JP2003017020A - Battery pack - Google Patents
Battery packInfo
- Publication number
- JP2003017020A JP2003017020A JP2001198695A JP2001198695A JP2003017020A JP 2003017020 A JP2003017020 A JP 2003017020A JP 2001198695 A JP2001198695 A JP 2001198695A JP 2001198695 A JP2001198695 A JP 2001198695A JP 2003017020 A JP2003017020 A JP 2003017020A
- Authority
- JP
- Japan
- Prior art keywords
- unit cell
- terminal cover
- battery pack
- battery
- terminal
- 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】本発明はパック電池に関し、
とくに充放電容量に対して外形を小さくできるパック電
池に関する。TECHNICAL FIELD The present invention relates to a battery pack,
In particular, the present invention relates to a battery pack whose outer shape can be reduced with respect to charge / discharge capacity.
【０００２】[0002]
【従来の技術】現在使用されている最も一般的なパック
電池は、プラスチック製の外装ケースに、リチウムイオ
ン電池等の素電池と保護基板等を収納している。このパ
ック電池は、収納する素電池に対して外形が大きくな
る。それは、プラスチック製の外装ケースを充分な強度
とするために厚く成形する必要があるからである。この
ため、パック電池全体の体積に対する充放電容量が小さ
くなる欠点がある。パック電池の外形を小さくするため
に、外装ケースを金属ケースとするパック電池が、特開
２０００−２８５９６９号公報に記載される。この公報
のパック電池の斜視図を図１に示す。このパック電池
は、外装ケース１７をニッケル銅合金で製作している。
金属製の外装ケース１７は、先端面をマイナス端子とし
ている。さらに、外装ケース１７は、開口部に設けた折
曲片１７Ａを内側に折曲し、これを回路基板１８の導電
部に半田付けして固定している。2. Description of the Related Art The most general battery pack used at present has an outer case made of plastic in which a unit cell such as a lithium ion battery and a protective substrate are housed. This battery pack has a larger outer shape than the unit cell to be stored. This is because the plastic outer case needs to be formed thick to have sufficient strength. Therefore, there is a drawback that the charge / discharge capacity with respect to the entire volume of the battery pack is reduced. Japanese Patent Laid-Open No. 2000-285969 discloses a battery pack in which an outer case is a metal case in order to reduce the size of the battery pack. A perspective view of the battery pack of this publication is shown in FIG. In this battery pack, the outer case 17 is made of nickel-copper alloy.
The metal outer case 17 has a minus terminal at the tip surface. Further, in the outer case 17, a bent piece 17A provided in the opening is bent inward and fixed to the conductive portion of the circuit board 18 by soldering.
【０００３】[0003]
【発明が解決しようとする課題】この図のパック電池
は、外装ケースを金属ケースとするので、プラスチック
ケースのパック電池に比較すると外形を小さくできる。
しかしながら、この構造のパック電池は製造コストが高
くなるばかりでなく、重くなる欠点がある。外装ケース
の材料コストと成形コストの両方が高く、さらに外装ケ
ースに素電池と回路基板等を定位置に入れて折曲片を折
曲し、さらに半田付けして固定して組み立てるからであ
る。さらに、金属製の外装ケースは薄くできるが、プラ
スチック製に比較して重くなる。パック電池は、軽く小
さくすることが極めて大切である。高価であるにもかか
わらずリチウムイオン電池が多用されるのは、軽くて小
さいからである。素電池にリチウムイオン電池を使用し
て軽くしても、外装ケースが重くなるとリチウムイオン
電池の特長が生かされなくなる。したがって、いかに軽
くできるかは、パック電池において極めて大切な特性で
ある。さらに、この図のパック電池は、外装ケースを金
属製とするので、表面を絶縁処理する必要がある。金属
ケースが露出していると、ケースと凸部電極に金属等が
接触してショートしやすくなるからである。このため、
外装ケースの表面に絶縁シートを接着するなどの絶縁処
理が必要で、この処理によって製造コストはさらに高く
なってしまう。Since the battery pack shown in this figure uses a metal case as the outer case, it can have a smaller outer shape than a battery pack of a plastic case.
However, the battery pack having this structure not only increases the manufacturing cost but also becomes heavy. This is because both the material cost and the molding cost of the outer case are high, and further, the unit cell, the circuit board, and the like are put in a fixed position in the outer case, the bent pieces are bent, and then soldered and fixed to be assembled. Furthermore, although the metal outer case can be made thin, it is heavier than the plastic case. It is extremely important that the battery pack is light and small. Lithium ion batteries are often used despite their high price because they are light and small. Even if a lithium-ion battery is used as the unit cell to make it lighter, the features of the lithium-ion battery will not be utilized if the outer case becomes heavier. Therefore, how light can be made is an extremely important characteristic in a battery pack. Further, in the battery pack of this figure, the outer case is made of metal, and therefore the surface needs to be insulated. This is because, when the metal case is exposed, metal or the like comes into contact with the case electrode and the convex electrode, which easily causes a short circuit. For this reason,
Insulation treatment such as adhering an insulating sheet to the surface of the outer case is required, and this treatment further increases the manufacturing cost.
【０００４】本発明は、このような欠点を解決すること
を目的に開発されたものである。本発明の重要な目的
は、小さくて軽くでき、しかも安価に多量生産できるパ
ック電池を提供することにある。The present invention was developed for the purpose of solving such drawbacks. An important object of the present invention is to provide a battery pack that is small and light, and can be mass-produced at low cost.
