Single machine for testing open-circuit voltage of blade cell and measuring thickness of cell

Abstract

The utility model discloses a single machine table for testing open-circuit voltage of a blade cell and measuring thickness of the cell, which comprises a large mounting plate, and a thickness measuring mechanism is mounted above the large mounting plate through a portal frame; a probe mechanism is mounted on the rear side of the portal frame through a supporting plate; upper-layer sliding table linear guide rails are symmetrically connected to the portion, below the portal frame, of the installation large plate through supporting frames, an upper-layer sliding table air cylinder and a lower-layer sliding table air cylinder are connected to the portion, between the two upper-layer sliding table linear guide rails, of the installation large plate, and an upper sliding table assembly is in driving connection with the upper portion of the upper-layer sliding table air cylinder. The upper sliding table assembly is in sliding fit with the upper-layer sliding table linear guide rail; lower-layer sliding table linear guide rails are connected to the positions, located on the two sides of the lower-layer sliding table air cylinder, of the large installation plate and are lower than the upper-layer sliding table linear guide rails, and a lower sliding table assembly is connected to the upper portion of the lower-layer sliding table air cylinder in a driving mode and is in sliding fit with the lower-layer sliding table linear guide rails. The device can effectively improve the detection efficiency, and is compatible with the detection of blade cells with different sizes and different pole positions.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell testing technology, specifically relating to a single machine for testing the open-circuit voltage of a blade battery cell and measuring the thickness of the battery cell. Background Technology

[0002] As a core component of batteries, the blade cell's open-circuit voltage (OCV) directly reflects the cell's voltage state and internal chemical energy reserves. By detecting the open-circuit voltage, it's possible to determine if the cell has internal defects, such as abnormal self-discharge. If the cell has internal short circuits or other defects, it will lead to increased self-discharge, causing the open-circuit voltage to drop, thus affecting the overall battery performance and lifespan.

[0003] The consistency and stability of the thickness of the blade-shaped battery cells have a significant impact on the performance, safety, and reliability of battery modules and battery packs. During charging and discharging, changes in cell thickness can induce expansion forces. If the thickness is inconsistent, the expansion forces will be unevenly distributed, which may cause an imbalance in the internal structure of the battery module, thereby affecting electrical performance and even causing safety hazards.

[0004] Therefore, open-circuit voltage testing and thickness testing are crucial in the manufacturing process of blade batteries. Currently, the common open-circuit voltage test is performed on a single blade battery cell, which is slow and cannot efficiently accommodate blade batteries of different sizes and with different terminal positions. Utility Model Content

[0005] The purpose of this invention is to provide a single-machine platform for testing the open-circuit voltage and thickness of blade cells, which can effectively improve the testing efficiency and is compatible with the testing of blade cells of different sizes and with different terminal positions.

[0006] To achieve the above objectives, this utility model provides a single-machine platform for testing the open-circuit voltage of a battery cell and measuring its thickness, including a mounting plate, a gantry frame connected above the mounting plate, and a thickness measuring mechanism mounted on the gantry frame.

[0007] A support plate is connected to the rear of the gantry frame, and a probe mechanism is connected to the support plate.

[0008] On the mounting plate, below the gantry frame, there are symmetrical upper slide linear guides connected to the mounting plate. Between the two upper slide linear guides, there are upper slide cylinders and lower slide cylinders. Above the upper slide cylinders, there is an upper slide assembly that is driven and connected. The upper slide assembly slides in cooperation with the upper slide linear guides.

[0009] The mounting plate is connected to the lower slide linear guide rails on both sides of the lower slide cylinder. The lower slide linear guide rails are lower than the upper slide linear guide rails. A lower slide assembly is driven and connected above the lower slide cylinder. The lower slide assembly slides in cooperation with the lower slide linear guide rails.

[0010] As a further embodiment of this utility model: the upper slide assembly includes an upper slide base plate, which slides in cooperation with the upper slide linear guide rail. An upper connector and an upper impact block are provided below the upper slide base plate. The upper connector is connected to the power output end of the upper slide cylinder. An upper limit position is provided on the mounting plate to cooperate with the upper impact block. An upper battery cell platform is provided on the upper surface of the upper slide base plate. An upper proximity switch hole is provided on the upper battery cell platform. Upper fixing blocks are provided around the upper battery cell platform. An upper positioning block is connected to the upper fixing block.

[0011] As a further embodiment of this utility model: the sliding stage assembly includes a sliding stage base plate, which slides in cooperation with the linear guide rail of the lower sliding stage. A lower connector and a lower impact block are provided below the sliding stage base plate. The lower connector is connected to the power output end of the cylinder of the lower sliding stage. A lower limit position is provided on the mounting plate to cooperate with the lower impact block. A lower battery cell platform is provided on the upper surface of the sliding stage base plate. A lower proximity switch hole is provided on the lower battery cell platform. Lower fixing blocks are provided around the lower battery cell platform. A lower positioning block is connected to the lower fixing block.

