JP2007118796A - Vehicle structure for mounting battery - Google Patents

Vehicle structure for mounting battery Download PDF

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Publication number
JP2007118796A
JP2007118796A JP2005314274A JP2005314274A JP2007118796A JP 2007118796 A JP2007118796 A JP 2007118796A JP 2005314274 A JP2005314274 A JP 2005314274A JP 2005314274 A JP2005314274 A JP 2005314274A JP 2007118796 A JP2007118796 A JP 2007118796A
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vehicle
battery
assembled battery
floor panel
behind
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JP4810971B2 (en
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Tatsuya Tono
龍也 東野
Tsuyoshi Kokubo
毅之 小久保
Satoshi Muramatsu
聡 村松
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • 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

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  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure for pack battery of a vehicle capable of minimizing the space in a luggage room behind the rear seat used solely for movement of the pack battery in order to prevent the pack battery from being damaged when a shock is applied from behind the vehicle. <P>SOLUTION: The pack battery 1 installed on the surface 7b of a floor panel 7 to be solely devoted to installation of battery moves to ahead of the vehicle when an impact load is applied thereto from behind the vehicle, and at this time, the battery fixing condition to the floor panel 7 is released, and a rotation guide 19 abuts on a rotary shaft 17 installed on the floor panel 7 side, resulting in rotation around the rotary shaft 17 so that the rear part moves over to absorb the impact. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両の後部座席より後方のフロアパネル上に電池を搭載した電池車載構造に関する。   The present invention relates to a battery-mounted structure in which a battery is mounted on a floor panel behind a rear seat of a vehicle.

従来より、ハイブリッド車両の駆動電源や燃料電池車両の補助電源として、複数の電池を接続してなる組電池を搭載した車両が知られている。このような車両においては、電池の小型化に伴い、後部座席後方のラゲッジルームに組電池を搭載することが一般的となっている。   2. Description of the Related Art Conventionally, vehicles equipped with assembled batteries formed by connecting a plurality of batteries are known as driving power sources for hybrid vehicles and auxiliary power sources for fuel cell vehicles. In such a vehicle, with the miniaturization of the battery, it is common to mount the assembled battery in a luggage room behind the rear seat.

ところで、このように組電池を車両のラゲッジルームに搭載した場合には、組電池が、追突や車両後退時の衝突により車両後方から衝撃を受けた際に、損傷を防止する構造とする必要があるが、この場合、組電池よりも車両後方に配置したスペアタイヤなどが、組電池に干渉して衝撃荷重が入力した際に、組電池を移動可能とすることが好ましい。   By the way, when the assembled battery is mounted in the luggage room of the vehicle in this way, it is necessary to have a structure that prevents damage when the assembled battery receives an impact from the rear of the vehicle due to a collision at the time of rear-end collision or reverse of the vehicle. However, in this case, it is preferable that a spare tire or the like disposed behind the vehicle with respect to the assembled battery can move the assembled battery when an impact load is input due to interference with the assembled battery.

そこで、例えば下記特許文献１には、組電池が、車両後方から衝撃を受けた際に、車両最前方下部を中心に、後端側が上方に移動するよう回転させることで、組電池に作用する衝撃を抑え組電池の損傷を防止する点が記載されている。
特開２００４−２６５８３９号公報 Therefore, for example, in Patent Document 1 below, when an assembled battery receives an impact from the rear of the vehicle, the assembled battery acts on the assembled battery by rotating it so that the rear end side moves upward around the lowermost front part of the vehicle. The point which suppresses an impact and prevents damage to an assembled battery is described.
JP 2004-265839 A

ところが、上記したように後部座席後方のラゲッジルームに搭載した組電池を、車両最前方下部を中心に回転させようとした場合には、後部座席の背面側において、組電池が回転するスペースを大きく確保する必要があり、後部座席後方のラゲッジルームの組電池回転のための犠牲になるスペースが大きくなるという問題がある
そこで、本発明は、車両後方から衝撃を受けた際の電池の損傷を防止する際に、後部座席後方のラゲッジルームの電池移動のための犠牲になるスペースを極力小さくすることを目的としている。 However, when the assembled battery mounted in the luggage room behind the rear seat as described above is to be rotated around the lowermost front part of the vehicle, the space for the assembled battery to rotate is increased on the rear side of the rear seat. Therefore, there is a problem that the space that is sacrificed for rotation of the assembled battery in the luggage room behind the rear seat becomes large. Therefore, the present invention prevents the battery from being damaged when subjected to an impact from the rear of the vehicle. In doing so, the object is to minimize the sacrificial space for battery movement in the luggage room behind the rear seat.

本発明は、車両の後部座席より後方のフロアパネル上に電池を搭載した電池車載構造において、車両後方からの衝撃荷重によって、前記電池を、その車両前後方向最前端より後方でかつ下部における車幅方向に平行な回転軸を中心として回転させることを最も主要な特徴とする。   The present invention relates to a battery-mounted structure in which a battery is mounted on a floor panel behind a rear seat of a vehicle, and the battery is placed behind the vehicle front-rear direction front end and at the lower part of the vehicle by an impact load from the rear of the vehicle. The most important feature is to rotate about a rotation axis parallel to the direction.

本発明によれば、車両後方からの衝撃荷重によって、電池を、その車両前後方向最前端より後方下部における車幅方向に平行な回転軸を中心として回転させるようにしたため、電池を、その車両前後方向最前方下部を中心として回転させる場合に比較して、電池が回転するためのスペースが小さくて済み、車両後方から衝撃を受けた際の電池の損傷を防止する際に、後部座席後方のラゲッジルームの電池移動のための犠牲になるスペースを小さく抑えることができる。   According to the present invention, the battery is rotated around the rotation axis parallel to the vehicle width direction at the rear lower part from the front end in the vehicle front-rear direction by the impact load from the rear of the vehicle. Compared to the case where the battery is rotated around the foremost lower part of the direction, the space for the battery to rotate is small, and when the vehicle receives an impact from the rear of the vehicle, the luggage behind the rear seat can be prevented. The sacrificial space for moving the battery in the room can be kept small.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の一実施形態に係わる電池車載構造を示す側面図、図２は、同斜視図である。なお、図１，図２中の矢印ＦＲで示す方向が、車両前方である。   FIG. 1 is a side view showing a battery mounting structure according to an embodiment of the present invention, and FIG. 2 is a perspective view thereof. In addition, the direction shown by the arrow FR in FIG. 1, FIG. 2 is a vehicle front.

ハイブリッド車両の駆動源や、燃料電池車両の補助電源として、複数の電池を接続して構成した組電池１は、扁平な直方体状に形成してあり、平面視で矩形状の取付パネル３上に、図示しないボルトなどにより固定してある。この取付パネル３は、車両の後部座席５（図２では省略）より後方のフロアパネル７上に取り付けてあり、フロアパネル７は、車両後部の両側部で車両前後方向に延設したサイドメンバ９および、左右のサイドメンバ９相互間に架設した車幅方向に延びるクロスメンバ１１上に固定している。   An assembled battery 1 configured by connecting a plurality of batteries as a drive source for a hybrid vehicle or an auxiliary power source for a fuel cell vehicle is formed in a flat rectangular parallelepiped shape and is mounted on a rectangular mounting panel 3 in plan view. These are fixed with bolts (not shown). This mounting panel 3 is mounted on a floor panel 7 behind a rear seat 5 (not shown in FIG. 2) of the vehicle, and the floor panel 7 is a side member 9 extending in the vehicle front-rear direction on both sides of the rear of the vehicle. And it fixes on the cross member 11 extended between the left and right side members 9 and extending in the vehicle width direction.

上記したフロアパネル７は、後部座席５を設置する座席設置面７ａに対し、組電池１を設置する電池設置面７ｂが、傾斜面７ｃを境にして上方に位置しており、この電池設置面７ｂ上に、組電池１を、車両前端側のほぼ半分が傾斜面７ｃ側に突出するよう設置している。このため、組電池１の車両前方側と傾斜面７ｃとの間に空間１２が形成されている。   In the floor panel 7 described above, the battery installation surface 7b on which the assembled battery 1 is installed is located above the seat installation surface 7a on which the rear seat 5 is installed, with the inclined surface 7c as a boundary. The assembled battery 1 is installed on 7b so that almost half of the front end side of the vehicle protrudes toward the inclined surface 7c. For this reason, the space 12 is formed between the vehicle front side of the assembled battery 1 and the inclined surface 7c.

組電池１を取り付ける前記した取付パネル３は、車両前後方向後端側の車幅方向両側に、図２の要部を拡大した図３に示すように、後方から切り欠いた車両前後方向に長い長孔形状の後方取付孔３ａを形成している。この後方取付孔３ａに上方から挿入したボルト１３をフロアパネル７側に締結固定する。   The above-described mounting panel 3 for mounting the assembled battery 1 is long in the vehicle front-rear direction cut out from the rear as shown in FIG. 3 in which the main part of FIG. 2 is enlarged on both sides in the vehicle width direction on the rear end side in the vehicle front-rear direction. A long hole-shaped rear mounting hole 3a is formed. The bolt 13 inserted from above into the rear mounting hole 3a is fastened and fixed to the floor panel 7 side.

また、取付パネル３は、車幅方向両側の傾斜面７ｃ近傍における電池設置面７ｂに対応する位置に、車両前後方向に長い長孔形状の前方取付孔３ｂを設けている。この前方取付孔３ｂは、車両前方側の長孔部３ｃと、車両方向側の大径部３ｄとが互いに連続しており、長孔部３ｃにてボルト１５により取付パネル３をフロアパネル７側に締結固定する。また、大径部３ｄの外径は、ボルト１５の頭部の外径より充分大きく形成している。   The mounting panel 3 is provided with a front mounting hole 3b having a long hole shape in the vehicle front-rear direction at a position corresponding to the battery installation surface 7b in the vicinity of the inclined surface 7c on both sides in the vehicle width direction. In the front mounting hole 3b, a long hole portion 3c on the vehicle front side and a large diameter portion 3d on the vehicle direction side are continuous with each other, and the mounting panel 3 is connected to the floor panel 7 side by a bolt 15 in the long hole portion 3c. Fasten and fix to. Further, the outer diameter of the large diameter portion 3d is formed sufficiently larger than the outer diameter of the head of the bolt 15.

なお、前記したボルト１３，１５の締め付けトルクは、後述するように、組電池１が車両後方から衝撃荷重を受けたときに、取付パネル３が車両前方へ移動して外れるように設定しておく。   The tightening torque of the bolts 13 and 15 is set so that the mounting panel 3 moves to the front of the vehicle and comes off when the assembled battery 1 receives an impact load from the rear of the vehicle, as will be described later. .

また、フロアパネル７における傾斜面７ｃと電池設置面７ｂとの境界部分には、組電池１が車両後方から衝撃を受けた際に、組電池１を、図１の状態から後述する図４の状態を経て図６の状態となるよう回転させる回転軸１７が、車幅方向に延長して設けられている。そして、この回転軸１７の車両後方側近傍における取付パネル３の下面には、回転軸１７側が凹状となるほぼ半円筒形状の回転ガイド１９を設けている。   Further, at the boundary portion between the inclined surface 7c and the battery installation surface 7b in the floor panel 7, when the assembled battery 1 receives an impact from the rear of the vehicle, the assembled battery 1 is changed from the state of FIG. A rotating shaft 17 that rotates so as to be in the state of FIG. 6 through the state is provided extending in the vehicle width direction. A rotation guide 19 having a substantially semi-cylindrical shape having a concave shape on the rotation shaft 17 side is provided on the lower surface of the mounting panel 3 in the vicinity of the vehicle rear side of the rotation shaft 17.

なお、上記した回転ガイド１９と回転軸１７との間は、組電池１が車両前方に移動したときに回転ガイド１９も移動できるように、電池設置面７ｂに開口を設けている。また、ここでの組電池１が図４のように車両前方に移動したときの回転軸１７の車両前後方向位置は、組電池１の重心Ｇの同方向位置と一致しているものとする。   Note that an opening is provided on the battery installation surface 7b between the rotation guide 19 and the rotation shaft 17 so that the rotation guide 19 can also move when the assembled battery 1 moves forward of the vehicle. Further, it is assumed that the vehicle longitudinal direction position of the rotating shaft 17 when the assembled battery 1 here moves forward as shown in FIG. 4 coincides with the same direction position of the center of gravity G of the assembled battery 1.

次に作用を説明する。車両の後方衝突などにより、組電池１が車両後方から衝撃を受けた際には、組電池１は、取付パネル３とともに、図１の状態からフロアパネル７の電池設置面７ｂに対して車両前方へ移動し、図４に示すように回転ガイド１９が回転軸１７に当接して係止した状態となる。   Next, the operation will be described. When the assembled battery 1 receives an impact from the rear of the vehicle due to a vehicle rearward collision or the like, the assembled battery 1 together with the mounting panel 3 from the state of FIG. As shown in FIG. 4, the rotation guide 19 comes into contact with the rotation shaft 17 and is locked.

このとき、各ボルト１３，１５は前記設定した締め付けトルクによる締結状態が解除され、図５に示すように、ボルト１３が長孔３ａから外れると同時に、ボルト１５が、長孔３ｂの長孔部３ｃから大径部３ｄ内まで移動する。この際、組電池１は、車両前方に移動し、その重心Ｇも前方に移動して回転軸１７とほぼ同等位置となる。   At this time, the bolts 13 and 15 are released from the fastening state by the set tightening torque, and as shown in FIG. 5, the bolts 15 are removed from the long holes 3a and at the same time, the bolts 15 are the long hole portions of the long holes 3b. It moves from 3c into the large diameter portion 3d. At this time, the assembled battery 1 moves to the front of the vehicle, and its center of gravity G also moves to the front, so that it is in a position substantially equivalent to the rotating shaft 17.

ここで、組電池１は、その車両前方下部が空間１２となっているので、さらに後方から荷重を受けることで、回転ガイド１９によりガイドされつつ回転軸１７を中心として、車両前端側が空間１２に向けて下方に沈み込みつつ車両後方側が上方となるよう回転し、取付パネル３の前方側の下面がフロアパネル７の傾斜面７ｃに当接する図６の状態となる。   Here, since the assembled battery 1 has a space 12 at the front lower part of the vehicle, by receiving a load from the rear, the front end side of the vehicle is centered on the rotation shaft 17 while being guided by the rotation guide 19. 6, the vehicle is rotated so that the rear side of the vehicle is upward while sinking downward, and the lower surface of the front side of the mounting panel 3 comes into contact with the inclined surface 7 c of the floor panel 7.

このように、組電池１は、車両後方から衝撃荷重を受けた際に、車両前方へスライド移動した後、前方側が下方の空間１２に沈み込むように回転することで、上記衝撃荷重を緩和して損傷を防止することができる。   As described above, when the assembled battery 1 receives an impact load from the rear of the vehicle, the assembled battery 1 is slid to the front of the vehicle and then rotated so that the front side sinks into the space 12 below, thereby reducing the impact load. Damage can be prevented.

そして、このとき回転する組電池１は、回転中心が、車両前後方向最前端より後方でかつ下部における車幅方向に平行な回転軸１７としているので、車両前後方向最前端を中心として大きく回転させる場合に比較して、組電池１が回転するためのスペースが小さくて済み、車両後方から衝撃を受けた際の組電池１の損傷を防止する際に、後部座席後方のラゲッジルームにおける組電池移動（回転）のための犠牲になるスペースを小さく抑えることができる。   The assembled battery 1 that rotates at this time has the rotation center as the rotation shaft 17 that is behind the vehicle front-rear direction front end and parallel to the vehicle width direction at the lower part, and thus is largely rotated around the vehicle front-rear direction front end. Compared to the case, the space for the assembled battery 1 to rotate is small, and the assembled battery is moved in the luggage room behind the rear seat when the assembled battery 1 is prevented from being damaged when subjected to an impact from the rear of the vehicle. The sacrificial space for (rotation) can be kept small.

なお、組電池１は、回転する前に車両前方へスライド移動するが、この移動量は、ボルト１３，１５がそれぞれ対応する取付孔３ａ，３ｂから外れる位置までの僅かなものであるので、この移動による後部座席５の後方のラゲッジスペースの犠牲が問題となることはない。   The assembled battery 1 slides and moves forward of the vehicle before it rotates, but this amount of movement is slight until the bolts 13 and 15 are disengaged from the corresponding mounting holes 3a and 3b. The sacrifice of the luggage space behind the rear seat 5 due to movement does not become a problem.

また、回転軸１７の組電池１が回転するときの車両前後方向位置は、組電池１の重心Ｇと同等位置に限るものではなく、組電池１の重心Ｇと車両前後方向後端部との間であってもよい。このように、回転軸１７の組電池１が回転するときの車両前後方向位置を、組電池１の重心Ｇを含みこの重心Ｇと車両前後方向後端部との間に設定することで、組電池１は、前方側が下部の空間１２に向けて自重により落ち込みやすくなることから、上記した回転動作が容易になされ、衝撃吸収効果がより高まるものとなる。   Further, the position in the vehicle front-rear direction when the assembled battery 1 of the rotating shaft 17 rotates is not limited to the position equivalent to the center of gravity G of the assembled battery 1, and the position between the center of gravity G of the assembled battery 1 and the rear end in the vehicle front-rear direction. It may be between. As described above, the vehicle longitudinal direction position when the assembled battery 1 of the rotating shaft 17 rotates is set between the center of gravity G of the assembled battery 1 and the center of gravity G and the rear end of the vehicle longitudinal direction. Since the battery 1 tends to drop due to its own weight toward the lower space 12, the battery 1 can be easily rotated as described above, and the impact absorbing effect is further enhanced.

また、組電池１のフロアパネル７に対するボルト１３とボルト１５による各固定部のうち、少なくとも車両前後方向後端下部、すなわちボルト１３による固定部のみを、組電池１の車両前方への移動によって固定が解除される構成としてもよい。このような構成であっても、組電池１が車両前方へ移動することで、少なくとも車両後方側のボルト１３による固定部が解除されるので、組電池１の前記した回転動作が容易になされるものとなる。   In addition, at least the lower part of the rear end in the vehicle front-rear direction, that is, the fixing part by the bolt 13 among the fixing parts by the bolt 13 and the bolt 15 to the floor panel 7 of the assembled battery 1 is fixed by moving the assembled battery 1 forward of the vehicle. It is good also as a structure by which is canceled. Even in such a configuration, when the assembled battery 1 moves to the front of the vehicle, at least the fixing portion by the bolt 13 on the rear side of the vehicle is released, so that the rotating operation of the assembled battery 1 is facilitated. It will be a thing.

本発明の一実施形態に係わる組電池車載構造を示す側面図である。It is a side view which shows the assembled battery vehicle-mounted structure concerning one Embodiment of this invention. 図１の組電池車載構造を示す斜視図である。It is a perspective view which shows the assembled battery vehicle-mounted structure of FIG. 組電池のフロアパネルに対する固定部を示す斜視図である。It is a perspective view which shows the fixing | fixed part with respect to the floor panel of an assembled battery. 組電池が車両後方から衝撃を受けて前方へ移動した状態を示す動作説明図である。It is operation | movement explanatory drawing which shows the state which the assembled battery received the impact from the vehicle back and moved ahead. 図４の状態に対応する組電池の固定部を示す斜視図である。It is a perspective view which shows the fixing | fixed part of the assembled battery corresponding to the state of FIG. 組電池が図４の状態から回転した状態を示す動作説明図である。It is operation | movement explanatory drawing which shows the state which the assembled battery rotated from the state of FIG.

符号の説明Explanation of symbols

１ 組電池
５ 後部座席
７ フロアパネル
１７ 車幅方向に平行な回転軸
Ｇ 組電池の重心 1 assembled battery 5 rear seat 7 floor panel 17 rotation axis parallel to vehicle width direction G center of gravity of assembled battery

Claims (5)

車両の後部座席より後方のフロアパネル上に電池を搭載した電池車載構造において、車両後方からの衝撃荷重によって、前記電池を、その車両前後方向最前端より後方でかつ下部における車幅方向に平行な回転軸を中心として回転させることを特徴とする電池車載構造。   In a battery-mounted structure in which a battery is mounted on a floor panel behind a rear seat of the vehicle, the battery is placed behind the vehicle front-rear front end and parallel to the vehicle width direction at the lower part due to an impact load from the rear of the vehicle. A battery-mounted structure that rotates around a rotation axis. 前記回転軸は、前記電池の重心を含みこの重心と車両前後方向後端部との間に位置することを特徴とする請求項１に記載の電池車載構造。   The battery on-vehicle structure according to claim 1, wherein the rotation shaft includes a center of gravity of the battery and is positioned between the center of gravity and a rear end portion in the vehicle front-rear direction. 前記電池は、車両後方からの衝撃荷重によって、車両前方へ移動してから前記回転軸を中心として回転することを特徴とする請求項１または２に記載の電池車載構造。   3. The on-vehicle battery structure according to claim 1, wherein the battery rotates about the rotating shaft after moving forward of the vehicle due to an impact load from the rear of the vehicle. 前記電池の前記フロアパネルに対する固定部のうち、少なくとも車両前後方向後端下部は、前記電池の車両前方への移動によって固定が解除されることを特徴とする請求項３に記載の電池車載構造。   4. The on-vehicle battery structure according to claim 3, wherein among the fixing portions of the battery to the floor panel, at least a rear end lower portion in the vehicle front-rear direction is released by moving the battery forward of the vehicle. 前記電池の回転は、電池に設けた回転ガイドが前記回転軸に係止した状態でなされることを特徴とする請求項３または４に記載の電池車載構造。   The battery on-vehicle structure according to claim 3 or 4, wherein the battery is rotated in a state in which a rotation guide provided in the battery is locked to the rotation shaft.
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JP2008307992A (en) * 2007-06-13 2008-12-25 Toyota Motor Corp Vehicle lower part structure
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JP2015104954A (en) * 2013-11-28 2015-06-08 アイシン軽金属株式会社 Battery pack frame structure
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JP2018016284A (en) * 2016-07-29 2018-02-01 トヨタ自動車株式会社 Vehicle rear part structure
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