JP2005276571A - Battery pack - Google Patents

Battery pack Download PDF

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JP2005276571A
JP2005276571A JP2004086540A JP2004086540A JP2005276571A JP 2005276571 A JP2005276571 A JP 2005276571A JP 2004086540 A JP2004086540 A JP 2004086540A JP 2004086540 A JP2004086540 A JP 2004086540A JP 2005276571 A JP2005276571 A JP 2005276571A
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sheet material
winding
battery pack
sheet
laminate
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JP4180002B2 (en
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Tomotaka Ueda
朋孝 上田
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Sanyo Electric Co Ltd
Sanyo GS Soft Energy Co Ltd
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Sanyo Electric Co Ltd
Sanyo GS Soft Energy Co Ltd
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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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  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery pack in which the prevention of peeling-off of a sheet can be achieved. <P>SOLUTION: In the battery pack wherein the sheet in which a transparent second sheet material 24 is pasted on an opaque first sheet material 22 is wound and adhered to a case 16 to house the battery 12 placing the second sheet material 24 outside, the winding end of the second sheet material 24 is made longer than that of the first sheet material 22, and a position of the winding end terminal part of the first sheet material 22 and that of the winding end terminal part 24b of the second sheet material 24 are made different. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、第１シート材に該第１シート材よりも光の透過率が高い第２シート材を貼着したシートが、電池を収容するケースに第２シート材を外側にして巻着されている電池パックに関する。   In the present invention, a sheet in which a second sheet material having a light transmittance higher than that of the first sheet material is attached to the first sheet material is wound around a case containing a battery with the second sheet material facing outside. Related to the battery pack.

小型電子機器又は携帯電子機器などの駆動用電源として、正極及び負極を含む発電要素を収容した電池と、保護回路基板とをケースに収納した電池パックが用いられており、ケースには外装ラベルなどのシートが巻着されている。   As a driving power source for small electronic devices or portable electronic devices, a battery pack containing a power generation element including a positive electrode and a negative electrode and a protective circuit board in a case is used. Sheet is wound.

例えば、電池と、保護回路基板とを枠型のケースに収納し、外装ラベルなどのシートを巻着した電池パックが用いられている。図１は外装ラベルが巻着された電池パックの例を示す斜視図であり、図２は外装ラベルが巻着される前の保護回路基板１４、電池１２、及び枠型のケース１６の例を示す斜視図である。また、図７（ａ）は従来の外装ラベルの例を示す平面図であり、図７（ｂ）は従来の外装ラベルのＣ−Ｃ線切断断面図であり、図８は従来の外装ラベルを巻着した電池パック（図１）のＡ−Ａ線切断断面図である。ただし、電池１２内部の詳細は省略している。   For example, a battery pack in which a battery and a protective circuit board are housed in a frame-shaped case and a sheet such as an exterior label is wound is used. FIG. 1 is a perspective view showing an example of a battery pack around which an exterior label is wound, and FIG. 2 is an example of a protective circuit board 14, a battery 12, and a frame-type case 16 before the exterior label is wound. It is a perspective view shown. 7 (a) is a plan view showing an example of a conventional exterior label, FIG. 7 (b) is a cross-sectional view taken along the line C-C of the conventional exterior label, and FIG. 8 shows a conventional exterior label. It is the sectional view on the AA line of the wound battery pack (FIG. 1). However, details inside the battery 12 are omitted.

外装ラベル２０は、不透明な基材２２に透明なラミネート２４が貼着されており、ラミネート２４が外側となるように、ケース１６に巻着される。基材２２及びラミネート２４は同一サイズであり、巻き始め端部２２ａ，２４ａは同位置に重なっており、巻き始め端部２２ｂ，２４ｂも同位置に重なっている。   The exterior label 20 has a transparent laminate 24 attached to an opaque base material 22 and is wound around the case 16 so that the laminate 24 is on the outside. The base material 22 and the laminate 24 have the same size, the winding start ends 22a and 24a overlap at the same position, and the winding start ends 22b and 24b also overlap at the same position.

また、外装ラベルの折り曲げ部分を薄くし、それ以外の部分を厚くすることにより作業性と剥がれ難さを両立させた電池パックが提案されている（例えば、特許文献１参照）。
特開２００３−７７４３５号公報 In addition, a battery pack has been proposed in which both the workability and the difficulty of peeling are achieved by thinning the bent portion of the exterior label and thickening the other portions (see, for example, Patent Document 1).
JP 2003-77435 A

これらの外装ラベルは、ユーザが剥がそうとした場合、巻き終りから剥がすことが可能であるという問題を有する。外装ラベルが剥がされた場合、保護回路基板１４及び電池１２が取出されるなどして、ユーザによる誤使用が生じる可能性がある。   These exterior labels have a problem that they can be removed from the end of winding when the user tries to remove them. When the exterior label is peeled off, the protective circuit board 14 and the battery 12 may be taken out, which may cause misuse by the user.

