JP2001210293A - Assembled battery - Google Patents
Assembled batteryInfo
- Publication number
- JP2001210293A JP2001210293A JP2000020785A JP2000020785A JP2001210293A JP 2001210293 A JP2001210293 A JP 2001210293A JP 2000020785 A JP2000020785 A JP 2000020785A JP 2000020785 A JP2000020785 A JP 2000020785A JP 2001210293 A JP2001210293 A JP 2001210293A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- positive electrode
- current collecting
- alkaline
- alkaline cells
- 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
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、集合電池、特に、
複数個のアルカリ単電池が配列されて一体的に固定され
た集合電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery pack,
The present invention relates to an assembled battery in which a plurality of alkaline cells are arranged and integrally fixed.
【０００２】[0002]
【従来の技術】電気自動車や無人搬送車の動力源とし
て、高エネルギー密度で高出力のアルカリ蓄電池が要望
されており、そのようなアルカリ蓄電池として、アルカ
リ単電池を集合させた集合電池が提供されている。2. Description of the Related Art A high-energy density, high-output alkaline storage battery is demanded as a power source of an electric vehicle or an automatic guided vehicle. As such an alkaline storage battery, an assembled battery in which alkaline single cells are assembled is provided. ing.
【０００３】図１２に示すように、このような集合電池
１は、通常、複数個の独立したアルカリ単電池２と、こ
れらのアルカリ単電池２を直線状に配列して一体的に固
定するためのサイドプレート３ａおよびエンドプレート
３ｂを備えた固定部材３とを備えている。各アルカリ単
電池２は、電槽４内に正極群と負極群とを含む電池要素
（図示せず）および電解液を封入したものであり、電槽
４の上面に正極端子５および負極端子６を有している。
そして、各アルカリ単電池２の正極端子５および負極端
子６は、電槽４の上部において、隣接するアルカリ単電
池２の対応する正極端子５および負極端子６と接続バー
７を用いて電気的に直列接続されている。なお、各アル
カリ単電池２の電槽４は、隣接するアルカリ単電池２と
の当接面に図示しない上下方向の溝を有しており、この
溝により、隣接し合うアルカリ単電池２間には、アルカ
リ電池において特有な充放電時の発熱による熱を冷却す
るための通気孔（図示せず）が形成されている。As shown in FIG. 12, such an assembled battery 1 generally has a plurality of independent alkaline cells 2 and these alkaline cells 2 are linearly arranged and fixed integrally. And a fixing member 3 having a side plate 3a and an end plate 3b. Each alkaline cell 2 has a battery element (not shown) including a positive electrode group and a negative electrode group and an electrolyte sealed in a battery case 4, and a positive electrode terminal 5 and a negative electrode terminal 6 are provided on the upper surface of the battery case 4. have.
Then, the positive electrode terminal 5 and the negative electrode terminal 6 of each alkaline cell 2 are electrically connected to the corresponding positive electrode terminal 5 and negative electrode terminal 6 of the adjacent alkaline cell 2 and the connection bar 7 in the upper part of the battery case 4. They are connected in series. In addition, the battery case 4 of each alkaline cell 2 has a vertical groove (not shown) on the contact surface with the adjacent alkaline cell 2, and this groove allows a space between the adjacent alkaline cells 2. Is formed with a vent (not shown) for cooling heat generated by heat generated during charging and discharging, which is characteristic of an alkaline battery.
【０００４】[0004]
【発明が解決しようとする課題】上述の集合電池１は、
各アルカリ単電池２の電槽４の上方に突出する正極端子
５および負極端子６が配置されているため、各アルカリ
単電池２の高さが大きくなり、その結果、全体を小型化
するのが困難である。また、隣接し合うアルカリ単電池
２間の正極端子５と負極端子６とを電槽４の上部におい
て接続バー７を用いて接続しているため、自ずと電池要
素間の接続距離が長くなり、結果的に電池要素間の接続
抵抗が増加して集合電池１の期待特性が得られにくい。
さらに、各アルカリ単電池２の電池要素間を接続するた
めの正極端子５、負極端子６および接続バー７が必要に
なるため、部品点数が増加し、低コスト化および軽量化
を図るのが困難である。The above-mentioned assembled battery 1
Since the positive electrode terminal 5 and the negative electrode terminal 6 protruding above the battery case 4 of each alkaline cell 2 are arranged, the height of each alkaline cell 2 is increased, and as a result, the overall size is reduced. Have difficulty. Further, since the positive electrode terminal 5 and the negative electrode terminal 6 between the adjacent alkaline cells 2 are connected to each other using the connection bar 7 at the upper part of the battery case 4, the connection distance between the battery elements naturally becomes longer. As a result, the connection resistance between the battery elements increases, and it is difficult to obtain the expected characteristics of the assembled battery 1.
Furthermore, since the positive electrode terminal 5, the negative electrode terminal 6, and the connection bar 7 for connecting the battery elements of each alkaline cell 2 are required, the number of parts increases, and it is difficult to reduce cost and weight. It is.
【０００５】本発明の目的は、複数個のアルカリ単電池
からなる集合電池の小型化および軽量化を図り、さらに
その電池特性を高めることにある。An object of the present invention is to reduce the size and weight of an assembled battery composed of a plurality of alkaline cells and to further enhance the battery characteristics.
【０００６】[0006]
【課題を解決するための手段】本発明に係る集合電池
は、外壁面に通気用の溝を備えた壁部を有する電槽の内
部に正極群および負極群を含む電池要素を収容した複数
個のアルカリ単電池と、複数個の当該アルカリ単電池
を、外壁面同士を密接させながら配列した集合状態で一
体的に固定するための固定部材とを備えている。ここ
で、配列された複数個のアルカリ単電池の夫々は、電池
要素が壁部を通じて隣接するアルカリ単電池の電池要素
と電気的に接続されている。According to the present invention, there is provided an assembled battery including a plurality of battery elements each including a positive electrode group and a negative electrode group housed in a battery case having a wall portion provided with a ventilation groove on an outer wall surface. And a fixing member for integrally fixing the plurality of alkaline cells in an assembled state in which the outer wall surfaces are closely contacted with each other. Here, each of the arranged plurality of alkaline cells is electrically connected to a battery element of an adjacent alkaline cell through a wall portion.
【０００７】本発明の他の見地に係る集合電池は、外壁
面に通気用の溝を備えかつ貫通孔を備えた壁部を有する
電槽の内部に正極群および負極群を含む電池要素を収容
した複数個のアルカリ単電池と、複数個の当該アルカリ
単電池を、外壁面同士を密接させながら配列した集合状
態で一体的に固定するための固定部材と、隣接し合うア
ルカリ単電池間に形成された、貫通孔による一連の連続
孔内に配置された導電体とを備えている。ここで、配列
された複数個のアルカリ単電池の夫々は、電池要素が導
電体を通じて隣接するアルカリ単電池の電池要素と電気
的に接続されている。According to another aspect of the present invention, there is provided an assembled battery in which a battery element including a positive electrode group and a negative electrode group is housed in a battery case having a ventilation groove on an outer wall surface and a wall having a through hole. A plurality of alkaline cells, and a fixing member for integrally fixing the plurality of alkaline cells in an assembled state in which outer wall surfaces are closely contacted, and formed between adjacent alkaline cells. And a conductor arranged in a series of continuous holes formed by through holes. Here, each of the arranged plurality of alkaline cells is electrically connected to a battery element of an adjacent alkaline cell through a conductor.
