JP2001202943A - Battery - Google Patents
BatteryInfo
- Publication number
- JP2001202943A JP2001202943A JP2000011431A JP2000011431A JP2001202943A JP 2001202943 A JP2001202943 A JP 2001202943A JP 2000011431 A JP2000011431 A JP 2000011431A JP 2000011431 A JP2000011431 A JP 2000011431A JP 2001202943 A JP2001202943 A JP 2001202943A
- Authority
- JP
- Japan
- Prior art keywords
- explosion
- filter
- particles
- storage battery
- proof
- 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
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は特に自動車用蓄電池
の防爆機能構成に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosion-proof function of a storage battery for an automobile.
【０００２】[0002]
【従来の技術】従来、自動車用蓄電池に使用されている
防爆構成としては、多くの技術が紹介されている。その
中で多孔性を有するフィルタ材を防爆フィルタとして液
口栓本体内部に装着する方法が主に採用されており、特
開昭５４−５０８４１号公報等に開示されている。液口
栓本体へのフィルタ装着方法や形状等に関しては種々の
方法が考案、実用化されているが、いずれもフィルタの
材質はアルミナ粒子体を焼結したセラミック製であっ
た。このようなアルミナを焼結したセラミックを用いて
多孔体を製造する場合には１０００℃を越える極めて高
い温度下で長時間の焼結を必要とすることや、後工程に
てセラミック焼結体の表面に撥水性オイルをコーティン
グする等の撥水処理を施すことが重要不可欠である等の
理由により製造コスト面で極めて不利であった。このよ
うな製造コスト面での不利に加えて、特に電解液に希硫
酸を使用している鉛畜電池においては使用期間に経過と
ともに撥水剤の機能が低下する欠点があった。特に自動
車用鉛畜電池においては、例えば７５℃程度の比較的高
温で数年間にわたって使用されるため、蓄電池の使用期
間にわたってフィルタの撥水性を良好な状態に維持する
ことは極めて困難であり、ある程度使用期間が過ぎると
撥水性は極度に低下してフィルタに目詰まりが発生する
等の不具合が見られることがあった。このような不具合
を解決するために撥水性を有する合成樹脂で多孔体を作
製することが行われてきている。しかしながら合成樹脂
で作製した多孔体は安定した通気度を得ることが困難で
あり、防爆性能も非常にばらつきの大きいものであっ
た。このため、特定範囲の粒子径を有する合成樹脂粉体
を分離して用いることが考えられるが、このような分離
により原料の歩留まりが低下して結果としてコストは低
下しないと言う問題があった。2. Description of the Related Art Conventionally, many technologies have been introduced as explosion-proof configurations used for automobile storage batteries. Among them, a method of attaching a porous filter material as an explosion-proof filter to the inside of a liquid stopper body is mainly adopted, and is disclosed in Japanese Patent Application Laid-Open No. 54-50841. Various methods have been devised and put into practical use with respect to the method of attaching the filter to the liquid port plug body, the shape, and the like, but the material of the filter was ceramic made of alumina particles sintered. When a porous body is manufactured using such a ceramic obtained by sintering alumina, it is necessary to perform sintering for a long time at an extremely high temperature exceeding 1000 ° C. This is extremely disadvantageous in terms of manufacturing cost because it is essential to perform a water-repellent treatment such as coating a surface with a water-repellent oil. In addition to such disadvantages in manufacturing cost, in particular, in lead-acid batteries using dilute sulfuric acid as the electrolyte, there is a disadvantage that the function of the water-repellent agent deteriorates as the use period elapses. In particular, since lead-acid batteries for automobiles are used for several years at a relatively high temperature of, for example, about 75 ° C., it is extremely difficult to maintain the water repellency of the filter in a good state over the life of the storage battery. After the period of use, the water repellency is extremely reduced, and a problem such as clogging of the filter may be observed. In order to solve such a problem, a porous body has been produced from a synthetic resin having water repellency. However, it is difficult to obtain a stable air permeability of a porous body made of a synthetic resin, and the explosion-proof performance has a very large variation. For this reason, it is conceivable to separate and use synthetic resin powder having a specific range of particle diameters. However, there is a problem that such separation lowers the yield of raw materials and does not result in a reduction in cost.