本発明は斯かる事情に鑑みてなされたものであり、第１シート材の巻き終り位置と第２シート材の巻き終り位置とが異なることにより、外装ラベルなどのシートが剥がされることの防止を図ることができる電池パックを提供することを目的とする。   The present invention has been made in view of such circumstances, and prevents a sheet such as an exterior label from being peeled off because the winding end position of the first sheet material is different from the winding end position of the second sheet material. An object is to provide a battery pack that can be achieved.

本発明に係る電池パックは、第１シート材に該第１シート材よりも光の透過率が高い第２シート材を貼着したシートが、電池を収容するケースに第２シート材を外側にして巻着されている電池パックにおいて、前記第１シート材の巻き終り位置と前記第２シート材の巻き終り位置とが異なることを特徴とする。   In the battery pack according to the present invention, a sheet in which a second sheet material having a light transmittance higher than that of the first sheet material is attached to the first sheet material, and the second sheet material is placed outside in a case housing the battery. In the battery pack that is wound around, the winding end position of the first sheet material and the winding end position of the second sheet material are different.

本発明に係る電池パックは、前記第２シート材の巻き終り位置では前記第１シート材が前記第２シート材に覆われていることを特徴とする。   The battery pack according to the present invention is characterized in that the first sheet material is covered with the second sheet material at a winding end position of the second sheet material.

本発明においては、第１シート材の巻き終り位置と第２シート材の巻き終り位置とが異なっているため、位置が同じ場合に比べて巻き終り部分の段差は小さくなり、巻き終りを見付け難くなる。特に透過率が高く透明な第２シート材の巻き終りは見付け難くなる。また、透過率が低く不透明な第１シート材の巻き終りは透明な第２シート材の巻き終りよりも見付け易いが、第２シート材の巻き終りを第１シート材の巻き終りよりも長くすることにより、不透明な第１シート材の巻き終りは透明な第２シート材の下側になり、第１シート材を巻き終りから剥がすことは困難になる。   In the present invention, since the winding end position of the first sheet material is different from the winding end position of the second sheet material, the step at the winding end portion is smaller than when the position is the same, and it is difficult to find the end of winding. Become. In particular, it is difficult to find the end of winding of the transparent second sheet material having a high transmittance. In addition, the end of winding of the first sheet material having low transmittance and transparency is easier to find than the end of winding of the transparent second sheet material, but the end of winding of the second sheet material is made longer than the end of winding of the first sheet material. Thus, the winding end of the opaque first sheet material is located below the transparent second sheet material, and it is difficult to peel off the first sheet material from the winding end.

本発明においては、第２シート材の巻き終り位置において第１シート材が第２シート材に覆われているため、電池パック全体としては第１シート材が第２シート材に覆われた状態となり、第２シート材を剥がさない限り、第１シート材を剥がすことはできなくなる。第２シート材に覆われた状態の第１シート材を剥がすことは困難であり、また、透明な第２シート材の巻き終りを見付けて剥がすことも困難である。   In the present invention, since the first sheet material is covered with the second sheet material at the end of winding of the second sheet material, the first sheet material is covered with the second sheet material as a whole battery pack. Unless the second sheet material is peeled off, the first sheet material cannot be peeled off. It is difficult to peel off the first sheet material covered with the second sheet material, and it is also difficult to find and peel off the end of winding of the transparent second sheet material.

本発明によれば、巻き終りが見付け難くなり、外装ラベルなどのシートが剥がされることの防止を図ることができる。シートが剥がされて分解されるなどの誤使用の防止を図ることができる。   According to the present invention, it is difficult to find the end of winding, and it is possible to prevent a sheet such as an exterior label from being peeled off. It is possible to prevent misuse such as peeling and disassembling the sheet.

