JP2010282743A

JP2010282743A - Storage battery

Info

Publication number: JP2010282743A
Application number: JP2009132972A
Authority: JP
Inventors: Akio Seo; 秋夫瀬尾; Koji Watabe; 浩二渡部; Hisashi Ouchi; 久士大内; Shuichi Yabuki; 修一矢吹
Original assignee: Furukawa Battery Co Ltd
Current assignee: Furukawa Battery Co Ltd
Priority date: 2009-06-02
Filing date: 2009-06-02
Publication date: 2010-12-16
Anticipated expiration: 2029-06-02
Also published as: JP5396161B2; WO2010140408A1

Abstract

<P>PROBLEM TO BE SOLVED: To provide a storage battery with improved effect of liquid leakage prevention, in a case where the storage battery is turned upside down, by extending the time required until an electrolyte in each cell flowing from an exhaust tube into an independent exhaust passage reaches a gas exhaust port. <P>SOLUTION: In the storage battery allowing a gas from each cell in a battery case to be exhausted to an outside through a gas filter, a lid plate of a lid body is formed with a pair of first and second exhaust tubes 31, 32 in communication with respective cells in the battery case and exhaust passages 6a, 6b, ... surrounding each pair of the first and second exhaust tubes 31, 32 and being independent of one another, an annular barrier rib 33a surrounding the first and second exhaust tubes 31, 32 and having a notch 34 is provided in a protruding manner inside an inner passage 6a1 formed in a small chamber of each exhaust passage 6a, and an upper end of the second exhaust tube 32 faces inside a cup-shaped coating protruding downward from a back surface of an upper lid. In such a storage battery, a top surface of the lid plate of the lid body is provided with a screen 60 protruding between the notch 34 of the annular barrier rib 33a and the second exhaust tube 32. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、排気構造を具備した蓄電池に関する。 The present invention relates to a storage battery having an exhaust structure.

蓄電池が横転した際にセル室内の電解液が排気筒から排気通路を介し外部に流出することを防止した発明が特開昭57-14361号公報に開示されているが、この発明では、該蓄電池が倒立した場合には電解液の外部流出が防止できない不都合があることに鑑み、本願の発明者等は、この課題を解消した発明を出願し、特開2008-117582号公報、特開2008-117583号公報、特開2008-117584公報において開示した。 Japanese Patent Laid-Open No. 57-14361 discloses an invention that prevents the electrolytic solution in the cell chamber from flowing out of the exhaust tube through the exhaust passage when the storage battery rolls over. In view of the inconvenience that the electrolytic solution cannot be prevented from flowing out when the liquid crystal is inverted, the inventors of the present application filed an invention that solved this problem, and disclosed in Japanese Patent Application Laid-Open No. 2008-117582 and Japanese Patent Application Laid-Open No. 2008-2008. This is disclosed in Japanese Patent No. 117583 and Japanese Patent Laid-Open No. 2008-117584.

特開昭57-14361号公報JP 57-14361 特開2008-117582号公報JP 2008-117582 A 特開2008-117583号公報JP2008-117583 特開2008-117584号公報JP2008-117584

しかし乍ら、上記特許文献1〜4の排気構造を具備した蓄電池において、倒立した際に各セル室内の電解液が排気筒から夫々独立した各排気通路とその前方のガスフィルターを介し外部に漏出するまでの時間を遅くすることが望まれる。
本発明は、かかる要望を満足した蓄電池の倒立時から各セル室内の電解液がガスフィルターに達するまでの時間を遅くした排気通路を具備した蓄電池を提供することに在る。 However, in the storage battery having the exhaust structure described in Patent Documents 1 to 4, when the battery is inverted, the electrolyte in each cell chamber leaks to the outside through each exhaust passage independent of the exhaust tube and the gas filter in front of it. It is desirable to delay the time to do this.
It is an object of the present invention to provide a storage battery having an exhaust passage in which the time from when the storage battery is turned up to satisfying such a demand until the electrolyte in each cell chamber reaches the gas filter is delayed.

本発明は、請求項1に記載の通り、内部を仕切壁により区画された複数のセル室を有する電槽の上面に、その夫々のセル室に連通する夫々の排気筒と、相隣る排気筒間を隔離し且つ囲繞する囲繞隔壁により夫々独立した排気通路を形成すると共に、蓋板の上面にその各排気筒を囲繞し、且つ排気通路に連通開口する切欠口を有する環状隔壁を突設して成る蓋本体を気密に施し、更に、該蓋本体の夫々の排気通路の上面開口に上蓋を気密に施し、該上蓋の裏面に形成した囲繞隔壁を該蓋本体の囲繞隔壁に合体させて該囲繞隔壁により夫々独立した排気通路を該蓋本体の夫々独立した排気通路に対応させると共に、該上蓋の裏面から下垂突出する各コップ状被覆部を該蓋本体の該蓋板の上面に突設した環状隔壁に合体させ、前記の対応したこれら排気通路に共通の少なくとも1つのガスフィルターを介し一括排気せしめるガス排出口を設け、更に、各排気筒を第1排気筒と第2排気筒に分割形成すると共にその一方の第1排気筒の上端を該上蓋の裏面から下垂突出する各コップ状被覆部の空間内に臨ませる一方、他方の第2排気筒の上端開口面は該コップ状被覆部の空間内に臨まない高さ位置とし、隣接する該環状隔壁の該切欠口を介し排気通路に連通せしめて成る排気構造を具備した蓄電池において、該蓋本体の該蓋板の上面に該環状隔壁の該切欠口とこれに連通する該第2排気筒の上端開口面との間に衝立を突設したことを特徴とする蓄電池に存する。
更に本発明は、請求項2に記載の通り、該蓋本体の該蓋板に該第2排気筒に向かい下り坂の傾斜溝を設け、該傾斜溝を跨ぎ該衝立を設けたことを特徴とする蓄電池に存する。 According to the present invention, as described in claim 1, an upper surface of a battery case having a plurality of cell chambers, the interior of which is partitioned by a partition wall, each exhaust pipe communicating with each cell chamber, and adjacent exhaust pipes. Independent exhaust passages are formed by surrounding partition walls that isolate and surround the cylinders, and an annular partition wall is provided on the upper surface of the cover plate that surrounds each exhaust cylinder and has a notch opening that communicates with the exhaust passage. The lid body is formed in an airtight manner, and further, an upper lid is airtightly applied to the upper surface opening of each exhaust passage of the lid body, and the surrounding partition formed on the back surface of the upper lid is combined with the surrounding partition wall of the lid body. Independent exhaust passages by the surrounding partition walls correspond to the independent exhaust passages of the lid main body, and each cup-shaped covering portion projecting downward from the back surface of the upper lid projects from the upper surface of the lid plate of the lid main body. The above-mentioned corresponding discharge is combined with the annular partition wall. A gas exhaust port is provided for exhausting all at once through a common gas filter in the air passage, and each exhaust pipe is divided into a first exhaust pipe and a second exhaust pipe, and the upper end of one of the first exhaust pipes is formed. In the space of each cup-shaped covering portion projecting downward from the back surface of the upper lid, while the upper end opening surface of the other second exhaust pipe is positioned so as not to face the space of the cup-shaped covering portion, and adjacent In the storage battery having an exhaust structure that is in communication with the exhaust passage through the cutout opening of the annular partition wall, the second opening that communicates with the cutout opening of the annular partition wall on the upper surface of the lid plate of the lid body. The storage battery is characterized in that a partition is provided between the upper end opening surface of the exhaust tube.
Furthermore, the present invention is characterized in that, as described in claim 2, the lid plate of the lid body is provided with an inclined groove on the down slope toward the second exhaust pipe, and the partition is provided across the inclined groove. Lies in storage batteries.

