JP2006176105A - Fuel cell vehicle - Google Patents

Fuel cell vehicle Download PDF

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JP2006176105A
JP2006176105A JP2005311435A JP2005311435A JP2006176105A JP 2006176105 A JP2006176105 A JP 2006176105A JP 2005311435 A JP2005311435 A JP 2005311435A JP 2005311435 A JP2005311435 A JP 2005311435A JP 2006176105 A JP2006176105 A JP 2006176105A
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fuel cell
stack frame
vibration
frame
vehicle
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JP4754321B2 (en
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Takashi Kato
高士 加藤
Makoto Anazawa
誠 穴沢
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Honda Motor Co Ltd
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Honda 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
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

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  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuel cell vehicle capable of surely preventing transmission of vibration of a vehicle body to a fuel cell, while securing the support rigidity of the fuel cell. <P>SOLUTION: In this fuel cell vehicle, the fuel cell for generating electricity by an electrochemical reaction of hydrogen and oxygen and a fuel cell system box for housing the accessories are mounted. Front side stack frame 31 and rear side stack frame 32 extending in the vehicle width direction are provided on a lower side 26 of the fuel cell system box. Both end parts of the fuel cell are fixed to the front side stack frame 31 and the rear side stack frame 32. A vibration control material is provided between the front side stack frame 31 and rear side stack frame 32. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、燃料電池自動車とりわけ燃料電池等を収納する燃料電池システムボックスに防振対策を施した燃料電池自動車に関する。   The present invention relates to a fuel cell vehicle, particularly a fuel cell vehicle in which a vibration prevention measure is taken for a fuel cell system box that houses a fuel cell and the like.

従来から、燃料電池を搭載した燃料電池自動車が知られている。燃料電池を搭載するにあたっては、車体振動を考慮した様々な対策が提案されている。例えば、燃料電池に弾性のあるマウント部材を設け、このマウンド部材を介して燃料電池を収容ケースに設置するものが提案されている（特許文献１、２参照）。
特開２００２−３６７６５１号公報 特開２００３−２９７３７７号公報 Conventionally, a fuel cell vehicle equipped with a fuel cell is known. Various measures in consideration of vehicle body vibration have been proposed for mounting a fuel cell. For example, there has been proposed one in which a fuel cell is provided with an elastic mount member, and the fuel cell is installed in a housing case via the mound member (see Patent Documents 1 and 2).
JP 2002-367651 A JP 2003-297377 A

しかしながら、従来の燃料電池自動車にあっては、収容ケースに対してマウント部材を介して燃料電池を弾性的に支持することができる点で有利であるが、燃料電池の収容ケースに対する支持剛性を充分に確保できないという問題がある。また、マウント部材の配置位置等の設定が困難であるという問題がある。   However, the conventional fuel cell vehicle is advantageous in that the fuel cell can be elastically supported with respect to the housing case via the mount member, but the support rigidity of the fuel cell with respect to the housing case is sufficient. There is a problem that cannot be secured. Further, there is a problem that it is difficult to set the mounting position of the mount member.

そこで、この発明は、燃料電池の支持剛性を確保しつつ、車体の振動が燃料電池に伝達されるのを確実に防止できる燃料電池自動車を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel cell vehicle that can reliably prevent vibrations of the vehicle body from being transmitted to the fuel cell while ensuring the support rigidity of the fuel cell.

上記目的を達成するために、請求項１に記載した発明は、水素と酸素の電気化学反応によって発電する燃料電池（例えば、実施形態における燃料電池３）及びその補機類を収納する燃料電池システムボックス（例えば、実施形態における燃料電池システムボックス５）を搭載した燃料電池自動車において、前記燃料電池システムボックスの下面（例えば、実施形態における下壁２６上面）に車幅方向に延びる骨格部材（例えば、実施形態における前側スタックフレーム３１，後側スタックフレーム３２）を前側と後側に設け、これら前側と後側の骨格部材に燃料電池の両端部を固定すると共に、前後の骨格部材間に防振材（例えば、実施形態における防振材４４）を設けたことを特徴とする。
このように構成することで、前後の骨格部材により燃料電池を確実に燃料電池システムボックスに固定すると共に、防振材により燃料電池システムボックス下面の振動が燃料電池に伝達されるのを防止することができる。 In order to achieve the above object, the invention described in claim 1 is a fuel cell system that houses a fuel cell (for example, the fuel cell 3 in the embodiment) that generates electric power by an electrochemical reaction between hydrogen and oxygen and its auxiliary equipment. In a fuel cell vehicle equipped with a box (for example, the fuel cell system box 5 in the embodiment), a skeletal member (for example, a frame member extending in the vehicle width direction on the lower surface of the fuel cell system box (for example, the upper surface of the lower wall 26 in the embodiment)) In the embodiment, the front stack frame 31 and the rear stack frame 32) are provided on the front side and the rear side, both ends of the fuel cell are fixed to the front side and rear side frame members, and the vibration isolating material is provided between the front and rear frame members. (For example, the vibration isolator 44 in the embodiment) is provided.
With this configuration, the fuel cell is securely fixed to the fuel cell system box by the front and rear skeleton members, and the vibration of the lower surface of the fuel cell system box is prevented from being transmitted to the fuel cell by the vibration isolator. Can do.

請求項２に記載した発明は、前記防振材を前記前後に設けた骨格部材に固定されたプレート（例えば、実施形態におけるサンドイッチパネル４１）により覆うことを特徴とする。
このように構成することで、プレートを前後の骨格部材に取り付けることでプレートの面振動を抑制することが可能となる。 The invention described in claim 2 is characterized in that the vibration-proof material is covered with a plate (for example, the sandwich panel 41 in the embodiment) fixed to the skeletal member provided in the front and rear.
By comprising in this way, it becomes possible to suppress the surface vibration of a plate by attaching a plate to the back-and-front frame member.

請求項１に記載した発明によれば、前後の骨格部材により燃料電池を確実に燃料電池システムボックスに固定すると共に、防振材により燃料電池システムボックス下面の振動が燃料電池に伝達されるのを防止することができるため、燃料電池を安定して支持できると共に、燃料電池を保護でき静粛性を高めることができる効果がある。   According to the first aspect of the present invention, the fuel cell is securely fixed to the fuel cell system box by the front and rear skeleton members, and the vibration of the lower surface of the fuel cell system box is transmitted to the fuel cell by the vibration isolating material. Therefore, the fuel cell can be stably supported, and the fuel cell can be protected and the quietness can be improved.

請求項２に記載した発明によれば、プレートを前後の骨格部材に取り付けることでプレートの面振動を抑制することが可能となる、静粛性を向上することができる効果がある。   According to the second aspect of the present invention, there is an effect that quietness can be improved by attaching the plate to the front and rear skeletal members, thereby suppressing the surface vibration of the plate.

次に、この発明の実施形態を図面に基づいて説明する。
図１に示すように、燃料電池自動車１は水素と酸素との電気化学反応によって発電を行う燃料電池３を搭載したものであり、この発電により生じた電力でモータ２を駆動して走行する。燃料電池３はフロントフロア４の下面に取り付けられる燃料電池システムボックス５内に収容されていて、車体後部のリヤフロア６下に配置された水素タンク１９，２０から供給される水素ガスと、車体前部に設けたコンプレッサ８から供給される空気中の酸素により発電を行う。 Next, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a fuel cell vehicle 1 is equipped with a fuel cell 3 that generates electric power by an electrochemical reaction between hydrogen and oxygen, and travels by driving a motor 2 with electric power generated by the electric power generation. The fuel cell 3 is housed in a fuel cell system box 5 attached to the lower surface of the front floor 4, and includes hydrogen gas supplied from hydrogen tanks 19 and 20 disposed under the rear floor 6 at the rear of the vehicle body, and the front of the vehicle body. Electricity is generated by oxygen in the air supplied from the compressor 8 provided in the apparatus.

図２、図３に示すように、フロントフロア４の下面の左右両側にはハット型断面形状のメインフレーム９がフランジ部１０により接合され、このメインフレーム９とフロントフロア４とで車体前後方向に車体骨格部１１が形成されている。メインフレーム９の外側壁にはハット型断面形状で車幅方向に延びるアウトリガ１２が３箇所に接合され、アウトリガ１２の外側端はサイドシル１３に接合されている。アウトリガ１２はメインフレーム９と同様にフロントフロア４の下面に接合されている。そして、メインフレーム９の下壁１４にボルト１５及びナット１６により燃料電池システムボックス５が締め付け固定されている。尚、図２中前後左右の矢印は各々車体の前後左右を示す。   As shown in FIGS. 2 and 3, a hat-shaped main frame 9 is joined to both the left and right sides of the lower surface of the front floor 4 by a flange portion 10. A vehicle body skeleton part 11 is formed. Outriggers 12 having a hat-shaped cross section and extending in the vehicle width direction are joined to the outer wall of the main frame 9 at three locations, and the outer ends of the outriggers 12 are joined to the side sill 13. The outrigger 12 is joined to the lower surface of the front floor 4 in the same manner as the main frame 9. The fuel cell system box 5 is fastened and fixed to the lower wall 14 of the main frame 9 by bolts 15 and nuts 16. Note that the front, rear, left, and right arrows in FIG.

そして、前記メインフレーム９とサイドシル１３とがサイドシル後端部を介して車体後部に前後方向に設けた左右のリヤフレーム１７（図１参照）に連接されている。図１に示すようにこのリヤフレーム１７に図示しないリヤサスペンションを備えたサブフレーム１８が下側から取り付けられている。このサブフレーム１８の前側と後側に水素タンク１９，２０が各々横向きに固定されている。   The main frame 9 and the side sill 13 are connected to left and right rear frames 17 (see FIG. 1) provided in the front-rear direction at the rear of the vehicle body via the side sill rear end. As shown in FIG. 1, a subframe 18 having a rear suspension (not shown) is attached to the rear frame 17 from below. Hydrogen tanks 19 and 20 are fixed laterally on the front side and the rear side of the subframe 18, respectively.

図４〜図６に示すように、燃料電池３が収容される前記燃料電池システムボックス５は矩形で箱形のボックス本体２１とこのボックス本体２１を上部から覆う蓋２２とで構成されている。   As shown in FIGS. 4 to 6, the fuel cell system box 5 in which the fuel cell 3 is accommodated is composed of a rectangular box-shaped box body 21 and a lid 22 that covers the box body 21 from above.

ボックス本体２１は前壁２３、後壁２４、両側壁２５，２５及び下壁（下面）２６とで構成されたもので、前記側壁２５の前部上縁と後部上縁には前記メインフレーム９への取付ブラケット２７が取り付けられている。前記側壁２５と下壁２６との間には骨格部２８を形成するサイドレインフォース２９が取り付けられている。
前記ボックス本体２１の下壁２６には車幅方向に亘って各サイドレインフォース２９間に前側スタックフレーム（骨格部材）３１と後側スタックフレーム（骨格部材）３２が接合されている。前側スタックフレーム３１はボックス本体２１の前端部からやや後側に、後側スタックフレーム３２はボックス本体２１の後端部からやや前側に各々取り付けられている。 The box body 21 includes a front wall 23, a rear wall 24, both side walls 25, 25, and a lower wall (lower surface) 26. The main frame 9 is disposed on the front upper edge and the rear upper edge of the side wall 25. A mounting bracket 27 is attached. A side drain force 29 forming a skeleton 28 is attached between the side wall 25 and the lower wall 26.
A front stack frame (frame member) 31 and a rear stack frame (frame member) 32 are joined to the lower wall 26 of the box body 21 between the side drain forces 29 in the vehicle width direction. The front stack frame 31 is attached to the rear side slightly from the front end portion of the box body 21, and the rear stack frame 32 is attached to the front side slightly from the rear end portion of the box body 21.

これら前側スタックフレーム３１と後側スタックフレーム３２はハット型断面形状に形成され、前側スタックフレーム３１、後側スタックフレーム３２の各周縁フランジ部３４をボックス本体２１の下壁２６上面及び前記サイドレインフォース２９に溶接接合してボックス本体２１の下壁２６上面に閉断面構造の骨格部３５を形成している。
そして、前記前側スタックフレーム３１と後側スタックフレーム３２との間には左右２つに分割構成され電気的に直列に接続された燃料電池３，３がブラケット３６を介して各々固定されている。このブラケット３６は断面Ｌ字型に形成され、このブラケット３６の下壁３７が前記前側スタックフレーム３１あるいは後側スタックフレーム３２の上面にボルト３８により固定され、前記ブラケット３６の縦壁３９が前記燃料電池３の前端縦壁あるいは後端縦壁にボルト３８により固定されている。 The front stack frame 31 and the rear stack frame 32 are formed in a hat-shaped cross-sectional shape, and the peripheral flange portions 34 of the front stack frame 31 and the rear stack frame 32 are connected to the upper surface of the lower wall 26 of the box body 21 and the side force. A frame portion 35 having a closed cross-sectional structure is formed on the upper surface of the lower wall 26 of the box body 21 by welding to 29.
Between the front stack frame 31 and the rear stack frame 32, fuel cells 3 and 3 that are divided into two parts on the left and right sides and are electrically connected in series are fixed via brackets 36. The bracket 36 is formed in an L-shaped cross section, a lower wall 37 of the bracket 36 is fixed to the upper surface of the front stack frame 31 or the rear stack frame 32 by bolts 38, and a vertical wall 39 of the bracket 36 is the fuel. The battery 3 is fixed to the front end vertical wall or the rear end vertical wall by bolts 38.

ここで、図６〜図８に示すように、前記前側スタックフレーム３１と後側スタックフレーム３２との間には、前記前側、後側スタックフレーム３１，３２の配置部位の下側、つまり各燃料電池３の下面に対応する各々の部位にボックス本体２１の下壁２６上面との間に空間部４０を形成する左右一対のサンドイッチパネル（プレート）４１が取り付けられている。このサンドイッチパネル４１は、前側フランジ部４２が前記前側スタックフレーム３１の周縁フランジ部３４の後縁に接合され、後側フランジ部４３が前記後側スタックフレーム３２の前縁に接合されており、このサンドイッチパネル４１とボックス本体２１の下壁２６との間の空間部４０には、例えば発泡ゴム材などからなる防振材４４が充填されている。
ここで、前記サンドイッチパネル４１の車幅方向中央部は前記ボックス本体２１の下壁２６に固定され、結果的に１つのサンドイッチパネルに２つの空間部４０，４０が形成され各空間部４０内に防振材４４が介装されることとなる。 Here, as shown in FIGS. 6 to 8, between the front stack frame 31 and the rear stack frame 32, the lower side of the arrangement part of the front and rear stack frames 31, 32, that is, each fuel. A pair of left and right sandwich panels (plates) 41 that form a space 40 between the upper surface of the lower wall 26 of the box body 21 is attached to each portion corresponding to the lower surface of the battery 3. The sandwich panel 41 has a front flange portion 42 joined to the rear edge of the peripheral flange portion 34 of the front stack frame 31, and a rear flange portion 43 joined to the front edge of the rear stack frame 32. A space 40 between the sandwich panel 41 and the lower wall 26 of the box body 21 is filled with a vibration isolating material 44 made of, for example, a foam rubber material.
Here, the center portion of the sandwich panel 41 in the vehicle width direction is fixed to the lower wall 26 of the box main body 21, and as a result, two space portions 40, 40 are formed in one sandwich panel, and each space portion 40 is formed in each space portion 40. The vibration isolator 44 is interposed.

また、前側スタックフレーム３１の前側にはボックス本体２１の下壁２６との間に空間部４５を形成する前側カバー部材４６が、後側スタックフレーム３２の後側にはボックス本体２１の下壁２６との間に空間部４７を形成する後側カバー部材４８が各々取り付けられ、各空間部４５，４７にも発泡樹脂材などからなる防振材４９が充填されている。尚、前側カバー部材４６と後側カバー部材４８とは前記サンドイッチパネル４１の上面より高さが低くなっており、これら前側カバー部材４６と後側カバー部材４８の上部に燃料電池３の図示しない補機類が配置されている。   A front cover member 46 that forms a space 45 between the front stack frame 31 and the lower wall 26 of the box body 21 is provided on the front side, and the lower wall 26 of the box body 21 is provided on the rear side of the rear stack frame 32. A rear cover member 48 that forms a space portion 47 is attached to each other, and each space portion 45, 47 is also filled with a vibration isolating material 49 made of a foamed resin material. The front cover member 46 and the rear cover member 48 are lower in height than the upper surface of the sandwich panel 41, and the fuel cell 3 is not shown on the upper side of the front cover member 46 and the rear cover member 48. Equipment is arranged.

上記実施形態によれば、前記燃料電池３は前記サイドレインフォース２９、２９に跨るようにして前記ボックス本体２１の下壁２６の車幅方向に設けた前側スタックフレーム３１と後側スタックフレーム３２とに支持されている。したがって、燃料電池３は前記サイドレインフォース２９により形成された車体前後方向の骨格部２８と、前側スタックフレーム３１と後側スタックフレーム３２とで形成された骨格部３５とによって支持されることとなる。よって、燃料電池３を確実に燃料電池システムボックス５に安定して固定することができる。   According to the above embodiment, the fuel cell 3 includes the front stack frame 31 and the rear stack frame 32 provided in the vehicle width direction of the lower wall 26 of the box body 21 so as to straddle the side drain forces 29, 29. It is supported by. Accordingly, the fuel cell 3 is supported by the frame portion 28 formed in the longitudinal direction of the vehicle body formed by the side drain force 29 and the frame portion 35 formed by the front stack frame 31 and the rear stack frame 32. . Therefore, the fuel cell 3 can be reliably fixed to the fuel cell system box 5 reliably.

また、前記燃料電池３の下方には前側スタックフレーム３１と後側スタックフレーム３２とに跨るようにしてサンドイッチパネル４１が接合され、サンドイッチパネル４１とボックス本体２１の下壁２６との間には空間部４０が形成され、この空間部４０に防振材４４が充填されている。よって、燃料電池３の下方に位置するボックス本体２１の下壁２６が振動しても、この振動は前記防振材４４により吸収されるため、燃料電池３にこの振動が伝達されるのを防止できる。よって、燃料電池３を振動から保護できると共に車室内の静粛性を向上することができる。   A sandwich panel 41 is joined below the fuel cell 3 so as to straddle the front stack frame 31 and the rear stack frame 32, and a space is provided between the sandwich panel 41 and the lower wall 26 of the box body 21. A portion 40 is formed, and the space portion 40 is filled with a vibration isolating material 44. Therefore, even if the lower wall 26 of the box main body 21 located below the fuel cell 3 vibrates, the vibration is absorbed by the vibration isolator 44, so that the vibration is prevented from being transmitted to the fuel cell 3. it can. Therefore, it is possible to protect the fuel cell 3 from vibration and improve the quietness of the vehicle interior.

ここで、前記防振材４４は前側スタックフレーム３１と後側スタックフレーム３２に固定されたサンドイッチパネル４１により覆われているため、サンドイッチパネル４１の支持剛性が高められ、サンドイッチパネル４１の面振動をも抑えることができ、この点でも静粛性を向上することができる。   Here, since the vibration isolator 44 is covered with the sandwich panel 41 fixed to the front stack frame 31 and the rear stack frame 32, the support rigidity of the sandwich panel 41 is enhanced, and the surface vibration of the sandwich panel 41 is reduced. In this respect, the quietness can be improved.

そして、前記前側スタックフレーム３１の前側には、前側カバー部材４６とボックス本体２１の下壁２６との間に形成された空間部４５に防振材４９が充填され、後側スタックフレーム３２の後側には、後側カバー部材４８とボックス本体２１の下壁２６との間に形成された空間部４７に防振材４９が充填されている。そのため、この部分においてもボックス本体２１の下壁２６の面振動を確実に抑えることができ、その結果、車室内の静粛性をより一層向上できる。また、前側カバー部材４６と後側カバー部材４８の上に配置された補機類への振動伝達が防止されるので、これらを振動から保護できる。   The front side of the front stack frame 31 is filled with a vibration isolating material 49 in a space 45 formed between the front cover member 46 and the lower wall 26 of the box body 21, and the rear stack frame 32 has a rear side. On the side, a vibration isolator 49 is filled in a space 47 formed between the rear cover member 48 and the lower wall 26 of the box body 21. Therefore, also in this portion, the surface vibration of the lower wall 26 of the box body 21 can be surely suppressed, and as a result, the quietness in the passenger compartment can be further improved. Further, since vibration transmission to the auxiliary devices arranged on the front cover member 46 and the rear cover member 48 is prevented, these can be protected from vibration.

この発明の実施形態の燃料電池自動車の側面透視図である。1 is a side perspective view of a fuel cell vehicle according to an embodiment of the present invention. この発明の実施形態の要部平面説明図である。It is principal part plane explanatory drawing of embodiment of this invention. 図２のＡ−Ａ線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 燃料電池システムボックスの分解斜視図である。It is a disassembled perspective view of a fuel cell system box. 燃料電池を取り付けたボックス本体の平面図である。It is a top view of the box main body which attached the fuel cell. ボックス本体の平面図である。It is a top view of a box main body. 図６のＢ−Ｂ線に沿う断面図である。It is sectional drawing which follows the BB line of FIG. 図６のＣ−Ｃ線に沿う断面図である。It is sectional drawing which follows the CC line of FIG.

符号の説明Explanation of symbols

３ 燃料電池
５ 燃料電池システムボックス
２６ 下壁（下面）
３１ 前側スタックフレーム（骨格部材）
３２ 後側スタックフレーム（骨格部材）
４１ サンドイッチパネル（プレート）
４４ 防振材 3 Fuel cell 5 Fuel cell system box 26 Lower wall (lower surface)
31 Front stack frame (frame member)
32 Rear stack frame (frame member)
41 Sandwich panel (plate)
44 Anti-vibration material

Claims (2)

水素と酸素の電気化学反応によって発電する燃料電池及びその補機類を収納する燃料電池システムボックスを搭載した燃料電池自動車において、前記燃料電池システムボックスの下面に車幅方向に延びる骨格部材を前側と後側に設け、これら前側と後側の骨格部材に燃料電池の両端部を固定すると共に、前後の骨格部材間に防振材を設けたことを特徴とする燃料電池自動車。   In a fuel cell vehicle equipped with a fuel cell system box that houses a fuel cell that generates electricity by electrochemical reaction of hydrogen and oxygen and its auxiliary equipment, a skeleton member extending in the vehicle width direction on the lower surface of the fuel cell system box is defined as a front side. A fuel cell automobile characterized in that it is provided on the rear side, both ends of the fuel cell are fixed to the front and rear skeleton members, and a vibration isolating material is provided between the front and rear skeleton members. 前記防振材を前記前後に設けた骨格部材に固定されたプレートにより覆うことを特徴とする請求項１記載の燃料電池自動車。   The fuel cell vehicle according to claim 1, wherein the vibration isolator is covered with a plate fixed to a skeleton member provided at the front and rear.
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