JP2003217560A - Cylindrical battery pack - Google Patents

Cylindrical battery pack

Info

Publication number
JP2003217560A
JP2003217560A JP2002011448A JP2002011448A JP2003217560A JP 2003217560 A JP2003217560 A JP 2003217560A JP 2002011448 A JP2002011448 A JP 2002011448A JP 2002011448 A JP2002011448 A JP 2002011448A JP 2003217560 A JP2003217560 A JP 2003217560A
Authority
JP
Japan
Prior art keywords
cylindrical
battery pack
terminal
cylindrical battery
battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002011448A
Other languages
Japanese (ja)
Inventor
Takeshi Kondo
近藤  猛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Storage Battery Co Ltd
Original Assignee
Japan Storage Battery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Storage Battery Co Ltd filed Critical Japan Storage Battery Co Ltd
Priority to JP2002011448A priority Critical patent/JP2003217560A/en
Publication of JP2003217560A publication Critical patent/JP2003217560A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Connection Of Batteries Or Terminals (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cylindrical battery pack shaped into a compact form with connecting materials of a single shape, easy to connect and capable of preventing false connection as well as to improve productivity of the cylindrical battery pack. <P>SOLUTION: With the cylindrical battery pack consisting of a plurality of cylindrical unit cells 10, each cylindrical unit cell is provided with a pair of positive electrode terminals 11 and negative electrode terminals 12 at its one end face and, at the same time, one of the pair of positive and negative terminals is set at a center part of the end face. <P>COPYRIGHT: (C)2003,JPO