【０００８】この集合電池では、例えば、導電体と連続
孔との間に弾性シール材が配置されている。また、導電
体は、例えば、連続孔の内面に圧接している。さらに、
電池要素は、例えば、正極群および負極群をそれぞれ個
別に集電するための集電体を有しており、当該集電体が
導電体に対して電気的に接続されている。この場合、集
電体は、例えば、貫通孔の周縁部近傍において壁部に圧
入された一連の環状突起を有している。さらに、この集
合電池において、隣接し合うアルカリ単電池間には、例
えば、上述の溝による通気孔が形成されている。また、
隣接し合うアルカリ単電池同士は、例えば接着されてい
る。[0008] In this battery pack, for example, an elastic sealing material is arranged between the conductor and the continuous hole. The conductor is in pressure contact with the inner surface of the continuous hole, for example. further,
The battery element has, for example, a current collector for individually collecting the positive electrode group and the negative electrode group, and the current collector is electrically connected to the conductor. In this case, the current collector has, for example, a series of annular protrusions pressed into the wall near the peripheral edge of the through hole. Further, in this assembled battery, for example, a vent hole formed by the above-described groove is formed between adjacent alkaline cells. Also,
Adjacent alkaline cells are bonded, for example.
【０００９】なお、本発明において、上述の正極群およ
び負極群のそれぞれは、例えば、集電タブを個別に有す
る複数の電極と、複数の当該電極の夫々の集電タブが集
合して一体的に接続された集電体とを備えている。ここ
で、集電体から最も離れた電極の集電タブの厚さは、集
電体に最も近接した電極の集電タブの厚さよりも大きく
設定されている。In the present invention, for example, each of the above-described positive electrode group and negative electrode group is formed by integrating a plurality of electrodes each having a current collecting tab and a plurality of current collecting tabs of the electrodes. And a current collector connected to the current collector. Here, the thickness of the current collecting tab of the electrode farthest from the current collector is set to be larger than the thickness of the current collecting tab of the electrode closest to the current collector.
【００１０】また、本発明において用いられる、他の形
態の正極群および負極群のそれぞれは、例えば、集電タ
ブを個別に有する複数の電極と、複数の当該電極の夫々
の集電タブが集合して一体的に接続された集電体とを備
えている。ここで、複数の電極の夫々の集電タブは、集
電体に最も近接した電極のものから集電体から最も離れ
た電極のものへ、厚さが順に大きくなるよう設定されて
いる。Further, each of the positive electrode group and the negative electrode group of another form used in the present invention includes, for example, a plurality of electrodes each having a current collecting tab and a plurality of current collecting tabs of the electrodes. And a current collector connected integrally. Here, each of the current collecting tabs of the plurality of electrodes is set so that the thickness increases in order from the electrode closest to the current collector to the electrode farthest from the current collector.
【００１１】本発明において用いられる、さらに他の形
態の正極群および負極群のそれぞれは、例えば、集電タ
ブを個別に有する複数の電極と、複数の当該電極の夫々
の集電タブが集合して接続された集電体とを備えてい
る。ここで、複数の当該電極の夫々の集電タブは、集電
体に最も近接した電極のものから集電体から最も離れた
電極のものへの順に、複数毎に厚さが段階的に大きくな
るよう設定されており、同じ厚さの集電タブ毎に集合し
て集電体に対して個別に溶接されている。In each of the positive electrode group and the negative electrode group in still another form used in the present invention, for example, a plurality of electrodes each having a current collecting tab and a plurality of current collecting tabs of the electrodes are assembled. And a current collector connected to it. Here, each of the current collecting tabs of the plurality of electrodes has a gradually increasing thickness for each of the plurality of electrodes in order from the electrode closest to the current collector to the electrode farthest from the current collector. It is set so that the current collecting tabs of the same thickness are gathered and individually welded to the current collector.
【００１２】本発明において用いられる、さらに他の形
態の正極群および負極群のそれぞれは、例えば、第１集
電タブを個別に有する複数の電極からなる第１電極群
と、第１電極群に隣接して配置されかつ第２集電タブを
個別に有する複数の電極からなる第２電極群と、第１集
電タブおよび第２集電タブが接続された集電体とを備え
ている。ここで、第２電極群は第１電極群よりも集電体
に近接して配置されかつ第１集電タブの厚さが第２集電
タブの厚さに比べて大きく設定されており、第１集電タ
ブおよび第２集電タブは、それぞれ別々に集合して集電
体に対して個別に溶接されている。Each of the positive electrode group and the negative electrode group in still another form used in the present invention includes, for example, a first electrode group including a plurality of electrodes each having a first current collecting tab, and a first electrode group. A second electrode group including a plurality of electrodes arranged adjacent to each other and having a second current collecting tab individually, and a current collector to which the first current collecting tab and the second current collecting tab are connected are provided. Here, the second electrode group is disposed closer to the current collector than the first electrode group, and the thickness of the first current collection tab is set to be larger than the thickness of the second current collection tab. The first current collecting tab and the second current collecting tab are separately assembled and individually welded to the current collector.
【００１３】[0013]
【作用】本発明に係る集合電池において、複数個のアル
カリ単電池は、固定部材により、外壁面同士を密接させ
ながら配列した集合状態で一体的に固定される。この
際、アルカリ単電池間には、それぞれの電槽の外壁面の
溝により、アルカリ単電池の充放電過程の発熱による熱
を冷却するための通気孔が形成され得る。このような集
合電池は、各アルカリ単電池の電槽内に収容された電池
要素が隣接するアルカリ単電池の電槽内の電池要素と電
槽の壁部を通じて電気的に接続されているので、従来の
ものに比べて高さが抑制され、小型化することができ
る。また、各アルカリ単電池の電池要素が電槽の壁部を
通じて接続されているため、電池要素間の接続距離を短
縮することができ、電池要素間の接続抵抗を抑制するこ
とができる。さらに、この集合電池は、従来のものでは
必要であった電池要素間を接続するための正極端子、負
極端子および接続バーが不要になるため、部品点数を抑
制することもできる。In the assembled battery according to the present invention, the plurality of alkaline cells are integrally fixed by the fixing member in an assembled state in which the outer wall surfaces are arranged in close contact with each other. At this time, a vent hole for cooling heat generated by heat generated during the charging / discharging process of the alkaline cell can be formed between the alkaline cells by grooves on the outer wall surface of each battery case. In such an assembled battery, since the battery elements housed in the battery case of each alkaline cell are electrically connected to the battery elements in the battery case of the adjacent alkaline cell through the wall of the battery case, The height can be suppressed as compared with the conventional one, and the size can be reduced. In addition, since the battery elements of each alkaline cell are connected through the wall of the battery case, the connection distance between the battery elements can be reduced, and the connection resistance between the battery elements can be suppressed. Furthermore, since the positive electrode terminal, the negative electrode terminal, and the connection bar for connecting the battery elements, which are required in the conventional battery, are not required in this assembled battery, the number of components can be reduced.
【００１４】本発明の他の見地に係る集合電池におい
て、複数個のアルカリ単電池は、固定部材により、外壁
面同士を密接させながら配列した集合状態で一体的に固
定される。この際、アルカリ単電池間には、それぞれの
電槽の外壁面の溝により、アルカリ単電池の充放電過程
の発熱による熱を冷却するための通気孔が形成され得
る。このような集合電池は、各アルカリ単電池の電池要
素間が電槽の壁部に設けられた連続孔内の導電体により
電気的に接続されているので、従来のものに比べて高さ
が抑制され、小型化することができる。また、各アルカ
リ単電池の電池要素が上述のような導電体を通じて接続
されているため、電池要素間の接続距離を短縮すること
ができ、電池要素間の接続抵抗を抑制することができ
る。さらに、この集合電池は、従来のものでは必要であ
った電池要素間を接続するための正極端子、負極端子お
よび接続バーが不要になるため、部品点数を削減するこ
ともできる。In a battery pack according to another aspect of the present invention, a plurality of alkaline cells are integrally fixed by a fixing member in an assembled state in which outer wall surfaces are arranged in close contact with each other. At this time, a vent hole for cooling heat generated by heat generated during the charging / discharging process of the alkaline cell can be formed between the alkaline cells by grooves on the outer wall surface of each battery case. In such an assembled battery, since the battery elements of each alkaline cell are electrically connected by a conductor in a continuous hole provided in the wall of the battery case, the height is higher than that of a conventional battery. It can be suppressed and downsized. Further, since the battery elements of each alkaline cell are connected through the above-described conductor, the connection distance between the battery elements can be reduced, and the connection resistance between the battery elements can be suppressed. Further, in this assembled battery, a positive electrode terminal, a negative electrode terminal, and a connection bar for connecting between battery elements, which are required in the conventional battery, become unnecessary, so that the number of parts can be reduced.
