JP2015069811A - Power storage device - Google Patents

Power storage device Download PDF

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JP2015069811A
JP2015069811A JP2013202459A JP2013202459A JP2015069811A JP 2015069811 A JP2015069811 A JP 2015069811A JP 2013202459 A JP2013202459 A JP 2013202459A JP 2013202459 A JP2013202459 A JP 2013202459A JP 2015069811 A JP2015069811 A JP 2015069811A
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connection
end plate
screw member
termination
power storage
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JP6332725B2 (en
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伸介 吉竹
Shinsuke Yoshitake
伸介 吉竹
亮太 望月
Ryota Mochizuki
亮太 望月
雄太 山本
Yuta Yamamoto
雄太 山本
村上 聡
Satoshi Murakami
聡 村上
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GS Yuasa Corp
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GS Yuasa Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a power storage device capable of maintaining a relative position between a termination member and a coupling member at a proper position even if the termination member and the coupling member are fastened by a screw member.SOLUTION: A power storage device includes a power storage element, a termination member, a coupling member and a screw member. The coupling member has a connection part overlapped on the termination member, and a beam part extending from the connection part. The connection part has a first abutting part provided at a position separated from an insertion position of a shaft part of the screw member. The termination member has a second abutting part with which the first abutting part abuts from the rotation direction of the screw member.

Description

本発明は、蓄電素子と、該蓄電素子と並んで配置される終端部材と、該終端部材に連結される連結部材とを備える蓄電装置に関する。   The present invention relates to a power storage device including a power storage element, a termination member arranged alongside the power storage element, and a connecting member coupled to the termination member.

一般的な蓄電装置の一つとして、蓄電素子と、該蓄電素子と並んで配置される終端部材と、該終端部材に連結される連結部材であって、蓄電素子と終端部材とが並ぶ方向に延びる連結部材とが設けられるものがある。連結部材は、終端部材に重ね合わされる接続部と、該接続部から延出する梁部とを有する。この種の蓄電装置では、組立の関係上、終端部材及び接続部がネジ部材によって締結される。   As one of general power storage devices, a power storage element, a termination member arranged side by side with the power storage element, and a connecting member connected to the termination member in a direction in which the power storage element and the termination member are aligned Some are provided with an extending connecting member. The connecting member includes a connection portion that is overlapped with the termination member, and a beam portion that extends from the connection portion. In this type of power storage device, the termination member and the connecting portion are fastened by a screw member because of assembly.

これに伴い、終端部材及び接続部のそれぞれには、ネジ部材を挿通させる挿通部が設けられている。ネジ部材は、軸部と、該軸部の基端に連結された頭部とを有する。軸部は、ナット又はタップ穴に螺合される。なお、ナットは、接続部に溶接されることがある。   Along with this, each of the termination member and the connection portion is provided with an insertion portion through which the screw member is inserted. The screw member has a shaft portion and a head portion connected to the proximal end of the shaft portion. The shaft portion is screwed into the nut or the tapped hole. In addition, a nut may be welded to a connection part.

終端部材及び接続部を締結する終端部材の挿通部と接続部の挿通部とが一致する位置に、終端部材及び接続部が重ね合わされる。そして、梁部が所定の適正位置に配置される。ネジ部材が終端部材の挿通部及び接続部の挿通部に挿通された上、ネジ部材の軸部がナット又はタップ穴に螺合される。これにより、終端部材及び接続部がネジ部材の頭部とナットとの間に挟まれて、終端部材及び接続部が締結される(特許文献1参照)。   The termination member and the connection portion are overlapped at a position where the insertion portion of the termination member that fastens the termination member and the connection portion matches the insertion portion of the connection portion. And a beam part is arrange | positioned in a predetermined | prescribed appropriate position. The screw member is inserted into the insertion portion of the terminal member and the insertion portion of the connection portion, and the shaft portion of the screw member is screwed into the nut or the tap hole. Thereby, a termination | terminus member and a connection part are pinched | interposed between the head of a screw member, and a nut, and a termination | terminus member and a connection part are fastened (refer patent document 1).

このようにして終端部材及び接続部が締結される際、ネジ部材の回転トルクが接続部に作用し、連結部材(接続部)がネジ部材と共回りすることがある。接続部がネジ部材と共回りすると、接続部から延出している梁部もネジ部材の軸部の軸芯を中心に回転し、所定の適正位置からずれると、連結部材が蓄電装置を構成する他の部材又は蓄電装置に隣接する他の装置の配置の妨げとなることがある。   When the termination member and the connection portion are fastened in this way, the rotational torque of the screw member may act on the connection portion, and the connecting member (connection portion) may rotate together with the screw member. When the connecting portion rotates together with the screw member, the beam portion extending from the connecting portion also rotates around the axial center of the shaft portion of the screw member, and when the connecting portion deviates from a predetermined appropriate position, the connecting member constitutes the power storage device. This may hinder the placement of other members or other devices adjacent to the power storage device.

特開2012−146657号公報JP 2012-146657 A

そこで、本発明は、かかる事情に鑑み、終端部材と連結部材とをネジ部材によって締結しても、終端部材と連結部材との相対位置を適正な位置に維持させることのできる蓄電装置を提供することを課題とする。   Therefore, in view of such circumstances, the present invention provides a power storage device that can maintain the relative position between the terminal member and the connecting member at an appropriate position even if the terminal member and the connecting member are fastened by the screw member. This is the issue.

本発明に係る蓄電装置は、蓄電素子と、該蓄電素子と並んで配置される終端部材と、該終端部材に連結される連結部材であって、蓄電素子と終端部材とが並ぶ方向に延びる連結部材と、終端部材及び連結部材を締結するネジ部材であって、軸部を有するネジ部材とを備え、連結部材は、終端部材に重ね合わされる接続部と、該接続部から延出する梁部とを有し、ネジ部材は、終端部材及び接続部を重ね合わせた方向に挿通した状態で終端部材及び接続部を締結し、接続部は、ネジ部材の軸部の挿通位置から離間した位置に設けられた第一の当接部を有し、終端部材は、ネジ部材の回転方向から第一の当接部が当接する第二の当接部を有する。   A power storage device according to the present invention includes a power storage element, a termination member arranged side by side with the power storage element, and a coupling member coupled to the termination member, the coupling element extending in a direction in which the power storage element and the termination member are aligned. A screw member that fastens the member and the termination member and the coupling member, and includes a screw member having a shaft portion, the coupling member including a connection portion superimposed on the termination member, and a beam portion extending from the connection portion The screw member fastens the termination member and the connection portion in a state where the termination member and the connection portion are inserted in the overlapping direction, and the connection portion is at a position separated from the insertion position of the shaft portion of the screw member. The termination member has a second contact portion that contacts the first contact portion from the rotation direction of the screw member.

かかる構成によれば、終端部材及び連結部材の接続部が重ね合わされたときに、接続部の第一の当接部と終端部材の第二の当接部とが係合する。このため、ネジ部材の回転トルクによって回転しようとする接続部は、第一の当接部がネジ部材の回転方向から終端部材の第二の当接部に係合することにより回り止めされており、ネジ部材と共回りしない。よって、終端部材と連結部材との相対位置が適正な位置からずれることがなく、適正な位置に維持される。そのため、連結部材が蓄電装置を構成する他の部材又は蓄電装置に隣接する他の装置の配置の妨げとなることもない。   According to this structure, when the connection part of a termination member and a connection member is piled up, the 1st contact part of a connection part and the 2nd contact part of a termination member engage. For this reason, the connection portion to be rotated by the rotational torque of the screw member is prevented from rotating by the first contact portion engaging with the second contact portion of the terminal member from the rotation direction of the screw member. Do not rotate with the screw member. Therefore, the relative position between the terminal member and the connecting member is not shifted from the proper position, and is maintained at the proper position. Therefore, the connection member does not hinder the arrangement of other members constituting the power storage device or other devices adjacent to the power storage device.

ここで、本発明に係る蓄電装置の一態様として、第一の当接部及び第二の当接部は、凹凸係合するようにしてもよい。   Here, as one aspect of the power storage device according to the present invention, the first contact portion and the second contact portion may be engaged with each other.

このようにすれば、ネジ部材の回転トルクによって回転しようとする接続部は、第一の当接部が終端部材の第二の当接部に凹凸係合することにより、確実に回り止めされる。   If it does in this way, the connection part which is going to rotate with the rotational torque of a screw member will be reliably prevented from rotating, when the 1st contact part carries out uneven engagement with the 2nd contact part of a termination member. .

また、本発明に係る蓄電装置の他態様として、第一の当接部又は第二の当接部の材料は、金属であるようにしてもよい。   As another embodiment of the power storage device according to the present invention, the material of the first contact portion or the second contact portion may be a metal.

このようにすれば、第一の当接部又は第二の当接部を高い精度で加工することができる。よって、第一の当接部と第二の当接部とがより正確な位置で係合するようになり、終端部材と連結部材とが正確な位置で回り止めされる。   If it does in this way, the 1st contact part or the 2nd contact part can be processed with high accuracy. Therefore, the first contact portion and the second contact portion are engaged at a more accurate position, and the terminal member and the connecting member are prevented from rotating at the accurate position.

以上の如く、本発明に係る蓄電装置によれば、終端部材と連結部材とをネジ部材によって締結しても、終端部材と連結部材との相対位置を適正な位置に維持させることのできるという優れた効果を奏する。   As described above, according to the power storage device of the present invention, the relative position between the termination member and the coupling member can be maintained at an appropriate position even if the termination member and the coupling member are fastened by the screw member. Has an effect.

図1は、本発明の一実施形態に係る電池モジュールの全体斜視図である。FIG. 1 is an overall perspective view of a battery module according to an embodiment of the present invention. 図2は、同実施形態に係る電池モジュールのフレームの全体斜視図である。FIG. 2 is an overall perspective view of the frame of the battery module according to the embodiment. 図3は、同フレームにおけるエンドプレート及び連結部材を締結した部分をX方向に切断した要部縦断面図である。FIG. 3 is a vertical cross-sectional view of a main part in which a portion where the end plate and the connecting member in the frame are fastened is cut in the X direction. 図4は、同フレームにおけるエンドプレート及び連結部材を締結した部分をY方向に切断した要部縦断面図である。FIG. 4 is a vertical cross-sectional view of a main part in which a portion where the end plate and the connecting member in the frame are fastened is cut in the Y direction. 図5は、同フレームにおけるエンドプレート及び連結部材を締結した部分をY方向に切断した要部縦断面図であって、一対のエンドプレート間に連結部材を挿入する過程を示す要部縦断面図である。FIG. 5 is a main part longitudinal cross-sectional view in which a portion where the end plate and the connection member are fastened in the frame is cut in the Y direction, and a main part vertical cross-sectional view showing a process of inserting the connection member between the pair of end plates. It is. 図6は、同フレームにおけるエンドプレート及び連結部材を締結した部分をY方向に切断した要部縦断面図であって、第一の当接部が突出部に係合した状態を示す要部縦断面図である。FIG. 6 is a vertical cross-sectional view of the main part of the frame where the end plate and the connecting member are fastened together in the Y direction, and shows a state in which the first contact part is engaged with the protruding part. FIG. 図7は、本発明の他の実施形態に係る電池モジュールのフレームにおけるエンドプレート及び連結部材を締結した部分を切断した要部横断面図である。FIG. 7 is a cross-sectional view of an essential part of a frame of a battery module according to another embodiment of the present invention, in which a portion where an end plate and a connecting member are fastened is cut. 図8は、本発明の他の実施形態に係る電池モジュールのフレームにおけるエンドプレート及び連結部材を締結した部分をX方向に切断した要部縦断面図である。FIG. 8 is a vertical cross-sectional view of the main part of the frame of the battery module according to another embodiment of the present invention, in which a portion where the end plate and the connecting member are fastened is cut in the X direction. 図9は、本発明の他の実施形態に係る電池モジュールのフレームにおけるエンドプレート及び連結部材を締結した部分を切断した要部横断面図である。FIG. 9 is a cross-sectional view of an essential part of a frame of a battery module according to another embodiment of the present invention, in which a portion where an end plate and a connecting member are fastened is cut. 図10は、本発明の他の実施形態に係る電池モジュールのフレームにおけるエンドプレート及び連結部材を締結した部分をY方向に切断した要部縦断面図である。FIG. 10 is a vertical cross-sectional view of a main part of a frame of a battery module according to another embodiment of the present invention, in which a portion where an end plate and a connecting member are fastened is cut in the Y direction.

以下、本発明に係る蓄電装置の一実施形態である電池モジュールについて、添付図面を参照しつつ説明する。本実施形態に係る電池モジュールは、図1に示すように、電池セル(蓄電素子)1と、該電池セル1と並んで配置されるスペーサ2と、該電池セル1及びスペーサ2を保持するフレーム3とを備える。   Hereinafter, a battery module which is an embodiment of a power storage device according to the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the battery module according to the present embodiment includes a battery cell (storage element) 1, a spacer 2 arranged side by side with the battery cell 1, and a frame that holds the battery cell 1 and the spacer 2. 3.

電池モジュールは、複数の電池セル1を有する。複数の電池セル1は、第一方向Xに一列に整列している。各電池セル1は、第一方向Xに扁平な角形電池である。各電池セル1は、互いに絶縁された正極と負極とを含む電極体(図示せず)と、該電極体が収容されるケース11と、該ケース11の上面に設けられる外部端子12とを備える。   The battery module has a plurality of battery cells 1. The plurality of battery cells 1 are arranged in a line in the first direction X. Each battery cell 1 is a rectangular battery that is flat in the first direction X. Each battery cell 1 includes an electrode body (not shown) including a positive electrode and a negative electrode which are insulated from each other, a case 11 in which the electrode body is accommodated, and an external terminal 12 provided on the upper surface of the case 11. .

スペーサ2は、隣り合う電池セル1の間に配置されている。スペーサ2は、隣り合う電池セル1のケース11の間に流路を形成する。更に、スペーサ2は、第一方向Xに一列に整列する複数の電池セル1の両側にもそれぞれ配置されている。つまり、スペーサ2は、電池セル1のケース11とフレーム3のエンドプレート4との間にも配置されている。スペーサ2は、電池セル1のケース11とエンドプレート4との間にも流路を形成する。これらの流路には、冷却媒体が流通しており、この冷却媒体は、電池セル1のケース11の側面に沿って流通して、電池セル1を冷却する。   The spacer 2 is disposed between the adjacent battery cells 1. The spacer 2 forms a flow path between cases 11 of adjacent battery cells 1. Furthermore, the spacers 2 are respectively disposed on both sides of the plurality of battery cells 1 aligned in a line in the first direction X. That is, the spacer 2 is also disposed between the case 11 of the battery cell 1 and the end plate 4 of the frame 3. The spacer 2 also forms a flow path between the case 11 of the battery cell 1 and the end plate 4. A cooling medium flows through these flow paths, and the cooling medium flows along the side surface of the case 11 of the battery cell 1 to cool the battery cell 1.

以下においては、便宜上、第一方向をX方向(各図に示された直交軸のうちのX軸方向)といい、第一方向と直交する第二方向をY方向(各図に示された直交軸のうちのY軸方向)といい、第一方向及び第二方向と直交する第三方向をZ方向(各図に示された直交軸のうちのZ軸方向)という。   In the following, for convenience, the first direction is referred to as the X direction (X-axis direction among the orthogonal axes shown in each drawing), and the second direction orthogonal to the first direction is referred to as the Y-direction (shown in each drawing). The third direction orthogonal to the first direction and the second direction is referred to as the Z direction (the Z axis direction of the orthogonal axes shown in each drawing).

フレーム3は、図1及び図2に示すように、複数の電池セル1及び複数のスペーサ2と並んで配置されるエンドプレート(終端部材)4と、該エンドプレート4に連結される連結部材5であって、電池セル1とエンドプレート4とが並ぶ方向に延びる連結部材5と、エンドプレート4及び連結部材5を締結するネジ部材6とを備える。連結部材5は、エンドプレート4に重ね合わされる接続部7と、該接続部7から延出する梁部8とを有する。エンドプレート4及び連結部材5の材料は、共に、金属であり、具体的には、溶融亜鉛メッキ鋼板(SGCC)である。   As shown in FIGS. 1 and 2, the frame 3 includes an end plate (terminating member) 4 arranged side by side with a plurality of battery cells 1 and a plurality of spacers 2, and a connecting member 5 connected to the end plate 4. And the connecting member 5 extended in the direction where the battery cell 1 and the end plate 4 are located in a line, and the screw member 6 which fastens the end plate 4 and the connecting member 5 are provided. The connecting member 5 includes a connection portion 7 that is overlaid on the end plate 4, and a beam portion 8 that extends from the connection portion 7. The materials of the end plate 4 and the connecting member 5 are both metals, specifically, hot dip galvanized steel sheet (SGCC).

フレーム3は、一対のエンドプレート4を備えている。一対のエンドプレート4は、第一方向Xにおける複数の電池セル1及び複数のスペーサ2の両側に配置される。つまり、一対のエンドプレート4は、複数の電池セル1及び複数のスペーサ2を挟んでいる。フレーム3は、複数の連結部材5を備えている。各連結部材5は、一対のエンドプレート4のそれぞれに連結されている。本実施形態に係る複数の連結部材5は、一対のエンドプレート4の間に挿入されている。また、連結部材5は、エンドプレート4の四隅から該エンドプレート4を直交する方向に延びるように配置されている。   The frame 3 includes a pair of end plates 4. The pair of end plates 4 are disposed on both sides of the plurality of battery cells 1 and the plurality of spacers 2 in the first direction X. That is, the pair of end plates 4 sandwich the plurality of battery cells 1 and the plurality of spacers 2. The frame 3 includes a plurality of connecting members 5. Each connecting member 5 is connected to each of the pair of end plates 4. The plurality of connecting members 5 according to this embodiment are inserted between the pair of end plates 4. Further, the connecting member 5 is disposed so as to extend from the four corners of the end plate 4 in a direction orthogonal to the end plate 4.

このため、フレーム3の上面には、一対のエンドプレート4の上端と一対の連結部材5(の梁部8)の上面とによって矩形状の枠が形成される。また、フレーム3の下面には、一対のエンドプレート4の下端と一対の連結部材5(の梁部8)の下面とによって矩形状の枠が形成される。フレーム3のY方向に面した側面には、一対のエンドプレート4の側端と一対の連結部材5(の梁部8)の側面とによって矩形状の枠が形成される。各連結部材5は、これらの枠を構成する一対の連結部材5(の梁部8)の面が互いに面一となるように、エンドプレート4に接続されている。   Therefore, a rectangular frame is formed on the upper surface of the frame 3 by the upper ends of the pair of end plates 4 and the upper surfaces of the pair of connecting members 5 (the beam portions 8 thereof). Further, a rectangular frame is formed on the lower surface of the frame 3 by the lower ends of the pair of end plates 4 and the lower surfaces of the pair of connecting members 5 (the beam portions 8). On the side surface facing the Y direction of the frame 3, a rectangular frame is formed by the side ends of the pair of end plates 4 and the side surfaces of the pair of connecting members 5 (the beam portions 8 thereof). Each connecting member 5 is connected to the end plate 4 so that the surfaces of the pair of connecting members 5 (the beam portions 8) constituting these frames are flush with each other.

なお、一対のエンドプレート4は、共に、同一の形状及び同一の構造を有する。4つの連結部材5は、共に、同一の形状及び同一の構造を有する。これに伴い、以下、単一のエンドプレート4及び単一の連結部材5について説明する。   The pair of end plates 4 both have the same shape and the same structure. The four connecting members 5 have the same shape and the same structure. Accordingly, the single end plate 4 and the single connecting member 5 will be described below.

エンドプレート4は、図3及び図4に示すように、エンドプレート本体41と、ネジ部材6の回転方向Aから連結部材5(の第一の当接部72)が当接する第二の当接部42とを有する。第二の当接部42の材料は、金属である。   As shown in FIGS. 3 and 4, the end plate 4 is in contact with the end plate body 41 and the second contact where the connecting member 5 (the first contact portion 72) contacts from the rotation direction A of the screw member 6. Part 42. The material of the second contact portion 42 is metal.

エンドプレート本体41は、薄板状に形成されており、Y−Z平面上におけるケース11の形状に対応して略四角形状に形成されている。エンドプレート本体41は、電池セル1に対向する第一面41aと、該第一面41aと反対側の第二面41bとを有する。   The end plate body 41 is formed in a thin plate shape, and is formed in a substantially square shape corresponding to the shape of the case 11 on the YZ plane. The end plate main body 41 has a first surface 41a facing the battery cell 1 and a second surface 41b opposite to the first surface 41a.

エンドプレート本体41は、平面状の第二の接続面43(第一の接続面73は後述する)と、ネジ部材6を挿通する挿通部44とを有する。第二の接続面43及び挿通部44は、エンドプレート本体41における連結部材5を連結する領域に設けられる。第二の接続面43は、図2及び図3に示すように、エンドプレート本体41の第一面41a側に設けられている。第二の接続面43は、エンドプレート4の四隅に設けられている(以下、このエンドプレート4の四箇所の第二の接続面43のうちの一箇所の第二の接続面43について説明する)。第二の接続面43は、連結部材5の接続部7が面接触する第一面41a上の領域である。挿通部44は、エンドプレート本体41をX方向に貫通する貫通孔であ
る。
The end plate main body 41 has a planar second connection surface 43 (the first connection surface 73 will be described later) and an insertion portion 44 through which the screw member 6 is inserted. The second connection surface 43 and the insertion portion 44 are provided in a region where the connecting member 5 in the end plate body 41 is connected. As shown in FIGS. 2 and 3, the second connection surface 43 is provided on the first surface 41 a side of the end plate body 41. The second connection surfaces 43 are provided at the four corners of the end plate 4 (hereinafter, one second connection surface 43 of the four second connection surfaces 43 of the end plate 4 will be described. ). The second connection surface 43 is a region on the first surface 41 a where the connection portion 7 of the connecting member 5 is in surface contact. The insertion portion 44 is a through hole that penetrates the end plate main body 41 in the X direction.

第二の当接部42は、第一面41aに設けられている。より具体的には、第二の当接部42は、エンドプレート本体41の第一面41aからネジ部材6の軸部61の軸芯方向Bに突出する突出部42(以下、第二の当接部と同じ符号42を用いて説明する)である。言い換えると、第二の当接部42は、挿通中心方向に突出する突出部42である。   The second contact portion 42 is provided on the first surface 41a. More specifically, the second contact portion 42 is a protruding portion 42 (hereinafter referred to as a second contact portion) that protrudes from the first surface 41 a of the end plate body 41 in the axial direction B of the shaft portion 61 of the screw member 6. This will be described using the same reference numeral 42 as the contact portion. In other words, the second contact portion 42 is a protruding portion 42 that protrudes in the insertion center direction.

突出部42は、図2乃至図4に示すように、第一面41a側に膨出して形成される。第一面41a側から見た突出部42の形状は、略円形状である。突出部42は、第二の接続面43上における、挿通部44に挿通されるネジ部材6の軸部61の軸芯Cから最も離れた位置に設けられる。つまり、突出部42は、第二の接続面43上における挿通位置から最も離れた位置に設けられる。突出部42は、頂部42aと、側面42bとを有する。側面42bは、接続部7(の側面71c)に当接する。突出部42におけるエンドプレート本体41から頂部42aまでの突出量は、ネジ部材6の回転トルクによって、第二の接続面43上をスライドする接続部7が乗り越えないような高さに設定されている。   As shown in FIGS. 2 to 4, the protrusion 42 is formed to bulge toward the first surface 41 a. The shape of the protrusion 42 viewed from the first surface 41a side is substantially circular. The protruding portion 42 is provided on the second connection surface 43 at a position farthest from the axis C of the shaft portion 61 of the screw member 6 inserted through the insertion portion 44. That is, the protrusion 42 is provided at a position farthest from the insertion position on the second connection surface 43. The protruding portion 42 has a top portion 42a and a side surface 42b. The side surface 42b abuts on the connecting portion 7 (the side surface 71c thereof). The protruding amount of the protruding portion 42 from the end plate main body 41 to the top portion 42a is set to such a height that the connecting portion 7 that slides on the second connecting surface 43 does not get over by the rotational torque of the screw member 6. .

側面42bの一部は、少なくとも接続部7の側面71cに対向している。側面42bは、第二の接続面43と交差しており、より好ましくは、第二の接続面43と直交している。また、側面42bのうちの少なくとも接続部7に対向する領域は、周方向に円弧状の曲面を有する。   A part of the side surface 42 b faces at least the side surface 71 c of the connecting portion 7. The side surface 42 b intersects the second connection surface 43, and more preferably is orthogonal to the second connection surface 43. Moreover, the area | region which opposes the connection part 7 at least among the side surfaces 42b has a circular-arc-shaped curved surface in the circumferential direction.

ネジ部材6は、図2及び図3に示すように、軸部61を有する。具体的には、ネジ部材6は、(通し)ボルト6(以下、ネジ部材と同じ符号6を用いて説明する)である。ボルト6は、軸部61と、該軸部61の基端に連結される頭部62とを有する。軸部61の先端側には、ナット9が螺合される。ナット9は、接続部7に溶接されている。そのため、ナット9は、接続部7に固定されている。ネジ部材6は、エンドプレート4及び接続部7が重ね合わされた方向から該エンドプレート4及び接続部7に挿通され、エンドプレート4及び接続部7を締結する。   As illustrated in FIGS. 2 and 3, the screw member 6 includes a shaft portion 61. Specifically, the screw member 6 is a (through) bolt 6 (hereinafter described using the same reference numeral 6 as the screw member). The bolt 6 includes a shaft portion 61 and a head portion 62 connected to the base end of the shaft portion 61. A nut 9 is screwed onto the tip end side of the shaft portion 61. The nut 9 is welded to the connection portion 7. Therefore, the nut 9 is fixed to the connecting portion 7. The screw member 6 is inserted into the end plate 4 and the connecting portion 7 from the direction in which the end plate 4 and the connecting portion 7 are overlapped, and fastens the end plate 4 and the connecting portion 7.

接続部7は、X方向における梁部8の両端に設けられる。接続部7は、梁部8から略直交する方向(Y方向)に延びる。接続部7は、複数の電池セル1及び複数のスペーサ2をX方向に位置決めする。接続部7は、接続部本体71と、ネジ部材6の軸部61の挿通位置から離間した位置に設けられた第一の当接部72とを有する。第一の当接部72の材料は、金属である。   The connection part 7 is provided at both ends of the beam part 8 in the X direction. The connecting portion 7 extends from the beam portion 8 in a direction substantially orthogonal (Y direction). The connection part 7 positions the plurality of battery cells 1 and the plurality of spacers 2 in the X direction. The connection portion 7 includes a connection portion main body 71 and a first contact portion 72 provided at a position separated from the insertion position of the shaft portion 61 of the screw member 6. The material of the first contact portion 72 is metal.

接続部本体71は、平板状に形成されている。接続部本体71は、エンドプレート4に対向する第一面71aと、該第一面71aと反対側の第二面71bと、側面71cとを有する。第一面71a及び第二面71bは、平面状に形成されており、ネジ部材6の軸部61の軸芯Cと直交する面である。側面71cは、第一面71a及び第二面71bと交差する面である。また、側面71cは、ネジ部材6の軸部61の軸芯方向Bに沿った面である。   The connection part main body 71 is formed in a flat plate shape. The connection portion main body 71 has a first surface 71a facing the end plate 4, a second surface 71b opposite to the first surface 71a, and a side surface 71c. The first surface 71 a and the second surface 71 b are formed in a planar shape and are surfaces that are orthogonal to the axis C of the shaft portion 61 of the screw member 6. The side surface 71c is a surface that intersects the first surface 71a and the second surface 71b. The side surface 71 c is a surface along the axial direction B of the shaft portion 61 of the screw member 6.

接続部本体71は、図3に示すように、エンドプレート本体41の第二の接続面43に重ね合わされる平面状の第一の接続面73と、ネジ部材6が挿通される挿通部74とを有する。第一の接続面73は、図2に示すように、エンドプレート4の第二の接続面43と面接触する面であり、接続部本体71の第一面71aに設けられる。挿通部74は、接続部本体71をX方向に貫通する貫通孔である。   As shown in FIG. 3, the connection portion main body 71 includes a planar first connection surface 73 that is superimposed on the second connection surface 43 of the end plate main body 41, and an insertion portion 74 through which the screw member 6 is inserted. Have As shown in FIG. 2, the first connection surface 73 is a surface that is in surface contact with the second connection surface 43 of the end plate 4, and is provided on the first surface 71 a of the connection portion main body 71. The insertion part 74 is a through hole that penetrates the connection part main body 71 in the X direction.

