JP2020167029A - Manufacturing method of powder for lithium manganese cell with porous metal piece bonded together - Google Patents
Manufacturing method of powder for lithium manganese cell with porous metal piece bonded together Download PDFInfo
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 68
- 239000002184 metal Substances 0.000 title claims abstract description 68
- 239000000843 powder Substances 0.000 title claims abstract description 54
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000011148 porous material Substances 0.000 claims abstract description 35
- 239000011888 foil Substances 0.000 claims abstract description 34
- 229920002799 BoPET Polymers 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 238000004080 punching Methods 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 15
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000011889 copper foil Substances 0.000 claims description 5
- 239000007774 positive electrode material Substances 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 238000003491 array Methods 0.000 abstract 1
- 235000012771 pancakes Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- OKPRGEWIGRLFDP-UHFFFAOYSA-N [O-][O-].[Li+].[Mn+2] Chemical group [O-][O-].[Li+].[Mn+2] OKPRGEWIGRLFDP-UHFFFAOYSA-N 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000009700 powder processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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- Cell Electrode Carriers And Collectors (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
本発明は、電池分野に関し、特に、多孔質金属片を結合したマンガンリチウム電池用粉体の製造方法に関する。 The present invention relates to the battery field, and more particularly to a method for producing a powder for a manganese lithium battery in which porous metal pieces are bonded.
マンガンリチウム電池の正式名称は、二酸化マンガンリチウム電池である。一次電池において、金属リチウムを陽極、二酸化マンガンを陰極とする。一次電池において陽極が負極で、電子は負極から正極に向けて流れ、電流は正極から負極に向けて流れている。電解槽において陽極は正極と繋がり、陽極で酸化反応を起こすのは溶液中の陰イオンであり、陰極と対応する。 The official name of the manganese lithium battery is manganese lithium dioxide battery. In a primary battery, metallic lithium is used as an anode and manganese dioxide is used as a cathode. In a primary battery, the anode is the negative electrode, electrons flow from the negative electrode to the positive electrode, and current flows from the positive electrode to the negative electrode. In the electrolytic cell, the anode is connected to the positive electrode, and it is the anions in the solution that cause the oxidation reaction at the anode, which corresponds to the cathode.
現在国内外電池メーカは、過去数十年間において一貫して変わらないパンケーキ製造工程のままで使用され、電池容量を高めることができず、かつ製造プロセスにおける損耗率が極めて高い。従来の使い捨て式ボタン型リチウムマンガン電池（３．０Ｖ）を例にすると、すべての粉体は、パンケーキ状或いは塗料ゲル状であり、プレスの時に非常に高い密度が要求され、さもなければプレスの時に亀裂が生じやすく、また容量が要求基準を満たすことができない。また電池の製造の時にパンケーキに電解液を注入した後、より一層容易にパンケーキが緩くなるため、粉体加工や製造プロセスの検査時の品質管理作業の要求が増加され、製造時コストが増えてしまう。 Currently, domestic and foreign battery manufacturers are used in the pancake manufacturing process that has not changed consistently in the past few decades, the battery capacity cannot be increased, and the wear rate in the manufacturing process is extremely high. Taking the conventional disposable button cell lithium manganese battery (3.0V) as an example, all powders are in the form of pancakes or paint gels, which require a very high density when pressed, otherwise pressed. At that time, cracks are likely to occur, and the capacity cannot meet the required standards. In addition, after injecting the electrolyte into the pancake during battery manufacturing, the pancake becomes looser more easily, which increases the demand for quality control work during powder processing and inspection of the manufacturing process, resulting in higher manufacturing costs. It will increase.
よって、本発明は、多孔質金属片を結合したマンガンリチウム電池用粉体の加工方法を提案し、主に使い捨て式リチウムマンガン電池（１．５Ｖ及び３．０Ｖ）に用いられ、電流収集技術を用いることで、効果的に製造コストを削減でき、同時に電池の品質及び容量を高めることもでき、幅広い市場におけるポテンシャルを持っている。 Therefore, the present invention proposes a method for processing powder for a manganese lithium battery in which porous metal pieces are bonded, and is mainly used for disposable lithium manganese batteries (1.5V and 3.0V) to provide a current collection technique. By using it, the manufacturing cost can be effectively reduced, and at the same time, the quality and capacity of the battery can be improved, which has the potential in a wide range of markets.