【００１５】[0015]
【発明の実施の形態】図１および図２を参照して、本発
明の実施の一形態に係る集合電池を説明する。図におい
て、集合電池１０は、１０個のアルカリ単電池１１と、
これらのアルカリ単電池１１を一体に固定するための固
定部材１２とを主に備えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1 and FIG. 2, an assembled battery according to an embodiment of the present invention will be described. In the figure, an assembled battery 10 includes ten alkaline cells 11,
A fixing member 12 for integrally fixing these alkaline cells 11 is mainly provided.
【００１６】各アルカリ単電池１１は、ニッケル・カド
ミウム蓄電池、ニッケル・水素蓄電池、ニッケル・亜鉛
蓄電池などのアルカリ蓄電池であり、図３に示すよう
に、電槽１３、当該電槽１３内に収容された電池要素１
４および電解液（図示せず）、電槽１３を気密に封止す
るための蓋体１５並びに安全弁１６を主に備えている。
電槽１３は、例えば難燃性ポリプロピレン樹脂等の樹脂
材料からなる、上部に開口部１３ａを有する概ね直方体
形状の容器であり、その両主面側の壁部１３ｂ，１３ｂ
の外壁面１３ｃに上下方向に延びる通気溝１７を有して
いる。また、電槽１３の両側面１３ｄ，１３ｄには、固
定部材１２を配置するための固定溝１８が上下の２列に
平行に形成されている。さらに、電槽１３の両壁部１３
ｂ，１３ｂにおいて、開口部１３ａの近傍には、概ね対
角線上の位置にそれぞれ円形の貫通孔１９，１９が形成
されている。Each of the alkaline cells 11 is an alkaline storage battery such as a nickel-cadmium storage battery, a nickel-hydrogen storage battery, or a nickel-zinc storage battery. As shown in FIG. Battery element 1
4, an electrolyte (not shown), a lid 15 for hermetically sealing the battery case 13, and a safety valve 16.
The battery case 13 is a substantially rectangular parallelepiped container having an opening 13a at an upper portion and made of a resin material such as a flame-retardant polypropylene resin, for example, and walls 13b, 13b on both main surfaces thereof.
Has a ventilation groove 17 extending vertically. In addition, fixing grooves 18 for disposing the fixing members 12 are formed on both side surfaces 13d, 13d of the battery case 13 in parallel with the upper and lower two rows. Furthermore, both walls 13 of the battery case 13
In b and 13b, circular through holes 19 and 19 are formed near diagonal lines near the opening 13a, respectively.
【００１７】電池要素１４は、図４に示すように、一対
の正極群２０と負極群３０とを備えている。正極群２０
は、図４および図６に示すように、一定の間隔を設けて
平行に配列された複数の正極２２と、正極集電端子（集
電体の一例）２３とを備えている。各正極２２は、図５
に示すように、導電性材料からなる板状の電極板２４の
表面に所定の活物質２５を配置したものであり、電極板
２４は、そこから突出した集電タブ２６を一体的に有し
ている。この集電タブ２６の幅（Ｗ）は、全ての正極２
２において、実質的に同じに設定されている。As shown in FIG. 4, the battery element 14 includes a pair of a positive electrode group 20 and a negative electrode group 30. Positive electrode group 20
As shown in FIG. 4 and FIG. 6, the device includes a plurality of positive electrodes 22 arranged at regular intervals in parallel and a positive electrode current collecting terminal (an example of a current collector) 23. Each positive electrode 22 is shown in FIG.
As shown in FIG. 2, a predetermined active material 25 is disposed on the surface of a plate-shaped electrode plate 24 made of a conductive material, and the electrode plate 24 integrally has a current collecting tab 26 protruding therefrom. ing. The width (W) of this current collecting tab 26 is
2 are set substantially the same.
【００１８】一方、集電タブ２６の長さ（Ｌ）は、図６
に示すように、正極２２毎に異なっており、正極集電端
子２３の近傍に配置されている正極２２のものから正極
集電端子２３から最も離れた位置に配置されている正極
２２のものにかけて順次長くなるように設定されてい
る。また、集電タブ２６の厚さ（Ｔ）は、正極２２と正
極集電板２３との位置関係により２種類に設定されてい
る。すなわち、複数の正極２２のうち、正極集電端子２
３から離れた側の半数の第１群２２ａのものの厚さが他
の半数の正極２２、すなわち、正極集電端子２３に近い
側の半数の第２群２２ｂのものの厚さよりも大きく設定
されている。より具体的には、第１群２２ａの正極２２
の集電タブ２６の厚さは、通常、第２群２２ｂの正極２
２の集電タブ２６の厚さの１倍を超えかつ２倍以下、好
ましくは１．５倍に設定されている。On the other hand, the length (L) of the current collecting tab 26 is shown in FIG.
As shown in the figure, the positive electrode 22 differs from the positive electrode 22 disposed near the positive current collecting terminal 23 to the positive electrode 22 disposed farthest from the positive current collecting terminal 23. It is set so that it becomes longer sequentially. The thickness (T) of the current collecting tab 26 is set to two types depending on the positional relationship between the positive electrode 22 and the positive electrode current collecting plate 23. That is, of the plurality of positive electrodes 22, the positive current collecting terminal 2
The thickness of the half of the first group 22a on the side distant from 3 is set to be larger than the thickness of the half of the second group 22b on the side near the other half of the positive electrodes 22, that is, the positive electrode current collecting terminal 23. I have. More specifically, the positive electrode 22 of the first group 22a
The thickness of the current collecting tab 26 of the positive electrode 2 of the second group 22b is usually
The thickness of the current collecting tab 26 is set to be more than 1 and not more than 2 times, preferably 1.5 times the thickness of the current collecting tab 26.
【００１９】ところで、導電体の電気抵抗Ｒは、導電体
の電気伝導度をρ、断面積をＳ、長さをＬとすると、Ｒ
＝ρ・Ｌ／Ｓの関係になり、導電体の長さに比例しかつ
導電体の断面積に反比例することになる。このため、集
電タブ２６は、厚さを大きく設定すると（すなわち、断
面積を大きく設定すると）、電気抵抗値が小さくなる。
よって、正極群２０において、第１群２２ａ側の正極２
２の集電タブ２６の電気抵抗は、第２群２２ｂ側の正極
２２の集電タブ２６のそれに比べて小さくなる。By the way, assuming that the electric conductivity of the conductor is ρ, the cross-sectional area is S, and the length is L, the electric resistance R of the conductor is R
= Ρ · L / S, which is proportional to the length of the conductor and inversely proportional to the cross-sectional area of the conductor. Therefore, when the thickness of the current collecting tab 26 is set to be large (that is, when the cross-sectional area is set to be large), the electric resistance value becomes small.
