JP2019204658A - Battery module - Google Patents
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- JP2019204658A JP2019204658A JP2018098711A JP2018098711A JP2019204658A JP 2019204658 A JP2019204658 A JP 2019204658A JP 2018098711 A JP2018098711 A JP 2018098711A JP 2018098711 A JP2018098711 A JP 2018098711A JP 2019204658 A JP2019204658 A JP 2019204658A
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- 230000004308 accommodation Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 abstract description 106
- 210000005056 cell body Anatomy 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 239000011888 foil Substances 0.000 description 7
- 238000005304 joining Methods 0.000 description 7
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
Description
この発明は、積層状に配置された複数の電池セルからなる電池モジュールに関する。 The present invention relates to a battery module including a plurality of battery cells arranged in a stacked form.
たとえばハイブリッド自動車、電気自動車等の電動機駆動用バッテリー装置として、たとえばリチウムイオン二次電池などの各種の二次電池からなる複数個の電池セルを直列に接続して電池モジュールの形態としたものが用いられている。特に、電気自動車においては航続距離の延長のニーズから電池モジュールの大容量化や搭載数の増加が求められるので、複数の電池モジュールが組み合わされて用いられている。 For example, as a battery device for driving an electric motor of a hybrid vehicle, an electric vehicle, or the like, a battery module in which a plurality of battery cells made of various secondary batteries such as lithium ion secondary batteries are connected in series is used. It has been. In particular, in an electric vehicle, a battery module needs to be increased in capacity and increased in number because of the need for extending the cruising distance. Therefore, a plurality of battery modules are used in combination.
上述した電池モジュールとして、電池セル本体部、導電体箔からなる正極端子および導電体箔からなる負極端子を有する複数の電池セルが積層状に配置されて電池セル積層体が構成され、隣り合う２つの電池セルにおいて、一方の電池セルの正極端子と、他方の電池セルにおける当該正極端子に接続される負極端子とにより１つの端子対が構成されており、前記端子対の両端子が電池セル本体部から同方向に真っ直ぐに突出し、前記端子対の両端子間の全体に、電池セルの積層方向に一定の幅を有する間隙が形成されており、前記端子対の両端子間に導電体製接続部材が配置されるとともに、接続部材を介して当該両端子が電気的に接続されている電池モジュールが知られている（特許文献１参照）。特許文献１には明記されていないが、端子と接続部材とはレーザー溶接法や超音波接合法により金属的に接合されている。
As the battery module described above, a plurality of battery cells having a battery cell main body, a positive electrode terminal made of a conductive foil, and a negative electrode terminal made of a conductive foil are arranged in a laminated form to form a battery cell laminated body, and adjacent two In one battery cell, one terminal pair is constituted by a positive terminal of one battery cell and a negative terminal connected to the positive terminal of the other battery cell, and both terminals of the terminal pair are battery cell main bodies. A gap having a certain width in the stacking direction of the battery cells is formed between the two terminals of the terminal pair, and the conductor connection is made between the two terminals of the terminal pair. There is known a battery module in which members are arranged and both terminals are electrically connected via a connecting member (see Patent Document 1). Although not specified in
また、上述した電池モジュールとして、電池セル本体部、導電体箔からなる正極端子および導電体箔からなる負極端子を有する複数の電池セルが積層状に配置されて電池セル積層体が構成され、隣り合う２つの電池セルにおいて、一方の電池セルの正極端子と、他方の電池セルにおける当該正極端子に接続される負極端子とにより１つの端子対が構成されており、前記端子対の両端子が電池セル本体部から同方向に突出するとともに両端子が接触するように折り曲げられている電池モジュールが知られている（特許文献２参照）。特許文献２には明記されていないが、端子と接続部材とはレーザー溶接法や超音波接合法により金属的に接合されている。
Further, as the above-described battery module, a plurality of battery cells having a battery cell main body, a positive electrode terminal made of a conductive foil, and a negative electrode terminal made of a conductive foil are arranged in a stacked form to form a battery cell stacked body, In two matching battery cells, one terminal pair is constituted by a positive terminal of one battery cell and a negative terminal connected to the positive terminal of the other battery cell, and both terminals of the terminal pair are batteries. A battery module that protrudes in the same direction from the cell body and is bent so that both terminals are in contact with each other is known (see Patent Document 2). Although not specified in
しかしながら、特許文献１記載の電池モジュールの場合、前記端子対の正極端子と負極端子とが別部品の接続部材を介して電気的に接続されているので、正極端子と負極端子とが直接電気的に接続されている場合に比べて電気抵抗が増大し、電池モジュールとしての性能が低下する。
However, in the case of the battery module described in
また、特許文献２記載の電池モジュールの場合、正極端子および負極端子に曲げ加工を施す必要があり、製造工程が増加する。
In addition, in the case of the battery module described in
この発明の目的は、上記問題を解消し、性能が向上するとともに製造工程の増加を防止しうる電池モジュールを提供することにある。 An object of the present invention is to provide a battery module that can solve the above problems, improve performance, and prevent an increase in manufacturing steps.
本発明は、上記目的を達成するために以下の態様からなる。 In order to achieve the above object, the present invention comprises the following aspects.
1)電池セル本体部から正極端子および負極端子が突出する電池セルの複数個が積層状に配置されて電池セル積層体が構成され、前記電池セル積層体の全電池セルが正極端子および負極端子を用いて直列に接続された電池モジュールであって、
隣り合う２つの電池セルにおいて、一方の電池セルの正極端子と他方の電池セルの負極端子が同方向に突出して端子対が形成され、前記端子対の正極端子と負極端子とが電気絶縁性を有するガイド部材によって接触または近接させられた状態で直接接合されている電池モジュール。
1) A plurality of battery cells in which a positive electrode terminal and a negative electrode terminal protrude from the battery cell main body are arranged in a stacked manner to form a battery cell laminate, and all the battery cells of the battery cell laminate are configured as a positive electrode terminal and a negative electrode terminal. Battery modules connected in series using
In two adjacent battery cells, a positive electrode terminal of one battery cell and a negative electrode terminal of the other battery cell protrude in the same direction to form a terminal pair, and the positive electrode terminal and the negative electrode terminal of the terminal pair are electrically insulating. A battery module that is directly joined in a state of being brought into contact with or in close proximity by a guide member having the same.
2)前記ガイド部材が、端子対の両端子を接触または近接させるガイド部を有し、前記ガイド部に端子対の一部を外部に露出させる窓部が設けられ、前記窓部内で両端子が接合されている上記1)記載の電池モジュール。 2) The guide member has a guide portion that contacts or approaches both terminals of the terminal pair, and the guide portion is provided with a window portion that exposes a part of the terminal pair to the outside. The battery module according to 1), which is bonded.
3)前記ガイド部が、前記電池セル側に開口し、電池セルの積層方向の開口幅が電池セル側の端部において端子対の両端子間の間隙よりも大きく底部に向かって小さくなる溝部と、この溝部の底部に連通するスリット状の収容部とを有し、
前記ガイド部の溝部から挿入された端子対の両端子が収容部において接触または近接し、前記収容部に設けられた窓部内において接合されている上記2)記載の電池モジュール。
3) The guide portion is open to the battery cell side, and the groove width of the battery cell in the stacking direction is larger than the gap between the two terminals of the terminal pair at the end portion on the battery cell side and decreases toward the bottom. And a slit-shaped accommodating portion communicating with the bottom of the groove,
The battery module according to 2), wherein both terminals of the terminal pair inserted from the groove portion of the guide portion are in contact with or close to each other in the housing portion, and are joined in a window portion provided in the housing portion.
4)前記ガイド部が間隔をおいて配置された１対のガイド部形成部材によって形成され、各ガイド部形成部材が、ガイド部の溝部を形成する第１壁部と収容部を形成する第２壁部とを備えている上記3)記載の電池モジュール。 4) The guide portions are formed by a pair of guide portion forming members arranged at intervals, and each guide portion forming member forms a first wall portion that forms a groove portion of the guide portion and a second portion that forms a receiving portion. The battery module according to 3) above, comprising a wall portion.
5)前記電池セルが方形の電池セル本体部の対向する２つの辺部の一方の辺部に正極端子が設けられるとともに他方の辺部に負極端子が設けられてなり、複数の前記電池セルが正極端子と負極端子とが交互に並ぶように配置されることによって電池セル積層体の両側にそれぞれ複数の端子対が形成され、
前記電池セル積層体の一方の辺部の全端子対が端子対の数のガイド部を有する一つのガイド部材によって接触または近接させられ、他方の辺部の全端子対が端子対の数のガイド部を有する一つのガイド部材によって接触または近接させられている上記1)〜4)のうちのいずれかに記載の電池モジュール。
6)前記電池セルが方形の電池セル本体部の１つの辺部に正極端子および負極端子が当該辺部の長手方向に間隔をおいて設けられてなり、複数の前記電池セルが隣り合う電池セルの正極端子と負極端子が交互に並ぶように配置されることによって、電池セル積層体の一方の側に複数の端子対が２列で形成され、
全端子対が端子対の数のガイド部を有する一つのガイド部材によって接触または近接させられている上記1)〜4)のうちのいずれかに記載の電池モジュール。
5) The battery cell is formed by providing a positive electrode terminal on one side of two opposite sides of the rectangular battery cell main body and a negative electrode terminal on the other side, and a plurality of the battery cells A plurality of terminal pairs are formed on both sides of the battery cell stack by being arranged so that the positive electrode terminals and the negative electrode terminals are alternately arranged,
All the terminal pairs on one side of the battery cell stack are brought into contact with or brought close to each other by one guide member having the number of terminal pairs, and the number of terminal pairs on the other side is the guide of the number of terminal pairs. The battery module according to any one of 1) to 4), wherein the battery module is in contact with or in proximity to a single guide member having a portion.
6) A battery cell in which a plurality of battery cells are adjacent to each other, with a positive electrode terminal and a negative electrode terminal provided at intervals in the longitudinal direction of the side portion of one side of the battery cell main body having a square shape. The positive electrode terminals and the negative electrode terminals are alternately arranged so that a plurality of terminal pairs are formed in two rows on one side of the battery cell stack,
5. The battery module according to any one of 1) to 4), wherein all the terminal pairs are brought into contact with or in proximity to each other by a single guide member having the number of guide portions equal to the number of terminal pairs.
上記1)〜6)の電池モジュールによれば、電池セル積層体の隣り合う２つの電池セルにおいて、一方の電池セルの正極端子と、他方の電池セルにおける当該正極端子に接続される負極端子とにより１つの端子対が構成されており、前記端子対の両端子が電池セル本体部から同方向に突出しており、前記端子対の正極端子と負極端子とが電気絶縁性を有するガイド部材によって接触または近接させられた状態で直接接合されているので、前記端子対の正極端子と負極端子とが直接電気的に接続されることになる。したがって、特許文献１記載の電池モジュールに比べて抵抗の増大が抑制され、電池モジュールの性能が向上する。
According to the battery modules of 1) to 6) above, in two adjacent battery cells of the battery cell stack, a positive terminal of one battery cell, and a negative terminal connected to the positive terminal of the other battery cell, One terminal pair is configured, both terminals of the terminal pair protrude in the same direction from the battery cell body, and the positive terminal and the negative terminal of the terminal pair are in contact with each other by a guide member having electrical insulation. Alternatively, since they are directly joined in a state of being close to each other, the positive terminal and the negative terminal of the terminal pair are directly electrically connected. Therefore, an increase in resistance is suppressed as compared with the battery module described in
また、端子対の正極端子と負極端子はガイド部材によって接触または近接させられた状態で接合されているので、特許文献２記載の電池モジュールのように、正極端子および負極端子に曲げ加工を施す必要がなく、製造工程の増加を防止することができる。
Further, since the positive electrode terminal and the negative electrode terminal of the terminal pair are joined in a state of being brought into contact with or close to each other by the guide member, it is necessary to bend the positive electrode terminal and the negative electrode terminal as in the battery module described in
上記2)の電池モジュールによれば、ガイド部材のガイド部によって接触または近接させた正極端子と負極端子が窓部において露出しているので、正極端子と負極端子との電気的接続を比較的簡単に行うことができる。 According to the battery module of 2), since the positive electrode terminal and the negative electrode terminal that are brought into contact with or close to each other by the guide portion of the guide member are exposed in the window portion, electrical connection between the positive electrode terminal and the negative electrode terminal is relatively easy. Can be done.
上記3)の電池モジュールによれば、ガイド部の溝部によって正極端子と負極端子が互いに近づくように曲げられ、収容部において両端子が接触または近接した状態で保持される。従って、端子対の正極端子と負極端子とを簡単かつ確実に接触または近接させることができる。また、前記収容部に窓部が設けられているので、この窓部において接触または近接させた正極端子と負極端子が接合される。 According to the battery module of 3) above, the positive electrode terminal and the negative electrode terminal are bent so as to approach each other by the groove portion of the guide portion, and the both terminals are held in contact with or close to each other in the accommodating portion. Therefore, the positive electrode terminal and the negative electrode terminal of the terminal pair can be contacted or brought close to each other easily and reliably. Further, since the housing portion is provided with a window portion, the positive electrode terminal and the negative electrode terminal brought into contact with or close to each other in the window portion are joined.
上記4）の電池モジュールによれば、傾斜壁と垂直壁を有するガイド部形成部材によって溝部および収容部を有するガイド部材を形成できる。 According to the battery module of 4), the guide member having the groove portion and the accommodating portion can be formed by the guide portion forming member having the inclined wall and the vertical wall.
上記5)および6)の電池モジュールによれば、ガイド部材の使用数を、特許文献１記載の接続部材の数に比べて大幅に低減することができ、部品点数の削減が可能になる。
According to the battery modules 5) and 6) described above, the number of guide members used can be significantly reduced compared to the number of connecting members described in
以下に、この発明の実施形態を図面を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
以下の説明において、図３の上下、左右を上下、左右といい、図３の紙面表側を前、これと反対側を後というものとする。また、全図面を通じて同一物および同一部分には同一符号を付す。 In the following description, the top and bottom, left and right in FIG. 3 are referred to as top and bottom, and left and right, and the front side of FIG. 3 is the front and the opposite side is the back. Moreover, the same code | symbol is attached | subjected to the same thing and the same part through all drawings.
図１および図２はこの発明による電池モジュールの全体構成を示し、図３〜図７は要部の構成を示している。 1 and 2 show the overall configuration of the battery module according to the present invention, and FIGS. 3 to 7 show the configuration of the main part.
図１〜図５に示すように、電池モジュール(1)は、複数の扁平状角形電池セル(2)、たとえば複数の扁平状角形リチウムイオン二次電池セルが積層状に配置されて電池セル積層体(6)が構成され、電池セル積層体(6)の全電池セル(2)が直列に接続されたものである。図示例の電池積層体(6)は１２個の電池セル(2)が積層されている。
（電池セル積層体）
前記電池セル(2)はラミネート型電池セルであって、図示は省略したが、電池セル本体部(3)内にシート状正極、シート状負極、および正極と負極を仕切るシート状セパレータが交互に積層された電極群を有し、当該電極群が、周縁部が溶着された２枚のラミネートフィルム間に密封されたものである。前記正極端子(4)は電極群の全正極に電気的に接続され、電池セル本体部(3)の一つの辺部から引き出されて電池セル本体部(3)から突出している。前記負極端子(5)は電極群の全負極に電気的に接続され、電池セル本体部(3)の正極端子(4)が引き出された辺部に対向する辺部から引き出されて電池セル本体部(3)から突出している。即ち、前記正極端子(4)と負極端子(5)は電池セル本体部(3)の対向辺部から突出している。前記正極端子(4)にはたとえばアルミニウム箔（アルミニウム合金箔を含む）が用いられ、前記負極端子(5)にはたとえば銅箔（銅合金箔を含む）が用いられる。各電池セル(2)は、図５に示すように、保持フレーム(8)に保持されている。
As shown in FIGS. 1 to 5, the battery module (1) includes a plurality of flat rectangular battery cells (2), for example, a plurality of flat rectangular lithium ion secondary battery cells arranged in a stacked manner. The body (6) is configured, and all the battery cells (2) of the battery cell stack (6) are connected in series. In the illustrated battery stack (6), twelve battery cells (2) are stacked.
(Battery cell stack)
The battery cell (2) is a laminate type battery cell, and although not shown, sheet-like positive electrodes, sheet-like negative electrodes, and sheet-like separators separating the positive and negative electrodes are alternately placed in the battery cell main body (3). It has a laminated electrode group, and the electrode group is sealed between two laminated films having a peripheral edge welded. The positive terminal (4) is electrically connected to all the positive electrodes of the electrode group, is drawn from one side of the battery cell body (3), and protrudes from the battery cell body (3). The negative electrode terminal (5) is electrically connected to all the negative electrodes of the electrode group, and is drawn out from the side opposite to the side from which the positive electrode terminal (4) of the battery cell main body (3) is drawn out. Projects from the part (3). That is, the positive electrode terminal (4) and the negative electrode terminal (5) protrude from opposite sides of the battery cell main body (3). For example, an aluminum foil (including an aluminum alloy foil) is used for the positive electrode terminal (4), and a copper foil (including a copper alloy foil) is used for the negative electrode terminal (5), for example. Each battery cell (2) is held by a holding frame (8) as shown in FIG.
前記電池セル積層体(6)は、図１、２に示すように、保持フレーム(8)に保持された電池セル(2)によって構成されている。なお、図３，４、７は保持フレーム(8)の図示を省略し、電池セル(2)のみを図示している。 As shown in FIGS. 1 and 2, the battery cell stack (6) is constituted by battery cells (2) held by a holding frame (8). In FIGS. 3, 4, and 7, the holding frame (8) is not shown, and only the battery cell (2) is shown.
前記電池セル積層体(6)は、電池セル(2)の正極端子(4)と負極端子(5)が上下方向に突出しかつ上下が交互に逆になるように左右方向に並べられて積層され、さらに積層方向の両側から挟着フレーム(9)で挟み付けられ、両挟着フレーム(9)および全保持フレーム(8)を貫通するボルト、ナットなどの締結具(11)によって固定されている。かかる配置により、電池セル積層体(6)の上面において、左から右へ正極端子(4)、負極端子(5)、正極端子(4)…の順で交互に並び、下面において、左から右へ負極端子(5)、正極端子(4)、負極端子(5)…の順で交互に並んでいる。そして、上面においては、左端の電池セル(2)の正極端子(4)と左から２番目の電池セル(2)（以下「電池セル(2)」を省略する）の負極端子(5)が端子対(7)を形成し、以下順次右端の負極端子(5)まで６対の端子対(7)が形成されている。一方、下面においては、左から２番目の正極端子(4)と左から３番目の負極端子(5)が端子対(7)を形成し、以下順次左から１１番目（右から２番目）の負極端子(5)まで５対の端子対(7)が形成されている。従って、上面の端子対(7)と下面の端子対(7)は左右方向において半ピッチずれている。また、下面の左端の負極端子(5)および右端の正極端子(4)は端子対を形成せずに電池モジュール(1)の正極端子および負極端子として用いられる。
（電池セルの接続）
図３に示すようい、前記電池セル積層体(6)の上面の６対の端子対(7)は上側ガイド部材(12)を用いて正極端子(4)と負極端子(5)が接触または近接させられた状態で接合され、下面の５対の端子対(7)は下側ガイド部材(40)を用いて正極端子(4)と負極端子(5)が接触または近接させたられた状態で接続され、１２個の電池セル(2)が直列に接続されている。前記上側ガイド部材(12)および下側ガイド部材(40)は電気絶縁性材料からなり、合成樹脂製ガイド部材が好適に用いられる。また、前記端子対(7)はバスバー等の接続部材を用いることなく、正極端子(4)と負極端子(5)が直接接合されている。
The battery cell laminate (6) is stacked in the left-right direction so that the positive electrode terminal (4) and the negative electrode terminal (5) of the battery cell (2) protrude in the vertical direction and the top and bottom are alternately reversed. Further, it is sandwiched by sandwiching frames (9) from both sides in the laminating direction, and is fixed by fasteners (11) such as bolts and nuts that penetrate both sandwiching frames (9) and the entire holding frame (8). . With such an arrangement, the positive electrode terminal (4), the negative electrode terminal (5), the positive electrode terminal (4), ... are alternately arranged in this order from left to right on the upper surface of the battery cell stack (6), and on the lower surface, from left to right The negative electrode terminal (5), the positive electrode terminal (4), the negative electrode terminal (5),... On the top surface, the positive terminal (4) of the leftmost battery cell (2) and the negative terminal (5) of the second battery cell (2) from the left (hereinafter abbreviated as “battery cell (2)”) are provided. A terminal pair (7) is formed, and then six terminal pairs (7) are formed in sequence up to the rightmost negative terminal (5). On the other hand, on the lower surface, the second positive electrode terminal (4) from the left and the third negative electrode terminal (5) from the left form a terminal pair (7), and the eleventh from the left (second from the right). Five terminal pairs (7) are formed up to the negative terminal (5). Therefore, the terminal pair (7) on the upper surface and the terminal pair (7) on the lower surface are shifted by a half pitch in the left-right direction. The negative electrode terminal (5) at the left end and the positive electrode terminal (4) at the right end on the lower surface are used as a positive electrode terminal and a negative electrode terminal of the battery module (1) without forming a terminal pair.
(Battery cell connection)
As shown in FIG. 3, the six terminal pairs (7) on the upper surface of the battery cell laminate (6) are contacted by the positive terminal (4) and the negative terminal (5) using the upper guide member (12). Bonded in a state where they are close to each other, and the five terminal pairs (7) on the bottom surface are in a state where the positive electrode terminal (4) and the negative electrode terminal (5) are brought into contact or close to each other using the lower guide member (40). And twelve battery cells (2) are connected in series. The upper guide member (12) and the lower guide member (40) are made of an electrically insulating material, and a synthetic resin guide member is preferably used. In the terminal pair (7), the positive terminal (4) and the negative terminal (5) are directly joined without using a connecting member such as a bus bar.
図２および図６に示すように、前記上側ガイド部材(12)は、幅方向を上下方向に向けた４つの帯板状枠部材(13a)からなる方形の枠(13)と、前記枠(13)内に固定された２種複数個のガイド部形成材(15d)(15e)とを備え、これらのガイド部形成部材(15d)(15e)によって上面の端子対(7)の数に対応する６つガイド部(14)が形成されている。 As shown in FIGS. 2 and 6, the upper guide member (12) includes a rectangular frame (13) composed of four strip-like frame members (13a) whose width direction is directed in the vertical direction, and the frame ( 13) Two or more guide part forming materials (15d) (15e) fixed in the inside, and these guide part forming members (15d) (15e) correspond to the number of terminal pairs (7) on the upper surface. Six guide portions (14) are formed.
一方のガイド部形成部材15dは、右が高く左が低くなるように傾斜した傾斜壁(15a)（第１壁部）と、この傾斜壁(15a)の上端に連なって上方に真っ直ぐに延びて電池セル本体部(3)の両側面に平行な垂直壁(15b)（第２壁部）とよりなる。他方のガイド部形成部材15eは、左が高く右が低くなるように傾斜した傾斜壁(15c)（第１壁部）と、この傾斜壁(15c)の上端に連なって上方に真っ直ぐに延びて電池セル本体部(3)の両側面に平行な垂直壁(15b)（第２壁部）とよりなる。２種類のガイド部形成部材(15d)(15e)は、傾斜方向の異なる傾斜壁(15a)(15c)が上方に向かって接近するように向かうように交互に並べて配置され、長手方向の両端が前後の枠部材(13a)に固定されている。また、左右端のガイド部形成部材(15d)(15e)を除いて隣り合うガイド部形成部材(15d)の傾斜壁(15a)とガイド部形成部材(15e)の傾斜壁(15c)が下端で結合して一体物となり断面Ｕ字形を呈している。
One guide
２種類のガイド部形成部材(15d)(15e)が上記の態様で配置されることによって、６つのガイド部(14)が６対の端子対(7)と同じピッチで左右方向に並んで形成されている。前記ガイド部(14)は溝部(16)と収容部(17）を有している。即ち、傾斜方向の異なる傾斜壁(15a)(15c)が向かい合うことによって、電池セル(2)側（図面下側）に開口し、電池セル(2)の積層方向（左右方向）の開口幅が底部に向かって小さくなる、換言すると電池セル2から遠ざかるに従って小さくなる溝部(16)が成され、これらの傾斜壁(15a)(15c)に連なる垂直壁(15b)が対向することによって、溝部(16)の底部に連通するスリット状の収容部(17)が形成されている。また、対向する垂直壁(15b)の長手方向（前後方向）の中央部を角形に切り欠くことによって、収容部(17)に左右方向に開放された窓部(19)が形成されている。また、前記ガイド前記溝部(16)の電池セル(2)側の端部における開口幅Ｗ１は、端子対(7)の正極端子(4)と負極端子(5)との間の間隔Ｗ２よりも大きくなるように設定されている。なお、前記間隔Ｗ２は、図７に示した正極端子(4)と負極端子(5)を近接させる前の間隔である。
By arranging the two types of guide part forming members (15d) and (15e) in the above-described manner, six guide parts (14) are formed side by side in the left-right direction at the same pitch as the six terminal pairs (7). Has been. The guide part (14) has a groove part (16) and an accommodating part (17). That is, when the inclined walls (15a) and (15c) with different inclination directions face each other, the battery cell (2) side (lower side in the drawing) opens, and the opening width of the battery cell (2) in the stacking direction (left and right direction) is A groove portion (16) that becomes smaller toward the bottom portion, in other words, becomes smaller as the distance from the
図示例の上側ガイド部材(12)は端子対(7)の数に対応する６つのガイド部(14)を有しているが、上記形状のガイド部形成部材(15d)(15e)の数を増減することによって任意数のガイド部(14)を形成できる。 The upper guide member (12) in the illustrated example has six guide portions (14) corresponding to the number of terminal pairs (7), but the number of the guide portion forming members (15d) and (15e) having the above-described shape is reduced. An arbitrary number of guide portions (14) can be formed by increasing or decreasing.
前記上側ガイド部材(12)の電池セル積層体(6)への取付けおよび端子対(7)の接合は以下にようにして行われる。 The upper guide member (12) is attached to the battery cell stack (6) and the terminal pair (7) is joined as follows.
図７に示すように、上側ガイド部材(12)を、電池セル積層体(6)の各端子対(7)の正極端子(4)および負極端子(5)がガイド部(14)の溝部(16)の開口範囲内に位置するように配置する。 As shown in FIG. 7, the upper guide member (12) is connected to the positive terminal (4) and the negative terminal (5) of each terminal pair (7) of the battery cell stack (6) as a groove ( Arrange it so that it is within the opening range of 16).
ついで、上側ガイド部材(12)と電池セル積層体(6)を相対的に接近させ、枠(13)が電池セル積層体(6)の全保持フレーム(8)上に跨るように載せる。すると、各端子対(7)の正極端子(4)および負極端子(5)がガイド部(14)の溝部(16)入り込み、溝部(16)の傾斜壁(15a)(15c)に案内されて両端子(4)(5)が互いに近づく方向に曲げられていき、正極端子(4)および負極端子(5)の先端部分が収容部(17)に挿入されて両端子(4)(5)が接触状態または近接状態で保持される（図３）。前記収容部(17)に挿入された端子対(7)の正極端子(4)および負極端子(5)は窓部(19)において露出している（図１）。前記溝部(16)の開口幅Ｗ１は正極端子(4)と負極端子(5)の間隔Ｗ２よりも大きいので正極端子(4)および負極端子(5)は容易に溝部(16)に入り込む。また、正極端子(4)および負極端子(5)は傾斜壁(15a)(15c)によって円滑に曲げられていくので接触または近接させるための曲げ加工を必要としない。また、前記端子部(7)は収容部(17)に挿入されることによって補強され、かつ隣りの端子対(7)との間隔が保持されるので、端子対(7)の不本意な変形を防止できる。また、前記各端子対(7)は電池セル本体(3)近くまで電気絶縁性の上側ガイド部材(12)に覆われるので、短絡が防がれる。 Next, the upper guide member (12) and the battery cell stack (6) are relatively brought close to each other, and the frame (13) is placed on the entire holding frame (8) of the battery cell stack (6). Then, the positive terminal (4) and the negative terminal (5) of each terminal pair (7) enter the groove portion (16) of the guide portion (14) and are guided by the inclined walls (15a) (15c) of the groove portion (16). Both terminals (4) and (5) are bent in a direction approaching each other, and the tip portions of the positive electrode terminal (4) and the negative electrode terminal (5) are inserted into the accommodating portion (17), and both terminals (4) and (5) Is held in contact or in proximity (FIG. 3). The positive terminal (4) and the negative terminal (5) of the terminal pair (7) inserted in the housing part (17) are exposed at the window part (19) (FIG. 1). Since the opening width W1 of the groove (16) is larger than the interval W2 between the positive terminal (4) and the negative terminal (5), the positive terminal (4) and the negative terminal (5) easily enter the groove (16). Further, since the positive electrode terminal (4) and the negative electrode terminal (5) are smoothly bent by the inclined walls (15a) and (15c), a bending process for bringing them into contact with or approaching each other is not required. Further, since the terminal portion (7) is reinforced by being inserted into the accommodating portion (17) and the distance between the adjacent terminal pair (7) is maintained, the terminal pair (7) is unintentionally deformed. Can be prevented. Further, since each terminal pair (7) is covered by the electrically insulating upper guide member (12) up to the vicinity of the battery cell body (3), a short circuit is prevented.
前記窓部(19)において露出している正極端子(4)と負極端子(5)を直接接合する。接合方法は、レーザー溶接法、超音波接合法などにより行う。収容部(17)内の正極端子(4)と負極端子(5)は接触または近接しているので容易に接合でき、かつ接続部材を用いないので抵抗の増大を抑制できる。 The positive terminal (4) and the negative terminal (5) exposed in the window (19) are directly joined. The joining method is performed by a laser welding method, an ultrasonic joining method, or the like. Since the positive electrode terminal (4) and the negative electrode terminal (5) in the housing part (17) are in contact with each other or close to each other, they can be easily joined, and since no connection member is used, an increase in resistance can be suppressed.
下側ガイド部材(40)は、上側ガイド部材(12)と上下逆向きの構成であり、枠(13)内に上下を逆転させた姿勢でガイド部形成部材(15d)(15e)が固定されている。また、ガイド部(14)の数は端子対(7)に対応する５つであり、ガイド部形成部材(15d)(15e)の数が上側ガイド部材(12)よりも少ない。従って、ガイド部(14)は、溝部(16)が図面の上側の電池セル(2)側に開口し、収容部(17)が溝部(16)の底部に連通して下方に延びている。また、前記収容部(17)には上側ガイド部材(12)と同じく、垂直壁(15b)を切り欠くことによって窓部(19)が形成されている。但し、上面の端子対(7)と下面の端子対(7)は左右方向に半ピッチずれているので、上下のガイド部材(12)(40)はガイド部(14)の位置が半ピッチずれている。 The lower guide member (40) is configured to be upside down with respect to the upper guide member (12), and the guide portion forming members (15d) (15e) are fixed in an upside down orientation in the frame (13). ing. The number of guide portions (14) is five corresponding to the terminal pair (7), and the number of guide portion forming members (15d) and (15e) is smaller than that of the upper guide member (12). Therefore, the guide part (14) has a groove part (16) that opens to the upper battery cell (2) side of the drawing, and a housing part (17) that communicates with the bottom part of the groove part (16) and extends downward. Further, similarly to the upper guide member (12), a window portion (19) is formed in the housing portion (17) by cutting out the vertical wall (15b). However, since the upper terminal pair (7) and the lower terminal pair (7) are shifted by a half pitch in the left-right direction, the upper and lower guide members (12) (40) are shifted by a half pitch. ing.
前記下側ガイド部材(40)の取付け方法および端子対(7)の正極端子(4)と負極端子(5)の接合は上側ガイド部材(12)に準じる。 The attachment method of the lower guide member (40) and the joining of the positive terminal (4) and the negative terminal (5) of the terminal pair (7) are in accordance with the upper guide member (12).
以上より電池セル積層体(6)の全電池セル(2)が直列に接続される。 As described above, all the battery cells (2) of the battery cell laminate (6) are connected in series.
前記上側ガイド部材(12)および下側ガイド部材(40)は、枠(13)内に複数のガイド部形成部材(15d)(15e)を固定することによって所要数のガイド部(14)が端子対(7)に対応する位置に形成されている。このようなガイド部材(12)(40)を用いることによって複数の端子対(7)を一括して接触または近接させることができるので、部品点数および接続作業を大幅に削減できる。なお、本発明は端子対ごとに別のガイド部材を使用した態様を除外するものではない。
（ガイド部材の変形例）
図８および図９に、前記電池セル積層体(6)に用いる上側ガイド部材の変形例を示す。
In the upper guide member (12) and the lower guide member (40), a plurality of guide portion forming members (15d) and (15e) are fixed in the frame (13) so that a required number of guide portions (14) are terminals. It is formed at a position corresponding to the pair (7). By using such guide members (12) and (40), the plurality of terminal pairs (7) can be brought into contact with or in close proximity to each other, so that the number of parts and connection work can be greatly reduced. In addition, this invention does not exclude the aspect which uses another guide member for every terminal pair.
(Modification of guide member)
8 and 9 show modifications of the upper guide member used for the battery cell stack (6).
上側ガイド部材(20)は一つの収容部(17)に２つの窓部(19)が形成されており、窓部(19)の数以外は図６等の上側ガイド部材(12)と同じ構造である。前記上側ガイド部材(20)により各端子対(7)の正極端子(4)と負極端子(5)が２箇所で接合され、接合面積が大きくなることで接合強度を高めることができる。 The upper guide member (20) has two windows (19) formed in one accommodating portion (17), and the same structure as the upper guide member (12) in FIG. 6 and the like except for the number of windows (19). It is. The upper guide member (20) joins the positive terminal (4) and the negative terminal (5) of each terminal pair (7) at two locations, and the joint area can be increased to increase the joint strength.
図８および図９は上側ガイド部材(20)のみを記載しているが、下面の端子対(7)に対しても同タイプのガイド部材を適用できる。
（電池セルおよびガイド部材の変形例）
図１０および図１１は、他の形状の電池セル(30)と、この電池セル(30)を１２個積層した電池セル積層体(8)に用いるガイド部材(50)を示している。
8 and 9 show only the upper guide member (20), the same type of guide member can be applied to the terminal pair (7) on the lower surface.
(Variation of battery cell and guide member)
10 and 11 show a battery cell (30) of another shape and a guide member (50) used for a battery cell laminate (8) in which twelve battery cells (30) are laminated.
前記電池セル(30)は、方形の電池セル本体(3)の１つの辺部に正極端子(4)および負極端子(5)が設けられている。図示例では、電池セル(30の上辺部に正極端子(4)と負極端子(5)が前後方向に間隔をおいて設けられている。 The battery cell (30) is provided with a positive terminal (4) and a negative terminal (5) on one side of a rectangular battery cell body (3). In the illustrated example, a positive electrode terminal (4) and a negative electrode terminal (5) are provided at intervals in the front-rear direction on the upper side of the battery cell (30.
前記電池セル積層体(8)は、電池セル(30)の正極端子(4)と負極端子(5)が前後で交互に逆になるように左右方向に並べられて積層されている。かかる配置により、電池セル積層体(8)の上面において端子が前後２列に整列し、前列において左から右へ負極端子(5)、正極端子(4)、負極端子(5)…の順に交互に並び、後列において左から右へ正極端子(4)、負極端子(5)、正極端子(4)…の順に交互に並んでいる。そして、前列においては、左端の電池セル(30)の負極端子(5)と左から２番目の電池セル(30（以下「電池セル(30)」を省略する）の正極端子(4)により端子対(7)が形成され、以下順次左から１２番目（右端）の正極端子(4)まで６対の端子対(7)が形成されている。一方、後列においては、左から２番目の負極端子(5)と左から３番目の正極端子(4)により端子対(7)が形成され、以下順次左から１１番目の正極端子(4)まで５対の端子対(7)が形成されている。また、後列の左端の正極端子(4)および右端の負極端子(5)は端子対(7)を形成せずに電池セル積層体(8)の電極端子として用いられる。従って、電池セル積層体(8)の上面において、左から奇数番目の端子対(7)は前列に形成され、偶数番目の端子対(7)は後列に形成され、合計１１対の端子対(7)が前列と後列で半ピッチずれてジグザグ状に並んでいる。なお、図１１においては、説明の便宜上、前列と後列の正極端子(4)および負極端子(5)を左右に僅かにずらして表示し、かつ後列の正極端子(4)および負極端子(5)を前列の正極端子(4)および負極端子(5)をよりも低く表示している。
The battery cell laminate (8) is laminated in the left-right direction so that the positive terminal (4) and the negative terminal (5) of the battery cell (30) are alternately reversed in the front-rear direction. With this arrangement, the terminals are aligned in two rows on the top surface of the battery cell laminate (8), and in the front row, the negative terminal (5), the positive terminal (4), the negative terminal (5), ... are alternately arranged from left to right. In the rear row, the positive terminal (4), the negative terminal (5), the positive terminal (4),... In the front row, the terminal is connected to the negative terminal (5) of the leftmost battery cell (30) and the positive terminal (4) of the second battery cell from the left (30 (hereinafter, “battery cell (30)” is omitted). A pair (7) is formed, and then six terminal pairs (7) are formed sequentially from the left to the twelfth (right end) positive electrode terminal (4), while in the rear row, the second negative electrode from the left The terminal pair (7) is formed by the terminal (5) and the third positive terminal (4) from the left, and then the five terminal pairs (7) are sequentially formed from the left to the eleventh positive terminal (4). Further, the positive electrode terminal (4) at the left end and the negative electrode terminal (5) at the right end in the rear row are used as electrode terminals of the battery cell stack (8) without forming the terminal pair (7). On the upper surface of the laminate (8), odd-numbered terminal pairs (7) from the left are formed in the front row, even-numbered terminal pairs (7) are formed in the back row, and a total of 11 terminal pairs (7) are in the front row. And half in the
前記ガイド部材(50)は、方形の枠内（図示省略）に前列端子対用のガイド部形成部材群(51)および後列端子対用のガイド部形成部材群(52)が前後方向２列で固定されている。これらのガイド部形成部材群(51)(52)は傾斜壁(55a)(55c)の傾斜方向が異なる２種類複数個のガイド部形成部材(53)(54)からなり、前列のガイド部形成用部材群(51)と後列のガイド部形成用部材群(52)はガイド部形成部材(53)(54)の位置が左右方向で半ピッチずれている。前記ガイド部形成部材(53)(54)の前後方向の長さは図２、６等のガイド部形成部材(55d)(55e)の１／２であるが、２種類のガイド部形成部材(53)(54)を交互に配置して電池セル(30)側に開口し開口幅が底部に向かって小さくなる溝部(56)と、垂直壁(55b)により溝部(56)の底部に連通するスリット状の収容部(57)を有するガイド部(58)を形成する構造は図６等に示した上側ガイド部材(12)と共通である。２列のガイド部形成用部材群(51)(52)は、前列と後列でガイド部形成部材(53)(54)の位置が半ピッチずれているので、前列と後列のガイド部(58)も左右方向において半ピッチずれており、左から奇数番目のガイド部(58)は前列に形成され、偶数番目のガイド部(58)は後列に形成され、合計１１個のガイド部(58)が前列と後列で半ピッチずれてジグザグ状に並んでいる。そして、図１１に示すように、前列および後列の全ての端子対(7)の中心と前列または後列のガイド部(58)の中心が一致している。また、各ガイド部(58)の収容部(57)には垂直壁(55b)を切り欠いて形成された窓部(19)が設けられていること、および溝部(56)の開口幅Ｗ１が端子対(7)の正極端子(4)と負極端子(5)の間隔Ｗ２よりも大きくなるように設定されていることも図２、６等のガイド部(14)と共通である。 The guide member (50) includes a front row terminal pair guide portion forming member group (51) and a rear row terminal pair guide portion forming member group (52) in a front and rear direction in a square frame (not shown). It is fixed. These guide part forming member groups (51) and (52) are composed of a plurality of types of guide part forming members (53) and (54) having different inclination directions of the inclined walls (55a) and (55c). The position of the guide part forming members (53) and (54) is shifted by a half pitch in the left-right direction between the member group (51) and the guide part forming member group (52) in the rear row. The length in the front-rear direction of the guide portion forming members (53) and (54) is ½ of the guide portion forming members (55d) and (55e) shown in FIGS. 53) and (54) are alternately arranged to communicate with the bottom of the groove (56) by the vertical wall (55b) and the groove (56) that opens toward the battery cell (30) and the opening width decreases toward the bottom. The structure for forming the guide portion (58) having the slit-like accommodation portion (57) is the same as that of the upper guide member (12) shown in FIG. In the two rows of guide portion forming member groups (51) and (52), the positions of the guide portion forming members (53) and (54) in the front row and the rear row are shifted by a half pitch, so that the guide portions (58) in the front row and the rear row Are shifted by a half pitch in the left-right direction, the odd-numbered guide portions (58) from the left are formed in the front row, the even-numbered guide portions (58) are formed in the back row, and a total of 11 guide portions (58) are formed. The front row and the rear row are arranged in a zigzag shape with a half pitch shift. As shown in FIG. 11, the centers of all the terminal pairs (7) in the front row and the rear row coincide with the centers of the guide portions (58) in the front row or the rear row. Further, the receiving portion (57) of each guide portion (58) is provided with a window portion (19) formed by cutting out the vertical wall (55b), and the opening width W1 of the groove portion (56) is set. It is common to the guide part (14) of FIGS. 2 and 6 that the distance between the positive terminal (4) and the negative terminal (5) of the terminal pair (7) is set to be larger than the interval W2.
前記ガイド部材(50)の取付方法および端子対(7)の正極端子(4)と負極端子(5)の接合は上述の上側ガイド部材(12)に準じる。１１対の端子対(7)を接合することにより１２個の電池セル(30)が直列に接合される。 The mounting method of the guide member (50) and the joining of the positive terminal (4) and the negative terminal (5) of the terminal pair (7) are in accordance with the upper guide member (12) described above. Twelve battery cells (30) are joined in series by joining 11 terminal pairs (7).
この発明による電池モジュールは、ハイブリッド自動車、電気自動車等の電動機駆動用バッテリー装置に好適に用いられる。 The battery module according to the present invention is suitably used for a battery device for driving an electric motor such as a hybrid vehicle or an electric vehicle.
(1)：電池モジュール
(2)(30)：電池セル
(3)：電池セル本体部
(4)：正極端子
(5)：負極端子
(6)(8)：電池セル積層体
(7)：端子対
(12)(20)：上側ガイド部材（ガイド部材）
(40)：下側ガイド部材（ガイド部材）
(14)(58)：ガイド部
(15d)(15e)(53)(54)：ガイド部形成部材
(15a)(15c)(55a)(55c)：傾斜壁（第１壁部）
(15b)(55b)：垂直壁（第２壁部）
(16)(56)：溝部
(17)(57)：収容部
(19)：窓部
(50)：ガイド部材
Ｗ１：溝部の開口幅
Ｗ２：端子対の正極端子と負極端子の間隔
(1): Battery module
(2) (30): Battery cell
(3): Battery cell body
(4): Positive terminal
(5): Negative terminal
(6) (8): Battery cell laminate
(7): Terminal pair
(12) (20): Upper guide member (guide member)
(40): Lower guide member (guide member)
(14) (58): Guide part
(15d) (15e) (53) (54): Guide part forming member
(15a) (15c) (55a) (55c): Inclined wall (first wall)
(15b) (55b): Vertical wall (second wall)
(16) (56): Groove
(17) (57): Containment section
(19): Window
(50): Guide member W1: Opening width W2 of the groove portion: Distance between the positive terminal and the negative terminal of the terminal pair
Claims (6)
隣り合う２つの電池セルにおいて、一方の電池セルの正極端子と他方の電池セルの負極端子が同方向に突出して端子対が形成され、前記端子対の正極端子と負極端子とが電気絶縁性を有するガイド部材によって接触または近接させられた状態で直接接合されている電池モジュール。 A plurality of battery cells having a positive electrode terminal and a negative electrode terminal projecting from the battery cell main body are arranged in a stack to form a battery cell stack, and all the battery cells of the battery cell stack use a positive electrode terminal and a negative electrode terminal. Battery modules connected in series,
In two adjacent battery cells, the positive terminal of one battery cell and the negative terminal of the other battery cell protrude in the same direction to form a terminal pair, and the positive terminal and the negative terminal of the terminal pair are electrically insulating. A battery module that is directly joined in a state of being brought into contact with or in close proximity by a guide member having the same.
前記ガイド部の溝部から挿入された端子対の両端子が収容部において接触または近接し、前記収容部に設けられた窓部内において接合されている請求項２記載の電池モジュール。 The guide portion is open to the battery cell side, and the opening width of the battery cell in the stacking direction is larger than the gap between the two terminals of the terminal pair at the end portion on the battery cell side, and the groove portion becomes smaller toward the bottom portion. A slit-shaped accommodation portion communicating with the bottom of the groove portion,
The battery module according to claim 2, wherein both terminals of the terminal pair inserted from the groove portion of the guide portion are in contact with or close to each other in the housing portion, and are joined in a window portion provided in the housing portion.
前記電池セル積層体の一方の辺部の全端子対が端子対の数のガイド部を有する一つのガイド部材によって接触または近接させられ、他方の辺部の全端子対が端子対の数のガイド部を有する一つのガイド部材によって接触または近接させられている請求項１〜４のうちのいずれかに記載の電池モジュール。 The battery cell is provided with a positive electrode terminal on one side of two opposing sides of the battery cell main body, and a negative electrode terminal on the other side, and the plurality of battery cells are positive terminals. And a plurality of terminal pairs are formed on both sides of the battery cell stack by being arranged so that the negative electrode terminals and the negative electrode terminals are alternately arranged,
All the terminal pairs on one side of the battery cell stack are brought into contact with or brought close to each other by one guide member having the number of terminal pairs, and the number of terminal pairs on the other side is the guide of the number of terminal pairs. The battery module according to claim 1, wherein the battery module is brought into contact with or brought close to by one guide member having a portion.
全端子対が端子対の数のガイド部を有する一つのガイド部材によって接触または近接させられている請求項１〜４のうちのいずれかに記載の電池モジュール。
A positive electrode terminal and a negative electrode terminal are provided at one side of a battery cell main body having a square shape with a space in the longitudinal direction of the side, and a plurality of the battery cells are adjacent to each other. By arranging the terminals and the negative terminals to be alternately arranged, a plurality of terminal pairs are formed in two rows on one side of the battery cell stack,
The battery module according to any one of claims 1 to 4, wherein all the terminal pairs are brought into contact with or brought close to each other by a single guide member having the number of guide portions of the terminal pairs.
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