Novel device for testing electrolyte absorption rate of pole piece
By designing the electrode sheet mount and the electrode sheet absorption electrolyte rate testing device of the CCD camera, the problem of inconvenient recording of the electrode sheet wetting effect and inconvenient suspension of the rope in the prior art is solved, and accurate electrode sheet wetting rate measurement and efficient testing are achieved.
Patent Information
- Application Number
- CN202422259159.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The prior art cannot intuitively record the electrolyte wetting effect of the electrode sheet, and the suspended electrode sheet is inconvenient to operate, resulting in low testing efficiency and poor data accuracy.
A pole-sheet absorption electrolyte rate testing device including a pole-sheet mounting frame, an electrolyte tank, and a CCD camera was designed. The pole-sheet was fixed through the pole-sheet mounting frame, and the electrolyte permeation line was taken with a CCD camera, and the electrolyte permeation line was recorded, combined with a heater and a height adjustment structure to achieve accurate measurement.
It realizes intuitive recording of the pole-sheet wetting effect, improves the accuracy and efficiency of the test data, has a wide range of application, is suitable for on-site applications, and can measure the wetting rate at different temperatures.
Smart Images
Figure CN223122789U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pole piece testing devices, and particularly relates to a novel pole piece electrolyte absorption rate testing device. Background Art
[0002] In the production process of lithium batteries, after baking, the battery cells need to be statically placed at a high temperature for a period of time after the first liquid injection and then undergo a formation process. The purpose of the high-temperature static placement is to allow the electrolyte to fully infiltrate the pole pieces. At present, the common practice is to statically place at a high temperature (45±3°C) for 24 to 48 hours. However, during the high-temperature static placement, the requirements for controlling the temperature and humidity of the environment are relatively high, the energy consumption is large, and the infiltration rates and infiltration saturation times of battery cells with different material systems and different sizes are different. Without differential treatment, it is easy to cause unnecessary energy waste and prolong the process time.
[0003] At present, there are some technical solutions for testing the wettability of electrolytes. However, although the existing technical solutions can test the wettability of electrolytes under certain conditions, the infiltration effect of the pole pieces cannot be directly photographed and recorded. In addition, it is not convenient to operate the existing technical solutions to suspend the test pole pieces with suspension ropes. Content of the Utility Model
[0004] Aiming at the technical problems pointed out in the background art that the infiltration effect of the pole pieces cannot be directly photographed and recorded by using the existing technical solutions, and it is not convenient to operate the existing technical solutions to suspend the test pole pieces with suspension ropes, the purpose of the utility model is to provide a novel pole piece electrolyte absorption rate testing device.
[0005] To achieve the above purpose, the technical solution provided by the utility model is as follows:
[0006] A novel pole piece electrolyte absorption rate testing device includes a bottom plate, on which a pole piece mounting rack capable of longitudinally suspending a pole piece, an electrolyte tank for containing electrolyte, a longitudinally arranged camera support rod, and a CCD camera mounted on the camera support rod for photographing the height of the electrolyte penetration line on the pole piece are installed; the lower end of the pole piece extends into the electrolyte in the electrolyte tank.
[0007] Among them, the pole piece mounting rack includes two fixed support plates longitudinally installed on the bottom plate and located on both sides of the pole piece limit mounting groove, and an n-shaped adjustable pole piece suspension support plate connected to the two fixed support plates. Each upper part of the fixed support plate is provided with a mounting shoulder, and a longitudinal long hole is arranged on the side of the mounting shoulder. A plurality of first threaded holes are longitudinally and spacedly arranged on each side edge of the adjustable pole piece suspension support plate, and a fastening bolt passes through the longitudinal long hole and is connected to the first threaded hole at the corresponding position.
[0008] Among them, the plurality of first threaded holes are longitudinally and evenly spaced.
[0009] Among them, a pole piece limiting installation groove is arranged on the middle side of the adjustable pole piece suspension support plate, and the width of each pole piece limiting installation groove is the same as the width of the pole piece. The upper part of the pole piece is fixed on the adjustable pole piece suspension support plate through a magnetic attraction block.
[0010] Among them, the pole piece limiting installation grooves are arranged at multiple intervals horizontally.
[0011] Among them, the magnetic attraction block is square, and its width is the same as the width of the pole piece limiting installation groove.
[0012] Among them, a heater for heating the electrolyte in the electrolyte tank is arranged between the lower end of the electrolyte tank and the bottom plate.
