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JP5374856B2 - Battery pack insulator structure and battery pack structure - Google Patents

Battery pack insulator structure and battery pack structure Download PDF

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Publication number
JP5374856B2
JP5374856B2 JP2007274097A JP2007274097A JP5374856B2 JP 5374856 B2 JP5374856 B2 JP 5374856B2 JP 2007274097 A JP2007274097 A JP 2007274097A JP 2007274097 A JP2007274097 A JP 2007274097A JP 5374856 B2 JP5374856 B2 JP 5374856B2
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battery pack
circuit board
insulating material
cell surface
insulator
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JP2009104843A (en
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大輔 八木沼
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NEC Corp
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NEC Corp
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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

本発明は電池のセル面と該セル面上に配置する保護回路基板との間を絶縁する電池パック用インシュレータ構造及び電池パック構造に関する。   The present invention relates to an insulator structure for a battery pack and a battery pack structure that insulates between a cell surface of a battery and a protection circuit board disposed on the cell surface.

近年、携帯電話装置の小型、薄型化に伴い、電池パックも小型・薄型化が要求されている。そのためには、電池パックの内部構造の空間は出来るだけ排除するように構成しなければならない。   In recent years, with the reduction in size and thickness of mobile phone devices, battery packs are also required to be reduced in size and thickness. For this purpose, the space of the internal structure of the battery pack must be excluded as much as possible.

このための関連技術として、電池のセルの２面に両面粘着テープで絶縁板を接着し、その上に金型成形したスペーサを両面粘着テープで接着し、更にスペーサの上に保護回路基板とＰＴＣサーミスタとからなる保護回路を搭載した電池パックの内部構造や、電池のセルの隣接する２又は３面に、両面粘着テープにより金型成形した絶縁板を兼ねた外装ケースの突起部の溝と係合するリブを備えるスペーサを係合し、その上に保護回路基板とＰＴＣサーミスタとからなる保護回路を搭載した電池パックの内部構造が知られている（特許文献１、図８及び図１、２、段落0022,0033,0034,0047等参照）。   As a related technique for this purpose, an insulating plate is bonded to two surfaces of a battery cell with a double-sided adhesive tape, a die-molded spacer is bonded to the two cells with a double-sided adhesive tape, and a protective circuit board and a PTC are further mounted on the spacer. The internal structure of a battery pack equipped with a protection circuit consisting of a thermistor, and the groove of the protrusion of the outer case that also serves as an insulating plate molded with double-sided adhesive tape on two or three adjacent battery cells An internal structure of a battery pack is known in which a spacer including a mating rib is engaged and a protection circuit including a protection circuit board and a PTC thermistor is mounted thereon (Patent Document 1, FIG. 8, FIG. 1, and FIG. 2). , Paragraphs 0022, 0033, 0034, 0047, etc.).

しかし、このような構造の電池パックは、複雑な構造のスペーサを必要とし、しかもスペーサ自体は金型成形で製作するという大掛かりな別工程を必要とするもので、生産性、コスト、小型化等の点で問題がある。   However, the battery pack having such a structure requires a complicated structure spacer, and the spacer itself requires a large separate process of manufacturing by molding, so that productivity, cost, miniaturization, etc. There is a problem in terms of.

これに対し、電池のセル面と該セル面上に配置する保護回路基板との間に絶縁性シート（電池パック用インシュレータという。）を配置するという方法が考えられ、この方法はインシュレータの製作自体も簡便に実現可能であり、電池パックの小型化が図れることから有用である。   On the other hand, a method of disposing an insulating sheet (referred to as an insulator for a battery pack) between the cell surface of the battery and the protective circuit substrate disposed on the cell surface is conceivable, and this method is the manufacture of the insulator itself. Can be easily realized, and is useful because the battery pack can be downsized.

