JP4013726B2

JP4013726B2 - battery

Info

Publication number: JP4013726B2
Application number: JP2002302939A
Authority: JP
Inventors: 勲井門
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2002-10-17
Filing date: 2002-10-17
Publication date: 2007-11-28
Anticipated expiration: 2022-10-17
Also published as: JP2004139822A

Description

【０００１】
【発明の属する技術分野】
本発明は電池、特に電槽と蓋を接着剤で結合する電池に関するものである。
【０００２】
【従来の技術】
電池の電槽と蓋とを結合する方法の一つとして、例えば特許文献１に示されているように、電槽又は蓋に接着剤を充填させる溝を設け、溝に接着剤を充填した後電槽又は蓋の接着代部分を挿入し硬化させる方法が従来から用いられてきた。
【０００３】
この構造は図１に示したように、隔壁１０６でセル室１０７に分割された電槽１００において、電槽壁１０８の上部に接着しろ１０２ａと隔壁１０６の上部に隔壁接着しろ１０２ｂが設けられている。一方、図２および図３に示すように蓋２００には接着しろ１０２ａと隔壁接着しろ１０２ｂに対応して溝部２０１ａ、溝部２０１ｂが設けられている。溝部２０１ａ、溝部２０１ｂに接着剤（図示せず）を流し込んだ後、溝部２０１ａ、溝部２０１ｂと接着しろ１０２ａ、隔壁接着しろ１０２ｂとをそれぞれ嵌合し、接着剤を硬化させる事により、電槽１００と蓋２００を接合する。
【０００４】
このような結合方法は電池、特にバックアップ用に用いられる制御弁式鉛蓄電池では広く用いられている。近年、特に通信基地局に用いるバックアップ電源として前面に端子を配置したフロントアクセスタイプと称する横長形状の電池が用いられつつある。このような電池では短側面の前面に端子が配置され、隣接する電池の長側面同士を突き合わせて収納ラックに配置する。これらのフロントアクセスタイプの電池では１００Ａｈ前後の容量が要求されるため、電池は数１０ｋｇといった重量物となる。そのため、収納ラックへの設置作業を勘案して電池に把手を設けることが必要である。
【０００５】
電池の把手構造としてはたとえば特許文献２のように電池蓋に把手を設けたり、特許文献３のように電槽に把手を設けた構造が知られている。特許文献２のような電池蓋に把手を設ける構造は自動車用電池のように数ｋｇから１０数ｋｇ程度の比較的軽量な電池に適用できるものの、フロントアクセス電池といった重量が重い電池では蓋と電槽との接合部に負担がかかるため、殆ど採用されていない。
【０００６】
一方、電槽に把手を設ける構造を電槽と蓋との接合部に応力がかからないため、重量がかさむ電池に用いられている。把手を電槽に設ける場合には特許文献３のように電槽に把手を接合するための部材を電槽に設ける必要がある。ところがこの部材は電槽から突出して設ける必要があり、電池の最大寸法が増加する。そしてこのような電池は所定寸法の収納ラックに収納して設置するため、電池最大寸法が制限される。したがって、把手構造の寸法確保のためにセル寸法を短縮せざるを得ず、電池を高容量化する上で極めて不都合であった。
【０００７】
【特許文献１】
特開平９−２５１８５０号公報
【特許文献２】
特開平１０−４０８９４号公報
【特許文献３】
特開昭５９−２０９２６５号公報
【０００８】
【発明が解決しようとする課題】
本発明は前記したような電池把手を設けたフロントアクセスタイプの電池の電池把手とその近傍の電槽−蓋接合構造において、省スペースと電槽−蓋接着部の信頼性を両立した構造を提供することを目的とする。
【０００９】
