JP5076762B2 - Square battery with terminal - Google Patents

Square battery with terminal Download PDF

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JP5076762B2
JP5076762B2 JP2007236165A JP2007236165A JP5076762B2 JP 5076762 B2 JP5076762 B2 JP 5076762B2 JP 2007236165 A JP2007236165 A JP 2007236165A JP 2007236165 A JP2007236165 A JP 2007236165A JP 5076762 B2 JP5076762 B2 JP 5076762B2
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electrode
case
battery
rivet
output terminal
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JP2009070639A (en
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知一 三田村
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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    • 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

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Description

本発明は、電極リベットに出力端子を接合した端子付角型電池の端子形状に関するものである。   The present invention relates to a terminal shape of a terminal-equipped rectangular battery in which an output terminal is joined to an electrode rivet.

携帯用電子機器の電源として用いられる角型電池において、機器と電池の電気的接続方法としては、携帯電話のリチウムイオン電池パックに見られるように角型二次電池を樹脂ケースに内蔵し、電池パックの出力端子と機器側の端子とを接触させるものが一般的であった。   In a prismatic battery used as a power source for portable electronic devices, the electrical connection method between the device and the battery is as follows. In general, the output terminal of the pack is brought into contact with the terminal on the device side.

接触よりも信頼性のある方法としては、角型電池の両極に端子を溶接して、これらの端子を機器側の回路基板等に直接半田付けする方法が考えられる。円筒型電池の両極に端子を溶接した例としては特許文献1に開示されたような例があるが、これまでに角型電池の両端に端子を溶接した例は報告されていない。   As a method that is more reliable than contact, a method is conceivable in which terminals are welded to both poles of a square battery, and these terminals are directly soldered to a circuit board or the like on the device side. As an example in which terminals are welded to both poles of a cylindrical battery, there is an example as disclosed in Patent Document 1, but no examples have been reported so far in which terminals are welded to both ends of a prismatic battery.

一般に角型電池においては、特許文献2に開示されているように、一方の極性端子は電極リベットであり、もう一方の極性端子は金属ケースである。電極リベットは、金属製ケースの開口部を閉塞している金属製の封口板に絶縁性のガスケットを挟着し、かつ封口板の電極孔を貫通して絶縁状態にカシメ構造で固定されている。
特開2003−115292号公報 特開2004−303739号公報
In general, in a prismatic battery, as disclosed in Patent Document 2, one polarity terminal is an electrode rivet and the other polarity terminal is a metal case. The electrode rivet has an insulating gasket sandwiched between a metal sealing plate that closes the opening of the metal case, and is fixed in an insulated state through an electrode hole of the sealing plate. .
JP 2003-115292 A JP 2004-303739 A

特許文献2に示されるような角型電池に出力端子を溶接する場合、図4に示すように電極リベットと金属ケースに溶接することになる。金属ケースに出力端子を溶接した場合には、特に新たな課題は発生しなかったが、電極リベットに従来の出力端子を溶接した場合に課題が生じることがわかった。すなわち、落下などによって出力端子に外力が加わり、出力端子を溶接した電池リベットのヘッド部に回転トルクが加わったときに、図5に示すように回転方向にズレを生じ出力端子先端の位置が回路基板のスルーホールと合わなくなり、回路基板実装に支障をきたすという欠点があった。また、電極リベットが無理に回転することにより、電極リベットとガスケットの密着界面が擦れてガスケットに損傷を与え、電池の耐漏液性能が劣化するという欠点もあった。   When the output terminal is welded to a rectangular battery as shown in Patent Document 2, it is welded to an electrode rivet and a metal case as shown in FIG. When the output terminal is welded to the metal case, no new problem has occurred, but it has been found that the problem occurs when the conventional output terminal is welded to the electrode rivet. That is, when an external force is applied to the output terminal due to dropping or the like, and a rotational torque is applied to the head portion of the battery rivet welded to the output terminal, a deviation occurs in the rotational direction as shown in FIG. There is a disadvantage that it is not aligned with the through-hole of the board, which hinders circuit board mounting. In addition, when the electrode rivet is forcibly rotated, the adhesion interface between the electrode rivet and the gasket is rubbed to damage the gasket, and the leakage resistance performance of the battery is deteriorated.

前記課題を解決するために、本発明は、金属製ケースと、このケースの開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板と、この封口板に絶縁性のガスケットを挟着し、かつ封口板の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベットと、ケースに内蔵されており、正負極いずれかの電極板を電極リベットに接続している電極群とを備える角型電池において、前記電極リベットに接合される出力端子を備え、この出力端子が電極リベットに接合される平板部とこの平板部より延出する延出部よりなり、且つ前記延出部に絶縁材を介して電池のケースの側面に当接する爪部を形成したものである。   In order to solve the above problems, the present invention provides a metal case, a metal sealing plate whose peripheral edge is welded to the opening of the case to close the case opening, and an insulating property to the sealing plate. An electrode rivet that sandwiches the gasket of the sealing plate and penetrates the electrode hole of the sealing plate and is fixed in a crimped structure in an insulated state, and is connected to either the positive or negative electrode plate to the electrode rivet. A prismatic battery including an electrode group, and an output terminal joined to the electrode rivet, the output terminal comprising a flat plate portion joined to the electrode rivet and an extending portion extending from the flat plate portion. And the nail | claw part which contact | abuts to the side surface of the case of a battery via an insulating material is formed in the said extension part.

このことにより、前記爪部が角型電池のケースの側面に当接しているため、電極リベットのヘッドの回転方向のズレのストッパーとして作用し、落下などによる外力が加わっても電極リベットの回転方向のズレを防止できる。   As a result, since the claw portion is in contact with the side surface of the case of the rectangular battery, it acts as a stopper for the displacement of the head direction of the electrode rivet, and the rotation direction of the electrode rivet even when an external force due to dropping or the like is applied Can be prevented.

また、前記課題を解決するための第二の手段として、本発明は、金属製ケースと、このケースの開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板と、この封口板に絶縁性のガスケットを挟着し、かつ封口板の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベットと、ケースに内蔵されており、正負極いずれかの電極板を電極リベットに接続している電極群とを備える角型電池において、前記電極リベットに接合される出力端子を備え、この出力端子が電極リベットに接合される平板部とこの平板部より延出する延出部よりなり、前記延出部に絶縁材を介して電池のケースの側面に当接する屈曲部またはクランク形屈曲部を形成したものである。   Further, as a second means for solving the above problems, the present invention includes a metal case, and a metal sealing plate whose peripheral edge is welded to the opening of the case to close the opening of the case. In addition, an insulating gasket is sandwiched between the sealing plate and an electrode rivet that penetrates through the electrode hole of the sealing plate and is fixed in an insulated state with a caulking structure; A prismatic battery comprising an electrode group connecting an electrode plate to an electrode rivet, comprising an output terminal joined to the electrode rivet, the output terminal being joined to the electrode rivet, and extending from the flat plate part A bent portion or a crank-shaped bent portion that is in contact with the side surface of the battery case via an insulating material is formed on the extended portion.

このことにより、前記屈曲部またはクランク形屈曲部が角型電池のケースの側面に当接しているため、電極リベットのヘッドの回転方向のズレのストッパーとして作用し、落下などによる外力が加わっても電極リベットの回転方向のズレを防止できる。   As a result, the bent portion or the crank-shaped bent portion is in contact with the side surface of the case of the rectangular battery, so that it acts as a stopper for the displacement of the head of the electrode rivet in the rotational direction, and an external force due to dropping or the like is applied. It is possible to prevent displacement of the electrode rivet in the rotational direction.

本発明によると、前記爪部または屈曲部またはクランク形屈曲部が角型電池のケースの側面に当接しているため、電極リベットのヘッド回転方向のズレのストッパーとして作用する。通常、電極リベットのヘッドよりも出力端子の方が大きいため、落下などによる外力が出力端子に加わった場合に、比較的小さな外力でも回転半径の差から電極リベットの中心部には大きなトルクが加わる。この時、前記爪部または屈曲部またはクランク形屈曲部が出力端子に設けられているので外力が加わる位置と回転半径に殆ど差がない位置で回転のズレを阻止することができる。   According to the present invention, the claw portion, the bent portion, or the crank-shaped bent portion is in contact with the side surface of the case of the rectangular battery, and thus acts as a stopper for deviation of the electrode rivet in the head rotation direction. Normally, the output terminal is larger than the electrode rivet head, so when an external force due to dropping or the like is applied to the output terminal, a large torque is applied to the center portion of the electrode rivet due to the difference in rotational radius even with a relatively small external force . At this time, since the claw portion, the bent portion, or the crank-shaped bent portion is provided on the output terminal, it is possible to prevent the rotational deviation at the position where the external force is applied and the position where there is almost no difference in the rotation radius.

本発明は、上記のように角型電池の電極リベットに接合される出力端子の延出部に、絶縁材を介して電池のケースの側面に当接する爪部または屈曲部またはクランク形屈曲部を形成することにより、電極リベットのヘッドの回転方向のズレのストッパーとして作用することを見出したものである。   According to the present invention, a claw portion, a bent portion, or a crank-shaped bent portion that abuts the side surface of the battery case via an insulating material is provided on the extended portion of the output terminal joined to the electrode rivet of the rectangular battery as described above. It has been found that, when formed, it acts as a stopper for displacement in the rotational direction of the head of the electrode rivet.

また、電極リベットの中心を回転軸として時計回りあるいは反時計回りの回転の両方を止めるため、爪部または屈曲部またはクランク形屈曲部を回転軸に対してほぼ対称に形成することが好ましい。   Further, in order to stop both clockwise or counterclockwise rotation with the center of the electrode rivet as the rotation axis, it is preferable to form the claw portion, the bent portion or the crank-shaped bent portion substantially symmetrically with respect to the rotation axis.

以下、本発明の実施の形態を、図面を参照しながら説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(実施例1)
図1は本発明の一実施例に係る端子付角型電池の外観図である。角型電池1の金属製ケース2の開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板3の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベット4に溶接されたステンレス製の出力端子5において、電極リベットに接合される平板部5aとこの平板部より延出する延出部5b及び5cよりなり、延出部5bは基板へ半田付けされる接合部となり、且つ前記延出部5cは、アラミド紙よりなる絶縁材6を介して電池のケース2の側面に当接する爪部を形成している。
Example 1
FIG. 1 is an external view of a prismatic battery with terminals according to an embodiment of the present invention. The peripheral edge is welded to the opening of the metal case 2 of the prismatic battery 1 and passes through the electrode hole of the metal sealing plate 3 that closes the opening of the case, and is fixed in an insulated state with a crimped structure. The stainless steel output terminal 5 welded to the electrode rivet 4 comprises a flat plate portion 5a joined to the electrode rivet and extending portions 5b and 5c extending from the flat plate portion, and the extended portion 5b is soldered to the substrate. The extension portion 5c forms a claw portion that comes into contact with the side surface of the battery case 2 via an insulating material 6 made of aramid paper.

(実施例2)
図2は、本発明の一実施例に係る端子付角型電池の外観図である。角型電池1の金属製ケース2の開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板3の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベット4に溶接された出力端子5において、電極リベットに接合される平板部5aとこの平板部より延出する延出
部5bよりなり、延出部5bは基板へ半田付けされる接合部となり、且つ前記延出部5bは、絶縁材6を介して電池のケース2の側面に当接する屈曲部5dを形成している。
(Example 2)
FIG. 2 is an external view of a terminal-equipped prismatic battery according to an embodiment of the present invention. The peripheral edge is welded to the opening of the metal case 2 of the prismatic battery 1 and passes through the electrode hole of the metal sealing plate 3 that closes the opening of the case, and is fixed in an insulated state with a crimped structure. The output terminal 5 welded to the electrode rivet 4 includes a flat plate portion 5a bonded to the electrode rivet and an extended portion 5b extending from the flat plate portion, and the extended portion 5b is a bonded portion soldered to the substrate. The extending portion 5b forms a bent portion 5d that contacts the side surface of the battery case 2 with the insulating material 6 interposed therebetween.

(実施例3)
図3は、本発明の一実施例に係る端子付角型電池の外観図である。角型電池1の金属製ケース2の開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板3の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベット4に溶接された出力端子5において、電極リベットに接合される平板部5aとこの平板部より延出する延出部5bよりなり、延出部5bは基板へ半田付けされる接合部となり、且つ延出部5bは、絶縁材6を介して電池のケース2の側面に当接するクランク形屈曲部5eを形成している。
(Example 3)
FIG. 3 is an external view of a prismatic battery with a terminal according to an embodiment of the present invention. The peripheral edge is welded to the opening of the metal case 2 of the prismatic battery 1 and passes through the electrode hole of the metal sealing plate 3 that closes the opening of the case, and is fixed in an insulated state with a crimped structure. The output terminal 5 welded to the electrode rivet 4 includes a flat plate portion 5a bonded to the electrode rivet and an extended portion 5b extending from the flat plate portion, and the extended portion 5b is a bonded portion soldered to the substrate. The extending portion 5b forms a crank-shaped bent portion 5e that contacts the side surface of the battery case 2 with the insulating material 6 interposed therebetween.

(比較例1)
図4は、従来の出力端子を溶接した端子付角型電池の外観図である。
(Comparative Example 1)
FIG. 4 is an external view of a conventional prismatic battery with terminals welded to output terminals.

なお、出力端子は厚み0.25mmのステンレス製とし、リベットヘッドに対して同じ条件にて溶接した。   The output terminal was made of stainless steel having a thickness of 0.25 mm and was welded to the rivet head under the same conditions.

(試験結果)
これらの端子付角型電池において、出力端子に横方向から力を加えトルク試験を実施した。出力端子がリベットの中心線を軸に回転方向のズレを生じるトルク荷重を調べた結果を表1に示す。
(Test results)
In these square batteries with terminals, a torque test was performed by applying a force from the lateral direction to the output terminals. Table 1 shows the results of examining the torque load that causes the output terminal to shift in the rotational direction about the center line of the rivet.

Figure 0005076762

表1に示すように、本発明の端子付電池は、爪部5cまたは屈曲部5d、クランク形屈曲部5eが角型電池のケース2の側面に当接しているので、電極リベット4のヘッドの回転方向のズレのストッパーとして作用するため、トルク試験において比較例1に比べて大きな力を加えないと回転方向のズレが生じない結果となった。つまり落下などによる外力が出力端子に加わった場合には、前記爪部5cまたは屈曲部5d、クランク形屈曲部5eによって出力端子の回転方向のズレを阻止することができる。
Figure 0005076762

As shown in Table 1, in the battery with a terminal of the present invention, the claw portion 5c or the bent portion 5d and the crank-shaped bent portion 5e are in contact with the side surface of the case 2 of the square battery. Since it acts as a stopper for the deviation in the rotation direction, the result of the deviation in the rotation direction does not occur unless a large force is applied in the torque test as compared with Comparative Example 1. That is, when an external force due to dropping or the like is applied to the output terminal, the displacement of the output terminal in the rotation direction can be prevented by the claw portion 5c or the bent portion 5d and the crank-shaped bent portion 5e.

本発明の端子付角型電池によると、出力端子の固定が強固であり、落下した場合においても回転方向のズレが生じにくく、基板への実装時の端子挿入に支障をきたすことがなく、その工業的価値は高い。   According to the terminal-equipped square battery of the present invention, the output terminal is firmly fixed, and even when dropped, the rotational direction is not easily displaced, and there is no hindrance to the terminal insertion when mounted on the board. Industrial value is high.

本発明の第一の実施例に係る端子付角型電池の外観図1 is an external view of a terminal-equipped square battery according to a first embodiment of the present invention. 本発明の第二の実施例に係る端子付角型電池の外観図External view of a prismatic battery with terminals according to a second embodiment of the present invention 本発明の第三の実施例に係る端子付角型電池の外観図External view of a prismatic battery with terminals according to a third embodiment of the present invention 比較例の端子付角型電池外観図External view of rectangular battery with terminal of comparative example 比較例の端子付角型電池のトルク試験後外観図External view after torque test of the square battery with terminal of the comparative example

符号の説明Explanation of symbols

1 角型電池
2 金属製ケース
3 封口板
4 電極リベット
5 出力端子
5a 平板部
5b 延出部
5c 爪部
5d 屈曲部
5e クランク形屈曲部
6 絶縁材
DESCRIPTION OF SYMBOLS 1 Square battery 2 Metal case 3 Sealing plate 4 Electrode rivet 5 Output terminal 5a Flat plate part 5b Extension part 5c Claw part 5d Bending part 5e Crank-type bending part 6 Insulating material

Claims (3)

金属製ケースと、このケースの開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板と、この封口板に絶縁性のガスケットを挟着し、かつ封口板の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベットと、ケースに内蔵されており、正負極いずれかの電極板を電極リベットに接続している電極群とを備える端子付角型電池において、前記電極リベットに接合される出力端子を備え、この出力端子が電極リベットに接合される平板部とこの平板部より延出する延出部よりなり、且つ前記延出部に絶縁材を介して電池のケースの側面に当接する爪部を形成したことを特徴とする端子付角型電池。   A metal case, a metal sealing plate whose periphery is welded to the opening of the case to close the case opening, an insulating gasket sandwiched between the sealing plate, and an electrode of the sealing plate A square type with a terminal provided with an electrode rivet that penetrates the hole and is fixed in a caulking structure in an insulated state, and an electrode group that is built in the case and connects either the positive or negative electrode plate to the electrode rivet The battery includes an output terminal joined to the electrode rivet, and the output terminal includes a flat plate portion joined to the electrode rivet and an extending portion extending from the flat plate portion, and an insulating material is provided in the extending portion. A square battery with a terminal, characterized in that a claw portion that contacts the side surface of the battery case is formed. 金属製ケースと、このケースの開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板と、この封口板に絶縁性のガスケットを挟着し、かつ封口板の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベットと、ケースに内蔵されており、正負極いずれかの電極板を電極リベットに接続している電極群とを備える端子付角型電池において、前記電極リベットに接合される出力端子を備え、この出力端子が電極リベットに接合される平板部とこの平板部より延出する延出部よりなり、前記延出部に絶縁材を介して電池のケースの側面に当接する屈曲部を形成したことを特徴とする端子付角型電池。   A metal case, a metal sealing plate whose periphery is welded to the opening of the case to close the case opening, an insulating gasket sandwiched between the sealing plate, and an electrode of the sealing plate A square type with a terminal provided with an electrode rivet that penetrates the hole and is fixed in a caulking structure in an insulated state, and an electrode group that is built in the case and connects either the positive or negative electrode plate to the electrode rivet The battery includes an output terminal joined to the electrode rivet, the output terminal comprising a flat plate portion joined to the electrode rivet and an extending portion extending from the flat plate portion, and an insulating material is interposed in the extending portion. A terminal-attached prismatic battery characterized in that a bent portion that contacts the side surface of the battery case is formed. 金属製ケースと、このケースの開口部に周縁が溶着されてケースの開口部を閉塞している金属製の封口板と、この封口板に絶縁性のガスケットを挟着し、かつ封口板の電極孔を貫通して絶縁状態にカシメ構造で固定されている電極リベットと、ケースに内蔵されており、正負極いずれかの電極板を電極リベットに接続している電極群とを備える端子付角型電池において、前記電極リベットに接合される出力端子を備え、この出力端子が電極リベットに接合される平板部とこの平板部より延出する延出部よりなり、前記延出部に絶縁材を介して電池のケースの側面に当接するクランク形屈曲部を形成したことを特徴とする端子付角型電池。   A metal case, a metal sealing plate whose periphery is welded to the opening of the case to close the case opening, an insulating gasket sandwiched between the sealing plate, and an electrode of the sealing plate A square type with a terminal provided with an electrode rivet that penetrates the hole and is fixed in a caulking structure in an insulated state, and an electrode group that is built in the case and connects either the positive or negative electrode plate to the electrode rivet The battery includes an output terminal joined to the electrode rivet, the output terminal comprising a flat plate portion joined to the electrode rivet and an extending portion extending from the flat plate portion, and an insulating material is interposed in the extending portion. A square battery with a terminal, characterized in that a crank-shaped bent portion that contacts the side surface of the battery case is formed.
JP2007236165A 2007-09-12 2007-09-12 Square battery with terminal Expired - Fee Related JP5076762B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9174170B2 (en) * 2008-10-31 2015-11-03 Mitsubishi Heavy Industries, Ltd. Exhaust gas treating catalyst and exhaust gas purification apparatus using the same

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CN107731755A (en) * 2017-05-18 2018-02-23 合肥伊丰电子封装有限公司 A kind of metal shell and its production technology with thin slice flange

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JPH09274905A (en) * 1996-04-04 1997-10-21 Matsushita Electric Ind Co Ltd Manufacture of battery terminal strip and battery provided with terminal strip manufactured by such method
JP2000077045A (en) * 1998-08-28 2000-03-14 Toshiba Corp Electric apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9174170B2 (en) * 2008-10-31 2015-11-03 Mitsubishi Heavy Industries, Ltd. Exhaust gas treating catalyst and exhaust gas purification apparatus using the same
US9308498B2 (en) * 2008-10-31 2016-04-12 Mitsubishi Heavy Industries, Ltd. Exhaust gas treating catalyst and exhaust gas purification apparatus using the same

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