JP5413650B2 - Battery module - Google Patents

Battery module Download PDF

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JP5413650B2
JP5413650B2 JP2009097999A JP2009097999A JP5413650B2 JP 5413650 B2 JP5413650 B2 JP 5413650B2 JP 2009097999 A JP2009097999 A JP 2009097999A JP 2009097999 A JP2009097999 A JP 2009097999A JP 5413650 B2 JP5413650 B2 JP 5413650B2
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wire
electrode
conductive wire
conductive
posts
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JP2010251052A (en
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慎一 高瀬
雅文 宇野
正 宮崎
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株式会社オートネットワーク技術研究所
住友電装株式会社
住友電気工業株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Description

本発明は、複数個の単電池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 single cells.
例えば電気自動車やハイブリッド車両に搭載される動力用の電池モジュールは、一般に、バスバーを介して多数の単電池を直列接続して構成されている。   For example, a power battery module mounted on an electric vehicle or a hybrid vehicle is generally configured by connecting a large number of single cells in series via a bus bar.
近年、この種の電池モジュールでは、構成する単電池毎の端子電圧を測定し、より適切な充放電制御を達成することが試みられている。そのためには、各単電池の正負の端子に電圧検知線を接続する必要がある。   In recent years, in this type of battery module, an attempt has been made to achieve a more appropriate charge / discharge control by measuring the terminal voltage of each unit cell. For this purpose, it is necessary to connect a voltage detection line to the positive and negative terminals of each unit cell.
そこで従来、電池モジュールの電圧検知線は、下記特許文献1記載のように、絶縁被覆電線の先端を皮剥ぎして芯線に丸型端子を加締接続し、その丸型端子を単電池の電極ポストに嵌合し、電極ポストにバスバーと共にナットで共締めする構造が採用されていた。   Therefore, conventionally, as described in Patent Document 1 below, the voltage detection wire of the battery module is peeled off from the end of the insulation-coated electric wire, and a round terminal is crimped to the core wire, and the round terminal is connected to the electrode of the unit cell. A structure that fits into the post and is fastened with a nut together with the bus bar to the electrode post has been adopted.
特開2000−333343号公報JP 2000-333343 A
しかし、従来の構造では、バスバーと電線と丸型端子との3種の部品を必要とするため、部品点数が多くなるという問題点があった。また、丸型端子を電線に繋いだ後に丸型端子とバスバーとを固定する構造では、配線作業に手間がかかるという問題もあった。   However, the conventional structure requires three types of parts, that is, a bus bar, an electric wire, and a round terminal, so that there is a problem that the number of parts increases. In addition, in the structure in which the round terminal and the bus bar are fixed after the round terminal is connected to the electric wire, there is a problem that the wiring work is troublesome.
本発明は、上記事情に鑑みてなされたもので、その目的は、部品点数を減らすことが可能で、また、配線構造を簡略化することも可能な電池モジュールを提供するところにある。   The present invention has been made in view of the above circumstances, and an object thereof is to provide a battery module capable of reducing the number of parts and simplifying the wiring structure.
本発明の電池モジュールは、それぞれ正極及び負極の両電極ポストを有する複数個の単電池と、導電線からなり前記電極ポストのうち隣り合う前記単電池の異極の一対の電極ポスト間にわたって巻き付けられた後に前記電極ポストに溶接されることで前記異極の電極ポスト間を接続状態とする電極間接続導電線部と、前記電極間接続導電線部を構成する前記導電線から連続して延出された電圧検知用導電線部とを備え、前記各単電池の正極及び負極の各電極ポストが複数本の前記導電線からなる複数個の前記電極間接続導線部によって直列接続され、かつ、前記複数本の導電線からなる複数本の前記電圧検知用導電線部によって前記各電極間接続導電線部の電位測定が可能となっているところに特徴を有する。   The battery module of the present invention is wound between a plurality of unit cells each having both positive and negative electrode posts and a pair of electrode posts of different polarities of the adjacent unit cells made of conductive wires and adjacent to the electrode posts. After that, it is welded to the electrode post so as to connect the electrode poles of different polarity to each other, and the inter-electrode connecting conductive wire portion is continuously extended from the conductive wire constituting the inter-electrode connecting conductive wire portion. A voltage detection conductive wire portion, each electrode post of the positive and negative electrodes of each unit cell is connected in series by a plurality of interelectrode connecting wire portions made of a plurality of the conductive wires, and It is characterized in that the potential measurement of each inter-electrode connection conductive line portion is possible by a plurality of the voltage detection conductive wire portions made of a plurality of conductive wires.
この構造によれば、各単電池の電極ポストに導電線を巻きつけて電極ポストに溶接することにより電極間接続導電線部が構成され、これにより電極ポスト間を接続できるから、電極ポスト間を接続するバスバーを用いる必要がなくなる。   According to this structure, the conductive wire is wound around the electrode post of each unit cell and welded to the electrode post, so that the inter-electrode connecting conductive wire portion is formed, and the electrode posts can be connected to each other. There is no need to use a bus bar to connect.
また、上記電極間接続導電線部を構成する同じ導電線を利用して電圧検知用導電線部が構成されるから、その電圧検知用導電線部により電極ポストにおける電圧信号を外部に取り出すことができるようになる。   In addition, since the voltage detection conductive wire portion is configured using the same conductive wire constituting the inter-electrode connection conductive wire portion, the voltage signal at the electrode post can be taken out by the voltage detection conductive wire portion. become able to.
なお、導電線をエナメル線とすれば、その溶接手法として超音波溶接、レーザー溶接、フュージング(熱カシメ)等を利用することができ、それらによれば、エナメル線の絶縁被覆を溶接部分において逐一剥がす手間が不要になるという利点がある。しかも、溶接部以外の部分においては絶縁被覆が残るから電圧検知用導電線部間の絶縁も確保され、更に、絶縁被覆電線を用いる場合に比べて線束を細くできるから、電池モジュールの一層の小型化も可能になる。   If the conductive wire is an enameled wire, ultrasonic welding, laser welding, fusing (heat caulking), etc. can be used as the welding method. There is an advantage that the trouble of peeling is unnecessary. In addition, since insulation coating remains in portions other than the welded portion, insulation between the voltage detection conductive wire portions is ensured, and furthermore, the wire bundle can be made thinner than in the case of using an insulation coated electric wire. It becomes possible.
本発明によれば、従来構造と比べて部品点数を減らすことが可能となり、かつ、配線構造を簡略化させることも可能になる。   According to the present invention, the number of parts can be reduced as compared with the conventional structure, and the wiring structure can be simplified.
本発明の第1実施形態における電池モジュールを示す斜視図である。It is a perspective view which shows the battery module in 1st Embodiment of this invention. 第1実施形態における電極ポストにエナメル線を配線した状態の側面図である。It is a side view of the state which wired the enamel wire to the electrode post in 1st Embodiment. 第1実施形態における電極ポストにエナメル線を配線した状態の平面図である。It is a top view of the state which wired the enamel wire in the electrode post in 1st Embodiment. 第1実施形態における電極ポストにエナメル線を配線した状態の底面図である。It is a bottom view of the state which wired the enamel wire to the electrode post in 1st Embodiment. 本発明の第2実施形態における電極ポストに装着前のエナメル線と単電池群の斜視図である。It is a perspective view of the enameled wire and the unit cell group before mounting on the electrode post in the second embodiment of the present invention.
<第1実施形態>
以下、本発明の第1実施形態について図1ないし図4を参照して説明する。本実施形態の電池モジュール10は、複数個の単電池11を直列に接続して例えば電気自動車やハイブリッド自動車等の駆動用として構成したものである。
<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. The battery module 10 of the present embodiment is configured to drive a plurality of unit cells 11 connected in series, for example, an electric vehicle or a hybrid vehicle.
各単電池11は、円柱状の本体部12内に図示しない電池要素を収容してなると共に、その本体部12の上下両端面には正負一対の電極ポスト13が突設されている。正負の各電極ポスト13は共に同一の構造である。   Each unit cell 11 contains a battery element (not shown) in a cylindrical main body 12, and a pair of positive and negative electrode posts 13 protrude from both upper and lower end surfaces of the main body 12. Both the positive and negative electrode posts 13 have the same structure.
