Glass container for containing positive and negative electrode paste of lithium ion battery

Abstract

The utility model discloses a glass container for containing positive and negative electrode slurry of a lithium ion battery. The glass container comprises a container body, an upper top cover and a lower top cover, an upper opening is formed in the top of the container body, and a lower opening is formed in the side face of the container body. The upper top cover is detachably connected to the upper opening, and the lower top cover is detachably connected to the lower opening. When the glass container is used for containing lithium ion battery positive and negative electrode paste, the sampling position is accurate when upper and lower layer paste is taken, the sampling is simple, and the sampling time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery technology, specifically to a glass container for holding positive and negative electrode slurries of lithium-ion batteries. Background Technology

[0002] Lithium-ion batteries, as one of the mainstream energy storage devices, have been widely used in fields such as communication and electronic devices, energy storage power stations, and new energy vehicles due to their many advantages, including being green and environmentally friendly, having high energy density, low self-discharge, and long cycle life.

[0003] The flowability, stability, and uniformity of the positive and negative electrode slurries are crucial for lithium-ion batteries. During experiments, the solid content of the upper and lower layers of the lithium-ion battery positive and negative electrode slurries is typically measured after 24 hours of settling to assess stability and ensure coating uniformity. Measuring the solid content of the upper and lower layers of the lithium-ion battery positive and negative electrode slurries requires ensuring accurate sampling and identical processing for each layer. The choice of container for holding the slurry samples is a critical step in the entire process of measuring the viscosity and solid content of the lithium-ion battery positive and negative electrode slurries. Traditionally, slurries are held in glass containers with an inner diameter of 80mm at the top and bottom and a height of 140mm.

[0004] Using traditional glass bottles as containers for slurry samples can easily lead to inaccurate sampling locations when measuring the viscosity and solid content of lithium-ion battery positive and negative electrode slurries. Depending on the height of the glass bottle and the height of the slurry within it, it cannot be guaranteed that the slurry drawn using a dropper will always be from the bottom layer of the glass bottle, resulting in poor sampling accuracy. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a glass container for holding positive and negative electrode slurries of lithium-ion batteries. In the process of measuring the viscosity and solid content of positive and negative electrode slurries of lithium-ion batteries, the sampling accuracy of the upper and lower slurries can be improved.

[0006] To achieve the above objectives, the technical solution designed by this utility model is as follows:

[0007] This utility model provides a glass container for holding positive and negative electrode slurries of lithium-ion batteries. It is used to hold positive and negative electrode slurries and facilitates sampling of the upper and lower slurries. The container includes an upper top cover and a lower top cover. The top of the container is provided with an upper opening and the side of the container is provided with a lower opening. The upper top cover is detachably connected to the upper opening and the lower top cover is detachably connected to the lower opening.

[0008] Optionally, the container is cylindrical, the upper and lower bottom inner diameter of the container ranges from 70 to 90 mm, the height ranges from 130 to 150 mm; the inner diameter of the upper opening ranges from 70 to 90 mm, the vertical distance between the lower opening and the upper opening ranges from 110 to 130 mm, the inner diameter of the lower opening ranges from 8 to 10 mm, and the protruding height ranges from 8 to 10 mm.

[0009] Optionally, the upper cover includes a first cover extension and a first mounting portion, the first mounting portion is fitted and mounted in the upper opening, and the first cover extension covers the upper opening.

[0010] The lower cover includes a second cover extension and a second mounting portion, the second mounting portion is fitted and mounted in the lower opening, and the second cover extension covers the lower opening.

[0011] Optionally, the diameter of the first cover extension ranges from 80 to 100 mm, and the protruding height of the first mounting portion ranges from 8 to 10 mm.

[0012] The diameter of the second cover extension ranges from 18 to 20 mm, and the protruding height of the second mounting portion ranges from 8 to 10 mm.

[0013] Optionally, it further includes a first electric valve and a second electric valve, the first electric valve is arranged on the first mounting portion, and the second electric valve is arranged on the second mounting portion.

[0014] Optionally, it further includes a first flow meter and a second flow meter, the first flow meter is arranged downstream of the first electric valve, and the second flow meter is arranged downstream of the second electric valve.

[0015] Optionally, the first mounting portion and the upper opening are connected by screw threads or press connection, and the second mounting portion and the lower opening are connected by screw threads or press connection.

[0016] Optionally, the container is a glass container, and the upper cover and the lower cover are rubber covers.

[0017] The beneficial effects of the utility model are as follows:

[0018] The glass container for containing lithium ion battery positive and negative electrode paste according to the utility model has the following advantages:

[0019] 1. Accurate sampling position: during the measurement of the viscosity and solid content of the lithium ion battery positive and negative electrode paste, the upper layer paste and the lower layer paste can be accurately sucked respectively, even if the height of the paste in the glass bottle has certain difference, the upper layer paste and the lower layer paste can also be accurately sucked.

[0020] 2. Good sealing: the glass container opening of the utility model has the sealing cover matched with it to seal it, which ensures good sealing performance. The good sealing performance can prevent slurry leakage and volatilization, and avoid harm to the environment and human body. At the same time, the sealing performance can also maintain the stability of the slurry, and ensure the smooth progress of the measurement process.

[0021] 3. Reliable results: using electric valves and flow meters for sampling can reduce manual intervention, reduce the influence of human factors on the sampling process, and improve the accuracy of measurement results.

[0022] 4. Simple operation: the lower layer of the glass container of the utility model is provided with an opening, and the structure design is reasonable, which can conveniently and accurately take out the slurry for measuring the lower layer solid content. This simple operation method helps to improve the experimental efficiency, and can ensure the stability and safety of the test process. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model provides a kind of whole structure schematic view of glass container of containing lithium ion battery positive and negative pole slurry for embodiment of the utility model;

[0024] Figure 2 The structure schematic view of container is provided for embodiment of the utility model;

[0025] Figure 3 The structure schematic view of upper top cover is provided for embodiment of the utility model;

[0026] Figure 4 The structure schematic view of lower top cover is provided for embodiment of the utility model.

[0027] In the drawing, 1, container;2, upper top cover;21, first cover extension;22, first mounting portion;3, lower top cover;31, second cover extension;32, second mounting portion;4, upper opening;5, lower opening;6, first electric valve;7, second electric valve;8, first flow meter;9, second flow meter. DETAILED DESCRIPTION

[0028] The utility model will be further described in detail in combination with specific embodiment, so that those skilled in the art can understand.

[0029] Figure 1 The whole structure schematic view of glass container of containing lithium ion battery positive and negative pole slurry is provided for embodiment of the utility model; Figure 2 The structure schematic view of container is provided for embodiment of the utility model; Figure 3 The structure schematic view of upper top cover is provided for embodiment of the utility model; Figure 4 The structure schematic view of lower top cover is provided for embodiment of the utility model.

[0030] CombineFigures 1-4 The utility model discloses a glass container for containing lithium ion battery positive and negative pole slurry, for containing positive and negative pole slurry, facilitating the sampling of upper layer slurry and lower layer slurry, including container 1, upper top cover 2 and lower top cover 3, container 1 top is provided with upper opening 4, and the side of container 1 is provided with lower opening 5, upper top cover 2 is detachably connected in upper opening 4, and lower top cover 3 is detachably connected in lower opening 5. The utility model discloses a glass container for containing lithium ion battery positive and negative pole slurry, and lithium ion battery positive and negative pole slurry is placed in container 1 inside, and after placing, upper layer slurry and lower layer slurry are generated, container 1 top is provided with upper opening 4, and upper top cover 2 is detachably connected in upper opening 4, when taking upper layer slurry, open upper top cover 2, and suck upper layer slurry. The side of container 1 is provided with lower opening 5, and lower top cover 3 is detachably connected in lower opening 5, when taking lower layer slurry, open lower top cover 3, and suck lower layer slurry. When sampling, first suck upper layer slurry, then suck lower layer slurry, avoid the risk of confusion of upper layer slurry into lower layer slurry, by setting lower opening 5 in the specified height position on the side wall of container 1, ensure that its opening position is set in the lower layer slurry area after static stratification, thereby ensure that upper layer slurry and lower layer slurry can be accurately sucked when opening upper opening 4 and lower opening 5, improve the accuracy of sampling and subsequent measurement data.

[0031] Optionally, the container 1 is cylindrical, the upper and lower inner diameters of the container 1 are 70-90 mm, and the height is 130-150 mm; the inner diameter of the upper opening 4 is 70-90 mm, the vertical distance between the lower opening 5 and the upper opening 4 is 110-130 mm, the inner diameter of the lower opening 5 is 8-10 mm, and the protruding height is 8-10 mm. Preferably, the upper and lower inner diameters of the container 1 are 80 mm, the height is 140 mm, the inner diameter of the upper opening 4 is 80 mm, the vertical distance between the lower opening 5 and the upper opening 4 is 120 mm, the inner diameter of the lower opening 5 is 10 mm, and the protruding height is 10 mm. In the utility model embodiment, the vertical distance between the lower opening 5 and the bottom of the container 1 is 20 mm, and when taking the lower layer slurry, it is necessary to ensure that the slurry at the position of the lower opening 5 is the lower layer slurry, and the lower layer slurry covers the lower opening 5 at least, so the volume of the lower layer slurry is ≥150.72 cm 3 , the total volume of the positive and negative pole slurry is less than the volume of the container 1, so the total volume of the positive and negative pole slurry is <703.36 cm 3 , generally, the total volume of the positive and negative pole slurry is 3 times of the lower layer slurry, so the volume of the lower layer slurry is ≤234.45 cm 3 , the total volume of the positive and negative pole slurry is ≥452.16 cm 3 , so the total volume V1 of the positive and negative pole slurry ranges from 452.16 cm 3 to 703.36 cm3 The volume V2 of the lower paste ranges from 150.72 cm 3 ≤V2≤234.45 cm 3 The volume of the positive and negative pastes meets the above requirements, ensuring accurate suction of the upper and lower pastes.

[0032] Optionally, the upper cover 2 comprises a first cover extension 21 and a first mounting portion 22, the first mounting portion 22 is fitted and mounted in the upper opening 4, and the first cover extension 21 covers the upper opening 4; the lower cover 3 comprises a second cover extension 31 and a second mounting portion 32, the second mounting portion 32 is fitted and mounted in the lower opening 5, and the second cover extension 31 covers the lower opening 5. Exemplarily, in the embodiment of the utility model, the first mounting portion 22 is fitted and mounted in the upper opening 4, so that the upper cover 2 seals the upper opening 4, and the second mounting portion 32 is fitted and mounted in the lower opening 5, so that the lower cover 3 seals the lower opening. The upper cover 2 and the lower cover 3 ensure good sealing performance of the container 1, and the good sealing performance can prevent leakage and volatilization of the positive and negative pastes, thereby avoiding harm to the environment and the human body. At the same time, the sealing performance can also maintain the stability of the positive and negative pastes, thereby ensuring smooth measurement.

[0033] Optionally, the diameter of the first cover extension 21 ranges from 80 mm to 100 mm, and the protruding height of the first mounting portion 22 ranges from 8 mm to 10 mm; the diameter of the second cover extension 31 ranges from 18 mm to 20 mm, and the protruding height of the second mounting portion 32 ranges from 8 mm to 10 mm. Preferably, the diameter of the first cover extension 21 is 90 mm, the protruding height of the first mounting portion 22 is 10 mm; the diameter of the second cover extension 31 is 20 mm, and the protruding height of the second mounting portion 32 is 10 mm. Exemplarily, in the embodiment of the utility model, the diameter of the first mounting portion 22 is consistent with the inner diameter of the upper opening 4, so that the connection between the first mounting portion 22 and the upper opening 4 is seamless, thereby ensuring the sealing performance of the container 1, and the diameter of the first cover extension 21 is greater than the diameter of the first mounting portion 22, so that the first cover extension 21 covers the upper opening 4. The diameter of the second mounting portion 32 is consistent with the inner diameter of the lower opening 5, so that the connection between the second mounting portion 32 and the lower opening 5 is seamless, thereby ensuring the sealing performance of the container 1, and the diameter of the second cover extension 31 is greater than the diameter of the second mounting portion 32, so that the second cover extension 31 covers the lower opening 5.

[0034] Optionally, the first electric valve 6 and the second electric valve 7 are further included, the first electric valve 6 is arranged on the first mounting portion 22, and the second electric valve 7 is arranged on the second mounting portion 32. In the embodiment of the utility model, the first electric valve 6 is installed to replace manual sampling of the upper layer slurry, and the second electric valve 7 is installed to replace manual sampling of the lower layer slurry, so that manual intervention can be reduced, the influence of human factors on the sampling process can be reduced, and the accuracy of the measurement result can be improved. When sampling, the upper layer slurry is first sucked through the first electric valve 6, and then the lower layer slurry is sucked through the second electric valve 7, so that the risk of mixing the upper layer slurry into the lower layer slurry can be avoided. Moreover, sampling can be performed without opening the upper cover 2 and the lower cover 3 through the electric valve, and the operation is more convenient.

[0035] Optionally, the first flow meter 8 and the second flow meter 9 are further included, the first flow meter 8 is arranged downstream of the first electric valve 6, and the second flow meter 9 is arranged downstream of the second electric valve 7. In the embodiment of the utility model, the first flow meter 8 is installed downstream of the first electric valve 6, so that the sampling amount of the upper layer slurry can be accurately controlled, the second flow meter 9 is installed downstream of the second electric valve 7, so that the sampling amount of the lower layer slurry can be accurately controlled, the waste caused by excessive sampling can be avoided, and the situation of secondary sampling caused by insufficient sampling can be avoided.

[0036] Optionally, the first mounting portion 22 and the upper opening 4 are connected through screw connection or pressing connection, and the second mounting portion 32 and the lower opening 5 are connected through screw connection or pressing connection. In the embodiment of the utility model, the first mounting portion 22 is detachably connected with the upper opening 4 through screw connection or pressing connection, so that the sealing performance of the upper cover 2 and the upper opening 4 is guaranteed, and the second mounting portion 32 is detachably connected with the lower opening 5 through screw connection or pressing connection, so that the sealing performance of the lower cover 3 and the lower opening 5 is guaranteed.

[0037] Optionally, the container 1 is a glass container, and the upper cover 2 and the lower cover 3 are rubber covers. In the embodiment of the utility model, the container 1 is a glass container, so that the situation of the positive and negative electrode slurries in the container 1 can be observed, the glass container has good barrier performance, can prevent oxygen and other gases from attacking the positive and negative electrode slurries, and can prevent volatile components in the positive and negative electrode slurries from volatilizing. The upper cover 2 and the lower cover 3 are rubber covers, the rubber cover has good elasticity and wear resistance and is not easy to be damaged, and the rubber cover has good acid and alkali resistance, so that the upper cover 2 and the lower cover 3 are prevented from being corroded by the positive and negative electrode slurries.

[0038] Other parts not described in detail are prior art. Although the above embodiment describes the utility model in detail, it is only a part of the embodiment of the utility model, not all the embodiments, and other embodiments can be obtained under the non-creative premise according to the embodiment, and these embodiments all belong to the protection range of the utility model.

Claims

1. A glass container for containing lithium ion battery positive and negative electrode slurry, for containing positive and negative electrode slurry, facilitating sampling of upper and lower layers of slurry, characterized in that: The container (1) is provided with an upper opening (4) at the top, and a lower opening (5) on the side; the upper cover (2) is detachably connected to the upper opening (4), and the lower cover (3) is detachably connected to the lower opening (5). ​ 2. The glass container of claim 1, wherein: The container (1) is cylindrical, and the inner diameter of the upper and lower bottoms of the container (1) ranges from 70 to 90 mm, and the height ranges from 130 to 150 mm; the inner diameter of the upper opening (4) ranges from 70 to 90 mm, the vertical distance between the lower opening (5) and the upper opening (4) ranges from 110 to 130 mm, the inner diameter of the lower opening (5) ranges from 8 to 10 mm, and the protruding height ranges from 8 to 10 mm.

3. The glass container of claim 2, wherein: The upper cover (2) includes a first cover extension (21) and a first mounting portion (22), the first mounting portion (22) is fitted and mounted in the upper opening (4), and the first cover extension (21) covers the upper opening (4); The lower cover (3) includes a second cover extension (31) and a second mounting portion (32), the second mounting portion (32) is fitted and mounted in the lower opening (5), and the second cover extension (31) covers the lower opening (5).

4. The glass container of claim 3, wherein: The diameter of the first cover extension (21) ranges from 80 to 100 mm, and the protruding height of the first mounting portion (22) ranges from 8 to 10 mm; The diameter of the second cover extension (31) ranges from 18 to 20 mm, and the protruding height of the second mounting portion (32) ranges from 8 to 10 mm.

5. The glass container of claim 4, wherein: It also includes a first electric valve (6) and a second electric valve (7), the first electric valve (6) is provided on the first mounting portion (22), and the second electric valve (7) is provided on the second mounting portion (32).

6. The glass container of claim 5, wherein: It also includes a first flow meter (8) and a second flow meter (9), the first flow meter (8) is arranged downstream of the first electric valve (6), and the second flow meter (9) is arranged downstream of the second electric valve (7).

7. The glass container of claim 6, wherein: The first mounting portion (22) and the upper opening (4), and the second mounting portion (32) and the lower opening (5) are connected by screw connection or pressing connection.

8. The glass container of claim 7, wherein: The container (1) is a glass container, and the upper cover (2) and the lower cover (3) are rubber covers.

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