JPH0760676B2 - Separator for sealed lead acid battery - Google Patents
Separator for sealed lead acid batteryInfo
- Publication number
- JPH0760676B2 JPH0760676B2 JP59217652A JP21765284A JPH0760676B2 JP H0760676 B2 JPH0760676 B2 JP H0760676B2 JP 59217652 A JP59217652 A JP 59217652A JP 21765284 A JP21765284 A JP 21765284A JP H0760676 B2 JPH0760676 B2 JP H0760676B2
- Authority
- JP
- Japan
- Prior art keywords
- separator
- acid battery
- sealed lead
- fiber
- electrode plate
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/431—Inorganic material
- H01M50/434—Ceramics
- H01M50/437—Glass
-
- 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
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、密閉型鉛蓄電池用セパレータに関するもので
ある。TECHNICAL FIELD The present invention relates to a sealed lead-acid battery separator.
従来例の構成とその問題点 ガラス繊維を主成分として抄造した従来の密閉型鉛蓄電
池用セパレータは、充分に電解液を保持し電極から発生
するガスの拡散を速やかにするために非常に細いガラス
繊維を用いることが一般的となっている。Structure of conventional example and its problems Conventional sealed lead-acid battery separators made from glass fiber as the main component are very thin glass in order to sufficiently hold the electrolytic solution and to quickly diffuse the gas generated from the electrodes. It is common to use fibers.
第１図は従来の密閉型鉛蓄電池の極板群の構成の一例を
示すものであり、１は微細ガラス繊維を用いたセパレー
タであり、2,3はそれぞれ正極板，負極板である。FIG. 1 shows an example of the construction of the electrode plate group of a conventional sealed lead-acid battery, 1 is a separator using fine glass fibers, and 2 and 3 are a positive electrode plate and a negative electrode plate, respectively.
以上のように構成された従来の密閉型鉛蓄電池の極板群
では、特に深度の大きい充放電を繰り返しているうち
に、その回数が増すと正極板の活物質が膨張し、セパレ
ータのわきからはみ出して、負極板と接触し、側部で短
絡することが寿命原因となる現象が、かなりの頻度で見
られた。In the electrode plate group of the conventional sealed lead-acid battery configured as described above, the active material of the positive electrode plate expands when the number of times increases, especially during repeated charging and discharging with a large depth, and from the side of the separator. The phenomenon that the life was caused by the protrusion, the contact with the negative electrode plate, and the short circuit at the side was frequently observed.
発明の目的 本発明は上記従来の問題点を解消するもので、充放電サ
イクル寿命の長い密閉型鉛蓄電池を得るためのセパレー
タを提供することを目的とする。An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a separator for obtaining a sealed lead acid battery having a long charge / discharge cycle life.
発明の構成 本発明の密閉型鉛蓄電池用セパレータは、前記の目的を
達成するため、耐酸性の高い熱可塑性の合成樹脂繊維を
主体とし、これに繊維径３μ以下のガラス繊維をセパレ
ータ全体の10wt％以上、25wt％以下の範囲で分散させた
１枚のフェルト状不織布を、極板を包むに足る大きさに
２つ折りにし、対向する左右の両端部を溶着して袋状と
したことを特徴とする。Configuration of the Invention In order to achieve the above-mentioned object, the sealed lead-acid battery separator of the present invention mainly comprises a synthetic resin fiber having high acid resistance and a thermoplastic resin fiber having a fiber diameter of 3 μ or less and 10 wt% of the entire separator. %, 25 wt% or less, one sheet of felt-like non-woven fabric is folded in half into a size enough to wrap the electrode plate, and the opposite left and right ends are welded together to form a bag. And
更にその熱可塑性樹脂繊維が全体の50wt％以上をしめ、
20Kg/dm2加圧時の厚さが、0.8〜3mmの範囲であることを
特徴とする。Furthermore, the thermoplastic resin fiber accounts for 50 wt% or more of the whole,
It is characterized in that the thickness when pressed at 20 kg / dm 2 is in the range of 0.8 to 3 mm.
実施例の説明 次に本発明の具体的な一実施例を図面と共に説明する。
第２図は本発明による密閉型鉛蓄電池の極板群の一例で
ある。４は強度を持たせるためアクリル繊維を10wt％、
バインダーとしてアクリル樹脂を5wt％、耐酸性の高い
熱可塑性の合成樹脂としてポリプロピレンの細い繊維を
70wt％含み、残りの15wt％が繊維径３μ以下のガラス繊
維であり、20Kg/dm2加圧時の厚さが1.2mmであるフェル
ト状不織布を用いたセパレータで正極板２を包むに足り
る大きさにＵ字状に２つ折りにしてある。５は対向する
左右の両端部を超音波溶着して袋状とした個所である。Description of Embodiments Next, a specific embodiment of the present invention will be described with reference to the drawings.