本発明は、上記背景技術内の問題点を解決するため、多孔質金属片を結合したマンガンリチウム電池用粉体の製造方法を提供することを目的とする。 An object of the present invention is to provide a method for producing a powder for a manganese lithium battery in which porous metal pieces are bonded in order to solve the problems in the above background technology.
上記目的を達成するため、本発明は、多孔質金属片を結合したマンガンリチウム電池用粉体の製造方法であって、
金属箔を用意し、金属箔に細孔配列を開設して多孔質金属片を製造するステップ１と、
ＰＥＴフィルムを多孔質金属片に貼付するステップ２と、
正極材料が混合・撹拌された後で粒子として押し固められ、篩により粗粉末を除去して正極用粒子ペーストを得るステップ３と、
一対のローラによりＰＥＴフィルムが貼付された多孔質金属片と正極用粒子ペーストを帯状粉体として圧延するステップ４と、
一対のローラにより帯状粉体を多孔質金属片の上に圧延し、扁平形状に成形された後でＰＥＴフィルムを剥がして半製品の粉体を得るステップ５と、
半製品の粉体を円形に打ち抜いて製品の粉体を得るステップ６とを含み、
前記金属箔は、厚さが８〜２０ｍｍ、全幅が２１７〜３７０ｍｍ、穴あけ幅が１８７〜３５０ｍｍ、細孔の孔径が０．２５〜０．４ｍｍ、細孔ピッチが０．６〜１ｍｍ
である。
In order to achieve the above object, the present invention is a method for producing a powder for a manganese lithium battery in which porous metal pieces are bonded.
Step 1 of preparing a metal foil and opening a pore arrangement in the metal foil to produce a porous metal piece,
Step 2 of attaching the PET film to the porous metal piece,
Step 4 of rolling a porous metal piece to which a PET film is attached and a particle paste for a positive electrode as a band-shaped powder by a pair of rollers
Step 5: Rolling the strip-shaped powder onto a porous metal piece with a pair of rollers, forming it into a flat shape, and then peeling off the PET film to obtain a semi-finished powder.
Including step 6 of punching the powder of the semi-finished product into a circle to obtain the powder of the product.
The metal foil has a thickness of 8 to 20 mm, a total width of 217 to 370 mm, a drilling width of 187 to 350 mm, a pore diameter of 0.25 to 0.4 mm, and a pore pitch of 0.6 to 1 mm.
Is.
さらに、本発明の技術的解決策として、前記ステップ１の金属箔は、銅箔又はアルミ箔
である。
Further, as a technical solution of the present invention, the metal foil in step 1 is a copper foil or an aluminum foil.
さらに、本発明の技術的解決策として、前記ステップ１の細孔は、円形又は菱形である。 Further, as a technical solution of the present invention, the pores in step 1 are circular or rhombic.
さらに、本発明の技術的解決策として、前記ステップ１の金属箔は、全幅が、２１７ｍｍ、穴あけ幅が１８７ｍｍ、細孔の孔径が０．２５ｍｍ、細孔ピッチが０．６ｍｍである。 Further, as a technical solution of the present invention, the metal foil of step 1 has a total width of 217 mm, a drilling width of 187 mm, a pore diameter of 0.25 mm, and a pore pitch of 0.6 mm.
さらに、本発明の技術的解決策として、前記ステップ１の金属箔は、全幅が、２９０ｍｍ、穴あけ幅が２６０ｍｍ、細孔の孔径が０．３５ｍｍ、細孔ピッチが０．８ｍｍである。 Further, as a technical solution of the present invention, the metal foil of step 1 has a total width of 290 mm, a drilling width of 260 mm, a pore diameter of 0.35 mm, and a pore pitch of 0.8 mm.
さらに、本発明の技術的解決策として、前記ステップ１の金属箔は、全幅が、３７０ｍｍ、穴あけ幅が３５０ｍｍ、細孔の孔径が０．４ｍｍ、細孔ピッチが１ｍｍである。 Further, as a technical solution of the present invention, the metal foil of step 1 has a total width of 370 mm, a drilling width of 350 mm, a pore diameter of 0.4 mm, and a pore pitch of 1 mm.
従来技術と比較して、本発明は、以下の有利な効果を奏する。
本発明は、電流収集技術を用いて製造し、主に使い捨て式リチウムマンガン電池（１．５Ｖ及び３．０Ｖ）に用いられ、効果的に製造コストを削減でき、同時に電池の品質及び容量を高めることもでき、幅広い市場におけるポテンシャルを持っている。
Compared with the prior art, the present invention has the following advantageous effects.
The present invention is manufactured using current collection technology and is mainly used for disposable lithium manganese batteries (1.5V and 3.0V), which can effectively reduce the manufacturing cost and at the same time improve the quality and capacity of the battery. It can also have potential in a wide range of markets.
以下、本発明の実施例の添付図面を基に、本発明の実施例の技術的解決策について明確、完全な記述を行うが、記述する実施例は僅か本発明の一部の実施例であって、全部の実施例ではない。本発明の実施例に基づいて、当業者が格別な創意工夫を要しない前提下で得られた全ての他の実施例は、本発明の保護範囲に属する。 Hereinafter, the technical solutions of the examples of the present invention will be clearly and completely described based on the accompanying drawings of the examples of the present invention, but the described examples are only a part of the examples of the present invention. Not all examples. Based on the embodiments of the present invention, all other embodiments obtained under the premise that those skilled in the art do not require special ingenuity belong to the scope of protection of the present invention.
＜実施例１＞
本実施例において、多孔質金属片を結合したマンガンリチウム電池用粉体の製造方法であって、
金属箔を用意し、金属箔に細孔配列を開設して多孔質金属片を製造するステップ１と、
ＰＥＴフィルムを多孔質金属片に貼付するステップ２と、
正極材料が混合・撹拌された後で粒子として押し固められ、篩により粗粉末を除去して正極用粒子ペーストを得るステップ３と、
一対のローラによりＰＥＴフィルムが貼付された多孔質金属片と正極用粒子ペーストを帯状粉体として圧延するステップ４と、
一対のローラにより帯状粉体を多孔質金属片の上に圧延し、扁平形状に成形された後でＰＥＴフィルムを剥がして半製品の粉体を得るステップ５と、
半製品の粉体を円形に打ち抜いて製品の粉体を得るステップ６と、
を含み、前記ステップ１において金属箔は、厚さが８〜２０ｍｍ、全幅が２１７ｍｍ、穴あけ幅が１８７ｍｍ、細孔の孔径が０．２５ｍｍ、細孔ピッチが０．６ｍｍ。
<Example 1>
In this embodiment, it is a method for producing a powder for a manganese lithium battery in which porous metal pieces are bonded.
Step 1 of preparing a metal foil and opening a pore arrangement in the metal foil to produce a porous metal piece,
Step 2 of attaching the PET film to the porous metal piece,
Step 4 of rolling a porous metal piece to which a PET film is attached and a particle paste for a positive electrode as a band-shaped powder by a pair of rollers.
Step 5: Rolling the strip-shaped powder onto a porous metal piece with a pair of rollers, forming it into a flat shape, and then peeling off the PET film to obtain a semi-finished powder.
Step 6 to obtain the product powder by punching the semi-finished product powder into a circle,
In step 1, the metal foil has a thickness of 8 to 20 mm, a total width of 217 mm, a drilling width of 187 mm, a pore diameter of 0.25 mm, and a pore pitch of 0.6 mm.
前記ステップ１の金属箔は、銅箔又はアルミ箔である。 The metal foil in step 1 is a copper foil or an aluminum foil.
前記ステップ１の細孔は、円形又は菱形である。 The pores in step 1 are circular or rhombic.
＜実施例２＞
本実施例において、多孔質金属片を結合したマンガンリチウム電池用粉体の製造方法であって、
金属箔を用意し、金属箔に細孔配列を開設して多孔質金属片を製造するステップ１と、
ＰＥＴフィルムを多孔質金属片に貼付するステップ２と、
正極材料が混合・撹拌された後で粒子として押し固められ、篩により粗粉末を除去して正極用粒子ペーストを得るステップ３と、
一対のローラによりＰＥＴフィルムが貼付された多孔質金属片と正極用粒子ペーストを帯状粉体として圧延するステップ４と、
一対のローラにより帯状粉体を多孔質金属片の上に圧延し、扁平形状に成形された後でＰＥＴフィルムを剥がして半製品の粉体を得るステップ５と、
半製品の粉体を円形に打ち抜いて製品の粉体を得るステップ６と、
を含み、前記ステップ１において金属箔は、厚さが８〜２０ｍｍ、全幅が２９０ｍｍ、穴あけ幅が２６０ｍｍ、細孔の孔径が０．３５ｍｍ、細孔ピッチが０．８ｍｍ。
<Example 2>
In this embodiment, it is a method for producing a powder for a manganese lithium battery in which porous metal pieces are bonded.
Step 1 of preparing a metal foil and opening a pore arrangement in the metal foil to produce a porous metal piece,
Step 2 of attaching the PET film to the porous metal piece,
Step 4 of rolling a porous metal piece to which a PET film is attached and a particle paste for a positive electrode as a band-shaped powder by a pair of rollers.
Step 5: Rolling the strip-shaped powder onto a porous metal piece with a pair of rollers, forming it into a flat shape, and then peeling off the PET film to obtain a semi-finished powder.
Step 6 to obtain the product powder by punching the semi-finished product powder into a circle,
In step 1, the metal foil has a thickness of 8 to 20 mm, a total width of 290 mm, a drilling width of 260 mm, a pore diameter of 0.35 mm, and a pore pitch of 0.8 mm.
前記ステップ１の金属箔は、銅箔又はアルミ箔である。 The metal foil in step 1 is a copper foil or an aluminum foil.
前記ステップ１の細孔は、円形又は菱形である。 The pores in step 1 are circular or rhombic.
＜実施例３＞
本実施例において、多孔質金属片を結合したマンガンリチウム電池用粉体の製造方法であって、
金属箔を取り、金属箔に細孔配列を開設して多孔質金属片を製造するステップ１と、
ＰＥＴフィルムを多孔質金属片に貼付するステップ２と、
正極材料が混合・撹拌された後で粒子として押し固められ、篩により粗粉末を除去して正極用粒子ペーストを得るステップ３と、
一対のローラによりＰＥＴフィルムが貼付された多孔質金属片と正極用粒子ペーストを帯状粉体として圧延するステップ４と、
一対のローラにより帯状粉体を多孔質金属片の上に圧延し、扁平形状に成形された後でＰＥＴフィルムを剥がして半製品の粉体を得るステップ５と、
半製品の粉体を円形に打ち抜いて製品の粉体を得るステップ６と、
を含み、前記ステップ１において金属箔は、厚さが８〜２０ｍｍ、全幅が３７０ｍｍ、穴あけ幅が３５０ｍｍ、細孔の孔径が０．４ｍｍ、細孔ピッチが１ｍｍ。
<Example 3>
In this embodiment, it is a method for producing a powder for a manganese lithium battery in which porous metal pieces are bonded.
Step 1 of taking a metal foil and opening a pore arrangement in the metal foil to produce a porous metal piece,
Step 2 of attaching the PET film to the porous metal piece,
Step 4 of rolling a porous metal piece to which a PET film is attached and a particle paste for a positive electrode as a band-shaped powder by a pair of rollers.
Step 5: Rolling the strip-shaped powder onto a porous metal piece with a pair of rollers, forming it into a flat shape, and then peeling off the PET film to obtain a semi-finished powder.
Step 6 to obtain the product powder by punching the semi-finished product powder into a circle,
In step 1, the metal foil has a thickness of 8 to 20 mm, a total width of 370 mm, a drilling width of 350 mm, a pore diameter of 0.4 mm, and a pore pitch of 1 mm.
前記ステップ１の金属箔は、銅箔又はアルミ箔である。 The metal foil in step 1 is a copper foil or an aluminum foil.
前記ステップ１の細孔は、円形又は菱形である。 The pores in step 1 are circular or rhombic.
本発明は、電流収集技術を用いて製造し、主に使い捨て式リチウムマンガン電池（１．５Ｖ及び３．０Ｖ）に用いられ、効果的に製造コストを削減でき、同時に電池の品質及び容量を高めることもでき、幅広い市場におけるポテンシャルを持っている。 The present invention is manufactured using current collection technology and is mainly used for disposable lithium manganese batteries (1.5V and 3.0V), which can effectively reduce the manufacturing cost and at the same time improve the quality and capacity of the battery. It can also have potential in a wide range of markets.
