JP5737156B2 - Vehicle grounding device - Google Patents

Vehicle grounding device Download PDF

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JP5737156B2
JP5737156B2 JP2011260007A JP2011260007A JP5737156B2 JP 5737156 B2 JP5737156 B2 JP 5737156B2 JP 2011260007 A JP2011260007 A JP 2011260007A JP 2011260007 A JP2011260007 A JP 2011260007A JP 5737156 B2 JP5737156 B2 JP 5737156B2
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members
plate
conductive
support member
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JP2013112160A (en
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裕樹 河村
裕樹 河村
洋治 中森
洋治 中森
祐司 神谷
祐司 神谷
健次 柳
健次 柳
朗 前田
朗 前田
田中　直哉
直哉 田中
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Mitsubishi Motors Corp
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Description

本発明は、走行用の電動モータの動力源となる複数の充電式のバッテリーセルを備えた車両のアース装置に関する。   The present invention relates to a vehicle grounding device including a plurality of rechargeable battery cells that serve as a power source for an electric motor for traveling.

走行用の駆動モータを備えた電気自動車、あるいは走行用の駆動モータと内燃機関の双方を備えた所謂ハイブリッド自動車には、駆動モータの動力源となる充電可能な電気パックが搭載されている。電池パックは、複数のバッテリーセルをケーシング内に配列して、内燃機関に用いるバッテリーよりも高い電圧を出力して駆動モータを駆動するように構成されている。
このような高電圧の電池パックは高電圧機器となり、絶縁故障した際に高電圧を帯びる可能性があることから、工具なしに触れることができる部位を露出導電部と定義されている。そしてこの露出導電部は、例えば電気的シャシ(車体)とアースすることが法規により定められている。一般に露出導電部のアース手段にはケーブル類を用いることが多く、ケーブルや電池パックを飛び石等から保護する目的でカバー部材によって覆われている事も多い。また、特許文献１では、電気自動車において、バッテリーから延びるハーネスを車体下面に配置すると、走行中にカプラーに飛び石が当たる可能性があることから、バッテリボックス側面と車体左右方向に延びるフレーム部材とによって区画された空間にカプラーを配置して保護する構成が開示されている。 An electric vehicle equipped with a driving motor for traveling, or a so-called hybrid vehicle equipped with both a traveling driving motor and an internal combustion engine is equipped with a rechargeable electric pack serving as a power source for the driving motor. The battery pack is configured to arrange a plurality of battery cells in a casing and output a voltage higher than that of a battery used in an internal combustion engine to drive a drive motor.
Since such a high voltage battery pack becomes a high voltage device and may be charged with a high voltage when an insulation failure occurs, a portion that can be touched without a tool is defined as an exposed conductive portion. It is stipulated by law that the exposed conductive portion is grounded with, for example, an electric chassis (vehicle body). In general, cables are often used as the grounding means of the exposed conductive portion, and are often covered with a cover member for the purpose of protecting the cable and battery pack from stepping stones. Further, in Patent Document 1, in an electric vehicle, if a harness extending from a battery is arranged on the lower surface of the vehicle body, there is a possibility that a stepping stone hits the coupler during traveling. A configuration is disclosed in which a coupler is disposed and protected in a partitioned space.

特許第３８１９６０５号公報Japanese Patent No. 3819605

アースのためのケーブル類をカバー部材で覆うことで保護することは可能であるが、車体の下部構造によってはカバー部材を設置することが難しく、また、仮にカバー部材を設置した場合、メンテナンス時の着脱作業が増えるとともに、カバー部材に例えば海水や泥などが溜まってしまうと露出導電部の腐食につながることから、カバー部材に排出構造が求められてしまう。特許文献１の構成では、カバー部材は不要となるが、カプラーを用いているため、カプラーの外れや、万が一飛び石が当たったときに、樹脂製のカプラーの場合だと損傷や断線が懸念される。
本発明は、メンテナンス時の作業性を考慮しつつも、導電性部材の腐食や飛び石による損傷や断線を防止できる車両のアース装置を提供することを、その目的とする。 Although it is possible to protect the grounding cables by covering them with a cover member, it is difficult to install the cover member depending on the lower structure of the vehicle body, and if a cover member is installed, As the number of attaching / detaching operations increases and, for example, seawater or mud accumulates in the cover member, it leads to corrosion of the exposed conductive portion, so that a discharge structure is required for the cover member. In the configuration of Patent Document 1, a cover member is not necessary, but since a coupler is used, there is a concern about damage or disconnection in the case of a resin coupler when the coupler is detached or when a stepping stone hits it. .
An object of the present invention is to provide a vehicle grounding device capable of preventing the corrosion of a conductive member, damage due to a stepping stone, and disconnection while considering workability during maintenance.

