JP2013054869A

JP2013054869A - Assembled battery and manufacturing method of the same

Info

Publication number: JP2013054869A
Application number: JP2011191122A
Authority: JP
Inventors: Yasuhei Koyama; 泰平小山; Masashi Shudo; 正志首藤; Nobumitsu Tada; 伸光田多; Norihito Togashi; 法仁冨樫; Kenji Sato; 憲治佐藤
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 2011-09-01
Filing date: 2011-09-01
Publication date: 2013-03-21
Anticipated expiration: 2031-09-01
Also published as: JP5931376B2

Abstract

PROBLEM TO BE SOLVED: To obtain, as an example, an assembled battery more hardly causing disadvantage.SOLUTION: The assembled battery of an embodiment includes: a case; a battery; a press member; a bus bar; and a cover. The case has an opening and a housing part. A plurality of batteries having respective terminals are housed in the housing part and overlapped such that respective terminals are located at end parts all positioned on the same side. The press member is located at one side in the housing part in an overlapping direction of the batteries and elastically presses the batteries toward the other side of the overlapping direction. The bus bar electrically connects the terminals. The cover is fixed to the case and covers the opening.

Description

本発明の実施形態は、組電池およびその製造方法に関する。 Embodiments described herein relate generally to an assembled battery and a manufacturing method thereof.

従来、厚さ方向に重ねた複数の電池（単位電池）を二枚のエンドプレートと拘束バンドとで一体化した組電池が知られている。 Conventionally, an assembled battery in which a plurality of batteries (unit batteries) stacked in the thickness direction are integrated by two end plates and a restraining band is known.

特開２００１−３１３０１３号公報JP 2001-313013 A

この種の組電池では、一例として、電池の膨張や収縮等で組電池の外形寸法が変化するため取り扱いが面倒になるなどの問題が生じる場合があった。 In this type of assembled battery, as an example, there are cases in which the external dimensions of the assembled battery change due to the expansion or contraction of the battery, which causes troublesome handling.

本発明の実施形態にかかる組電池は、ケースと、電池と、押部材と、バスバーと、カバーと、を備える。ケースは、開口部および収容部を有した。複数の電池は、収容部内に収容され、それぞれ端子を有し、当該端子が同じ側の端部に位置された状態で重ねられた。押部材は、収容部内で複数の電池の重なり方向の一方側に位置され、当該重なり方向の他方側に向けて複数の電池を弾性的に押す。バスバーは、端子を電気的に接続した。カバーは、ケースに固定され、開口部を覆った。 An assembled battery according to an embodiment of the present invention includes a case, a battery, a pressing member, a bus bar, and a cover. The case had an opening and a receiving part. Several batteries were accommodated in the accommodating part, each had a terminal, and the said terminal was piled up in the state located in the edge part of the same side. The pressing member is positioned on one side in the overlapping direction of the plurality of batteries in the accommodating portion, and elastically presses the plurality of batteries toward the other side in the overlapping direction. The bus bar electrically connected terminals. The cover was fixed to the case and covered the opening.

図１は、一実施形態にかかる組電池の一例が示された斜視図である。FIG. 1 is a perspective view illustrating an example of an assembled battery according to an embodiment. 図２は、一実施形態にかかる組電池の一例が示された分解斜視図である。FIG. 2 is an exploded perspective view illustrating an example of an assembled battery according to an embodiment. 図３は、図１のＸＹ平面に沿った面における組電池の断面図である。3 is a cross-sectional view of the assembled battery in a plane along the XY plane of FIG. 図４は、図１のＹＺ平面に沿った面における組電池の断面図である。FIG. 4 is a cross-sectional view of the assembled battery in a plane along the YZ plane of FIG. 図５は、一実施形態にかかる組電池の組み立てにおける一工程の一例が示された斜視図である。FIG. 5 is a perspective view illustrating an example of one step in assembling the assembled battery according to the embodiment. 図６は、一実施形態にかかる組電池の組み立てにおける図５より後の一工程の一例が示された斜視図である。FIG. 6 is a perspective view illustrating an example of one step after FIG. 5 in the assembly of the assembled battery according to the embodiment. 図７は、一実施形態にかかる組電池の組み立てにおける図６より後の一工程の一例が示された斜視図である。FIG. 7 is a perspective view showing an example of one step after FIG. 6 in the assembly of the assembled battery according to the embodiment. 図８は、一実施形態にかかる組電池の組み立てにおける図７より後の一工程の一例が示された斜視図である。FIG. 8 is a perspective view illustrating an example of one step after FIG. 7 in the assembly of the assembled battery according to the embodiment. 図９は、一実施形態にかかる組電池の組み立てにおける図８より後の一工程の一例が示された斜視図である。FIG. 9 is a perspective view illustrating an example of one step after FIG. 8 in the assembly of the assembled battery according to the embodiment. 図１０は、一実施形態にかかる組電池に含まれる押部材の一変形例が示された斜視図である。FIG. 10 is a perspective view illustrating a modification of the pressing member included in the assembled battery according to the embodiment. 図１１は、一実施形態にかかる組電池に含まれる押部材の別の変形例が示された斜視図である。FIG. 11 is a perspective view illustrating another modified example of the pressing member included in the assembled battery according to the embodiment. 図１２は、一実施形態にかかる組電池に含まれる押部材のさらに別の変形例が示された斜視図である。FIG. 12 is a perspective view showing still another modified example of the pressing member included in the assembled battery according to the embodiment.

以下の例示的な実施形態および変形例には、同様の構成要素が含まれている。よって、以下では、同様の構成要素には共通の符号が付されるとともに、重複する説明が省略される。また、各図では、説明の便宜上、方向（Ｘ方向、Ｙ方向、Ｚ方向）が示されている。Ｘ方向、Ｙ方向、およびＺ方向は、相互に直交している。 The following exemplary embodiments and variations include similar components. Therefore, below, the same code | symbol is attached | subjected to the same component, and the overlapping description is abbreviate | omitted. In each figure, directions (X direction, Y direction, Z direction) are shown for convenience of explanation. The X direction, the Y direction, and the Z direction are orthogonal to each other.

組電池１は、直列または並列に接続された複数の電池４（単電池、単位電池、図１，２等参照）を有し、一例としては、二次電池（蓄電池、充電式電池）として構成されうる。また、組電池１は、種々の装置や、機械、設備等に設置されうる。一例として、組電池１は、自動車（車両）等の移動体や家庭用のテレビや商用のＰＯＳ（point of sales）システムに電力を供給する定置型の電源装置に搭載されうる。 The assembled battery 1 has a plurality of batteries 4 (unit cells, unit batteries, see FIGS. 1 and 2 etc.) connected in series or in parallel, and as an example, is configured as a secondary battery (storage battery, rechargeable battery). Can be done. The assembled battery 1 can be installed in various devices, machines, facilities, and the like. As an example, the assembled battery 1 can be mounted on a stationary power supply device that supplies power to a mobile object such as an automobile (vehicle), a home television, or a commercial POS (point of sales) system.

