JP2001283940A - Set battery - Google Patents
Set batteryInfo
- Publication number
- JP2001283940A JP2001283940A JP2000102339A JP2000102339A JP2001283940A JP 2001283940 A JP2001283940 A JP 2001283940A JP 2000102339 A JP2000102339 A JP 2000102339A JP 2000102339 A JP2000102339 A JP 2000102339A JP 2001283940 A JP2001283940 A JP 2001283940A
- Authority
- JP
- Japan
- Prior art keywords
- cells
- row
- passage
- fluid
- unit cell
- 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、複数個の単電池を
モジュールケースに収納した組電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembled battery in which a plurality of cells are housed in a module case.
【０００２】[0002]
【従来の技術】電気自動車には、複数個のリチウムイオ
ン二次電池の単電池をモジュールケースに収納した組電
池が用いられることがある。リチウムイオン二次電池の
単電池１を３０セル用いた従来の組電池の例を図４に示
す。ここで用いられる単電池１は、図５に示すように、
長円筒型のリチウムイオン二次電池であり、底付きの長
円筒形の電池ケース１ａの内部に長円筒形の巻回型の電
池エレメントを収納して、上端開口部を長円形の蓋板１
ｂで封口したものである。また、この単電池１には、蓋
板１ｂから上方に向けて正負の端子１ｃ，１ｄが突出し
ている。2. Description of the Related Art In an electric vehicle, an assembled battery in which a plurality of lithium ion secondary batteries are accommodated in a module case is sometimes used. FIG. 4 shows an example of a conventional assembled battery using 30 single cells 1 of a lithium ion secondary battery. The unit cell 1 used here is, as shown in FIG.
A long-cylindrical lithium-ion secondary battery, in which a long-cylindrical wound battery element is housed inside a long-cylindrical battery case 1a with a bottom, and an upper end opening is an elliptical cover plate 1
This was sealed with b. Further, in the unit cell 1, positive and negative terminals 1c and 1d protrude upward from the lid plate 1b.
【０００３】組電池は、図４に示すように、上記単電池
１をモジュールケース２に３０個収納している。モジュ
ールケース２は、方形の底板２ａと、この底板２ａ上の
周囲を囲むように立設された４枚の側板２ｂと、これら
の側板２ｂで囲まれた内部を細長い３箇所の領域に区切
る２枚の仕切り板２ｃと、これらの側板２ｂの上端開口
部を塞ぐ図示しない上板とからなる合成樹脂製の筐体で
ある。単電池１は、このモジュールケース２の側板２ｂ
で囲まれた内部を仕切り板２ｃで仕切った３箇所の各領
域にそれぞれ１０個ずつ一列に並べて配置される。各列
の単電池１は、長円筒形の側面の平坦な面が図４に示す
上下側の側板２ｂに平行になるように配置され、この平
坦な面に直交する方向に少しずつ間隔を開けて真っ直ぐ
に並べられる。また、これらの単電池１の列は、モジュ
ールケース２の側板２ｂや仕切り板２ｃで仕切られた長
方形状の各領域の中央部に配置され、特に図４に示す左
右の側板２ｂや仕切り板２ｃとの間にはそれぞれ十分な
隙間が開くようにしている。このようにして配置された
各単電池１は、図示しない上板の上方でそれぞれの端子
１ｃ，１ｄに１点鎖線で示す接続バー７を接続すること
により直列接続されて組電池を構成する。[0003] As shown in FIG. 4, a battery pack contains thirty unit cells 1 in a module case 2. The module case 2 includes a rectangular bottom plate 2a, four side plates 2b erected so as to surround the periphery of the bottom plate 2a, and an interior surrounded by the side plates 2b that divides the interior into three elongated regions. This is a synthetic resin housing composed of a plurality of partition plates 2c and an upper plate (not shown) for closing the upper end openings of these side plates 2b. The unit cell 1 is a side plate 2b of the module case 2.
10 are arranged in a line in each of three regions divided by the partition plate 2c. The cells 1 in each row are arranged such that the flat surface of the long cylindrical side surface is parallel to the upper and lower side plates 2b shown in FIG. 4, and are slightly spaced apart in a direction perpendicular to the flat surface. Are arranged in a straight line. The rows of the unit cells 1 are arranged at the center of each rectangular area partitioned by the side plates 2b and the partition plates 2c of the module case 2. In particular, the left and right side plates 2b and the partition plates 2c shown in FIG. There is a sufficient gap between them. The unit cells 1 arranged in this manner are connected in series by connecting connection terminals 7 indicated by dashed lines to respective terminals 1c and 1d above an upper plate (not shown) to form an assembled battery.
【０００４】上記モジュールケース２には、図４に示す
下側の側板２ｂに３箇所の導入口３が開口されると共
に、図示上側の側板２ｂにも、３箇所の排出口４が開口
されている。各導入口３は、側板２ｂに開口された孔で
あり、それぞれ側板２ｂや仕切り板２ｃで区切られた３
箇所の領域における単電池１の列の図示左側の空間に通
じる位置に形成されている。また、各排出口４も、側板
２ｂに開口された孔であり、それぞれ仕切り板２ｃで区
切られた３箇所の領域における単電池１の列の図示右側
の空間に通じる位置に形成されている。そして、これら
の導入口３には、モジュールケース２を図示しないバッ
テリボックスに収納したときに、このバッテリボックス
に取り付けられたファンからの外気が冷却風として流入
するようになっている。従って、各導入口３から流入し
た冷却風Ａは、単電池１の各列における図示左側側方の
側板２ｂ又は仕切り板２ｃの側壁との間の空間によって
形成される導入通路５に導入され、ここで各単電池１の
間を分かれて通り抜けるので、全ての単電池１は、常に
新しい外気によって冷却される。そして、各単電池１の
間を分かれて通り抜けた冷却風Ａは、単電池１の各列に
おける図示右側側方の側板２ｂ又は仕切り板２ｃの側壁
との間の空間によって形成される排出通路６で再び合流
して、排出口４から排出される。また、各排出口４から
排出された冷却風Ａは、バッテリボックスを介して外部
に放出されるようになっている。In the module case 2, three inlets 3 are opened in the lower side plate 2b shown in FIG. 4, and three outlets 4 are also opened in the upper side plate 2b shown in FIG. I have. Each inlet 3 is a hole opened in the side plate 2b, and each of the inlets 3 is divided by the side plate 2b and the partition plate 2c.