図５は、本発明の関連技術のインシュレータが使用されている電池パック内部を示す図である。電池のセル６、保護回路基板７、保護回路基板７に搭載された部品実装部８、ＰＴＣ（サーミスタ）９、金属ＴＡＢ（金属板）１０、インシュレータ１３で構成されている。   FIG. 5 is a diagram showing the inside of the battery pack in which the insulator according to the related art of the present invention is used. The battery cell 6 includes a protection circuit board 7, a component mounting portion 8 mounted on the protection circuit board 7, a PTC (thermistor) 9, a metal TAB (metal plate) 10, and an insulator 13.

この電池パックにおける絶縁用のインシュレータ１３は、所定長の一様な厚みの絶縁材料で構成し、電池のセル６の面に端部までに貼り付けるタイプのものであるが、インシュレータ１３の上に保護回路基板７の部品実装部８が配置されるため、保護回路基板７等とインシュレータ１３の間には無駄な空間が形成され、電池パックの小型化のためには難点がある。
特開２００７−１５７４５２号公報 The insulator 13 for insulation in this battery pack is made of an insulating material having a predetermined length and a uniform thickness, and is a type that is pasted to the end of the battery cell 6. Since the component mounting portion 8 of the protection circuit board 7 is disposed, a useless space is formed between the protection circuit board 7 and the insulator 13 and there is a difficulty in downsizing the battery pack.
JP 2007-157452 A

そこで、保護回路基板７の部品実装部８が位置するインシュレータの端部側を除去し、部品実装部８のインシュレータと反対側に別のスペーサを追加する構造が考えられる。   Therefore, a structure is conceivable in which the end portion side of the insulator where the component mounting portion 8 of the protection circuit board 7 is located is removed, and another spacer is added on the side opposite to the insulator of the component mounting portion 8.

図６は、このようなインシュレータとスペーサを用いる電池パック内部を示す図である。電池のセル６、保護回路基板７、保護回路基板の部品実装部８、ＰＴＣ９、金属ＴＡＢ１０、インシュレータ１４、スペーサ１５で構成されている。   FIG. 6 is a view showing the inside of a battery pack using such an insulator and a spacer. The battery cell 6, the protection circuit board 7, the protection circuit board component mounting portion 8, the PTC 9, the metal TAB 10, the insulator 14, and the spacer 15 are included.

この構成によれば、セル６の面上のインシュレータ１４の端部とスペーサ１５との間に、空間が形成され部品実装部８を収容可能とするため、図５に示すような無駄な空間を無くすことができるから、一層の電池パックの小型化が図れる。 According to this configuration, a space is formed between the end portion of the insulator 14 on the surface of the cell 6 and the spacer 15 so that the component mounting portion 8 can be accommodated . Since it can be eliminated, the battery pack can be further reduced in size.

しかしながら、このインシュレータ構造では、絶縁用の部品としては２点となるため生産性が低下するという問題がある。   However, this insulator structure has a problem that productivity is lowered because there are two insulating parts.

（目的）
本発明は、以上の事情に鑑みてなされたものであり、その目的は電池パックの小型化を可能とし、生産性を向上できる電池パック用インシュレータ構造及び電池パック構造を提供することにある。 (the purpose)
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an insulator structure for a battery pack and a battery pack structure capable of reducing the size of the battery pack and improving the productivity.