[0012] As a further embodiment of this utility model: the probe mechanism is provided in two sets, symmetrically connected to the support plate, including a horizontal lead screw module, the power output end of the horizontal lead screw module is connected to a vertical lead screw module, the power output end of the vertical lead screw module is connected to a connecting plate, an adjustment plate is connected to the connecting plate, and a probe is connected to the adjustment plate through an adjustment block.

[0013] As a further embodiment of this utility model: the thickness measuring mechanism includes a fixed plate installed on the gantry frame, a guide shaft and a vertical lifting mechanism connected to the fixed plate, the power output end of the vertical lifting mechanism is located below the fixed plate and connected to a battery cell pressure plate, and a sensor is connected to the side of the battery cell pressure plate through a vertical lifting cylinder.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. The upper slide assembly and the lower slide assembly can alternately test the open circuit voltage and thickness of the blade battery cell, which improves the cycle time and effectively increases production efficiency.

[0016] 2. When checking the open-circuit voltage of the blade battery cell, the function of measuring the thickness of the pad cell is integrated, which raises the threshold for qualified cells and can effectively ensure the consistency of the blade battery cells.

[0017] 3. The upper and lower positioning blocks can accommodate blade cells of different sizes. The horizontal and vertical lead screw modules of the probe mechanism, together with the adjustment plate, can adjust the X, Y, and Z axis three-dimensional orientation of the probe, making it compatible with the detection of blade cells of different sizes and pole positions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a single-machine platform for testing the open-circuit voltage of a battery cell and measuring the thickness of the battery cell according to this utility model.

[0019] Figure 2 This is a structural schematic diagram of the upper sliding table assembly of this utility model.

[0020] Figure 3 This is a structural schematic diagram of the sliding stage assembly of this utility model.

[0021] Figure 4 This is a schematic diagram of the probe mechanism of this utility model.

[0022] Figure 5 This is a schematic diagram of the thickness measuring mechanism of this utility model.

[0023] In the diagram: 1. Mounting plate, 2. Support plate, 3. Gantry frame, 4. Probe mechanism, 5. Thickness measuring mechanism, 6. Upper slide assembly, 7. Upper slide linear guide rail, 8. Support frame, 9. Upper slide cylinder, 10. Lower slide assembly, 11. Lower slide cylinder, 12. Lower slide linear guide rail, 13. Upper limit switch, 14. Lower limit switch, 15. Blade cell;

[0024] 4.1 Horizontal lead screw module; 4.2 Vertical lead screw module; 4.3 Probe; 4.4 Adjusting block; 4.5 Adjusting plate; 4.6 Connecting plate;

[0025] 5.1 Vertical lifting mechanism; 5.2 Guide shaft; 5.3 Fixing plate; 5.4 Battery cell pressure plate; 5.5 Vertical lifting cylinder; 5.6 Sensor.

[0026] 6.1 Upper slide base plate, 6.2 Upper fixing block, 6.3 Upper connecting piece, 6.4 Upper impact block, 6.5 Upper battery cell platform, 6.6 Upper positioning block, 6.7 Upper proximity switch hole;

[0027] 10.1 Lower sliding platform base plate, 10.2 Lower fixing block, 10.3 Lower connecting piece, 10.4 Lower impact block, 10.5 Lower battery cell platform, 10.6 Lower positioning block. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figure 1As shown, the single machine for testing the open circuit voltage of the blade battery cell and measuring the thickness of the battery cell includes a mounting plate 1, a gantry 3 connected above the mounting plate 1, and a thickness measuring mechanism 5 installed on the gantry 3.

[0030] A support plate 2 is connected to the rear side of the gantry frame 3, and a probe mechanism 4 is connected to the support plate 2.

[0031] On the mounting plate 1, below the gantry frame 3, there are symmetrical upper slide linear guide rails 7 connected to the support frame 8. On the mounting plate 1, between the two upper slide linear guide rails 7, there are upper slide cylinders 9 and lower slide cylinders 11. Above the upper slide cylinder 9, there is an upper slide assembly 6 driven and connected. The upper slide assembly 6 slides in cooperation with the upper slide linear guide rails 7.

[0032] On the mounting plate 1, lower slide linear guide rails 12 are connected to both sides of the lower slide cylinder 11. The height of the lower slide linear guide rails 12 is lower than that of the upper slide linear guide rail 7. A lower slide assembly 10 is driven and connected above the lower slide cylinder 11. The lower slide assembly 10 slides in cooperation with the lower slide linear guide rail 12.

