JP3653475B2 - Pack battery - Google Patents

Pack battery Download PDF

Info

Publication number
JP3653475B2
JP3653475B2 JP2001097747A JP2001097747A JP3653475B2 JP 3653475 B2 JP3653475 B2 JP 3653475B2 JP 2001097747 A JP2001097747 A JP 2001097747A JP 2001097747 A JP2001097747 A JP 2001097747A JP 3653475 B2 JP3653475 B2 JP 3653475B2
Authority
JP
Japan
Prior art keywords
circuit board
printed circuit
battery
battery pack
plate
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.)
Expired - Fee Related
Application number
JP2001097747A
Other languages
Japanese (ja)
Other versions
JP2002298809A (en
Inventor
大樹 寺岡
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP2001097747A priority Critical patent/JP3653475B2/en
Publication of JP2002298809A publication Critical patent/JP2002298809A/en
Application granted granted Critical
Publication of JP3653475B2 publication Critical patent/JP3653475B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

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

  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、パック電池の改良に関し、とくにプリント基板を内蔵するパック電池に関する。
【0002】
【従来の技術】
保護回路を内蔵するパック電池は、電池の過充電や過放電を防止しながら安心して使用できる。保護回路が過充電や過放電を検出して電池の電流を遮断するからである。このパック電池は、保護回路部品を実装するプリント基板を内蔵している。プリント基板は、電池に接触してショートする等の弊害を防止するために、決められた位置に固定される。従来のパック電池は、図1に示すように、プリント基板2をホルダー12で定位置に保持する。ホルダー12は、プラスチックを成形して製作される。プリント基板2を定位置に保持するために、ホルダー12は、プリント基板2を嵌入できる凹部や凸部が成形される。ホルダー12で定位置に支えられるプリント基板2は、リード板13を介して電池1に連結される。リード板13は、一端を電池1にスポット溶接して連結され、他端をプリント基板2に半田付けして連結される。プリント基板2は、全体の位置ずれを阻止するために、複数のリード板13で電池に連結される。
【0003】
【発明が解決しようとする課題】
ところで、パック電池は、充電容量を小さくすることなく、できるかぎり外形を小さくすることが要求される。この要望を満たすために、電池は体積当りの容量を増加することに苦心している。ただ、電池と同じようにパック電池も体積当りの容量を大きくすることが要求される。この要求からホルダーを内蔵させることは、パック電池の体積を大きくする原因となる。とくに、しっかりとプリント基板を定位置に保持するホルダーは、プラスチックを厚く成形する必要がある。このことは、パック電池の内容積に対するホルダーの割合を増加させて、パック電池の外形を大きくする。さらに、ホルダーは、パック電池の重量を増加させる原因ともなり、パック電池を軽量化するための弊害ともなる。
【0004】
プリント基板は、ホルダーを使用することなく、電池に接着して固定することもできる。ただ、この構造は、接着剤が硬化するまでプリント基板が電池に固定されない。このため、接着剤が硬化するまでプリント基板と電池とを定位置に保持する必要がある。プリント基板を電池に接着する接着剤の硬化時間は、短くて数分である。したがって、接着剤は、プリント基板を速やかに電池に連結できず、能率よく多量生産するのを難しくする。また、接着剤もホルダーと同じように、パック電池の内容積の一部を専有するので、パック電池を大きく、重くする原因となる。
【0005】
また、図1に示すパック電池は、ホルダー12でプリント基板2を定位置に仮り止めする状態で、リード板13を連結するので製造に手間がかかって、製造コストも高くなる。リード板13がプリント基板2と電池1の両方に連結されるまで、リード板13は、プリント基板2を電池1に固定できない。このため、プリント基板を定位置に保持しながら、リード板を連結する必要があり、製造に手間がかかる。
【0006】
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、簡単かつ容易に、しかもしっかりとプリント基板を電池に連結しながら、小型にして軽量化できるパック電池を提供することにある。
また、本発明の他の大切な目的は、安価に能率よく多量生産できるパック電池を提供することにある。
【0007】
【課題を解決するための手段】
本発明のパック電池は、電池1とプリント基板2とを備える。電池1は、封口板4に電気的に接続して連結凸部6を設けている。この連結凸部6をプリント基板2に電気的に連結して、プリント基板2を電池1に連結している。
【0008】
連結凸部6は、半田付けして、あるいはスポット溶接してプリント基板2に連結することができる。封口板4は、好ましくは、周縁を外装缶5に気密に連結しているプレート部8と、このプレート部8から突出している凸部電極7とを備え、連結凸部6をプレート部8に設けて、連結凸部6と凸部電極7の両方をプリント基板2に連結することができる。さらに、封口板4は、凸部電極7をプレート部8に絶縁して固定して、凸部電極7とプレート部8とをそれぞれ+−の電極とすることができる。この構造のパック電池は、+−の電極である凸部電極7とプレート部8とを、直接にプリント基板2に連結するので、リードを省略して安価に多量生産できる。
【0009】
連結凸部6は、金属板である封口板4をプレス成形して設けることができる。さらに、連結凸部6は、封口板4に金属製の連結凸部6を溶着し、あるいは圧着して固定して設けることができる。
【0010】
プリント基板2は、好ましくは、連結凸部6を貫通させる貫通孔2Aを有し、この貫通孔2Aに連結凸部6の先端部に設けた挿通部6Aを挿通して連結することができる。連結凸部6は、プリント基板2の貫通孔2Aに挿通される挿通部6Aと、プリント基板2の下面を貫通孔2Aの周囲で支持する支持部6Bとを有する構造として、所定の位置に正確に連結できる。プリント基板2は、両端部に貫通孔2Aを設けて、この貫通孔2Aに挿通した連結凸部6を半田付けしてプリント基板2に連結し、さらに、プリント基板2の中央部分の下面を凸部電極7に連結して固定することができる。
【0011】
【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。
【0012】
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。
【0013】
図2ないし図10に示すパック電池は、電池1とプリント基板2をケース3に収納している。図のパック電池は、ひとつの電池1を備え、この電池1の封口板4に1枚のプリント基板2を固定している。ただ、本発明のパック電池は、複数の電池を備えることもある。複数の電池を内蔵するパック電池は、1枚ないし複数枚のプリント基板を有する。1枚のプリント基板と複数の電池を内蔵するパック電池は、1枚のプリント基板に複数の電池の封口板を連結して、プリント基板で電池を連結することができる。また、この電池は、1枚のプリント基板にひとつの電池を連結して、他の電池をリード板で連結することもできる。
【0014】
電池1は、リチウムイオン二次電池、ニッケル−水素電池、ニッケル−カドミウム電池等の二次電池である。図のパック電池は、薄型電池を内蔵する。この薄型電池1の封口板4に対向してプリント基板2を固定している。プリント基板2は、封口板4の外形にほぼ等しい外形としている。
【0015】
電池1は、外装缶5の開口部に封口板4を固定して、外装缶5を気密に閉塞している。封口板4は、レーザー溶接して外装缶5に固定され、あるいは図示しないが、カシメ加工して外装缶に気密に固定される。
【0016】
封口板4は、金属板で製作される。この封口板4は、プリント基板2を連結するための連結凸部6を有する。連結凸部6は、封口板4に電気的に接続される。連結凸部6がプリント基板2を定位置に固定すると共に、封口板4とプリント基板2を電気的に接続するためである。図2の電池1は、金属板である封口板4をプレス加工して連結凸部6を設けている。この構造は、封口板4をプレス加工して製作するときに、連結凸部6を一体構造に設けることができる。このため、この構造の封口板4は、簡単に、しかも能率よく連結凸部6のある封口板4を多量生産できる特長がある。図3と図4の電池1は、封口板4と連結凸部6を金属板で別々に製作している。図3の連結凸部6は、スポット溶接等の方法で溶接して固定される。図4の連結凸部6は、異なる金属板を積層構造とするクラッド材で製作される。この連結凸部6は、圧着して封口板4に固定される。これ等の構造は、従来の封口板4に連結凸部6を設けることができる。
【0017】
連結凸部6は、プリント基板2の貫通孔2Aに挿入される挿通部6Aと、プリント基板2の下面を貫通孔2Aの周囲で支持する支持部6Bとを有する。挿通部6Aは、貫通孔2Aの内形よりも細く、支持部6Bは、貫通孔2Aの内形よりも太くあるいは幅広くしている。この構造の連結凸部6は、プリント基板2の下面を支持部6Bに当接させて、プリント基板2と封口板4とを正確な距離で固定できる特長がある。挿通部6Aは、半田付けしてプリント基板2の導電部に固定される。
【0018】