本発明の第１の電池パック用インシュレータ構造は、電池のセル面と該セル面上に配置する保護回路基板との間に設置する絶縁性シートでなる電池パック用インシュレータ構造であって、前記絶縁性シートは、前記セル面側の可撓性の絶縁性素材と、前記保護回路基板が搭載される側の可撓性の絶縁性素材とからなる積層構造を有し、前記セル面側の可撓性の絶縁性素材は、前記保護回路基板のうち前記セル面と向かい合う面上に設けられた部品実装部を収容する切り欠き部を有し、前記セル面側の可撓性の絶縁性素材と前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記切り欠き部内の底面に前記セル面側と接着可能な粘着層が配置されるように、該粘着層で接着されており、前記部品実装部が前記切り欠き部に収容されたとき、前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記セル面と前記部品実装部の間に配置されるとともに、前記切り欠き部の内面と前記部品実装部の間に配置されることを特徴とする。 The first insulator structure for a battery pack according to the present invention is an insulator structure for a battery pack made of an insulating sheet placed between a cell surface of a battery and a protective circuit board disposed on the cell surface, The conductive sheet has a laminated structure composed of a flexible insulating material on the cell surface side and a flexible insulating material on the side on which the protective circuit board is mounted, The flexible insulating material has a cutout portion for accommodating a component mounting portion provided on the surface of the protective circuit board facing the cell surface, and the flexible insulating material on the cell surface side. The flexible insulating material on the side on which the protection circuit board is mounted is bonded with the adhesive layer so that an adhesive layer that can be bonded to the cell surface side is disposed on the bottom surface in the notch. and, with the component mounting portion is received in the notch The flexible insulating material on the side on which the protection circuit board is mounted is disposed between the cell surface and the component mounting portion, and between the inner surface of the notch portion and the component mounting portion. It is characterized by being arranged.

本発明の第１の電池パック構造は、電池のセルと、前記セルのセル面上に配置された保護回路基板と、前記セル面と前記保護回路基板の間に設置される絶縁性シートでなる電池パック用インシュレータとを備え、前記絶縁性シートは、前記セル面側の可撓性の絶縁性素材と、前記保護回路基板が搭載される側の可撓性の絶縁性素材とからなる積層構造を有し、前記セル面側の可撓性の絶縁性素材は、前記保護回路基板のうち前記セル面と向かい合う面上に設けられた部品実装部を収容する切り欠き部を有し、前記セル面側の可撓性の絶縁性素材と前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記切り欠き部内の底面に前記セル面側と接着可能な粘着層が配置されるように、該粘着層で接着されており、前記部品実装部が前記切り欠き部に収容されたとき、前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記セル面と前記部品実装部の間に配置されるとともに、前記切り欠き部の内面と前記部品実装部の間に配置されることを特徴とする。

The first battery pack structure of the present invention includes a battery cell, a protection circuit board disposed on the cell surface of the cell, and an insulating sheet installed between the cell surface and the protection circuit board. A laminated structure comprising a flexible insulating material on the cell surface side and a flexible insulating material on the side on which the protective circuit board is mounted. It has a flexible insulating material of the cell surface has a cutout portion for accommodating a component mounting section provided opposite on the surface and the cell surface of the protection circuit board, the cell The flexible insulating material on the surface side and the flexible insulating material on the side on which the protective circuit board is mounted are provided with an adhesive layer that can be adhered to the cell surface side on the bottom surface in the notch. to so that is adhered by the adhesive layer, the component mounting section switching the When accommodated in the notch, the flexible insulating material on the side on which the protection circuit board is mounted is disposed between the cell surface and the component mounting part, and the inner surface of the notch part. It is arranged between the component mounting parts.

本発明によれば、簡素な構成で電池のセル面と保護回路との絶縁を可能とし、電池パックの小型化と生産性を向上させることが可能である。   According to the present invention, it is possible to insulate the cell surface of the battery from the protection circuit with a simple configuration, and to reduce the size and productivity of the battery pack.

（第１の実施形態）
本発明の電池パック用インシュレータ構造及び該電池パック用インシュレータを使用した電池パック構造の一実施形態について説明する。 (First embodiment)
An embodiment of a battery pack insulator structure of the present invention and a battery pack structure using the battery pack insulator will be described.

（構成の説明）
図１は、第１の実施形態の電池パック用インシュレータの構造を示す斜視図である。ポリエチレン テレフタレート（Polyethylene Terephthalate：ＰＥＴ）の可撓性のフィルムでなるＰＥＴ部１、可撓性の絶縁性紙素材の紙素材部２、同絶縁性紙素材の先端紙素材部３、電池のセルのコーナ部に対応する折り曲げ部４、電池のセルの負極端子を露出させる貫通孔のセル負極用穴部５で構成されている。 (Description of configuration)
FIG. 1 is a perspective view showing the structure of the battery pack insulator of the first embodiment. PET section 1 made of a flexible film of polyethylene terephthalate (PET), a paper material section 2 of a flexible insulating paper material, an advanced paper material section 3 of the same insulating paper material, a battery cell It is composed of a bent portion 4 corresponding to a corner portion and a cell negative electrode hole portion 5 of a through hole exposing a negative electrode terminal of a battery cell.

本電池パック用インシュレータは、絶縁性素材のポリエチレン テレフタレートのフィルムでなるＰＥＴ部１に、絶縁性素材の紙素材部２及び先端紙素材部３を積層して絶縁性シートとし、更にインシュレータの折り曲げ部４とセル負極用穴部５を形成したものであるが、前記絶縁性シートとしては、例えば、絶縁性素材のポリエチレン テレフタレートのフィルムに均一な厚みの絶縁性素材の紙素材を両面粘着テープ等の粘着層により接着（積層）し、紙素材の一部を切り欠き（剥ぎ取る）ことにより製作することが可能である。   This insulator for a battery pack is obtained by laminating a paper material portion 2 and a tip paper material portion 3 of an insulating material on a PET portion 1 made of a polyethylene terephthalate film of an insulating material to form an insulating sheet, and further a bent portion of the insulator 4 and the cell negative hole 5 are formed. As the insulating sheet, for example, a polyethylene terephthalate film of an insulating material is coated with a paper material of an insulating material having a uniform thickness, such as a double-sided adhesive tape. It can be manufactured by bonding (stacking) with an adhesive layer and cutting out (peeling off) a part of the paper material.

図２は、第１の実施形態のインシュレータが使用された電池パック内部を示す断面図であり、図３は電池パックの上面側からみた正面図である。   FIG. 2 is a cross-sectional view showing the inside of the battery pack in which the insulator according to the first embodiment is used, and FIG. 3 is a front view seen from the upper surface side of the battery pack.

図２に示すように、電池パック用インシュレータを構成するＰＥＴ部１、紙素材部２及び先端紙素材部３、電池のセル６、保護回路を構成する保護回路基板７、保護回路基板の部品実装部８、Positive Temperature Coefficient（ＰＴＣ）素子のＰＴＣ９及び金属板（タブ）の金属ＴＡＢ１０で構成されている。以下、電池パックの各部の構成を説明する。   As shown in FIG. 2, the PET unit 1, the paper material unit 2 and the leading paper material unit 3, the battery cell 6, the protection circuit board 7 constituting the protection circuit, and the component mounting of the protection circuit board constituting the battery pack insulator Part 8 is composed of a PTC 9 of a positive temperature coefficient (PTC) element and a metal TAB 10 of a metal plate (tab). Hereinafter, the configuration of each part of the battery pack will be described.

電池のセル６は、その内部に例えばリチウムイオン二次電池等の二次電池を備え、これをアルミニウム等のケースに収納して構成され、セル６の一端面には絶縁板（図示せず）を介して突出した負極端子（−端子）が設けられ、この負極端子が設けられた部分以外のセルの全体が正極端子（＋端子）として構成されている。   The battery cell 6 includes a secondary battery such as a lithium ion secondary battery inside, and is housed in a case such as aluminum. An insulating plate (not shown) is provided on one end surface of the cell 6. A negative electrode terminal (− terminal) projecting through is provided, and the entire cell other than the portion provided with the negative electrode terminal is configured as a positive electrode terminal (+ terminal).

図１に示す電池パック用インシュレータは、折り曲げ部４で折り曲げられ、セル６の隣接する２面（上面と左側面）に配置され、先端紙素材部３がセル６の上面端部に位置し、前記切り欠き部のＰＥＴ部１がセル６の上面に貼り付くことにより、当該切り欠き部と反対側のＰＥＴ部１の上面に空間が形成される。   The battery pack insulator shown in FIG. 1 is bent at the bent portion 4 and is disposed on two adjacent surfaces (upper surface and left side surface) of the cell 6, and the leading edge paper material portion 3 is positioned at the upper surface end of the cell 6. By adhering the PET part 1 of the notch to the upper surface of the cell 6, a space is formed on the upper surface of the PET part 1 opposite to the notch.

なお、ＰＥＴ部１の厚みは紙素材部２及び先端紙素材部３の絶縁性紙素材の厚みより薄くすることにより形成される空間を増大させることができ、また、部品１点としてのインシュレータの扱い易さ、及び空間形成の容易さ等の要素を考慮してＰＥＴ部１の可撓性等が選定される。   The space formed by making the thickness of the PET portion 1 thinner than the thickness of the insulating paper material of the paper material portion 2 and the leading paper material portion 3 can be increased, and the insulator as one component can be increased. The flexibility of the PET unit 1 is selected in consideration of factors such as ease of handling and ease of space formation.

また、前記切り欠き部のＰＥＴ部１のセル６の上面への貼り付けは、前記紙素材の一部の切り欠き（剥ぎ取り）により現れた前記両面粘着テープ等の粘着層を利用すると好適に実現できる。   Moreover, it is preferable that the notch portion is attached to the upper surface of the cell 6 of the PET portion 1 by using an adhesive layer such as the double-sided adhesive tape that appears due to a notch (peeling) of the paper material. realizable.

保護回路基板７は、電池パック用インシュレータの切り欠き部の反対側のＰＥＴ部１の上部に形成された空間に、樹脂封止された部品実装部８の少なくとも一部が収容され、紙素材部２及び先端紙素材部３の存在するＰＥＴ部１の上部に保護回路基板７の端部又はその端子部等が当接するように搭載される。   The protective circuit board 7 has at least a part of the resin-sealed component mounting part 8 accommodated in a space formed in the upper part of the PET part 1 on the opposite side of the notch part of the battery pack insulator. 2 and the end portion of the protective circuit board 7 or the terminal portion thereof is mounted on the PET portion 1 where the leading edge paper material portion 3 is present.

保護回路基板７の正極側の端子部の金属ＴＡＢ１０はセル６の側面に沿って延在し、該セル６の＋端子と接続され、同保護回路基板７の負極側の端子部はＰＴＣ９の素子の一方の金属プレートと接続され、ＰＴＣ９の他方の金属プレートがインシュレータの上面及び側面に沿って延在し、セル負極用穴部５に位置する−端子と接続される。   The metal TAB 10 at the positive terminal portion of the protection circuit board 7 extends along the side surface of the cell 6 and is connected to the positive terminal of the cell 6. The negative terminal portion of the protection circuit board 7 is an element of the PTC 9. The other metal plate of the PTC 9 extends along the top and side surfaces of the insulator and is connected to the negative terminal located in the cell negative hole 5.

なお、保護回路はセル６の過充電又は過放電等を防止するための回路であり、保護回路基板７とＰＴＣ９により構成されている。保護回路基板７にはセル６と対向する面に部品実装部８が配置され、反対側の面の一端部側には、図３に示すように、外部へ電力を出力し、また逆に充電のために外部から電力を入力するための＋端子、−端子及び温度異常を感知するためのＰＴＣ９と接続されたＴ端子等の金メッキの電極端子等が設けられている。   The protection circuit is a circuit for preventing overcharge or overdischarge of the cell 6 and is composed of the protection circuit board 7 and the PTC 9. The component mounting portion 8 is disposed on the surface facing the cell 6 on the protective circuit board 7, and power is output to the outside as shown in FIG. For this purpose, there are provided a positive terminal for inputting electric power from the outside, a negative terminal, a gold-plated electrode terminal such as a T terminal connected to the PTC 9 for sensing a temperature abnormality, and the like.

（動作の説明）
図１〜３に示すように、電池パック用インシュレータの紙素材に一部に切り欠きを設けることで、インシュレータの当該部分のＰＥＴ部１がセル６の面に貼り付き、保護回路基板７の部品実装部８が切り欠き部により形成される上部の空間に収まる構造となり、電池パック用インシュレータを１点の部品とし、保護回路基板７等と電池パック用インシュレータ２、セル６との間の空間を排除し、保護回路基板７とセル６の面を平行に配置する。 (Description of operation)
As shown in FIGS. 1 to 3, by providing a notch in a part of the paper material of the battery pack insulator, the PET part 1 of the part of the insulator adheres to the surface of the cell 6, and the component of the protection circuit board 7. The mounting portion 8 is structured to fit in the upper space formed by the notch, and the battery pack insulator is a single component, and the space between the protection circuit board 7 and the like, the battery pack insulator 2 and the cell 6 is defined. The surface of the protection circuit board 7 and the cell 6 is arranged in parallel.

（第２の実施形態）
以上の実施形態では、インシュレータをＰＥＴと紙素材の積層により構成した例を示したが、本発明は例えば紙素材等の絶縁シートで構成し、当該絶縁シートのセル側の一部を切り欠いて保護回路基板の部品実装部の収容スペースを確保するように構成することが可能である。 (Second Embodiment)
In the above embodiment, an example in which the insulator is configured by stacking PET and a paper material has been described. However, the present invention is configured by an insulating sheet such as a paper material, and a part of the insulating sheet on the cell side is notched. The housing space for the component mounting portion of the protection circuit board can be secured.

図４は、第２の実施形態の電池パック用インシュレータの構造を示す斜視図である。
絶縁性シートを絶縁素材１１により成形し、保護回路基板の部品実装部が位置する部分のセル側の部分の一部を切り欠いて、当該切り欠き部分の底部に両面粘着テープ等による粘着層１２を形成して電池パック用インシュレータを構成する。なお、絶縁素材及び切り欠き部の絶縁素材の厚さ等は第１の実施形態と同様な要素を考慮して選定される。 FIG. 4 is a perspective view showing the structure of the battery pack insulator of the second embodiment.
An insulating sheet is formed from the insulating material 11, a part of the cell side portion where the component mounting portion of the protection circuit board is located is cut out, and an adhesive layer 12 made of double-sided adhesive tape or the like is formed at the bottom of the cutout portion. To form a battery pack insulator. Note that the thickness of the insulating material and the insulating material of the notch is selected in consideration of the same factors as in the first embodiment.

図４に示す電池パック用インシュレータは、第１の実施形態と同様にセル面（図示せず）に搭載し、切り欠き部分の可撓性のある絶縁素材１１を上部から押下するなどによりセル面に張り付け、前記部品実装部の収容スペースを当該部分の上部に形成する。前記収容スペースに部品実装部の少なくとも一部を収容するように保護回路基板を搭載する。   The battery pack insulator shown in FIG. 4 is mounted on a cell surface (not shown) in the same manner as in the first embodiment, and the flexible insulating material 11 in the cutout portion is pressed down from above. The housing space for the component mounting portion is formed on the upper portion of the portion. A protection circuit board is mounted so as to accommodate at least a part of the component mounting portion in the accommodation space.

以上のように本発明によれば、インシュレータの一部を切り欠き、その切り欠き部により形成可能な空間に保護回路基板の部品実装部を配置することで、電池パックの内部構造の保護回路基板とインシュレータやセルの間の空間を排除でき、電池パックの一層の小型化を実現することが可能である。   As described above, according to the present invention, a part of the insulator is notched, and the component mounting part of the protection circuit board is arranged in a space that can be formed by the notch, so that the protection circuit board of the internal structure of the battery pack is provided. And the space between the insulator and the cell can be eliminated, and the battery pack can be further miniaturized.

また、インシュレータの一部を切り欠くことで、先端の同じ厚み部の存在により保護回路基板をセルの面と平行な配置を保つことができ、電池パックの保護回路基板の上面の＋端子、−端子等の複数の電極端子間の高低差を低減できる。   Also, by cutting out a part of the insulator, the protective circuit board can be kept parallel to the cell surface due to the presence of the same thickness at the tip, and the + terminal on the upper surface of the protective circuit board of the battery pack, − The height difference between a plurality of electrode terminals such as terminals can be reduced.

また、インシュレータを１点の部品とすることが可能であり、２点の部品を必要とする方法と比較すると、電池パックの製造が容易であるのみならず、保護回路基板とセルの面を平行に保つことが可能であり、保護回路基板の上面の＋端子、−端子等に対応する貫通孔を有するケースへの高精度な収容も容易となり生産性も向上する。   In addition, the insulator can be a single component, and compared to a method that requires two components, not only is the battery pack easier to manufacture, but the protective circuit board and the cell surface are parallel. And can be easily accommodated in a case having a through-hole corresponding to the positive terminal, the negative terminal, and the like on the upper surface of the protective circuit board, thereby improving productivity.

本発明の第１の実施形態の電池パック用インシュレータの構造を示す図である。It is a figure which shows the structure of the insulator for battery packs of the 1st Embodiment of this invention. 第１の実施形態のインシュレータが使用されている電池パック内部を示す図である。It is a figure which shows the inside of the battery pack in which the insulator of 1st Embodiment is used. 第１の実施形態の電池パックの上面を示す図である。It is a figure which shows the upper surface of the battery pack of 1st Embodiment. 第２の実施形態の電池パック用インシュレータの構造を示す斜視図である。It is a perspective view which shows the structure of the insulator for battery packs of 2nd Embodiment. 本発明の関連技術のインシュレータが使用された電池パック内部を示す図である。It is a figure which shows the inside of the battery pack in which the insulator of the related technology of this invention was used. 本発明の関連技術のインシュレータとスペーサが使用されている電池パック内部を示す図である。It is a figure which shows the inside of the battery pack in which the insulator and spacer of related technology of this invention are used.

符号の説明Explanation of symbols

１ ＰＥＴ部（Polyethylene Terephthalate）
２ 紙素材部
３ 先端紙素材部
４ 折り曲げ部
５ セル負極用穴部
６ セル
７ 保護回路基板
８ 部品実装部（樹脂封止部）
９ ＰＴＣ（Positive Temperature Coefficient）
１０ 金属ＴＡＢ
１１ 絶縁材料
１２ 粘着層（両面テープ）
１３、１４ 関連技術のインシュレータ
１５ スペーサ 1 PET section (Polyethylene Terephthalate)
2 Paper material part 3 Leading paper material part 4 Bending part 5 Cell negative hole part 6 Cell 7 Protection circuit board 8 Component mounting part (resin sealing part)
9 PTC (Positive Temperature Coefficient)
10 Metal TAB
11 Insulating material 12 Adhesive layer (double-sided tape)
13, 14 Insulator of related technology 15 Spacer

Claims (6)

電池のセル面と該セル面上に配置する保護回路基板との間に設置する絶縁性シートでなる電池パック用インシュレータ構造であって、
前記絶縁性シートは、前記セル面側の可撓性の絶縁性素材と、前記保護回路基板が搭載される側の可撓性の絶縁性素材とからなる積層構造を有し、
前記セル面側の可撓性の絶縁性素材は、前記保護回路基板のうち前記セル面と向かい合う面上に設けられた部品実装部を収容する切り欠き部を有し、
前記セル面側の可撓性の絶縁性素材と前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記切り欠き部内の底面に前記セル面側と接着可能な粘着層が配置されるように、該粘着層で接着されており、
前記部品実装部が前記切り欠き部に収容されたとき、前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記セル面と前記部品実装部の間に配置されるとともに、前記切り欠き部の内面と前記部品実装部の間に配置されることを特徴とする電池パック用インシュレータ構造。 A battery pack insulator structure made of an insulating sheet placed between a cell surface of a battery and a protective circuit board disposed on the cell surface,
The insulating sheet has a laminated structure composed of a flexible insulating material on the cell surface side and a flexible insulating material on the side on which the protective circuit board is mounted,
The flexible insulating material on the cell surface side has a cutout portion for accommodating a component mounting portion provided on the surface of the protective circuit board facing the cell surface,
The flexible insulating material on the cell surface side and the flexible insulating material on the side on which the protection circuit board is mounted have an adhesive layer that can be bonded to the cell surface side on the bottom surface in the notch. It is bonded with the adhesive layer so as to be arranged,
When the component mounting portion is accommodated in the cutout portion, the flexible insulating material on the side on which the protection circuit board is mounted is disposed between the cell surface and the component mounting portion, An insulator structure for a battery pack, wherein the insulator structure is disposed between an inner surface of the cutout portion and the component mounting portion. 前記セル面側の可撓性の絶縁性素材は、紙素材でなることを特徴とする請求項１に記載の電池パック用インシュレータ構造。 The insulator structure for a battery pack according to claim 1, wherein the flexible insulating material on the cell surface side is a paper material. 前記保護回路基板が搭載される側の可撓性の絶縁性素材は、ポリエチレンテレフタレートであることを特徴とする請求項１または２に記載の電池パック用インシュレータ構造。 The insulator structure for a battery pack according to claim 1 or 2, wherein the flexible insulating material on the side on which the protective circuit board is mounted is polyethylene terephthalate. 電池のセルと、
前記セルのセル面上に配置された保護回路基板と、
前記セル面と前記保護回路基板の間に設置される絶縁性シートでなる電池パック用インシュレータとを備え、
前記絶縁性シートは、前記セル面側の可撓性の絶縁性素材と、前記保護回路基板が搭載される側の可撓性の絶縁性素材とからなる積層構造を有し、
前記セル面側の可撓性の絶縁性素材は、前記保護回路基板のうち前記セル面と向かい合う面上に設けられた部品実装部を収容する切り欠き部を有し、
前記セル面側の可撓性の絶縁性素材と前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記切り欠き部内の底面に前記セル面側と接着可能な粘着層が配置されるように、該粘着層で接着されており、
前記部品実装部が前記切り欠き部に収容されたとき、前記保護回路基板が搭載される側の可撓性の絶縁性素材は、前記セル面と前記部品実装部の間に配置されるとともに、前記切り欠き部の内面と前記部品実装部の間に配置されることを特徴とする電池パック構造。 A battery cell;
A protection circuit board disposed on a cell surface of the cell;
A battery pack insulator made of an insulating sheet installed between the cell surface and the protection circuit board;
The insulating sheet has a laminated structure composed of a flexible insulating material on the cell surface side and a flexible insulating material on the side on which the protective circuit board is mounted,
The flexible insulating material on the cell surface side has a cutout portion for accommodating a component mounting portion provided on the surface of the protective circuit board facing the cell surface,
The flexible insulating material on the cell surface side and the flexible insulating material on the side on which the protection circuit board is mounted have an adhesive layer that can be bonded to the cell surface side on the bottom surface in the notch. It is bonded with the adhesive layer so as to be arranged,
When the component mounting portion is accommodated in the cutout portion, the flexible insulating material on the side on which the protection circuit board is mounted is disposed between the cell surface and the component mounting portion, A battery pack structure, wherein the battery pack structure is disposed between an inner surface of the cutout portion and the component mounting portion. 前記セル面側の可撓性の絶縁性素材は、紙素材でなることを特徴とする請求項４に記載の電池パック構造。 The battery pack structure according to claim 4, wherein the flexible insulating material on the cell surface side is a paper material. 前記保護回路基板が搭載される側の可撓性の絶縁性素材は、ポリエチレンテレフタレートであることを特徴とする請求項４または５に記載の電池パック構造。 6. The battery pack structure according to claim 4, wherein the flexible insulating material on the side on which the protection circuit board is mounted is polyethylene terephthalate.
JP2007274097A 2007-10-22 2007-10-22 Battery pack insulator structure and battery pack structure Expired - Fee Related JP5374856B2 (en)

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