Lithium battery thickness measuring mechanism

Abstract

The utility model relates to a lithium battery thickness measuring mechanism, comprising a pedestal which is provided with a cell supporting seat used for supporting a to-be-measured cell; a test support frame; the output end of the first power source is connected with a thickness measuring flat plate, and the first power source drives the thickness measuring flat plate to be in contact with the to-be-measured battery cell on the battery cell supporting seat; a first lifting assembly; a plurality of GT probes are arranged between the second lifting assembly and the first lifting assembly, and the first lifting assembly and the second lifting assembly synchronously drive the GT probes to make contact with the thickness measuring flat plate to achieve thickness measurement. According to the lithium battery thickness measuring mechanism, the driving mode of the GT probe is that the first lifting assembly and the second lifting assembly of the front servo mechanism and the rear servo mechanism move up and down synchronously, the parallelism of the front cantilever and the rear cantilever is guaranteed, the thickness measuring flat plate is parallel through the servo synchronous driving mechanisms on the front side and the rear side, and measurement is more accurate; in addition, online multi-station simultaneous testing can be carried out, and the production takt can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, and in particular to a lithium battery thickness measuring mechanism. Background Technology

[0002] Lithium batteries are one of the most common power supply devices in daily life. Their most common applications are in power tools, electric bicycles, electric motorcycles, and electric cars. In addition, lithium batteries are widely used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, as well as in military equipment, aerospace, and many other fields.

[0003] Battery cells are a crucial component of batteries. With the widespread application and improved production of lithium battery technology, customers have increasingly higher requirements for battery performance and other aspects, and cell thickness has become an important indicator.

[0004] In traditional testing processes, the thickness of lithium battery cells is often measured using relatively precise tools such as calipers. However, caliper measurements are subject to numerous human uncertainties. Maintaining a constant clamping force on the lithium battery cell during measurement is difficult, and differences between operators can also affect the measurement results. Furthermore, because the surface thickness of lithium battery cells is often unevenly distributed, multiple-point testing is usually required to measure the thickest point. Even then, it is not always possible to accurately measure the thickness at the thickest point. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the manual testing method in the prior art is inefficient and has large errors, and cannot meet the huge demand and high quality requirements of consumers for lithium batteries.

[0006] To solve the above-mentioned technical problems, this utility model provides a lithium battery thickness measurement mechanism, comprising: a base on which a cell support seat for supporting the cell to be tested is provided; a test support frame mounted on the base; a first power source mounted on the top plate of the test support frame, and the output end of the first power source is connected to a thickness measuring plate, wherein the first power source drives the thickness measuring plate to contact the cell to be tested on the cell support seat; a first lifting assembly disposed on the test support frame; and a second lifting assembly disposed on the test support frame, wherein the second lifting assembly and the first lifting assembly lift synchronously, and a plurality of GT probes are disposed between the first lifting assembly and the second lifting assembly, wherein the first lifting assembly and the second lifting assembly synchronously drive the plurality of GT probes to contact the thickness measuring plate to achieve thickness measurement.

[0007] In one embodiment of this utility model, the thickness measuring plate is a rectangular plate, and the end face of the thickness measuring plate opposite to the cell support is a plane.

[0008] In one embodiment of this utility model, a movable frame is provided between the thickness measuring plate and the first power source, and the movable frame is slidably connected to the test support frame.

[0009] In one embodiment of this utility model, a plurality of sliders are provided on two opposite side walls of the movable frame, and a linear guide rail is provided on the inner wall of the test support frame. The sliders are disposed on the linear guide rail and can slide along the linear guide rail.

[0010] In one embodiment of the present invention, the first lifting assembly includes a first drive motor, a first lead screw, and a first moving plate. The first drive motor is mounted on the test support frame. The first lead screw is connected to the shaft of the first drive motor. The first moving plate is connected to the lead screw nut of the first lead screw. The first moving plate is slidably connected to the test support frame.

[0011] In one embodiment of the present invention, the second lifting assembly includes a second drive motor, a second lead screw, and a second movable plate. The second drive motor is mounted on the test support frame. The second lead screw and the shaft of the second drive motor are connected. The second movable plate and the lead screw nut of the second lead screw are connected. The second movable plate and the test support frame are slidably connected.

[0012] In one embodiment of this utility model, a vertical connecting plate is connected to the first movable plate, and a horizontal connecting plate is connected to the second movable plate. The other end of the horizontal connecting plate away from the second movable plate is fixedly connected to the lower end of the vertical connecting plate. A probe mounting plate is connected to the horizontal connecting plate, and a plurality of GT probes are disposed on the probe mounting plate.

[0013] In one embodiment of this utility model, a second slider is connected to the vertical connecting plate, a second linear guide rail is provided on the inner wall of the test support frame, the second slider is disposed on the second linear guide rail, and the second slider can slide along the second linear guide rail.

