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JP7794776B2 - Busbar Module - Google Patents
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JP7794776B2 - Busbar Module - Google Patents

Busbar Module

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Publication number
JP7794776B2
JP7794776B2 JP2023067045A JP2023067045A JP7794776B2 JP 7794776 B2 JP7794776 B2 JP 7794776B2 JP 2023067045 A JP2023067045 A JP 2023067045A JP 2023067045 A JP2023067045 A JP 2023067045A JP 7794776 B2 JP7794776 B2 JP 7794776B2
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JP
Japan
Prior art keywords
main body
busbar
body portion
extension
extending
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
JP2023067045A
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Japanese (ja)
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JP2024153263A (en
Inventor
達也 雄鹿
弘訓 小池
良樹 青嶋
公利 牧野
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Yazaki Corp
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Yazaki Corp
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Publication date
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Priority to JP2023067045A priority Critical patent/JP7794776B2/en
Priority to DE102024110459.7A priority patent/DE102024110459A1/en
Priority to CN202410455002.3A priority patent/CN118825565A/en
Publication of JP2024153263A publication Critical patent/JP2024153263A/en
Application granted granted Critical
Publication of JP7794776B2 publication Critical patent/JP7794776B2/en
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/0207—Wire harnesses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • 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
    • H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
    • 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
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • H01R11/281—End pieces consisting of a ferrule or sleeve for connections to batteries
    • H01R11/288—Interconnections between batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0277—Bendability or stretchability details
    • H05K1/028—Bending or folding regions of flexible printed circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/11—Printed elements for providing electric connections to or between printed circuits
    • H05K1/118—Printed elements for providing electric connections to or between printed circuits specially for flexible printed circuits, e.g. using folded portions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of flexible or folded printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
    • 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
    • H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0263—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
    • H05K1/0265—High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board characterized by the lay-out of or details of the printed conductors, e.g. reinforced conductors, redundant conductors, conductors having different cross-sections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/05—Flexible printed circuits [FPCs]
    • H05K2201/052—Branched
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/05—Flexible printed circuits [FPCs]
    • H05K2201/053—Tails
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/05—Flexible printed circuits [FPCs]
    • H05K2201/055—Folded back on itself
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10037—Printed or non-printed battery
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10189—Non-printed connector
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10227—Other objects, e.g. metallic pieces
    • H05K2201/10272—Busbars, i.e. thick metal bars mounted on the printed circuit board [PCB] as high-current conductors
    • 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

Landscapes

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

Description

本発明は、バスバモジュールに関する。 The present invention relates to a busbar module.

バスバモジュールは、例えば、電気自動車及びハイブリッド自動車等に搭載される駆動用電源としての電池モジュール（複数の単電池が積層された組電池）に組み付けられて用いられる（特許文献１参照）。 The busbar module is used, for example, by being assembled into a battery module (a battery pack consisting of multiple stacked cells) that serves as a driving power source for vehicles such as electric vehicles and hybrid vehicles (see Patent Document 1).

一般的に、組電池を構成する単電池は、充電、放電に伴う作動熱及び外部環境の温度等に起因して単電池の積層方向に膨張及び収縮する。その結果、組電池（電池モジュール）も、単電池の積層方向に膨張及び収縮するように変形する。また、複数の単電池を積層する際の組み付け公差に起因し、一般的に、組電池の積層方向に対する大きさは、製造ばらつきが生じて、製造した組電池ごとに異なり得る。そこで、一般的に、バスバモジュールは、このような組電池の変形又は製造ばらつき等による位置ばらつきに対応するべく、各単電池に接続されるバスバ用支線（バスバー）の長さにある程度の余裕を持たせて設計される。 Generally, the cells that make up a battery pack expand and contract in the stacking direction of the cells due to factors such as operating heat generated during charging and discharging and the temperature of the external environment. As a result, the battery pack (battery module) also deforms, expanding and contracting in the stacking direction of the cells. Furthermore, due to assembly tolerances when stacking multiple cells, the size of the battery pack in the stacking direction generally varies during manufacturing, and can differ from one battery pack to another. Therefore, busbar modules are generally designed with a certain amount of leeway in the length of the busbar branch wires (busbars) connected to each battery pack to accommodate such deformation of the battery pack or positional variations due to manufacturing variations.

特開２０２０－２０５１７５号公報Japanese Patent Application Laid-Open No. 2020-205175

特許文献１では、各単電池に接続されるバスバ用支線を上下方向にＳ字状に折り畳むことによって組電池の位置ばらつきを吸収するようにしており、高さを利用した吸収構造となっているため、バスバモジュールの低背化が困難であるという課題があった。 In Patent Document 1, the busbar branch wires connected to each cell are folded vertically in an S-shape to absorb variations in the position of the battery pack. Because this absorption structure utilizes height, it is difficult to reduce the height of the busbar module.

本発明は、このような従来技術が有する課題に鑑みてなされたものである。そして本発明の目的は、バスバモジュールの低背化を図りながら、相手側接続機器の位置ばらつきを吸収することができるバスバモジュールを提供することにある。 The present invention was made in consideration of the problems inherent in the prior art. The object of the present invention is to provide a busbar module that can absorb positional variations in the mating device while achieving a low profile.

本発明の態様に係るバスバモジュールは、回路配線が設けられた可撓基板から構成される回路体を備え、回路体は、所定方向に沿って延在する帯状の本体部と、本体部の延在方向に間隔をおいて配置される複数のバスバ部と、を有し、バスバ部の少なくとも一部が、本体部と重なるように配置される。 A busbar module according to one aspect of the present invention includes a circuit body made of a flexible substrate on which circuit wiring is provided. The circuit body has a strip-shaped main body portion extending in a predetermined direction and a plurality of busbar portions arranged at intervals in the extension direction of the main body portion, with at least a portion of the busbar portions arranged to overlap the main body portion.

