JPH04184864A - Manufacture of lithium battery - Google Patents
Manufacture of lithium batteryInfo
- Publication number
- JPH04184864A JPH04184864A JP2315482A JP31548290A JPH04184864A JP H04184864 A JPH04184864 A JP H04184864A JP 2315482 A JP2315482 A JP 2315482A JP 31548290 A JP31548290 A JP 31548290A JP H04184864 A JPH04184864 A JP H04184864A
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- negative electrode
- lump
- electrode current
- current collecting
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 229910000733 Li alloy Inorganic materials 0.000 claims abstract description 11
- 239000001989 lithium alloy Substances 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 238000005096 rolling process Methods 0.000 abstract description 3
- 238000004080 punching Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- -1 lithium and lead Chemical compound 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010409 thin film Substances 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、リチウムを負極とするリチウム電池の製造法
に関するもので、さらに詳しくいえば、薄膜リチウム負
極を製造する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a lithium battery using lithium as a negative electrode, and more specifically, to a method for manufacturing a thin film lithium negative electrode.
従来技術とその問題点
従来のリチウム負極は、リチウム箔を裁断または打ち抜
いて、負極集電体上に重ね合わせて用いられていた。し
かし、この方法では、リチウム箔が非常に柔軟であり、
テンシラン等の外力に耐えないため、リチウム箔を電池
に組み込むまでの取り扱い中に破損しやすいという問題
点を有していた。さらにリチウム箔の厚さの下限が３０
〜５０μｍで、それ以下の厚さの箔を作ることが技術的
に困難であったため、負極の厚さを薄くする、すなわち
電池の厚さを薄くするには限界があった。Prior art and its problems Conventional lithium negative electrodes have been used by cutting or punching lithium foil and stacking the cut or punched pieces on a negative electrode current collector. However, with this method, the lithium foil is very flexible and
Since the lithium foil cannot withstand external forces such as tensilan, it has the problem that it is easily damaged during handling before it is assembled into a battery. Furthermore, the lower limit of the thickness of lithium foil is 30
Since it was technically difficult to make a foil with a thickness of ~50 μm or less, there was a limit to reducing the thickness of the negative electrode, that is, the thickness of the battery.
発明の目的
本発明は、上記従来技術の問題点に鑑みてなされたもの
で、その目的は、リチウム電池の負極集電体上にリチウ
ムを薄くかつ簡単に取り付ける方法を提供することにあ
る。OBJECTS OF THE INVENTION The present invention has been made in view of the problems of the prior art described above, and its purpose is to provide a method for attaching lithium thinly and easily on a negative electrode current collector of a lithium battery.
発明の構成
上記目的を達成するために、本発明は、一定重量のリチ
ウム塊またはリチウム合金塊を負極集電体上に載置し、
更に所定寸法のガイドを載置した後、前記リチウム環ま
たはリチウム合金塊をプレスすることにより、前記ガイ
ドと同寸法に圧延すると共に前記負極集電体上に圧着す
るものである。尚、プレスする際、前記リチウムまたは
リチウム合金塊を溶融させておくことにより、圧延を一
層容易に実施できる。Structure of the Invention In order to achieve the above object, the present invention places a lithium ingot or a lithium alloy ingot of a certain weight on a negative electrode current collector,
Further, after placing a guide of a predetermined size, the lithium ring or lithium alloy ingot is rolled to the same size as the guide and crimped onto the negative electrode current collector by pressing the lithium ring or lithium alloy ingot. Note that rolling can be carried out more easily by melting the lithium or lithium alloy ingot during pressing.
実施例 本発明の実施例について図面に基づいて説明する。Example Embodiments of the present invention will be described based on the drawings.
第１図は、本発明に係る偏平形リチウム電池の側断面図
であり、１はＭ ｎ Ｏ！等の正極作用物質とカーボン
ブラック等の導電剤とテフロン等のバインダーからなる
正極で、ＳＯ３，Ａｆ等からなる正極集電体２の□内面
（図では下部）にコーティングされている。３はリチウ
ムまたは、リチウムと鉛等のリチウム合金からなる負極
で、ＳＵＳ、Ｎ＋等の負極集電体４の内面（図では上部
〕に圧着されている。５はＬｉＣｆ０．−ＰＣ（過塩素
酸リチウムのプロピレンカーボネイト）ｆ４液を含浸し
たポリプロピレン製不織布または微孔フィルムからなる
セパレータである。６は変性ポリプロピレン等からなる
窓枠状のフレーム樹脂で、正極集電体２と負極集電体４
に融着されている。FIG. 1 is a side sectional view of a flat lithium battery according to the present invention, where 1 is M n O! The positive electrode is made of a positive electrode active substance such as, a conductive agent such as carbon black, and a binder such as Teflon, and is coated on the inner surface (lower part in the figure) of a positive electrode current collector 2 made of SO3, Af, etc. 3 is a negative electrode made of lithium or a lithium alloy such as lithium and lead, which is crimped to the inner surface (upper part in the figure) of a negative electrode current collector 4 made of SUS, N+, etc. 5 is a negative electrode made of lithium or a lithium alloy such as lithium and lead. The separator is made of polypropylene nonwoven fabric or microporous film impregnated with lithium (propylene carbonate) F4 liquid. 6 is a window frame-shaped frame resin made of modified polypropylene, etc., and the positive electrode current collector 2 and the negative electrode current collector 4
is fused to.
第２図は、本発明に係る第１図の負極の製造法を示す説
明図であり、（＾）はその第１の実施例を示す図で、リ
チウム板を打抜きまたは成形して得られた一定重量のリ
チウム環７を負極集電体４上に載置し、ガイド８を当接
させた後、プレス機９によってプレスする。リチウム環
７はガイド８に沿って圧延され、負極集電体４上に圧着
される。（Ｂ）は前記製造法の第２の実施例を示す図で
、圧延を容易にするため、小さなリチウム環７を数個載
置したものである。（Ｃ）は前記製造法の第３の実施例
を示す図で、溶融したリチウムをディベンサー等により
負極集電体４上に供給し、溶融した状態でプレスする。FIG. 2 is an explanatory diagram showing the method of manufacturing the negative electrode shown in FIG. A lithium ring 7 of a certain weight is placed on the negative electrode current collector 4 , and after the guide 8 is brought into contact with the lithium ring 7 , it is pressed by a press machine 9 . The lithium ring 7 is rolled along the guide 8 and crimped onto the negative electrode current collector 4 . (B) is a diagram showing a second embodiment of the manufacturing method, in which several small lithium rings 7 are placed to facilitate rolling. (C) is a diagram showing a third embodiment of the manufacturing method, in which molten lithium is supplied onto the negative electrode current collector 4 using a devenser or the like, and pressed in a molten state.
以上の実施例によれば、従来技術で述べた方法では製作
できなかった１０〜２０μｍ程度の極く薄い負極を製作
できた。According to the above embodiments, an extremely thin negative electrode of about 10 to 20 μm, which could not be manufactured using the method described in the prior art, could be manufactured.
発明の効果
以上詳細に説明したように、本発明の製造法によれば、
従来製作できなかった薄いリチウム負極を製作でき、リ
チウム箔を取り扱う工程もなくなり、プレスするという
簡単な工程で製作できるため、リチウム電池の生産能率
を向上させることができる。Effects of the Invention As explained in detail above, according to the production method of the present invention,
It is possible to produce a thin lithium negative electrode, which was previously impossible to produce, and eliminates the process of handling lithium foil, which can be produced with a simple process of pressing, improving the production efficiency of lithium batteries.
第１図は本発明に係るリチウム電池の断面図、第２図（
＾）は本発明の第１の実施例を示す説明図、第２図（Ｂ
）は同第２の実施例を示す説明図、第２図（Ｃ）は同第
３の実施例を示す説明図である。
４・・・負極集電体 ７・・・リチウム環９・・
・プレス機Figure 1 is a cross-sectional view of a lithium battery according to the present invention, and Figure 2 (
^) is an explanatory diagram showing the first embodiment of the present invention, and Fig. 2 (B
) is an explanatory diagram showing the second embodiment, and FIG. 2(C) is an explanatory diagram showing the third embodiment. 4... Negative electrode current collector 7... Lithium ring 9...
・Press machine
Claims (2)
を載置し、該リチウム塊またはリチウム合金塊をプレス
して、前記負極集電体の表面に圧延圧着したことを特徴
とする、 リチウム電池の製造法。(1) Lithium, characterized in that a lithium ingot or a lithium alloy ingot is placed on a negative electrode current collector, and the lithium ingot or lithium alloy ingot is pressed and rolled and crimped onto the surface of the negative electrode current collector. Battery manufacturing method.
金塊を溶融した状態でプレスすることを特徴とする、 リチウム電池の製造法。(2) A method for producing a lithium battery, comprising pressing the lithium ingot or lithium alloy ingot according to claim (1) in a molten state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2315482A JP2765222B2 (en) | 1990-11-19 | 1990-11-19 | Manufacturing method of lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2315482A JP2765222B2 (en) | 1990-11-19 | 1990-11-19 | Manufacturing method of lithium battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04184864A true JPH04184864A (en) | 1992-07-01 |
| JP2765222B2 JP2765222B2 (en) | 1998-06-11 |
Family
ID=18065897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2315482A Expired - Fee Related JP2765222B2 (en) | 1990-11-19 | 1990-11-19 | Manufacturing method of lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2765222B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558953A (en) * | 1993-10-21 | 1996-09-24 | Matsushita Electric Industrial Co., Ltd. | Electrocrystallized lithuim metal, method for producing the same, and lithium secondary battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58154169A (en) * | 1982-03-09 | 1983-09-13 | Yuasa Battery Co Ltd | Manufacture of lithium negative electrode body |
| JPS6273560A (en) * | 1985-09-27 | 1987-04-04 | Toshiba Battery Co Ltd | Manufacture of negative electrode for organic solvent cell |
| JPS62140360A (en) * | 1985-12-13 | 1987-06-23 | Matsushita Electric Ind Co Ltd | Manufacture of organic electrolyte cell |
| JPH027361A (en) * | 1987-12-16 | 1990-01-11 | Sanyo Electric Co Ltd | Manufacture of negative electrode of nonaqueous electrolyte battery |
| JPH03238756A (en) * | 1990-02-15 | 1991-10-24 | Matsushita Electric Ind Co Ltd | Manufacture of coin type lithium cell |
-
1990
- 1990-11-19 JP JP2315482A patent/JP2765222B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58154169A (en) * | 1982-03-09 | 1983-09-13 | Yuasa Battery Co Ltd | Manufacture of lithium negative electrode body |
| JPS6273560A (en) * | 1985-09-27 | 1987-04-04 | Toshiba Battery Co Ltd | Manufacture of negative electrode for organic solvent cell |
| JPS62140360A (en) * | 1985-12-13 | 1987-06-23 | Matsushita Electric Ind Co Ltd | Manufacture of organic electrolyte cell |
| JPH027361A (en) * | 1987-12-16 | 1990-01-11 | Sanyo Electric Co Ltd | Manufacture of negative electrode of nonaqueous electrolyte battery |
| JPH03238756A (en) * | 1990-02-15 | 1991-10-24 | Matsushita Electric Ind Co Ltd | Manufacture of coin type lithium cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5558953A (en) * | 1993-10-21 | 1996-09-24 | Matsushita Electric Industrial Co., Ltd. | Electrocrystallized lithuim metal, method for producing the same, and lithium secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2765222B2 (en) | 1998-06-11 |
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