It is formed at a position that leads to a space on the left side of the row of the unit cells 1 in the region of the location. Each of the outlets 4 is also a hole opened in the side plate 2b, and is formed at a position that communicates with the space on the right side of the row of the unit cells 1 in three regions separated by the partition plate 2c. When the module case 2 is stored in a battery box (not shown), outside air from a fan attached to the battery box flows into these inlets 3 as cooling air. Therefore, the cooling air A flowing from each inlet 3 is introduced into the inlet passage 5 formed by the space between the side wall 2b or the side wall of the partition plate 2c in each row of the unit cells 1 on the left side in the drawing, Here, since each of the cells 1 passes through separately, all the cells 1 are always cooled by fresh outside air. Then, the cooling air A that has passed through the space between the unit cells 1 is discharged by the discharge passage 6 formed by the space between the unit cell 1 and the side wall 2b on the right side in the drawing or the side wall of the partition plate 2c. And are discharged again from the discharge port 4. The cooling air A discharged from each outlet 4 is discharged to the outside via the battery box.
【０００５】[0005]
【発明が解決しようとする課題】ところが、上記従来の
組電池では、導入通路５の幅が一定であるため、ここに
導入された冷却風Ａは、そのまま奥（図４に示す上方）
に向かい、導入口３付近の単電池１の間はあまり通らず
に、奥の単電池１ほど流量が多くなるので、各列の単電
池１が均一に冷却されず、導入口３付近の単電池１の温
度が高温傾向になるという問題があった。However, in the above-mentioned conventional battery pack, since the width of the introduction passage 5 is constant, the cooling air A introduced here is left behind (upward as shown in FIG. 4).
, The flow rate of the cells 1 near the inlet 3 is not uniform, and the cells 1 in each row are not cooled uniformly. There is a problem that the temperature of the battery 1 tends to be high.
【０００６】本発明は、かかる事情に対処するためにな
されたものであり、単電池の列の側方に形成される導入
通路を導入口に近いほど広くし、この単電池の列の反対
側に形成される排出通路を排出口に近いほど広くするこ
とにより、各単電池を均一に冷却することができる組電
池を提供することを目的としている。The present invention has been made in order to cope with such a situation, and the introduction passage formed on the side of a row of unit cells is made wider as it is closer to the introduction port, and the opposite side of the row of unit cells is provided. It is an object of the present invention to provide a battery pack that can uniformly cool each unit cell by making the discharge passage formed in the cell closer to the discharge port.
【０００７】[0007]
【課題を解決するための手段】請求項１の発明は、いず
れか一方又は双方に正負の端子が設けられた上面と底面
を有し、これらの間を側面で覆った複数個の単電池を、
底面を下にして相互に間隔を開け１列又は複数列に並べ
てモジュールケース内に収納した組電池において、これ
ら単電池の列の一方の側方に、単電池の列の側面に沿っ
て流体が流れるように形成された流体通路であって、単
電池の並び方向の一端側に行くほど流体の通路が狭くな
る導入通路が設けられると共に、この列の他方の側方
に、単電池の列の側面に沿って流体が流れるように形成
された排出通路が設けられ、かつ、導入通路の広い側の
端部に流体を導入する導入口が設けられると共に、排出
通路の一端側の端部に流体を排出する排出口が設けられ
たことを特徴とする。According to a first aspect of the present invention, there is provided a plurality of cells each having a top surface and a bottom surface provided with a positive or negative terminal on one or both sides, and having a side surface therebetween. ,
In an assembled battery that is arranged in a row or a plurality of rows spaced apart from each other with the bottom face down and housed in a module case, a fluid flows along one side of the row of unit cells along one side of the row of unit cells. A fluid passage formed so as to flow, and an introduction passage in which the fluid passage becomes narrower toward one end in the direction in which the cells are arranged, is provided. A discharge passage formed so that the fluid flows along the side surface is provided, and an introduction port for introducing a fluid is provided at an end of a wide side of the introduction passage, and a fluid is provided at one end of the discharge passage. And a discharge port for discharging water.
【０００８】請求項１の発明によれば、外部から送られ
て来る冷却風等の流体が導入口から導入通路に導入さ
れ、各単電池の間を抜けて排出通路を通って排出口から
外部に排出される。しかも、導入通路に導入された流体
は、奥に向かうほど徐々に通路が狭くなり圧力損失が大
きくなるので、奥側だけでなく手前側の単電池の間にも
確実に分かれて流入することになる。従って、各単電池
は、奥に配置されたものだけでなく導入口付近のものの
間にも確実に流体が流れるので、これらの単電池を均一
に冷却することができるようになる。According to the first aspect of the invention, a fluid such as cooling air sent from the outside is introduced into the introduction passage from the introduction port, passes between the cells, passes through the discharge passage, and flows from the discharge port to the outside. Is discharged. In addition, the fluid introduced into the introduction passage gradually narrows the passage toward the back and the pressure loss increases, so that the fluid is surely separated and flows not only between the back cells but also between the cells on the front side. Become. Therefore, since the fluid flows reliably not only between the cells arranged in the back but also between the cells near the inlet, the cells can be cooled uniformly.