[0033] The upper slide linear guide 7 is connected to the mounting plate 1 through the support frame 8. Its height is higher than that of the lower slide linear guide 12, so that the upper slide assembly 6 and the lower slide assembly 10 are staggered vertically. The upper slide assembly 6 and the lower slide assembly 10, together with the probe 4.3 mechanism 4, are used to test the open circuit voltage of the blade cell 15. They can work alternately during use to improve the overall testing efficiency of a single machine.

[0034] In order to stably place blade cells 15 of different sizes, further, such as Figure 1 and Figure 2 As shown, the upper slide assembly 6 includes an upper slide base plate 6.1, which slides in conjunction with the upper slide linear guide rail 7. An upper connector 6.3 and an upper impact block 6.4 are located below the upper slide base plate 6.1. The upper connector 6.3 is connected to the power output end of the upper slide cylinder 9. An upper limit position 13, which mates with the upper impact block 6.4, is provided on the mounting plate 1. An upper battery cell platform 6.5 is provided on the upper surface of the upper slide base plate 6.5. An upper proximity switch hole 6.7 is provided on the upper battery cell platform 6.5. Upper fixing blocks 6.2 are provided around the upper battery cell platform 6.5, and an upper positioning block 6.6 is connected to the upper fixing block 6.2.

[0035] Furthermore, such as Figure 1 and Figure 3As shown, the sliding stage assembly 10 includes a sliding stage base plate 10.1, which slides in cooperation with the lower sliding stage linear guide rail 12. A lower connector 10.3 and a lower impact block 10.4 are provided below the sliding stage base plate 10.1. The lower connector 10.3 is connected to the power output end of the lower sliding stage cylinder 11. A lower limit 14 that cooperates with the lower impact block 10.4 is provided on the mounting plate 1. A lower battery cell platform 6.5 is provided on the upper surface of the sliding stage base plate 10.1. A lower proximity switch hole (blocked by the blade battery cell 15) is provided on the lower battery cell platform 6.5. Lower fixing blocks 10.2 are provided around the lower battery cell platform 6.5. A lower positioning block 6.6 is connected to the lower fixing block 10.2.

[0036] The placement of blade cell 15 as follows Figure 3 As shown, the position distribution of the positioning blocks can adapt to blade cells 15 of different sizes, satisfying the detection of blade cells 15 of different sizes. In addition, the cooperation of the limit and the collision block mechanically positions the running position of the upper slide assembly 6 and the lower slide assembly 10. In actual use, it can be used with the limit sensor to further enhance the position positioning, thereby ensuring the accuracy of detection.

[0037] In order to adapt to different blade cells 15, blade cells 15 with different terminal positions are tested, and further, such as Figure 1 and Figure 4 As shown, the probe mechanism 4 has two sets, symmetrically connected to the support plate 2, including a horizontal lead screw module 4.1, the power output end of the horizontal lead screw module 4.1 is connected to a vertical lead screw module 4.2, the power output end of the vertical lead screw module 4.2 is connected to a connecting plate 4.6, an adjusting plate 4.5 is connected to the connecting plate 4.6, and a probe 4.3 is connected to the adjusting plate 4.5 through an adjusting block 4.4.

[0038] The adjusting block 4.4 can be adjusted horizontally on the adjusting plate 4.5 and locked in place by the nut, thereby realizing the three-dimensional orientation adjustment of the probe 4.3 along the X, Y, and Z axes to meet the detection requirements of blade cells 15 with different sizes and pole positions.

[0039] To achieve the thickness measurement capability of this utility model, further, such as Figure 1 and Figure 5 As shown, the thickness measuring mechanism 5 includes a fixed plate 5.3 mounted on the gantry 3. A guide shaft 5.2 and a vertical lifting mechanism 5.1 are connected to the fixed plate 5.3. The power output end of the vertical lifting mechanism 5.1 is located below the fixed plate 5.3 and is connected to a battery cell pressure plate 5.4. A sensor 5.6 is connected to the side of the battery cell pressure plate 5.4 through a vertical lifting cylinder 5.5.

[0040] The vertical lifting mechanism 5.1 drives the cell pressure plate 5.4 to move, and uses the sensor 5.6 to detect the thickness of the blade cell 15. The sensor 5.6 is provided in two sets, diagonally distributed, which can ensure the accuracy of the detection of the thickness of the blade cell 15.

[0041] In a specific implementation of this utility model, after the blade battery cell 15 is placed on the upper battery cell platform 6.5, the upper slide cylinder 9 is activated. The upper battery cell platform 6.5 will move to a designated position on the upper slide linear guide rail 7 under the drive of the upper slide cylinder 9 (controlled by limit sensor detection and mechanical limit). Then, the vertical lead screw module 4.2 moves downward with the probe 4.3. After reaching the position, the horizontal lead screw module 4.1 moves close to and presses against the blade battery cell 15 with the probe 4.3 to test the open circuit voltage of the blade battery cell 15. After the test is completed, the probe 4.3 is released. The vertical lifting mechanism 5.1 drives the battery cell pressure plate 5.4 to move downward so that it fits against the blade battery cell 15. The diagonally arranged sensors 5.6 provide feedback information to test the thickness of the blade battery. After the test is completed, the upper slide assembly 6 returns.

[0042] When testing the blade cell 15 on the upper slide assembly 6, the blade cell 15 to be tested needs to be placed on the lower cell platform 6.5 of the lower slide assembly 10. Repeating the above steps can test the open circuit voltage and thickness of the blade cell 15 on the lower cell platform 6.5, realizing alternating testing and improving detection efficiency.

Claims

1. A single-machine platform for testing the open-circuit voltage and thickness of a blade battery cell, including a mounting plate (1), characterized in that, A gantry frame (3) is connected above the mounting plate (1), and a thickness measuring mechanism (5) is installed on the gantry frame (3); A support plate (2) is connected to the rear side of the gantry (3), and a probe mechanism (4) is connected to the support plate (2); The mounting plate (1) is symmetrically connected to the upper slide linear guide rail (7) via the support frame (8) below the gantry frame (3). The mounting plate (1) is connected to the upper slide cylinder (9) and the lower slide cylinder (11) between the two upper slide linear guide rails (7). The upper slide assembly (6) is driven and connected above the upper slide cylinder (9). The upper slide assembly (6) slides in cooperation with the upper slide linear guide rail (7). The mounting plate (1) is connected to the lower slide linear guide rail (12) on both sides of the lower slide cylinder (11). The lower slide linear guide rail (12) is lower than the upper slide linear guide rail (7). The lower slide cylinder (11) is connected to the drive of the lower slide assembly (10). The lower slide assembly (10) slides in cooperation with the lower slide linear guide rail (12).

2. The single-machine platform for testing the open-circuit voltage of a battery cell and measuring cell thickness according to claim 1, characterized in that, The upper slide assembly (6) includes an upper slide base plate (6.1), which is slidably engaged with the upper slide linear guide rail (7). An upper connector (6.3) and an upper impact block (6.4) are provided below the upper slide base plate (6.1). The upper connector (6.3) is connected to the power output end of the upper slide cylinder (9). An upper limit position (13) that cooperates with the upper impact block (6.4) is provided on the mounting plate (1). An upper battery cell platform (6.5) is provided on the upper surface of the upper slide base plate (6.1). An upper proximity switch hole (6.7) is provided on the upper battery cell platform (6.5). An upper fixing block (6.2) is provided around the upper battery cell platform (6.5). An upper positioning block (6.6) is connected to the upper fixing block (6.2).

3. The single-machine platform for testing the open-circuit voltage of a battery cell and measuring cell thickness according to claim 1 or 2, characterized in that, The sliding stage assembly (10) includes a sliding stage base plate (10.1), which slides in cooperation with the lower sliding stage linear guide rail (12). A lower connector (10.3) and a lower impact block (10.4) are provided below the sliding stage base plate (10.1). The lower connector (10.3) is connected to the power output end of the lower sliding stage cylinder (11). A lower limit (14) that cooperates with the lower impact block (10.4) is provided on the mounting plate (1). A lower battery cell platform (10.5) is provided on the upper surface of the sliding stage base plate (10.1). A lower proximity switch hole is provided on the lower battery cell platform (10.5). A lower fixing block (10.2) is provided around the lower battery cell platform (10.5). A lower positioning block (10.6) is connected to the lower fixing block (10.2).

4. The single-machine platform for testing the open-circuit voltage of a battery cell and measuring cell thickness according to claim 3, characterized in that, The probe mechanism (4) has two sets, symmetrically connected to the support plate (2), including a horizontal lead screw module (4.1), the power output end of the horizontal lead screw module (4.1) is connected to a vertical lead screw module (4.2), the power output end of the vertical lead screw module (4.2) is connected to a connecting plate (4.6), an adjusting plate (4.5) is connected to the connecting plate (4.6), and a probe (4.3) is connected to the adjusting plate (4.5) through an adjusting block (4.4).

5. The single-machine platform for testing the open-circuit voltage of a battery cell and measuring cell thickness according to claim 3, characterized in that, The thickness measuring mechanism (5) includes a fixed plate (5.3) mounted on the gantry (3). A guide shaft (5.2) and a vertical lifting mechanism (5.1) are connected to the fixed plate (5.3). The power output end of the vertical lifting mechanism (5.1) is located below the fixed plate (5.3) and connected to a cell pressure plate (5.4). A sensor (5.6) is connected to the side of the cell pressure plate (5.4) through a vertical lifting cylinder (5.5).

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