【０００５】[0005]
【課題を解決するための手段】本発明のパック電池は、
素電池１と、この素電池１の電極に接続された出力端子
９と、この出力端子９を露出させる電極窓６を開口して
いる端子カバー２と、素電池１と端子カバー２とを被覆
している熱収縮チューブ５とを備える。端子カバー２
は、素電池１の端面に装着される装着面２Ｄと、装着面
２Ｄと反対側で前記電極窓６を開口した先端面２Ａと、
装着面２Ｄと先端面２Ａとの間の外周面２Ｃに形成され
た段差部１３とを有する。パック電池は、熱収縮チュー
ブ５の端部を、段差部１３の位置で収縮させて、素電池
１と端子カバー２とを連結している。The battery pack of the present invention comprises:
The unit cell 1, an output terminal 9 connected to an electrode of the unit cell 1, a terminal cover 2 having an opening for an electrode window 6 exposing the output terminal 9, and the unit cell 1 and the terminal cover 2 are covered. And the heat-shrinkable tube 5. Terminal cover 2
Is a mounting surface 2D that is mounted on the end surface of the unit cell 1, and a tip surface 2A that opens the electrode window 6 on the side opposite to the mounting surface 2D.
It has a step portion 13 formed on the outer peripheral surface 2C between the mounting surface 2D and the front end surface 2A. In the battery pack, the end of the heat-shrinkable tube 5 is shrunk at the position of the step 13 to connect the unit cell 1 and the terminal cover 2.
【０００６】本発明のパック電池は、好ましくは、端子
カバー２の外周面２Ｃを素電池１の外周面と同一面とす
る。このパック電池は、端子カバー２と素電池１との境
界部分を目立たなくして外観を良くできる特長がある。In the battery pack of the present invention, the outer peripheral surface 2C of the terminal cover 2 is preferably flush with the outer peripheral surface of the unit cell 1. This battery pack has a feature that the boundary between the terminal cover 2 and the unit cell 1 can be made inconspicuous to improve the appearance.
【０００７】さらに、本発明の請求項３のパック電池
は、素電池１と、この素電池１の電極に接続された出力
端子９と、この出力端子９を露出させる電極窓６を開口
している端子カバー２と、素電池１と端子カバー２とを
被覆している熱収縮チューブ５とを備える。端子カバー
２は、外周面２Ｃを素電池１の外周面を同一面としてい
る。このパック電池は、互いに同一面である端子カバー
２と素電池１の表面に連結シート１６を接着して、この
連結シート１６で端子カバー２と素電池１とを連結し、
連結シート１６の外側に熱収縮チューブ５を密着させて
いる。このパック電池は、好ましくは、素電池１を、両
面を平面状とする薄型電池として、薄型電池の両面に端
子カバー２まで延長して連結シート１６を接着する。Further, in the battery pack of claim 3 of the present invention, the unit cell 1, the output terminal 9 connected to the electrode of the unit cell 1, and the electrode window 6 exposing the output terminal 9 are opened. The terminal cover 2 and the heat-shrinkable tube 5 that covers the unit cell 1 and the terminal cover 2 are provided. The outer peripheral surface 2C of the terminal cover 2 is the same as the outer peripheral surface of the unit cell 1. In this battery pack, a connection sheet 16 is adhered to the surfaces of the terminal cover 2 and the unit cell 1 that are on the same plane, and the connection sheet 16 connects the terminal cover 2 and the unit cell 1.
The heat-shrinkable tube 5 is adhered to the outside of the connecting sheet 16. In this battery pack, preferably, the unit cell 1 is a thin battery whose both surfaces are flat, and the connecting sheet 16 is adhered to both surfaces of the thin battery by extending to the terminal covers 2.
【０００８】さらに、本発明のパック電池は、端子カバ
ー２と素電池１との間に保護基板３を配設して、この保
護基板３に出力端子９を配設することができる。さら
に、このパック電池は、保護基板３と素電池１との間に
ホルダー４を配設することができる。このパック電池
は、好ましくは、端子カバー２の内部に保護基板３とホ
ルダー４を内蔵する。さらに、本発明のパック電池は、
封口側に正負の電極１Ａを有する素電池１を使用し、正
負の電極１Ａをリード板７で出力端子９に電気接続する
ことができる。Further, in the battery pack of the present invention, the protective substrate 3 can be disposed between the terminal cover 2 and the unit cell 1, and the output terminal 9 can be disposed on the protective substrate 3. Further, in this battery pack, the holder 4 can be arranged between the protective substrate 3 and the unit cell 1. This battery pack preferably has a terminal cover 2 and a protective substrate 3 and a holder 4 incorporated therein. Furthermore, the battery pack of the present invention is
The unit cell 1 having the positive and negative electrodes 1A on the sealing side can be used, and the positive and negative electrodes 1A can be electrically connected to the output terminal 9 by the lead plate 7.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。ただし、以下に示す実施例は、本発明
の技術思想を具体化するためのパック電池を例示するも
のであって、本発明はパック電池を以下のものに特定し
ない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. However, the examples described below exemplify the battery pack for embodying the technical idea of the present invention, and the present invention does not specify the battery pack as follows.
【００１０】さらに、この明細書は、特許請求の範囲を
理解しやすいように、実施例に示される部材に対応する
番号を、「特許請求の範囲の欄」、および「課題を解決
するための手段の欄」に示される部材に付記している。
ただ、特許請求の範囲に示される部材を、実施例の部材
に特定するものでは決してない。Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "claims column" and "to solve the problem." It is added to the members shown in "Means column".
However, the members shown in the claims are not limited to the members of the embodiment.
【００１１】図２ないし図６に示すパック電池は、素電
池１と、この素電池１の凸部電極１ａ側の端面に配設さ
れると共に先端面２Ａに電極窓６を開口している端子カ
バー２と、この端子カバー２と素電池１との間に配設し
ている保護基板３と、この保護基板３と素電池１との間
に配設しているホルダー４と、素電池１と端子カバー２
とを被覆している熱収縮チューブ５とを備える。The battery pack shown in FIGS. 2 to 6 is a unit cell 1 and a terminal which is disposed on the end face of the unit cell 1 on the side of the convex electrode 1a and has an electrode window 6 opened at the front end face 2A. The cover 2, the protective substrate 3 disposed between the terminal cover 2 and the unit cell 1, the holder 4 disposed between the protective substrate 3 and the unit cell 1, and the unit cell 1 And terminal cover 2
And the heat-shrinkable tube 5 covering the.
