JP4480456B2 - Battery pack and portable communication terminal using the same - Google Patents

Battery pack and portable communication terminal using the same Download PDF

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JP4480456B2
JP4480456B2 JP2004141765A JP2004141765A JP4480456B2 JP 4480456 B2 JP4480456 B2 JP 4480456B2 JP 2004141765 A JP2004141765 A JP 2004141765A JP 2004141765 A JP2004141765 A JP 2004141765A JP 4480456 B2 JP4480456 B2 JP 4480456B2
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double
case
battery pack
battery
sided tape
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孝博 中川
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埼玉日本電気株式会社
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    • 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

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Description

本発明は電池パック及びそれを用いた携帯通信端末に関し、特に携帯型の電子機器における充電式の電池セルを、両面接着テープを用いてケースに固定した電池パック及びそれを用いた携帯通信端末に関するものである。 The present invention relates to a battery pack and a portable communication terminal using the same, and more particularly to a battery pack in which a rechargeable battery cell in a portable electronic device is fixed to a case using a double-sided adhesive tape and a portable communication terminal using the same. It is about.

携帯電話機などの携帯型電子機器においては、充電式の電池パックが広く用いられている。この電池パックは、電池セルをケースへ収納して固定するために、両面接着テープ（以下、単に両面テープと称す）が用いられており、特許文献１、２、３などに多く開示されている。この場合、電池セルの一面とケース内面とを、両面テープにて接着して固定するのであるが、両面テープを用いる利点としては、固定するための作業が容易であることの他に、落下衝撃など外力による電池パック内の電池セルの動きを抑止することができることである。   In portable electronic devices such as cellular phones, rechargeable battery packs are widely used. This battery pack uses a double-sided adhesive tape (hereinafter simply referred to as a double-sided tape) for housing and fixing the battery cells in the case, and many of them are disclosed in Patent Documents 1, 2, 3 and the like. . In this case, one side of the battery cell and the inner surface of the case are bonded and fixed with a double-sided tape, but as an advantage of using the double-sided tape, in addition to the work for fixing, a drop impact For example, the movement of the battery cells in the battery pack due to external force can be suppressed.

図７は電池パックの分解斜視であり、電池上ケースであるカバー１と、電池セル２と、両面テープ３と、引回し電極６と、電池下ケースであるケース本体７とからなっている。電池セル２の下面とケース本体７の内側底面との間に、両面テープ３を設けて、これら両面で接着を行うようになっている。   FIG. 7 is an exploded perspective view of the battery pack, and includes a cover 1 that is a battery upper case, a battery cell 2, a double-sided tape 3, a routing electrode 6, and a case body 7 that is a battery lower case. A double-sided tape 3 is provided between the lower surface of the battery cell 2 and the inner bottom surface of the case main body 7, and the both surfaces are bonded.

両面テープ３には耳部５が設けられており、この耳部５は電池セル２の側面へ向けて折り曲げられて電池セル２と引回し電極（板金）６とが貼り付けられるようになっている。この引回し電極６は、電池セル２の一方の電極と接続されて、ケース本体７の一つの側面に設けられている接続端子孔９へ電気的接続をなすものである。なお、１０は電力供給試験用孔であり、ケース本体７の上記側面に設けられている。   The double-faced tape 3 is provided with an ear portion 5 that is bent toward the side surface of the battery cell 2 so that the battery cell 2 and the routing electrode (sheet metal) 6 are attached. Yes. The routing electrode 6 is connected to one electrode of the battery cell 2 and makes an electrical connection to the connection terminal hole 9 provided on one side surface of the case body 7. Reference numeral 10 denotes a power supply test hole, which is provided on the side surface of the case body 7.

この電池パックの作製手順について説明する。両面テープ３の耳部５を用いて電池セル２と引回し電極６とを貼り付ける。その後、ケース本体７に組み込んで、カバー１をケース本体７に重ね合わせる。このとき、カバー１の周囲に設けられている複数のリブ１１を、ケース本体７の溝７１へ嵌め込んで、超音波溶着による接合方法により、リブ１１を超音波振動させて溶着する。これにより、電池パックが完成することになる。   A procedure for manufacturing this battery pack will be described. The battery cell 2 and the routing electrode 6 are pasted using the ears 5 of the double-sided tape 3. Thereafter, the cover 1 is incorporated into the case body 7 and the cover 1 is overlaid on the case body 7. At this time, the plurality of ribs 11 provided around the cover 1 are fitted into the grooves 71 of the case body 7, and the ribs 11 are ultrasonically vibrated and welded by a joining method using ultrasonic welding. Thereby, the battery pack is completed.

なお、両面テープ３をリング状として、中央部を中抜きした形とするのは、電池セル２とケース本体７との間に、隙間を設けることにより、電池セル２自体の膨れを許容するためである。この電池セル自体の膨れとは、電池セルが満充電時や５００サイクル程度の充電行為を繰返すことによって、セル中央部分が膨れる特性のことである。   The reason why the double-sided tape 3 is formed in a ring shape and the center portion is hollowed out is to allow the battery cell 2 itself to swell by providing a gap between the battery cell 2 and the case body 7. It is. The swelling of the battery cell itself is a characteristic that the center portion of the battery cell swells when the battery cell is fully charged or when it is repeatedly charged for about 500 cycles.

特開２００２−３４３３１７号公報JP 2002-343317 A 特開２００１−２６６８１９号公報JP 2001-266819 A 特開２００１−３２５９２８号公報JP 2001-325928 A

上述した如く、カバー１をケース本体７へ取付ける際には、リブ１１を溝７１へ嵌合して超音波溶着により接合するのであるが、このとき、両面テープ３の中央部の中抜き部分が、電池セル２とケース本体７との間の隙間（閉空間）を形成する。その様子を、図８の斜線部分８で示している。なお、図８（Ａ）は電池パックの正面図、（Ｂ）はそのＡ−Ａ線に沿う断面図である。この隙間には空気が溜り、溶着時の熱により膨張するが、この隙間は閉空間であるために空気８の逃げ道が確保されていないので、電池パックが膨らむという不具合が発生する。   As described above, when the cover 1 is attached to the case body 7, the rib 11 is fitted into the groove 71 and joined by ultrasonic welding. A gap (closed space) between the battery cell 2 and the case body 7 is formed. This is indicated by the hatched portion 8 in FIG. 8A is a front view of the battery pack, and FIG. 8B is a cross-sectional view taken along the line AA. Air accumulates in this gap and expands due to heat during welding, but since this gap is a closed space, the escape path of the air 8 is not secured, so that the battery pack swells.

本発明の目的は、電池セルをケース内に両面テープを用いて収納固定する際に、ケース内における空気の溜まりの原因となる閉空間をなくして、ケースの膨らみが生じないようにした電池パック及びそれを用いた携帯通信端末を提供するものである。 An object of the present invention is to provide a battery pack that eliminates a closed space that causes air accumulation in the case and prevents the case from swelling when the battery cell is housed and fixed in the case using a double-sided tape. And a portable communication terminal using the same .

本発明による電池パックは、電池の所定面とケースの内側の所定面との間に両面接着テープを用いて前記電池を前記ケースに固定した電池パックであって、前記両面接着テープを、リング状の一部を切り欠いた形状としたことを特徴とする。 The battery pack according to the present invention is a battery pack in which the battery is fixed to the case using a double-sided adhesive tape between a predetermined surface of the battery and a predetermined surface inside the case, and the double-sided adhesive tape is attached in a ring shape. It is characterized by having a shape in which a part of is cut out.

本発明による携帯通信端末は、上記の電池パックを用いたことを特徴とする。A mobile communication terminal according to the present invention uses the above battery pack.

本発明の作用を述べる。電池セルなどの被収納物の一つの面と、ケース内面とを両面テープで接着する場合に、被収納物の面、ケース内面、両面テープとの３者による閉空間が生じないような形状の両面テープを用いて、被収納物とケースとの接着を行うようにする。例えば、両面テープとして、一部が切欠かれたリング状のものを用いることにより、この切欠き部により、空気の逃げ道が確保される。よって、例えば、ケースにカバーを取付けるための超音波溶着時に発生するケースの膨らみを解消できることになる。   The operation of the present invention will be described. When one surface of the object to be stored, such as a battery cell, and the inner surface of the case are bonded with a double-sided tape, a shape that does not cause a closed space between the surface of the object to be stored, the inner surface of the case, and the double-sided tape is not generated Use double-sided tape to bond the item to be stored and the case. For example, as a double-sided tape, a ring-shaped tape with a part cut away is used, and an air escape path is secured by the cutout part. Therefore, for example, the swelling of the case that occurs at the time of ultrasonic welding for attaching the cover to the case can be eliminated.

本発明によれば、被収納物とケースとを接着するための両面テープの形状を、空気溜りが生じない、すなわち閉空間が生じない様な形状としたので、空気の逃げ道が確保されて、ケースの膨らみが防止できるという効果がある。   According to the present invention, the shape of the double-sided tape for adhering the object to be stored and the case is such that no air accumulation occurs, i.e., no closed space is generated, so an air escape path is secured, There is an effect that the swelling of the case can be prevented.

以下に、図面を用いて本発明の一実施の形態について説明する。図１は本発明の一実施の形態を示す分解斜視図であり、図７と同等部分には、同一符号を付して示している。図１を参照すると、本実施の形態は、携帯電話機などの携帯型電子機器に用いられる充電式電池パックの例であり、電池上ケースであるカバー１と、電池セル２と、両面テープ３と、引回し電極６と、電池下ケースであるケース本体７とからなる。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of the present invention, in which the same parts as those in FIG. Referring to FIG. 1, the present embodiment is an example of a rechargeable battery pack used in a portable electronic device such as a cellular phone, and includes a cover 1 that is a battery upper case, a battery cell 2, and a double-sided tape 3. The lead electrode 6 and a case body 7 which is a battery lower case.

電池セル２の下面とケース本体７の内側底面との間に、両面テープ３を設けて、この両面テープ３を用いて電池セル２をケース本体７の内側底面に固定するようになっている。この両面テープ３の形状が、図７に示した従来例とは相違しており、他の構成は図７の例と同一である。すなわち、両面テープ３は、その一部が切欠かれた切欠き部３１を有するリング状となっている点が、本実施の形態の特徴である。   A double-sided tape 3 is provided between the lower surface of the battery cell 2 and the inner bottom surface of the case body 7, and the battery cell 2 is fixed to the inner bottom surface of the case body 7 using this double-sided tape 3. The shape of the double-sided tape 3 is different from the conventional example shown in FIG. 7, and the other configuration is the same as the example of FIG. That is, the double-sided tape 3 is characterized by a ring shape having a cutout portion 31 with a part cut away.

図２（Ａ）は図１の電池パックの側面図、（Ｂ）は正面図、（Ｃ）は（Ｂ）のＢ−Ｂ線に沿う断面図であり、図１と同等部分には、同一符号を付して示している。図１に示した如く、両面テープ３の一部に切欠き部３１を設けているために、電池セル２の下面と、ケース本体７の内部底面と、更には、両面テープ３とが作る空間は、閉空間にはならず、この部分の空気は、この切欠き部３１が逃げ道となってケース本体７の側面に設けられている接続端子孔９や電力供給試験用孔１０を介して、ケース外部へ逃げることが可能になる。   2A is a side view of the battery pack of FIG. 1, FIG. 2B is a front view, and FIG. 2C is a cross-sectional view taken along line B-B of FIG. A reference numeral is attached. As shown in FIG. 1, since the notch 31 is provided in a part of the double-sided tape 3, the space created by the lower surface of the battery cell 2, the inner bottom surface of the case body 7, and the double-sided tape 3. The air in this portion does not become a closed space, and the cutout portion 31 serves as an escape route through the connection terminal hole 9 and the power supply test hole 10 provided on the side surface of the case body 7. It is possible to escape to the outside of the case.

従って、カバー１とケース本体７とを超音波溶着による接合時に、電池セルとケース底面との間の膨張した空気は溜ることがなく、外部へ逃げるために、ケースの膨らみが防止されるのである。   Therefore, when the cover 1 and the case main body 7 are joined by ultrasonic welding, the expanded air between the battery cell and the case bottom does not collect and escapes to the outside, so that the case is prevented from bulging. .

なお、両面テープ３の切欠き部３１の位置や大きさは、特に限定されるものではなく、また両面テープ３の形状についても、例えば、図３に示す如く、円形リングの一部を切欠いたものでも良く、また、リング状に限らず、図４に示す如く、カタカナの“エ”の文字形状や、図５、６に示す如く、「＋」や「×」印の形状（「×」は「＋」を４５度回転したものであり、「＋」と等価である）など、種々の形状が考えられる。   In addition, the position and size of the notch 31 of the double-sided tape 3 are not particularly limited, and the shape of the double-sided tape 3 is also a part of a circular ring, for example, as shown in FIG. It is not limited to a ring shape, and as shown in FIG. 4, the shape of a letter “e” in katakana, or the shape of a “+” or “x” mark (“×”) as shown in FIGS. Is obtained by rotating “+” by 45 degrees and is equivalent to “+”).

要は、両面テープ３の形状として、テープ自身で閉空間を有するようなものでなければ、本発明の目的及び効果は達成できることになる。   In short, unless the tape itself has a closed space as the shape of the double-sided tape 3, the objects and effects of the present invention can be achieved.

上記の実施の形態においては、携帯電話機の充電式電池パックの収納構造について示しているが、携帯型の電子機器の充電式電池パックにも適用できる。更には、電池パックに限らず、被収納物を両面テープを用いてケース内に固定して収納する収納構造に広く適用できることは勿論である。   In the above embodiment, the storage structure of the rechargeable battery pack of the mobile phone is shown, but the present invention can also be applied to a rechargeable battery pack of a portable electronic device. Furthermore, the present invention is not limited to battery packs, and can of course be widely applied to a storage structure in which an object to be stored is fixed and stored in a case using a double-sided tape.

本発明の一実施の形態を示す分解斜視図である。It is a disassembled perspective view which shows one embodiment of this invention. （Ａ）は本発明の実施の形態の側面図、（Ｂ）はその正面図、（Ｃ）は（Ｂ）のＢ−Ｂ線に沿う断面図である。(A) is the side view of embodiment of this invention, (B) is the front view, (C) is sectional drawing which follows the BB line of (B). 本発明の他の実施の形態を示す正面図である。It is a front view which shows other embodiment of this invention. 本発明の更に他の実施の形態を示す正面図である。It is a front view which shows other embodiment of this invention. 本発明の別の実施の形態を示す正面図である。It is a front view which shows another embodiment of this invention. 本発明の他の実施の形態を示す正面図である。It is a front view which shows other embodiment of this invention. 従来例を示す分解斜視図である。It is a disassembled perspective view which shows a prior art example. （Ａ）は図７の正面図、（Ｂ）は（Ａ）のＡ−Ａ線に沿う断面図である。(A) is a front view of FIG. 7, (B) is sectional drawing which follows the AA line of (A).

符号の説明Explanation of symbols

１ カバー
２ 電池セル
３ 両面接着テープ
７ ケース本体
９ 接続端子孔
１０ 電力供給試験用孔
３１ 切欠き部
DESCRIPTION OF SYMBOLS 1 Cover 2 Battery cell 3 Double-sided adhesive tape 7 Case body 9 Connection terminal hole 10 Power supply test hole 31 Notch

Claims (2)

電池の所定面とケースの内側の所定面との間に両面接着テープを用いて前記電池を前記ケースに固定した電池パックであって、
前記両面接着テープを、リング状の一部を切り欠いた形状としたことを特徴とする電池パック。 A battery pack in which the battery is fixed to the case using a double-sided adhesive tape between a predetermined surface of the battery and a predetermined surface inside the case,
A battery pack , wherein the double-sided adhesive tape has a ring-shaped part . 請求項１記載の電池パックを含むことを特徴とする携帯通信端末。A portable communication terminal comprising the battery pack according to claim 1.
JP2004141765A 2004-05-12 2004-05-12 Battery pack and portable communication terminal using the same Expired - Fee Related JP4480456B2 (en)

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KR100943570B1 (en) 2007-10-30 2010-02-23 삼성에스디아이 주식회사 Battery pack
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