JPS63298970A - Manufacture of nonaqueous solvent battery - Google Patents
Manufacture of nonaqueous solvent batteryInfo
- Publication number
- JPS63298970A JPS63298970A JP62132224A JP13222487A JPS63298970A JP S63298970 A JPS63298970 A JP S63298970A JP 62132224 A JP62132224 A JP 62132224A JP 13222487 A JP13222487 A JP 13222487A JP S63298970 A JPS63298970 A JP S63298970A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- metal
- metal pipe
- battery
- plug
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000002904 solvent Substances 0.000 title claims description 3
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 49
- 238000003466 welding Methods 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 14
- 239000003125 aqueous solvent Substances 0.000 claims description 12
- 239000008151 electrolyte solution Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000007774 positive electrode material Substances 0.000 claims description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000012212 insulator Substances 0.000 abstract 1
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000003566 sealing material Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- KPZGRMZPZLOPBS-UHFFFAOYSA-N 1,3-dichloro-2,2-bis(chloromethyl)propane Chemical compound ClCC(CCl)(CCl)CCl KPZGRMZPZLOPBS-UHFFFAOYSA-N 0.000 description 2
- 241001137251 Corvidae Species 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing 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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/14—Cells with non-aqueous electrolyte
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
- H01M50/664—Temporary seals, e.g. for storage of instant batteries or seawater batteries
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
- H01M50/645—Plugs
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Primary Cells (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、負極にアルカリ金属、正極活物質にオキシハ
ロゲン化物を用いた非水溶媒電池の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a non-aqueous solvent battery using an alkali metal as a negative electrode and an oxyhalide as a positive electrode active material.
[従来の技術]
負極としてリチウム、ナトリウム等を用いた非水溶媒電
池はエネルギー密度が大きく、貯蔵特性に優れ、かつ作
動温度範囲が広いという特徴をもち、電卓、時計、メモ
リのバックアップ電源として多用されている。こうした
電池の中でも負極にリチウムを用い、塩化チオニルや塩
化スルフリル等のイオウ、又はリンのオキシハロゲン化
物を主正極活物質とし、かつ炭素及び金属集電体からな
る正極を用いた電池は、特にエネルギー密度が大きいた
めに注目されている。[Prior art] Non-aqueous solvent batteries that use lithium, sodium, etc. as the negative electrode have high energy density, excellent storage characteristics, and a wide operating temperature range, and are often used as backup power sources for calculators, watches, and memories. has been done. Among these batteries, batteries that use lithium as the negative electrode, sulfur or phosphorus oxyhalide such as thionyl chloride or sulfuryl chloride as the main positive electrode active material, and a positive electrode consisting of carbon and metal current collectors are particularly energy efficient. It is attracting attention because of its high density.
ところで、上述した電池は主正極活物質として腐蝕性の
高い塩化チオニルや塩化スルフリル等のイオウ又はリン
のオキシハロゲン化物を用いているため′、該オキシハ
ロゲン化物が電池容器外に漏れ出して電池が組込まれた
機器を腐蝕しないように電池容器を液密に封口すること
が必要である。By the way, since the above-mentioned battery uses a highly corrosive sulfur or phosphorous oxyhalide such as thionyl chloride or sulfuryl chloride as the main positive electrode active material, the oxyhalide may leak out of the battery container and damage the battery. It is necessary to seal the battery container liquid-tight to prevent corrosion of the built-in equipment.
また、前記オキシハロゲン化物は液状で電解液を兼用し
ているが、揮発性が高く、毒性も強いため、作業環境上
、及び容器内での電解液の収容不足による電池特性の低
下防止の観点から容器内に発電要素(負極、セパレータ
、正極)を収容した後、同容器内に前記オキシハロゲン
化物を含む電解液を注入、収容することが必要である。In addition, although the oxyhalide is in liquid form and also serves as an electrolyte, it is highly volatile and highly toxic, so it is important to avoid deterioration of battery characteristics due to the work environment and insufficient capacity of the electrolyte in the container. After housing the power generation elements (negative electrode, separator, positive electrode) in the container, it is necessary to inject and store the electrolytic solution containing the oxyhalide in the container.
このようなことから、従来より第2図に示す構造の非水
溶媒電池が知られており、かつかかる電池は次のような
方法により製造されている。For this reason, a nonaqueous solvent battery having the structure shown in FIG. 2 has been known for some time, and such a battery is manufactured by the following method.
まず、−極性端子を兼ねる例えばステンレス製の有底円
筒形の缶体1の内周面に、金属リチウムからなる負極2
を圧着する。この負極2内側には、正極3が該負極2の
内側と缶体1の底面全体に亙って配置された例えばガラ
ス繊維製不織布からなるセパレータ4及び底紙5を介し
て収納されている。この正極3は、通常、ポリテトラフ
ルオロエチレン10重量%を結着材としたアセチレンブ
ラックからなる筒状の多孔質炭素体3aと、該炭素体3
aの中空部内面に配置されたニッケル製エキスバンドメ
タルからなる金属集電体3bとから構成されている。ま
た、前記正極3内には、後述する方法により例えば濃度
1.8モル/iの四塩化アルミニウムリチウム(LiA
、ffc)、)を含む塩化チオニル溶液(電解液)が注
入され、含浸されている。First, a negative electrode 2 made of metallic lithium is attached to the inner peripheral surface of a bottomed cylindrical can body 1 made of stainless steel, which also serves as a negative polarity terminal.
Crimp. A positive electrode 3 is housed inside the negative electrode 2 via a separator 4 made of a nonwoven fabric made of glass fiber, for example, and a bottom paper 5, which are arranged over the inside of the negative electrode 2 and the entire bottom surface of the can body 1. This positive electrode 3 usually includes a cylindrical porous carbon body 3a made of acetylene black with 10% by weight of polytetrafluoroethylene as a binder, and a cylindrical porous carbon body 3a.
A metal current collector 3b made of expanded metal made of nickel is disposed on the inner surface of the hollow portion of a. Further, in the positive electrode 3, for example, lithium aluminum tetrachloride (LiA
, ffc), ) is injected and impregnated with a thionyl chloride solution (electrolyte).
次いで、下端にリード線6が取着された他極性端子を兼
ねる注液用金属′パイプ7を該リード線6を介して前記
金属集電体3bに接続した後、該パイプ7を前記正極3
上方の缶体1内の前記セパレータ4上部に支持された絶
縁紙8の穴を挿通させる。Next, a metal pipe 7 for liquid injection, which also serves as a terminal of the other polarity and has a lead wire 6 attached to its lower end, is connected to the metal current collector 3b via the lead wire 6, and then the pipe 7 is connected to the positive electrode 3.
The insulating paper 8 supported above the separator 4 in the upper can body 1 is inserted through the hole.
つづいて、前記金属パイプ7をステンレス製の蓋体9の
中心穴10を挿通させ、該蓋体9を前記缶体1の上部開
口部に嵌合させ、該蓋体9の外周縁と缶体1の接触箇所
とをレーザ溶接して封口する。Next, the metal pipe 7 is inserted through the center hole 10 of the lid 9 made of stainless steel, the lid 9 is fitted into the upper opening of the can 1, and the outer periphery of the lid 9 and the can 1 and the contact point is laser welded and sealed.
なお、前記蓋体9の中心穴10と前記パイプ7との隙間
に例えばガラス製シール材11を介在させ、該シール材
11により該パイプ7と蓋体9を予めハーメティクシー
ルして封着しである。このようにして電解液が収容され
ていない状態の電池前駆体を組立てる。Note that a sealing material 11 made of glass, for example, is interposed in the gap between the center hole 10 of the lid 9 and the pipe 7, and the pipe 7 and the lid 9 are hermetically sealed in advance using the sealing material 11. It is. In this way, a battery precursor is assembled without containing an electrolyte.
次いで、前述した電解液を前記パイプ7を通して缶体1
内に所定量注入し、電解液12を収容する。Next, the electrolytic solution described above is passed through the pipe 7 to the can body 1.
A predetermined amount of the electrolytic solution 12 is injected into the container.
つづいて、前記パイプ7内にステンレス製の栓体13を
挿入した後、該栓体13のパイプ7との接触箇所全体を
直接レーザ溶接して、一体化し、液密に封口する。Subsequently, after inserting the stainless steel plug 13 into the pipe 7, the entire contact portion of the plug 13 with the pipe 7 is directly laser welded to integrate and seal the pipe 7 in a liquid-tight manner.
[発明が解決しようとする問題点コ
しかしながら、上述した方法では次のような問題があっ
た。[Problems to be Solved by the Invention However, the above-mentioned method has the following problems.
即ち、金属パイプ上部と栓体とをレーザ溶接する際、電
解液の注入工程で該パイプ内面に付着した電解液が溶接
時の熱により蒸発し、ガス化してそれが外部に逃散して
行く過程で溶接部に“巣“と称される連続孔を発生する
。その結果、電池の液密性が損われ、電解液の漏液を招
き、製品の歩留りを低下させる。That is, when laser welding the upper part of a metal pipe and the stopper, the electrolyte that adheres to the inner surface of the pipe during the electrolyte injection process evaporates due to the heat during welding, gasifies, and escapes to the outside. This creates continuous holes called "crows" in the weld. As a result, the liquid tightness of the battery is impaired, leading to leakage of the electrolyte and reducing the yield of products.
