JP2014220100A - Power storage module - Google Patents

Power storage module Download PDF

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Publication number
JP2014220100A
JP2014220100A JP2013098282A JP2013098282A JP2014220100A JP 2014220100 A JP2014220100 A JP 2014220100A JP 2013098282 A JP2013098282 A JP 2013098282A JP 2013098282 A JP2013098282 A JP 2013098282A JP 2014220100 A JP2014220100 A JP 2014220100A
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Japan
Prior art keywords
power storage
heat transfer
contact
transfer member
storage module
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JP2013098282A
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JP6016032B2 (en
Inventor
高橋 秀夫
Hideo Takahashi
秀夫 高橋
正邦 春日井
Masakuni Kasugai
正邦 春日井
澤田 尚
Takashi Sawada
尚 澤田
洋樹 下田
Hiroki Shimoda
洋樹 下田
正人 筒木
Masato Tsutsugi
正人 筒木
中川 謙治
Kenji Nakagawa
謙治 中川
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Priority to JP2013098282A priority Critical patent/JP6016032B2/en
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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

Abstract

PROBLEM TO BE SOLVED: To provide a power storage module in which short circuit is prevented.SOLUTION: A power storage module 10 includes power storage elements 23, 24, 25 each having lead terminals 27A, 27B, connection members 33, 38 connected with the lead terminals 27A, 27B, and a heat transfer member 52 composed of a conductive material, and arranged to come into contact with the power storage elements 23, 24, 25 thus transferring the heat generated therefrom to the outside. The heat transfer member 52 is provided with an insertion hole 56 into which a conductive pinching member 70, for electrically connecting the connection members 33, 38 and the lead terminals 27A, 27B, is inserted. The power storage module 10 has a contact suppression part 48 for preventing the hole edge 56A of the insertion hole 56 and the pinching member 70 from coming into contact with each other.

Description

本発明は、蓄電モジュールに関する。   The present invention relates to a power storage module.

内部に蓄電要素が収容されてなる蓄電素子の一例としてリチウムイオン電池やニッケル水素電池等の二次電池等が知られている。リチウムイオン電池等の二次電池は、複数個を接続することにより蓄電モジュールを構成する。このような蓄電モジュールとしては、例えば、特許文献1に記載されているものなどが知られている。   Secondary batteries such as lithium ion batteries and nickel metal hydride batteries are known as examples of power storage elements in which power storage elements are housed. Secondary batteries, such as a lithium ion battery, comprise an electrical storage module by connecting two or more. As such a power storage module, for example, the one described in Patent Document 1 is known.

特開2013−12458号公報JP2013-12458A

上記特許文献1には、端部から正極および負極のリード端子が突出する扁平形状の単電池を複数個、積層してなる蓄電モジュールが開示されている。この蓄電モジュールにおいて、積層方向において隣り合う単電池は、極性の相違する(逆極性の)リード端子同士を接続することにより直列に接続されている。
また、この蓄電モジュールにおいては、放熱性を高めるという観点から、隣り合う単電池の間には熱伝導シートが配されている。
Patent Document 1 discloses a power storage module in which a plurality of flat unit cells in which positive and negative lead terminals protrude from end portions are stacked. In this power storage module, unit cells adjacent in the stacking direction are connected in series by connecting lead terminals having different polarities (reverse polarities).
Moreover, in this electrical storage module, the heat conductive sheet is arrange | positioned between the adjacent single cells from a viewpoint of improving heat dissipation.

熱伝導部材を備える蓄電モジュールにおいて、単電池のリード端子とバスバー等の導電部材とを、導電性材料からなる挟みつけ部材で挟みつけて接続するために、熱伝導部材に、挟みつけ部材を挿通させる挿通孔を設けることがある。   In a power storage module having a heat conducting member, the sandwiching member is inserted into the heat conducting member in order to sandwich and connect the lead terminals of the unit cell and the conductive member such as a bus bar with the sandwiching member made of a conductive material. There may be provided an insertion hole.

熱伝導部材が導電性材料からなる場合、熱伝導部材に設けた挿通孔の孔縁と挟みつけ部材とが接触して、リード端子と熱伝導部材とが、挟み付け部材を介して短絡するおそれがある。   When the heat conductive member is made of a conductive material, the hole edge of the insertion hole provided in the heat conductive member and the sandwiching member may come into contact with each other, and the lead terminal and the heat conductive member may be short-circuited via the sandwiching member. There is.

本発明は上記のような事情に基づいて完成されたものであって、短絡を防止した蓄電モジュールを提供することを目的とする。   This invention is completed based on the above situations, Comprising: It aims at providing the electrical storage module which prevented the short circuit.

本発明は、リード端子を有する蓄電素子と、前記リード端子に接続される接続部材と、導電性材料からなり、前記蓄電素子に接触するように配されて当該蓄電素子から発生する熱を外部に伝導する伝熱部材と、を備える蓄電モジュールであって、前記伝熱部材には、前記接続部材と前記リード端子とを電気的に接続する導電性の挟みつけ部材を挿通させる挿通孔が設けられ、前記挿通孔の孔縁部と前記挟みつけ部材とが接触するのを防止する接触抑制部を有する蓄電モジュールである。   The present invention comprises a power storage element having a lead terminal, a connection member connected to the lead terminal, and a conductive material, and is arranged so as to be in contact with the power storage element to generate heat generated from the power storage element to the outside. A heat transfer member that conducts heat, wherein the heat transfer member is provided with an insertion hole through which a conductive clamping member that electrically connects the connection member and the lead terminal is inserted. The power storage module includes a contact suppressing portion that prevents a hole edge portion of the insertion hole from coming into contact with the clamping member.

本発明において、伝熱部材には挟みつけ部材を挿通させる挿通孔が設けられており、蓄電モジュールは、伝熱部材の挿通孔の孔縁部と挟みつけ部材とが接触するのを防止する接触抑制部を有する。したがって、本発明において、リード端子と接続部材との接続作業の際に、接触抑制部により、伝熱部材の挿通孔に挿通させた挟み付け部材と伝熱部材の挿通孔の孔縁部との接触が抑制される。その結果、本発明によれば、挟みつけ部材を介してリード端子と伝熱部材とが短絡するのを抑制することができ、短絡を防止した蓄電モジュールを提供することができる。   In the present invention, the heat transfer member is provided with an insertion hole through which the sandwiching member is inserted, and the power storage module is configured to prevent contact between the hole edge portion of the insertion hole of the heat transfer member and the sandwiching member. It has a suppression part. Therefore, in the present invention, during the connection work between the lead terminal and the connection member, the contact suppressing portion causes the pinching member inserted into the insertion hole of the heat transfer member and the hole edge portion of the insertion hole of the heat transfer member. Contact is suppressed. As a result, according to the present invention, it is possible to suppress a short circuit between the lead terminal and the heat transfer member via the sandwiching member, and it is possible to provide a power storage module that prevents a short circuit.