本発明は、車両に搭載された電池パックと、電池パックを車両の前後方向に延びる一対のサイドメンバ間に支持する支持部材と、支持部材とサイドメンバとを連結する導電性部材とを備え、導電性部材は、支持部材の車両の後方に配置されて車両の前方視において支持部材に重なるように配置されることを特徴としている。
本発明に係る車両のアース装置において、導電性部材と接続される支持部材又はサイドメンバのうち一方は締結部材により締結され、他方は溶接により接合されることを特徴としている。
本発明に係る車両のアース装置において、導電性部材は、車両の上面視においてサイドメンバとの接続部と、支持部材との接続部とが車両幅方向にオフセットされていることを特徴としている。
本発明に係る車両のアース装置において、導電性部材は、サイドメンバの接続部と支持部材の接続部との間に、車両の衝突荷重を吸収する脆弱部が形成されていることを特徴としている。
本発明に係る車両のアース装置において、導電性部材は、サイドメンバの接続部と支持部材の接続部との間を車両上下方向に連接する縦壁が形成されていて、当該縦壁に車両前後方向に貫通する開口が形成されていることを特徴としている。
本発明に係る車両のアース装置において、導電性部材は、支持部材との接続部を複数箇所有することを特徴としている。 The present invention includes a battery pack mounted on a vehicle, a support member that supports the battery pack between a pair of side members extending in the front-rear direction of the vehicle, and a conductive member that connects the support member and the side member, The conductive member is disposed behind the vehicle of the support member and is disposed so as to overlap the support member in a front view of the vehicle.
In the vehicle ground device according to the present invention, one of the support member and the side member connected to the conductive member is fastened by a fastening member, and the other is joined by welding.
In the vehicle ground device according to the present invention, the conductive member is characterized in that the connection portion with the side member and the connection portion with the support member are offset in the vehicle width direction in a top view of the vehicle.
In the vehicle grounding device according to the present invention, the conductive member is characterized in that a fragile portion that absorbs a collision load of the vehicle is formed between the connection portion of the side member and the connection portion of the support member. .
In the vehicle ground device according to the present invention, the conductive member is formed with a vertical wall connecting the side member connecting portion and the supporting member connecting portion in the vehicle vertical direction, and the vertical wall is connected to the front and rear of the vehicle. An opening penetrating in the direction is formed.
In the vehicle ground device according to the present invention, the conductive member has a plurality of connection portions with the support member.

本発明によれば、支持部材とサイドメンバとを連結する導電性部材が、支持部材の車両後方に配置されて車両の前方視において支持部材に重なるように配置されるため、導電性部材となる板状部材が、支持部材の陰に配置されることとなり、従来のようにカバー部材が無くても走行時の飛び石による損傷を回避することができる。   According to the present invention, the conductive member that connects the support member and the side member is disposed on the rear side of the support member so as to overlap the support member when viewed from the front of the vehicle, and thus becomes a conductive member. The plate-like member is disposed behind the support member, and damage due to stepping stones during traveling can be avoided even without a cover member as in the prior art.

本発明のアース装置が適用された車両の概略構成図。1 is a schematic configuration diagram of a vehicle to which an earth device of the present invention is applied. 電池パックの取付部近傍の構成を示す拡大底面図。The enlarged bottom view which shows the structure of the attachment part vicinity of a battery pack. サイドメンバと取付けメンバと露出導電部となる板状部材の取付け状態を車両底面側から見た拡大斜視図。The expansion perspective view which looked at the attachment state of the plate-shaped member used as a side member, an attachment member, and an exposure electrically-conductive part from the vehicle bottom face side. サイドメンバと取付けメンバと露出導電部となる板状部材の取付け部分を車両側面から見た部分拡大断面図。The partial expanded sectional view which looked at the attachment part of the plate-shaped member used as a side member, an attachment member, and an exposure electrically-conductive part from the vehicle side surface. 露出導電部の取付け状態を車両底面側から見た拡大図。The enlarged view which looked at the attachment state of an exposed electroconductive part from the vehicle bottom face side. 開口を形成した露出導電部の取付け状態を車両側面から見た部分拡大断面図。The partial expanded sectional view which looked at the attachment state of the exposure electroconductive part which formed the opening from the vehicle side. 図２と異なる電池パックの取付部近傍の構成を示す拡大底面図FIG. 2 is an enlarged bottom view showing the configuration near the mounting portion of the battery pack different from FIG. 図７で用いる露出導電部の別な形態の構成を示す拡大斜視図。The expansion perspective view which shows the structure of another form of the exposed electroconductive part used in FIG. サイドメンバと取付けメンバに対し、図８に示す露出導電部となる別な形態の板状部材の取付け状態を車両底面側から見た拡大斜視図。The expansion perspective view which looked at the attachment state of the plate-shaped member of another form used as the exposure electrically-conductive part shown in FIG. 8 with respect to the side member and the attachment member from the vehicle bottom face side. 車両走行時における飛び石と板状部材の位置関係を説明するための側面視図。The side view for demonstrating the positional relationship of a stepping stone and a plate-shaped member at the time of vehicle travel.

以下、図面を用いて本発明に係る車両のアース装置について説明する。
図１はアース装置が適用された車両１の概略図である。この車両１は図示しない走行用の駆動モータを備えた車両である。車両１の中央部には、駆動モータの動力源となる充電可能な電気パック２が搭載されている。電池パック２は、複数のバッテリーセル３０をケーシング３内に配置されていて、高電圧を出力して駆動モータを駆動するように構成されている。 Hereinafter, a vehicle ground device according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view of a vehicle 1 to which a grounding device is applied. This vehicle 1 is a vehicle provided with a driving motor for travel (not shown). A rechargeable electric pack 2 serving as a power source for the drive motor is mounted at the center of the vehicle 1. The battery pack 2 has a plurality of battery cells 30 arranged in the casing 3 and is configured to output a high voltage to drive a drive motor.

ケーシング３は樹脂製であって、その一部の開口部から外部に導電部４が露呈している。ケーシング３には、ケーシング３より車両幅方向Ｗに突出した支持部材となる複数の取付けメンバ５〜８が設けられている。取付けメンバ５〜８は、車両幅方向Ｗに延びた金属製の導電性部材で閉断面構造に構成されたものである。取付けメンバ５〜８は、車両前後方向Ａに間隔を開けて配置され、ケーシング３の例えば底部３ａに固定されている。これら取付けメンバ５〜８のうち、車両前方側に位置する取付けメンバ５には、導電部４が直接接触している。   The casing 3 is made of resin, and the conductive portion 4 is exposed to the outside through a part of the opening. The casing 3 is provided with a plurality of mounting members 5 to 8 serving as support members that protrude in the vehicle width direction W from the casing 3. The mounting members 5 to 8 are made of a metal conductive member extending in the vehicle width direction W and have a closed cross-sectional structure. The attachment members 5 to 8 are arranged at intervals in the vehicle longitudinal direction A, and are fixed to, for example, the bottom 3 a of the casing 3. Of these mounting members 5 to 8, the conductive portion 4 is in direct contact with the mounting member 5 located on the vehicle front side.

