JPH0817419A - Separator web for battery - Google Patents

Separator web for battery

Info

Publication number
JPH0817419A
JPH0817419A JP6147333A JP14733394A JPH0817419A JP H0817419 A JPH0817419 A JP H0817419A JP 6147333 A JP6147333 A JP 6147333A JP 14733394 A JP14733394 A JP 14733394A JP H0817419 A JPH0817419 A JP H0817419A
Authority
JP
Japan
Prior art keywords
separator
length
original fabric
overlapping
shaped
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.)
Pending
Application number
JP6147333A
Other languages
Japanese (ja)
Inventor
Akira Ikenotani
晃 池ノ谷
Osamu Yamaguchi
修 山口
Shinsuke Takahashi
伸典 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Shin Kobe Electric Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shin Kobe Electric Machinery Co Ltd filed Critical Shin Kobe Electric Machinery Co Ltd
Priority to JP6147333A priority Critical patent/JPH0817419A/en
Publication of JPH0817419A publication Critical patent/JPH0817419A/en
Pending legal-status Critical Current

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

PURPOSE:To generate U-shaped bending improved even when a part of overlapping an end part of a web is included in a range of length in which a part of the U-shaped bending is formed, when a separator cut into the prescribed dimension is bent into a U shape, in the separator web for a battery connecting the end part overlapped with each other of the first/second webs further formed in to along scale. CONSTITUTION:The first/second separator webs 1, 2 are prepared, to prevent setting an angle theta, formed by respective end edges of the webs with a width direction of a separator, to zero. The webs are connected by overlapping the respective end parts with each other. When an overlapped part of the first/ second weds is included in a range of length L1 in which a U-shaped bending part is formed, so as to prevent including this overlapped part over a total unit in a width direction of the separator, an end edge angle theta of the web and an overlapped length L2 in the end part are set.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、Ｕ字状に折り曲げるセ
パレータのための長尺の電池用セパレータ原反に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long battery separator raw material for a U-shaped separator.

【０００２】[0002]

【従来の技術】鉛蓄電池の極板群は、正極板と負極板の
間にセパレータを介在させて構成される。前記セパレー
タを介在させた構成としては、単に平板状のセパレータ
を介在させるもののほかに、Ｕ字状に折り曲げたセパレ
ータに極板を挟んだり、さらには、極板を挟んだＵ字状
のセパレータの側部を接合して袋状にしたものがある。
セパレータ側部の接合には、例えば、Ｕ字状に折り曲げ
て重ね合わせたセパレータの側部を両面からギアで噛み
込んで連続した凹凸を形成し、この凹凸の噛み合いで接
合を行なう技術（メカニカルシール）が採用されてい
る。図３は、所定長さＬのセパレータ１０を中央でＵ字
状に折り曲げ、内側に極板１１を挟んで、セパレータの
両側部をメカニカルシールした状態を示している。１２
はメカニカルシール部である。この場合、Ｕ字状の折り
曲げ部分は、ある程度の長さＬ1が必要である。2. Description of the Related Art A lead-acid battery electrode plate group is constructed by interposing a separator between a positive electrode plate and a negative electrode plate. As the configuration in which the separator is interposed, in addition to the one in which a flat plate-shaped separator is simply interposed, a polar plate is sandwiched between U-shaped separators, and further, a U-shaped separator in which the polar plate is sandwiched is used. There is a bag-shaped product in which the sides are joined together.
For joining the side portions of the separator, for example, a technique is used in which the side portions of the separators, which are folded into a U shape and overlapped with each other, are engaged with gears from both sides to form continuous concavities and convexities, and the concavities and convexities are meshed together (mechanical seal). ) Has been adopted. FIG. 3 shows a state in which a separator 10 having a predetermined length L is bent in a U shape at the center, and an electrode plate 11 is sandwiched inside, and both sides of the separator are mechanically sealed. 12
Is a mechanical seal part. In this case, the U-shaped bent portion needs to have a certain length L 1 .

【０００３】上記のように、Ｕ字状に折り曲げたり、さ
らには袋状にするセパレータは、極板群の製造工程にお
いて帯状で長尺のセパレータ原反を所定寸法に裁断して
供給される。そして、セパレータ原反は巻物にして製造
ラインに供給されるが、その供給回数を減らして生産性
の向上を図るために、セパレータ原反の巻物の長さをで
きるだけ長くすることが行なわれている。セパレータ原
反の巻物の長さを長くするためには、原反同士を接合す
る必要がある。図４は、従来行なわれている原反同士の
接合を示している。同図（ｂ）に示すように、帯状の第
１の原反１と帯状の第２の原反２の端部を所定幅Ｌ2で
重ね合わせて接合するが、同図（ａ）に示すように、第
１の原反１と第２の原反２の端縁は原反の長手方向と直
角に形成されている。セパレータがポリエチレン製の場
合は、超音波溶着等により接合が行なわれる。このよう
に、原反同士を接合してさらに長尺にしたセパレータ原
反を所定寸法に裁断して個々のセパレータとして供給
し、これをＵ字状に折り曲げて使用する場合、第１の原
反と第２の原反の重ね合わせ部が、Ｕ字状の折り曲げ部
分を形成する長さＬ1の範囲に含まれることになると次
のような問題がある。すなわち、第１の原反と第２の原
反の重ね合わせ部は厚さが他の部分の２倍あり、このよ
うな厚さの厚い部分がセパレータの折り曲げ部分の幅方
向全体にわたって存在することになるので、折り曲げた
セパレータの側部同士をきちんと一致させた折り曲げが
難しくなる。図５に示すように、折り曲げたセパレータ
１０の上縁において、合わせたセパレータの側部の位置
が寸法αだけずれてしまう。As described above, the separator that is bent into a U shape or is formed into a bag shape is supplied by cutting a strip-shaped long separator raw material into a predetermined size in the manufacturing process of the electrode plate group. Then, the separator raw material is rolled and supplied to the production line, but in order to reduce the number of times of supply and improve productivity, the length of the separator raw material winding is made as long as possible. . In order to increase the length of the roll of separator raw material, it is necessary to join the raw materials. FIG. 4 shows the conventional joining of the original fabrics. As shown in FIG. 3B, the end portions of the strip-shaped first raw fabric 1 and the strip-shaped second raw fabric 2 are superposed and joined to each other with a predetermined width L 2 , but shown in FIG. As described above, the edges of the first original fabric 1 and the second original fabric 2 are formed at right angles to the longitudinal direction of the original fabric. When the separator is made of polyethylene, it is joined by ultrasonic welding or the like. In this way, when the separator webs that are made longer by joining the webs are cut into a predetermined size and supplied as individual separators, and when they are bent and used in a U-shape, the first web If the overlapping portion of the second original fabric and the second original fabric is included in the range of the length L 1 forming the U-shaped bent portion, the following problem occurs. That is, the overlapping portion of the first and second webs is twice as thick as the other portions, and such a thick portion exists over the entire width direction of the folded portion of the separator. Therefore, it becomes difficult to bend the side portions of the folded separator so that they are properly aligned with each other. As shown in FIG. 5, at the upper edge of the folded separator 10, the position of the side portion of the combined separator is displaced by the dimension α.

【０００４】[0004]

【発明が解決しようとする課題】上述のように、従来の
第１の原反と第２の原反を接合することによりさらに長
尺にしたセパレータ原反を所定寸法の個々のセパレータ
に裁断し、これをＵ字状に折り曲げて使用する場合、Ｕ
字状に折り曲げる部分に第１の原反と第２の原反の端部
の重ね合わせ部が含まれると、良好な状態でＵ字状に折
り曲げるのが難しい。図５に示したように、折り曲げた
セパレータの側部の位置がずれたままメカニカルシール
等の接合を行なっても接合部分の面積が小さくなるので
所期の接合強度を得られない（図５おいて、メカニカル
シール部１２のうち、１２’の部分は、折り曲げたセパ
レータが重なってないために、接合されていない部分を
示している）。本発明が解決しようとする課題は、第１
の原反と第２の原反の端部を重ね合わせて接合すること
によりさらに長尺にした電池用セパレータ原反におい
て、所定寸法に裁断したセパレータをＵ字状に折り曲げ
るときに、Ｕ字状の折り曲げ部分を形成する長さＬ1の
範囲に原反の端部の重ね合わせ部が含まれていても、良
好に折り曲げができるようにすることである。As described above, the longer separator raw material is cut into individual separators having a predetermined size by joining the conventional first original material and the second original material. , When using it by bending it into a U shape, U
When the portion to be bent in the shape of a letter includes the overlapping portion of the ends of the first material and the second material, it is difficult to fold it in a U shape in good condition. As shown in FIG. 5, even if a mechanical seal or the like is joined while the side portions of the folded separator are displaced, the area of the joined portion becomes small and the desired joining strength cannot be obtained (see FIG. The mechanical seal portion 12 has a portion 12 'which is not joined because the folded separators do not overlap each other. The problem to be solved by the present invention is
In a battery separator original fabric that is made longer by overlapping and joining the ends of the original fabric and the second original fabric, when the separator cut into a predetermined size is bent into a U-shape, Even if the overlapping portion of the end portion of the original fabric is included in the range of the length L 1 forming the bent portion, the folding can be performed well.