【００１２】素電池１は、両面を平面状とする薄型電池
である。薄型電池は、封口側に正負の電極１Ａを有し、
正負の電極１Ａをリード板７で保護基板３に連結してい
る。素電池１はリチウムイオン電池である。ただ、素電
池は、ニッケル−水素電池やニッケル−カドミウム電池
等の二次電池も使用できる。素電池１をリチウムイオン
電池である薄型電池とするパック電池は、全体を薄く、
軽く、小さくできる。図のパック電池は、素電池１とし
て１個の薄型電池である二次電池を備えているが、本発
明のパック電池は、図７に示すように複数の二次電池を
平行に並べて固定し、これを素電池１として使用するこ
ともできる。The unit cell 1 is a thin battery whose both sides are flat. The thin battery has positive and negative electrodes 1A on the sealing side,
The positive and negative electrodes 1A are connected to the protective substrate 3 by the lead plate 7. The unit cell 1 is a lithium-ion battery. However, as the unit cell, a secondary battery such as a nickel-hydrogen battery or a nickel-cadmium battery can also be used. The battery pack that uses the unit cell 1 as a thin battery that is a lithium-ion battery is
Light and small. The battery pack shown in the figure includes one secondary battery, which is a thin battery, as the unit cell 1. However, the battery pack of the present invention has a plurality of secondary batteries arranged in parallel and fixed as shown in FIG. It can also be used as the unit cell 1.
【００１３】保護基板３はプリント基板で、素電池１の
保護回路を実現する電子部品８を実装している。保護回
路は、素電池１の過充電と過放電を防止する回路、素電
池１を過大な電流から保護する回路、素電池１の温度が
異常に高くなるときに充電を停止して、素電池１を保護
する回路である。さらに、保護基板３は、パック電池の
出力端子９も固定している。出力端子９は、金属板を半
田付けしてプリント基板に固定している。図のパック電
池は、４つの出力端子９を保護基板３に固定している。
これ等の出力端子９は、正負の電源端子と、通信端子
と、温度端子からなる。The protective substrate 3 is a printed circuit board on which an electronic component 8 for implementing a protective circuit for the unit cell 1 is mounted. The protection circuit is a circuit that prevents overcharging and overdischarging of the unit cell 1, a circuit that protects the unit cell 1 from an excessive current, and stops charging when the temperature of the unit cell 1 becomes abnormally high. This is a circuit for protecting 1. Furthermore, the protective substrate 3 also fixes the output terminal 9 of the battery pack. The output terminal 9 is fixed to the printed board by soldering a metal plate. The battery pack shown in the figure has four output terminals 9 fixed to the protective substrate 3.
These output terminals 9 are composed of positive and negative power supply terminals, communication terminals, and temperature terminals.
【００１４】ホルダー４は、保護基板３と素電池１との
間に配設されて、保護基板３を素電池１から絶縁すると
共に、保護基板３を決められた位置に配設する。ホルダ
ー４は、全体をプラスチックで一体的に成形している。
図のホルダー４は、上面にプリント基板に固定している
ＩＣ等の電子部品８を配設する上スペース１０を有し、
下面には素電池１の凸部電極１ａを配設する下スペース
１１を設けている。上スペース１０と下スペース１１の
間に絶縁プレート４Ａを設けて、電子部品８と凸部電極
１ａを絶縁している。図のパック電池は、ホルダー４で
保護基板３を素電池１の凸部電極面１Ｂと平行に配設し
ている。素電池１の凸部電極面１Ｂは、外装缶の開口部
を封口板で閉塞している面である。The holder 4 is disposed between the protective substrate 3 and the unit cell 1 to insulate the protective substrate 3 from the unit cell 1 and to dispose the protective substrate 3 at a predetermined position. The holder 4 is integrally molded of plastic as a whole.
The holder 4 shown in the drawing has an upper space 10 on the upper surface for disposing an electronic component 8 such as an IC fixed to a printed circuit board,
On the lower surface, a lower space 11 for arranging the convex electrode 1a of the unit cell 1 is provided. An insulating plate 4A is provided between the upper space 10 and the lower space 11 to insulate the electronic component 8 from the convex electrode 1a. In the battery pack shown in the figure, the protective substrate 3 is arranged by the holder 4 in parallel with the convex electrode surface 1B of the unit cell 1. The convex electrode surface 1B of the unit cell 1 is a surface that closes the opening of the outer can with a sealing plate.
【００１５】端子カバー２も、ホルダー４と同じように
全体をプラスチックで一体的に成形している。端子カバ
ー２は、先端面２Ａの周囲に周壁２Ｂを設けた形状とし
ている。端子カバー２は、周壁２Ｂの下端の開口端面
を、素電池１の端面である凸部電極面１Ｂに装着される
装着面２Ｄとしている。端子カバー２は、周壁２Ｂの装
着面２Ｄの外形を素電池１の凸部電極面１Ｂの外形と同
寸法として、周壁２Ｂの外周面２Ｃを素電池１の外周面
と同一面としている。図のパック電池は、素電池１を薄
型電池とするので、周壁２Ｂの装着面２Ｄの外形もこの
薄型電池の端面の外形と同じにしている。端子カバー２
と素電池１の連結部における外形を同寸法とするのは、
端子カバー２と素電池１の外面を段差ができないように
同一面として連結するためである。ただ、端子カバー
は、必ずしも外周面を素電池の外周面と同一面とする必
要はなく、装着面の外形を素電池の端面の外形よりやや
大きく、あるいは小さくすることもできる。The terminal cover 2, like the holder 4, is integrally molded of plastic. The terminal cover 2 has a shape in which a peripheral wall 2B is provided around the tip surface 2A. The terminal cover 2 has an opening end surface at the lower end of the peripheral wall 2B as a mounting surface 2D that is mounted on the convex electrode surface 1B that is the end surface of the unit cell 1. In the terminal cover 2, the outer surface of the mounting surface 2D of the peripheral wall 2B has the same size as the outer shape of the convex electrode surface 1B of the unit cell 1, and the outer peripheral surface 2C of the peripheral wall 2B is flush with the outer peripheral surface of the unit cell 1. Since the unit battery 1 is a thin battery in the battery pack shown in the figure, the outer shape of the mounting surface 2D of the peripheral wall 2B is the same as the outer shape of the end surface of the thin battery. Terminal cover 2
The outer dimensions of the connecting portion of the unit cell 1 and the unit cell 1 have the same size,
This is because the terminal cover 2 and the outer surface of the unit cell 1 are connected as the same surface so that there is no step. However, the outer peripheral surface of the terminal cover does not necessarily have to be flush with the outer peripheral surface of the unit cell, and the outer shape of the mounting surface can be made slightly larger or smaller than the outer shape of the end surface of the unit cell.