本発明は以下の構成であってもよい。
前記接触抑制部の高さ寸法は前記孔縁部における前記伝熱部材の厚さ寸法よりも大きく設定されていてもよい。
このような構成とすると、伝熱部材の孔縁部と挟みつけ部材との接触が確実に抑制される。
The present invention may have the following configuration.
The height dimension of the contact suppression part may be set larger than the thickness dimension of the heat transfer member at the hole edge.
With such a configuration, contact between the hole edge portion of the heat transfer member and the sandwiching member is reliably suppressed.

前記接触抑制部は前記孔縁部の全周を覆っていてもよい。
このような構成とすると伝熱部材の孔縁部と挟みつけ部材とが接触したとしても短絡が発生しないので、短絡防止効果を確実なものとすることができる。
The contact suppressing portion may cover the entire circumference of the hole edge portion.
With such a configuration, even if the hole edge portion of the heat transfer member and the sandwiching member come into contact with each other, a short circuit does not occur, so that the short circuit prevention effect can be ensured.

本発明によれば、短絡を防止した蓄電モジュールを提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the electrical storage module which prevented the short circuit can be provided.

実施形態1の蓄電モジュールの斜視図The perspective view of the electrical storage module of Embodiment 1 積層体の斜視図Perspective view of laminate 最下層の蓄電ユニットの平面図Top view of the lowest power storage unit カバーを外した状態の最下層の蓄電ユニットの平面図Top view of the lowermost power storage unit with the cover removed 最下層の蓄電ユニットの複数の蓄電素子、第1導電部材及び第2導電部材を示す斜視図The perspective view which shows the some electrical storage element of a lowermost electrical storage unit, a 1st conductive member, and a 2nd conductive member 図2のA−A線における断面図Sectional drawing in the AA line of FIG. 図3のB−B線における断面図Sectional drawing in the BB line of FIG. 伝熱部材の斜視図Perspective view of heat transfer member 図3のC−C線における断面図Sectional view taken along line CC in FIG. 図9の一部拡大断面図9 is a partially enlarged sectional view of FIG.

<実施形態1>
本発明の実施形態1を図1ないし図10によって説明する。
本実施形態の蓄電モジュール10は、例えば自動車等の車両のIntegrated Starter Generator(ISG)に用いられる。以下の説明において図1における左側を前方とし右側を後方とする。
<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS.
The power storage module 10 according to the present embodiment is used for an integrated starter generator (ISG) of a vehicle such as an automobile. In the following description, the left side in FIG.

(蓄電モジュール10)
蓄電モジュール10は、図1に示すように、全体として略直方体形状をなしており、略直方体状のケース11に複数層の蓄電ユニット22(下から順に22A,22B,22C,22D,22E,22F)が積層されて構成された積層体21が収容されており、積層体21の端子30,32がケース11を貫通して外部に導出されている。
(Power storage module 10)
As shown in FIG. 1, the power storage module 10 has a substantially rectangular parallelepiped shape as a whole, and a plurality of power storage units 22 (22A, 22B, 22C, 22D, 22E, and 22F in order from the bottom) in a substantially rectangular parallelepiped case 11. ) Are stacked, and the terminals 30 and 32 of the stacked body 21 pass through the case 11 and are led out to the outside.

(ケース11)
ケース11は、積層体21が内部に配される筒状のケース本体12と、ケース本体12の前後の開口14を閉じる閉塞部材19とを備えている。
ケース本体12は、金属製であって、積層体21が収容される箱形のロアケース13と、ロアケース13の上方を覆うアッパーケース15とを備えている。
(Case 11)
The case 11 includes a cylindrical case main body 12 in which the laminated body 21 is disposed, and a closing member 19 that closes the front and rear openings 14 of the case main body 12.
The case body 12 is made of metal, and includes a box-shaped lower case 13 in which the stacked body 21 is accommodated, and an upper case 15 that covers the lower case 13.

ロアケース13は、上方及び前方が開放されるとともに後方の一部が開放されている。
ロアケース13の底面の周縁部には、積層体21を貫通させたボルト17Aを貫通して締結するための留め孔(図示せず)が貫通形成されている。
The lower case 13 is open at the top and front and partly open at the rear.
A fastening hole (not shown) for penetrating and fastening the bolt 17 </ b> A through which the laminated body 21 is penetrated is formed in the peripheral edge portion of the bottom surface of the lower case 13.

アッパーケース15は、略長方形状であって、その中央部には、ケース11の内方側に段差状に陥没する放熱面16が形成されており、この放熱面16の内面が最上層の蓄電ユニット22Fにおける蓄電素子23,24,25と接触することで蓄電素子23,24,25の熱が放熱面16を介して外部に放散される。   The upper case 15 has a substantially rectangular shape, and a heat radiating surface 16 that is recessed in a step shape is formed on the inner side of the case 11, and the inner surface of the heat radiating surface 16 is the uppermost power storage layer. By contacting the power storage elements 23, 24, 25 in the unit 22 </ b> F, the heat of the power storage elements 23, 24, 25 is dissipated to the outside through the heat radiation surface 16.

アッパーケース15の上面の角部には、ボルト17Aとナット17Bで締結するための留め孔が貫通形成されている。
また、アッパーケース15の前端部には、閉塞部材19を係止するための係止孔18が形成されている。
Fastening holes for fastening with bolts 17 </ b> A and nuts 17 </ b> B are formed through the upper corners of the upper case 15.
A locking hole 18 for locking the closing member 19 is formed at the front end of the upper case 15.

閉塞部材19は、合成樹脂製であって、ケース11の前方および後方の開口14に嵌め入られる形状であり、前方側の閉塞部材19(後方の閉塞部材は図示しない)には、端子30,32をケース11の外部に導出する端子導出口20が形成されている。閉塞部材19の上面には、係止孔18に嵌め入れられる係止凸部(図示せず)が形成されている。   The closing member 19 is made of synthetic resin and has a shape that fits into the front and rear openings 14 of the case 11. The front side closing member 19 (the rear closing member is not shown) has terminals 30, A terminal outlet 20 for leading 32 to the outside of the case 11 is formed. On the upper surface of the closing member 19, a locking projection (not shown) that is fitted into the locking hole 18 is formed.

(積層体21)
積層体21は、図2に示すように、複数層(本実施形態では6層)の蓄電ユニット22A,22B,22C,22D,22E,22F(以下、「22A〜22F」)を上下に積み重ねて構成されている。
(Laminate 21)
As shown in FIG. 2, the stacked body 21 is formed by stacking a plurality of (in this embodiment, six layers) power storage units 22 </ b> A, 22 </ b> B, 22 </ b> C, 22 </ b> D, 22 </ b> E, 22 </ b> F (hereinafter “22A-22F”). It is configured.

(蓄電ユニット22A〜22F)
各蓄電ユニット22A〜22Fは、上下に隣り合う蓄電ユニット22A〜22Fの前後の向きが反対になるように重ねられている。各蓄電ユニット22A〜22Fは、リード端子27A,27Bを有する複数(3つ)の蓄電素子23,24,25と、蓄電素子23,24,25の正極リード端子27Aと電気的に接続される第1端子部29と、蓄電素子23,24,25の負極リード端子27Bと電気的に接続される第2端子部31と、第1端子部29と各蓄電素子23,24,25の各正極リード端子27Aとを並列に接続する第1導電部材33と、第2端子部31と各蓄電素子23,24,25の各負極リード端子27Bとを並列に接続する第2導電部材38と、複数の蓄電素子23,24,25を保持する合成樹脂製の保持部材43と、蓄電素子23,24,25の底面に沿うように配され、蓄電素子23,24,25の熱を外部に放散させる板状の伝熱部材52とを備える。
(Electric storage units 22A to 22F)
The power storage units 22A to 22F are stacked so that the front and rear directions of the power storage units 22A to 22F adjacent to each other in the vertical direction are opposite to each other. Each of the power storage units 22A to 22F is electrically connected to a plurality (three) of power storage elements 23, 24, and 25 having lead terminals 27A and 27B and a positive electrode lead terminal 27A of the power storage elements 23, 24, and 25. 1 terminal portion 29, second terminal portion 31 electrically connected to negative electrode lead terminal 27 </ b> B of power storage elements 23, 24, 25, and positive terminal lead of first terminal portion 29 and power storage elements 23, 24, 25. A first conductive member 33 that connects the terminal 27A in parallel; a second conductive member 38 that connects the second terminal portion 31 and the negative electrode lead terminals 27B of the storage elements 23, 24, and 25 in parallel; A synthetic resin holding member 43 for holding the storage elements 23, 24, and 25, and a plate disposed along the bottom surface of the storage elements 23, 24, and 25 to dissipate the heat of the storage elements 23, 24, and 25 to the outside Heat transfer member 52 Provided.

(蓄電素子23,24,25)
複数の蓄電素子23,24,25は、共に、同一構成であり、図5に示すように、扁平な形状のラミネート型の電池である。複数の蓄電素子23,24,25は、同一平面上に(扁平な面に沿うように)左右に一列に並べられて蓄電素子列を形成している。隣り合う蓄電素子23,24,25の間にはわずかな隙間が設けられている。
(Storage element 23, 24, 25)
The plurality of power storage elements 23, 24, and 25 all have the same configuration, and are flat-type laminated batteries as shown in FIG. The plurality of power storage elements 23, 24, and 25 are arranged in a line on the left and right on the same plane (to be along a flat surface) to form a power storage element array. A slight gap is provided between the adjacent power storage elements 23, 24, 25.

各蓄電素子23,24,25は、図示しない蓄電要素が収容されて端部が溶着(接合)されたラミネートフィルム28からなる容器26と、容器26の端縁28Aから外方に導出される正極及び負極のリード端子27A,27Bと、を有する。   Each of the electricity storage elements 23, 24, and 25 includes a container 26 made of a laminate film 28 in which an electricity storage element (not shown) is accommodated and an end portion is welded (joined), and a positive electrode led out from an end edge 28A of the container 26. And negative lead terminals 27A and 27B.

容器26を構成するラミネートフィルム28は、詳細は図示しないが、金属箔の外側に樹脂層を積層したものである。金属箔としてはアルミニウム箔等があげられ、樹脂層としては、ポリエチレンテレフタレート、ナイロン等があげられる。金属箔の内側(蓄電要素側)には、ポリエチレンまたはポリプロピレン等からなる熱溶着層が設けられている。   Although the details are not shown, the laminate film 28 constituting the container 26 is obtained by laminating a resin layer on the outside of the metal foil. Examples of the metal foil include aluminum foil, and examples of the resin layer include polyethylene terephthalate and nylon. A heat welding layer made of polyethylene, polypropylene, or the like is provided inside the metal foil (on the electricity storage element side).

ラミネートフィルム28の端縁28A,28Bのうち長手方向に沿った端縁28Bは、図5に示すように、容器本体26A側に折り曲げられている。   Of the edges 28A, 28B of the laminate film 28, the edge 28B along the longitudinal direction is bent toward the container body 26A as shown in FIG.

ラミネートフィルム28の端縁28A,28Bのうち短手方向に沿った一方の端縁28Aからは、正極および負極のリード端子27A,27Bが外側方向に導出されている。詳しくは、ラミネートフィルム28の短手方向の一端縁28Aにおいて、正極負極のリード端子27A,27Bは、上下に重ねて配されるラミネートフィルム28の端縁28Aの間に挟まれた状態で接合されている。   Positive and negative lead terminals 27A and 27B are led out from one end edge 28A along the short side of the end edges 28A and 28B of the laminate film 28, respectively. Specifically, at one end edge 28A in the short direction of the laminate film 28, the positive and negative electrode lead terminals 27A and 27B are joined in a state of being sandwiched between the end edges 28A of the laminate film 28 arranged one above the other. ing.

(蓄電ユニット22A〜22F間の接続構造)
第1端子部29は、最下層(1層目)の蓄電ユニット22Aについては、図3に示すように、蓄電モジュール10の全体の正極の端子30とされ、外部の電線端末の端子(図示しない)に接続される。他の層(下から2〜6層)の蓄電ユニット22B、22C,22D,22E,22Fの第1端子部29は上下方向(積層方向)に隣り合う蓄電ユニット22A,22B,22C,22D,22Eの第2端子部31と接続される。
(Connection structure between power storage units 22A to 22F)
As shown in FIG. 3, the first terminal portion 29 is the positive electrode terminal 30 of the entire power storage module 10 for the lowermost layer (first layer) power storage unit 22 </ b> A. ). The first terminal portions 29 of the power storage units 22B, 22C, 22D, 22E, and 22F in the other layers (2 to 6 layers from the bottom) are adjacent to the power storage units 22A, 22B, 22C, 22D, and 22E in the vertical direction (stacking direction). The second terminal portion 31 is connected.

なお、異なる層の第1端子部29と第2端子部31との接続は、図2に示すように、薄肉の金属板(銅板等)をクランク状に曲げて形成した接続端子42を第1端子部29及び第2端子部31の双方に超音波溶接することにより、異なる層の第1端子部29と第2端子部31とが接続されている。   As shown in FIG. 2, the first terminal portion 29 and the second terminal portion 31 of different layers are connected to the first connecting terminal 42 formed by bending a thin metal plate (copper plate or the like) into a crank shape. The first terminal portion 29 and the second terminal portion 31 of different layers are connected by ultrasonic welding to both the terminal portion 29 and the second terminal portion 31.

