JP7091705B2 - vehicle - Google Patents

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JP7091705B2
JP7091705B2 JP2018032579A JP2018032579A JP7091705B2 JP 7091705 B2 JP7091705 B2 JP 7091705B2 JP 2018032579 A JP2018032579 A JP 2018032579A JP 2018032579 A JP2018032579 A JP 2018032579A JP 7091705 B2 JP7091705 B2 JP 7091705B2
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vehicle
heat exchanger
cooler
main body
tank
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JP2019147446A (en
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康一 中村
智章 古川
清式 ▲高▼木
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Toyota Motor Corp
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Toyota Motor Corp
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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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Description

本発明は、熱交換器を進行方向に対して後部に備える車両に関するものである。 The present invention relates to a vehicle having a heat exchanger at the rear in the direction of travel.

特許文献１には、燃料電池の燃料ガスを貯蔵するタンクを車両の進行方向に対して後部（以下、車両後部）に搭載した車両が開示されている。 Patent Document 1 discloses a vehicle in which a tank for storing fuel gas of a fuel cell is mounted at the rear portion (hereinafter referred to as the rear portion of the vehicle) with respect to the traveling direction of the vehicle.

国際公開第２０１５／１８５１８４号International Publication No. 2015/185184

ところで、特許文献１の車両において、熱交換器を車両後部に配置する場合、より具体的には、冷媒が導入される熱交換器本体と、熱交換器本体の下方を覆うアンダカバーとを備えた熱交換器を、熱交換器本体に導く外気を車両の進行方向に対して後方から取り入れ、熱交換器本体に導かれた外気を車両の下方に排出するように車両後部の床下に配置する場合、熱交換器が路面と干渉し、熱交換器が破損するという課題があった。 By the way, in the vehicle of Patent Document 1, when the heat exchanger is arranged at the rear of the vehicle, more specifically, the heat exchanger main body into which the refrigerant is introduced and the undercover covering the lower part of the heat exchanger main body are provided. The heat exchanger is placed under the floor at the rear of the vehicle so that the outside air guided to the heat exchanger body is taken in from behind with respect to the traveling direction of the vehicle and the outside air guided to the heat exchanger body is discharged to the lower part of the vehicle. In this case, there is a problem that the heat exchanger interferes with the road surface and the heat exchanger is damaged.

本発明は、以上の事情を背景として為されたものであり、その目的とするところは、熱交換器を車両の進行方向に対して後部に備える車両において、路面干渉による熱交換器の破損を抑制できる構造を提供することにある。 The present invention has been made in the background of the above circumstances, and an object of the present invention is to prevent damage to the heat exchanger due to road surface interference in a vehicle having a heat exchanger at the rear in the traveling direction of the vehicle. The purpose is to provide a structure that can be suppressed.

第１発明の要旨とするところは、（ａ）車両の進行方向に対して後部に、燃料ガスを貯留するタンクおよび熱交換器を備えた車両であって、（ｂ）前記熱交換器は、冷媒が導入される熱交換器本体と、前記熱交換器本体の下方を覆うアンダカバーとを備え、前記熱交換器本体に導く外気を車両の進行方向に対して後方から取り入れ、前記熱交換器本体に導かれた外気を車両の下方に排出するように車両の床下に配置され、（ｃ）前記タンクは、前記熱交換器の車幅方向の側方に、車幅方向に見たときに前記熱交換器に対して重なるように、且つ、最下端面が前記熱交換器の前記アンダカバーの最下端面よりも低くなるように配置されていることを特徴とする。
また、第２発明の要旨とするところは、第１発明において、前記熱交換器のうち車幅方向に見たときに前記タンクと重なる部位は、前記タンクに対して車幅方向で２０ｃｍ以下の位置に配置されていることを特徴とする。 The gist of the first invention is (a) a vehicle provided with a tank for storing fuel gas and a heat exchanger at the rear in the traveling direction of the vehicle, and (b) the heat exchanger is A heat exchanger main body into which a refrigerant is introduced and an undercover that covers the lower part of the heat exchanger main body are provided, and outside air leading to the heat exchanger main body is taken in from the rear with respect to the traveling direction of the vehicle, and the heat exchanger is taken in. It is arranged under the floor of the vehicle so as to exhaust the outside air guided to the main body to the lower part of the vehicle. It is characterized in that it is arranged so as to overlap with the heat exchanger and the lowermost end surface thereof is lower than the lowermost end surface of the undercover of the heat exchanger.
Further, the gist of the second invention is that, in the first invention, the portion of the heat exchanger that overlaps with the tank when viewed in the vehicle width direction is 20 cm or less in the vehicle width direction with respect to the tank. It is characterized by being arranged in a position.

第１発明の車両によれば、タンクは、熱交換器の車幅方向の側方に、車幅方向に見たときに熱交換器に対して重なるように、且つ、最下端面が、熱交換器のアンダカバーの最下端面よりも低くなるように配置されているため、熱交換器よりも先にタンクが路面と干渉し、熱交換器が路面と干渉することを抑制することができる。よって、熱交換器の路面との干渉による破損を抑制することができる。 According to the vehicle of the first invention, the tank is on the side of the heat exchanger in the vehicle width direction so as to overlap the heat exchanger when viewed in the vehicle width direction, and the lowermost end surface thereof is heat. Since it is arranged so as to be lower than the lowermost end surface of the undercover of the exchanger, it is possible to prevent the tank from interfering with the road surface and the heat exchanger from interfering with the road surface before the heat exchanger. .. Therefore, damage due to interference with the road surface of the heat exchanger can be suppressed.

車両用クーラ装置が搭載された車両を左側から見た概略側面図である。It is a schematic side view of a vehicle equipped with a vehicle cooler device as viewed from the left side. 車両左側に配設された車両用クーラ装置および水素タンクを車両の左側から見た側面図である。It is a side view of a vehicle cooler device and a hydrogen tank arranged on the left side of the vehicle as seen from the left side of the vehicle. 図２の車両用クーラ装置および水素タンクを、車両前側の斜め左下から見た斜視図であり、車両用クーラ装置と水素タンクとの位置関係を説明する図である。FIG. 2 is a perspective view of the vehicle cooler device and the hydrogen tank of FIG. 2 as viewed from the lower left diagonally on the front side of the vehicle, and is a diagram for explaining the positional relationship between the vehicle cooler device and the hydrogen tank.

以下、本発明の実施例を図面を参照しつつ詳細に説明する。なお、以下の実施例において図は適宜簡略化或いは変形されており、各部の寸法比および形状等は必ずしも正確に描かれていない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following examples, the drawings are appropriately simplified or modified, and the dimensional ratios and shapes of each part are not always drawn accurately.

図１は、車両用クーラ装置１０が搭載された車両１２を左側から見た概略側面図である。この車両１２は、燃料電池により発電して図示しない電動モータにより駆動力を発生し、後輪１４を回転駆動して走行する燃料電池式の電気自動車である。また、車両進行方向（すなわち車両前後方向）において後輪１４よりも車両後方側に、燃料電池の燃料ガスである水素が貯留される水素タンク１６および車両用クーラ装置１０が配設されている。この車両用クーラ装置１０は、冷媒であるオイルを外気との熱交換によって冷却する熱交換器であり、その冷却されたオイルが電動モータやトランスアクスル、電源装置等に供給されてそれ等の冷却に用いられる。電動モータおよびトランスアクスルを含む車両用駆動装置１８も、車両進行方向において後輪１４の近傍に配設されており、本実施例の車両１２は、駆動力源後置式の後輪駆動車両である。車両用クーラ装置１０は、車両１２の左右両側に一対配置されているが、実質的に同じ構成で左右対称に配置されているだけであるため、車両左側の車両用クーラ装置１０について具体的に説明する。 FIG. 1 is a schematic side view of a vehicle 12 on which a vehicle cooler device 10 is mounted, as viewed from the left side. The vehicle 12 is a fuel cell-type electric vehicle that generates electricity from a fuel cell, generates driving force by an electric motor (not shown), and rotates and drives the rear wheels 14. Further, a hydrogen tank 16 for storing hydrogen, which is a fuel gas of a fuel cell, and a vehicle cooler device 10 are arranged on the rear side of the vehicle with respect to the rear wheels 14 in the vehicle traveling direction (that is, in the vehicle front-rear direction). The vehicle cooler device 10 is a heat exchanger that cools oil as a refrigerant by heat exchange with the outside air, and the cooled oil is supplied to an electric motor, a transformer axle, a power supply device, and the like to cool them. Used for. The vehicle drive device 18 including the electric motor and the transaxle is also arranged in the vicinity of the rear wheels 14 in the vehicle traveling direction, and the vehicle 12 of the present embodiment is a rear wheel drive vehicle with a rear-mounted driving force source. .. A pair of vehicle cooler devices 10 are arranged on both the left and right sides of the vehicle 12, but since they are only arranged symmetrically with substantially the same configuration, the vehicle cooler device 10 on the left side of the vehicle is specifically arranged. explain.

図２は、車両左側に配設された車両用クーラ装置１０および水素タンク１６を車両１２の左側から見た側面図である。図３は、図２の車両用クーラ装置１０および水素タンク１６を、車両前側の斜め左下から見た斜視図であり、車両用クーラ装置１０と水素タンク１６との位置関係を説明する図である。 FIG. 2 is a side view of the vehicle cooler device 10 and the hydrogen tank 16 arranged on the left side of the vehicle as viewed from the left side of the vehicle 12. FIG. 3 is a perspective view of the vehicle cooler device 10 and the hydrogen tank 16 of FIG. 2 as viewed from diagonally lower left on the front side of the vehicle, and is a diagram illustrating the positional relationship between the vehicle cooler device 10 and the hydrogen tank 16. ..

車両用クーラ装置１０は、車両１２のフロアパネル２０の床下（下側）に配置され、金属製のクーラ取付ブラケット２２を介してフロアパネル２０の下面に取り付けられている。車両用クーラ装置１０は、冷媒であるオイルが導入されるクーラ本体２４と、そのクーラ本体２４に外気を導き入れる吸気ダクト２６と、クーラ本体２４の下方を覆うように配置されて後輪１４による路面からの泥跳ね等からクーラ本体２４を保護するアンダカバー２８とを備えている。フロアパネル２０は車体に相当し、アンダカバー２８は、クーラ本体２４から下方へ放出された放出空気を受け入れて下方へ排出する排気ダクトを兼ねている。フロアパネル２０に固定されるクーラ取付ブラケット２２についても車体と見做すことができる。なお、クーラ本体２４が、本発明の熱交換器本体に対応している。 The vehicle cooler device 10 is arranged under the floor (lower side) of the floor panel 20 of the vehicle 12, and is attached to the lower surface of the floor panel 20 via a metal cooler mounting bracket 22. The vehicle cooler device 10 is arranged by a cooler main body 24 into which oil as a refrigerant is introduced, an intake duct 26 for guiding outside air into the cooler main body 24, and a rear wheel 14 arranged so as to cover the lower part of the cooler main body 24. It is provided with an undercover 28 that protects the cooler body 24 from mud splashes from the road surface and the like. The floor panel 20 corresponds to a vehicle body, and the undercover 28 also serves as an exhaust duct that receives the discharged air discharged downward from the cooler main body 24 and discharges it downward. The cooler mounting bracket 22 fixed to the floor panel 20 can also be regarded as a vehicle body. The cooler body 24 corresponds to the heat exchanger body of the present invention.

クーラ本体２４は、アルミ鋳物等の金属製で、外形が平板形状、具体的には扁平な直方体形状を成しており、クーラ本体２４の上面３０および下面３２が略水平で且つ上面３０および下面３２の一辺（例えば長辺）が車両進行方向と略平行になる姿勢で配置されている。クーラ本体２４は、冷媒であるオイルが流通させられる流路（配管）が平板形状の全域に設けられており、四角形の上面３０の略全域から導入された外気が流路の周囲を流通させられて四角形の下面３２の略全域から下方へ放出されることにより、その外気との熱交換によって流路内のオイルを冷却する。クーラ本体２４の前側面（図２において紙面左側面）には、図示しない一対の連結ポートが設けられ、電動モータ等の冷却対象にオイルを供給する供給配管、および電動モータ等の冷却対象からオイルが戻される戻し配管が接続されるようになっている。 The cooler body 24 is made of metal such as cast aluminum and has a flat plate shape, specifically a flat rectangular parallelepiped shape, and the upper surface 30 and the lower surface 32 of the cooler body 24 are substantially horizontal and the upper surface 30 and the lower surface are formed. One side (for example, the long side) of 32 is arranged so as to be substantially parallel to the vehicle traveling direction. The cooler main body 24 is provided with a flow path (piping) through which oil as a refrigerant is circulated in the entire area of the flat plate shape, and outside air introduced from substantially the entire area of the upper surface 30 of the quadrangle is circulated around the flow path. By being discharged downward from substantially the entire lower surface 32 of the quadrangle, the oil in the flow path is cooled by heat exchange with the outside air. A pair of connecting ports (not shown) are provided on the front side surface of the cooler main body 24 (the left side surface of the paper in FIG. 2), and oil is supplied from a supply pipe for supplying oil to a cooling target such as an electric motor and oil from a cooling target such as an electric motor. The return pipe to be returned is connected.

クーラ本体２４は、金属製の締結ボルト４０により前記クーラ取付ブラケット２２に取り付けられている。クーラ取付ブラケット２２には、車両前側の２箇所、および車両後側の２箇所に、吸気ダクト２６を跨ぐようにそれぞれ吸気ダクト２６の外側から下方へ延び出すアーム部４２が設けられ、アーム部４２は、クーラ本体２４に設けられたＬ字型の金属ブラケットと重ね合わされて、締結ボルト４０およびナットにより金属ブラケットに締結されるようになっている。クーラ取付ブラケット２２は、図示しない金属製の固定ボルトによりフロアパネル２０に固定されている。 The cooler body 24 is attached to the cooler mounting bracket 22 by a metal fastening bolt 40. The cooler mounting bracket 22 is provided with arm portions 42 extending downward from the outside of the intake duct 26 so as to straddle the intake duct 26 at two locations on the front side of the vehicle and two locations on the rear side of the vehicle. Is overlapped with an L-shaped metal bracket provided on the cooler main body 24, and is fastened to the metal bracket by a fastening bolt 40 and a nut. The cooler mounting bracket 22 is fixed to the floor panel 20 by a metal fixing bolt (not shown).

吸気ダクト２６は、ポリプロピレン（ＰＰ）等の合成樹脂材料にて構成されているとともに中空形状を成しており、クーラ本体２４の上側に配設されている。吸気ダクト２６の後側部分は、クーラ本体２４から車両後方側へ延び出しており、外気を取り込む吸気口５０が後向きに開口するように設けられているとともに、後バンパー５２に設けられた開口５４内に挿入されて車両後端部付近まで達している。また、吸気ダクト２６は、全体として扁平な中空の直方体形状を成している。 The intake duct 26 is made of a synthetic resin material such as polypropylene (PP) and has a hollow shape, and is arranged on the upper side of the cooler main body 24. The rear portion of the intake duct 26 extends from the cooler main body 24 to the rear side of the vehicle, is provided so that the intake port 50 for taking in outside air opens backward, and the opening 54 provided in the rear bumper 52. It is inserted inside and reaches near the rear end of the vehicle. Further, the intake duct 26 has a flat hollow rectangular parallelepiped shape as a whole.

吸気ダクト２６の車両前側部分、すなわちクーラ本体２４の上面３０上に重ね合わされた部分は、クーラ本体２４に対して外気を導入するために下向きに開口する導入部６０として機能する。導入部６０は、クーラ本体２４の上面３０の略全域を覆っており、吸気ダクト２６からクーラ本体２４の上面３０の略全域、例えば冷媒流路が設けられた部分の８０％以上の範囲に外気が導入される。導入部６０とクーラ本体２４の上面３０との間には、四角枠形状のパッキン等のシール部材６２が配設されており、そのシール部材６２を介して導入部６０が上面３０に密着させられている。図２の太線矢印は、車両用クーラ装置１０において、車両１２の進行方向で後方に位置する吸気ダクト２６の吸気口５０から取り入れられた外気が、導入部６０を経てクーラ本体２４の内部へ導かれ、クーラ本体２４内を通過して車両１２の下方へ排出されるまでの流通経路を表している。 The vehicle front side portion of the intake duct 26, that is, the portion overlapped on the upper surface 30 of the cooler main body 24 functions as an introduction portion 60 that opens downward to introduce outside air to the cooler main body 24. The introduction portion 60 covers substantially the entire upper surface 30 of the cooler main body 24, and the outside air covers substantially the entire area from the intake duct 26 to the upper surface 30 of the cooler main body 24, for example, 80% or more of the portion where the refrigerant flow path is provided. Will be introduced. A seal member 62 such as a square frame-shaped packing is disposed between the introduction portion 60 and the upper surface 30 of the cooler main body 24, and the introduction portion 60 is brought into close contact with the upper surface 30 via the seal member 62. ing. The thick arrow in FIG. 2 indicates that, in the vehicle cooler device 10, the outside air taken in from the intake port 50 of the intake duct 26 located rearward in the traveling direction of the vehicle 12 is guided to the inside of the cooler main body 24 via the introduction portion 60. It represents a distribution route from passing through the cooler body 24 to being discharged below the vehicle 12.

排気ダクトを兼ねているアンダカバー２８は、ポリプロピレン（ＰＰ）等の合成樹脂材料にて構成されており、クーラ本体２４の下側に配設されている。クーラ本体２４の下方に位置する中間部分８０は、排気ダクトとしても機能する部分で、クーラ本体２４の下面３２から放出された放出空気を下方へ流通させて外部へ排出する排気口８２が、アンダカバー２８を車両上下方向に貫通するように設けられている。排気口８２は、クーラ本体２４の下面３２に対応する四角枠形状を成している。また、排気口８２の内側には、後輪１４による路面からの泥跳ね等からクーラ本体２４を保護するために、車両１２の幅方向と略平行に複数枚のフィン８６（図３参照）が設けられている。 The undercover 28, which also serves as an exhaust duct, is made of a synthetic resin material such as polypropylene (PP), and is arranged under the cooler main body 24. The intermediate portion 80 located below the cooler main body 24 is a portion that also functions as an exhaust duct, and the exhaust port 82 that circulates the discharged air discharged from the lower surface 32 of the cooler main body 24 downward and discharges it to the outside is under. The cover 28 is provided so as to penetrate the vehicle in the vertical direction. The exhaust port 82 has a square frame shape corresponding to the lower surface 32 of the cooler main body 24. Further, inside the exhaust port 82, a plurality of fins 86 (see FIG. 3) are provided substantially parallel to the width direction of the vehicle 12 in order to protect the cooler body 24 from mud splashing from the road surface by the rear wheels 14. It is provided.

上記排気口８２の上端開口部すなわち放出空気の受入れ側の開口部とクーラ本体２４の下面３２との間には、四角枠形状のパッキン等のシール部材８８が配設されており、そのシール部材８８を介して排気口８２が下面３２に密着させられており、下面３２の略全域、例えば冷媒流路が設けられた部分の８０％以上の範囲、から放出される放出空気が排気口８２内に受け入れられる。シール部材８８は単一の環状の部材であっても良いが、複数に分割された部材を環状（四角枠形状）に組み合わせて用いることもできる。 A seal member 88 such as a square frame-shaped packing is disposed between the upper end opening of the exhaust port 82, that is, the opening on the receiving side of the discharged air and the lower surface 32 of the cooler main body 24. The exhaust port 82 is brought into close contact with the lower surface 32 via the 88, and the discharged air discharged from substantially the entire area of the lower surface 32, for example, 80% or more of the portion where the refrigerant flow path is provided, is inside the exhaust port 82. Is accepted by. The seal member 88 may be a single annular member, but a plurality of divided members may be used in combination in an annular shape (square frame shape).

排気口８２の排出側の開口部分、すなわち四角枠形状の下端開口部は、図２の白抜き矢印で示す車両走行時の気流Ａにより負圧とされ、クーラ本体２４の下面３２から放出される放出空気が、太線矢印で示すように排気口８２から下方へ排出されるとともに、前記吸気ダクト２６の吸気口５０内に新たな外気が吸入されてクーラ本体２４内に導入される。すなわち、本実施例の車両用クーラ装置１０は差圧導風式のクーラ装置であり、上記排気口８２は排気流路に相当する。 The opening on the discharge side of the exhaust port 82, that is, the lower end opening in the shape of a square frame, is subjected to negative pressure by the air flow A during vehicle traveling indicated by the white arrow in FIG. 2, and is discharged from the lower surface 32 of the cooler body 24. The discharged air is discharged downward from the exhaust port 82 as shown by the thick arrow, and new outside air is sucked into the intake port 50 of the intake duct 26 and introduced into the cooler main body 24. That is, the vehicle cooler device 10 of this embodiment is a differential pressure guiding type cooler device, and the exhaust port 82 corresponds to an exhaust flow path.

アンダカバー２８の前側部分は、クーラ本体２４等を保護するためにクーラ本体２４よりも車両前方側へ突き出しているとともに、車両走行時の気流Ａによって排気口８２を負圧にするため、排気口８２の下端よりも下方へ突き出している。アンダカバー２８の後側部分は、車両走行時の空気抵抗を低減するためにクーラ本体２４よりも車両後方側へ延び出しており、吸気口５０と同様に車両後端部付近まで達している。 The front part of the undercover 28 protrudes toward the front side of the vehicle from the cooler body 24 in order to protect the cooler body 24 and the like, and the exhaust port 82 is made negative pressure by the air flow A when the vehicle is running. It protrudes below the lower end of 82. The rear portion of the undercover 28 extends toward the rear side of the vehicle from the cooler main body 24 in order to reduce the air resistance when the vehicle travels, and reaches the vicinity of the rear end portion of the vehicle like the intake port 50.

水素タンク１６は、フロアパネル２０の下側に配置されており、図３に示されるように、一対のタンク取付ブラケット９０、９２を介して車両１２の車体、例えばフロアパネル２０や図示しないクロスメンバ等に固定されている。図３は、車両用クーラ装置１０と水素タンク１６との位置関係を説明する図で、車両前側の斜め左下から見た斜視図である。この図３の車両用クーラ装置１０は、車両左側に配設されたものであるが、水素タンク１６を挟んで反対側（車両右側）にも略対称的に右側の車両用クーラ装置１０が配設されている。すなわち、車両１２の車幅方向において水素タンク１６の左右両側（側方）に一対の車両用クーラ装置１０が配置されている。これら一対の車両用クーラ装置１０は、それぞれ水素タンク１６の近傍、例えば水素タンク１６との最近接部位における水平方向の離間距離が２０ｃｍ以下となるような位置関係で配設されている。 The hydrogen tank 16 is arranged below the floor panel 20, and as shown in FIG. 3, the vehicle body of the vehicle 12, for example, the floor panel 20 or a cross member (not shown) is interposed via the pair of tank mounting brackets 90 and 92. Etc. are fixed. FIG. 3 is a diagram for explaining the positional relationship between the vehicle cooler device 10 and the hydrogen tank 16, and is a perspective view seen from the lower left diagonally on the front side of the vehicle. The vehicle cooler device 10 of FIG. 3 is arranged on the left side of the vehicle, but the vehicle cooler device 10 on the right side is arranged substantially symmetrically on the opposite side (right side of the vehicle) across the hydrogen tank 16. It is set up. That is, a pair of vehicle cooler devices 10 are arranged on the left and right sides (sides) of the hydrogen tank 16 in the vehicle width direction of the vehicle 12. The pair of vehicle cooler devices 10 are arranged in a positional relationship such that the horizontal separation distance in the vicinity of the hydrogen tank 16, for example, the closest portion to the hydrogen tank 16 is 20 cm or less.

図３では、水素タンク１６の左端部、および車両用クーラ装置１０の車両前側の右端部が、最近接部位に相当する。図２および図３に示すように、水素タンク１６および車両用クーラ装置１０を車両１２の側方から、すなわち車幅方向に見たとき、水素タンク１６が、車両用クーラ装置１０の前方側の一部に重なるように配置されている。また、車両１２の進行方向において、車両用クーラ装置１０の前方側の端部が、水素タンク１６の前方側の端部よりも後方側に位置するように配置されている。 In FIG. 3, the left end portion of the hydrogen tank 16 and the right end portion of the vehicle cooler device 10 on the vehicle front side correspond to the closest contact portion. As shown in FIGS. 2 and 3, when the hydrogen tank 16 and the vehicle cooler device 10 are viewed from the side of the vehicle 12, that is, in the vehicle width direction, the hydrogen tank 16 is on the front side of the vehicle cooler device 10. It is arranged so as to overlap a part. Further, in the traveling direction of the vehicle 12, the front end of the vehicle cooler device 10 is arranged so as to be located behind the front end of the hydrogen tank 16.

また、水素タンク１６は、水平線に対して垂直な方向（鉛直方向）において、その最下端面が車両用クーラ装置１０のアンダカバー２８の最下端面よりも低い位置に配置されている。具体的には、タンク取付ブラケット９０、９２を含めた水素タンク１６の最下端面が、一対の車両用クーラ装置１０のアンダカバー２８の最下端面よりも、鉛直方向で例えば５０ｍｍ程度低くなる位置関係で配設されている。従って、走行路面に凹凸等が存在しても、アンダカバー２８よりも先に水素タンク１６が路面の凹凸等と干渉させられ、車両用クーラ装置１０への下方からの衝撃荷重の入力が抑制される。水素タンク１６は金属製で、下方からの衝撃荷重に対してアンダカバー２８およびクーラ本体２４の何れよりも強度が高い高強度部品であり、衝撃荷重が水素タンク１６、更にはフロアパネル２０等の車体によって受け止められることにより、アンダカバー２８、更にはクーラ本体２４が、路面との干渉によって損傷することが抑制される。 Further, the hydrogen tank 16 is arranged at a position where the lowermost end surface thereof is lower than the lowermost end surface of the undercover 28 of the vehicle cooler device 10 in the direction perpendicular to the horizon (vertical direction). Specifically, the position where the lowermost end surface of the hydrogen tank 16 including the tank mounting brackets 90 and 92 is lower than the lowermost end surface of the undercover 28 of the pair of vehicle cooler devices 10 by, for example, about 50 mm in the vertical direction. Arranged in a relationship. Therefore, even if there is unevenness on the traveling road surface, the hydrogen tank 16 interferes with the unevenness on the road surface before the undercover 28, and the input of the impact load from below to the vehicle cooler device 10 is suppressed. To. The hydrogen tank 16 is made of metal and is a high-strength component having higher strength than either the undercover 28 or the cooler body 24 against an impact load from below. The impact load is the hydrogen tank 16, the floor panel 20, etc. By being received by the vehicle body, the undercover 28 and the cooler main body 24 are prevented from being damaged by interference with the road surface.

このように、水素タンク１６は、車両用クーラ装置１０の車幅方向の側方に、車幅方向に見たときに車両用クーラ装置１０に対して重なるように、且つ、最下端面が、車両用クーラ装置１０のアンダカバー２８の最下端面よりも低くなるように配置されているため、路面に凹凸等が存在しても、アンダカバー２８よりも先に水素タンク１６が路面と干渉し易くなる。これにより、アンダカバー２８が路面と干渉することが抑制され、路面との干渉によるクーラ本体２４の破損が抑制される。また、水素タンク１６は、燃料電池式の電気自動車である車両１２が元々備えている部品であるため、新たな部品を追加することなく、下方からの衝撃荷重によるクーラ本体２４の損傷を簡便に抑制できる。 As described above, the hydrogen tank 16 overlaps with the vehicle cooler device 10 on the side of the vehicle cooler device 10 in the vehicle width direction and with respect to the vehicle cooler device 10 when viewed in the vehicle width direction, and the lowermost end surface thereof is formed. Since it is arranged so as to be lower than the lowermost end surface of the undercover 28 of the vehicle cooler device 10, the hydrogen tank 16 interferes with the road surface before the undercover 28 even if the road surface has irregularities or the like. It will be easier. As a result, the undercover 28 is suppressed from interfering with the road surface, and damage to the cooler body 24 due to the interference with the road surface is suppressed. Further, since the hydrogen tank 16 is a part originally provided in the vehicle 12 which is a fuel cell type electric vehicle, it is easy to damage the cooler body 24 due to the impact load from below without adding new parts. Can be suppressed.

以上、本発明の実施例を図面に基づいて詳細に説明したが、本発明はその他の態様においても適用される。 Although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is also applicable to other aspects.

例えば、前述の実施例では、車両１２の車幅方向で水素タンク１６の左右両側に一対の車両用クーラ装置１０が配置されていたが、水素タンク１６の左右の一方に車両用クーラ装置１０が配置されるものであっても構わない。 For example, in the above-described embodiment, the pair of vehicle cooler devices 10 are arranged on the left and right sides of the hydrogen tank 16 in the vehicle width direction of the vehicle 12, but the vehicle cooler devices 10 are arranged on one of the left and right sides of the hydrogen tank 16. It may be arranged.

また、前述の実施例では、車幅方向に見たとき、水素タンク１６と車両用クーラ装置１０の前方側の一部とが重なるものであったが、水素タンク１６と車両用クーラ装置１０の全体とが重なるものであっても構わない。 Further, in the above-described embodiment, when viewed in the vehicle width direction, the hydrogen tank 16 and a part of the front side of the vehicle cooler device 10 overlap each other, but the hydrogen tank 16 and the vehicle cooler device 10 overlap. It does not matter if it overlaps with the whole.

また、前述の実施例では、フロアパネル２０の下側に車両用クーラ装置１０が配置されていたが、本発明は必ずしも車両用クーラ装置１０に限定されるものではなく、車両用クーラ装置１０に代わって、熱交換器としてのラジエータが設けられるものであっても構わない。これに関連して、車両用クーラ装置１０は、冷媒としてオイルを冷却するものであったが、オイルに代わって冷却液（クーラント）を冷却するものであっても構わない。 Further, in the above-described embodiment, the vehicle cooler device 10 is arranged under the floor panel 20, but the present invention is not necessarily limited to the vehicle cooler device 10, but is not limited to the vehicle cooler device 10. Alternatively, a radiator as a heat exchanger may be provided. In this regard, the vehicle cooler device 10 cools the oil as a refrigerant, but may cool the coolant (coolant) instead of the oil.

また、前述の実施例では、フロアパネル２０の下側に水素が貯留される水素タンク１６が配置されていたが、タンクに貯留される燃料は水素に限定されるものではなく、例えばメタノールなど他の燃料が貯留されるタンクがフロアパネル２０の下側に配置されるものであっても構わない。 Further, in the above-described embodiment, the hydrogen tank 16 in which hydrogen is stored is arranged under the floor panel 20, but the fuel stored in the tank is not limited to hydrogen, for example, methanol or the like. The tank in which the fuel of the above can be stored may be arranged under the floor panel 20.

なお、上述したのはあくまでも一実施形態であり、本発明は当業者の知識に基づいて種々の変更、改良を加えた態様で実施することができる。 It should be noted that the above is only one embodiment, and the present invention can be carried out in a mode in which various changes and improvements are made based on the knowledge of those skilled in the art.

１０：車両用クーラ装置（熱交換器）
１２：車両
１６：水素タンク（タンク）
２４：クーラ本体（熱交換器本体）
２８：アンダカバー 10: Vehicle cooler device (heat exchanger)
12: Vehicle 16: Hydrogen tank (tank)
24: Cooler body (heat exchanger body)
28: Undercover

Claims (2)

車両の進行方向に対して後部に、燃料ガスを貯留するタンクおよび熱交換器を備えた車両であって、
前記熱交換器は、冷媒が導入される熱交換器本体と、前記熱交換器本体の下方を覆うアンダカバーとを備え、前記熱交換器本体に導く外気を車両の進行方向に対して後方から取り入れ、前記熱交換器本体に導かれた外気を車両の下方に排出するように車両の床下に配置され、
前記タンクは、前記熱交換器の車幅方向の側方に、車幅方向に見たときに前記熱交換器に対して重なるように、且つ、最下端面が前記熱交換器の前記アンダカバーの最下端面よりも低くなるように配置されている
ことを特徴とする車両。 A vehicle equipped with a tank for storing fuel gas and a heat exchanger at the rear of the vehicle in the direction of travel.
The heat exchanger includes a heat exchanger main body into which a refrigerant is introduced and an undercover that covers the lower part of the heat exchanger main body, and guides the outside air to the heat exchanger main body from behind with respect to the traveling direction of the vehicle. It is taken in and placed under the floor of the vehicle so that the outside air guided to the heat exchanger body is discharged to the lower part of the vehicle.
The tank is arranged sideways in the vehicle width direction of the heat exchanger so as to overlap the heat exchanger when viewed in the vehicle width direction, and the lowermost end surface thereof is the undercover of the heat exchanger. A vehicle characterized by being placed so that it is lower than the bottom edge of the vehicle. 前記熱交換器のうち車幅方向に見たときに前記タンクと重なる部位は、前記タンクに対して車幅方向で２０ｃｍ以下の位置に配置されているThe portion of the heat exchanger that overlaps with the tank when viewed in the vehicle width direction is arranged at a position of 20 cm or less in the vehicle width direction with respect to the tank.
ことを特徴とする請求項１の車両。The vehicle according to claim 1, characterized in that.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002141079A (en) 2000-08-24 2002-05-17 General Motors Corp <Gm> Heat treatment system for electrochemical engine
JP2003276455A (en) 2002-03-26 2003-09-30 Honda Motor Co Ltd Engine cooling device for rear engine vehicle
JP2009248920A (en) 2008-04-10 2009-10-29 Honda Motor Co Ltd Cooling device of vehicle
US20130068547A1 (en) 2011-09-21 2013-03-21 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Rear spoiler with a cooling device for a motor vehicle

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002141079A (en) 2000-08-24 2002-05-17 General Motors Corp <Gm> Heat treatment system for electrochemical engine
JP2003276455A (en) 2002-03-26 2003-09-30 Honda Motor Co Ltd Engine cooling device for rear engine vehicle
JP2009248920A (en) 2008-04-10 2009-10-29 Honda Motor Co Ltd Cooling device of vehicle
US20130068547A1 (en) 2011-09-21 2013-03-21 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Rear spoiler with a cooling device for a motor vehicle

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