【０００５】[0005]

【課題を解決するための手段】上記の課題を解決するた
めに、本発明に係るＵ字状に折り曲げるセパレータのた
めのセパレータ原反は、帯状の第１の原反と帯状の第２
の原反の端部を重ね合わせて接合することによりさらに
長尺の原反としたものにおいて、第１の原反と第２の原
反の前記重ね合わせ部における端縁を、原反の長手方向
とは直角をなさない方向に形成する。当該方向は、第１
の原反と第２の原反で同じとする。そして、前記Ｕ字状
の折り曲げ部分を形成する長さＬ1の範囲に前記第１の
原反と第２の原反の重ね合わせ部が含まれるときに、セ
パレータの幅方向全体にわたって当該重ね合わせ部が含
まれないように、原反の端縁の方向と端部の重ね合わせ
長さＬ2を設定したことを特徴とする。原反の端縁の方
向と端部の重ね合わせ長さＬ2は、Ｕ字状の折り曲げ部
分を形成する長さＬ1の範囲に含まれる第１の原反と第
２の原反の重ね合わせ部の面積が、最大でも長さＬ1の
範囲の面積の２５％以下となるように設定するのが好ま
しい。In order to solve the above problems, a separator raw material for a U-shaped folding separator according to the present invention is a first belt-shaped raw material and a second belt-shaped raw material.
In the one having a longer length by overlapping and joining the ends of the original fabric, the edges of the first original fabric and the second original fabric in the overlapped portion are made to be the longitudinal length of the original fabric. Form in a direction that is not perpendicular to the direction. The direction is first
The same applies to the original fabric and the second fabric. When the overlapping portion of the first original fabric and the second original fabric is included in the range of the length L 1 forming the U-shaped bent portion, the overlapping is performed over the entire width direction of the separator. It is characterized in that the direction of the edge of the original fabric and the overlapping length L 2 of the edge are set so that no portion is included. The direction L of the edge of the material and the overlapping length L 2 of the end are included in the range of the length L 1 forming the U-shaped bent portion. The area of the mating portion is preferably set to be 25% or less of the area in the range of the length L 1 at the maximum.

【０００６】[0006]

【作用】上記の構成によれば、Ｕ字状の折り曲げ部分を
形成する長さＬ1の範囲に第１の原反と第２の原反の重
ね合わせ部が含まれることとなっても、セパレータの幅
方向全体にわたって当該重ね合わせ部が存在しない。ま
た、当該重ね合わせ部がＵ字状の折り曲げ部分を形成す
る長さＬ1の範囲の面積に占める割合も少なくなる。こ
れによって、折り曲げが容易になり位置ずれの少ない折
り曲げが可能になる。According to the above construction, even if the overlapping portion of the first original fabric and the second original fabric is included in the range of the length L 1 forming the U-shaped bent portion, The overlapping portion does not exist over the entire width direction of the separator. In addition, the ratio of the overlapped portion to the area of the range of the length L 1 forming the U-shaped bent portion also decreases. As a result, bending is facilitated, and bending with less displacement is possible.

【０００７】[0007]

【実施例】ポリエチレン製の第１のセパレータ原反１と
第２のセパレータ原反２を用意し、図１（ａ）に示すよ
うに、それぞれの端縁がセパレータの幅方向となす角θ
を種々設定した。そして、それぞれの端部を重ね合わせ
て超音波溶着により接合した。重ね合わせ長さＬ2は、
４mmに設定した。また、セパレータの幅Ｗは１５２mmで
ある。尚、角度θが０のときは、原反の長手方向と端縁
のなす角度は直角であり、従来技術による接合に相当す
る。上記原反から所定寸法に裁断したセパレータをＵ字
状に折り曲げるとき、図２に示すように、Ｕ字状の折り
曲げ部分を形成する長さＬ1の範囲に原反の重ね合わせ
部が含まれるように設定して、それぞれ１０個の試料に
ついて折り曲げ時の位置ずれ（図５に示した寸法α）の
程度を確認した。Ｕ字状の折り曲げ部分を形成する長さ
Ｌ1は、重ね合わせ長さＬ2と同寸の４mmである。表１
に、位置ずれの程度を、Ｕ字状の折り曲げ部分を形成す
る長さＬ1の範囲の面積Ａ（＝Ｌ1×Ｗ）に含まれる第１
の原反と第２の原反の重ね合わせ部の面積Ｂの割合（Ｂ
／Ａ）と共に示した。EXAMPLE A first separator raw fabric 1 and a second separator raw fabric 2 made of polyethylene were prepared, and as shown in FIG. 1 (a), an angle θ formed by each end edge with the width direction of the separator.
Was set variously. Then, the respective ends were superposed and joined by ultrasonic welding. The overlap length L 2 is
It was set to 4 mm. The width W of the separator is 152 mm. When the angle θ is 0, the angle between the longitudinal direction of the original fabric and the edge is a right angle, which corresponds to the joining by the conventional technique. When a separator cut into a predetermined size from the above-mentioned original fabric is bent into a U-shape, as shown in FIG. 2, the overlapping portion of the original fabric is included in the range of the length L 1 forming the U-shaped bent portion. With the above settings, the degree of positional deviation (dimension α shown in FIG. 5) during bending was confirmed for each of 10 samples. The length L 1 forming the U-shaped bent portion is 4 mm, which is the same as the overlapping length L 2 . Table 1
First , the degree of misalignment is included in the area A (= L 1 × W) in the range of the length L 1 forming the U-shaped bent portion.
Of the area B of the overlapping portion of the original fabric and the second original fabric (B
/ A).

【０００８】[0008]

【表１】 [Table 1]

【０００９】表１から、θを０より大きくすることによ
り位置ずれαを小さくできることが理解できる。そし
て、Ｂ／Ａが２５％以下のときの位置ずれ寸法αは、Ｂ
／Ａが０（Ｕ字状の折り曲げ部分に第１の原反と第２の
原反の重ね合わせ部が含まれない）のときの位置ずれ寸
法αと同等であった。このことは、特に、Ｂ／Ａを２５
％以下にすると、位置ずれによるメカニカルシールの不
良が０になる事を示している（上記従来例のメカニカル
シールの不良は４０％）。From Table 1, it can be understood that the position shift α can be reduced by making θ larger than 0. Then, when B / A is 25% or less, the positional deviation dimension α is B
It was equivalent to the positional deviation dimension α when / A was 0 (the U-shaped bent portion does not include the overlapping portion of the first and second original fabrics). This is especially true for B / A of 25
When the ratio is less than or equal to%, the mechanical seal defect due to the positional deviation becomes 0 (the mechanical seal defect of the conventional example is 40%).

【００１０】上記実施例では、重ね合わせ長さＬ2をＵ
字状の折り曲げ部分を形成する長さＬ1と同寸に設定し
たが、本発明はこれに限定されるものではない。原反の
端部の重ね合わせ部が、セパレータのＵ字状の折り曲げ
部分を形成する長さＬ1の範囲に含まれることとなった
ときに、重ね合わせ部がセパレータの幅方向全体にわた
って存在しないように、Ｕ字状の折り曲げ部分を形成す
る長さＬ1とセパレータの幅に応じて、重ね合わせ長さ
Ｌ2と角度θを適宜設定すればよい。In the above embodiment, the overlapping length L 2 is U
Although the length is set to be the same as the length L 1 forming the bent portion of the character, the present invention is not limited to this. When the overlapping portion at the end portion of the original fabric is included in the range of the length L 1 forming the U-shaped bent portion of the separator, the overlapping portion does not exist over the entire width direction of the separator. As described above, the overlapping length L 2 and the angle θ may be appropriately set according to the length L 1 forming the U-shaped bent portion and the width of the separator.

【００１１】[0011]

【発明の効果】上述のように、原反と原反の端部を重ね
合わせて接合し長尺にしたセパレータ原反において、所
定寸法に裁断したセパレータをＵ字状に折り曲げるとき
に、Ｕ字状の折り曲げ部分を形成する長さＬ1の範囲に
原反の端部の重ね合わせ部が含まれていても、当該重ね
合わせ部はセパレータの幅方向全体にわたって存在しな
いので、Ｕ字状の折り曲げを良好に行なうことができ
る。As described above, in the separator original fabric in which the original fabric and the end portions of the original fabric are overlapped and joined to each other to make a long length, when the separator cut into a predetermined size is bent into a U-shape, Even if the overlapping portion of the end portion of the original fabric is included in the range of the length L 1 forming the bent portion of the shape, since the overlapping portion does not exist in the entire width direction of the separator, the U-shaped bending portion is formed. Can be performed satisfactorily.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明に係る電池用セパレータ原反の説明図で
ある。FIG. 1 is an explanatory view of a raw battery separator sheet according to the present invention.

【図２】図１のセパレータ原反から所定寸法に裁断した
セパレータの平面図である。FIG. 2 is a plan view of a separator cut into a predetermined size from the separator raw fabric of FIG.

【図３】セパレータをＵ字状に折り曲げて袋状とする様
子を示す説明図である。FIG. 3 is an explanatory view showing a state where the separator is bent into a U shape to form a bag.

【図４】従来の電池用セパレータ原反の説明図である。FIG. 4 is an explanatory diagram of a conventional battery separator sheet.

【図５】従来の電池用セパレータ原反から所定寸法に裁
断したセパレータをＵ字状に折り曲げて袋状とした状態
を示す説明図である。FIG. 5 is an explanatory diagram showing a state in which a conventional separator raw sheet for a battery is cut into a predetermined size and is folded into a U shape to form a bag.

【符号の説明】[Explanation of symbols]

１は第１の原反 ２は第２の原反 １０はセパレータ 1 is the first original 2 is the second original 10 is the separator

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】Ｕ字状に折り曲げるセパレータのための長
尺のセパレータ原反であって、帯状の第１の原反と帯状
の第２の原反の端部を重ね合わせて接合することにとよ
りさらに長尺の原反としたものにおいて、 第１の原反と第２の原反の前記重ね合わせ部における端
縁は原反の長手方向とは直角をなさない方向に形成して
あり、当該方向は第１の原反と第２の原反で同じであ
り、 前記Ｕ字状の折り曲げ部分を形成する長さＬ1の範囲に
前記第１の原反と第２の原反の重ね合わせ部が含まれる
ときに、セパレータの幅方向全体にわたって当該重ね合
わせ部が含まれないように、原反の端縁の方向と端部の
重ね合わせ長さＬ2が設定されていることを特徴とする
電池用セパレータ原反。1. A long separator raw material for a U-shaped separator, wherein the end portions of a belt-shaped first raw material and a belt-shaped second raw material are overlapped and joined. In the case of a longer original fabric, the edges of the first original fabric and the second original fabric in the overlapping portion are formed in a direction that is not perpendicular to the longitudinal direction of the original fabric. , The direction is the same for the first and second webs, and the direction of the first web and the second web is within the range of the length L 1 forming the U-shaped bent portion. When the overlapping portion is included, the direction of the edge of the original sheet and the overlapping length L 2 of the end portion are set so that the overlapping portion is not included over the entire width direction of the separator. Characteristic battery separator stock. 【請求項２】Ｕ字状の折り曲げ部分を形成する長さＬ1
の範囲に含まれる第１の原反と第２の原反の重ね合わせ
部の面積が、最大でも長さＬ1の範囲の面積の２５％以
下となるように、原反の端縁の方向と端部の重ね合わせ
長さＬ2が設定されていることを特徴とする請求項１記
載の電池用セパレータ原反。2. A length L 1 forming a U-shaped bent portion.
The direction of the edge of the original fabric so that the area of the overlapping portion of the first original fabric and the second original fabric included in the range is 25% or less of the area in the range of the length L 1 at the maximum. The stacking length L 2 of the end portion and the end portion is set, and the battery separator raw material according to claim 1.
JP6147333A 1994-06-29 1994-06-29 Separator web for battery Pending JPH0817419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6147333A JPH0817419A (en) 1994-06-29 1994-06-29 Separator web for battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6147333A JPH0817419A (en) 1994-06-29 1994-06-29 Separator web for battery

Publications (1)

Publication Number Publication Date
JPH0817419A true JPH0817419A (en) 1996-01-19

Family

ID=15427815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6147333A Pending JPH0817419A (en) 1994-06-29 1994-06-29 Separator web for battery

Country Status (1)

Country Link
JP (1) JPH0817419A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016056256A1 (en) * 2014-10-10 2016-04-14 住友化学株式会社 Manufacturing method for separator wound body for battery, separator wound body for battery, and apparatus for manufacturing separator wound body for battery

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016056256A1 (en) * 2014-10-10 2016-04-14 住友化学株式会社 Manufacturing method for separator wound body for battery, separator wound body for battery, and apparatus for manufacturing separator wound body for battery
KR20160054430A (en) * 2014-10-10 2016-05-16 스미또모 가가꾸 가부시키가이샤 Battery separator roll, and method and apparatus for producing same
US9786884B2 (en) 2014-10-10 2017-10-10 Sumitomo Chemical Company, Limited Method and apparatus for producing battery separator roll
US10411235B2 (en) 2014-10-10 2019-09-10 Sumitomo Chemical Company, Limited Method for stocking battery separator roll, method for producing same, method for carrying same, and carrier for same

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