Therefore, in the positive electrode group 20, the positive electrode 2 on the first group 22a side
The electrical resistance of the second current collection tab 26 is smaller than that of the current collection tab 26 of the positive electrode 22 on the second group 22b side.
【００２０】正極集電端子２３は、各正極２２の集電タ
ブ２６を集合させて固定するためのものであり、電池要
素１４の端部に配置されておりかつ電槽１３の一方の貫
通孔１９と対向している。正極集電端子２３の中央部お
よび下部には、図６に示すように、それぞれ集電タブ２
６を固定するための第１固定部２３ａおよび第２固定部
２３ｂが形成されている。そして、第１固定部２３ａに
は、第１群２２ａ側の正極２２の集電タブ２６が集合し
て一体的に溶接されており、また、第２固定部２３ｂに
は、第２群２２ｂ側の正極２２の集電タブ２６が集合し
て一体的にレーザー溶接されている。ここでは、同じ厚
さの集電タブ２６が一群を形成し、その群毎が正極集電
端子２３に対して個別にレーザー溶接されていることに
なるため、レーザー溶接条件を集電タブ２６の群毎に適
切に設定することができ、結果的に溶接部の電気抵抗値
の増大を抑制しながら安定な溶接が達成されることにな
る。また、レーザー溶接機の出力を集電タブ２６の群毎
に最適化できるため、レーザー溶接時のエネルギーコス
トを抑制することもできる。The positive electrode current collecting terminal 23 is for collecting and fixing the current collecting tabs 26 of the respective positive electrodes 22. The positive electrode current collecting terminal 23 is arranged at an end of the battery element 14 and has one through hole of the battery case 13. 19. As shown in FIG. 6, the current collecting tabs 2 are provided at the center and the lower portion of the positive electrode current collecting terminal 23, respectively.
6 are formed with a first fixing portion 23a and a second fixing portion 23b. The current collecting tabs 26 of the positive electrode 22 on the first group 22a side are gathered and integrally welded to the first fixing part 23a, and the second group 22b side is formed on the second fixing part 23b. The current collecting tabs 26 of the positive electrode 22 are collectively laser welded. Here, the current collecting tabs 26 having the same thickness form a group, and each group is individually laser-welded to the positive electrode current collecting terminal 23. It can be set appropriately for each group, and as a result, stable welding can be achieved while suppressing an increase in the electric resistance value of the welded portion. Further, since the output of the laser welding machine can be optimized for each group of the current collecting tabs 26, the energy cost during laser welding can be suppressed.
【００２１】また、正極集電端子２３には、円環状に設
けられた、断面形状が楔形の環状突起２７が設けられて
いる。この環状突起２７は、電槽１３の壁部１３ｂに向
けて突出している。また、当該環状突起２７で囲まれた
内側には、同じく電槽１３の壁部１３ｂ側に向けて突出
する複数の溶接突起２８が形成されている。The positive electrode current collecting terminal 23 is provided with an annular projection 27 having an annular shape and a wedge-shaped cross section. The annular protrusion 27 protrudes toward the wall 13 b of the battery case 13. A plurality of welding projections 28 are formed on the inner side surrounded by the annular projections 27 and also project toward the wall portion 13b of the battery case 13.
【００２２】一方、負極群３０は、図４に示すように、
一定の間隔を設けて平行に配列された複数の負極３２
と、負極集電端子（集電体の一例）３３とを備えてお
り、これらは、電池化学的要素を除き、正極群２０と同
様に構成されている。この負極群３０は、図４に示すよ
うに、各負極３２が図示しないセパレータを挟んで正極
２２と交互に配置されるよう正極群２０に対して組み合
されており、負極集電端子３３が正極集電端子２３の対
角位置に配置されている。On the other hand, as shown in FIG.
A plurality of negative electrodes 32 arranged in parallel with a certain interval
And a negative electrode current collecting terminal (an example of a current collector) 33, which are configured similarly to the positive electrode group 20 except for battery chemical elements. As shown in FIG. 4, the negative electrode group 30 is combined with the positive electrode group 20 such that the negative electrodes 32 are alternately arranged with the positive electrode 22 with a separator (not shown) interposed therebetween. It is arranged at a diagonal position of the positive electrode current collecting terminal 23.
【００２３】蓋体１５は、電槽１３の開口部１３ａを気
密に封止するためのものであり、中央部に孔部４０を有
している。この孔部４０は、安全弁１６により閉鎖され
ている。安全弁１６は、アルカリ単電池１１の充放電中
にガスが発生した場合、このガスを外部に排出し、電槽
１３の内圧が一定以上に高まらないように制御するため
のものである。The lid 15 is for hermetically sealing the opening 13a of the battery case 13, and has a hole 40 in the center. The hole 40 is closed by the safety valve 16. When a gas is generated during charging / discharging of the alkaline cell 11, the safety valve 16 discharges the gas to the outside and controls the internal pressure of the battery case 13 so as not to increase to a certain level or more.
【００２４】上述のアルカリ単電池１１は、図１に示す
ように、電槽１３の外壁面１３ｃ同士を密接させなが
ら、直線状に配列されている。ここで、各アルカリ単電
池１１は、図２に示すように、その電池要素１４の正極
集電端子２３および負極集電端子３３が隣接するアルカ
リ単電池１１の電池要素１４のそれぞれ負極集電端子３
３および正極集電端子２３と対向するように交互に向き
を入れ替えて配列されており、直列接続されている。ま
た、両端に位置するアルカリ単電池１１，１１のうち、
一方のアルカリ単電池１１は、その正極集電端子２３が
直接正極端子４１に溶接され、また、他方のアルカリ単
電池１１は、その負極集電端子３３が直接負極端子４２
に溶接されており、これらの端子４１，４２は、蓋体１
５を通じて上方に突出している。As shown in FIG. 1, the above-mentioned alkaline cells 11 are arranged in a straight line with the outer wall surfaces 13c of the battery case 13 being in close contact with each other. Here, as shown in FIG. 2, each of the alkaline cells 11 has a positive current collecting terminal 23 and a negative current collecting terminal 33 of the battery element 14. 3
3 and the positive electrode current collecting terminal 23 are alternately arranged so as to face each other and are connected in series. In addition, of the alkaline cells 11 located at both ends,
One of the alkaline cells 11 has its positive current collecting terminal 23 directly welded to the positive terminal 41, and the other alkaline cell 11 has its negative current collecting terminal 33 directly connected to the negative terminal 42.
These terminals 41 and 42 are connected to the lid 1
5 project upward.
【００２５】上述のようにして配列された１０個のアル
カリ単電池１１は、その状態で固定部材１２により一体
的に固定されている。固定部材１２は、１対のエンドプ
レート５０，５０と、４つのサイドプレート５１とを備
えている。１対のエンドプレート５０，５０は両端にそ
れぞれ位置するアルカリ単電池１１，１１の外側に配置
されており、また、各サイドプレート５１は、各アルカ
リ単電池１１の電槽１３の側面１３ｄに形成された固定
溝１８内にそれぞれ配置されており、両端が各エンドプ
レート５０，５０に固定されている。これにより、配列
された１０個のアルカリ単電池１１は、エンドプレート
５０，５０間に挟まれた状態で一体的に固定されてい
る。The ten alkaline cells 11 arranged as described above are integrally fixed by the fixing member 12 in that state. The fixing member 12 includes a pair of end plates 50, 50 and four side plates 51. The pair of end plates 50, 50 are arranged outside the alkaline cells 11, 11 located at both ends, respectively, and each side plate 51 is formed on the side surface 13d of the battery case 13 of each alkaline cell 11. , And are fixed to the end plates 50, 50 at both ends. As a result, the ten alkaline cells 11 arranged are integrally fixed while being sandwiched between the end plates 50, 50.
【００２６】一体的に固定された各アルカリ単電池１１
間には、図７に示すように、隣接し合う電槽１３の通気
溝１７同士が組み合わさることにより、上下方向に開口
する通気孔５２が形成されている。この通気孔５２は、
アルカリ単電池１１の充放電時の発熱による熱を冷却す
るためのものである。Each alkaline cell 11 fixed integrally
As shown in FIG. 7, as shown in FIG. 7, a ventilation hole 52 that opens in the vertical direction is formed by combining the ventilation grooves 17 of the adjacent battery cases 13. This vent 52
This is for cooling the heat generated by the heat generated during charging and discharging of the alkaline cell 11.
【００２７】また、隣接し合うアルカリ単電池１１，１
１の電池要素１４，１４間は、図７に示すように、導電
体６０を通じて接続されている。導電体６０は、隣接し
合う電槽１３，１３の貫通孔１９，１９が対向して形成
される一連の連続孔６１内に配置された、例えば鉄やニ
ッケル等の導電性材料からなる円盤状の部材であり、そ
の外周にゴム等の弾性シール材からなるＯリング６２を
備えている。そして、導電体６０は、各電槽１３の内部
側から押圧されて外周部が連続孔６１の内周面に圧接し
ており、Ｏリング６２が連続孔６１を液密に封止してい
る。In addition, adjacent alkaline cells 11, 1
As shown in FIG. 7, the one battery element 14, 14 is connected through a conductor 60. The conductor 60 is a disc-shaped conductor made of a conductive material such as iron or nickel disposed in a series of continuous holes 61 in which the through holes 19 of the adjacent battery containers 13 are formed to face each other. And an O-ring 62 made of an elastic sealing material such as rubber on its outer periphery. Then, the conductor 60 is pressed from the inside of each battery case 13 and the outer peripheral portion is pressed against the inner peripheral surface of the continuous hole 61, and the O-ring 62 seals the continuous hole 61 in a liquid-tight manner. .
【００２８】一方の電池要素１４の正極集電端子２３
は、このような導電体６０の一端に対して溶接されてい
る。ここでは、正極集電端子２３に設けられた溶接突起
２８が主として導電体６０に対して溶接されており、ま
た、正極集電端子２３に設けられた環状突起２７が電槽
１３の貫通孔１９の周縁部において壁部１３ｂ内に圧入
している。また、他方の電池要素１４の負極集電端子３
３は、導電体６０の他端に対して同様に溶接されてお
り、また、環状突起２７が同様に壁部１３ｂ内に圧入し
ている。The positive current collecting terminal 23 of one battery element 14
Is welded to one end of such a conductor 60. Here, the welding projection 28 provided on the positive electrode current collecting terminal 23 is mainly welded to the conductor 60, and the annular projection 27 provided on the positive electrode current collecting terminal 23 is provided with the through hole 19 of the battery case 13. Is press-fitted into the wall 13b at the periphery. Further, the negative electrode current collecting terminal 3 of the other battery element 14
3 is similarly welded to the other end of the conductor 60, and the annular projection 27 is similarly press-fitted into the wall 13b.
【００２９】上述のような電池要素１４，１４間の接続
構造は、次のようにして達成することができる。先ず、
図８に示すように、通気孔５２が形成されるように電槽
１３，１３を密接させて並べ、夫々の貫通孔１９による
一連の連続孔６１を形成する。そして、図９に示すよう
に、この連続孔６１内に、Ｏリング６２を外周部に備え
かつ厚さが連続孔６１の長さ（奥行き）よりも若干大き
目に設定された導電体６０を挿入する。そして、この状
態で、導電体６０の両端を、図に矢印で示すようにプレ
ス機等を用いて中心方向に押圧する。これにより、導電
体６０は、図１０に示すように、直径が広がる方向に圧
縮変形し、両端部が壁部１３ｂの内壁面と面一になると
ともに外周部が連続孔６１の内周面に圧接する。また、
Ｏリング６２は、連続孔６１の内周面方向に押され、連
続孔６１を液密に封止する。The connection structure between the battery elements 14, 14 as described above can be achieved as follows. First,
As shown in FIG. 8, the battery cases 13 and 13 are arranged closely so that the ventilation holes 52 are formed, and a series of continuous holes 61 formed by the respective through holes 19 are formed. Then, as shown in FIG. 9, a conductor 60 having an O-ring 62 on the outer peripheral portion and having a thickness slightly larger than the length (depth) of the continuous hole 61 is inserted into the continuous hole 61. I do. Then, in this state, both ends of the conductor 60 are pressed in the center direction using a press or the like as shown by arrows in the figure. As a result, the conductor 60 is compressed and deformed in the direction in which the diameter increases, as shown in FIG. Crimp. Also,
The O-ring 62 is pushed in the direction of the inner peripheral surface of the continuous hole 61 to seal the continuous hole 61 in a liquid-tight manner.
【００３０】次に、図１１に示すように、導電体６０の
一方の端面に一方の電池要素１４の正極集電端子２３の
溶接突起２８側を当接し、また、導電体６０の他方の端
面に他方の電池要素１４の負極集電端子３３の溶接突起
２８側を当接する。この状態で、正極集電端子２３およ
び負極集電端子３３を図に矢印で示すようにプレス機等
を用いて導電体６０方向に押圧し、さらに導電体６０と
正極集電端子２３および負極集電端子３３との間を抵抗
溶接すると、正極集電端子２３、導電体６０および負極
集電端子３３が互いに溶接されて一体化され、また、正
極集電端子２３および負極集電端子３３の環状突起２７
が対向する壁部１３ｂ内に圧入される。この結果、隣接
し合うアルカリ単電池１１，１１間の電池要素１４，１
４が直列接続され、電池要素１４，１４間の接続構造が
達成される。Next, as shown in FIG. 11, one end face of the conductor 60 is brought into contact with the welding projection 28 side of the positive electrode current collecting terminal 23 of one battery element 14, and the other end face of the conductor 60 is contacted. And the other side of the battery element 14 is brought into contact with the welding projection 28 side of the negative electrode current collecting terminal 33. In this state, the positive electrode current collecting terminal 23 and the negative electrode current collecting terminal 33 are pressed in the direction of the conductor 60 using a press or the like as indicated by arrows in the figure, and the conductor 60, the positive electrode current collecting terminal 23 and the negative electrode current collecting terminal 23 are pressed. When resistance welding is performed between the positive current collecting terminal 23 and the negative current collecting terminal 33, the positive current collecting terminal 23, the conductor 60, and the negative current collecting terminal 33 are welded to each other and integrated. Protrusion 27
Is pressed into the opposing wall 13b. As a result, the battery elements 14, 1 between the adjacent alkaline cells 11, 11
4 are connected in series, and a connection structure between the battery elements 14, 14 is achieved.
【００３１】上述の集合電池１０は、上述のようにアル
カリ単電池１１間の接続を電槽１３の壁部１３ｂ間の連
続孔６１内に配置された導電体６０により確保している
ため、各アルカリ単電池１１の上部に相互の接続を確保
するための正極端子、負極端子および接続バーを設ける
必要がある従来の集合電池に比べて高さを抑制すること
ができ、結果的に従来のものよりもコンパクトに構成す
ることができる。また、集合電池１０は、従来の集合電
池において必要であった上述のような正極端子、負極端
子および接続バーが不要になるため、部品点数を削減す
ることができ、その結果、従来のものに比べて低コスト
化および軽量化を図ることができる。In the above-described assembled battery 10, the connection between the alkaline cells 11 is ensured by the conductor 60 disposed in the continuous hole 61 between the wall portions 13b of the battery case 13 as described above. The height can be suppressed as compared with the conventional assembled battery in which a positive electrode terminal, a negative electrode terminal and a connection bar for ensuring mutual connection need to be provided on the upper part of the alkaline unit cell 11, and as a result, the conventional It can be configured more compactly. Also, the assembled battery 10 does not require the above-described positive electrode terminal, negative electrode terminal, and connection bar, which were necessary in the conventional assembled battery, so that the number of components can be reduced, and as a result, Compared with this, cost reduction and weight reduction can be achieved.
【００３２】さらに、この集合電池１０は、従来の集合
電池に比べて電池要素１４，１４間が短い経路で接続さ
れているため、電池要素１４，１４間の接続抵抗を低減
することができる。このため、集合電池１０は、従来の
集合電池で用いられているアルカリ単電池と同性能のア
ルカリ単電池を用いている場合であっても、従来のもの
に比べて全体としての電池特性を向上させることができ
る。Further, in the assembled battery 10, the connection resistance between the battery elements 14, 14 can be reduced because the battery elements 14, 14 are connected by a shorter path than the conventional assembled battery. For this reason, the collective battery 10 has improved overall battery characteristics as compared with the conventional battery even when using an alkaline battery having the same performance as the alkaline battery used in the conventional battery. Can be done.
【００３３】特に、この集合電池１０では、各電池要素
１４の正極群２０を構成する夫々の正極２２の集電タブ
２６の厚さが、上述のように正極集電端子２３と正極２
２との位置関係により変更して設定されているため、各
正極２２と正極集電端子２３との接続抵抗の不均一性を
軽減することができ、その結果、各正極２２間の利用率
の不均一性を軽減することができる。この点は、同様に
構成された負極群３０についても同様である。したがっ
て、この集合電池１０は、個々のアルカリ単電池１１の
電池特性も改善されることになるため、従来のものに比
べて全体としての電池特性がより高まることになる。In particular, in the assembled battery 10, the thickness of the current collecting tab 26 of each of the positive electrodes 22 constituting the positive electrode group 20 of each battery element 14 is such that the positive current collecting terminal 23 and the positive electrode 2
2, the connection resistance between each positive electrode 22 and the positive electrode current collecting terminal 23 can be reduced, and as a result, the utilization rate between each positive electrode 22 can be reduced. Non-uniformity can be reduced. This is the same for the negative electrode group 30 configured similarly. Therefore, in the assembled battery 10, since the battery characteristics of the individual alkaline cells 11 are also improved, the overall battery characteristics are higher than those of the conventional battery.
【００３４】因みに、全ての正極２２の集電タブ２６の
厚さを十分に厚く設定しておくと、各集電タブ２６の電
気抵抗値は十分に小さくなり、正極２２間の利用率の不
均一性は軽減されることになるが、この場合は、集電タ
ブ２６の重量が増し、結果的に正極群２０全体の重量が
増大することになる。これに対し、本実施の形態の正極
群２０は、各集電タブ２６の厚さを、上述のように正極
集電端子２３と正極２２との位置関係により変更してい
るため、重量増加を抑制しつつ、正極２２間の利用率の
不均一性を軽減することができることになる。この点、
負極群３０についても同様である。By the way, if the thickness of the current collecting tabs 26 of all the positive electrodes 22 is set to be sufficiently large, the electric resistance of each current collecting tab 26 becomes sufficiently small, and the utilization factor between the positive electrodes 22 is not sufficient. Although the uniformity is reduced, in this case, the weight of the current collecting tab 26 increases, and as a result, the weight of the entire positive electrode group 20 increases. On the other hand, in the positive electrode group 20 of the present embodiment, since the thickness of each current collecting tab 26 is changed depending on the positional relationship between the positive electrode current collecting terminal 23 and the positive electrode 22 as described above, the weight increases. It is possible to reduce the non-uniformity of the utilization rate between the positive electrodes 22 while suppressing. In this regard,
The same applies to the negative electrode group 30.
【００３５】なお、各アルカリ単電池１１の電槽１３内
に注入されている電解液は、Ｏリング６２が連続孔６１
を液密に封止しているため、隣接する電槽１３内に移動
しにくい。また、電解液は、仮に連続孔６１内を通過し
たとしても、壁部１３ｂ内に圧入された環状突起２７に
より移動を阻止され、結果的に隣接する電槽１３内には
移動しにくい。The electrolyte injected into the battery case 13 of each of the alkaline cells 11 has a continuous hole 61 formed by an O-ring 62.
Is sealed in a liquid-tight manner, so that it is difficult to move into the adjacent battery case 13. Further, even if the electrolytic solution passes through the continuous hole 61, the electrolytic solution is prevented from moving by the annular projection 27 pressed into the wall portion 13b, and as a result, it is difficult to move into the adjacent battery case 13.
【００３６】［他の実施の形態］ （１）上述の実施の形態では、配列された複数個のアル
カリ単電池１１を固定部材１２により一体的に固定した
が、複数のアルカリ単電池１１間は予め接着されていて
もよい。なお、アルカリ単電池１１間の接着方法は、特
に限定されるものではなく、接着材を用いる方法や、超
音波溶着、熱溶着および高周波溶着等の各種の溶着法等
を採用することができる。[Other Embodiments] (1) In the above-described embodiment, the arranged plurality of alkaline cells 11 are integrally fixed by the fixing member 12, but between the plurality of alkaline cells 11 It may be bonded in advance. The method of bonding between the alkaline cells 11 is not particularly limited, and a method using an adhesive, various welding methods such as ultrasonic welding, heat welding, and high-frequency welding can be adopted.
【００３７】（２）上述の実施の形態では、電池要素１
４を構成する正極群２０において、正極２２を集電タブ
２６の厚さが異なる第１群２２ａと第２群２２ｂの２つ
に分け、それぞれの群の集電タブ２６を集合させて正極
集電端子２３に対して個別に溶接しているが、この正極
群２０は他の形態に変更することもできる。例えば、正
極２２を集電タブ２６の厚さが異なる３群以上に分け、
それぞれの群毎の集電タブ２６を纏めて正極集電端子２
３に対して個別に溶接するようにしてもよい。この場
合、各正極２２と正極集電端子２３との接続抵抗はより
均一化されることになるので、各正極２２の利用率をよ
り均一化することができる。(2) In the above embodiment, the battery element 1
4, the positive electrode 22 is divided into two groups, a first group 22a and a second group 22b having different thicknesses of the current collecting tabs 26, and the current collecting tabs 26 of each group are assembled to collect the positive electrode. Although the positive electrode group 20 is individually welded to the power terminal 23, the positive electrode group 20 can be changed to another form. For example, the positive electrode 22 is divided into three or more groups having different thicknesses of the current collection tab 26,
The current collecting tabs 26 for each group are put together and the positive current collecting terminal 2
3 may be individually welded. In this case, since the connection resistance between each positive electrode 22 and the positive electrode current collecting terminal 23 is made more uniform, the utilization rate of each positive electrode 22 can be made more uniform.
【００３８】或いは、正極群２０を構成する各正極２２
の集電タブ２６の厚さを、正極集電端子２３に最も近接
した正極２２のものから正極集電端子２３から最も離れ
た正極２２のものにかけて順に大きく設定してもよい。
この場合は、各正極２２と正極集電端子２３との間の接
続抵抗がより効果的に均一化され、結果的に各正極２２
の利用率がさらに均一化されることになる。なお、この
場合、各正極２２の集電タブ２６は、上述の実施の形態
の場合と同様に２群または３群以上に分けて群毎に個別
に正極集電端子２３に対して溶接されていてもよいし、
全てが一体的に正極集電端子２３に対して溶接されてい
てもよい。なお、以上のような変形は、負極群３０につ
いても同様に実施することができる。Alternatively, each positive electrode 22 constituting the positive electrode group 20
The thickness of the current collecting tab 26 of the positive electrode 22 closest to the positive electrode current collecting terminal 23 to the thickness of the positive electrode 22 farthest from the positive electrode current collecting terminal 23 may be sequentially increased.
In this case, the connection resistance between each positive electrode 22 and the positive electrode current collecting terminal 23 is more effectively equalized, and as a result, each positive electrode 22
Utilization rate is further uniformed. In this case, the current collecting tabs 26 of the respective positive electrodes 22 are divided into two groups or three or more groups and are individually welded to the positive electrode current collecting terminals 23 for each group as in the above-described embodiment. May be
All of them may be integrally welded to the positive current collecting terminal 23. Note that the above-described modification can be similarly applied to the negative electrode group 30.
【００３９】（３）上述の実施の形態では、正極群２０
において、各正極２２の集電タブ２６を正極集電端子２
３に対して溶接したが、集電タブ２６は、例えばリベッ
ト等の固定具を用いて正極集電端子２３に対して固定す
ることもできる。この点は、負極群３０についても同様
である。(3) In the above embodiment, the positive electrode group 20
, The current collecting tab 26 of each positive electrode 22 is connected to the positive current collecting terminal 2
However, the current collecting tab 26 can be fixed to the positive current collecting terminal 23 using a fixing tool such as a rivet. This is the same for the negative electrode group 30.
【００４０】[0040]
【実施例】アルカリ単電池（ニッケル水素電池）１０個
を直列に接続して上述の実施の形態に係る集合電池を製
造した。この集合電池は、容量が５０Ａｈ、電圧が１２
Ｖであり、また、総重量が９．６ｋｇであって重量エネ
ルギー密度が６２．５Ｗｈ／ｋｇであった。因みに、電
池要素に含まれる集電タブの重量の総合計（集電タブ総
重量）は２０８．３ｇ、また、正極集電端子、負極集電
端子および導電体の重量の総合計（接続部品総重量）は
４０５．０ｇであり、集電タブ総重量と接続部品総重量
との合計は６１３．３ｇであった。EXAMPLE An assembled battery according to the above-described embodiment was manufactured by connecting ten alkaline cells (nickel-metal hydride batteries) in series. This assembled battery has a capacity of 50 Ah and a voltage of 12
V, the total weight was 9.6 kg, and the weight energy density was 62.5 Wh / kg. Incidentally, the total sum of the weights of the current collecting tabs included in the battery element (total weight of the current collecting tabs) is 208.3 g, and the total sum of the weights of the positive current collecting terminal, the negative current collecting terminal, and the conductor (the total of the connecting parts) Weight) was 405.0 g, and the total of the total weight of the current collecting tabs and the total weight of the connection parts was 613.3 g.
【００４１】一方、比較例として、同じ性能のアルカリ
単電池を１０個用い、図１２に示す従来品の集合電池を
製造した。この集合電池は、容量が５０Ａｈ、電圧が１
２Ｖであり、また、総重量が１０．９ｋｇであって重量
エネルギー密度が５５．０Ｗｈ／ｋｇであった。因み
に、電池要素に含まれる集電タブの重量の総合計（集電
タブ総重量）は１０６．５ｇ、また、正極端子、負極端
子および接続バーの重量の総合計（接続部品総重量）は
９５９．０ｇであり、集電タブ総重量と接続部品総重量
との合計は１０６５．５ｇに達した。On the other hand, as a comparative example, a conventional assembled battery shown in FIG. 12 was manufactured using ten alkaline cells having the same performance. This assembled battery has a capacity of 50 Ah and a voltage of 1
2V, the total weight was 10.9 kg, and the weight energy density was 55.0 Wh / kg. Incidentally, the total sum of the weights of the current collection tabs included in the battery element (total weight of the current collection tabs) is 106.5 g, and the total sum of the weights of the positive electrode terminal, the negative electrode terminal, and the connection bar (the total weight of the connection parts) is 959. 2.0 g, and the total of the total weight of the current collection tab and the total weight of the connection parts reached 1065.5 g.
【００４２】以上から、実施例に係る集合電池は、比較
例の集合電池に比べて軽量であって重量エネルギー密度
が高いことが分かる。From the above, it can be seen that the battery pack according to the example is lighter and has a higher weight energy density than the battery pack of the comparative example.
【００４３】[0043]
【発明の効果】本発明に係る集合電池は、各アルカリ単
電池の電池要素が電槽の壁部を通じて隣接するアルカリ
単電池の電池要素と電気的に接続されているため、従来
の集合電池に比べて小型化および軽量化を図ることがで
き、さらに電池特性を高めることができる。According to the assembled battery of the present invention, the battery element of each alkaline cell is electrically connected to the battery element of the adjacent alkaline cell through the wall of the battery case. The size and weight can be reduced, and the battery characteristics can be further improved.
【図１】本発明の実施の一形態に係る集合電池の斜視
図。FIG. 1 is a perspective view of an assembled battery according to an embodiment of the present invention.
【図２】図１の分解図。FIG. 2 is an exploded view of FIG.
【図３】前記集合電池を構成するアルカリ単電池の分解
斜視図。FIG. 3 is an exploded perspective view of an alkaline cell constituting the assembled battery.
【図４】前記アルカリ単電池に含まれる電池要素の分解
斜視図。FIG. 4 is an exploded perspective view of a battery element included in the alkaline cell.
【図５】前記電池要素を構成する正極の斜視図。FIG. 5 is a perspective view of a positive electrode constituting the battery element.
【図６】前記電池要素を構成する正極群の一部断面正面
図。FIG. 6 is a partial cross-sectional front view of a positive electrode group constituting the battery element.
【図７】前記集合電池を構成するアルカリ単電池間の電
池要素の接続構造を示す断面図。FIG. 7 is a cross-sectional view showing a connection structure of battery elements between alkaline cells constituting the assembled battery.
【図８】前記接続構造を形成するための一工程を示す
図。FIG. 8 is a view showing one step for forming the connection structure.
【図９】前記接続構造を形成するための他の一工程を示
す図。FIG. 9 is a view showing another process for forming the connection structure.
【図１０】前記接続構造を形成するためのさらに他の一
工程を示す図。FIG. 10 is a view showing still another step for forming the connection structure.
【図１１】前記接続構造を形成するためのさらに他の一
工程を示す図。FIG. 11 is a view showing still another step for forming the connection structure.
【図１２】従来の集合電池の斜視図。FIG. 12 is a perspective view of a conventional collective battery.
１０ 集合電池 １１ アルカリ単電池 １２ 固定部材 １３ 電槽 １３ｂ 壁部 １３ｃ 外壁面 １４ 電池要素 １７ 通気溝 １９ 貫通孔 ２０ 正極群 ２３ 正極集電端子 ２７ 環状突起 ３０ 負極群 ３３ 負極集電端子 ５２ 通気孔 ６０ 導電体 ６１ 連続孔 ６２ Ｏリング DESCRIPTION OF SYMBOLS 10 Collective battery 11 Alkaline cell 12 Fixing member 13 Battery case 13b Wall part 13c Outer wall surface 14 Battery element 17 Vent groove 19 Through hole 20 Positive electrode group 23 Positive current collecting terminal 27 Annular protrusion 30 Negative electrode group 33 Negative current collecting terminal 52 Vent hole Reference Signs List 60 conductor 61 continuous hole 62 O-ring
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０１Ｍ 2/24 Ｈ０１Ｍ 2/24 10/24 10/24 (72)発明者 押谷 政彦 大阪府高槻市古曽部町二丁目３番21号 株 式会社ユアサコーポレーション内 Ｆターム(参考） 5H011 AA04 AA05 CC02 DD01 DD07 FF04 GG02 HH03 5H022 AA04 AA19 BB03 BB12 BB19 CC08 CC12 CC14 CC26 CC27 5H028 AA01 AA07 BB01 CC01 CC05 CC07 5H040 AA01 AS06 AS07 AT06 AY03 AY05 AY09 AY10 DD03 DD04──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification FI FI Theme Court ゛ (Reference) H01M 2/24 H01M 2/24 10/24 10/24 (72) Inventor Masahiko Oshitani Furusobe-cho, Takatsuki-shi, Osaka No. 2-321 F-term in Yuasa Corporation (reference) 5H011 AA04 AA05 CC02 DD01 DD07 FF04 GG02 HH03 5H022 AA04 AA19 BB03 BB12 BB19 CC08 CC12 CC14 CC26 CC27 5H028 AA01 AA07 BB01 CC01 AS05 CC06 AY05 AY09 AY10 DD03 DD04
Claims (8)
電槽の内部に正極群および負極群を含む電池要素を収容
した複数個のアルカリ単電池と、 複数個の前記アルカリ単電池を、前記外壁面同士を密接
させながら配列した集合状態で一体的に固定するための
固定部材とを備え、 配列された複数個の前記アルカリ単電池の夫々は、前記
電池要素が前記壁部を通じて隣接する前記アルカリ単電
池の前記電池要素と電気的に接続されている、集合電
池。1. A plurality of alkaline cells containing a battery element including a positive electrode group and a negative electrode group inside a battery case having a wall portion provided with a groove for ventilation on an outer wall surface; A fixing member for integrally fixing the batteries in a set state in which the outer wall surfaces are arranged in close contact with each other, wherein each of the arranged plurality of alkaline cells has the battery element having the wall portion. A battery pack that is electrically connected to the battery element of the adjacent alkaline unit cell through a battery pack.
えた壁部を有する電槽の内部に正極群および負極群を含
む電池要素を収容した複数個のアルカリ単電池と、 複数個の前記アルカリ単電池を、前記外壁面同士を密接
させながら配列した集合状態で一体的に固定するための
固定部材と、 隣接し合う前記アルカリ単電池間に形成された、前記貫
通孔による一連の連続孔内に配置された導電体とを備
え、 配列された複数個の前記アルカリ単電池の夫々は、前記
電池要素が前記導電体を通じて隣接する前記アルカリ単
電池の前記電池要素と電気的に接続されている、集合電
池。2. A plurality of alkaline cells containing a battery element including a positive electrode group and a negative electrode group inside a battery case having a ventilation groove on an outer wall surface and a wall having a through hole, A fixing member for integrally fixing the plurality of alkaline cells in an assembled state in which the outer wall surfaces are arranged in close contact with each other, and a series of the through-holes formed between the adjacent alkaline cells. And a conductor arranged in the continuous hole of each of the plurality of alkaline cells, wherein each of the plurality of alkaline cells is electrically connected to the battery element of the alkaline cell adjacent to the battery element through the conductor. Connected battery pack.
ル材が配置されている、請求項２に記載の集合電池。3. The battery pack according to claim 2, wherein an elastic sealing material is disposed between said conductor and said continuous hole.
いる、請求項２または３に記載の集合電池。4. The battery pack according to claim 2, wherein said conductor is pressed against an inner surface of said continuous hole.
群をそれぞれ個別に集電するための集電体を有してお
り、前記集電体が前記導電体に対して電気的に接続され
ている、請求項２、３または４に記載の集合電池。5. The battery element has a current collector for individually collecting the positive electrode group and the negative electrode group, and the current collector is electrically connected to the conductor. The assembled battery according to claim 2, 3 or 4, wherein
おいて前記壁部に圧入された一連の環状突起を有してい
る、請求項５に記載の集合電池。6. The battery pack according to claim 5, wherein the current collector has a series of annular projections pressed into the wall near the periphery of the through hole.
記溝による通気孔が形成されている、請求項２、３、
４、５または６に記載の集合電池。7. An air vent formed by said groove is formed between adjacent alkaline cells.
7. The collective battery according to 4, 5, or 6.
されている、請求項２、３、４、５、６または７に記載
の集合電池。8. The assembled battery according to claim 2, wherein the adjacent alkaline cells are adhered to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000020785A JP2001210293A (en) | 2000-01-28 | 2000-01-28 | Assembled battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000020785A JP2001210293A (en) | 2000-01-28 | 2000-01-28 | Assembled battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001210293A true JP2001210293A (en) | 2001-08-03 |
Family
ID=18547293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000020785A Pending JP2001210293A (en) | 2000-01-28 | 2000-01-28 | Assembled battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001210293A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005005215A (en) * | 2003-06-13 | 2005-01-06 | Mitsubishi Heavy Ind Ltd | Secondary battery and method for manufacturing secondary battery |
| JP2008300083A (en) * | 2007-05-29 | 2008-12-11 | Sanyo Electric Co Ltd | Packed battery |
| EP2403032A1 (en) * | 2010-06-30 | 2012-01-04 | Sanyo Electric Co., Ltd. | Battery array configured to prevent vibration |
| EP2015626B1 (en) * | 2007-06-22 | 2016-05-11 | Hitachi, Ltd. | Mounting structure of a power converter |
| JP2019067584A (en) * | 2017-09-29 | 2019-04-25 | 株式会社Ｇｓユアサ | Power storage element |
| JP2020514988A (en) * | 2017-08-10 | 2020-05-21 | エルジー・ケム・リミテッド | Battery module and method for manufacturing battery module |
| JP2021157914A (en) * | 2020-03-26 | 2021-10-07 | 日本碍子株式会社 | Secondary battery and module battery |
-
2000
- 2000-01-28 JP JP2000020785A patent/JP2001210293A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005005215A (en) * | 2003-06-13 | 2005-01-06 | Mitsubishi Heavy Ind Ltd | Secondary battery and method for manufacturing secondary battery |
| JP4494731B2 (en) * | 2003-06-13 | 2010-06-30 | 三菱重工業株式会社 | Secondary battery and method for manufacturing secondary battery |
| JP2008300083A (en) * | 2007-05-29 | 2008-12-11 | Sanyo Electric Co Ltd | Packed battery |
| EP2015626B1 (en) * | 2007-06-22 | 2016-05-11 | Hitachi, Ltd. | Mounting structure of a power converter |
| EP2403032A1 (en) * | 2010-06-30 | 2012-01-04 | Sanyo Electric Co., Ltd. | Battery array configured to prevent vibration |
| JP2012014962A (en) * | 2010-06-30 | 2012-01-19 | Sanyo Electric Co Ltd | Battery pack |
| US8999555B2 (en) | 2010-06-30 | 2015-04-07 | Sanyo Electric Co., Ltd. | Battery array configured to prevent vibration |
| JP2020514988A (en) * | 2017-08-10 | 2020-05-21 | エルジー・ケム・リミテッド | Battery module and method for manufacturing battery module |
| US11228061B2 (en) | 2017-08-10 | 2022-01-18 | Lg Chem, Ltd. | Battery module and battery module manufacturing method |
| JP2019067584A (en) * | 2017-09-29 | 2019-04-25 | 株式会社Ｇｓユアサ | Power storage element |
| JP7020034B2 (en) | 2017-09-29 | 2022-02-16 | 株式会社Ｇｓユアサ | Power storage element |
| JP2021157914A (en) * | 2020-03-26 | 2021-10-07 | 日本碍子株式会社 | Secondary battery and module battery |
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