請求項1に係る発明によれば、該蓄電池が倒立したとき、各セル室から電解液が該第2排気筒、その外周の該環状隔壁の切欠口を介し上向きになった該上蓋に形成された排気通路内に流出する過程で、該ついたてによりその流出が妨げられるので、流出した電解液がガスフィルターに達するまでの時間を、後記に明らかにするように、衝立のない従来の蓄電池に比し、遅延することができ、著しい漏出防止効果の向上をもたらす。
請求項2に係る発明によれば、倒立した該蓄電池を正立状態に戻したとき、各排気通路内に流出した電解液は、該衝立の下方の該傾斜溝を介し各セル室へ全て還流する時間を短縮することができる。 According to the invention of claim 1, when the storage battery is inverted, the electrolytic solution is formed from each cell chamber on the upper lid that faces upward through the second exhaust tube and the cutout of the annular partition wall on the outer periphery thereof. In the process of flowing out into the exhaust passage, the outflow is hindered by the screen, so that the time until the outflowing electrolyte reaches the gas filter is compared with that of a conventional storage battery without screens, as will be clarified later. Can be delayed, resulting in a significant improvement in leakage prevention effect.
According to the invention of claim 2, when the inverted storage battery is returned to the upright state, the electrolyte flowing into each exhaust passage is all returned to each cell chamber via the inclined groove below the partition. Time can be shortened.

本発明実施の1例の蓄電池の蓋本体の上面図。1 is a top view of a lid body of an example storage battery according to the present invention. FIG. 同蓋本体の上面に施される上蓋の裏面図。The back view of the upper cover given to the upper surface of the cover main body. 該上蓋の上面図。The top view of this upper cover. 電槽の上面に蓋本体と上蓋とを順次施して組み立てた蓄電池の一部を截除した上面図。The upper side figure which removed the part of the storage battery assembled by giving a lid main body and an upper lid to the upper surface of a battery case one by one. 図4のA-A線で截断した蓄電池の側面図。FIG. 5 is a side view of the storage battery cut along line AA in FIG. 蓄電池の要部の拡大上面図。The enlarged top view of the principal part of a storage battery. 図6のB-B線裁断面図。FIG. 7 is a sectional view taken along line B-B in FIG. 6. 図6のC-C線裁断面図。FIG. 7 is a sectional view taken along line C-C in FIG. 6.

本発明の実施の形態の1例を添付図面につき説明する。
図1は、合成樹脂成形体から成る方形箱形の蓋本体の上面図を示す。参照符号1で示す該蓋本体の蓋板1aの上面の一部を、該蓋本体1が施される電槽の内部を仕切壁により区画形成されセル室の数に相当する数の、図示の例では、6個のセル室に跨る面域を底面とする長方形の凹面1a1に成形し、その凹面の空間内に、次のような排気構造を構成する。即ち、その長方形の凹面1a1空間内に、その四周内側壁面に沿い、且つその凹面1a1空間の底面、即ち、該本体1の該蓋板1aの上面から所望の高さの方形の四周囲枠2を突設する。その高さは、その上端が図示の例では、該凹面1a1空間の左右に形成した後述する筒状のガス排出口を嵌装するための凹溝1b,1bの底面と同じ或いはそれより高い高さとした。更に、該蓋板1aの上面に、該四周囲枠2で囲繞される凹面1a1空間内に、該電槽の内部を区画形成された6個のセル室に対応する位置で、該蓋板1aに、各セル室に連通する排気孔3a及び注液口4を穿設し、その夫々の外周に、該底面から突出する排気筒3及び注液筒4aの一組ずつを配設する。該蓋板1a上面からの各排気筒3は、該四周囲枠2の高さよりも高い適当な高さに突設せしめ、各注液筒4aは、該四周囲枠2の高さと同じ高さに突設せしめた。
更に、該四周囲枠2内には、下記するように6つの夫々独立した排気通路を形成した。即ち、該四周囲枠2内に、各相隣る排気筒3,3間を隔離すると共に各排気筒3を囲繞する隔壁5a,5a,…を該四周囲枠2と同じ高さに突設し、6個の排気筒3,3,…の夫々が互いに連通することなく独立した6個の排気通路6a,6a,…を区画形成した。更に、各独立した排気通路6a内に、各独立した注液筒4aの側面から該排気筒3の側方を横切り、該四周囲枠2の一方の長辺側枠2aの近傍まで延び、且つ該四周囲枠2と同じ高さの隔壁7aを突設し、これにより、各該排気通路6aを該排気筒3側に、これを囲繞する小室に形成された内側通路6a1と該隔壁7aと該長辺側枠2aの内側面との間に存せしめた間隙8aを介して該内側通路6a1と連通する外側通路6a2とに区分した。更に、その小室に形成された内側通路6a1内に、該長辺側枠2aの内側面から該排気筒3と該隔壁7aとの間に延び且つ該四周囲枠2と同じ高さの隔壁9aを突設し、これにより、電槽内の各セル室から該排気筒3を介し内側通路6a1に進入したガスが、直接、該間隙8aから該外側通路6a2へ排出されることが妨げられ、該隔壁9aと該隔壁7aとの間に形成された通路6a3を通過した後、該間隙8aから該外側通路6a2に排出せしめるように、その通過距離を延長して、電解液ミストの捕集効果を高めるようにした。尚また、該隔壁7aの外側面から側面に該外側通路6a2内へ突設して、該隔壁7aと同じ高さの防沫壁10aを突設した。該防沫壁10aは、外側通路6a2内に突出するようにその複数枚を配設してもよい。
図面で、11は該蓋本体1が施される電槽の仕切壁に対応して該蓋本体1の裏面から下垂突出させた仕切壁、12は正極端子、13は負極端子、14は比重液面表示栓を示す。 An example of an embodiment of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a top view of a rectangular box-shaped lid body made of a synthetic resin molding. A part of the upper surface of the lid plate 1a of the lid body indicated by reference numeral 1 is formed in a number corresponding to the number of cell chambers formed by partitioning the interior of the battery case in which the lid body 1 is provided by a partition wall. In the example, a rectangular concave surface 1a1 whose bottom surface is a surface area extending over six cell chambers is formed, and the following exhaust structure is configured in the space of the concave surface. That is, in the rectangular concave surface 1a1 space, along the inner wall of the four circumferences, and the bottom surface of the concave surface 1a1 space, that is, a square four-perimeter frame 2 having a desired height from the upper surface of the lid plate 1a of the main body 1. To project. In the example shown in the drawing, the height of the top is the same as or higher than the bottom of the concave grooves 1b and 1b for fitting cylindrical gas discharge ports to be described later formed on the left and right sides of the concave surface 1a1 space. Say it. Further, on the upper surface of the lid plate 1a, in the concave surface 1a1 space surrounded by the four peripheral frames 2, the lid plate 1a is located at a position corresponding to the six cell chambers defined inside the battery case. Further, an exhaust hole 3a and a liquid injection port 4 communicating with each cell chamber are formed, and one set of the exhaust cylinder 3 and the liquid injection cylinder 4a protruding from the bottom surface is provided on the outer periphery of each. Each exhaust cylinder 3 from the upper surface of the cover plate 1a is protruded to an appropriate height higher than the height of the four peripheral frames 2, and each liquid injection cylinder 4a has the same height as the height of the four peripheral frames 2. I made it project.
Further, six independent exhaust passages were formed in the four peripheral frames 2 as described below. That is, the four surrounding frames 2 are provided with partition walls 5a, 5a,... Projecting at the same height as the four surrounding frames 2 so as to isolate the adjacent exhaust tubes 3 and 3 from each other and surround each exhaust tube 3. Then, the six exhaust cylinders 3, 3,... Are partitioned into six independent exhaust passages 6a, 6a,. Further, in each independent exhaust passage 6a, it crosses the side of the exhaust cylinder 3 from the side surface of each independent liquid injection cylinder 4a, extends to the vicinity of one long side frame 2a of the four peripheral frame 2, and A partition wall 7a having the same height as that of the four peripheral frames 2 is provided so that each of the exhaust passages 6a is formed on the exhaust tube 3 side, and an inner passage 6a1 formed in a small chamber surrounding the exhaust passage 6a and the partition wall 7a. The outer side passage 6a2 communicated with the inner passage 6a1 through a gap 8a existing between the inner side surface of the long side frame 2a. Further, in the inner passage 6a1 formed in the small chamber, a partition wall 9a extending between the exhaust tube 3 and the partition wall 7a from the inner surface of the long side frame 2a and having the same height as the four peripheral frames 2 Thus, the gas that has entered the inner passage 6a1 from each cell chamber in the battery case via the exhaust tube 3 is prevented from being directly discharged from the gap 8a to the outer passage 6a2. After passing through the passage 6a3 formed between the partition wall 9a and the partition wall 7a, the passage distance is extended so as to be discharged from the gap 8a to the outer passage 6a2, thereby collecting the electrolyte mist. I tried to increase. Further, a splash-proof wall 10a having the same height as the partition wall 7a was projected from the outer surface to the side surface of the partition wall 7a so as to project into the outer passage 6a2. A plurality of the splash-proof walls 10a may be disposed so as to protrude into the outer passage 6a2.
In the drawing, 11 is a partition wall projecting downward from the back surface of the lid body 1 corresponding to the partition wall of the battery case to which the lid body 1 is applied, 12 is a positive terminal, 13 is a negative terminal, and 14 is a specific gravity liquid A surface indicator plug is shown.

