CN116005041A - Aluminum foil material for oxidation-resistant easy-to-mold new energy lithium ion soft package battery and preparation method thereof - Google Patents
Aluminum foil material for oxidation-resistant easy-to-mold new energy lithium ion soft package battery and preparation method thereof Download PDFInfo
- Publication number
- CN116005041A CN116005041A CN202310024330.3A CN202310024330A CN116005041A CN 116005041 A CN116005041 A CN 116005041A CN 202310024330 A CN202310024330 A CN 202310024330A CN 116005041 A CN116005041 A CN 116005041A
- Authority
- CN
- China
- Prior art keywords
- aluminum foil
- rolling
- foil material
- controlled
- oxidation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 87
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 239000011888 foil Substances 0.000 title claims abstract description 72
- 239000000463 material Substances 0.000 title claims abstract description 56
- 230000003647 oxidation Effects 0.000 title claims abstract description 25
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 25
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 49
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 20
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 239000010731 rolling oil Substances 0.000 claims abstract description 14
- 238000005097 cold rolling Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005554 pickling Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- -1 aluminum ions Chemical class 0.000 claims description 5
- 238000007127 saponification reaction Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000012467 final product Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- HZNVUJQVZSTENZ-UHFFFAOYSA-N 2,3-dichloro-5,6-dicyano-1,4-benzoquinone Chemical compound ClC1=C(Cl)C(=O)C(C#N)=C(C#N)C1=O HZNVUJQVZSTENZ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Metal Rolling (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention provides an oxidation-resistant easy-to-mold aluminum foil material for a new energy lithium ion soft package battery and a preparation method thereof, and the preparation method comprises the following steps: s1, preparing alloy components; s2, preparing woolen: comprises casting rolling and cold rolling; s3, finish rolling: 3 times of rolling are carried out on the rough material obtained in the step S2, and finally, the finish rolling pass adopts rolling by coiling, and the rolling oil temperature, the brightness value of the bright surface and the brightness value of the matte surface are controlled; s4, oxidation and online heat treatment; the aluminum foil material for the new energy lithium ion soft package battery can meet the service characteristics of high deep drawing and lithium batteries by optimizing the proportion of alloy elements, the online aluminum melt quality treatment and filtration technology and the heat treatment process of the cold rolling process, and the aluminum foil material is subjected to performance detection, so that the finished product has the Vickers hardness of 60-65Hv, the tensile strength of 85-105Mpa, the elongation of more than or equal to 25%, the cupping value of 7.5-8.2mm, the oxide film thickness of 3-5 mu m and the sodium hydroxide resistance time of more than or equal to 2 s.
Description
Technical Field
The invention relates to an oxidation-resistant easy-to-mold aluminum foil material for a new energy lithium ion soft package battery and a preparation method thereof.
Background
The soft package lithium battery is formed by sleeving a layer of polymer shell on a liquid lithium ion battery, structurally adopting an aluminum plastic film for packaging, and only blowing gas of the soft package battery is split at most under the condition of potential safety hazard. The aluminum foil material for the soft-packed battery is a coat of the soft-packed battery, plays a role in protecting a battery core, has extremely harsh service environment, has excellent mechanical properties, can be processed into a shape required by a customer and has processability, and has oxidation resistance because the aluminum foil material needs to be soaked in electrolyte, namely potassium hexafluorophosphate and DMC organic solvent.
In order to solve the above problems, a strategy of increasing the thickness of the aluminum foil material is generally adopted, but as the requirements of the public on the endurance time of the soft package lithium battery are more and more strict, increasing the thickness of the aluminum foil material means that the space for storing the battery cells is compressed, so that the aluminum foil material needs to have excellent forming performance at the same time on the premise of not increasing the thickness of the aluminum foil material. The traditional method for preparing the aluminum foil material for the new energy lithium ion soft package battery is a method combining hot rolling and cold rolling, and the prior art can not meet the current requirement on the performance of the aluminum foil.