以下、本発明をその実施の形態を示す図面に基づいて具体的に説明する。
図１は外装ラベルなどのシートが巻着された電池パックの例を示す斜視図であり、図２は外装ラベルが巻着される前の分解斜視図である。例えば正負極を巻回した発電要素をアルミ製ケースに収容した直方体状の電池１２と、電池１２の一側面周辺に配置された長方形状の保護回路基板１４とを、合成樹脂製の長方形状の枠型のケース１６に嵌め込み、透過率が低く不透明な基材（第１シート材）に透過率が高く透明なラミネート（第２シート材）を貼着した外装ラベル（シート）２０を、ケース１６に巻着している。ここで、電池１２の厚さは、ケース１６の厚さと同程度であり、外装ラベル２０は、ケース１６及び電池１２に貼着される。 Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
FIG. 1 is a perspective view showing an example of a battery pack around which a sheet such as an exterior label is wound, and FIG. 2 is an exploded perspective view before the exterior label is wound. For example, a rectangular parallelepiped battery 12 in which a power generation element wound with positive and negative electrodes is housed in an aluminum case, and a rectangular protection circuit board 14 disposed around one side surface of the battery 12 are formed into a rectangular shape made of synthetic resin. An outer label (sheet) 20 that is fitted into a frame-shaped case 16 and has an opaque base material (first sheet material) with low transmittance and a transparent laminate (second sheet material) attached thereto is attached to the case 16. It is wound around. Here, the thickness of the battery 12 is approximately the same as the thickness of the case 16, and the exterior label 20 is attached to the case 16 and the battery 12.

外装ラベル２０の基材２２は、例えば厚さ１６〜２５μｍのＰＥＴ（Polyethylene Terephthalate）又はＰＰ(Polypropylene)製の不透明なシートであり、例えば銘板情報などがプリントされている。また、ラミネート２４は、例えば厚さ１６〜２５μｍのＰＥＴ又はＰＰ製の透明なシートである。基材２２及びラミネート２４間は例えばアクリル系の接着剤で貼着されている。また、基材２２及びラミネート２４は例えばアクリル系の接着剤でケース１６及び電池１２に貼着されている。   The base material 22 of the exterior label 20 is an opaque sheet made of PET (Polyethylene Terephthalate) or PP (Polypropylene) having a thickness of 16 to 25 μm, for example, and printed with nameplate information. The laminate 24 is a transparent sheet made of PET or PP having a thickness of 16 to 25 μm, for example. A space between the base material 22 and the laminate 24 is adhered with, for example, an acrylic adhesive. The base material 22 and the laminate 24 are attached to the case 16 and the battery 12 with, for example, an acrylic adhesive.

図３（ａ）は本発明に係る外装ラベル２０の平面図であり、図３（ｂ）は図３（ａ）のＢ−Ｂ線切断断面図である。また、図４は、図１のＡ−Ａ線切断断面図である。ただし、電池１２内部の詳細は省略している。外装ラベル２０の基材２２及びラミネート２４は、巻き終りに関してはラミネート２４の方が長く、巻き終り端部２２ｂ、２４ｂの位置は揃っていない。また、巻き始めに関しては基材２２の方が長く、巻き始め端部２２ａ、２４ａの位置も揃っていない。   FIG. 3A is a plan view of the exterior label 20 according to the present invention, and FIG. 3B is a cross-sectional view taken along the line BB in FIG. 4 is a cross-sectional view taken along line AA in FIG. However, details inside the battery 12 are omitted. As for the base material 22 and the laminate 24 of the exterior label 20, the laminate 24 is longer at the end of winding, and the positions of the end portions 22b and 24b at the end of winding are not aligned. Further, the base material 22 is longer at the start of winding, and the positions of the winding start ends 22a and 24a are not aligned.

図５（ａ）、（ｂ）は巻着前の外装ラベルの例を示す断面図である。図５（ａ）に示すように、基材２２上にラミネート２４が貼着された外装ラベル２０を剥離シート２６から剥がし、基材２２の巻き始め端部２２ａを例えば図４に示すように電池１２外縁部に位置を合わせ、外装ラベル２０の巻着を行うことが可能である。また、他の方法として、図５（ｂ）に示すように、基材２２を剥離シート２６から剥がし、基材２２の巻き始め端部２２ａを例えば図４に示すように電池１２外縁部に位置を合わせ、基材２２の巻着を行い、その後、ラミネート２２を剥離シート２６から剥がし、ラミネート２４の巻き始め端部２４ａを例えば図４に示すように電池パック外縁部に位置を合わせ、ラミネート２４の巻着を行うことも可能である。   FIGS. 5A and 5B are cross-sectional views showing examples of exterior labels before winding. As shown in FIG. 5 (a), the exterior label 20 having the laminate 24 stuck on the base material 22 is peeled off from the release sheet 26, and the winding start end portion 22a of the base material 22 is shown in FIG. The outer label 20 can be wound by aligning the position with the 12 outer edge. As another method, as shown in FIG. 5B, the base material 22 is peeled off from the release sheet 26, and the winding start end portion 22a of the base material 22 is positioned at the outer edge of the battery 12 as shown in FIG. After that, the substrate 22 is wound, the laminate 22 is peeled off from the release sheet 26, and the winding start end 24a of the laminate 24 is aligned with the outer edge of the battery pack as shown in FIG. It is also possible to perform winding.