図2は、上記の蓋本体1の該四周囲枠2の上面に当接して施されるに適した大きさ、形状を有する合成樹脂成形による上蓋20の裏面図、図3は、該上蓋20の上面図を示す。該上蓋20は、実施例では、裏側に凹面空間を形成した箱形とした。
該上蓋20は、蓋板20aとその四周縁から所望高さ下向きに延びる四周側壁20bとから成り、その四周側壁20bの下端は、該上蓋20を該蓋本体1の該四周囲枠2に施されるとき、該四周囲枠2とその外側の該凹面1a1の四周内面との間の空隙に挿入される外側壁20b1と、該四周囲枠2の上端に当接する内側の四周側壁20b2とから成る嵌合係止用段差を有する下端に形成されている。かくして、該上蓋20は、該蓋本体1の該四周囲枠2の上端部に当接係合し、熱融着、接着により互いに結着されるようにした。該蓋板20aには、該蓋本体1上に載せたときに、該蓋本体1の夫々の注液筒4a,4a,…に対応する位置に6個の注液口が穿設されており、更に、該上蓋の裏面の凹面1a1空間内に、蓋本体1の裏面に設けた6つの夫々独立した排気通路6a,6a,…に対応する夫々独立した排気通路を下記のように形成した。
即ち、更に詳細には、その蓋板20aの裏面には、該蓋本体1の該四周囲枠2内に配設した6つの注液口4,4,…と注液筒4a,4a,…に対応する位置に、6つの注液口4,4,…とその外周縁に6つの注液筒4b,4b,…を該四周側壁20b1と同じ高さに突出せしめて配設し、更に、該蓋本体1の該四周囲枠2内で該蓋板1aの上面から突出せしめた囲繞隔壁5a,5a,…に対応する位置に囲繞隔壁5b,5b,…を該四周側壁20b2と同じ高さに突出せしめて配設し、これにより、該蓋本体1に形成された夫々独立した排気通路6a,6a,…に対応する夫々独立した排気通路6b,6b,…が形成されるようにした。更に、該蓋本体1に配設した該隔壁7aに対応する位置に隔壁7b、該隔壁9aに対応する位置に隔壁9b及び該隔壁7aの側面に付設した防沫壁10aに対応する位置に防沫壁10bを夫々その蓋板20aの裏面から該四周側壁20b2と同じ高さに突出して配設し、これにより、蓋本体1に形成された間隙8a、小室に形成された内側通路6a1及び外側通路6a2に対応する位置に、間隙8b、小室に形成された内側通路6b1及び外側通路6b2を夫々形成せしめた。 FIG. 2 is a rear view of the upper lid 20 made of a synthetic resin having a size and shape suitable for being applied in contact with the upper surface of the four peripheral frames 2 of the lid body 1, and FIG. The top view of is shown. In the embodiment, the upper lid 20 has a box shape with a concave space formed on the back side.
The upper lid 20 includes a lid plate 20a and a four-circumferential side wall 20b extending downward from the four peripheral edges to a desired height, and the lower end of the four-circumferential side wall 20b applies the upper lid 20 to the four peripheral frames 2 of the lid main body 1. The outer wall 20b1 inserted into the gap between the four peripheral frame 2 and the outer peripheral surface of the concave surface 1a1, and the inner peripheral wall 20b2 in contact with the upper end of the four peripheral frame 2. It forms in the lower end which has the level | step difference for fitting latching which consists. Thus, the upper lid 20 is brought into contact with and engaged with the upper end of the four peripheral frame 2 of the lid main body 1 and is bonded to each other by heat fusion and adhesion. The lid plate 20a has six liquid injection holes formed at positions corresponding to the liquid injection cylinders 4a, 4a,... Of the lid main body 1 when placed on the lid main body 1. Further, independent exhaust passages corresponding to six independent exhaust passages 6a, 6a,... Provided on the back surface of the lid body 1 were formed in the concave surface 1a1 space on the back surface of the upper lid as follows.
More specifically, on the back surface of the lid plate 20a, there are six liquid injection ports 4, 4,... And liquid injection cylinders 4a, 4a,. Are arranged at the same height as the four peripheral side walls 20b1, and six liquid injection ports 4b, 4b,... The surrounding partition walls 5b, 5b,... Are flush with the surrounding wall 20b2 at positions corresponding to the surrounding partition walls 5a, 5a,... Projected from the upper surface of the lid plate 1a within the four peripheral frames 2 of the lid body 1. In this way, independent exhaust passages 6b, 6b, ... corresponding to the independent exhaust passages 6a, 6a, ... formed in the lid body 1 are formed. Further, the partition wall 7b is disposed at a position corresponding to the partition wall 7a disposed on the lid body 1, the partition wall 9b is disposed at a position corresponding to the partition wall 9a, and the position corresponding to the splash-proof wall 10a attached to the side surface of the partition wall 7a. Each of the spray walls 10b is disposed so as to protrude from the back surface of the lid plate 20a to the same height as the four-side wall 20b2, so that the gap 8a formed in the lid body 1, the inner passage 6a1 formed in the small chamber, and the outer side A gap 8b and an inner passage 6b1 and an outer passage 6b2 formed in the small chamber were formed at positions corresponding to the passage 6a2.

尚、図示の例では、蓋本体1に形成した上記6本の排気通路6a,6a,…及び該上蓋20に形成した上記6本の排気通路6b,6b…は、図1及び図2に明らかなように、その夫々の左半部と右半部が左右対象となるように中央の囲繞隔壁5a,5aにより分割構成され、該蓋本体1の上面に該上蓋20を重合結着したとき、図面で、該蓋本体1の左側の3つの夫々独立した排気通路6a,6a,6aと該上蓋20の左側の3つの夫々独立した排気通路6b,6b,6bとは、上下方向で連通して排気通路6,6,6が形成されると共に、これら排気通路6,6,6は、上蓋20側の左側方の該四周側壁20bの左側のコーナー部内に設けた防爆用のガスフィルター21に連通するようにする一方、図面で、該蓋本体1の右側の3つの夫々独立した排気通路6a,6a,6aと該上蓋20の右側の3つの夫々独立した排気通路6b,6b,6bとは、上下方向で連通して排気通路6,6,6が形成されると共に、これら排気通路6,6,6は、上蓋20側の右側方の該四周側壁20bの右側のコーナー部内に設けた防爆用のガスフィルター21に連通するようにした。 In the illustrated example, the six exhaust passages 6a, 6a,... Formed in the lid body 1 and the six exhaust passages 6b, 6b formed in the upper lid 20 are clearly shown in FIGS. As shown, the left half and the right half of each of the left and right halves are divided by the central surrounding partition walls 5a and 5a so that the left and right objects are left and right, and when the upper lid 20 is superposed on the upper surface of the lid body 1, In the drawing, the three independent exhaust passages 6a, 6a, 6a on the left side of the lid body 1 and the three independent exhaust passages 6b, 6b, 6b on the left side of the upper lid 20 are communicated in the vertical direction. Exhaust passages 6, 6, 6 are formed, and these exhaust passages 6, 6, 6 communicate with an explosion-proof gas filter 21 provided in the left corner of the four-side wall 20b on the left side on the upper lid 20 side. On the other hand, in the drawing, the three independent exhaust passages 6a, 6a, 6a on the right side of the lid body 1 and the three independent exhaust passages 6b, 6b, 6b on the right side of the upper lid 20 are Communicate vertically The exhaust passages 6, 6, 6 are formed, and the exhaust passages 6, 6, 6 are formed in the right corner of the four-side wall 20b on the right side on the upper lid 20 side, and an explosion-proof gas filter 21 is provided. To communicate with.