【００１６】先端面２Ａの周囲に周壁２Ｂを設けた端子
カバー２は、周壁２Ｂの幅が端子カバー２の高さ（ｈ）
となる。したがって、この端子カバー２は、周壁２Ｂを
所定の幅にして、端子カバー２を所定の高さ（ｈ）とし
ている。端子カバー２は、周壁２Ｂの内部の収納室１２
にホルダー４と保護基板３を収納する。いいかえると、
端子カバー２の高さ（ｈ）は、周壁２Ｂの内側にホルダ
ー４と保護基板３の収納室１２を設けることができる高
さに設計される。周壁２Ｂは、下端の開口端面である装
着面２Ｄを素電池１の凸部電極面１Ｂに接触させて、端
子カバー２の先端面２Ａを、素電池１の凸部電極面１Ｂ
と平行に配設する。先端面２Ａは、収納室１２に内蔵す
る保護基板３に固定している出力端子９を表出させる位
置に電極窓６を開口している。In the terminal cover 2 in which the peripheral wall 2B is provided around the tip surface 2A, the width of the peripheral wall 2B is the height (h) of the terminal cover 2.
Becomes Therefore, in the terminal cover 2, the peripheral wall 2B has a predetermined width and the terminal cover 2 has a predetermined height (h). The terminal cover 2 has a storage chamber 12 inside the peripheral wall 2B.
The holder 4 and the protective substrate 3 are stored in. In other words,
The height (h) of the terminal cover 2 is designed so that the holder 4 and the storage chamber 12 for the protective substrate 3 can be provided inside the peripheral wall 2B. The peripheral wall 2B brings the mounting surface 2D, which is the opening end surface at the lower end, into contact with the convex electrode surface 1B of the unit cell 1 so that the front end surface 2A of the terminal cover 2 is connected to the convex electrode surface 1B of the unit cell 1.
Arranged in parallel with. The front end surface 2A has an electrode window 6 opened at a position where the output terminal 9 fixed to the protective substrate 3 contained in the storage chamber 12 is exposed.
【００１７】さらに、端子カバー２は、先端面２Ａと装
着面２Ｄの間の外周面２Ｃに段差部１３を設けている。
段差部１３は、先端面２Ａの外形を素電池１の端面の外
形よりも小さくするようにして設けられる。すなわち、
端子カバー２は、その中央部分に凸部を設けてその外周
に段差部１３を設けている。段差部１３には、端子カバ
ー２の先端面２Ａと平行な段差水平面１３Ａと段差垂直
面１３Ｂが互いに直交する状態で設けられる。ただ、段
差水平面と段差垂直面は、必ずしも直交する姿勢とする
必要はなく、段差水平面と段差垂直面がなす角度が９０
度を越える角度となるようにすることもできる。Further, the terminal cover 2 is provided with a step portion 13 on the outer peripheral surface 2C between the tip surface 2A and the mounting surface 2D.
The step portion 13 is provided such that the outer shape of the front end surface 2A is smaller than the outer shape of the end surface of the unit cell 1. That is,
The terminal cover 2 is provided with a convex portion at its central portion and a step portion 13 on its outer periphery. The step portion 13 is provided with a step horizontal surface 13A parallel to the tip surface 2A of the terminal cover 2 and a step vertical surface 13B orthogonal to each other. However, the step horizontal surface and the step vertical surface do not necessarily need to be in the postures orthogonal to each other, and the angle formed by the step horizontal surface and the step vertical surface is 90 degrees.
It is also possible to set the angle to exceed degrees.
【００１８】熱収縮チューブ５は、加熱すると収縮して
素電池１と端子カバー２の表面に密着する可撓性のチュ
ーブである。熱収縮チューブ５は、素電池１と端子カバ
ー２を挿入した後加熱し、収縮させて素電池１と端子カ
バー２の表面に密着させる。この熱収縮チューブ５は、
図６に示すように、その先端部を段差部１３まで延長し
て、段差部１３で先端開口縁を細く収縮させている。こ
の熱収縮チューブ５は、細く収縮した先端部で段差部１
３を係止する状態となって、端子カバー２を外れないよ
うに素電池１により確実に連結する。The heat-shrinkable tube 5 is a flexible tube that shrinks when heated and comes into close contact with the surfaces of the unit cell 1 and the terminal cover 2. After inserting the unit cell 1 and the terminal cover 2, the heat-shrinkable tube 5 is heated and contracted to be brought into close contact with the surfaces of the unit cell 1 and the terminal cover 2. This heat shrink tube 5
As shown in FIG. 6, the tip end portion is extended to the step portion 13, and the tip end opening edge is narrowly contracted by the step portion 13. The heat-shrinkable tube 5 has a thinly shrunk tip portion and a step portion 1
When the terminal cover 2 is locked, the terminal cover 2 is securely connected to the unit cell 1 so as not to come off.
【００１９】段差部１３まで延長された熱収縮チューブ
５は、図に示すように段差水平面１３Ａに密着されて、
端子カバー２を素電池１に連結する。熱収縮チューブ
は、段差部の段差水平面から段差垂直面まで延長するこ
ともできる。段差部１３は、段差水平面１３Ａの幅を広
くして、熱収縮チューブ５が端子カバー２を素電池１に
連結する強度を強くできる。段差水平面１３Ａに密着す
る熱収縮チューブ５がしっかりと端子カバー２を保持す
るからである。ただ、段差水平面の幅を広くすると保護
基板等を内蔵する内部の容積が小さくなると共に、出力
端子も小さくする必要がある。したがって、段差水平面
１３Ａの幅は、端子カバー２と素電池１の連結強度と、
内部の収納容積を考慮して最適値とする。段差垂直面１
３Ｂは、これを高くすると熱収縮チューブ５の先端縁が
端子カバー２の先端面２Ａまで延長されて電極窓６を塞
ぐのを確実に防止できる。ただ、段差垂直面１３Ｂを高
くするとパック電池の全長が長くなる。したがって、パ
ック電池をできるかぎり小さくしながら、熱収縮チュー
ブ５が端子カバー２の先端面２Ａを被覆しない高さとす
る。The heat-shrinkable tube 5 extended to the step portion 13 is brought into close contact with the step horizontal surface 13A as shown in the figure,
The terminal cover 2 is connected to the unit cell 1. The heat-shrinkable tube can also extend from the step horizontal surface of the step portion to the step vertical surface. The stepped portion 13 can increase the width of the stepped horizontal surface 13A to increase the strength with which the heat shrink tube 5 connects the terminal cover 2 to the unit cell 1. This is because the heat-shrinkable tube 5 that is in close contact with the stepped horizontal surface 13A firmly holds the terminal cover 2. However, if the width of the step horizontal surface is widened, the internal volume in which the protective substrate and the like are built-in becomes smaller and the output terminal also needs to be made smaller. Therefore, the width of the step horizontal surface 13A is determined by the connection strength between the terminal cover 2 and the unit cell 1,
The optimum value is set in consideration of the internal storage volume. Step vertical surface 1
3B can surely prevent the tip edge of the heat-shrinkable tube 5 from extending to the tip surface 2A of the terminal cover 2 and closing the electrode window 6 when the height is increased. However, if the step vertical surface 13B is raised, the total length of the battery pack becomes longer. Therefore, the size of the battery pack is made as small as possible, and the height is set such that the heat-shrinkable tube 5 does not cover the tip surface 2A of the terminal cover 2.
【００２０】熱収縮チューブ５の後端部は、図６に示す
ように、素電池１の底面に沿って収縮する。熱収縮チュ
ーブ５は、素電池１の底面全体を被覆するのが難しい。
このため、素電池１の底面は絶縁シート１４で被覆され
る。絶縁シート１４は、素電池１の底面の形状に切断さ
れて、素電池１の底面の全体を被覆する。この絶縁シー
ト１４は、接着シール１５で素電池１に接着される。接
着シール１５は、両端部を薄型電池の両面に接着して、
絶縁シート１４を素電池１の底面に固定する。熱収縮チ
ューブ５は、図６の断面図に示すように、素電池１の底
面に沿って収縮する。この形状に収縮する熱収縮チュー
ブ５も、絶縁シート１４を素電池１の底面に固定する。
したがって、接着シール１５を使用しないで、絶縁シー
ト１４を素電池１の底面に固定することもできる。ま
た、絶縁シート１４は接着して素電池１の底面に固定す
ることもできる。The rear end of the heat shrinkable tube 5 shrinks along the bottom surface of the unit cell 1, as shown in FIG. It is difficult for the heat-shrinkable tube 5 to cover the entire bottom surface of the unit cell 1.
Therefore, the bottom surface of the unit cell 1 is covered with the insulating sheet 14. The insulating sheet 14 is cut into the shape of the bottom surface of the unit cell 1 and covers the entire bottom surface of the unit cell 1. The insulating sheet 14 is bonded to the unit cell 1 with an adhesive seal 15. The adhesive seal 15 adheres both ends to both sides of the thin battery,
The insulating sheet 14 is fixed to the bottom surface of the unit cell 1. The heat-shrinkable tube 5 shrinks along the bottom surface of the unit cell 1 as shown in the cross-sectional view of FIG. 6. The heat-shrinkable tube 5 that shrinks to this shape also fixes the insulating sheet 14 to the bottom surface of the unit cell 1.
Therefore, the insulating sheet 14 can be fixed to the bottom surface of the unit cell 1 without using the adhesive seal 15. Further, the insulating sheet 14 may be adhered and fixed to the bottom surface of the unit cell 1.
【００２１】図８と図９に示すパック電池は、端子カバ
ー２と素電池１を連結シート１６で連結する。連結シー
ト１６は、同一面である端子カバー２と素電池１の表面
に接着されて、端子カバー２と素電池１を連結する。す
なわち、１枚の連結シート１６が、端子カバー２と素電
池１の両方に接着されて端子カバー２と素電池１を連結
する。このように、端子カバー２の外周面２Ｃと素電池
１の外周面を同一面とするパック電池は、端子カバー２
と素電池１の表面に、連結シート１６をより密着でき
る。ただ、端子カバーと素電池は、連結シートで接着で
きる程度であれば、外周面を同一面とすることなく、多
少は段差のある状態とすることもできる。In the battery pack shown in FIGS. 8 and 9, the terminal cover 2 and the unit cell 1 are connected by the connecting sheet 16. The connection sheet 16 is adhered to the surfaces of the terminal cover 2 and the unit cell 1 that are on the same surface to connect the terminal cover 2 and the unit cell 1. That is, one connecting sheet 16 is bonded to both the terminal cover 2 and the unit cell 1 to connect the terminal cover 2 and the unit cell 1. In this way, the battery pack in which the outer peripheral surface 2C of the terminal cover 2 and the outer peripheral surface of the unit cell 1 are flush with each other is the terminal cover 2
The connecting sheet 16 can be more closely attached to the surface of the unit cell 1. However, as long as the terminal cover and the unit cell can be adhered to each other by the connecting sheet, the outer peripheral surfaces may be made to have a slight level difference without forming the same surface.
