JP2007194036A - Connection plate of battery pack - Google Patents

Connection plate of battery pack Download PDF

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Publication number
JP2007194036A
JP2007194036A JP2006010064A JP2006010064A JP2007194036A JP 2007194036 A JP2007194036 A JP 2007194036A JP 2006010064 A JP2006010064 A JP 2006010064A JP 2006010064 A JP2006010064 A JP 2006010064A JP 2007194036 A JP2007194036 A JP 2007194036A
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Prior art keywords
connection plate
slit
connection
welding
battery pack
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JP2006010064A
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JP5005222B2 (en
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Yasuyuki Tsunakawa
川 康 之 綱
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Sanoh Industrial Co Ltd
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Sanoh Industrial Co Ltd
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Priority to JP2006010064A priority Critical patent/JP5005222B2/en
Priority to PCT/JP2007/050696 priority patent/WO2007083702A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/36—Electric or electronic devices
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection plate of battery pack with little effect of reactive current, which can be stably welded regardless of copper used as main material, contributing to improvement of handling property and workability of welding. <P>SOLUTION: A slit 12 extending along longitudinal direction is formed on a body of the connection plate 10, and fine parts 14 which can be blown out by an instantaneous reactive current are formed at both end parts of the body of the connection plate 10 where the slit terminates. By the above, the closed slit is formed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、複数の電池セルを接続する接続板に係り、特に、取扱性に優れるとともに接続板を溶接するときに発生する無効電流の影響を少なくした組電池の接続板に関する。   The present invention relates to a connection plate for connecting a plurality of battery cells, and more particularly, to a connection plate for an assembled battery that has excellent handleability and reduces the influence of reactive current generated when the connection plate is welded.

二次電池からなる電池セルを直列または並列につないだ組電池は、電動式自転車、ハイブリッド車をはじめとして、さまざまな用途で広く利用されている。そして近年では、バッテリの高容量化、高密度化が急速に進んでいる。   A battery pack in which battery cells including secondary batteries are connected in series or in parallel is widely used in various applications including electric bicycles and hybrid vehicles. In recent years, battery capacity and density have been rapidly increasing.

この種の組電池では、電池セル同士を直列または並列に接続するには、帯状の接続板が用いられており、この接続板は抵抗溶接により溶接されている。そこで、図６および図７に従来の接続板を示す。   In this type of battery pack, a strip-shaped connection plate is used to connect battery cells in series or in parallel, and this connection plate is welded by resistance welding. A conventional connection plate is shown in FIGS.

図６および図７において、参照番号１は接続板を示し、この接続板１は、帯状の金属製薄板であって、図７に示すように、中央部２が平行にせり上がった段形状となっている。そして、接続板１の両側短辺の中央からは、スリット４が長辺と平行に中央部２に達する位置まで延びている。これらのスリット４の両側には溶接ビード５が形成されている。接続板１の材質は、従来は、ニッケル材、鉄の薄板にニッケルめっきを施したものや、銅板の表裏両面にニッケル薄板を接合したクラッド材等が用いられている。
図８に示すように、このような接続板１を抵抗溶接により電池セル７に溶接する場合、溶接電極６を接続板１に押し付けた状態で電流を流す。これにより、電気抵抗により発生するジュール熱により溶接ビード５が溶け、接続板１を電池セル７に溶接することができる。 6 and 7, reference numeral 1 indicates a connection plate, and this connection plate 1 is a strip-shaped metal thin plate, and as shown in FIG. It has become. The slit 4 extends from the center of the short sides on both sides of the connecting plate 1 to a position reaching the central portion 2 in parallel with the long sides. Weld beads 5 are formed on both sides of these slits 4. Conventionally, the connecting plate 1 is made of a nickel material, a thin iron plate plated with nickel, or a clad material in which a nickel thin plate is bonded to both front and back surfaces of a copper plate.
As shown in FIG. 8, when such a connection plate 1 is welded to the battery cell 7 by resistance welding, a current is passed in a state where the welding electrode 6 is pressed against the connection plate 1. Thereby, the weld bead 5 is melted by the Joule heat generated by the electric resistance, and the connection plate 1 can be welded to the battery cell 7.

接続板１の材質としては、電池の接続板としての本来の機能からいえば電気抵抗の低い銅が好ましい。しかし、銅製の接続板を抵抗溶接するとなると、導電性の高さという長所が逆に障害になる。   As the material of the connection plate 1, copper having a low electric resistance is preferable in terms of the original function as the connection plate of the battery. However, when resistance welding a copper connection plate, the advantage of high conductivity is an obstacle.

そこで、本出願人は、図９に示すような組電池の接続板１を提案している（特許文献１）。この接続板１では、スリット４、４を長くして、その間の接続部８が細い形状になっている。この接続板１では、スリット４が長く、また瞬間的な無効電流で接続部８が溶断することで、無効電流の影響が少なくなり、銅製の接続板１でも安定した溶接が可能となった。
特許第３６３６６０３号公報 Therefore, the present applicant has proposed a battery pack connection plate 1 as shown in FIG. 9 (Patent Document 1). In this connection plate 1, the slits 4, 4 are lengthened, and the connection portion 8 between them is thin. In this connection plate 1, the slit 4 is long, and the connection portion 8 is melted by an instantaneous reactive current, so that the influence of the reactive current is reduced, and the copper connection plate 1 can be stably welded.
Japanese Patent No. 3636603

しかしながら、図９の接続板１の場合、材質に銅を用いても安定した抵抗溶接が可能となる利点がある反面、スリット４が長くなる結果、構造上取り扱い面での問題がある。すなわち接続板の製造過程のめっき工程などで、長いスリット４に他の接続板が入り込むなどして互いに絡み合ってしまい、曲がり、捻れ等の変形、破損が多発するという問題があった。   However, in the case of the connection plate 1 of FIG. 9, there is an advantage that stable resistance welding is possible even if copper is used as the material, but there is a problem in terms of handling due to the structure that the slit 4 becomes long. That is, there is a problem that, during the plating process in the manufacturing process of the connection plate, the other connection plates enter the long slit 4 and become entangled with each other, resulting in frequent deformation and breakage such as bending and twisting.

この点、接続部８を無くして２分割形状とすることが考えられる。しかし、接続板１を２分割にすると、電池セル７に溶接するときに、位置決めのセッティングに手間がかかり、作業能率が非常に悪いという問題があり、実用性に欠ける。   In this regard, it can be considered that the connecting portion 8 is eliminated to form a two-divided shape. However, if the connecting plate 1 is divided into two parts, there is a problem that it takes time to set the positioning when welding the battery cell 7 and the work efficiency is very poor, so that the practicality is lacking.

そこで、本発明の目的は、前記従来技術の有する問題点を解消し、無効電流の影響を少なくし、銅を材質としながら安定した溶接を行え、取り扱い性、溶接の作業性の向上にも資するようにした組電池の接続板を提供することにある。   Therefore, the object of the present invention is to solve the problems of the prior art, reduce the influence of reactive current, perform stable welding while using copper as a material, and contribute to improvement in handling and welding workability. An object of the present invention is to provide a connection board for an assembled battery.

前記の目的を達成するために、本発明は、複数の電池セルからなる組電池において電池セル同士を接続し銅を主材料とする接続板であって、前記接続板本体に長手方向に延びるスリットを形成し、前記スリットの終止する接続板の本体の両端部に溶接時の瞬間的無効電流で溶断可能な細部を形成し、閉じたスリットとしたことを特徴とするものである。   In order to achieve the above object, the present invention provides a connection plate that connects battery cells and uses copper as a main material in an assembled battery including a plurality of battery cells, the slit extending in the longitudinal direction in the connection plate main body. And is formed as a closed slit by forming details that can be melted by an instantaneous reactive current during welding at both ends of the main body of the connection plate where the slit ends.

また、本発明は、前記の接続板において、前記接続板本体の胴部の幅を溶接ビードの形成された残余の部分の幅と較べて大きく設定したことを特徴としている。   Further, the present invention is characterized in that, in the connection plate, the width of the body portion of the connection plate body is set larger than the width of the remaining portion where the weld bead is formed.

また、本発明は、前記の接続板において、前記スリットには、中間に両側の前記胴部を接続し、溶接時の瞬間的無効電流で溶断可能な細部を少なくとも１つ形成したことを特徴とするものである。   Further, the present invention is characterized in that, in the connection plate, at least one detail that can be melted by an instantaneous reactive current during welding is formed in the slit by connecting the body portions on both sides in the middle. To do.

本発明によれば、スリットが接続板本体の両端部の細部で閉じている形状になっているため、他の接続板が入り込む余地がないので、変形や破損を防止し取り扱い性を高められる上に、無効電流の影響を少なくし、銅を材質としながらも安定した溶接を行うことが可能となる。
また、本発明によれば、胴部の幅を大きくすることにより、放電時の電流経路の電気抵抗を下げる効果が大きくなり、効率的な充放電が可能となる。 According to the present invention, since the slit is closed at the details of both ends of the connection plate body, there is no room for other connection plates to enter, so that deformation and breakage can be prevented and handling can be improved. In addition, the influence of the reactive current is reduced, and stable welding can be performed while using copper as the material.
Further, according to the present invention, by increasing the width of the body portion, the effect of lowering the electrical resistance of the current path during discharge is increased, and efficient charging / discharging becomes possible.

以下、本発明による組電池の接続板の一実施形態について、添付の図面を参照しながら説明する。
第１実施形態
図１は、第１実施形態による組電池の接続板を示す平面図、図２は同接続板の側面図である。この接続板１０は、図２に示すように、本体中央の胴部１１が平行にせり上がった段形状となっている。この実施形態では、接続板１０の材質は銅が用いられている。なお、接続板１０の表面には、Ｎｉめっきが施されているが、これに限定されるものではなく、銅板自体を用いることもできる。 Hereinafter, an embodiment of a connection plate for a battery pack according to the present invention will be described with reference to the accompanying drawings.
First embodiment
FIG. 1 is a plan view showing a connection plate of an assembled battery according to the first embodiment, and FIG. 2 is a side view of the connection plate. As shown in FIG. 2, the connecting plate 10 has a step shape in which the body 11 at the center of the main body rises in parallel. In this embodiment, the connection plate 10 is made of copper. The surface of the connecting plate 10 is plated with Ni, but is not limited to this, and a copper plate itself can be used.

接続板１０の本体の中心線上にそって長手方向にスリット１２が形成されている。このスリット１２は、長辺と平行に延びて、胴部１１を２つに隔てている。そして、このスリット１２は、接続板１０の本体の両端部まで延び、短辺に近い位置で終止するようになっている。このようにして、閉じたスリット１２の終止する接続板１０の両端部には細部１４が形成されている。この細部１４は、溶接時の瞬間的無効電流で溶断可能な細さに形成されている。なお、図１、２において、接続板１０の裏面にはスリット１２の両側に溶接ビード５が形成されている。   A slit 12 is formed in the longitudinal direction along the center line of the main body of the connection plate 10. The slit 12 extends in parallel with the long side and divides the body 11 into two. And this slit 12 is extended to the both ends of the main body of the connection board 10, and stops at the position near a short side. In this way, details 14 are formed at both ends of the connecting plate 10 where the closed slit 12 ends. The details 14 are formed in such a thickness that can be melted by an instantaneous reactive current during welding. 1 and 2, weld beads 5 are formed on both sides of the slit 12 on the back surface of the connection plate 10.

以上のように構成される接続板１０によれば、接続板１０を抵抗溶接により電池セル７に溶接する場合、図３に示すように、溶接電極６を接続板１０の端部に押し付けた状態で電流を流す。矢印で記すように、接続板１０の両端部に形成されている細部１４には、通電の瞬間に無効電流が流れるので、発熱により細部１４は溶断される。そして同時に、溶接ビード５が溶融するので、接続板１０を電池セル７に溶接することができる。このように細部１４は、瞬間的に溶断してしまうので、スリット１２が無効電流を遮断し、電気抵抗の小さな銅を材質とする接続板１０であっても、無効電流による影響を少なくして安定した溶接を実現することができる。実際、本実施形態の接続板１０と図９に示した従来の接続板１とを同じ電池セルに溶接したところ、同等の溶接強度を得ることができた。   According to the connection plate 10 configured as described above, when the connection plate 10 is welded to the battery cell 7 by resistance welding, the welding electrode 6 is pressed against the end of the connection plate 10 as shown in FIG. Pass current through. As indicated by the arrows, a reactive current flows in the details 14 formed at both ends of the connection plate 10 at the moment of energization, so the details 14 are melted by heat generation. At the same time, since the weld bead 5 is melted, the connection plate 10 can be welded to the battery cell 7. As described above, since the details 14 are melted instantaneously, even if the slit 12 blocks the reactive current and the connection plate 10 is made of copper having a small electrical resistance, the influence of the reactive current is reduced. Stable welding can be realized. Actually, when the connection plate 10 of the present embodiment and the conventional connection plate 1 shown in FIG. 9 were welded to the same battery cell, the same welding strength could be obtained.

しかも、本実施形態の接続板１０では、細部１４を形成したことによってスリット１２を閉じたスリットとすることができるので、構造上、次のような取り扱いの面での効果が得られる。すなわち、従来、接続板をめっきをする工程などでは、長いスリットに他の接続板が入り込むなどして互いに絡み合ってしまい、曲がり、捻れ等の変形、破損が多発するという問題があったが、本実施形態の接続板１０では、スリット１２が両端部の細部１４で閉じている形状になっているため、他の接続板が入り込む余地がないので、変形や破損を防止できる。
次に、図４は、本実施形態による接続板１０の変形例を示す。この図４の接続板１０では、スリット１２の中間には両側の胴部１１を接続する細部１５が形成されている。なお、細部１５は、溶接時の瞬間的無効電流で溶断可能である点は細部１４と同様である。
この接続板１０では、両端部にある細部１４の他に、細部１５を付け加えているため、接続板１０の本体自体の剛性を高めることができるので、変形、破損がより生じ難くなる利点がある。なお、溶接時の通電によって、これらの細部１４、１５は瞬間的に溶断する点は上述した通りである。なお、図４は、細部１５を１つだけ形成した例であるが、これに限定されるものではなく、複数箇所に形成するようにしてもよい。 Moreover, in the connection plate 10 of the present embodiment, since the slits 12 can be closed by forming the details 14, the following advantages in terms of structure can be obtained. In other words, conventionally, in the process of plating the connection plate, there is a problem that other connection plates get entangled with each other by entering into a long slit, resulting in frequent deformation and breakage such as bending and twisting. In the connection plate 10 of the embodiment, the slit 12 has a shape that is closed by the details 14 at both ends, so that there is no room for other connection plates to enter, so that deformation and breakage can be prevented.
Next, FIG. 4 shows a modification of the connection plate 10 according to the present embodiment. In the connecting plate 10 of FIG. 4, details 15 for connecting the body portions 11 on both sides are formed in the middle of the slit 12. The detail 15 is the same as the detail 14 in that it can be blown by an instantaneous reactive current during welding.
In this connection plate 10, since the detail 15 is added in addition to the details 14 at both ends, the rigidity of the main body of the connection plate 10 can be increased, so that there is an advantage that deformation and breakage are less likely to occur. . As described above, the details 14 and 15 are instantaneously melted by energization during welding. FIG. 4 shows an example in which only one detail 15 is formed. However, the present invention is not limited to this, and it may be formed at a plurality of locations.

第２実施形態
次に、本発明の第２実施形態による組電池の接続板について図５を参照して説明する。
図５は、本発明の第２実施形態による組電池の接続板を示す平面図である。この第２実施形態の接続板１０では、本体の胴部１１の幅Ａが溶接ビード５の形成されている残余の部分の幅Ｂと較べて大きく設定されている。スリット１２の両端は細部１４で終止している点は第１実施形態と同様である。 Second Embodiment Next, an assembled battery connection plate according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 5 is a plan view showing a connection plate of an assembled battery according to the second embodiment of the present invention. In the connection plate 10 of the second embodiment, the width A of the body 11 of the main body is set larger than the width B of the remaining portion where the weld beads 5 are formed. The point that both ends of the slit 12 are terminated with the details 14 is the same as in the first embodiment.

この第２実施形態の接続板１０によれば、溶接での作用効果は第１実施形態と同様であるが、電池セルを接続して組電池とした場合に、胴部１１の幅が大きくなっているため、放電時の電流経路の電気抵抗を下げる効果が大きく、効率的な充放電が可能となる。実際、本実施形態の接続板１０で電池セルを接続したもの（胴部１１の幅Ａを１割増し）と、図９の接続板１で電池セルを接続したものとで、同じ条件で２セル間の抵抗値を測定したところ、本実施形態の接続板１０では、７％程度抵抗が減少しているという結果が得られた。   According to the connection plate 10 of the second embodiment, the effect of welding is the same as that of the first embodiment, but when the battery cell is connected to form an assembled battery, the width of the body 11 is increased. Therefore, the effect of lowering the electrical resistance of the current path during discharging is great, and efficient charging / discharging becomes possible. Actually, a battery cell connected by the connection plate 10 of the present embodiment (the width A of the body 11 is increased by 10%) and a battery cell connected by the connection plate 1 of FIG. When the resistance value between them was measured, in the connection plate 10 of the present embodiment, a result that the resistance decreased by about 7% was obtained.

以上、本発明に係る溶接方法について、好適な実施形態を挙げて説明したが、本発明では、接続板１０を溶接し組電池にする場合、電池セルの直列接続、並列接続、直列と並列の組み合わせのいずれにも利用できることはもちろんである。   As mentioned above, although the preferred embodiment was mentioned and demonstrated about the welding method which concerns on this invention, when welding the connection board 10 into an assembled battery, in this invention, battery cell series connection, parallel connection, series and parallel Of course, it can be used for any combination.

本発明による組電池の接続板の第１の実施形態を示す平面図。The top view which shows 1st Embodiment of the connection board of the assembled battery by this invention. 図１の組電池の接続板の側面図。The side view of the connection board of the assembled battery of FIG. 図１の組電池の接続板での溶接時の作用を示す平面図。The top view which shows the effect | action at the time of welding with the connection board of the assembled battery of FIG. 図１の組電池の接続板の変形例を示す平面図。The top view which shows the modification of the connection board of the assembled battery of FIG. 本発明による組電池の接続板の第２の実施形態を示す平面図。The top view which shows 2nd Embodiment of the connection board of the assembled battery by this invention. 従来技術に係る組電池の接続板を示す平面図。The top view which shows the connection board of the assembled battery which concerns on a prior art. 図６の組電池の接続板の側面図。The side view of the connection board of the assembled battery of FIG. 従来の組電池の接続板を電池セルに溶接するときの状況を示す側面図。The side view which shows the condition when welding the connection board of the conventional assembled battery to a battery cell. 従来技術に係る組電池の接続板の他の例を示す平面図。The top view which shows the other example of the connection board of the assembled battery which concerns on a prior art.

符号の説明Explanation of symbols

５ 溶接ビード
７ 電池セル
６ 溶接電極
１０ 接続板
１１ 胴部
１２ スリット
１４ 細部
１５ 細部 5 Weld Bead 7 Battery Cell 6 Welding Electrode 10 Connection Plate 11 Body 12 Slit 14 Details 15 Details

Claims (3)

複数の電池セルからなる組電池において電池セル同士を接続し銅を主材料とする接続板であって、
前記接続板本体に長手方向に延びるスリットを形成し、前記スリットの終止する接続板の本体の両端部に溶接時の瞬間的無効電流で溶断可能な細部を形成し、閉じたスリットとしたことを特徴とする組電池の接続板。 In a battery pack composed of a plurality of battery cells, the battery cells are connected to each other and the main material is copper,
A slit extending in the longitudinal direction is formed in the connection plate main body, and details that can be melted by an instantaneous reactive current at the time of welding are formed at both ends of the connection plate main body where the slit ends to form a closed slit. A battery pack connection board. 前記接続板本体の胴部の幅を溶接ビードの形成された残余の部分の幅と較べて大きく設定したことを特徴とする請求項１に記載の組電池の接続板。   2. The battery pack connection plate according to claim 1, wherein a width of the body portion of the connection plate body is set to be larger than a width of a remaining portion where a weld bead is formed. 前記スリットには、中間に両側の前記胴部を接続し、溶接時の瞬間的無効電流で溶断可能な細部を少なくとも１つ形成したことを特徴とする請求項１または２に記載の組電池の接続板。   3. The assembled battery according to claim 1, wherein the slit is formed with at least one detail that can be melted by an instantaneous reactive current during welding by connecting the body portions on both sides in the middle. Connection board.
JP2006010064A 2006-01-18 2006-01-18 Battery connection board Expired - Fee Related JP5005222B2 (en)

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JP2008287992A (en) * 2007-05-16 2008-11-27 Sony Corp Battery pack
US8597810B2 (en) 2007-05-16 2013-12-03 Sony Corporation Battery pack
US8614016B2 (en) 2007-05-16 2013-12-24 Sony Corporation Battery pack having enhanced manufacturing efficiency
US8647764B2 (en) 2007-05-16 2014-02-11 Sony Corporation Battery pack
US8691412B2 (en) 2007-05-16 2014-04-08 Sony Corporation Battery pack
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WO2012008138A1 (en) * 2010-07-15 2012-01-19 パナソニック株式会社 Method for manufacturing assembled battery, and assembled battery
JP4965753B2 (en) * 2010-07-15 2012-07-04 パナソニック株式会社 Manufacturing method of assembled battery and assembled battery
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JP2013127863A (en) * 2011-12-16 2013-06-27 Lithium Energy Japan:Kk Power storage device and bus bar for use in the same
US9553294B2 (en) 2011-12-16 2017-01-24 Gs Yuasa International Ltd. Electric storage device, manufacturing method of electric storage device, and bus bar used for electric storage device
US10741871B2 (en) 2011-12-16 2020-08-11 Gs Yuasa International Ltd. Electric storage device, manufacturing method of electric storage device, and bus bar used for electric storage device

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