CN204855331U - Lithium ion batteries cathode materials compacted density test fixture - Google Patents
Lithium ion batteries cathode materials compacted density test fixture Download PDFInfo
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- CN204855331U CN204855331U CN201520563080.1U CN201520563080U CN204855331U CN 204855331 U CN204855331 U CN 204855331U CN 201520563080 U CN201520563080 U CN 201520563080U CN 204855331 U CN204855331 U CN 204855331U
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Abstract
The utility model belongs to the technical field of the lithium ion battery material, a lithium ion batteries cathode materials compacted density test fixture is related to. The utility model discloses improvement unit volume's that can furthest battery capacity guarantees lithium ion cathode material compacted density measuring authenticity and science, has avoided the influence of human factor, makes the test result homogeneous stable. The utility model discloses a depression bar, die sleeve and base, depression bar are adorned in the through -hole of die sleeve, and the base has the blanking hole, and the sill bar is installed in the blanking hole, and the sill bar is located the through -hole below. The utility model has the advantages of simple structure, the test result is stable, has avoided the influence of human factor, has improved the science of lithium ion battery compacted density test.
Description
Technical field
The utility model belongs to lithium ion battery material technical field, relates to a kind of anode material for lithium-ion batteries compacted density proving installation.
Background technology
It is high that lithium ion battery has voltage, the feature such as specific energy density is high, have extended cycle life, memory-less effect, and environmental protection, pollution-free, is therefore widely used in the digital products such as mobile phone, notebook computer, panel computer and all kinds of portable product.Along with the development of society, the requirement of the stand-by time of people's logarithmic code electronic equipment is more and more higher, and provide the requirement of the lithium ion battery of energy to be also that weight is more and more lighter to electronic equipment, volume is more and more less.If the energy of lithium ion battery storage is higher under same volume, require that the compacted density of the pole piece of battery material is higher, unit volume capacity is higher.But the limited pressure degree of pole piece roll extrusion, pressure will damage pole piece too greatly.
At present, anode material for lithium-ion batteries uses tap density substantially, and the different personnel of tap density just differ greatly, and are difficult to the actual performance representing lithium ion battery material, so must find a kind of method of scientific and effective test material density.
Summary of the invention
For the problems referred to above, the utility model provides a kind of anode material for lithium-ion batteries compacted density measurement jig, improve the battery capacity of unit volume to greatest extent, ensure the authenticity that lithium ion anode material compacted density is measured and science, avoid the impact of human factor, make test result stable homogeneous.
To achieve these goals, the present invention adopts following technical scheme to realize:
A kind of anode material for lithium-ion batteries compacted density measurement jig, comprise depression bar, die sleeve and base, depression bar is contained in the through hole of die sleeve, and base is with material-dropping hole, and material-dropping hole is provided with bottom bar, and bottom bar is positioned at below through hole.
According to described anode material for lithium-ion batteries compacted density measurement jig, described bottom bar thickness is more than or equal to the material-dropping hole degree of depth, and the material-dropping hole degree of depth is more than or equal to the height of filling positive electrode in die sleeve.
According to described anode material for lithium-ion batteries compacted density measurement jig, with projection on described bottom bar, projection puts in inside the through hole of die sleeve.
According to described anode material for lithium-ion batteries compacted density measurement jig, depression bar top is with pressure cap, and the length of depression bar is greater than the height of die sleeve, and the material-dropping hole degree of depth is greater than institute's positive pressure pole material height, and the external diameter of bottom bar is 2 ~ 4 times of projection external diameter.
According to described anode material for lithium-ion batteries compacted density measurement jig, the length 5 ~ 20mm more than die sleeve height of depression bar.
According to described anode material for lithium-ion batteries compacted density measurement jig, described material-dropping hole depth ratio press the many 3 ~ 10mm of the height of positive electrode.
According to described anode material for lithium-ion batteries compacted density measurement jig, the material of all parts of described tool all adopts 304 or 316 stainless steels.
The utility model has that structure is simple, test result is stablized, and avoids the impact of human factor, improves the science of lithium ion battery compacted density test.
Accompanying drawing explanation
Fig. 1 is the structural representation of anode material for lithium-ion batteries compacted density measurement jig.
Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of this device.
In accompanying drawing: 1, depression bar, 2, die sleeve, 3, bottom bar, 4-base, 5-positive electrode, 6, projection, 7, material-dropping hole.
Embodiment
A kind of anode material for lithium-ion batteries compacted density measurement jig, comprises depression bar 1, die sleeve 2 and base 4.
With material-dropping hole 7 in base 4, bottom bar 3 is installed inside material-dropping hole 7.Bottom bar 3 is provided with projection 6, projection 6 is inserted in inside the through hole of die sleeve 2.Depression bar 1 is inserted in inside the through hole of die sleeve 2 from top.Closely cooperate between depression bar 1 and die sleeve 2, be filled with positive electrode 5, and do not have material and expose when binder operation.Depression bar 1, die sleeve 2 through hole and material-dropping hole 7 are all preferably set to cylindrical.Bottom bar 3 step plane is concordant with base 4 upper surface, and namely bottom bar 3 thickness equals material-dropping hole 7 degree of depth.