【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に係る発明は、電槽もしくは蓋のいずれか一方の端面の外周に接着剤が充填される溝を設け、前記蓋もしくは前記電槽のいずれか一方に前記溝部に嵌合する接着しろを設け、前記接着しろに前記溝部が挿入された状態で電槽と蓋とを接着剤で結合する電池であり、前記接着しろに高さ方向の凹凸を設け、前記電槽の辺に対応する前記蓋の辺もしくは前記凹凸を形成した前記蓋の辺近傍に電池把手の第１の支持部を設けたことを特徴とする電池を示すものである。
【００１０】
また、本発明の請求項２に係る発明は、請求項１の電池において、接着しろの高さ方向の凹凸に応じて溝部に凸凹を設けた電池を示すものである。
【００１２】
さらに、本発明の請求項３に係る発明は、電池上面は長方形状を有して互いに対向しあう２つの短辺に前記電池把手を一対設け、一方の電池把手は蓋の辺近傍に設けた第１の支持部に結合し、他方の電池把手を前記電槽から突出して設けた第２の支持部に結合したことを特徴とする電池を示すものである。
【００１３】
そして、本発明の請求項４に係る発明は、前記接着しろに設けた前記凹部に対応して第１の支持部を設けたことを特徴とする電池を示すものである。
【００１４】
【発明の実施の形態】
本発明の好ましい実施の形態を図面を用いて説明する。
【００１５】
なお、電槽や蓋を示す図面は概略を示すものであって、各要素の相対的なサイズを限定するものではない。本発明の電池に用いる電槽３００は図４に示したように、隔壁３０１で複数のセル室３０２に分割されている。各セル室３０２にはそれぞれ極板群（図示せず）が収納されている。
【００１６】
電槽３００の開口端面の外周には接着しろ３０３、隔壁３０１の上端には隔壁接着しろ３０４が設けられている。本発明の電池においては、電池外周の一辺の接着しろ３０３に凹部３０５と凸部３０６が設けられている。一方、電槽３００と嵌合する蓋４００は図５および図６に示したように、接着しろ３０３および隔壁接着しろ３０４に対応した溝部４０１を設ける。
【００１７】
本発明の電池では電槽３００と蓋４００との接合部の構造に特徴があり、その他の極板群、安全弁および端子部の構成等は従来から知られている構成を適宜採用することにより、本発明の電池を得ることができる。
【００１８】
本発明の好ましい実施形態においては凹部３０５および凸部３０６は電池把手５００を支持する第１の支持部５０１を設けた蓋４００の辺４００ａに対応する電槽３００の辺３００ａの接着しろ３０３に設ける。さらに、図７に示したように、凹部３０５および凸部３０６に対応して溝部４０１にそれぞれ凸部４０２および凹部４０３を設ける。そして第１の支持部５０１は蓋の凸部４０２に対応した位置に設ける。
【００１９】
このような本発明の構造によれば、蓋４００に電池把手５００の支持部５０１を設けた場合においても十分な蓋４００−電槽３００間の接合強度を確保することができる。これは蓋４００−電槽３００の接着部において接着しろの高さ方向に凹凸を形成することによって接着面積が確保できるとともに、接着しろの形状が複雑になったこと等による。
【００２０】
さらに本発明においては第１の支持部を凸部４０２に対応して設けることにより、第１の支持部５０１の高さ寸法の一部を凸部４０２に収納でき、蓋４００の高さ寸法をより低く形成することが可能となる。その後、図８に示したように、第１の支持部５０１に把手５００を装着することにより、好ましい本発明の電池６００を得ることができる。
【００２１】
一般的に把手５００は一対設けるので、もう一方の把手５００は辺３００ａに対向する辺に設け（図示せず）、この辺における把手支持部と接着構造は前記した構成をそのまま適用すればよい。また、電池把手５００としては樹脂成形体やロープ状のものを用いることができる。
【００２２】
