JP2003323876A - Battery pack - Google Patents
Battery packInfo
- Publication number
- JP2003323876A JP2003323876A JP2002129356A JP2002129356A JP2003323876A JP 2003323876 A JP2003323876 A JP 2003323876A JP 2002129356 A JP2002129356 A JP 2002129356A JP 2002129356 A JP2002129356 A JP 2002129356A JP 2003323876 A JP2003323876 A JP 2003323876A
- Authority
- JP
- Japan
- Prior art keywords
- battery
- case
- thin
- battery pack
- thin 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.)
- Granted
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
Landscapes
- Battery Mounting, Suspending (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ケースに薄型電池
を固定している電池パックに関する。TECHNICAL FIELD The present invention relates to a battery pack in which a thin battery is fixed to a case.
【０００２】[0002]
【従来の技術】薄型電池の電池パックは、種々の携帯用
の電気機器に装着されて便利に使用される。とくに、携
帯電話のように、全体を薄く設計する必要がある電気機
器に最適な形状である。この形状の電池パックは、薄型
電池を薄くしないかぎり、全体を薄くできないので、い
かにして薄型電池を薄くできるかの研究がなされてい
る。現在、極めて薄い薄型電池としてポリマー電池が開
発されている。ポリマー電池は、アルミのラミネートフ
ィルムを外装に使用するので全体を極めて薄くできる。
さらに、外装缶に鉄やアルミニウムを使用するリチウム
イオン二次電池の薄型電池も開発されている。2. Description of the Related Art A thin battery pack is conveniently mounted on various portable electric devices. In particular, the shape is optimal for electric devices such as mobile phones that need to be designed thin overall. A battery pack of this shape cannot be thinned unless the thin battery is thinned. Therefore, research has been conducted on how to make the thin battery thin. Currently, polymer batteries are being developed as extremely thin and thin batteries. Since the polymer battery uses an aluminum laminate film for the exterior, it can be made extremely thin as a whole.
Furthermore, a thin lithium-ion secondary battery using iron or aluminum for the outer can has been developed.
【０００３】[0003]
【発明が解決しようとする課題】現在開発されているポ
リマー電池やリチウムイオン二次電池等の薄型電池は、
すでに相当に薄く設計されている。さらに、これらの薄
型電池は、充電容量を減少させることなく、より薄くす
るための研究も行われている。また、薄型電池を内蔵す
るパック電池においても、全体を薄くするための設計が
行われている。とくに、携帯用の電気機器のように、よ
り薄くすることが要求される機器に装着される電池パッ
クは、さらに薄く設計することが要求されている。この
ため、薄型電池の充電容量を減少させることなく、電池
パックを薄く設計することは極めて重要であり、このこ
とを実現できる電池パックが求められている。The thin batteries such as polymer batteries and lithium ion secondary batteries currently being developed are
It's already designed quite thin. Furthermore, research has been conducted to make these thin batteries thinner without reducing the charging capacity. Further, even in a battery pack containing a thin battery, a design for thinning the entire battery is performed. In particular, a battery pack to be attached to a device that needs to be thinner, such as a portable electric device, is required to have a thinner design. Therefore, it is extremely important to design a thin battery pack without reducing the charge capacity of the thin battery, and a battery pack that can realize this is required.
【０００４】本発明は、極めて簡単な構造で、薄型電池
自体を薄くすることなく、電池パックを薄くすることを
目的に開発されたもので、本発明の重要な目的は、薄型
電池の厚さを変えることなく電池パック全体の厚さを極
限まで薄くできる電池パックを提供することにある。The present invention has an extremely simple structure and was developed for the purpose of thinning a battery pack without thinning the thin battery itself. An important object of the present invention is to reduce the thickness of the thin battery. An object of the present invention is to provide a battery pack that can make the overall thickness of the battery pack as thin as possible without changing the thickness.
【０００５】[0005]
【課題を解決するための手段】本発明の電池パックは、
外装ケース１に、電池の厚さが電池の幅よりも薄い薄型
電池２を装着している。外装ケース１は、薄型電池２の
表裏面を外部に表出させる開口部３を設けて、薄型電池
２の両側面と両端面とをカバーする方形枠形に成形して
いる。外装ケース１の厚さは薄型電池２の厚さにほぼ等
しく、あるいは外装ケース１を薄型電池２よりも薄くし
ている。The battery pack of the present invention comprises:
In the outer case 1, a thin battery 2 having a battery thickness smaller than the width of the battery is mounted. The outer case 1 has an opening 3 that exposes the front and back surfaces of the thin battery 2 to the outside, and is formed in a rectangular frame shape that covers both side surfaces and both end surfaces of the thin battery 2. The thickness of the outer case 1 is substantially equal to the thickness of the thin battery 2, or the outer case 1 is thinner than the thin battery 2.
【０００６】外装ケース１は、薄型電池２の両側面をカ
バーする側面ケース部１ａと、薄型電池２の両端面をカ
バーする端部ケース部１ｂとを備える構造とすることが
できる。側面ケース部１ａには、内面に保持溝４を設け
て、この保持溝４に、薄型電池２両側面の中央突出部を
入れて固定できる。また、外装ケース１の端部ケース部
１ｂには、出力端子８の端子ホルダ５を配設することが
できる。The outer case 1 may have a structure including side case portions 1a that cover both side surfaces of the thin battery 2 and end case portions 1b that cover both end surfaces of the thin battery 2. A holding groove 4 is provided on the inner surface of the side case portion 1a, and the central protruding portions on both side surfaces of the thin battery 2 can be inserted and fixed in the holding groove 4. Further, the terminal holder 5 of the output terminal 8 can be arranged in the end case portion 1b of the outer case 1.
【０００７】さらに、外装ケース１は、薄型電池２の表
裏面に分割されてなる第１ケース１Ａ及び第２ケース１
Ｂとで構成できる。この外装ケース１は、第１ケース１
Ａと第２ケース１Ｂに、側面ケース部１ａと端部ケース
部１ｂとを備える構造とし、第１ケース１Ａと第２ケー
ス１Ｂの側面ケース部１ａと端部ケース部１ｂとを連結
して薄型電池２を保持することができる。第１ケース１
Ａと第２ケース１Ｂは、溶着して連結できる。さらに、
薄型電池２は、表面を絶縁材６で被覆することができ
る。さらにまた、薄型電池２と外装ケース１に絶縁シー
ト７を接着して、薄型電池２を被覆することもできる。
絶縁シート７が接着される薄型電池２と外装ケース１の
接着面に凹凸または段差などの非平面部２０がある電池
パックは、この非平面部２０に沿うように成形されてな
る絶縁シート７を薄型電池２と外装ケース１の接着面に
接着することができる。この絶縁シート７は、非平面部
２０に沿って成形された非平面形状を目立たなくする表
面処理をすることができる。Further, the outer case 1 is divided into a front surface and a back surface of the thin battery 2 into a first case 1A and a second case 1.
It can be configured with B. This outer case 1 is the first case 1
A and the second case 1B have a structure in which the side case 1a and the end case 1b are provided, and the side case 1a and the end case 1b of the first case 1A and the second case 1B are connected to each other to reduce the thickness. The battery 2 can be held. First case 1
A and the second case 1B can be connected by welding. further,
The thin battery 2 can have its surface coated with an insulating material 6. Furthermore, the thin battery 2 may be covered by bonding the insulating sheet 7 to the thin battery 2 and the outer case 1.
A battery pack having a non-planar portion 20 such as irregularities or steps on the bonding surface of the thin battery 2 to which the insulating sheet 7 is adhered and the outer case 1 has an insulating sheet 7 formed along the non-planar portion 20. It can be bonded to the bonding surface of the thin battery 2 and the outer case 1. The insulating sheet 7 can be surface-treated so as to make the non-planar shape formed along the non-planar portion 20 inconspicuous.
【０００８】出力端子８を配設している端部ケース部１
ｂには、保護回路を内蔵するための収納室を設けること
ができ、この収納室に保護回路を内蔵して外部から絶縁
することができる。出力端子８を定位置に配置する端子
ホルダ５に保護回路を内蔵することもできる。この端子
ホルダ５は、外装ケース１の端部ケース部１ｂに内蔵で
きる。薄型電池２の凸部電極１０を設けている端面に
は、絶縁リング９を配設し、絶縁リング９に凸部電極１
０を突出させる貫通孔１１を設け、貫通孔１１に凸部電
極１０を入れて薄型電池２の端面を絶縁することができ
る。さらに、薄型電池２は、正負の電極に保護素子１２
を連結でき、また、薄型電池２は、リチウムイオン二次
電池やポリマー電池とすることができる。The end case portion 1 in which the output terminal 8 is arranged
A storage chamber for containing a protection circuit can be provided in b, and the protection circuit can be built in this storage chamber and insulated from the outside. It is possible to incorporate a protection circuit in the terminal holder 5 in which the output terminal 8 is arranged at a fixed position. The terminal holder 5 can be built in the end case portion 1b of the outer case 1. An insulating ring 9 is arranged on the end surface of the thin battery 2 on which the convex electrode 10 is provided, and the convex electrode 1 is attached to the insulating ring 9.
It is possible to provide a through hole 11 for projecting 0, and insert the convex electrode 10 into the through hole 11 to insulate the end surface of the thin battery 2. Further, the thin battery 2 has a protective element 12 on the positive and negative electrodes.
, And the thin battery 2 can be a lithium ion secondary battery or a polymer battery.
【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電池パックを例示するも
のであって、本発明は電池パック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 the following.
【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１に示す電池パックは、外装ケース１
と、この外装ケース１に装着している薄型電池２とを備
える。薄型電池２は、電池の厚さを電池の幅よりも薄く
している二次電池である。薄型電池２は、リチウムイオ
ン二次電池、又はポリマー電池である。ポリマー電池は
リチウムポリマー電池である。ただ、本発明は、薄型電
池をリチウムイオン二次電池やポリマー電池に特定しな
い。薄型電池には、これ等の電池以外の電池、たとえば
ニッケル−水素電池やニッケル−カドミウム電池とする
こともできる。The battery pack shown in FIG. 1 has an outer case 1
And a thin battery 2 mounted on the outer case 1. The thin battery 2 is a secondary battery in which the thickness of the battery is thinner than the width of the battery. The thin battery 2 is a lithium ion secondary battery or a polymer battery. The polymer battery is a lithium polymer battery. However, the present invention does not specify the thin battery as a lithium ion secondary battery or a polymer battery. The thin battery may be a battery other than these batteries, for example, a nickel-hydrogen battery or a nickel-cadmium battery.
【００１２】外装ケース１は、絶縁材を成形して製作さ
れる。外装ケース１を成形する絶縁材は好ましくはプラ
スチックである。図の外装ケース１は、薄型電池２の表
裏面を外部に表出させる開口部３を設けて、薄型電池２
の両側面と両端面とをカバーする方形枠形に成形してい
る。外装ケース１は、薄型電池２の両側面をカバーする
側面ケース部１ａと、薄型電池２の両端面をカバーする
端部ケース部１ｂとを備える。側面ケース部１ａは、図
２の横断面図に示すように、保持溝４を内面に設けてい
る。外装ケース１は、側面ケース部１ａの保持溝４に、
薄型電池２の両側面の中央突出部を入れている。この構
造の外装ケース１は、側面ケース部１ａで薄型電池２の
両側を保持して、薄型電池２が図の矢印Ａ、Ｂで示すよ
うに、表裏方向に抜けるのを防止する。図２の断面図に
示すように、中央に突出部のある薄型電池２は、突出部
を保持溝４に入れることにより、側面ケース部１ａを薄
型電池２の表裏面に突出させることなく、表裏方向にず
れるの阻止できる。リチウムイオン二次電池やポリマー
電池等の薄型電池は、両側面を所定の曲率半径で湾曲す
る形状としている。湾曲面である薄型電池２の両側面
は、コーナー縁に沿って面取り部があって、中央に突出
部がある。このため、面取り部に、保持溝４の両側壁を
案内する構造として、側面ケース部１ａが薄型電池２の
表裏に突出しないようにしながら、薄型電池２の表裏方
向のずれを阻止できる。ただ、本発明の電池パックは、
側面ケース部１ａに必ずしも保持溝４を設けることな
く、薄型電池の両側面を側面ケース部の内面に接着剤で
接着し、あるいは粘着剤で付着し、あるいはまた両面粘
着テープで付着して固定することもできる。The outer case 1 is manufactured by molding an insulating material. The insulating material forming the outer case 1 is preferably plastic. The outer case 1 shown in the figure is provided with an opening 3 for exposing the front and back surfaces of the thin battery 2 to the outside.
It is formed in a rectangular frame shape that covers both side surfaces and both end surfaces. The outer case 1 includes side case portions 1 a that cover both side surfaces of the thin battery 2 and end case portions 1 b that cover both end surfaces of the thin battery 2. The side case portion 1a is provided with a holding groove 4 on the inner surface, as shown in the cross-sectional view of FIG. The outer case 1 is inserted into the holding groove 4 of the side case 1a,
The central protrusions on both side surfaces of the thin battery 2 are inserted. The outer case 1 of this structure holds both sides of the thin battery 2 by the side case portion 1a, and prevents the thin battery 2 from slipping out in the front-back direction as indicated by arrows A and B in the figure. As shown in the cross-sectional view of FIG. 2, the thin battery 2 having a projecting portion in the center is provided with a projecting portion in the holding groove 4 so that the side case portion 1 a does not project to the front and back surfaces of the thin battery 2 and It can be prevented from shifting in the direction. Thin batteries such as lithium ion secondary batteries and polymer batteries have a shape in which both side surfaces are curved with a predetermined radius of curvature. Both sides of the thin battery 2, which is a curved surface, have chamfers along the corner edges and a protrusion in the center. Therefore, the chamfered portion has a structure for guiding both side walls of the holding groove 4, so that the side case portion 1a can be prevented from protruding to the front and back of the thin battery 2 while preventing the thin battery 2 from shifting in the front and back directions. However, the battery pack of the present invention is
The holding groove 4 is not necessarily provided in the side surface case portion 1a, and both side surfaces of the thin battery are adhered to the inner surface of the side surface case portion with an adhesive, attached with an adhesive, or attached with a double-sided adhesive tape to be fixed. You can also
【００１３】外装ケース１は、図２と図３の断面図に示
すように、側面ケース部１ａと端部ケース部１ｂの両方
を薄型電池２の表裏面から突出しない形状に成形して、
外装ケース１の厚さを薄型電池２の厚さにほぼ等しくし
ている。図の外装ケース１は、側面ケース部１ａと端部
ケース部１ｂの一部を薄型電池２の表裏面と同一平面に
成形している。薄型電池２の表裏にラベル等の絶縁シー
ト７を接着する電池パックは、絶縁シート７の厚さに相
当するだけ外装ケース１を薄型電池２よりも厚く成形し
て、薄型電池２と外装ケース１とを同じ厚さにできる。
ただし、本発明の電池パックは、外装ケースを薄型電池
よりも薄く成形することもでき、また、外装ケースが薄
型電池の表面からわずかに突出する形状とすることもで
きる。外装ケースが薄型電池から突出している電池パッ
クは、突出部を嵌入する凹部を電気機器の電池装着部に
設けて電気機器に装着できる。したがって、本明細書に
おいて、外装ケースの厚さを薄型電池の厚さにほぼ等し
くするとは、外装ケースが薄型電池の表面からわずかに
突出する程度、たとえば、１ｍｍ以下に突出する程度に
外装ケースが薄型電池より厚くなる状態を含むものとす
る。As shown in the sectional views of FIG. 2 and FIG. 3, the outer case 1 is formed such that both the side case portion 1a and the end case portion 1b do not protrude from the front and back surfaces of the thin battery 2,
The thickness of the outer case 1 is made substantially equal to the thickness of the thin battery 2. In the outer case 1 shown in the figure, a part of the side case 1a and a part of the end case 1b are formed in the same plane as the front and back surfaces of the thin battery 2. In the battery pack in which the insulating sheet 7 such as a label is adhered to the front and back of the thin battery 2, the outer case 1 is formed thicker than the thin battery 2 by the thickness of the insulating sheet 7, and the thin battery 2 and the outer case 1 are formed. And can have the same thickness.