図１，２に例示されるように、組電池１は、ケース２とカバー（蓋、覆部）３とを備えている。ケース２は、本実施形態では、一例として、直方体状に構成され、一方向（本実施形態ではＹ方向、図２の上方）に開放されている。ケース２は、底壁（第一の壁部）２ａと、相互に対向した二つの側壁（第二の壁部、立壁）２ｂと、相互に対向した二つの端壁（第三の壁部、立壁）２ｃと、を有している。底壁２ａは、矩形状（例えば長方形状）の板状に形成されている。また、底壁２ａは、ＸＺ平面に沿って延びている。側壁２ｂは、矩形状（例えば長方形状）の板状に形成されている。また、側壁２ｂは、底壁２ａの短手方向（Ｚ方向）の端部に接続され、底壁２ａと交叉する方向（本実施形態では一例として直交する方向、Ｙ方向、ＸＹ平面）に沿って延びている。端壁２ｃは、矩形状（例えば長方形状）の板状に形成され、底壁２ａの長手方向（Ｘ方向）の端部に接続されている。また、端壁２ｃは、底壁２ａと交叉する方向（本実施形態では一例として直交する方向、Ｙ方向、ＹＺ平面）に沿って延びている。また、側壁２ｂは、隣接する端壁２ｃと接続されている。ケース２には、底壁２ａ、二つの側壁２ｂ、および二つの端壁２ｃによって、直方体状の収容部２ｄが形成されている。収容部２ｄの開口部（縁部、開口縁、開口端）２ｅは、カバー３で覆われる。ケース２は、一例としては、金属材料（鉄系材料等）で構成される。 As illustrated in FIGS. 1 and 2, the assembled battery 1 includes a case 2 and a cover (lid, cover) 3. In the present embodiment, the case 2 is formed in a rectangular parallelepiped shape as an example, and is opened in one direction (Y direction in the present embodiment, upward in FIG. 2). The case 2 includes a bottom wall (first wall portion) 2a, two side walls (second wall portion, standing wall) 2b opposite to each other, and two end walls (third wall portion, opposite to each other). Standing wall) 2c. The bottom wall 2a is formed in a rectangular (for example, rectangular) plate shape. The bottom wall 2a extends along the XZ plane. The side wall 2b is formed in a rectangular (for example, rectangular) plate shape. Further, the side wall 2b is connected to an end portion in the short direction (Z direction) of the bottom wall 2a, and extends along a direction crossing the bottom wall 2a (in this embodiment, an orthogonal direction, a Y direction, an XY plane as an example). It extends. The end wall 2c is formed in a rectangular (for example, rectangular) plate shape, and is connected to an end portion in the longitudinal direction (X direction) of the bottom wall 2a. Further, the end wall 2c extends along a direction intersecting with the bottom wall 2a (in this embodiment, as an example, a direction orthogonal to each other, the Y direction, and the YZ plane). The side wall 2b is connected to the adjacent end wall 2c. In the case 2, a rectangular parallelepiped housing portion 2d is formed by the bottom wall 2a, the two side walls 2b, and the two end walls 2c. The opening 2 (edge, opening edge, opening end) 2 e of the housing portion 2 d is covered with the cover 3. For example, the case 2 is made of a metal material (iron-based material or the like).

側壁２ｂには、開口部（第二の開口部）２ｆが設けられている。開口部２ｆは、例えば、矩形状の貫通孔として形成されうる。また、本実施形態では、一例として、それぞれの側壁２ｂに、複数（本実施形態では三つ）の開口部２ｆが設けられている。この開口部２ｆによって、ケース２がより軽量に構成されるとともに、収容部２ｄの通気性が高められている。なお、開口部２ｆは、端壁２ｃや底壁２ａに設けることも可能である。 The side wall 2b is provided with an opening (second opening) 2f. The opening 2f can be formed as, for example, a rectangular through hole. In the present embodiment, as an example, a plurality of (three in the present embodiment) openings 2f are provided on each side wall 2b. The opening 2f makes the case 2 lighter and enhances the air permeability of the housing 2d. The opening 2f can be provided in the end wall 2c or the bottom wall 2a.

また、側壁２ｂには、ケース２と支持部材１０とを結合する結合具としてのねじ１３が通る開口部（例えば貫通孔）２ｇが設けられている。本実施形態では、一例として、それぞれの側壁２ｂに、複数（本実施形態では四つ）の開口部２ｇが設けられている。なお、開口部２ｇは、端壁２ｃに設けることも可能である。 Further, the side wall 2b is provided with an opening (for example, a through hole) 2g through which a screw 13 as a coupler for coupling the case 2 and the support member 10 passes. In the present embodiment, as an example, a plurality (four in the present embodiment) of openings 2g are provided on each side wall 2b. The opening 2g can be provided in the end wall 2c.

カバー３は、矩形状（例えば長方形状）の板状に形成されている。本実施形態では、カバー３の周縁部と、開口部２ｅとが、結合する。一例として、カバー３の周縁部と、開口部２ｅとが、スナップフィット機構（図示されず）を介して結合される。カバー３は、一例としては、合成樹脂材料で構成される。また、本実施形態では、一例として、基板１２が、インサート成形によって、カバー３内に埋められている。換言すれば、基板１２が、カバー３を構成する材料で覆われている。なお、基板１２または基板１２に設けられた部品（例えば端子等）の少なくとも一部は、カバー３から露出することができる。 The cover 3 is formed in a rectangular (for example, rectangular) plate shape. In the present embodiment, the peripheral edge of the cover 3 and the opening 2e are joined. As an example, the peripheral edge of the cover 3 and the opening 2e are coupled via a snap fit mechanism (not shown). For example, the cover 3 is made of a synthetic resin material. In the present embodiment, as an example, the substrate 12 is embedded in the cover 3 by insert molding. In other words, the substrate 12 is covered with the material constituting the cover 3. Note that at least a part of the substrate 12 or a component (eg, a terminal) provided on the substrate 12 can be exposed from the cover 3.

ケース２には、複数の電池４が収容されている。電池４は、本実施形態では、一例として、扁平な直方体状の外観を呈している。電池４は、その厚さ方向（本実施形態ではＸ方向）の視線では、矩形状（例えば長方形状）の外観を呈している。そして、複数の電池４は、収容部２ｄ内で、電池４の厚さ方向に重ねられた状態に配置されている。電池４には、端子４ｂが設けられている。端子４ｂは、複数の電池４で同じ側の端部（本実施形態では、長手方向の端部、Ｙ方向の端部、開口部２ｅ側の端部）４ａに設けられている。そして、複数の電池４は、端子４ｂが同じ側の端部４ａに位置された状態で、重ねられている。本実施形態では、複数の電池４の重なり方向は、複数の電池４を厚さ方向に重ねる方向である収容部２ｄの長手方向（Ｘ方向）である。すなわち、複数の電池４の重なり方向は、収容部２ｄの開放方向（Ｙ方向）とは交叉している（直交している）。 A plurality of batteries 4 are accommodated in the case 2. In the present embodiment, the battery 4 has a flat rectangular parallelepiped appearance as an example. The battery 4 has a rectangular appearance (for example, a rectangular shape) when viewed in the thickness direction (X direction in the present embodiment). And the some battery 4 is arrange | positioned in the state accumulated in the thickness direction of the battery 4 in the accommodating part 2d. The battery 4 is provided with a terminal 4b. The terminals 4b are provided at the end portions on the same side of the plurality of batteries 4 (in this embodiment, end portions in the longitudinal direction, end portions in the Y direction, and end portions on the opening 2e side) 4a. And the some battery 4 is piled up in the state in which the terminal 4b was located in the edge part 4a of the same side. In the present embodiment, the overlapping direction of the plurality of batteries 4 is the longitudinal direction (X direction) of the housing portion 2d, which is the direction in which the plurality of batteries 4 are stacked in the thickness direction. That is, the overlapping direction of the plurality of batteries 4 intersects (is orthogonal to) the opening direction (Y direction) of the housing portion 2d.

また、本実施形態では、収容部２ｄ内では、エンドプレート（部材、端部材、板状部材）６，９が、複数の電池４を厚さ方向に挟んでいる。エンドプレート６，９は、収容部２ｄの重なり方向に沿った寸法と、収容部２ｄに収容される収容物（例えば電池４等）の積層された寸法との差を調整する所謂スペーサやシム等として機能することができる。なお、エンドプレート６，９のうち少なくともいずれか一方（例えば、収容部２ｄ内に後で挿入するもの）は、くさび状に構成することができるし、複数に分割して構成することもできる。エンドプレート６，９は、例えば、金属材料や合成樹脂材料で構成される。 In the present embodiment, end plates (members, end members, plate-like members) 6 and 9 sandwich the plurality of batteries 4 in the thickness direction in the housing portion 2d. The end plates 6 and 9 are so-called spacers, shims or the like that adjust the difference between the dimension along the overlapping direction of the accommodating part 2d and the dimension in which the contents (for example, the battery 4) accommodated in the accommodating part 2d are stacked. Can function as. It should be noted that at least one of the end plates 6 and 9 (for example, one to be inserted later in the housing portion 2d) can be formed in a wedge shape, or can be divided into a plurality. The end plates 6 and 9 are made of, for example, a metal material or a synthetic resin material.

また、収容部２ｄ内で厚さ方向に隣接した二つの電池４の間には、介在部材（スペーサ、板部材、プレート、薄板）８が介在している。本実施形態では、一例として、介在部材８は、電池４の厚さ方向、すなわち複数の電池４の重なり方向（Ｘ方向）からの視線での電池４の縁部（周縁部）４ｄに対応して設けられている。具体的に、介在部材８は、四つの矩形板状の角部（第一部分）８ｂと、二つの角部８ｂ間に亘る四つの帯板状の辺部（第二部分）８ａとを有し、全体としては枠状（矩形枠状）に形成されている。また、角部８ｂおよび辺部８ａは、いずれも、電池４の厚さ方向、すなわち複数の電池４の重なり方向（Ｘ方向）に薄い、扁平な形状（板状、薄板状）に形成されている。ただし、本実施形態では、角部８ｂの厚さが、辺部８ａの厚さより大きい。したがって、図３に示されるように、電池４と辺部８ａとの間には隙間ｇが形成される。また、上述したように、本実施形態では、介在部材８は、電池４の縁部４ｄに対応して設けられている。よって、厚さ方向（Ｘ方向）に隣接した二つの電池４の中央部（介在部材８が設けられた周縁部より内側の部分）同士の間には、介在部材８は存在せず、隙間ｇより大きな隙間（図示されず）が設けられている。よって、本実施形態では、二つの電池４間に、隙間が設けられるため、収容部２ｄ内での通気性が高まりやすく、電池４の温度上昇が抑制されやすい。また、一例としては、電池４に膨張が生じた場合に、隣接した二つの電池４の中央部間の隙間（介在部材８の枠内の空間）で当該膨張を吸収することができる。よって、一例としては、組電池１の全体としての膨張を抑制しやすくなる。また、介在部材８は、少なくとも電池４に対して絶縁性を有する。具体的には、例えば、介在部材８を、絶縁性を有した材料（例えば合成樹脂材料等）で構成してもよいし、介在部材８の表面に、絶縁性を有した被覆層を設けてもよい。なお、辺部８ａおよび隙間ｇの少なくとも一部は、ケース２の開口部２ｆを介して露出する。 An interposition member (spacer, plate member, plate, thin plate) 8 is interposed between the two batteries 4 adjacent in the thickness direction in the housing portion 2d. In the present embodiment, as an example, the interposition member 8 corresponds to the edge portion (peripheral portion) 4d of the battery 4 in the line of sight from the thickness direction of the battery 4, that is, the overlapping direction (X direction) of the plurality of batteries 4. Is provided. Specifically, the interposition member 8 has four rectangular plate-shaped corner portions (first portions) 8b and four strip-shaped side portions (second portions) 8a extending between the two corner portions 8b. The whole is formed in a frame shape (rectangular frame shape). In addition, each of the corner portion 8b and the side portion 8a is formed in a thin and flat shape (plate shape, thin plate shape) in the thickness direction of the battery 4, that is, the overlapping direction (X direction) of the plurality of batteries 4. Yes. However, in this embodiment, the thickness of the corner portion 8b is larger than the thickness of the side portion 8a. Therefore, as shown in FIG. 3, a gap g is formed between the battery 4 and the side portion 8a. Further, as described above, in the present embodiment, the interposition member 8 is provided corresponding to the edge 4 d of the battery 4. Therefore, the interposition member 8 does not exist between the central portions of the two batteries 4 adjacent to each other in the thickness direction (X direction) (the portion inside the peripheral edge portion where the interposition member 8 is provided), and the gap g A larger gap (not shown) is provided. Therefore, in this embodiment, since a gap is provided between the two batteries 4, the air permeability in the housing portion 2 d is likely to increase, and the temperature rise of the battery 4 is easily suppressed. As an example, when expansion occurs in the battery 4, the expansion can be absorbed by a gap (a space in the frame of the interposed member 8) between the central portions of the two adjacent batteries 4. Therefore, as an example, the expansion of the assembled battery 1 as a whole can be easily suppressed. Further, the interposition member 8 is insulative with respect to at least the battery 4. Specifically, for example, the interposed member 8 may be made of an insulating material (for example, a synthetic resin material), or an insulating coating layer is provided on the surface of the interposed member 8. Also good. Note that at least part of the side portion 8a and the gap g is exposed through the opening 2f of the case 2.

また、本実施形態では、収容部２ｄ内に、押部材５Ａが収容されている。押部材５Ａは、複数の電池４の重なり方向の一方側（本実施形態では、一例として、図２の左側）に位置され、複数の電池４を重なり方向の他方側に向けて弾性的に押す。本実施形態では、押部材５Ａは、一例として、複数の電池４の重なり方向（Ｘ方向）の一方側の端部に位置された電池４（本実施形態では、一例として、図２の左端側の電池４）とエンドプレート９およびケース２の端壁２ｃとの間に位置される。本実施形態では、押部材５Ａを設けることにより、一例としては、押部材５Ａ（押圧部５ｂ）の弾性変形（弾性的な伸縮）の範囲内で、複数の電池４の重なり方向における寸法ばらつきを吸収しやすくなる。また、電池４が膨張したり収縮したりしたような場合にあっても、押部材５Ａ（押圧部５ｂ）の弾性変形（弾性的な伸縮）の範囲内で、複数の電池４の重なり方向の長さの寸法変化を吸収しやすくなる。よって、一例としては、組電池１の全体としての寸法変化を抑制しやすくなる。 In the present embodiment, the pressing member 5A is accommodated in the accommodating portion 2d. The pressing member 5A is positioned on one side in the overlapping direction of the plurality of batteries 4 (in this embodiment, as an example, the left side in FIG. 2), and elastically pushes the plurality of batteries 4 toward the other side in the overlapping direction. . In the present embodiment, the pressing member 5A is, for example, the battery 4 positioned at one end in the overlapping direction (X direction) of the plurality of batteries 4 (in the present embodiment, the left end side in FIG. 2 as an example). The battery 4) is located between the end plate 9 and the end wall 2c of the case 2. In the present embodiment, by providing the pressing member 5A, as an example, within the range of elastic deformation (elastic expansion and contraction) of the pressing member 5A (pressing portion 5b), dimensional variations in the overlapping direction of the plurality of batteries 4 are caused. Easy to absorb. Even if the battery 4 expands or contracts, the overlapping direction of the plurality of batteries 4 is within the range of elastic deformation (elastic expansion and contraction) of the pressing member 5A (pressing portion 5b). It becomes easy to absorb the dimensional change of the length. Therefore, as an example, it becomes easy to suppress the dimensional change of the assembled battery 1 as a whole.

押部材５Ａには、複数の押圧部５ｂが設けられている。本実施形態では、押圧部５ｂは、一例として、板状に構成されたベース部５ａの面５ｅに突出した突出部として設けられている。また、少なくとも押圧部５ｂ（本実施形態では、押部材５Ａ全体）は、弾性部材（例えば、ゴムや、合成樹脂材料等）で構成されている。そして、押部材５Ａが収容部２ｄ内に入れられた状態で、押圧部５ｂは、複数の電池４の重なり方向に圧縮され、その圧縮による弾性的な反発力として、複数の電池４を押す力を生じさせる。このように、複数の押圧部５ｂを設けることで、一例としては、押圧部が一つである場合に比べて、個々の押圧部５ｂが生じる力をより小さくすることができる。よって、一例としては、押圧部５ｂをより小さくあるいは薄く構成することができ、ひいては、押部材５Ａをより小さくあるいはより薄く構成しやすい。 The pressing member 5A is provided with a plurality of pressing portions 5b. In this embodiment, the press part 5b is provided as a protrusion part which protruded on the surface 5e of the base part 5a comprised by plate shape as an example. In addition, at least the pressing portion 5b (in this embodiment, the entire pressing member 5A) is made of an elastic member (for example, rubber, synthetic resin material, or the like). Then, in a state where the pressing member 5A is put in the housing portion 2d, the pressing portion 5b is compressed in the overlapping direction of the plurality of batteries 4, and a force that presses the plurality of batteries 4 as an elastic repulsive force due to the compression. Give rise to In this way, by providing the plurality of pressing portions 5b, as an example, the force generated by each pressing portion 5b can be made smaller than in the case where there is one pressing portion. Therefore, as an example, the pressing portion 5b can be configured to be smaller or thinner, and as a result, the pressing member 5A can be configured to be smaller or thinner.

また、本実施形態では、押圧部５ｂは、一例として、ベース部５ａの角部５ｄを含む縁部（周縁部、辺部、端部）５ｃに沿って設けられている。本実施形態のように、相互に隣接する二つの電池４の縁部４ｄ（辺部、端部、角部４ｃを含む、図４参照）間に介在部材８が設けられた場合、押部材５Ａによる押圧力は、電池４の縁部４ｄに作用する。したがって、本実施形態のように押圧部５ｂを電池４の縁部４ｄに対応して設けることにより、押圧部５ｂをより効率よく配置することが可能となる。 Moreover, in this embodiment, the press part 5b is provided along the edge part (peripheral part, side part, edge part) 5c containing the corner | angular part 5d of the base part 5a as an example. When the interposition member 8 is provided between the edge parts 4d (including the side part, the end part, and the corner part 4c, see FIG. 4) of the two batteries 4 adjacent to each other as in the present embodiment, the pressing member 5A. The pressing force by acts on the edge 4 d of the battery 4. Therefore, by providing the pressing portion 5b corresponding to the edge 4d of the battery 4 as in this embodiment, the pressing portion 5b can be arranged more efficiently.

さらに、本実施形態では、収容部２ｄ内に、押部材（第二の押部材）５Ｂが収容されている。押部材５Ｂは、複数の電池４の重なり方向と交叉する方向（本実施形態では、一例として、重なり方向と直交する方向、Ｙ方向）の一方側（本実施形態では、一例として、収容部２ｄの底部側、底壁２ａ側、図２の下側）に位置され、複数の電池４を交叉する方向の他方側（本実施形態では、一例として、収容部２ｄの開放側、カバー３側、図２の上側）に向けて弾性的に押す。 Furthermore, in this embodiment, the pressing member (second pressing member) 5B is accommodated in the accommodating portion 2d. The pressing member 5B is provided on one side (in this embodiment, as an example, in the direction perpendicular to the overlapping direction, in the Y direction) intersecting with the overlapping direction of the plurality of batteries 4 (in this embodiment, as an example, the accommodating portion 2d). The bottom side, the bottom wall 2a side, the lower side of FIG. 2, and the other side in the direction of crossing the plurality of batteries 4 (in this embodiment, as an example, the open side of the housing portion 2d, the cover 3 side, Push elastically toward the upper side of FIG.

押部材５Ｂには、複数の押圧部（第二の押圧部）５ｂが設けられている。押部材５Ｂの押圧部５ｂは、押部材５Ａの押圧部５ｂと同様に、一例として、板状に構成されたベース部５ａの面５ｅに突出した突出部として設けられている。また、少なくとも押圧部５ｂ（本実施形態では、押部材５Ｂ全体）は、弾性部材（例えば、ゴムや、合成樹脂材料等）で構成されている。そして、押部材５Ｂが収容部２ｄ内に入れられた状態で、押圧部５ｂは、複数の電池４の重なり方向と交叉する方向に圧縮され、その圧縮による弾性的な反発力として、複数の電池４を押す力を生じさせる。このように、複数の押圧部５ｂを設けることで、一例としては、押圧部が一つである場合に比べて、個々の押圧部５ｂが生じる力をより小さくすることができる。よって、一例としては、押圧部５ｂをより小さくあるいは薄く構成することができ、ひいては、押部材５Ｂをより小さくあるいはより薄く構成しやすい。 The pressing member 5B is provided with a plurality of pressing portions (second pressing portions) 5b. As with the pressing portion 5b of the pressing member 5A, the pressing portion 5b of the pressing member 5B is provided as a protruding portion that protrudes from the surface 5e of the base portion 5a configured as a plate, for example. In addition, at least the pressing portion 5b (in this embodiment, the entire pressing member 5B) is made of an elastic member (for example, rubber, synthetic resin material, or the like). Then, in a state in which the pressing member 5B is put in the housing portion 2d, the pressing portion 5b is compressed in a direction crossing the overlapping direction of the plurality of batteries 4, and a plurality of batteries are used as an elastic repulsive force due to the compression. The force which pushes 4 is produced. In this way, by providing the plurality of pressing portions 5b, as an example, the force generated by each pressing portion 5b can be made smaller than in the case where there is one pressing portion. Therefore, as an example, the pressing portion 5b can be configured to be smaller or thinner, and as a result, the pressing member 5B can be configured to be smaller or thinner.

また、押部材５Ｂの押圧部５ｂは、全ての電池４に対応して設けられている。すなわち、図２，３に示されるように、各電池４につき一つ以上の押部材５Ｂの押圧部５ｂが対応して設けられている。本実施形態では、一例として、電池４に押圧力を与える押圧部５ｂの数（本実施形態では、一例として、五個）は、複数（本実施形態では、一例として、全て）の電池４について同じである。よって、本実施形態では、押圧部５ｂから複数の電池４に作用する押圧力を均等化して、電池４がずれるのを抑制することができる。なお、押部材５Ｂでは、押圧部５ｂのベース部５ａの面５ｅにおける設置密度は、面５ｅにおける電池４に対向する領域のほぼ全域で、ほぼ一定である。 Further, the pressing portion 5 b of the pressing member 5 B is provided corresponding to all the batteries 4. That is, as shown in FIGS. 2 and 3, one or more pressing members 5 B of the pressing member 5 B are provided corresponding to each battery 4. In the present embodiment, as an example, the number of pressing portions 5b that apply a pressing force to the batteries 4 (in the present embodiment, five as an example) is a plurality (all in the present embodiment as an example) of the batteries 4. The same. Therefore, in this embodiment, it is possible to equalize the pressing force acting on the plurality of batteries 4 from the pressing portion 5b, and to suppress the battery 4 from shifting. In the pressing member 5B, the installation density on the surface 5e of the base portion 5a of the pressing portion 5b is substantially constant over almost the entire region facing the battery 4 on the surface 5e.

また、本実施形態では、組電池１は、一例として、複数の電池４を支持する支持部材７，１０を備えている。支持部材７は、本実施形態では、一例として、収容部２ｄ内に収容されている。支持部材７は、複数の電池４に対して、底壁２ａ側に位置される。すなわち、支持部材７は、底壁２ａと複数の電池４との間に位置される。また、支持部材７は、複数の電池４を、端子４ｂの反対側から支持し、当該端子４ｂの反対側の複数の電池４の端部を覆っている。一方、支持部材１０は、複数の電池４に対して、カバー３側（開口部２ｅ側）に位置される。すなわち、支持部材１０は、カバー３と複数の電池４との間に位置される。また、支持部材１０は、複数の電池４を、端子４ｂ側から支持し、当該端子４ｂ側の端部４ａを覆っている。 Moreover, in this embodiment, the assembled battery 1 is provided with the supporting members 7 and 10 which support the some battery 4 as an example. In this embodiment, the support member 7 is accommodated in the accommodating part 2d as an example. The support member 7 is positioned on the bottom wall 2 a side with respect to the plurality of batteries 4. That is, the support member 7 is positioned between the bottom wall 2 a and the plurality of batteries 4. The support member 7 supports the plurality of batteries 4 from the opposite side of the terminal 4b and covers the ends of the plurality of batteries 4 on the opposite side of the terminal 4b. On the other hand, the support member 10 is positioned on the cover 3 side (opening 2e side) with respect to the plurality of batteries 4. That is, the support member 10 is positioned between the cover 3 and the plurality of batteries 4. The support member 10 supports the plurality of batteries 4 from the terminal 4b side and covers the end 4a on the terminal 4b side.

支持部材７は、本実施形態では、一例として、底壁（第一の壁部）７ａと、相互に対向した二つの側壁（第二の壁部、立壁）７ｂと、を有している。支持部材７は、Ｕ字状の断面を有した部分が複数の電池４の重なり方向に延びてＵ字状の溝を有した構成を備えている。底壁７ａは、矩形状（例えば長方形状）の板状に形成されている。また、底壁７ａは、ＸＺ平面に沿って延びている。側壁７ｂは、矩形状（例えば長方形状）の板状に形成されている。また、側壁７ｂは、底壁７ａの短手方向（Ｚ方向）の端部に接続され、底壁７ａと交叉する方向（本実施形態では一例として直交する方向、Ｙ方向、ＸＹ平面）に沿って延びている。図４に示されるように、底壁７ａの電池４側の面７ｃには、押部材５Ｂが乗せられている。また、側壁７ｂの内面７ｄは、底壁７ａに近付くにつれて側壁２ｂから離間する傾斜面である。よって、電池４は、収容部２ｄに収容される際に、内面７ｄにガイドされ、所定の位置（図４に示す設置位置）により円滑に移動することができる。また、図２〜４を参照すれば明らかとなるように、本実施形態では、支持部材７の底壁７ａおよび二つの側壁７ｂによって、複数の電池４の重なり方向（Ｘ方向）に沿って延びた溝が構成されている。よって、複数の電池４は、温度変化や、膨張、収縮等に伴って、あるいは電池４を組み付ける際に、この支持部材７に沿って複数の電池４の重なり方向に沿って移動することができる。すなわち、支持部材７は、ガイド部の一例である。また、支持部材７は、少なくとも電池４に対して絶縁性を有する。具体的には、例えば、支持部材７を、絶縁性を有した材料（例えば合成樹脂材料等）で構成してもよいし、支持部材７の表面に、絶縁性を有した被覆層を設けてもよい。 In the present embodiment, the support member 7 includes, as an example, a bottom wall (first wall portion) 7a and two side walls (second wall portion, standing wall) 7b facing each other. The support member 7 has a configuration in which a portion having a U-shaped cross section extends in the overlapping direction of the plurality of batteries 4 and has a U-shaped groove. The bottom wall 7a is formed in a rectangular (for example, rectangular) plate shape. The bottom wall 7a extends along the XZ plane. The side wall 7b is formed in a rectangular (for example, rectangular) plate shape. Further, the side wall 7b is connected to an end portion in the short direction (Z direction) of the bottom wall 7a, and extends along a direction crossing the bottom wall 7a (in this embodiment, an orthogonal direction, a Y direction, an XY plane as an example). It extends. As shown in FIG. 4, a pressing member 5B is placed on the surface 7c of the bottom wall 7a on the battery 4 side. Further, the inner surface 7d of the side wall 7b is an inclined surface that is separated from the side wall 2b as it approaches the bottom wall 7a. Therefore, when the battery 4 is accommodated in the accommodating portion 2d, the battery 4 is guided by the inner surface 7d and can be smoothly moved by a predetermined position (installation position shown in FIG. 4). 2 to 4, in the present embodiment, the bottom wall 7 a and the two side walls 7 b of the support member 7 extend along the overlapping direction (X direction) of the plurality of batteries 4. A groove is formed. Therefore, the plurality of batteries 4 can be moved along the overlapping direction of the plurality of batteries 4 along the support member 7 in association with temperature change, expansion, contraction, etc., or when the batteries 4 are assembled. . That is, the support member 7 is an example of a guide part. The support member 7 is insulative with respect to at least the battery 4. Specifically, for example, the support member 7 may be made of an insulating material (for example, a synthetic resin material), or an insulating coating layer is provided on the surface of the support member 7. Also good.

支持部材１０は、本実施形態では、一例として、天壁（第一の壁部）１０ａと、相互に対向した二つの側壁（第二の壁部、立壁）１０ｂと、を有している。支持部材１０は、Ｕ字状の断面を有した部分が複数の電池４の重なり方向に延びてＵ字状の溝を有した構成を備えている。天壁１０ａは、矩形状（例えば長方形状）の板状に形成されている。また、天壁１０ａは、ＸＺ平面に沿って延びている。側壁１０ｂは、矩形状（例えば長方形状）の板状に形成されている。また、側壁１０ｂは、天壁１０ａの短手方向（Ｚ方向）の端部に接続され、天壁１０ａと交叉する方向（本実施形態では一例として直交する方向、Ｙ方向、ＸＹ平面）に沿って延びている。図４に示されるように、天壁１０ａには、開口部１０ｃ（例えば貫通孔）が設けられている。開口部１０ｃには、電池４の端子４ｂが通されている。開口部１０ｃは、電池４の膨張や収縮等に伴って移動した場合にも、端子４ｂが通った状態が維持できるよう、端子４ｂの大きさよりも複数の電池４の重なり方向にやや拡がって（例えば長孔状に）設けられている。側壁１０ｂには、結合具としてのねじ１３が固定される固定部１０ｄ（例えば孔）が設けられている。側壁２ｂの開口部２ｇを通ったねじ１３が固定部１０ｄに固定され、これにより、ケース２と支持部材１０とが固定されている。天壁１０ａの面１０ｅには、電池４の端部４ａが当接されている。また、側壁１０ｂの内面１０ｆは、天壁１０ａに近付くにつれて側壁２ｂから離間する傾斜面である。よって、支持部材１０は、複数の電池４上に載せられる際に、内面１０ｆにガイドされ、所定の位置（図４に示される設置位置）により円滑に移動することができる。また、図２〜４を参照すれば明らかとなるように、本実施形態では、支持部材１０の天壁１０ａおよび二つの側壁１０ｂによって、複数の電池４の重なり方向（Ｘ方向）に沿って延びた溝が構成されている。よって、複数の電池４は、温度変化や膨張等に伴って、この支持部材１０に沿って複数の電池４の重なり方向に沿って移動することができる。また、支持部材１０は、組み付けられる際に、複数の電池４の重なり方向に沿って移動することができる。すなわち、支持部材１０は、ガイド部の一例である。また、支持部材１０は、電池４、端子４ｂ、およびバスバー１１に対して絶縁性を有する。支持部材１０は、具体的には、例えば、絶縁性を有した材料（例えば合成樹脂材料等）で構成することができる。 In the present embodiment, the support member 10 includes, for example, a top wall (first wall portion) 10a and two side walls (second wall portion, standing wall) 10b facing each other. The support member 10 has a configuration in which a portion having a U-shaped cross section extends in the overlapping direction of the plurality of batteries 4 and has a U-shaped groove. The top wall 10a is formed in a rectangular (for example, rectangular) plate shape. The top wall 10a extends along the XZ plane. The side wall 10b is formed in a rectangular (for example, rectangular) plate shape. Moreover, the side wall 10b is connected to the edge part of the transversal direction (Z direction) of the top wall 10a, and follows the direction (In this embodiment, an orthogonal direction, Y direction, XY plane as an example). It extends. As shown in FIG. 4, the top wall 10a is provided with an opening 10c (for example, a through hole). The terminal 4b of the battery 4 is passed through the opening 10c. The opening 10c is slightly expanded in the overlapping direction of the plurality of batteries 4 rather than the size of the terminals 4b so that the state where the terminals 4b pass can be maintained even when the opening 4c moves with expansion or contraction of the batteries 4 ( (For example, in the form of a long hole). The side wall 10b is provided with a fixing portion 10d (for example, a hole) to which a screw 13 as a coupler is fixed. The screw 13 that has passed through the opening 2g of the side wall 2b is fixed to the fixing portion 10d, whereby the case 2 and the support member 10 are fixed. The end 4a of the battery 4 is in contact with the surface 10e of the top wall 10a. Further, the inner surface 10f of the side wall 10b is an inclined surface that is separated from the side wall 2b as it approaches the top wall 10a. Therefore, when the support member 10 is placed on the plurality of batteries 4, the support member 10 is guided by the inner surface 10 f and can move smoothly at a predetermined position (installation position shown in FIG. 4). 2 to 4, in this embodiment, the top wall 10a and the two side walls 10b of the support member 10 extend along the overlapping direction (X direction) of the plurality of batteries 4 in the present embodiment. A groove is formed. Therefore, the plurality of batteries 4 can move along the overlapping direction of the plurality of batteries 4 along the support member 10 with a change in temperature, expansion, or the like. In addition, the support member 10 can move along the overlapping direction of the plurality of batteries 4 when assembled. That is, the support member 10 is an example of a guide part. Further, the support member 10 has an insulating property with respect to the battery 4, the terminal 4 b, and the bus bar 11. Specifically, the support member 10 can be made of, for example, an insulating material (for example, a synthetic resin material).

また、本実施形態では、複数の電池４の端子４ｂ同士が、バスバー（導体部、導電性部材）１１を介して接続されている。バスバー１１は、本実施形態では、一例として、支持部材１０の天壁１０ａに対して電池４の反対側に位置している。すなわち、バスバー１１は、天壁１０ａの開口部１０ｃを介して露出した端子４ｂに接続されている。また、本実施形態では、バスバー１１は、一例として、図２，３等に示されるように、二つの平坦部（接続部）１１ａと、これら二つの平坦部１１ａ間に位置した屈曲部１１ｂと、を有している。そして、平坦部１１ａと端子４ｂとが、溶接等によって接続（電気的に接続）される。バスバー１１は、屈曲部１１ｂがカバー３側に向けて凸となる姿勢で位置される。このような構成によれば、例えば、電池４の膨張や収縮等に伴って、二つの平坦部１１ａ間の距離が変化した場合にあっても、バスバー１１は屈曲部１１ｂを起点として比較的容易に屈曲しやすい。よって、平坦部１１ａと端子４ｂとの接続部分に過大な応力が生じるのを抑制しやすい。なお、バスバー１１と端子４ｂとの接続作業は、支持部材１０とケース２とが固定され、カバー３がケース２に固定される前の段階で、比較的容易に実行されうる。 In the present embodiment, the terminals 4 b of the plurality of batteries 4 are connected to each other via a bus bar (conductor portion, conductive member) 11. In this embodiment, the bus bar 11 is located on the opposite side of the battery 4 with respect to the top wall 10a of the support member 10 as an example. That is, the bus bar 11 is connected to the exposed terminal 4b through the opening 10c of the top wall 10a. In the present embodiment, as an example, the bus bar 11 includes two flat portions (connection portions) 11a and a bent portion 11b positioned between the two flat portions 11a, as shown in FIGS. ,have. The flat portion 11a and the terminal 4b are connected (electrically connected) by welding or the like. The bus bar 11 is positioned in such a posture that the bent portion 11b is convex toward the cover 3 side. According to such a configuration, for example, even when the distance between the two flat portions 11a changes as the battery 4 expands or contracts, the bus bar 11 is relatively easy to start from the bent portion 11b. Easy to bend. Therefore, it is easy to suppress the occurrence of excessive stress at the connection portion between the flat portion 11a and the terminal 4b. The connection work between the bus bar 11 and the terminal 4b can be performed relatively easily at a stage before the support member 10 and the case 2 are fixed and the cover 3 is fixed to the case 2.

次に、図５〜９を参照して、組電池１の組立手順の一例が説明される。まず、図５に示されるように、ケース２の収容部２ｄに、開口部２ｅから支持部材７が挿入され、その後、エンドプレート６および押部材５Ｂ（図５には示されず）が挿入される。本実施形態では、エンドプレート６，９や、複数の電池４、押部材５Ａ，５Ｂは、支持部材７上に入れられる。 Next, an example of an assembly procedure of the assembled battery 1 will be described with reference to FIGS. First, as shown in FIG. 5, the support member 7 is inserted into the housing portion 2d of the case 2 from the opening 2e, and then the end plate 6 and the pressing member 5B (not shown in FIG. 5) are inserted. . In the present embodiment, the end plates 6 and 9, the plurality of batteries 4, and the pressing members 5 A and 5 B are placed on the support member 7.

次に、図６に示されるように、ケース２の収容部２ｄには、電池４および介在部材８が収容され、図７に示されるように、押部材５Ａが収容される。そして、図８に示されるように、ケース２の収容部２ｄには、もう一つのエンドプレート９が挿入される。このとき、エンドプレート９は、収容部２ｄの複数の電池４の重なり方向の長さや、収容部２ｄに収容された部品（エンドプレート６、電池４、介在部材８）の重なった長さ、収容部２ｄに部品を収容した残りの空間の長さ等によって、適宜な厚さを有したものを選定することができる。図９に示されるように、ケース２の収容部２ｄに収容された部品上に支持部材１０が載せられ、ねじ１３（図２等参照）によって支持部材１０とケース２とが固定される。その後、カバー３（図２等参照）とケース２とが固定される。 Next, as illustrated in FIG. 6, the battery 4 and the interposition member 8 are accommodated in the accommodating portion 2 d of the case 2, and the pressing member 5 A is accommodated as illustrated in FIG. 7. As shown in FIG. 8, another end plate 9 is inserted into the housing portion 2 d of the case 2. At this time, the end plate 9 has a length in the overlapping direction of the plurality of batteries 4 in the accommodating portion 2d, a length in which the components (the end plate 6, the battery 4, and the interposition member 8) accommodated in the accommodating portion 2d overlap each other. An appropriate thickness can be selected according to the length of the remaining space in which the parts are accommodated in the portion 2d. As shown in FIG. 9, the support member 10 is placed on a component housed in the housing portion 2 d of the case 2, and the support member 10 and the case 2 are fixed by screws 13 (see FIG. 2 and the like). Thereafter, the cover 3 (see FIG. 2 and the like) and the case 2 are fixed.

以上の本実施形態では、組電池１は、ケース２内に収容されそれぞれ端子４ｂを有し当該端子４ｂが同じ側の端部４ａに位置された状態で重ねられた複数の電池４と、収容部２ｄ内で複数の電池４の重なり方向の一方側に位置され当該重なり方向の他方側に向けて複数の電池４を弾性的に押す押部材５Ａと、を備えた。すなわち、本実施形態では、複数の電池４がケース２の収容部２ｄ内に収容される。よって、本実施形態によれば、一例としては、電池４の膨張等で組電池１の外形寸法が変化するため取り扱いが面倒になるなどの問題が生じるのを、抑制することができる。また、本実施形態によれば、接着剤等を使用せずに済む分、一例としては、製造の手間を減らすことができたり、製造コストをより低減することができたりする。また、本実施形態では、ケース２内で、電池４の膨張または収縮が、少なくとも押部材５Ａの弾性変形範囲内で許容される。よって、本実施形態によれば、一例としては、電池４の膨張または収縮等が生じたとしても、複数の電池４を、押部材５Ａの弾性力によって、よりしっかりと保持することが可能となる。すなわち、本実施形態によれば、一例としては、電池４のがたつきや振動等を抑制しやすくなる。 In the above embodiment, the assembled battery 1 is housed in the case 2 and has the terminals 4b, and the batteries 4 are stacked in a state where the terminals 4b are positioned on the end 4a on the same side. A pressing member 5A that is positioned on one side in the overlapping direction of the plurality of batteries 4 in the portion 2d and elastically pushes the plurality of batteries 4 toward the other side in the overlapping direction. That is, in the present embodiment, the plurality of batteries 4 are accommodated in the accommodating portion 2 d of the case 2. Therefore, according to the present embodiment, as an example, it is possible to suppress the occurrence of problems such as troublesome handling because the external dimensions of the assembled battery 1 change due to expansion of the battery 4 or the like. Further, according to the present embodiment, as an example, it is possible to reduce the labor of manufacturing and to further reduce the manufacturing cost as much as it is not necessary to use an adhesive or the like. Further, in the present embodiment, the expansion or contraction of the battery 4 is allowed in the case 2 at least within the elastic deformation range of the pressing member 5A. Therefore, according to the present embodiment, as an example, even if the battery 4 expands or contracts, the plurality of batteries 4 can be more securely held by the elastic force of the pressing member 5A. . That is, according to the present embodiment, as an example, it becomes easy to suppress rattling or vibration of the battery 4.

また、本実施形態では、押部材５Ａは、弾性的に電池４を押す力を生じさせる複数の押圧部５ｂを有した。よって、本実施形態によれば、一例としては、押圧部が一つだけである場合に比べて、押圧部５ｂをより小さく構成しやすくなり、一例としては、押部材５Ａひいては組電池１をより小型に構成しやすくなる。 In the present embodiment, the pressing member 5 A has a plurality of pressing portions 5 b that elastically generate a force for pressing the battery 4. Therefore, according to the present embodiment, as an example, it becomes easier to configure the pressing portion 5b smaller than when only one pressing portion is provided. As an example, the pressing member 5A and the assembled battery 1 are more It becomes easy to make small.

また、本実施形態では、組電池１は、ケース２の収容部２ｄ内で、複数の電池４の重なり方向と交叉する方向（本実施形態では、一例として、Ｙ方向）の一方側に位置され、当該交叉する方向の他方側に向けて複数の電池４を弾性的に押す第二の押部材５Ｂを備えた。よって、本実施形態によれば、複数の電池４を重なり方向と交叉する方向の他方側に位置された部品の一例である支持部材１０に押し付けることができる。よって、本実施形態によれば、一例としては、複数の電池４が重なり方向と交叉する方向にずれるのを抑制しやすくなる。 Further, in the present embodiment, the assembled battery 1 is positioned in one side of a direction intersecting with the overlapping direction of the plurality of batteries 4 (in the present embodiment, the Y direction as an example) in the housing portion 2d of the case 2. The second pressing member 5B that elastically presses the plurality of batteries 4 toward the other side in the crossing direction is provided. Therefore, according to the present embodiment, the plurality of batteries 4 can be pressed against the support member 10 which is an example of a component located on the other side in the direction crossing the overlapping direction. Therefore, according to the present embodiment, as an example, it is easy to prevent the plurality of batteries 4 from shifting in the direction crossing the overlapping direction.

また、本実施形態では、組電池１は、収容部２ｄ内で電池４を重なり方向にガイドするガイド部の一例である支持部材７，１０を備えた。よって、本実施形態によれば、一例としては、電池４がその膨張や収縮等に伴って収容部２ｄ内で重なり方向に沿って移動するような場合等に、電池４が収容部２ｄ内でより円滑に移動しやすくなる。また、本実施形態では、支持部材７，１０は、傾斜面としての内面７ｄ，１０ｆを有している。よって、本実施形態によれば、一例としては、電池４がずれるのを抑制しやすくなる。また、本実施形態によれば、一例としては、電池４が収容部２ｄ内に挿入される際に、より円滑に移動しやすい。 In the present embodiment, the assembled battery 1 includes support members 7 and 10 that are examples of guide portions that guide the battery 4 in the overlapping direction in the housing portion 2d. Therefore, according to the present embodiment, as an example, when the battery 4 moves along the overlapping direction in the housing portion 2d as the battery 4 expands or contracts, the battery 4 moves in the housing portion 2d. It becomes easier to move more smoothly. In the present embodiment, the support members 7 and 10 have inner surfaces 7d and 10f as inclined surfaces. Therefore, according to the present embodiment, as an example, it is easy to suppress the battery 4 from shifting. In addition, according to the present embodiment, as an example, when the battery 4 is inserted into the housing portion 2d, it is easier to move more smoothly.

また、本実施形態では、組電池１は、相互に隣接する電池４の間に介在した介在部材８を備えた。よって、本実施形態によれば、一例としては、複数の電池４間で絶縁を確保しやすくなる。また、本実施形態では、介在部材８は、電池４の縁部４ｄに対応して設けられた。よって、本実施形態によれば、一例としては、電池４の縁部（介在部材８が当接する部分）４ｄより内側での膨張を許容しやすくなる。さらに、本実施形態では、介在部材８は、電池４の角部４ｃに対応した第一部分の一例である角部８ｂと、電池４の二つの角部４ｃ間の縁部４ｄに沿って位置され角部８ｂより薄い第二部分の一例である辺部８ａと、を有した。よって、本実施形態によれば、一例としては、辺部８ａに対応した部分で隙間ｇを設けることができ、当該隙間ｇを流れる空気によって電池４の温度上昇を抑制しやすい。 In the present embodiment, the assembled battery 1 includes the interposition member 8 interposed between the batteries 4 adjacent to each other. Therefore, according to this embodiment, as an example, it becomes easy to ensure insulation between the plurality of batteries 4. In the present embodiment, the interposition member 8 is provided corresponding to the edge 4 d of the battery 4. Therefore, according to the present embodiment, as an example, it becomes easy to allow expansion inside the edge portion (portion where the interposition member 8 abuts) 4d of the battery 4. Furthermore, in the present embodiment, the interposition member 8 is positioned along a corner portion 8b which is an example of a first portion corresponding to the corner portion 4c of the battery 4 and an edge portion 4d between the two corner portions 4c of the battery 4. And a side portion 8a which is an example of a second portion thinner than the corner portion 8b. Therefore, according to the present embodiment, as an example, the gap g can be provided at a portion corresponding to the side portion 8a, and the temperature rise of the battery 4 can be easily suppressed by the air flowing through the gap g.

また、本実施形態では、押部材５Ａが、電池４の縁部４ｄに対応して設けられ弾性的に電池４を押す力を生じさせる複数の押圧部５ｂを有した。よって、本実施形態によれば、一例としては、電池４の縁部４ｄに対応した介在部材８が設けられた場合に、より効率良く押圧部５ｂを設けることができる。 In the present embodiment, the pressing member 5 A has a plurality of pressing portions 5 b that are provided corresponding to the edge 4 d of the battery 4 and elastically generate a force for pressing the battery 4. Therefore, according to this embodiment, as an example, when the interposition member 8 corresponding to the edge 4d of the battery 4 is provided, the pressing portion 5b can be provided more efficiently.

また、本実施形態では、ケース２に、第二部分の一例である辺部８ａの少なくとも一部を露出させる第二の開口部の一例である開口部２ｆが設けられた。よって、本実施形態によれば、一例としては、ケース２をより軽く構成することができる。また、本実施形態によれば、一例としては、収容部２ｄ内で空気が流れやすくなり、電池４の温度上昇を抑制しやすい。 In the present embodiment, the case 2 is provided with the opening 2f that is an example of the second opening that exposes at least a part of the side 8a that is an example of the second part. Therefore, according to the present embodiment, as an example, the case 2 can be configured to be lighter. Further, according to the present embodiment, as an example, air easily flows in the housing portion 2d, and the temperature rise of the battery 4 is easily suppressed.

以上、本発明の実施形態について説明したが、上記実施形態は一例に過ぎない。本発明は上記実施形態には限定されず、種々の変形が可能である。例えば、上記実施形態の押部材５Ａに替えて、図１０〜１２に示される各変形例にかかる押部材５Ａ１〜５Ａ３を用いることができる。図１０の押部材５Ａ１では、押圧部５ｂが、弾性部材としてのベース部５ａが例えばＬ字状に切り起こされた片部（突出片、突起、弾性部材）として設けられている。押部材５Ａ１は、一例としては、金属材料によって構成することができる。図１１の押部材５Ａ２では、押圧部５ｂが電池４の縁部４ｄ（図４参照）のみならず縁部４ｄの内側を含む側面のほぼ全域に対応して設けられている。また、複数の電池４を２並列１２直列など並列に並べた場合には、重なり方向が二方向であってもよい。また、図１２の押部材５Ａ３では、図１０と同様の構成の押圧部５ｂが電池４の角部４ｃ（図４参照）のみに対応して設けられている。図１０〜１２に示される押部材５Ａ１〜５Ａ３を備えた組電池１にあっても、押部材５Ａを備えた場合と同様の効果を得ることができる。また、例えば、電池４の縁部４ｄに対応する押圧部５ｂの弾性反発力を大きくし、縁部４ｄより内側に対応する押圧部５ｂの弾性反発力を小さくするなど、複数の押圧部５ｂのスペック（大きさ、高さ等）を場所によって変化させることができる。また、各構成要素のスペック（構造や、種類、方向、形状、大きさ、長さ、幅、厚さ、高さ、数、配置、位置、材質等）は、適宜に変更して実施することができる。 As mentioned above, although embodiment of this invention was described, the said embodiment is only an example. The present invention is not limited to the above embodiment, and various modifications are possible. For example, the pressing members 5A1 to 5A3 according to the modifications shown in FIGS. 10 to 12 can be used instead of the pressing member 5A of the above embodiment. In the pressing member 5A1 of FIG. 10, the pressing portion 5b is provided as a piece (projection piece, protrusion, elastic member) in which a base portion 5a as an elastic member is cut and raised, for example, in an L shape. For example, the pressing member 5A1 can be made of a metal material. In the pressing member 5A2 of FIG. 11, the pressing portion 5b is provided corresponding to not only the edge portion 4d (see FIG. 4) of the battery 4 but also almost the entire side surface including the inside of the edge portion 4d. In addition, when a plurality of batteries 4 are arranged in parallel, such as two parallel 12 series, the overlapping direction may be two directions. Further, in the pressing member 5A3 in FIG. 12, the pressing portion 5b having the same configuration as that in FIG. 10 is provided corresponding to only the corner portion 4c of the battery 4 (see FIG. 4). Even in the battery pack 1 provided with the pressing members 5A1 to 5A3 shown in FIGS. 10 to 12, the same effects as those obtained when the pressing member 5A is provided can be obtained. Further, for example, the elastic repulsive force of the pressing portion 5b corresponding to the edge 4d of the battery 4 is increased, and the elastic repulsive force of the pressing portion 5b corresponding to the inner side of the edge 4d is decreased. Specs (size, height, etc.) can be changed depending on the location. In addition, the specifications of each component (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) should be changed as appropriate. Can do.

１…組電池、２…ケース、２ｅ…開口部、２ｆ…開口部（第二の開口部）、３…カバー、４…電池、４ａ…端部、４ｂ…端子、４ｃ…角部、４ｄ…縁部、５Ａ，５Ａ１，５Ａ２，５Ａ３…押部材、５Ｂ…押部材（第二の押部材）、５ｂ…押圧部、７…支持部材（ガイド部）、８…介在部材、８ａ…辺部（第二部分）、８ｂ…角部（第一部分）、１０…支持部材（ガイド部）、１１…バスバー。 DESCRIPTION OF SYMBOLS 1 ... Assembly battery, 2 ... Case, 2e ... Opening part, 2f ... Opening part (2nd opening part), 3 ... Cover, 4 ... Battery, 4a ... End part, 4b ... Terminal, 4c ... Corner | angular part, 4d ... Edges, 5A, 5A1, 5A2, 5A3 ... Pushing member, 5B ... Pushing member (second pushing member), 5b ... Pushing part, 7 ... Support member (guide part), 8 ... Intermediate member, 8a ... Side part ( Second part), 8b ... Corner (first part), 10 ... Support member (guide part), 11 ... Busbar.

Claims

A case having an opening and a receiving portion;
A plurality of batteries housed in the housing part, each having a terminal, and the terminals stacked in a state where the terminal is located at the end of the same side;
A pressing member that is positioned on one side in the overlapping direction of the plurality of batteries within the housing portion and elastically pushes the plurality of batteries toward the other side in the overlapping direction;
A bus bar electrically connecting the terminals;
A cover fixed to the case and covering the opening;
An assembled battery.

The assembled battery according to claim 1, wherein the pressing member has a plurality of pressing portions that elastically generate a force for pressing the battery.

2. A second pressing member that is positioned on one side in a direction intersecting with the overlapping direction in the accommodating portion and elastically pushes the plurality of batteries toward the other side in the intersecting direction. Or the assembled battery of 2.

The assembled battery according to claim 3, wherein the second pressing member has a plurality of second pressing portions that elastically generate a force for pressing the battery.

The assembled battery as described in any one of Claims 1-4 provided with the guide part which guides the said battery in the said overlapping direction in the said accommodating part.

The assembled battery as described in any one of Claims 1-5 provided with the interposition member interposed between the said adjacent batteries.

The assembled battery according to claim 6, wherein the interposition member is provided corresponding to an edge of the battery.

The assembled battery according to claim 7, wherein the interposition member includes a first portion corresponding to a corner portion of the battery and a second portion provided corresponding to an edge portion of the battery and thinner than the first portion. .

The assembled battery according to claim 7 or 8, wherein the pressing member includes a plurality of the pressing portions that are provided corresponding to the edge portions of the battery and elastically generate a force to press the battery.

The assembled battery according to claim 9, wherein the case is provided with a second opening that exposes at least a part of the second portion.

In the housing part of the case having an opening and a housing part, a step of housing a plurality of batteries in a state where the terminals of the batteries are positioned at the end on the same side;
A step of accommodating a pressing member that elastically pushes the plurality of batteries toward the other side of the overlapping direction on one side of the plurality of batteries in the overlapping direction with respect to the plurality of batteries in the storage unit;
Electrically connecting the terminal to a bus bar;
Fixing a cover covering the opening to the case;
A method for producing an assembled battery, comprising: