JP2002008621A - Separator for sealed type lead-acid battery - Google Patents
Separator for sealed type lead-acid batteryInfo
- Publication number
- JP2002008621A JP2002008621A JP2000187014A JP2000187014A JP2002008621A JP 2002008621 A JP2002008621 A JP 2002008621A JP 2000187014 A JP2000187014 A JP 2000187014A JP 2000187014 A JP2000187014 A JP 2000187014A JP 2002008621 A JP2002008621 A JP 2002008621A
- Authority
- JP
- Japan
- Prior art keywords
- separator
- strength
- mass
- heat
- acid battery
- 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.)
- Granted
Links
Classifications
-
- 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
- Cell Separators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、密閉型鉛蓄電池用
セパレータに関する。[0001] The present invention relates to a separator for a sealed lead-acid battery.
【０００２】[0002]
【従来の技術】従来、この種の密閉型鉛蓄電池用セパレ
ータとして、例えば、特開平１１−２５０８８９号に開
示されるように、芯鞘複合繊維を用いた密度が０．３５
〜０．４５ｇ／ｃｍ３としたセパレータや、特開平１１
−１６５６０号に開示されるように、モノフィラメント
及びパルプ状有機繊維を使用したセパレータで、圧縮破
断強度および突刺強度を向上させたもの等が知られてい
る。2. Description of the Related Art Conventionally, as a separator for this type of sealed lead-acid battery, for example, as disclosed in Japanese Patent Application Laid-Open No. H11-250889, a density using a core-sheath composite fiber is 0.35.
To 0.45 g / cm 3 ,
As disclosed in Japanese Patent No. 16560, a separator using a monofilament and a pulp-like organic fiber, which has improved compressive rupture strength and piercing strength, and the like are known.
【０００３】[0003]
【発明が解決をしようとする課題】しかしながら、前記
特開平１１−２５０８８９号に開示のものは、密度を
０．３５〜０．４５ｇ／ｃｍ３としたセパレータである
ため、過剰な電解液が存在する液式鉛蓄電池には使用で
きるが、高密度のため電解液に制約を受ける密閉型鉛蓄
電池には不向きである。また、最近、電池特性を向上さ
せるためにセパレータと極板の薄肉化が進んでおり、し
かも、極板との密着性をよくするため、電池組み立て時
のセパレータへの加圧力を高くしているのが現状であ
る。従って、従来のセパレータでは、強度が弱いため、
電池の組立速度の制約を受けたり、セパレータの折り曲
げ部分の破れや極板のエッジによる破断等の弊害が多く
発生するという問題が生じている。特に、前述の厚さの
薄いセパレータでは影響が大きいものであった。また、
組み立てたとしても電解液を充填すると強度はより一層
弱くなり、組み立て効率の低下、初期短絡等の問題が発
生する。特に、折り曲げ部では電解液充填後に乾紙強度
を維持できず、電池寿命が短くなる問題が発生する。ま
た、特開平１１−１６５６０号に開示のものは、モノフ
ィラメントとパルプ状有機繊維を使用したセパレータで
あるため、圧縮破断強度および突刺強度を向上させたも
のであるが、セパレータ折り曲げ部の強度が弱いという
不都合を有するものである。そこで、本発明は、低密度
により電解液保持量を十分確保でき、かつ、乾紙と湿紙
間、或いは、折り曲げ部と他の部分間の破裂強度に差を
設けないようにして、セパレータの強度低下が少なく、
セパレータ折り曲げ部の極板による破れを防ぎ、電解液
充填後も強度低下を起こさず、極板の膨張および変形に
よる破れに耐えられ、所望により、袋加工も可能な密閉
型鉛蓄電池用セパレータを提供することを目的とするも
のである。However, since the separator disclosed in Japanese Patent Application Laid-Open No. H11-250889 is a separator having a density of 0.35 to 0.45 g / cm 3 , there is no excess electrolyte. It can be used for a liquid type lead-acid battery, but it is not suitable for a sealed lead-acid battery which is restricted by the electrolyte because of its high density. In recent years, the thickness of the separator and the electrode plate has been reduced in order to improve battery characteristics, and the pressure applied to the separator during battery assembly has been increased in order to improve the adhesion between the electrode and the electrode plate. is the current situation. Therefore, the strength of the conventional separator is weak,
There are problems that the assembly speed of the battery is restricted, and that many problems such as breakage of the bent portion of the separator and breakage due to the edge of the electrode plate occur. In particular, the above-mentioned thin separator has a large effect. Also,
Even when assembled, filling with an electrolytic solution further reduces the strength, and causes problems such as a decrease in assembly efficiency and an initial short circuit. Particularly, in the bent portion, the strength of the dry paper cannot be maintained after the filling of the electrolytic solution, which causes a problem that the battery life is shortened. Japanese Unexamined Patent Publication No. 11-16560 discloses a separator using monofilaments and pulp-like organic fibers, and thus has improved compression rupture strength and piercing strength. This has the disadvantage of Accordingly, the present invention provides a low-density electrolyte solution that can ensure a sufficient amount of retained electrolyte, and between the dry paper and the wet paper, or between the bent portion and other parts, so that there is no difference in the burst strength, the separator of the Less decrease in strength,
Provide a separator for a sealed lead-acid battery that prevents the bent portion of the separator from being broken by the electrode plate, does not cause a decrease in strength even after filling with the electrolytic solution, can withstand tearing due to expansion and deformation of the electrode plate, and can be bag-processed if desired. It is intended to do so.
【０００４】[0004]
【課題を解決するための手段】本発明の密閉型鉛蓄電池
用セパレータは、前記目的を達成するべく、請求項１記
載の通り、熱融着繊維を配合したセパレータにおいて、
折り曲げ部の湿紙の破裂強度が乾紙の破裂強度に対し
て、強度低下率が４０％以下であることを特徴とする。
このように、熱融着繊維によりセパレータ内の繊維同士
を接着、固定化させて折り曲げ部の破裂強度低下率が乾
紙に対して、４０％以下とする構成により、電池組み立
て時のセパレータ折り曲げ部の極板による破れや電解液
充填後の強度低下を起こさないようにしたものである。
また、請求項２記載の密閉型鉛蓄電池用セパレータは、
請求項１記載の密閉型鉛蓄電池用セパレータにおいて、
熱融着繊維量２〜５０質量％、無機粉体量０〜３５質量
％、ガラス繊維量１５〜９８質量％で構成されており、
密度が０．１５〜０．２５ｇ／ｃｍ３であることを特徴
とする。このように、密閉型鉛蓄電池に必要とされる電
解液を保持するため、熱融着繊維、ガラス繊維、必要に
応じてさらに無機粉体で構成し、電池寿命に影響する耐
酸性および耐酸化性を考慮して熱融着繊維量を２〜５０
質量％とするものである。また、熱融着繊維の繊維径は
約０．５〜３．３ｄｔｅｘ（デシテックス）、即ち、約
５〜５０μｍであり、ガラス繊維の繊維径は約０．６〜
４μｍであることから、熱融着繊維の配合により孔径が
大きくなるため、セパレータの空間を埋める無機粉体量
を０〜３５質量％とし、密度を０．１５〜０．２５ｇ／
ｃｍ３としたものである。また、請求項３記載の密閉型
鉛蓄電池用セパレータは、請求項１または２記載の密閉
型鉛蓄電池用セパレータにおいて、熱融着繊維とガラス
繊維、或いは、更に、無機粉体とで構成された材料を抄
造後、加圧乾燥またはキュアー後にプレスすることで得
られることを特徴とする。According to a first aspect of the present invention, there is provided a separator for a sealed lead-acid battery according to the first aspect of the present invention, wherein the separator contains heat-fused fibers.
The rupture strength of the wet paper at the bent portion is 40% or less of the rupture strength of the dry paper.
As described above, the configuration is such that the fibers in the separator are bonded and fixed by the heat-fused fibers so that the rupture strength reduction rate of the bent portion is 40% or less of the dry paper. This is to prevent the electrode plate from being torn or the strength from being reduced after filling with the electrolyte.
The sealed lead-acid battery separator according to claim 2 is
The sealed lead-acid battery separator according to claim 1,
It is composed of 2-50% by mass of heat-fused fiber, 0-35% by mass of inorganic powder, and 15-98% by mass of glass fiber,
The density is 0.15 to 0.25 g / cm 3 . As described above, in order to hold the electrolyte required for the sealed lead-acid battery, the battery is composed of heat-fusible fibers, glass fibers and, if necessary, inorganic powder, and has acid resistance and oxidation resistance that affect the battery life. Considering the heat-fusible fiber amount is 2-50
% By mass. The fiber diameter of the heat-fused fiber is about 0.5 to 3.3 dtex (decitex), that is, about 5 to 50 μm, and the fiber diameter of the glass fiber is about 0.6 to
Since the diameter is 4 μm, the pore diameter increases due to the blending of the heat-fusible fibers, the amount of inorganic powder filling the space of the separator is set to 0 to 35% by mass, and the density is set to 0.15 to 0.25 g /
cm 3 . The sealed lead-acid battery separator according to claim 3 is the sealed lead-acid battery separator according to claim 1 or 2, wherein the separator is made of heat-fused fibers and glass fibers, or further, inorganic powder. It is characterized in that it is obtained by pressing the paper after the material is made, dried under pressure or cured.
【０００５】[0005]
【発明の実施の形態】本発明の密閉型鉛蓄電池用セパレ
ータは、セパレータ折り曲げ部の電池組み立て時の極板
による破れや電解液充填後の強度低下を起こさないよう
に、熱融着繊維によりセパレータ内の繊維同士を接着、
固定化させることで、折り曲げ部の湿紙の破裂強度が乾
紙の破裂強度に対して、強度低下率を４０％以下とする
ように構成したものである。BEST MODE FOR CARRYING OUT THE INVENTION The separator for a sealed lead-acid battery according to the present invention is made of a heat-fusible fiber so that the bent portion of the separator is not broken by an electrode plate at the time of assembling the battery and the strength after filling with electrolyte is not reduced. Glue the fibers in each other,
By immobilizing, the rupture strength of the wet paper at the bent portion is such that the strength reduction rate is 40% or less of the rupture strength of the dry paper.
【０００６】また、本発明の密閉型鉛蓄電池用セパレー
タは、密閉型鉛蓄電池に必要とされる電解液を保持し、
セパレータ折り曲げ部の強度低下を防ぐため、熱融着繊
維とガラス繊維、必要に応じて、更に無機粉体とで構成
され、その中でもセパレータ内の熱融着繊維量を、電池
寿命に影響する耐酸性および耐酸化性を考慮し２〜５０
質量％とし、無機粉体量をセパレータの空間を埋め密度
を高くなることを考慮し０〜３５質量％とし、密度を
０．１５〜０．２５ｇ／ｃｍ３としたものである。Further, the sealed lead-acid battery separator of the present invention holds an electrolyte required for a sealed lead-acid battery,
In order to prevent a decrease in the strength of the bent portion of the separator, it is composed of heat-fused fibers and glass fibers, and, if necessary, inorganic powder. 2-50 in consideration of heat resistance and oxidation resistance
The weight is set to 0 to 35% by mass in consideration of filling the space of the separator and increasing the density, and the density is set to 0.15 to 0.25 g / cm 3 .
【０００７】また、単純に熱融着繊維を配合し乾燥させ
ただけでは熱融着繊維の特徴とする表面溶融による繊維
同士接着の強度向上効果が得られないので、本発明の密
閉型鉛蓄電池用セパレータでは、熱融着繊維による強度
向上効果をより出すため、ガラス繊維、熱融着繊維、必
要に応じ、更に無機粉体とで構成された材料を抄造後、
加圧乾燥またはキュアー後にプレスすることで、折り曲
げ部の湿紙の破裂強度が乾紙の破裂強度に対して、強度
低下率を４０％以下とする構成にすることができるもの
である。In addition, simply blending and drying the heat-fusible fibers does not provide the effect of improving the strength of fiber-to-fiber bonding by surface melting, which is a characteristic of the heat-fusible fibers. In the separator for, in order to further improve the strength of the heat-fused fiber, glass fiber, heat-fused fiber, if necessary, after forming a material composed of further inorganic powder,
By pressing after drying under pressure or curing, the burst strength of the wet paper at the bent portion can be reduced to 40% or less of the burst strength of the dry paper.
【０００８】また、本発明の密閉型鉛蓄電池用セパレー
タでは、熱融着繊維量を２〜５０質量％使用すること
で、従来から液式鉛蓄電池に使用されているポリエチレ
ンセパレータ（ポリエチレン樹脂と無機粉体から構成さ
れた溶融押出方式でつくられたセパレータ）と同様に袋
加工が可能となる。In the separator for a sealed lead-acid battery of the present invention, the amount of the heat-fused fiber is 2 to 50% by mass, so that the polyethylene separator (polyethylene resin and inorganic resin) conventionally used in a liquid lead-acid battery is used. Bag processing is possible in the same manner as in the case of a separator made of a powder and formed by a melt extrusion method.
【０００９】また、本発明の密閉型鉛蓄電池用セパレー
タでは、電池寿命をより長くするため、熱融着繊維とし
て平均繊維径０．５〜２．５ｄｔｅｘ（デシテック
ス）、繊維長３〜５ｍｍのものの使用が好ましい。材質
は有機繊維の中でも耐酸性および耐酸化性に優れたポリ
プロピレン−ポリエチレン、ポリエステル−ポリエチレ
ン、ポリエステル−ポリエステルの芯鞘構造で構成され
たものの使用が好ましい。尚、表面部の融点が２００℃
以上のものも存在するが、セパレータ製造の容易さおよ
び価格の点から表面部の融点が１１０、１３０、１５
０、１８０℃程度のものの使用でも構わない。[0009] In the sealed lead-acid battery separator of the present invention, in order to prolong the battery life, the heat-fused fibers having an average fiber diameter of 0.5 to 2.5 dtex (decitex) and a fiber length of 3 to 5 mm are used. Use is preferred. It is preferable to use a material having a core-sheath structure of polypropylene-polyethylene, polyester-polyethylene, or polyester-polyester having excellent acid resistance and oxidation resistance among organic fibers. The melting point of the surface is 200 ° C.
Although there are the above-mentioned ones, the melting point of the surface portion is 110, 130, 15 from the viewpoint of easiness of manufacturing the separator and the price.
A temperature of about 0 or 180 ° C. may be used.
【００１０】無機粉体としては、材質はシリカで、平均
粒子径が５〜１１μｍ程度のものの使用が好ましい。As the inorganic powder, it is preferable to use a material made of silica and having an average particle diameter of about 5 to 11 μm.
【００１１】また、ガラス繊維としては、組成はＣガラ
スで、平均繊維径が約０．５〜４μｍのものの使用が好
ましい。As the glass fiber, it is preferable to use a glass fiber having a composition of C glass and an average fiber diameter of about 0.5 to 4 μm.
【００１２】[0012]
【実施例】次ぎに、本発明の密閉型鉛蓄電池用セパレー
タの実施例を比較例と共に説明する。 （実施例１）平均繊維径０．６μｍのＣガラス組成のガ
ラス繊維１５質量％、平均繊維径２．２ｄｔｅｘ（デシ
テックス）、平均繊維長５ｍｍのポリエステル−ポリエ
ステルの芯鞘構造の熱融着繊維５０質量％、材質がシリ
カで平均粒子径６〜１０μｍの無機粉体３５質量％を中
性抄造にて抄紙して、厚さ１．００ｍｍ、密度０．２５
ｇ／ｃｍ３の密閉型鉛蓄電池用セパレータを得た。Next, examples of the separator for a sealed lead-acid battery according to the present invention will be described together with comparative examples. (Example 1) Heat-fused fiber 50 having a polyester / polyester core-sheath structure having an average fiber diameter of 0.6 μm, a glass fiber of C glass composition of 15% by mass, an average fiber diameter of 2.2 dtex (decitex), and an average fiber length of 5 mm. 35% by mass of an inorganic powder having an average particle diameter of 6 to 10 μm made of silica and having a thickness of 1.00 mm and a density of 0.25
g / cm 3 of the sealed lead-acid battery separator was obtained.
【００１３】（実施例２）平均繊維径０．６μｍのＣガ
ラス組成のガラス繊維５５質量％、平均繊維径２．２ｄ
ｔｅｘ（デシテックス）、平均繊維長５ｍｍのポリエス
テル−ポリエステルの芯鞘構造の熱融着繊維３０質量
％、材質がシリカで平均粒子径６〜１０μｍの無機粉体
１５質量％を中性抄造にて抄紙して、厚さ１．０２ｍ
ｍ、密度０．２２ｇ／ｃｍ３の密閉型鉛蓄電池用セパレ
ータを得た。(Example 2) 55% by mass of glass fiber of C glass composition having an average fiber diameter of 0.6 μm, and an average fiber diameter of 2.2 d
tex (decitex), 30% by mass of a heat-fused fiber having a core-sheath structure of polyester-polyester having an average fiber length of 5 mm, and 15% by mass of inorganic powder made of silica and having an average particle diameter of 6 to 10 μm by neutral papermaking. And the thickness is 1.02m
m, a separator for a sealed lead-acid battery having a density of 0.22 g / cm 3 was obtained.
【００１４】（実施例３）平均繊維径０．６μｍのＣガ
ラス組成のガラス繊維９７質量％、平均繊維径２．２ｄ
ｔｅｘ（デシテックス）、平均繊維長５ｍｍのポリエス
テル−ポリエステルの芯鞘構造の熱融着繊維３質量％を
中性抄造にて抄紙して、厚さ１．０１ｍｍ、密度０．１
５ｇ／ｃｍ３の密閉型鉛蓄電池用セパレータを得た。(Example 3) 97% by mass of glass fiber of C glass composition having an average fiber diameter of 0.6 μm, average fiber diameter of 2.2 d
tex (decitex), 3% by mass of heat-fused fiber having a core-sheath structure of polyester-polyester having an average fiber length of 5 mm was made into a paper by neutral papermaking to have a thickness of 1.01 mm and a density of 0.1.
A sealed lead-acid battery separator of 5 g / cm 3 was obtained.
【００１５】（実施例４）平均繊維径０．６μｍのＣガ
ラス組成のガラス繊維９８質量％、平均繊維径２．２ｄ
ｔｅｘ（デシテックス）、平均繊維長５ｍｍのポリエス
テル−ポリエステルの芯鞘構造の熱融着繊維２質量％を
中性抄造にて抄紙して、厚さ１．００ｍｍ、密度０．１
５ｇ／ｃｍ３の密閉型鉛蓄電池用セパレータを得た。(Example 4) 98% by mass of glass fiber of C glass composition having an average fiber diameter of 0.6 μm, average fiber diameter of 2.2 d
tex (decitex), 2% by mass of heat-fused fiber having a core-sheath structure of polyester-polyester having an average fiber length of 5 mm is made into a paper by neutral papermaking, and has a thickness of 1.00 mm and a density of 0.1.
A sealed lead-acid battery separator of 5 g / cm 3 was obtained.
【００１６】（実施例５）平均繊維径０．６μｍのＣガ
ラス組成のガラス繊維９８質量％、平均繊維径２．２ｄ
ｔｅｘ（デシテックス）、平均繊維長５ｍｍのポリエス
テル−ポリエステルの芯鞘構造の熱融着繊維２質量％を
中性抄造にて抄紙し、加熱プレスすることで、厚さ１．
００ｍｍ、密度０．１５ｇ／ｃｍ３の密閉型鉛蓄電池用
セパレータを得た。(Example 5) 98% by mass of glass fiber of C glass composition having an average fiber diameter of 0.6 μm, average fiber diameter of 2.2 d
tex (decitex), 2% by mass of a heat-fused fiber having a core-sheath structure of polyester-polyester having an average fiber length of 5 mm is formed into a paper by neutral papermaking and heated to a thickness of 1.
A sealed lead storage battery separator having a thickness of 00 mm and a density of 0.15 g / cm 3 was obtained.
【００１７】（比較例１）平均繊維径０．６μｍのＣガ
ラス組成のガラス繊維９９質量％、平均繊維径２．２ｄ
ｔｅｘ（デシテックス）、平均繊維長５ｍｍのポリエス
テル−ポリエステルの芯鞘構造の熱融着繊維１質量％を
中性抄造にて抄紙して、厚さ１．００ｍｍ、密度０．１
４ｇ／ｃｍ３の密閉型鉛蓄電池用セパレータを得た。Comparative Example 1 99% by mass of glass fiber of C glass composition having an average fiber diameter of 0.6 μm and an average fiber diameter of 2.2 d
tex (decitex), 1% by mass of heat-fused fiber having a core-in-sheath structure of polyester-polyester having an average fiber length of 5 mm was formed by neutral papermaking to a thickness of 1.00 mm and a density of 0.1%.
A sealed lead-acid battery separator of 4 g / cm 3 was obtained.
【００１８】（比較例２）平均繊維径０．６μｍのＣガ
ラス組成のガラス繊維１００質量％を中性抄造にて抄紙
して、厚さ１．０２ｍｍ、密度０．１４ｇ／ｃｍ３の密
閉型鉛蓄電池用セパレータを得た。(Comparative Example 2) 100% by mass of a glass fiber having a C glass composition having an average fiber diameter of 0.6 μm was made by neutral papermaking to form a closed mold having a thickness of 1.02 mm and a density of 0.14 g / cm 3 . A separator for a lead storage battery was obtained.
【００１９】（比較例３）平均繊維径０．６μｍのＣガ
ラス組成のガラス繊維７０質量％、平均繊維径１．７ｄ
ｔｅｘ（デシテックス）、平均繊維長５ｍｍの材質がポ
リエステルのモノフィラメント繊維１５質量％、濾水度
３．５ｓｅｃ／ｇ、平均繊維長１ｍｍの材質がポリエチ
レンのパルプ状繊維１５質量％を中性抄造にて抄紙し
て、厚さ１．０３ｍｍ、密度０．１８ｇ／ｃｍ３の密閉
型鉛蓄電池用セパレータを得た。(Comparative Example 3) 70% by mass of glass fiber of C glass composition having an average fiber diameter of 0.6 μm, and an average fiber diameter of 1.7 d
tex (decitex), a material having an average fiber length of 5 mm is a polyester monofilament fiber of 15% by mass, a freeness of 3.5 sec / g, and a material having an average fiber length of 1 mm is a pulp fiber of polyethylene having a mass of 15% by neutral papermaking. Papermaking was performed to obtain a sealed lead storage battery separator having a thickness of 1.03 mm and a density of 0.18 g / cm 3 .
【００２０】次に、前記実施例１〜５および比較例１〜
３の各セパレータの特性試験を行い、その結果を表１に
示した。Next, Examples 1 to 5 and Comparative Examples 1 to 5 were used.
A characteristic test of each of the separators No. 3 was performed, and the results are shown in Table 1.
【００２１】[0021]
【表１】 [Table 1]
【００２２】尚、表１中の強度低下率については、次ぎ
のような値を示すものとした。 強度低下率（％）＝（乾紙折り曲げ部破裂強度―湿紙折
り曲げ部破裂強度）／（乾紙折り曲げ部破裂強度）×１
００Incidentally, the strength reduction rate in Table 1 shows the following values. Strength reduction rate (%) = (Break strength of dry paper folded part-burst strength of wet paper folded part) / (burst strength of dry paper folded part) x 1
00
【００２３】尚、前記破裂強度はＪＩＳ Ｐ ８１３４
に準じて測定を行った。また、乾紙は乾燥させた試料
を、湿紙は試料を純水に１分間浸漬させ表面の純水を軽
くふき取ったもの、さらにこれらの試料を折り曲げたも
のを折り曲げ部の試料とした。Incidentally, the burst strength is JIS P 8134.
The measurement was carried out according to the following. The dried paper was a dried sample, the wet paper was a sample obtained by immersing a sample in pure water for 1 minute and gently wiping the pure water on the surface, and further bending these samples to obtain a bent portion sample.
【００２４】前記表１から明らかなように、実施例１乃
至５のように熱融着繊維を２質量％以上配合することで
セパレータ折り曲げ部の強度低下を防止することができ
る。さらに、実施例４、５のように、プレス無しでは８
Ｎ・ｃｍでもプレス有りにより１０Ｎ・ｃｍと強度を向
上させることができることが確認できた。また、セパレ
ータの袋加工が可能であった。As is clear from Table 1, by blending 2% by mass or more of the heat-fusible fiber as in Examples 1 to 5, it is possible to prevent a decrease in the strength of the bent portion of the separator. Further, as in Examples 4 and 5, without press, 8
It was confirmed that the strength can be improved to 10 N · cm even with N · cm by the presence of the press. In addition, bag processing of the separator was possible.
【００２５】[0025]
【発明の効果】以上、説明した通り、本発明によれば、
次のような効果が得られる。 １）セパレータ折り曲げ部の破裂強度の湿紙時の低下を
抑制することで、極板の膨張および変形による破れに耐
えられ、電解液充填後も強度低下を起こさない。 ２）熱融着繊維を使用することで袋加工可能であり、様
々な使用電池に対応できる。 ３）プレスにより低密度セパレータであっても、セパレ
ータ折り曲げ部の湿紙時の破裂強度を確保できる。As described above, according to the present invention,
The following effects can be obtained. 1) By suppressing the reduction in the burst strength of the folded portion of the separator when wet paper is used, the separator can withstand rupture due to expansion and deformation of the electrode plate, and the strength does not decrease even after filling with the electrolytic solution. 2) Bag processing is possible by using heat-fused fibers, and it can be used for various types of batteries. 3) Even if the separator is a low-density separator, the burst strength of the folded portion of the separator at the time of wet paper can be ensured by pressing.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井本 春二 岐阜県不破郡垂井町630 日本無機株式会 社垂井工場内 (72)発明者 川地 正浩 岐阜県不破郡垂井町630 日本無機株式会 社垂井工場内 Ｆターム(参考） 5H021 BB02 BB08 BB13 CC01 EE04 EE08 EE23 EE28 HH01 HH05 HH06 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Haruji Imoto 630 Tarui-cho, Fuwa-gun, Gifu Prefecture Inside the Inorganic Company, Ltd. F-term in Tarui factory (reference) 5H021 BB02 BB08 BB13 CC01 EE04 EE08 EE23 EE28 HH01 HH05 HH06
Claims (3)
て、折り曲げ部の湿紙の破裂強度が乾紙の破裂強度に対
して、強度低下率が４０％以下であることを特徴とする
密閉型鉛蓄電池用セパレータ。1. A closed type lead in which a rupture strength of a wet paper at a bent portion is 40% or less of a rupture strength of a dry paper in a separator containing heat-fused fibers. Storage battery separator.
量０〜３５質量％、ガラス繊維量１５〜９８質量％で構
成されており、密度が０．１５〜０．２５ｇ／ｃｍ３で
あることを特徴とする請求項１記載の密閉型鉛蓄電池用
セパレータ。2. The composition comprises 2 to 50% by mass of a heat-fused fiber, 0 to 35% by mass of an inorganic powder, and 15 to 98% by mass of a glass fiber, and has a density of 0.15 to 0.25 g / The sealed lead storage battery separator according to claim 1, wherein the separator is cm 3 .
に、無機粉体とで構成された材料を抄造後、加圧乾燥ま
たはキュアー後にプレスすることで得られる請求項１ま
たは２記載の密閉型鉛蓄電池用セパレータ。3. The hermetic seal according to claim 1, which is obtained by press-forming after press-drying or curing after forming a material composed of heat-fused fiber and glass fiber or further inorganic powder. Type separator for lead-acid batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000187014A JP4812924B2 (en) | 2000-06-21 | 2000-06-21 | Sealed separator for sealed lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000187014A JP4812924B2 (en) | 2000-06-21 | 2000-06-21 | Sealed separator for sealed lead-acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002008621A true JP2002008621A (en) | 2002-01-11 |
| JP4812924B2 JP4812924B2 (en) | 2011-11-09 |
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ID=18687076
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000187014A Expired - Lifetime JP4812924B2 (en) | 2000-06-21 | 2000-06-21 | Sealed separator for sealed lead-acid battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013008454A1 (en) * | 2011-07-11 | 2013-01-17 | パナソニック株式会社 | Lead storage cell |
| JP2021036537A (en) * | 2016-09-01 | 2021-03-04 | 北越コーポレーション株式会社 | Glass fiber sheet for sealed type lead storage battery separator, sealed type lead storage battery separator, and method for manufacturing glass fiber sheet for sealed type lead storage battery separator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938126A (en) * | 1972-08-19 | 1974-04-09 | ||
| JPH0555977B2 (en) * | 1986-05-30 | 1993-08-18 | Nippon Sheet Glass Co Ltd | |
| JPH06176749A (en) * | 1992-12-01 | 1994-06-24 | Nippon Muki Co Ltd | Bag-shape separator for lead-acid battery |
| JPH08195194A (en) * | 1995-01-18 | 1996-07-30 | Nippon Muki Co Ltd | Separator for sealed lead-acid battery |
-
2000
- 2000-06-21 JP JP2000187014A patent/JP4812924B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4938126A (en) * | 1972-08-19 | 1974-04-09 | ||
| JPH0555977B2 (en) * | 1986-05-30 | 1993-08-18 | Nippon Sheet Glass Co Ltd | |
| JPH06176749A (en) * | 1992-12-01 | 1994-06-24 | Nippon Muki Co Ltd | Bag-shape separator for lead-acid battery |
| JPH08195194A (en) * | 1995-01-18 | 1996-07-30 | Nippon Muki Co Ltd | Separator for sealed lead-acid battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013008454A1 (en) * | 2011-07-11 | 2013-01-17 | パナソニック株式会社 | Lead storage cell |
| JPWO2013008454A1 (en) * | 2011-07-11 | 2015-02-23 | パナソニック株式会社 | Lead acid battery |
| JP2021036537A (en) * | 2016-09-01 | 2021-03-04 | 北越コーポレーション株式会社 | Glass fiber sheet for sealed type lead storage battery separator, sealed type lead storage battery separator, and method for manufacturing glass fiber sheet for sealed type lead storage battery separator |
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| Publication number | Publication date |
|---|---|
| JP4812924B2 (en) | 2011-11-09 |
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