[0013] Among them, the camera support rod is in an inverted L shape. The height adjustment screw passes through the horizontal part of the camera support rod and is threadedly connected to the second threaded hole at the upper end of the CCD camera. The height of the CCD camera is adjusted by rotating the height adjustment screw.
[0014] Among them, a light source support rod is longitudinally arranged on the bottom plate, and an auxiliary light source is installed on the upper part of the light source support rod.
[0015] Among them, the light source support rods are two symmetrically arranged on both sides of the camera support rod, and an auxiliary light source is installed on the upper part of each of them, and the heights of the two auxiliary light sources are the same.
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0017] 1. The pole piece mounting rack provided by the present utility model can fix the pole piece, solving the problem that it is inconvenient to operate when suspending the test pole piece with a suspension rope. Secondly, by using a CCD camera to take pictures, the position change of the electrolyte penetration line can be accurately recorded, and the error influence brought by manual counting is avoided during the whole measurement process, and the measurement data is more accurate and convenient;
[0018] 2. The pole piece mounting rack provided by the present application is provided with an innovative height adjustment structure, which can adjust the height of the pole piece and has a wide application range;
[0019] 3. The pole piece mounting rack provided by the present application can measure multiple pole pieces at the same time, thus facilitating the comparison of the wettability of pole pieces in different schemes and improving the test efficiency;
[0020] 4. In the solution provided by the present application, a square magnetic attraction block is used to fix the pole piece, which is convenient for taking and fixing the pole piece, and the position of the pole piece can be adjusted arbitrarily, which is suitable for on-site measurement applications;
[0021] 5. In the solution provided by the present application, a CCD camera height adjustable structure is provided, so that its height can be adjusted, and the infiltration height can be tracked in all directions;
[0022] 6. The pole piece mounting bracket provided by this application limits the pole piece through a pole piece positioning and mounting groove with the same width as the pole piece, ensuring the perpendicularity of the pole piece, thus facilitating positioning and at the same time ensuring the accuracy of test data;
[0023] 7. In the solution provided by this application, a heater is provided so that the electrolyte tank can be heated, and the infiltration rate of the pole piece at different electrolyte temperatures can be measured. Description of the Drawings
[0024] Figure 1 It is the first schematic diagram of the device structure provided by the embodiment of this application;
[0025] Figure 2 It is the second schematic diagram of the device structure provided by the embodiment of this application;
[0026] Figure 3 It is the schematic diagram of the structure of the pole piece limiting and mounting groove provided by the embodiment of this application;
[0027] Figure 4 It is the schematic diagram of the structure of the pole piece provided by the embodiment of this application;
[0028] In the figure, the bottom plate 1, the CCD camera 2, the pole piece 3, the magnetic attraction block 4, the adjustable pole piece suspension support plate 5, the fixed support plate 6, the electrolyte tank 7, the heater 8, the auxiliary light source 9, the light source support rod 10, the time controller 11, the camera support rod 12, the first threaded hole 13, the height adjustment screw rod 14, the longitudinal long hole 15, the electrolyte penetration line 16, the pole piece limiting and mounting groove 17. Detailed Embodiments
[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0031] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "linkage", and "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set, and it can refer to direct connection or indirect connection. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.
[0032] Please refer to Figures 1-4 Shown is the structural embodiment provided by the present utility model.
[0033] Embodiment 1
[0034] A novel test device for the electrolyte absorption rate of a pole piece provided in this embodiment includes a bottom plate 1, on which a pole piece mounting rack capable of longitudinally hanging a pole piece 3, an electrolyte tank 7 for containing electrolyte, a longitudinally arranged camera support rod 12, and a CCD camera 2 mounted on the camera support rod 12 for photographing the height of the electrolyte penetration line 16 on the pole piece; the lower end of the pole piece 3 extends into the electrolyte in the electrolyte tank 7.
[0035] It should be noted that the pole piece mounting rack provided by the present utility model can fix the pole piece, solving the problem of inconvenient operation of hanging the test pole piece with a suspension rope. Secondly, taking pictures with a CCD camera enables the accurate recording of the position change of the electrolyte penetration line. The entire measurement process avoids the error influence brought by manual counting, and the measurement data is more accurate and convenient.
[0036] In addition, a time controller 11 is used to trigger the CCD camera to take pictures by timing, eliminating the need for manual timing. The sampling and triggering frequencies are higher, more data groups can be collected, and it is more conducive to fine analysis.
[0037] It should be noted that according to the collected height of the electrolyte penetration line, the electrolyte absorption rate of the pole piece can be calculated by the method in the prior art. For example, if the time controller triggers the CCD camera to take pictures once within a time interval of ΔT, the CCD camera can capture the current height H of the electrolyte penetration line. By subtracting the height H0 of the electrolyte penetration line at the previous picture-taking, the electrolyte penetration height ΔH = H - H0 within the time interval ΔT can be obtained. Furthermore, the electrolyte absorption rate v of the pole piece can be calculated as v = ΔH / ΔT. This method is not the innovative content of this solution and is the prior art.
[0038] It should be noted that Figure 1 in, the electrolyte penetration line on the pole piece is not drawn. Refer to Figure 2 and Figure 2 the height of the electrolyte penetration line is the same.
[0039] Embodiment 2
[0040] This embodiment is an improvement based on the above embodiments. In this embodiment, a specific structure of the pole piece mounting bracket is provided. Specifically, the pole piece mounting bracket includes two fixed support plates 6 longitudinally mounted on the bottom plate 1 and located on both sides of the pole piece limiting groove 17, and an n-shaped adjustable pole piece hanging support plate 5 connected to the two fixed support plates 6. Each upper part of the fixed support plate 6 is provided with a mounting shoulder, and a longitudinal long hole 15 is provided on the side of the mounting shoulder. A plurality of first threaded holes 13 are longitudinally and spacedly arranged on each side edge of the adjustable pole piece hanging support plate 5, and the fastening bolts pass through the longitudinal long holes 15 and are connected to the first threaded holes 13 at corresponding positions. Preferably, the plurality of first threaded holes 13 are longitudinally and evenly spaced.
[0041] It should be noted that the number of the first threaded holes 13 is 3, 4, 5, etc.
[0042] It should be noted that when the height needs to be adjusted, loosen the fastening bolts. After adjusting the height, tighten the fastening bolts or screw the fastening bolts into the first threaded holes at different heights for height adjustment. In addition, the thickness, width, etc. of the n-shaped adjustable pole piece hanging support plate 5 are matched with the mounting shoulder. By setting the height adjustment structure, the height of the pole piece can be adjusted, and the applicable range is relatively wide.
[0043] Embodiment 3
[0044] This embodiment is an improvement based on the above embodiments. This embodiment provides a specific structure of the adjustable pole piece hanging support plate 5. Specifically, a pole piece limiting and mounting groove 17 is provided on the middle side of the adjustable pole piece hanging support plate 5. The width of each pole piece limiting and mounting groove 17 is the same as the width of the pole piece 3, and the upper part of the pole piece 3 is fixed on the adjustable pole piece hanging support plate 5 through the magnetic attraction block 4. Preferably, the pole piece limiting and mounting grooves 17 are multiple and spaced transversely. The magnetic attraction block 4 is square, and its width is the same as the width of the pole piece limiting and mounting groove 17.
[0045] It should be noted that the pole piece mounting bracket provided in this application can measure multiple pole pieces at the same time, which is convenient for comparing the wettability of pole pieces in different schemes and improves the test efficiency; using a square magnetic attraction block to fix the pole piece is convenient to operate and has high efficiency; by setting a pole piece positioning and mounting groove with the same width as the pole piece for pole piece limiting, the perpendicularity of the pole piece is ensured, which is convenient for positioning and at the same time ensures the accuracy of the test data; by fixing with a magnetic attraction piece, it is convenient to take and place and fix the pole piece, and the position of the pole piece can be adjusted arbitrarily, which is suitable for on-site measurement applications.
[0046] Embodiment 4
[0047] This embodiment is an improvement based on the above embodiment. In this embodiment, a heater 8 for heating the electrolyte in the electrolyte tank 7 is provided between the lower end of the electrolyte tank 7 and the bottom plate 1. By providing the heater in this embodiment, the electrolyte tank can be heated, and the wetting rate of the electrode plate at different electrolyte temperatures can be measured.