Disclosure of Invention
In order to improve the oxidation resistance and excellent forming performance of the aluminum foil material, the invention provides an oxidation-resistant easy-to-form aluminum foil material for a new energy lithium ion soft package battery and a preparation method thereof, and the specific scheme is as follows:
the preparation method of the aluminum foil material for the oxidation-resistant easy-to-mold new energy lithium ion soft package battery comprises the following steps:
s1, preparing alloy components: preparing an alloy according to the proportion of alloy elements Fe, si, ti, cu, al;
s2, preparing woolen: casting, rolling and cold rolling the alloy prepared in the step S1 to obtain a blank with the thickness of 0.24-0.35 mm;
s3, finish rolling: 3 times of rolling are carried out on the rough material obtained in the step S2, and finally, the rolling oil temperature, the brightness value of the bright surface and the brightness value of the matte surface are controlled by adopting rolling in a rolling mode in a finish rolling mode, so that an aluminum foil with the thickness of 0.035-0.055 mm is obtained;
s4, oxidation and online heat treatment: and transferring the aluminum foil obtained by finish rolling into an oxide film production line, passing through a first-stage washing tank, a pickling tank and a second-stage washing tank, and rolling after passing through a stepped 3-section oven.
According to metallographic analysis of the material, the deep drawing performance of the material is closely related to the size and distribution of second-phase particles in a metallographic structure, the size and distribution of the second-phase particles can be reasonably controlled, the deep drawing performance of the material can be effectively improved, and the comprehensive performance of the final aluminum foil material is improved by properly adding Cu.
Further, the proportion of the alloy elements in S1 is Fe 1.4-1.5%; si 0.03-0.05%; ti0.01-0.02%; cu is 0.002-0.0035%; the balance being Al.
Further, the pass power in the finish rolling of S3 is controlled at 55%, the double oil index in the coil winder is a mixture of No. 65 rolling oil and additives, and the saponification value index of the additives is 3.5-5.5 mgKOH/g.
Further, the rolling working roller in the S3 finish rolling adopts middle convexity, the convexity is 6 per mill mm, the rolling oil temperature is controlled at 40-43 ℃, the brightness value of the bright surface is controlled at 25-28, and the brightness value of the matte surface is controlled at 30-33.
Further, the temperature of the first-stage washing tank in the S4 is controlled to be 50+/-3 ℃, the temperature of the second-stage water tank is controlled to be 60+/-3 ℃, the concentration of sulfuric acid solution in the washing tank is 100-120 g/L, the concentration of aluminum ions in the washing tank is 15-18 g/L, the temperature is 20-23 ℃, and the current density is 3.2-5.5A/dm 2 。
Further, the temperature of the first-stage oven is controlled to be 200+/-2 ℃, and the aluminum foil is kept in the oven for 15 seconds; the temperature of the second-stage oven is controlled to be (220-230) +/-2 ℃, and the aluminum foil is kept in the oven for 20s; the temperature of the third-stage oven is controlled at 180+/-2 ℃, and the aluminum foil is kept in the oven for 10 seconds.
The aluminum foil material for the lithium ion soft package battery, which is prepared by any preparation method, has the thickness of an oxide film of a finished product of the aluminum foil material of 3-5 mu m, the sodium hydroxide resistance time of more than or equal to 2s, the Vickers hardness of 60-65HV, the tensile strength of 85-105MPa, the elongation of more than or equal to 25 percent and the cupping value of 7.5-8.2 mm.