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は円筒型単電池を複数
組み合わせてなる円筒型組電池に関する。 【0002】 【従来の技術】円筒型単電池の端子配置には各種の形状
が存在する。例えば図1(A)に側面図を示すような乾
電池のように、円筒の一方の端面に第1の極性を備えた
凸状端子1を備え、もう一方の端面に第2の極性を備え
た平板状端子2を備えるもの、図1(B)に側面図を示
すような意匠公報第1098785号記載の電池のよう
に、両方の端面にそれぞれ凸状端子1を備えるもの、図
1(C)に斜視図を示すような意匠公報第110517
1号記載の電池のように、一方の端面に一対の凸状端子
1を備え、その凸状端子1が巻回軸を中心にした点対称
の位置に設けられるもの、図1(D)に斜視図を示すよ
うな特開平6−124696号公報記載の電池のよう
に、一方の端面に一対の凸状端子1を備え、その凸状端
子1の一方が巻回軸の延長線上に設けられるもの、など
がある。 【0003】図1(A)に示すような形状の円筒型単電
池を組み合わせて円筒型組電池とする場合、図2(A)
に示すように、直線状(縦方向)に組み合わせるにはリ
ード線等を必要とせず嵌合や圧接によって接続すること
が可能であるが、平面状(横方向)に組み合わせる場合
には、図2(B)のように長いリード線3(図ではわか
りやすくするため斜線を記入)や接続ケース(図示せ
ず)を必要とする場合がある。またリード線3を短くし
ようとして、図2(C)のような配置にする場合もあ
る。図2(B)や図2(C)の配置の場合、凸状端子1
やリード線3によって円筒型単電池の一端面を下にして
立てることが困難になり、別途ケース等が必要になる場
合がある。 【0004】 【発明が解決しようとする課題】このため、図1(C)
に示すような形状の円筒型端電池を平面状(横方向)に
組み合わせて円筒型組電池とする場合、図3に側面図を
示すように短いリード線3(図ではわかりやすくするた
め斜線を記入)で接続ができ、円筒型単電池の一端面を
下にして立てることも容易である。 【0005】しかし図3に示すような円筒型組電池の組
合せにおいて、その組み合わせ方によって不都合を生じ
る場合がある。例えば図4に示すような円筒型単電池1
0の組合せの場合、第1の円筒型単電池の負極端子11
と第2の円筒型単電池の正極端子12とを接続する接続
部材13、14が2種類必要となる。また円筒型単電池
の組合せによっては、接続部材が3種類以上必要となる
場合も存在する。接続部材を多種必要とすることは、管
理費、製造費のコストアップにつながる。さらに、正負
極端子が対称位置に配されているので、誤接続する可能
性もある。 【0006】本発明は上記課題を解決するためになされ
たものであり、円筒型単電池の端子配置を規定すること
によって、円筒型単電池を複数組み合わせた円筒型組電
池の接続性を改善するとともに、信頼性の向上を図るも
のである。 【0007】 【課題を解決するための手段】上記課題を解決するため
になした第1の発明は、複数の円筒型単電池よりなる円
筒型組電池において、前記円筒型単電池は一端面に一対
の正負極端子とを備えるとともに、前記一対の正負極端
子の一方が前記端面中央部に設けられることを特徴とす
る円筒型組電池である。 【0008】 【発明の実施の形態】本発明による実施例の上面図を図
5に示す。円筒型単電池10は、一端面に正負一対の端
子11、12を備え、前記正負一対の端子11、12は
いずれもボルト状であることが好ましい。前記正負一対
の端子11、12の一方が巻回中心上に設けられている
(図2では正極11)ことが特徴である。 【0009】このような構成とする利点は、正極端子と
負極端子との識別が容易で、誤接続が防止され、信頼性
の高い円筒型組電池を得ることができる。この場合、す
べての接続部材15の形状が同じものを使用でき、生産
効率が向上する。 【0010】また、まず円筒型単電池10に接続部材1
5を取り付けるときに、ナットを完全に締め付けずに、
円筒型単電池10と接続部材15とが自由に移動できる
状態で所定の個数の円筒型単電池10を円筒型組電池と
し、円筒型組電池の形状を、例えば図5に示すような希
望の形状とした後にナットを完全に締め付け、接続部材
15と円筒型単電池10とが固定されるようにすること
により、熟練を要することなく誰にでも希望の形状の円
筒型組電池を構成することもできる。なお、図5では、
図4同様直列接続の例を示すが、並列接続の場合も同様
に実施することも可能である。 【0011】なお、端子形状は上述の通り、ボルト状で
あれば好ましいが、特にボルト状とせず、ナット締めに
よらずに溶接等の手法でも実施が可能である。 【0012】図6は本発明における他の実施例の上面図
である。この場合も図5に示した実施例と同様に、円筒
型単電池10を円筒型組電池とすることができる。図6
は図5の場合よりも円筒型単電池間の間隔が狭い、より
コンパクトな形状の例である。 【0013】上記実施形態をなすための接続部材は導電
性剛体であればよく、その材質、厚み、大きさ等は設計
に係わる事項である。ボルト、ナットについてもその材
質、厚み、大きさ等は設計に係わる事項である。 【0014】また本発明の円筒型単電池の構成をなすた
めには、例えばリチウム二次電池では特開平6−124
696号公報に記載のように、一方の極性を有する有底
電池缶の底部から、発電要素の巻回軸に相当する空間か
ら集電体を上面に向かって取り出すこともできるし、鉛
電池においては、円筒型発電要素のストラップ16、1
7の形状を図7に示すような形状とし、図示の位置より
正極極柱11と負極極柱12とを取り出すことによって
なすことができる。この場合、ストラップ16、17の
形状が複雑ではあるが、集電耳を端子鋳型に投入した後
に、溶融鉛(または溶融鉛合金)を端子鋳型に投入する
ことによって、各集電耳間の溶接とストラップの形成と
が同時におこなえるキャスト・オン・ストラップ法(C
OS法)を使用すれば形状の複雑なストラップであって
も容易に構成することが可能である。 【0015】なお、本発明においては、正負いずれかの
端子が巻回中心上に設けられることが要件である。端子
自体が円筒形であり、その中心と巻回中心とが一致して
いることが望ましいが、端子の形状については設計に関
する事項である。 【0016】また、本発明による円筒型組電池の場合、
円筒型単電池の端子がボルト状であることが望ましい。
鉛電池の場合のCOS法によるボルト状端子の製造用ス
トラップ鋳型の断面を図8に示す(ボルト22のみ断面
とせず)。鉛電池端子の場合、COS法を実施する際
に、ストラップ鋳型21にボルトを事前に設置できる部
分23を設け、その部分にボルト22を取り付けてか
ら、ストラップ鋳型21に溶融鉛(溶融鉛合金)を投入
することによってボルト状端子とすることができる。な
お、図8の24は、ストラップ取り出し用の突き出しピ
ンである。 【0017】 【発明の効果】本発明により、単一形状の接続部材にて
複数の円筒型単電池を接続しても、コンパクトな形状に
まとめることができ、さらにはその接続も容易である円
筒型組電池を提供できるようになり、生産性が向上す
る。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylindrical assembled battery formed by combining a plurality of cylindrical cells. 2. Description of the Related Art Various types of terminal arrangements exist for cylindrical cells. For example, like a dry battery whose side view is shown in FIG. 1A, a convex terminal 1 having a first polarity is provided on one end surface of a cylinder, and a second polarity is provided on the other end surface. FIG. 1C shows a battery provided with a flat terminal 2, a battery provided with convex terminals 1 on both end surfaces, such as a battery described in Design Publication No. 1098785, a side view of which is shown in FIG. Design Publication No. 110517 as shown in a perspective view in FIG.
As shown in FIG. 1 (D), a battery provided with a pair of convex terminals 1 on one end surface and provided at a point-symmetrical position about a winding axis as in the battery described in No. 1. As shown in a perspective view of a battery described in JP-A-6-124696, a pair of convex terminals 1 is provided on one end surface, and one of the convex terminals 1 is provided on an extension of the winding shaft. There are things. When a cylindrical cell is formed by combining cylindrical cells having a shape as shown in FIG. 1A, FIG.
As shown in FIG. 2, it is possible to connect them by fitting or crimping without using a lead wire in order to combine them in a straight line (vertical direction). In some cases, a long lead wire 3 (shown with diagonal lines for clarity) or a connection case (not shown) as shown in FIG. In some cases, the lead wires 3 are arranged in a manner as shown in FIG. In the case of the arrangement of FIG. 2B or FIG.
It is difficult to stand the cylindrical unit cell with one end face down by the lead wire 3 or the lead wire 3, and a separate case or the like may be required. [0004] For this reason, FIG. 1 (C)
When a cylindrical battery pack is formed by combining cylindrical end batteries having the shape shown in FIG. 3 in a planar shape (horizontal direction), a short lead wire 3 (in FIG. ), And it is easy to stand up with one end face of the cylindrical unit cell facing down. [0005] However, in the combination of the cylindrical battery packs as shown in FIG. For example, a cylindrical cell 1 as shown in FIG.
0, the negative terminal 11 of the first cylindrical unit cell