With pressure cap on depression bar 1, depression bar 1 is contained in die sleeve 2 through hole.The length of depression bar 1 is greater than die sleeve 2 height, and bottom bar 3 diameter is 2-4 times of projection 6 diameter.Depression bar 1 5-20mm longer than hole length in die sleeve 2.Base 4 with material-dropping hole 7, the large 3-10mm of depth ratio positive electrode 5 thickness of material-dropping hole 7.All parts materials of tool all adopt 304 or 316 stainless steels.
The method of anode material for lithium-ion batteries compacting tool test positive electrode compacted density is described below.
1. compacted density measurement jig is all used absolute ethyl alcohol wiped clean;
2. bottom bar 3 is put into the material-dropping hole 7 of base 4, then die sleeve 2 is inserted on projection 6;
3. take a certain amount of anode material for lithium-ion batteries and put into die sleeve 2;
4. in die sleeve 2, insert depression bar 1;
5. anode material for lithium-ion batteries 5 compaction test tool entirety is put into powder compressing machine and applied certain pressure, pressure size is determined according to pole piece rolling pressure size;
6. the bottom bar 3 of tool is taken out, apply pressure and the sample pressed is pressed in material-dropping hole 7;
7. take sample positive electrode 5 weight, and test diameter and height, calculate the compacted density of positive electrode 5.
Claims (7)
1. an anode material for lithium-ion batteries compacted density measurement jig, it is characterized in that: comprise depression bar (1), die sleeve (2) and base (4), depression bar (1) is contained in the through hole of die sleeve (2), base (4) is with material-dropping hole (7), material-dropping hole (7) is provided with bottom bar (3), and bottom bar (3) is positioned at below through hole.
2. anode material for lithium-ion batteries compacted density measurement jig according to claim 1, it is characterized in that: described bottom bar (3) thickness is more than or equal to material-dropping hole (7) degree of depth, material-dropping hole (7) degree of depth is more than or equal to the height of filling positive electrode in die sleeve (2).
3. anode material for lithium-ion batteries compacted density measurement jig according to claim 1, is characterized in that: with projection (6) on described bottom bar (3), projection (6) puts in inside the through hole of die sleeve (2).
4. anode material for lithium-ion batteries compacted density measurement jig according to claim 3, it is characterized in that: depression bar (1) top is with pressure cap, the length of depression bar (1) is greater than the height of die sleeve (2), material-dropping hole (7) degree of depth is greater than pressed positive electrode (5) highly, and the external diameter of bottom bar (3) is 2 ~ 4 times of projection (6) external diameter.
5. anode material for lithium-ion batteries compacted density measurement jig according to claim 4, is characterized in that: the length 5 ~ 20mm more than die sleeve (2) height of depression bar (1).
6. anode material for lithium-ion batteries compacted density measurement jig according to claim 4, is characterized in that: described material-dropping hole (7) depth ratio press the many 3 ~ 10mm of height of positive electrode (5).
7. anode material for lithium-ion batteries compacted density measurement jig according to claim 1, is characterized in that: the material of all parts of described tool all adopts 304 or 316 stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563080.1U CN204855331U (en) | 2015-07-30 | 2015-07-30 | Lithium ion batteries cathode materials compacted density test fixture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563080.1U CN204855331U (en) | 2015-07-30 | 2015-07-30 | Lithium ion batteries cathode materials compacted density test fixture |
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| CN204855331U true CN204855331U (en) | 2015-12-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380777A (en) * | 2018-12-28 | 2020-07-07 | 天津国安盟固利新材料科技股份有限公司 | Measuring die and testing method for lithium ion battery anode material powder compaction density |
| CN114279893A (en) * | 2021-12-22 | 2022-04-05 | 安徽博石高科新材料股份有限公司 | Method for testing compacted density of positive electrode material |
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2015
- 2015-07-30 CN CN201520563080.1U patent/CN204855331U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380777A (en) * | 2018-12-28 | 2020-07-07 | 天津国安盟固利新材料科技股份有限公司 | Measuring die and testing method for lithium ion battery anode material powder compaction density |
| CN114279893A (en) * | 2021-12-22 | 2022-04-05 | 安徽博石高科新材料股份有限公司 | Method for testing compacted density of positive electrode material |
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| C14 | Grant of patent or utility model | ||
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Address after: 277800 No. x6699, Guangming Road, high tech Zone, Zaozhuang City, Shandong Province (north of the junction of Guangming Road and Huaxin Road) Patentee after: Shandong Jinggong Electronic Technology Co.,Ltd. Address before: 277000 Haite Electronics Group, Fuyuan 5th Road, Thailand Industrial Park, High tech Zone, Zaozhuang City, Shandong Province Patentee before: Shandong Seiko Electronic Technology Co.,Ltd. |