本発明によれば、バスバモジュールの低背化を図りながら、相手側接続機器の位置ばらつきを吸収することができるバスバモジュールを提供することができる。 This invention provides a busbar module that can absorb positional variations in the mating device while achieving a low profile.

第１実施形態に係るバスバモジュールの一例を示す平面図である。FIG. 2 is a plan view illustrating an example of a busbar module according to the first embodiment. バスバモジュールのバスバ部を拡大した平面図である。FIG. 2 is an enlarged plan view of a busbar portion of the busbar module. バスバ部を折返部において折り返した状態を示す要部拡大の斜視図である。10 is an enlarged perspective view of a main part showing a state in which the bus bar portion is folded back at a folding portion. FIG. バスバ部を折返部において折り返した状態を示す要部拡大の平面図である。10 is an enlarged plan view of a main part showing a state in which the bus bar portion is folded back at a folding portion. FIG. 第２実施形態に係るバスバモジュールの一例を示す平面図である。FIG. 10 is a plan view illustrating an example of a busbar module according to a second embodiment. 本体部とは別体で形成されたバスバ部の斜視図である。FIG. 2 is a perspective view of a bus bar portion formed separately from a main body portion. バスバ部を本体部に接続した状態を示す斜視図である。FIG. 10 is a perspective view showing a state in which the bus bar portion is connected to the main body portion. バスバモジュールの要部を拡大した平面図である。FIG. 2 is an enlarged plan view of a main part of the busbar module.

以下、図面を用いて本実施形態に係るバスバモジュールについて詳細に説明する。なお、図面の寸法比率は説明の都合上誇張されており、実際の比率と異なる場合がある。 The busbar module according to this embodiment will be described in detail below using the drawings. Note that the dimensional proportions in the drawings have been exaggerated for the sake of explanation and may differ from the actual proportions.

［第１実施形態］
図１は、第１実施形態に係るバスバモジュール１Ａの一例を示す平面図であり、図２は、バスバモジュール１Ａのバスバ部１２Ａを拡大した平面図である。図３は、バスバ部１２Ａを折返部２４において折り返した状態を示す要部拡大の斜視図であり、図４は、バスバ部１２Ａを折返部２４において折り返した状態を示す要部拡大の平面図である。 [First embodiment]
Fig. 1 is a plan view showing an example of a busbar module 1A according to the first embodiment, Fig. 2 is an enlarged plan view of a busbar portion 12A of the busbar module 1A, Fig. 3 is an enlarged perspective view of a main portion showing a state in which the busbar portion 12A is folded back at a fold-back portion 24, and Fig. 4 is an enlarged plan view of a main portion showing a state in which the busbar portion 12A is folded back at the fold-back portion 24.

まず、第１実施形態に係るバスバモジュール１Ａが取り付けられる相手側機器の一例である組電池（電池モジュール）について説明する。この組電池は、例えば、複数の単電池（電池セル）を直列に接続して構成される。これらの単電池はそれぞれ、直方体に形成される電池本体を有し、電池本体の上面（電極面）には、正極及び負極等の端子部２Ａ（図３及び図４参照）が設けられる。 First, we will explain an assembled battery (battery module), which is an example of a counterpart device to which the busbar module 1A according to the first embodiment can be attached. This assembled battery is composed, for example, of multiple electric cells (battery cells) connected in series. Each of these electric cells has a battery body formed in a rectangular parallelepiped shape, and terminals 2A (see Figures 3 and 4), such as positive and negative electrodes, are provided on the top surface (electrode surface) of the battery body.

図１から図４に示すように、バスバモジュール１Ａは、回路配線（配線３Ａ）が設けられた可撓基板（フレキシブル基板）から構成され、単電池の端子部２Ａに接続されるバスバー（バスバ部１２Ａ）が設けられた回路体４Ａを備える。 As shown in Figures 1 to 4, the busbar module 1A is composed of a flexible substrate on which circuit wiring (wiring 3A) is provided, and includes a circuit body 4A on which busbars (busbar portions 12A) are provided that are connected to the terminal portions 2A of the unit cells.

回路体４Ａは、単電池が並ぶ方向（単電池の積層方向）に沿って延在する帯状の本体部１１Ａと、本体部１１Ａの延在方向Ｘに間隔をおいて配置される複数のバスバ部１２Ａと、を有する。 The circuit body 4A has a strip-shaped main body portion 11A extending in the direction in which the cells are arranged (the stacking direction of the cells), and multiple busbar portions 12A arranged at intervals in the extension direction X of the main body portion 11A.

このバスバ部１２Ａは、本体部１１Ａから延在する腕形状の第１延在部２１及び第２延在部２２を有して構成されている。 This busbar portion 12A is configured with arm-shaped first extension portion 21 and second extension portion 22 extending from the main body portion 11A.

第１延在部２１は、本体部１１Ａの幅方向Ｙの一端１１ａ側から延出し、本体部１１Ａから離れる方向へ本体部１１Ａの幅方向Ｙに沿って延在している。すなわち、第１延在部２１の基端２１ａは、本体部１１Ａの幅方向Ｙの一端１１ａに接続され、第１延在部２１の先端２１ｂは、第２延在部２２の基端２２ａに接続されている（図２参照）。 The first extension portion 21 extends from one end 11a of the main body portion 11A in the width direction Y and extends along the width direction Y of the main body portion 11A in a direction away from the main body portion 11A. That is, the base end 21a of the first extension portion 21 is connected to one end 11a of the main body portion 11A in the width direction Y, and the tip end 21b of the first extension portion 21 is connected to the base end 22a of the second extension portion 22 (see Figure 2).

その一方、第２延在部２２は、本体部１１Ａと本体部１１Ａの高さ方向Ｚに重なるように配置されている。具体的には、第２延在部２２は、本体部１１Ａに対して本体部１１Ａの延在方向Ｘと交差（図示例では、直交）する方向に跨がるように配置されている。このため、第２延在部２２は、本体部１１Ａの幅方向Ｙの一端１１ａ側から他端１１ｂ側へ跨るように、本体部１１Ａの幅方向Ｙに沿って延在している。すなわち、第２延在部２２の基端２２ａは、第１延在部２１の先端２１ｂに接続され、第２延在部２２の先端２２ｂは、接続部１３Ａに接続されている（図２参照）。 On the other hand, the second extension portion 22 is arranged to overlap the main body portion 11A in the height direction Z of the main body portion 11A. Specifically, the second extension portion 22 is arranged to straddle the main body portion 11A in a direction intersecting (orthogonal in the illustrated example) the extension direction X of the main body portion 11A. Therefore, the second extension portion 22 extends along the width direction Y of the main body portion 11A, straddling from one end 11a to the other end 11b of the main body portion 11A in the width direction Y. In other words, the base end 22a of the second extension portion 22 is connected to the tip 21b of the first extension portion 21, and the tip 22b of the second extension portion 22 is connected to the connection portion 13A (see FIG. 2).

そして、接続部１３Ａが、本体部１１Ａの幅方向Ｙの他端１１ｂ側に配置された、単電池の端子部２Ａに接続されている（図３及び図４参照）。 The connection portion 13A is connected to the terminal portion 2A of the cell located on the other end 11b side of the main body portion 11A in the width direction Y (see Figures 3 and 4).

図２においては図示省略しているが、図２に示される回路体４Ａの表面（上面）に、所定パターンによる電圧検知線等の配線３Ａが設けられている。例えば、図２に破線２３で示す箇所でバスバ部１２Ａの第２延在部２２が折り曲げられる（折り返される）。そして、図３及び図４に示すように、バスバ部１２Ａの第２延在部２２が折り曲げられた状態で、バスバ部１２Ａの接続部１３Ａが単電池の端子部２Ａに半田付け等により電気的に接続されている。 Although not shown in Figure 2, wiring 3A such as a voltage detection line is provided in a predetermined pattern on the surface (top surface) of the circuit body 4A shown in Figure 2. For example, the second extension portion 22 of the busbar portion 12A is bent (folded back) at the location indicated by the dashed line 23 in Figure 2. Then, as shown in Figures 3 and 4, with the second extension portion 22 of the busbar portion 12A bent, the connection portion 13A of the busbar portion 12A is electrically connected to the terminal portion 2A of the cell by soldering or the like.

図３及び図４に示すように、バスバ部１２Ａの接続部１３Ａが単電池の端子部２Ａに接続された状態においては、第１延在部２１と第２延在部２２との間には、本体部１１Ａから離れる方向から本体部１１Ａへ向かう方向に折り返す折返部２４が形成されている。 As shown in Figures 3 and 4, when the connection portion 13A of the busbar portion 12A is connected to the terminal portion 2A of the cell, a fold portion 24 is formed between the first extension portion 21 and the second extension portion 22, folding back from a direction away from the main body portion 11A toward the main body portion 11A.

折返部２４から接続部１３Ａまでの第２延在部２２の長さは、本体部１１Ａの幅よりも長くなるように設定されている。このため、バスバ部１２Ａの接続部１３Ａが単電池の端子部２Ａに接続された状態においては、第２延在部２２は、本体部１１Ａの延在方向Ｘから見て上方へ凸となるアーチ形状（湾曲形状）となっている。 The length of the second extension portion 22 from the folded portion 24 to the connection portion 13A is set to be longer than the width of the main body portion 11A. Therefore, when the connection portion 13A of the busbar portion 12A is connected to the terminal portion 2A of the cell, the second extension portion 22 has an arch shape (curved shape) that convex upward when viewed from the extension direction X of the main body portion 11A.

図３及び図４に示すバスバ部１２Ａの接続部１３Ａが単電池の端子部２Ａに接続された状態においては、本体部１１Ａから延在する腕形状の第１延在部２１及び第２延在部２２が初期状態から変形（変位）し得る。このため、バスバ部１２Ａにおいて吸収する単電池の位置ばらつきの方向が限定されず、全方向（本体部１１Ａの延在方向Ｘ、幅方向Ｙ、高さ方向Ｚ）に対する単電池の位置ばらつきを吸収することが可能となる。 When the connection portion 13A of the busbar portion 12A shown in Figures 3 and 4 is connected to the terminal portion 2A of the cell, the arm-shaped first extension portion 21 and second extension portion 22 extending from the main body portion 11A can deform (displace) from their initial state. Therefore, the direction of the positional variation of the cell that is absorbed by the busbar portion 12A is not limited, and it is possible to absorb positional variation of the cell in all directions (extension direction X, width direction Y, and height direction Z of the main body portion 11A).

また、バスバ部１２Ａの第２延在部２２が折り曲げられた状態で接続部１３Ａが単電池の端子部２Ａに接続されるようにすることにより、高さを利用した吸収構造とすることなく、単電池の位置ばらつきを吸収することが可能となる。特に従来のバスバ用支線（バスバー）を上下方向にＳ字状に折り畳むものと比較して、バスバモジュール１Ａの高さが高くなることを抑制することができる。バスバモジュール１Ａの高さが高くなることを抑制して、バスバモジュール１Ａの低背化を図ることにより、バスバモジュール１Ａを狭いスペースへ配置することが可能となる。 Furthermore, by connecting the connection portion 13A to the terminal portion 2A of the cell while the second extension portion 22 of the busbar portion 12A is bent, it is possible to absorb positional variations in the cell without using an absorption structure that utilizes height. In particular, compared to conventional busbar branch wires (busbars) that are folded vertically in an S-shape, the busbar module 1A can be prevented from becoming too tall. By preventing the busbar module 1A from becoming too tall and achieving a low profile, the busbar module 1A can be placed in a narrow space.