Two kinds of connecting members 13 and 14 for connecting the positive electrode terminal 12 of the second cylindrical unit cell and the positive electrode terminal 12 are required. Also, depending on the combination of the cylindrical unit cells, there are cases where three or more types of connection members are required. The need for various types of connecting members leads to an increase in management costs and manufacturing costs. Furthermore, since the positive and negative terminals are arranged at symmetrical positions, there is a possibility of erroneous connection. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and improves the connectivity of a cylindrical battery pack in which a plurality of cylindrical battery cells are combined by defining the terminal arrangement of the cylindrical battery cells. At the same time, reliability is improved. According to a first aspect of the present invention, there is provided a cylindrical battery comprising a plurality of cylindrical cells, wherein the cylindrical cells are provided on one end surface. A cylindrical battery pack comprising a pair of positive and negative electrode terminals, wherein one of the pair of positive and negative electrode terminals is provided at the center of the end face. FIG. 5 is a top view of an embodiment according to the present invention. The cylindrical unit cell 10 includes a pair of positive and negative terminals 11 and 12 on one end surface, and each of the pair of positive and negative terminals 11 and 12 is preferably a bolt. One of the pair of positive and negative terminals 11, 12 is provided on the center of the winding (the positive electrode 11 in FIG. 2). The advantage of this configuration is that a positive electrode terminal and a negative electrode terminal can be easily distinguished, erroneous connection is prevented, and a highly reliable cylindrical battery pack can be obtained. In this case, all connection members 15 having the same shape can be used, and the production efficiency is improved. First, the connecting member 1 is attached to the cylindrical cell 10.
When installing 5, do not completely tighten the nut,
In a state where the cylindrical unit cells 10 and the connecting members 15 can move freely, a predetermined number of cylindrical unit cells 10 are used as cylindrical unit cells, and the shape of the cylindrical unit cell is changed to a desired one as shown in FIG. After the shape is formed, the nut is completely tightened so that the connecting member 15 and the cylindrical unit cell 10 are fixed, so that anybody can form a cylindrical assembled battery of a desired shape without skill. You can also. In FIG. 5,
Although an example of series connection is shown as in FIG. 4, it is also possible to implement the same in the case of parallel connection. As described above, the terminal shape is preferably a bolt shape. However, the terminal shape is not particularly limited to a bolt shape, and the terminal shape can be implemented by a method such as welding without depending on nut tightening. FIG. 6 is a top view of another embodiment of the present invention. Also in this case, similarly to the embodiment shown in FIG. 5, the cylindrical unit cell 10 can be a cylindrical assembled battery. FIG.
Is an example of a more compact shape in which the interval between the cylindrical cells is narrower than in the case of FIG. The connection member for implementing the above embodiment may be a conductive rigid body, and its material, thickness, size, etc. are matters relating to design. The material, thickness, size, etc. of bolts and nuts are matters related to design. In order to form the cylindrical unit cell of the present invention, for example, a lithium secondary battery is disclosed in Japanese Patent Laid-Open No. 6-124.
As described in JP-A-696, the current collector can be taken out from the bottom of the bottomed battery can having one polarity toward the upper surface from the space corresponding to the winding axis of the power generating element. Are cylindrical power generation element straps 16, 1.
7 can be made by taking the shape shown in FIG. 7 and taking out the positive electrode pole 11 and the negative electrode pole 12 from the positions shown. In this case, although the shapes of the straps 16 and 17 are complicated, the welding between the current collecting ears is performed by charging the current collecting ears into the terminal mold and then charging the molten lead (or molten lead alloy) into the terminal mold. Cast-on-strap method (C
Using the OS method), even a strap having a complicated shape can be easily configured. In the present invention, it is required that either the positive or negative terminal is provided on the center of the winding. It is desirable that the terminal itself be cylindrical and its center coincide with the center of winding, but the shape of the terminal is a matter of design. In the case of the cylindrical battery pack according to the present invention,
It is desirable that the terminals of the cylindrical unit cell have a bolt shape.
FIG. 8 shows a cross section of a strap mold for manufacturing a bolt-shaped terminal by the COS method in the case of a lead battery (only the bolt 22 is not a cross section). In the case of a lead battery terminal, when carrying out the COS method, a portion 23 in which bolts can be previously set is provided in the strap mold 21, a bolt 22 is attached to the portion, and molten lead (molten lead alloy) is attached to the strap mold 21. To form a bolt-shaped terminal. Note that reference numeral 24 in FIG. 8 denotes a protrusion pin for taking out the strap. According to the present invention, even when a plurality of cylindrical cells are connected by a single-shaped connecting member, the cylindrical cells can be formed into a compact shape, and the connection can be easily performed. A battery pack can be provided, and productivity is improved.

【図面の簡単な説明】 【図1】 従来の円筒型単電池 【図2】 従来の円筒型組電池 【図3】 従来の円筒型組電池 【図4】 従来の円筒型組電池 【図5】 本発明による円筒型組電池 【図6】 本発明による円筒型組電池 【図7】 単鉛電池のストラップ構造 【図8】 ボルト端子を備えたストラップ鋳型 【符号の説明】 1 凸状端子 2 平板状端子 3 リード線 10 単電池 11 正極端子(正極極柱) 12 負極端子(負極極柱) 13 接続部材 14 接続部材 15 接続部材 16 ストラップ 17 ストラップ 21 ストラップ鋳型 22 ボルト 23 ボルト取り付け部 24 突き出しピン[Brief description of the drawings] Fig. 1 Conventional cylindrical cell FIG. 2 A conventional cylindrical battery pack FIG. 3 shows a conventional cylindrical battery pack. FIG. 4 shows a conventional cylindrical battery pack. FIG. 5 is a cylindrical assembled battery according to the present invention. FIG. 6 shows a cylindrical battery pack according to the present invention. FIG. 7: Strap structure of a single lead battery FIG. 8: Strap mold with bolt terminals [Explanation of symbols] 1 convex terminal 2 Flat terminal 3 Lead wire 10 cells 11 Positive electrode terminal (positive electrode pole) 12 Negative electrode terminal (negative electrode pole) 13 Connection member 14 Connection member 15 Connecting members 16 Strap 17 Strap 21 Strap mold 22 volts 23 bolt mounting part 24 Extrusion Pin