【０００９】なお、排出通路の流体の通路は、ここでは
特に限定しないが、一定の広さでもよいし、排出口に近
い側ほど流体の通路を広くすることもできる。が設けら
れたことを特徴とする。[0009] The fluid passage of the discharge passage is not particularly limited here, but may be of a fixed width, or the fluid passage may be wider on the side closer to the discharge port. Is provided.
【００１０】請求項２の発明は、いずれか一方又は双方
に正負の端子が設けられた上面と底面を有し、これらの
間を側面で覆った複数個の単電池を、底面を下にして相
互に間隔を開け１列又は複数列に並べてモジュールケー
ス内に収納した組電池において、これら単電池の列の一
方の側方に、単電池の列の側面に沿って流体が流れるよ
うに形成された流体通路であって、単電池の並び方向の
一端側に行くほど流体の通路が狭くなる導入通路が設け
られると共に、この列の他方の側方に、単電池の列の側
面に沿って流体が流れるように形成された流体通路であ
って、単電池の並び方向の一端側に行くほど流体の通路
が広くなる排出通路が設けられ、かつ、導入通路の広い
側の端部に流体を導入する導入口が設けられると共に、
排出通路の広い側の端部に流体を排出する排出口が設け
られたことを特徴とする。A second aspect of the present invention is directed to a plurality of cells having an upper surface and a bottom surface provided with positive and negative terminals on one or both of them, and covering a plurality of the cells with the bottom surface therebetween. In an assembled battery housed in a module case arranged in a row or a plurality of rows at intervals from each other, one side of each of the unit cells is formed so that fluid flows along the side surface of the unit cell row. An introduction passage in which the passage of the fluid becomes narrower toward one end in the direction in which the unit cells are arranged, and the fluid passage along the side surface of the unit cell row is provided on the other side of this row. A discharge passage in which the flow path of the fluid becomes wider toward one end in the direction in which the unit cells are arranged, and a fluid is introduced into the end of the introduction passage that is wider. An introduction port is provided,
A discharge port for discharging a fluid is provided at an end of a wide side of the discharge passage.
【００１１】請求項２の発明によれば、外部から送られ
て来る冷却風等の流体が導入口から導入通路に導入さ
れ、各単電池の間を抜けて排出通路を通って排出口から
外部に排出される。しかも、導入通路に導入された流体
は、奥に向かうほど徐々に通路が狭くなるために、奥側
だけでなく手前側の単電池の間にも確実に分かれて流入
することになる。また、排出通路が徐々に広くなるため
にスペースの無駄がなくなる。従って、各単電池は、奥
に配置されたものだけでなく導入口付近のものの間にも
確実に流体が流れるので、これらの単電池を均一に冷却
することができるようになる。According to the second aspect of the present invention, a fluid such as cooling air sent from the outside is introduced into the introduction passage from the introduction port, passes through each unit cell, passes through the discharge passage, and flows from the discharge port to the outside. Is discharged. In addition, since the fluid introduced into the introduction passage gradually narrows toward the back, the fluid surely flows into the cells not only on the back but also between the cells on the near side. Further, since the discharge passage is gradually widened, space is not wasted. Therefore, since the fluid flows reliably not only between the cells arranged in the back but also between the cells near the inlet, the cells can be cooled uniformly.
【００１２】請求項３の発明は、前記単電池の列の一方
の側方に、導入口側ほど単電池から遠ざかる側壁が形成
されると共に、この列の他方の側方に、排出口側ほど単
電池から遠ざかる側壁が形成されたことを特徴とする。According to a third aspect of the present invention, a side wall is formed on one side of the row of the unit cells, the side wall being more distant from the unit cell toward the inlet, and the other side of the row is closer to the outlet side. It is characterized in that a side wall away from the cell is formed.
【００１３】請求項３の発明によれば、単電池の各列の
一方の側方には、斜めの側壁との間に、導入口側ほど広
い導入通路が設けられ、各列の他方の側方には、斜めの
側壁との間に、排出口側ほど広い排出通路が形成される
ことになる。この際、各列の単電池が真っ直ぐに並べら
れていれば、側壁は斜めに形成され、各列の単電池が斜
めに並べられていれば、側壁が真っ直ぐに形成されるこ
とになる。According to the third aspect of the present invention, on one side of each row of the unit cells, an introduction passage is provided between the oblique side wall and the inlet side, and the other side of each row is provided. On the other hand, a discharge passage wider toward the discharge port is formed between the inclined passage and the oblique side wall. At this time, if the cells in each row are arranged straight, the side wall is formed obliquely, and if the cells in each row are arranged obliquely, the side wall is formed straight.
【００１４】請求項４の発明は、前記単電池が、長円形
の平坦な上面と底面との間を長円筒形の側面で覆った長
円筒型のものであり、単電池の列がこの長円筒形の側面
の平坦な面に直交する方向に揃えて並べられたことを特
徴とする。According to a fourth aspect of the present invention, the unit cells are of an oblong cylindrical type in which an oblong flat upper surface and a bottom surface are covered with an oblong cylindrical side surface. It is characterized by being arranged in a direction orthogonal to a flat surface of a cylindrical side surface.
【００１５】請求項４の発明によれば、長円筒型の単電
池の側面は、半円筒形の湾曲面の間が互いに平行な平坦
な面によって繋がるので、各列の単電池をこの平坦な面
に直交する方向に揃えて並べれば、これらの単電池を真
っ直ぐに並べることができる。また、このような長円筒
型の単電池を用いれば、導入通路を流れる流体が各単電
池の半円筒形の湾曲面に沿って単電池の間に流入し易く
なるので、この流体の流れを円滑にすることができる。According to the fourth aspect of the present invention, the side surfaces of the long cylindrical unit cells are connected by flat surfaces parallel to each other between the semi-cylindrical curved surfaces. If the cells are arranged in a direction perpendicular to the plane, these cells can be arranged straight. In addition, when such a long cylindrical cell is used, the fluid flowing through the introduction passage easily flows between the cells along the semi-cylindrical curved surface of each cell. It can be smooth.
【００１６】請求項５の発明は、前記各単電池の底面を
含む底部がモジュールケースの底板の凹部に嵌まり込む
と共に、これら各単電池の上面を含む上部がモジュール
ケースの上板の凹部に嵌まり込んで支持されていること
を特徴とする。According to a fifth aspect of the present invention, the bottom portion including the bottom surface of each of the unit cells fits into the concave portion of the bottom plate of the module case, and the upper portion including the upper surface of each of the unit cells fits into the concave portion of the upper plate of the module case. It is characterized by being fitted and supported.
【００１７】請求項５の発明によれば、各単電池の底部
と上部を底板と上板とによって確実に支持することがで
きるようになる。また、流体は、この単電池の底部と上
部の間を流れることになるので、特に発熱量が大きい側
面の中央部を確実に冷却することができる。また、単電
池への配線等は、上板の上方や底板の下方でこの単電池
の上面や底面に設けられた端子に接続することができる
ので、流体の流れの邪魔になるようなこともなくなる。According to the invention of claim 5, the bottom and the top of each unit cell can be reliably supported by the bottom plate and the top plate. In addition, since the fluid flows between the bottom and the top of the unit cell, it is possible to reliably cool the central part of the side surface that generates a large amount of heat. Also, wiring to the unit cell can be connected to terminals provided on the top and bottom surfaces of the unit cell above the top plate and below the bottom plate, so that it may obstruct the flow of fluid. Disappears.
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施形態について
図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１９】図１〜図３は本発明の一実施形態を示すも
のであって、図１は組電池の横断面平面図、図２は組電
池のモジュールケースを示す斜視図、図３はモジュール
ケースに収納された単電池を示す縦断面正面図である。
なお、図４〜図５に示した従来例と同様の機能を有する
構成部材には同じ番号を付記する。1 to 3 show one embodiment of the present invention. FIG. 1 is a cross-sectional plan view of an assembled battery, FIG. 2 is a perspective view showing a module case of the assembled battery, and FIG. It is a longitudinal section front view showing the unit cell stored in the case.
Components having the same functions as those of the conventional example shown in FIGS. 4 and 5 are denoted by the same reference numerals.
【００２０】本実施形態の組電池は、図５に示した従来
例と同じ長円筒型のリチウムイオン二次電池を単電池１
として用いる場合について説明する。この組電池は、図
１に示すようなモジュールケース２に３０個の単電池１
を収納している。モジュールケース２は、平行四辺形の
底板２ａと、この底板２ａ上の周囲を囲むように立設さ
れた４枚の側板２ｂと、この側板２ｂで囲まれた内部を
細長い平行四辺形状の３箇所の領域に区切る２枚の仕切
り板２ｃとを備えた合成樹脂製の筐体である。The assembled battery of this embodiment is the same as the conventional example shown in FIG.
The case of using as will be described. This assembled battery includes 30 unit cells 1 in a module case 2 as shown in FIG.
Is stored. The module case 2 includes a parallelogram-shaped bottom plate 2a, four side plates 2b erected so as to surround the bottom plate 2a, and an elongated parallelogram-shaped three-part interior surrounded by the side plate 2b. And a partition made of a synthetic resin having two partitioning plates 2c which are divided into regions.
【００２１】単電池１は、このモジュールケース２の側
板２ｂや仕切り板２ｃで仕切られた３箇所の各領域にそ
れぞれ１０個ずつ一列に並べて配置される。各列の単電
池１は、図１に示す上側と下側の側板２ｂに長円筒形の
側面の平坦な面が平行になるような向きで配置され、こ
の平坦な面に直交する方向に少しずつ間隔を開けて真っ
直ぐに並べられる。従って、これらの単電池１の列は、
側板２ｂや仕切り板２ｃで仕切られた平行四辺形状の領
域内で、図１に示す左側には、図示下側ほど側板２ｂや
仕切り板２ｃの側壁との間の空間が広くなる導入通路５
が形成されると共に、図示右側には、図示上側ほど側板
２ｂや仕切り板２ｃの側壁との間の空間が広くなる排出
通路６が形成される。そして、モジュールケース２の図
１に示す下側の側板２ｂには、３箇所の導入口３が開口
され、それぞれ側板２ｂや仕切り板２ｃで仕切られた３
箇所の各領域の導入通路５に通じるようになっている。
また、図１に示す上側の側板２ｂにも、３箇所の排出口
４が開口され、それぞれ側板２ｂや仕切り板２ｃで仕切
られた３箇所の各領域の排出通路６に通じるようになっ
ている。The unit cells 1 are arranged in a row in a row of ten cells in each of three regions partitioned by the side plates 2b and the partition plates 2c of the module case 2. The cells 1 in each row are arranged on the upper and lower side plates 2b shown in FIG. 1 in such a manner that the flat surfaces of the long cylindrical side surfaces are parallel to each other, and slightly in a direction perpendicular to the flat surfaces. They are arranged straight at intervals. Therefore, the rows of these cells 1
In the parallelogram-shaped region partitioned by the side plate 2b and the partition plate 2c, on the left side shown in FIG. 1, an introduction passage 5 in which the space between the side plate 2b and the side wall of the partition plate 2c becomes wider toward the lower side in the drawing.