本発明は、上記例示的な実施例の詳細に限られず、かつ本発明の趣旨又は基本的特徴から逸脱することなく、その他の具体的な形態で本発明を実現できることが、当業者には、明らかとなろう。よって、どの視点からみるかどうかを問わず、すべての実施例を例示的かつ非限定的なものと見なすべき、本発明の範囲は上記説明ではなく、添付する特許請求
の範囲で限定されるため、特許請求の範囲の均等要件の意味及び範囲内に入る全ての変化を本発明内に網羅することを目的とする。特許請求の範囲内のいかなる添付図面の符号は関わる特許請求の範囲を制限すると見なしていない。
Those skilled in the art can realize that the present invention is not limited to the details of the above-exemplified examples, and that the present invention can be realized in other specific forms without departing from the spirit or basic features of the present invention. It will be clear. Therefore, all examples should be regarded as exemplary and non-limiting regardless of the viewpoint, because the scope of the present invention is not the above description but is limited to the appended claims. It is an object of the present invention to cover the meaning of the equal requirements of the claims and all changes within the scope of the claims. The reference numerals of any accompanying drawings within the scope of the claims are not considered to limit the scope of the claims involved.
また、本明細書は、実施形態に基づいて記述したが、各実施形態が１つの独立した技術的解決策のみを含むことはない。明細書のこのような記述方式は、本発明の技術内容を明らかにするものだけであって、当業者が明細書を一体として見なすべき、各実施例の技術的解決策も適切な組み合わせを経て当業者が理解できるその他の実施形態を形成できる。 Also, although described herein based on embodiments, each embodiment does not include only one independent technical solution. Such a description method of the specification is only for clarifying the technical contents of the present invention, and the technical solutions of each embodiment to which a person skilled in the art should consider the specification as a whole are also subjected to an appropriate combination. Other embodiments that can be understood by those skilled in the art can be formed.
Claims (6)
ＰＥＴフィルムを前記多孔質金属片に貼付するステップ２と、
正極材料が混合・撹拌された後で粒子として押し固められ、篩により粗粉末を除去して正極用粒子ペーストを得るステップ３と、
一対のローラにより前記ＰＥＴフィルムが貼付された前記多孔質金属片と前記正極用粒子ペーストを帯状粉体として圧延するステップ４と、
前記一対のローラにより前記帯状粉体を前記多孔質金属片の上に圧延し、扁平形状に成形された後で前記ＰＥＴフィルムを剥がして半製品の粉体を得るステップ５と、
前記半製品の粉体を円形に打ち抜いて製品の粉体を得るステップ６とを含み、
前記金属箔は、厚さが８〜２０ｍｍ、全幅が２１７〜３７０ｍｍ、穴あけ幅が１８７〜３５０ｍｍ、細孔の孔径が０．２５〜０．４ｍｍ、細孔ピッチが０．６〜１ｍｍ
であることを特徴とする、多孔質金属片を結合したマンガンリチウム電池用粉体の製造方法。 Step 1 of preparing a metal foil and forming a pore arrangement in the metal foil to produce a porous metal piece,
Step 2 of attaching the PET film to the porous metal piece,
Step 3 and step 3 in which the positive electrode material is mixed and stirred and then compacted as particles and the coarse powder is removed by a sieve to obtain a particle paste for the positive electrode.
Step 4 of rolling the porous metal piece to which the PET film is attached and the particle paste for the positive electrode as a band-shaped powder by a pair of rollers.
Step 5: The strip-shaped powder is rolled onto the porous metal piece by the pair of rollers, formed into a flat shape, and then the PET film is peeled off to obtain a semi-finished powder.
Including step 6 of punching the powder of the semi-finished product into a circle to obtain the powder of the product.
The metal foil has a thickness of 8 to 20 mm, a total width of 217 to 370 mm, a drilling width of 187 to 350 mm, a pore diameter of 0.25 to 0.4 mm, and a pore pitch of 0.6 to 1 mm.
A method for producing a powder for a manganese-lithium battery in which porous metal pieces are bonded.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008159354A (en) * | 2006-12-22 | 2008-07-10 | Matsushita Electric Ind Co Ltd | Coin type lithium primary battery and manufacturing method of positive electrode for coin type lithium primary battery |
| JP2017098012A (en) * | 2015-11-20 | 2017-06-01 | Fdk株式会社 | Lithium battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008159354A (en) * | 2006-12-22 | 2008-07-10 | Matsushita Electric Ind Co Ltd | Coin type lithium primary battery and manufacturing method of positive electrode for coin type lithium primary battery |
| JP2017098012A (en) * | 2015-11-20 | 2017-06-01 | Fdk株式会社 | Lithium battery |
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