[0014] In one embodiment of this utility model, a slider three is connected to the second movable plate, and a linear guide rail three is provided on the inner wall of the test support frame. The slider three is disposed on the linear guide rail three and can slide along the linear guide rail three.

[0015] In one embodiment of this utility model, the first power source is a cylinder.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] The lithium battery thickness measurement mechanism of this invention involves placing the battery cell to be tested onto a cell support base. A first power source activates, maintaining constant pressure to press the battery cell under test. A first lifting assembly and a second lifting assembly descend to the testing position, and the GT probe performs thickness detection. After the test is completed, the first and second lifting assemblies drive the GT probe back to its original position, and the first power source rises to its initial position. The GT probe is driven by two sets of servo mechanisms, with the first and second lifting assemblies moving synchronously up and down to ensure the parallelism of the front and rear cantilever arms. Through the synchronous servo drive mechanism on both sides, the thickness measurement plates are made parallel, resulting in more accurate measurements. Furthermore, it allows for simultaneous online testing at multiple stations, significantly improving production cycle time. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the lithium battery thickness measuring mechanism in a preferred embodiment of the present invention. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the lithium battery thickness measuring mechanism in a preferred embodiment of the present invention. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the lithium battery thickness measuring mechanism in a preferred embodiment of the present invention. Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the lithium battery thickness measuring mechanism in a preferred embodiment of the present invention. Figure 2 ;

[0023] Figure 5 This is a partial structural schematic diagram of the lithium battery thickness measuring mechanism in a preferred embodiment of the present invention.

[0024] Explanation of reference numerals in the accompanying drawings: Base 1, Test support frame 2, Linear guide rail 1 21, Linear guide rail 22, Linear guide rail 3 23, First power source 3, Thickness measuring plate 4, First lifting assembly 5, First drive motor 51, First lead screw 52, ​​First moving plate 53, Vertical connecting plate 531, Slider 2 532, Second lifting assembly 6, Second drive motor 61, Second lead screw 62, Second moving plate 63, Horizontal connecting plate 631, Slider 3 632, Moving frame 7, Slider 1 71, Cell support base 100, Probe mounting plate 101, Cell under test 200. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0026] Reference Figure 1-5 As shown, the lithium battery thickness measurement mechanism of this utility model includes several main parts: a base 1, a cell support 100, a test support frame 2, a first power source 3, a thickness measuring plate 4, a first lifting assembly 5, and a second lifting assembly 6. The base 1 has a cell support 100 for supporting the cell 200 to be tested. The test support frame 2 is mounted on the base 1. The first power source 3 is mounted on the top plate of the test support frame 2, and its output end is connected to the thickness measuring plate 4. The first power source 3 drives the thickness measuring plate 4 to contact the cell to be tested on the cell support 100. The first lifting assembly 5 is disposed on the test support frame 2. The second lifting assembly 6 is disposed on the test support frame 2, and it rises and falls synchronously with the first lifting assembly 5. Several GT probes 10 are disposed between the first lifting assembly 5 and the second lifting assembly 6. The first lifting assembly 5 and the second lifting assembly 6 synchronously drive the several GT probes 10 to contact the thickness measuring plate 4 to achieve thickness measurement. First, the first power source 3 drives the thickness measuring plate 4 to descend and attach it to the upper surface of the battery cell 200 to be tested. Then, the first lifting component 5 and the second lifting component move synchronously to drive several GT probes 10 to descend and contact the thickness measuring plate 4, thereby measuring the thickness of the battery cell 200 to be tested.

[0027] In the above structure, the thickness measuring plate 4 is a rectangular plate, and the end face of the thickness measuring plate 4 opposite to the cell support 100 is a plane. The plurality of GT probes 10 are arranged in a rectangular array, preferably four GT probes 10, which are respectively located at the four corners of the rectangular cross section, and the first lifting component 5 and the second lifting component 6 are respectively located on both sides of the two opposite sides of the rectangular cross section where the plurality of GT probes 10 are located.

[0028] In the above structure, a movable frame 7 is provided between the thickness measuring plate 4 and the first power source 3, and the movable frame 7 is slidably connected to the test support frame 2. Several sliders 71 are provided on two opposite side walls of the movable frame 7, and a linear guide rail 21 is provided on the inner wall of the test support frame 2. The sliders 71 are mounted on the linear guide rail 21 and can slide along the linear guide rail 21.

[0029] In the above structure, the first lifting assembly 5 includes a first drive motor 51, a first lead screw 52, ​​and a first moving plate 53. The first drive motor 51 is mounted on the test support frame 2. The first lead screw 52 is connected to the shaft of the first drive motor 51. The first moving plate 53 is connected to the lead screw nut of the first lead screw 52, ​​and the first moving plate 53 is slidably connected to the test support frame 2. A second slider 532 is connected to the vertical connecting plate 531. A second linear guide rail 22 is provided on the inner wall of the test support frame 2. The second slider 532 is disposed on the second linear guide rail 22 and can slide along the second linear guide rail 22.

[0030] In the above structure, the second lifting assembly 6 includes a second drive motor 61, a second lead screw 62, and a second moving plate 63. The second drive motor 61 is mounted on the test support frame 2. The second lead screw 62 and the shaft of the second drive motor 61 are connected. The second moving plate 63 and the lead screw nut of the second lead screw 62 are connected, and the second moving plate 63 and the test support frame 2 are slidably connected. A slider 632 is connected to the second moving plate 63. A linear guide rail 23 is provided on the inner wall of the test support frame 2. The slider 632 is disposed on the linear guide rail 23 and can slide along the linear guide rail 23.

[0031] In the above structure, a vertical connecting plate 531 is connected to the first moving plate 53, and a horizontal connecting plate 631 is connected to the second moving plate 63. The other end of the horizontal connecting plate 631 away from the second moving plate 63 is fixedly connected to the lower end of the vertical connecting plate 531. A probe mounting plate 101 is connected to the horizontal connecting plate 631, and a plurality of GT probes 10 are disposed on the probe mounting plate 101. The moving frame 7 has a hollow structure, so the probe mounting plate 101 can penetrate through the moving frame 7, so that the probe mounting plate 101 is located above the thickness measuring plate 4, and the plurality of GT probes 10 and the thickness measuring plate 4 are arranged facing each other.

[0032] Preferably, the first power source 3 is a cylinder. A proportional regulating valve is connected to the cylinder, and a precision electric proportional pressure regulating valve is used to automatically compensate for gas pressure fluctuations in real time.

[0033] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A lithium battery thickness measuring mechanism, characterized by, The utility model relates to a kind of battery thickness measurement device, including: Base, which is provided with battery support seat for supporting battery to be measured on it; Test support frame, which is installed on the base; First power source, which is installed on the top plate of test support frame, and the output end of first power source is connected with thickness measurement flat plate, and the first power source drives thickness measurement flat plate to contact with battery to be measured on battery support seat; First lifting assembly, which is arranged on test support frame; Second lifting assembly, which is arranged on test support frame, and second lifting assembly is synchronous with first lifting assembly, and a plurality of GT probes are arranged between first lifting assembly and second lifting assembly, and first lifting assembly and second lifting assembly drive a plurality of GT probes to contact with thickness measurement flat plate to realize thickness measurement.

2. The lithium battery gauge of claim 1, wherein: The thickness measurement flat plate is a rectangular flat plate, and the end face opposite to the battery support seat is a plane.

3. The lithium battery gauge of claim 1, wherein: A moving frame is arranged between the thickness measurement flat plate and the first power source, and the moving frame is slidably connected with the test support frame.

4. The lithium battery gauge of claim 3, wherein: A plurality of sliding blocks are arranged on the two opposite side walls of the moving frame, and linear guide rails are arranged on the inner wall of the test support frame, and the sliding blocks are arranged on the linear guide rails and can slide along the linear guide rails.

5. The lithium battery gauge of claim 1, wherein: The first lifting assembly includes a first driving motor, a first lead screw and a first moving plate, the first driving motor is installed on the test support frame, the first lead screw is connected with the rotating shaft of the first driving motor, the first moving plate is connected with the lead screw nut of the first lead screw, and the first moving plate is slidably connected with the test support frame.

6. The lithium battery gauge of claim 5, wherein: The second lifting assembly includes a second driving motor, a second lead screw and a second moving plate, the second driving motor is installed on the test support frame, the second lead screw is connected with the rotating shaft of the second driving motor, the second moving plate is connected with the lead screw nut of the second lead screw, and the second moving plate is slidably connected with the test support frame.

7. The lithium battery gauge of claim 6, wherein: A vertical connecting plate is connected with the first moving plate, a horizontal connecting plate is connected with the second moving plate, the other end of the horizontal connecting plate away from the second moving plate is fixedly connected with the lower end of the vertical connecting plate, a probe mounting plate is connected with the horizontal connecting plate, and a plurality of GT probes are arranged on the probe mounting plate.

8. The lithium battery gauge of claim 7, wherein: A sliding block is connected with the vertical connecting plate, a linear guide rail is arranged on the inner wall of the test support frame, and the sliding block is arranged on the linear guide rail and can slide along the linear guide rail.

9. The lithium battery gauge of claim 6, wherein: A sliding block is connected with the second moving plate, a linear guide rail is arranged on the inner wall of the test support frame, and the sliding block is arranged on the linear guide rail and can slide along the linear guide rail.

10. The lithium battery gauge of claim 1, wherein: The first power source is a pneumatic cylinder.

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