図1に示すように、第1実施形態の電池モジュール10では、各列複数個の単電池11を同一ピッチで例えば2列に並べた配列をなしており、同一の列で隣り合う単電池11については異なる極性の電極ポスト13が交互に並んでいる。   As shown in FIG. 1, in the battery module 10 of the first embodiment, a plurality of single cells 11 in each column are arranged in, for example, two columns at the same pitch, and the adjacent single cells 11 in the same column. Are alternately arranged with different polarity electrode posts 13.
各単電池11はエナメル線14によって電気的に直列接続されている。図2に示すように、エナメル線14は、同一の列で隣り合う異なる極性の2本の電極ポスト13に渡って所定回数巻かれた後に、例えば超音波溶接により各電極ポスト13に溶着されている。この電極ポスト13間に巻回されて溶接されたエナメル線14によって、異極の一対の電極ポスト13間を接続状態とする電極間接続導電線部15が形成されている。   Each unit cell 11 is electrically connected in series by an enameled wire 14. As shown in FIG. 2, the enamel wire 14 is wound a predetermined number of times over two electrode posts 13 of different polarities adjacent to each other in the same row, and then welded to each electrode post 13 by, for example, ultrasonic welding. Yes. The enamel wire 14 wound and welded between the electrode posts 13 forms an inter-electrode connection conductive wire portion 15 that connects a pair of electrode posts 13 having different polarities.
電極ポスト13間に巻回する回数については、単電池11の電流容量とエナメル線14の導体断面積によって決定することができる。エナメル線14としては、例えば直径0.6mmの銅導体に14ミクロンのポアミドイミド系樹脂の絶縁被膜を形成したものを利用することができる。   The number of windings between the electrode posts 13 can be determined by the current capacity of the unit cell 11 and the conductor cross-sectional area of the enameled wire 14. As the enameled wire 14, for example, a copper conductor having a diameter of 0.6 mm formed with a 14-micron pomidimide resin insulating film can be used.
単電池11群の下面側においては、図2及び図4に示すように、同じ列で隣り合う2本の異極の電極ポスト13間毎に独立した電極間接続導電線部15が形成されている。   On the lower surface side of the unit cell 11 group, as shown in FIG. 2 and FIG. 4, independent inter-electrode connection conductive wire portions 15 are formed between two adjacent electrode posts 13 in the same row. Yes.
一方、単電池11群の上面側においても、図3に示すように、下面側に対して1本分ずれながら同じ列で隣り合う2本の電極ポスト13間に同様に電極間接続導電線部15が形成され、上下両面の各電極間接続導電線部15によって全ての単電池11は互いに直列接続された状態にある。   On the other hand, on the upper surface side of the unit cell 11 group, as shown in FIG. 3, the inter-electrode connecting conductive line portion is similarly connected between two electrode posts 13 adjacent to each other in the same row while being shifted by one from the lower surface side. 15 is formed, and all the unit cells 11 are in series with each other by the inter-electrode connecting conductive line portions 15 on the upper and lower surfaces.
また、単電池11群の上面側では、さらに前記電極間接続導電線部15を形成して余されたエナメル線14が電極間接続導電線部15から連続して延びており、その部分が電圧検知用導電線部16となっている。電圧検知用導電線部16は単電池11群の上面側にのみ形成されているから、単電池11の2本分の直列回路毎に電圧検知用導電線部16が引き出された状態にある。   Further, on the upper surface side of the unit cell 11 group, the enameled wire 14 remaining after forming the interelectrode connecting conductive wire portion 15 continuously extends from the interelectrode connecting conductive wire portion 15, and this portion is a voltage. It is a conductive wire portion 16 for detection. Since the voltage detection conductive wire portion 16 is formed only on the upper surface side of the unit cell 11 group, the voltage detection conductive wire portion 16 is drawn out for every series circuit of two unit cells 11.
これらの電圧検知用導電線部16は、2列に並ぶ単電池11群の1列毎に複数本を束ねてハーネス化されており、各ハーネス17は単電池11群の外側を長辺側の列に沿って配されている。各電圧検知用導電線部16の先端は図示しないECUに接続され、2本の単電池11の直列回路毎に電圧測定が可能となっている。   These voltage detection conductive wire portions 16 are formed into a harness by bundling a plurality of cells for each row of the unit cells 11 arranged in two rows, and each harness 17 is arranged on the long side on the outside of the unit cells 11 group. Arranged along the line. The tip of each voltage detection conductive wire portion 16 is connected to an ECU (not shown), and voltage measurement is possible for each series circuit of the two unit cells 11.
なお、図3に示すように、単電池11群の上面側の端部においては異なる列に属する2本の電極ポスト13間に渡るようにして電極間接続導電線部15が設けられ、両列の単電池11群が直列接続されている。また、これとは反対側の端部には、エナメル線14を電極間接続導電線部15と同等回数だけ巻回して電極ポスト13に溶接されたリード線部18が設けられている。このリード線部18は、直列接続された単電池11群の両端部に位置して、単電池11群の正負の入出力端子を構成する。   As shown in FIG. 3, an inter-electrode connection conductive wire portion 15 is provided at the end on the upper surface side of the unit cell 11 group so as to extend between two electrode posts 13 belonging to different rows. 11 cell groups are connected in series. Further, at the opposite end, a lead wire portion 18 is provided in which the enameled wire 14 is wound the same number of times as the interelectrode connecting conductive wire portion 15 and is welded to the electrode post 13. The lead wires 18 are positioned at both ends of the group of unit cells 11 connected in series, and constitute positive and negative input / output terminals of the unit cell 11 group.
以上の構成によれば、エナメル線14を隣り合う2本の電極ポスト13に渡って巻き付けた後にエナメル線14を各電極ポスト13に溶接することにより、溶接されたエナメル線14によって電極ポスト13間を接続する電極間接続導電線部15が形成され、そのエナメル線14の余長部を引き出すだけで電圧検知用導電線部16が形成される。   According to the above configuration, the enamel wire 14 is wound around the two adjacent electrode posts 13 and then the enamel wire 14 is welded to each electrode post 13. Is formed, and a voltage detection conductive line portion 16 is formed simply by pulling out the extra length portion of the enameled wire 14.
このように1本のエナメル線14によって、従来必要であったバスバー、バスバーを固定するナット、電圧検知用の電線、その電線の先端にカシメ付けて電極ポストにバスバーと共締めされる端子等の各部品が不要になり、構成部品点数を極めて少数にすることができる。   In this way, a single enameled wire 14 is used to provide a bus bar, a nut for fixing the bus bar, a wire for voltage detection, a terminal that is crimped to the tip of the wire and fastened to the electrode post together with the bus bar, etc. Each part becomes unnecessary, and the number of components can be made extremely small.
しかも、組立作業としては、エナメル線14を巻回して電極ポスト13に溶接するだけであるから、バスバーや端子金具を電極ポストに嵌合させた後に電極ポスト毎にナット締めを行う必要があった従来の構造に比べて、組立の作業工数も少なくなる。   In addition, as the assembly work, the enameled wire 14 is only wound and welded to the electrode post 13, so that it is necessary to tighten the nut for each electrode post after fitting the bus bar and the terminal fitting to the electrode post. Compared to the conventional structure, the assembly man-hour is reduced.
また、特に第1実施形態ではエナメル線14を導電線として用いたため、エナメル線14を電極ポスト13に溶接する手法として、超音波溶接を利用することができる。これにより、エナメル線14の絶縁被覆を溶接部分で剥離する必要がなく、絶縁被覆が付着したままで溶接を行っても、絶縁被覆は超音波振動によって自ずと除去されて金属同士を溶着させることができる。   In particular, since the enameled wire 14 is used as the conductive wire in the first embodiment, ultrasonic welding can be used as a technique for welding the enameled wire 14 to the electrode post 13. Thereby, it is not necessary to peel off the insulating coating of the enameled wire 14 at the welded portion, and even if welding is performed with the insulating coating attached, the insulating coating is naturally removed by ultrasonic vibration and the metals are welded together. it can.
従って、溶接された場所以外についてはエナメル線14の絶縁被覆を残すことができるから、電圧検知用導電線部16における絶縁性を保持することができる。これによって、電圧検知用導電線部16を複数本集結させてハーネス化することができ、電池モジュール10を小型化することができる。   Therefore, since the insulation coating of the enameled wire 14 can be left in places other than the welded place, the insulation in the voltage detecting conductive wire portion 16 can be maintained. Accordingly, a plurality of voltage detection conductive wire portions 16 can be assembled into a harness, and the battery module 10 can be reduced in size.
以上のように第1実施形態によれば、1本のエナメル線14を電極間接続導電線部15とそれに連なる電圧検知用導電線部16とに利用できるから、バスバーと端子金具と電線という3つの部品を1本のエナメル線14に置き換えることができ、部品点数を大幅に減少させることができる。また、エナメル線14を電極ポスト13間に巻きつけて溶接するだけで配線作業を行うことができるから配線構造を簡素化することもできる。   As described above, according to the first embodiment, one enameled wire 14 can be used for the interelectrode connecting conductive wire portion 15 and the voltage detecting conductive wire portion 16 connected to the interelectrode connecting conductive wire portion 15. One part can be replaced with one enameled wire 14, and the number of parts can be greatly reduced. In addition, since the wiring work can be performed simply by winding the enamel wire 14 between the electrode posts 13 and welding, the wiring structure can be simplified.
<第2実施形態>
以下、本発明の第2実施形態について図5を参照して説明する。なお、前記第1実施形態と同一部分には同一符号を付して重複する説明を省略し、異なるところのみを説明する。
Second Embodiment
Hereinafter, a second embodiment of the present invention will be described with reference to FIG. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and only different points will be described.
前記第1実施形態では、エナメル線14を2本の電極ポスト13間に直接に巻回して溶接したが、この第2実施形態では、1本のエナメル線14によって、予め所定回数輪状に巻回した予備巻回部19と、その予備巻回部19に連なる余長部からなる電圧検知用導電線部16とが形成されている。これらのエナメル線14は複数本が、その電圧検知用導電線部16において束ねられてハーネス化されている。   In the first embodiment, the enamel wire 14 is directly wound between the two electrode posts 13 and welded. In the second embodiment, the enamel wire 14 is previously wound into a ring shape a predetermined number of times. The preliminary winding portion 19 and the voltage detection conductive wire portion 16 including the extra length portion connected to the preliminary winding portion 19 are formed. A plurality of these enamel wires 14 are bundled in the voltage detection conductive wire portion 16 to form a harness.
そして、予め所定の間隔に並べられた単電池11群のうち、同一の列で隣り合う異なる極性の2本の電極ポスト13に渡って上記予備巻回部19を嵌め込み、これを各電極ポスト13に超音波溶接する。各電極ポスト13に貼着された予備巻回部19によって電極間接続導電部14が形成される。   Then, the preliminary winding part 19 is fitted over two electrode posts 13 of different polarities adjacent to each other in the same row in the group of unit cells 11 arranged in advance at a predetermined interval. Weld ultrasonically. The inter-electrode connection conductive portion 14 is formed by the preliminary winding portion 19 attached to each electrode post 13.
この構造によっても、第1実施形態と同様な効果を奏する。その上、別工程によってエナメル線14に予備巻回部19を予め所定形状に形成しておくから、エナメル線14を電極ポスト13に直接に何重にも巻き付ける工程が必要なくなり、配線作業を一層簡素化することができる。   This structure also has the same effect as the first embodiment. In addition, since the pre-winding portion 19 is formed in a predetermined shape around the enameled wire 14 in a separate process, there is no need for a step of directly winding the enameled wire 14 around the electrode post 13 and the wiring work is further increased. It can be simplified.
<他の実施形態>
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれる。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1)上記実施形態では、単電池11の形状を円柱状としたが、例えば多角形の柱状や断面が長円形や角型の単電池11であってもよい。   (1) In the said embodiment, although the shape of the cell 11 was made into the column shape, the polygonal column shape and the cross-section may be the oval or the square cell 11 for example.
(2)上記実施形態では、エナメル線14を使用したが、これに限らず被覆電線を使用してもよい。この場合には、電極ポスト13に巻回する部分については予め絶縁被覆を剥がしておき、その部分の芯線を電極ポスト13間に巻き付けた後に芯線を電極ポスト13に溶接すればよい。また、エナメル線14や絶縁電線を使用するに限らず、例えば銅の裸線を使用して電極ポスト13間に巻回して溶接し、余長部分に絶縁チューブを被せて束ねることで複数本の電圧検知用導電線部16としてもよい。   (2) Although the enameled wire 14 is used in the above embodiment, the present invention is not limited to this, and a covered electric wire may be used. In this case, the insulating coating may be peeled off in advance from the portion wound around the electrode post 13, and the core wire may be welded to the electrode post 13 after winding the core wire between the electrode posts 13. Moreover, it is not limited to using the enameled wire 14 or the insulated wire. For example, a copper bare wire is used to be wound between the electrode posts 13 and welded, and an extra length portion is covered with an insulating tube and bundled. The voltage detection conductive wire portion 16 may be used.
(3)上記各実施形態では、超音波溶接によって導電線を電極ポスト13に溶接したが、これに限らず、レーザー溶接やヒュージング(熱カシメ)によって溶接してもよい。   (3) In each said embodiment, although the electroconductive wire was welded to the electrode post 13 by ultrasonic welding, you may weld not only by this but by laser welding or fusing (thermal caulking).
(4)上記各実施形態では直列に連なる2本の単電池11毎に電圧を検出できる構成としたが、例えば単電池11群の下面側において上面側と同様に電圧検知用導電線部16を有する接続構造とすれば、1本の単電池11毎に電圧を検出することができる。また、3本以上の単電池11毎に電圧を検知できる構成としてもよい。   (4) In each of the above embodiments, the voltage can be detected for each of the two unit cells 11 connected in series. For example, the voltage detection conductive wire portion 16 is provided on the lower surface side of the group of unit cells 11 similarly to the upper surface side. If it has the connection structure which has, a voltage can be detected for every single cell 11. FIG. Moreover, it is good also as a structure which can detect a voltage for every three or more cell 11.
10… 電池モジュール
11… 単電池
12… 本体部
13… 電極ポスト
14…エナメル線
15… 電極間接続導電線部
16… 電圧検知用導電線部
17… ハーネス
18…リード線部
19…予備巻回部
DESCRIPTION OF SYMBOLS 10 ... Battery module 11 ... Cell 12 ... Main-body part 13 ... Electrode post 14 ... Enamel wire 15 ... Interelectrode connection conductive wire part 16 ... Voltage detection conductive wire part 17 ... Harness 18 ... Lead wire part 19 ... Preliminary winding part

Claims (2)

  1. それぞれ正極及び負極の両電極ポストを有する複数個の単電池と、
    導電線からなり前記電極ポストのうち隣り合う前記単電池の異極の一対の電極ポスト間にわたって巻き付けられた後に前記電極ポストに溶接されることで前記異極の電極ポスト間を接続状態とする電極間接続導電線部と、
    前記電極間接続導電線部を構成する前記導電線から連続して延出された電圧検知用導電線部とを備え、前記各単電池の正極及び負極の各電極ポストが複数本の前記導電線からなる複数個の前記電極間接続導線部によって直列接続され、かつ、前記複数本の導電線からなる複数本の前記電圧検知用導電線部によって前記各電極間接続導電線部の電位測定が可能となっている電池モジュール。
    A plurality of single cells each having both positive and negative electrode posts;
    An electrode made of a conductive wire and wound between a pair of electrode posts of different polarities of adjacent unit cells among the electrode posts, and then welded to the electrode posts so as to connect the electrode posts of different polarities Between the connecting conductive wires,
    A voltage detection conductive wire portion continuously extending from the conductive wire constituting the inter-electrode connection conductive wire portion, and each of the positive and negative electrode posts of each unit cell has a plurality of the conductive wires. It is possible to measure the potential of each inter-electrode connecting wire portion by connecting a plurality of the inter-electrode connecting wire portions in series and using the plurality of voltage detecting conductive wire portions comprising the plurality of conducting wires. Battery module.
  2. 前記導電線はエナメル線であることを特徴とする請求項1記載の電池モジュール。   The battery module according to claim 1, wherein the conductive wire is an enameled wire.
JP2009097999A 2009-04-14 2009-04-14 Battery module Expired - Fee Related JP5413650B2 (en)

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