Device for detecting uniformity and settleability of lithium battery slurry

Abstract

The invention relates to the technical field of lithium ion batteries, and discloses a device for detecting uniformity and settleability of lithium battery slurry, which comprises a mounting base, a lifting component arranged on one side of the top of the mounting base, a fixing component arranged on the lifting component, and a device body arranged on the fixing component, the sealing covers are arranged at the top and the bottom of the device body, and the probes are arranged on the sealing covers. According to the device for detecting the uniformity and settleability of the lithium battery slurry, sampling, standing and detection are integrated into one step, and after the slurry is injected from the top opening at one time, the whole process is closed and runs without opening a cover or transferring for many times, so that the complexity and errors caused by repeated sampling in a traditional method are fundamentally eliminated; the device can detect uniform distribution and sedimentation conditions of standing in different time periods, can track and detect for a long time without repeated sampling, and has the advantages of convenience in sampling, simplicity in operation, reduction of waste, improvement of working efficiency, saving of production cost and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium-ion batteries, and in particular to a device for detecting the uniformity and sedimentation of lithium battery slurry. Background Art

[0002] With the advancement of technology, the application of lithium batteries is becoming increasingly broad, and their performance is attracting considerable attention. The stability of lithium battery slurry significantly impacts battery performance and is a key indicator of battery cost. Slurry quality directly affects the density stability of the coated electrode and the quality of the electrode, which in turn affects various battery properties such as capacity and internal resistance. Lithium battery slurry sedimentation is an important indicator of slurry properties. Therefore, testing the sedimentation of lithium battery slurry is a key indicator for evaluating slurry quality and a critical step in battery manufacturing process control.

[0003] At present, the sedimentation test of lithium battery slurry generally adopts the method of sampling with a measuring cylinder. After standing, the solid content is tested visually or by taking slurry samples from different parts of the upper, middle and lower parts of the measuring cylinder again. Although the visual inspection method is simple, the test results are not accurate. Re-sampling and testing are not only cumbersome to operate and cannot be repeated, resulting in waste of raw materials and reduced work efficiency, but also have large measurement errors. Summary of the Invention

[0004] In view of the above-mentioned existing lithium battery slurry sedimentation test generally adopts graduated cylinder sampling, and after standing, visual inspection or re-taking slurry samples from different parts of the upper, middle and lower parts of the graduated cylinder to test the solid content. Although the visual inspection method is simple, the test results are inaccurate; re-sampling and testing are not only cumbersome to operate, but also cannot be repeated, resulting in waste of raw materials and reduced work efficiency, and the measurement error is large. Therefore, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a device for detecting the uniformity and sedimentation of lithium battery slurry, which aims to make sampling convenient and to directly complete the sedimentation detection of lithium battery slurry after standing still without repeated sampling. This not only reduces sampling waste, effectively improves work efficiency, and saves production costs, but also makes the detection results of this technology more intuitive and accurate, and the operation is simple and quick, which is suitable for industrial promotion.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A device for detecting the uniformity and sedimentation of lithium battery slurry, comprising a mounting base, and also comprising a lifting component arranged on one side of the top of the mounting base, a fixing component arranged on the lifting component, a device body arranged on the fixing component, a sealing cover arranged on the top and bottom of the device body, a probe arranged on the sealing cover, and one end of the probe passes through the sealing cover and extends to the inner cavity of the device body, a DC power supply arranged on the top of the mounting base and away from the lifting component, and a first wire arranged at one end of the probe located outside the device body, and two groups of the first wires are connected to the DC power supply at one end away from the sealing cover to form a closed loop.

[0007] As a preferred embodiment of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention, two test ports are respectively provided on the upper, middle and lower parts of one side of the surface of the device body, and an electron collector is installed inside the test port, three groups of voltage displays are arranged on one side of the device body, and two groups of second wires are connected to the surface of the voltage display, and one end of the second wire is connected to the electron collector.

[0008] As a preferred embodiment of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention, the device body is a cylindrical hollow barrel made of glass, and both the top and bottom ends are open.

[0009] As a preferred solution of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention, the sealing cover is made of stainless steel, and the inner side is rotatably connected to the device body in a threaded manner.

[0010] As a preferred solution of the device for detecting uniformity and sedimentation of lithium battery slurry according to the present invention, the test ports are located on the same side of the device body, and the distances between the two test ports in the upper, middle and lower parts are equal.

[0011] As a preferred solution of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention, the lifting component includes a threaded rod arranged on one side of the top of the mounting base, a lifting plate arranged above the mounting base, a threaded hole arranged at the top of the lifting plate, and the threaded hole passes through the lifting plate, one end of the threaded rod passes through the lifting plate through the threaded hole, and a first rotating handle arranged at the top of the threaded rod.

[0012] As a preferred solution of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention, the lifting component further includes a limiting hole arranged at the top of the lifting plate close to the threaded hole, and the limiting hole passes through the lifting plate, and a positioning column is arranged at the top of the mounting base close to the threaded rod, and the top end of the positioning column slides through the lifting plate through the limiting hole.

[0013] As a preferred solution of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention, the fixing component includes a mounting side plate arranged on one side of the lifting plate, a support plate arranged on the top and bottom of the lifting plate, and the end of the support plate away from the lifting plate and one side of the mounting side plate are connected to each other, and a connecting slot is arranged on the top and bottom of one side of the mounting side plate, and the connecting slot passes through the mounting side plate.

[0014] As a preferred solution of the device for detecting the uniformity and sedimentation of lithium battery slurry described in the present invention, the fixing component also includes a bidirectional threaded rod arranged at one end of the inner cavity of the connecting slot, and one end of the bidirectional threaded rod extends to the outside of the mounting side plate, a second rotating handle arranged at the end of the bidirectional threaded rod located outside the mounting side plate, two groups of internal threaded sleeves arranged on the surface of the bidirectional threaded rod and located in the inner cavity of the connecting slot, and one end of the internal threaded sleeve extends to the outside of the connecting slot, a clamping plate arranged at one end of the internal threaded sleeve located outside the mounting side plate, and an arc-shaped groove arranged at one end of the clamping plate close to the device body.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: 1. The present invention integrates "sampling-standing-testing" into one step. After the slurry is injected from the top opening at one time, the whole process is closed and there is no need to open the cover or transfer it multiple times. This fundamentally eliminates the tediousness and errors caused by repeated sampling in traditional methods. In addition, the uniformity distribution and sedimentation conditions of different standing time periods can be detected. Long-term tracking and detection are possible without repeated sampling. It has the advantages of convenient sampling, simple operation, reduced waste, improved work efficiency, and saved production costs.

[0016] 2. The present invention converts the uniformity and sedimentation information inside the slurry into easy-to-read voltage signals in real time. The operator can quickly make quality judgments based solely on the numerical changes on the display, completely getting rid of the subjectivity and experience threshold of traditional visual inspection. The electrical signal is sensitive to tiny concentration differences and can capture anomalies in the early stages of sedimentation, enabling pre-emptive problem detection and early intervention. The three groups of test ports cover the upper, middle, and lower areas, and the vertical distribution is clear at a glance, making the results more convincing. This allows for a more intuitive and accurate judgment of the slurry uniformity distribution and sedimentation conditions, making it suitable for industrial promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention; Figure 2 Schematic diagram of the overall structure of the device for detecting uniformity and sedimentation of lithium battery slurry from another perspective of the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the device body of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the fixing components of the device for detecting the uniformity and sedimentation of lithium battery slurry according to the present invention.

[0018] Description of reference numerals: 1. Device body; 2. Mounting base; 3. Lifting component; 31. Threaded rod; 32. Positioning column; 33. Lifting plate; 34. Threaded hole; 35. Limit hole; 36. First rotating handle; 37. Support plate; 4. Fixing component; 41. Mounting side plate; 42. Connecting slot; 43. Bidirectional threaded rod; 44. Internal threaded sleeve; 45. Clamping plate; 46. Second rotating handle; 47. Arc groove; 5. DC power supply; 6. First wire; 7. Sealing cover; 8. Probe; 9. Test port; 10. Electron collector; 11. Voltage display; 12. Second wire. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. Example 1

[0020] Reference Figures 1-4 , which is the first embodiment of the present invention, provides a device for detecting the uniformity and sedimentation of lithium battery slurry, the device for detecting the uniformity and sedimentation of lithium battery slurry includes a mounting base 2, a lifting component 3 arranged on one side of the top of the mounting base 2, a fixing component 4 arranged on the lifting component 3, and a device body 1 arranged on the fixing component 4, the device body 1 is a cylindrical hollow barrel made of glass, and the top and bottom ends are both open, a sealing cover 7 is arranged on the top and bottom of the device body 1, the sealing cover 7 is made of stainless steel, and the inner side is threadedly connected to the device body 1, a probe 8 is arranged on the sealing cover 7, and one end of the probe 8 passes through the sealing cover 7 and extends to the inner cavity of the device body 1, a DC power supply 5 is arranged on the top of the mounting base 2 and away from the lifting component 3, and a first wire 6 is arranged at the end of the probe 8 located outside the device body 1, the ends of the two groups of first wires 6 away from the sealing cover 7 are connected to the DC power supply 5 to form a closed loop.