【０００３】[0003]
【発明が解決しようとする課題】本発明は前記したよう
に蓄電池寿命末期まで撥水機能を有する合成樹脂材で構
成されるとともに、安定した防爆性能を有する防爆フィ
ルタを備えた蓄電池を安価に提供することを目的とす
る。SUMMARY OF THE INVENTION As described above, the present invention provides an inexpensive storage battery comprising a synthetic resin material having a water-repellent function until the end of the storage battery life and having an explosion-proof filter having stable explosion-proof performance. The purpose is to do.
【０００４】[0004]
【課題を解決するための手段】前記した課題を解決する
ために、本発明の請求項１記載に係る発明は防爆用の多
孔性フィルタをガス排気経路途中に備えた蓄電池におい
て、前記多孔性フィルタはポリプロピレン樹脂粉体の焼
結体からなり、前記ポリプロピレン樹脂粉体は３００μ
ｍ以下の径を有する粒子を含み、さらに６００μｍ以上
の粒子径を有する粒子の割合を５重量％を上限として含
有するものである。According to a first aspect of the present invention, there is provided a storage battery provided with an explosion-proof porous filter in a gas exhaust path. Is made of a sintered body of polypropylene resin powder, and the polypropylene resin powder is 300 μ
m and particles having a particle diameter of 600 μm or more, with the upper limit being 5% by weight.
【０００５】また、本発明の請求項２記載に係る発明は
請求項１に記載の蓄電池において、ポリプロピレン樹脂
粉体中の３００μｍ以下の粒子径を有する粒子の割合は
２０重量％以下とした。According to a second aspect of the present invention, in the storage battery according to the first aspect, the proportion of particles having a particle diameter of 300 μm or less in the polypropylene resin powder is set to 20% by weight or less.
【０００６】また、本発明の請求項３記載に係る発明は
請求項１または２のいずれかに記載する構成を有する蓄
電池において、ポリプロピレン樹脂粉体中の６００μｍ
以上の粒子径を有する粒子の割合をｘ重量％とし、３０
０μｍ以下の粒子径を有する粒子の割合をｙ重量％とし
た時にｙ／ｘ≧１．５とした。According to a third aspect of the present invention, there is provided a storage battery having the structure according to any one of the first and second aspects, wherein the 600 μm
The ratio of the particles having the above particle diameter is x weight%, and 30
When the ratio of particles having a particle diameter of 0 μm or less is defined as y weight%, y / x ≧ 1.5.
【０００７】さらに、本発明の請求項４記載に係る発明
は請求項１ないし３のいずれか１項に記載の構成を有す
る蓄電池において、多孔性フィルタに単位通過面積当た
り０．１７７リットル／分・ｍｍ2（開口径φ６ｍｍ、
すなわち２８．２７ｍｍ2の場合で５リットル／分）で
気体を通過させた時の圧力損失を１．９ｋＰａ以上とし
た。Further, according to a fourth aspect of the present invention, there is provided a storage battery having the configuration according to any one of the first to third aspects, wherein the porous filter has a capacity of 0.177 liter / min. mm 2 (opening diameter φ6mm,
That is, the pressure loss when gas was passed at a rate of 5 liters / minute in the case of 28.27 mm 2 was set to 1.9 kPa or more.
【０００８】[0008]
【発明の実施の形態】本発明の実施の形態を以下に説明
する。Embodiments of the present invention will be described below.
【０００９】熱可塑性合成樹脂よりなるフィルタ部品の
生産過程は、従来主に使用されてきたアルミナよりなる
フィルタ部品と殆ど同等であるが、原材料調達や焼結温
度、焼結時間等に効率的な改善を図っている。まず原材
料については従来原石を粉砕しアルミナ成分を分離、一
定サイズの粒子体を選定し、さらにいくつかの結合材を
混合させるものであった。本発明での蓄電池に用いるフ
ィルタは主に工業成型用品としての汎用のポリプロピレ
ンホモポリマー（以下ＰＰ樹脂と云う）を分級して６０
０μｍ以上と３００μｍ以下の粒子径を有するＰＰ樹脂
粉体を分離する。残った３００μｍから６００μｍの粒
子径を有するＰＰ樹脂粉体に少なくとも６００μｍ以上
の粒子径のＰＰ樹脂粉体を５重量％以下の割り合いで混
合する。その後、粒子径３００μｍ以下のＰＰ樹脂粉体
を粉体全重量の２０重量％以下になるように配合する。
また、６００μｍ以上の粒子径の樹脂粉体重量百分率ｘ
と３００μｍ以下の粒子径の樹脂粉体重量百分率ｙとの
比率（ｙ／ｘ）を１．５以上に確保するように混合して
原料粉体を得る。ここまでの製造工程で２段階の分級操
作を行っているが、例えばｙの値があらかじめ確認され
ていればこのｙ値に応じたｘ値を確保するだけの６００
μｍ以上の粒子径を有するＰＰ樹脂を混合すればよい。
次にこのＰＰ樹脂原料粉体を本発明例ではおおよそ２０
０℃程度の低温、かつ３０分以下の短時間で焼結工程を
行う。この焼結工程において従来のアルミナを用いた工
程では１０００℃を超える高温炉にて１０時間以上焼結
させるため、バッチ式生産を行っていたものに対して本
発明によるものでは低温、短時間で焼結工程が完了でき
るので容易に連続生産することができる。このようにし
て得たフィルタの通気性のばらつきは非常に少なく、安
定した防爆性能を有している。また、従来は鉛畜電池室
内側からの電解液である硫酸成分の這い上がり等に伴う
硫酸の付着での各種不具合を防止する目的で、焼結後撥
水性オイルを防爆フィルタにコーティングしていたが、
樹脂自身の撥水特性により撥水性オイルによる後処理が
不要となる。また、広範囲の粒子径のＰＰ樹脂粉体を利
用することができるので、原料の歩留まりの低下をより
一層抑制することができる。この防爆フィルタを電池セ
ルから外部への排気経路途中に設けることにより本発明
の蓄電池を構成することができる。The production process of a filter component made of a thermoplastic synthetic resin is almost the same as that of a filter component made of alumina which has been mainly used in the past, but it is efficient in procuring raw materials, sintering temperature and sintering time. We are improving. First, as for raw materials, conventionally, a raw stone was pulverized to separate an alumina component, particles of a certain size were selected, and some binders were further mixed. The filter used in the storage battery according to the present invention is mainly classified into a general-purpose polypropylene homopolymer (hereinafter referred to as a PP resin) as an industrial molded article, and classified into 60.
A PP resin powder having a particle diameter of 0 μm or more and 300 μm or less is separated. The remaining PP resin powder having a particle diameter of 300 μm to 600 μm is mixed with a PP resin powder having a particle diameter of at least 600 μm or more in a proportion of 5% by weight or less. Thereafter, a PP resin powder having a particle diameter of 300 μm or less is blended so as to be 20% by weight or less of the total weight of the powder.
Further, the resin powder weight percentage x of the particle diameter of 600 μm or more x
The raw material powder is obtained by mixing so that the ratio (y / x) of the weight percentage y of the resin powder having a particle diameter of 300 μm or less to 1.5 or more is secured. In the manufacturing process up to this point, a two-stage classification operation has been performed. For example, if the value of y is confirmed in advance, it is only necessary to secure an x value corresponding to the y value.
What is necessary is just to mix the PP resin which has a particle diameter of a micrometer or more.
Next, this PP resin raw material powder is used for approximately 20
The sintering step is performed at a low temperature of about 0 ° C. and for a short time of 30 minutes or less. In the conventional sintering process using alumina, sintering is performed in a high-temperature furnace exceeding 1000 ° C. for 10 hours or more. Since the sintering process can be completed, continuous production can be easily performed. The filter thus obtained has very little variation in air permeability, and has stable explosion-proof performance. In addition, conventionally, a water-repellent oil was coated on an explosion-proof filter after sintering in order to prevent various problems due to adhesion of sulfuric acid due to crawling of a sulfuric acid component as an electrolytic solution from the inside of a lead-acid battery chamber. But,
Post-treatment with a water-repellent oil becomes unnecessary due to the water-repellent properties of the resin itself. In addition, since a PP resin powder having a wide range of particle diameters can be used, a decrease in the yield of raw materials can be further suppressed. By providing this explosion-proof filter in the middle of the exhaust path from the battery cell to the outside, the storage battery of the present invention can be configured.
【００１０】[0010]
【実施例】以下、本発明の実施例について説明する。ま
ず、汎用のポリプロピレン樹脂粉体Ａを用意した。この
ポリプロピレン樹脂粉体Ａを粒子径３００μｍと６００
μｍで分級操作した。その結果、ポリプロピレン樹脂粉
体Ａに含まれる粒子径３００μｍ以下の粉体（以下粉体
αと云う）はポリプロピレン樹脂粉体Ａ重量の２０重量
％であった。同じく粒子径３００μｍから６００μｍの
粉体（以下粉体βと云う）は７０重量％、粒子径６００
μｍ以上の粉体（以下粉体γと云う）は１０重量％であ
った。これらの各粒子径を有する粉体α、β、γを様々
の比率で混合し、原料粉体を作製した。これらの原料粉
体を成形型に充填し２００℃中で２０分間加熱して焼結
させて表１に示す蓄電池用の防爆フィルタを作製した。Embodiments of the present invention will be described below. First, general-purpose polypropylene resin powder A was prepared. This polypropylene resin powder A was prepared with a particle diameter of 300 μm and a particle diameter of 600 μm.
Classification was performed using μm. As a result, the powder having a particle size of 300 μm or less (hereinafter referred to as powder α) contained in the polypropylene resin powder A was 20% by weight of the weight of the polypropylene resin powder A. Similarly, powder having a particle diameter of 300 μm to 600 μm (hereinafter referred to as powder β) is 70% by weight,
The powder having a particle size of μm or more (hereinafter referred to as powder γ) was 10% by weight. Powders α, β, and γ having these respective particle diameters were mixed at various ratios to prepare raw material powders. These raw material powders were filled in a mold, heated at 200 ° C. for 20 minutes, and sintered to produce an explosion-proof filter for a storage battery shown in Table 1.
【００１１】[0011]
【表１】 [Table 1]
【００１２】表１に示した防爆フィルタＡ〜Ｉそれぞれ
１００個づつ作製し、防爆フィルタの通気性を測定し
た。実験的には防爆フィルタの片面に加圧チャンバーを
装着し、他の片面は開放された状態とし、加圧チャンバ
ー内の内圧を上昇させていき、加圧チャンバーからの防
爆フィルタを通過する空気流量が防爆フィルタ開口面積
当たり０．１７７リットル／分・ｍｍ2の流量となった
時点での加圧チャンバー内の内圧を圧力損失として測定
し、この圧力損失値を通気性の指標とした。この圧力損
失値の測定結果を表２に示す。なお、フィルタの開口サ
イズはφ６（２８．２７４ｍｍ2）としたので実際の空
気流量は５リットル／分・ｍｍ2である。なお、フィル
タの厚みは４．０ｍｍとした。One hundred explosion-proof filters A to I shown in Table 1 were manufactured, and the air permeability of the explosion-proof filters was measured. Experimentally, a pressurized chamber was installed on one side of the explosion-proof filter, the other side was left open, the internal pressure in the pressurized chamber was increased, and the air flow from the pressurized chamber through the explosion-proof filter Was measured as a pressure loss at the time when the flow rate became 0.177 liter / min · mm 2 per explosion-proof filter opening area, and this pressure loss value was used as an index of gas permeability. Table 2 shows the measurement results of the pressure loss values. Since the opening size of the filter was φ6 (28.274 mm 2 ), the actual air flow rate was 5 l / min · mm 2 . The thickness of the filter was 4.0 mm.
【００１３】[0013]
【表２】 [Table 2]
【００１４】次に防爆性能と圧力損失値との関係を確認
するために表２で示した各圧力損失値別にフィルタを選
別し、このフィルタを組み込んだ液栓を用いて５５Ｄ２
３型電池（１２Ｖ４８Ａｈ）を作製した。これらの電池
を完全充電状態とした後、３０Ａの定電流で充電し、充
電開始後３０秒目の時点で液栓近傍に電気スパークを発
生させた。その結果、圧力損失値が１．８ｋＰａ以下で
電気スパークが電槽内の酸素・水素ガスに引火した。よ
って圧力損失値は１．９以上に確保する必要があること
が判り、防爆フィルタＡ、Ｂ、ＥおよびＦは防爆フィル
タとして機能しないことが確認できた。次にこれらの電
池を９０℃中で１３．８Ｖの定電圧過充電を４週間行っ
た時の電槽の状態を確認した。その結果、圧力損失値が
初期の状態で６．５ｋＰａ以上のものについて防爆フィ
ルタに見詰まりが発生し、その結果電槽内圧が上昇し、
電槽の膨れが発生していた。これらの結果から防爆フィ
ルタＣ、Ｄ、Ｇ、Ｈ、Ｉについて圧力損失値の最小値が
１．９ｋＰａ以上で、かつ最大値が６．５ｋＰａ未満と
いう条件を満たすことが確認できた。Next, in order to confirm the relationship between the explosion-proof performance and the pressure loss value, a filter was selected for each pressure loss value shown in Table 2, and a 55D2 filter was installed using a liquid stopper incorporating the filter.
A type 3 battery (12V48Ah) was produced. After these batteries were fully charged, they were charged at a constant current of 30 A, and an electric spark was generated near the liquid tap 30 seconds after the start of charging. As a result, the electric spark ignited the oxygen / hydrogen gas in the battery case when the pressure loss value was 1.8 kPa or less. Therefore, it was found that it was necessary to secure the pressure loss value to 1.9 or more, and it was confirmed that the explosion-proof filters A, B, E, and F did not function as explosion-proof filters. Next, the condition of the battery case when these batteries were subjected to constant voltage overcharge of 13.8 V at 90 ° C. for 4 weeks was confirmed. As a result, the explosion-proof filter is clogged for those having a pressure loss value of 6.5 kPa or more in the initial state, and as a result, the internal pressure of the battery case increases,
The battery case had swelled. From these results, it was confirmed that the minimum values of the pressure loss values of the explosion-proof filters C, D, G, H, and I satisfied the condition that they were 1.9 kPa or more and the maximum values were less than 6.5 kPa.
【００１５】また、防爆フィルタＢ、ＣおよびＩの比較
から粉体γを含有しない場合には粉体αの含有量を２０
重量％以下とする必要があることが判る。粉体γの粒子
を添加する場合には少なくともその含有量を５重量％以
下に確保する必要があり、粉体αの含有量ｙを少なくと
も粉体γの含有量ｘの１．５倍以上に混合することが好
ましいことが判る。なぜならばｙ／ｘ＝１．０とした防
爆フィルタＨについても適当な圧力損失値を示したが、
最低圧力損失値が１．９ｋＰａと防爆性能を有する最低
値であったため、より安全を確保するにはｙ／ｘ≧１．
５の構成とすることが好ましい。特に粉体γを含有して
このような条件を満たす防爆フィルタＤおよびＧは、粒
子径を３００μｍ以上６００μｍ以下に限定した防爆フ
ィルタＨよりもはるかに圧力損失値のばらつきが少なく
好ましいことが確認できた。また、防爆フィルタＤ、Ｇ
およびＨは従来選別して除去せざるを得なかった大きな
粒子径もしくは小さな粒子径を有効に利用できるので、
原材料の歩留まり向上のために特に好ましいことが判
る。From the comparison of the explosion-proof filters B, C and I, when the powder γ is not contained, the content of
It is understood that it is necessary to be not more than% by weight. In the case of adding the particles of the powder γ, it is necessary to ensure that the content is at least 5% by weight or less. It turns out that mixing is preferable. This is because the explosion-proof filter H with y / x = 1.0 also showed an appropriate pressure loss value.
Since the minimum pressure loss value was 1.9 kPa, which is the lowest value having explosion-proof performance, y / x ≧ 1.
5 is preferable. In particular, it can be confirmed that the explosion-proof filters D and G satisfying such conditions by containing the powder γ have a much smaller variation in pressure loss value than the explosion-proof filter H whose particle diameter is limited to 300 μm or more and 600 μm or less. Was. Explosion-proof filters D and G
And H can effectively use a large particle diameter or a small particle diameter, which had to be removed by screening before.
It turns out that it is particularly preferable for improving the yield of raw materials.
【００１６】[0016]
【発明の効果】前記したように、本発明の構成によれば
防爆性能や耐目詰まり性を十分に確保した上で生産性の
高い防爆フィルタを装着した蓄電池を安価に提供できる
ことから、工業上、極めて有用である。As described above, according to the configuration of the present invention, it is possible to provide a storage battery equipped with a high-productivity explosion-proof filter while ensuring sufficient explosion-proof performance and clogging resistance. Very useful.
Claims (4)
途中に備えた蓄電池において、前記多孔性フィルタはポ
リプロピレン樹脂粉体の焼結体からなり、前記ポリプロ
ピレン樹脂粉体は３００μｍ以下の径を有する粒子を含
むとともに、６００μｍ以上の径を有する粒子を５重量
％を上限として含有することを特徴とする蓄電池。1. A storage battery provided with an explosion-proof porous filter in the middle of a gas exhaust path, wherein said porous filter is made of a sintered body of polypropylene resin powder, and said polypropylene resin powder has a diameter of 300 μm or less. A storage battery comprising particles and particles having a diameter of 600 μm or more in an amount of up to 5% by weight.
以下の径を有する粒子の割合を２０重量％以下としたこ
とを特徴とする請求項１に記載の蓄電池。2. 300 μm in polypropylene resin powder
The storage battery according to claim 1, wherein the proportion of particles having the following diameters is set to 20% by weight or less.
以上の径を有する粒子の割合をｘ重量％とし、３００μ
ｍ以下の径を有する粒子の割合をｙ重量％とした時にｙ
／ｘ≧１．５としたことを特徴とする請求項１または２
に記載の蓄電池。3. 600 μm in polypropylene resin powder
The ratio of the particles having the above diameter is x weight%, and
When the proportion of particles having a diameter of less than m
3. The method according to claim 1, wherein /x≧1.5.
A storage battery according to claim 1.
０．１７７リットル／分・ｍｍ2で気体を通過させた時
の圧力損失を１．９ｋＰａ以上としたことを特徴とする
請求項１ないし３のいずれか１項に記載の蓄電池。4. The method according to claim 1, wherein a pressure loss when gas is passed through the porous filter at a rate of 0.177 liter / min.mm 2 per unit opening area is 1.9 kPa or more. The storage battery according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000011431A JP4581168B2 (en) | 2000-01-20 | 2000-01-20 | Storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000011431A JP4581168B2 (en) | 2000-01-20 | 2000-01-20 | Storage battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001202943A true JP2001202943A (en) | 2001-07-27 |
| JP4581168B2 JP4581168B2 (en) | 2010-11-17 |
Family
ID=18539293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000011431A Expired - Fee Related JP4581168B2 (en) | 2000-01-20 | 2000-01-20 | Storage battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4581168B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006059730A (en) * | 2004-08-23 | 2006-03-02 | Matsushita Electric Ind Co Ltd | Lead-acid battery |
| JP2009165234A (en) * | 2007-12-28 | 2009-07-23 | Mitsubishi Electric Corp | Gas insulated switchgear and gas filter device |
| JP2015192020A (en) * | 2014-03-28 | 2015-11-02 | 新神戸電機株式会社 | lithium ion capacitor |
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| JPS6110853A (en) * | 1984-06-27 | 1986-01-18 | Matsushita Electric Ind Co Ltd | Enclosed lead storage battery |
| JPS61232558A (en) * | 1985-04-06 | 1986-10-16 | Sumitomo Electric Ind Ltd | Rechargeable battery |
| JPS6467861A (en) * | 1987-08-21 | 1989-03-14 | Globe Union Inc | Material and method for decelerating explosion for battery |
| JPH01221855A (en) * | 1988-03-01 | 1989-09-05 | Yuasa Battery Co Ltd | Valve device for enclosed lead-acid battery |
| JPH09330689A (en) * | 1996-06-11 | 1997-12-22 | Shin Kobe Electric Mach Co Ltd | Sealed alkaline storage battery |
| JP2001185112A (en) * | 1999-12-28 | 2001-07-06 | Matsushita Electric Ind Co Ltd | Lead battery |
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2000
- 2000-01-20 JP JP2000011431A patent/JP4581168B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5450841A (en) * | 1977-09-29 | 1979-04-21 | Yuasa Battery Co Ltd | Storage battery |
| JPS6110853A (en) * | 1984-06-27 | 1986-01-18 | Matsushita Electric Ind Co Ltd | Enclosed lead storage battery |
| JPS61232558A (en) * | 1985-04-06 | 1986-10-16 | Sumitomo Electric Ind Ltd | Rechargeable battery |
| JPS6467861A (en) * | 1987-08-21 | 1989-03-14 | Globe Union Inc | Material and method for decelerating explosion for battery |
| JPH01221855A (en) * | 1988-03-01 | 1989-09-05 | Yuasa Battery Co Ltd | Valve device for enclosed lead-acid battery |
| JPH09330689A (en) * | 1996-06-11 | 1997-12-22 | Shin Kobe Electric Mach Co Ltd | Sealed alkaline storage battery |
| JP2001185112A (en) * | 1999-12-28 | 2001-07-06 | Matsushita Electric Ind Co Ltd | Lead battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006059730A (en) * | 2004-08-23 | 2006-03-02 | Matsushita Electric Ind Co Ltd | Lead-acid battery |
| JP2009165234A (en) * | 2007-12-28 | 2009-07-23 | Mitsubishi Electric Corp | Gas insulated switchgear and gas filter device |
| JP2015192020A (en) * | 2014-03-28 | 2015-11-02 | 新神戸電機株式会社 | lithium ion capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4581168B2 (en) | 2010-11-17 |
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