巻着されたラミネート２４の巻き終り端部２４ｂは、基材２２の巻き終り端部２２ｂと同位置に重なっていないため段差が小さく、また透明であるため巻き終りを見付け難く、剥がされ難い。また、不透明な基材２２の巻き終り端部２２ｂは、ラミネート２４の巻き終り端部２４ｂに比べて見付け易いが、ラミネート２４の下側にあるため、剥がすことは困難である。   Since the winding end end 24b of the laminated laminate 24 is not overlapped with the winding end end 22b of the base material 22, the step is small, and since it is transparent, it is difficult to find the winding end and peel off. In addition, the winding end portion 22b of the opaque base material 22 is easier to find than the winding end portion 24b of the laminate 24, but is difficult to peel off because it is below the laminate 24.

なお、図４の例において、ラミネート２４の巻き終りを長くして、巻き始め端部２４ａ上にラミネート２４を重ねることも可能である。この場合、電池パック全体として、基材２２はラミネート２４に覆われた状態になり、基材２２を剥がすことは困難になる。また、ラミネート２２の巻き始め端部２４ａは、ラミネート２４の下側になるため、剥がすことは困難になる。   In the example of FIG. 4, it is also possible to lengthen the winding end of the laminate 24 and to stack the laminate 24 on the winding start end portion 24a. In this case, the base material 22 is covered with the laminate 24 as the whole battery pack, and it is difficult to peel off the base material 22. Further, since the winding start end portion 24a of the laminate 22 is located below the laminate 24, it is difficult to remove it.

また、基材２２の巻き始め端部２２ａ及びラミネートの巻き始め端部２４ａは、従来と同様に同位置に重ねることも可能である。図６は、巻き始め端部２２ａ及び２４ａを同位置に重ねた場合の図１のＡ−Ａ線切断断面図である。ただし、電池１２内部の詳細は省略している。巻き始めに関しては基材２２の端部２２ａ及びラミネート２４の端部２４ａは揃っているが、巻き終りに関してはラミネート２４の方が長く、巻き終り端部２２ｂ、２４ｂは揃っておらず、基材２２の巻き終り端部２２ｂはラミネート２４の下側になっている。この場合も図４の例と同様に、外装ラベル２０が剥がされることの防止を図ることができるが、図４に示すように巻き始め端部２２ａ及び２４ａの位置をずらす方が、巻着される外装ラベル２０の厚さを低減し、電池パックを小型化することができる。   Further, the winding start end portion 22a of the base material 22 and the winding start end portion 24a of the laminate can be overlapped at the same position as in the prior art. 6 is a cross-sectional view taken along line AA of FIG. 1 when the winding start ends 22a and 24a are overlapped at the same position. However, details inside the battery 12 are omitted. The end 22a of the substrate 22 and the end 24a of the laminate 24 are aligned at the start of winding, but the laminate 24 is longer at the end of winding, and the ends 22b and 24b are not aligned at the end of the winding. The end 22 b of the end of winding 22 is on the lower side of the laminate 24. In this case as well, as in the example of FIG. 4, it is possible to prevent the exterior label 20 from being peeled off. However, as shown in FIG. 4, the position of the winding start ends 22a and 24a is shifted. The thickness of the outer packaging label 20 can be reduced, and the battery pack can be downsized.

上述した各実施の形態では、ラミネート２４の巻き終りを基材２２の巻き終りよりも長くしたが、短くすることも可能である。この場合、基材２２の巻き終りはラミネート２４の下側にならないが、巻き終り端部２２ｂ，２４ｂが同位置に重なっておらず、従来よりも巻き終り部分の段差が小さくなるため、巻き終りは従来よりも見付け難くなり、剥がし難くなる。ただし、基材２２の巻き終りがラミネート２４の下側になっている方が基材２２を剥がすことは困難になるため、基材（第１シート材）の巻き終りはラミネート（第２シート材）の下側になっていることが好ましい。   In each of the above-described embodiments, the end of winding of the laminate 24 is longer than the end of winding of the base material 22, but can be shortened. In this case, the end of winding of the base material 22 is not on the lower side of the laminate 24, but the winding end ends 22b and 24b are not overlapped at the same position, and the step at the end of winding is smaller than in the prior art. Becomes harder to find and peel off than before. However, since it becomes difficult to peel off the base material 22 when the end of winding of the base material 22 is on the lower side of the laminate 24, the end of winding of the base material (first sheet material) is laminated (second sheet material). It is preferable that it is on the lower side.

上述した各実施の形態においては、枠型のケースを例にして説明を行ったが、例えば底及び側壁を有する２つのケース半体を一体化したケース、又は、底及び側壁を有するケース本体の開口部を蓋で閉じたケースに、本発明の外装ラベル２０を巻着することも可能である。   In each of the above-described embodiments, a frame-type case has been described as an example. However, for example, a case in which two case halves having a bottom and a side wall are integrated, or a case body having a bottom and a side wall is integrated. It is also possible to wind the exterior label 20 of the present invention around a case whose opening is closed with a lid.

外装ラベルが巻着された電池パックの例を示す斜視図である。It is a perspective view which shows the example of the battery pack by which the exterior label was wound. 外装ラベルが巻着される前の保護回路基板、電池、及び枠型のケースの例を示す分解斜視図である。It is a disassembled perspective view which shows the example of the protection circuit board before the exterior label is wound, a battery, and a frame type case. （ａ）は本発明に係る外装ラベルの平面図であり、（ｂ）は（ａ）のＢ−Ｂ線切断断面図である。(A) is a top view of the exterior label which concerns on this invention, (b) is the BB sectional view taken on the line of (a). 図１のＡ−Ａ線切断断面図である。It is the sectional view on the AA line of FIG. 巻着前の外装ラベルの例を示す断面図である。It is sectional drawing which shows the example of the exterior label before winding. 巻き始め端部を同位置に重ねた場合の図１のＡ−Ａ線切断断面図である。FIG. 2 is a cross-sectional view taken along line AA of FIG. （ａ）は従来の外装ラベルの例を示す平面図であり、（ｂ）は（ａ）のＣ−Ｃ線切断断面図である。(A) is a top view which shows the example of the conventional exterior label, (b) is CC sectional view taken on the line of (a). 従来の外装ラベルを巻着した電池パックのＡ−Ａ線切断断面図である。It is AA cut | disconnected sectional drawing of the battery pack which wound the conventional exterior label.

符号の説明Explanation of symbols

１２ 電池
１４ 保護回路基板
１６ ケース
２０ 外装ラベル
２２ 基材
２４ ラミネート 12 Battery 14 Protection Circuit Board 16 Case 20 Exterior Label 22 Base Material 24 Laminate

Claims (2)

第１シート材に該第１シート材よりも光の透過率が高い第２シート材を貼着したシートが、電池を収容するケースに第２シート材を外側にして巻着されている電池パックにおいて、
前記第１シート材の巻き終り位置と前記第２シート材の巻き終り位置とが異なることを特徴とする電池パック。 A battery pack in which a sheet in which a second sheet material having a light transmittance higher than that of the first sheet material is attached to the first sheet material is wound around a case that houses the battery with the second sheet material facing outside. In
The battery pack, wherein a winding end position of the first sheet material is different from a winding end position of the second sheet material. 前記第２シート材の巻き終り位置では前記第１シート材が前記第２シート材に覆われていることを特徴とする請求項１記載の電池パック。   2. The battery pack according to claim 1, wherein the first sheet material is covered with the second sheet material at a winding end position of the second sheet material.
JP2004086540A 2004-03-24 2004-03-24 Battery pack Expired - Fee Related JP4180002B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008293939A (en) * 2007-05-25 2008-12-04 Samsung Sdi Co Ltd Secondary battery
JP2009087937A (en) * 2007-09-28 2009-04-23 Samsung Sdi Co Ltd Secondary battery
JP2009224049A (en) * 2008-03-13 2009-10-01 Sanyo Electric Co Ltd Battery pack

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008293939A (en) * 2007-05-25 2008-12-04 Samsung Sdi Co Ltd Secondary battery
US8557435B2 (en) 2007-05-25 2013-10-15 Samsung Sdi Co., Ltd. Secondary battery
JP2009087937A (en) * 2007-09-28 2009-04-23 Samsung Sdi Co Ltd Secondary battery
US8512894B2 (en) 2007-09-28 2013-08-20 Samsung Sdi Co., Ltd. Rechargeable battery having a protective case
JP2009224049A (en) * 2008-03-13 2009-10-01 Sanyo Electric Co Ltd Battery pack

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