JP4899250B2 - battery - Google Patents

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Publication number
JP4899250B2
JP4899250B2 JP2001112331A JP2001112331A JP4899250B2 JP 4899250 B2 JP4899250 B2 JP 4899250B2 JP 2001112331 A JP2001112331 A JP 2001112331A JP 2001112331 A JP2001112331 A JP 2001112331A JP 4899250 B2 JP4899250 B2 JP 4899250B2
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JP
Japan
Prior art keywords
battery
mounting
mounting hole
liquid
threaded portion
Prior art date
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Expired - Lifetime
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JP2001112331A
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Japanese (ja)
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JP2002313316A (en
Inventor
松治 池田
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Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2001112331A priority Critical patent/JP4899250B2/en
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Gas Exhaust Devices For Batteries (AREA)
  • Filling, Topping-Up Batteries (AREA)
  • Secondary Cells (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は液口栓や排気栓の栓部材およびまたは温度センサー、液面センサー等のセンサー類を装着した電池に関するものである。
【０００２】
【従来の技術】
自動車用鉛蓄電池は通常６セルが直列接続されて１２Ｖ電池を構成している。そしてそれぞれのセルには電解液を注入する孔が設けられている。この孔はセル内の電解液面が低下したときに液を補充するためにも使用される。通常の電池使用時にこの孔には液口栓やこれに排気機能を兼ね備えた排気栓が装着されている。また、一部の電池には電解液面高さ、電解液比重、温度や電極の電位等、電池内部の状態を検出するためのセンサー類が装着されているものがある。このような液口栓、排気栓およびその他のセンサー（以下、装着部材と云う）はゴムパッキング等のシール材を介してねじの螺合により前記孔に装着されている。従って前記孔は装着部材の装着孔の機能を果している。そして、この装着孔は極板群を収容する電槽に接合される蓋に設けられているのが普通である。
【０００３】
蓋にねじを設ける必要があることから、蓋の成形に用いる金型にはこのねじを形成するねじを設け、蓋を金型から抜き取る際にはこのねじを回転させて蓋から抜き取る必要がある。このようなことから金型が複雑になるとともに、蓋を金型から抜き取る時間が必要であり、結果として電池の価格を低減するには不都合なものであった。
【０００４】
【発明が解決しようとする課題】
本発明は前記したような装着部材を装着するねじ部を蓋等の電池容器に設けた電池において、この蓋の成形に用いる金型を単純なものとし、さらには成形に要する時間を短縮することにより電池の低価格化を実現することを目的とする。
【０００５】
【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の請求項１に記載の発明は、液口栓、排気栓を含む栓部材および／または液面センサー、電解液比重センサー、温度センサー、電極の電位センサーを含む電池内の状態を検出するための検出部材からなる装着部材と、この装着部材を装着するための装着孔を電池外装に備えた電池において、前記装着部材の外周には外周ねじ部を設け、前記装着孔の内周には内周ねじ部を設けてこれら外周ねじ部と内周ねじ部とを螺合して前記装着部材を前記装着孔に固定する構成であって、前記外周ねじ部の螺旋は１周り以上の螺旋とし、前記内周ねじ部の螺旋は１周り未満の螺旋としたことを特徴とする電池を示すものである。
【０００６】
本発明の請求項２に記載の発明は、請求項１に記載の構成を有する電池において、前記装着部材が装着孔に装着された状態で、前記装着部材の天面と前記装着孔の外縁とは同一平面を構成し、前記装着部材の天面には鍔部が設けられ、前記装着部材が前記装着孔に装着された状態では外周ねじ部と内周ねじ部の螺合位置よりも電池内側に設けられた外周ねじ部のねじ山数とピッチとの積を前記鍔部の厚みより大きく構成した電池を示すものである。
【０００７】
本発明の請求項３に記載の発明は、請求項２に記載の構成を有する電池において、鍔部と装着孔との間に弾性を備えたパッキングを設けた電池を示すものである。
【０００８】
【発明の実施の形態】
本発明の実施の形態を図面を用いて説明する。
【０００９】
図１（ａ）は本発明の一実施例の電池の装着部材である液口栓の上面図、図１（ｂ）は同側面図、図１（ｃ）は液口栓を装着する前段階の装着孔である液口の要部を示す断面図、図２は図１に示した本発明の一実施例の電池において、液口栓を液口に装着した状態を示す要部断面図である。
【００１０】
極板群（図示せず）を収納する電槽１の開口部に蓋２が接合されている。電槽１は例えば隔壁によって複数のセル室に区画されている。セル室に対応して蓋２には液口栓３を装着するための液口４が設けられている。この液口４は請求項において特定した装着孔の一形態である。液口４の内部には内周ねじ部４ａが設けられている。
【００１１】
本発明においてはこの内周ねじ部４ａの螺旋４ｂは液口４の内周の１周り未満の環状として設けるものである。このような構成によれば内周ねじ部４ａに対応する金型を抜き型時に回転させる必要がないので、金型の構造を簡便にできるとともに、抜き型を離脱して成形するのに要する時間も短縮することができる。特に自動車用鉛蓄電池のように複数の液口が設けられている場合にはこのような効果を顕著に奏することができる。さらに液口栓３の外周には内周ねじ部４ａに対応する外周ねじ部３ａが形成されている。この外周ねじ部３ａを構成する螺旋３ｂは液口栓３の外周に１周り以上の螺旋として設ける。外周ねじ部３ａを成形する金型は単純な２分割された金型でよく、外周ねじ部３ａを成形する場合に金型を回転させる必要は全くない。また外周ねじ部３ａの全周で螺合できるよう、少なくとも外周ねじ部３ａ、螺旋３ｂを複数周の環状として形成することが好ましい。
【００１２】
液口栓３と液口４との間から電池内部の電解液が流出しないように、弾性を備えたパッキング５が設けられている。このパッキング５は常に厚み方向に圧縮されることによって、液口栓３と液口４との間の液密性が保持されている。電池を長期間使用した場合、電解液面の低下により液口から精製水を補給する必要があるが、その際には液口栓３は一旦取り外され、精製水を補給後、再度液口栓３が液口４に装着される。長期間使用されたパッキング５は厚み方向に圧縮されて厚みが減少しているので螺旋３ｂを下方、すなわち電池の内部方向に向かって設ける必要がある。
【００１３】
さらに、液口４に装着された状態での液口栓３の天面３ｃを蓋２の天面２ａと一致させた構成とし、液口栓３の天面３ｃに＋もしくは−のねじ溝６を図１（ａ）に示すように形成し、このねじ溝６にコイン状部材を挿入して液口栓３を回転させて液口４に液口栓３を装着したり脱離する。液口栓３の天面３ｃに液口栓３を保持する指つまみ部が形成されていないので蓋２から液口栓３を取り外す作業が非常に困難である。本発明の好ましい構成においては液口栓３の天面３ｃに鍔部３ｄを設け、液口栓３を蓋２から脱離する過程において、図３に示すように外周ねじ部３ａと内周ねじ部４ａの螺合が解除された時点で液口栓３の鍔部３ｄが蓋２の天面２ａよりも上方に位置するように構成する。すなわち、液口栓３が液口４に装着された状態において外周ねじ部３ａと内周ねじ部４ａとの螺合部の下端よりも鍔部３ｄの厚み寸法以上の長さで外周ねじ部３ａを下方向に構成する。このような構成によれば、図３に示したように液口栓３の脱離過程において外周ねじ部３ａと内周ねじ部４ａとの螺合が解除された時点で液口４と鍔部３ｄとの間に図３に示すように空間７が形成されるので、この空間７にドライバー等の治具を挿入して液口栓３を押し上げることにより、液口４から容易に液口栓３を取り外すことができる。また、パッキング５は円環形状を有しており鍔部３ｄは下面と液口４の周囲面４ｃとの間に装着されている。
【００１４】
なお、液口栓に替えてセル内の電解液比重センサーや温度センサー等の各種センサーを装着した装着部材としても本発明を勿論適用することができる。
【００１５】
【発明の効果】
前記したように本発明の構成によれば液口栓等の装着部材を装着するねじ部を蓋等の電池容器に設けた電池において、この蓋の成形に用いる金型を単純なものとし、さらには成形に要する時間を短縮することにより電池の低価格化を実現することができるとともに、この装着部材の着脱性を改善することができる。
【図面の簡単な説明】
【図１】本発明の電池を示す破截断面図
【図２】本発明の電池を示す破截断面図
【図３】本発明の電池において装着部材を脱離する過程を示す図
【符号の説明】
１ 電槽
２ 蓋
２ａ 蓋２の天面
３ 液口栓（装着部材）
３ａ 外周ねじ部
３ｂ 外周ねじ部３ａの螺旋
３ｃ 液口栓３の天面
３ｄ 鍔部
４ 液口（装着孔）
４ａ 内周ねじ部
４ｂ 内周ねじ部４ａの螺旋
４ｃ 周囲面
５ パッキング
６ ねじ溝
７ 空間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery equipped with a plug member for a liquid spout and an exhaust plug and sensors such as a temperature sensor and a liquid level sensor.
[0002]
[Prior art]
In general, a lead-acid battery for an automobile has a 12V battery in which 6 cells are connected in series. Each cell is provided with a hole for injecting an electrolytic solution. This hole is also used to replenish the liquid when the electrolyte level in the cell drops. When a normal battery is used, the hole is provided with a liquid plug and an exhaust plug having an exhaust function. Some batteries are equipped with sensors for detecting the internal state of the battery, such as the electrolyte surface height, electrolyte specific gravity, temperature, and electrode potential. Such a liquid plug, an exhaust plug and other sensors (hereinafter referred to as mounting members) are mounted in the holes by screwing through a sealing material such as rubber packing. Accordingly, the hole functions as a mounting hole of the mounting member. And this mounting hole is normally provided in the lid | cover joined to the battery case which accommodates an electrode group.
[0003]
Since it is necessary to provide a screw on the lid, it is necessary to provide a screw for forming the screw in a mold used for molding the lid, and when removing the lid from the die, it is necessary to rotate the screw and remove it from the lid. . For this reason, the mold becomes complicated, and it takes time to remove the lid from the mold. As a result, it is inconvenient to reduce the price of the battery.
[0004]
[Problems to be solved by the invention]
The present invention is a battery in which a screw part for mounting a mounting member as described above is provided in a battery container such as a lid, and the die used for molding the lid is simplified, and further, the time required for molding is shortened. The purpose is to reduce the price of the battery.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention includes a plug member and / or a liquid level sensor including a liquid plug, an exhaust plug , an electrolyte specific gravity sensor, a temperature sensor, and an electrode potential sensor. In a battery including a mounting member made of a detection member for detecting a state in the battery including and a mounting hole for mounting the mounting member on the battery exterior, an outer peripheral thread portion is provided on an outer periphery of the mounting member, An inner peripheral screw portion is provided on the inner periphery of the mounting hole, and the outer peripheral screw portion and the inner peripheral screw portion are screwed together to fix the mounting member to the mounting hole. The battery is characterized in that the spiral is one or more spirals, and the spiral of the inner peripheral screw portion is less than one spiral.
[0006]
According to a second aspect of the present invention, in the battery having the configuration according to the first aspect, the top surface of the mounting member and the outer edge of the mounting hole in a state where the mounting member is mounted in the mounting hole. Are configured on the same plane, and a flange portion is provided on the top surface of the mounting member, and when the mounting member is mounted in the mounting hole, the inner side of the battery is positioned more than the screw position of the outer peripheral screw portion and the inner peripheral screw portion. 1 shows a battery in which the product of the number of threads and the pitch of the outer peripheral threaded portion provided in is larger than the thickness of the flange portion.
[0007]
The invention described in claim 3 of the present invention is a battery having the configuration described in claim 2, wherein the battery is provided with a packing having elasticity between the flange portion and the mounting hole.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
[0009]
FIG. 1A is a top view of a liquid spigot that is a battery mounting member according to an embodiment of the present invention, FIG. 1B is a side view thereof, and FIG. 1C is a stage before mounting the liquid spigot. 2 is a cross-sectional view showing the main part of the liquid port which is the mounting hole of FIG. 2, and FIG. 2 is a cross-sectional view showing the main part of the battery according to the embodiment of the present invention shown in FIG. is there.
[0010]
A lid 2 is joined to an opening of a battery case 1 that accommodates an electrode plate group (not shown). The battery case 1 is partitioned into a plurality of cell chambers by partition walls, for example. Corresponding to the cell chamber, the lid 2 is provided with a liquid port 4 for mounting a liquid port plug 3. The liquid port 4 is a form of the mounting hole specified in the claims. An inner peripheral screw portion 4 a is provided inside the liquid port 4.
[0011]
In the present invention, the spiral 4 b of the inner peripheral threaded portion 4 a is provided as an annular shape less than one around the inner periphery of the liquid port 4. According to such a configuration, it is not necessary to rotate the mold corresponding to the inner peripheral screw portion 4a at the time of punching, so that the structure of the mold can be simplified and the time required to remove the punch and mold it. Can also be shortened. In particular, when a plurality of liquid ports are provided as in a lead acid battery for automobiles, such an effect can be remarkably exhibited. Further, an outer peripheral screw portion 3 a corresponding to the inner peripheral screw portion 4 a is formed on the outer periphery of the liquid spout 3. The spiral 3b constituting the outer peripheral screw portion 3a is provided as one or more spirals on the outer periphery of the liquid spout 3. The mold for forming the outer peripheral screw portion 3a may be a simple two-divided mold, and there is no need to rotate the mold when forming the outer peripheral screw portion 3a. Moreover, it is preferable to form at least the outer periphery screw portion 3a and the spiral 3b as an annular shape having a plurality of circumferences so that the entire periphery of the outer periphery screw portion 3a can be screwed.
[0012]
A packing 5 having elasticity is provided so that the electrolyte in the battery does not flow out between the liquid port plug 3 and the liquid port 4. The packing 5 is always compressed in the thickness direction so that the liquid tightness between the liquid spout 3 and the liquid spout 4 is maintained. When the battery is used for a long period of time, it is necessary to replenish purified water from the liquid port due to a decrease in the electrolyte level. In that case, the liquid port plug 3 is once removed, and after replenishing purified water, the liquid port plug is again provided. 3 is attached to the liquid port 4. Since the packing 5 used for a long time is compressed in the thickness direction and the thickness is reduced, it is necessary to provide the spiral 3b downward, that is, toward the inside of the battery.
[0013]
Further, the top surface 3c of the liquid spigot 3 in a state of being attached to the liquid spout 4 is configured to coincide with the top surface 2a of the lid 2, and a + or-thread groove 6 is formed on the top surface 3c of the liquid spout plug 3. As shown in FIG. 1A, a coin-like member is inserted into the thread groove 6 and the liquid port plug 3 is rotated to attach or detach the liquid port plug 3 to or from the liquid port 4. Since the finger grip portion for holding the liquid spigot 3 is not formed on the top surface 3c of the liquid spigot 3, it is very difficult to remove the liquid spigot 3 from the lid 2. In a preferred configuration of the present invention, in the process of providing the flange 3d on the top surface 3c of the liquid spigot 3 and removing the liquid spigot 3 from the lid 2, as shown in FIG. When the screwing of the part 4 a is released, the flange part 3 d of the liquid spout 3 is configured to be positioned above the top surface 2 a of the lid 2. That is, in a state in which the liquid spout 3 is attached to the liquid spout 4, the outer peripheral threaded portion 3a is longer than the lower end of the threaded portion between the outer peripheral threaded portion 3a and the inner peripheral threaded portion 4a and is longer than the thickness dimension of the flange 3d. Is configured downward. According to such a configuration, as shown in FIG. 3, when the screwing between the outer peripheral screw portion 3a and the inner peripheral screw portion 4a is released in the process of detaching the liquid port plug 3, the liquid port 4 and the collar portion are removed. As shown in FIG. 3, a space 7 is formed between the liquid port 3d and the liquid port plug 4 from the liquid port 4 easily by inserting a jig such as a driver into the space 7 and pushing up the liquid port plug 3. 3 can be removed. The packing 5 has an annular shape, and the flange portion 3 d is mounted between the lower surface and the peripheral surface 4 c of the liquid port 4.
[0014]
Of course, the present invention can be applied to a mounting member in which various sensors such as an electrolyte specific gravity sensor and a temperature sensor in the cell are mounted instead of the liquid plug.
[0015]
【Effect of the invention】
As described above, according to the configuration of the present invention, in a battery in which a screw part for mounting a mounting member such as a liquid spigot is provided in a battery container such as a lid, the mold used for molding the lid is simplified. Can reduce the cost of the battery by reducing the time required for molding, and can improve the detachability of the mounting member.
[Brief description of the drawings]
FIG. 1 is a broken sectional view showing a battery of the present invention. FIG. 2 is a broken sectional view showing a battery of the present invention. FIG. 3 is a diagram showing a process of removing a mounting member in the battery of the present invention. Explanation】
1 Battery Case 2 Lid 2a Top 2 of Lid 2 Liquid Cap (Mounting Member)
3a Outer thread part 3b Spiral 3c of outer thread part 3a Top surface 3d of liquid spout 3 Gutter part 4 Liquid port (mounting hole)
4a Inner thread portion 4b Spiral 4c of inner thread portion 4a Surrounding surface 5 Packing 6 Screw groove 7 Space

Claims (3)

液口栓、排気栓を含む栓部材および／または液面センサー、電解液比重センサー、温度センサー、電極の電位センサーを含む電池内の状態を検出するための検出部材からなる装着部材と、この装着部材を装着するための装着孔を電池外装に備えた電池において、前記装着部材の外周には外周ねじ部を設け、前記装着孔の内周には内周ねじ部を設けてこれら外周ねじ部と内周ねじ部とを螺合して前記装着部材を前記装着孔に固定する構成であって、前記外周ねじ部の螺旋は１周り以上の螺旋とし、前記内周ねじ部の螺旋は１周り未満の螺旋としたことを特徴とする電池。A mounting member comprising a detection member for detecting a state in the battery including a plug member and / or a plug member including an exhaust plug and / or a liquid level sensor , an electrolyte specific gravity sensor, a temperature sensor, and an electrode potential sensor, and this mounting In a battery provided with a mounting hole for mounting a member on the battery exterior, an outer peripheral screw portion is provided on the outer periphery of the mounting member, and an inner peripheral screw portion is provided on the inner periphery of the mounting hole. The mounting member is fixed to the mounting hole by screwing with an inner peripheral threaded portion, wherein the outer peripheral threaded portion has one or more spirals, and the inner peripheral threaded portion has less than one spiral. A battery characterized by having a spiral. 前記装着部材が装着孔に装着された状態で、前記装着部材の天面と前記装着孔の外縁とは同一平面を構成し、前記装着部材の天面には鍔部が設けられ、前記装着部材が前記装着孔に装着された状態では外周ねじ部と内周ねじ部の螺合位置よりも電池内側に設けられた外周ねじ部のねじ山数とピッチとの積を前記鍔部の厚みより大きく構成したことを特徴とする請求項１に記載の電池。With the mounting member mounted in the mounting hole, the top surface of the mounting member and the outer edge of the mounting hole constitute the same plane, and the top surface of the mounting member is provided with a flange, Is installed in the mounting hole, the product of the number of threads and the pitch of the outer peripheral threaded portion provided on the inner side of the battery is larger than the thickness of the flange than the screwing position of the outer peripheral threaded portion and the inner peripheral threaded portion The battery according to claim 1, which is configured. 前記鍔部と前記装着孔との間に弾性を備えたパッキングを設けたことを特徴とする請求項２に記載の電池。The battery according to claim 2, wherein an elastic packing is provided between the flange and the mounting hole.
JP2001112331A 2001-04-11 2001-04-11 battery Expired - Lifetime JP4899250B2 (en)

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