JPS5830064A - Closed type thin storage battery - Google Patents

Closed type thin storage battery

Info

Publication number
JPS5830064A
JPS5830064A JP56128212A JP12821281A JPS5830064A JP S5830064 A JPS5830064 A JP S5830064A JP 56128212 A JP56128212 A JP 56128212A JP 12821281 A JP12821281 A JP 12821281A JP S5830064 A JPS5830064 A JP S5830064A
Authority
JP
Japan
Prior art keywords
container
storage battery
battery
plate
separator
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
JP56128212A
Other languages
Japanese (ja)
Inventor
Hiroichi Niki
仁木 博一
Motoi Kanda
基 神田
Yuji Sato
優治 佐藤
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56128212A priority Critical patent/JPS5830064A/en
Publication of JPS5830064A publication Critical patent/JPS5830064A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10Primary casings; Jackets or wrappings
    • H01M50/116Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121Organic material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

PURPOSE:To provide a closed type thin storage battery having high volume efficiency, no container breakage even in increased inner pressure, and long life. CONSTITUTION:A cathode plate 1 is separated from an anode plate 2 with a separator 3 containing an electrolyte interposed, and they are stacked to form a power generating element. In order to decrease the internal resistance of a battery and increase a penetrating rate of the oxygen gas generated from the cathode plate 1 to the anode plate 2 during overcharging, the separator 3 makes as thin as possible, and the cathode plate 1, the anode plate 2, and the separator 3 are kept in contaked with each other. This power generating element is accommodated in a container 4. The container 4 is formed in a shape of rectangular bag from a tube, sheet, or plate of electrolyte resistant and insulating thermoplastic resin such as polyethylene, polypropylene, polyamide, polyvinyl chloride, fluorine resin, and ABS resin, and has excellent pressure resistance.

Description

【発明の詳細な説明】 本発明は薄形密閉式蓄電池、更に詳しく祉、体積効率が
高く、使用寿命の長い薄形密閉式蓄電池に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thin sealed storage battery, and more particularly to a thin sealed storage battery that has high safety and volumetric efficiency and a long service life.

一般に、鉛蓄電池やアルカリ蓄電池は単電池を複数個直
列に接続し1組電池として使用されることが多い。この
場合、円筒形の単電池を接続して外装容器内に収納した
ものは容器内に未充填空間が多く存在するため、蓄電池
全体としての体積効率が低くなる。これに対して、角形
の単電池を収納した組電池は体積効率が高くなシ、した
がって放電容量の大きな電池を得ることかで趣る。
Generally, lead-acid batteries and alkaline batteries are often used as a set of batteries by connecting a plurality of single cells in series. In this case, when cylindrical single cells are connected and housed in an outer container, there are many unfilled spaces in the container, so the volumetric efficiency of the storage battery as a whole becomes low. On the other hand, assembled batteries containing rectangular single cells do not have high volumetric efficiency, so it is difficult to obtain a battery with a large discharge capacity.

しかしながら、角形の単電池を収納した場合でも、組電
池が小型化したときには単電池の容器、仕切板、極板接
続のための空間等の占める無効な体積の比率が大きくな
り、体積効率が低下する。特に小型で、薄形の組電池を
得ようとする場合には体積効率が著しく低下してしまい
、実際上、その製造が無意味となるっ 仁のような問題点を解決するため、有機質のシート又は
板の周縁部を熱融着又は接層して封止した袋状容器の中
に、電解質を含有するセ/4レータを介して積層された
陽極板と陰極板とから成る発電要素を収納し、その側面
に陽、陰極端子を配設した構造の角形密閉式電池が提案
されている(特開昭53−14338号、特開昭53−
14339号)。この種の電池は、厳重で堅牢な外鋏容
器中複雑な封止機構を必要としないため、電池全体の形
状を薄形・小形にすることがで龜、組電池としては体積
効率の高い蓄電池を構成することができる。
However, even when prismatic cells are stored, as the assembled battery becomes smaller, the ratio of ineffective volume occupied by the cell container, partition plate, space for connecting electrode plates, etc. increases, resulting in a decrease in volumetric efficiency. do. In particular, when trying to obtain a small and thin assembled battery, the volumetric efficiency decreases significantly, making the production practically meaningless. A power generation element consisting of an anode plate and a cathode plate laminated via a separator containing an electrolyte is placed in a bag-like container sealed by heat-sealing or laminating the peripheral edges of sheets or plates. A rectangular sealed battery with a structure in which the positive and negative terminals are arranged on the sides has been proposed (Japanese Patent Laid-Open No. 14338/1983,
No. 14339). This type of battery does not require a complicated sealing mechanism inside a strict and robust outer container, so the overall shape of the battery can be made thin and small, making it a storage battery with high volumetric efficiency as an assembled battery. can be configured.

しかしながら、この様婢電池の構造にあっては、その内
部で急激1にガス発生が生じた場合には、本来1機械的
強度の大きくない襞状容器が内圧の上昇によ)破損する
という欠点を有する。
However, the structure of this type of battery has the disadvantage that if gas suddenly occurs inside the battery, the pleated container, which does not have high mechanical strength, will break due to the increase in internal pressure. has.

例えば、ニッケルーカド考つム蓄電池は、過充電時にニ
ッケル也から酸素ガスを発生するが、これをカド々−ウ
ム極が吸収するため、発生量が吸収量よシも少なければ
電池内における酸素ガスの蓄積は生じない。しかしなが
ら、大電流による過充電では酸素ガスの発生量が極めて
多くなるため、咳酸素ガスは吸収されきれず、急激に電
池内に蓄積され、内圧上昇が起る。また、低温で4カド
)ラム極における酸素ガスの吸収速度が遅いため酸素ガ
スは蓄積され中すく々る。
For example, a nickel-cadmium storage battery generates oxygen gas from the nickel when overcharged, but this is absorbed by the cadmium electrode, so if the amount generated is less than the amount absorbed, the oxygen gas in the battery will decrease. No accumulation occurs. However, in overcharging with a large current, the amount of oxygen gas generated becomes extremely large, so that the coughed oxygen gas cannot be completely absorbed and is rapidly accumulated within the battery, causing an increase in internal pressure. In addition, since the absorption rate of oxygen gas at the 4-quadram pole is slow at low temperatures, oxygen gas accumulates and dries up inside.

また1組電池として充放電する場合には、個々の単電池
の放電容量にはパラツキがある丸め、充電時に過充電状
態となる単電池が出現することがあシ、そのときも、上
記場内によシ該電池容器の破損が発生する。容器の破損
は、電解液の不足をもたらし、放電容量の低下、寿命の
短縮の原因となるばかシか、安全性の観点からも大きな
問題を惹起する。
In addition, when charging and discharging as a set of batteries, the discharge capacity of individual cells may vary, and some cells may become overcharged during charging. Otherwise, the battery container will be damaged. Damage to the container not only causes a shortage of the electrolyte, lowering the discharge capacity and shortening the life of the battery, but also poses a major problem from a safety standpoint.

本発明者らは、上記した角形密閉式蓄電池における内圧
上昇に基づく容器破損に関し種々の検討を重ねたところ
、容器の形状、封止部の封止幅と咳容器の耐圧性とが相
互に関連するとの事冥を見出し、本発明構造の角形密閉
式蓄電池を完成するに到った。
The present inventors conducted various studies regarding container damage caused by internal pressure increase in the above-mentioned prismatic sealed storage batteries, and found that the shape of the container, the sealing width of the sealing part, and the pressure resistance of the cough container are interrelated. After discovering this problem, we completed a prismatic sealed storage battery having the structure of the present invention.

本発明は、体積効率が高く、内圧上昇による容器の破損
を防止でき、その結果、使用寿命の長い薄形密閉式蓄電
池の提供を目的とする。
An object of the present invention is to provide a thin sealed storage battery that has high volumetric efficiency, can prevent damage to the container due to an increase in internal pressure, and has a long service life.

本発明の蓄電池線、電解質を含有するセパレータを介し
て互いに密接して積層された陽極板と陰極板とから成る
発電要素を、熱可塑性樹脂の角形で袋状の容器内に収納
し、該容器の少くとも一辺の周縁部を気密に封止した構
造の薄形密閉式蓄電池において、該容器の長辺と短辺の
長さの比が1〜2の範囲にあシ、かつ、該封止部の幅と
長辺の長さの比が0.015〜o、asoo範囲にある
ことを特徴とす本ものである。
The storage battery wire of the present invention, a power generation element consisting of an anode plate and a cathode plate laminated closely to each other via a separator containing an electrolyte, is housed in a square bag-like container made of thermoplastic resin. In a thin sealed storage battery having a structure in which the peripheral edge of at least one side of the container is hermetically sealed, the ratio of the length of the long side to the short side of the container is in the range of 1 to 2, and the sealed This item is characterized by the ratio of the width of the part to the length of the long side being in the range of 0.015 to 0,000.

以下に、本発明の薄形密閉式蓄電池を図示し九l実施例
に基づいて説明する。第1図は本発明蓄電池の一部破断
平面図、第2図は第1図のA−人′線に沿う縦断面図で
ある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The thin sealed storage battery of the present invention will be illustrated below and explained based on nine embodiments. FIG. 1 is a partially cutaway plan view of the storage battery of the present invention, and FIG. 2 is a longitudinal sectional view taken along the line A--A' in FIG.

図において、la陽極板、2は陰極板である。In the figure, la is an anode plate and 2 is a cathode plate.

陽極板lと陰極板2は電解質を含有するセミ4レータ3
t−介して隔離され、全体紘積層されて発電要素を構成
する。このとき、電池の内部抵抗を下げ、かつ、過充電
時における陽極板lからの発生酸素ガスの一極板2への
透過速ff:太きくするために、セパレータ3をできる
@)薄くすると同時に陽極板l、陰極板2、セパレータ
曇 3を互いに密接せしめる。
The anode plate 1 and the cathode plate 2 are semi-4 plates 3 containing electrolyte.
They are isolated through a t-diameter and then stacked together to form a power generation element. At this time, in order to lower the internal resistance of the battery and increase the permeation rate ff of oxygen gas generated from the anode plate 1 to the monopolar plate 2 during overcharging, the separator 3 can be made thinner. The anode plate 1, the cathode plate 2, and the separator cloud 3 are brought into close contact with each other.

この発電要素は、容(至)4の中に収納される。This power generation element is housed in the container 4.

容器4は、4リエチレン、ポリプ日ピレン、ポリアミド
、ポリ塩化ビニル、フッ素樹脂、ABS樹脂など耐電解
液性で電気絶縁性の熱可塑性樹脂のチューブ、シート、
板(通常、厚み唸0.1〜1.0■)などから構成され
、角形の袋形状である。  、 容器4の少くとも一辺(図では2つの長辺)の周縁部は
、ヒータ、超音波、レーデなどの手段を用いて熱融着し
、又拡接着剤を用いて接着して気密に封止する。5が、
そのときに、ある幅をもって形成される封凪部である。
The container 4 is made of electrolyte-resistant and electrically insulating thermoplastic resin tubes, sheets, etc.
It is composed of a plate (usually 0.1 to 1.0 cm thick) and has a rectangular bag shape. The periphery of at least one side (two long sides in the figure) of the container 4 is sealed airtight by heat-sealing using means such as a heater, ultrasonic waves, or rede, or by gluing using a spreading adhesive. Stop. 5 is
At that time, it is a sealing part that is formed with a certain width.

6.7社それぞれ陽極端子、陰極端子であって、陽極板
l及び陰−極板2かも容器4の外部にまで導出される。
The anode terminal and cathode terminal of 6.7 companies, respectively, and the anode plate 1 and the cathode plate 2 are also led out to the outside of the container 4.

本発明の蓄電池は1以上の構造において、容器4の長辺
の畏さく図では&)と短辺の長さく−ではb)との比が
1〜2の範囲にあること、すなわち、1≦%≦2 の関
係を満足すること、かつ、封止部5の幅(a)と長辺の
長さく−との比が0.015〜0.060の範囲にある
こと、すなわち、0.015≦ζ≦0.060の関係を
満足することを特黴とする。図では島が長辺の長さ、b
が短辺の長さであるが、baaの場合(縦臘に細長くな
る)には、上記し九九及び%はそれぞれ札。
In the storage battery of the present invention, in one or more structures, the ratio of the long side of the container 4 (&) in the vertical view to the short side (b) in the short side is in the range of 1 to 2, that is, 1≦ %≦2, and the ratio of the width (a) of the sealing part 5 to the length of the long side is in the range of 0.015 to 0.060, that is, 0.015 A special mold is one that satisfies the relationship ≦ζ≦0.060. In the figure, the island is the length of the long side, b
is the length of the short side, but in the case of baa (elongated vertically), the multiplication table and % are the respective numbers.

% としなければならないことはいうまでもない。It goes without saying that it must be expressed as %.

この1九が2を超えると容器4の耐圧性が極端に低下し
、過充電時のガス蓄積によって容易に破損する。また、
%が0.01!S未満の場合にも容器4の耐圧性が急激
に低下し、また0、060を超えても耐圧性向上の効果
は認められず、いたずらに体積効率の低下を招くのみで
ある。
If 19 exceeds 2, the pressure resistance of the container 4 will be extremely reduced and it will be easily damaged due to gas accumulation during overcharging. Also,
% is 0.01! If it is less than S, the pressure resistance of the container 4 will drop sharply, and if it exceeds 0.060, no effect of improving the pressure resistance will be observed, and the volumetric efficiency will only be unnecessarily reduced.

以下に、本発明蓄電池の効果を実施例として示す。The effects of the storage battery of the present invention will be shown below as examples.

陽極板としてニッケル電極、陰極板としてカドニウム電
極、セフレータとしてナイUン不織布、容器として厚み
0.15閣のIリエチレンシ−トt−用い、第1図、第
2図に示した構造の本発明密閉式ニッケルーカドオウム
蓄電池を作成した。この単電池の寸法り長辺78■、短
辺50鶏、厚み4.5閣、封止部01m2.5mmでめ
った。
A nickel electrode was used as the anode plate, a cadmium electrode was used as the cathode plate, a nonwoven fabric was used as the seflator, and a polyethylene sheet with a thickness of 0.15 mm was used as the container. A nickel-cadmium storage battery was created. The dimensions of this cell were long side 78 cm, short side 50 cm, thickness 4.5 cm, and the sealing part was 01 m2.5 mm.

長辺と短辺の比: 1.56 、封止部の幅と長辺の比
: O,OR3である。この単電池をlO佃組込んで全
体が160111EX71園×25mの寸法形状の12
Vの組電池とした。
The ratio of the long side to the short side: 1.56, and the ratio of the width of the sealing part to the long side: O, OR3. By incorporating this single battery into IO Tsukuda, the entire structure is 12
It was made into a V assembled battery.

つぎに、従来電池として円筒形ニッケルーカドミウム蓄
電池(NR−8C) t 10測置列に接続し、外装容
器に収納して全体が上記寸法形状である12V組電池を
用意した。また、他の従来電池として、寸法が23mX
14.9mX50mの単電池を厚み1mの仕切シ板で区
切って10個収納する角形の組電池を用意した。この角
形組電池の全体の寸法も上記した組電池と同一にした。
Next, cylindrical nickel-cadmium storage batteries (NR-8C) were connected to a 10 measurement array as a conventional battery and housed in an outer container to prepare a 12V assembled battery having the above dimensions and shape as a whole. In addition, as other conventional batteries, the dimensions are 23mX
A rectangular assembled battery containing 10 cells measuring 14.9 m x 50 m separated by 1 m thick partition plates was prepared. The overall dimensions of this prismatic battery pack were also the same as those of the battery pack described above.

以上、3種類の電池につきIAの電流値で充放電試験を
行ない、そのときの放電界量を測定し、かつ体積効率を
算出した。その結果を表1に示した。
As described above, a charge/discharge test was conducted on three types of batteries at a current value of IA, the discharge field at that time was measured, and the volumetric efficiency was calculated. The results are shown in Table 1.

表  1 結果から明らかなように、本発明の蓄電池は従来電池に
比べて放電容量、体積効率にすぐれることが判明した。
Table 1 As is clear from the results, the storage battery of the present invention was found to have superior discharge capacity and volumetric efficiency compared to conventional batteries.

厚み0.15mのポリエチレンシートを用いて、長辺と
短辺の比率の異なる4種類の袋状容器を作成し、こむに
窒素ガスを圧入して容器の耐圧性を調査した。
Four types of bag-shaped containers with different ratios of long sides to short sides were made using polyethylene sheets with a thickness of 0.15 m, and nitrogen gas was injected into the chambers to investigate the pressure resistance of the containers.

この場合、袋状容器の2つの短辺と1つの長辺を熱融着
法で封止し、残ルの長辺は融着せず折夛蘭げた。この状
態において、短辺の中央部に小さな穴をあけ、ここから
余興・クイズを挿入し、穴とパイプ間の空隙は接着剤で
封止して窒素ガス圧入口を形成した。なお、各封止部の
幅は長辺の長さに対し0.028の比率で一定とした。
In this case, the two short sides and one long side of the bag-like container were sealed by heat fusion, and the remaining long side was not fused and was left open. In this state, a small hole was made in the center of the short side, an entertainment/quiz was inserted through this hole, and the gap between the hole and the pipe was sealed with adhesive to form a nitrogen gas pressure inlet. Note that the width of each sealing portion was kept constant at a ratio of 0.028 to the length of the long side.

圧入口からは所定圧の窒素ガスを圧入し、長辺・短辺の
融着封止部の破損を観察し、破損したときのガス圧tI
Illべた。なお、袋@容器の上下方向が6閣以上に膨
張しないようにした。以上の結果を一括して表2に示し
た。
Nitrogen gas at a predetermined pressure is injected from the pressure inlet, and the damage to the long and short sides of the fused seal is observed, and the gas pressure tI at the time of damage is determined.
Ill be sure. In addition, the bag @container was made to not expand more than 6 times in the vertical direction. The above results are collectively shown in Table 2.

表  2 実施例2と同様な試験方法により、封止幅が異なった6
種類の袋状容器の耐圧性を試験した1 なお、容器の寸
法は60X90−である。測定結果を表3に示した。
Table 2 Six samples with different sealing widths were tested using the same test method as Example 2.
The pressure resistance of different types of bag-shaped containers was tested.1 The dimensions of the containers are 60 x 90-. The measurement results are shown in Table 3.

表  3 庵−封止@ニーj1辺 以上の実施例にも示した如く、本発明の薄形密閉式蓄電
池は体積効率が高く、耐圧性に優れたものであ)、その
工業的利用価値は非常に大きなものがある。
Table 3 Hermit Sealing @ Knee J As shown in the examples of one or more sides, the thin sealed storage battery of the present invention has high volumetric efficiency and excellent pressure resistance), and its industrial utility value is There is something very big.

【図面の簡単な説明】[Brief explanation of the drawing]

@1図は本発明に係る薄形密閉式蓄電池の1実施例を示
す一部破断乎面図であシ、第2図は#I1図におけるA
−に線に沿う縦断面図である。 1・・・陽極板、2・・・陰極板、3・・・セパレータ
。 4・・・容器、5・・・封止部、6・・・陽極端子、7
・・・陽極端子。 第1図 Δ 第2図
@ Figure 1 is a partially cutaway view showing one embodiment of the thin sealed storage battery according to the present invention, and Figure 2 is A in Figure #I1.
It is a longitudinal cross-sectional view along the line -. 1... Anode plate, 2... Cathode plate, 3... Separator. 4... Container, 5... Sealing part, 6... Anode terminal, 7
...Anode terminal. Figure 1Δ Figure 2

Claims (1)

【特許請求の範囲】[Claims] 電解質を含有するセパレータを介して互いに密接して積
層された陽極板と陰極板とから成る発電l!素を、熱可
履性樹脂の角形で袋状の容器内に収納し、該容器の少く
とも一辺の周縁部を気密に封止した構造の薄形密閉式蓄
電池において、該容器の長辺と短辺の長さの比が1〜2
の範囲にあシ、かつ、該封止部の幅と長辺の長さの比が
0.015〜0.060の範囲にあることt−特徴とす
る薄形密閉式
A power generator consisting of an anode plate and a cathode plate stacked closely together with an electrolyte-containing separator in between! In a thin sealed storage battery, the element is stored in a square bag-like container made of thermoplastic resin, and the periphery of at least one side of the container is hermetically sealed. The ratio of short side length is 1 to 2
and the ratio of the width of the sealing part to the length of the long side is in the range of 0.015 to 0.060.
JP56128212A 1981-08-18 1981-08-18 Closed type thin storage battery Pending JPS5830064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56128212A JPS5830064A (en) 1981-08-18 1981-08-18 Closed type thin storage battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56128212A JPS5830064A (en) 1981-08-18 1981-08-18 Closed type thin storage battery

Publications (1)

Publication Number Publication Date
JPS5830064A true JPS5830064A (en) 1983-02-22

Family

ID=14979254

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56128212A Pending JPS5830064A (en) 1981-08-18 1981-08-18 Closed type thin storage battery

Country Status (1)

Country Link
JP (1) JPS5830064A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004526A1 (en) * 1984-03-29 1985-10-10 Matsushita Electric Industrial Co., Ltd. Sealed battery
WO1986003060A1 (en) * 1984-11-08 1986-05-22 Matsushita Electric Industrial Co., Ltd. Hermetically-sealed storage battery
JPS6273463U (en) * 1985-10-29 1987-05-11

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004526A1 (en) * 1984-03-29 1985-10-10 Matsushita Electric Industrial Co., Ltd. Sealed battery
WO1986003060A1 (en) * 1984-11-08 1986-05-22 Matsushita Electric Industrial Co., Ltd. Hermetically-sealed storage battery
JPS6273463U (en) * 1985-10-29 1987-05-11

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