ただ、連結凸部6は、必ずしも半田付けしてプリント基板2に連結されない。図5と図6に示すように、プリント基板2を弾性的に挟着して定位置に固定することもできる。この連結凸部6は、弾性金属プレートで製作される弾性挟着部6Cを有する。弾性挟着部6Cは、プリント基板2を連結すると共に、プリント基板2の導電部に電気的に接続される。この構造は、プリント基板2を半田付けすることなく、挟着して固定できる。
【0019】
図7と図8の連結凸部6は、プリント基板2を垂直の姿勢で封口板4に固定している。この連結凸部6は、水平方向に突出する挿通部6Aを有する。この連結凸部6は、挿通部6Aをプリント基板2の貫通孔2Aに入れ、プリント基板2を連結凸部6に当接させて垂直の姿勢として、定位置に固定できる。
【0020】
以上のパック電池は、プリント基板2の両端部分を連結凸部6で封口板4に連結している。この構造のパック電池は、プリント基板2をしっかりと電池1に固定できる特長がある。さらに、図2ないし図4のパック電池は、プリント基板2の両端部分を連結凸部6で封口板4に連結することに加えて、封口板4の凸部電極7をプリント基板2に連結している。凸部電極7は、スポット溶接してプリント基板2に固定している金属板9に連結され、あるいは半田付けしてプリント基板2の導電部に連結される。この構造は、さらにしっかりとプリント基板2を電池1に固定できる。図3と図4のパック電池は、凸部電極7に連結する金属板9をプリント基板2に半田付け等の方法で固定している。プリント基板2は、この金属板9と対向する位置に、スポット溶接用の電極を挿通する開口部2Bを貫通して設けている。
【0021】
電池1の凸部電極7をプリント基板2に連結する電池1は、封口板4をプレート部8と凸部電極7とで構成する。プレート部8は、その周縁をレーザー溶接やカシメ加工で外装缶5に気密に連結している。凸部電極7は、このプレート部8から突出するように設けられる。図の電池1は、凸部電極7をプレート部8に絶縁して固定して、凸部電極7とプレート部8とを+−の電極とする。この電池1は、封口板4のプレート部8を連結凸部6でプリント基板2に連結し、凸部電極7をプリント基板2に連結して、電池1の+−の電極をプリント基板2に連結しながら、プリント基板2を電池1にしっかりと固定できる。ただ、封口板は、凸部電極とプレート部とを同極の電極とすることもできる。この電池は、凸部電極とプレート部とをプリント基板に連結して、電池の一方の電極をプリント基板に連結する。電池の他方の電極は、リード板でプリント基板に連結する。
【0022】
プリント基板2は、電池1の保護回路を実現する保護回路部品10を実装する。保護回路部品10は、電池1の過充電や過放電を検出して電流を遮断する回路を実現する電子部品、過電流や電池温度で電流を遮断するブレーカ、PTC、ヒューズ等である。さらに、図のプリント基板2は、パック電池の出力端子11も固定している。また、連結凸部6の挿通部6Aを挿通する貫通孔2Aも開口している。貫通孔2Aは、連結凸部6の挿通部6Aを入れる位置に開口している。
【0023】
貫通孔2Aに連結凸部6の挿通部6Aを入れ、連結凸部6とプリント基板2とを半田付けして固定する構造は、挿通部6Aをプリント基板2の貫通孔2Aに入れて、プリント基板2を正確な位置に仮め止して連結できる。ただ、本発明のパック電池は、必ずしも連結凸部に挿通部を設けて、これを貫通孔に挿通してプリント基板と電池とを連結する必要はない。たとえば、図9に示すように、プリント基板2の下面に当接する接触面6Dを連結凸部6に設け、この連結凸部6の接触面6Dをリフロー半田してプリント基板2に固定することもできる。この図のパック電池は、連結凸部6の接触面6Dと凸部電極7の表面を、クリーム半田でプリント基板2の導電部に接着して仮止めし、この状態でリフロー半田して凸部電極7と連結凸部6とをプリント基板2に半田付けして固定している。
【0024】
さらに、図10に示すパック電池は、プリント基板2の下面に固定している金属板9を介して、連結凸部6の接触面6Dと凸部電極7をプリント基板2に連結している。プリント基板2は、金属板9と対向する位置に、スポット溶接用の電極を挿通する開口部2Bを貫通して設けている。この構造は、スポット溶接、あるいは半田付けして、プリント基板2に固定された金属板9を連結凸部6と凸部電極7とに連結して、しっかりとプリント基板2を電池1に固定できる。
【0025】
【発明の効果】
本発明のパック電池は、簡単かつ容易に、しかもしっかりとプリント基板を電池に連結しながら、小型にして軽量化できる特長がある。それは、本発明のパック電池が、電池の封口板に電気的に接続して連結凸部を設けており、この連結凸部をプリント基板に電気的に連結して、プリント基板を電池に連結しているからである。この構造のパック電池は、封口板の連結凸部を介してプリント基板を電池に連結するので、従来のように、ホルダーや接着材を使用することなく、簡単かつ容易に、しかも速やかにプリント基板を電池に連結できる。また、ホルダーを内蔵させることなくプリント基板を電池に連結するので、パック電池の外形を小さくして小型、軽量化ができると共に、プリント基板を定位置に仮り止めする工程を必要とせず、製造にかかる手間を極減できる。さらに、電池の封口板に設けた連結凸部にプリント基板を連結するので、プリント基板を電池に対してしっかりと連結できる特長もある。
【0026】
さらに、本発明のパック電池は、連結凸部を封口板に電気的に接続すると共に、プリント基板に電気的に連結しているので、この連結凸部をリードに併用して、電池をプリント基板に電気接続できる。このため、部品点数を減らすと共に、製造にかかる手間を減して安価に能率よく多量生産できる。さらにまた、リードを使用することなく電池をプリント基板に電気接続するので、リードの接触不良による弊害を有効に防止できる特長もある。
【図面の簡単な説明】
【図1】従来のパック電池の概略断面図
【図2】本発明の実施例のパック電池の一部断面正面図
【図3】本発明の他の実施例のパック電池の一部断面正面図
【図4】本発明の他の実施例のパック電池の一部断面正面図
【図5】本発明の他の実施例のパック電池の正面図
【図6】図5に示すパック電池の側面図
【図7】本発明の他の実施例のパック電池の正面図
【図8】図7に示すパック電池のA−A線断面斜視図
【図9】本発明の他の実施例のパック電池の正面図
【図10】本発明の他の実施例のパック電池の一部断面正面図
【符号の説明】
1…電池
2…プリント基板 2A…貫通孔 2B…開口部
3…ケース
4…封口板
5…外装缶
6…連結凸部 6A…挿通部 6B…支持部
6C…弾性挟着部 6D…接触面
7…凸部電極
8…プレート部
9…金属板
10…保護回路部品
11…出力端子
12…ホルダー
13…リード板
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a battery pack, and more particularly, to a battery pack incorporating a printed circuit board.
[0002]
[Prior art]
A battery pack with a built-in protection circuit can be used with peace of mind while preventing overcharge and overdischarge of the battery. This is because the protection circuit detects overcharge or overdischarge and cuts off the battery current. This battery pack incorporates a printed circuit board on which a protection circuit component is mounted. The printed circuit board is fixed at a predetermined position in order to prevent adverse effects such as short-circuiting due to contact with the battery. As shown in FIG. 1, the conventional battery pack holds a printed circuit board 2 in a fixed position by a holder 12. The holder 12 is manufactured by molding plastic. In order to hold the printed circuit board 2 in a fixed position, the holder 12 is formed with a concave part or a convex part into which the printed circuit board 2 can be inserted. The printed circuit board 2 supported at a fixed position by the holder 12 is connected to the battery 1 via the lead plate 13. One end of the lead plate 13 is connected to the battery 1 by spot welding, and the other end is connected to the printed circuit board 2 by soldering. The printed circuit board 2 is connected to the battery by a plurality of lead plates 13 in order to prevent the entire positional deviation.
[0003]
[Problems to be solved by the invention]
By the way, the battery pack is required to be as small as possible without reducing the charge capacity. To meet this need, batteries struggle to increase capacity per volume. However, like a battery, a battery pack is required to have a larger capacity per volume. Incorporating the holder from this requirement causes an increase in the volume of the battery pack. In particular, the holder that holds the printed circuit board firmly in place needs to be molded thick in plastic. This increases the ratio of the holder with respect to the inner volume of the battery pack, thereby increasing the outer shape of the battery pack. Furthermore, the holder also causes an increase in the weight of the battery pack, and an adverse effect for reducing the weight of the battery pack.
[0004]
The printed circuit board can be bonded and fixed to the battery without using a holder. However, this structure does not fix the printed circuit board to the battery until the adhesive is cured. For this reason, it is necessary to hold the printed circuit board and the battery in place until the adhesive is cured. The curing time of the adhesive that bonds the printed circuit board to the battery is a few minutes. Therefore, the adhesive cannot quickly connect the printed circuit board to the battery, making it difficult to efficiently mass-produce. Further, like the holder, the adhesive occupies a part of the internal volume of the battery pack, which causes the battery pack to be large and heavy.
[0005]
Further, the battery pack shown in FIG. 1 is laborious to manufacture because the lead plate 13 is connected in a state where the printed circuit board 2 is temporarily fixed in place by the holder 12, and the manufacturing cost is also increased. Until the lead plate 13 is connected to both the printed board 2 and the battery 1, the lead board 13 cannot fix the printed board 2 to the battery 1. For this reason, it is necessary to connect the lead plates while holding the printed circuit board in a fixed position, which takes time and labor.
[0006]
The present invention has been developed for the purpose of solving such drawbacks. An important object of the present invention is to provide a battery pack that can be reduced in size and weight while easily and securely connecting a printed circuit board to the battery.
Another important object of the present invention is to provide a battery pack that can be mass-produced efficiently at low cost.
[0007]
[Means for Solving the Problems]
The battery pack of the present invention includes a battery 1 and a printed circuit board 2. The battery 1 is electrically connected to the sealing plate 4 and provided with a connecting convex portion 6. The connecting projection 6 is electrically connected to the printed circuit board 2 to connect the printed circuit board 2 to the battery 1.
[0008]
The connecting projection 6 can be connected to the printed circuit board 2 by soldering or spot welding. The sealing plate 4 preferably includes a plate portion 8 whose periphery is airtightly connected to the outer can 5, and a convex electrode 7 protruding from the plate portion 8, and the connecting convex portion 6 is attached to the plate portion 8. By providing, both the connection convex part 6 and the convex electrode 7 can be connected to the printed circuit board 2. Further, the sealing plate 4 can insulate and fix the convex electrode 7 to the plate portion 8 so that the convex electrode 7 and the plate portion 8 can be respectively +-electrodes. In the battery pack having this structure, the convex electrode 7 and the plate portion 8 which are + and − electrodes are directly connected to the printed circuit board 2, so that leads can be omitted and mass production can be performed at low cost.
[0009]
The connection convex part 6 can be provided by press-molding the sealing plate 4 which is a metal plate. Furthermore, the connection convex part 6 can be provided by welding the metal connection convex part 6 to the sealing plate 4 or by pressure bonding.
[0010]
The printed circuit board 2 preferably has a through hole 2A that allows the connecting convex portion 6 to pass therethrough, and can be connected to the through hole 2A by inserting an insertion portion 6A provided at the tip of the connecting convex portion 6. The connecting convex portion 6 has a structure having an insertion portion 6A that is inserted into the through hole 2A of the printed board 2 and a support portion 6B that supports the lower surface of the printed board 2 around the through hole 2A. Can be linked. The printed circuit board 2 is provided with through holes 2A at both ends, and the connecting projections 6 inserted into the through holes 2A are soldered to be connected to the printed circuit board 2, and the lower surface of the central portion of the printed circuit board 2 is further projected. It can be connected and fixed to the partial electrode 7.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. However, the example shown below illustrates the battery pack for embodying the technical idea of the present invention, and the present invention does not specify the battery pack as follows.
[0012]
Further, in this specification, in order to facilitate understanding of the scope of claims, the numbers corresponding to the members shown in the examples are referred to as “the scope of claims” and “the means for solving the problems”. It is added to the member shown by. However, the members shown in the claims are not limited to the members in the embodiments.
[0013]
In the battery pack shown in FIGS. 2 to 10, the battery 1 and the printed board 2 are housed in a case 3. The battery pack shown in the figure includes one battery 1, and one printed circuit board 2 is fixed to a sealing plate 4 of the battery 1. However, the battery pack of the present invention may include a plurality of batteries. A battery pack incorporating a plurality of batteries has one or more printed circuit boards. A battery pack including a single printed circuit board and a plurality of batteries can be connected to the printed circuit board by connecting a plurality of battery sealing plates to the single printed circuit board. Moreover, this battery can also connect one battery to one printed circuit board, and can connect another battery with a lead board.
[0014]
The battery 1 is a secondary battery such as a lithium ion secondary battery, a nickel-hydrogen battery, or a nickel-cadmium battery. The battery pack shown in the figure incorporates a thin battery. The printed circuit board 2 is fixed facing the sealing plate 4 of the thin battery 1. The printed circuit board 2 has an outer shape substantially equal to the outer shape of the sealing plate 4.
[0015]
In the battery 1, the sealing plate 4 is fixed to the opening of the outer can 5, and the outer can 5 is airtightly closed. The sealing plate 4 is laser-welded and fixed to the outer can 5 or, although not shown, is caulked and airtightly fixed to the outer can.
[0016]
The sealing plate 4 is made of a metal plate. The sealing plate 4 has a connecting projection 6 for connecting the printed circuit board 2. The connecting convex portion 6 is electrically connected to the sealing plate 4. This is because the connecting convex portion 6 fixes the printed circuit board 2 in a fixed position and electrically connects the sealing plate 4 and the printed circuit board 2. The battery 1 in FIG. 2 is provided with a connecting projection 6 by pressing a sealing plate 4 that is a metal plate. In this structure, when the sealing plate 4 is manufactured by pressing, the connecting convex portion 6 can be provided in an integral structure. For this reason, the sealing plate 4 having this structure has a feature that the sealing plate 4 having the connecting convex portions 6 can be mass-produced easily and efficiently. In the battery 1 of FIGS. 3 and 4, the sealing plate 4 and the connecting projection 6 are separately manufactured from metal plates. 3 is fixed by welding by a method such as spot welding. The connection convex part 6 of FIG. 4 is manufactured with the clad material which makes a different metal plate a laminated structure. The connecting projection 6 is fixed to the sealing plate 4 by pressure bonding. These structures can provide the connection convex part 6 in the conventional sealing board 4. FIG.
[0017]
The connecting convex part 6 has an insertion part 6A inserted into the through hole 2A of the printed board 2 and a support part 6B that supports the lower surface of the printed board 2 around the through hole 2A. The insertion portion 6A is thinner than the inner shape of the through hole 2A, and the support portion 6B is thicker or wider than the inner shape of the through hole 2A. The connecting convex portion 6 having this structure has an advantage that the printed circuit board 2 and the sealing plate 4 can be fixed at an accurate distance by bringing the lower surface of the printed circuit board 2 into contact with the support section 6B. The insertion portion 6A is fixed to the conductive portion of the printed board 2 by soldering.
[0018]
However, the connecting projection 6 is not necessarily connected to the printed circuit board 2 by soldering. As shown in FIGS. 5 and 6, the printed circuit board 2 can be elastically clamped and fixed in place. This connection convex part 6 has the elastic clamping part 6C manufactured with an elastic metal plate. The elastic clamping portion 6C connects the printed circuit board 2 and is electrically connected to the conductive portion of the printed circuit board 2. This structure can be clamped and fixed without soldering the printed circuit board 2.
[0019]
7 and 8 fixes the printed circuit board 2 to the sealing plate 4 in a vertical posture. This connection convex part 6 has 6 A of insertion parts which protrude in a horizontal direction. The connecting convex portion 6 can be fixed at a fixed position in a vertical posture by inserting the insertion portion 6A into the through hole 2A of the printed circuit board 2 and bringing the printed circuit board 2 into contact with the connecting convex portion 6.
[0020]
In the above battery pack, both end portions of the printed circuit board 2 are connected to the sealing plate 4 by the connecting projections 6. The battery pack having this structure has a feature that the printed circuit board 2 can be firmly fixed to the battery 1. Further, in the battery pack of FIGS. 2 to 4, in addition to connecting both end portions of the printed circuit board 2 to the sealing plate 4 with the connection convex portions 6, the convex electrode 7 of the sealing plate 4 is connected to the printed circuit board 2. ing. The convex electrode 7 is connected to the metal plate 9 fixed to the printed circuit board 2 by spot welding, or is connected to the conductive part of the printed circuit board 2 by soldering. This structure can more firmly fix the printed circuit board 2 to the battery 1. 3 and FIG. 4, the metal plate 9 connected to the convex electrode 7 is fixed to the printed circuit board 2 by a method such as soldering. The printed circuit board 2 is provided at a position facing the metal plate 9 so as to penetrate through an opening 2B through which an electrode for spot welding is inserted.
[0021]
In the battery 1 that connects the convex electrode 7 of the battery 1 to the printed circuit board 2, the sealing plate 4 is composed of the plate portion 8 and the convex electrode 7. The periphery of the plate portion 8 is airtightly connected to the outer can 5 by laser welding or caulking. The convex electrode 7 is provided so as to protrude from the plate portion 8. In the illustrated battery 1, the convex electrode 7 is insulated and fixed to the plate portion 8, and the convex electrode 7 and the plate portion 8 serve as + − electrodes. In this battery 1, the plate part 8 of the sealing plate 4 is connected to the printed circuit board 2 by the connection convex part 6, the convex electrode 7 is connected to the printed circuit board 2, and the + and − electrodes of the battery 1 are connected to the printed circuit board 2. The printed circuit board 2 can be firmly fixed to the battery 1 while being connected. However, the sealing plate can also use a convex electrode and a plate part as electrodes having the same polarity. In this battery, a convex electrode and a plate part are connected to a printed circuit board, and one electrode of the battery is connected to the printed circuit board. The other electrode of the battery is connected to the printed board with a lead plate.
[0022]
The printed circuit board 2 mounts a protection circuit component 10 that realizes a protection circuit for the battery 1. The protection circuit component 10 is an electronic component that realizes a circuit that cuts off the current by detecting overcharge or overdischarge of the battery 1, a breaker, a PTC, a fuse, or the like that cuts off the current due to overcurrent or battery temperature. Further, the printed circuit board 2 in the figure also fixes the output terminal 11 of the battery pack. In addition, a through hole 2 </ b> A through which the insertion part 6 </ b> A of the connecting convex part 6 is inserted is also opened. 2 A of through-holes are opened in the position which inserts the insertion part 6A of the connection convex part 6. FIG.
[0023]
The structure in which the insertion portion 6A of the connecting convex portion 6 is inserted into the through hole 2A and the connecting convex portion 6 and the printed circuit board 2 are fixed by soldering is obtained by inserting the insertion portion 6A into the through hole 2A of the printed circuit board 2 and printing. The board | substrate 2 can be temporarily clamped in the exact position and can be connected. However, in the battery pack of the present invention, it is not always necessary to provide the insertion portion on the connection convex portion and insert the insertion portion into the through hole to connect the printed circuit board and the battery. For example, as shown in FIG. 9, a contact surface 6 </ b> D that contacts the lower surface of the printed circuit board 2 may be provided on the connection convex portion 6, and the contact surface 6 </ b> D of the connection convex portion 6 may be fixed to the printed circuit board 2 by reflow soldering. it can. In the battery pack of this figure, the contact surface 6D of the connecting convex portion 6 and the surface of the convex electrode 7 are temporarily fixed by adhering to the conductive portion of the printed circuit board 2 with cream solder, and in this state, reflow soldering is performed. The electrode 7 and the connecting projection 6 are fixed to the printed circuit board 2 by soldering.
[0024]
Further, the battery pack shown in FIG. 10 connects the contact surface 6 </ b> D of the connecting convex portion 6 and the convex electrode 7 to the printed circuit board 2 through a metal plate 9 fixed to the lower surface of the printed circuit board 2. The printed circuit board 2 is provided at a position facing the metal plate 9 so as to penetrate through an opening 2B through which an electrode for spot welding is inserted. This structure can fix the printed circuit board 2 firmly to the battery 1 by connecting the metal plate 9 fixed to the printed circuit board 2 to the connection convex part 6 and the convex electrode 7 by spot welding or soldering. .
[0025]
【The invention's effect】
The battery pack according to the present invention has a feature that it can be reduced in size and weight while easily and securely connecting a printed circuit board to the battery. That is, the battery pack of the present invention is electrically connected to the battery sealing plate to provide a connecting projection, and the connecting projection is electrically connected to the printed circuit board to connect the printed circuit board to the battery. Because. The battery pack with this structure connects the printed circuit board to the battery via the connecting projections of the sealing plate, so that it is simple, easy and quick without using a holder or adhesive as in the past. Can be connected to the battery. In addition, since the printed circuit board is connected to the battery without having a built-in holder, the outer shape of the battery pack can be reduced to make it smaller and lighter, and the process of temporarily securing the printed circuit board in place is not required. Such labor can be reduced extremely. Furthermore, since the printed circuit board is connected to the connecting projection provided on the sealing plate of the battery, there is an advantage that the printed circuit board can be firmly connected to the battery.
[0026]
Furthermore, the battery pack according to the present invention electrically connects the connecting projections to the sealing plate and is also electrically connected to the printed circuit board. Can be electrically connected. For this reason, the number of parts can be reduced, and the labor for manufacturing can be reduced, so that mass production can be efficiently performed at low cost. Furthermore, since the battery is electrically connected to the printed circuit board without using the leads, there is also a feature that it is possible to effectively prevent the adverse effects caused by the poor contact of the leads.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of a conventional battery pack. FIG. 2 is a partial cross-sectional front view of a battery pack according to an embodiment of the invention. FIG. 3 is a partial cross-sectional front view of a battery pack according to another embodiment of the invention. 4 is a partially sectional front view of a battery pack according to another embodiment of the present invention. FIG. 5 is a front view of a battery pack according to another embodiment of the present invention. FIG. 6 is a side view of the battery pack shown in FIG. 7 is a front view of a battery pack according to another embodiment of the present invention. FIG. 8 is a cross-sectional perspective view taken along line AA of the battery pack shown in FIG. 7. FIG. Front view [FIG. 10] Partial cross-sectional front view of a battery pack according to another embodiment of the present invention [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Battery 2 ... Printed circuit board 2A ... Through-hole 2B ... Opening part 3 ... Case 4 ... Sealing plate 5 ... Exterior can 6 ... Connection convex part 6A ... Insertion part 6B ... Support part 6C ... Elastic clamping part 6D ... Contact surface 7 ... convex electrode 8 ... plate part 9 ... metal plate 10 ... protective circuit component 11 ... output terminal 12 ... holder 13 ... lead plate

Claims (10)

電池(1)とプリント基板(2)とを備えるパック電池であって、電池(1)の封口板(4)に電気的に接続して連結凸部(6)を設けており、この連結凸部(6)をプリント基板(2)に電気的に連結して、プリント基板(2)を電池(1)に連結しているパック電池。A battery pack comprising a battery (1) and a printed circuit board (2), wherein a connecting projection (6) is provided in electrical connection with the sealing plate (4) of the battery (1). A battery pack in which the part (6) is electrically connected to the printed circuit board (2) and the printed circuit board (2) is connected to the battery (1). 連結凸部(6)を半田付けしてプリント基板(2)に連結している請求項1に記載されるパック電池。The battery pack according to claim 1, wherein the connecting projections (6) are soldered and connected to the printed circuit board (2). 連結凸部(6)をスポット溶接してプリント基板(2)に連結している請求項1に記載されるパック電池。The battery pack according to claim 1, wherein the connecting projections (6) are spot-welded and connected to the printed circuit board (2). 封口板(4)が、周縁を外装缶(5)に気密に連結しているプレート部(8)と、このプレート部(8)から突出している凸部電極(7)を有し、連結凸部(6)をプレート部(8)に設けて、連結凸部(6)と凸部電極(7)の両方をプリント基板(2)に連結している請求項1に記載されるパック電池。The sealing plate (4) has a plate portion (8) whose periphery is airtightly connected to the outer can (5), and a convex electrode (7) protruding from the plate portion (8). 2. The battery pack according to claim 1, wherein the portion (6) is provided on the plate portion (8), and both the connecting protrusion (6) and the protruding electrode (7) are connected to the printed circuit board (2). 凸部電極(7)がプレート部(8)に絶縁して固定されており、凸部電極(7)とプレート部(8)とをそれぞれ+−の電極としている請求項4に記載されるパック電池。5. The pack according to claim 4, wherein the convex electrode (7) is insulated and fixed to the plate portion (8), and the convex electrode (7) and the plate portion (8) are respectively +-electrodes. battery. 金属板をプレス成形して封口板(4)に連結凸部(6)を設けている請求項1に記載されるパック電池。The battery pack according to claim 1, wherein the connecting plate (4) is provided on the sealing plate (4) by press-molding a metal plate. 封口板(4)に金属製の連結凸部(6)を溶着し、あるいは圧着して固定している請求項1に記載されるパック電池。The battery pack according to claim 1, wherein a metal connection convex portion (6) is welded to the sealing plate (4) or is fixed by pressure bonding. プリント基板(2)が連結凸部(6)を貫通させる貫通孔(2A)を有し、この貫通孔(2A)に連結凸部(6)の先端部に設けた挿通部(6A)を挿通して連結している請求項1に記載されるパック電池。The printed circuit board (2) has a through hole (2A) that penetrates the connecting convex portion (6), and the insertion portion (6A) provided at the tip of the connecting convex portion (6) is inserted into the through hole (2A). The battery pack according to claim 1, wherein the battery packs are connected together. 連結凸部(6)が、プリント基板(2)の貫通孔(2A)に挿通される挿通部(6A)と、プリント基板(2)の下面を貫通孔(2A)の周囲で支持する支持部(6B)とを有する請求項8に記載されるパック電池。The connecting convex part (6) is inserted through the through hole (2A) of the printed circuit board (2), and the support part supports the lower surface of the printed circuit board (2) around the through hole (2A). The battery pack according to claim 8 having (6B). プリント基板(2)が両端部に貫通孔(2A)を有し、この貫通孔(2A)に挿通した連結凸部(6)を半田付けしてプリント基板(2)に連結しており、さらに、プリント基板(2)の中央部分の下面を凸部電極(7)に連結して固定している請求項8に記載されるパック電池。The printed circuit board (2) has through holes (2A) at both ends, and is connected to the printed circuit board (2) by soldering the connecting protrusions (6) inserted through the through holes (2A). The battery pack according to claim 8, wherein the lower surface of the central portion of the printed circuit board (2) is connected and fixed to the convex electrode (7).
JP2001097747A 2001-03-29 2001-03-29 Pack battery Expired - Fee Related JP3653475B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001097747A JP3653475B2 (en) 2001-03-29 2001-03-29 Pack battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001097747A JP3653475B2 (en) 2001-03-29 2001-03-29 Pack battery

Publications (2)

Publication Number Publication Date
JP2002298809A JP2002298809A (en) 2002-10-11
JP3653475B2 true JP3653475B2 (en) 2005-05-25

Family

ID=18951488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001097747A Expired - Fee Related JP3653475B2 (en) 2001-03-29 2001-03-29 Pack battery

Country Status (1)

Country Link
JP (1) JP3653475B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107396585A (en) * 2016-05-17 2017-11-24 三菱电机株式会社 Electronic-controlled installation

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3922281B2 (en) * 2003-11-14 2007-05-30 ソニー株式会社 Battery pack and battery pack manufacturing method
WO2005078825A1 (en) * 2004-02-13 2005-08-25 Lg Chem, Ltd. Battery pack of improved structure
EP1716608B1 (en) * 2004-02-18 2014-05-14 LG Chem Ltd. Integral cap assembly containing protection circuit board and secondary battery comprising the same
KR100571247B1 (en) * 2004-10-18 2006-04-13 삼성에스디아이 주식회사 Lithium ion secondary battery
JP4778699B2 (en) * 2004-10-27 2011-09-21 パナソニック株式会社 Battery pack
JP4837278B2 (en) * 2004-12-02 2011-12-14 パナソニック株式会社 Battery pack
JP4837296B2 (en) * 2004-10-27 2011-12-14 パナソニック株式会社 Battery pack
US7622219B2 (en) 2004-10-27 2009-11-24 Panasonic Corporation Battery pack
JP4837294B2 (en) * 2005-02-28 2011-12-14 パナソニック株式会社 Battery pack
CN2772044Y (en) * 2004-11-18 2006-04-12 比亚迪股份有限公司 Lithium ion secondary cell
KR100670501B1 (en) 2005-05-04 2007-01-16 삼성에스디아이 주식회사 Secondary battery
JP5089314B2 (en) * 2007-10-01 2012-12-05 株式会社リコー Secondary battery protection circuit module
KR100973313B1 (en) 2008-03-28 2010-07-30 삼성에스디아이 주식회사 Protection circuit board and battery pack using the same
US8632910B2 (en) * 2008-09-03 2014-01-21 Samsung Sdi Co., Ltd. Protection circuit board, secondary battery and battery pack
JP5362424B2 (en) * 2009-04-21 2013-12-11 日立マクセル株式会社 Battery pack
FR2981536B1 (en) * 2011-10-12 2014-05-16 Bilal Manai ASSEMBLY OF A BATTERY ASSEMBLY
EP4336638A1 (en) * 2021-07-19 2024-03-13 LG Energy Solution, Ltd. Cell assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107396585A (en) * 2016-05-17 2017-11-24 三菱电机株式会社 Electronic-controlled installation
CN107396585B (en) * 2016-05-17 2020-04-28 三菱电机株式会社 Electronic control device

Also Published As

Publication number Publication date
JP2002298809A (en) 2002-10-11

Similar Documents

Publication Publication Date Title
JP3653475B2 (en) Pack battery
EP1715534B1 (en) Battery pack of improved structure
JP5068544B2 (en) Integrated type cap assembly including a protection circuit board and a secondary battery including the same
EP1760804B1 (en) No-welding contact type secondary battery
JP4903151B2 (en) Cap assembly molded article and secondary battery including the same
US7622219B2 (en) Battery pack
US7537720B2 (en) PCM mold and battery having the same
KR100824873B1 (en) Lithium Ion Secondary Battery
KR101001315B1 (en) Secondary Battery Pack Having Excellent Energy Density and PCM Assembly therefor
KR101371364B1 (en) Top Cap Assembly Comprising Terminal Block
KR101441524B1 (en) Secondary Battery of Novel Structure
JP4837294B2 (en) Battery pack
KR20080045946A (en) Secondary battery having protecting circuit module
JP2011507181A (en) Secondary battery pack having PCM assembly and insulative mounting member of novel structure
US8715842B2 (en) Battery pack
JP4837296B2 (en) Battery pack
JP3766001B2 (en) Battery and manufacturing method thereof
JP4837278B2 (en) Battery pack
JP3754335B2 (en) Pack battery and manufacturing method thereof
KR20090055699A (en) Secondary battery pack having pcm assembly of novel structure
JP2007200630A (en) Battery pack, its assembling method, and portable electronic appliance using it
JP3806696B2 (en) Pack battery
KR20040062914A (en) Manufacture Process of lithium ion polymer cell Battery pack that hook type
KR101749718B1 (en) Secondary Battery Pack Plated with Welding Metal
JP3939018B2 (en) Pack battery

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050216

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050222

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050228

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090304

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100304

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110304

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110304

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130304

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140304

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees