JPH088090B2 - Sealed lead acid battery - Google Patents
Sealed lead acid batteryInfo
- Publication number
- JPH088090B2 JPH088090B2 JP1303643A JP30364389A JPH088090B2 JP H088090 B2 JPH088090 B2 JP H088090B2 JP 1303643 A JP1303643 A JP 1303643A JP 30364389 A JP30364389 A JP 30364389A JP H088090 B2 JPH088090 B2 JP H088090B2
- Authority
- JP
- Japan
- Prior art keywords
- sealed lead
- acid battery
- plate
- elastic body
- exhaust port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/394—Gas-pervious parts or elements
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、密閉形鉛蓄電池の排気弁の改良に関するも
のである。TECHNICAL FIELD The present invention relates to an improvement of an exhaust valve of a sealed lead acid battery.
従来技術とその問題点 密閉形鉛蓄電池は、充電中に正極板から発生した酸素
ガスを負極板で吸収除去する方式を採用しているため、
通常は外部へのガス放出はないが大電流で充電した場合
には、負極板のガス吸収速度よりも正極板で発生する酸
素ガス量が大きくなるため、完全に密閉化するとセルの
内圧が上昇し電槽破損に至る。そのため、密閉形鉛蓄電
池にはセルの内圧が上昇すると内部のガスを放出する安
全弁が設けられているのが通例である。Conventional technology and its problems Since the sealed lead-acid battery adopts a method in which the oxygen gas generated from the positive electrode plate during charging is absorbed and removed by the negative electrode plate,
Normally, there is no gas release to the outside, but when charged with a large current, the amount of oxygen gas generated in the positive electrode plate becomes larger than the gas absorption rate of the negative electrode plate, so the internal pressure of the cell rises when completely sealed. The battery case is damaged. Therefore, a sealed lead-acid battery is usually provided with a safety valve that releases internal gas when the internal pressure of the cell rises.
一方、自然放置状態では負極板が酸素ガスを吸収する
ため、大気とセル内を遮断しないと負極板が酸化されて
自己放電の原因となるので、前記安全弁には遮断弁とし
ての機能も要求される。通常このような機能を有する安
全弁を備えた蓄電池では、セル内の酸素ガスが負極板で
吸収除去されているため、減圧状態になっている。On the other hand, since the negative electrode plate absorbs oxygen gas in a state of being left unattended, the negative electrode plate will be oxidized and cause self-discharge unless the atmosphere and the inside of the cell are shut off.Therefore, the safety valve is also required to function as a shutoff valve. It Normally, in a storage battery equipped with a safety valve having such a function, the oxygen gas in the cell is absorbed and removed by the negative electrode plate, so that the battery is in a depressurized state.
従来の密閉形鉛蓄電池においても、上記した機能を有
する安全弁が設けられている。第２図に示すものは、従
来より一般的に用いられてきたいわゆるキャップ弁と称
されるものである。第２図において従来の排気部構造
は、蓋３′の排気口５′にかぶせるように装着するゴム
製のキャップ弁７と、このキャップ弁７を押える上蓋
４′より成る構造となっている。この排気部構造は、複
数の排気口を備える電池では排気口ごとに個別のキャッ
プ弁が装着されている。従って、信頼性は高いものの、
キャップ状にゴムを成形、加工するため材料費自体が高
くなり、また個々の排気口にキャップ弁を装着しなくて
はならないため作業性も低く、高コストになるという問
題点があった。また、安全弁を構成する部分は、かなり
のスペースを必要とし、密閉形鉛蓄電池の小形化を図る
上で大きな問題点であった。The conventional sealed lead-acid battery also has a safety valve having the above-mentioned function. The one shown in FIG. 2 is a so-called cap valve which has been generally used conventionally. In FIG. 2, the conventional exhaust part structure is composed of a rubber cap valve 7 mounted so as to cover the exhaust port 5'of the lid 3 ', and an upper lid 4'for pressing the cap valve 7. With this exhaust part structure, a cap valve is attached to each exhaust port in a battery having a plurality of exhaust ports. Therefore, although highly reliable,
Since rubber is molded and processed into a cap shape, the material cost itself is high, and the cap valve must be attached to each exhaust port, resulting in low workability and high cost. Further, the portion forming the safety valve requires a considerable space, which is a big problem in miniaturizing the sealed lead acid battery.
発明の目的 本発明は上記問題点を解消したもので、信頼性に優
れ、専有スペースが小さく、製造作業性がよく、低コス
トな排気部構造を備えた密閉形鉛蓄電池を提供するもの
である。It is an object of the present invention to solve the above problems, and to provide a sealed lead-acid battery having an exhaust structure that is excellent in reliability, has a small occupied space, has good manufacturing workability, and has a low cost. .
発明の構成 本発明は、その特許請求の範囲に記載した通りの密閉
形鉛蓄電池である。Configuration of the Invention The present invention is a sealed lead-acid battery as described in the claims thereof.
実施例 本発明の一実施例を図面に基づき説明する。第１図は
本発明密閉形鉛蓄電池に用いる排気部構造の断面図であ
る。本発明密閉形鉛蓄電池は、各セル毎に複数個の排気
口５を有する蓋３と、下部に突起６を有する上蓋４と、
ゴム製の板状弾性体１と、貫通穴８を有する吸液性を有
する微細なガラス繊維シート２とを備えている。前記蓋
３の排気口５の外側の角部９は、Ｒ状に形成され、前記
上蓋４の突起６の先端は、曲面状に形成されている。前
記排気口５の周辺にはシリコンオイルが塗布されてお
り、前記板状弾性体１で該排気口５の外側を覆い、該板
状弾性体１の上に前記ガラス繊維シート２を当接し、前
記上蓋４の突起６を用いて該ガラス繊維シート２の貫通
穴８を通して該板状弾性体１を押圧している。なお、上
蓋４と蓋３とは、超音波溶着されている。Embodiment An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view of an exhaust part structure used in the sealed lead-acid battery of the present invention. The sealed lead-acid battery of the present invention includes a lid 3 having a plurality of exhaust ports 5 for each cell, and an upper lid 4 having a protrusion 6 at the bottom thereof.
It is provided with a plate-like elastic body 1 made of rubber and a fine glass fiber sheet 2 having a liquid absorbing property and having a through hole 8. The outer corner portion 9 of the exhaust port 5 of the lid 3 is formed in an R shape, and the tip of the protrusion 6 of the upper lid 4 is formed in a curved shape. Silicon oil is applied around the exhaust port 5, the outside of the exhaust port 5 is covered with the plate-like elastic body 1, and the glass fiber sheet 2 is brought into contact with the plate-like elastic body 1. The plate-like elastic body 1 is pressed through the through holes 8 of the glass fiber sheet 2 using the protrusions 6 of the upper lid 4. The upper lid 4 and the lid 3 are ultrasonically welded.
板状弾性体１は、上蓋４の突起６で押えられ、且つガ
ラス繊維シート２で該板状弾性体１の端部の浮き上りを
防止し、更に排気口５の外側の角部９はＲ状に形成され
ているため、安定した開弁圧と、セル内の減圧時には確
実な気密性を有するものである。本実施例には、12Vセ
ル仕様による密閉形鉛蓄電池を例示したので、排気口５
は各セル毎に設けられ、全部で６個備えている。The plate-like elastic body 1 is pressed by the projections 6 of the upper lid 4, and the glass fiber sheet 2 prevents the end of the plate-like elastic body 1 from rising, and the corner portion 9 outside the exhaust port 5 is rounded. Since it is formed into a shape, it has stable valve opening pressure and reliable airtightness when the pressure in the cell is reduced. In this embodiment, the sealed lead-acid battery with the 12V cell specification is shown as an example.
Are provided for each cell, and a total of 6 are provided.
弁体としての板状弾性体１とガラス繊維シート２及び
上蓋４は、各セル上に連続した一括構造であってもよ
く、また、各セル毎に個々に設けてもよい。The plate-like elastic body 1 as the valve body, the glass fiber sheet 2 and the upper lid 4 may have a continuous structure on each cell, or may be individually provided for each cell.
なお、吸液性を有する微細なガラス繊維シート２を使
用したのは、耐酸性がよく、且つ約90％のポロシティが
あるため吸液力が強く、万一板状弾性体１の外周部より
漏液があっても、吸液を充分に行うため電池外へ漏液す
ることがない。It should be noted that the reason why the fine glass fiber sheet 2 having a liquid absorbing property is used is that it has a good acid resistance and has a strong liquid absorbing force due to the porosity of about 90%. Even if there is a liquid leak, it does not leak to the outside of the battery because it is sufficiently absorbed.
発明の効果 本発明は、その特許請求の範囲に記載した通りの排気
部構造を備えた密閉形鉛蓄電池であるため、材料費が安
価で、作業性が極めて良好で、低価格の密閉形鉛蓄電池
を提供できる。また、電池内部が加圧状態においてはバ
ラツキが少ない低い開弁圧で内部ガスを放出し、減圧状
態においては、板状弾性体１と排気口５の周囲とは確実
に接触し、高い気密性を実現できる。更に、弁体が平板
状であるため、電池の小形化が容易に図れる。EFFECTS OF THE INVENTION The present invention is a sealed lead-acid battery having an exhaust part structure as set forth in the claims, so that the material cost is low, the workability is extremely good, and the sealed lead is inexpensive. A storage battery can be provided. In addition, when the inside of the battery is pressurized, the internal gas is released with a low valve opening pressure with little variation, and in the depressurized state, the plate-like elastic body 1 and the surroundings of the exhaust port 5 are surely in contact with each other, and high airtightness is achieved. Can be realized. Further, since the valve body is flat, the battery can be easily downsized.
第１図は本発明密閉形鉛蓄電池の排気部構造の要部断面
図、第２図は従来の排気部構造の要部断面図である。 1:板状弾性体、2:ガラス繊維シート 3:蓋、4:上蓋 5:排気口、6:突起 9:角部FIG. 1 is a sectional view of an essential part of an exhaust part structure of a sealed lead-acid battery of the present invention, and FIG. 2 is a sectional view of an essential part of a conventional exhaust part structure. 1: Plate-shaped elastic body, 2: Glass fiber sheet 3: Lid, 4: Top lid 5: Exhaust port, 6: Protrusion 9: Corner
Claims (1)
上蓋と、板状弾性体と、貫通穴を有するガラス繊維シー
トとを備え、 前記蓋の排気口の外側の角部は、Ｒ状に形成され、 前記上蓋の突起の先端は、曲面状に形成され、 前記板状弾性体で前記排気口の外側を覆い、該板状弾性
体の上に前記ガラス繊維シートを当接し、前記上蓋の突
起を用いて該ガラス繊維シートの貫通穴を通して該板状
弾性体を押圧している排気部構造を備えた密閉形鉛蓄電
池。1. A lid having an exhaust port, an upper lid having a projection on a lower portion thereof, a plate-like elastic body, and a glass fiber sheet having a through hole, wherein a corner portion outside the exhaust port of the lid is R-shaped. Formed in a curved shape, the tip of the protrusion of the upper lid is formed in a curved surface, and covers the outside of the exhaust port with the plate-like elastic body, abuts the glass fiber sheet on the plate-like elastic body, A sealed lead-acid battery having an exhaust part structure in which a protrusion of the upper lid is used to press the plate-like elastic body through a through hole of the glass fiber sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1303643A JPH088090B2 (en) | 1989-11-22 | 1989-11-22 | Sealed lead acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1303643A JPH088090B2 (en) | 1989-11-22 | 1989-11-22 | Sealed lead acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03165454A JPH03165454A (en) | 1991-07-17 |
| JPH088090B2 true JPH088090B2 (en) | 1996-01-29 |
Family
ID=17923469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1303643A Expired - Lifetime JPH088090B2 (en) | 1989-11-22 | 1989-11-22 | Sealed lead acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH088090B2 (en) |
-
1989
- 1989-11-22 JP JP1303643A patent/JPH088090B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03165454A (en) | 1991-07-17 |
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