The beneficial effects are that:
the invention provides an oxidation-resistant easy-to-mold aluminum foil material for a new energy lithium ion soft-package battery and a preparation method thereof, which are different from the traditional mode of combining hot rolling and cold rolling, and have the following advantages:
(1) On one hand, the granular phase is solid-solved in an aluminum matrix to form solid-solution strengthening by optimizing the proportion of alloy elements and adding Cu element, so that the strength and the Vickers hardness of the material are improved; on the other hand, al 2 The Cu phase is used as a nucleation core of the recrystallized new crystal grains, which is favorable for refining the matrix structure, thereby improving the comprehensive performance of the material;
(2) The surface of the aluminum foil material is enabled to obtain a compact oxide film by utilizing a sulfuric acid oxidation process, so that the antioxidation capability of the material is improved, the thickness of the oxide film of a finished product obtained finally is 3-5 mu m, the corrosion of electrolyte can be weakened, and meanwhile, the aluminum foil material is prevented from being damaged when the electrolyte is infiltrated;
(3) In the finish rolling process, the double oil index in the coil winder is a mixture of No. 65 rolling oil and additives, and excellent matte surface performance index is obtained by adding a small amount of additives, wherein the brightness value of a bright surface is controlled to be 25-28, and the brightness value of the matte surface is controlled to be 30-33, so that the brightness of the bright surface and the matte surface are close to each other, and the material is better consistent;
(4) By utilizing an online heat treatment technology, the mechanical property of the aluminum foil is controlled in the drying process, and the traditional box annealing requires more than 150 hours, so that the energy and time are greatly saved, the production efficiency is improved, and the production cost is reduced;
in conclusion, through the accurate proportioning of alloy elements, the online aluminum melt quality treatment and filtration technology and the optimization of the heat treatment process in the cold rolling process, the aluminum foil material for the new energy lithium ion soft package battery can meet the service characteristics of high deep drawing and lithium batteries, and meanwhile, the aluminum foil material for the new energy lithium ion soft package battery has excellent mechanical properties, is convenient for subsequent deep drawing and has no cracks, the Vickers hardness of the finished product is 60-65Hv, the tensile strength is 85-105Mpa, the elongation is more than or equal to 25%, the cupping value is 7.5-8.2mm, the oxide film thickness is 3-5 mu m, and the sodium hydroxide resistant time is more than or equal to 2 s.
Detailed Description
The present invention will be further described in detail with reference to examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.
Example 1:
the preparation method of the aluminum foil material for the oxidation-resistant easy-to-mold new energy lithium ion soft package battery comprises the following steps:
s1, preparing alloy components: according to the content of Fe of 1.4%, si of 0.03%, ti of 0.01%, cu of 0.002%, and the balance of aluminum, wherein the sum of Fe, si, cu, ti and Al is 100% by weight. And (5) performing alloy element proportioning.
S2, preparing woolen: the above components were subjected to casting and cold rolling to obtain a 0.24mm billet.
S3, finish rolling: 3 passes of rolling were performed on the 0.24mm wool to give a 0.035-mm aluminum foil. Wherein the final finish rolling pass adopts rolling by rolling, the pass processing rate is controlled at 55%, the double oil index in the rolling machine is the mixture of No. 65 rolling oil and additive, and the saponification value index of the additive is 3.5-mgKOH/g. The rolling working roll adopts a convex roll, the convexity is 6 per mill mm, the rolling oil temperature is controlled at 40-DEG C, the brightness value of the bright surface is controlled at 25, and the brightness value of the matte surface is controlled at 30.
S4, oxidation and online heat treatment: the aluminum foil with the thickness of 0.035mm is transferred into an oxide film production line, passes through a first-stage washing tank, a pickling tank and a second-stage washing tank, passes through a stepped 3-section oven, and is then rolled. Wherein the water temperature of the first-stage washing tank is 50+/-3 ℃, the temperature of the second-stage water tank is 60+/-3 ℃, the concentration of sulfuric acid solution in the pickling tank is 100g/L, the temperature of aluminum ions is 15g/L, the current density is 3.2A/dm < 2 >, and a compact oxide film 5 mu m on the surface layer of the aluminum foil material is obtained; the temperature of the first-stage oven is 200+/-2 ℃, and the aluminum foil is kept in the oven for 15s; the temperature of the second-stage oven is 220+/-2 ℃, and the aluminum foil is kept in the oven for 20s; the third stage oven temperature was 180±2 ℃, and the aluminum foil was kept in the oven for 10s.
The aluminum foil material finally obtained in example 1 was subjected to performance test, and the final product had a Vickers hardness of 60Hv, a tensile strength of 85MPa, an elongation of 26%, a cupping value of 8.2mm, an oxide film thickness of 5 μm and a sodium hydroxide resistance time of 2.5s.
Example 2:
the preparation method of the aluminum foil material for the oxidation-resistant easy-to-mold new energy lithium ion soft package battery comprises the following steps:
s1, preparing alloy components: according to the content of Fe of 1.5%, si of 0.05%, ti of 0.02%, cu of 0.0035% and the balance of aluminum, wherein the sum of Fe, si, cu, ti and Al is 100%. And (5) performing alloy element proportioning.