【００２２】図８のパック電池は、２枚の連結シート１
６を、素電池１の両面に接着している。各々の連結シー
ト１６は、素電池１と端子カバー２に接着されて素電池
１と端子カバー２を連結する。連結シート１６は、板ま
たはシートで、シート状のものには特定しない。板状の
連結シートは、金属板や硬質ないし軟質のプラスチック
板である。シート状の連結シートは、プラスチックシー
ト、織布、不織布、紙等である。The battery pack of FIG. 8 has two connecting sheets 1.
6 are adhered to both sides of the unit cell 1. Each connecting sheet 16 is bonded to the unit cell 1 and the terminal cover 2 to connect the unit cell 1 and the terminal cover 2. The connecting sheet 16 is a plate or a sheet, and is not limited to a sheet-like one. The plate-shaped connecting sheet is a metal plate or a hard or soft plastic plate. The sheet-shaped connecting sheet is a plastic sheet, woven cloth, non-woven cloth, paper, or the like.
【００２３】図９のパック電池は、１枚の連結シート１
６を素電池１の両面まで延長して接着している。この連
結シート１６は、中間に端子カバー２の凸部を入れる貫
通孔１６Ａを開口している。この貫通孔１６Ａに端子カ
バー２の凸部を入れて、全体をコ字状に折曲する状態
で、両端部を素電池１の両面に接着する。この連結シー
ト１６は、１枚でしっかりと端子カバー２を素電池１に
連結できる。連結シート１６は、接着剤や粘着層を介し
て端子カバー２と素電池１に接着される。The battery pack of FIG. 9 has one connecting sheet 1
6 is extended to both sides of the unit cell 1 and bonded. The connecting sheet 16 has a through hole 16A formed in the middle for inserting the convex portion of the terminal cover 2. The convex portion of the terminal cover 2 is put in the through hole 16A, and both ends are bonded to both sides of the unit cell 1 in a state in which the whole is bent in a U shape. This connecting sheet 16 can firmly connect the terminal cover 2 to the unit cell 1 with one sheet. The connecting sheet 16 is bonded to the terminal cover 2 and the unit cell 1 via an adhesive or an adhesive layer.
【００２４】図８と図９のパック電池は、連結シート１
６が端子カバー２と素電池１を連結する状態で、端子カ
バー２と素電池１の表面を熱収縮チューブ５で被覆す
る。すなわち、連結シート１６で連結している端子カバ
ー２と素電池１を熱収縮チューブ５に入れ、熱収縮チュ
ーブ５を加熱、収縮させて、端子カバー２と素電池１の
表面に密着させる。熱収縮チューブ５は、端子カバー２
の段差部１３まで延長されて、段差部１３を素電池１に
さらにしっかりと連結する。ただ、連結シートが端子カ
バーを素電池に連結しているパック電池は、必ずしも端
子カバーに段差部を設ける必要はない。端子カバーを連
結シートで素電池に連結しているからである。したがっ
て、このパック電池は、熱収縮チューブを素電池のみの
表面に密着することもできる。ただ、好ましくは、熱収
縮チューブは、素電池と端子カバーの同一面に密着され
る。The battery pack shown in FIGS. 8 and 9 has a connecting sheet 1.
The surface of the terminal cover 2 and the unit cell 1 is covered with the heat-shrinkable tube 5 in a state where 6 connects the terminal cover 2 and the unit cell 1. That is, the terminal cover 2 and the unit cell 1 connected by the connecting sheet 16 are put into the heat-shrinkable tube 5, and the heat-shrinkable tube 5 is heated and shrunk so that the terminal cover 2 and the surface of the unit cell 1 are brought into close contact with each other. The heat-shrinkable tube 5 is used for the terminal cover 2
The step portion 13 is extended to the step portion 13 to further firmly connect the step portion 13 to the unit cell 1. However, in the battery pack in which the connecting sheet connects the terminal cover to the unit cell, it is not always necessary to provide the stepped portion on the terminal cover. This is because the terminal cover is connected to the unit cell with the connecting sheet. Therefore, in this battery pack, the heat-shrinkable tube can be adhered to the surface of only the unit cell. However, preferably, the heat-shrinkable tube is closely attached to the same surface of the unit cell and the terminal cover.
【００２５】[0025]
【発明の効果】本発明のパック電池は、小さくして軽く
でき、しかも安価に多量生産できる特長がある。それ
は、本発明のパック電池が、先端面に電極窓を開口して
いる端子カバーを素電池の端面に配設すると共に、この
素電池と端子カバーとを熱収縮チューブで被覆している
からである。この構造のパック電池は、従来のように、
金属ケースやプラスチックケースで外装することなく、
素電池と端子カバーを熱収縮チューブで被覆するので、
外形を小さくして軽くでき、しかも材料コストと製造コ
ストを両方を低減できる理想的な特長が実現できる。The battery pack of the present invention has the features that it can be made small and light, and can be mass-produced at low cost. This is because the battery pack of the present invention has a terminal cover having an electrode window opened at the tip end surface provided on the end surface of the unit cell, and the unit cell and the terminal cover are covered with a heat-shrinkable tube. is there. The battery pack with this structure is
Without using a metal case or plastic case
Since the unit cell and the terminal cover are covered with a heat-shrinkable tube,
It is possible to realize the ideal feature that the size and size can be reduced and the cost can be reduced and both material cost and manufacturing cost can be reduced.
【００２６】とくに、本発明の請求項１のパック電池
は、端子カバーの外周面に段差部を設けており、熱収縮
チューブの端部を段差部の位置で収縮しているので、熱
収縮チューブで端子カバーを素電池に強く連結できる特
長がある。Particularly, in the battery pack according to claim 1 of the present invention, the step portion is provided on the outer peripheral surface of the terminal cover, and the end portion of the heat shrink tube is shrunk at the position of the step portion. Has the feature that the terminal cover can be strongly connected to the unit cell.
【００２７】さらに、本発明の請求項３のパック電池
は、互いに同一面である端子カバーと素電池の表面に連
結シートを接着しており、この連結シートで連結した端
子カバーと素電池の外側に熱収縮チューブを密着させて
いるので、端子カバーが素電池に対して横ずれするのを
阻止して、より確実に連結できる特長がある。さらに、
端子カバーと素電池とを連結シートで正確に位置決めし
ながら連結できるので、能率よく製造できる特長もあ
る。Further, in the battery pack of claim 3 of the present invention, a connecting sheet is adhered to the surfaces of the terminal cover and the unit cell which are on the same plane, and the terminal cover and the outside of the unit cell connected by the connecting sheet. Since the heat-shrink tube is closely attached to the terminal cover, it has the feature that it can prevent the terminal cover from slipping sideways with respect to the unit cell and can be connected more reliably. further,
Since the terminal cover and the unit cell can be connected while accurately positioning them with the connecting sheet, there is also a feature that manufacturing can be performed efficiently.
【図１】従来のパック電池の斜視図FIG. 1 is a perspective view of a conventional battery pack.
【図２】本発明の一実施例にかかるパック電池の斜視図FIG. 2 is a perspective view of a battery pack according to an embodiment of the present invention.
【図３】図２に示すパック電池の分解斜視図3 is an exploded perspective view of the battery pack shown in FIG.
【図４】図２に示すパック電池の端子カバーと素電池の
分解底面図FIG. 4 is an exploded bottom view of the terminal cover and the unit cell of the battery pack shown in FIG.
【図５】図４に示すパック電池の端子カバーと素電池の
連結状態を示す断面図5 is a cross-sectional view showing a connected state of the terminal cover and the unit cell of the battery pack shown in FIG.
【図６】図２に示すパック電池の拡大断面図6 is an enlarged cross-sectional view of the battery pack shown in FIG.
【図７】本発明の他の実施例にかかるパック電池に内蔵
される素電池の斜視図FIG. 7 is a perspective view of a unit cell incorporated in a battery pack according to another embodiment of the present invention.
【図８】本発明の他の実施例にかかるパック電池の分解
斜視図FIG. 8 is an exploded perspective view of a battery pack according to another embodiment of the present invention.
【図９】本発明の他の実施例にかかるパック電池の分解
斜視図FIG. 9 is an exploded perspective view of a battery pack according to another embodiment of the present invention.
１…素電池 １Ａ…電極 １
ａ…凸部電極
１Ｂ…凸部電極面
２…端子カバー ２Ａ…先端面 ２
Ｂ…周壁
２Ｃ…外周面 ２Ｄ…装着面
３…保護基板
４…ホルダー ４Ａ…絶縁プレート
５…熱収縮チューブ
６…電極窓
７…リード板
８…電子部品
９…出力端子
１０…上スペース
１１…下スペース
１２…収納室
１３…段差部 １３Ａ…段差水平面 １
３Ｂ…段差垂直面
１４…絶縁シート
１５…接着シール
１６…連結シート １６Ａ…貫通孔
１７…外装ケース １７Ａ…折曲片
１８…回路基板1 ... Cell 1A ... Electrode 1
a ... convex electrode 1B ... convex electrode surface 2 ... terminal cover 2A ... tip surface 2
B ... Peripheral wall 2C ... External surface 2D ... Mounting surface 3 ... Protective substrate 4 ... Holder 4A ... Insulation plate 5 ... Heat shrink tube 6 ... Electrode window 7 ... Lead plate 8 ... Electronic component 9 ... Output terminal 10 ... Upper space 11 ... Space 12 ... Storage room 13 ... Step portion 13A ... Step horizontal surface 1
3B ... Step vertical surface 14 ... Insulation sheet 15 ... Adhesive seal 16 ... Connection sheet 16A ... Through hole 17 ... Exterior case 17A ... Bending piece 18 ... Circuit board
Claims (8)
続された出力端子(9)と、この出力端子(9)を露出させる
電極窓(6)を開口している端子カバー(2)と、素電池(1)
と端子カバー(2)とを被覆している熱収縮チューブ(5)と
を備え、 端子カバー(2)は、素電池(1)の端面に装着される装着面
(2D)と、装着面(2D)と反対側で前記電極窓(6)を開口し
た先端面(2A)と、装着面(2D)と先端面(2A)との間の外周
面(2C)に形成された段差部(13)とを有しており、熱収縮
チューブ(5)の端部が、段差部(13)の位置で収縮して、
素電池(1)と端子カバー(2)とを連結していることを特徴
とするパック電池。1. A unit cell (1), an output terminal (9) connected to an electrode of the unit cell (1), and an electrode window (6) exposing the output terminal (9) are opened. Terminal cover (2) and unit cell (1)
And a heat-shrinkable tube (5) covering the terminal cover (2), and the terminal cover (2) is a mounting surface to be mounted on the end surface of the unit cell (1).
(2D), the tip surface (2A) that opens the electrode window (6) on the side opposite to the mounting surface (2D), and the outer peripheral surface (2C) between the mounting surface (2D) and the tip surface (2A). It has a step portion (13) formed in, the end of the heat shrink tube (5) shrinks at the position of the step portion (13),
A battery pack comprising a unit cell (1) and a terminal cover (2) connected to each other.
の外周面と同一面としている請求項１に記載されるパッ
ク電池。2. The unit cell (1) is attached to the outer peripheral surface (2C) of the terminal cover (2).
The battery pack according to claim 1, which is flush with the outer peripheral surface of the battery.