[0021] Two test ports 9 are respectively provided at the upper, middle and lower parts of one side of the surface of the device body 1, and an electron collector 10 is installed inside the test port 9. The test port 9 is located on the same side of the device body 1, and the two test ports 9 at the upper, middle and lower parts are equidistant. Three groups of voltage displays 11 are provided on one side of the device body 1, and two groups of second wires 12 are connected to the surface of the voltage display 11, and one end of the second wire 12 is connected to the electron collector 10.

[0022] During use, first seal the bottom opening of the device body 1 with a sealing cover 7 fixed with a probe 8, then take the slurry sample and inject it into the device body 1 from the top of the device body 1, and shake it slightly to make the slurry completely fill the device body 1 to ensure that the probe 8 is completely immersed in the slurry sample, and then seal the top opening of the device body 1 with the sealing cover 7 fixed with the probe 8, and finally place the device body 1 with the slurry sample on the fixed component 4, and an external DC power supply 5. The conductive agent and active substance in the slurry are both conductive and can form a closed loop. The voltage display 11 shows the electron collection situation of the electron collector 10. After the value of the voltage display 11 stabilizes, it is used as the initial state of the slurry. After standing for a period of time, the difference in the values ​​of the voltage display 11 is used to judge the slurry uniformity distribution and sedimentation condition, so as to realize the detection of the slurry uniformity and sedimentation. After completing the sampling test, disassemble the device body 1 in the reverse order and clean the device body 1. Example 2

[0023] Reference Figures 1-4 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the lifting component 3 includes a threaded rod 31 arranged on one side of the top of the mounting base 2, a lifting plate 33 arranged above the mounting base 2, a threaded hole 34 arranged on the top of the lifting plate 33, and the threaded hole 34 passes through the lifting plate 33, one end of the threaded rod 31 passes through the lifting plate 33 through the threaded hole 34, and a first rotating handle 36 arranged on the top of the threaded rod 31.

[0024] The lifting component 3 also includes a limiting hole 35 arranged at the top of the lifting plate 33 near the side of the threaded hole 34, and the limiting hole 35 passes through the lifting plate 33, and a positioning column 32 is arranged at the top of the mounting base 2 and near the side of the threaded rod 31, and the top end of the positioning column 32 slides through the lifting plate 33 through the limiting hole 35. The positioning column 32 is slidably connected to the surface of the lifting plate 33, and the lifting plate 33 can be limited so that the lifting plate 33 will not deviate when moving up and down along the threaded rod 31.

[0025] The fixing component 4 includes a mounting side plate 41 arranged on one side of the lifting plate 33, a support plate 37 arranged at the top and bottom of the lifting plate 33, and one end of the support plate 37 away from the lifting plate 33 and one side of the mounting side plate 41 are connected to each other, and a connecting slot 42 is arranged at the top and bottom of one side of the mounting side plate 41, and the connecting slot 42 passes through the mounting side plate 41.

[0026] The fixing component 4 also includes a bidirectional threaded rod 43 arranged at one end of the inner cavity of the communicating slot 42, and one end of the bidirectional threaded rod 43 extends to the outside of the mounting side plate 41, a second rotating handle 46 arranged at one end of the bidirectional threaded rod 43 located outside the mounting side plate 41, two groups of internal threaded sleeves 44 arranged on the surface of the bidirectional threaded rod 43 and located in the inner cavity of the communicating slot 42, and one end of the internal threaded sleeve 44 extends to the outside of the communicating slot 42, a clamping plate 45 arranged at one end of the internal threaded sleeve 44 located outside the mounting side plate 41, and an arcuate groove 47 arranged on one end of the clamping plate 45 close to the device body 1. The arrangement of the arcuate groove 47 facilitates better clamping operation with the surface of the device body 1.