取付けメンバ５〜８の両端５ａ、５ｂ、６ａ、６ｂ、７ａ、７ｂ、８ａ、８ｂは、図２にも示すように、車両前後方向Ａに延在し、車両幅方向Ｗに位置する金属製の導電性部材で形成されたサイドメンバ９，１０に固定されている。電池パック２は、取付けメンバ５〜８をサイドメンバ９，１０に固定することで、車両１の図示しないフロアよりも下方に配置されている。   Both ends 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b of the mounting members 5-8 extend in the vehicle longitudinal direction A and are made of metal located in the vehicle width direction W as shown in FIG. Are fixed to side members 9 and 10 formed of a conductive member. The battery pack 2 is disposed below a floor (not shown) of the vehicle 1 by fixing the mounting members 5 to 8 to the side members 9 and 10.

本形態では、取付けメンバ５〜８を、電池パック２をサイドメンバ９，１０に取付ける専用のものとしたが、例えば、サイドメンバ９，１０間に掛け渡されてサイドメンバと相まってシャーシを構成するクロスメンバを電池パック２の下方に配置し、同クロスメンバを介して電池パック２をサイドフレーム９，１０に固定することも可能である。ただクロスメンバは、シャーシの剛性確保が優先されることから、配置場所には制約が多い部材であるので、本形態のように、個別に電池パック２用の取付けメンバ５〜８を用いてサイドメンバ９，１０に固定する形態の方が、電池パック２の重量を考慮して配置できるので好ましい。   In this embodiment, the attachment members 5 to 8 are dedicated for attaching the battery pack 2 to the side members 9 and 10. For example, the attachment members 5 to 8 are spanned between the side members 9 and 10 to form a chassis together with the side members. It is also possible to dispose the cross member below the battery pack 2 and fix the battery pack 2 to the side frames 9 and 10 via the cross member. However, the cross member is a member with many restrictions on the arrangement location because priority is given to securing the rigidity of the chassis. Therefore, as in the present embodiment, the side members are individually used with the mounting members 5 to 8 for the battery pack 2. The configuration in which the members 9 and 10 are fixed is preferable because the weight of the battery pack 2 can be taken into consideration.

取付けメンバ５〜８はサイドメンバ９，１０に横架されてそれぞれの両端５ａ、５ｂ、６ａ、６ｂ、７ａ、７ｂ、８ａ、８ｂが固定されることから、シャーシ側からみるとクロスメンバとしての機能も有するため、シャーシの剛性を高めることができる。本形態では取付けメンバ５〜８を４本用いて電池パック２をサイドメンバ９、１０に固定して取付けているが、取付けメンバの数は、本実施形態の数に限定されるものでは無く、電池パック２の平面的な大きさ、重量を考慮して適宜増減するのが好ましい。   Since the mounting members 5 to 8 are horizontally mounted on the side members 9 and 10 and both ends 5a, 5b, 6a, 6b, 7a, 7b, 8a, and 8b are fixed, as viewed from the chassis side, they are used as cross members. Since it also has a function, the rigidity of the chassis can be increased. In this embodiment, the battery pack 2 is fixedly attached to the side members 9 and 10 using four attachment members 5 to 8, but the number of attachment members is not limited to the number of this embodiment. It is preferable to increase or decrease appropriately considering the planar size and weight of the battery pack 2.

本形態において、取付けメンバ５〜８を車両前方側から順番に第１メンバ〜第４メンバとすると、第１メンバ（取付けメンバ５）とサイドメンバ９、サイドメンバ１０との間に、金属製の板状部材１１、１２を配置している。板状部材１１、１２は、図２に示すように、導電性部材で形成されていて露出導電部を構成している。板状部材１１、１２は、図３，図４に示すように、板金加工によりクランク状に屈曲形成されていて、平坦で略水平な一端１１ａ、１２ａと他端１１ｂ、１２ｂの間に、車両前後方向Ａに面し、下方に位置する一端１１ａ、１１ｂから上方に位置する他端１１ｂ、１２ｂに向かって上り傾斜した縦壁１１ｃ、１２ｃを有している。すなわち、板状部材１１、１２には、サイドメンバ９，１０の接続部と取付けメンバ５の接続部との間を車両上下方向に連接する縦壁１１ｃ、１２ｃが形成されている。これら板状部材１１、１２は、一端１１ａ、１２ａが取付けメンバ５の両端にスポット溶接によって接合されて固定され、他端１１ｂ、１２ｂが締結部材となるボルト１３によってそれぞれサイドメンバ９，１０に締結されて固定されている。なお、図３は、車両左側に配置された片側の板状部材１１のみを示す。   In this embodiment, when the mounting members 5 to 8 are first member to fourth member in order from the vehicle front side, a metal member is interposed between the first member (mounting member 5), the side member 9, and the side member 10. Plate members 11 and 12 are arranged. As shown in FIG. 2, the plate-like members 11 and 12 are formed of a conductive member and constitute an exposed conductive portion. As shown in FIGS. 3 and 4, the plate-like members 11 and 12 are bent and formed in a crank shape by sheet metal processing, and between the flat and substantially horizontal one ends 11 a and 12 a and the other ends 11 b and 12 b Facing in the front-rear direction A, it has vertical walls 11c, 12c inclined upward from one end 11a, 11b located below to the other end 11b, 12b located above. That is, the plate-like members 11 and 12 are formed with vertical walls 11c and 12c that connect the connecting portions of the side members 9 and 10 and the connecting portion of the mounting member 5 in the vehicle vertical direction. These plate-like members 11 and 12 have one ends 11a and 12a fixed to each end of the mounting member 5 by spot welding, and the other ends 11b and 12b are fastened to the side members 9 and 10 by bolts 13 serving as fastening members, respectively. Has been fixed. FIG. 3 shows only one plate-like member 11 arranged on the left side of the vehicle.

つまり、電池パック２の外部に露呈した導電部４は、取付けメンバ５、板状部材１１，１２を介してサイドメンバ９，１０に接続されていて、アース経路が確保されている。ここでは、取付けメンバ５とサイドメンバ９、取付けメンバ５とサイドメンバ１０の間に板状部材１１、１２をそれぞれ介在させて連結してアース経路を形成しているが、取付けメンバ５とサイドメンバ９あるいは、取付けメンバ５とサイドメンバ１０の少なくとも一方に板状部材１１または板状部材１２を連結してアース経路を形成しても良い。   In other words, the conductive portion 4 exposed to the outside of the battery pack 2 is connected to the side members 9 and 10 via the mounting member 5 and the plate-like members 11 and 12, and a ground path is secured. Here, plate members 11 and 12 are interposed and connected between the mounting member 5 and the side member 9 and between the mounting member 5 and the side member 10 to form a ground path. 9 or the plate member 11 or the plate member 12 may be connected to at least one of the attachment member 5 and the side member 10 to form a ground path.

板状部材１１、１２は、取付けメンバ５の接続部となる一端１１ａ、１２ａとサイドメンバ９、１０との接続部となる他端１１ｂ、１２ｂを除く部分において、車両前後方向から衝突荷重が加えられたときに車両前後方向Ａに変形するように、部分的に脆弱部となる折れ部１１ｄ、１２ｄと折れ部１１ｅ、１２ｅが形成されている。すなわち、板状部材１１、１２、サイドメンバ９，１０の接続部と取付けメンバ５の接続部との間に、車両１の衝突荷重を吸収する脆弱部が形成されている。   The plate-like members 11 and 12 are subjected to a collision load from the vehicle front-rear direction at the portions excluding the other ends 11b and 12b that are the connecting portions of the mounting members 5 and the other ends 11b and 12b that are the connecting portions of the side members 9 and 10. Folded portions 11d and 12d and folded portions 11e and 12e that are partially fragile portions are formed so as to be deformed in the vehicle longitudinal direction A when being bent. That is, a fragile portion that absorbs the collision load of the vehicle 1 is formed between the connecting portions of the plate-like members 11 and 12 and the side members 9 and 10 and the connecting portion of the mounting member 5.

板状部材１１、１２は、取付けメンバ５よりも車両後方側に配置されている。具体的には、取付けメンバ５との接続部となる板状部材１１、１２の一端１１ａ、１２ｂよりも、車両後方側に位置し、サイドメンバ９，１０との接続部をなす板状部材１１、１２の他端１１ｂ、１２ｂ及び縦壁１１ｃ、１２ｃが、取付けメンバ５よりも車両後方側に配置されている。すなわち、板状部材１１、１２は、取付けメンバ５の車両後方に配置され、かつ車両１の前方視において取付けメンバ５に重なるように配置されている。   The plate-like members 11 and 12 are arranged on the vehicle rear side with respect to the mounting member 5. Specifically, the plate-like member 11 that is located on the vehicle rear side with respect to the ends 11 a and 12 b of the plate-like members 11 and 12 that become the connection portion with the mounting member 5 and that forms the connection portion with the side members 9 and 10. , 12 and the vertical walls 11c, 12c are arranged on the vehicle rear side with respect to the mounting member 5. In other words, the plate-like members 11 and 12 are arranged on the rear side of the mounting member 5 so as to overlap the mounting member 5 when the vehicle 1 is viewed from the front.

また、本形態において、板状部材１１、１２は、サイドメンバ９，１０との接続部となる他端１１ｂ、１２ｂに対して、取付けメンバ５との接続部となる一端１１ａ、１２ａが、図５に示すように、車両１の上面視において車両幅方向Ｗにオフセットされて配置されている。具体的には、他端１１ｂ、１２ｂに対して一端１１ａ、１２ａが車両１の内側に位置するように、板状部材１１、１２を斜めに配置している。無論、板状部材１１、１２の配置としては、他端１１ｂ、１２ｂに対して一端１１ａ、１２ａが車両１の外側に位置するようにしてもよい。   In the present embodiment, the plate-like members 11 and 12 have one ends 11a and 12a serving as connecting portions with the mounting member 5 as opposed to the other ends 11b and 12b serving as connecting portions with the side members 9 and 10, respectively. As shown in FIG. 5, the vehicle 1 is arranged offset in the vehicle width direction W when viewed from above. Specifically, the plate-like members 11 and 12 are arranged obliquely so that the one ends 11a and 12a are located inside the vehicle 1 with respect to the other ends 11b and 12b. Of course, as the arrangement of the plate-like members 11 and 12, the one ends 11a and 12a may be located outside the vehicle 1 with respect to the other ends 11b and 12b.

すなわち、本形態にかかるアース装置は、車両に搭載された電池パック２と、電池パックを車両の前後方向に延びる一対のサイドメンバ９，１０間に支持する取付けメンバ５と、取付けメンバ５とサイドメンバ９，１０とを連結する板状部材１１、１２とを備え、板状部材１１、１２は、取付けメンバ５の車両の後方に配置されて車両の前方視において取付けメンバ５に重なるように配置されている。   That is, the grounding device according to this embodiment includes a battery pack 2 mounted on a vehicle, a mounting member 5 that supports the battery pack between a pair of side members 9 and 10 extending in the front-rear direction of the vehicle, a mounting member 5 and a side Plate members 11 and 12 for connecting the members 9 and 10 are provided, and the plate members 11 and 12 are arranged at the rear of the mounting member 5 so as to overlap the mounting member 5 in a front view of the vehicle. Has been.

このように、電池パック２のケーシング３よりも車両幅方向Ｗに突出し、その一部が電池パックＢの導電部４と接触するとともに、車両前後方向Ａに延在して車両幅方向にそれぞれ位置する導電性のサイドメンバ９，１０に固定される、導電性の取付けメンバ５よりも車両後方側に、取付けメンバ５とサイドメンバ９，１０とに接合される導電性の板状部材１１、１２を、車両１の前方視において取付けメンバ５に重なるように配置したので、露出導電部となる板状部材１１，１２が取付けメンバ５の陰に配置されることとなり、従来のようにカバー部材が無くても走行時の飛び石による損傷を回避することができるとともに海水や泥等も堆積し難くなる。また、従来アースのためのケーブル類で構成されていた露出導電部を金属製の板状部材１１，１２で構成したので、飛び石が当たった場合でも断線のおそれがなくなる。このため、メンテナンス時の作業性を考慮しつつも、良好な絶縁性を確保することができ、乗員や作業者に対して安全な状態を維持することができる。   In this manner, the battery pack 2 protrudes in the vehicle width direction W from the casing 3 of the battery pack 2, and a part thereof contacts the conductive portion 4 of the battery pack B, and extends in the vehicle front-rear direction A and is positioned in the vehicle width direction. Conductive plate members 11, 12 that are fixed to the conductive side members 9, 10 and that are joined to the mounting member 5 and the side members 9, 10 on the vehicle rear side of the conductive mounting member 5. Is disposed so as to overlap the mounting member 5 when viewed from the front of the vehicle 1, the plate-like members 11 and 12 serving as the exposed conductive portions are disposed behind the mounting member 5. Even without it, it is possible to avoid damage caused by stepping stones during traveling, and it is difficult to deposit seawater and mud. In addition, since the exposed conductive portion, which has conventionally been constituted by cables for grounding, is constituted by the metal plate-like members 11 and 12, there is no possibility of disconnection even when a stepping stone hits. For this reason, while considering the workability at the time of maintenance, favorable insulation can be ensured, and a safe state for the occupants and workers can be maintained.

板状部材１１，１２に、車両前後方向Ａから衝突荷重が加えられたときに同方向に変形するように、部分的に脆弱部となる折れ部１１ｄ、１１ｅと折れ部１２ｄ、１２ｅをそれぞれ形成したので、電池パック２とシャーシとなるサイドメンバ９，１０との間に相対変位が生じた場合でも、折れ部１１ｄ、１１ｅと折れ部１２ｄ、１２ｅの変形により吸収することができるため、衝突後においても良好な絶縁性を維持することができる。   Folded portions 11d and 11e and folded portions 12d and 12e that are partially fragile portions are formed on the plate-like members 11 and 12 so as to be deformed in the same direction when a collision load is applied from the vehicle longitudinal direction A. Therefore, even when a relative displacement occurs between the battery pack 2 and the side members 9 and 10 serving as the chassis, it can be absorbed by deformation of the folded portions 11d and 11e and the folded portions 12d and 12e. In this case, good insulation can be maintained.

本形態では、１つの取付けメンバ５に対して複数の板状部材１１，１２を接続し、各板状部材１１，１２を車両幅方向に位置するサイドメンバ９，１０と接続したので、例えば車両１の左方から衝突荷重を受けて、一方の板状部材１１が破損して片側のアース経路が絶たれた場合でも、衝突方向と反対側に位置する板状部材１２により、導電部４、取付けメンバ５からサイドメンバ１０に掛けてのアース経路を維持することができるので、事故車両等からの救出者に対しても電気的な安全を確保することができる。   In this embodiment, a plurality of plate-like members 11, 12 are connected to one mounting member 5, and each plate-like member 11, 12 is connected to the side members 9, 10 positioned in the vehicle width direction. 1, even when one plate-like member 11 is damaged and the ground path on one side is cut off, the plate-like member 12 located on the opposite side of the collision direction causes the conductive portion 4, Since the ground path from the mounting member 5 to the side member 10 can be maintained, electrical safety can be ensured even for rescuers from accident vehicles and the like.

板状部材１１，１２のサイドメンバ９，１０との接続部（他端１１ｂ、１２ｂ）に対して、板状部材１１，１２の取付けメンバ５との接続部（一端１１ａ、１２ａ）を車両１の上面視において車両幅方向Wにオフセットして配置したので、車両前後方向Ａから衝突荷重が加えられたときに、オフセットしない場合に比べて、板状部材１１，１２が突っ張ることがなく変形しやすくなり、突っ張ることによる板状部材１１，１２の破断を抑制でき、よりアース経路を確保して良好な絶縁性を維持することができる。   The connection portion (one end 11a, 12a) of the plate member 11, 12 to the attachment member 5 is connected to the connection portion (the other end 11b, 12b) of the plate member 11, 12 to the side member 9, 10, in the vehicle 1. When the collision load is applied from the vehicle front-rear direction A, the plate-like members 11 and 12 are deformed without stretching compared to the case where the offset is not offset. It becomes easy to suppress breakage of the plate-like members 11 and 12 due to stretching, and it is possible to secure a ground path and maintain good insulation.

図６は、板状部材１１，１２の縦壁１１ｃ、１２ｃに、車両前後方向Ａに貫通する開口１５，１６を形成したものである。この開口１５，１６の下端１５ａ、１６ａは、一端１１ａ、１２ａの上面まで延びるように形成されている。このため、車両走行中に海水や泥等が堆積しても、開口１５，１６から落下させることができるので、耐腐食性も良好となる。   In FIG. 6, openings 15 and 16 penetrating in the longitudinal direction A of the vehicle are formed in the vertical walls 11c and 12c of the plate-like members 11 and 12, respectively. The lower ends 15a and 16a of the openings 15 and 16 are formed to extend to the upper surfaces of the ends 11a and 12a. For this reason, even if seawater, mud, or the like accumulates during traveling of the vehicle, it can be dropped from the openings 15 and 16, and therefore the corrosion resistance is also good.

板状部材１１，１２では、一端１１ａ、１２ａと取付けメンバ５との接続部を１箇所としたが、図７に示す導電性部材で金属製の板状部材１１０，１２０では、図８に示すように、取付けメンバ５との接続部が複数となるように一端１１０ａ、１１０ｂを二股状に形成し、別れた先端１１０ａ１，１１０ａ２及び先端１２０ａ１，１２０ａ２が車両幅方向Ｗに位置するように配置して、図９に示すように取付けメンバ５に各先端をスポット溶接して固定した。図9は板状部材１１０側の取付け状態を示す。   In the plate-like members 11 and 12, the connecting portion between the one end 11a and 12a and the mounting member 5 is one place. However, the conductive plate-like members 110 and 120 shown in FIG. As described above, the ends 110a and 110b are formed in a bifurcated shape so that there are a plurality of connecting portions with the mounting member 5, and the separated tips 110a1 and 110a2 and tips 120a1 and 120a2 are arranged in the vehicle width direction W. Then, as shown in FIG. 9, each tip was fixed to the mounting member 5 by spot welding. FIG. 9 shows a state of attachment on the plate-like member 110 side.

板状部材１１０，１２０の他端１１０ｂ、１２０ｂは、図７に示すように、サイドメンバ９，１０にボルト１３で締結して固定される。無論これら板状部材１１０，１２０に関しても、板状部材１１，１２同様の機能を有するべく、図８に示すように、縦壁１１０ｃ、１２０ｃと、部分的に脆弱部となる折れ部１１０ｄ、１１０ｅと折れ部１２０ｄ、１２０ｅとをそれぞれ形成している。この板状部材１１０，１２０も取付けメンバ５よりも車両後方側に、少なくとも折れ部１１０ｄ、１１０ｅ、１２０ｄ、１２０ｅと、縦部１１０ｃ、１２０ｃ及び他端１１０ｂ、１２０ｂを配置して、かつ、車両１の前方視において取付けメンバ５に重なるように配置している。   The other ends 110b and 120b of the plate-like members 110 and 120 are fastened and fixed to the side members 9 and 10 with bolts 13 as shown in FIG. Of course, these plate-like members 110 and 120 also have the same functions as the plate-like members 11 and 12, as shown in FIG. And bend portions 120d and 120e, respectively. The plate-like members 110 and 120 also have at least the bent portions 110d, 110e, 120d, and 120e, the vertical portions 110c and 120c, and the other ends 110b and 120b arranged on the vehicle rear side of the mounting member 5, and the vehicle 1 Is arranged so as to overlap with the mounting member 5 in a front view of FIG.

すなわち、本形態にかかるアース装置は、車両に搭載された電池パック２と、電池パックを車両の前後方向に延びる一対のサイドメンバ９，１０間に支持する取付けメンバ５と、取付けメンバ５とサイドメンバ９，１０とを連結する板状部材１１０，１２０とを備え、板状部材１１０，１２０は、取付けメンバ５の車両の後方に配置されて車両の前方視において取付けメンバ５に重なるように配置されている。   That is, the grounding device according to this embodiment includes a battery pack 2 mounted on a vehicle, a mounting member 5 that supports the battery pack between a pair of side members 9 and 10 extending in the front-rear direction of the vehicle, a mounting member 5 and a side Plate-like members 110 and 120 for connecting the members 9 and 10 to each other, and the plate-like members 110 and 120 are arranged at the rear of the mounting member 5 so as to overlap the mounting member 5 in a front view of the vehicle. Has been.

このように、導電性の取付けメンバ５よりも車両後方側に、取付けメンバ５とサイドメンバ９，１０とに接合（接続）される導電性の板状部材１１０，１２０を、車両１の前方視において取付けメンバ５に重なるように配置することで、露出導電部となる板状部材１１０，１２０が取付けメンバ５の陰に配置されることとなり、従来のようにカバー部材が無くても走行時の飛び石による損傷を回避することができるとともに、塩水や泥等も堆積し難くなる。また、従来ケーブル類で構成されていた露出導電部を金属製の板状部材１１０，１２０で構成したので、飛び石が当たった場合でも断線のおそれがなくなる。このため、メンテナンス時の作業性を考慮しつつも、良好な絶縁性を確保することができ、乗員や作業者に対して安全な状態を維持することができる。   As described above, the conductive plate-like members 110 and 120 joined (connected) to the mounting member 5 and the side members 9 and 10 on the rear side of the vehicle with respect to the conductive mounting member 5 are viewed from the front of the vehicle 1. In this case, the plate-like members 110 and 120 serving as the exposed conductive portions are arranged behind the mounting member 5 so as to overlap the mounting member 5. Damage from stepping stones can be avoided and salt water and mud are less likely to accumulate. In addition, since the exposed conductive portion, which has conventionally been configured with cables, is configured with the metal plate-like members 110, 120, there is no risk of disconnection even when a stepping stone hits. For this reason, while considering the workability at the time of maintenance, favorable insulation can be ensured, and a safe state for the occupants and workers can be maintained.

板状部材１１０，１２０に、車両前後方向Ａから衝突荷重が加えられたときに同方向に変形するように、すなわち、車両１の衝突荷重を吸収する部分的に脆弱部となる折れ部１１０ｄ、１１０ｅと折れ部１２０ｄ、１２０ｅを形成したので、電池パック２とシャーシとなるサイドメンバ９，１０との間に相対変位が生じた場合でも、折れ部１１０ｄ、１１０ｅと折れ部１２０ｄ、１２０ｅの変形により吸収することができるので、良好な絶縁性を維持することができる。   The plate-like members 110 and 120 are deformed in the same direction when a collision load is applied from the vehicle longitudinal direction A, that is, a folded portion 110d that partially becomes a weak portion that absorbs the collision load of the vehicle 1; 110e and the folded portions 120d and 120e are formed, so that even when a relative displacement occurs between the battery pack 2 and the side members 9 and 10 serving as the chassis, the folded portions 110d and 110e and the folded portions 120d and 120e are deformed. Since it can be absorbed, good insulation can be maintained.

１つの取付けメンバ５に対して複数の板状部材１１０，１２０を接合し、各板状部材１１０，１２０を車両１の上面視において車両幅方向Ｗに位置するサイドメンバ９，１０と接合したので、例えば車両１の左方から衝突荷重を受けて、一方の板状部材１１０が破損して片側のアース経路が絶たれた場合でも、衝突方向と反対側に位置する板状部材１２０により、導電部４、取付けメンバ５からサイドメンバ１０に掛けてのアース経路を維持することができるので、事故車両からの救出者に対しても電気的な安全を確保することができる。   Since a plurality of plate-like members 110 and 120 are joined to one mounting member 5, each of the plate-like members 110 and 120 is joined to the side members 9 and 10 located in the vehicle width direction W in the top view of the vehicle 1. For example, even if one plate-like member 110 is damaged due to a collision load from the left side of the vehicle 1 and the ground path on one side is cut off, the plate-like member 120 located on the opposite side to the collision direction can conduct electricity. Since the ground path from the part 4 and the mounting member 5 to the side member 10 can be maintained, electrical safety can be ensured even for rescuers from accident vehicles.

板状部材１１０，１２０では、取付けメンバ５との接続部（一端１１０ａ、１２０ａ）を二股に形成し、別れた先端１１０ａ１，１１０ａ２及び１２０ａ１，１２０ａ２をそれぞれ取付けメンバ５にスポット溶接して固定したので、取付けメンバ５との接合強度が高められるとともに、スポット溶接不良による接合不良を低減することができ、より安定してアース経路を維持して良好な絶縁性を維持することができる。   In the plate-like members 110 and 120, the connection portions (one ends 110 a and 120 a) with the mounting member 5 are formed in two forks, and the separate tips 110 a 1, 110 a 2 and 120 a 1 and 120 a 2 are fixed to the mounting member 5 by spot welding. Further, the bonding strength with the mounting member 5 can be increased, the bonding failure due to the spot welding failure can be reduced, and the ground path can be maintained more stably and the good insulation can be maintained.

図１０は、車両１の前輪２０による飛び石と、例えば板状部材１１，１２との位置関係を示すものである。無論板状部材１１，１２ではなく板状部材１１０，１２０であってもよい。図中、車両１が前進走行しているものとすると、車輪２０は反時計回りに回転する。このとき、小石などを前輪２０が踏んでしまうと、符号Ｘで示す軌道で小石が後方に飛ばされたものとする。飛び石の軌道Ｘよりも車両後方側に位置する取付けメンバ６，７，８においては、飛び石の飛んでくる範囲に位置することになり、これら取付けメンバよりも車両後方側に板状部材１１，１２あるいは板状部材１１０，１２０を、車両１の前方視においてこれら取付けメンバに重なるように配置すると、各取付けメンバの陰にはなるが、飛び石がぶつかってしまうおそれが高い
しかし、飛び石の軌道Ｘよりも車両前方側に位置する取付けメンバ５においては、飛び石の飛んでくる範囲外に位置することになるので、取付けメンバ５よりも車両後方側に板状部材１１，１２や板状部材１１０，１２０を、車両１の前方視において取付けメンバ５に重なるように配置しても飛び石とぶつかうおそれは格段に低くなることから、本形態では、複数の取付けメンバのうち、飛び石の軌道Ｘよりも車両前方側に位置する取付けメンバ５の車両後方側で、車両１の前方視において取付けメンバ５に重なるように板状部材１１，１２や板状部材１１０，１２０を配置するようにした。 FIG. 10 shows the positional relationship between the stepping stone by the front wheel 20 of the vehicle 1 and, for example, the plate-like members 11 and 12. Of course, the plate-like members 110 and 120 may be used instead of the plate-like members 11 and 12. In the figure, assuming that the vehicle 1 is traveling forward, the wheel 20 rotates counterclockwise. At this time, if the front wheel 20 steps on the pebbles or the like, it is assumed that the pebbles are thrown back in the trajectory indicated by the symbol X. The mounting members 6, 7, 8 located on the vehicle rear side of the stepping stone track X are positioned in the range where the stepping stones fly, and the plate-like members 11, 12 on the vehicle rear side of these mounting members. Alternatively, when the plate-like members 110 and 120 are arranged so as to overlap these mounting members when viewed from the front of the vehicle 1, there is a high possibility that the stepping stones will collide, although they are behind the respective mounting members. Since the mounting member 5 located on the front side of the vehicle is located outside the range where the stepping stones fly, the plate-like members 11 and 12 and the plate-like members 110 and 120 are located on the vehicle rear side of the mounting member 5. Since the risk of hitting a stepping stone is greatly reduced even if it is arranged so as to overlap the mounting member 5 in the front view of the vehicle 1, Of the mounting members, the plate-like members 11 and 12 and the plate-like member 110 are arranged on the vehicle rear side of the mounting member 5 located on the vehicle front side of the stepping stone track X so as to overlap the mounting member 5 in the front view of the vehicle 1. 120 are arranged.

飛び石の軌道Ｘは、前輪２０の外形や回転速度によっても変化するため、最も車両前方側となる飛び石の軌道Ｘを観察あるいはコンピュータ等のシミュレーションにより想定し、想定した最前の軌道Ｘよりも車両前方側に少なくとも各板状部材を配置するのが好ましく、より板状部材と飛び石との干渉を防ぐためには、想定した最前の軌道Ｘよりも車両前方側に少なくとも１つの取付けメンバを配置し、その取付けメンバよりも車両後方側に、車両１の前方視において当該取付けメンバに重なるように各板状部材を配置するのが好ましと言える。   Since the stepping stone trajectory X also changes depending on the outer shape and rotational speed of the front wheel 20, the stepping stone trajectory X that is closest to the front of the vehicle is assumed by observation or computer simulation, and the vehicle is ahead of the assumed earliest trajectory X. It is preferable to dispose at least each plate-like member on the side, and in order to prevent interference between the plate-like member and the stepping stone, at least one mounting member is arranged on the vehicle front side with respect to the most anticipated track X. It can be said that it is preferable to dispose each plate-like member on the vehicle rear side of the mounting member so as to overlap the mounting member in a front view of the vehicle 1.

２ 電池パック
３ ケーシング
４ 導電部
５〜８ 支持部材（取付けメンバ）
９，１０ サイドメンバ
１１，１２、１１０，１２０ 導電性部材（板状部材）
１１（ａ、ｂ）、１２（ａ、ｂ） 板状部材の両端
１１０（ａ、ｂ）、１２０（ａ、ｂ） 板状部材の両端
１１ｂ、１２ｂ、１１０ｂ、１２０ｂ サイドメンバとの接続部
１１ａ、１２ａ、１１０ａ、１２０ａ 取付けメンバとの接続部
１１（ｄ、ｅ）、１２（ｄ、ｅ） 脆弱部
１１０（ｄ、ｅ）、１２０（ｄ、ｅ） 脆弱部
１１ｃ、１２ｃ、１１０ｃ、１２０ｃ 縦壁
１５，１６ 開口
３０ 複数のバッテリーセル
Ａ 車両前後方向
Ｗ 車両幅方向 2 Battery pack 3 Casing 4 Conductive part 5-8 Support member (mounting member)
9, 10 Side member 11, 12, 110, 120 Conductive member (plate-like member)
11 (a, b), 12 (a, b) Both ends of plate-like member 110 (a, b), 120 (a, b) Both ends of plate-like member 11b, 12b, 110b, 120b Connection portion with side member 11a , 12a, 110a, 120a Connection part with mounting member 11 (d, e), 12 (d, e) Weak part 110 (d, e), 120 (d, e) Weak part 11c, 12c, 110c, 120c Vertical Walls 15, 16 Opening 30 Multiple battery cells A Vehicle longitudinal direction W Vehicle width direction

Claims (6)

車両に搭載された電池パックと、
前記電池パックを前記車両の前後方向に延びる一対のサイドメンバ間に支持する支持部材と、
前記支持部材と前記サイドメンバとを連結する導電性部材とを備え、
前記導電性部材は、前記支持部材の前記車両の後方に配置されて前記車両の前方視において前記支持部材に重なるように配置される
ことを特徴とする車両のアース装置。 A battery pack mounted on the vehicle;
A support member for supporting the battery pack between a pair of side members extending in the front-rear direction of the vehicle;
A conductive member that connects the support member and the side member;
The grounding device for a vehicle, wherein the conductive member is disposed behind the vehicle with respect to the support member so as to overlap the support member in a front view of the vehicle. 前記導電性部材と接続される前記支持部材又は前記サイドメンバのうち一方は締結部材により締結され、他方は溶接により接合されることを特徴とする請求項１記載の車両のアース装置。   The vehicle grounding device according to claim 1, wherein one of the support member and the side member connected to the conductive member is fastened by a fastening member, and the other is joined by welding. 前記導電性部材は、前記車両の上面視において前記サイドメンバとの接続部と、前記支持部材との接続部とが車両幅方向にオフセットされていることを特徴とする請求項１または２記載の車両のアース装置。   3. The conductive member according to claim 1, wherein a connection portion with the side member and a connection portion with the support member are offset in the vehicle width direction in a top view of the vehicle. Vehicle grounding device. 前記導電性部材は、前記サイドメンバの接続部と前記支持部材の接続部との間に、車両の衝突荷重を吸収する脆弱部が形成されていることを特徴とする請求項１，２または３記載の車両のアース装置。   The fragile portion for absorbing a collision load of a vehicle is formed between the connecting portion of the side member and the connecting portion of the support member in the conductive member. The vehicle grounding device described. 前記導電性部材は、前記サイドメンバの接続部と前記支持部材の接続部との間を前記車両上下方向に連接する縦壁が形成されていて、当該縦壁に車両前後方向に貫通する開口が形成されていることを特徴とする請求項１ないし４の何れか１項に記載の車両のアース装置。   The conductive member is formed with a vertical wall connecting the connecting portion of the side member and the connecting portion of the support member in the vehicle vertical direction, and an opening penetrating in the vehicle longitudinal direction is formed in the vertical wall. The vehicle grounding device according to any one of claims 1 to 4, wherein the vehicle grounding device is formed. 前記導電性部材は、前記支持部材との接続部を複数箇所有することを特徴とする請求項１ないし５の何れか１項に記載の車両のアース装置。   The vehicle ground device according to claim 1, wherein the conductive member has a plurality of connecting portions with the support member.
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