他の好ましい本発明の電池６００としては図９に示したように、前記した第１の支持部５０１を電池６００の短側面の辺６００ａ（辺３００ａに対応）して設け、もう一方の支持部である第２の支持部６０１を辺６００ａに対向する辺６００ｂに対応する電槽３００の側面に突出して設ける。そして第１の支持部５０１および第２の支持部６０１に電池把手５００を装着することにより、好ましい本発明の電池を得ることができる。ここで辺６００ｂ側には端子（図示せず）を位置させることが好ましい。端子側は電池収納ラック（図示せず）の前面に位置させるため、電池収納ラックの奥行寸法によって電池６００からの突出寸法が規制される辺６００ａ側とは異なり、電池収納と配線作業に支障のない範囲で電池６００から突出させることが可能であるからである。このような構成においては辺６００ｂ側の接着部構造は図１で示したような接着しろに凹凸を設けない構造を適用することが可能である。
【００２３】
【実施例】
図１、図２および図３に示す電槽１００と蓋２００を接着剤で接合し、図１０に示す従来例の１２Ｖ１００Ａｈの制御弁式鉛蓄電池（以下、電池Ａ）を構成した。ここで接着しろ１０２ａの高さｈを１０．０ｍｍとした。次に図４、図５および図６に示す電槽３００と蓋４００とを上述の接着剤で接合し、同じく１２Ｖ１００Ａｈの図９に示した制御弁式鉛蓄電池（以下、電池Ｂ）を作成した。本発明の電池Ｂにおいて接着しろ３０３の凹部３０５の高さｈ₁を７．０ｍｍ、凸部３０６の高さｈ₂を１０．０ｍｍとした。尚、これらの電池の重量はそれぞれ４０ｋｇである。また電池Ａの蓋２００には図５に示した第１の支持部５０１と同様の構造を有する支持部を短側面に対応して一対設けた。
【００２４】
これらの電池の把手を図１１に示したように、試験治具９００に固定し、試験治具９００に設けた支持台９０１を落下させることによって、試験電池９０２を３０ｃｍ落下させ、電池把手５００とその支持部に落下衝撃を加えた。その後、電池の気密状態を確認した。その結果、従来例の電池Ａでは８５回の落下衝撃で電槽−蓋間の気密が損なわれた。一方、本発明例の電池Ｂでは１００回まで落下試験を行っても依然として電槽−蓋間の気密は保持されていた。したがって、本発明の構成によれば、電槽−蓋接合部の耐落下衝撃特性を向上できることがわかる。
【００２５】
【発明の効果】
以上、説明してきたように本発明の構成によれば、蓋に電池把手を設けたフロントアクセスタイプの電池の電槽−蓋接合部の接合強度の向上と該接合構造の高さ寸法の減少を両立することによって、省スペースと電槽−蓋接着部の信頼性を両立した高容量の電池を提供できることから、工業上、極めて有用である。
【図面の簡単な説明】
【図１】従来例の電槽を示す図
【図２】従来例の蓋を示す図
【図３】従来例の蓋の電池内側面を示す図
【図４】本発明例の電池の電槽を示す図
【図５】本発明例の電池の蓋を示す図
【図６】本発明例の電池の蓋の電池内側面を示す図
【図７】本発明例の電池の断面を示す図
【図８】本発明の電池を示す図
【図９】本発明の他の電池を示す図
【図１０】実施例における従来例の電池を示す図
【図１１】実施例における落下試験方法を示す図
【符号の説明】
１００電槽
１０２ａ接着しろ
１０２ｂ隔壁接着しろ
１０６隔壁
１０７セル室
２００電槽
２０１ａ溝部
２０１ｂ溝部
３００電槽
３００ａ辺
３０１隔壁
３０２セル室
３０３接着しろ
３０４隔壁接着しろ
３０５凹部
３０６凸部
４００蓋
４００ａ辺
４０１溝部
４０２凸部
４０３凹部
５００電池把手
５０１第１の支持部
６００電池
６００ａ辺
６００ｂ辺
６０１第２の支持部
９００試験治具
９０１支持台
９０２試験電池[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a battery, and more particularly to a battery in which a battery case and a lid are bonded with an adhesive.
