JP4292444B2 - Electrolyte filling method in manufacturing process of dry cell - Google Patents

Electrolyte filling method in manufacturing process of dry cell Download PDF

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JP4292444B2
JP4292444B2 JP2000126671A JP2000126671A JP4292444B2 JP 4292444 B2 JP4292444 B2 JP 4292444B2 JP 2000126671 A JP2000126671 A JP 2000126671A JP 2000126671 A JP2000126671 A JP 2000126671A JP 4292444 B2 JP4292444 B2 JP 4292444B2
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electrolyte
supply chamber
battery case
electrolytic solution
impregnated
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JP2001266847A (en
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秀世 藤井
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ノードソン株式会社
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    • 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
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E60/10—Energy storage using batteries

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Description

【０００１】
【発明の属する技術分野】
本発明は、乾電池の製造工程で乾電池ケース内に電解液を充填する技術の改良に関する。
【０００２】
【従来の技術】
従来、あらかじめ電解液を保持するための電解液含浸保持材が装填された電池ケース内に、電解液を充填する方法としては、大気圧中において精密液体吐出装置を用いて一定量の電解液を注入していた。
【０００３】
【発明が解決しようとする課題】
ところが、前記した電解液の充填方法では、電解液含浸保持材が電解液を十分に吸収含浸するのに時間がかかり、少しずつ時間をかけて注入するか、複数回にわけて電解液を注入するなどの処置が取られていたため、乾電池の製造工程で電解液の注入工程に時間を取られ、改善が求められていた。
【０００４】
そこで、電解液の吸収含浸の促進を図るため、あらかじめ電解液を保持するための電解液含浸保持材が装填された電池ケース内を真空に保持し、真空に維持された電池ケース内へ電解液を注入することが試みられていた。電池ケース内を真空にする方法には種々の方法がある。例えば電池ケースを真空チャンバー内に配置し、真空チャンバー内全体を真空ポンプで真空にする方法も試みられているが、ここでは電池ケース内を直接真空ポンプで吸引する方法の事例を、説明用の概念図である図２を用いて説明する。
【０００５】
図において符号３１は電解液注出用の吐出ガンで、該吐出ガン３１はガンボデイ３２、ニードル３３、ニードル３３を開閉作動させるアクチュエータ３４、吐出ノズル３７、吐出ノズル３７をガンボデイ３２に取り付けるための袋ナット３８から構成され、ガンボデイ３２に設けた電解液供給用の孔３２ｃには電解液圧送装置４２が配管接続されている。９は電池ケースで、該電池ケース９の中には電解液４９を含浸保持するための電解液含浸保持材１０が充填されている。４１は電池ケース９を保持するクランプ部材で、該クランプ部材４１には吐出ガン３１の吐出ノズル３７を差し込む孔４１ａと電池ケース内を真空排気するための孔４１ｂが設けられ、真空排気用の孔４１ｂには弁４３を介して真空ポンプ４４が配管接続されている。４８はシール材で、電池ケース９の内部と外気を遮断するためのものである。
【０００６】
そして、まずあらかじめ電解液含浸保持材１０が装填されている電池ケース９をクランプ部材４１にセットし、真空ポンプ４４によって電池ケース９内を真空にし、電解液圧送装置４２から吐出ガン３１に圧送された電解液４９を、図示していない制御装置からの信号で、吐出ガン３１のアクチュエータ３４を作動させニードル３３を開き、真空状態に維持された電池ケース９内に注入した。
【０００７】
このような電解液の充填方法によって、たしかに電解液含浸保持材が電解液を吸収含浸する速度は大幅に改善され、電池製造工程も短縮された。しかし、予期しなかった次の問題が発生した。それは吐出ガンからの電解液の吐出量にばらつきが発生することである。
【０００８】
これは電池ケース内を真空にせずに大気圧状態で吐出した場合には、全く問題にならなかったことである。すなわち、大気圧状態では一回の所定吐出量に対して、およそ±１．０％という高精度の吐出が行われるのに対して、電池ケース内を真空状態（約７５０トール）にして吐出した場合、吐出量のばらつきは±５．０％以上にもなってしまうことである。これは電池ケース内の真空及び真空度のばらつきが、電解液注出のばらつきを発生させる原因とみられる。
【０００９】
このような電解液の吐出量に大きなばらつきが発生すると、種々の問題が発生する。すなわち、電解液が規定量に達しないと電池の性能の低下をまねき、また、規定量を大幅に越えると液漏れを起こし、製造装置や周囲を汚したりあるいは後工程の作業に支障を来すなどのよくない影響を与える等の問題を生ずることである。
【００１０】
本発明は、これらの問題点に鑑みてなされたものであり、乾電池の製造工程における電池ケース内の電解液含浸保持材に電解液を注入し含浸させる作業において、短時間に効率よく電解液を含浸させることができ、しかも電解液注入のための吐出量にばらつきがなく高精度に電解液を吐出できる、電解液充填方法を提供することを目的とするものである。
【００１１】
【課題を解決するための手段】
前記した課題を解決するために、本発明では次のような方法とした。すなわちガンボデイ２の内部に電解液補助供給室２ａと電解液主供給室２ｂとを備え、電解液補助供給室２ａには、電解液補助供給室２ａと電解液主供給室２ｂとの間の連通をオン・オフ制御し、第１アクチュエータ４によって開閉動作をさせられる第１ニードル３を備え、電解液主供給室２ｂには、電解液主供給室２ｂの吐出口をオン・オフ制御し、第２アクチュエータ６によって開閉操作をさせられる第２ニードル５を備え、電解液主供給室２ｂの吐出口に接続された吐出ノズル７とを備えてなる電解液注出用の吐出ガン１と、吐出ガン１の下部には、吐出ノズル７が差し込まれ、電池ケース９内を真空排気するための真空ポンプ１４が配管を介して接続され、電池ケース９を保持するクランプ部材１１とを備えると共に、電解液補助供給室２ａに配管で接続された電解液圧送装置１２を備え、てなる電解液充填装置を用い、
あらかじめ電解液を保持するための電解液含浸保持材１０が装填された電池ケース９内の該電解液含浸保持材１０に電解液を注入し含浸させるに際して、
該電解液含浸保持材１０が装填された電池ケース９を電解液充填装置のクランプ部材１１にセットし、該電池ケース９内を真空ポンプ１４によって真空状態にする工程と、
電解液圧送装置１２から電解液を前記電解液充填装置の電解液補助供給室２ａへ圧送し、さらに電解液補助供給室２ａ内の該加圧状態の電解液を第１アクチュエータ４を作動させて第１ニードル３をあらかじめ設定した時間だけ開くことにより該電解液補助供給室２ａから所定の１充填量を電解液充填装置の電解液主供給室２ｂ内へ供給し保持する工程と、
前記電解液主供給室２ｂ内に保持された１充填量の電解液を第２アクチュエータ６を作動させて第２ニードル５を開くことにより該吐出ノズル７を通して前記真空状態に維持された状態の電池ケース９内へ注入する工程と、
十分に電解液が電解液含浸保持材１０に注入含浸された電池ケース９をその真空状態を開放して電解液充填装置のクランプ部材１１から取り外して次工程へ送る工程と、を含む作業工程が１サイクルとして繰り返されるようにし、電解液を電池ケース９内の電解液含浸保持材１０に短時間に含浸させ、かつ電池ケース９内の真空圧に影響されることなく正確な充填量を充填することを特徴とする、乾電池の製造工程における電解液充填方法とした。
【００１２】
【発明の実施の形態】
次に本発明の実施の形態を説明する。本発明では、まずあらかじめ電解液を保持するための電解液含浸保持材が装填された電池ケースを電解液充填装置にセットし該電池ケース内を真空状態にすることにより、注入する電解液が電解液含浸保持材に短時間に、す早く浸透含浸されるのを助ける。
【００１３】
そして、電解液圧送装置から前記電解液充填装置の電解液補助供給室へ圧送された電解液を、所定の１充填量を電解液補助供給室から電解液主供給室内へ供給することにより、電池ケース内の真空圧に影響されることなく、１個の電池に充填すべき電解液の量を正確に、電解液主供給室内に保持することができる。
【００１４】
そして、前記電解液主供給室内に保持された１充填量の電解液を前記真空状態に維持された電池ケース内へ注入すれば、正確な充填量の電解液を電池ケース内へ注入することができ、しかも電池ケース内は真空に維持されているので、電解液はす早く電解液含浸保持材に浸透し、含浸保持される。
【００１５】
そして、十分に電解液が注入含浸された電池ケースを電解液充填装置から取り外して次工程へ送ることにより、乾電池の製造工程における電池ケース内に電解液を充填する工程が完了する。そして、製造ラインの流れに従ってこのサイクルを繰り返すことにより、本発明の目的が達成される。
【００１６】
【実施例】
以下本発明の乾電池の製造工程における電解液充填方法を、その実施例を示す図と共に具体的に説明する。図１は本発明を実施するための装置の概念を示した図である。
【００１７】
図において符号１は電解液注出用の吐出ガンで、該吐出ガン１は内部に２つの部屋すなわち電解液補助供給室２ａと電解液主供給室２ｂとを構成するガンボデイ２と、電解液補助供給室２ａと電解液主供給室２ｂとの間の連通をオン・オフ制御する第１ニードル３と、該第１ニードル３を開閉動作させる第１アクチュエータ４と、電解液主供給室２ｂの吐出口をオン・オフ制御する第２ニードル５と、該第２ニードル５を開閉動作させる第２アクチュエータ６と、吐出ノズル７と、該吐出ノズル７をガンボデイ２に取り付けるための袋ナット８とから構成される。
【００１８】
そして、ガンボデイ２に設けた電解液供給用孔２ｃには電解液圧送装置１２が配管接続され、また、ガス供給孔２ｄには電磁弁１５を介してガス供給装置１６が配管接続されている。９は電池ケースで、該電池ケース９の内部には電解液含浸保持材１０が装填されている。１１はクランプ部材で、該クランプ部材１１は電池ケース９を保持すると共に、吐出ノズル７を差し込む孔１１ａと電池ケース９内を真空排気するための孔１１ｂが設けられている。そして真空排気用の孔１１ｂには電磁弁１３を介して真空ポンプ１４が配管接続されている。１８はシール材で電池ケース９の内部と外気を遮断するためのものである。
【００１９】
１７は本吐出ガン装置の作動を制御するための制御装置で、該制御装置１７は第１アクチュエータ４、第２アクチュエータ６、電磁弁１３、電磁弁１５等とそれぞれ信号ケーブルで接続される。
【００２０】
そして、まずあらかじめ電解液含浸保持材１０が装填されている電池ケース９をクランプ部材１１にセットし、真空ポンプ１４によって電池ケース９内を真空にする。そして、電解液圧送装置１２から吐出ガン１の電解液補助供給室２ａに圧送された加圧状態の電解液１９を、制御装置１７からの信号で、第１アクチュエータ４を作動させて第１ニードル３を開とし、あらかじめ設定した１充填量だけ電解液主供給室２ｂへ注出する。電解液の１充填量は制御装置１７に設定した第１ニードル３の開時間によって設定される。電解液主供給室２ｂは、１充填量の電解液１９を受容するに十分な容積を持つよう設計される。
【００２１】
電解液主供給室２ｂには電解液１９を吐出するに必要な圧力のガスがガス供給装置１６から供給されている。本実施例では圧力約０．５ｋｇ／ｃｍ２のガスを供給した。なお本実施例では常時ガス圧をかけたままで、１充填量の電解液を電解液補助供給室２ａから電解液主供給室２ｂへ注出しても、１充填量にばらつきは無かったが、ガス圧に影響されて１充填量にばらつきが発生するようであれば、電磁弁１５をニードル３の開動作に同期させて操作し、電解液主供給室２ｂのガス圧を開放することにより、ガス圧の影響を回避することもできる。
【００２２】
電解液主供給室２ｂに所定の電解液が保持されたら、次に制御装置１７からの信号で第２アクチュエータ６を作動させ、第２ニードル５を開き、真空状態に維持された電池ケース９内に電解液１９を注入する。そして電解液が十分に電解液含浸保持材１０に浸透吸収されたら、電磁弁１３を作動させて電池ケース９内の真空状態を開放して電池ケース９をクランプ部材１１から取り外し、次工程へと送る。これで一連の電解液充填作業が終了し、次の電池ケースをクランプ部材１１へセットし、一連の作業サイクルが繰り返される。
【００２３】
これら、電池ケース内の真空とその開放、ニードルの開閉による電解液の注出、電解液主供給室へのガスの供給と開放等の一連の動作は、制御装置１７にあらかじめ設定したプログラムによって行われる。なお、電池ケース内を真空にする方法には種々の方法があり、例えば前述したように、電池ケースを真空チャンバー内に配置し、真空チャンバー内全体を真空ポンプで真空にすることにより電池ケース内を真空にする方法もあるが、ここでは電池ケース内を直接真空ポンプで吸引する方法の事例を説明した。従って、電池ケース内を真空にする方法は、本実施例によって限定されるものではない。
【００２４】
【発明の効果】
以上説明したように本発明によれば、乾電池の製造工程における電池ケース内の電解液含浸保持材に電解液を注入し含浸させる作業において、電池ケース内を真空にすることにより、短時間に効率よく電解液を含浸させることができ、しかも１充填量に必要な電解液を電解液補助供給室から電解液主供給室へ注出保持しておくことにより、電解液注入のための吐出量にばらつきがなく高精度に電解液を吐出できる電解液充填方法を提供することができる。
【図面の簡単な説明】
【図１】本発明による電解液充填方法の実施例の説明図。
【図２】従来の電解液充填方法の説明図。
【符号の説明】
１…吐出ガン、２…ガンボデイ、２ａ…電解液補助供給室、２ｂ…電解液主供給室、９…電池ケース、１０…電解液含浸保持材、１１…クランプ部材、１２…電解液圧送装置、１４…真空ポンプ、１６…ガス供給装置、１７…制御装置。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a technique for filling an electrolyte in a dry battery case in a dry battery manufacturing process.
[0002]
[Prior art]
Conventionally, as a method of filling an electrolyte solution in a battery case that is preliminarily loaded with an electrolyte-impregnated holding material for holding the electrolyte solution, a certain amount of electrolyte solution is applied using a precision liquid discharge device at atmospheric pressure. I was injecting.
[0003]
[Problems to be solved by the invention]
However, in the above-described electrolytic solution filling method, it takes time for the electrolytic solution impregnated holding material to sufficiently absorb and impregnate the electrolytic solution, and it takes time to inject or inject the electrolytic solution in multiple times. Since measures such as this were taken, time was required for the electrolyte injection process in the manufacturing process of the dry battery, and improvement was demanded.
[0004]
Therefore, in order to promote absorption and impregnation of the electrolytic solution, the inside of the battery case loaded with the electrolytic solution impregnation holding material for holding the electrolytic solution is held in vacuum, and the electrolytic solution is put into the battery case maintained in vacuum. Attempts have been made to inject. There are various methods for evacuating the battery case. For example, a method of placing a battery case in a vacuum chamber and evacuating the entire vacuum chamber with a vacuum pump has been tried, but here, an example of a method of directly sucking the inside of a battery case with a vacuum pump is described. This will be described with reference to FIG. 2 which is a conceptual diagram.
[0005]
In the figure, reference numeral 31 denotes a discharge gun for dispensing an electrolyte solution. The discharge gun 31 is a gun body 32, a needle 33, an actuator 34 for opening and closing the needle 33, a discharge nozzle 37, and a bag for attaching the discharge nozzle 37 to the gun body 32. An electrolyte solution feeding device 42 is connected to the electrolyte solution supply hole 32c provided in the gun body 32 by a pipe 38. Reference numeral 9 denotes a battery case, and the battery case 9 is filled with an electrolytic solution impregnated holding material 10 for impregnating and holding the electrolytic solution 49. Reference numeral 41 denotes a clamp member for holding the battery case 9. The clamp member 41 is provided with a hole 41a for inserting the discharge nozzle 37 of the discharge gun 31 and a hole 41b for evacuating the inside of the battery case. A vacuum pump 44 is connected to the pipe 41b through a valve 43. Reference numeral 48 denotes a sealing material for blocking the inside of the battery case 9 from the outside air.
[0006]
First, the battery case 9 preliminarily loaded with the electrolyte solution impregnated holding material 10 is set on the clamp member 41, the inside of the battery case 9 is evacuated by the vacuum pump 44, and is pumped from the electrolyte pumping device 42 to the discharge gun 31. The electrolyte 49 was injected into the battery case 9 maintained in a vacuum state by operating the actuator 34 of the discharge gun 31 and opening the needle 33 in response to a signal from a control device (not shown).
[0007]
By such an electrolytic solution filling method, the rate at which the electrolytic solution impregnated holding material absorbs and impregnates the electrolytic solution is significantly improved, and the battery manufacturing process is shortened. However, the following unexpected problem occurred. That is, variation occurs in the discharge amount of the electrolytic solution from the discharge gun.
[0008]
This is because there was no problem at all when the battery case was discharged under atmospheric pressure without being evacuated. That is, in the atmospheric pressure state, a highly accurate discharge of about ± 1.0% is performed for a predetermined discharge amount at one time, whereas the battery case was discharged in a vacuum state (about 750 Torr). In this case, the variation in the ejection amount is as much as ± 5.0% or more. This seems to be caused by variations in the vacuum and degree of vacuum in the battery case that cause variations in the electrolyte dispensing.
[0009]
When such a large variation in the discharge amount of the electrolytic solution occurs, various problems occur. In other words, if the electrolyte does not reach the specified amount, the performance of the battery will be degraded, and if the amount exceeds the specified amount, liquid leakage will occur, contaminating the manufacturing equipment and surroundings, or hindering the work of the subsequent process. This causes problems such as adverse effects.
[0010]
The present invention has been made in view of these problems, and in an operation of injecting and impregnating an electrolytic solution into an electrolytic solution-impregnated holding material in a battery case in a manufacturing process of a dry battery, the electrolytic solution can be efficiently introduced in a short time. An object of the present invention is to provide an electrolytic solution filling method that can be impregnated and that can discharge the electrolytic solution with high accuracy without variation in the discharge amount for injecting the electrolytic solution.
[0011]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention adopts the following method. That is, the gun body 2 includes an electrolyte auxiliary supply chamber 2a and an electrolyte main supply chamber 2b, and the electrolyte auxiliary supply chamber 2a communicates between the electrolyte auxiliary supply chamber 2a and the electrolyte main supply chamber 2b. Is provided with a first needle 3 that can be opened and closed by the first actuator 4, and the electrolyte main supply chamber 2b is controlled to turn on and off the discharge port of the electrolyte main supply chamber 2b. 2. Discharge gun 1 for dispensing electrolyte, comprising a second needle 5 that can be opened and closed by an actuator 6, and a discharge nozzle 7 connected to the discharge port of the electrolyte main supply chamber 2b, and a discharge gun 1, a discharge nozzle 7 is inserted, a vacuum pump 14 for evacuating the battery case 9 is connected via a pipe, and a clamp member 11 for holding the battery case 9 is provided. Support Including the electrolytic fluid delivery mechanism 12 connected to the chamber 2a by a pipe, the electrolytic solution filling apparatus used comprising Te,
In injecting and impregnating the electrolytic solution into the electrolytic solution impregnated holding material 10 in the battery case 9 loaded with the electrolytic solution impregnated holding material 10 for holding the electrolytic solution in advance .
Setting the battery case 9 loaded with the electrolyte impregnated holding material 10 to a clamp member 11 of an electrolyte filling device , and evacuating the battery case 9 with a vacuum pump 14 ;
The electrolyte solution from the electrolyte pumping device 12 is pumped into the electrolyte auxiliary supply chamber 2a of the electrolyte filling apparatus, and further an electrolytic solution of the pressurizing state of the electrolyte auxiliary supply chamber 2a actuates the first actuator 4 Supplying and holding a predetermined 1 filling amount from the electrolyte auxiliary supply chamber 2a into the electrolyte main supply chamber 2b of the electrolyte filling device by opening the first needle 3 for a preset time ;
A battery in a state of being maintained in the vacuum state through the discharge nozzle 7 by operating the second actuator 6 to open the second needle 5 with one filling amount of the electrolyte held in the electrolyte main supply chamber 2b . Injecting into the case 9 ;
And a step of releasing the vacuum state of the battery case 9 in which the electrolyte is sufficiently impregnated and impregnated in the electrolyte impregnated holding material 10 and removing the battery case 9 from the clamp member 11 of the electrolyte filling device and sending it to the next process It is repeated as one cycle , and the electrolyte solution is impregnated in the electrolyte solution impregnated holding material 10 in the battery case 9 in a short time, and an accurate filling amount is filled without being affected by the vacuum pressure in the battery case 9. It was set as the electrolyte solution filling method in the manufacturing process of the dry battery characterized by this.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. In the present invention, first, a battery case in which an electrolytic solution impregnation holding material for holding an electrolytic solution is loaded is set in an electrolytic solution filling device, and the inside of the battery case is evacuated so that the injected electrolytic solution is electrolyzed. It helps the liquid impregnation holding material to be impregnated quickly and quickly.
[0013]
Then, by supplying a predetermined 1 filling amount from the electrolyte auxiliary supply chamber to the electrolyte main supply chamber, the electrolyte fed from the electrolyte pumping device to the electrolyte auxiliary supply chamber of the electrolyte filling device is supplied to the battery. Without being affected by the vacuum pressure in the case, the amount of the electrolyte to be charged in one battery can be accurately held in the electrolyte main supply chamber.
[0014]
Then, if one filling amount of electrolyte held in the electrolyte main supply chamber is injected into the battery case maintained in the vacuum state, an accurate filling amount of electrolyte can be injected into the battery case. In addition, since the inside of the battery case is maintained in a vacuum, the electrolyte quickly penetrates into the electrolyte-impregnated holding material and is impregnated and held.
[0015]
Then, the battery case in which the electrolytic solution is sufficiently injected and impregnated is removed from the electrolytic solution filling apparatus and sent to the next step, whereby the step of filling the electrolytic solution in the battery case in the dry battery manufacturing process is completed. The object of the present invention is achieved by repeating this cycle according to the flow of the production line.
[0016]
【Example】
Hereinafter, the electrolytic solution filling method in the manufacturing process of the dry battery of the present invention will be described in detail with reference to the drawings showing the examples. FIG. 1 is a diagram showing the concept of an apparatus for carrying out the present invention.
[0017]
In the figure, reference numeral 1 denotes a discharge gun for dispensing an electrolyte, and the discharge gun 1 has two chambers, that is, a gun body 2 constituting an electrolyte auxiliary supply chamber 2a and an electrolyte main supply chamber 2b, and an electrolyte auxiliary. A first needle 3 that controls on / off of communication between the supply chamber 2a and the electrolyte main supply chamber 2b, a first actuator 4 that opens and closes the first needle 3, and discharge of the electrolyte main supply chamber 2b Consists of a second needle 5 that controls on / off of the outlet, a second actuator 6 that opens and closes the second needle 5, a discharge nozzle 7, and a cap nut 8 for attaching the discharge nozzle 7 to the gun body 2 Is done.
[0018]
An electrolytic solution feeding device 12 is connected to the electrolytic solution supply hole 2 c provided in the gun body 2, and a gas supply device 16 is connected to the gas supply hole 2 d via an electromagnetic valve 15. Reference numeral 9 denotes a battery case, and an electrolytic solution impregnation holding material 10 is loaded in the battery case 9. A clamp member 11 holds the battery case 9, and is provided with a hole 11a for inserting the discharge nozzle 7 and a hole 11b for evacuating the inside of the battery case 9. A vacuum pump 14 is connected to the vacuum exhaust hole 11b through an electromagnetic valve 13 by piping. Reference numeral 18 denotes a sealing material for blocking the inside of the battery case 9 from the outside air.
[0019]
Reference numeral 17 denotes a control device for controlling the operation of the discharge gun device, and the control device 17 is connected to the first actuator 4, the second actuator 6, the electromagnetic valve 13, the electromagnetic valve 15 and the like through signal cables.
[0020]
First, the battery case 9 in which the electrolytic solution impregnated holding material 10 is loaded in advance is set on the clamp member 11, and the inside of the battery case 9 is evacuated by the vacuum pump 14. Then, the electrolyte 19 in a pressurized state, which is pumped from the electrolyte pumping device 12 to the electrolyte auxiliary supply chamber 2 a of the discharge gun 1, is actuated by the first actuator 4 in response to a signal from the control device 17, and the first needle 3 is opened, and a predetermined filling amount is poured into the electrolyte main supply chamber 2b. One filling amount of the electrolytic solution is set by the opening time of the first needle 3 set in the control device 17. The electrolyte main supply chamber 2b is designed to have a volume sufficient to receive one filling amount of the electrolyte 19.
[0021]
A gas having a pressure required to discharge the electrolytic solution 19 is supplied from the gas supply device 16 to the electrolytic solution main supply chamber 2b. In this example, a gas having a pressure of about 0.5 kg / cm 2 was supplied. In this embodiment, even when the gas pressure was constantly applied, even if one electrolyte amount of the electrolyte was poured from the electrolyte auxiliary supply chamber 2a to the electrolyte main supply chamber 2b, there was no variation in the one filler amount. If there is a variation in the filling amount due to the pressure, the solenoid valve 15 is operated in synchronism with the opening operation of the needle 3 to release the gas pressure in the electrolyte main supply chamber 2b, thereby The influence of pressure can also be avoided.
[0022]
When a predetermined electrolyte is held in the electrolyte main supply chamber 2b, the second actuator 6 is then actuated by a signal from the control device 17, the second needle 5 is opened, and the battery case 9 is maintained in a vacuum state. The electrolytic solution 19 is injected into the liquid. When the electrolyte is sufficiently permeated and absorbed by the electrolyte impregnated holding material 10, the electromagnetic valve 13 is operated to release the vacuum state in the battery case 9, and the battery case 9 is removed from the clamp member 11 to proceed to the next step. send. This completes a series of electrolyte filling operations, sets the next battery case on the clamp member 11, and repeats a series of work cycles.
[0023]
A series of operations such as vacuum and opening of the battery case, dispensing of the electrolyte by opening and closing the needle, and supply and release of gas to the electrolyte main supply chamber are performed by a program set in the control device 17 in advance. Is called. There are various methods for evacuating the battery case. For example, as described above, the battery case is placed in a vacuum chamber, and the entire vacuum chamber is evacuated by a vacuum pump. There is also a method of vacuuming, but here, an example of a method of directly sucking the inside of the battery case with a vacuum pump has been described. Therefore, the method of evacuating the battery case is not limited by this embodiment.
[0024]
【The invention's effect】
As described above, according to the present invention, in the work of injecting and impregnating the electrolytic solution into the electrolytic solution impregnated holding material in the battery case in the manufacturing process of the dry battery, it is efficient in a short time by evacuating the battery case. The electrolyte solution can be well impregnated, and the electrolyte solution required for one filling amount is poured out from the electrolyte auxiliary supply chamber to the electrolyte main supply chamber, so that the discharge amount for electrolyte injection can be reduced. It is possible to provide an electrolytic solution filling method capable of discharging an electrolytic solution with high accuracy without variation.
[Brief description of the drawings]
FIG. 1 is an explanatory view of an embodiment of an electrolytic solution filling method according to the present invention.
FIG. 2 is an explanatory view of a conventional electrolytic solution filling method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Discharge gun, 2 ... Gunbody, 2a ... Electrolyte auxiliary supply chamber, 2b ... Electrolyte main supply chamber, 9 ... Battery case, 10 ... Electrolyte impregnation holding material, 11 ... Clamp member, 12 ... Electrolyte pressure feeding apparatus, 14 ... vacuum pump, 16 ... gas supply device, 17 ... control device.

Claims (1)

ガンボデイ２の内部に電解液補助供給室２ａと電解液主供給室２ｂとを備え、電解液補助供給室２ａには、電解液補助供給室２ａと電解液主供給室２ｂとの間の連通をオン・オフ制御し、第１アクチュエータ４によって開閉動作をさせられる第１ニードル３を備え、電解液主供給室２ｂには、電解液主供給室２ｂの吐出口をオン・オフ制御し、第２アクチュエータ６によって開閉操作をさせられる第２ニードル５を備え、電解液主供給室２ｂの吐出口に接続された吐出ノズル７とを備えてなる電解液注出用の吐出ガン１と、吐出ガン１の下部には、吐出ノズル７が差し込まれ、電池ケース９内を真空排気するための真空ポンプ１４が配管を介して接続され、電池ケース９を保持するクランプ部材１１とを備えると共に、電解液補助供給室２ａに配管で接続された電解液圧送装置１２を備え、てなる電解液充填装置を用い、
あらかじめ電解液を保持するための電解液含浸保持材１０が装填された電池ケース９内の該電解液含浸保持材１０に電解液を注入し含浸させるに際して、
該電解液含浸保持材１０が装填された電池ケース９を電解液充填装置のクランプ部材１１にセットし、該電池ケース９内を真空ポンプ１４によって真空状態にする工程と、
電解液圧送装置１２から電解液を前記電解液充填装置の電解液補助供給室２ａへ圧送し、さらに電解液補助供給室２ａ内の該加圧状態の電解液を第１アクチュエータ４を作動させて第１ニードル３をあらかじめ設定した時間だけ開くことにより該電解液補助供給室２ａから所定の１充填量を電解液充填装置の電解液主供給室２ｂ内へ供給し保持する工程と、
前記電解液主供給室２ｂ内に保持された１充填量の電解液を第２アクチュエータ６を作動させて第２ニードル５を開くことにより該吐出ノズル７を通して前記真空状態に維持された状態の電池ケース９内へ注入する工程と、
十分に電解液が電解液含浸保持材１０に注入含浸された電池ケース９をその真空状態を開放して電解液充填装置のクランプ部材１１から取り外して次工程へ送る工程と、を含む作業工程が１サイクルとして繰り返されるようにし、電解液を電池ケース９内の電解液含浸保持材１０に短時間に含浸させ、かつ電池ケース９内の真空圧に影響されることなく正確な充填量を充填することを特徴とする、乾電池の製造工程における電解液充填方法。 The gun body 2 includes an electrolyte auxiliary supply chamber 2a and an electrolyte main supply chamber 2b. The electrolyte auxiliary supply chamber 2a has communication between the electrolyte auxiliary supply chamber 2a and the electrolyte main supply chamber 2b. The first needle 3 that is on / off controlled and opened / closed by the first actuator 4 is provided, and the discharge port of the electrolyte main supply chamber 2b is controlled to be turned on / off in the electrolyte main supply chamber 2b. A discharge gun 1 for discharging an electrolyte comprising a second needle 5 that can be opened and closed by an actuator 6 and a discharge nozzle 7 connected to the discharge port of the electrolyte main supply chamber 2b, and a discharge gun 1 The discharge nozzle 7 is inserted in the lower portion of the battery, and a vacuum pump 14 for evacuating the inside of the battery case 9 is connected via a pipe, and includes a clamp member 11 that holds the battery case 9, and an electrolyte solution auxiliary Supply chamber 2a Including the electrolytic fluid delivery mechanism 12 connected by a pipe, the electrolytic solution filling apparatus used comprising Te,
In injecting and impregnating the electrolytic solution into the electrolytic solution impregnated holding material 10 in the battery case 9 loaded with the electrolytic solution impregnated holding material 10 for holding the electrolytic solution in advance .
Setting the battery case 9 loaded with the electrolyte impregnated holding material 10 to a clamp member 11 of an electrolyte filling device , and evacuating the battery case 9 with a vacuum pump 14 ;
The electrolyte solution from the electrolyte pumping device 12 is pumped into the electrolyte auxiliary supply chamber 2a of the electrolyte filling apparatus, and further an electrolytic solution of the pressurizing state of the electrolyte auxiliary supply chamber 2a actuates the first actuator 4 Supplying and holding a predetermined 1 filling amount from the electrolyte auxiliary supply chamber 2a into the electrolyte main supply chamber 2b of the electrolyte filling device by opening the first needle 3 for a preset time ;
Battery state where the maintained an electrolyte main supply chamber 1 loading of the electrolytic solution held in the 2b in the vacuum state through said discharge exit nozzle 7 by opening the second needle 5 actuates the second actuator 6 Injecting into the case 9 ;
And a step of releasing the vacuum state of the battery case 9 in which the electrolyte is sufficiently impregnated and impregnated in the electrolyte impregnated holding material 10 and removing the battery case 9 from the clamp member 11 of the electrolyte filling device and sending it to the next process. It is repeated as one cycle , and the electrolyte solution is impregnated in the electrolyte solution impregnated holding material 10 in the battery case 9 in a short time, and an accurate filling amount is filled without being affected by the vacuum pressure in the battery case 9. An electrolyte solution filling method in a manufacturing process of a dry battery.
JP2000126671A 2000-03-23 2000-03-23 Electrolyte filling method in manufacturing process of dry cell Expired - Fee Related JP4292444B2 (en)

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