However, in the battery pack of the present invention, the outer case can be formed thinner than the thin battery, and the outer case can be formed to slightly project from the surface of the thin battery. In the battery pack in which the outer case projects from the thin battery, a recess into which the projecting portion is fitted can be provided in the battery mounting portion of the electrical device to be mounted on the electrical device. Therefore, in the present specification, to make the thickness of the outer case approximately equal to the thickness of the thin battery means that the outer case slightly protrudes from the surface of the thin battery, for example, the outer case protrudes to 1 mm or less. It also includes the condition that the battery is thicker than the thin battery.
【００１４】図１と図３の電池パックは、外装ケース１
の端部ケース部１ｂ内に、出力端子８の端子ホルダ５を
配設している。図の電池パックは、薄型電池２の凸部電
極１０側をカバーする端部ケース部１ｂに端子ホルダ５
を内蔵させて、ここに出力端子８を配設している。凸部
電極１０と反対側の端部ケース部１ｂは、薄型電池２の
底面をカバーしている。端子ホルダ５は、絶縁材を成形
して製作される。端子ホルダ５を成形する絶縁材は、好
ましくはプラスチックである。端子ホルダ５は、その外
形を、薄型電池２の凸部電極１０のある端面の外形にほ
ぼ等しくし、あるいは端面の外形よりも多少は小さく成
形して、薄型電池２を電池端面から見る状態で、端子ホ
ルダ５が薄型電池２から外部に突出しない形状としてい
る。この端子ホルダ５は、電池端面との対向面の反対側
に一対の出力端子８を設けている。出力端子８は金属板
で、出力端子８である金属板は、端子ホルダ５に固定さ
れ、あるいは端子ホルダ５と外装ケース１との間に挟着
されて定位置に固定される。The battery pack shown in FIGS. 1 and 3 has an outer case 1
The terminal holder 5 of the output terminal 8 is arranged in the end case portion 1b. The battery pack shown in the figure has a terminal holder 5 in the end case 1b that covers the convex electrode 10 side of the thin battery 2.
Is built in, and the output terminal 8 is disposed here. The end case portion 1 b opposite to the convex electrode 10 covers the bottom surface of the thin battery 2. The terminal holder 5 is manufactured by molding an insulating material. The insulating material forming the terminal holder 5 is preferably plastic. The terminal holder 5 has an outer shape that is substantially equal to the outer shape of the end surface of the thin battery 2 on which the convex electrode 10 is provided, or is formed to be slightly smaller than the outer shape of the end surface so that the thin battery 2 can be viewed from the battery end surface. The terminal holder 5 has a shape that does not protrude from the thin battery 2 to the outside. The terminal holder 5 is provided with a pair of output terminals 8 on the side opposite to the surface facing the battery end surface. The output terminal 8 is a metal plate, and the metal plate that is the output terminal 8 is fixed to the terminal holder 5 or sandwiched between the terminal holder 5 and the outer case 1 and fixed in place.
【００１５】端子ホルダ５は、外装ケース１の端部ケー
ス部１ｂの内部に配設される。ここに配設される端子ホ
ルダ５は、端部ケース部１ｂの内面と薄型電池２の電池
端面とに間に挟着されて定位置に固定される。外装ケー
ス１は、端部ケース部１ｂに電極窓１３を開口してい
る。電極窓１３は、端子ホルダ５に固定している出力端
子８を外装ケース１の外部に表出させる。したがって、
電極窓１３は、端子ホルダ５を外装ケース１の内部の定
位置に固定して、出力端子８を外部に表出できる位置に
開口される。外装ケース１に内蔵される端子ホルダ５
は、薄型電池２に押されて定位置に固定されて、出力端
子８を正確に定位置に配置する。The terminal holder 5 is arranged inside the end case portion 1b of the outer case 1. The terminal holder 5 disposed here is sandwiched between the inner surface of the end case portion 1b and the battery end surface of the thin battery 2 and fixed in place. The outer case 1 has an electrode window 13 opened in the end case portion 1b. The electrode window 13 exposes the output terminal 8 fixed to the terminal holder 5 to the outside of the outer case 1. Therefore,
The electrode window 13 is opened at a position where the terminal holder 5 is fixed at a fixed position inside the outer case 1 and the output terminal 8 can be exposed to the outside. Terminal holder 5 built in the outer case 1
Is pressed by the thin battery 2 and fixed at a fixed position, and the output terminal 8 is accurately arranged at the fixed position.
【００１６】電池パックは、一対の出力端子８を、保護
素子１２を介して、薄型電池２の正負の電極に接続して
いる。図４は、電池パックの回路図を示す。この電池パ
ックは、正負の電極を、保護素子１２を介して一対の出
力端子８に接続している。一方の電極はＰＴＣを介して
出力端子８に接続され、他方の電極はヒューズを介して
出力端子８に接続している。この回路図の電池パック
は、正極側の出力端子８をヒューズを介して薄型電池２
の正極に接続し、負極側の出力端子８をＰＴＣを介して
薄型電池２の負極に接続している。この回路図とは反対
にＰＴＣとヒューズを接続することもできる。また、両
方の出力端子８をヒューズを介して薄型電池２の電極に
接続し、あるいはＰＴＣを介して薄型電池２の電極に接
続することもできる。薄型電池２の正負の両電極に保護
素子１２を接続している電池パックは、出力端子８と薄
型電池２の電極とを間違ってショートしても安全に使用
できる。それは、薄型電池２の何れの電極が出力端子８
に接続されても、保護素子１２が動作してショート電流
を遮断するからである。電池パックは、外装缶と凸部電
極１０の両方の表面を絶縁している。したがって、通常
の使用状態においては、ショート電流が流れることはな
い。ただ、薄型電池２の外装缶の表面を被覆している絶
縁シート７が破損され、あるいは外装ケース１の内部に
金属線が挿入されて凸部電極１０に接触すると、ショー
ト電流が流れることがある。たとえば、薄型電池２の外
装缶と負極側の出力端子８とが金属で接続されるとき、
外装缶の絶縁が不完全であると、ショート電流が流れ
る。また、外装ケース１と薄型電池２との間に金属線が
挿入され、この金属線が正極側の出力端子８に接触する
とショート電流が流れる。両出力端子８と正負の電極と
の間に保護素子１２を接続している電池パックは、ショ
ート電流が流れると、これが動作してショート電流を遮
断する。In the battery pack, the pair of output terminals 8 are connected to the positive and negative electrodes of the thin battery 2 via the protective element 12. FIG. 4 shows a circuit diagram of the battery pack. In this battery pack, positive and negative electrodes are connected to a pair of output terminals 8 via a protective element 12. One electrode is connected to the output terminal 8 via the PTC, and the other electrode is connected to the output terminal 8 via the fuse. In the battery pack of this circuit diagram, the thin battery 2 is provided with the output terminal 8 on the positive electrode side through a fuse.
