forward, so that when the battery cell 100 moves in front of the probe 35, the probe 35 can just touch the battery cell 100.

[0030] As Figure 4 , in an embodiment of the present utility model, the mounting plate 32 is driven by a driving member 5. The driving member 5 can drive the mounting plate 32 to move, thereby driving the three-axis cylinder 33 to move, and further driving the probe 35 to move. The driving member 5 includes a mounting seat 52 with a mounting groove 51 at the top. The mounting seat 52 is fixed on the base 31; a lead screw 53 is arranged in the mounting groove 51. The lead screw 53 is driven by a motor 54; a sliding block 55 is mounted on the lead screw 53. The upper end of the sliding block 55 passes through the mounting groove 51 and is fixedly connected to the mounting plate 32. The motor 54 can drive the lead screw 53 to rotate, thereby driving the sliding block 55 to move, driving the mounting plate 32 to move, driving the three-axis cylinder 33 to move, and further driving the probe 35 to move.

[0031] In this embodiment, a battery cell 100 is placed every two groups of limiting components. When the conveyor belt 1 drives the battery cell 100 and is about to move it in front of the probe 35, the three-axis cylinder 33 drives the probe 35 to move forward, so that when the battery cell 100 moves in front of the probe 35, the probe 35 can just touch the battery cell 100. The conveyor belt 1 does not stop and continues to drive the battery cell 100 to move. At the same time, the driving member 5 drives the three-axis cylinder 33 to move, so that the battery cell 100 is tested during the movement; after the test is completed, the three-axis cylinder 33 retracts, and the driving member 5 drives the three-axis cylinder 33 to return to continue testing the next battery cell 100.

[0032] In this embodiment, in order to improve the accuracy, a through-beam sensor can be arranged on the conveyor belt 1. When the through-beam sensor senses the battery cell 100, the three-axis cylinder 33 drives the probe 35 to move forward, so that when the battery cell 100 moves in front of the probe 35, the probe 35 can just touch the battery cell 100.

[0033] As Figure 5 , in an embodiment of the present utility model, it further includes a test instrument 6. The model of the test instrument 6 can be BT4560, but is not limited thereto. The test instrument 6 is electrically connected to the probe 35 so that test data can be displayed on the test instrument 6. The test instrument 6 is fixed on a placement platform 7, and support columns 8 are fixed at the four corners of the bottom of the placement platform 7. The base 31 is located between the four support columns 8.

[0034] As Figure 2 , in an embodiment of the present utility model, a barcode scanner 11 is fixed to one side of the conveyor belt 1 through a mounting frame 10. The model of the barcode scanner 11 can be sr-652, but is not limited thereto. The battery cell 100 has a two-dimensional code. By scanning the two-dimensional code with the barcode scanner 11, the information of the battery cell 100 can be uploaded to local storage.

[0035] As Figure 1 、 Figure 3 , in an embodiment of the present utility model, in each group of limiting components, one of the limiting blocks 2 close to the test component 3 has an RFID radio frequency tag 23 on the side surface close to the test component 3. An RFID radio frequency reader 9 that cooperates with the RFID radio frequency tag 23 is fixed to the push block of the three-axis cylinder 33 through a fixing frame. The three-axis cylinder 33 drives the probe 35 to move forward to test the battery cell 100. At this time, the information of the battery cell 100 uploaded to local storage by the barcode scanner is written into the RFID radio frequency tag 23 through the RFID radio frequency reader 9, which is convenient for subsequent confirmation of the battery cell 100.

[0036] The conveyor belt, three-axis cylinder, linear module, motor, lead screw, photoelectric sensor, RFID radio frequency tag, RFID radio frequency reader, barcode scanner, and test instrument in the present utility model are all prior arts, and those skilled in the art have been able to clearly understand them, so no detailed description will be given here. Moreover, what the present utility model protects is the structural characteristics of a battery cell OCV test mechanism.

[0037] The above are only the preferred embodiments of the present utility model, and should not be construed as limitations to this application. All equivalent changes and modifications made according to the scope of the patent application of the present utility model shall fall within the scope covered by the present utility model.

Claims

1. A battery cell OCV testing mechanism, characterized in that: It comprises a plurality of groups of limiting components arranged on a conveyor belt, wherein the limiting components comprise four limiting blocks fixed on the conveyor belt, the tops of the limiting blocks are provided with placement grooves for placing battery cells, and the limiting blocks are provided with inclined surfaces above the placement grooves.

2. A battery cell OCV testing mechanism according to claim 1, characterized in that: The bottom of the placement groove is made of rubber material.

3. A battery cell OCV testing mechanism according to claim 1, characterized in that: A test assembly is arranged on the rear side of the conveyor belt, and the test assembly includes a base fixed on the rear side of the conveyor belt, a mounting plate is arranged on the base, a three-axis cylinder is fixed on the mounting plate, two mounting blocks are fixed on the push block of the three-axis cylinder, and a probe is fixed on the mounting block.

4. A battery cell OCV testing mechanism according to claim 3, characterized in that: The mounting plate is driven by a linear module.

5. A battery cell OCV testing mechanism according to claim 3, characterized in that: The mounting plate is driven by a driving member; the driving member includes a mounting seat with a mounting groove on the top, and the mounting seat is fixed on the base; a screw rod is arranged in the mounting groove, and the screw rod is driven by a motor; a sliding block is installed on the screw rod, and the upper end of the sliding block passes through the mounting groove and is fixedly connected to the mounting plate.

6. A battery cell OCV testing mechanism according to any one of claims 3 to 5, characterized in that: It also includes a testing instrument, which is electrically connected to the probe; the testing instrument is fixed on a placement platform, and support columns are fixed at the four corners of the bottom of the placement platform; the base is located between the four support columns.

7. A battery cell OCV testing mechanism according to any one of claims 3 to 5, characterized in that: In each set of limit assemblies, one of the limit blocks close to the test assembly has an RFID tag on one side of the limit block close to the test assembly, and an RFID radio frequency device matching the RFID tag is fixed on the push block of the three-axis cylinder via a fixing frame.

8. A battery cell OCV testing mechanism according to any one of claims 1 to 5, characterized in that: A scanning gun is fixed on one side of the conveyor belt via a mounting frame.

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