WO1999030377A1 - Battery casing made of clad metallic sheet - Google Patents
Battery casing made of clad metallic sheet Download PDFInfo
- Publication number
- WO1999030377A1 WO1999030377A1 PCT/JP1998/005476 JP9805476W WO9930377A1 WO 1999030377 A1 WO1999030377 A1 WO 1999030377A1 JP 9805476 W JP9805476 W JP 9805476W WO 9930377 A1 WO9930377 A1 WO 9930377A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clad metal
- plate
- battery case
- metal plate
- electrode
- Prior art date
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 19
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 239000002184 metal Substances 0.000 claims description 34
- 238000007747 plating Methods 0.000 claims description 5
- 238000000992 sputter etching Methods 0.000 claims description 4
- 238000001994 activation Methods 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000010409 ironing Methods 0.000 description 8
- 238000005530 etching Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/145—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against corrosion
-
- 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
Definitions
- the present invention relates to a battery case made of a clad metal plate used as a battery case for various batteries, particularly, a lithium ion battery used as a power source for a mobile phone or the like.
- the present invention is intended to solve such a problem, and is excellent in volume and corrosion resistance, and has high mechanical strength to prevent leakage of a solution and to provide high sealing performance.
- a battery case made of a clad metal plate according to claim 1 has a clad metal plate obtained by cladding a nickel-plated steel plate with an aluminum plate, with a 5 "luminium plate facing inside. It is manufactured by drawing or DI processing (drawing and ironing) into a bottom cylinder.
- the reason why the aluminum plate is used as the inner surface forming member of the battery case is that the nickel plate is used as the outer surface forming member clad on the aluminum plate because of its high corrosion resistance to the solution filled in the battery case. Is aluminum In consideration of the insufficient mechanical strength of the aluminum plate, the strength of the battery case is reinforced, and the work of caulking the lid etc. to the battery case can be performed easily and reliably, ensuring that the solution leaks out. In order to prevent this.
- the battery case made of the clad metal plate according to claim 2,
- the thickness I5 "of the clad metal plate is set to 0.2 to 0.5 mm, and the thickness of the aluminum plate is set to 20 to 70% of the thickness of the clad metal plate. It is characterized by the following.
- the thickness of the clad metal plate is set to 0.2 to 0.5 mm is as follows. That is, when the thickness is less than 0.2 mm, the thickness of the aluminum plate must be kept at a certain value or more from the viewpoint of maintaining corrosion resistance. This is because it cannot secure sufficient reinforcement effect. On the other hand, the thickness is 0.
- the internal capacity of the battery case may not be sufficient.
- the thickness of the aluminum plate is set to 20 to 70% of the thickness of the clad metal plate is that if it is less than 20%, sufficient corrosion resistance cannot be obtained. This is because it is not possible to secure a sufficient thickness of the steel, and it is not possible to obtain a sufficient reinforcing effect.
- FIG. 1 is a sectional view of a battery case made of a clad metal plate according to an embodiment of the present invention.
- FIG. FIG. 2 is a cross-sectional front view of an apparatus for manufacturing a clad metal plate.
- FIG. 3 is an explanatory diagram of DI processing for manufacturing a battery case from a clad metal plate. The description of the reference numerals in these figures is as follows.
- FIG. 1 shows a battery case 10 made of a bottomed container that has been subjected to drawing or DI processing.
- the battery can be manufactured by filling the battery case 10 with a solution or other battery-forming members, and then crimping the lid on the upper end opening in an airtight state. .
- the battery case 10 is manufactured by drawing or DI working a clad metal plate, and has a two-layer structure having a substantially uniform thickness over the whole. That is, the battery case 10 uses the aluminum plate 11 as the inner surface forming member and the nickel plated steel plate 12 as the outer surface formed member, and the aluminum plate 11 and the nickel plated steel plate 12 are firmly and integrally joined. Have been.
- the nickel plating 14 is applied to the outer surface of 3, it is possible to effectively prevent the occurrence of ⁇ on the outer surface of the battery case.