第2端子部31は、1〜5層の蓄電ユニット22A,22B,22C,22D,22Eについては、2〜6層の蓄電ユニット22B,22C,22D,22E,22Fの第1端子部29と接続される。なお、最上層の蓄電ユニット22Fの第2端子部31は、図2に示すように、蓄電モジュール10の全体の負極の端子32とされ、外部の電線端末の端子(図示しない)に接続される。   The 2nd terminal part 31 connects with the 1st terminal part 29 of 2-6 layers of electrical storage units 22B, 22C, 22D, 22E, 22F about the 1-5 layers of electrical storage units 22A, 22B, 22C, 22D, 22E. Is done. As shown in FIG. 2, the second terminal portion 31 of the uppermost power storage unit 22F is the negative terminal 32 of the entire power storage module 10, and is connected to a terminal (not shown) of an external electric wire terminal. .

第1端子部29と第2端子部31の間は、第1導電部材33、蓄電素子23,24,25、および第2導電部材38によって接続されており、これにより、蓄電素子23,24,25の数に応じた複数(本実施形態では3つ)の分流経路が形成されている。   The first terminal portion 29 and the second terminal portion 31 are connected by the first conductive member 33, the power storage elements 23, 24, 25, and the second conductive member 38, whereby the power storage elements 23, 24, A plurality (three in this embodiment) of diversion paths corresponding to the number of 25 are formed.

第1導電部材33(接続部材の一例)及び第2導電部材38(接続部材の一例)は、金属板材をプレスにより打ち抜いて曲げ加工を施して形成したものであり、例えば、純アルミ、アルミ合金、銅または銅合金などの導電性材料からなる。なお、以下の説明において、「導電部材33,38」とは「第1導電部材33および第2導電部材38」を意味する。   The first conductive member 33 (an example of a connecting member) and the second conductive member 38 (an example of a connecting member) are formed by punching a metal plate material and bending it, for example, pure aluminum or aluminum alloy. And made of a conductive material such as copper or copper alloy. In the following description, “conductive members 33, 38” means “first conductive member 33 and second conductive member 38”.

最下層の蓄電ユニット22Aの第1導電部材33Aは、図4および図5に示すように、第1端子部29と、第1端子部29と一体に形成され、第1端子部29に連なる平板状の第1導電部材本体35とを有し、第1導電部材本体35は、第1端子部29と各蓄電素子23,24,25の各正極リード端子27Aとを並列に接続するように分岐された複数(3つ)の第1分岐路を有する。   As shown in FIGS. 4 and 5, the first conductive member 33 </ b> A of the lowermost power storage unit 22 </ b> A is formed integrally with the first terminal portion 29 and the first terminal portion 29, and is a flat plate connected to the first terminal portion 29. The first conductive member main body 35 is branched so as to connect the first terminal portion 29 and the positive electrode lead terminals 27A of the power storage elements 23, 24, and 25 in parallel. And a plurality of (three) first branch paths.

第1端子部29は、第1導電部材本体35の端部がクランク状に屈曲されることで、第1導電部材本体35とは異なる高さに形成されている。   The first terminal portion 29 is formed at a height different from that of the first conductive member body 35 by bending the end portion of the first conductive member body 35 into a crank shape.

第1導電部材本体35は、第1端子部29から蓄電素子23,24,25の並び方向に沿って左右に延びており、その経路上で段差状に曲げ加工された曲げ部34によりわずかに高さが変えられ、曲げ部34よりも先には、延出方向の一方の側縁部に3つの蓄電素子23,24,25の正極のリード端子27Aにそれぞれ接続される接続部36A,36B,36Cが形成されている。   The first conductive member main body 35 extends from the first terminal portion 29 to the left and right along the direction in which the power storage elements 23, 24, and 25 are arranged, and is slightly formed by the bent portion 34 that is bent in a step shape on the path. The height is changed, and the connecting portions 36A and 36B are connected to the positive lead terminals 27A of the three power storage elements 23, 24, and 25 at one side edge in the extending direction before the bent portion 34, respectively. , 36C are formed.

他の蓄電ユニット22B,22C,22D,22E,22Fにおいても、第1導電部材33の曲げ部34の先には3つの蓄電素子23,24,25の正極リード端子27Aとそれぞれ接続される接続部36A,36B,36Cが形成されている。   Also in the other power storage units 22B, 22C, 22D, 22E, and 22F, connection portions connected to the positive electrode lead terminals 27A of the three power storage elements 23, 24, and 25, respectively, at the tip of the bent portion 34 of the first conductive member 33. 36A, 36B, and 36C are formed.

蓄電ユニット22の第1導電部材33の上面のうち、蓄電素子23,24,25の並び方向に沿って延びる所定の範囲(第2導電部材38が下に重なる領域)には、他の部材から第1導電部材33を絶縁するための絶縁シート60が貼り付けられている。   Of the upper surface of the first conductive member 33 of the power storage unit 22, a predetermined range extending along the direction in which the power storage elements 23, 24, and 25 are aligned (region where the second conductive member 38 overlaps) is from other members. An insulating sheet 60 for insulating the first conductive member 33 is attached.

最下層の蓄電ユニット22Aの第2導電部材38Aは、図4および図5に示すように、第2端子部31と、第2端子部31と一体に形成された第2導電部材本体40とを有し、第2導電部材本体40は、第2端子部31と各蓄電素子23,24,25の各負極の端子27Bとを並列に接続するように分岐された複数(3つ)の第2分岐路を有する。   As shown in FIGS. 4 and 5, the second conductive member 38 </ b> A of the lowermost power storage unit 22 </ b> A includes a second terminal portion 31 and a second conductive member main body 40 formed integrally with the second terminal portion 31. The second conductive member main body 40 has a plurality of (three) second branches branched so as to connect the second terminal portion 31 and the negative terminal 27B of each of the storage elements 23, 24, 25 in parallel. Has a branch.

第2導電部材本体40は、第2端子部31から蓄電素子23,24,25の並び方向に沿って左右に延びる部分を有し、その延出方向の一方の側縁部に蓄電素子23,24,25の負極の端子27Bに接続される接続部41A,41B,41Cが形成されている。また第2導電部材本体40は、その経路上で段差状に曲げ加工された曲げ部39によりわずかに高さが変えられている。   The second conductive member main body 40 has a portion extending from the second terminal portion 31 to the left and right along the direction in which the power storage elements 23, 24, and 25 are arranged, and the power storage element 23, Connection portions 41A, 41B, 41C connected to the negative terminal 27B of 24, 25 are formed. The height of the second conductive member main body 40 is slightly changed by a bent portion 39 that is bent in a step shape on the path.

