JP2006050769A - Ground structure of electric connection box - Google Patents

Ground structure of electric connection box Download PDF

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JP2006050769A
JP2006050769A JP2004227837A JP2004227837A JP2006050769A JP 2006050769 A JP2006050769 A JP 2006050769A JP 2004227837 A JP2004227837 A JP 2004227837A JP 2004227837 A JP2004227837 A JP 2004227837A JP 2006050769 A JP2006050769 A JP 2006050769A
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junction box
bus bar
battery pack
grounding
electrical junction
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JP4224005B2 (en
Inventor
Yoshiaki Ichikawa
喜章 市川
Tomohiro Ikeda
智洋 池田
Shigenori Matsumoto
茂紀 松本
Isao Watanabe
功 渡辺
Gouhan Tsuchiya
豪範 土屋
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Toyota Motor Corp
Yazaki Corp
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Toyota Motor Corp
Yazaki Corp
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Connection Or Junction Boxes (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To install an electric connection box in a battery pack with favorable workability and reduce the size of a bracket for fixing the electric connection box. <P>SOLUTION: A structure is for installing an electric connection box 1 in a battery pack 35 made of conductive metal that houses a battery 45. A bus bar 8 for grounding is provided on one side face 30 of the electric connection box 1. A stud bolt 12 is erected from the battery pack. While the bracket 43 of the electric connection box is engaged with the stud bolt, the bus bar 8 for grounding is brought into contact with an inner wall face of the battery pack. The bus bar 8 for grounding has a nut portion 16 and a terminal strip 118. The nut portion is fixed on one side wall 34 of the battery pack 35 with a bolt 32, and the terminal strip is placed on the terminal block 6 of the electric connection box. The bus bar 8 for grounding is fixed in a predetermined position on the electric connection box 1 with positioning means 28, 52, and 54 and anchoring means 23, 51, and 29. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、電気自動車等のバッテリパック内に搭載される電気接続箱のアース構造に関するものである。   The present invention relates to a grounding structure for an electric junction box mounted in a battery pack such as an electric vehicle.

図5は従来の電気接続箱のアース構造の一形態を示すものである(特許文献1参照)。   FIG. 5 shows one form of a grounding structure of a conventional electrical junction box (see Patent Document 1).

この構造は、電気接続箱71内の導電金属製のバスバーにボルト72を接続し、ボルト72を絶縁樹脂製のカバー73の膨出部73aの外側に突出させ、金属製の車体パネル74の孔部75にボルト72を挿通し、ナット76で締め付けて、車体パネル74へのバスバーのアース接続と電気接続箱71の固定とを同時に行わせるものである。   In this structure, a bolt 72 is connected to a conductive metal bus bar in the electrical connection box 71, the bolt 72 is projected outside the bulging portion 73 a of the insulating resin cover 73, and a hole in the metal body panel 74 is formed. Bolts 72 are inserted into the section 75 and tightened with nuts 76 so that the grounding of the bus bar to the vehicle body panel 74 and the fixing of the electrical connection box 71 are performed simultaneously.

カバー73はアッパカバーとロアカバーとで構成され、バスバーは絶縁板に積層され、ボルト72の頭部がバスバーの折曲げ延長部に接触しつつ、カバー73の膨出部73aの内部に埋め込まれて固定されている。カバー73の表面にはリレーやヒューズ等の電気部品77が装着されると共に、ワイヤハーネス接続用のコネクタ(図示せず)が設けられている。   The cover 73 is composed of an upper cover and a lower cover, the bus bar is laminated on the insulating plate, and the head of the bolt 72 is embedded in the bulged portion 73a of the cover 73 while contacting the bent extension portion of the bus bar. It is fixed. An electrical component 77 such as a relay or a fuse is mounted on the surface of the cover 73, and a connector (not shown) for connecting a wire harness is provided.

図6は従来の電気接続箱のアース構造の他の形態を示すものである(特許文献2参照)。   FIG. 6 shows another form of a grounding structure of a conventional electric junction box (see Patent Document 2).

この構造は、電気接続箱のカバーの鍔状のブラケット79にバスバー80の延長部を配設すると共に、バスバー80の切欠部内に弾性の略筒状の緩衝部材81を装着し、ボルト82を緩衝部材81の孔部に挿通して車体パネル83側のナット84に螺合させ、バスバー80を車体パネル83に押し付けてアース接続させたものである。   In this structure, an extension portion of the bus bar 80 is disposed on the bowl-shaped bracket 79 of the cover of the electric junction box, and an elastic substantially cylindrical buffer member 81 is mounted in the notch portion of the bus bar 80 to cushion the bolt 82. The member 81 is inserted into the hole of the member 81 and screwed into the nut 84 on the vehicle body panel 83 side, and the bus bar 80 is pressed against the vehicle body panel 83 to be grounded.

ブラケット79は合成樹脂製のロアカバーに一体に設けられ、ロアカバーにはアッパカバーが装着され、アッパカバーはコネクタやヒューズ装着部等を有し、ロアカバー上にバスバーが所要形態に配索され、そのバスバーの一部80が延長されてブラケット79上に配設されている。   The bracket 79 is provided integrally with a synthetic resin lower cover, and the upper cover is attached to the lower cover. The upper cover has a connector, a fuse mounting portion, and the like. A portion 80 is extended and disposed on the bracket 79.

図7は従来の電気接続箱のアース構造のその他の形態を示すものである。   FIG. 7 shows another form of the grounding structure of the conventional electric junction box.

この構造は、電気自動車(ハイブリッド車を含む)の金属製のバッテリパック85内に電気接続箱86を装着して、バッテリパック上部のアース接続用の水平な鍔部87に電気接続箱86の例えば端子台をボルトで締付接続させるものである。   In this structure, an electric connection box 86 is mounted in a metal battery pack 85 of an electric vehicle (including a hybrid vehicle), and the electric connection box 86 is connected to, for example, a horizontal flange 87 for ground connection at the upper part of the battery pack. The terminal block is tightened and connected with bolts.

バッテリパック85はバッテリ(図示せず)を収容する鉄板製のケースであり、バッテリに隣接してバッテリパック内に電気接続箱86が装着される。バッテリパック85の底壁88にはスタッドボルト89が立設され、電気接続箱86の下端側の鍔状のブラケット90の孔部90aにスタッドボルト89を通してナットで締付固定する。   The battery pack 85 is a case made of iron plate that accommodates a battery (not shown), and an electrical connection box 86 is mounted in the battery pack adjacent to the battery. A stud bolt 89 is erected on the bottom wall 88 of the battery pack 85, and is fastened and fixed with a nut through the stud bolt 89 to the hole 90 a of the hook-shaped bracket 90 on the lower end side of the electric connection box 86.

端子台は例えば絶縁樹脂製の柱部内にナットを有し、電気接続箱86内のバスバーの延長部をナット上に配置したり、あるいは、ナットに外部ワイヤハーネスのアース端子をボルトでバッテリパック85の鍔部87と共締めで接続させるものである。
特開平10−322851号公報(第3頁、図1) 特開平10−116637号公報(第2頁、図2)
The terminal block has a nut in a pillar made of insulating resin, for example, and an extended portion of the bus bar in the electrical connection box 86 is arranged on the nut, or the ground terminal of the external wire harness is bolted to the battery pack 85 with a bolt. It connects with the collar part 87 of this.
JP-A-10-322851 (page 3, FIG. 1) Japanese Patent Laid-Open No. 10-116636 (2nd page, FIG. 2)

しかしながら、上記従来の図7の電気接続箱86のアース構造にあっては、バッテリパック85にアース用の水平な鍔部87と垂直なスタッドボルト89とを設けているために、電気接続箱86を図7の如く斜めにして鍔部87の下側に滑り込ませつつ、電気接続箱86のブラケット90の孔部90aをスタッドボルト89に係合させなければならず、バッテリパック85への電気接続箱86の組付作業性が悪いという問題があった。また、バッテリパック85の鍔部87を支点に電気接続箱86のブラケット90を上側から回動させつつスタッドボルト89に係合させるために、ブラケット90の孔部90aは長孔でなければならず、それによりブラケット90が肥大化するという問題もあった。   However, in the conventional grounding structure of the electrical junction box 86 of FIG. 7, since the battery pack 85 is provided with the horizontal flange 87 for the ground and the vertical stud bolt 89, the electrical junction box 86. As shown in FIG. 7, the hole 90 a of the bracket 90 of the electrical connection box 86 must be engaged with the stud bolt 89 while being inclined and slid to the lower side of the flange 87. There was a problem that the assembling workability of the box 86 was poor. Further, in order to engage the stud bolt 89 while rotating the bracket 90 of the electric junction box 86 from the upper side with the flange portion 87 of the battery pack 85 as a fulcrum, the hole portion 90a of the bracket 90 must be a long hole. As a result, there is a problem that the bracket 90 is enlarged.

本発明は、上記した点に鑑み、電気接続箱をバッテリパック内に作業性良く装着することができて、バッテリパックに確実にアース接続することができ、しかも電気接続箱の固定用のブラケットをコンパクト化することのできる電気接続箱のアース構造を提供することを目的とする。   In view of the above points, the present invention can attach the electrical junction box to the battery pack with good workability, can be securely grounded to the battery pack, and a bracket for fixing the electrical junction box can be provided. An object of the present invention is to provide a grounding structure for an electric junction box that can be made compact.

上記目的を達成するために、本発明の請求項1に係る電気接続箱のアース構造は、バッテリを収容する導電金属製のバッテリパックに電気接続箱を装着する構造において、該電気接続箱の一側面にアース用のバスバーを設け、該バッテリパックにスタッドボルトを立設し、該スタッドボルトに該電気接続箱のブラケットを係合させつつ、該アース用のバスバーを該バッテリパックの内壁面に接触させることを特徴とする。   In order to achieve the above object, a ground structure for an electrical junction box according to claim 1 of the present invention is a structure in which an electrical junction box is attached to a battery pack made of conductive metal that accommodates a battery. A grounding bus bar is provided on the side surface, a stud bolt is erected on the battery pack, and the grounding bus bar is brought into contact with the inner wall surface of the battery pack while the stud bolt is engaged with the bracket of the electrical junction box. It is characterized by making it.

上記構成により、電気接続箱をバッテリパック内に上方から垂直に降ろして装着し、それと同時に、スタッドボルトが電気接続箱のブラケットの孔部に挿入され、電気接続箱のアース用のバスバーがバッテリパックの一側壁の内面に面接触する。このように、電気接続箱が一方向のみの移動でバッテリパック内に作業性良く確実に装着される。電気接続箱のブラケットの孔部は長形である必要がなく、孔部は円形に形成される。   With the above configuration, the electric connection box is mounted vertically in the battery pack from the top, and at the same time, the stud bolt is inserted into the hole of the bracket of the electric connection box, and the bus bar for grounding the electric connection box is connected to the battery pack. In contact with the inner surface of one of the side walls. In this way, the electrical junction box is reliably mounted in the battery pack with good workability by movement in only one direction. The hole portion of the bracket of the electric junction box does not need to be long, and the hole portion is formed in a circular shape.

請求項2に係る電気接続箱のアース構造は、請求項1記載の電気接続箱のアース構造において、前記アース用のバスバーがナット部と端子板とを有し、該ナット部が前記バッテリパックの一側壁にボルトで固定され、該端子板が前記電気接続箱の端子台に配置されたことを特徴とする。   The grounding structure of the electrical junction box according to claim 2 is the grounding structure of the electrical junction box according to claim 1, wherein the grounding bus bar has a nut portion and a terminal plate, and the nut portion is a portion of the battery pack. The terminal board is fixed to one side wall with a bolt, and the terminal plate is disposed on a terminal block of the electrical junction box.

上記構成により、アース用のバスバーがボルトでバッテリパックの一側壁に締付接続され、バスバーの端子板が電気接続箱の端子台上で外部の電線のアース端子に接続されたり、あるいは電気接続箱内のバスバー等のアース回路に接続される。端子台上でアース端子やアース回路はボルトとナットで端子板に締付接続される。アース用のバスバーのボルト締付は側方から行われ、端子台のボルトの締付は上方すなわち電気接続箱の組付方向で行われる。   With the above configuration, the grounding bus bar is tightened and connected to one side wall of the battery pack with bolts, and the terminal bar of the bus bar is connected to the ground terminal of the external electric wire on the terminal block of the electrical junction box, or the electrical junction box It is connected to an earth circuit such as a bus bar inside. On the terminal block, the ground terminal and the ground circuit are tightened and connected to the terminal plate with bolts and nuts. The bolting of the bus bar for grounding is performed from the side, and the bolting of the terminal block is performed upward, that is, in the assembling direction of the electric junction box.

請求項3に係る電気接続箱のアース構造は、請求項1又は2記載の電気接続箱のアース構造において、前記アース用のバスバーが位置決め手段と係止手段とで前記電気接続箱の所定位置に固定されたことを特徴とする。   The ground structure of the electrical junction box according to claim 3 is the ground structure of the electrical junction box according to claim 1 or 2, wherein the grounding bus bar is positioned at a predetermined position of the electrical junction box by positioning means and locking means. It is fixed.

上記構成により、アース用のバスバーが電気接続箱に位置決め手段で位置決めされつつ係止手段でワンタッチで簡単に固定される。位置決め手段としては、例えばバスバーの凹部と電気接続箱の凸部や、バスバーを受ける電気接続箱のリブ等が挙げられる。係止手段としては、例えばバスバーの凸部と電気接続箱の凹部や、バスバーの突起と電気接続箱の係合段部等が挙げられる。   With the above structure, the grounding bus bar is easily fixed to the electrical junction box by the touching means while being positioned by the positioning means. Examples of the positioning means include a concave portion of the bus bar and a convex portion of the electric connection box, and a rib of the electric connection box that receives the bus bar. Examples of the locking means include a convex portion of the bus bar and a concave portion of the electrical connection box, and a protrusion of the bus bar and an engagement step portion of the electrical connection box.

請求項4に係る電気接続箱のアース構造は、請求項1〜3の何れかに記載の電気接続箱のアース構造において、前記ナット部を緩衝部材の内側に配置し、該緩衝部材を前記電気接続箱の一側面と前記アース用のバスバーとの間に配置したことを特徴とする。   The ground structure of the electrical junction box according to claim 4 is the ground structure of the electrical junction box according to any one of claims 1 to 3, wherein the nut portion is disposed inside the buffer member, and the buffer member is It is arranged between one side of the connection box and the ground bus bar.

上記構成により、緩衝部材がナットの外周面に弾性的に係合して位置決め兼仮固定される。アース用のバスバーのバッテリパックへの接続固定部が緩衝部材を介して電気接続箱に配置され、例えば電気接続箱の高電圧のリレーの駆動時の振動や音等がバッテリパックに伝達されず、箱状のバッテリパックの共鳴による異音等の発生が防止される。   With the above configuration, the buffer member is elastically engaged with the outer peripheral surface of the nut and positioned and temporarily fixed. The connection fixing part to the battery pack of the bus bar for earthing is arranged in the electric connection box through the buffer member, for example, vibration or sound at the time of driving the high voltage relay of the electric connection box is not transmitted to the battery pack, Generation of abnormal noise due to resonance of the box-shaped battery pack is prevented.

請求項5に係る電気接続箱のアース構造は、請求項1〜4の何れかに記載の電気接続箱のアース構造において、前記ブラケットに前記電気接続箱内の導電金属製のシールドカバーの一部を前記スタッドボルトで共締めすることを特徴とする。   The ground structure of the electrical junction box according to claim 5 is the ground structure of the electrical junction box according to any one of claims 1 to 4, wherein a part of the shield cover made of conductive metal in the electrical junction box is attached to the bracket. Are fastened together with the stud bolt.

上記構成により、電気接続箱内のバスバー等の高電圧回路や高電圧のリレー等のノイズがシールドカバーを介してバッテリパックにアースされ、バッテリパックから車両ボディにアースされる。シールドカバー内には電子制御基板や制御部が配置される。   With the above configuration, noise such as a high voltage circuit such as a bus bar in the electrical junction box or a high voltage relay is grounded to the battery pack via the shield cover, and is grounded from the battery pack to the vehicle body. An electronic control board and a control unit are disposed in the shield cover.

請求項1記載の発明によれば、電気接続箱を上方から真下に降ろしてバッテリパック内に装着することができるから、電気接続箱の組付作業性が向上する。また、アース用のバスバーをバッテリパックの内壁面に摺接させることで、バスバーの表面やバッテリパックの内壁面が清浄化されてアース接触性が高まる。また、電気接続箱のブラケットの孔部をスタッドボルトと同軸方向に移動させることができるから、円形の孔部を採用してブラケットの長さを短縮・コンパクト化させることができる。   According to the first aspect of the present invention, since the electric junction box can be lowered from above and mounted in the battery pack, the assembling workability of the electric junction box is improved. Further, by bringing the grounding bus bar into sliding contact with the inner wall surface of the battery pack, the surface of the bus bar and the inner wall surface of the battery pack are cleaned, and the ground contact property is improved. Moreover, since the hole of the bracket of the electrical junction box can be moved in the same direction as the stud bolt, the length of the bracket can be shortened and made compact by adopting the circular hole.

請求項2記載の発明によれば、バッテリパックと電気接続箱とにアース用のバスバーを締め付けて確実に接触させることができ、これによりアース接続性が向上する。   According to the second aspect of the present invention, the grounding bus bar can be securely brought into contact with the battery pack and the electrical junction box, thereby improving the ground connectivity.

請求項3記載の発明によれば、アース用のバスバーを正確に位置決めしつつ簡単且つ確実に電気接続箱に固定させることができ、バスバーの組付作業性が向上する。   According to the third aspect of the present invention, the grounding bus bar can be easily and reliably fixed to the electric junction box while accurately positioning, and the workability of assembling the bus bar is improved.

請求項4記載の発明によれば、緩衝部材でバッテリパックへの電気接続箱の異音等の拡大が防止され、車両(電気自動車等)の製品品質が向上する。   According to the fourth aspect of the present invention, the buffer member prevents the abnormal noise or the like of the electric junction box from expanding to the battery pack, and the product quality of the vehicle (electric vehicle or the like) is improved.

請求項5記載の発明によれば、電気接続箱で生じたノイズ等をシールドカバーを経てバッテリパックにアースすることで、電気接続箱内の制御部の誤作動が防止され、制御部の機能が常に正確に発揮される。   According to the fifth aspect of the present invention, the noise generated in the electrical junction box is grounded to the battery pack through the shield cover, so that the malfunction of the controller in the electrical junction box is prevented, and the function of the controller is improved. It is always demonstrated accurately.

図1は、本発明に係る電気接続箱のアース構造の一実施形態の概要を示すものである。   FIG. 1 shows an outline of an embodiment of a ground structure for an electrical junction box according to the present invention.

この構造は、電気接続箱1の垂直な外壁面30にアース用のバスバー8を設けると共に、導電金属製のバッテリパック35の底壁36に固定用のスタッドボルト12を立設し、電気接続箱1をバッテリパック35の内側に上方から下向きに組み付けつつ、電気接続箱1のブラケット43の孔部43aにスタッドボルト12を垂直に挿通させ、電気接続箱1のアース用のバスバー8をバッテリパック35の垂直な壁部34の内面に接触させ、壁部34の外面側からボルト32でバッテリパック35とアース用のバスバー8とを締付接続させるものである。   In this structure, the grounding bus bar 8 is provided on the vertical outer wall surface 30 of the electric junction box 1 and the stud bolt 12 for fixing is erected on the bottom wall 36 of the battery pack 35 made of conductive metal. 1 is assembled to the inside of the battery pack 35 downward from above, while the stud bolt 12 is vertically inserted through the hole 43a of the bracket 43 of the electrical connection box 1 to connect the ground bus bar 8 of the electrical connection box 1 to the battery pack 35. The battery pack 35 and the grounding bus bar 8 are tightened and connected with bolts 32 from the outer surface side of the wall 34.

図2は上記電気接続箱1の詳細例を示すものである。   FIG. 2 shows a detailed example of the electrical junction box 1.

この電気接続箱1は、合成樹脂製のカバー47と、カバー47の上面に装着された大電流用のリレー19,20と、カバー47の垂直な一側壁(一側面)30に沿って並列に設けられた複数の端子台4〜7と、一側壁30に集中して設けられた水平方向の複数のコネクタ37〜40と、一側壁30の垂直な外面に配設された導電金属製のアース用のバスバー8とを少なくとも備えるものである。   This electrical junction box 1 is arranged in parallel along a cover 47 made of synthetic resin, relays 19 and 20 for large current mounted on the upper surface of the cover 47, and one vertical side wall (one side surface) 30 of the cover 47. A plurality of terminal blocks 4 to 7 provided, a plurality of horizontal connectors 37 to 40 provided concentrated on one side wall 30, and a ground made of conductive metal disposed on a vertical outer surface of the one side wall 30 The bus bar 8 is provided at least.

本例のアース用のバスバー8は、鉄板をプレス型で打ち抜き折り曲げて形成され、図3にも示す如く、横長な板部13と、板部13の一方に一体に形成された略逆凹字状の膨出部14と、膨出部14の中央の孔部15と同心に膨出部14の裏面に溶着された金属製のナット(ナット部)16と、横長な板部13の他方において垂直に立ち上げられた短い縦板部17と、縦板部17に直交して続く水平な端子板18とを備えている。   The bus bar 8 for grounding in this example is formed by punching and bending an iron plate with a press die. As shown in FIG. 3, as shown in FIG. 3, a substantially reverse concave character formed integrally with one of the horizontally long plate portion 13 and the plate portion 13. On the other side of the plate-like bulging portion 14, a metal nut (nut portion) 16 welded to the back surface of the bulging portion 14 concentrically with the central hole portion 15 of the bulging portion 14, and the horizontally long plate portion 13 A short vertical plate portion 17 that is vertically raised and a horizontal terminal plate 18 that is orthogonal to the vertical plate portion 17 are provided.

膨出部14の傾斜状の側面14aに交差して固定用の幅狭な突部(係止手段)23が設けられ、横長な板部13の他方の下端に略逆L字状の鉤状部26が設けられ、鉤状部26の内側に位置決め用の矩形状の切欠孔(位置決め手段)28が形成され、水平な端子板26の先端にやや幅狭な延長部18aが形成され、延長部18aの両側に突起(係止手段)29が設けられている。   A narrow projecting portion (locking means) 23 for fixing is provided so as to intersect the inclined side surface 14a of the bulging portion 14, and a substantially inverted L-shaped bowl-like shape is formed at the other lower end of the horizontally long plate portion 13. A rectangular cutout hole (positioning means) 28 for positioning is formed inside the hook-shaped portion 26, and a slightly narrow extension 18 a is formed at the tip of the horizontal terminal plate 26. Protrusions (locking means) 29 are provided on both sides of the portion 18a.

図2の如く、電気接続箱1のカバー47の一側壁30には、アース用のバスバー8の一端の突部23を進入係合させる溝を有する膨出部(係止手段)51と、バスバー8の他端の切欠孔28(図3)を係合させる矩形状の突部(位置決め手段)52と、バスバー8の膨出部14に続く中間部の下端を受けるリブ(位置決め手段)54とが設けられている。バスバー8の横長な板部13は電気接続箱1のコネクタ39,40を避けて高さ方向に段付きに形成されている。   As shown in FIG. 2, the side wall 30 of the cover 47 of the electrical junction box 1 has a bulging portion (locking means) 51 having a groove for entering and engaging the protruding portion 23 at one end of the ground bus bar 8, and the bus bar. A rectangular protrusion (positioning means) 52 that engages the notch hole 28 (FIG. 3) at the other end of 8, and a rib (positioning means) 54 that receives the lower end of the intermediate portion following the bulging portion 14 of the bus bar 8. Is provided. The horizontally long plate portion 13 of the bus bar 8 is formed in steps in the height direction so as to avoid the connectors 39 and 40 of the electrical junction box 1.

バスバー8の端子板18は電気接続箱1の片側の端子台6の上に配置され、端子板18の延長部18aは端子台6の後端の低い立壁55と端子台上面との間の隙間に挿入され、延長部両側の突起29(図3)が隙間の両端に係合する。   The terminal plate 18 of the bus bar 8 is disposed on the terminal block 6 on one side of the electrical junction box 1, and the extension 18 a of the terminal plate 18 is a gap between the low standing wall 55 at the rear end of the terminal block 6 and the upper surface of the terminal block. The protrusions 29 (FIG. 3) on both sides of the extension are engaged with both ends of the gap.

また、バスバー8の一端の突部23はカバー47の膨出部51の溝内に挿入され、バスバー8の他端の切欠孔28はカバー47の突部52に係合し、バスバー8の横長な板部13の下端はカバー47のリブ54の上面に当接する。これらによってバスバー8がカバー47に正確に位置決めされつつ確実に固定される。   The protrusion 23 at one end of the bus bar 8 is inserted into the groove of the bulging portion 51 of the cover 47, and the cutout hole 28 at the other end of the bus bar 8 engages with the protrusion 52 of the cover 47. The lower end of the plate 13 abuts on the upper surface of the rib 54 of the cover 47. As a result, the bus bar 8 is securely fixed while being accurately positioned on the cover 47.

バスバー8は、先ず一端の突部23をカバー47の膨出部51内に進入させ、次いで横長な板部13をカバー47の一側壁30に面接触させつつ、水平な端子板18を端子台6上にスライド式にセットすることで、カバー47に容易に装着することができる。   In the bus bar 8, first, the protruding portion 23 at one end enters the bulging portion 51 of the cover 47, and then the horizontal terminal plate 18 is moved to the terminal block while the horizontally long plate portion 13 is brought into surface contact with one side wall 30 of the cover 47. By being slidably set on 6, it can be easily attached to the cover 47.

バスバー8のナット16にバッテリパック35の外側からボルト32を螺合させて締め付けることで、バスバー8の膨出部14の表面がバッテリパック35の一側壁34の内面に面接触で密着し、バスバー8とバッテリパック35とが確実にアース接続される。   The bolt 32 is screwed into the nut 16 of the bus bar 8 from the outside of the battery pack 35 and tightened, whereby the surface of the bulging portion 14 of the bus bar 8 is brought into close contact with the inner surface of the one side wall 34 of the battery pack 35 by surface contact. 8 and the battery pack 35 are securely grounded.

図2の例では、バスバー8の膨出部14の裏側に合成ゴム製の緩衝部材33を装着している。緩衝部材33はナット16を嵌合ないし挿入させる孔部を有し、カバー47の一側壁30とバスバー8の膨出部14の裏面とに密着して、リレー19,20の駆動時の振動や音等をバッテリパック35の壁部等に伝えないようにしている。ナット16はカバー47の一側面30に接触しておらず、膨出部14は緩衝部材33を介してカバー47から離間している。   In the example of FIG. 2, a buffer member 33 made of synthetic rubber is mounted on the back side of the bulging portion 14 of the bus bar 8. The buffer member 33 has a hole for fitting or inserting the nut 16, and is in close contact with the one side wall 30 of the cover 47 and the back surface of the bulging portion 14 of the bus bar 8. Sound or the like is not transmitted to the wall portion of the battery pack 35 or the like. The nut 16 is not in contact with one side surface 30 of the cover 47, and the bulging portion 14 is separated from the cover 47 via the buffer member 33.

図4はバッテリパック35に電気接続箱1を装着した状態を示すものである。   FIG. 4 shows a state in which the electric junction box 1 is mounted on the battery pack 35.

図2のアース用のバスバー8の膨出部14の表面が導電金属製(鉄板製)のバッテリパック35の垂直な壁部34の内面に面接触しつつ、電気接続箱1の後側の左右一対のブラケット43がバッテリパック側のスタッドボルト12に挿通されてナット24(図1)で締付固定される。電気接続箱1は図1の如く上方から垂直に降ろされて作業性良く装着される。ブラケット43の孔部43aは円形であり、長孔を必要としないからブラケット43の長さが短縮されている。孔部43aには金属製のカラーを装着することが好ましい。   The surface of the bulging portion 14 of the grounding bus bar 8 in FIG. 2 is in surface contact with the inner surface of the vertical wall portion 34 of the battery pack 35 made of conductive metal (made of iron plate), while A pair of brackets 43 are inserted into the stud bolts 12 on the battery pack side and fastened and fixed with nuts 24 (FIG. 1). As shown in FIG. 1, the electrical junction box 1 is lowered vertically from above and mounted with good workability. Since the hole 43a of the bracket 43 is circular and does not require a long hole, the length of the bracket 43 is shortened. It is preferable to attach a metal collar to the hole 43a.

図4に鎖線で示す如く、上下二本のシールド電線53がバッテリパック35に沿って配索され、各シールド電線53の板状の端子9,9’が電気接続箱1の中間の端子台4,5に接続されると共に、同じくシールド電線53のアース用の板状の端子11が電気接続箱1の片側の端子台6においてアース用のバスバー8と接続される。各端子9,9’,11はボルト挿通用の孔部を有しており、ボルトを端子9,9’,11の孔部に挿通して端子台4〜6内のナットに螺合する。なお、端子台6にスタッドボルト(図示せず)を立設し、端子11とバスバー8をナットで締付接続することも可能である。   As shown by a chain line in FIG. 4, two upper and lower shielded wires 53 are routed along the battery pack 35, and the plate-like terminals 9 and 9 ′ of each shielded wire 53 are the terminal blocks 4 in the middle of the electrical connection box 1. , 5 and the grounded plate-like terminal 11 of the shielded electric wire 53 is connected to the grounding bus bar 8 at the terminal block 6 on one side of the electrical connection box 1. Each terminal 9, 9 ′, 11 has a hole for inserting a bolt, and the bolt is inserted into the hole of the terminal 9, 9 ′, 11 and screwed into a nut in the terminal block 4-6. A stud bolt (not shown) can be erected on the terminal block 6 and the terminal 11 and the bus bar 8 can be tightened and connected with a nut.

シールド電線53のアース線がバスバー8に接続され、バスバー8がバッテリパック35に接続されて、シールド電線53がバッテリパック35にアースされ、バッテリパック35は金属製の車体パネル(図示せず)にアースされる。電気接続箱1内のアース用のバスバー(図示せず)を端子台6上に配置しておき、シールド電線53のアースと電気接続箱1のアースとをバッテリパック35を介して同時に行わせることも勿論可能である。   The ground wire of the shield wire 53 is connected to the bus bar 8, the bus bar 8 is connected to the battery pack 35, the shield wire 53 is grounded to the battery pack 35, and the battery pack 35 is connected to a metal body panel (not shown). Grounded. A grounding bus bar (not shown) in the electrical junction box 1 is placed on the terminal block 6 so that the shielded wire 53 and the electrical junction box 1 are grounded simultaneously via the battery pack 35. Of course it is possible.

電気接続箱1にはもう一方の片側に同様のアース用の端子台6’を設けておき、アース用のバスバー8を図3とは対称に形成して、シールド電線53の配線方向を180度逆にすることも可能である。この場合も位置決め用のリブ54(図2)や係止用の膨出部51や突部52をカバー47に設けておくことが好ましい。   The electrical junction box 1 is provided with a similar grounding terminal block 6 'on the other side, and the grounding bus bar 8 is formed symmetrically with FIG. 3 so that the wiring direction of the shielded wire 53 is 180 degrees. The reverse is also possible. Also in this case, it is preferable that the positioning rib 54 (FIG. 2), the bulging portion 51 for locking, and the protrusion 52 are provided on the cover 47.

電気接続箱1の中間の端子台4,5はシールド電線53でインバータ(図示せず)に接続され、インバータでバッテリ45(図4)からの直流電流を交流に変換する。バッテリからの+極と−極の回路は電気接続箱1の各コネクタ22,25に接続され、カバー47内の各極のバスバー(図示せず)で各極のリレー19,20に送られ、各極のリレー19,20を介してバスバーが中間の+極と−極の端子台4,5に続いている。リレー19,20はバッテリ45とインバータとの間の回路を制御装置(図示せず)の指示で断続して、電気自動車のモータへの電流の供給をコントロールする。   The intermediate terminal blocks 4 and 5 of the electrical junction box 1 are connected to an inverter (not shown) by a shielded electric wire 53, and the inverter converts a direct current from the battery 45 (FIG. 4) into an alternating current. The positive and negative circuits from the battery are connected to the connectors 22 and 25 of the electrical junction box 1 and sent to the relays 19 and 20 of the respective poles by bus bars (not shown) of the respective poles in the cover 47. A bus bar is connected to the intermediate terminal blocks 4 and 5 via the relays 19 and 20 of each electrode. Relays 19 and 20 control the supply of current to the motor of the electric vehicle by intermittently connecting a circuit between the battery 45 and the inverter according to an instruction from a control device (not shown).

図2,図4で、符号21は回路遮断用のサービスプラグ、27は内部バスバーに対する電流センサ、44は小電流ヒューズ、37は小電流ヒューズ44に続くコネクタ、38はリレー駆動用のコネクタ、7はDC/DCコンバータ用の端子台、39は小電流用のコネクタ、40はサービスプラグ検知用のコネクタ、41,42は車両側回路接続用のコネクタをそれぞれ示している。   2 and 4, reference numeral 21 is a service plug for circuit interruption, 27 is a current sensor for the internal bus bar, 44 is a small current fuse, 37 is a connector following the small current fuse 44, 38 is a connector for driving a relay, 7 Is a terminal block for a DC / DC converter, 39 is a connector for small current, 40 is a connector for detecting a service plug, and 41 and 42 are connectors for connecting a vehicle side circuit.

電気接続箱1内には大電流用のヒューズ(図示せず)がバッテリ回路とリレー19との間で設けられている。内部バスバーはバスバー回路板(図示せず)や内部カバー(図示せず)の上面に積層配索される。内部カバーの下側にはシールドカバー(図示せず)とその下側のロアカバー49上の制御基板(図示せず)とが設けられ、シールドカバーはブラケット43の下に重ねられてスタッドボルト12でバッテリパック35の底壁36に共締めアースされる。   A large current fuse (not shown) is provided in the electrical junction box 1 between the battery circuit and the relay 19. The internal bus bar is laminated and arranged on the upper surface of a bus bar circuit board (not shown) or an internal cover (not shown). A shield cover (not shown) and a control board (not shown) on the lower cover 49 below the inner cover are provided on the lower side of the inner cover. The bottom wall 36 of the battery pack 35 is grounded together.

図4で、符号45aはバッテリ45を構成する各セル、31はDC/DCコンバータをそれぞれ示している。電気接続箱1の一側壁30側の各コネクタ37〜40はバッテリパック35の一側壁34の切欠孔(一側壁34の上端から下向きに切欠されている開口)に上側から挿入される。各切欠孔への各コネクタ37〜40の挿入は電気接続箱1を上方からバッテリパック35内に垂直に装着すると同時に行われる。各コネクタ37〜40にはバッテリパック35の外側から外部ワイヤハーネス(図示せず)の各コネクタが接続される。   In FIG. 4, reference numeral 45a indicates each cell constituting the battery 45, and 31 indicates a DC / DC converter. The connectors 37 to 40 on the one side wall 30 side of the electrical junction box 1 are inserted from above into the cutout holes (openings cut downward from the upper end of the one side wall 34) of the one side wall 34 of the battery pack 35. The connectors 37 to 40 are inserted into the respective cutout holes at the same time when the electrical junction box 1 is vertically mounted in the battery pack 35 from above. Each connector 37 to 40 is connected to each connector of an external wire harness (not shown) from the outside of the battery pack 35.

本発明に係る電気接続箱のアース構造の一実施形態の概要を示す側面図である。It is a side view which shows the outline | summary of one Embodiment of the earth structure of the electrical-connection box based on this invention. 電気接続箱の詳細例を示す斜視図である。It is a perspective view which shows the detailed example of an electrical junction box. アース用のバスバーの一形態を示す斜視図である。It is a perspective view which shows one form of the bus bar for grounding. 同じく電気接続箱のアース構造の詳細例を示す平面図である。It is a top view which shows the detailed example of the earth structure of an electrical junction box similarly. 従来の電気接続箱のアース構造の一形態を示す分解斜視図である。It is a disassembled perspective view which shows one form of the earth structure of the conventional electrical junction box. 従来の電気接続箱のアース構造の他の形態を示す断面図である。It is sectional drawing which shows the other form of the earth structure of the conventional electrical junction box. 従来の電気接続箱のアース構造のその他の形態を示す側面図である。It is a side view which shows the other form of the earth structure of the conventional electrical junction box.

符号の説明Explanation of symbols

1 電気接続箱
6 端子台
8 アース用のバスバー
12 スタッドボルト
16 ナット部
18 端子板
23,51、29 係止手段
28,52、54 位置決め手段
30 一側壁(一側面)
32 ボルト
33 緩衝部材
34 一側壁
35 バッテリパック
43 ブラケット
45 バッテリ
DESCRIPTION OF SYMBOLS 1 Electrical junction box 6 Terminal block 8 Bus bar for earthing 12 Stud bolt 16 Nut part 18 Terminal board 23,51,29 Locking means 28,52,54 Positioning means 30 One side wall (one side)
32 Bolt 33 Buffer member 34 One side wall 35 Battery pack 43 Bracket 45 Battery

Claims (5)

バッテリを収容する導電金属製のバッテリパックに電気接続箱を装着する構造において、該電気接続箱の一側面にアース用のバスバーを設け、該バッテリパックにスタッドボルトを立設し、該スタッドボルトに該電気接続箱のブラケットを係合させつつ、該アース用のバスバーを該バッテリパックの内壁面に接触させることを特徴とする電気接続箱のアース構造。   In a structure in which an electric junction box is attached to a conductive metal battery pack that houses a battery, a grounding bus bar is provided on one side of the electric junction box, a stud bolt is erected on the battery pack, and the stud bolt is attached to the stud bolt. A grounding structure for an electrical junction box, wherein the grounding bus bar is brought into contact with an inner wall surface of the battery pack while engaging a bracket of the electrical junction box. 前記アース用のバスバーがナット部と端子板とを有し、該ナット部が前記バッテリパックの一側壁にボルトで固定され、該端子板が前記電気接続箱の端子台に配置されたことを特徴とする請求項1記載の電気接続箱のアース構造。   The grounding bus bar has a nut portion and a terminal plate, the nut portion is fixed to one side wall of the battery pack with a bolt, and the terminal plate is disposed on a terminal block of the electrical connection box. The ground structure of the electrical junction box according to claim 1. 前記アース用のバスバーが位置決め手段と係止手段とで前記電気接続箱の所定位置に固定されたことを特徴とする請求項1又は2記載の電気接続箱のアース構造。   3. The grounding structure for an electrical junction box according to claim 1, wherein the grounding bus bar is fixed at a predetermined position of the electrical junction box by positioning means and locking means. 前記ナット部を緩衝部材の内側に配置し、該緩衝部材を前記電気接続箱の一側面と前記アース用のバスバーとの間に配置したことを特徴とする請求項1〜3の何れかに記載の電気接続箱のアース構造。   The said nut part is arrange | positioned inside a buffer member, and this buffer member is arrange | positioned between the one side of the said electrical-connection box, and the said bus-bar for earth | grounding, The any one of Claims 1-3 characterized by the above-mentioned. Earth structure of the electrical junction box. 前記ブラケットに前記電気接続箱内の導電金属製のシールドカバーの一部を前記スタッドボルトで共締めすることを特徴とする請求項1〜4の何れかに記載の電気接続箱のアース構造。   The earth structure of the electrical junction box according to any one of claims 1 to 4, wherein a part of the shield cover made of conductive metal in the electrical junction box is fastened to the bracket with the stud bolt.
JP2004227837A 2004-08-04 2004-08-04 Electrical junction box ground structure Expired - Fee Related JP4224005B2 (en)

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US20170288286A1 (en) * 2016-04-01 2017-10-05 Faraday&Future Inc. Liquid temperature regulated battery pack for electric vehicles
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JP2019068631A (en) * 2017-10-02 2019-04-25 矢崎総業株式会社 Electric connection box and wire harness
JP2020071926A (en) * 2018-10-29 2020-05-07 矢崎総業株式会社 Electric connection box ground connection structure and electric connection box
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WO2017126272A1 (en) * 2016-01-19 2017-07-27 カルソニックカンセイ株式会社 Assembled battery
US20170288286A1 (en) * 2016-04-01 2017-10-05 Faraday&Future Inc. Liquid temperature regulated battery pack for electric vehicles
JP2019040808A (en) * 2017-08-28 2019-03-14 カルソニックカンセイ株式会社 Assembled battery
JP6400808B1 (en) * 2017-08-28 2018-10-03 カルソニックカンセイ株式会社 Assembled battery
JP2019068631A (en) * 2017-10-02 2019-04-25 矢崎総業株式会社 Electric connection box and wire harness
JP2020071926A (en) * 2018-10-29 2020-05-07 矢崎総業株式会社 Electric connection box ground connection structure and electric connection box
JP2020088972A (en) * 2018-11-20 2020-06-04 矢崎総業株式会社 Electrical connection box
CN111211282A (en) * 2018-11-22 2020-05-29 马自达汽车株式会社 Battery, method for connecting conductive wire of battery and method for removing conductive wire
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US11929457B2 (en) 2019-01-25 2024-03-12 Lg Energy Solution, Ltd. Bolting device for manufacturing battery pack
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