CN110823752A - Solid content testing device for lithium ion battery slurry - Google Patents
Solid content testing device for lithium ion battery slurry Download PDFInfo
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- CN110823752A CN110823752A CN201911124031.7A CN201911124031A CN110823752A CN 110823752 A CN110823752 A CN 110823752A CN 201911124031 A CN201911124031 A CN 201911124031A CN 110823752 A CN110823752 A CN 110823752A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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Abstract
The invention relates to the field of lithium ion battery preparation, and discloses a lithium ion battery slurry solid content testing device which mainly comprises a lower die and an upper die, wherein a pouring opening is formed in the upper die, when the upper die is buckled on the lower die, a cavity is formed between the upper die and the lower die, the depths of all parts of the cavity are consistent, and the pouring opening is communicated with the cavity. The method for preparing the slurry film layer by applying the embodiment in the solid substance content test of the slurry can determine the uniformity of the thickness of the slurry film layer, is simple to operate, is beneficial to reducing the operation errors of personnel, improves the test precision of the solid substance content test of the slurry, and further improves the consistency of the lithium ion battery.
Description
Technical Field
The invention relates to the field of lithium ion battery preparation, and discloses a device for testing solid content of lithium ion battery slurry.
Background
The slurry is a core material in the lithium ion battery, and when the positive plate and the negative plate are prepared, the polar material is required to be prepared into the slurry, and the slurry is coated on the foil to form the pole piece. The solid matter content of the slurry is a key index influencing the pole piece coating process. Therefore, when preparing the slurry, the solid content of the current slurry needs to be tested to ensure the consistency of the solid content of each batch of slurry of the battery.
In the prior art, the determination of the solid matter content of the slurry is mainly to pour the slurry to be determined on the surface of a foil, so that the slurry can be automatically leveled on the surface of the foil or can be leveled by adopting vibration, a slurry film layer can be formed on the surface of the foil, then the foil (together with the leveled slurry film layer thereon) is placed in a drying chamber to be dried for a preset time, the foil is taken out, the dried mass is weighed, and the solid matter content of the current slurry can be obtained by comparing the mass of the slurry before drying and the mass of the dried film layer.
However, in the process of research of the invention, the following defects are found in the prior art:
1. in the prior art, the uniformity of the thickness of a slurry film layer formed on the surface of a foil is difficult to control, so that the drying uniformity is poor, and the content precision of the solid substance of the obtained current slurry is poor.
2. In the prior art, the sampling quantity of the slurry to be measured sampled in each batch is inconsistent, however, the precision of the quality measuring instrument is a fixed parameter, and the sampling quantity is different each time, so that the solid substance content precision of the slurry measured each time is inconsistent.
The consistency of the slurry adopted by each batch of lithium ion batteries is influenced, and the consistency of the batteries is further influenced.
Disclosure of Invention
One of the purposes of the embodiments of the present invention is to provide a device for testing a solid content of slurry of a lithium ion battery, which is used for preparing a slurry film layer by using the film preparation device of the present embodiment in a solid content test of the slurry, and is simple to operate, thereby being beneficial to reducing operation errors of personnel, improving test precision of the solid content test of the slurry, and further improving consistency of the lithium ion battery.
In a first aspect, an apparatus for testing a solid content of slurry for a lithium ion battery provided by an embodiment of the present invention includes:
a lower die;
the upper die is provided with a pouring opening, when the upper die is buckled on the lower die, a cavity is formed between the upper die and the lower die, the depth of each part of the cavity is consistent, and the pouring opening is communicated with the cavity.
Optionally, the top surface of the lower mold is a plane, and the bottom surface of the upper mold is a plane.
Optionally, a container is arranged on the top of the lower die,
when the upper die is hermetically buckled on the lower die, the bottom surface of the upper die is hermetically buckled at the top of the edge of the container.
Optionally, the bottom surface of the upper mold is a smooth surface.
Optionally, the inner surface of the container is smooth.
Optionally, a convex rib protruding from the bottom surface is formed at the bottom of the upper die,
the lower die is provided with a raised platform, the convex edge of the upper die is buckled on the periphery of the raised platform in a sealing manner, and the cavity is formed between the raised platform and the bottom surface of the upper die and the convex edge.
Optionally, a convex rib protruding from the bottom surface is formed at the bottom of the upper die,
the lower die is provided with a raised platform, the convex edge of the upper die is hermetically buckled on the top surface of the raised platform, and the cavity is formed between the raised platform and the bottom surface of the upper die and the convex edge.
Optionally, the top surface of the lower die and/or the bottom surface of the lower die are smooth surfaces; alternatively, the first and second electrodes may be,
the top surface of the lower die and/or the bottom surface of the lower die are rough surfaces.
Optionally, an electric heating device is further arranged below the top surface of the lower die.
Optionally, an electronic scale is further disposed at the bottom of the lower mold, and the lower mold is placed on the electronic scale.
It can be seen from the above that, the application principle of this embodiment technical scheme is that, when testing, will go up the mould lock on the bed die, form the fixed cavity of this embodiment, fill lithium ion battery thick liquids to the cavity through the infusion mouth of last mould, wherein this thick liquids can be anodal thick liquids or negative pole thick liquids. When the cavity is filled with the slurry and reaches the pouring opening, the pouring is stopped, and the thickness of the slurry in the cavity is consistent, so that the drying uniformity is improved, and the testing consistency of the slurry in each batch is ensured.
In conclusion, the technical scheme of the embodiment is applied to the solid content test of the lithium ion battery slurry, and has the following beneficial effects:
1. the measured slurry is the volume of the chamber 4, so that the consistency of the measured slurry amount can be ensured, the consistency of each measurement can be improved, and the difference of error ranges of each measurement caused by inconsistent measuring amount can be avoided.
2. The thickness of the slurry film layer formed by the scheme of the embodiment is uniform, the drying uniformity is higher, and the accuracy of testing the solid substance content of the slurry is improved.
3. By applying the technical scheme of the embodiment, the method is also beneficial to convenient and quick test, reduces personnel errors and improves the test stability of the solid substance content of the slurry.
Drawings
Fig. 1 is a schematic view of an assembly structure of a device for testing solid content of slurry of a lithium ion battery provided in embodiment 1 of the present invention;
FIG. 2 is a schematic view of the use configuration of FIG. 1;
fig. 3 is a schematic view of an assembly structure of another apparatus for testing solid content of slurry for a lithium ion battery provided in embodiment 1 of the present invention;
fig. 4 is a schematic diagram of the use structure of fig. 3.
Reference numerals:
1: a lower die; 2: an upper die; 3: an infusion port; 4: a chamber; 5: a container; 6: a raised platform; 7: a rib; 8: an electric heating device; 9: an electronic scale.
Detailed Description
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions of the present invention are provided to explain the present invention without limiting the invention thereto.
Example 1:
referring to fig. 1 to 4, the present embodiment provides a device for testing solid content of slurry of a lithium ion battery, which mainly includes: the lower mold 1 is located below the upper mold 2 is located above the lower mold 1, wherein the upper mold 2 includes a base, and a pouring opening 3 is provided on the upper mold 2, wherein the pouring opening 3 can be but is not limited to be formed on the top of the upper mold 2, when the upper mold 2 is fastened on the lower mold 1, a cavity 4 is formed between the lower mold 1 and the bottom surface of the upper mold 2, the depth of the cavity 4 is consistent, and the pouring opening 3 is communicated with the cavity 4.
The application principle of this embodiment technical scheme is that, during the test, with the sealed lock of upper mould 2 on lower mould 1, form the fixed cavity 4 of this embodiment, fill lithium ion battery thick liquids in to cavity 4 through the infusion mouth 3 of upper mould 2, wherein this thick liquids can be positive pole thick liquids or negative pole thick liquids. When the chamber 4 is filled with the slurry and reaches the pouring port 3, the pouring is stopped, and the thickness of the slurry in the chamber 4 is consistent, so that the drying uniformity is improved, and the testing consistency of the slurry in each batch is ensured.
In conclusion, the technical scheme of the embodiment is applied to the solid content test of the lithium ion battery slurry, and has the following beneficial effects:
1. the measured slurry is the volume of the chamber 4, so that the consistency of the measured slurry amount can be ensured, the consistency of each measurement can be improved, and the difference of error ranges of each measurement caused by inconsistent measuring amount can be avoided.
2. The thickness of the slurry film layer formed by the scheme of the embodiment is uniform, the drying uniformity is higher, and the accuracy of testing the solid substance content of the slurry is improved.
3. By applying the technical scheme of the embodiment, the method is also beneficial to convenient and quick test, reduces personnel errors and improves the test stability of the solid substance content of the slurry.
The upper die 2 and the lower die 1 are weighed together with the slurry in the cavity 4 as a whole, then the whole is placed into a baking chamber for baking, the slurry is uniformly baked after a preset period of time, then the whole is taken out and weighed again, and the weight of the dried slurry before and after the drying can be calculated according to the net weight of the upper die 2 and the lower die 1, so that the content of solid substances of the slurry is calculated.
Wherein, the bottom surface of mould 2, the top surface of bed die 1 respectively can be the rough surface, also preferably but not limited to be the smooth surface, adopt the smooth surface design further conveniently to take out the drier that is located cavity 4 after drying, improve the convenience of cleaning.
As an illustration of the present embodiment, but not limited to, the top surface of the lower mold 1 and the bottom surface of the upper mold 2 of the present embodiment are respectively designed to be flat surfaces, so as to form a flat cylindrical cavity 4, wherein the cross section of the cavity 4 perpendicular to the depth thereof may be circular, oval, or square or other shapes.
As an illustration of the present embodiment, the top surface of the lower mold 1 and the bottom surface of the upper mold 2 may be designed as curved surfaces having parallel shapes, respectively.
Referring to fig. 1, as an illustration of the present embodiment, a container 5 having a closed edge may be provided on the bottom of the lower mold 1, and the depth of the container 5 is uniform, so that, referring to fig. 2, when the upper mold 2 is sealingly fastened to the lower mold 1, the bottom surface of the upper mold 2 is sealingly fastened to the top of the edge of the container 5, and a cavity 4 is formed between the bottom surface of the upper mold 2 and the container 5.
In addition, the bottom surface of the upper die 2 can be designed to be a smooth surface, and after slurry is poured, the upper die 2 can be taken down, and almost no slurry is stuck to the bottom surface of the upper die 2 because the bottom surface of the upper die 2 is the smooth surface. Weighing the lower die 1 and the slurry in the container 5, then placing the lower die and the slurry in a drying chamber, drying the slurry for a preset time to uniformly dry the slurry, taking out the slurry, weighing the slurry again, and calculating the weight of the slurry before and after drying according to the net weight of the lower die 1 to obtain the content of solid substances of the slurry.
As an indication of this embodiment, the inner surface of the container 5 of the lower mold 1 may be designed to be a smooth surface, so that the dried material solidified in the container 5 can be taken out after drying, and the cleaning convenience is improved.
Referring to fig. 3, as an illustration of the present embodiment, a convex rib 7 protruding to the bottom may be further designed at the bottom of the upper mold 2, and a convex platform 6 is provided on the lower mold 1. Referring to fig. 4, when the upper mold 2 is fastened to the lower mold 1, the protruding rib 7 of the upper mold 2 is sealingly fastened to the outer periphery of the raised platform 6, and the raised platform 6 of the lower mold 1, the bottom surface of the upper mold 2 and the protruding rib 7 form the cavity 4 of the present embodiment. Can be the coarse surface with the design of the top surface of the protruding platform 6 of upper die 2 in this embodiment, make thick liquids glue tightly on its surface, will go up the bottom surface of mould 2 and bead 7 and all design for the smooth surface, can take off upper die 2 when drying, put into the drying chamber with lower die 1 and the thick liquids that bond on lower die 1 and dry. However, the upper mold 2 and the lower mold 1 may be placed in a drying chamber as a whole to be dried, and the top surface of the raised platform 6 of the upper mold 2, the bottom surface of the lower mold 1, and the rib 7 may be rough surfaces or smooth surfaces.