FIG. 2 is an example of an electrode plate group of the sealed lead acid battery according to the present invention. 4 is 10 wt% acrylic fiber to give strength,
Acrylic resin is 5 wt% as binder, and thin polypropylene fiber is used as thermoplastic resin with high acid resistance.
Enough to wrap the positive electrode plate 2 with a separator using a felt-like non-woven fabric that contains 70 wt% and the remaining 15 wt% is glass fiber with a fiber diameter of 3μ or less, and has a thickness of 1.2 mm when pressed at 20 Kg / dm 2. In addition, it is folded in two in a U shape. Reference numeral 5 denotes a bag-shaped portion formed by ultrasonically welding opposite left and right ends.
本発明によるセパレータＡ、および従来のガラス繊維か
らなるセパレータＢを用いて電圧6V容量6.5Ahの電池A,B
を製作し、サイクル寿命試験を行った。Using the separator A according to the present invention and the conventional separator B made of glass fiber, batteries A and B having a voltage of 6 V and a capacity of 6.5 Ah
Was manufactured and a cycle life test was conducted.
第３図は、電池A,Bを25℃において電圧7.36V、最大電流
2.6Aにて６時間充電、電流1.375A相当の定抵抗放電を端
子電圧4.5Vとなるまで行うことを１サイクルとしたサイ
クル寿命試験の結果を示したものである。第３図からも
明らかな様に従来の方法で製造した電池Ｂが側部の活物
質のはみだしにより短絡して寿命となった550サイクル
目において、本発明による電池Ａは容量劣化が起こって
いない。なお熱可塑性樹脂繊維が50wt％以下の場合に
は、超音波による溶着ができない。Figure 3 shows batteries A and B at 25 ° C with voltage 7.36V and maximum current
This is the result of a cycle life test in which charging was performed at 2.6 A for 6 hours, and constant resistance discharge corresponding to a current of 1.375 A was performed until the terminal voltage became 4.5 V as one cycle. As is clear from FIG. 3, at the 550th cycle in which the battery B manufactured by the conventional method was short-circuited due to the protrusion of the active material on the side to reach the end of life, the battery A according to the present invention had no capacity deterioration. . If the thermoplastic resin fiber content is 50 wt% or less, ultrasonic welding cannot be performed.
また20Kg/dm2加圧時の厚さが、0.8mmの場合には電解液
を充分保持することができないし、3mm以上になると濡
れた時の厚みが薄くなる割合が大きく極板群に圧力がか
からず容量ができない。Also, if the thickness when pressing 20 kg / dm 2 is 0.8 mm, the electrolytic solution cannot be sufficiently retained, and if it is 3 mm or more, the thickness when wetting becomes thin and the electrode plate group has a large proportion. It doesn't take much and the capacity is not available.
さらに繊維径が３μ以下のガラス繊維が10wt％以上含ま
れなければ最大孔径が大きくなり充放電を繰り返した際
に正極活物質がセパレータを通りぬけて短絡する危険性
が大きく、25wt％以上の場合はガラスの熱伝導率が低い
ため溶着が困難になる場合がある。従って、熱可塑性樹
脂繊維は50wt％以上、20Kg/dm2加圧時の厚さは、0.8〜3
mm、繊維径３μ以下のガラス繊維が10wt％以上25wt％以
下含まれていることが好ましい。In addition, if the glass fiber with a fiber diameter of 3μ or less is not included in 10 wt% or more, the maximum pore size becomes large, and there is a high risk that the positive electrode active material will pass through the separator and short-circuit when charging and discharging are repeated. May have difficulty in welding due to the low thermal conductivity of glass. Therefore, the thermoplastic resin fiber is 50 wt% or more, and the thickness at the time of pressurizing 20 Kg / dm 2 is 0.8 to 3
It is preferable that glass fibers having a diameter of 3 μm and a fiber diameter of 10 μm or more and 25 wt% or less are contained.
発明の効果 以上のように本発明は、耐酸性の高い熱可塑性の合成樹
脂繊維を主体とし、これに繊維径３μ以下のガラス繊維
をセパレータ全体の10wt％以上、25wt％以下の範囲で分
散させた１枚のフェルト状不織布を、極板を包むに足る
大きさに２つ折りにし、対向する左右の両端部を溶着し
て袋状としたことを特徴とし、フェルト状不織布はその
表裏に関係なく、Ｕ字状に２つ折りした左右の両端部を
確実に溶着でき、十分な電解液の保持とセパレータ孔部
を活物質が貫通すること、ならびに左右の溶着部からの
活物質のはみだしによる短絡を防ぎ、従来よりさらに長
寿命化された密閉型鉛蓄電池を供給することができる。EFFECTS OF THE INVENTION As described above, the present invention is mainly composed of thermoplastic synthetic resin fibers having high acid resistance, and glass fibers having a fiber diameter of 3 μ or less are dispersed in the separator in the range of 10 wt% or more and 25 wt% or less. Another feature is that one sheet of felt-like nonwoven fabric is folded into two pieces that are large enough to wrap the electrode plate, and the opposite left and right ends are welded together into a bag shape. , The left and right ends folded in two in a U shape can be reliably welded, sufficient electrolyte is retained and the active material penetrates the separator holes, and short circuit due to the active material protruding from the left and right welds It is possible to supply a sealed lead-acid battery that is prevented and has a longer life than before.
第１図は従来の密閉型鉛蓄電池の極板群の斜視図、第２
図は本発明の一実施例における密閉型鉛蓄電池の極板群
の斜視図、第３図は本発明及び従来例による密閉型鉛蓄
電池のサイクル寿命特性図である。 ２……正極板、４……セパレータ、５……溶着部分。FIG. 1 is a perspective view of an electrode group of a conventional sealed lead-acid battery,
FIG. 3 is a perspective view of an electrode group of a sealed lead acid battery according to an embodiment of the present invention, and FIG. 3 is a cycle life characteristic diagram of the sealed lead acid battery according to the present invention and a conventional example. 2 ... Positive electrode plate, 4 ... Separator, 5 ... Welded portion.
Claims (2)
体とし、これに、繊維径３μ以下のガラス繊維を、セパ
レータ全体の10wt％以上、25wt％以下の範囲で分散させ
た１枚のフェルト状不織布を、極板を包むに足る大きさ
にＵ字状に２つ折りにし、対向する左右の両端部を溶着
して袋状としたことを特徴とする密閉型鉛蓄電池用セパ
レータ。1. A synthetic resin fiber having high acid resistance as a main component, to which glass fiber having a fiber diameter of 3 μ or less is dispersed in a range of 10 wt% or more and 25 wt% or less of the whole separator. A separator for a sealed lead-acid battery, characterized in that a felt-like non-woven fabric is folded in two into a U-shape having a size sufficient to wrap an electrode plate, and opposite left and right ends are welded to form a bag.
め、20kg/dm2加圧時の厚さが、0.8〜3mmの範囲である特
許請求の範囲第１項記載の密閉型鉛蓄電池用セパレー
タ。2. The sealed lead-acid battery according to claim 1, wherein the thermoplastic resin fiber accounts for 50 wt% or more of the whole, and the thickness when pressurized at 20 kg / dm 2 is in the range of 0.8 to 3 mm. Separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59217652A JPH0760676B2 (en) | 1984-10-17 | 1984-10-17 | Separator for sealed lead acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59217652A JPH0760676B2 (en) | 1984-10-17 | 1984-10-17 | Separator for sealed lead acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6196659A JPS6196659A (en) | 1986-05-15 |
| JPH0760676B2 true JPH0760676B2 (en) | 1995-06-28 |
Family
ID=16707605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59217652A Expired - Lifetime JPH0760676B2 (en) | 1984-10-17 | 1984-10-17 | Separator for sealed lead acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0760676B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3293287B2 (en) * | 1993-12-07 | 2002-06-17 | 松下電器産業株式会社 | Square sealed alkaline storage battery and its unit battery |
| US7144633B2 (en) | 2002-07-29 | 2006-12-05 | Evanite Fiber Corporation | Glass compositions |
| WO2004011379A2 (en) | 2002-07-29 | 2004-02-05 | Evanite Fiber Corporation | Glass compositions |
| FR2937799B1 (en) * | 2008-10-29 | 2010-12-24 | Dumas Bernard | FIBROUS MATERIAL IN PERMANENT EMPTYING SHEET FOR OPEN BATTERY AND OPEN BATTERY COMPRISING PERMANENT EMPTYING MATERIAL |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5339440A (en) * | 1976-09-24 | 1978-04-11 | Japan Storage Battery Co Ltd | Method of producing battery plate |
-
1984
- 1984-10-17 JP JP59217652A patent/JPH0760676B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6196659A (en) | 1986-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |