WO2016042855A1 - Structure de fixation de harnais et bloc-batterie - Google Patents

Structure de fixation de harnais et bloc-batterie Download PDF

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Publication number
WO2016042855A1
WO2016042855A1 PCT/JP2015/066476 JP2015066476W WO2016042855A1 WO 2016042855 A1 WO2016042855 A1 WO 2016042855A1 JP 2015066476 W JP2015066476 W JP 2015066476W WO 2016042855 A1 WO2016042855 A1 WO 2016042855A1
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WO
WIPO (PCT)
Prior art keywords
harness
terminal
bus bar
terminal block
mounting structure
Prior art date
Application number
PCT/JP2015/066476
Other languages
English (en)
Japanese (ja)
Inventor
英史 大石
文彦 石黒
加藤　崇行
Original Assignee
株式会社豊田自動織機
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 株式会社豊田自動織機 filed Critical 株式会社豊田自動織機
Publication of WO2016042855A1 publication Critical patent/WO2016042855A1/fr

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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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • 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 harness mounting structure and a battery pack.
  • Patent Document 1 Conventionally, as a battery pack, for example, there is one described in Patent Document 1.
  • a battery pack of Patent Document 1 a plurality of battery modules are accommodated in a housing. Each battery module is configured by arranging a plurality of battery cells.
  • the harness may be electrically connected by attaching the harness to the terminal block.
  • the harness for example, as a conventional mounting structure, a plurality of terminal blocks with bolts protruding from the top surface, and a bus bar arranged across the plurality of terminal blocks and fastened with nuts to the bolts of each terminal block, There is.
  • the harness and the bus bar are electrically connected by attaching the terminal portion of the harness so as to be sandwiched between the bus bar and the nut.
  • the fastening with the nut is loosened, the terminal portion of the harness and the bus bar are separated, and the electrical connection of the harness may be poor.
  • An aspect of the present invention has been made in view of the above circumstances, and an object thereof is to provide a harness mounting structure and a battery pack that can suppress the occurrence of connection failure of a harness.
  • a harness mounting structure includes a plurality of terminal blocks, a bus bar disposed across the plurality of terminal blocks, and a plurality of terminal blocks that are fastened to each other and sandwich the bus bar between the terminal blocks.
  • a clearance elimination unit that eliminates a gap between the terminal block and the bus bar at the non-clamping portion that is generated by the terminal portion of the harness that is clamped by the clamping portion.
  • this mounting structure Even if the fastening by the fastening member is loosened at the clamping part, the fixing of the bus bar at the non-clamping part is maintained, so the terminal part of the harness is between the terminal block and the bus bar due to the rigidity of the bus bar. Can be maintained. Therefore, even if the fastening by the fastening member is loosened at the clamping part, it is possible to suppress the occurrence of poor connection of the harness.
  • this mounting structure has a clearance elimination part that eliminates a clearance between the terminal block and the bus bar at the non-clamping part that is generated by the terminal part of the harness that is clamped by the clamping part. By this clearance elimination part, the mounting posture of the bus bar with respect to a plurality of terminal blocks can be stabilized, and good contact between the bus bar and the terminal part of the harness can be realized.
  • the clearance elimination part may be comprised by arrange
  • the gap elimination part may be configured by increasing the height of the terminal block in the non-clamping part by an amount corresponding to the thickness of the terminal part of the harness relative to the height of the terminal block in the clamping part.
  • the clearance elimination portion can be formed with a simple configuration that increases the height of the terminal block, and an increase in the number of components can be avoided, so that the cost can be reduced.
  • the gap clearance portion may be configured by increasing the thickness of the bus bar in the non-clamping portion by an amount corresponding to the thickness of the harness terminal portion.
  • the clearance elimination portion can be formed with a simple configuration that increases the thickness of the bus bar, and an increase in the number of components can be avoided, so that the cost can be reduced.
  • the clearance elimination part may be constituted by providing a step corresponding to the thickness of the terminal part of the harness on the bus bar between the clamping part and the non-clamping part. According to this mounting structure, the clearance elimination part can be formed with a simple configuration in which a step is provided on the bus bar, and an increase in the number of parts can be avoided, so that the cost can be reduced.
  • the battery pack according to one aspect of the present invention includes a battery module in which a plurality of battery cells are arranged and the harness mounting structure described above housed in a housing.
  • this battery pack has a clearance elimination unit that eliminates the clearance between the terminal block and the bus bar at the non-clamping portion that is generated by the terminal portion of the harness that is clamped by the clamping portion.
  • FIG. 1 is a perspective view showing the battery pack according to the first embodiment.
  • the battery pack 10 according to the present embodiment includes a housing 11 and a plurality of battery modules M1 to M4 accommodated in the housing 11.
  • the housing 11 is formed in, for example, a rectangular box shape, and includes a main body 16, a top plate 17, and a lid member 18.
  • the main body 16 includes a rectangular plate-like bottom plate 12 and rectangular plate-like side walls 13 to 15 erected on three sides of the bottom plate 12. An opening surrounded by the side walls 13 to 15 in the main body 16 is closed by a top plate 17. An opening surrounded by the bottom plate 12, the top plate 17, and the side walls 13 to 15 in the main body 16 is closed by a lid member 18.
  • casing 11 is sealed so that the gas in the said housing
  • the side wall 15 may be provided with a pressure release valve (not shown) that breaks when the internal pressure of the housing 11 rises and releases the pressure inside the housing 11.
  • the battery modules M1 to M4 are fixed to the side wall 14.
  • the battery modules M1 to M4 are arranged in two stages in the vertical direction and arranged side by side in the horizontal direction.
  • the battery cell 22 is a nonaqueous electrolyte secondary battery such as a lithium ion secondary battery.
  • Each battery cell 22 has a positive electrode terminal and a negative electrode terminal.
  • the plurality of battery cells 22 are arranged so that terminals having different polarities are adjacent to each other.
  • the plurality of battery cells 22 are electrically connected in series by a bus bar 28.
  • End plates 30 are provided at both ends in the arrangement direction of the battery cells 22.
  • a bracket 31 is attached to the end plate 30. The bracket 31 is fixed to the side wall 14, whereby the battery modules M1 to M4 are fixed to the side wall 14.
  • a harness mounting structure 40 is provided in the casing 11 between the battery modules M1 to M4 and the top plate 17.
  • the harness 60 is electrically connected to the terminal block 41 by attaching the harness 60 to the terminal block 41.
  • the harness 60 is, for example, a power supply line for supplying electric power to the electronic component 70.
  • the electronic component 70 is, for example, an ECU (Electronic Control Unit) that performs detection and control of the state of charge of the battery modules M1 to M4.
  • FIG. 2 is a cross-sectional view showing the harness mounting structure according to the first embodiment.
  • the harness attachment structure 40 includes a bracket 50, a plurality of terminal blocks 41 fixed to the bracket 50, a bus bar 45 disposed across the plurality of terminal blocks 41, and a plurality of terminal blocks 41. And a plurality of fastening members 49 that are fastened to each of the terminal blocks 41 and sandwich the bus bar 45 with the terminal blocks 41.
  • the fastening member 49 is, for example, a nut.
  • the bracket 50 is formed, for example, by bending a copper plate. As shown in FIG. 1, the bracket 50 includes a first portion 50a and a second portion 50b extending from the upper end of the first portion 50a so as to be bent substantially perpendicularly to the first portion 50a. Thus, it has a substantially inverted L shape.
  • the bracket 50 is fixed to the side wall 14 by being fixed by bolts 51 in a state where the first portion 50 a is along the side wall 14.
  • the bracket 50 is fixed to the side wall 14 so that the second portion 50 b protrudes inward from the side wall 14 and extends in parallel with the bottom plate 12 and the top plate 17.
  • On the second portion 50b a plurality of terminal blocks 41 are arranged at predetermined intervals.
  • the terminal block 41 is formed of resin, for example, and has a cylindrical shape. On the top surface 42 of the terminal block 41, a bolt 43 to which the fastening member 49 is fastened is projected. The terminal block 41 is fixed to the second portion 50 b at the base end, and is fixed to the side wall 14 via the bracket 50. Although only two terminal blocks 41 are shown in FIGS. 1 and 2, other terminal blocks 41 (not shown) may be further arranged so as to be continuous with these terminal blocks 41.
  • the bus bar 45 is formed of, for example, copper and has a rectangular plate shape. As shown in FIG. 2, a plurality of holes 48 are formed in the bus bar 45 at predetermined intervals. The bus bar 45 is disposed across the plurality of terminal blocks 41 in a state where the positions of the holes 48 and the bolts 43 of the terminal blocks 41 are aligned and the bolts 43 are passed through the holes 48. The bus bar 45 is fastened to each terminal block 41 by fastening a fastening member 49 to the bolt 43 protruding from the hole 48.
  • the harness mounting structure 40 includes a pinching portion 80 in which the terminal portion 61 of the harness 60 is pinched between the terminal block 41 and the bus bar 45, and a non-pinching portion in which the terminal portion 61 is not pinched between the terminal block 41 and the bus bar 45. 85.
  • the terminal portion 61 is, for example, a round terminal having a hole 63 and is crimped to the tip of the harness 60.
  • the terminal part 61 is clamped between the terminal block 41 and the bus bar 45.
  • the terminal portion 61 is disposed between the terminal block 41 and the bus bar 45 with the bolt 43 passing through the hole 63, and is sandwiched between the terminal block 41 and the bus bar 45 by the fastening member 49. Thereby, the terminal part 61 and the bus bar 45 are electrically connected.
  • the terminal portion 61 is disposed between the terminal block 41 and the bus bar 45 in the clamping portion 80, and thus corresponds to the thickness of the terminal portion 61 between the terminal block 41 and the bus bar 45.
  • a gap is generated. If the bus bar 45 is attached to the terminal block 41 with such a gap present, the mounting posture of the bus bar 45 with respect to the top surface 42 of the terminal block 41 becomes unstable in the clamping part 80 and the non-clamping part 85, and the fastening of the bus bar 45 It is possible that defects will occur. Therefore, in the harness mounting structure 40, the spacer 90 is used as the gap eliminating portion 95 for eliminating the gap.
  • the spacer 90 is made of, for example, resin.
  • the spacer 90 is formed in, for example, an annular shape having a hole 91 and has a thickness corresponding to the thickness of the terminal portion 61.
  • the spacer 90 is disposed between the terminal block 41 and the bus bar 45 with the bolt 43 passing through the hole 91, and is sandwiched between the terminal block 41 and the bus bar 45 by the fastening member 49.
  • the spacer 90 eliminates the gap corresponding to the thickness of the terminal portion 61 between the terminal block 41 and the bus bar 45, and the bus bar 45 extends along the top surface 42 of the terminal block 41 in the sandwiching portion 80 and the non-pinch portion 85.
  • the mounting posture of the bus bar 45 with respect to the terminal block 41 can be stabilized.
  • the harness mounting structure 40 described above even if the fastening by the fastening member 49 is loosened at the clamping part 80, the fixing of the bus bar 45 at the non-clamping part 85 is maintained.
  • the terminal portion 61 of the harness 60 can be maintained between the bus bar 45 and the bus bar 45. Therefore, even if the fastening by the fastening member 49 is loosened at the sandwiching portion 80, it is possible to suppress the occurrence of poor connection of the harness 60.
  • the harness mounting structure 40 includes a clearance elimination unit 95 that eliminates the clearance between the terminal block 41 and the bus bar 45 in the non-clamping portion 85 caused by the terminal portion 61 of the harness 60 that is clamped by the clamping portion 80. ing. Due to the clearance eliminating portion 95, the bus bar 45 extends along the top surface 42 of the terminal block 41 at the sandwiching portion 80 and the non-pinch portion 85, so that the mounting posture of the bus bar 45 with respect to the terminal block 41 can be stabilized. Thereby, it is possible to satisfactorily fasten the bus bar 45 to the terminal block 41, and it is possible to realize a good contact between the bus bar 45 and the terminal portion 61 of the harness 60.
  • the clearance elimination part 95 can be formed by the simple structure which provides the spacer 90 between the terminal block 41 and the bus-bar 45, and it becomes possible to reduce cost.
  • FIG. 3 is a cross-sectional view showing a harness mounting structure according to the second embodiment.
  • the harness mounting structure 40A of the second embodiment is different from the harness mounting structure 40 of the first embodiment described above in the configuration of the clearance elimination unit 95.
  • the clearance eliminating portion 95 increases the height of the terminal block 41 in the non-clamping portion 85 by an amount corresponding to the thickness of the terminal portion 61 with respect to the height of the terminal block 41 in the clamping portion 80. Is made up of. Specifically, an extension 44 having a thickness corresponding to the thickness of the terminal portion 61 is extended from the top surface 42 of the terminal block 41 in the non-clamping portion 85 as the clearance elimination portion 95. The extension portion 44 eliminates a gap corresponding to the thickness of the terminal portion 61 between the terminal block 41 and the bus bar 45, and the bus bar 45 extends along the top surface 42 of the terminal block 41 in the sandwiching portion 80 and the non-pinching portion 85. Therefore, the mounting posture of the bus bar 45 with respect to the terminal block 41 can be stabilized.
  • the bus bar 45 extends along the top surface 42 of the terminal block 41 in the clamping unit 80 and the non-clamping unit 85 by the clearance eliminating unit 95. Can be stabilized. Thereby, it is possible to satisfactorily fasten the bus bar 45 to the terminal block 41, and it is possible to realize a good contact between the bus bar 45 and the terminal portion 61 of the harness 60.
  • the clearance eliminating portion 95 can be formed with a simple configuration that increases the height of the terminal block 41, and an increase in the number of components can be avoided, so that the cost can be reduced.
  • FIG. 4 is a cross-sectional view showing a harness mounting structure according to the third embodiment.
  • the harness mounting structure 40B of the third embodiment is different from the harness mounting structure 40 of the first embodiment described above in the configuration of the clearance elimination unit 95.
  • the gap eliminating portion 95 is configured by increasing the thickness of the bus bar 45 in the non-clamping portion 85 by an amount corresponding to the thickness of the terminal portion 61. Specifically, as the gap eliminating portion 95, a thick portion 46 that is thicker than the other portions by an amount corresponding to the thickness of the terminal portion 61 is formed in a range corresponding to the non-clamping portion 85 in the bus bar 45. ing. The thick portion 46 eliminates a gap corresponding to the thickness of the terminal portion 61 between the terminal block 41 and the bus bar 45, and the bus bar 45 is formed on the top surface 42 of the terminal block 41 at the sandwiching portion 80 and the non-nip portion 85. Therefore, the mounting posture of the bus bar 45 with respect to the terminal block 41 can be stabilized.
  • the bus bar 45 is along the top surface 42 of the terminal block 41 in the clamping unit 80 and the non-clamping unit 85 by the gap eliminating unit 95. Can be stabilized. Thereby, it is possible to satisfactorily fasten the bus bar 45 to the terminal block 41, and it is possible to realize a good contact between the bus bar 45 and the terminal portion 61 of the harness 60.
  • the clearance eliminating portion 95 can be formed with a simple configuration in which the thickness of the bus bar 45 is increased, and an increase in the number of components can be avoided, so that the cost can be reduced.
  • the range in which the thick portion 46 is formed and the shape of the thick portion 46 are not limited to the illustrated example, and can be changed as appropriate.
  • FIG. 5 is a cross-sectional view showing a harness mounting structure according to the fourth embodiment.
  • the harness attachment structure 40C of the fourth embodiment is different from the harness attachment structure 40 of the first embodiment described above in the configuration of the clearance elimination unit 95.
  • the clearance elimination part 95 is configured by providing a step corresponding to the thickness of the terminal part 61 on the bus bar 45 between the clamping part 80 and the non-clamping part 85.
  • a bent portion 47 is formed as a clearance elimination portion 95 between the sandwiching portion 80 and the non- sandwiching portion 85 in the bus bar 45.
  • a level difference corresponding to the thickness of the terminal portion 61 is provided on the bus bar 45 between the sandwiching portion 80 and the non-sandwich portion 85.
  • the bent portion 47 (step) eliminates a gap corresponding to the thickness of the terminal portion 61 between the terminal block 41 and the bus bar 45, and the top surface of the terminal block 41 at the pinching portion 80 and the non-pinching portion 85. Therefore, the mounting posture of the bus bar 45 with respect to the terminal block 41 can be stabilized.
  • the bus bar 45 is along the top surface 42 of the terminal block 41 in the clamping unit 80 and the non-clamping unit 85 by the clearance eliminating unit 95. Can be stabilized. Thereby, it is possible to satisfactorily fasten the bus bar 45 to the terminal block 41, and it is possible to realize a good contact between the bus bar 45 and the terminal portion 61 of the harness 60.
  • the clearance eliminating portion 95 can be formed with a simple configuration in which a step is provided on the bus bar 45, and an increase in the number of components can be avoided, so that the cost can be reduced.
  • the shape of the bending part 47 is not limited to the illustrated example, It can change suitably.
  • the harness 60 is the power line of the electronic component 70 .
  • the present invention is not limited to this, and the harness 60 is a harness for transmitting the power of the battery modules M1 to M4, for example. May be.
  • the harness mounting structure 40 may be used outside the battery pack 10 or may be used for mounting a general harness.
  • each of the clamping part 80 and the non-clamping part 85 has at least one.
  • the number of the clamping parts 80 and the non-clamping parts 85 is not limited.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)

Abstract

La présente invention concerne une structure de fixation de harnais 40 pourvue d'une pluralité de borniers 41, une barre omnibus 45 agencée pour couvrir la pluralité de borniers 41, et une pluralité d'éléments de fixation 49 fixés à chacun de la pluralité de borniers 41 pour serrer la barre omnibus 45 sur les borniers 41. La structure de fixation de harnais 40 comporte une section de serrage 80 où une section de borne 61 d'un harnais 60 est serrée entre le bornier 41 et la barre omnibus 45, une section non-serrage, 85 où la section de borne 61 du harnais 60 n'est pas serrée entre le bornier 41 et la barre omnibus 45, et une partie d'élimination d'espacement 95 pour éliminer l'espacement créé entre le bornier 41 et la barre omnibus 45 au niveau de la section non-serrage 85 par la section de borne 61 du harnais 60 étant serrée par la section de serrage 80.
PCT/JP2015/066476 2014-09-19 2015-06-08 Structure de fixation de harnais et bloc-batterie WO2016042855A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-190971 2014-09-19
JP2014190971A JP6264245B2 (ja) 2014-09-19 2014-09-19 ハーネス取付構造及び電池パック

Publications (1)

Publication Number Publication Date
WO2016042855A1 true WO2016042855A1 (fr) 2016-03-24

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Application Number Title Priority Date Filing Date
PCT/JP2015/066476 WO2016042855A1 (fr) 2014-09-19 2015-06-08 Structure de fixation de harnais et bloc-batterie

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JP (1) JP6264245B2 (fr)
WO (1) WO2016042855A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004031049A (ja) * 2002-06-25 2004-01-29 Yazaki Corp バッテリ接続プレート
WO2006059434A1 (fr) * 2004-11-30 2006-06-08 Nec Corporation Ensemble d’appareils electriques
JP2008192552A (ja) * 2007-02-07 2008-08-21 Toyota Motor Corp 電極
JP2008270121A (ja) * 2007-04-25 2008-11-06 Sanyo Electric Co Ltd 車両用の電源装置
JP2013235734A (ja) * 2012-05-09 2013-11-21 Toyota Industries Corp 電池スタック
JP2015082492A (ja) * 2013-10-24 2015-04-27 株式会社豊田自動織機 電池パック

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004031049A (ja) * 2002-06-25 2004-01-29 Yazaki Corp バッテリ接続プレート
WO2006059434A1 (fr) * 2004-11-30 2006-06-08 Nec Corporation Ensemble d’appareils electriques
JP2008192552A (ja) * 2007-02-07 2008-08-21 Toyota Motor Corp 電極
JP2008270121A (ja) * 2007-04-25 2008-11-06 Sanyo Electric Co Ltd 車両用の電源装置
JP2013235734A (ja) * 2012-05-09 2013-11-21 Toyota Industries Corp 電池スタック
JP2015082492A (ja) * 2013-10-24 2015-04-27 株式会社豊田自動織機 電池パック

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JP6264245B2 (ja) 2018-01-24
JP2016062798A (ja) 2016-04-25

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