Is formed on the right side of the drawing, and a discharge passage 6 is formed in which the space between the side plate 2b and the side wall of the partition plate 2c becomes wider toward the upper side in the figure. In the lower side plate 2b shown in FIG. 1 of the module case 2, three inlets 3 are opened, and each of the inlets 3 is partitioned by the side plate 2b and the partition plate 2c.
It is designed to communicate with the introduction passage 5 in each region of the location.
The upper side plate 2b shown in FIG. 1 also has three outlets 4 which are opened to communicate with the discharge passages 6 in the three regions separated by the side plate 2b and the partition plate 2c, respectively. .
【００２２】上記モジュールケース２の側板２ｂの上端
開口部は、図２に示すように、底板２ａとほぼ同じ平行
四辺形の上板２ｄで塞がれていて、この上板２ｄ上に
は、蓋板状のカバー２ｇが取り付けられている。そし
て、各単電池１は、図３に示すように、底面を含む底部
が底板２ａに形成された凹部２ｅに嵌め込まれると共
に、上面を含む上部が上板２ｄに形成された凹部２ｆに
嵌め込まれて、それぞれ上記所定の位置に位置決めされ
固定されるようになっている。また、上板２ｄの凹部２
ｆには２箇所の貫通孔が形成され、各単電池１の端子１
ｃ，１ｄがこれらの貫通孔から上板２ｄの上方に突出
し、これら上板２ｄの上方に突出した端子１ｃ，１ｄに
接続バー７を接続することにより、図４に示したような
各単電池１間の接続を行っている。図２に示したカバー
２ｇは、この単電池１の接続バー７による接続部分を覆
い隠すためのものである。As shown in FIG. 2, the upper end opening of the side plate 2b of the module case 2 is closed by a parallelogram-shaped upper plate 2d substantially the same as the bottom plate 2a. A cover plate-like cover 2g is attached. Then, as shown in FIG. 3, each cell 1 has its bottom portion including the bottom surface fitted into a concave portion 2e formed in bottom plate 2a, and its upper portion including the upper surface fitted into concave portion 2f formed in upper plate 2d. Thus, they are positioned and fixed at the predetermined positions, respectively. Also, the recess 2 of the upper plate 2d
f, two through holes are formed, and the terminal 1 of each cell 1 is formed.
c and 1d protrude above the upper plate 2d from these through holes, and connect the connection bar 7 to the terminals 1c and 1d protruding above the upper plate 2d, whereby each unit cell as shown in FIG. 1 is connected. The cover 2g shown in FIG. 2 is for covering the connection portion of the unit cell 1 by the connection bar 7.
【００２３】上記構成の組電池は、モジュールケース２
を図示しないバッテリボックスに収納してネジ止めする
ことにより電気自動車等に搭載される。また、バッテリ
ボックスには、モジュールケース２の各導入口３と向か
い合う位置にファンが設けられ、外気をこの導入口３に
冷却風として送り込むようになっている。The battery module having the above-described structure is provided in the module case 2
Is mounted in a battery box (not shown) and is screwed and mounted on an electric vehicle or the like. Further, a fan is provided in the battery box at a position facing each of the inlets 3 of the module case 2 so that outside air is sent into the inlet 3 as cooling air.
【００２４】このようにして各導入口３から導入された
外気の冷却風Ａは、図１に示すように、側板２ｂや仕切
り板２ｃで仕切られた３箇所の各領域の導入通路５に流
れ込み、一列に並んだ各単電池１の間を分かれて通り抜
けて、排出通路６で再び合流し、排出口４から出てバッ
テリボックスの外部に排出される。この際、導入通路５
に流れ込んだ冷却風Ａは、斜めになった図１に示す左側
の側板２ｂや仕切り板２ｃの側壁が奥（図１に示す上
方）に向かうほど単電池１の並びに接近するので、徐々
に狭くなる通路を通ることになり、手前側から順に各単
電池１の間を確実に分かれて流れることになる。また、
各単電池１の間を通り抜けた冷却風Ａは、排出通路６で
合流するが、この場合にも斜めになった図１に示す右側
の側板２ｂや仕切り板２ｃの側壁が奥に向かうほど単電
池１の並びから遠ざかるので、順次増加する流量に応じ
て徐々に広くなる通路を通ることになり、スペースに無
駄を生じることなく排出口４から排出される。As shown in FIG. 1, the cooling air A of the outside air introduced from each of the inlets 3 flows into the introduction passages 5 in each of three regions partitioned by the side plate 2b and the partition plate 2c. After passing through the unit cells 1 arranged in a line, the cells merge through the discharge passage 6 again, exit through the discharge port 4, and are discharged to the outside of the battery box. At this time, the introduction passage 5
The cooling air A that has flowed into the unit cells 1 approaches the back (upward in FIG. 1) as the side walls of the left side plate 2b and the partition plate 2c in FIG. Therefore, the cells 1 are surely separated and flow sequentially from the near side. Also,
The cooling air A passing between the individual cells 1 merges in the discharge passage 6, but in this case also, the more the side wall of the right side plate 2b and the partition plate 2c shown in FIG. Since the battery 1 moves away from the row of batteries 1, the battery 1 passes through a passage that gradually widens in accordance with the sequentially increasing flow rate, and is discharged from the discharge port 4 without wasting space.
【００２５】従って、各列の単電池１は、奥のものだけ
でなく手前側のものも確実に導入口３から導入された新
鮮な冷却風Ａに十分に触れることになるので、それぞれ
が均一に冷却されるようになる。また、本実施形態のよ
うにモジュールケース２内に複数列の単電池１を収納す
る場合や、この単電池１を１列しか収納しなくても、複
数個のモジュールケース２を並べて配置する場合には、
隣合う単電池１の列の間で、一端側ほど広くなる導入通
路５と他端側ほど広くなる排出通路６とが仕切り板２ｃ
等を介して隣接するため、これらがスペースを共用し全
体としての設置スペースを小さくすることもできるよう
になる。即ち、図４に示した従来例では、単電池１の各
列の両側には、均一な幅の導入通路５と排出通路６が形
成されるので、本実施形態と同じ流量の冷却風Ａを流す
ようにするためには、これら各列の間に本実施形態の場
合の２倍近くの隙間が必要となり、その分だけ設置スペ
ースに無駄が生じるようになる。Therefore, the cells 1 in each row are sufficiently exposed to the fresh cooling air A introduced from the inlet 3 without fail, not only at the back but also at the near side. Will be cooled down. Further, a case where a plurality of rows of unit cells 1 are stored in the module case 2 as in the present embodiment, or a case where a plurality of module cases 2 are arranged side by side even when only one row of the unit cells 1 is stored In
Between adjacent rows of the unit cells 1, a partition plate 2 c is formed by an introduction passage 5 which becomes wider toward one end and a discharge passage 6 which becomes wider toward the other end.
Since they are adjacent to each other through a space or the like, the space can be shared and the installation space as a whole can be reduced. That is, in the conventional example shown in FIG. 4, since the introduction passage 5 and the discharge passage 6 having a uniform width are formed on both sides of each row of the unit cells 1, the cooling air A having the same flow rate as in the present embodiment is supplied. In order to allow the water to flow, a gap approximately twice as large as that in the case of the present embodiment is required between these rows, and the installation space is wasted correspondingly.
【００２６】さらに、ここで例えば冷却風Ａを単電池１
の底面側や上面側から送り込んだ場合、この冷却風Ａ
は、単電池１の側面を上下に通り抜けることになる。し
かし、単電池１は、内部に収納された電池エレメントか
らの発熱量が最も多いので、底面や上面を冷却してもあ
まり冷却効率はよくならない。しかも、上面には単電池
１の間を接続する接続バー７が配置されるので、この単
電池１の側面を上下に通り抜けようとする冷却風Ａの通
路を遮ることになり、かえって冷却効率を低下させる原
因となることもある。また、このように冷却風Ａを底面
側や上面側から送り込む場合には、単電池１の底面を底
板２ａ等で確実に支持することが困難になり、場合によ
っては、これらの単電池１を寝かした状態で側面を支持
しなければならないので、単電池１を安定した状態で使
用することができないこともある。Further, here, for example, the cooling air A
When the cooling air is sent from the bottom or top side of
Will pass through the side surface of the cell 1 up and down. However, since the unit cell 1 generates the largest amount of heat from the battery element housed therein, even if the bottom surface or the top surface is cooled, the cooling efficiency is not so good. In addition, since the connection bar 7 for connecting the cells 1 is disposed on the upper surface, the passage of the cooling air A, which tends to pass vertically through the side surface of the cells 1, is blocked, and the cooling efficiency is rather reduced. It may cause a decrease. When the cooling air A is sent from the bottom side or the top side in this way, it becomes difficult to securely support the bottom surface of the unit cells 1 by the bottom plate 2a or the like. Since the side surfaces must be supported in a lying state, the cell 1 may not be used in a stable state.
【００２７】これに対して本実施形態の組電池は、各単
電池１の底部と上部を底板２ａの凹部２ｅと上板２ｄの
凹部２ｆに嵌め込んで固定し、側面にのみ冷却風Ａを流
すので、最も発熱量の多い単電池１の中央部だけを効果
的に冷却することができ、接続バー７等によって冷却風
Ａの流れが遮られるようなこともなくなる。また、各単
電池１は、底面を下にして立てた状態となり、底板２ａ
の凹部２ｅによって確実に支持されるので、この単電池
１を最も安定した自然な状態で使用することができる。On the other hand, in the assembled battery of the present embodiment, the bottom and the top of each cell 1 are fitted and fixed in the concave portion 2e of the bottom plate 2a and the concave portion 2f of the upper plate 2d, and the cooling air A is applied only to the side surfaces. Because of the flow, only the central portion of the unit cell 1 that generates the most heat can be effectively cooled, and the flow of the cooling air A is not obstructed by the connection bar 7 or the like. Further, each cell 1 is in an upright state with the bottom face down, and the bottom plate 2a
The unit cell 1 can be used in the most stable and natural state because it is reliably supported by the concave portion 2e.
【００２８】なお、上記実施形態では、各列の単電池１
を真っ直ぐに並べる場合について説明したが、これを斜
めに並べて側板２ｂや仕切り板２ｃの側壁を真っ直ぐに
形成することもできる。即ち、図１に示す上下の側板２
ｂに対して図示左右の側板２ｂや仕切り板２ｃを直交さ
せて、モジュールケース２を平行四辺形状ではなく方形
とすることができる。また、上記実施形態では、長円筒
型の単電池１について説明したが、直方体形状の角型の
単電池１や円筒型の単電池１を用いることも可能であ
る。さらに、上記実施形態では、上面に正負の端子１
ｃ，１ｄを設けた単電池１について説明したが、底面に
も正負いずれかの端子を設けるようにしてもよく、底面
にのみ正負双方の端子を設けることもできる。単電池１
の底面に端子を設けた場合は、凹部２ｅにも貫通孔を設
けて、底板２ａの下方でこの端子の接続を行うようにす
れば、冷却風Ａの流れを阻害するおそれは生じない。ま
た、上記実施形態では、リチウムイオン二次電池の単電
池１を用いる場合について説明したが、この単電池１の
電池の種類は任意である。In the above embodiment, the cells 1 in each row are
Have been described in a straight line, but it is also possible to form the side walls 2b and the side walls of the partition plate 2c straight by arranging them obliquely. That is, the upper and lower side plates 2 shown in FIG.
The module case 2 can be formed in a rectangular shape instead of a parallelogram by making the left and right side plates 2b and the partition plate 2c shown in FIG. Further, in the above-described embodiment, the long cylindrical unit cell 1 has been described. However, a rectangular parallelepiped unit cell 1 or a cylindrical unit cell 1 may be used. Furthermore, in the above embodiment, the positive and negative terminals 1
Although the single cell 1 provided with c and 1d has been described, either the positive or negative terminal may be provided on the bottom surface, or both the positive and negative terminals may be provided only on the bottom surface. Cell 1
If a terminal is provided on the bottom surface of the bottom plate, if a through hole is also provided in the concave portion 2e and this terminal is connected below the bottom plate 2a, there is no possibility that the flow of the cooling air A is obstructed. Further, in the above-described embodiment, the case where the unit cell 1 of the lithium ion secondary battery is used has been described, but the type of the unit cell 1 is arbitrary.
【００２９】さらに、上記実施形態では、底板２ａと上
板２ｄの間の周囲を側板２ｂで囲み内部を仕切り板２ｃ
で仕切ったモジュールケース２を用いる場合について説
明したが、複数の単電池１を１列や複数列に並べて、そ
の周囲に導入通路５や排出通路６と導入口３や排出口４
を形成した構造であれば、必ずしもこのモジュールケー
ス２のような構成である必要はない。また、上記実施形
態では、バッテリボックスに設けたファンによって導入
口３から冷却風Ａを導入する場合について説明したが、
この冷却風Ａを送り込む手段は、他のどのような手段を
用いてもよい。さらに、上記実施形態では、単電池１の
冷却のために空気の冷却風Ａを用いたが、冷却用の流体
であれば、不活性ガス等の他の気体や、水や有機溶媒又
はオイル等の液体を用いることも可能である。Further, in the above embodiment, the periphery between the bottom plate 2a and the upper plate 2d is surrounded by the side plate 2b and the inside is partitioned by the partition plate 2c.
The case where the module case 2 partitioned by the above is used has been described. However, the plurality of cells 1 are arranged in one row or a plurality of rows, and the introduction path 5 and the discharge path 6 and the introduction port 3 and the
Is not necessarily required to have a configuration like the module case 2. In the above embodiment, the case where the cooling air A is introduced from the inlet 3 by the fan provided in the battery box has been described.
As means for sending the cooling air A, any other means may be used. Further, in the above-described embodiment, the cooling air A of air is used for cooling the unit cells 1. However, any other gas such as an inert gas, water, an organic solvent, oil, or the like may be used as a cooling fluid. Can be used.
【００３０】[0030]
【発明の効果】以上の説明から明らかなように、本発明
の組電池によれば、導入口から導入された冷却風等が徐
々に狭くなる導入通路を通る間に順次単電池の間を通り
抜け、徐々に広くなる排出通路を通って排出口から排出
されるので、各単電池を均一に冷却することができるよ
うになる。As is apparent from the above description, according to the battery pack of the present invention, while passing through the introduction passage in which the cooling air and the like introduced from the introduction port gradually narrows, the battery sequentially passes between the cells. Since the battery cell is discharged from the discharge port through a gradually widening discharge passage, each unit cell can be cooled uniformly.
【図１】本発明の一実施形態を示すものであって、組電
池の横断面平面図である。FIG. 1, showing an embodiment of the present invention, is a cross-sectional plan view of an assembled battery.
【図２】本発明の一実施形態を示すものであって、組電
池のモジュールケースを示す斜視図である。FIG. 2, showing an embodiment of the present invention, is a perspective view illustrating a module case of an assembled battery.
【図３】本発明の一実施形態を示すものであって、モジ
ュールケースに収納された単電池を示す縦断面正面図で
ある。FIG. 3, showing an embodiment of the present invention, is a longitudinal sectional front view showing a unit cell housed in a module case.
【図４】従来例を示すものであって、組電池の横断面平
面図である。FIG. 4 shows a conventional example, and is a cross-sectional plan view of an assembled battery.
【図５】単電池の斜視図である。FIG. 5 is a perspective view of a unit cell.
１ 単電池 ２ モジュールケース ２ａ 底板 ２ｂ 側板 ２ｃ 仕切り板 ２ｄ 上板 ２ｅ 凹部 ２ｆ 凹部 ３ 導入口 ４ 排出口 ５ 導入通路 ６ 排出通路 DESCRIPTION OF SYMBOLS 1 Unit cell 2 Module case 2a Bottom plate 2b Side plate 2c Partition plate 2d Upper plate 2e Depression 2f Depression 3 Inlet 4 Outlet 5 Inlet 6 Inlet
Claims (5)
けられた上面と底面を有し、これらの間を側面で覆った
複数個の単電池を、底面を下にして相互に間隔を開け１
列又は複数列に並べてモジュールケース内に収納した組
電池において、これら単電池の列の一方の側方に、単電
池の列の側面に沿って流体が流れるように形成された流
体通路であって、単電池の並び方向の一端側に行くほど
流体の通路が狭くなる導入通路が設けられると共に、こ
の列の他方の側方に、単電池の列の側面に沿って流体が
流れるように形成された排出通路が設けられ、かつ、導
入通路の広い側の端部に流体を導入する導入口が設けら
れると共に、排出通路の一端側の端部に流体を排出する
排出口が設けられたことを特徴とする組電池。1. A plurality of cells having an upper surface and a bottom surface provided with positive and negative terminals on one or both sides thereof and having a side surface therebetween are spaced from each other with the bottom surface facing down. 1
A fluid passage formed in one or more rows of the unit cells in a battery pack arranged in a row or a plurality of rows and housed in a module case so that fluid flows along a side surface of the unit cell row. An introduction passage is provided in which the fluid passage becomes narrower toward one end in the direction in which the cells are arranged, and the other side of this row is formed so that the fluid flows along the side surface of the row of cells. Discharge passage is provided, and an introduction port for introducing fluid is provided at a wide end of the introduction passage, and a discharge port for discharging fluid is provided at one end of the discharge passage. Characteristic battery pack.
けられた上面と底面を有し、これらの間を側面で覆った
複数個の単電池を、底面を下にして相互に間隔を開け１
列又は複数列に並べてモジュールケース内に収納した組
電池において、これら単電池の列の一方の側方に、単電
池の列の側面に沿って流体が流れるように形成された流
体通路であって、単電池の並び方向の一端側に行くほど
流体の通路が狭くなる導入通路が設けられると共に、こ
の列の他方の側方に、単電池の列の側面に沿って流体が
流れるように形成された流体通路であって、単電池の並
び方向の一端側に行くほど流体の通路が広くなる排出通
路が設けられ、かつ、導入通路の広い側の端部に流体を
導入する導入口が設けられると共に、排出通路の広い側
の端部に流体を排出する排出口が設けられたことを特徴
とする組電池。2. A plurality of cells having an upper surface and a bottom surface provided with positive and negative terminals on one or both sides thereof, and having a side surface therebetween, are spaced apart from each other with the bottom surface facing down. 1
A fluid passage formed in one or more rows of the unit cells in a battery pack arranged in a row or a plurality of rows and housed in a module case so that fluid flows along a side surface of the unit cell row. An introduction passage is provided in which the fluid passage becomes narrower toward one end in the direction in which the cells are arranged, and the other side of this row is formed so that the fluid flows along the side surface of the row of cells. A fluid passage, wherein a discharge passage is provided in which the fluid passage becomes wider toward one end in the direction in which the cells are arranged, and an introduction port for introducing the fluid is provided at an end of the introduction passage that is wider. And a discharge port for discharging a fluid is provided at a wide end of the discharge passage.
側ほど単電池から遠ざかる側壁が形成されると共に、こ
の列の他方の側方に、排出口側ほど単電池から遠ざかる
側壁が形成されたことを特徴とする請求項２に記載の組
電池。3. A side wall which is closer to the inlet side from the unit cell on one side of the row of unit cells, and a side wall which is closer to the outlet side from the unit cell on the other side of the row. 3. The battery pack according to claim 2, wherein:
面との間を長円筒形の側面で覆った長円筒型のものであ
り、単電池の列がこの長円筒形の側面の平坦な面に直交
する方向に揃えて並べられたことを特徴とする請求項
１，２又は３に記載の組電池。4. The unit cell according to claim 1, wherein the unit cell has a long cylindrical shape in which an oblong flat top surface and a bottom surface are covered with a long cylindrical side surface. The assembled battery according to claim 1, wherein the assembled battery is arranged in a direction orthogonal to a flat surface.
ールケースの底板の凹部に嵌まり込むと共に、これら各
単電池の上面を含む上部がモジュールケースの上板の凹
部に嵌まり込んで支持されていることを特徴とする請求
項１，２，３又は４に記載の組電池。5. A bottom portion including a bottom surface of each unit cell fits into a concave portion of a bottom plate of the module case, and an upper portion including an upper surface of each unit cell fits into a concave portion of an upper plate of the module case and supported. The battery pack according to claim 1, 2, 3, or 4, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000102339A JP2001283940A (en) | 2000-04-04 | 2000-04-04 | Set battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000102339A JP2001283940A (en) | 2000-04-04 | 2000-04-04 | Set battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001283940A true JP2001283940A (en) | 2001-10-12 |
Family
ID=18616239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000102339A Pending JP2001283940A (en) | 2000-04-04 | 2000-04-04 | Set battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001283940A (en) |
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| WO2003107458A1 (en) * | 2002-06-17 | 2003-12-24 | 松下電器産業株式会社 | Combined battery and battery holding frame |
| KR100430504B1 (en) * | 2002-03-26 | 2004-05-10 | 주식회사 비츠로셀 | A vent hole support unit of packed lithium battery |
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| WO2008074034A1 (en) * | 2006-12-14 | 2008-06-19 | Johnson Controls - Saft Advanced Power Solutions Llc | Battery module |
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| US8248030B2 (en) | 2006-01-26 | 2012-08-21 | Johnson Controls Technology Company | Device for monitoring cell voltage |
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-
2000
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| WO2009079962A1 (en) * | 2007-12-25 | 2009-07-02 | Byd Company Limited | Vehicle with battery system |
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| JP2012146588A (en) * | 2011-01-14 | 2012-08-02 | Hitachi Vehicle Energy Ltd | Battery module |
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