続された出力端子(9)と、この出力端子(9)を露出させる
電極窓(6)を開口している端子カバー(2)と、素電池(1)
と端子カバー(2)とを被覆している熱収縮チューブ(5)と
を備え、 端子カバー(2)は、外周面(2C)を素電池(1)の外周面と同
一面としており、互いに同一面である端子カバー(2)と
素電池(1)の表面に連結シート(16)を接着して、この連
結シート(16)で端子カバー(2)と素電池(1)とを連結して
おり、この連結シート(16)の外側に熱収縮チューブ(5)
を密着させてなるパック電池。3. A unit cell (1), an output terminal (9) connected to an electrode of the unit cell (1), and an electrode window (6) exposing the output terminal (9) are opened. Terminal cover (2) and unit cell (1)
And a heat-shrinkable tube (5) covering the terminal cover (2), the terminal cover (2) has an outer peripheral surface (2C) flush with the outer peripheral surface of the unit cell (1), and Bond the connection sheet (16) on the same surface of the terminal cover (2) and the surface of the unit cell (1), and connect the terminal cover (2) and the unit cell (1) with this connection sheet (16). The heat-shrinkable tube (5) on the outside of this connecting sheet (16).
A battery pack that is made to adhere to each other.
基板(3)を配設しており、この保護基板(3)に出力端子
(9)を配設してなる請求項１ないし３のいずれかに記載
されるパック電池。4. A protective substrate (3) is arranged between the terminal cover (2) and the unit cell (1), and the protective substrate (3) has an output terminal.
The battery pack according to any one of claims 1 to 3, wherein (9) is provided.
ー(4)を配設している請求項４に記載されるパック電
池。5. The battery pack according to claim 4, wherein a holder (4) is arranged between the protective substrate (3) and the unit cell (1).
ルダー(4)を内蔵している請求項５に記載されるパック
電池。6. The battery pack according to claim 5, wherein a protective substrate (3) and a holder (4) are built inside the terminal cover (2).
有し、正負の電極(1A)をリード板(7)で出力端子(9)に電
気接続している請求項１ないし３のいずれかに記載され
るパック電池。7. The unit cell (1) has positive and negative electrodes (1A) on the sealing side, and the positive and negative electrodes (1A) are electrically connected to an output terminal (9) by a lead plate (7). The battery pack according to any one of 1 to 3.
池で、薄型電池の両面に端子カバー(2)まで延長して連
結シート(16)を接着している請求項３に記載されるパッ
ク電池。8. The thin battery according to claim 3, wherein the unit cell (1) is a flat battery having both surfaces flat, and the connecting sheet (16) is adhered to both surfaces of the thin battery to extend to the terminal cover (2). Packed battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001198695A JP2003017020A (en) | 2001-06-29 | 2001-06-29 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001198695A JP2003017020A (en) | 2001-06-29 | 2001-06-29 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003017020A true JP2003017020A (en) | 2003-01-17 |
Family
ID=19036101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001198695A Pending JP2003017020A (en) | 2001-06-29 | 2001-06-29 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003017020A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006164601A (en) * | 2004-12-03 | 2006-06-22 | Sanyo Electric Co Ltd | Battery pack |
| JP2006164579A (en) * | 2004-12-03 | 2006-06-22 | Sanyo Electric Co Ltd | Battery pack |
| EP1716608A1 (en) * | 2004-02-18 | 2006-11-02 | LG Chem Ltd. | Unification type cap assembly containing protection circuit board and secondary battery comprising the same |
| WO2009051388A2 (en) * | 2007-10-18 | 2009-04-23 | Lg Chem, Ltd. | Secondary battery pack having excellent energy density and pcm assembly therefor |
| JP2011040374A (en) * | 2009-08-11 | 2011-02-24 | Samsung Sdi Co Ltd | Battery pack and method of manufacturing the same |
| JP2011108663A (en) * | 2003-10-17 | 2011-06-02 | Sony Corp | Battery pack using outer packaging film and manufacturing method of battery pack |
| CN113383457A (en) * | 2020-03-31 | 2021-09-10 | 东莞新能安科技有限公司 | Battery structure |
-
2001
- 2001-06-29 JP JP2001198695A patent/JP2003017020A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011108663A (en) * | 2003-10-17 | 2011-06-02 | Sony Corp | Battery pack using outer packaging film and manufacturing method of battery pack |
| EP1716608A1 (en) * | 2004-02-18 | 2006-11-02 | LG Chem Ltd. | Unification type cap assembly containing protection circuit board and secondary battery comprising the same |
| EP1716608A4 (en) * | 2004-02-18 | 2013-04-03 | Lg Chemical Ltd | Unification type cap assembly containing protection circuit board and secondary battery comprising the same |
| JP2006164579A (en) * | 2004-12-03 | 2006-06-22 | Sanyo Electric Co Ltd | Battery pack |
| JP2006164601A (en) * | 2004-12-03 | 2006-06-22 | Sanyo Electric Co Ltd | Battery pack |
| JP4716719B2 (en) * | 2004-12-03 | 2011-07-06 | 三洋電機株式会社 | Battery pack |
| WO2009051388A2 (en) * | 2007-10-18 | 2009-04-23 | Lg Chem, Ltd. | Secondary battery pack having excellent energy density and pcm assembly therefor |
| WO2009051388A3 (en) * | 2007-10-18 | 2009-07-02 | Lg Chemical Ltd | Secondary battery pack having excellent energy density and pcm assembly therefor |
| US9123951B2 (en) | 2007-10-18 | 2015-09-01 | Lg Chem, Ltd. | Secondary battery pack having excellent energy density and PCM assembly therefor |
| JP2011040374A (en) * | 2009-08-11 | 2011-02-24 | Samsung Sdi Co Ltd | Battery pack and method of manufacturing the same |
| CN113383457A (en) * | 2020-03-31 | 2021-09-10 | 东莞新能安科技有限公司 | Battery structure |
| WO2021196033A1 (en) * | 2020-03-31 | 2021-10-07 | 东莞新能安科技有限公司 | Battery structure |
| CN113383457B (en) * | 2020-03-31 | 2022-07-15 | 东莞新能安科技有限公司 | Battery structure |
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