また、上記溶接不良を防止するために栓体番金属パイプ
に挿入した後、金属パイプと栓体の接触面を仮封口し、
しかる後レーザ溶接を行なう方法も提案されている。し
かしながら、かかる方法でも金属パイプ及び栓体に付着
した電解液がレーザ溶接時に前述したのと同様な悪影響
を及ぼし、前記問題を解消するには至っていない。In addition, in order to prevent the above-mentioned welding defects, after inserting the plug into the metal pipe, the contact surface between the metal pipe and the plug is temporarily sealed.
A method has also been proposed in which laser welding is performed after a certain period of time. However, even with this method, the electrolytic solution adhering to the metal pipe and the stopper has the same adverse effect as mentioned above during laser welding, and the above-mentioned problem has not yet been solved.
本発明は、上記従来の問題点を解決するためになされた
もので、金属パイプに挿入した栓体をレーザ溶接する際
に生じる“巣”の発生を著しく抑制してそれらを液密に
信′頼性よくシールし得る非水溶媒電池の製造方法を提
供しようとするものである。The present invention has been made in order to solve the above-mentioned conventional problems, and it is possible to significantly suppress the generation of "porous holes" that occur when laser welding a plug inserted into a metal pipe, and to make them liquid-tight. The present invention aims to provide a method for manufacturing a non-aqueous solvent battery that can be reliably sealed.
[問題点を解決するための手段]
本発明は、−極性端子を兼ねる有底円筒状金属缶体内に
アルカリ金属からなる負極及び多孔質炭素を主構成材と
する正極をセパレータを介して収納し、予め金属パイプ
が絶縁材を介して封着された金属製蓋体を前記金属缶体
の上部開口部に溶着した後、オキシハロゲン化物を正極
活物質として含む電解液を前記金属パイプを通して前記
金属缶体内に注入、収容し、ひきつづき前記金属パイプ
内に栓体を挿入し、レーザ溶接して密封する非水溶媒電
池の製造において、前記金属パイプ内に前記栓体を挿入
し、該金属パイプ内に位置する栓体の所定部分を該パイ
プに対して仮封口し、ひきつづき該栓体を挿入した該金
属パイプ内の上部を洗浄した後、レーザ溶接することを
特徴とする非水溶媒電池の製造方法である。[Means for Solving the Problems] The present invention includes a negative electrode made of an alkali metal and a positive electrode made mainly of porous carbon, which are housed in a bottomed cylindrical metal can that also serves as a polar terminal, with a separator interposed therebetween. , after welding a metal lid to which a metal pipe is sealed in advance through an insulating material to the upper opening of the metal can, an electrolytic solution containing an oxyhalide as a positive electrode active material is passed through the metal pipe to the metal. In manufacturing a non-aqueous solvent battery, the battery is injected and housed in a can body, and then a stopper is inserted into the metal pipe and sealed by laser welding. Manufacturing a non-aqueous solvent battery characterized by temporarily sealing a predetermined part of the plug located in the pipe, and then cleaning the upper part of the metal pipe into which the plug is inserted, and then laser welding it. It's a method.
上記仮封口手段としては、仮封口した金属パイプと栓体
の部分が液密になるような方法であればどのような方法
でもよいが、例えば金属パイプを径方向に圧縮してカシ
メを行なう方法が好適である。As the temporary sealing means, any method may be used as long as the temporarily sealed metal pipe and the plug become liquid-tight, but for example, a method of compressing the metal pipe in the radial direction and caulking it is suitable.
上記洗浄に用いる洗浄液は電解液を良好に洗い流すこと
ができるものであればいかなるものでよく、例えばオキ
シハライド電解液の場合には該電解液に対する溶解性の
良好な水を用いればよい。The cleaning liquid used for the above cleaning may be any liquid as long as it can wash away the electrolyte well. For example, in the case of an oxyhalide electrolyte, water having good solubility in the electrolyte may be used.
[作用]
本発明によれば、金属パイプ内に前記栓体を挿入し、該
金属パイプ内に位置する栓体の所定部分を該パイプに対
して仮封口し、ひきつづき該栓体を挿入した該金属パイ
プ内の上部を洗浄することによって、溶接部となる金属
パイプと栓体の間の電解液を洗い流すことができる。そ
の結果、この後のレーザ溶接により付着した電解液が溶
接時の熱によって蒸発、ガス化して溶接部に“巣”が発
生するのを効果的に防止して、栓体を金属パイプに対し
て良好に溶接でき、液密にシール、封口された信頼性の
高い非水溶媒電池を得ることができる。[Function] According to the present invention, the plug is inserted into a metal pipe, a predetermined portion of the plug located inside the metal pipe is temporarily sealed with respect to the pipe, and then the plug is inserted into the metal pipe. By cleaning the upper part of the metal pipe, it is possible to wash away the electrolyte between the metal pipe and the stopper, which will be the welded part. As a result, the electrolyte that adheres to the metal pipe during subsequent laser welding is effectively prevented from evaporating and gasifying due to the heat during welding and creating "crows" in the welded area, and the plug body is attached to the metal pipe. It is possible to obtain a highly reliable non-aqueous solvent battery that can be welded well and is liquid-tightly sealed.
また、洗浄に際して電池内部に洗浄液が侵入するのを洗
浄の前工程で行なった仮封口により防止でき、電池特性
の低下が起こるのを阻止できる。Further, during cleaning, it is possible to prevent the cleaning liquid from entering the inside of the battery by the temporary sealing performed in the step before cleaning, and it is possible to prevent the battery characteristics from deteriorating.
[発明の実施例]
以下、本発明の実施例を第1図(A)、(B)を参照し
て詳細に説明する。なお、前述した第2図と同様な部材
は同符号を付して説明を省略する。[Embodiments of the Invention] Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1(A) and 1(B). Incidentally, the same members as those shown in FIG. 2 described above are given the same reference numerals and the explanation thereof will be omitted.
まず、前述したように電解液が収容されていない状態の
電池を組立てた後、濃度1.8モル/ノの四塩化アルミ
ニウムリチウム(L i A、& C,Il’4 )を
含む塩化チオニル溶液(電解液)を金属パイプ7を通し
て缶体1内に所定量注入し、電解液12を収容した。つ
づいて、前記パイプ7内にステンレス製の栓体13を挿
入した(第1図(A)図示)。First, as described above, after assembling a battery without containing an electrolyte, a thionyl chloride solution containing lithium aluminum tetrachloride (L i A, & C, Il'4) at a concentration of 1.8 mol/min is added. A predetermined amount of (electrolytic solution) was injected into the can body 1 through the metal pipe 7, and the electrolytic solution 12 was contained therein. Subsequently, a stainless steel stopper 13 was inserted into the pipe 7 (as shown in FIG. 1(A)).
ひきつづき、金属パイプ7内に位置する栓体13の中央
部に対応する該パイプ7部分を半径方向に圧縮してカシ
メ部14を形成し、仮封口を行なった(同図(B)図示
)。次いで、流水にて金属パイプ7内を洗浄した後、栓
体13のパイプ7との接触箇所全体を直接レーザ溶接し
て一体化し、封口することにより非水溶媒電池を製造し
た。Subsequently, a portion of the pipe 7 corresponding to the central portion of the stopper 13 located inside the metal pipe 7 was compressed in the radial direction to form a caulked portion 14, and a temporary seal was performed (as shown in FIG. 3B). Next, after washing the inside of the metal pipe 7 with running water, the entire contact portion of the stopper 13 with the pipe 7 was directly laser welded and sealed, thereby manufacturing a non-aqueous solvent battery.
比較例1
金属パイプへの栓体のレーザ溶接前に仮封口、洗浄を行
なわない以外、実施例と同様な方法により非水溶媒電池
を製造した。Comparative Example 1 A non-aqueous solvent battery was manufactured in the same manner as in Example except that temporary sealing and cleaning were not performed before laser welding the stopper to the metal pipe.
比較例2
金属パイプに栓体を挿入し、カシメにより仮封口した後
、洗浄を行なわずにレーザ溶接を行なった以外、実施例
と同様な方法により非水溶媒電池を製造した。Comparative Example 2 A non-aqueous solvent battery was manufactured in the same manner as in Example, except that a stopper was inserted into a metal pipe, temporarily sealed by caulking, and then laser welding was performed without cleaning.
しかして、本実施例及び比較例1.2により製造した電
池各々500個について、金属パイプと栓体との溶接封
口部に硝酸銀溶液を滴下し、白色を呈する個数を調べた
。その結果、本実施例の方法で製造された電池では50
0個全石臼色を呈することがなかった。これに対し、比
較例1で製造された電池では500個中3G個、比較例
2で製造された電池では500個中l6が白色を呈する
ことがわかった。For each of 500 batteries produced in this Example and Comparative Example 1.2, a silver nitrate solution was dropped into the welded seal between the metal pipe and the stopper, and the number of batteries exhibiting white color was determined. As a result, in the battery manufactured by the method of this example, 50
0 pieces did not exhibit a stone color. On the other hand, it was found that 3G out of 500 batteries manufactured in Comparative Example 1 and 16 out of 500 batteries manufactured in Comparative Example 2 exhibited white color.
[発明の効果]
以上詳述した如く、本発明の非水溶媒電池の製造方法に
よれば金属パイプに挿入した栓体をレーザ溶接する際に
生じる“巣”の発生を著しく抑制してそれらを液密に信
頼性よくシールでき、ひいては電池使用時での電解液の
漏洩がなく、電池を組込んだ電子機器への腐蝕を防止で
きる等顕著な効果を有する。[Effects of the Invention] As detailed above, according to the method for manufacturing a non-aqueous solvent battery of the present invention, the occurrence of "porosity" that occurs when laser welding a stopper inserted into a metal pipe can be significantly suppressed and eliminated. It can be sealed liquid-tight and reliably, and has remarkable effects such as no electrolyte leakage when the battery is in use, and corrosion to electronic equipment incorporating the battery can be prevented.
第1図(A)、(B)は本発明の実施例における金属パ
イプへの栓体のレーザ溶接工程を示す断面図、第2図は
従来方法で製造された非水溶媒電池の断面図である。
■・・・缶体、2・・・負極、し・・・正極、4・・・
セパレータ、7・・・パイプ、9・・・蓋体、11・・
・ガラス製シール材、12・・・電解液、13・・・栓
体、14・・・カシメ部。
出願人代理人 弁理士 鈴江武彦
(A)
第1図Figures 1 (A) and (B) are cross-sectional views showing the laser welding process of a stopper to a metal pipe in an embodiment of the present invention, and Figure 2 is a cross-sectional view of a non-aqueous solvent battery manufactured by a conventional method. be. ■...Can body, 2...Negative electrode,...Positive electrode, 4...
Separator, 7...pipe, 9...lid, 11...
- Glass sealing material, 12... Electrolyte, 13... Plug body, 14... Caulking part. Applicant's agent Patent attorney Takehiko Suzue (A) Figure 1
Claims (1)
属からなる負極及び多孔質炭素を主構成材とする正極を
セパレータを介して収納し、予め金属パイプが絶縁材を
介して封着された金属製蓋体を前記金属缶体の上部開口
部に溶着した後、オキシハロゲン化物を正極活物質とし
て含む電解液を前記金属パイプを通して前記金属缶体内
に注入、収容し、ひきつづき前記金属パイプ内に栓体を
挿入し、レーザ溶接して密封する非水溶媒電池の製造に
おいて、前記金属パイプ内に前記栓体を挿入し、該金属
パイプ内に位置する栓体の所定部分を該パイプに対して
仮封口し、ひきつづき該栓体を挿入した該金属パイプ内
の上部を洗浄した後、レーザ溶接することを特徴とする
非水溶媒電池の製造方法。A negative electrode made of an alkali metal and a positive electrode made mainly of porous carbon were housed in a bottomed cylindrical metal case that also served as a unipolar terminal, with a separator interposed therebetween, and a metal pipe was sealed in advance with an insulating material interposed therebetween. After welding a metal lid to the upper opening of the metal can, an electrolytic solution containing an oxyhalide as a positive electrode active material is injected and contained in the metal can through the metal pipe, and then continued into the metal pipe. In manufacturing a nonaqueous solvent battery in which a stopper is inserted and sealed by laser welding, the stopper is inserted into the metal pipe, and a predetermined portion of the stopper located inside the metal pipe is attached to the pipe. A method for manufacturing a non-aqueous solvent battery, which comprises temporarily sealing the pipe, cleaning the upper part of the metal pipe into which the plug is inserted, and then laser welding the pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62132224A JPS63298970A (en) | 1987-05-28 | 1987-05-28 | Manufacture of nonaqueous solvent battery |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62132224A JPS63298970A (en) | 1987-05-28 | 1987-05-28 | Manufacture of nonaqueous solvent battery |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63298970A true JPS63298970A (en) | 1988-12-06 |
Family
ID=15076288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62132224A Pending JPS63298970A (en) | 1987-05-28 | 1987-05-28 | Manufacture of nonaqueous solvent battery |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63298970A (en) |
-
1987
- 1987-05-28 JP JP62132224A patent/JPS63298970A/en active Pending
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