[0048] Embodiment 5
[0049] This embodiment is an improvement based on the above embodiment. In this embodiment, the camera support rod 12 is in an inverted L shape. The height adjustment screw 14 passes through the horizontal part of the camera support rod 12 and is threadedly connected to the second threaded hole at the upper end of the CCD camera 2. The preset depth of the second threaded hole satisfies the requirement of adjusting the height of the CCD camera 2 by rotating the height adjustment screw. A light source support rod 10 is longitudinally provided on the bottom plate 1, and an auxiliary light source 9 is installed on the upper part of the light source support rod 10. The light source support rods 10 are two symmetrically arranged on both sides of the camera support rod 12, and an auxiliary light source 9 is installed on the upper part of each of them, and the heights of the two auxiliary light sources 9 are the same.
[0050] It should be noted that in the solution provided by this application, a structure for adjusting the height of the CCD camera is provided, so that its height can be adjusted to track the wetting height in all directions. In addition, setting the auxiliary light source can improve the clarity of the captured image.
[0051] It should be noted that the innovation point of the solution of this application does not include the innovation of the method, and the methods involved are all prior arts.
[0052] It should be noted that the electronic components involved in the solution of this application, such as CCD cameras, auxiliary light sources, time controllers, heaters, etc., are all purchased externally, and their structural and functional implementation principles, etc. are all prior arts, and will not be elaborated here.
[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A novel test device for the electrolyte absorption rate of a pole piece, characterized in that It includes a bottom plate (1), on which there are installed a pole piece mounting rack capable of longitudinally suspending a pole piece (3), an electrolyte tank (7) for containing electrolyte, a longitudinally arranged camera support rod (12), and a CCD camera (2) installed on the camera support rod (12) for photographing the height of the electrolyte penetration line (16) on the pole piece; the lower end of the pole piece (3) extends into the electrolyte in the electrolyte tank (7).
2. The novel electrode sheet electrolyte absorption rate testing device according to claim 1, wherein The pole piece mounting rack includes two fixed support plates (6) longitudinally installed on the bottom plate (1) and located on both sides of the pole piece limit mounting groove (17), and an n-shaped adjustable pole piece suspension support plate (5) connected to the two fixed support plates (6). Each upper part of the fixed support plate (6) is provided with a mounting shoulder, and a longitudinal long hole (15) is arranged on the side of the mounting shoulder. A plurality of first threaded holes (13) are longitudinally and spacedly arranged on each side edge of the adjustable pole piece suspension support plate (5), and a fastening bolt passes through the longitudinal long hole (15) and is connected to the first threaded hole (13) at the corresponding position.
3. The novel electrode sheet electrolyte absorption rate testing device according to claim 2, wherein, The plurality of first threaded holes (13) are longitudinally and evenly spaced.
4. The novel electrolyte absorption rate testing device for the electrode plate according to claim 2, wherein An intermediate side of the adjustable pole piece suspension support plate (5) is provided with a pole piece limit mounting groove (17). The width of each pole piece limit mounting groove (17) is the same as the width of the pole piece (3), and the upper part of the pole piece (3) is fixed on the adjustable pole piece suspension support plate (5) by a magnetic attraction block (4).
5. The novel electrode sheet electrolyte absorption rate testing device according to claim 4, characterized in that, The pole piece limit mounting grooves (17) are arranged at transverse intervals.
6. The novel electrolyte absorption rate testing device for the pole piece according to claim 4, wherein The magnetic attraction block (4) is square, and its width is the same as the width of the pole piece limit mounting groove (17).
7. The novel electrode sheet electrolyte absorption rate testing device according to claim 1, wherein A heater (8) for heating the electrolyte in the electrolyte tank (7) is arranged between the lower end of the electrolyte tank (7) and the bottom plate (1).
8. The novel electrolyte absorption rate testing device for the pole piece according to claim 1, wherein The camera support rod (12) is in an inverted L shape. A height adjustment screw rod (14) passes through the transverse part of the camera support rod (12) and is threadedly connected to the second threaded hole at the upper end of the CCD camera (2). The height of the CCD camera (2) is adjusted by rotating the height adjustment screw rod.
9. The novel electrode sheet electrolyte absorption rate testing device according to claim 1, wherein A light source support rod (10) is longitudinally arranged on the bottom plate (1), and an auxiliary light source (9) is installed on the upper part of the light source support rod (10).
10. The novel electrode sheet electrolyte absorption rate testing device according to claim 9, characterized in that, The light source support rods (10) are two symmetrically arranged on both sides of the camera support rod (12), and an auxiliary light source (9) is installed on the upper part of each of them, and the heights of the two auxiliary light sources (9) are the same.