他の蓄電ユニット22B,22C,22D,22E,22Fにおいても、3つの蓄電素子23,24,25の負極リード端子27Bとそれぞれ接続される接続部41A,41B,41Cが形成されている。第2導電部材38の上面のうち、蓄電素子23,24,25の並び方向に沿って延びる所定の範囲(第1導電部材33が上に重なる領域)には、第1導電部材33との間を絶縁するための図示しない絶縁シート60が貼り付けられている。   In other power storage units 22B, 22C, 22D, 22E, and 22F, connection portions 41A, 41B, and 41C connected to the negative electrode lead terminals 27B of the three power storage elements 23, 24, and 25, respectively, are formed. Of the upper surface of the second conductive member 38, a predetermined range extending in the direction in which the power storage elements 23, 24, and 25 are aligned (a region where the first conductive member 33 overlaps) is between the first conductive member 33 and the first conductive member 33. An insulating sheet 60 (not shown) for insulating the film is affixed.

なお、端部保持部材49A,49Bには、それぞれ、上方に積層される蓄電ユニット22A〜22Fを保持する保持爪37が形成されている。第1導電部材33および第2導電部材38は、後述する中央保持部材44と端部保持部材49A,49Bとに亘って保持されている。   The end holding members 49A and 49B are respectively formed with holding claws 37 for holding the power storage units 22A to 22F stacked above. The first conductive member 33 and the second conductive member 38 are held across a center holding member 44 and end holding members 49A and 49B, which will be described later.

(伝熱部材52)
伝熱部材52は、中央保持部材44及び端部保持部材49A,49Bの大きさに応じた大きさの板状の部材であって、例えば、アルミニウムやアルミニウム合金等の金属製の熱伝導性材料からなる。
(Heat transfer member 52)
The heat transfer member 52 is a plate-like member having a size corresponding to the size of the center holding member 44 and the end holding members 49A and 49B. For example, the heat transfer member 52 is a metal heat conductive material such as aluminum or aluminum alloy. Consists of.

伝熱部材52の長手方向における一対の側縁には、図8に示すように、上方に起立する起立壁53が複数(4つ)間隔をあけて形成されている。この起立壁53は、積層体21をケース11に収容したときにケース11の内壁面に接触するように配置されて、蓄電素子23,24,25から発生する熱をケース11に伝導する機能を有する。蓄電素子23,24,25から発生した熱は起立壁53を介してケース11に伝わり、ケース11の外に放熱されるようになっている。   On a pair of side edges in the longitudinal direction of the heat transfer member 52, as shown in FIG. 8, a plurality of (four) standing walls 53 are formed at an interval. The standing wall 53 is disposed so as to contact the inner wall surface of the case 11 when the laminated body 21 is accommodated in the case 11, and has a function of conducting heat generated from the power storage elements 23, 24, and 25 to the case 11. Have. Heat generated from the power storage elements 23, 24, and 25 is transmitted to the case 11 through the standing wall 53 and is radiated to the outside of the case 11.

伝熱部材52の短手方向における一対の側縁には端部保持部材を取り付けるための取付片54が2つずつ突出形成されている。各取付片54には端部保持部材49A,49Bを取り付ける取付孔54Aが形成されている。   Two attachment pieces 54 for attaching the end holding members are formed to protrude from the pair of side edges in the short direction of the heat transfer member 52. Each attachment piece 54 is formed with an attachment hole 54A for attaching the end holding members 49A and 49B.

伝熱部材52は、図6および図8に示すように中央の領域52Bが、手前側の側縁領域52Aおよび奥側の側縁領域52Cよりも高く形成されている。   As shown in FIGS. 6 and 8, the heat transfer member 52 is formed such that the central region 52B is higher than the side edge region 52A on the near side and the side edge region 52C on the back side.

伝熱部材52の中央の領域52Bには、中央保持部材44の取付片44Aを係止する保持部材取付孔57が形成されている(図6参照)。伝熱部材52の中央の領域52Bに取り付けられた中央保持部材44の区画部46には、3つの蓄電素子23,24,25が、その扁平面を伝熱部材52に接触するように載置された状態で保持されている。   In the central region 52B of the heat transfer member 52, a holding member mounting hole 57 for locking the mounting piece 44A of the central holding member 44 is formed (see FIG. 6). Three power storage elements 23, 24, and 25 are placed on the partition portion 46 of the central holding member 44 attached to the central region 52 </ b> B of the heat transfer member 52 so that the flat surfaces are in contact with the heat transfer member 52. Is held in the state.

伝熱部材52の中央の領域52Bは、段差58,59を経て、図8における手前側の側縁領域52Aおよび奥側の側縁領域52Cよりも高く形成されている。伝熱部材52の中央の領域52Bと手前側の側縁領域52Aとの間の段差59部分に沿って、ラミネートフィルム28のリード端子27A,27Bが導出される端縁28Aが配されるようになっている。伝熱部材52の中央の領域52Bと手前側の側縁領域52Aとの間の段差59はラミネートフィルム28のリード端子27A,27Bが導出される端縁28Aから離れる方向に後退した構成である。   The central region 52B of the heat transfer member 52 is formed to be higher than the side edge region 52A on the near side and the side edge region 52C on the back side in FIG. An edge 28A from which the lead terminals 27A and 27B of the laminate film 28 are led out is arranged along a step 59 portion between the central region 52B of the heat transfer member 52 and the side edge region 52A on the near side. It has become. The step 59 between the central region 52B of the heat transfer member 52 and the side edge region 52A on the near side is configured to recede in a direction away from the end edge 28A from which the lead terminals 27A and 27B of the laminate film 28 are led out.

伝熱部材52の段差59は、蓄電素子23,24,25の容器26のリード端子27A,27Bが導出される端縁28Aから離れる方向に折り曲げることにより形成された折り曲げ部59Aからなる。折り曲げ部59Aはリード端子27A,27Bの導出される容器26の端縁28Aにおいて露出する金属箔と伝熱部材52との接触に起因する短絡を防止する機能を有する。   The step 59 of the heat transfer member 52 includes a bent portion 59A formed by bending in a direction away from the end edge 28A from which the lead terminals 27A and 27B of the container 26 of the electricity storage elements 23, 24, and 25 are led out. The bent portion 59A has a function of preventing a short circuit due to contact between the metal foil exposed at the edge 28A of the container 26 from which the lead terminals 27A and 27B are led out and the heat transfer member 52.

伝熱部材52の、図8における手前側の側縁領域52Aは、第1導電部材33および第2導電部材38を保持する導電部材保持部45が配される領域であり、中央保持部材44を固定する保持部材固定孔55が両端部に設けられている。   A side edge region 52A on the near side in FIG. 8 of the heat transfer member 52 is a region where the conductive member holding portion 45 that holds the first conductive member 33 and the second conductive member 38 is disposed, and the central holding member 44 is Holding member fixing holes 55 for fixing are provided at both ends.

伝熱部材52の図8における手前側の側縁領域52Aには、蓄電素子23,24,25のリード端子27A,27Bが配されるようになっており、蓄電素子23,24,25の正極リード端子27Aと第1導電部材33の接続部36A,36B,36Cとを挟みつけて接続するための挟みつけ部材70(図10に模式的に図示)を挿通させる挿通孔56と、蓄電素子23,24,25の負極リード端子27Bと第2導電部材40の接続部41A,41B,41Cとを挟みつけて接続するための挟みつけ部材70を挿通させる挿通孔56とが設けられている。なお、図10は、リードカバー51を取り付けた状態の断面図であるが、挟みつけ部材70はリードカバー51を取り付けない状態で、図10の下方から挿入される。   The lead terminals 27A, 27B of the power storage elements 23, 24, 25 are arranged in the side edge region 52A on the near side in FIG. 8 of the heat transfer member 52, and the positive electrodes of the power storage elements 23, 24, 25 are arranged. An insertion hole 56 for inserting a clamping member 70 (schematically shown in FIG. 10) for clamping and connecting the lead terminal 27A and the connecting portions 36A, 36B, 36C of the first conductive member 33, and the storage element 23 , 24, 25 and an insertion hole 56 through which the clamping member 70 is inserted for clamping and connecting the connecting portions 41A, 41B, 41C of the second conductive member 40. FIG. 10 is a cross-sectional view of the state where the lead cover 51 is attached, but the sandwiching member 70 is inserted from below in the state where the lead cover 51 is not attached.

(保持部材43)
保持部材43は、合成樹脂等の絶縁材料からなり、図3に示すように、伝熱部材52の上に重ねて配される中央保持部材44と、伝熱部材52の左右(前後)にそれぞれ配される端部保持部材49A,49Bとを備える。
(Holding member 43)
The holding member 43 is made of an insulating material such as synthetic resin, and as shown in FIG. End holding members 49A and 49B are provided.

端部保持部材49A,49Bは、伝熱部材52の板面に沿って伝熱部材52の左右に延びており、その上面に第1導電部材33及び第2導電部材38を嵌め入れて保持する。   The end holding members 49 </ b> A and 49 </ b> B extend to the left and right of the heat transfer member 52 along the plate surface of the heat transfer member 52, and the first conductive member 33 and the second conductive member 38 are fitted and held on the upper surface. .

中央保持部材44の図3における左右の側縁からは、端部保持部材49A,49Bに重ねられる固定部47が突出しており、固定部47が中央保持部材44の上面に突出する被固定突部50に嵌められて中央保持部材44と端部保持部材49A,49Bとが固定される。   The left and right side edges of the central holding member 44 in FIG. 3 project a fixing portion 47 that is superimposed on the end holding members 49A and 49B, and the fixed protrusion 47 that protrudes from the upper surface of the central holding member 44. 50, the center holding member 44 and the end holding members 49A and 49B are fixed.

中央保持部材44は、各蓄電素子23,24,25を内側に嵌め入れて保持するために矩形に区画された区画部46と、導電部材33,38を保持する導電部材保持部45と、伝熱部材52の挿通孔56の孔縁部56Aに嵌り込み、挿通孔56の孔縁部56Aの全域を覆って、導電部材33,38とリード端子27A,27Bを接続する挟みつけ部材70が挿通孔56の孔縁部56Aに直接接触するのを抑制する接触抑制部48と、を備える。   The central holding member 44 includes a partition section 46 that is rectangularly partitioned to hold the power storage elements 23, 24, and 25 inside and a conductive member holding section 45 that holds the conductive members 33 and 38. A sandwiching member 70 that fits into the hole edge portion 56A of the insertion hole 56 of the thermal member 52 and covers the entire area of the hole edge portion 56A of the insertion hole 56 and connects the conductive members 33 and 38 and the lead terminals 27A and 27B is inserted. A contact suppressing portion 48 that suppresses direct contact with the hole edge portion 56 </ b> A of the hole 56.

各区画部46には、蓄電素子23,24,25を並べて嵌め入れることが可能である。区画部46には、伝熱部材52の保持部材取付孔57に係止される取付片44Aが下方に突出するように設けられている。   In each partition portion 46, the power storage elements 23, 24, and 25 can be fitted side by side. An attachment piece 44 </ b> A that is locked to the holding member attachment hole 57 of the heat transfer member 52 is provided in the partition portion 46 so as to protrude downward.

区画部46と導電部材保持部45との間には、蓄電素子23,24,25のリード端子27A,27Bが配されるとともに、この上にはリード端子27A,27Bを覆うように長尺状の端子カバー51が被せられている(図3を参照)。端子カバー51には、保持部材43に係止される固定爪51Aが設けられている。   Between the partition part 46 and the conductive member holding part 45, lead terminals 27A and 27B of the power storage elements 23, 24, and 25 are arranged, and a long shape is formed on the lead terminals 27A and 27B so as to cover the lead terminals 27A and 27B. The terminal cover 51 is covered (see FIG. 3). The terminal cover 51 is provided with a fixing claw 51 </ b> A that is locked to the holding member 43.

さて、区画部46と導電部材保持部45との間には、図9および図10に示すように、接触抑制部48が設けられている。接触抑制部48は、区画部46と導電部材保持部45との間の領域において、伝熱部材52の挿通孔56の孔縁部56Aに対応する位置に設けられている。   Now, as shown in FIGS. 9 and 10, a contact suppressing portion 48 is provided between the partition portion 46 and the conductive member holding portion 45. The contact suppressing portion 48 is provided at a position corresponding to the hole edge portion 56 </ b> A of the insertion hole 56 of the heat transfer member 52 in the region between the partition portion 46 and the conductive member holding portion 45.

接触抑制部48は、伝熱部材52の挿通孔56に対応する位置に挿通孔56よりも一回り小さく形成された開口部48Aと、開口部48Aの下側面から下方に突出形成され、伝熱部材52の挿通孔56の孔縁部56Aの外側面に沿って配される孔縁覆い部48Bと、から構成されている。   The contact suppressing portion 48 is formed at an opening 48A formed slightly smaller than the insertion hole 56 at a position corresponding to the insertion hole 56 of the heat transfer member 52, and protrudes downward from the lower side surface of the opening 48A. And a hole edge covering portion 48B disposed along the outer surface of the hole edge portion 56A of the insertion hole 56 of the member 52.

開口部48Aの大きさと位置は、開口部48Aの口縁部分が、伝熱部材52の挿通孔56の孔縁部56Aの全周を覆うように設定されている。接触抑制部48の孔縁覆い部48Bの高さ寸法Xは、孔縁部56Aにおける伝熱部材52の厚さ寸法Yよりも大きく設定されている(図10を参照)。   The size and position of the opening 48 </ b> A are set so that the lip portion of the opening 48 </ b> A covers the entire circumference of the hole edge 56 </ b> A of the insertion hole 56 of the heat transfer member 52. The height dimension X of the hole edge covering part 48B of the contact suppressing part 48 is set larger than the thickness dimension Y of the heat transfer member 52 in the hole edge part 56A (see FIG. 10).