S2, preparing woolen: the above components were subjected to casting and cold rolling to obtain a 0.35mm billet.
S3, finish rolling: 3 passes of rolling were performed on the 0.35mm wool to give a 0.055mm aluminum foil. Wherein the final finish rolling pass adopts rolling by rolling, the pass processing rate is controlled at 55%, the double oil index in the rolling machine is the mixture of No. 65 rolling oil and additive, and the saponification value index of the additive is 5.5mgKOH/g. The rolling working roll adopts a convex roll, the convexity is 6 per mill mm, the rolling oil temperature is controlled at 43 ℃, the brightness value of the bright surface is controlled at 28, and the brightness value of the matte surface is controlled at 33.
S4, oxidation and online heat treatment: the aluminum foil with the thickness of 0.055mm is transferred into an oxide film production line, passes through a first-stage washing tank, a pickling tank and a second-stage washing tank, passes through a stepped 3-section oven, and is then rolled. Wherein the water temperature of the first-stage washing tank is 50+/-3 ℃, the temperature of the second-stage water tank is 60+/-3 ℃, the concentration of sulfuric acid solution in the pickling tank is 120g/L, the temperature of aluminum ions is 18g/L, the temperature is 23 ℃, and the current density is 5.5A/dm < 2 >, so that a compact oxide film 3 mu m on the surface layer of the aluminum foil material is obtained; the temperature of the first-stage oven is 200+/-2 ℃, and the aluminum foil is kept in the oven for 15s; the temperature of the second-stage oven is 230+/-2 ℃, and the aluminum foil is kept in the oven for 20s; the third stage oven temperature was 180±2 ℃, and the aluminum foil was kept in the oven for 10s.
The aluminum foil material finally obtained in example 2 was subjected to performance test, and the final product had a Vickers hardness of 65Hv, a tensile strength of 105MPa, an elongation of 25.5%, a cupping value of 7.5mm, an oxide film thickness of 3-5 μm and a sodium hydroxide resistance time of 2.8s.
Example 3:
the preparation method of the aluminum foil material for the oxidation-resistant easy-to-mold new energy lithium ion soft package battery comprises the following steps:
s1, preparing alloy components: according to the content of Fe of 1.45%, si of 0.04%, ti of 0.015%, cu of 0.0028% and the balance of aluminum, wherein the sum of Fe, si, cu, ti and Al is 100% by weight. And (5) performing alloy element proportioning.
S2, preparing woolen: the above components were subjected to casting and cold rolling to obtain a 0.3mm billet.
S3, finish rolling: 3 passes of rolling were performed on the 0.3mm wool to give a 0.045mm aluminum foil. Wherein the final finish rolling pass adopts rolling by rolling, the pass processing rate is controlled at 55%, the double oil index in the rolling machine is the mixture of No. 65 rolling oil and additive, and the saponification value index of the additive is 4.2mgKOH/g. The rolling working roll adopts a convex roll, the convexity is 6 per mill mm, the rolling oil temperature is controlled at 41.5 ℃, the brightness value of the bright surface is controlled at 26.5, and the brightness value of the matte surface is controlled at 31.5.
S4, oxidation and online heat treatment: the aluminum foil with the thickness of 0.045mm is transferred into an oxide film production line, passes through a first-stage washing tank, a pickling tank and a second-stage washing tank, passes through a stepped 3-section oven, and is then rolled. Wherein the water temperature of the first-stage washing tank is 50+/-3 ℃, the temperature of the second-stage water tank is 60+/-3 ℃, the concentration of sulfuric acid solution in the pickling tank is 110g/L, the temperature of aluminum ions is 16.5g/L, the temperature is 21.5 ℃, and the current density is 4.3A/dm < 2 >, so that a compact oxide film on the surface layer of the aluminum foil material is 4 mu m; the temperature of the first-stage oven is 200+/-2 ℃, and the aluminum foil is kept in the oven for 15s; the temperature of the second-stage oven is 225+/-2 ℃, and the aluminum foil is kept in the oven for 20s; the third stage oven temperature was 180±2 ℃, and the aluminum foil was kept in the oven for 10s.
The aluminum foil material finally obtained in example 3 was subjected to performance test, and the final product had a Vickers hardness of 62.5Hv, a tensile strength of 95MPa, an elongation of 25.6%, a cupping value of 7.8mm, an oxide film thickness of 4 μm and a sodium hydroxide resistance time of 2.3s.
In summary, the aluminum foil material prepared by the preparation method has a cupping value range of 7.5-8.2mm, the cupping value is used for measuring the forming property of the aluminum foil material, the larger the cupping value is, the more excellent the forming property of the material is, and the aluminum foil material prepared in the embodiment shows excellent forming property; meanwhile, the thickness of the oxide film of the finished product is 3-5 mu m, so that the corrosion of the electrolyte is weakened, and the aluminum foil material is prevented from being damaged when the electrolyte is infiltrated.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The preparation method of the aluminum foil material for the oxidation-resistant easy-to-mold new energy lithium ion soft package battery is characterized by comprising the following steps of:
s1, preparing alloy components: preparing an alloy according to the proportion of alloy elements Fe, si, ti, cu, al;
s2, preparing woolen: casting, rolling and cold rolling the alloy prepared in the step S1 to obtain a blank with the thickness of 0.24-0.35 mm;
s3, finish rolling: 3 times of rolling are carried out on the rough material obtained in the step S2, and finally, the rolling oil temperature, the brightness value of the bright surface and the brightness value of the matte surface are controlled by adopting rolling in a rolling mode in a finish rolling mode, so that an aluminum foil with the thickness of 0.035-0.055 mm is obtained;
s4, oxidation and online heat treatment: and transferring the aluminum foil obtained by finish rolling into an oxide film production line, passing through a first-stage washing tank, a pickling tank and a second-stage washing tank, and rolling after passing through a stepped 3-section oven.
2. The preparation method of the aluminum foil material for the oxidation-resistant easy-to-mold new energy lithium ion soft-package battery, which is disclosed in claim 1, is characterized in that the proportion of alloy elements in S1 is Fe 1.4-1.5%; si0.03-0.05%; 0.01 to 0.02 percent of Ti; cu is 0.002-0.0035%; the balance being Al.
3. The preparation method of the aluminum foil material for the oxidation-resistant and easy-to-mold new energy lithium ion soft package battery, which is disclosed in claim 1, is characterized in that the pass power in the S3 finish rolling is controlled to be 55%, the double oil index in a coil winder is a mixture of No. 65 rolling oil and additives, and the saponification value index of the additives is 3.5-5.5 mgKOH/g.
4. The preparation method of the aluminum foil material for the oxidation-resistant and easy-to-mold new energy lithium ion soft package battery, which is disclosed in claim 1, is characterized in that a rolling working roller in S3 finish rolling adopts a convexity, the convexity is 6 per mill mm, the rolling oil temperature is controlled to be 40-43 ℃, the brightness value of a bright surface is controlled to be 25-28, and the brightness value of a matte surface is controlled to be 30-33.
5. The preparation method of the aluminum foil material for the oxidation-resistant and easy-to-mold new energy lithium ion soft-package battery, which is disclosed in claim 1, is characterized in that the temperature of a first-stage water washing tank in S4 is controlled to be 50+/-3 ℃, the temperature of a second-stage water tank is controlled to be 60+/-3 ℃, the concentration of sulfuric acid solution in the acid washing tank is 100-120 g/L, the concentration of aluminum ions is 15-18 g/L, the temperature is 20-23 ℃, and the current density is 3.2-5.5A/dm 2 。
6. The preparation method of the aluminum foil material for the oxidation-resistant easy-to-mold new energy lithium ion soft package battery, which is disclosed in claim 1, is characterized in that the temperature of a first-stage oven is controlled to be 200+/-2 ℃, and the aluminum foil is kept in the oven for 15s; the temperature of the second-stage oven is controlled to be (220-230) +/-2 ℃, and the aluminum foil is kept in the oven for 20s; the temperature of the third-stage oven is controlled at 180+/-2 ℃, and the aluminum foil is kept in the oven for 10 seconds.
7. The aluminum foil material for lithium ion soft package battery prepared by the preparation method according to any one of claims 1 to 6, wherein the thickness of an oxide film of a finished product of the aluminum foil material is 3 to 5 mu m, the sodium hydroxide resistant time is more than or equal to 2s, the Vickers hardness is 60 to 65HV, the tensile strength is 85 to 105MPa, the elongation is more than or equal to 25%, and the cupping value is 7.5 to 8.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310024330.3A CN116005041B (en) | 2023-01-09 | 2023-01-09 | Aluminum foil material for oxidation-resistant easy-to-mold new energy lithium ion soft package battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310024330.3A CN116005041B (en) | 2023-01-09 | 2023-01-09 | Aluminum foil material for oxidation-resistant easy-to-mold new energy lithium ion soft package battery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116005041A true CN116005041A (en) | 2023-04-25 |
| CN116005041B CN116005041B (en) | 2024-08-27 |
Family
ID=86035317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310024330.3A Active CN116005041B (en) | 2023-01-09 | 2023-01-09 | Aluminum foil material for oxidation-resistant easy-to-mold new energy lithium ion soft package battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116005041B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05200406A (en) * | 1992-01-27 | 1993-08-10 | Showa Alum Corp | Production of aluminum foil for electrolytic capacitor |
| JP2001288525A (en) * | 2000-03-31 | 2001-10-19 | Kobe Steel Ltd | Aluminum alloy foil base and its producing method |
| JP2011241410A (en) * | 2010-05-14 | 2011-12-01 | Sumitomo Light Metal Ind Ltd | Aluminum alloy foil for lithium ion battery electrode current collector |
| CN102329985A (en) * | 2011-06-14 | 2012-01-25 | 刘继福 | Aluminum foil for flexible package of polymer lithium ion battery |
| CN202830177U (en) * | 2012-09-14 | 2013-03-27 | 浙江联鑫板材科技有限公司 | Alloy plate material or strip material continuous acid-washing unit |
| JP2014040659A (en) * | 2012-07-26 | 2014-03-06 | Mitsubishi Alum Co Ltd | Manufacturing method of aluminum alloy foil for lithium ion secondary battery positive electrode collector, aluminum alloy foil for lithium ion secondary battery positive electrode collector, and lithium ion secondary battery |
| JP2014065956A (en) * | 2012-09-27 | 2014-04-17 | Kobe Steel Ltd | Aluminum alloy foil for lithium battery outer packaging and its manufacturing method |
| CN106191544A (en) * | 2016-08-10 | 2016-12-07 | 河南明泰铝业股份有限公司 | A kind of lithium battery is by 8021 Soft Roll aluminium foil and production methods thereof |
| CN110218912A (en) * | 2019-06-25 | 2019-09-10 | 江苏大亚铝业有限公司 | Lithium battery 12 μm of two-sided light high performance A1235 alloy aluminium foils and its preparation process |
| CN111349825A (en) * | 2020-04-26 | 2020-06-30 | 江苏鼎胜新能源材料股份有限公司 | Preparation method for producing high-toughness battery aluminum foil by using short-process casting and rolling blank |
| WO2022160409A1 (en) * | 2021-01-28 | 2022-08-04 | 永杰新材料股份有限公司 | Processing method for battery aluminum foil |
-
2023
- 2023-01-09 CN CN202310024330.3A patent/CN116005041B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05200406A (en) * | 1992-01-27 | 1993-08-10 | Showa Alum Corp | Production of aluminum foil for electrolytic capacitor |
| JP2001288525A (en) * | 2000-03-31 | 2001-10-19 | Kobe Steel Ltd | Aluminum alloy foil base and its producing method |
| JP2011241410A (en) * | 2010-05-14 | 2011-12-01 | Sumitomo Light Metal Ind Ltd | Aluminum alloy foil for lithium ion battery electrode current collector |
| CN102329985A (en) * | 2011-06-14 | 2012-01-25 | 刘继福 | Aluminum foil for flexible package of polymer lithium ion battery |
| JP2014040659A (en) * | 2012-07-26 | 2014-03-06 | Mitsubishi Alum Co Ltd | Manufacturing method of aluminum alloy foil for lithium ion secondary battery positive electrode collector, aluminum alloy foil for lithium ion secondary battery positive electrode collector, and lithium ion secondary battery |
| CN202830177U (en) * | 2012-09-14 | 2013-03-27 | 浙江联鑫板材科技有限公司 | Alloy plate material or strip material continuous acid-washing unit |
| JP2014065956A (en) * | 2012-09-27 | 2014-04-17 | Kobe Steel Ltd | Aluminum alloy foil for lithium battery outer packaging and its manufacturing method |
| CN106191544A (en) * | 2016-08-10 | 2016-12-07 | 河南明泰铝业股份有限公司 | A kind of lithium battery is by 8021 Soft Roll aluminium foil and production methods thereof |
| CN110218912A (en) * | 2019-06-25 | 2019-09-10 | 江苏大亚铝业有限公司 | Lithium battery 12 μm of two-sided light high performance A1235 alloy aluminium foils and its preparation process |
| CN111349825A (en) * | 2020-04-26 | 2020-06-30 | 江苏鼎胜新能源材料股份有限公司 | Preparation method for producing high-toughness battery aluminum foil by using short-process casting and rolling blank |
| WO2022160409A1 (en) * | 2021-01-28 | 2022-08-04 | 永杰新材料股份有限公司 | Processing method for battery aluminum foil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116005041B (en) | 2024-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108315606B (en) | 1100 alloy aluminum foil for lithium battery and manufacturing method thereof | |
| CN111793759B (en) | 1070 high-performance aluminum foil for lithium ion battery and preparation method thereof | |
| CN101935786B (en) | Stabilizing processing method of 5052 aluminium alloy | |
| CN111270109B (en) | Method for producing 8021 aluminum alloy soft packaging foil for lithium battery by cast rolling method | |
| CN112251652B (en) | Production method of aluminum foil for high-elongation lithium ion battery | |
| CN110714147B (en) | 6082 aluminum alloy plate for aviation and preparation process thereof | |
| CN110629083B (en) | Marine 5083 aluminum alloy plate and preparation process thereof | |
| CN110093536B (en) | 6101-T63 state aluminum alloy coiled material for battery guide plate and preparation method thereof | |
| CN111118351B (en) | High-performance aluminum foil for lithium ion battery flexible package aluminum plastic film and preparation method thereof | |
| CN114525390A (en) | Production method of copper-tin alloy strip | |
| CN116005041B (en) | Aluminum foil material for oxidation-resistant easy-to-mold new energy lithium ion soft package battery and preparation method thereof | |
| CN102489505B (en) | Cold-rolled steel strip and production method thereof, and anode plate material for electric dust removing device | |
| CN101789314A (en) | Aluminum foil for low-voltage electrolytic capacitor anode and production method thereof | |
| CN111195657B (en) | Electronic aluminum foil composite material and electronic aluminum foil prepared from same | |
| CN114411017B (en) | Aluminum foil for 1200 lithium battery and preparation method thereof | |
| CN115323223A (en) | Processing method for preparing foil blank of 1235 aluminum alloy new energy battery | |
| CN111850353B (en) | 5G novel aluminum strip for capacitor shell and preparation method thereof | |
| CN114293100A (en) | Ultra-low iron loss non-oriented silicon steel thin strip and preparation method thereof | |
| CN112708814A (en) | Magnesium-lithium alloy with excellent corrosion resistance and deformation performance and rolling deformation process | |
| CN114381636B (en) | Aluminum foil for 1100C lithium battery and preparation method thereof | |
| CN117305670B (en) | 6000 series aluminum alloy plate with high baking strength and preparation method thereof | |
| CN115354198B (en) | Preparation method of battery case aluminum sheet for marine ship industry | |
| CN116574984A (en) | Manufacturing method of 6082 alloy T6 state coil heat treatment aging | |
| CN115821128A (en) | High-formability aluminum alloy bipolar plate substrate and preparation method thereof | |
| CN115537609A (en) | Preparation method of aluminum foil for lithium ion battery and aluminum foil for lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |