WO2012118047A1 - Bus bar - Google Patents

Bus bar Download PDF

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Publication number
WO2012118047A1
WO2012118047A1 PCT/JP2012/054852 JP2012054852W WO2012118047A1 WO 2012118047 A1 WO2012118047 A1 WO 2012118047A1 JP 2012054852 W JP2012054852 W JP 2012054852W WO 2012118047 A1 WO2012118047 A1 WO 2012118047A1
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WO
WIPO (PCT)
Prior art keywords
bus bar
conductor
terminal
folded
folded portion
Prior art date
Application number
PCT/JP2012/054852
Other languages
French (fr)
Japanese (ja)
Inventor
大輔 橋本
康治 福本
末谷　正晴
Original Assignee
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 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 filed Critical 株式会社オートネットワーク技術研究所
Publication of WO2012118047A1 publication Critical patent/WO2012118047A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
    • H01R35/02—Flexible line connectors without frictional contact members
    • 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
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6553—Terminals or leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/005—Laminated bus-bars
    • 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

Definitions

  • the present invention relates to a bus bar excellent in bending performance.
  • Patent Document 1 discloses a wire harness including a plurality of round electric wires arranged in parallel and a flat cylindrical corrugated tube covering the periphery of the round electric wires.
  • the surface area of the part that forms the contour of the entire wire bundle becomes larger than when the multiple wires are bundled in a state of being stacked vertically and horizontally, and heat dissipation of the entire wire bundle is achieved. Increases nature.
  • a bus bar made of a plate-like conductor is often adopted as a power line mounted on a vehicle. Since the bus bar has a flat shape, the conductor portion has a larger surface area and higher heat dissipation than a round electric wire having a round core wire having the same cross-sectional area.
  • Patent Document 1 when the power line is constituted by a bundle of wires made up of a plurality of covered wires arranged in parallel, the ends of the core wires in each of the plurality of covered wires are bound together electrically. Terminals to be connected are attached to both ends of the wire bundle.
  • the present invention provides a bus bar that is excellent in heat dissipation and laying workability even when a conductor has a large cross-sectional area for power lines, and that can prevent excessive heat generation due to poor electrical connection or the like. Objective.
  • the bus bar according to the present invention includes the following components.
  • the first component is a portion formed of a conductor that is formed extending in the first direction and in which a folded portion that forms a groove along the second direction that intersects the first direction is formed in part. Is an intermediate part.
  • a 2nd component is a terminal part which is a part which consists of a conductor connected on both sides in the 1st direction of an intermediate part, and is connected with another member.
  • the intermediate portion has a structure in which a plurality of plate-like conductors are overlapped.
  • plate-like conductor is used as a term including, for example, a conductor having a thickness of about 0.1 millimeter and a foil-like conductor that is much thinner than that.
  • the bus bar which concerns on this invention WHEREIN:
  • intersects the longitudinal direction is formed in the intermediate part of the bus bar. Since the folded portion is easily elastically deformed so that the width of the groove expands and contracts, the intermediate portion of the bus bar is easily bent elastically at the folded portion. That is, even when the bus bar according to the present invention is formed to be relatively short and thick, the bus bar has flexibility to bend elastically in the direction of its thickness at the folded portion.
  • the bus bar according to the present invention is particularly easily bent at the folded portion. Therefore, when the force of the direction which bends it with respect to the bus-bar which concerns on this invention is added, only a folding
  • a bending trace means the site
  • terminal portions at both ends of the bus bar are portions that are connected to the middle portion, poor electrical connection is unlikely to occur at the terminal portions of the bus bar.
  • the bus bar according to the present invention has excellent heat dissipation and laying workability even when the conductor has a large cross-sectional area for power lines, and prevents excessive heat generation due to poor electrical connection or the like. it can.
  • the intermediate portion when the intermediate portion has a multiple structure in which a plurality of thin plate-like conductors overlap, the intermediate portion itself has a thickness direction, that is, a direction in which the plurality of plate-like conductors are stacked. It has flexibility. Therefore, in the bus bar according to the present invention, when the intermediate portion has a multiple structure, the bending performance of the intermediate portion is further enhanced by the action of the folded portion and the action of the multiple structure.
  • bus bar 1 concerning a 1st embodiment of the present invention. It is a side view of the bus bar 1 in the middle of being attached to a terminal block. It is a figure which shows the example of the manufacturing method of the bus bar. It is a perspective view of 1 A of bus bars which concern on 2nd Embodiment of this invention.
  • the bus bar 1 is used, for example, as a power line that connects an inverter circuit and a motor or a generator in an electric vehicle, or as a power line that connects a battery and an inverter circuit.
  • the bus bar 1 is a conductor member made of metal such as copper, for example, and is formed to extend in one direction as shown in FIG.
  • the longitudinal direction of the bus bar 1 is referred to as a first direction
  • the width direction of the bus bar 1, that is, a direction orthogonal to the first direction is referred to as a second direction. 1 to 4, the first direction is the left-right direction.
  • the bus bar 1 includes an intermediate portion 11 and terminal portions 12 at both ends.
  • the bus bar 1 is laid as a part of a power transmission path to each phase of an electric motor such as a three-phase motor.
  • the intermediate portion 11 of the bus bar 1 is a portion made of a conductor that is formed to extend in the first direction and in which a folded portion 20 that forms a groove 21 along the second direction is formed. Furthermore, the intermediate portion 11 of the bus bar 1 has a structure in which a plurality of plate-like conductors 11A are overlapped.
  • the terminal part 12 is a part which consists of a conductor connected to both ends of the intermediate part 11 and is connected to other members.
  • the terminal portion 12 is formed with a terminal hole 12 ⁇ / b> A for being connected to a connection end at the front stage and the rear stage of the power transmission path by a fixing tool such as a bolt.
  • FIG. 2 is a side view of the bus bar 1 in the middle of being attached to the terminal block 9 at the front and rear stages of the power transmission path.
  • the stud bolt 91 provided on the terminal block 9 is passed through the terminal hole 12 ⁇ / b> A of the terminal portion 12 in the bus bar 1, and the nut 8 is attached to the stud bolt 91.
  • the terminal portion 12 is fixed to the terminal block 9 and is electrically connected to the terminal block 9.
  • the bus bar 1 Since the bus bar 1 has a flat cross section, the ratio of the surface area to the cross sectional area is large, and the heat dissipation is high.
  • a folded portion 20 is formed in the middle portion 11 of the bus bar 1 to form a groove 21 along the second direction intersecting the longitudinal direction.
  • the folded portion 20 of the bus bar 1 is easily elastically deformed so that the width of the groove 21 is expanded and contracted, the intermediate portion 11 of the bus bar 1 is easily elastically bent at the folded portion 20. . That is, even if the bus bar 1 is formed to be relatively short and thick, the folded portion 20 has flexibility to bend elastically in the thickness direction.
  • the bus bar 1 is formed so that the groove 21 of the folded portion 20 is located on the opposite side to the side where the terminal portion 12 is to be bent, that is, the groove 21 of the folded portion 20 is bent. It is desirable to be used so that it is located outside the part.
  • the intermediate portion 11 of the bus bar 1 has a structure in which a plurality of thin plate-like conductors 11A are overlapped. Therefore, the intermediate portion 11 of the bus bar 1 has flexibility in the thickness direction, that is, in the direction in which the plurality of plate-like conductors 11A are stacked, regardless of the presence or absence of the folded portion 20. Therefore, the intermediate portion 11 of the bus bar 1 has a very high bending performance and is elastically bent greatly due to the action of the folded portion 20 and the action of the multiple structure.
  • the terminal portion 12 in the laying operation of the bus bar 1, the terminal portion 12 can be positioned at a target position while the intermediate portion 11 is elastically bent.
  • the bus bar 1 is excellent in laying workability compared to a conventional bus bar that cannot be bent easily.
  • the bus bar 1 is particularly easy to bend at the folded portion 20. Therefore, when the force of the direction which bends it with respect to the bus-bar 1 is added, only the folding
  • terminal portions 12 at both ends of the bus bar 1 are portions connected to a plurality of plate-like conductors 11A that overlap in the intermediate portion 11, for example, a portion where a plurality of overlapped plate-like conductors are integrally welded, or an intermediate portion
  • the part 11 is configured as a part originally connected to each of the plurality of conductors of the part 11. Therefore, poor electrical connection is unlikely to occur in the terminal portion 12 of the bus bar 1.
  • the bus bar 1 is excellent in heat dissipation and laying workability even when the cross-sectional area is large for power lines, and prevents excessive heat generation due to poor electrical connection or the like. It has the characteristics that can be done.
  • the manufacturing method according to this example includes an overlapping process shown in FIG. 3A, a press-forming process shown in FIG. 3B, and a joining process not shown.
  • the superposition process is a process of superposing a plurality of thin members 110 made of a plate-like conductor thinner than the thickness of the bus bar 1.
  • the thin member 110 is a conductor member made of a metal such as copper, for example, and includes an intermediate portion 111 and terminal portions 112 at both ends.
  • the terminal portion 112 is formed with a through hole 112A.
  • the plurality of thin members 110 are formed with lengths that are slightly different in length in the first direction so that the positions of both ends are aligned after the folded portion 20 is formed.
  • the press molding process is a process of forming the folded portion 20 by pressing a part of the intermediate portion 111 of the plurality of thin-walled members 110 that are overlapped.
  • the intermediate portion 111 of the plurality of thin-walled members 110 overlaid is a first mold 41 in which a groove 411 that forms the outer surface of the folded portion 20 is formed, and the folded portion 20. Is sandwiched between the second mold 42 formed with the projection 421 for forming the groove 21. Thereby, the folding
  • the unillustrated joining step is a step of forming the terminal portion 12 by joining both ends of each of the superposed thin members 110 by welding or the like.
  • the plurality of thin-walled members 110 that are integrally connected by joining the terminal portions 112 at both ends become the bus bar 1.
  • a plurality of thin members 110 made of plate-like conductors thinner than the thickness thereof are overlapped, and the terminal portions 112 at both ends of each of the thin members 110 are joined.
  • the junction part in which the some terminal part 112 was joined in both ends, and the intermediate part 111 between the junction parts comprise the terminal part 12 and the intermediate part 11 in the bus bar 1, respectively.
  • the bus bar 1 manufactured by the manufacturing method according to the present example can be manufactured by a simple process in which a plurality of thin members 110 having a very simple structure are prepared and they are overlapped and subjected to joining processing such as press processing and welding. This is preferable in terms of points.
  • the terminal portion 12 formed by joining a plurality of stacked thin-walled members 110 by welding or the like has poor electrical connection compared to a crimp terminal attached to a bundle of a plurality of core wires. Hateful.
  • bus bar 1A according to a second embodiment of the present invention will be described with reference to FIG.
  • This bus bar 1A is different from the bus bar 1 shown in FIG. 1 only in that the intermediate portion does not have a multiple structure. 4, the same components as those shown in FIG. 1 are given the same reference numerals. Hereinafter, only the differences between the bus bar 1A and the bus bar 1 will be described.
  • the bus bar 1A is formed extending in the first direction, and an intermediate portion 13 made of a conductor formed with a folded portion 20 that forms a groove 21 along the second direction in a part thereof, and an intermediate portion 11 is a member made of a conductor formed of a conductor connected to both ends of the terminal 11 and a terminal portion 12 that is a portion connected to another member.
  • the intermediate portion 13 of the bus bar 1A does not have a multiple structure like the intermediate portion 11 of the bus bar 1. That is, the bus bar 1A has a structure in which the folded portion 20 is formed in a part of an intermediate region excluding a part of both ends of one plate-like conductor having the same thickness as the bus bar 1A.
  • bus bar 1A is formed in a flat shape like the bus bar 1, the ratio of the surface area to the cross-sectional area is large and the heat dissipation is high.
  • a folded portion 20 that forms a groove 21 along the second direction intersecting the longitudinal direction is formed in the intermediate portion 13 of the bus bar 1A. Therefore, even when the bus bar 1A is formed to be relatively short and thick, the folded portion 20 has flexibility to bend elastically in the thickness direction.
  • the bus bar 1A is particularly easily bent at the folded-back portion 20. Therefore, when the force of the direction which bends it with respect to 1 A of bus bars is added, only the folding
  • terminal portions 12 at both ends of the bus bar 1A are originally integral parts, unlike the case where the terminals are attached to a plurality of core wires, there is no electrical connection failure.
  • the bus bar 1A is excellent in heat dissipation and laying workability even when the cross-sectional area is large for a power line, and generates excessive heat due to poor electrical connection. It has characteristics that can be prevented.
  • the bus bars 1, 1 ⁇ / b> A have the folded portion 20 at one place of the intermediate portions 11, 13.
  • a plurality of folded portions 20 may be formed in the intermediate portions 11 and 13 of the bus bars 1 and 1A.
  • the folded portion 20 in the intermediate portion 11 of the bus bar 1 may be formed by other methods besides the case of being formed by bending the plurality of stacked thin members 110.
  • folded portions having slightly different groove depths and widths are formed in the intermediate portion 111 of each of the plurality of thin members 110.
  • the plurality of thin members 110 formed with the folded portions are overlapped, and then the terminal portions 112 at both ends of the overlapped thin members 110 are joined by welding or the like.
  • the bus bars 1 and 1A are used in a state where the intermediate portions 11 and 13 are covered with an insulating member.
  • the insulating member may be composed of an insulating elastic member made of, for example, rubber or an elastomer (elastic polymer) that is a rubber-based material. Elastomers include vulcanized rubbers such as natural rubber and synthetic rubber, urethane rubber, silicone rubber and fluoro rubber. In general, a thermosetting resin-based elastomer is used as a material for an insulating member made of elastomer. If the insulating member is a member made of an elastomer having excellent flexibility, the flexibility of the intermediate portions 11 and 13 of the bus bars 1 and 1A is not hindered.
  • the insulating member covering the intermediate portions 11 and 13 of the bus bars 1 and 1A is made of a resin such as polyamide (PA), polypropylene (PP), polybutylene terephthalate (PBT), ABS resin, or polyethylene (PE). Is also possible. It is also conceivable that the insulating member covering the intermediate portions 11 and 13 is a heat shrinkable tube.
  • PA polyamide
  • PP polypropylene
  • PBT polybutylene terephthalate
  • ABS resin polyethylene
  • PE polyethylene
  • the bus bars 1 and 1A may be used in a state where the intermediate portions 11 and 13 are covered with an insulating member, and the periphery of the insulating member is covered with a shield member such as a braided wire.
  • the bus bars 1 and 1A are covered with a shielding member such as a braided wire around the insulating member covering the intermediate portions 11 and 13, and the outside thereof is insulative such as a resin protective tube or tape having flexibility. It may be used in a state covered with the exterior member.
  • bus bars 1, 1 ⁇ / b> A may be used in a state in which their intermediate portions 11, 13 are covered and connected by an insulating member, arranged in parallel at intervals along one plane. Conceivable.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Insulated Conductors (AREA)

Abstract

The purpose of the present invention is to provide a bus bar that dissipates heat well and is easy to lay, even when using a power-line conductor with large cross-sectional area, and prevents excessive heating stemming from poor electrical connectivity. Said bus bar (1) has: a middle section (11) comprising a conductor that is formed so as to extend in a first direction, wherein a folded-over section (20) that forms a groove (21) running in a second direction that intersects the first direction is formed in one part of said conductor; and terminal sections (12) that comprise conductors extending from both ends of the middle section (11) in the first direction and are connected to other members. The middle section (11) preferably has a structure in which a plurality of plate conductors (11A) are laminated together.

Description

バスバーBus bar
　本発明は、曲げ性能に優れたバスバーに関する。 The present invention relates to a bus bar excellent in bending performance.
　電気自動車及びハイブリッド自動車などの電動車両においては、バッテリの高出力化に伴い、電力線に流れる電流が増大する傾向にある。そして、電力線が、大きな電流によって過剰に発熱することを防止するため、断面積が大きく、放熱性に優れた電力線の採用が必要となっている。 In electric vehicles such as electric vehicles and hybrid vehicles, the current flowing through the power line tends to increase as the output of the battery increases. In order to prevent the power line from excessively generating heat due to a large current, it is necessary to employ a power line having a large cross-sectional area and excellent heat dissipation.
　例えば、特許文献１には、並列に配置された複数の丸電線と、それら丸電線の周囲を覆う扁平な筒状のコルゲートチューブとを備えたワイヤハーネスが示されている。複数の電線が並列に配置された場合、複数の電線が縦方向及び横方向に積み重なる状態で束ねられる場合に比べ、電線束全体の輪郭を形成する部分の表面積が大きくなり、電線束全体の放熱性が高まる。 For example, Patent Document 1 discloses a wire harness including a plurality of round electric wires arranged in parallel and a flat cylindrical corrugated tube covering the periphery of the round electric wires. When multiple wires are arranged in parallel, the surface area of the part that forms the contour of the entire wire bundle becomes larger than when the multiple wires are bundled in a state of being stacked vertically and horizontally, and heat dissipation of the entire wire bundle is achieved. Increases nature.
　一方、車両に搭載される電力線として板状の導電体からなるバスバーが採用されることも多い。バスバーは、扁平な形状であるため、同じ断面積の丸形状の芯線を有する丸電線に比べ、導体部分の表面積が大きく、放熱性が高い。 On the other hand, a bus bar made of a plate-like conductor is often adopted as a power line mounted on a vehicle. Since the bus bar has a flat shape, the conductor portion has a larger surface area and higher heat dissipation than a round electric wire having a round core wire having the same cross-sectional area.
特開２０１０－４７０３３号公報JP 2010-47033 A
　ところで、特許文献１に示されるように、電力線が、並列に配置された複数の被覆電線からなる電線束により構成される場合、複数の被覆電線各々における芯線の端部を結束しつつ電気的に接続する端子が、電線束の両端に取り付けられる。 By the way, as shown in Patent Document 1, when the power line is constituted by a bundle of wires made up of a plurality of covered wires arranged in parallel, the ends of the core wires in each of the plurality of covered wires are bound together electrically. Terminals to be connected are attached to both ends of the wire bundle.
　しかしながら、バラバラに構成された複数本の電線は、それらの端部における芯線相互間において隙間が生じやすい。そのため、電線束の端部の芯線部分に端子が取り付けられた場合、一部の芯線が、端子に対して電気的に十分に接続されず、各電線の芯線と端子との接続不良が生じやすい。各電線の芯線と端子との接続不良は、電線の過剰な発熱の原因となる。 However, in the plurality of electric wires configured in pieces, gaps are easily generated between the core wires at their end portions. Therefore, when a terminal is attached to the core wire portion at the end of the wire bundle, some of the core wires are not sufficiently electrically connected to the terminal, and poor connection between the core wire of each wire and the terminal is likely to occur. . The poor connection between the core wire and the terminal of each electric wire causes excessive heat generation of the electric wire.
　一方、１つの電力線が、１本の被覆電線又は１本のバスバーで構成される場合、そのような電力線は、硬いために曲げることが難しく、敷設の作業性に劣るという問題点を有している。特に、１本の被覆電線又は１本のバスバーからなる電力線は、その長さが短いほど、曲げにくさの問題がより顕著となる。 On the other hand, when one power line is composed of one covered electric wire or one bus bar, such a power line is difficult to bend because it is hard, and has a problem that it is inferior in laying workability. Yes. In particular, the problem of difficulty in bending becomes more conspicuous as the length of a power line including one covered wire or one bus bar is shorter.
　本発明は、電力線用として導体の断面積が大きく形成された場合でも、放熱性及び敷設の作業性に優れ、かつ、電気的な接続不良などに起因する過剰な発熱を防止できるバスバーの提供を目的とする。 The present invention provides a bus bar that is excellent in heat dissipation and laying workability even when a conductor has a large cross-sectional area for power lines, and that can prevent excessive heat generation due to poor electrical connection or the like. Objective.
　本発明に係るバスバーは、以下に示す各構成要素を備える。
（１）第１の構成要素は、第一の方向に延びて形成され、一部に第一の方向に交差する第二の方向に沿う溝を形成する折返し部が形成された導体からなる部分である中間部である。
（２）第２の構成要素は、中間部の第一の方向における両側に連なる導体からなり他の部材と連結される部分である端子部である。 The bus bar according to the present invention includes the following components.
(1) The first component is a portion formed of a conductor that is formed extending in the first direction and in which a folded portion that forms a groove along the second direction that intersects the first direction is formed in part. Is an intermediate part.
(2) A 2nd component is a terminal part which is a part which consists of a conductor connected on both sides in the 1st direction of an intermediate part, and is connected with another member.
　また、本発明に係るバスバーにおいて、中間部が、複数の板状の導体が重なった構造を有すれば好適である。なお、本明細書において、板状の導体という用語は、例えば厚みが０．１ミリメートル程度の導体などの他、それよりも格段に薄い箔状の導体をも含む用語として用いられている。 In the bus bar according to the present invention, it is preferable that the intermediate portion has a structure in which a plurality of plate-like conductors are overlapped. In the present specification, the term “plate-like conductor” is used as a term including, for example, a conductor having a thickness of about 0.1 millimeter and a foil-like conductor that is much thinner than that.
　バスバーは、扁平に形成されることにより、断面積に対する表面積の比が大きくなり、放熱性が高まる。さらに、本発明に係るバスバーにおいて、バスバーの中間部には、その長手方向に交差する方向に沿う溝を形成する折返し部が形成されている。この折返し部は、溝の幅が伸縮するように弾性的に変形しやすいため、バスバーの中間部は、折返し部において弾性的に曲がりやすい。即ち、本発明に係るバスバーは、比較的短くかつ太く形成された場合であっても、折返し部において、その厚みの方向に弾性的に曲がる可撓性を有する。 When the bus bar is formed flat, the ratio of the surface area to the cross-sectional area is increased, and the heat dissipation is increased. Furthermore, the bus bar which concerns on this invention WHEREIN: The folding | returning part which forms the groove | channel along the direction which cross | intersects the longitudinal direction is formed in the intermediate part of the bus bar. Since the folded portion is easily elastically deformed so that the width of the groove expands and contracts, the intermediate portion of the bus bar is easily bent elastically at the folded portion. That is, even when the bus bar according to the present invention is formed to be relatively short and thick, the bus bar has flexibility to bend elastically in the direction of its thickness at the folded portion.
　さらに、本発明に係るバスバーは、折返し部の部分において特に曲がりやすい。そのため、本発明に係るバスバーに対してそれを曲げる方向の力が加わった場合、折返し部のみが弾性的に曲がり、その他の部位は曲がらない。その結果、本発明に係るバスバーに力が加わった場合に、折返し部以外の平坦な部位に曲げ跡が残ることが防止される。なお、曲げ跡は、曲がった後に元の形状に戻らない部位を意味する。 Furthermore, the bus bar according to the present invention is particularly easily bent at the folded portion. Therefore, when the force of the direction which bends it with respect to the bus-bar which concerns on this invention is added, only a folding | returning part will bend elastically and other parts will not bend. As a result, when a force is applied to the bus bar according to the present invention, it is possible to prevent bending marks from remaining on a flat portion other than the folded portion. In addition, a bending trace means the site | part which does not return to an original shape after bending.
　また、バスバーの両端の端子部は、中間部に連なる部分であるため、バスバーの端子部において、電気的な接続不良は生じにくい。 Also, since the terminal portions at both ends of the bus bar are portions that are connected to the middle portion, poor electrical connection is unlikely to occur at the terminal portions of the bus bar.
　従って、本発明に係るバスバーは、電力線用として導体の断面積が大きく形成された場合でも、放熱性及び敷設の作業性に優れ、かつ、電気的な接続不良などに起因する過剰な発熱を防止できる。 Therefore, the bus bar according to the present invention has excellent heat dissipation and laying workability even when the conductor has a large cross-sectional area for power lines, and prevents excessive heat generation due to poor electrical connection or the like. it can.
　また、本発明に係るバスバーにおいて、中間部が、複数の薄い板状の導体が重なった多重構造を有する場合、中間部自体が、その厚みの方向、即ち、複数の板状の導体が積み重なる方向において可撓性を有する。そのため、本発明に係るバスバーにおいて、中間部が多重構造を有する場合、中間部は、折返し部の作用及び多重構造の作用により、曲げ性能がより高まる。 Further, in the bus bar according to the present invention, when the intermediate portion has a multiple structure in which a plurality of thin plate-like conductors overlap, the intermediate portion itself has a thickness direction, that is, a direction in which the plurality of plate-like conductors are stacked. It has flexibility. Therefore, in the bus bar according to the present invention, when the intermediate portion has a multiple structure, the bending performance of the intermediate portion is further enhanced by the action of the folded portion and the action of the multiple structure.
本発明の第１実施形態に係るバスバー１の斜視図である。It is a perspective view of bus bar 1 concerning a 1st embodiment of the present invention. 端子台に取り付けられる途中のバスバー１の側面図である。It is a side view of the bus bar 1 in the middle of being attached to a terminal block. バスバー１の製造方法の例を示す図である。It is a figure which shows the example of the manufacturing method of the bus bar. 本発明の第２実施形態に係るバスバー１Ａの斜視図である。It is a perspective view of 1 A of bus bars which concern on 2nd Embodiment of this invention.
　以下、添付の図面を参照しながら、本発明の実施形態について説明する。以下の実施形態は、本発明を具体化した一例であり、本発明の技術的範囲を限定する事例ではない。本発明の実施形態に係るバスバー１は、例えば、電動車両におけるインバータ回路とモータもしくは発電機とを接続する電力線として、或いはバッテリとインバータ回路とを接続する電力線として用いられる。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention. The bus bar 1 according to the embodiment of the present invention is used, for example, as a power line that connects an inverter circuit and a motor or a generator in an electric vehicle, or as a power line that connects a battery and an inverter circuit.
　＜第１実施形態＞
　まず、図１及び図２を参照しつつ、本発明の第１実施形態に係るバスバー１の構成について説明する。バスバー１は、例えば銅などの金属からなる導体の部材であり、図１に示されるように、一の方向に延びて形成されている。以下の説明において、バスバー１の長手方向を第一方向、バスバー１の幅方向、即ち、第一方向に直交する方向を第二方向と称する。なお、図１から図４において、第一方向は左右の方向である。 <First Embodiment>
First, the configuration of the bus bar 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The bus bar 1 is a conductor member made of metal such as copper, for example, and is formed to extend in one direction as shown in FIG. In the following description, the longitudinal direction of the bus bar 1 is referred to as a first direction, and the width direction of the bus bar 1, that is, a direction orthogonal to the first direction is referred to as a second direction. 1 to 4, the first direction is the left-right direction.
　図１に示されるように、バスバー１は、中間部１１及び両端の端子部１２から構成されている。バスバー１は、例えば３相モータなどの電動機の各相への電力の伝送経路の一部として敷設される。 As shown in FIG. 1, the bus bar 1 includes an intermediate portion 11 and terminal portions 12 at both ends. The bus bar 1 is laid as a part of a power transmission path to each phase of an electric motor such as a three-phase motor.
　バスバー１の中間部１１は、第一方向に延びて形成され、その一部に第二方向に沿う溝２１を形成する折返し部２０が形成された導体からなる部分である。さらに、バスバー１の中間部１１は、複数の板状の導体１１Ａが重なった構造を有する。 The intermediate portion 11 of the bus bar 1 is a portion made of a conductor that is formed to extend in the first direction and in which a folded portion 20 that forms a groove 21 along the second direction is formed. Furthermore, the intermediate portion 11 of the bus bar 1 has a structure in which a plurality of plate-like conductors 11A are overlapped.
　一方、端子部１２は、中間部１１の両端に連なる導体からなり、他の部材と連結される部分である。端子部１２には、電力の伝送経路の前段及び後段の接続端に対してボルトなどの固定具によって連結されるための端子孔１２Ａが形成されている。 On the other hand, the terminal part 12 is a part which consists of a conductor connected to both ends of the intermediate part 11 and is connected to other members. The terminal portion 12 is formed with a terminal hole 12 </ b> A for being connected to a connection end at the front stage and the rear stage of the power transmission path by a fixing tool such as a bolt.
　図２は、電力の伝送経路の前段及び後段の端子台９に取り付けられる途中のバスバー１の側面図である。図２に示される例では、端子台９に設けられたスタッドボルト９１が、バスバー１における端子部１２の端子孔１２Ａに通され、さらに、ナット８がスタッドボルト９１に装着される。これにより、端子部１２は、端子台９に対して固定されるとともに、端子台９に対して電気的に接続される。 FIG. 2 is a side view of the bus bar 1 in the middle of being attached to the terminal block 9 at the front and rear stages of the power transmission path. In the example shown in FIG. 2, the stud bolt 91 provided on the terminal block 9 is passed through the terminal hole 12 </ b> A of the terminal portion 12 in the bus bar 1, and the nut 8 is attached to the stud bolt 91. Thereby, the terminal portion 12 is fixed to the terminal block 9 and is electrically connected to the terminal block 9.
　バスバー１は、断面が扁平な形状に形成されているため、断面積に対する表面積の比が大きく、放熱性が高い。 Since the bus bar 1 has a flat cross section, the ratio of the surface area to the cross sectional area is large, and the heat dissipation is high.
　また、バスバー１の中間部１１には、その長手方向に交差する第二方向に沿う溝２１を形成する折返し部２０が形成されている。図２に示されるように、バスバー１の折返し部２０は、溝２１の幅が伸縮するように弾性的に変形しやすいため、バスバー１の中間部１１は、折返し部２０において弾性的に曲がりやすい。即ち、バスバー１は、比較的短くかつ太く形成された場合であっても、折返し部２０において、その厚みの方向に弾性的に曲がる可撓性を有する。 Further, a folded portion 20 is formed in the middle portion 11 of the bus bar 1 to form a groove 21 along the second direction intersecting the longitudinal direction. As shown in FIG. 2, since the folded portion 20 of the bus bar 1 is easily elastically deformed so that the width of the groove 21 is expanded and contracted, the intermediate portion 11 of the bus bar 1 is easily elastically bent at the folded portion 20. . That is, even if the bus bar 1 is formed to be relatively short and thick, the folded portion 20 has flexibility to bend elastically in the thickness direction.
　なお、図２に示されるように、バスバー１は、折返し部２０の溝２１が、端子部１２を曲げたい側に対して反対側に位置するように、即ち、折返し部２０の溝２１が曲げ部分の外側に位置するように使用されることが望ましい。 As shown in FIG. 2, the bus bar 1 is formed so that the groove 21 of the folded portion 20 is located on the opposite side to the side where the terminal portion 12 is to be bent, that is, the groove 21 of the folded portion 20 is bent. It is desirable to be used so that it is located outside the part.
　さらに、バスバー１の中間部１１は、複数の薄い板状の導体１１Ａが重なった構造を有する。そのため、バスバー１の中間部１１は、折返し部２０の有無によらず、その厚みの方向、即ち、複数の板状の導体１１Ａが積み重なる方向において可撓性を有する。そのため、バスバー１の中間部１１は、折返し部２０の作用及び多重構造の作用により、曲げ性能が極めて高く、弾性的に大きく曲がる。 Furthermore, the intermediate portion 11 of the bus bar 1 has a structure in which a plurality of thin plate-like conductors 11A are overlapped. Therefore, the intermediate portion 11 of the bus bar 1 has flexibility in the thickness direction, that is, in the direction in which the plurality of plate-like conductors 11A are stacked, regardless of the presence or absence of the folded portion 20. Therefore, the intermediate portion 11 of the bus bar 1 has a very high bending performance and is elastically bent greatly due to the action of the folded portion 20 and the action of the multiple structure.
　従って、図２に示されるように、バスバー１の敷設作業において、中間部１１を弾性的に曲げつつ、端子部１２を目的の位置に位置決めすることが可能である。その結果、バスバー１は、容易に曲げることができない従来のバスバーに比べ、敷設の作業性に優れている。 Therefore, as shown in FIG. 2, in the laying operation of the bus bar 1, the terminal portion 12 can be positioned at a target position while the intermediate portion 11 is elastically bent. As a result, the bus bar 1 is excellent in laying workability compared to a conventional bus bar that cannot be bent easily.
　また、バスバー１は、折返し部２０の部分において特に曲がりやすい。そのため、バスバー１に対してそれを曲げる方向の力が加わった場合、折返し部２０のみが弾性的に曲がり、その他の部位は曲がらない。その結果、バスバー１に力が加わった場合に、折返し部２０以外の平坦な部位に曲げ跡が残ることが防止される。 Also, the bus bar 1 is particularly easy to bend at the folded portion 20. Therefore, when the force of the direction which bends it with respect to the bus-bar 1 is added, only the folding | turning part 20 will bend elastically, and other parts will not bend. As a result, when a force is applied to the bus bar 1, it is possible to prevent a trace of bending from remaining on a flat portion other than the folded portion 20.
　また、バスバー１の両端の端子部１２は、中間部１１において重なる複数の板状の導体１１Ａに連なる部分であり、例えば、重なった複数の板状の導体が一体に溶接された部分、もしくは中間部１１の複数の導体各々に元々連なっている部分、などとして構成される。そのため、バスバー１の端子部１２において、電気的な接続不良は生じにくい。 Further, the terminal portions 12 at both ends of the bus bar 1 are portions connected to a plurality of plate-like conductors 11A that overlap in the intermediate portion 11, for example, a portion where a plurality of overlapped plate-like conductors are integrally welded, or an intermediate portion The part 11 is configured as a part originally connected to each of the plurality of conductors of the part 11. Therefore, poor electrical connection is unlikely to occur in the terminal portion 12 of the bus bar 1.
　以上に示されるように、バスバー１は、電力線用として断面積が大きく形成された場合でも、放熱性及び敷設の作業性に優れ、かつ、電気的な接続不良などに起因する過剰な発熱を防止できる特性を有している。 As shown above, the bus bar 1 is excellent in heat dissipation and laying workability even when the cross-sectional area is large for power lines, and prevents excessive heat generation due to poor electrical connection or the like. It has the characteristics that can be done.
　＜バスバー１の製造方法の例＞
　次に、図３を参照しつつ、バスバー１の製造方法の一例について説明する。本例に係る製造方法は、図３（ａ）に示される重ね合わせ工程と、図３（ｂ）に示されるプレス成形工程と、図示されていない接合工程とを含む。 <Example of manufacturing method of bus bar 1>
Next, an example of a method for manufacturing the bus bar 1 will be described with reference to FIG. The manufacturing method according to this example includes an overlapping process shown in FIG. 3A, a press-forming process shown in FIG. 3B, and a joining process not shown.
　重ね合わせ工程は、バスバー１の厚みよりも薄い板状の導体からなる複数の薄肉部材１１０を重ね合わせる工程である。薄肉部材１１０は、例えば銅などの金属からなる導体の部材であり、中間部１１１及び両端の端子部１１２から構成されている。端子部１１２には、貫通孔１１２Ａが形成されている。 The superposition process is a process of superposing a plurality of thin members 110 made of a plate-like conductor thinner than the thickness of the bus bar 1. The thin member 110 is a conductor member made of a metal such as copper, for example, and includes an intermediate portion 111 and terminal portions 112 at both ends. The terminal portion 112 is formed with a through hole 112A.
　また、複数の薄肉部材１１０は、重ねられた状態で折返し部２０の成形が行われた場合、折返しの深さが少しずつ異なる。そのため、複数の薄肉部材１１０は、折返し部２０の成形が行われた後に両端の位置が揃うように、第一方向の長さが少しずつ異なる長さで形成されている。 Further, when the folded portion 20 is formed in a state where the plurality of thin-walled members 110 are stacked, the depth of the folding is slightly different. Therefore, the plurality of thin members 110 are formed with lengths that are slightly different in length in the first direction so that the positions of both ends are aligned after the folded portion 20 is formed.
　また、プレス成形工程は、重ね合わされた複数の薄肉部材１１０の中間部１１１の一部に対するプレス加工により、折返し部２０を形作る工程である。図３（ｂ）に示される例では、重ね合わされた複数の薄肉部材１１０の中間部１１１が、折返し部２０の外側面を成形する溝４１１が形成された第一金型４１と、折返し部２０の溝２１を成形する突起部４２１が形成された第二金型４２との間に挟み込まれる。これにより、重ね合わされた複数の薄肉部材１１０の中間部１１１の一部に、折返し部２０が形成される。 In addition, the press molding process is a process of forming the folded portion 20 by pressing a part of the intermediate portion 111 of the plurality of thin-walled members 110 that are overlapped. In the example shown in FIG. 3 (b), the intermediate portion 111 of the plurality of thin-walled members 110 overlaid is a first mold 41 in which a groove 411 that forms the outer surface of the folded portion 20 is formed, and the folded portion 20. Is sandwiched between the second mold 42 formed with the projection 421 for forming the groove 21. Thereby, the folding | returning part 20 is formed in a part of intermediate part 111 of the several thin member 110 overlapped.
　また、不図示の接合工程は、重ね合わされた複数の薄肉部材１１０各々の両端部を、溶接などにより接合して端子部１２を形成する工程である。各々の両端の端子部１１２が接合されることにより一体に連結された複数の薄肉部材１１０は、バスバー１となる。 In addition, the unillustrated joining step is a step of forming the terminal portion 12 by joining both ends of each of the superposed thin members 110 by welding or the like. The plurality of thin-walled members 110 that are integrally connected by joining the terminal portions 112 at both ends become the bus bar 1.
　即ち、本例に係る製造方法により製造されたバスバー１は、その厚みよりも薄い板状の導体からなる複数の薄肉部材１１０が重ね合わされ、さらに薄肉部材１１０各々の両端の端子部１１２が接合された構造を有する。そして、両端において複数の端子部１１２が接合された接合部とその接合部の間の中間部１１１とが、それぞれバスバー１における端子部１２と中間部１１とを構成する。 That is, in the bus bar 1 manufactured by the manufacturing method according to this example, a plurality of thin members 110 made of plate-like conductors thinner than the thickness thereof are overlapped, and the terminal portions 112 at both ends of each of the thin members 110 are joined. Has a structure. And the junction part in which the some terminal part 112 was joined in both ends, and the intermediate part 111 between the junction parts comprise the terminal part 12 and the intermediate part 11 in the bus bar 1, respectively.
　本例に係る製造方法により製造されたバスバー１は、ごく単純な構造の複数の薄肉部材１１０を用意し、それらを重ね合わせてプレス加工及び溶接などの接合加工を施すという簡易な工程により製造できる点で好適である。また、重ねられた複数の薄肉部材１１０が溶接などにより接合されることによって形成された端子部１２は、複数の芯線の束に対して取り付けられる圧着端子などに比べ、電気的な接続不良は生じにくい。 The bus bar 1 manufactured by the manufacturing method according to the present example can be manufactured by a simple process in which a plurality of thin members 110 having a very simple structure are prepared and they are overlapped and subjected to joining processing such as press processing and welding. This is preferable in terms of points. In addition, the terminal portion 12 formed by joining a plurality of stacked thin-walled members 110 by welding or the like has poor electrical connection compared to a crimp terminal attached to a bundle of a plurality of core wires. Hateful.
　＜第２実施形態＞
　次に、図４を参照しつつ、本発明の第２実施形態に係るバスバー１Ａについて説明する。このバスバー１Ａは、図１に示されたバスバー１と比較して、中間部が多重構造を有していない点のみが異なる。図４において、図１に示される構成要素と同じ構成要素は、同じ参照符号が付されている。以下、バスバー１Ａにおけるバスバー１と異なる点についてのみ説明する。 Second Embodiment
Next, a bus bar 1A according to a second embodiment of the present invention will be described with reference to FIG. This bus bar 1A is different from the bus bar 1 shown in FIG. 1 only in that the intermediate portion does not have a multiple structure. 4, the same components as those shown in FIG. 1 are given the same reference numerals. Hereinafter, only the differences between the bus bar 1A and the bus bar 1 will be described.
　バスバー１Ａは、バスバー１と同様に、第一方向に延びて形成され、その一部に第二方向に沿う溝２１を形成する折返し部２０が形成された導体からなる中間部１３と、中間部１１の両端に連なる導体からなり、他の部材と連結される部分である端子部１２とが形成された導体からなる部材である。 The bus bar 1A, like the bus bar 1, is formed extending in the first direction, and an intermediate portion 13 made of a conductor formed with a folded portion 20 that forms a groove 21 along the second direction in a part thereof, and an intermediate portion 11 is a member made of a conductor formed of a conductor connected to both ends of the terminal 11 and a terminal portion 12 that is a portion connected to another member.
　しかしながら、バスバー１Ａの中間部１３は、バスバー１の中間部１１のような多重構造を有さない。即ち、バスバー１Ａは、バスバー１Ａの厚みと同一の厚みの１枚の板状の導体における両端の一部の領域を除く中間領域の一部に、折返し部２０が形成された構造を有する。 However, the intermediate portion 13 of the bus bar 1A does not have a multiple structure like the intermediate portion 11 of the bus bar 1. That is, the bus bar 1A has a structure in which the folded portion 20 is formed in a part of an intermediate region excluding a part of both ends of one plate-like conductor having the same thickness as the bus bar 1A.
　バスバー１Ａは、バスバー１と同様に、断面が扁平な形状に形成されているため、断面積に対する表面積の比が大きく、放熱性が高い。 Since the bus bar 1A is formed in a flat shape like the bus bar 1, the ratio of the surface area to the cross-sectional area is large and the heat dissipation is high.
　また、バスバー１Aの中間部１３には、その長手方向に交差する第二方向に沿う溝２１を形成する折返し部２０が形成されている。そのため、バスバー１Ａは、比較的短くかつ太く形成された場合であっても、折返し部２０において、その厚みの方向に弾性的に曲がる可撓性を有する。 Further, a folded portion 20 that forms a groove 21 along the second direction intersecting the longitudinal direction is formed in the intermediate portion 13 of the bus bar 1A. Therefore, even when the bus bar 1A is formed to be relatively short and thick, the folded portion 20 has flexibility to bend elastically in the thickness direction.
　また、バスバー１Ａは、折返し部２０の部分において特に曲がりやすい。そのため、バスバー１Ａに対してそれを曲げる方向の力が加わった場合、折返し部２０のみが弾性的に曲がり、その他の部位は曲がらない。その結果、バスバー１Ａに力が加わった場合に、折返し部２０以外の平坦な部位に曲げ跡が残ることが防止される。 Also, the bus bar 1A is particularly easily bent at the folded-back portion 20. Therefore, when the force of the direction which bends it with respect to 1 A of bus bars is added, only the folding | turning part 20 will bend elastically and other parts will not bend. As a result, when a force is applied to the bus bar 1 </ b> A, it is possible to prevent a bend mark from remaining on a flat portion other than the folded portion 20.
　また、バスバー１Ａの両端の端子部１２は、元々一体の部分であるため、端子が複数の芯線に取り付けられる場合とは異なり、電気的な接続不良は生じない。 Also, since the terminal portions 12 at both ends of the bus bar 1A are originally integral parts, unlike the case where the terminals are attached to a plurality of core wires, there is no electrical connection failure.
　従って、バスバー１Ａは、バスバー１と同様に、電力線用として断面積が大きく形成された場合でも、放熱性及び敷設の作業性に優れ、かつ、電気的な接続不良などに起因する過剰な発熱を防止できる特性を有している。 Therefore, the bus bar 1A, like the bus bar 1, is excellent in heat dissipation and laying workability even when the cross-sectional area is large for a power line, and generates excessive heat due to poor electrical connection. It has characteristics that can be prevented.
　＜その他＞
　以上に示された実施形態において、バスバー１，１Ａは、その中間部１１，１３の一箇所に折返し部２０を有する。しかしながら、バスバー１，１Ａの中間部１１，１３に、複数の折返し部２０が形成されることも考えられる。 <Others>
In the embodiment shown above, the bus bars 1, 1 </ b> A have the folded portion 20 at one place of the intermediate portions 11, 13. However, a plurality of folded portions 20 may be formed in the intermediate portions 11 and 13 of the bus bars 1 and 1A.
　また、バスバー１の中間部１１における折返し部２０は、重ね合わされた複数の薄肉部材１１０に対する曲げ加工により形成される場合の他、他の方法で形成されることも考えられる。例えば、複数の薄肉部材１１０各々の中間部１１１に対し、少しずつ溝の深さ及び幅が異なる折返し部が形成されることも考えられる。この場合、折返し部が形成された複数の薄肉部材１１０が重ね合わされ、その後、重ね合わされた複数の薄肉部材１１０の両端の端子部１１２が、溶接などによって接合される。 Further, the folded portion 20 in the intermediate portion 11 of the bus bar 1 may be formed by other methods besides the case of being formed by bending the plurality of stacked thin members 110. For example, it is also conceivable that folded portions having slightly different groove depths and widths are formed in the intermediate portion 111 of each of the plurality of thin members 110. In this case, the plurality of thin members 110 formed with the folded portions are overlapped, and then the terminal portions 112 at both ends of the overlapped thin members 110 are joined by welding or the like.
　また、バスバー１，１Ａは、その中間部１１，１３が絶縁部材で覆われた状態で使用されることも考えられる。絶縁部材は、例えば、ゴムもしくはゴム系材料であるエラストマー(elastic polymer)からなる絶縁性の弾性部材で構成されることが考えられる。エラストマーには、天然ゴム及び合成ゴムなどの加硫ゴム、並びにウレタンゴム、シリコーンゴム及びフッ素ゴムなどが含まれる。一般的には、熱硬化性樹脂系エラストマーが、エラストマー製の絶縁部材の材料として用いられる。絶縁部材が、可撓性に優れたエラストマーからなる部材であれば、バスバー１，１Ａの中間部１１，１３の可撓性が阻害されず好適である。 Also, it is conceivable that the bus bars 1 and 1A are used in a state where the intermediate portions 11 and 13 are covered with an insulating member. The insulating member may be composed of an insulating elastic member made of, for example, rubber or an elastomer (elastic polymer) that is a rubber-based material. Elastomers include vulcanized rubbers such as natural rubber and synthetic rubber, urethane rubber, silicone rubber and fluoro rubber. In general, a thermosetting resin-based elastomer is used as a material for an insulating member made of elastomer. If the insulating member is a member made of an elastomer having excellent flexibility, the flexibility of the intermediate portions 11 and 13 of the bus bars 1 and 1A is not hindered.
　また、バスバー１，１Ａの中間部１１，１３を覆う絶縁部材が、ポリアミド（ＰＡ）、ポリプロピレン（ＰＰ）、ポリブチレンテレフタレート（ＰＢＴ）、ＡＢＳ樹脂又はポリエチレン（ＰＥ）などの樹脂で構成されることも考えられる。また、中間部１１，１３を覆う絶縁部材が、熱収縮チューブであることも考えられる。 The insulating member covering the intermediate portions 11 and 13 of the bus bars 1 and 1A is made of a resin such as polyamide (PA), polypropylene (PP), polybutylene terephthalate (PBT), ABS resin, or polyethylene (PE). Is also possible. It is also conceivable that the insulating member covering the intermediate portions 11 and 13 is a heat shrinkable tube.
　また、バスバー１，１Ａは、その中間部１１，１３が絶縁部材で覆われ、さらに、その絶縁部材の周囲が編組線などのシールド部材で覆われた状態で使用されることも考えられる。また、バスバー１，１Ａは、中間部１１，１３を覆う絶縁部材の周囲が編組線などのシールド部材で覆われ、さらにその外側が可撓性を有する樹脂製の保護チューブ又はテープなどの絶縁性の外装部材で覆われた状態で使用されることも考えられる。 Also, the bus bars 1 and 1A may be used in a state where the intermediate portions 11 and 13 are covered with an insulating member, and the periphery of the insulating member is covered with a shield member such as a braided wire. In addition, the bus bars 1 and 1A are covered with a shielding member such as a braided wire around the insulating member covering the intermediate portions 11 and 13, and the outside thereof is insulative such as a resin protective tube or tape having flexibility. It may be used in a state covered with the exterior member.
　また、複数のバスバー１，１Ａが、一の平面に沿って間隔を空けて並列配置された、それらの中間部１１，１３が絶縁部材により覆われるとともに連結された状態で、使用されることも考えられる。 Also, a plurality of bus bars 1, 1 </ b> A may be used in a state in which their intermediate portions 11, 13 are covered and connected by an insulating member, arranged in parallel at intervals along one plane. Conceivable.
　１，１Ａ　バスバー
　８　ナット
　９　端子台
　１１，１３　バスバーの中間部
　１１Ａ　板状の導体
　１２　バスバーの端子部
　１２Ａ　端子孔
　２０　折返し部
　２１　折返し部の溝
　４１　第一金型
　４２　第二金型
　９１　スタッドボルト
　１１０　薄肉部材
　１１１　薄肉部材の中間部
　１１２　薄肉部材の端子部
　１１２Ａ　貫通孔
　４１１　第一金型の溝
　４２１　第二金型の突起部 DESCRIPTION OF SYMBOLS 1,1A Bus bar 8 Nut 9 Terminal block 11,13 Intermediate part of bus bar 11A Plate-shaped conductor 12 Bus bar terminal part 12A Terminal hole 20 Folded part 21 Folded part groove 41 First mold 42 Second mold 91 Stud bolt DESCRIPTION OF SYMBOLS 110 Thin member 111 Middle part of thin member 112 Terminal part of thin member 112A Through-hole 411 Groove of first mold 421 Projection part of second mold

Claims (2)

  1. 　第一の方向に延びて形成され、一部に前記第一の方向に交差する第二の方向に沿う溝（２１）を形成する折返し部（２０）が形成された導体からなる部分である中間部（１１）と、
    　前記中間部（１１）の前記第一の方向における両側に連なる導体からなり他の部材と連結される部分である端子部（１２）と、が形成されていることを特徴とするバスバー（１）。     An intermediate portion formed by a conductor formed with a folded portion (20) formed in a first direction and partially formed with a groove (21) along a second direction intersecting the first direction. Part (11),
    A bus bar (1), characterized in that a terminal portion (12), which is a portion made of a conductor continuous on both sides in the first direction of the intermediate portion (11) and connected to another member, is formed. .
  2. 　前記中間部（１１）は、複数の板状の導体（１１Ａ）が重なった構造を有する、請求項１に記載のバスバー。 The bus bar according to claim 1, wherein the intermediate part (11) has a structure in which a plurality of plate-like conductors (11A) are overlapped.
PCT/JP2012/054852 2011-03-02 2012-02-28 Bus bar WO2012118047A1 (en)

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CN112636032A (en) * 2019-09-24 2021-04-09 泰连德国有限公司 Electrical connection arrangement comprising a busbar with a conductor arrangement, and clamping element
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CN112636032A (en) * 2019-09-24 2021-04-09 泰连德国有限公司 Electrical connection arrangement comprising a busbar with a conductor arrangement, and clamping element

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