[0027] During use, when the device body 1 containing the slurry sample is placed on one side of the mounting side plate 41, the second rotating handle 46 can be rotated separately to drive the bidirectional threaded rod 43 to rotate, and then the two groups of internal threaded sleeves 44 on the surface of the bidirectional threaded rod 43 are close to each other, and then the clamping plate 45 is close to the surface of the device body 1 and the arc groove 47 is in contact with the surface of the device body 1, and then the device body 1 can be limited and clamped. Subsequently, the threaded rod 31 is driven to rotate by screwing the first rotating handle 36, so that the lifting plate 33 moves up or down on the surface of the threaded rod 31, and then the device body 1 clamped and fixed on the mounting side plate 41 can be displaced up and down to an appropriate position.

[0028] The remaining structures are the same as those of Example 1.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A device for detecting the uniformity and sedimentation of lithium battery slurry, comprising a mounting base (2), characterized in that: The device further comprises a lifting component (3) arranged on one side of the top of the mounting base (2), a fixing component (4) arranged on the lifting component (3), a device body (1) arranged on the fixing component (4), a sealing cover (7) arranged on the top and bottom of the device body (1), a probe (8) arranged on the sealing cover (7), one end of the probe (8) passing through the sealing cover (7) and extending into the inner cavity of the device body (1), a DC power supply (5) arranged on the top of the mounting base (2) and away from the lifting component (3), and a first wire (6) arranged on one end of the probe (8) located outside the device body (1), and two groups of the first wires (6) are connected to the DC power supply (5) at one end away from the sealing cover (7) to form a closed loop.

2. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 1, characterized in that: Two test ports (9) are respectively provided at the upper, middle and lower parts of one side of the surface of the device body (1), and an electron collector (10) is installed inside the test port (9). Three groups of voltage displays (11) are provided on one side of the device body (1), and two groups of second wires (12) are provided on the surface of the voltage display (11) and connected thereto, and one end of the second wire (12) and the electron collector (10) are connected to each other.

3. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 1, characterized in that: The device body (1) is a cylindrical hollow barrel made of glass, and both the top and bottom ends are designed to be open.

4. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 1, characterized in that: The sealing cover (7) is made of stainless steel, and its inner side is rotatably connected to the device body (1) via a thread.

5. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 1, characterized in that: The test ports (9) are located on the same side of the device body (1), and the distances between the two test ports (9) at the upper, middle, and lower parts are equal.

6. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 1, characterized in that: The lifting component (3) includes a threaded rod (31) arranged on one side of the top of the mounting base (2), a lifting plate (33) arranged above the mounting base (2), a threaded hole (34) arranged on the top of the lifting plate (33), and the threaded hole (34) passes through the lifting plate (33), one end of the threaded rod (31) passes through the lifting plate (33) through the threaded hole (34), and a first rotating handle (36) arranged on the top of the threaded rod (31).

7. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 6, characterized in that: The lifting component (3) further includes a limiting hole (35) provided at the top of the lifting plate (33) near the threaded hole (34), and the limiting hole (35) passes through the lifting plate (33); a positioning column (32) provided at the top of the mounting base (2) near the threaded rod (31), and the top end of the positioning column (32) slides through the lifting plate (33) through the limiting hole (35).

8. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 7, characterized in that: The fixing component (4) includes a mounting side plate (41) provided on one side of the lifting plate (33), support plates (37) provided on the top and bottom of the lifting plate (33), wherein one end of the support plate (37) away from the lifting plate (33) and one side of the mounting side plate (41) are connected to each other, and connecting slots (42) provided on the top and bottom of one side of the mounting side plate (41), wherein the connecting slots (42) penetrate the mounting side plate (41).

9. The device for detecting uniformity and sedimentation of lithium battery slurry according to claim 8, characterized in that: The fixing component (4) further includes a bidirectional threaded rod (43) disposed at one end of the inner cavity of the connecting slot (42), and one end of the bidirectional threaded rod (43) extends to the outside of the mounting side plate (41); a second rotating handle (46) disposed at one end of the bidirectional threaded rod (43) located outside the mounting side plate (41); two groups of internal threaded sleeves (44) disposed on the surface of the bidirectional threaded rod (43) and located in the inner cavity of the connecting slot (42), and one end of the internal threaded sleeves (44) extends to the outside of the connecting slot (42); a clamping plate (45) disposed at one end of the internal threaded sleeve (44) located outside the mounting side plate (41); and an arc-shaped groove (47) disposed at one end of the clamping plate (45) close to the device body (1).

Images