Claims (1)

【特許請求の範囲】 【請求項1】 複数の円筒型単電池よりなる円筒型組電
池において、 前記円筒型単電池は一端面に一対の正負極端子とを備え
るとともに、 前記一対の正負極端子の一方が前記端面中央部に設けら
れることを特徴とする円筒型組電池。
Claims: 1. A cylindrical assembled battery comprising a plurality of cylindrical cells, wherein the cylindrical cell has a pair of positive and negative terminals on one end surface, and the pair of positive and negative terminals. Is provided at the center of the end face.
JP2002011448A 2002-01-21 2002-01-21 Cylindrical battery pack Pending JP2003217560A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002011448A JP2003217560A (en) 2002-01-21 2002-01-21 Cylindrical battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002011448A JP2003217560A (en) 2002-01-21 2002-01-21 Cylindrical battery pack

Publications (1)

Publication Number Publication Date
JP2003217560A true JP2003217560A (en) 2003-07-31

Family

ID=27648926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002011448A Pending JP2003217560A (en) 2002-01-21 2002-01-21 Cylindrical battery pack

Country Status (1)

Country Link
JP (1) JP2003217560A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006313793A (en) * 2005-05-06 2006-11-16 Asahi Glass Co Ltd Storage element
JP2007189188A (en) * 2005-12-13 2007-07-26 Matsushita Electric Ind Co Ltd Capacitor
US11139529B2 (en) 2017-12-26 2021-10-05 Lg Chem, Ltd. Cylindrical battery cell assembly with improved space utilization and safety, and battery module comprising same
KR20220076054A (en) 2020-11-30 2022-06-08 에이치그린파워 주식회사 A cartridge for cylindrical battery cell

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006313793A (en) * 2005-05-06 2006-11-16 Asahi Glass Co Ltd Storage element
WO2006121006A1 (en) * 2005-05-06 2006-11-16 Asahi Glass Company, Limited Accumulator element
US7474520B2 (en) 2005-05-06 2009-01-06 Asahi Glass Company, Limited Storage device
JP2007189188A (en) * 2005-12-13 2007-07-26 Matsushita Electric Ind Co Ltd Capacitor
US11139529B2 (en) 2017-12-26 2021-10-05 Lg Chem, Ltd. Cylindrical battery cell assembly with improved space utilization and safety, and battery module comprising same
KR20220076054A (en) 2020-11-30 2022-06-08 에이치그린파워 주식회사 A cartridge for cylindrical battery cell

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