- the cylindrical battery case is usually used. However, in the present invention, a square-shaped punch or die may be used. Next, a method of manufacturing the battery case 10 made of the above-described clad metal plate will be described.
- the aluminum plate 22 and nickel plated steel plate 23 unwound from the unwinding reels 20 and 21 are partially wound around the electrode rolls 25 and 26, part of which protrude into the etching chamber 24.
- a sputter etching process is performed and activated.
- the nickel plating steel plate and the aluminum plate having a bonding surface are each set to one electrode A grounded to ground, and an alternating current of 1 to 50 MHz is applied between the electrode A and the other electrode B that is insulated and supported, and the Let it discharge,
- the area of the electrode exposed in the plasma generated by the glow discharge is less than 1/3 of the area of the electrode ⁇ ,
- a bottomed container 31 made of a shallow clad metal plate 29 having a diameter larger than the outer shape of the battery case 10 as a final product is produced by ordinary drawing. Thereafter, the bottomed container 31 is sequentially supplied to a plurality of ironing dies 32 to 35 arranged on the same axis so that the ironing diameter is reduced so that the ironing diameter is finally reduced.
- the battery case 10 can be manufactured by pressurizing the ironing die 35 of the final stage having the outer diameter of the manufactured battery case 10 with a punch 36 and continuously passing the same.
- the inner and outer surfaces of the battery case 10 can be finished to a smooth surface by applying a proper drawing and ironing pressure.
- a number of ironing dies are arranged on a coaxial line has been described. However, when processing a container having a bottom, it is not particularly necessary to arrange them on the same axis.
- a clad metal plate in which a nickel plated steel plate is clad with an aluminum plate is drawn into a cylindrical shape with a bottom so that the aluminum plate is on the inner side, or DI is drawn. Since it is manufactured by processing, it is possible to manufacture a battery case having excellent corrosion resistance and high hermeticity without solution leakage by increasing mechanical strength.
- the clad metal plate is a nickel-plated steel plate and an aluminum plate after a joint surface between an aluminum plate and an aluminum plate is activated in a vacuum chamber under a specific condition in advance.
- the clad metal sheet and cold-rolled it so that the clad metal sheet can have excellent joining strength. Can be performed smoothly.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A battery casing, which is excellent in volume efficiency and corrosion resistance and is enhanced in mechanical strength to be thereby made high in sealing quality with no solution leakage. A clad metallic sheet formed by cladding an aluminum sheet (11) on a nickel plated steel sheet (12) is subjected to drawing or DI process to have a shape of bottomed-cylinder with the aluminum sheet (11) inside, thereby manufacturing the battery casing. The battery casing thus manufactured is excellent in corrosion resistance and is enhanced in mechanical strength to be thereby made high in sealing quality with no solution leakage.
Description
明細書 Specification
クラッド金属板からなる電池ケース 技術分野 Battery case made of clad metal plate
本発明は、 各種電池、 特に、 携帯電話等の電源として用いられるリチウムィォ ン電池の電池ケースとして用いられるクラッド金属板からなる電池ケースに関す る。 背景技術 The present invention relates to a battery case made of a clad metal plate used as a battery case for various batteries, particularly, a lithium ion battery used as a power source for a mobile phone or the like. Background art
, 0 従来、 上記したリチウムイオン電池は腐食性の強い非水性液体を封入している ため、 また、 加工性も良好なことから、 電池ケースの素材としてアルミニウムが 用いられている。 Conventionally, aluminum is used as the material of the battery case because the above-mentioned lithium ion battery encapsulates a highly corrosive non-aqueous liquid and has good workability.
しかし、 アルミニウム製の電池ケースは、 鋼板に比較すると強度的に弱く、 例 えば、 ケースの一端に金属製の蓋をかしめる際に、 十分なかしめ力を得ることが できず、 溶剤が漏れるおそれがある。 一方、 強度を確保するためケースの厚みを 厚くすると、 電池内部の溶液等充填空間を狭くすることになり、 また、 重量的に も不利になる。 However, aluminum battery cases are weaker in strength than steel plates.For example, when caulking one end of the case with a metal lid, it is not possible to obtain sufficient caulking force and solvent may leak. There is. On the other hand, if the thickness of the case is increased to ensure strength, the space for filling the solution or the like inside the battery becomes narrower, and the weight becomes disadvantageous.
本発明は、 このような課題を解決しょうとするものであり、 容積性、 耐食性に 優れると共に、 機械的強度を高めることによって溶液漏れのない密封性の高い電 The present invention is intended to solve such a problem, and is excellent in volume and corrosion resistance, and has high mechanical strength to prevent leakage of a solution and to provide high sealing performance.
2J) 池ケースを提供することを目的とする。 発明の開示 2J) The purpose is to provide a pond case. Disclosure of the invention
上記目的を達成するため、 請求項 1記載のクラッド金属板からなる電池ケース は、 ニッケルメツキ鋼板にアルミニウム板をクラッドしたクラッド金属板を、 ァ ェ 5" ルミニゥム板が内面側になるようにして有底筒状に絞り加工又は D I加工 （絞り しごき加工） することによって製造することを特徴とする。 In order to achieve the above object, a battery case made of a clad metal plate according to claim 1 has a clad metal plate obtained by cladding a nickel-plated steel plate with an aluminum plate, with a 5 "luminium plate facing inside. It is manufactured by drawing or DI processing (drawing and ironing) into a bottom cylinder.
ここで、 アルミニウム板を電池ケースの内面形成部材として用いるのは、 電池 ケース内に充填される溶液に対する耐食性が高いからであり、 ニッケルメツキ鋼 板をアルミニウム板にクラッドされた外面形成部材として用いるのは、 アルミ二
ゥム板の機械的強度が不十分であることに鑑み、 電池ケースの強度を補強し、 電 池ケースへの蓋等のかしめ作業を容易かつ確実に行え、 溶液が外部に漏出するの を確実に防止するためである。 The reason why the aluminum plate is used as the inner surface forming member of the battery case is that the nickel plate is used as the outer surface forming member clad on the aluminum plate because of its high corrosion resistance to the solution filled in the battery case. Is aluminum In consideration of the insufficient mechanical strength of the aluminum plate, the strength of the battery case is reinforced, and the work of caulking the lid etc. to the battery case can be performed easily and reliably, ensuring that the solution leaks out. In order to prevent this.
請求項 2記載のクラッド金属板からなる電池ケースは、 クラッド金属板として、 The battery case made of the clad metal plate according to claim 2,
5" 真空槽内で前記ニッケルメツキ鋼板とアルミニウム板の接合面を予め活性化処理 した後、 前記ニッケルメツキ鋼板と前記アルミニウム板を重合して冷間圧延接合 することによって製造されたものを用い、 その際、 活性化処理を、 After the joint surface of the nickel plated steel plate and the aluminum plate is preliminarily activated in a 5 ″ vacuum chamber, a product manufactured by polymerizing the nickel plated steel plate and the aluminum plate and performing cold rolling bonding is used. At that time, the activation process
• 1 X 1 0_'〜1 X 1 0— 4 Torr の極低圧不活性ガス雰囲気中で、 ·接合面を有 する前記ニッケルメツキ鋼板とアルミニウム板をそれぞれアース接地した一方の 10 電極 Aとし、 絶縁支持された他の電極 Bとの間に 1〜50 MHzの交流を印加して グロ一放電を行わせ、 ·かつ、 前記グロ一放電によって生じたプラズマ中に露出 される電極の面積が、 電極 Bの面積の 1 /3以下で、 ·スパッタエッチング処理 することによって行うようにしたことを特徴とする。 • and in 1 X 1 0_'~1 X 1 0- 4 Torr extremely low pressure inert gas atmosphere, and one of the 10 electrodes A the nickel plated steel plate and the aluminum plate was grounded respectively to have a-bonding surface, insulation An AC of 1 to 50 MHz is applied between the other supported electrode B to cause a glow discharge, and the area of the electrode exposed in the plasma generated by the glow discharge is the electrode It is characterized in that it is carried out by performing a sputter etching process on 1/3 or less of the area of B.
請求項 3記載のクラッド金属板からなる電池ケースは、 クラッド金属板の厚み I 5" を 0. 2〜0. 5mmとし、 アルミニウム板の厚みを前記クラッド金属板の厚み の 20〜70%としたことを特徴とする。 In the battery case made of the clad metal plate according to claim 3, the thickness I5 "of the clad metal plate is set to 0.2 to 0.5 mm, and the thickness of the aluminum plate is set to 20 to 70% of the thickness of the clad metal plate. It is characterized by the following.
ここで、 クラッド金属板の厚みを 0. 2〜0. 5 mmとしたのは次の理由によ る。 即ち、 厚みが 0. 2 mm未満では、 耐食性保持の観点からアルミニウム板の 厚みを一定以上に保持する必要があるので、 ニッケルメツキ鋼板の厚みを十分に 。 確保できず、 十分な補強効果を得ることができないからである。 一方、 厚みを 0. The reason why the thickness of the clad metal plate is set to 0.2 to 0.5 mm is as follows. That is, when the thickness is less than 0.2 mm, the thickness of the aluminum plate must be kept at a certain value or more from the viewpoint of maintaining corrosion resistance. This is because it cannot secure sufficient reinforcement effect. On the other hand, the thickness is 0.
5 mmより大きくする場合は電池ケースの内容積を十分に確保できなくなるおそ れがあるからである。 If it is larger than 5 mm, the internal capacity of the battery case may not be sufficient.
また、 アルミニウム板の厚みを前記クラッド金属板の厚みの 20〜70%とし たのは、 20%未満では十分な耐食性を得ることができず、 一方、 70%を超え^ ると、 ニッケルメツキ鋼板の厚みを十分に確保できず、 十分な補強効果を得るこ とができないからである。 図面の簡単な説明 Further, the reason why the thickness of the aluminum plate is set to 20 to 70% of the thickness of the clad metal plate is that if it is less than 20%, sufficient corrosion resistance cannot be obtained. This is because it is not possible to secure a sufficient thickness of the steel, and it is not possible to obtain a sufficient reinforcing effect. BRIEF DESCRIPTION OF THE FIGURES
図 1は、 本発明の一実施の形態に係るクラッド金属板からなる電池ケースの断
面正面図である。 図 2は、 クラッド金属板の製造装置の断面正面図である。 図 3 は、 クラッド金属板から電池ケースを製作する D I加工の説明図である。 これら の図中における符号の説明は、 下記のとおりである。 FIG. 1 is a sectional view of a battery case made of a clad metal plate according to an embodiment of the present invention. FIG. FIG. 2 is a cross-sectional front view of an apparatus for manufacturing a clad metal plate. FIG. 3 is an explanatory diagram of DI processing for manufacturing a battery case from a clad metal plate. The description of the reference numerals in these figures is as follows.
1 0 ；電池ケース， 1 1 ；アルミニウム板， 1 2 ；ニッケルメツキ鋼板， 1 3 ； 鋼板， 1 4 ; ニッケルメツキ， 2 0 ;巻き戻しリール， 2 1 ;巻き戻しリール， 10; Battery case, 11; Aluminum plate, 12; Nickel plating steel plate, 13; Steel plate, 14; Nickel plating, 20; Rewind reel, 21; Rewind reel,
2 2 ；アルミニウム板材， 2 3 ；ニッケルメツキ鋼板材， 2 4 ；エッチングチヤ ンバ， 2 5 ;電極ロール， 2 6 ;電極ロール， 2 7 ；真空槽， 2 8 ;圧延ュニッ ト， 2 9 ; クラッド金属板， 3 0 ;巻き取りロール， 3 1 ；有底の容器， 3 2〜22: Aluminum plate, 23: Nickel plated steel plate, 24: Etching chamber, 25: Electrode roll, 26: Electrode roll, 27: Vacuum tank, 28: Rolling unit, 29; Cladding Metal plate, 30; take-up roll, 31; bottomed container, 32 to
3 5 ； しごきダイス， 3 6 ；パンチ 3 5; Ironing die, 36; Punch
I 0 I 0
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
以下、 添付図に示す一実施の実施の形態を参照して、 本発明を具体的に説明す る。 まず、 本発明の一実施の形態に係る電池ケースの構成について説明すると、 図 1に絞り加工又は D I加工を施した状態の有底の容器からなる電池ケース 1 0 Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the accompanying drawings. First, the configuration of a battery case according to an embodiment of the present invention will be described. FIG. 1 shows a battery case 10 made of a bottomed container that has been subjected to drawing or DI processing.
15 を示している。 そして、 この電池ケース 1 0内に溶液を充填したり、 その他の電 池形成部材を充填し、 その後、 蓋を上端開口部に気密状態にかしめることによつ て電池を製作することができる。 15 is shown. Then, the battery can be manufactured by filling the battery case 10 with a solution or other battery-forming members, and then crimping the lid on the upper end opening in an airtight state. .
図 1に示すように、 電池ケース 1 0はクラッド金属板を絞り加工又は D I加工 して製作したものであり、 その全体にわたってほぼ均一厚みの 2層構造を有する。 即ち、 電池ケース 1 0は、 内面形成部材としてアルミニウム板 1 1を、 外面形成 部材としてニッケルメツキ鋼板 1 2を用いており、 アルミニウム板 1 1とニッケ ルメツキ鋼板 1 2とは強固に一体的に接合されている。 As shown in FIG. 1, the battery case 10 is manufactured by drawing or DI working a clad metal plate, and has a two-layer structure having a substantially uniform thickness over the whole. That is, the battery case 10 uses the aluminum plate 11 as the inner surface forming member and the nickel plated steel plate 12 as the outer surface formed member, and the aluminum plate 11 and the nickel plated steel plate 12 are firmly and integrally joined. Have been.
かかる構成によって、 アルミニウム板 1 1によって溶液に対する十分な耐食性 を得ることができると共に、 ニッケルメツキ鋼板 1 2によって機械的強度を確保-5" することができる。 また、 ニッケルメツキ鋼板 1 2は鋼板 1 3の外表面にニッケ ルメツキ 1 4が施されているため、 電池ケースの外表面への鲭の発生も効果的に 防止することができる。 なお、 電池ケースは円筒状のものが通常使用されるが、 本願発明では角型状のもののも適用できる。 この場合は、 ポンチやダイスを角型 状のものを用いる必要がある。
次に、 上記したクラッド金属板からなる電池ケース 1 0の製造方法について説 明する。 With this configuration, sufficient corrosion resistance to the solution can be obtained by the aluminum plate 11, and mechanical strength can be ensured by the nickel plated steel plate 12-5 ″. Since the nickel plating 14 is applied to the outer surface of 3, it is possible to effectively prevent the occurrence of 鲭 on the outer surface of the battery case.The cylindrical battery case is usually used. However, in the present invention, a square-shaped punch or die may be used. Next, a method of manufacturing the battery case 10 made of the above-described clad metal plate will be described.
まず、 電池ケース 1 0の素材となるクラッド金属板の製造方法について、 図 2 を参照して説明する。 First, a method of manufacturing a clad metal plate as a material of the battery case 10 will be described with reference to FIG.
卷き戻しリール 2 0、 2 1から巻き戻されたアルミニウム板材 2 2とニッケル メツキ鋼板材 2 3は、 その一部がエッチングチャンバ 2 4内に突出した電極ロー ノレ 2 5、 2 6に巻き付けられ、 エッチングチャンバ 2 4内において、 スパッタエ ッチング処理され活性化される。 The aluminum plate 22 and nickel plated steel plate 23 unwound from the unwinding reels 20 and 21 are partially wound around the electrode rolls 25 and 26, part of which protrude into the etching chamber 24. In the etching chamber 24, a sputter etching process is performed and activated.
この際、 活性化処理は、 本出願人が先に特開平 1 一 2 2 4 1 8 4号公報で開示 10 したように、 At this time, the activation process is performed by the present applicant as disclosed in Japanese Patent Application Laid-Open No. H11-222104,
. 1 X 1 0―1〜 1 X 1 0— 4 Torr の極低圧不活性ガス雰囲気中で、 . 1 X 1 0- 1 ~ 1 X 1 0- 4 Torr at extremely low pressure inert gas atmosphere,
•接合面を有する前記ニッケルメツキ鋼板とアルミニウム板をそれぞれアース接 地した一方の電極 Aとし、 絶縁支持された他の電極 Bとの間に 1〜5 0 MHzの交 流を印加してグロ一放電を行わせ、 • The nickel plating steel plate and the aluminum plate having a bonding surface are each set to one electrode A grounded to ground, and an alternating current of 1 to 50 MHz is applied between the electrode A and the other electrode B that is insulated and supported, and the Let it discharge,
ι ς 'かつ、 前記グロ一放電によって生じたプラズマ中に露出される電極の面積が、 電極 Βの面積の 1 / 3以下で、 The area of the electrode exposed in the plasma generated by the glow discharge is less than 1/3 of the area of the electrode 、,
. スパッタエッチング処理することによって行う。 This is performed by sputter etching.
その後、 真空槽 2 7内に設けた圧延ユニット 2 8によって冷間圧延され、 クラ ッド金属板 2 9は卷き取りロール 3 0に卷き取られる。 Thereafter, cold rolling is performed by a rolling unit 28 provided in a vacuum chamber 27, and the clad metal plate 29 is wound on a winding roll 30.
.0 次に、 クラッド金属板 2 9を所望の大きさに切断した後、 図 3に示すように、.0 Next, after cutting the clad metal plate 29 to a desired size, as shown in FIG.
D I加工を行う。 Perform DI processing.
即ち、 まず、 通常の絞り加工で、 最終製作物である電池ケース 1 0の外形より も大きい直径でかつ浅いクラッド金属板 2 9からなる有底の容器 3 1を製作する。 その後、 この有底の容器 3 1を、 順次、 絞りしごき直径が小さくなるように、 同 " 軸線上に多数配列された複数のしごきダイス 3 2〜3 5へ供給し、 絞りしごき直 径を最終製作物である電池ケース 1 0の外径とした最終段のしごきダイス 3 5に パンチ 3 6で加圧して連続的に通過させることによって電池ケース 1 0を製作す ることができる。 この連続的な絞りしごき加圧力を加えることによって、 電池ケ ース 1 0の内外面を平滑面に仕上げることができる。
なお、 説明上、 しごきダイスは同軸線上に多数配列した例を述べたが、 有底の 容器を加工するに際しては、 特に同軸上に並べてなくてもよい。 産業上の利用可能性 That is, first, a bottomed container 31 made of a shallow clad metal plate 29 having a diameter larger than the outer shape of the battery case 10 as a final product is produced by ordinary drawing. Thereafter, the bottomed container 31 is sequentially supplied to a plurality of ironing dies 32 to 35 arranged on the same axis so that the ironing diameter is reduced so that the ironing diameter is finally reduced. The battery case 10 can be manufactured by pressurizing the ironing die 35 of the final stage having the outer diameter of the manufactured battery case 10 with a punch 36 and continuously passing the same. The inner and outer surfaces of the battery case 10 can be finished to a smooth surface by applying a proper drawing and ironing pressure. In the description, an example in which a number of ironing dies are arranged on a coaxial line has been described. However, when processing a container having a bottom, it is not particularly necessary to arrange them on the same axis. Industrial applicability
以上説明してきたように、 請求項 1記載の電池ケースにおいては、 ニッケルメ ツキ鋼板にアルミニウム板をクラッドしたクラッド金属板を、 アルミニウム板が 内面側になるようにして有底筒状に絞り加工又は D I加工することによつて製造 するようにしたので、 耐食性に優れると共に、 機械的強度を高めることによって 溶液漏れのない密封性の高い電池ケースを製作することができる。 As described above, in the battery case according to claim 1, a clad metal plate in which a nickel plated steel plate is clad with an aluminum plate is drawn into a cylindrical shape with a bottom so that the aluminum plate is on the inner side, or DI is drawn. Since it is manufactured by processing, it is possible to manufacture a battery case having excellent corrosion resistance and high hermeticity without solution leakage by increasing mechanical strength.
請求項 2記載の電池ケースにおいては、 クラッド金属板は、 真空槽内でエッケ ルメツキ鋼板とアルミニウム板の接合面を予め特定の条件の下で活性化処理した 後、 前記ニッケルメツキ鋼板と前記アルミニウム板を重合して冷間圧延接合する ことによつて製造することにしたので、 クラッド金属板を優れた接合強度を有す ることができ、 このクラッド金属板を用いることによって、 D I加工や絞り加工 を円滑に行うことができる。 3. The battery case according to claim 2, wherein the clad metal plate is a nickel-plated steel plate and an aluminum plate after a joint surface between an aluminum plate and an aluminum plate is activated in a vacuum chamber under a specific condition in advance. Of the clad metal sheet and cold-rolled it, so that the clad metal sheet can have excellent joining strength. Can be performed smoothly.
請求項 3記載の電池ケースにおいては、 クラッド金属板の厚みを 0 . 2〜0 . 5 mmとし、 アルミニウム板の厚みを前記クラッド金属板の厚みの 2 0〜7 0 % とすることによって、 容積性や耐食性に優れると共に、 機械的強度を高めること によって溶液漏れのない密封性の高い電池ケースを製作することができる。
The battery case according to claim 3, wherein the thickness of the clad metal plate is set to 0.2 to 0.5 mm, and the thickness of the aluminum plate is set to 20 to 70% of the thickness of the clad metal plate. It is possible to manufacture a battery case that is excellent in water resistance and corrosion resistance and high in hermeticity without solution leakage by increasing mechanical strength.
Claims
1 . ニッケルメツキ鋼板にアルミニウム板をクラッドしたクラッド金属板を、 該アルミニウム板が内面側になるようにして有底筒状に絞り加工又は D I加工す ることによって製造したクラッド金属板からなる電池ケース。 1. A battery case made of a clad metal plate manufactured by drawing or DI processing a clad metal plate obtained by cladding an aluminum plate on a nickel plated steel plate so that the aluminum plate is on the inner surface side into a bottomed cylindrical shape. .
2 . 前記クラッド金属板は、 真空槽内で前記ニッケルメツキ鋼板と前記アルミ ニゥム板の接合面を予め活性化処理した後、 前記ニッケルメツキ鋼板と前記アル ミニゥム板を重合して冷間圧延接合することによって製造されたものでぁリ、 か つ、 前記活性化処理は、 2. In the clad metal plate, after the joint surface between the nickel plated steel plate and the aluminum plate is activated in advance in a vacuum chamber, the nickel plated steel plate and the aluminum plate are polymerized and cold roll bonded. And the activation process comprises:
• 1 X 1 0―1〜 1 X 1 CI—4 Torr の極低圧不活性ガス雰囲気中で、 • 1 X 1 0- 1 ~ 1 X 1 CI- 4 Torr at extremely low pressure inert gas atmosphere,
•接合面を有する前記ニッケルメツキ鋼板とアルミニウム板をそれぞれアース 接地した一方の電極 Aとし、 絶縁支持された他の電極 Bとの間に 1〜5 0 MHzの 交流を印加してグロ一放電を行わせ、 • The nickel plating steel plate and the aluminum plate having the joint surfaces are each used as one electrode A grounded to ground, and an AC of 1 to 50 MHz is applied between the electrode A and the other electrode B, which is insulated and supported, to cause a glow discharge. Let them do
•かつ、 前記グロ一放電によって生じたプラズマ中に露出される電極の面積が、 電極 Bの面積の 1 / 3以下で、 And the area of the electrode exposed in the plasma generated by the glow discharge is 1/3 or less of the area of the electrode B,
• スパッタエッチング処理されることを特徴とする請求項 1記載のクラッド金 属板からなる電池ケース。 • The battery case made of the clad metal plate according to claim 1, wherein the battery case is subjected to sputter etching.
3 . 前記クラッド金属板の厚みを 0 . 2〜0 . 5 mmとし、 前記アルミニウム 板の厚みを前記クラッド金属板の厚みの 2 0〜 7 0 %としたことを特徴とする請 求項 1又は 2記載のクラッド金属板からなる電池ケース。
3. The claim 1 or 2, wherein the thickness of the clad metal plate is 0.2 to 0.5 mm, and the thickness of the aluminum plate is 20 to 70% of the thickness of the clad metal plate. A battery case comprising the clad metal plate according to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU13519/99A AU1351999A (en) | 1997-12-08 | 1998-12-07 | Battery casing made of clad metallic sheet |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35196397 | 1997-12-08 | ||
| JP9/351963 | 1997-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999030377A1 true WO1999030377A1 (en) | 1999-06-17 |
Family
ID=18420836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1998/005476 WO1999030377A1 (en) | 1997-12-08 | 1998-12-07 | Battery casing made of clad metallic sheet |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU1351999A (en) |
| TW (1) | TW393793B (en) |
| WO (1) | WO1999030377A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005203169A (en) * | 2004-01-14 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Oblong nonaqueous electrolyte battery |
| CN112736333A (en) * | 2019-10-10 | 2021-04-30 | 瓦尔达微电池有限责任公司 | Secondary lithium battery and method of manufacturing the same |
| EP4300668A1 (en) * | 2022-06-28 | 2024-01-03 | CALB Co., Ltd. | Battery |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01224184A (en) * | 1988-03-02 | 1989-09-07 | Toyo Kohan Co Ltd | Method and device for manufacturing clad metal plate |
| JPH05174873A (en) * | 1991-12-24 | 1993-07-13 | Sanyo Electric Co Ltd | Nonaqueous electrolyte secondary battery resistant to overcharging |
-
1998
- 1998-12-01 TW TW087119861A patent/TW393793B/en not_active IP Right Cessation
- 1998-12-07 WO PCT/JP1998/005476 patent/WO1999030377A1/en active Application Filing
- 1998-12-07 AU AU13519/99A patent/AU1351999A/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01224184A (en) * | 1988-03-02 | 1989-09-07 | Toyo Kohan Co Ltd | Method and device for manufacturing clad metal plate |
| JPH05174873A (en) * | 1991-12-24 | 1993-07-13 | Sanyo Electric Co Ltd | Nonaqueous electrolyte secondary battery resistant to overcharging |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005203169A (en) * | 2004-01-14 | 2005-07-28 | Matsushita Electric Ind Co Ltd | Oblong nonaqueous electrolyte battery |
| CN112736333A (en) * | 2019-10-10 | 2021-04-30 | 瓦尔达微电池有限责任公司 | Secondary lithium battery and method of manufacturing the same |
| EP4300668A1 (en) * | 2022-06-28 | 2024-01-03 | CALB Co., Ltd. | Battery |
Also Published As
| Publication number | Publication date |
|---|---|
| TW393793B (en) | 2000-06-11 |
| AU1351999A (en) | 1999-06-28 |
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