The output terminal 8 on the negative electrode side is connected to the negative electrode of the thin battery 2 via the PTC. Contrary to this circuit diagram, the PTC and the fuse can be connected. Further, both output terminals 8 can be connected to the electrodes of the thin battery 2 via fuses or to the electrodes of the thin battery 2 via PTC. The battery pack in which the protective element 12 is connected to both positive and negative electrodes of the thin battery 2 can be safely used even if the output terminal 8 and the electrode of the thin battery 2 are accidentally short-circuited. It depends on which electrode of the thin battery 2 is the output terminal 8
This is because the protection element 12 operates and cuts off the short-circuit current even when it is connected to. The battery pack insulates both surfaces of the outer can and the convex electrode 10. Therefore, the short current does not flow in the normal use state. However, if the insulating sheet 7 that covers the surface of the outer can of the thin battery 2 is damaged, or if a metal wire is inserted into the outer case 1 and comes into contact with the convex electrode 10, a short-circuit current may flow. . For example, when the outer case of the thin battery 2 and the output terminal 8 on the negative electrode side are connected by metal,
If the insulation of the outer can is imperfect, a short-circuit current will flow. Further, when a metal wire is inserted between the outer case 1 and the thin battery 2 and the metal wire contacts the output terminal 8 on the positive electrode side, a short-circuit current flows. In the battery pack in which the protection element 12 is connected between the both output terminals 8 and the positive and negative electrodes, when a short circuit current flows, this operates to cut off the short circuit current.
【００１７】保護素子１２は、図５の断面図に示すよう
に、端子ホルダ５の内部に配置される。図の端子ホルダ
５は、薄型電池２との対向面に保護素子１２の収納部１
４を設けて、ここに保護素子１２を配置している。端子
ホルダ５のない電池パックは、外装ケース１の端部ケー
ス部１ｂに収納部を設けて、ここに保護素子１２を内蔵
させる。The protective element 12 is arranged inside the terminal holder 5, as shown in the sectional view of FIG. The terminal holder 5 shown in the drawing has a housing 1 for the protective element 12 on the surface facing the thin battery 2.
4 is provided, and the protection element 12 is arranged here. In the battery pack without the terminal holder 5, a storage portion is provided in the end case portion 1b of the outer case 1, and the protection element 12 is built in the storage portion.
【００１８】図の電池パックは、保護回路として保護素
子１２を備える。ただ、電池パックは、保護回路とし
て、電流を検出して過電流が流れると電流を遮断する回
路、電池電圧を検出して電池の過充電や過放電を検出し
て電流を遮断する回路等を、端子ホルダ５や外装ケース
１に内蔵することもできる。保護回路を内蔵させる外装
ケースは、これを収納する収納室を設けて、ここに保護
回路を内蔵して外部から絶縁する。保護回路は、プリン
ト基板に電子部品を実装して実現される。保護回路を内
蔵する電池パックは、出力端子８を定位置に配置する端
子ホルダ５に保護回路を内蔵させて、この端子ホルダ５
を外装ケース１の端部ケース部１ｂに内蔵させることも
できる。The battery pack shown in the figure includes a protection element 12 as a protection circuit. However, as a protection circuit, the battery pack includes a circuit that detects the current and shuts off the current when an overcurrent flows, a circuit that detects the battery voltage and detects overcharge or overdischarge of the battery, and shuts off the current. It can also be built in the terminal holder 5 or the outer case 1. The outer case containing the protection circuit is provided with a storage chamber for storing the protection circuit, and the protection circuit is built therein to insulate it from the outside. The protection circuit is realized by mounting electronic components on a printed circuit board. In a battery pack having a built-in protection circuit, the protection circuit is built in the terminal holder 5 that arranges the output terminal 8 at a fixed position.
Can be built in the end case portion 1b of the outer case 1.
【００１９】薄型電池２は、図６に示すように、端子ホ
ルダ５を配設する電池端面に絶縁リング９を配設してい
る。電池端面は、薄型電池２の凸部電極１０を設けてい
る電池端面に配設されるので、絶縁リング９も凸部電極
１０のある電池端面に配設される。ここに配置される絶
縁リング９は、凸部電極１０を突出させるための貫通孔
１１を設けており、この貫通孔１１に凸部電極１０を入
れて、電池端面に固定されて電池端面を絶縁する。絶縁
リング９は、接着して電池端面に固定され、あるいは、
両面接着テープを介して電池端面に接着して固定され、
あるいはまた粘着層を介して、電池端面に接着して固定
される。絶縁リング９の幅（Ｗ1）は、電池端面の幅
（Ｗ2）よりも小さい。さらに好ましくは、絶縁リング
９の長さも、端子ホルダ５の長さよりも短くする。この
絶縁リング９は、図３の断面図に示すように、端子ホル
ダ５の内側に嵌入して定位置に固定される。As shown in FIG. 6, the thin battery 2 has an insulating ring 9 on the end surface of the battery on which the terminal holder 5 is arranged. Since the battery end surface is disposed on the battery end surface of the thin battery 2 on which the convex electrode 10 is provided, the insulating ring 9 is also disposed on the battery end surface on which the convex electrode 10 is provided. The insulating ring 9 arranged here is provided with a through hole 11 for projecting the convex electrode 10, and the convex electrode 10 is put into the through hole 11 and fixed to the battery end face to insulate the battery end face. To do. The insulating ring 9 is adhered and fixed to the end surface of the battery, or
It is fixed by adhering to the end surface of the battery via double-sided adhesive tape.
Alternatively, it is adhered and fixed to the end surface of the battery via the adhesive layer. The width (W1) of the insulating ring 9 is smaller than the width (W2) of the battery end surface. More preferably, the length of the insulating ring 9 is also shorter than the length of the terminal holder 5. The insulating ring 9 is fitted inside the terminal holder 5 and fixed in place, as shown in the cross-sectional view of FIG.
【００２０】絶縁リング９は、プラスチック等の絶縁材
を成形して製作される。絶縁リング９は、図７と図８に
示すように、上面に保護素子１２や端子ホルダ５に嵌合
される嵌合凸部１６を一体的に成形して設けることがで
きる。図の絶縁リング９は、リブ状の嵌合凸部１６を両
端部分に設けている。嵌合凸部１６は、図９に示すよう
に、電池端面に配設される保護素子１２に嵌合されて、
これ等を定位置に保持する。さらに、端子ホルダ５の下
面を、嵌合凸部１６に嵌着できる形状に成形し、嵌合凸
部１６を端子ホルダ５に嵌合して、端子ホルダ５を定位
置に配置することができる。The insulating ring 9 is manufactured by molding an insulating material such as plastic. As shown in FIGS. 7 and 8, the insulating ring 9 can be provided on the upper surface by integrally molding the fitting convex portion 16 that is fitted to the protection element 12 and the terminal holder 5. The insulating ring 9 shown in the figure has rib-like fitting convex portions 16 provided at both end portions. As shown in FIG. 9, the fitting convex portion 16 is fitted to the protection element 12 arranged on the end surface of the battery,
Hold them in place. Further, the lower surface of the terminal holder 5 is formed into a shape that can be fitted into the fitting convex portion 16, the fitting convex portion 16 is fitted into the terminal holder 5, and the terminal holder 5 can be arranged at a fixed position. .