中央保持部材44の接触抑制部48が伝熱部材52の挿通孔56内に嵌り込んで、一つの孔を形成するので、この孔に例えば超音波溶接で用いるホーンのアンビル(挟みつけ部材70の一例)を挿通させて、開口部48Aの上面側に配した導電部材33,38とリード端子27A,27Bとを接続する作業を行うことが可能である。挟みつけ部材70は導電性の部材であり、本実施形態ではリード端子27A,27Bの上方に配されるクリンパ(図示せず)とともに用いられる。   Since the contact suppressing portion 48 of the central holding member 44 is fitted into the insertion hole 56 of the heat transfer member 52 to form one hole, an anvil of a horn used in ultrasonic welding, for example, of the sandwiching member 70 is used in this hole. For example, it is possible to connect the conductive members 33 and 38 disposed on the upper surface side of the opening 48A and the lead terminals 27A and 27B. The sandwiching member 70 is a conductive member, and is used with a crimper (not shown) disposed above the lead terminals 27A and 27B in the present embodiment.

第1導電部材33と正極リード端子27Aとの接続および第2導電部材38と負極リード端子27Bとの接続の作業において、開口部48Aと挿通孔56により形成された孔に挿通された挟みつけ部材70は、伝熱部材52の挿通孔56の孔縁部56Aを覆う接触抑制部48と接触するが、伝熱部材52の挿通孔56の孔縁部56Aには直接接触しないので、挟みつけ部材70を介して伝熱部材52とリード端子27A,27Bとが短絡しにくい。   In the operation of connecting the first conductive member 33 and the positive electrode lead terminal 27A and connecting the second conductive member 38 and the negative electrode lead terminal 27B, the clamping member inserted through the hole formed by the opening 48A and the insertion hole 56 70 is in contact with the contact suppressing portion 48 covering the hole edge portion 56A of the insertion hole 56 of the heat transfer member 52, but is not in direct contact with the hole edge portion 56A of the insertion hole 56 of the heat transfer member 52. The heat transfer member 52 and the lead terminals 27 </ b> A and 27 </ b> B are not easily short-circuited via 70.

中央保持部材44の開口部48Aの両側には、各リード端子27A,27Bの両側に配されてリード端子27A,27B間を絶縁保護する保護壁61が設けられている。一の蓄電素子23,24,25から導出されるリード端子27A,27Bの間においては1つの保護壁61が設けられており、隣り合う蓄電素子23,24,25から導出されるリード端子27A,27Bの間には2つの保護壁61が設けられている。   On both sides of the opening 48A of the central holding member 44, protective walls 61 are provided on both sides of the lead terminals 27A and 27B to insulate and protect the lead terminals 27A and 27B. One protective wall 61 is provided between the lead terminals 27A, 27B led out from one power storage element 23, 24, 25, and the lead terminals 27A, 27A led out from the adjacent power storage elements 23, 24, 25 are provided. Two protective walls 61 are provided between 27B.

保護壁61のうち、端部に配されている保護壁61Aおよびその隣に配されている保護壁61Bには、第1導電部材33の接続部36Aまたはおよび第2導電部材の接続部41Aを固定する導電部材固定爪62が設けられている。   Among the protective walls 61, the protective wall 61A disposed at the end and the protective wall 61B disposed adjacent thereto are provided with the connecting portion 36A of the first conductive member 33 or the connecting portion 41A of the second conductive member. Conductive member fixing claws 62 to be fixed are provided.

端部から3番目に配されている2つの保護壁61Cには端子カバー51の固定爪51Aを係止するカバー係止孔63が形成されている。   A cover locking hole 63 for locking the fixing claw 51A of the terminal cover 51 is formed in the two protective walls 61C arranged third from the end.

隣り合う蓄電素子23,24,25のリード端子27A,27Bの間に設けられた2つの保護壁61C,61Dの間には導電部材保持部45に配される絶縁シート60を抜け止めする絶縁部材係止爪64が形成されている。   An insulating member that prevents the insulating sheet 60 disposed on the conductive member holding portion 45 from coming off between the two protective walls 61C, 61D provided between the lead terminals 27A, 27B of the adjacent power storage elements 23, 24, 25. A locking claw 64 is formed.

(作用および効果)
本実施形態によれば、以下の作用及び効果を奏する。
本実施形態において、伝熱部材52には挟みつけ部材70を挿通させる挿通孔56が設けられる一方、保持部材43には、伝熱部材52の挿通孔56の孔縁部56Aと挟みつけ部材70とが接触するのを防止する接触抑制部48が設けられている。したがって、本実施形態において、リード端子27A,27Bと第1および第2導電部材33,38との接続作業の際に、接触抑制部48により、伝熱部材52の挿通孔56に挿通させた挟み付け部材と伝熱部材52の挿通孔56の孔縁部56Aとの接触が抑制される。
その結果、本実施形態によれば、挟みつけ部材70を介してリード端子27A,27Bと伝熱部材52とが短絡するのを抑制することができ、短絡を防止した蓄電モジュール10を提供することができる。
(Function and effect)
According to this embodiment, the following operations and effects are achieved.
In the present embodiment, the heat transfer member 52 is provided with an insertion hole 56 through which the sandwiching member 70 is inserted, while the holding member 43 is provided with the hole edge 56 </ b> A of the insertion hole 56 of the heat transfer member 52 and the sandwiching member 70. The contact suppression part 48 which prevents that and contact is provided. Therefore, in the present embodiment, when the lead terminals 27A and 27B are connected to the first and second conductive members 33 and 38, the pin inserted through the insertion hole 56 of the heat transfer member 52 by the contact suppressing portion 48. Contact between the attaching member and the hole edge portion 56A of the insertion hole 56 of the heat transfer member 52 is suppressed.
As a result, according to the present embodiment, it is possible to suppress the short-circuit between the lead terminals 27A and 27B and the heat transfer member 52 via the sandwiching member 70, and to provide the power storage module 10 that prevents the short circuit. Can do.

また、本実施形態によれば、接触抑制部48の高さ寸法Xは孔縁部56Aにおける伝熱部材52の厚さ寸法Yよりも大きく設定されているから、伝熱部材52の孔縁部56Aと挟みつけ部材70との接触を確実に抑制することができる。   Moreover, according to this embodiment, since the height dimension X of the contact suppressing part 48 is set larger than the thickness dimension Y of the heat transfer member 52 in the hole edge part 56A, the hole edge part of the heat transfer member 52 The contact between 56A and the sandwiching member 70 can be reliably suppressed.

さらに、本実施形態によれば、接触抑制部48は孔縁部56Aの全周を覆っているから、伝熱部材52の孔縁部56Aと挟みつけ部材70とが接触したとしても短絡が発生しないので、短絡防止効果を確実なものとすることができる。   Furthermore, according to the present embodiment, since the contact suppressing portion 48 covers the entire circumference of the hole edge portion 56A, even if the hole edge portion 56A of the heat transfer member 52 and the sandwiching member 70 come into contact with each other, a short circuit occurs. Therefore, the short circuit prevention effect can be ensured.

<他の実施形態>
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
(1)上記実施形態では、高さ寸法Xが孔縁部56Aにおける伝熱部材52の厚さ寸法Yよりも大きく設定されている接触抑制部48を示したが、高さ寸法が孔縁部における伝熱部材の厚さ寸法以下の接触抑制部であってもよい。
(2)上記実施形態においては、孔縁部56Aの全周を覆っている接触抑制部48を示したが、孔縁部の一部を覆う接触抑制部であってもよい。
(3)上記実施形態では、蓄電素子23,24,25が電池である例を示したが、蓄電素子はコンデンサなどであってもよい。
(4)上記実施形態では、ISG用の蓄電モジュール10としたが、他の用途の蓄電モジュールに用いてもよい。
(5)上記実施形態では、導電部材33,38(接続部材)とリード端子27A,27Bとを電気的に接続する挟みつけ部材70として、超音波溶接で用いるホーンのアンビルの例を示したが、これに限定されない。挟みつけ部材は、スポット溶接で用いる電極などであってもよい。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above-described embodiment, the contact suppression unit 48 in which the height dimension X is set larger than the thickness dimension Y of the heat transfer member 52 in the hole edge portion 56A is shown. However, the height dimension is the hole edge portion. The contact suppression part below the thickness dimension of the heat-transfer member in may be sufficient.
(2) In the above-described embodiment, the contact suppressing portion 48 covering the entire circumference of the hole edge portion 56A is shown. However, the contact suppressing portion covering a part of the hole edge portion may be used.
(3) In the above embodiment, the example in which the power storage elements 23, 24, and 25 are batteries has been described. However, the power storage element may be a capacitor or the like.
(4) In the said embodiment, although it was set as the electrical storage module 10 for ISG, you may use for the electrical storage module of another use.
(5) In the above embodiment, an example of an anvil of a horn used in ultrasonic welding is shown as the sandwiching member 70 that electrically connects the conductive members 33 and 38 (connecting members) and the lead terminals 27A and 27B. However, the present invention is not limited to this. The sandwiching member may be an electrode used in spot welding.

10…蓄電モジュール
21…積層体
23,24,25…蓄電素子
27A…(正極)リード端子
27B…(負極)リード端子
33…第1導電部材(接続部材)
33A…(最下層の)第1導電部材
35…第1導電部材本体
36A,36B,36C…(正極リード端子との)接続部
38…第2導電部材(接続部材)
40…第2導電部材本体
41A,41B,41C…(負極リード端子との)接続部
43…保持部材
44…中央保持部材
45…導電部材保持部
46…区画部
48…接触抑制部
48A…開口部
48B…孔縁覆い部
49A…端部保持部材
49B…端部保持部材
52…伝熱部材
56…挿通孔
56A…孔縁部
70…アンビル(挟みつけ部材)
X…接触抑制部の高さ寸法
Y…接触抑制部における伝熱部材の厚さ寸法
DESCRIPTION OF SYMBOLS 10 ... Power storage module 21 ... Laminate 23, 24, 25 ... Power storage element 27A ... (positive electrode) lead terminal 27B ... (negative electrode) lead terminal 33 ... First conductive member (connection member)
33A ... (first layer) first conductive member 35 ... first conductive member body 36A, 36B, 36C ... (with positive electrode lead terminal) connecting portion 38 ... second conductive member (connecting member)
40 ... 2nd conductive member main body 41A, 41B, 41C ... Connection part (with negative electrode lead terminal) 43 ... Holding member 44 ... Center holding member 45 ... Conductive member holding part 46 ... Partition part 48 ... Contact suppression part 48A ... Opening part 48B ... Hole edge cover
49A ... end holding member 49B ... end holding member 52 ... heat transfer member 56 ... insertion hole 56A ... hole edge 70 ... anvil (clamping member)
X: Height dimension of the contact suppression part Y: Thickness dimension of the heat transfer member in the contact suppression part

Claims (3)

リード端子を有する蓄電素子と、
前記リード端子に接続される接続部材と、
導電性材料からなり、前記蓄電素子に接触するように配されて当該蓄電素子から発生する熱を外部に伝導する伝熱部材と、を備える蓄電モジュールであって、
前記伝熱部材には、前記接続部材と前記リード端子とを電気的に接続する導電性の挟みつけ部材を挿通させる挿通孔が設けられ、
前記挿通孔の孔縁部と前記挟みつけ部材とが接触するのを防止する接触抑制部を有する蓄電モジュール。
A power storage element having a lead terminal;
A connecting member connected to the lead terminal;
A heat storage module comprising a conductive material, and a heat transfer member arranged to contact the power storage element and conducting heat generated from the power storage element to the outside,
The heat transfer member is provided with an insertion hole through which a conductive clamping member that electrically connects the connection member and the lead terminal is inserted,
The electrical storage module which has a contact suppression part which prevents that the hole edge part of the said insertion hole and the said clamping member contact.
前記接触抑制部の高さ寸法は前記孔縁部における前記伝熱部材の厚さ寸法よりも大きく設定されている請求項1に記載の蓄電モジュール。 The power storage module according to claim 1, wherein a height dimension of the contact suppressing portion is set larger than a thickness dimension of the heat transfer member at the hole edge portion. 前記接触抑制部は前記孔縁部の全周を覆っている請求項1または請求項2に記載の蓄電モジュール。 The power storage module according to claim 1, wherein the contact suppressing portion covers the entire circumference of the hole edge portion.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018006043A (en) * 2016-06-28 2018-01-11 三洋電機株式会社 Battery system and electric vehicle with battery system
CN114096105A (en) * 2022-01-20 2022-02-25 国网山东省电力公司菏泽供电公司 Modular structure of battery integrated controller

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009099445A (en) * 2007-10-18 2009-05-07 Toshiba Corp Battery module and battery pack

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009099445A (en) * 2007-10-18 2009-05-07 Toshiba Corp Battery module and battery pack

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018006043A (en) * 2016-06-28 2018-01-11 三洋電機株式会社 Battery system and electric vehicle with battery system
CN114096105A (en) * 2022-01-20 2022-02-25 国网山东省电力公司菏泽供电公司 Modular structure of battery integrated controller
CN114096105B (en) * 2022-01-20 2022-04-15 国网山东省电力公司菏泽供电公司 Modular structure of battery integrated controller

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