第一の当接部72は、側面71cに設けられている。第一の当接部72は、側面71c上を窪ませた凹部である。具体的には、第一の当接部72は、ボルト6の軸部61の径方向(軸芯Cに直交する方向)であって、該軸部61の軸芯Cに接近する方向に凹んだ凹部である。   The first contact portion 72 is provided on the side surface 71c. The first contact portion 72 is a recess that is recessed on the side surface 71c. Specifically, the first contact portion 72 is recessed in the radial direction of the shaft portion 61 of the bolt 6 (direction perpendicular to the shaft core C) and in the direction approaching the shaft core C of the shaft portion 61. It is a recess.

第一の当接部72の凹部の形状は、突出部42の側面42bの形状に対応している。つまり、軸部61の軸芯方向Bで切断した第一の当接部72の凹面の断面形状は、同方向で切断した突出部42の側面42bにおける該第一の当接部72に対向する領域の断面形状と同じ形状である。具体的には、第一の当接部72の凹部の形状は、円弧状であり、より具体的には、半円状である。   The shape of the concave portion of the first contact portion 72 corresponds to the shape of the side surface 42 b of the protruding portion 42. That is, the cross-sectional shape of the concave surface of the first contact portion 72 cut in the axial direction B of the shaft portion 61 is opposed to the first contact portion 72 on the side surface 42b of the protruding portion 42 cut in the same direction. The shape is the same as the cross-sectional shape of the region. Specifically, the shape of the concave portion of the first contact portion 72 is an arc shape, and more specifically, a semicircular shape.

第一の当接部72は、(軸部61の径方向において)突出部(第二の当接部)42に凹凸係合する。第一の当接部72には、突出部42が嵌り込み、突出部42の側面42bが第一の当接部72の凹部に面接触して、第一の当接部72及び突出部42が隙間なく係合する。   The first contact portion 72 engages with the projecting portion (second contact portion) 42 (in the radial direction of the shaft portion 61). The protrusion 42 is fitted into the first contact portion 72, and the side surface 42 b of the protrusion 42 is in surface contact with the recess of the first contact portion 72, so that the first contact portion 72 and the protrusion 42. Engage with no gap.

梁部8は、一対のエンドプレート4、複数の電池セル1及び複数のスペーサ2が並ぶX方向に設けられる。梁部8のY方向に切断した断面形状は、L形状をしており、梁部8は、長尺状の平面を有する、第一の板状部及び第二の板状部を有する。第一の板状部及び第二の板状部は、互いに直交する。   The beam portion 8 is provided in the X direction in which the pair of end plates 4, the plurality of battery cells 1, and the plurality of spacers 2 are arranged. The cross-sectional shape of the beam portion 8 cut in the Y direction is L-shaped, and the beam portion 8 has a first plate-like portion and a second plate-like portion having an elongated flat surface. The first plate portion and the second plate portion are orthogonal to each other.

本実施形態に係る電池モジュールは、以上の通りである。続いて、電池モジュールの製造方法について添付図面を参照しつつ説明する。   The battery module according to the present embodiment is as described above. Then, the manufacturing method of a battery module is demonstrated, referring an accompanying drawing.

まず、複数の電池セル1及び複数のスペーサ2は、図1に示す完成時と同じ整列状態に配置される。そして、この状態の複数の電池セル1及び複数のスペーサ2は、その整列方向(X方向)の両側から一対のエンドプレート4,4で挟まれて、更に同方向に加圧され、複数の電池セル1及び複数のスペーサ2、一対のエンドプレート4,4を互いに密着させる。その後、一対の連結部材5,5は、一対のエンドプレート4,4の四隅に接続部7が位置するように、Y方向又はZ方向から一対のエンドプレート4,4の間に挿入される。   First, the plurality of battery cells 1 and the plurality of spacers 2 are arranged in the same alignment state as when completed as shown in FIG. The plurality of battery cells 1 and the plurality of spacers 2 in this state are sandwiched between the pair of end plates 4 and 4 from both sides in the alignment direction (X direction), and are further pressurized in the same direction, so that the plurality of batteries The cell 1, the plurality of spacers 2, and the pair of end plates 4, 4 are brought into close contact with each other. Thereafter, the pair of connecting members 5 and 5 are inserted between the pair of end plates 4 and 4 from the Y direction or the Z direction so that the connection portions 7 are positioned at the four corners of the pair of end plates 4 and 4.

具体的には、図5に示すように、連結部材5がY方向(図5の矢印Dの方向)から一対のエンドプレート4,4の間に挿入されて、第一の当接部72が突出部(第二の当接部)42に凹凸係合するまで、接続部7の第一の接続面73とエンドプレート4の第二の接続面43とが重なった状態で、接続部7をエンドプレート4の第二の接続面43上をY方向にスライドする。   Specifically, as shown in FIG. 5, the connecting member 5 is inserted between the pair of end plates 4, 4 from the Y direction (the direction of arrow D in FIG. 5), and the first contact portion 72 is In a state where the first connection surface 73 of the connection portion 7 and the second connection surface 43 of the end plate 4 overlap each other until the protrusion (second contact portion) 42 is engaged with the projections and recesses, the connection portion 7 is Slide on the second connection surface 43 of the end plate 4 in the Y direction.

そして、図6に示すように、第一の当接部72が突出部42に凹凸係合すると、接続部7の第一の接続面73とエンドプレート4の第二の接続面43とが完全に重なり合って、エンドプレート4の挿通部44と接続部7の挿通部74とが一致する。このとき、連結部材5は、適切な位置となるように位置決めされる。具体的には、連結部材5は、梁部8の第一の板状部と第二の板状部とが略鉛直又は略水平となる位置で位置決めされる。そして、一対のエンドプレート4,4の端部と一対の連結部材5,5の梁部8,8とによってフレーム3に枠が形成され、該枠における各梁部8の一対の第一の板状部又は一対の第二の板状部が互いに面一となる。   Then, as shown in FIG. 6, when the first abutting portion 72 is engaged with the protrusion 42 in a concavo-convex manner, the first connecting surface 73 of the connecting portion 7 and the second connecting surface 43 of the end plate 4 are completely connected. The insertion portion 44 of the end plate 4 and the insertion portion 74 of the connection portion 7 coincide with each other. At this time, the connecting member 5 is positioned so as to be in an appropriate position. Specifically, the connecting member 5 is positioned at a position where the first plate-like portion and the second plate-like portion of the beam portion 8 are substantially vertical or substantially horizontal. A frame is formed on the frame 3 by the end portions of the pair of end plates 4, 4 and the beam portions 8, 8 of the pair of connecting members 5, 5, and a pair of first plates of each beam portion 8 in the frame. Or the pair of second plate portions are flush with each other.

この後、ボルト6がX方向からエンドプレート4の挿通部44と接続部7の挿通部74とに挿通され、ボルト6の軸部61の軸芯Cを中心にボルト6を回転させることにより、接続部7の内側(第二面71b側)に配置されているナット9にボルト6が螺合し、エンドプレート4と接続部7とが締結される。   Thereafter, the bolt 6 is inserted from the X direction into the insertion portion 44 of the end plate 4 and the insertion portion 74 of the connection portion 7, and by rotating the bolt 6 around the axis C of the shaft portion 61 of the bolt 6, The bolt 6 is screwed into the nut 9 arranged on the inner side (the second surface 71b side) of the connection portion 7, and the end plate 4 and the connection portion 7 are fastened.

この際、ボルト6の回転トルクによって回転しようとする接続部7は、第一の当接部72が突出部42に係合することによって、回り止めされる。このため、接続部7は、エンドプレート4の所定の位置で固定され、梁部8が傾かない。つまり、前記フレーム3の枠における各梁部8の一対の第一の板状部又は一対の第二の板状部が互いに面一のままとなる。このようにして組み立てられたフレーム3は、複数の電池セル1及び複数のスペーサ2を一体に保持する。そして、大容量かつ高電圧の電池(電池モジュール)が完成する。   At this time, the connection portion 7 that is to be rotated by the rotational torque of the bolt 6 is prevented from rotating when the first abutting portion 72 is engaged with the protruding portion 42. For this reason, the connection part 7 is fixed in the predetermined position of the end plate 4, and the beam part 8 does not incline. That is, the pair of first plate-like portions or the pair of second plate-like portions of each beam portion 8 in the frame 3 remains flush with each other. The frame 3 assembled in this way integrally holds the plurality of battery cells 1 and the plurality of spacers 2. And a large capacity and high voltage battery (battery module) is completed.

以上より、本実施形態に係る電池モジュールによれば、エンドプレート4及び連結部材5の接続部7が重ね合わされたときに、接続部7の第一の当接部72とエンドプレート4の突出部(第二の当接部)42とが係合する。このため、ボルト6の回転トルクによって回転しようとする接続部7は、第一の当接部72がボルト6の回転方向Bからエンドプレート4の突出部42に係合することにより回り止めされており、ボルト6と共回りしない。よって、エンドプレート4と連結部材5との相対位置が適正な位置からずれることがなく、適正な位置に維持させることができる。   As described above, according to the battery module according to the present embodiment, when the connection portion 7 of the end plate 4 and the connecting member 5 is overlapped, the first contact portion 72 of the connection portion 7 and the protruding portion of the end plate 4. (Second contact portion) 42 is engaged. For this reason, the connection part 7 which is going to rotate by the rotational torque of the bolt 6 is prevented from rotating when the first abutting part 72 is engaged with the protruding part 42 of the end plate 4 from the rotational direction B of the bolt 6. And does not rotate with the bolt 6. Therefore, the relative position between the end plate 4 and the connecting member 5 is not deviated from the proper position, and can be maintained at the proper position.

つまり、フレーム3に形成される枠における、各梁部8の一対の第一の板状部又は一対の第二の板状部は、互いに面一となった状態に維持されており、連結部材5が電池モジュールを構成する他の部材又は電池モジュールに隣接する他の装置の配置の妨げとならない。そのため、給気ダクト及び排気ダクトを連結部材5の各梁部8に密着させて、冷却空気を供給することができ、連結部材5の上面に載置する制御モジュールが傾くこともなく、電池モジュール自体を載置する場合においても電池モジュール全体が傾かない。   That is, the pair of first plate-like portions or the pair of second plate-like portions of each beam portion 8 in the frame formed on the frame 3 is maintained in a state of being flush with each other, and the connecting member 5 does not interfere with the arrangement of other members constituting the battery module or other devices adjacent to the battery module. Therefore, the air supply duct and the exhaust duct can be brought into close contact with each beam portion 8 of the connecting member 5 to supply cooling air, and the control module placed on the upper surface of the connecting member 5 does not tilt, and the battery module Even when the device itself is placed, the entire battery module does not tilt.

また、ボルト6の回転トルクによって回転しようとする接続部7は、第一の当接部72がエンドプレート4の突出部42に凹凸係合することにより、確実に回り止めされる。   Further, the connection portion 7 that is to be rotated by the rotational torque of the bolt 6 is reliably prevented from rotating by the first contact portion 72 engaging with the protrusion 42 of the end plate 4 in an uneven manner.

また、第一の当接部72又は突出部(第二の当接部)42の材料が金属であるため、第一の当接部72又は突出部42を高い精度で加工することができる。よって、第一の当接部72と突出部42とがより正確な位置で係合するようになり、エンドプレート4と連結部材5とが正確な位置で回り止めされる。   Moreover, since the material of the 1st contact part 72 or the protrusion part (2nd contact part) 42 is a metal, the 1st contact part 72 or the protrusion part 42 can be processed with a high precision. Therefore, the first contact portion 72 and the protruding portion 42 are engaged at a more accurate position, and the end plate 4 and the connecting member 5 are prevented from rotating at the accurate position.

また、ボルト6によってエンドプレート4及び接続部7が締結される際、軸部61の軸芯Cを中心とするボルト6の回転トルクが接続部7に加わって、エンドプレート4の突出部42及び接続部7の第一の当接部72が軸部61の軸芯Cから最も離間した位置で係合する。そのため、突出部42に加わる力は、突出部42をエンドプレート4の他の位置で第一の当接部72に係合する場合と比較して、低く抑えることができる。よって、突出部42は、強度の低い材質で形成されたエンドプレート4にも形成することができるようになる。また、第一の当接部72に加わる力も第一の当接部72を接続部7の他の位置で突出部42に係合する場合と比較して、低く抑えることができる。よって、第一の当接部72は、強度の低い材質で形成された接続部7にも形成することができるようになる。   Further, when the end plate 4 and the connecting portion 7 are fastened by the bolt 6, the rotational torque of the bolt 6 around the axis C of the shaft portion 61 is applied to the connecting portion 7, and the protruding portion 42 of the end plate 4 and The first contact portion 72 of the connecting portion 7 engages at a position farthest from the axis C of the shaft portion 61. Therefore, the force applied to the protruding portion 42 can be kept low compared to the case where the protruding portion 42 is engaged with the first contact portion 72 at another position of the end plate 4. Therefore, the protrusion 42 can be formed also on the end plate 4 formed of a material having low strength. In addition, the force applied to the first contact portion 72 can be suppressed to a lower level than when the first contact portion 72 is engaged with the protruding portion 42 at another position of the connecting portion 7. Therefore, the first contact portion 72 can also be formed on the connection portion 7 formed of a low strength material.

なお、本発明に係る蓄電装置は、上記した実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々な変更を加え得ることは勿論である。また、下記した変更例に係る構成や方法等を任意に選択して、上記した実施形態に係る構成や方法等に採用してもよいことは勿論である。   Note that the power storage device according to the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention. Of course, any of the configurations, methods, and the like according to the modifications described below may be arbitrarily selected and employed in the configurations, methods, and the like according to the above-described embodiments.

上記実施形態においては、エンドプレート4が本発明に係る終端部材であったが、これに限定されるものではない。例えば、終端部材は、電池セル1とエンドプレート4との間に配置されているスペーサ2であってもよい。つまり、第二の当接部42がスペーサ2に設けられていてもよい。   In the said embodiment, although the end plate 4 was the termination | terminus member which concerns on this invention, it is not limited to this. For example, the termination member may be a spacer 2 disposed between the battery cell 1 and the end plate 4. That is, the second contact portion 42 may be provided on the spacer 2.

また、上記実施形態においては、エンドプレート4及び連結部材5が溶融亜鉛メッキ鋼板であったが、これに限定されるものではない。例えば、終端部材及び連結部材の材料は、銅やSUS、アルミニウム等の金属であってもよいし、樹脂であってもよい。また、終端部材及び連結部材は、ニッケルメッキ鋼板や錫メッキ鋼板を加工したものであってもよい。   Moreover, in the said embodiment, although the end plate 4 and the connection member 5 were the hot dip galvanized steel plates, it is not limited to this. For example, the material of the termination member and the connecting member may be a metal such as copper, SUS, or aluminum, or may be a resin. Moreover, the termination | terminus member and the connection member may process the nickel plating steel plate and the tin plating steel plate.

また、上記実施形態においては、ネジ部材6は、通しボルト6であったが、これに限定されるものではない。具体的には、ネジ部材は、おねじを周面に形成した軸部を有する。ネジ部材は、軸部の軸芯を中心に回転させ、ナットに螺合させることにより、終端部材及び連結部材が締結されるものであればよい。例えば、ネジ部材には、小ネジも含まれる。   Moreover, in the said embodiment, although the screw member 6 was the through bolt 6, it is not limited to this. Specifically, the screw member has a shaft portion in which a male screw is formed on the peripheral surface. The screw member may be any member as long as the terminal member and the connecting member are fastened by rotating around the shaft core of the shaft portion and screwing the screw member into the nut. For example, the screw member includes a machine screw.

また、ネジ部材は、ねじ込みボルトであってもよい。具体的には、ネジ部材は、おねじを周面に形成した軸部を有する。ネジ部材は、軸部の軸芯を中心に回転させ、タップ穴が形成された部材に螺合させることにより、終端部材及び連結部材が締結されるものであってもよい。   The screw member may be a screw bolt. Specifically, the screw member has a shaft portion in which a male screw is formed on the peripheral surface. The screw member may be one in which the terminal member and the connecting member are fastened by rotating around the shaft core of the shaft portion and screwing the screw member into the member in which the tap hole is formed.

更に、ネジ部材は、植込みボルトであってもよい。具体的には、ネジ部材は、軸芯方向の両端の周面におねじを形成した軸部を有する。ネジ部材は、軸部の軸芯を中心に回転させ、タップ穴が形成された部材に軸部の一端を螺合させ、軸部の他端にナットを螺合させることにより、終端部材及び連結部材が締結されるものであってもよい。   Furthermore, the screw member may be a stud. Specifically, the screw member has a shaft portion in which screws are formed on the peripheral surfaces at both ends in the axial direction. The screw member is rotated about the shaft core of the shaft portion, and one end of the shaft portion is screwed to the member having the tapped hole, and a nut is screwed to the other end of the shaft portion, thereby connecting the terminal member and the screw member. The member may be fastened.

また、上記実施形態においては、エンドプレート4及び接続部7は、X方向に面する面同士を重ね合わされていたが、これに限定されるものではない。例えば、図7に示すように、エンドプレート(終端部材)4及び連結部材5の(第一の)接続部107は、Y方向に面する面同士を重ね合わされていてもよい。   Moreover, in the said embodiment, although the end plate 4 and the connection part 7 overlapped the surfaces which face a X direction, it is not limited to this. For example, as shown in FIG. 7, the (first) connecting portions 107 of the end plate (terminating member) 4 and the connecting member 5 may be superposed on the surfaces facing in the Y direction.

この場合、エンドプレート4は、エンドプレート本体41と、(第一の)接続部107に重ね合わされる第二の接続部145とを備える。第二の接続部145は、エンドプレート本体41と直交するように形成される。第二の接続部145は、突出部(第二の当接部)42を有する。   In this case, the end plate 4 includes an end plate main body 41 and a second connection portion 145 that is superimposed on the (first) connection portion 107. The second connection portion 145 is formed to be orthogonal to the end plate body 41. The second connection portion 145 has a protruding portion (second contact portion) 42.

連結部材5は、エンドプレート4の第二の接続部145に重ね合わされる第一の接続部107と、該第一の接続部107から延出する梁部108とを備える。第一の接続部107は、エンドプレート4の第二の接続部145に重ね合わされる接続面73(上記実施形態における第一の接続面に相当)を有する。梁部108は、第一の接続部107の一端から該接続面73に沿う方向(X方向)に延出している。第一の接続部107は、第一の当接部72を有する。第一の接続部107及び第二の接続部145には、ネジ部材6を挿通する挿通部44,74も設けられている。   The connecting member 5 includes a first connecting portion 107 that is overlapped with the second connecting portion 145 of the end plate 4, and a beam portion 108 that extends from the first connecting portion 107. The first connection portion 107 has a connection surface 73 (corresponding to the first connection surface in the above-described embodiment) superimposed on the second connection portion 145 of the end plate 4. The beam portion 108 extends from one end of the first connection portion 107 in a direction along the connection surface 73 (X direction). The first connection portion 107 has a first contact portion 72. The first connecting portion 107 and the second connecting portion 145 are also provided with insertion portions 44 and 74 through which the screw member 6 is inserted.

このため、ネジ部材6がY方向から第二の接続部145の挿通部44と第一の接続部107の挿通部74とに挿通され、ネジ部材6の軸部61の軸芯Cを中心にネジ部材6を回転させることにより、第一の接続部107の内側(第二面71b側)に配置されているナット9にネジ部材6が螺合し、第一の接続部107及び第二の接続部145が締結される。この際、ネジ部材6の回転トルクによって回転しようとする第一の接続部107は、第一の当接部72が突出部42に係合することにより、回り止めされている。このため、第一の接続部107は、エンドプレート4の所定の位置で固定され、梁部108が傾くことはない。   For this reason, the screw member 6 is inserted through the insertion portion 44 of the second connection portion 145 and the insertion portion 74 of the first connection portion 107 from the Y direction, with the axis C of the shaft portion 61 of the screw member 6 as the center. By rotating the screw member 6, the screw member 6 is screwed into the nut 9 disposed on the inner side (second surface 71 b side) of the first connection portion 107, and the first connection portion 107 and the second connection portion 107. The connection part 145 is fastened. At this time, the first connecting portion 107 to be rotated by the rotational torque of the screw member 6 is prevented from rotating by the first contact portion 72 engaging with the protruding portion 42. For this reason, the 1st connection part 107 is fixed in the predetermined position of the end plate 4, and the beam part 108 does not incline.

また、上記実施形態においては、接続部7は、一対のエンドプレート4の内側に配置されていたが、これに限定されるものではない。例えば、図8に示すように、接続部7は、一対のエンドプレート4の外側(第二面41b側)に配置されていてもよい。また、図9に示すように、第一の接続部107は、一対のエンドプレート4の第二の接続部145の外側(第二面41b側)に配置されていてもよい。   Moreover, in the said embodiment, although the connection part 7 was arrange | positioned inside a pair of end plate 4, it is not limited to this. For example, as illustrated in FIG. 8, the connection portion 7 may be disposed on the outer side (second surface 41 b side) of the pair of end plates 4. Further, as shown in FIG. 9, the first connection portion 107 may be disposed outside the second connection portion 145 (on the second surface 41 b side) of the pair of end plates 4.

また、上記実施形態において、突出部42の第一面41a側から見た形状が略円形状に形成されていた。しかし、これに限定されるものではない。例えば、突出部は、環状に形成されていてもよいし、直線状や曲線状にエンドプレート本体41から突出した突条であってもよい。   Moreover, in the said embodiment, the shape seen from the 1st surface 41a side of the protrusion part 42 was formed in the substantially circular shape. However, it is not limited to this. For example, the protrusion may be formed in an annular shape, or may be a protrusion that protrudes from the end plate body 41 in a linear or curved shape.

また、上記実施形態においては、接続部7の第一の当接部72がボルト6の軸部61の軸芯Cから直交する方向であって、該軸芯Cから離間する方向に窪む凹状の凹部であり、エンドプレート4の突出部(第二の当接部)42がボルト6の軸部61の軸芯Cから直交する方向であって、該軸芯Cから離間する方向に突出した凸状の凸部であった。しかし、これに限定されるものではない。例えば、図10に示すように、接続部7の第一の当接部272が凸状の凸部であって、エンドプレート4の突出部(第二の当接部)242の側面242bが凹状の凹部であってもよい。   Moreover, in the said embodiment, the 1st contact part 72 of the connection part 7 is the direction orthogonal to the axial center C of the axial part 61 of the volt | bolt 6, and is a concave shape recessed in the direction away from this axial center C. The protruding portion (second abutting portion) 42 of the end plate 4 protrudes in a direction orthogonal to the axis C of the shaft portion 61 of the bolt 6 and away from the axis C. It was a convex part. However, it is not limited to this. For example, as shown in FIG. 10, the first contact portion 272 of the connecting portion 7 is a convex convex portion, and the side surface 242b of the protruding portion (second contact portion) 242 of the end plate 4 is concave. It may be a recess.

また、上記実施形態においては、挿通部44が貫通孔であった。しかし、これに限定されるものではない。例えば、挿通部は、ネジ部材の軸部の挿通位置を含む部分を切り欠いた切り欠き部であってもよい。   Moreover, in the said embodiment, the insertion part 44 was a through-hole. However, it is not limited to this. For example, the insertion portion may be a notch portion in which a portion including the insertion position of the shaft portion of the screw member is notched.

また、上記実施形態においては、ナット9は、接続部7に溶接されて固定されていた。しかし、これに限定されるものではない。例えば、ナット9は、接続部7に固定されていなくてもよい。   Moreover, in the said embodiment, the nut 9 was welded to the connection part 7, and was being fixed. However, it is not limited to this. For example, the nut 9 may not be fixed to the connection portion 7.

また、上記実施形態においては、蓄電素子が電池セル1であったが、これに限定されるものではない。例えば、蓄電素子は、種々の二次電池、その他、一次電池や、電気二重層キャパシタ等のキャパシタであってもよい。そして、蓄電素子の種類や大きさ(容量)は任意である。   Moreover, in the said embodiment, although the electrical storage element was the battery cell 1, it is not limited to this. For example, the storage element may be various secondary batteries, other primary batteries, or capacitors such as electric double layer capacitors. And the kind and magnitude | size (capacity | capacitance) of an electrical storage element are arbitrary.

1…電池セル(蓄電素子)、2…スペーサ、3…フレーム、4…エンドプレート(終端部材)、5…連結部材、6…ボルト(ネジ部材)、7…接続部、8…梁部、9…ナット、11…ケース、12…外部端子、41…エンドプレート本体、41a…第一面、41b…第二面、42…突出部(第二の当接部)、42a…頂部、42b…側面、43…第二の接続面、44…挿通部、61…軸部、62…頭部、71…接続部本体、71a…第一面、71b…第二面、71c…側面、72…第一の当接部、73…第一の接続面、74…挿通部、107…第一の接続部、108…梁部、145…第二の接続部、242…突出部(第二の当接部)、242b…側面、272…第一の当接部、A…(ボルトの)回転方向、B…(ボルトの軸部の)軸芯方向、C…軸芯、D…(連結部材の)挿入方向、X…第一方向、Y…第二方向、Z…第三方向   DESCRIPTION OF SYMBOLS 1 ... Battery cell (electric storage element), 2 ... Spacer, 3 ... Frame, 4 ... End plate (terminating member), 5 ... Connection member, 6 ... Bolt (screw member), 7 ... Connection part, 8 ... Beam part, 9 ... Nut, 11 ... Case, 12 ... External terminal, 41 ... End plate body, 41a ... First surface, 41b ... Second surface, 42 ... Protrusion (second contact portion), 42a ... Top, 42b ... Side 43 ... second connection surface 44 ... insertion portion 61 ... shaft portion 62 ... head portion 71 ... connection portion body 71a ... first surface 71b ... second surface 71c ... side surface 72 ... first 73 ... first connection surface, 74 ... insertion portion, 107 ... first connection portion, 108 ... beam portion, 145 ... second connection portion, 242 ... projection portion (second contact portion) ) 242b ... side surface, 272 ... first contact portion, A ... rotational direction of the bolt (B), axial direction of the axial center of the bolt shaft portion, ... axial center, (connecting member) D ... insertion direction, X ... first direction, Y ... second direction, Z ... third direction

Claims (3)

蓄電素子と、
該蓄電素子と並んで配置される終端部材と、
該終端部材に連結される連結部材であって、前記蓄電素子と前記終端部材とが並ぶ方向に延びる連結部材と、
前記終端部材及び前記連結部材を締結するネジ部材であって、軸部を有するネジ部材と
を備え、
前記連結部材は、前記終端部材に重ね合わされる接続部と、該接続部から延出する梁部とを有し、
前記ネジ部材は、前記終端部材及び前記接続部を重ね合わせた方向に挿通した状態で前記終端部材及び前記接続部を締結し、
前記接続部は、前記ネジ部材の前記軸部の挿通位置から離間した位置に設けられた第一の当接部を有し、
前記終端部材は、前記ネジ部材の回転方向から前記第一の当接部が当接する第二の当接部を有する
蓄電装置。
A storage element;
A termination member arranged side by side with the electricity storage element;
A connecting member connected to the terminal member, the connecting member extending in a direction in which the power storage element and the terminal member are aligned;
A screw member for fastening the terminal member and the connecting member, the screw member having a shaft portion;
The connecting member has a connection portion that is overlaid on the termination member, and a beam portion that extends from the connection portion,
The screw member fastens the termination member and the connection portion in a state where the termination member and the connection portion are inserted in a superimposed direction,
The connection portion has a first contact portion provided at a position spaced from the insertion position of the shaft portion of the screw member,
The power storage device, wherein the termination member includes a second contact portion that contacts the first contact portion from a rotation direction of the screw member.
前記第一の当接部及び前記第二の当接部は、凹凸係合する
請求項1に記載の蓄電装置。
The power storage device according to claim 1, wherein the first contact portion and the second contact portion engage with each other in a concave-convex manner.
前記第一の当接部又は前記第二の当接部の材料は、金属である
請求項1又は請求項2に記載の蓄電装置。
The power storage device according to claim 1, wherein a material of the first contact portion or the second contact portion is a metal.
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JPWO2019065033A1 (en) * 2017-09-29 2020-11-05 三洋電機株式会社 Power supply
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