Referring to fig. 1 to 4, as an illustration of the present embodiment, an electric heating device 8, such as but not limited to a heating wire laid under the bottom surface of the lower mold 1, may be further designed in the lower mold 1, and heat of the heating wire is transferred to the bottom surface of the lower mold 1 to bake directly on the lower mold 1 without moving the lower mold 1, so as to improve convenience of the experiment.
Referring to fig. 1-4, as an illustration of the present embodiment, an electronic scale 9 is further disposed below the lower mold 1 to weigh the weight before and after drying without moving the lower mold 1, so as to improve the convenience of the experiment.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. A solid content testing device for lithium ion battery slurry is characterized by comprising:
a lower die;
the upper die is provided with a pouring opening, when the upper die is buckled on the lower die, a cavity is formed between the upper die and the lower die, the depth of each part of the cavity is consistent, and the pouring opening is communicated with the cavity.
2. The lithium ion battery slurry solid content testing device according to claim 1,
the top surface of the lower die is a plane, and the bottom surface of the upper die is a plane.
3. The lithium ion battery slurry solid content testing device according to claim 1,
a container is arranged at the top of the lower die,
when the upper die is hermetically buckled on the lower die, the bottom surface of the upper die is hermetically buckled at the top of the edge of the container.
4. The device for testing the solid content of the lithium ion battery slurry according to claim 3,
the bottom surface of the upper die is a smooth surface.
5. The device for testing the solid content of the lithium ion battery slurry according to claim 3,
the inner surface of the container is smooth.
6. The lithium ion battery slurry solid content testing device according to claim 1,
the bottom of the upper die is provided with a convex rib which is convex and has a bottom surface,
the lower die is provided with a raised platform, the convex edge of the upper die is buckled on the periphery of the raised platform in a sealing manner, and the cavity is formed between the raised platform and the bottom surface of the upper die and the convex edge.
7. The lithium ion battery slurry solid content testing device according to claim 1,
the bottom of the upper die is provided with a convex rib which is convex and has a bottom surface,
the lower die is provided with a raised platform, the convex edge of the upper die is hermetically buckled on the top surface of the raised platform, and the cavity is formed between the raised platform and the bottom surface of the upper die and the convex edge.
8. The lithium ion battery slurry solid content testing device according to claim 1,
the top surface of the lower die and/or the bottom surface of the lower die are smooth surfaces; alternatively, the first and second electrodes may be,
the top surface of the lower die and/or the bottom surface of the lower die are rough surfaces.
9. The device for testing the solid content of the lithium ion battery slurry according to claim 1, wherein an electric heating device is further arranged below the top surface of the lower die.
10. The device for testing the solid content of the lithium ion battery slurry according to claim 9, wherein an electronic scale is further arranged at the bottom of the lower die, and the lower die is placed on the electronic scale.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921930206 | 2019-11-08 | ||
| CN2019219302069 | 2019-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110823752A true CN110823752A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911124031.7A Pending CN110823752A (en) | 2019-11-08 | 2019-11-16 | Solid content testing device for lithium ion battery slurry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252506A (en) * | 2021-07-09 | 2021-08-13 | 新乡职业技术学院 | Battery thick liquids solid content testing arrangement |
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2019
- 2019-11-16 CN CN201911124031.7A patent/CN110823752A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252506A (en) * | 2021-07-09 | 2021-08-13 | 新乡职业技术学院 | Battery thick liquids solid content testing arrangement |
| CN113252506B (en) * | 2021-07-09 | 2021-09-24 | 新乡职业技术学院 | Battery thick liquids solid content testing arrangement |
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Application publication date: 20200221 |