[0002]
[Prior art]
As one of the methods for joining the battery case and lid of the battery, for example, as shown in Patent Document 1, a groove for filling the battery case or the lid with an adhesive is provided, and the groove is filled with the adhesive. Conventionally, a method of inserting and curing the bonding margin portion of the battery case or the lid has been used.
[0003]
As shown in FIG. 1, in the battery case 100 divided into the cell chambers 107 by the partition wall 106, the structure is provided with a bonding bond 102 a on the top of the battery wall 108 and a partition bonding bond 102 b on the partition 106. Yes. On the other hand, as shown in FIGS. 2 and 3, the lid 200 is provided with groove portions 201a and 201b corresponding to the bonding margin 102a and the partition bonding margin 102b. After pouring an adhesive (not shown) into the groove part 201a and the groove part 201b, the groove part 201a and the groove part 201b are bonded to the bonding margin 102a and the partition wall bonding margin 102b, respectively, and the adhesive is cured, whereby the battery case 100 is cured. And the lid 200 are joined.
[0004]
Such a coupling method is widely used in batteries, particularly control valve type lead-acid batteries used for backup. In recent years, a battery having a horizontally long shape called a front access type in which terminals are arranged on the front surface is being used as a backup power source used particularly for a communication base station. In such a battery, terminals are arranged on the front surface of the short side surface, and the long side surfaces of the adjacent batteries are abutted to each other and arranged in the storage rack. Since these front access type batteries require a capacity of around 100 Ah, the batteries are heavy, such as several tens of kg. For this reason, it is necessary to provide a handle for the battery in consideration of the installation work on the storage rack.
[0005]
As a battery handle structure, for example, a structure in which a handle is provided on a battery lid as in Patent Document 2 or a handle is provided in a battery case as in Patent Document 3 is known. The structure in which the handle is provided on the battery lid as in Patent Document 2 can be applied to a relatively light battery of several kg to several tens of kg like an automobile battery. However, in a heavy battery such as a front access battery, the lid and Since a burden is imposed on the joint with the tank, it is hardly adopted.
[0006]
On the other hand, a structure in which a handle is provided in the battery case is used for a battery that is heavy because the joint between the battery case and the lid is not stressed. When providing a handle in a battery case, it is necessary to provide the member for joining a handle to a battery case like patent document 3 in a battery case. However, this member must be provided so as to protrude from the battery case, which increases the maximum size of the battery. And since such a battery is stored and installed in a storage rack of a predetermined size, the maximum battery size is limited. Therefore, the cell size has to be shortened to secure the size of the handle structure, which is extremely inconvenient in increasing the capacity of the battery.
[0007]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-251850 [Patent Document 2]
Japanese Patent Laid-Open No. 10-40894 [Patent Document 3]
JP 59-209265 A
[Problems to be solved by the invention]
The present invention provides a structure that achieves both space saving and reliability of the battery case-lid bonding part in the battery handle of the front access type battery provided with the battery handle as described above and the battery case-lid bonding structure in the vicinity thereof. The purpose is to do.
[0009]
[Means for Solving the Problems]
To solve the problems described above, the invention according to claim 1 of the present invention is provided with a groove for adhesive is filled into either the outer periphery of one end face of the container or lid, said lid also includes properly the electric The battery is provided with an adhesive margin that fits into the groove portion in one of the tanks, and the battery case and the lid are bonded with an adhesive in a state in which the groove portion is inserted into the adhesive margin. A battery comprising a first support portion of a battery handle provided in the vicinity of the lid side corresponding to the side of the battery case or in the vicinity of the lid side where the irregularity is formed. It is.
[0010]
The invention according to claim 2 of the present invention shows the battery according to claim 1, wherein the groove is provided with unevenness according to the unevenness in the height direction of the bonding margin.
[0012]
Further, the invention according to claim 3 of the present invention, conductive Ikegami surface provided in pairs the battery handle two short sides mutually facing each other with a rectangular, one battery handle is provided on the straight sides of the lid The battery is characterized in that it is coupled to a first support portion and the other battery handle is coupled to a second support portion that protrudes from the battery case.
[0013]
The invention according to claim 4 of the present invention shows a battery which is characterized in that the previous SL provided a first support portion corresponding to the recess formed on the white adhesive.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described with reference to the drawings.
[0015]
In addition, drawing which shows a battery case and a lid | cover shows an outline, and does not limit the relative size of each element. The battery case 300 used in the battery of the present invention is divided into a plurality of cell chambers 302 by partition walls 301 as shown in FIG. Each cell chamber 302 accommodates a group of electrode plates (not shown).
[0016]
Adhesive margin 303 is provided on the outer periphery of the opening end surface of battery case 300, and partition adhesive margin 304 is provided on the upper end of partition 301. In the battery of the present invention, a concave portion 305 and a convex portion 306 are provided in the bonding margin 303 on one side of the outer periphery of the battery. On the other hand, as shown in FIGS. 5 and 6, the lid 400 fitted with the battery case 300 is provided with a groove 401 corresponding to the bonding margin 303 and the partition bonding margin 304.
[0017]
The battery of the present invention is characterized by the structure of the joint portion between the battery case 300 and the lid 400, and other electrode plate groups, safety valve and terminal portion configurations, etc., by appropriately adopting conventionally known configurations, The battery of the present invention can be obtained.
[0018]
In a preferred embodiment of the present invention, the concave portion 305 and the convex portion 306 are provided on the bonding margin 303 of the side 300 a of the battery case 300 corresponding to the side 400 a of the lid 400 provided with the first support portion 501 for supporting the battery handle 500. . Further, as shown in FIG. 7, a convex portion 402 and a concave portion 403 are provided in the groove portion 401 corresponding to the concave portion 305 and the convex portion 306, respectively. The first support portion 501 is provided at a position corresponding to the convex portion 402 of the lid.
[0019]
According to such a structure of the present invention, a sufficient bonding strength between the lid 400 and the battery case 300 can be ensured even when the support portion 501 of the battery handle 500 is provided on the lid 400. This is because the bonding area can be secured by forming irregularities in the bonding margin height direction at the bonding portion of the lid 400 and the battery case 300, and the shape of the bonding margin is complicated.
[0020]
Furthermore, in the present invention, by providing the first support portion corresponding to the convex portion 402, a part of the height dimension of the first support portion 501 can be stored in the convex portion 402, and the height dimension of the lid 400 can be increased. It can be formed lower. Thereafter, as shown in FIG. 8, a preferred battery 600 of the present invention can be obtained by attaching the handle 500 to the first support portion 501.
[0021]
In general, since a pair of handles 500 are provided, the other handle 500 is provided on a side opposite to the side 300a (not shown), and the above-described configuration may be applied as it is to the handle support portion and the adhesive structure on this side. Further, as the battery handle 500, a resin molded body or a rope-shaped one can be used.
[0022]
As another preferable battery 600 of the present invention, as shown in FIG. 9, the first support portion 501 described above is provided corresponding to the side 600a on the short side surface of the battery 600 (corresponding to the side 300a), and the other support portion. The second support portion 601 is provided so as to protrude from the side surface of the battery case 300 corresponding to the side 600b facing the side 600a. A preferable battery of the present invention can be obtained by attaching the battery grip 500 to the first support portion 501 and the second support portion 601. Here, a terminal (not shown) is preferably positioned on the side 600b side. Since the terminal side is positioned in front of a battery storage rack (not shown), unlike the side 600a side where the projecting dimension from the battery 600 is regulated by the depth of the battery storage rack, the battery storage and wiring work is hindered. This is because it is possible to project from the battery 600 within a range. In such a configuration, it is possible to apply a structure in which the unevenness is not provided in the bonding margin as shown in FIG.
[0023]
【Example】
The battery case 100 and the lid 200 shown in FIG. 1, FIG. 2 and FIG. 3 were joined with an adhesive to constitute a conventional 12V100Ah control valve type lead storage battery (hereinafter referred to as battery A) shown in FIG. Here, the height h of the bonding margin 102a was set to 10.0 mm. Next, the battery case 300 and the lid 400 shown in FIG. 4, FIG. 5 and FIG. 6 were joined with the above-mentioned adhesive, and the control valve type lead storage battery (hereinafter referred to as the battery B) shown in FIG. . In the battery B of the present invention, the height h ₁ of the concave portion 305 of the bonding margin 303 was 7.0 mm, and the height h ₂ of the convex portion 306 was 10.0 mm. Each of these batteries weighs 40 kg. Further, a pair of support portions having the same structure as the first support portion 501 shown in FIG.
[0024]
As shown in FIG. 11, these battery handles are fixed to the test jig 900, and the support base 901 provided on the test jig 900 is dropped, thereby dropping the test battery 902 by 30 cm. A drop impact was applied to the support. Then, the airtight state of the battery was confirmed. As a result, in the battery A of the conventional example, the airtightness between the battery case and the lid was impaired by 85 drop impacts. On the other hand, in the battery B of the present invention example, the airtightness between the battery case and the lid was still maintained even when the drop test was performed up to 100 times. Therefore, according to the structure of this invention, it turns out that the drop impact resistance characteristic of a battery case-lid junction part can be improved.
[0025]
【The invention's effect】
As described above, according to the configuration of the present invention, the joint strength of the battery case-lid joint portion of the front access type battery having the battery handle on the lid is improved and the height dimension of the joint structure is reduced. By achieving both, it is possible to provide a high-capacity battery that achieves both space saving and the reliability of the battery case-lid bonding part, which is extremely useful industrially.
[Brief description of the drawings]
FIG. 1 is a diagram showing a battery case of a conventional example. FIG. 2 is a diagram showing a lid of a conventional example. FIG. 3 is a diagram showing a battery inner surface of the lid of a conventional example. FIG. 5 is a view showing a battery cover of an example of the present invention. FIG. 6 is a view showing an inner surface of the battery cover of the example of the invention. FIG. 7 is a cross-sectional view of a battery of the example of the invention. FIG. 8 is a diagram showing a battery of the present invention. FIG. 9 is a diagram showing another battery of the present invention. FIG. 10 is a diagram showing a conventional battery in an embodiment. FIG. 11 is a diagram showing a drop test method in the embodiment. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Battery case 102a Adhesive margin 102b Partition adhesive margin 106 Partition 107 Cell chamber 200 Battery case 201a Groove portion 201b Groove portion 300 Battery case 300a Side 301 Partition wall 302 Cell chamber 303 Adhesive margin 304 Partition adhesive margin 305 Depression portion 306 Protrusion portion 400 Lid portion 400a Side portion 402 Convex part 403 Concave part 500 Battery handle 501 First support part 600 Battery 600a Side 600b Side 601 Second support part 900 Test jig 901 Support base 902 Test battery

Claims

A groove provided adhesive either on the outer periphery of one end face of the container or lid is filled, the lid also is properly provided white adhesive fits the groove in one of said battery container, white the adhesive The battery case is connected to the battery case and the lid with an adhesive in a state where the groove portion is inserted, and a height unevenness is provided in the bonding margin, and the side of the lid corresponding to the side of the battery case or the A battery characterized in that a first support part of a battery handle is provided in the vicinity of the side of the lid on which the irregularities are formed.

2. The battery according to claim 1, wherein the groove is provided with unevenness according to the unevenness in the height direction of the bonding margin.

The upper surface of the battery has a rectangular shape, and a pair of the battery handles are provided on two short sides facing each other. One battery handle is coupled to a first support portion provided in the vicinity of the side of the lid, The battery according to claim 1 , wherein a battery handle is coupled to a second support portion provided so as to protrude from the battery case.

2. The battery according to claim 1 , wherein the first support portion is provided corresponding to the concave portion provided in the bonding margin.