【００２１】また、薄型電池２の電池端面に絶縁リング
９を配置する電池パックは、絶縁リング９で薄型電池２
の長さの寸法誤差を吸収する構造とすることもできる。
とくに、絶縁リング９に、厚さが弾性的に変形できるシ
ート材、たとえば不織布、絶縁紙、ゴム状弾性シートを
使用して、１枚の絶縁リング９で薄型電池２の寸法誤差
を吸収できる。また、弾性的に変形しない絶縁リング９
は、積層枚数を調整して薄型電池２の寸法誤差を吸収で
きる。ただし、絶縁リング９で薄型電池２の寸法誤差を
吸収する電池パックは、絶縁リングを端子ホルダの内側
に完全に入れるのではなく、絶縁リングの一部、あるい
は全周を、電池端面と端子ホルダで挟着する構造とし、
絶縁リングの弾性復元力で端子ホルダを押圧する構造と
する。この構造の電池パックは、薄型電池の寸法に関係
なく、端子ホルダを外装ケースの定位置に配置して、出
力端子を正確な位置に配置できる。In addition, the battery pack in which the insulating ring 9 is arranged on the battery end surface of the thin battery 2 has a thin battery 2 with the insulating ring 9.
It is also possible to adopt a structure that absorbs the dimensional error of the length.
Particularly, for the insulating ring 9, a sheet material whose thickness can be elastically deformed, for example, non-woven fabric, insulating paper, or a rubber-like elastic sheet can be used to absorb the dimensional error of the thin battery 2 with one insulating ring 9. In addition, the insulating ring 9 that does not elastically deform
Can adjust the number of stacked layers to absorb the dimensional error of the thin battery 2. However, in the battery pack that absorbs the dimensional error of the thin battery 2 by the insulating ring 9, the insulating ring is not completely inserted inside the terminal holder, but the insulating ring is partially or entirely surrounded by the battery end surface and the terminal holder. With a structure that is sandwiched between
The structure is such that the terminal holder is pressed by the elastic restoring force of the insulating ring. In the battery pack having this structure, the terminal holder can be arranged at a fixed position of the outer case and the output terminal can be arranged at an accurate position regardless of the dimensions of the thin battery.
【００２２】図１〜図３の外装ケース１は、薄型電池２
の表裏面に分割されてなる第１ケース１Ａ及び第２ケー
ス１Ｂを備える。第１ケース１Ａと第２ケース１Ｂは、
互いに側壁１７を連結して薄型電池２に装着される。第
１ケース１Ａと第２ケース１Ｂは、それぞれが側面ケー
ス部１ａと端部ケース部１ｂとを備える。第１ケース１
Ａと第２ケース１Ｂは、側面ケース部１ａの側壁１７を
互いに連結し、また、第１ケース１Ａと第２ケース１Ｂ
の端部ケース部１ｂも側壁１７を連結している。第１ケ
ース１Ａと第２ケース１Ｂは、互いに側壁１７の対向面
を超音波溶着して簡単かつ確実に連結される。超音波溶
着される第１ケース１Ａと第２ケース１Ｂは、熱可塑性
のプラスチックで一体的に成形されている。超音波溶着
される側壁１７の対向面は、図１の斜視図と図２の断面
図に示すように、一方に縦溝を設け、他方には縦溝に入
れられる凸条を設け、凸条を縦溝に入れる状態で超音波
溶着して、より確実に離れないように溶着して連結され
る。ただし、第１ケース１Ａと第２ケース１Ｂは、対向
面を接着して連結することもできる。The outer case 1 shown in FIGS. 1 to 3 is a thin battery 2
The first case 1A and the second case 1B, which are divided into the front and back surfaces, are provided. The first case 1A and the second case 1B are
The side walls 17 are connected to each other and mounted on the thin battery 2. The first case 1A and the second case 1B each include a side case portion 1a and an end case portion 1b. First case 1
A and the second case 1B connect the side walls 17 of the side case part 1a to each other, and the first case 1A and the second case 1B.
The end case portion 1b of the above also connects the side wall 17. The first case 1A and the second case 1B are easily and reliably connected to each other by ultrasonically welding the facing surfaces of the side walls 17 to each other. The first case 1A and the second case 1B that are ultrasonically welded are integrally molded of thermoplastic plastic. As shown in the perspective view of FIG. 1 and the cross-sectional view of FIG. 2, the opposing surface of the side wall 17 to be ultrasonically welded is provided with a vertical groove on one side and a ridge to be inserted into the vertical groove on the other side. Are ultrasonically welded in a state of being inserted in the vertical groove, and are welded and connected so as not to separate more reliably. However, the first case 1A and the second case 1B can be connected by adhering the facing surfaces.
【００２３】図の外装ケース１は、第１ケース１Ａと第
２ケース１Ｂの側壁１７をほぼ同じ高さとしている。こ
の外装ケース１は、第１ケース１Ａに薄型電池２を入
れ、その後、第１ケース１Ａに第２ケース１Ｂの側壁１
７を連結し、この状態で側壁１７を超音波溶着して連結
できる。このようにして連結される外装ケース１は、側
壁１７の対向面に設けている縦溝に凸条を入れることに
より、第１ケース１Ａと第２ケース１Ｂの側壁１７を位
置ずれしないように連結できる。このため、この状態で
連結して両側壁１７を、正確な位置で連結できる。In the case 1 shown in the figure, the side walls 17 of the first case 1A and the second case 1B have substantially the same height. In this outer case 1, the thin battery 2 is put in the first case 1A, and then the side wall 1 of the second case 1B is put in the first case 1A.
The side walls 17 can be connected by ultrasonic welding in this state. In the external case 1 thus connected, the vertical grooves formed on the facing surface of the side wall 17 connect the side walls 17 of the first case 1A and the second case 1B so as not to be displaced. it can. Therefore, the both side walls 17 can be connected at an accurate position by connecting in this state.
【００２４】互いに連結された第１ケース１Ａと第２ケ
ース１Ｂに収納された薄型電池２は、図２の断面図と図
１０の背面図に示すように、表面にラベル等の絶縁シー
ト７を接着して被覆される。絶縁シート７は、図１に示
すように、外装ケース１の開口部３の全面を塞ぐように
接着されて、外装ケース１の外部に表出している薄型電
池２の外装缶の全面を絶縁する。この構造は、表面を絶
縁処理していない外装缶の薄型電池２を使用して、外装
缶を絶縁できる。ただし、本発明の電池パックは、外装
缶の表面に絶縁シート７を接着することなく、図７のク
ロスハッチングで示すように、外装缶の表面に絶縁材６
を塗布して、外装缶を絶縁することもできる。この薄型
電池２を内蔵する電池パックは、外装ケース１の開口部
３に絶縁シート７を接着する必要がない。ただ、外装缶
の表面を絶縁材６で絶縁して、外装ケース１の開口部３
に絶縁シート７を接着して、二重に絶縁することもでき
る。As shown in the sectional view of FIG. 2 and the rear view of FIG. 10, the thin battery 2 housed in the first case 1A and the second case 1B connected to each other has an insulating sheet 7 such as a label on the surface. Adhesively coated. As shown in FIG. 1, the insulating sheet 7 is adhered so as to cover the entire surface of the opening 3 of the outer case 1, and insulates the entire outer case of the thin battery 2 exposed to the outside of the outer case 1. . This structure can insulate the outer can by using the thin battery 2 of the outer can whose surface is not subjected to insulation treatment. However, in the battery pack of the present invention, the insulating material 7 is not attached to the surface of the outer can, as shown by the cross-hatching in FIG.
Can be applied to insulate the outer can. In the battery pack incorporating the thin battery 2, it is not necessary to bond the insulating sheet 7 to the opening 3 of the outer case 1. However, the surface of the outer can is insulated with the insulating material 6, and the opening 3 of the outer case 1 is insulated.
It is also possible to double-insulate by bonding an insulating sheet 7 to the.
【００２５】さらに、絶縁シート７は、薄型電池２と外
装ケース１に接着して被覆することができる。図２に示
す絶縁シート７は、その外周部を、外装ケース１の開口
部３の開口端部にラップさせる状態で接着している。こ
のように、絶縁シート７の外周部を薄型電池２に接着す
る構造は、外装ケース１と薄型電池２とを絶縁シート７
を介して一体的に連結できるので、これらの位置ずれを
確実に防止できる特長がある。さらに、絶縁シートが接
着される薄型電池と外装ケースの接着面に凹凸または段
差などの非平面部がある電池パックは、この非平面部に
沿うように成形している絶縁シートを接着面に接着する
ことができる。図１１と図１２に示す電池パックは、外
装ケース１を薄型電池２の外周部よりも厚く設計してお
り、これらの境界部分に段差形状の非平面部２０が形成
されている。この電池パックは、図１３に示すように、
中央部の電池被覆部７Ａが外周部のケース被覆部７Ｂよ
りも内側にくぼんだ形状に成形されてなる絶縁シート７
を、薄型電池２と外装ケース１の接着面に接着してい
る。ただ、図１４に示すように、外装ケース１を薄型電
池２の外周部より薄く設計している電池パックは、電池
被覆部７Ａをケース被覆部７Ｂよりも外側に突出する形
状に成形してなる絶縁シート７を薄型電池２と外装ケー
ス１の接着面に接着することができる。Further, the insulating sheet 7 can be adhered to and covered with the thin battery 2 and the outer case 1. The insulating sheet 7 shown in FIG. 2 is adhered in such a manner that its outer peripheral portion is wrapped around the opening end portion of the opening 3 of the outer case 1. As described above, in the structure in which the outer peripheral portion of the insulating sheet 7 is adhered to the thin battery 2, the outer case 1 and the thin battery 2 are insulated from each other.
Since they can be integrally connected via, there is a feature that these positional deviations can be surely prevented. Furthermore, for a thin battery to which an insulating sheet is adhered and a battery pack with a non-planar portion such as irregularities or steps on the adhesive surface of the outer case, the insulating sheet molded along this non-planar portion is adhered to the adhesive surface. can do. In the battery packs shown in FIGS. 11 and 12, the outer case 1 is designed to be thicker than the outer peripheral portion of the thin battery 2, and a step-shaped non-planar portion 20 is formed at the boundary between them. This battery pack, as shown in FIG.
Insulating sheet 7 in which the central battery covering portion 7A is formed inwardly of the outer peripheral case covering portion 7B.
Are bonded to the bonding surfaces of the thin battery 2 and the outer case 1. However, as shown in FIG. 14, the battery pack in which the outer case 1 is designed to be thinner than the outer peripheral portion of the thin battery 2 is formed by molding the battery cover portion 7A into a shape protruding outward from the case cover portion 7B. The insulating sheet 7 can be bonded to the bonding surfaces of the thin battery 2 and the outer case 1.
【００２６】図１２と図１３に示す絶縁シート７は、薄
型電池２の外装缶に接着される電池被覆部７Ａと、外装
ケース１に接着されるケース被覆部７Ｂとの間に、非平
面形状である段差部７Ｃを成形している。この段差部７
Ｃは、電池被覆部７Ａとケース被覆部７Ｂとの間であっ
て、接着面の非平面部２０に対向する位置に成形され
る。この形状の絶縁シート７は、たとえば、平面状のシ
ートをプレス加工して段差形状に成形することができ
る。図１１に示す電池パックは、外装ケース１の開口部
３に沿って非平面部２０が形成されているので、絶縁シ
ート７の段差部７Ｃを開口部３に沿って成形している。
この形状の絶縁シート７は、非平面形状である段差部７
Ｃを接着面の非平面部２０に配設した状態で薄型電池２
と外装ケース１とに接着できるので、この部分にシワが
できるのを防止しながら速やかに接着できる特長があ
る。とくに、図１２に示す絶縁シート７は、段差部７Ｃ
を傾斜面としているので、前後左右方向への位置ずれを
この傾斜面で吸収しながら接着して、しかもこの部分を
目立たなくできる特長もある。The insulating sheet 7 shown in FIGS. 12 and 13 has a non-planar shape between the battery covering portion 7A adhered to the outer can of the thin battery 2 and the case covering portion 7B adhered to the outer case 1. 7C is formed. This step 7
C is formed between the battery covering portion 7A and the case covering portion 7B and at a position facing the non-planar portion 20 of the adhesive surface. The insulating sheet 7 having this shape can be formed into a step shape by pressing a flat sheet, for example. Since the non-planar portion 20 is formed along the opening 3 of the outer case 1 in the battery pack shown in FIG. 11, the step portion 7C of the insulating sheet 7 is formed along the opening 3.
The insulating sheet 7 having this shape has a non-planar step portion 7
Thin battery 2 with C disposed on the non-planar portion 20 of the adhesive surface
Since it can be adhered to the outer case 1, it has a feature that it can be quickly adhered while preventing wrinkles from being formed in this portion. In particular, the insulating sheet 7 shown in FIG.
Since it is an inclined surface, it has the feature that it can be bonded while absorbing the positional deviation in the front-back and left-right directions, and this part can be made inconspicuous.
【００２７】さらに、絶縁シート７は、非平面部２０に
沿って成形された非平面形状を目立たなくする表面処理
をすることができる。この表面処理としては、図示しな
いが、複数の平行線や、方向性のない無数の曲線を表示
し、あるいは、濃淡差や色の違いを利用した装飾を施す
ことができる。これらの表面処理は、明暗や色彩等の目
の錯覚を利用して、絶縁シート７の非平面形状を目立た
なくする。このように、絶縁シート７の非平面形状を目
立たなくできる電池パックは、外観をよくできる特長が
ある。Furthermore, the insulating sheet 7 can be surface-treated so as to make the non-planar shape formed along the non-planar portion 20 inconspicuous. As the surface treatment, although not shown, a plurality of parallel lines, innumerable curves having no directionality can be displayed, or decoration can be performed by utilizing the difference in shade and the difference in color. These surface treatments make the non-planar shape of the insulating sheet 7 inconspicuous by utilizing the illusion of eyes such as brightness and darkness. As described above, the battery pack in which the non-planar shape of the insulating sheet 7 is inconspicuous has a feature that the appearance can be improved.
【００２８】さらに、第１ケース１Ａと第２ケース１Ｂ
を連結してなる外装ケース１は、薄型電池２の底面に位
置する端部ケース部１ｂに、取出用ツメ１８を突出して
設けている。図の電池パックは、取出用ツメ１８を第２
ケース１Ｂに突出するように設けている。第２ケース１
Ｂは、第１ケース１Ａに溶着等の方法でしっかりと連結
されるので、取出用ツメ１８を設けている部分を充分な
強度にできる。とくに、図３の断面図に示すように、端
部ケース部１ｂの内面に、薄型電池２の底面に溶着して
いるリード１５を嵌入する凹部１９を設けて、この凹部
１９にリード１５を嵌入する構造と、ラベル等の絶縁シ
ート７で薄型電池２と外装ケース１とを連結する構造
は、外装ケース１と薄型電池２とをしっかりと連結し
て、取出用ツメ１８のある外装ケース１と薄型電池２と
をしっかりと連結できる特長がある。Further, the first case 1A and the second case 1B
In the outer case 1 formed by connecting the above, the take-out tabs 18 are provided so as to protrude from the end case portion 1b located on the bottom surface of the thin battery 2. The battery pack shown in the figure has the take-out tab 18 at the second position.
It is provided so as to project to the case 1B. Second case 1
Since B is firmly connected to the first case 1A by a method such as welding, the portion where the pick-up tab 18 is provided can have sufficient strength. In particular, as shown in the cross-sectional view of FIG. 3, a recess 19 into which the lead 15 welded to the bottom surface of the thin battery 2 is fitted is provided on the inner surface of the end case 1b, and the lead 15 is fitted into the recess 19. The structure for connecting the thin battery 2 and the outer case 1 with the insulating sheet 7 such as a label firmly connects the outer case 1 and the thin battery 2 to the outer case 1 having the ejection tabs 18. It has the feature that it can be firmly connected to the thin battery 2.
【００２９】[0029]
【発明の効果】本発明の電池パックは、薄型電池を薄く
することなく、これを収納する電池パック全体の厚さを
極限まで薄くできる特長がある。それは、本発明の電池
パックが、薄型電池を収納する外装ケースに、薄型電池
の表裏面を外部に表出させる開口部を設けて、薄型電池
の両側面と両端面とをカバーする方形枠形に成形してい
るからである。この構造の電池パックは、従来のように
薄型電池の表裏面を外装ケースで被覆しない構造である
から、外装ケースに薄型電池を収納しながら、電池パッ
ク全体の厚さを薄型電池と同じにすることも可能であ
る。The battery pack of the present invention has the feature that the overall thickness of the battery pack for accommodating the thin battery can be made extremely thin without thinning the thin battery. It is a rectangular frame shape in which the battery pack of the present invention is provided with an opening for exposing the front and back surfaces of the thin battery to the outside in an outer case that houses the thin battery, and covers both side surfaces and both end surfaces of the thin battery. Because it is molded into. Since the battery pack with this structure has a structure in which the front and back surfaces of the thin battery are not covered with the outer case unlike the conventional case, the entire thickness of the battery pack is made the same as that of the thin battery while accommodating the thin battery in the outer case. It is also possible.
【図１】本発明の実施例にかかる電池パックの分解斜視
図FIG. 1 is an exploded perspective view of a battery pack according to an embodiment of the present invention.
【図２】図１に示す電池パックの横断面図FIG. 2 is a cross-sectional view of the battery pack shown in FIG.
【図３】図１に示す電池パックの縦断面図FIG. 3 is a vertical sectional view of the battery pack shown in FIG.
【図４】図１に示す電池パックの回路図FIG. 4 is a circuit diagram of the battery pack shown in FIG.
【図５】薄型電池に端子ホルダを連結した状態を示す一
部断面正面図FIG. 5 is a partial cross-sectional front view showing a state in which a terminal holder is connected to a thin battery.
【図６】薄型電池と絶縁リングを示す分解斜視図FIG. 6 is an exploded perspective view showing a thin battery and an insulating ring.
【図７】薄型電池の電池端面に絶縁リングを積層してい
る状態を示す正面図FIG. 7 is a front view showing a state in which an insulating ring is laminated on a battery end surface of a thin battery.
【図８】薄型電池の電池端面に絶縁リングを積層してい
る状態を示す平面図FIG. 8 is a plan view showing a state in which an insulating ring is laminated on a battery end surface of a thin battery.
【図９】薄型電池にふたつの保護素子を連結している状
態を示す正面図FIG. 9 is a front view showing a state in which two protection elements are connected to a thin battery.
【図１０】図１に示す電池パックの背面図FIG. 10 is a rear view of the battery pack shown in FIG.
【図１１】本発明の他の実施例にかかる電池パックの平
面図FIG. 11 is a plan view of a battery pack according to another embodiment of the present invention.
【図１２】図１１に示す電池パックの横断面図12 is a cross-sectional view of the battery pack shown in FIG.
【図１３】図１２に示す電池パックに接着される絶縁シ
ートの断面図13 is a cross-sectional view of an insulating sheet bonded to the battery pack shown in FIG.
【図１４】本発明の他の実施例にかかる電池パックの平
面図FIG. 14 is a plan view of a battery pack according to another embodiment of the present invention.
１…外装ケース １ａ…側面ケース部 １ｂ…端
部ケース部
１Ａ…第１ケース １Ｂ…第２ケース
２…薄型電池
３…開口部
４…保持溝
５…端子ホルダ
６…絶縁材
７…絶縁シート ７Ａ…電池被覆部 ７Ｂ…ケ
ース被覆部
７Ｃ…段差部
８…出力端子
９…絶縁リング
１０…凸部電極
１１…貫通孔
１２…保護素子
１３…電極窓
１４…収納部
１５…リード
１６…嵌合凸部
１７…側壁
１８…取出用ツメ
１９…凹部
２０…非平面部DESCRIPTION OF SYMBOLS 1 ... Exterior case 1a ... Side case 1b ... End case 1A ... 1st case 1B ... 2nd case 2 ... Thin battery 3 ... Opening 4 ... Retaining groove 5 ... Terminal holder 6 ... Insulating material 7 ... Insulating sheet 7A Battery cover 7B Case cover 7C Step 8 Output terminal 9 Insulating ring 10 Convex electrode 11 Through hole 12 Protective element 13 Electrode window 14 Housing 15 Lead 16 Fitting convex Part 17 ... Side wall 18 ... Extraction claw 19 ... Recess 20 ... Non-planar part
Claims (14)
幅よりも薄い薄型電池(2)を装着してなる電池パックに
おいて、 外装ケース(1)に、薄型電池(2)の表裏面を外部に表出さ
せる開口部(3)を設けて、薄型電池(2)の両側面と両端面
とをカバーする方形枠形に成形しており、外装ケース
(1)の厚さを薄型電池(2)の厚さにほぼ等しく、あるいは
外装ケース(1)を薄型電池(2)よりも薄くしてなることを
特徴とする電池パック。1. A battery pack in which a thin battery (2) having a battery thickness smaller than the width of the battery is mounted on the outer case (1), wherein the thin battery (2) is mounted on the outer case (1). It has an opening (3) that exposes the front and back sides to the outside, and is molded into a rectangular frame shape that covers both sides and both sides of the thin battery (2).
A battery pack characterized in that the thickness of (1) is approximately equal to the thickness of the thin battery (2), or the outer case (1) is thinner than the thin battery (2).
をカバーする側面ケース部(1a)と、薄型電池(2)の両端
面をカバーする端部ケース部(1b)とを備え、側面ケース
部(1a)は、内面に保持溝(4)を設けており、この保持溝
(4)に、薄型電池両側面の中央突出部を入れている請求
項１に記載される電池パック。2. The outer case (1) includes a side case portion (1a) covering both side surfaces of the thin battery (2) and an end case portion (1b) covering both end surfaces of the thin battery (2). The side case portion (1a) has a holding groove (4) on its inner surface.
The battery pack according to claim 1, wherein the central protrusions on both side surfaces of the thin battery are included in (4).
出力端子(8)の端子ホルダ(5)を配設している請求項１に
記載される電池パック。3. The end case portion (1b) of the outer case (1),
The battery pack according to claim 1, wherein a terminal holder (5) for the output terminal (8) is provided.
に分割されてなる第１ケース(1A)及び第２ケース(1B)を
備え、第１ケース(1A)と第２ケース(1B)は側面ケース部
(1a)と端部ケース部(1b)とを備え、第１ケース(1A)と第
２ケース(1B)が側面ケース部(1a)と端部ケース部(1b)と
を連結して薄型電池(2)を保持している請求項１に記載
される電池パック。4. The outer case (1) comprises a first case (1A) and a second case (1B), which are formed by dividing the front and back surfaces of a thin battery (2), and the first case (1A) and the second case (1A). Case (1B) is the side case
(1a) and an end case part (1b), the first case (1A) and the second case (1B) connect the side case part (1a) and the end case part (1b) to each other to form a thin battery. The battery pack according to claim 1, which holds (2).
着して連結している請求項４に記載される電池パック。5. The battery pack according to claim 4, wherein the first case (1A) and the second case (1B) are welded and connected to each other.
ている請求項１に記載される電池パック。6. The battery pack according to claim 1, wherein a surface of the thin battery (2) is covered with an insulating material (6).
ト(7)を接着して被覆している請求項１に記載される電
池パック。7. The battery pack according to claim 1, wherein the thin battery (2) and the outer case (1) are covered with an insulating sheet (7) adhered thereto.
と外装ケース(1)の接着面に凹凸または段差などの非平
面部(20)があり、この非平面部(20)に沿うように成形さ
れてなる絶縁シート(7)が薄型電池(2)と外装ケース(1)
の接着面に接着されてなる請求項７に記載される電池パ
ック。8. A thin battery (2) to which an insulating sheet (7) is adhered
There is a non-planar part (20) such as irregularities or steps on the adhesive surface of the outer case (1) and the insulating sheet (7) formed along the non-planar part (20) and the thin battery (2). And outer case (1)
The battery pack according to claim 7, wherein the battery pack is adhered to the adhesive surface of the battery.
て成形された非平面形状を目立たなくする表面処理をし
てなる請求項８に記載される電池パック。9. The battery pack according to claim 8, wherein the insulating sheet (7) is surface-treated to make the non-planar shape formed along the non-planar portion (20) inconspicuous.
ス部(1b)に、保護回路を内蔵する収納室を設けており、
収納室に保護回路を内蔵して外部から絶縁している請求
項１に記載される電池パック。10. An end case portion (1b) in which the output terminal (8) is arranged is provided with a storage chamber containing a protection circuit,
The battery pack according to claim 1, wherein a protection circuit is built in the storage chamber and insulated from the outside.
ホルダ(5)が保護回路を内蔵しており、この端子ホルダ
を外装ケース(1)の端部ケース部(1b)に内蔵させている
請求項１に記載される電池パック。11. The terminal holder (5) for arranging the output terminal (8) in a fixed position has a built-in protection circuit, and this terminal holder is built in the end case portion (1b) of the outer case (1). The battery pack according to claim 1.
いる端面に絶縁リング(9)を配設しており、絶縁リング
(9)は凸部電極(10)を突出させる貫通孔(11)を有し、貫
通孔(11)に凸部電極(10)を入れて端面を絶縁している請
求項１に記載される電池パック。12. An insulating ring (9) is provided on the end surface of the thin battery (2) on which the convex electrode (10) is provided.
The (9) has a through hole (11) for projecting the convex electrode (10), and the convex electrode (10) is put in the through hole (11) to insulate the end face. Battery pack.
(12)を連結している請求項１に記載される電池パック。13. A protective device for the positive and negative electrodes of a thin battery (2).
The battery pack according to claim 1, wherein (12) is connected.
電池、またはポリマー電池である請求項１に記載される
電池パック。14. The battery pack according to claim 1, wherein the thin battery (2) is a lithium ion secondary battery or a polymer battery.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002129356A JP3806665B2 (en) | 2002-04-30 | 2002-04-30 | Battery pack |
| TW092106825A TWI232605B (en) | 2002-04-30 | 2003-03-26 | Battery box |
| US10/424,739 US7338733B2 (en) | 2002-04-30 | 2003-04-29 | Battery pack |
| CNB031241271A CN1220288C (en) | 2002-04-30 | 2003-04-29 | Battery assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002129356A JP3806665B2 (en) | 2002-04-30 | 2002-04-30 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003323876A true JP2003323876A (en) | 2003-11-14 |
| JP3806665B2 JP3806665B2 (en) | 2006-08-09 |
Family
ID=29542811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002129356A Expired - Fee Related JP3806665B2 (en) | 2002-04-30 | 2002-04-30 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3806665B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005346964A (en) * | 2004-05-31 | 2005-12-15 | Sanyo Electric Co Ltd | Battery pack |
| EP1668720A1 (en) * | 2003-10-01 | 2006-06-14 | LG Chem, Ltd. | Packing structure for lithium ion polymer battery |
| JP2006164559A (en) * | 2004-12-02 | 2006-06-22 | Sanyo Electric Co Ltd | Battery pack |
| JP2008532223A (en) * | 2005-04-01 | 2008-08-14 | エルジー・ケム・リミテッド | Very thin battery pack |
| KR100883921B1 (en) * | 2005-04-19 | 2009-02-18 | 주식회사 엘지화학 | Improved Battery Pack |
| US8007937B2 (en) | 2005-12-02 | 2011-08-30 | Sony Corporation | Battery pack |
| JP2013054848A (en) * | 2011-09-01 | 2013-03-21 | Toshiba Corp | Electronic apparatus |
| CN112886108A (en) * | 2021-01-18 | 2021-06-01 | 东莞新能德科技有限公司 | Battery, battery pack, and electronic device |
-
2002
- 2002-04-30 JP JP2002129356A patent/JP3806665B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1668720A1 (en) * | 2003-10-01 | 2006-06-14 | LG Chem, Ltd. | Packing structure for lithium ion polymer battery |
| US8980466B2 (en) | 2003-10-01 | 2015-03-17 | Lg Chem, Ltd. | Packing structure for lithium ion polymer battery |
| EP1668720A4 (en) * | 2003-10-01 | 2010-05-26 | Lg Chemical Ltd | Packing structure for lithium ion polymer battery |
| JP4562426B2 (en) * | 2004-05-31 | 2010-10-13 | 三洋電機株式会社 | Battery pack |
| JP2005346964A (en) * | 2004-05-31 | 2005-12-15 | Sanyo Electric Co Ltd | Battery pack |
| JP2006164559A (en) * | 2004-12-02 | 2006-06-22 | Sanyo Electric Co Ltd | Battery pack |
| JP4553706B2 (en) * | 2004-12-02 | 2010-09-29 | 三洋電機株式会社 | Battery pack |
| JP2008532223A (en) * | 2005-04-01 | 2008-08-14 | エルジー・ケム・リミテッド | Very thin battery pack |
| KR100883921B1 (en) * | 2005-04-19 | 2009-02-18 | 주식회사 엘지화학 | Improved Battery Pack |
| US8007937B2 (en) | 2005-12-02 | 2011-08-30 | Sony Corporation | Battery pack |
| JP2013054848A (en) * | 2011-09-01 | 2013-03-21 | Toshiba Corp | Electronic apparatus |
| US8675144B2 (en) | 2011-09-01 | 2014-03-18 | Kabushiki Kaisha Toshiba | Television and electronic apparatus |
| CN112886108A (en) * | 2021-01-18 | 2021-06-01 | 东莞新能德科技有限公司 | Battery, battery pack, and electronic device |
| CN112886108B (en) * | 2021-01-18 | 2022-08-30 | 东莞新能德科技有限公司 | Battery, battery pack, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3806665B2 (en) | 2006-08-09 |
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