更に詳細には、図2に示すように、上蓋20側の3つの夫々独立した排気通路6b,6b,6bは、該四周側壁20bの左側のコーナー部内まで延び、右側の3つの夫々独立した排気通路6b,6b,6bは、該四周側壁20bの右側のコーナー部内まで延び、左右の夫々のコーナー部内には、左右の夫々の3つの排気通路6b,6b,6b及び6b,6b,6bを区画する隔壁5b,5b,5b及び5b,5b,5bの上端と同じレベル位置、或いはそれより低い位置、即ち、該上蓋20の該蓋板20aに近くなる側の位置に、これらの隔壁の外側端面に圧入又は接着するなどの任意の手段で防爆用のガスフィルター21が装着されたガスフィルター装着筒22,22を夫々固設し、その夫々のフィルター装着筒22,22の側方に位置してこれら装着筒22,22内と連通するガス排出口23,23を設ける。図示の例では、筒状ガス排気口23,23とし、その内端をこれらフィルター装着筒22,22内と連通開口せしめた。夫々の筒状ガス排気口23,23は、例えば、断面が中空矩形状の筒とし、該四周側壁20bの左右の短い側の側壁に設けた孔を気液密に貫通して固設せしめたものであり、かくして、該上蓋20を該蓋本体1の上面に施したとき、該左右のフィルター装着筒22,22は、左右の夫々3つの排気通路の外端の上面開口が集合している該蓋本体1の該四周囲枠2の左右のコーナー部内の空間部2c,2cの上方の円形の仮想線で示す位置に来ると同時に、該左右のガス排出口23,23は、該蓋本体1の上面の左右の前記した嵌合凹溝1b,1bに位置するようにした。 More specifically, as shown in FIG. 2, the three independent exhaust passages 6b, 6b, 6b on the upper lid 20 side extend into the left corner of the four-side wall 20b, and the three independent exhaust passages on the right side. The passages 6b, 6b, 6b extend to the right corner of the four-side wall 20b, and the left and right corners are divided into three exhaust passages 6b, 6b, 6b and 6b, 6b, 6b. The partition walls 5b, 5b, 5b and 5b, 5b, 5b are at the same level as the upper ends of the partition walls 5b, 5b, 5b, or lower, that is, on the side closer to the cover plate 20a of the upper cover 20, the outer end surfaces of these partitions. The gas filter mounting cylinders 22 and 22 to which the gas filter 21 for explosion prevention is mounted are fixed by any means such as press-fitting or bonding to each other, and are located on the sides of the respective filter mounting cylinders 22 and 22. Gas discharge ports 23, 23 communicating with the inside of the mounting cylinders 22, 22 are provided. In the illustrated example, cylindrical gas exhaust ports 23 and 23 are provided, and the inner ends thereof are opened to communicate with the filter mounting cylinders 22 and 22, respectively. Each of the cylindrical gas exhaust ports 23 and 23 is, for example, a cylinder having a hollow rectangular cross section, and the holes provided in the left and right short side walls of the four-side wall 20b are gas-liquid tightly penetrated and fixed. Thus, when the upper lid 20 is applied to the upper surface of the lid body 1, the left and right filter mounting cylinders 22 and 22 have upper surface openings at the outer ends of the left and right exhaust passages, respectively. The left and right gas exhaust ports 23 and 23 are located at the positions indicated by the circular phantom lines above the space portions 2c and 2c in the left and right corner portions of the four peripheral frames 2 of the lid body 1 and the lid body 1 1 is located in the above-described fitting grooves 1b and 1b on the left and right of the upper surface of 1.

而して、鉛蓄電池に組み立てるには、常法により、図4及び図5に示す電槽40の上面開口部を閉塞するべく、該蓋本体1の四周側壁1cの下端とその裏面各仕切壁11,11,…を対応する電槽40の四周側壁40aと該電槽40内を6個のセル室40bに仕切る各仕切壁40cに熱融着、接着などで固着し、その蓋本体1の上面に、該上蓋20を施し、該蓋本体1の該四周囲枠2の上面に該上蓋20の該四周囲枠2bを嵌着し、互いに熱融着、接着などで気液密に結着し、これにより、該上蓋20の該四周側壁20bと該蓋本体1の該四周囲枠2との合体により、夫々対向する囲繞隔壁5a,5a,…と5b,5b,…の合体した囲繞隔壁により、夫々の排気筒3,3,…を囲んだ夫々独立した該蓋本体1側の排気通路6a,6a,…と該上蓋20側の排気通路6b,6b,…が上下方向で連通した6本の夫々独立した排気通路6,6,…が得られ、更に、各排気通路6,6,…内において、隔壁7a,7bが合体した隔壁、隔壁9a,9aが合体した隔壁、該防沫壁10a,10bが合体した防沫壁が得られ、これにより、上下方向に連通する小室に形成された内側通路、外側通路及び間隙が夫々形成された鉛蓄電池が得られる。而して、該蓄電池の上蓋20の各注液口4,4より電解液を注入し、各セル室40b,40b,…内に夫々収容されている極板群(図示しない)を浸漬した遊離電解液を保有せしめ、夫々の注液口4に密封栓(図示しない)を施し、鉛蓄電池を構成する。 Thus, in order to assemble the lead-acid battery, in order to close the upper surface opening of the battery case 40 shown in FIGS. 11, 11,... Are fixed to the four peripheral side walls 40 a of the corresponding battery case 40 and the partition walls 40 c partitioning the inside of the battery case 40 into six cell chambers 40 b by heat fusion, adhesion, etc. The upper lid 20 is provided on the upper surface, and the four peripheral frames 2b of the upper lid 20 are fitted on the upper surface of the four peripheral frames 2 of the lid body 1, and are bonded to each other in a gas-liquid tight manner by heat fusion, adhesion, or the like. Thus, the surrounding partition walls 5a, 5a,..., 5b, 5b,... Are combined by the combination of the four peripheral side walls 20b of the upper lid 20 and the four peripheral frames 2 of the lid body 1. , And the independent exhaust passages 6a, 6a,... On the lid body 1 side surrounding the respective exhaust cylinders 3, 3,... And the exhaust passages 6b, 6b,. Each of the books has independent exhaust passages 6, 6,. In each exhaust passage 6,6, ..., a partition wall in which the partition walls 7a, 7b are combined, a partition wall in which the partition walls 9a, 9a are combined, and a splash-proof wall in which the splash-proof walls 10a, 10b are combined are obtained. A lead storage battery in which an inner passage, an outer passage, and a gap formed in a small chamber communicating with each other in the vertical direction are obtained. Thus, the electrolytic solution is injected from the liquid injection ports 4 and 4 of the upper lid 20 of the storage battery, and the electrode plates (not shown) accommodated in the cell chambers 40b, 40b,. The electrolyte solution is held, and a sealing plug (not shown) is applied to each liquid injection port 4 to constitute a lead storage battery.

上記の鉛蓄電池の充電時又は過充電時に電槽の各セル室に発生したガスは、夫々対応する排気筒3,3,…を介し、その夫々の排気通路6,6,…に進入し、次いで、左側と右側の夫々3本ずつの独立した排気通路6,6,6からのガスは、その前方の空間部2c,2cに至り、次いで、その上方に配設した左右のガスフィルター21,21を介し左右のガス排出口23,23から外部に夫々一括排気される。 The gas generated in each cell chamber of the battery case at the time of charging or overcharging of the lead storage battery enters the respective exhaust passages 6, 6, ... through the corresponding exhaust pipes 3, 3, ... Next, the gas from each of the three independent exhaust passages 6, 6, 6 on the left side and the right side reaches the front space portions 2c, 2c, and then the left and right gas filters 21, The gas is exhausted from the left and right gas outlets 23 and 23 to the outside through the gas outlet 21 and the gas outlet 23, respectively.