本実施形態では、バスバモジュール１Ａの本体部１１Ａとバスバ部１２Ａとが一体で可撓基板に形成されているため、この可撓基板の歩留まりを向上させることができ、バスバモジュール１Ａの製造コストの削減が可能となる。 In this embodiment, the main body 11A and busbar portion 12A of the busbar module 1A are integrally formed on a flexible substrate, which improves the yield of this flexible substrate and reduces the manufacturing cost of the busbar module 1A.

さらに、バスバモジュール１Ａの全体を片面の可撓基板（片面基板）により構成することができる。このため、バスバモジュール１Ａの全体を両面の可撓基板（両面基板）とする場合と比較して、バスバモジュール１Ａの製造コストを削減することが可能となる。 Furthermore, the entire busbar module 1A can be constructed from a single-sided flexible substrate (single-sided substrate). This makes it possible to reduce the manufacturing costs of the busbar module 1A compared to when the entire busbar module 1A is constructed from a double-sided flexible substrate (double-sided substrate).

次に、バスバモジュール１Ａの効果について説明する。 Next, we will explain the effects of the busbar module 1A.

このように、第１実施形態の態様に係るバスバモジュール１Ａは、回路配線（配線３Ａ）が設けられた可撓基板から構成される回路体４Ａを備える。回路体４Ａは、所定方向に沿って延在する帯状の本体部１１Ａと、本体部１１Ａの延在方向Ｘに間隔をおいて配置される複数のバスバ部１２Ａと、を有する。バスバ部１２Ａの少なくとも一部（第２延在部２２）が、本体部１１Ａと重なるように配置される。 As such, the busbar module 1A according to the first embodiment includes a circuit body 4A composed of a flexible substrate on which circuit wiring (wiring 3A) is provided. The circuit body 4A has a strip-shaped main body portion 11A extending in a predetermined direction, and multiple busbar portions 12A arranged at intervals in the extension direction X of the main body portion 11A. At least a portion of the busbar portion 12A (second extension portion 22) is arranged so as to overlap the main body portion 11A.

バスバモジュール１Ａによれば、本体部１１Ａと重なるように配置される第２延在部２２の変形によって単電池の位置ばらつきを吸収でき、バスバ部１２Ａを上下方向にＳ字状に折り畳む場合と比較してバスバモジュール１Ａの高さが高くなることを抑制できる。このため、バスバモジュール１Ａの低背化を図ることにより、バスバモジュール１Ａを狭いスペースへ配置することが可能となる。 With the busbar module 1A, the second extension portion 22, which is positioned to overlap the main body portion 11A, can deform to accommodate variations in the position of the cells, preventing the busbar module 1A from becoming too tall compared to when the busbar portion 12A is folded vertically in an S-shape. Therefore, by reducing the height of the busbar module 1A, it becomes possible to place the busbar module 1A in a narrow space.

以上のように、第１実施形態によれば、バスバモジュール１Ａの低背化を図りながら、相手側接続機器（単電池）の位置ばらつきを吸収することができるバスバモジュール１Ａを提供することができる。 As described above, the first embodiment provides a busbar module 1A that can absorb positional variations in the mating connection device (cell) while achieving a low profile.

第１実施形態の態様に係るバスバモジュール１Ａにおいて、バスバ部１２Ａの一部（第２延在部２２）は、本体部１１Ａに対して本体部１１Ａの延在方向Ｘと交差する方向に跨がるように配置されてもよい。 In the busbar module 1A according to the first embodiment, a portion of the busbar portion 12A (second extension portion 22) may be arranged to straddle the main body portion 11A in a direction intersecting the extension direction X of the main body portion 11A.

このようにバスバ部１２Ａの第２延在部２２を配置することにより、単電池が並ぶ方向（単電池の積層方向）と交差（図示例では、直交）する方向に対する単電池の位置ばらつきを吸収することが可能となる。 By arranging the second extension portion 22 of the busbar portion 12A in this manner, it is possible to absorb positional variations of the cells in a direction intersecting (orthogonal in the illustrated example) the direction in which the cells are lined up (the stacking direction of the cells).

また、バスバ部１２Ａは、本体部１１Ａの幅方向の一端側から延出し、本体部１１Ａから離れる方向へ延在する第１延在部２１と、第１延在部２１に接続され、本体部１１Ａから離れる方向から本体部１１Ａへ向かう方向に折り返す折返部２４とを有してもよい。バスバ部１２Ａは、折返部２４に接続され、本体部１１Ａの幅方向Ｙの一端１１ａ側から他端１１ｂ側へ跨るように延在する第２延在部２２を有してもよい。バスバ部１２Ａは、第２延在部２２に接続され、本体部１１Ａの幅方向Ｙの他端１１ｂ側に配置された単電池の端子部２Ａに接続される接続部１３Ａを有してもよい。 Furthermore, the busbar portion 12A may have a first extending portion 21 extending from one end side of the main body portion 11A in the width direction and extending in a direction away from the main body portion 11A, and a folded portion 24 connected to the first extending portion 21 and folded back from the direction away from the main body portion 11A in a direction toward the main body portion 11A. The busbar portion 12A may have a second extending portion 22 connected to the folded portion 24 and extending so as to straddle from one end 11a to the other end 11b in the width direction Y of the main body portion 11A. The busbar portion 12A may have a connection portion 13A connected to the second extending portion 22 and connected to a terminal portion 2A of a battery arranged on the other end 11b side in the width direction Y of the main body portion 11A.

バスバ部１２Ａの第２延在部２２が本体部１１Ａを跨ぐことにより、単電池の位置ばらつきを吸収する方向の長さを第２延在部２２の長さの分だけ確保することができ、また、単電池が並ぶ方向に対する位置ばらつきを吸収可能な距離を長く確保できる。また、折返部２４の位置（図２の破線２３参照）を適宜に設定することにより、単電池が並ぶ方向に対する単電池の位置ばらつきを吸収可能な距離を調整することができる。 By having the second extension portion 22 of the busbar portion 12A straddle the main body portion 11A, it is possible to ensure a length in the direction that absorbs positional variations of the cells by the length of the second extension portion 22, and it is also possible to ensure a long distance that can absorb positional variations in the direction in which the cells are lined up. Furthermore, by appropriately setting the position of the fold portion 24 (see dashed line 23 in Figure 2), it is possible to adjust the distance that can absorb positional variations of the cells in the direction in which the cells are lined up.

［第２実施形態］
図５は、第２実施形態に係るバスバモジュール１Ｂの一例を示す平面図であり、図６は、本体部１１Ｂとは別体で形成されたバスバ部１２Ｂの斜視図である。図７は、バスバ部１２Ｂを本体部１１Ｂに接続した状態を示す斜視図であり、図８は、バスバモジュール１Ｂの要部を拡大した平面図である。 Second Embodiment
Fig. 5 is a plan view showing an example of a busbar module 1B according to the second embodiment, Fig. 6 is a perspective view of a busbar portion 12B formed separately from a main body portion 11B, Fig. 7 is a perspective view showing a state in which the busbar portion 12B is connected to the main body portion 11B, and Fig. 8 is an enlarged plan view of a main portion of the busbar module 1B.

まず、第２実施形態に係るバスバモジュール１Ｂが取り付けられる相手側機器の一例である組電池（電池モジュール）について説明する。この組電池は、例えば、複数の単電池（電池セル）を直列に接続して構成される。これらの単電池はそれぞれ、直方体に形成される電池本体を有し、電池本体の上面（電極面）には、正極及び負極等の端子部２Ｂ（図７参照）が設けられる。 First, we will explain a battery pack (battery module), which is an example of a counterpart device to which the busbar module 1B according to the second embodiment can be attached. This battery pack is composed, for example, of multiple electric cells (battery cells) connected in series. Each of these electric cells has a battery body formed in a rectangular parallelepiped shape, and terminal portions 2B (see Figure 7), such as positive and negative electrodes, are provided on the top surface (electrode surface) of the battery body.

図５から図８に示すように、バスバモジュール１Ｂは、回路配線（配線３Ｂ）が設けられた可撓基板（フレキシブル基板）から構成され、単電池の端子部２Ｂに接続されるバスバー（バスバ部１２Ｂ）が設けられた回路体４Ｂを備える。 As shown in Figures 5 to 8, the busbar module 1B is composed of a flexible substrate on which circuit wiring (wiring 3B) is provided, and includes a circuit body 4B on which busbars (busbar portions 12B) are provided that are connected to the terminal portions 2B of the unit cells.

回路体４Ｂは、単電池が並ぶ方向（単電池の積層方向）に沿って延在する帯状の本体部１１Ｂと、本体部１１Ｂの延在方向Ｘに間隔をおいて配置される複数のバスバ部１２Ｂと、を有する。 The circuit body 4B has a strip-shaped main body portion 11B extending in the direction in which the cells are arranged (the stacking direction of the cells), and multiple busbar portions 12B arranged at intervals in the extension direction X of the main body portion 11B.

このバスバ部１２Ｂは、本体部１１Ｂとは別体で形成されており、本体部１１Ｂに後付けで半田付け等により電気的に接続されている。また、バスバ部１２Ｂは、本体部１１Ｂの上に重ねられて、結合部３４ａ，３５ａ（図７参照）を介して半田付け等により本体部１１Ｂに結合されている。 This busbar portion 12B is formed separately from the main body portion 11B and is later electrically connected to the main body portion 11B by soldering or the like. The busbar portion 12B is also placed on top of the main body portion 11B and is connected to the main body portion 11B by soldering or the like via the connecting portions 34a and 35a (see Figure 7).

また、バスバ部１２Ｂは、回路分割体３１と、この回路分割体３１から延在する腕形状の延在部３２と、を有して構成されている。 The busbar portion 12B is composed of a circuit segment 31 and an arm-shaped extension portion 32 extending from this circuit segment 31.

回路分割体３１は、本体部１１Ｂに電気的接続部３３（図７参照）を介して半田付け等により電気的に接続されている。この回路分割体３１は、本体部１１Ｂの幅方向Ｙの一端１１ａ側の端部と結合される第１結合部３４と、本体部１１Ｂの幅方向Ｙの他端１１ｂ側の端部と結合される第２結合部３５と、第１結合部３４と第２結合部３５との間に配置されたパッド３６と、を有する。この実施形態では、本体部１１Ｂの延在方向Ｘに対する第１結合部３４の長さが、本体部１１Ｂの延在方向Ｘに対する第２結合部３５の長さよりも長くなっており、回路分割体３１は、本体部１１Ｂの高さ方向Ｚから見て略Ｌ字状に形成されている。 The circuit divided body 31 is electrically connected to the main body 11B via electrical connection portions 33 (see FIG. 7) by soldering or the like. This circuit divided body 31 has a first coupling portion 34 coupled to an end portion on the side of one end 11a of the main body 11B in the width direction Y, a second coupling portion 35 coupled to an end portion on the side of the other end 11b of the main body 11B in the width direction Y, and a pad 36 disposed between the first coupling portion 34 and the second coupling portion 35. In this embodiment, the length of the first coupling portion 34 in the extension direction X of the main body 11B is longer than the length of the second coupling portion 35 in the extension direction X of the main body 11B, and the circuit divided body 31 is formed in a substantially L-shape when viewed from the height direction Z of the main body 11B.

その一方、延在部３２は、本体部１１Ｂと本体部１１Ｂの高さ方向Ｚに重なるように配置されている。具体的には、延在部３２は、本体部１１Ｂに対して本体部１１Ｂの延在方向Ｘと交差（図示例では、直交）する方向に跨がるように配置されている。このため、延在部３２は、本体部１１Ｂの幅方向Ｙの一端１１ａ側から他端１１ｂ側へ跨るように、本体部１１Ｂの幅方向Ｙに沿って延在している。すなわち、延在部３２の基端３２ａは、回路分割体３１の一端部（第１結合部３４）に接続され、延在部３２の先端３２ｂは、接続部１３Ｂに接続されている（図６参照）。 On the other hand, the extension portion 32 is arranged to overlap the main body portion 11B in the height direction Z of the main body portion 11B. Specifically, the extension portion 32 is arranged to straddle the main body portion 11B in a direction intersecting (orthogonal in the illustrated example) the extension direction X of the main body portion 11B. Therefore, the extension portion 32 extends along the width direction Y of the main body portion 11B, straddling from one end 11a to the other end 11b of the main body portion 11B in the width direction Y. In other words, the base end 32a of the extension portion 32 is connected to one end (first coupling portion 34) of the circuit partition 31, and the tip end 32b of the extension portion 32 is connected to the connection portion 13B (see Figure 6).

そして、接続部１３Ｂが、本体部１１Ｂの幅方向Ｙの他端１１ｂ側に配置された、単電池の端子部２Ｂに接続されている（図７参照）。 The connection portion 13B is connected to the terminal portion 2B of the cell located on the other end 11b side of the main body portion 11B in the width direction Y (see Figure 7).

図７に示される本体部１１Ｂの表面（上面）に、所定パターンによる電圧検知線等の配線３Ｂが設けられており、バスバ部１２Ｂの裏面（下面）には、バスバ部１２Ｂ側の配線が設けられている。これら本体部１１Ｂ側の配線３Ｂとバスバ部１２Ｂ側の配線とは、前述の電気的接続部３３を介して半田付け等により接続されている。そして、図７に示すように、バスバ部１２Ｂが本体部１１Ｂの上に搭載された状態で、バスバ部１２Ｂの接続部１３Ｂが単電池の端子部２Ｂに半田付け等により電気的に接続されている。 Wiring 3B, such as a voltage detection line, is provided in a predetermined pattern on the surface (top surface) of the main body 11B shown in FIG. 7, and wiring on the busbar 12B side is provided on the back surface (bottom surface) of the busbar 12B. The wiring 3B on the main body 11B side and the wiring on the busbar 12B side are connected by soldering or the like via the aforementioned electrical connection portion 33. Then, as shown in FIG. 7, with the busbar 12B mounted on the main body 11B, the connection portion 13B of the busbar 12B is electrically connected to the terminal portion 2B of the cell by soldering or the like.

図７に示すように、バスバ部１２Ｂの接続部１３Ｂが単電池の端子部２Ｂに接続された状態においては、延在部３２が、本体部１１Ｂと本体部１１Ｂの高さ方向Ｚに重なるように配置されている。また、バスバ部１２Ｂの接続部１３Ｂが単電池の端子部２Ｂに接続された状態においては、延在部３２は、本体部１１Ｂの延在方向Ｘから見て上方へ凸となるアーチ形状（湾曲形状）となっている。 As shown in FIG. 7 , when the connection portion 13B of the busbar portion 12B is connected to the terminal portion 2B of the cell, the extension portion 32 is arranged to overlap the main body portion 11B in the height direction Z of the main body portion 11B. Furthermore, when the connection portion 13B of the busbar portion 12B is connected to the terminal portion 2B of the cell, the extension portion 32 has an arch shape (curved shape) that convex upward when viewed from the extension direction X of the main body portion 11B.

図７に示すバスバ部１２Ｂの接続部１３Ｂが単電池の端子部２Ｂに接続された状態においては、回路分割体３１から延在する腕形状の延在部３２が初期状態から変形（変位）し得る。このため、バスバ部１２Ｂにおいて吸収する単電池の位置ばらつきの方向が限定されず、全方向（本体部１１Ｂの延在方向Ｘ、幅方向Ｙ、高さ方向Ｚ）に対する単電池の位置ばらつきを吸収することが可能となる。 When the connection portion 13B of the busbar portion 12B shown in Figure 7 is connected to the terminal portion 2B of the cell, the arm-shaped extension portion 32 extending from the circuit segment 31 can deform (displace) from its initial state. Therefore, the direction of the positional variation of the cell that is absorbed by the busbar portion 12B is not limited, and it is possible to absorb positional variation of the cell in all directions (extension direction X, width direction Y, and height direction Z of the main body portion 11B).

また、バスバ部１２Ｂの延在部３２がアーチ形状となるように変形された状態で、接続部１３Ｂが単電池の端子部２Ｂに接続されるようにすることにより、高さを利用した吸収構造とすることなく、単電池の位置ばらつきを吸収することが可能となる。特に従来のバスバ用支線（バスバー）を上下方向にＳ字状に折り畳むものと比較して、バスバモジュール１Ｂの高さが高くなることを抑制することができる。バスバモジュール１Ｂの高さが高くなることを抑制して、バスバモジュール１Ｂの低背化を図ることにより、バスバモジュール１Ｂを狭いスペースへ配置することが可能となる。 Furthermore, by connecting the connection portion 13B to the terminal portion 2B of the cell while the extension portion 32 of the busbar portion 12B is deformed into an arch shape, it is possible to absorb positional variations in the cell without using an absorption structure that utilizes height. In particular, compared to conventional busbar branch wires (busbars) that are folded vertically in an S-shape, the height of the busbar module 1B can be reduced. By reducing the height of the busbar module 1B and achieving a lower profile, it is possible to place the busbar module 1B in a narrow space.

さらに、バスバモジュール１Ｂの本体部１１Ｂ及びバスバ部１２Ｂをそれぞれ、片面の可撓基板（片面基板）により構成することができる。このため、バスバモジュール１Ｂの全体又は一部を両面の可撓基板（両面基板）とする場合と比較して、バスバモジュール１Ｂの製造コストを削減することが可能となる。 Furthermore, the main body 11B and busbar portion 12B of the busbar module 1B can each be constructed from a single-sided flexible substrate (single-sided substrate). This makes it possible to reduce the manufacturing costs of the busbar module 1B compared to when all or part of the busbar module 1B is constructed from a double-sided flexible substrate (double-sided substrate).

次に、バスバモジュール１Ｂの効果について説明する。 Next, we will explain the effects of the busbar module 1B.

このように、第２実施形態の態様に係るバスバモジュール１Ｂは、回路配線（配線３Ｂ）が設けられた可撓基板から構成される回路体４Ｂを備える。回路体４Ｂは、所定方向に沿って延在する帯状の本体部１１Ｂと、本体部１１Ｂの延在方向Ｘに間隔をおいて配置される複数のバスバ部１２Ｂと、を有する。バスバ部１２Ｂの少なくとも一部（延在部３２）が、本体部１１Ｂと重なるように配置される。 As such, the busbar module 1B according to the second embodiment includes a circuit body 4B composed of a flexible substrate on which circuit wiring (wiring 3B) is provided. The circuit body 4B has a strip-shaped main body portion 11B extending in a predetermined direction and multiple busbar portions 12B arranged at intervals in the extension direction X of the main body portion 11B. At least a portion of the busbar portions 12B (extension portions 32) is arranged to overlap the main body portion 11B.

バスバモジュール１Ｂによれば、本体部１１Ｂと重なるように配置される延在部３２の変形によって単電池の位置ばらつきを吸収でき、バスバ部１２Ｂを上下方向にＳ字状に折り畳む場合と比較してバスバモジュール１Ｂの高さが高くなることを抑制できる。このため、バスバモジュール１Ｂの低背化を図ることにより、バスバモジュール１Ｂを狭いスペースへ配置することが可能となる。 With the busbar module 1B, the extension portion 32, which is arranged to overlap the main body portion 11B, can deform to accommodate variations in the position of the cells, preventing the busbar module 1B from becoming too tall compared to when the busbar portion 12B is folded vertically in an S-shape. Therefore, by reducing the height of the busbar module 1B, it becomes possible to place the busbar module 1B in a narrow space.

以上のように、第２実施形態によれば、バスバモジュール１Ｂの低背化を図りながら、相手側接続機器（単電池）の位置ばらつきを吸収することができるバスバモジュール１Ｂを提供することができる。 As described above, the second embodiment provides a busbar module 1B that can absorb positional variations in the mating connection device (cell) while achieving a low profile.

第２実施形態の態様に係るバスバモジュール１Ｂにおいて、バスバ部１２Ｂの一部（延在部３２）は、本体部１１Ｂに対して本体部１１Ｂの延在方向と交差する方向に跨がるように配置されてもよい。 In the busbar module 1B according to the second embodiment, a portion of the busbar portion 12B (extension portion 32) may be arranged to straddle the main body portion 11B in a direction intersecting the extension direction of the main body portion 11B.

このようにバスバ部１２Ｂの延在部３２を配置することにより、単電池が並ぶ方向（単電池の積層方向）と交差（図示例では、直交）する方向に対する単電池の位置ばらつきを吸収することが可能となる。 By arranging the extension portion 32 of the busbar portion 12B in this manner, it is possible to absorb variations in the position of the cells in a direction that intersects (orthogonal in the illustrated example) the direction in which the cells are lined up (the stacking direction of the cells).

第２実施形態の態様に係るバスバモジュール１Ｂにおいて、バスバ部１２Ｂは、本体部１１Ｂとは別体で形成されて、本体部１１Ｂに後付けで電気的に接続されてもよい。 In the busbar module 1B according to the second embodiment, the busbar portion 12B may be formed separately from the main body portion 11B and electrically connected to the main body portion 11B after installation.

バスバ部１２Ｂが本体部１１Ｂとは別体で形成されるため、本体部１１Ｂの回路配線の設計にとらわれず、バスバ部１２Ｂの回路配線を設計することが可能となる。 Because the busbar portion 12B is formed separately from the main body portion 11B, it is possible to design the circuit wiring of the busbar portion 12B without being bound by the design of the circuit wiring of the main body portion 11B.

また、バスバ部１２Ｂは、本体部１１Ｂに電気的に接続される回路分割体３１と、回路分割体３１における本体部１１Ｂの幅方向Ｙの一端部から延出し、本体部１１Ｂの幅方向Ｙの一端１１ａ側から他端１１ｂ側へ跨るように延在する延在部３２と、を有してもよい。バスバ部１２Ｂは、延在部３２に接続され、本体部１１Ｂの幅方向Ｙの他端１１ｂ側に配置された接続相手側機器（単電池）の端子部２Ｂに接続される接続部１３Ｂを有してもよい。 The busbar portion 12B may also have a circuit segment 31 electrically connected to the main body portion 11B, and an extension portion 32 extending from one end of the circuit segment 31 in the width direction Y of the main body portion 11B and extending across from one end 11a to the other end 11b of the main body portion 11B in the width direction Y. The busbar portion 12B may also have a connection portion 13B connected to the extension portion 32 and connected to a terminal portion 2B of a connection partner device (cell) located on the other end 11b of the main body portion 11B in the width direction Y.

バスバ部１２Ｂの延在部３２が本体部１１Ｂを跨ぐことにより、単電池の位置ばらつきを吸収する方向の長さを延在部３２の長さの分だけ確保することができ、また、単電池が並ぶ方向に対する位置ばらつきを吸収可能な距離を長く確保できる。 By having the extension portion 32 of the busbar portion 12B straddle the main body portion 11B, the length of the extension portion 32 in the direction that absorbs positional variations of the cells can be ensured, and a long distance can be ensured that positional variations in the direction in which the cells are arranged can be absorbed.

以上、本実施形態を説明したが、本実施形態はこれらに限定されるものではなく、本実施形態の要旨の範囲内で種々の変形が可能である。 The present embodiment has been described above, but it is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment.

１Ａ，１Ｂ バスバモジュール
２Ａ，２Ｂ 端子部
３Ａ，３Ｂ 配線
４Ａ，４Ｂ 回路体
１１Ａ，１１Ｂ 本体部
１２Ａ，１２Ｂ バスバ部
１３Ａ，１３Ｂ 接続部
２１ 第１延在部
２２ 第２延在部
２４ 折返部
３１ 回路分割体
３２ 延在部 1A, 1B Bus bar module 2A, 2B Terminal part 3A, 3B Wiring 4A, 4B Circuit body 11A, 11B Main body part 12A, 12B Bus bar part 13A, 13B Connection part 21 First extension part 22 Second extension part 24 Turning part 31 Circuit division body 32 Extension part

Claims (4)

回路配線が設けられた可撓基板から構成される回路体を備え、
前記回路体は、
所定方向に沿って延在する帯状の本体部と、
前記本体部の延在方向に間隔をおいて配置される複数のバスバ部と、を有し、
前記バスバ部の少なくとも一部が、前記本体部に対して前記本体部の延在方向と交差する方向に跨がるように配置され、且つ、前記本体部の延在方向視で上方に凸となるように変形された状態で配置される、
バスバモジュール。 a circuit body formed of a flexible substrate on which circuit wiring is provided;
The circuit body is
a strip-shaped main body portion extending in a predetermined direction;
a plurality of busbar portions arranged at intervals in an extension direction of the main body portion,
At least a part of the busbar portion is disposed so as to straddle the main body portion in a direction intersecting with the extending direction of the main body portion, and is disposed in a deformed state so as to be convex upward when viewed in the extending direction of the main body portion .
Busbar module. 前記バスバ部は、
前記本体部の幅方向の一端側から延出し、前記本体部から離れる方向へ延在する第１延在部と、
前記第１延在部に接続され、前記離れる方向から前記本体部へ向かう方向に折り返す折返部と、
前記折返部に接続され、前記本体部の幅方向の一端側から他端側へ跨るように延在して前記バスバ部の前記一部を構成する第２延在部と、
前記第２延在部に接続され、前記本体部の幅方向の他端側に配置された接続相手側機器の端子部に接続される接続部と、を有する、
請求項１に記載のバスバモジュール。 The bus bar portion is
a first extension portion extending from one end side of the main body portion in a width direction and extending in a direction away from the main body portion;
a folded portion connected to the first extending portion and folded back from the away direction toward the main body portion;
a second extending portion connected to the folded portion and extending from one end side to the other end side in the width direction of the main body portion to form a part of the busbar portion ;
a connection portion connected to the second extension portion and connected to a terminal portion of a counterpart device disposed on the other end side of the main body in the width direction,
The busbar module according to claim 1 . 前記バスバ部は、前記本体部とは別体で形成されて、前記本体部に後付けで電気的に接続される、
請求項１に記載のバスバモジュール。 the busbar portion is formed separately from the main body portion and is later electrically connected to the main body portion;
The busbar module according to claim 1 . 前記バスバ部は、
前記本体部に電気的に接続される回路分割体と、
前記回路分割体における前記本体部の幅方向の一端部から延出し、前記本体部の幅方向の一端側から他端側へ跨るように延在して前記バスバ部の前記一部を構成する延在部と、
前記延在部に接続され、前記本体部の幅方向の他端側に配置された接続相手側機器の端子部に接続される接続部と、を有する、
請求項３に記載のバスバモジュール。 The bus bar portion is
a circuit division body electrically connected to the main body;
an extension portion that extends from one end of the main body portion in the width direction of the circuit divided body, extends from one end side to the other end side of the main body portion in the width direction, and constitutes a part of the busbar portion ;
a connecting portion connected to the extension portion and connected to a terminal portion of a counterpart device disposed on the other end side of the main body in the width direction,
The busbar module according to claim 3 .
JP2023067045A 2023-04-17 2023-04-17 Busbar Module Active JP7794776B2 (en)

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Citations (6)

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JP2016115442A (en) 2014-12-11 2016-06-23 トヨタ自動車株式会社 Assembled battery
JP2016207549A (en) 2015-04-24 2016-12-08 矢崎総業株式会社 Flat cable with plate conductor
WO2017069209A1 (en) 2015-10-20 2017-04-27 矢崎総業株式会社 Conductive member module and battery pack
JP2017199804A (en) 2016-04-27 2017-11-02 矢崎総業株式会社 Printed circuit body
JP2018026311A (en) 2016-08-12 2018-02-15 矢崎総業株式会社 Bus bar module and battery pack
JP2020205175A (en) 2019-06-17 2020-12-24 矢崎総業株式会社 Bus bar module

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016115442A (en) 2014-12-11 2016-06-23 トヨタ自動車株式会社 Assembled battery
JP2016207549A (en) 2015-04-24 2016-12-08 矢崎総業株式会社 Flat cable with plate conductor
WO2017069209A1 (en) 2015-10-20 2017-04-27 矢崎総業株式会社 Conductive member module and battery pack
JP2017199804A (en) 2016-04-27 2017-11-02 矢崎総業株式会社 Printed circuit body
JP2018026311A (en) 2016-08-12 2018-02-15 矢崎総業株式会社 Bus bar module and battery pack
JP2020205175A (en) 2019-06-17 2020-12-24 矢崎総業株式会社 Bus bar module

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