かくして、その夫々の独立した排気用通路6,6,…をガスが通過する間に、上記の種々の隔壁や防沫壁などに衝突するので、ガス中の電解液ミストは捕捉され、ガスのみが外部に排出されるので、排気中の液漏れが防止される。一方、捕集した電解液は、相互に交じり合うことがない。尚、夫々の独立した排気通路6,6,…内に捕捉された電解液を流下し、夫々の排気筒3,3,…を介して夫々セル室に還流させるには、該蓋本体1の蓋板1aの上面に相当する各独立した排気通路6,6,…の底面を、各該排気通路6の外端側から該排気孔3aに至るに従い下り坂の傾斜底面とすることが好ましい。 Thus, while the gas passes through each of the independent exhaust passages 6, 6,..., It collides with the various partition walls and splash-proof walls, so that the electrolyte mist in the gas is captured and only the gas is captured. Is discharged to the outside, so that liquid leakage in the exhaust is prevented. On the other hand, the collected electrolytes do not mix with each other. In order to flow down the electrolytic solution trapped in each of the independent exhaust passages 6, 6,... And return them to the cell chambers through the respective exhaust cylinders 3, 3,. It is preferable that the bottom surfaces of the independent exhaust passages 6, 6,... Corresponding to the upper surface of the lid plate 1a are inclined down slopes from the outer end side of the exhaust passages 6 to the exhaust holes 3a.

更に、本発明によれば、上記に例示した蓄電池の排気構造において、蓄電池が倒立した場合でも、液漏れが防止されるように下記のように構成した。
即ち、該蓋本体1の該蓋板1aに電槽40の各セル室40bに連通する該排気筒3を、2つの排気筒31,32に構成した。図1、図6〜図8に示す例では、1つの排気筒の排気孔3aを隔壁pにより2分してコンパクトな2つの排気筒31,32に構成した。更に、これら2つの排気筒31,32の一方の第1排気筒31は該蓋板1aの上面からの上方に、即ち、排気通路6a側に延びる長さ、即ち、高さを、その他方の第2排気筒32の長さ、即ち、高さより高くする一方、該第1排気筒31の該蓋板1aの下面から下方に、即ち、セル室40b側に延びる長さを、第2排気筒32の長さより短く構成した。
また、該第1排気筒31の排気孔31aは、排気通路6aに開口する上部側をセル室40b側に開口する下部側より小径とし、該第2排気筒32の排気孔32aは、セル室40b側から排気通路6a側に向かうに従い口径が漸次大径とする逆テーパー状とした。
更に、該隔壁pを含めてこれら第1及び第2排気筒31,32の上端面は傾斜面に形成した。この場合、該第2排気筒32の傾斜排気孔32aの上端開口面32a1の下端は、蓋板1aの上面と同じつら位置とし開口するようにし、排気通路6から流下してくる捕捉された電解液を該第2排気筒32の排気孔32aを介しセル室内へ還流し得るようにした。 Furthermore, according to the present invention, the storage battery exhaust structure exemplified above is configured as follows so that liquid leakage is prevented even when the storage battery is inverted.
That is, the exhaust cylinder 3 communicating with each cell chamber 40b of the battery case 40 to the lid plate 1a of the lid body 1 is configured as two exhaust cylinders 31 and 32. In the example shown in FIG. 1 and FIGS. 6 to 8, the exhaust holes 3a of one exhaust cylinder are divided into two by the partition wall p to form two compact exhaust cylinders 31 and 32. Furthermore, one of the two exhaust cylinders 31 and 32 has a length extending from the upper surface of the cover plate 1a, that is, the length extending toward the exhaust passage 6a, that is, the height, and the other one. While the length of the second exhaust cylinder 32, that is, higher than the height, the second exhaust cylinder has a length extending downward from the lower surface of the cover plate 1a of the first exhaust cylinder 31, that is, to the cell chamber 40b side. Configured shorter than 32 lengths.
Further, the exhaust hole 31a of the first exhaust cylinder 31 has a smaller diameter at the upper side opening to the exhaust passage 6a than the lower side opening to the cell chamber 40b side, and the exhaust hole 32a of the second exhaust cylinder 32 is formed from the cell chamber A reverse taper is formed such that the diameter gradually increases from the 40b side toward the exhaust passage 6a side.
Further, the upper end surfaces of the first and second exhaust cylinders 31 and 32 including the partition wall p are formed as inclined surfaces. In this case, the lower end of the upper end opening surface 32a1 of the inclined exhaust hole 32a of the second exhaust cylinder 32 is opened at the same position as the upper surface of the lid plate 1a, and the trapped electrolysis flowing down from the exhaust passage 6 The liquid can be refluxed into the cell chamber through the exhaust hole 32a of the second exhaust cylinder 32.

更に、該蓋本体1の各排気通路6a内に、これら第1,第2排気筒31,32の外周に、環状空間S₁を存して、該蓋板1aの上面から突出して環状隔壁33aを設けると共に、該環状隔壁33aの一部に設けた上方に開口する切欠口34を介して該環状空間S₁とその外側の内側通路6a1と連通せしめる一方、該環状空間S₁を介し形成し、該切欠口34を該第1及び第2排気筒31,32の該排気孔31a,32aと環状空間S₁を存し、連通するようにした。尚、該切欠口34は、該第2排気筒の該排気孔32aと対面する位置に設けた。 Further, in the exhaust passage 6a of the lid body 1, these first, on the outer periphery of the second exhaust pipe 31, and presence of the annular space S _1, the annular partition wall 33a and projects from the upper surface of the lid plate 1a the provided with, while allowed to communicate with the inner passage 6a1 of the outer annular space S ₁ through the notch port 34 opening upward formed in a portion of the annular partition wall 33a, is formed through the annular space S ₁ the notch opening 34 resides exhaust pores 31a of the first and second exhaust pipe 31, and 32a and the annular space S _1, and to be communicated. The cutout 34 is provided at a position facing the exhaust hole 32a of the second exhaust cylinder.

一方、該上蓋20には、図2に示すように、その裏面の夫々独立した排気用通路6b,6b,…内に、該蓋本体1に配設した上記の夫々の環状隔壁33a,33a,…に対向する位置に、各該環状隔壁33aと同じ大きさ、形状の環状隔壁33b,33b,…を該上蓋20の裏面から突設した。 On the other hand, as shown in FIG. 2, the upper lid 20 is provided with the respective annular partition walls 33a, 33a, 33a, 33a, etc. disposed in the lid body 1 in independent exhaust passages 6b, 6b,. Are projected from the back surface of the upper lid 20 at positions opposite to the annular partition walls 33a. The annular partition walls 33b, 33b,.

而して、該蓋本体1の四周囲枠2の長辺側枠2aから内側へ延びて配設した夫々の隔壁9a,9a,…は、その夫々の内端が対応する夫々の該環状隔壁33a,33a,…の外周側面に合体するものに形成する一方、該上蓋20の裏面にも同様に、その四周側壁20bの長辺側壁20b1から内側に延びて配設した夫々の隔壁9b,9b,…は、その夫々の内端が対応する夫々の該環状隔壁33b,33b,…の外周側面に合体するものに形成する。
かくして、各排気通路6aの各小室に形成された内側通路6a1は、該環状隔壁33aをめぐる迂回通路に形成される。而して、図1、図5に明示のように、夫々の環状隔壁33a,33a,…の該切欠口34,34,…を該長辺側壁2a,2a,…に向けて配設したときは、これら排気筒31,32から排出されるガスは、その長辺側壁2a,2aに衝突後、夫々の環状隔壁33a,33a,…の周側壁に沿い迂回した後、夫々の外側通路6a2,6a2,…に進入するようになるので、ミストの捕集性能を更に向上せしめることができるようにした。 Thus, the respective partition walls 9a, 9a,... Arranged inwardly extending from the long side frame 2a of the four peripheral frames 2 of the lid body 1 are respectively the annular partition walls corresponding to the respective inner ends thereof. Each of the partition walls 9b, 9b is formed so as to be combined with the outer peripheral side surfaces of 33a, 33a,... ,... Are formed so as to be combined with the outer peripheral side surfaces of the respective annular partition walls 33b, 33b,.
Thus, the inner passages 6a1 formed in the small chambers of the exhaust passages 6a are formed as bypass passages around the annular partition wall 33a. 1 and FIG. 5, when the notches 34, 34,... Of the respective annular partition walls 33a, 33a,... Are arranged toward the long side walls 2a, 2a,. The gas discharged from the exhaust pipes 31 and 32, after colliding with the long side walls 2a and 2a, detours along the peripheral side walls of the respective annular partition walls 33a, 33a,. Since it enters 6a2, ..., the mist collection performance can be further improved.

かくして、該蓋本体1の上面に該上蓋20を気密に施したとき、図7,図8に明示するように、該上蓋2の裏面から下垂する該環状隔壁33bの下端は、該蓋本体1の上面から上方に延びる該環状隔壁33aの上端に当接し、相互に融着、接着などにより結着するが、この当接状態において、該上蓋20の蓋板20aとその裏面から下垂する環状隔壁33bとで形成される断面コ字状のコップ状被覆部35で、該第1,第2排気筒31,32の上方に空隙S₂を存してコップ空間S₃とその下方に環状空間S₁を存した状態で、これら第1,第2排気筒31,32の上部を被覆するようにすると共に、該第1排気筒31の上部の高さは、該コップ状被覆部35内に臨ませる一方、該第2排気筒32の上端開口面は、該コップ状被覆部35の空間内に臨まない高さ位置とし、隣接する該環状隔壁34を介し排気通路に連通せしめるようにした。
また、該蓋本体1の蓋板1aから上面に突設した環状隔壁33aの高さ、従って、該環状隔壁33aに上端を開口して切り欠いた矩形状などの切欠口34の上面開口端34aの高さは、該第1排気筒31の該排気孔31aの上端31a1の傾斜開口面の下端と同じ高さ或いはそれより低い位置に設定した。 Thus, when the upper lid 20 is airtightly applied to the upper surface of the lid body 1, as clearly shown in FIGS. 7 and 8, the lower end of the annular partition wall 33b hanging from the back surface of the upper lid 2 is the lid body 1 The upper surface of the annular partition wall 33a that extends upward from the upper surface of the upper partition wall 20a is bonded to each other by fusion, adhesion, or the like. In this contact state, the upper partition wall 20a and the annular partition wall that hangs down from the back surface in a U-shaped cup-like covering portion 35 formed by the 33b, first, the annular space S between the cup space S ₃ to exist a gap S ₂ above the second exhaust pipe 31, 32 in its lower ₁ is provided so that the upper parts of the first and second exhaust pipes 31 and 32 are covered, and the height of the upper part of the first exhaust pipe 31 faces the cup-shaped covering part 35. On the other hand, the upper end opening surface of the second exhaust cylinder 32 is positioned so as not to reach the space of the cup-shaped covering portion 35, and communicates with the exhaust passage through the adjacent annular partition wall 34. It was to so.
Further, the height of the annular partition wall 33a projecting on the upper surface from the lid plate 1a of the lid body 1, and accordingly, the upper surface opening end 34a of the notch 34 such as a rectangular shape with the upper end opened to the annular partition wall 33a. Was set at the same height as the lower end of the inclined opening surface of the upper end 31a1 of the exhaust hole 31a of the first exhaust cylinder 31 or a position lower than that.

上記の排気構造を備えた蓄電池が逆さになったときは、セル室40b内の電解液は、上下反転した該第1排気筒31の排気孔31a及び第2排気筒32の排気孔32aによる気液置換により排気通路6a1内へ進入するも、その進入した電解液はコップ空間S₃内に溜まり、やがて、第1排気筒31の上端開口を閉塞する。すると、両排気筒31,32を介しての気液置換が行われず、所謂エアロックを生じ、これにより、これ以上の電解液の流出がない液漏れ防止効果をもたらす。
この場合、上記のように、該第1排気筒31の排気孔31aの排気通路側に開口する側の上部口径をその下方のセル室40b側に開口する側の下部口径より小径とすることにより、更に電解液の流出は困難となる。
この状態から、もとの正立状態に戻すと、電解液の自重によりセル室40b内へ流下し、これに伴い、セル室40b内に戻る。
また、鉛蓄電池が横倒しになった場合も、セル室40bから流出してくる電解液は、排気孔31a又は31bを閉じた瞬間に、気液置換が行われなくなるので、エアロックが生じ、電解液の漏出が防止される。 When the storage battery having the exhaust structure is turned upside down, the electrolyte in the cell chamber 40b is evacuated upside down by the exhaust holes 31a of the first exhaust cylinder 31 and the exhaust holes 32a of the second exhaust cylinder 32. also it enters the liquid replacement into the exhaust passage 6a1, that enters the electrolyte reservoir in the cup space S _3, eventually closing the upper end opening of the first exhaust pipe 31. Then, the gas-liquid replacement through both the exhaust cylinders 31 and 32 is not performed, so-called air lock is generated, and this brings about an effect of preventing liquid leakage with no further outflow of the electrolytic solution.
In this case, as described above, by making the upper diameter of the exhaust hole 31a of the first exhaust cylinder 31 that opens to the exhaust passage side smaller than the lower diameter of the side that opens to the lower side of the cell chamber 40b. Furthermore, it is difficult for the electrolyte to flow out.
When returning to the original upright state from this state, it flows down into the cell chamber 40b due to its own weight and returns to the cell chamber 40b.
In addition, even when the lead storage battery lies on its side, the electrolyte flowing out of the cell chamber 40b is no longer gas-liquid replacement at the moment when the exhaust hole 31a or 31b is closed, so that an air lock occurs and Liquid leakage is prevented.

尚、該上蓋20の蓋板20aとこれから下垂する環状隔壁33bとから成るコップ状被覆部35は、上蓋20aとは別部材として作製し、これを該上蓋20に設けた該コップ状被覆部嵌着口(図示しない)に、熱融着などにより装着するようにしてもよい。 The cup-shaped covering portion 35 comprising the lid plate 20a of the upper lid 20 and the annular partition wall 33b that hangs down from this is produced as a separate member from the upper lid 20a, and this cup-shaped covering portion fitting provided on the upper lid 20 is fitted. You may make it mount | wear with an entrance (not shown) by heat sealing | fusion etc.

尚又、上記の液漏れ防止機能を有する排気構造として、第1排気筒31及び第2排気筒32は円筒形とすると共に、その上端部を斜めに横断して傾斜面とし、第1排気筒31の排気孔31aの下端の孔径は2mm、上端の孔径は1mmとした。第2排気筒32の排気孔32aの下端の孔径は2.5mm、上端の孔径は3mmとすることが好ましい。 In addition, as an exhaust structure having the above-described liquid leakage prevention function, the first exhaust cylinder 31 and the second exhaust cylinder 32 are cylindrical, and the upper end portion thereof is obliquely crossed to form an inclined surface. The diameter of the lower end of the 31 exhaust holes 31a was 2 mm, and the diameter of the upper end was 1 mm. The hole diameter at the lower end of the exhaust hole 32a of the second exhaust cylinder 32 is preferably 2.5 mm, and the hole diameter at the upper end is preferably 3 mm.

漏液試験を行うため、上記に作製した鉛蓄電池を倒立させ、この状態で10分間放置した後、これを再び正立させ、解体し、調べたところ、排気通路へ電解液が漏れているか否かを調べたところ、液漏れは全くなかった。
また、同蓄電池を上蓋が斜めになるように逆立ちさせ、この状態で10分間放置した後、正立させて同様に電解液の液漏れを調べたが、全く漏れはなかった。 In order to conduct a leak test, the lead storage battery prepared above is inverted, and left in this state for 10 minutes, and then it is erected again, disassembled, and examined. Whether or not the electrolyte leaks into the exhaust passage. As a result, no liquid leakage was found.
Further, the storage battery was turned upside down so that the upper lid was inclined, and was left standing in this state for 10 minutes, and then it was erected, and the leakage of the electrolytic solution was examined in the same manner, but there was no leakage at all.

上記実施例の排気構造を具備した蓄電池は、6本の排気通路6,6,…を2群に分け、左側の夫々独立した排気通路6,6,6からのガスと右側の夫々独立した排気通路6,6,6からのガスを夫々左側の共通の防爆フィルター21と右側の共通の防爆用のガスフィルター21を介し夫々ガス排出口23,23より一括排気せしめるようにしたものであるが、その使用中に、いずれか一方のガス排出口23が目詰まりする場合があり、蓄電池の損傷、破裂を起こす惧れがある。
かかる課題を解決するため、次のような排気構造に構成した。
即ち、図1及び図2に示すように、該蓋本体1の蓋板1aの上面に、該四周囲枠2の内側に、その長辺側壁2aと該長辺側壁2aに対向して平行に延び且つその両端で該長辺側壁2aに連接された長手のコ字状の囲繞隔壁5aとの間に長矩形で且つその両端が左右の空間部2c,2c内に臨み、該蓋本体1に該上蓋20を施したとき、該上蓋20に配設された左右のガスフィルター21,21の下方に位置する長矩形の相互連通路50を形成する一方、該上蓋20の四周側壁20bの内側に該蓋本体1に設けた上記の長矩形状の連通路50に対応して連通路50を、該四周側壁20bと対向し平行して延び且つその両端で長辺側壁20b1に連接された長手のコ字状の囲繞隔壁5bとの間に長矩形で且つその両端が該左右の空間部2c,2c内に臨む連通路50を形成した。
かくして、該蓋本体1を該上蓋20に施したとき、該上蓋20内の左右の防爆用ガスフィルター21,21は、該蓋本体1裏面の該連通路50と該上蓋20の該連通路50が上下方向で合体した連通路50の左右端の上方に存することとなるので、左右のガス排出口23,23のいずれか一方が詰まっても、その詰まった側の一群の排気通路6,6,6から導出されるガスは、該相互連通路50を介してその他方のガスフィルター21を介してガス排出口23から一括排気ができ、上記の課題が解決され、安定な蓄電池が確保される。
かかる相互連通路50を備えた排気構造は、上記の液式の蓄電池ばかりでなく、電解液を極板群に全部含浸された遊離電解液を生じない非液式の蓄電池にも適用し得ることは言うまでもない。 The storage battery having the exhaust structure of the above embodiment divides the six exhaust passages 6, 6,... Into two groups, the gas from the independent exhaust passages 6, 6, 6 on the left and the independent exhaust on the right The gas from the passages 6, 6, and 6 is exhausted from the gas discharge ports 23 and 23 through the common explosion-proof filter 21 on the left side and the common explosion-proof gas filter 21 on the left side. During the use, either one of the gas discharge ports 23 may be clogged, which may cause damage or explosion of the storage battery.
In order to solve this problem, the following exhaust structure is adopted.
That is, as shown in FIGS. 1 and 2, on the upper surface of the lid plate 1a of the lid body 1, on the inner side of the four peripheral frame 2, the long side wall 2a and the long side wall 2a are opposed to and parallel to each other. It extends between the two sides of the long side wall 2a and is connected to the long side U-shaped surrounding partition wall 5a in the form of a long rectangle and both ends thereof face the left and right space portions 2c, 2c. When the upper lid 20 is applied, a long rectangular mutual communication path 50 is formed below the left and right gas filters 21 and 21 disposed on the upper lid 20, while being formed inside the four-side wall 20b of the upper lid 20. Corresponding to the long rectangular communication path 50 provided in the lid body 1, the communication path 50 extends parallel to the four-side wall 20b and is connected to the long side wall 20b1 at both ends thereof. A communication path 50 having a long rectangular shape and both ends thereof facing the left and right space portions 2c and 2c was formed between the rectangular surrounding partition wall 5b.
Thus, when the lid body 1 is applied to the upper lid 20, the left and right explosion-proof gas filters 21, 21 in the upper lid 20 are connected to the communication path 50 on the back surface of the lid body 1 and the communication path 50 of the upper lid 20. Is located above the left and right ends of the communication passage 50 combined in the vertical direction, so even if one of the left and right gas discharge ports 23, 23 is clogged, the group of exhaust passages 6, 6 on the clogged side , 6 can be exhausted from the gas discharge port 23 via the other gas filter 21 via the mutual communication path 50, thereby solving the above-mentioned problems and ensuring a stable storage battery. .
The exhaust structure provided with the mutual communication path 50 can be applied not only to the liquid storage battery described above, but also to a non-liquid storage battery that does not generate a free electrolytic solution in which the electrode plate group is completely impregnated. Needless to say.

上記の実施例の蓄電池では、全排気通路を2群に分け、その夫々の群に対し共通に配設した2つのフィルターに対しこれらを相互に連通する連通路50を形成した場合を示したが、排気通路の数を問わず、その全排気通路を3つ以上に分け、その夫々の群に対し配設した3つ以上のフィルターを有する排気構造を備えた蓄電池の場合は、その各相隣るフィルター間を互いに連通する連通路を設ければよい。 In the storage battery of the above-described embodiment, the case where the entire exhaust passage is divided into two groups, and the communication passage 50 that communicates them with each other is formed for two filters that are arranged in common for each group is shown. Regardless of the number of exhaust passages, in the case of a storage battery having an exhaust structure having three or more filters arranged for each group, the entire exhaust passage is divided into three or more. What is necessary is just to provide the communicating path which mutually communicates between the filters.

上記の排気構造を具備した蓄電池は、前記した通り、逆立ち後10分程度で成立に戻せば外部へ漏れ出ることはないが、横転や逆立ちに気付かず長時間そのような状態に維持されると、横転や逆立ちによって露出した極板が、空気と反応して、内圧が変動して、エアロックバランスが崩れ、漏れ出る場合がある。そこで、本発明は、そのような場合であっても、ガスフィルターを介して外部へ漏れ出ることを長時間抑制し、電解液の外部への漏出防止効果を向上せしめることに在る。この目的を達成する本発明の蓄電池の実施形態の1例を添付図面に基づき以下に説明する。 As described above, the storage battery having the above exhaust structure does not leak to the outside if it is established in about 10 minutes after handstand, but if it is maintained in such a state for a long time without noticing rollover or handstand The electrode plate exposed by rollover or handstand may react with air, the internal pressure may fluctuate, the air lock balance may be lost, and leakage may occur. Therefore, even in such a case, the present invention is to suppress the leakage to the outside through the gas filter for a long time and to improve the effect of preventing the leakage of the electrolyte to the outside. One example of an embodiment of a storage battery of the present invention that achieves this object will be described below with reference to the accompanying drawings.

即ち、図1,図4、特に図6,図7,図8に明示するように、該蓄電池の該蓋本体1の上面に配設した夫々の独立した排気通路6a,6a,…の各排気通路6aの小室に形成される内側通路6a1内に位置する該第1,第2排気筒31,32を該環状空間S₁を存して囲繞する環状隔壁33aと該環状隔壁33aに設けた切欠口34に隣接する該第2排気筒32との間に、該蓋本体1の蓋板1aの上面に衝立60を突設したことを特徴とする。
かくして、該蓄電池が倒立したとき、各セル室40b内の電解液が該第2排気筒32から該環状隔壁33aの該切欠口34から内側通路6a1と外側通路6a2に流出するとき、該衝立60によりその流出を妨げられ、その流出が遅延せしめられ、流出電解液が該ガスフィルター21に達するまでに相当の時間がかかり、外部への漏出防止効果を向上せしめることができる。 That is, as clearly shown in FIGS. 1 and 4, particularly FIGS. 6, 7, and 8, the exhausts in the respective independent exhaust passages 6 a, 6 a,... Disposed on the upper surface of the lid body 1 of the storage battery. An annular partition wall 33a surrounding the _first and second exhaust pipes 31 and 32 located in the inner passage 6a1 formed in a small chamber of the passage 6a with the annular space S1 and a notch provided in the annular partition wall 33a A partition 60 is provided on the upper surface of the lid plate 1a of the lid body 1 between the second exhaust cylinder 32 adjacent to the opening 34.
Thus, when the storage battery is inverted, the electrolyte in each cell chamber 40b flows from the second exhaust pipe 32 to the inner passage 6a1 and the outer passage 6a2 from the notch 34 of the annular partition wall 33a. Therefore, the outflow is prevented, the outflow is delayed, and it takes a considerable time for the outflow electrolyte to reach the gas filter 21, so that the effect of preventing leakage to the outside can be improved.

上記の本発明の蓄電池10個につき、夫々倒立させた時点から流出電解液がガスフィルターを濡らし、漏出が開始されるまでの時間を測定したところ、平均約6時間を要した。これに対し、上記の衝立を具備しない従来の上記特許文献1の発明に係る蓄電池の10個につき、倒立させた時点から電解液の流出が開始されるまでの時間は、平均約3時間であった。
このように、本発明の蓄電池によれば、著しい電解液漏出防止効果が認められた。 For each of the 10 storage batteries of the present invention, the time from when each was inverted until the effluent electrolyte wetted the gas filter and the leakage started was measured, and it took about 6 hours on average. On the other hand, for the 10 storage batteries according to the invention of the above-mentioned Patent Document 1 that do not have the above screen, the time from when the battery is inverted to when the electrolyte starts to flow out is about 3 hours on average. It was.
Thus, according to the storage battery of the present invention, a remarkable electrolyte leakage prevention effect was recognized.

次いで、倒立した蓄電池を正立状態に戻したとき、各排気通路内に滞留している電解液は各セル室に戻るが、その電解液の全てを短時間に戻すことが好ましい。そのため、該蓋板1aの上面に、該環状隔壁33aの該切欠口34と該第2排気筒32の上端の傾斜開口面32a1との間に、該傾斜開口面32a1に向かい下り坂とした傾斜溝61を設け、該傾斜溝61を跨ぎ該衝立60を設け、電解液が還流する際に、該衝立60の周辺を通り還流するばかりでなく、該傾斜溝61を通り還流せしめるようにし、その全量が戻る時間を短縮することができるようにした。
更に、該蓋板1aに、該環状隔壁33aの内周面に沿い複数の還流孔62を配設するときは、更に、その還流時間を短縮することができる。 Next, when the inverted storage battery is returned to the upright state, the electrolytic solution staying in each exhaust passage returns to each cell chamber, but it is preferable to return all of the electrolytic solution in a short time. Therefore, on the upper surface of the cover plate 1a, between the notch 34 of the annular partition wall 33a and the inclined opening surface 32a1 at the upper end of the second exhaust cylinder 32, an inclined surface that slopes downward toward the inclined opening surface 32a1. The groove 61 is provided, the partition 60 is provided across the inclined groove 61, and when the electrolyte recirculates, not only does it recirculate through the periphery of the partition 60 but also recirculates through the inclined groove 61, The time to return the whole amount can be shortened.
Furthermore, when a plurality of reflux holes 62 are provided in the lid plate 1a along the inner peripheral surface of the annular partition wall 33a, the reflux time can be further shortened.

本発明を、上記の実施態様では鉛蓄電池で説明したが、ニッカド電池その他の蓄電池に適用できる。
また、上記実施例では、該上蓋20として箱形のものを使用したが、これに代え、図示しないが、四周側壁を欠く単なる蓋板とし、その周縁部を蓋本体の四周囲枠に気密に結着させ、その裏面に蓋本体の該四周囲枠内の各囲繞隔壁の上端を気密に結着すると共に、夫々の独立した排気通路と連通する少なくとも1個のガスフィルターを介し、該蓋板に穿設したガス排出口から一括排気するように形成してもよい。
また、上記の実施例では、該蓋本体1の該四周囲枠2aを、その上面を凹面1a1とし、その凹面空間内に設けたが、図示しないが、該蓋本体の上面を平坦面とし、その平坦面から上方に突出するように形成し、その内部に上記の排気構造を構成してもよい。尚、上記の実施例では、上蓋が蓋本体より僅かに突出して施したものを示したが、上蓋が蓋本体と同一面としてもよい。 Although the present invention has been described with lead storage batteries in the above embodiments, it can be applied to nickel-cadmium batteries and other storage batteries.
Further, in the above embodiment, a box-shaped one is used as the upper lid 20, but instead of this, it is not shown, but it is a simple lid plate lacking a four-side wall, and its peripheral edge is airtight to the four-side frame of the lid body. The lid plate is airtightly bound to the back surface of each of the surrounding bulkheads in the four peripheral frames of the lid body, and the lid plate is connected via at least one gas filter communicating with each independent exhaust passage. You may form so that it may exhaust collectively from the gas exhaust port drilled in.
Further, in the above embodiment, the four peripheral frames 2a of the lid body 1 are provided with the upper surface as the concave surface 1a1 and in the concave space, although not shown, the upper surface of the lid body is a flat surface, The exhaust structure may be formed so as to protrude upward from the flat surface, and the exhaust structure described above may be configured therein. In the above embodiment, the upper lid is slightly protruded from the lid body, but the upper lid may be flush with the lid body.

1 蓋本体
1a 蓋板
3 排気筒
6 排気通路
20 上蓋
20a 蓋板
21 ガスフィルター
31 第1排気筒
31a 排気孔
31a1 上端開口
32 第2排気筒
32a 排気孔
32a1 上端開口
33a 環状隔壁
33b 環状隔壁
34 切欠口
35 コップ状被覆部
S₁ 環状空間
S₂ 空隙
S₃ コップ空間
40 電槽
40b セル室
60 衝立
61 傾斜溝 1 Lid body
1a Cover plate
3 Exhaust pipe
6 Exhaust passage
20 Upper lid
20a Cover plate
21 Gas filter
31 First exhaust stack
31a Exhaust hole
31a1 Upper end opening
32 Second stack
32a Exhaust hole
32a1 Upper end opening
33a Annular bulkhead
33b Annular bulkhead
34 Notch
35 Cup cover
S ₁ annular space
S ₂ gap
S ₃ cup space
40 battery case
40b cell room
60 partitions
61 Inclined groove

Claims

内部を仕切壁により区画された複数のセル室を有する電槽の上面に、その夫々のセル室に連通する夫々の排気筒と、相隣る排気筒間を隔離し且つ囲繞する囲繞隔壁により夫々独立した排気通路を形成すると共に、蓋板の上面にその各排気筒を囲繞し、且つ排気通路に連通開口する切欠口を有する環状隔壁を突設して成る蓋本体を気密に施し、更に、該蓋本体の夫々の排気通路の上面開口に上蓋を気密に施し、該上蓋の裏面に形成した囲繞隔壁を該蓋本体の囲繞隔壁に合体させて該囲繞隔壁により夫々独立した排気通路を該蓋本体の夫々独立した排気通路に対応させると共に、該上蓋の裏面から下垂突出する各コップ状被覆部を該蓋本体の該蓋板の上面に突設した環状隔壁に合体させ、前記の対応したこれら排気通路に共通の少なくとも1つのガスフィルターを介し一括排気せしめるガス排出口を設け、更に、各排気筒を第1排気筒と第2排気筒に分割形成すると共にその一方の第1排気筒の上端を該上蓋の裏面から下垂突出する各コップ状被覆部の空間内に臨ませる一方、他方の第2排気筒の上端開口面は該コップ状被覆部の空間内に臨まない高さ位置とし、隣接する該環状隔壁の該切欠口を介し排気通路に連通せしめて成る排気構造を具備した蓄電池において、該蓋本体の該蓋板の上面に該環状隔壁の該切欠口とこれに連通する該第2排気筒の上端開口面との間に衝立を突設したことを特徴とする蓄電池。 On the upper surface of the battery case having a plurality of cell chambers that are partitioned by partition walls, the respective exhaust tubes communicating with the respective cell chambers and the surrounding partition walls that isolate and surround the adjacent exhaust tubes, respectively. Forming an independent exhaust passage, and airtightly applying a lid main body formed by projecting an annular partition wall having a cutout opening surrounding the exhaust cylinder on the upper surface of the cover plate and communicating with the exhaust passage; An upper lid is provided in an airtight manner on the upper surface opening of each exhaust passage of the lid body, and a surrounding partition formed on the back surface of the upper lid is combined with the surrounding partition of the lid body so that an independent exhaust passage is formed by the surrounding partition. Each of the cup-shaped covering portions projecting downward from the back surface of the upper lid is combined with an annular partition wall projecting from the upper surface of the lid plate of the lid main body, so as to correspond to the independent exhaust passages of the main body. At least one gas common to the exhaust passage A gas exhaust port is provided for exhausting the exhaust gas through a filter, and each exhaust tube is divided into a first exhaust tube and a second exhaust tube, and the upper end of one of the first exhaust tubes protrudes downward from the back surface of the upper lid. The upper opening surface of the other second exhaust pipe is positioned so as not to face the space of the cup-shaped covering portion, and the notch of the adjacent annular partition wall In the storage battery having an exhaust structure that communicates with the exhaust passage through the upper surface of the lid plate of the lid body, the notch of the annular partition wall and the upper end opening surface of the second exhaust cylinder communicating with the notch A storage battery characterized by having a partition in between.

該蓋本体の該蓋板に該第2排気筒に向かい下り坂の傾斜溝を設け、該傾斜溝を跨ぎ該衝立を設けたことを特徴とする請求項1に記載の蓄電池。 2. The storage battery according to claim 1, wherein the lid plate of the lid body is provided with an inclined groove on the down slope toward the second exhaust pipe, and the partition is provided across the inclined groove.