CN103370219B - 燃料电池车辆的排气装置 - Google Patents
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Abstract
为了实现将空气顺畅地引入燃料电池,要降低排气通路的空气流动阻力并且防止水侵入排气导管。在本发明中,在燃料电池车辆的排气装置中,排气室装配在前罩的下表面,排气导管从燃料电池箱的后部在竖直方向上向上延伸,在排气导管的上端的排气口向排气室的内部敞开,在前罩的车辆前后方向上排气口的前方的部分中形成有贯通孔,排气室的内部通过该贯通孔与外侧空间连通,贯通孔被盖子覆盖,并且在盖子中形成有开口部,该开口部向车辆后侧敞开并且位于前罩的上表面上方,并且离开前罩的上表面。
Description
技术领域
本发明涉及燃料电池车辆的排气装置。本发明尤其涉及能够实现燃料电池的顺畅进气和排气并且能够防止水侵入的燃料电池车辆的排气装置。
背景技术
在一种燃料电池车辆中,包括通过堆叠多个燃料电池单元形成的燃料电池堆的燃料电池被用作驱动能量源。在该燃料电池车辆中,通过使用进气导管,将空气作为反应气体提供给容纳在燃料电池箱中的燃料电池。在这之后,使空气与氢反应。通过包括排气装置的排气导管的排气通路,将从燃料电池排出的多余空气和多余氢气排放到车外。
由排气装置排出的空气冷却式燃料电池的废气包括比外界热的多余的氢和空气。结果,该废气比正常温度的空气轻。因此,在排气导管的排气口指向上的情况下,有助于废气的流动。此外,为了降低空气流动阻力,排气装置优选构造为使得排气导管的排气通路具有很少的弯曲和短的长度。然而,当排气口向上开口时,水易于侵入排气口。
关于燃料电池车辆的排气装置,以下技术被公开。
专利文献1公开了氢通风导管设置在燃料电池车辆的罩中。专利文献2公开了多个进气导管和排气导管结合到燃料电池单元的冷却导管。
现有技术文献
专利文献
专利文献1:日本特开2003-34267号公报
专利文献2:日本特开2001-229948号公报
发明内容
发明要解决的问题
然而,在专利文献1中公开的排气装置中,氢通风导管夹在罩的外面板和内面板之间。结果,氢通风导管具有小体积的内部空间,并且氢通风导管不足以起到使多余空气流出的排气通路的作用。此外,氢通风导管的内部空间包括多个管部、引导板等。结果,其结构复杂,并且压力损失增加。
在专利文献2中公开的排气装置中,冷却导管包括:用于切换冷却空气通路的多个切换阀;风扇;温度检测器件;以及用于切换阀和风扇的控制器件。结果,排气装置的构造复杂。此外,包括冷却导管和进气导管和排气导管的排气通路变得较长。结果,排气的压力损失增加。
本发明的目的是提供一种燃料电池车辆的排气装置,其能够通过降低排气通路的空气流动阻力实现将空气顺畅地引入到燃料电池中,并且能够防止水侵入排气导管。
用于解决问题的方案
本发明是燃料电池车辆的排气装置,包括:容纳燃料电池的燃料电池箱,所述燃料电池箱布置于形成在所述车辆的前部、被前罩从上方覆盖的空间中;进气导管和排气导管,它们连接至所述燃料电池箱;以及气体通路,其设置在所述燃料电池内部;其中所述进气导管和所述排气导管通过所述气体通路彼此连通;其中从所述燃料电池排出的多余空气和多余氢气通过包括所述排气导管的排气通路排放至车外;其中排气室装配在所述前罩的下表面;其中所述排气导管从所述燃料电池箱的后部在竖直方向上向上延伸;其中排气口设置在所述排气导管的上端,并且所述排气口向所述排气室的内部敞开;其中在所述前罩的在车辆前后方向上位于所述排气口前方的部分形成有贯通孔,并且所述排气室的内部通过所述贯通孔与外部空间连通;其中所述贯通孔被盖子覆盖;并且其中在所述盖子上形成有开口部,所述开口部位于所述前罩的上表面上方,离开所述前罩的上表面,并且所述开口部向所述车辆的后端敞开。
发明效果
关于本发明的燃料电池车辆的排气装置,排气通路的下游端部在前罩上方开口。结果,能够减小包括排气导管的排气通路的长度。因此,能够降低排气通路的空气流动阻力。因此,可以将多余空气和多余氢从燃料电池顺畅地排放到车外,并且可以将空气顺畅地引入进气导管。
关于本发明的燃料电池车辆的排气装置,排气通路的从排气导管的排气口延伸至盖子的开口部的部分是弯曲的,并且开口部位于前罩的上表面上方,离开前罩的上表面。因此,能够防止水从外侧侵入排气导管。
附图说明
图1是燃料电池车辆的前部的右视图。(实施方式)
图2是从右前上侧观察的前罩打开的该燃料电池车辆的排气装置的立体图。(实施方式)
图3是前罩的平面图。(实施方式)
图4是沿着图3的A-A线取得的截面图。(实施方式)
图5是从左后上侧观察的前罩的立体图。(实施方式)
具体实施方式
下面基于附图描述本发明的实施方式。
实施方式
图1至图5图示了本发明的实施方式。在图1和图2中,附图标记"1"指代燃料电池车辆,附图标记"2"指代前保险杠,附图标记"3"指代前格栅,附图标记"4"指代右侧面板,附图标记"5"指代左侧面板,附图标记"6"指代前围板,附图标记"7"指代前罩,附图标记"8"指代前舱。燃料电池车辆1是四轮车辆。燃料电池车辆1在形成于车辆前部的空间中设置有前舱8,该前部由前保险杠2、前格栅3、右侧面板4、左侧面板5和前围板6围成,此外,该前部被前罩7从上方覆盖。容纳燃料电池9的燃料电池箱10布置于前舱8中。
燃料电池箱10形成为大致方形箱状,该大致方形箱状在前后方向上薄,上下方向长于左右方向,并且燃料电池箱10具有箱空间11。燃料电池箱10布置于前舱8中,使得燃料电池箱10的前部12指向车辆前端,燃料电池箱10的后部13指向车辆后端。在燃料电池9中,多个燃料电池单元堆叠,结果,形成燃料电池堆。每个燃料电池9形成为大致方形箱状,该大致方形箱状在前后方向上薄,左右方向长于上下方向,并且在每个燃料电池9的内部设置有气体通路14(见图4)。两个燃料电池9安装在燃料电池箱9的箱空间11中,在车辆上下方向上其中一个布置于另一个的顶部,燃料电池9的空气引入表面15指向车辆前端,并且燃料电池9的空气排放表面16指向车辆后端。
燃料电池车辆1包括进气装置17和排气装置18。如图2中所示,在进气装置17中,两个进气导管19装配到燃料电池箱10的前部12,在车辆上下方向上其中一个布置于另一个的顶部。进气导管空间20设置在每个进气导管19的内部,进气导管空间20与燃料电池箱9的箱空间11连通,并且向车辆下端敞开的空气引入口21设置在进气导管空间20的下部。每个进气导管19从空气引入口21引入从前格栅3流入前舱8的空气。每个进气导管19通过进气导管空间20将该空气引导至燃料电池箱10的箱空间11。车辆外部的空气通过由进气导管19的进气导管空间20和燃料电池箱10的箱空间11形成的进气通路22提供给燃料电池9的空气引入表面15,作为反应气体和用于冷却的空气。
提供给每个燃料电池9的空气引入表面15的空气从气体通路14的内部送至阴极,然后,该空气在阳极与氢反应以生成电力。未与氢反应的多余空气在流过气体通路14的同时冷却燃料电池9。多余的氢混入多余的空气,并且多余的空气从空气排放表面16排出。因此,燃料电池9构造为空气冷却式燃料电池。
排气装置18布置于燃料电池箱10的后部13。如图1和图2中所示,在排气装置18中,排气风扇23设置成面向燃料电池9的空气排放表面16。两个排气导管24装配到燃料电池箱10的后部13,覆盖排气风扇23,同时在车辆宽度方向上并排布置而成。每个排气导管24形成为在竖直方向上延伸的管状。排气导管空间25设置在每个排气导管2的内部,排气导管空间25与燃料电池9的空气排放表面16连通。在每个排气导管24的上端设置有向上开口的排气口26。排气导管24将从燃料电池9的空气排放表面16排出的多余空气和多余氢引导至位于排气导管24上方的前罩7的下表面侧。
如图2和图4中所示,在燃料电池车辆1的排气装置18中,排气室27装配在前罩7的下表面,并且前罩7具有其车辆上下方向上的高度越朝向车辆前端其高度越小的形状。室空间30设置在排气室27的内部。室空间30与排气口26连通,并且室空间30由板状底表面部28和环形周壁部29形成为箱状。板状底表面部28在车辆上下方向上的高度沿着前罩7的下表面越朝向车辆前端其高度越小。环形周壁部29环绕底表面部28的外周,并且环形周壁部29装配在前罩7的下表面。两个插孔部31形成在排气室27的底表面部28上,并且排气导管24的排气口26插入插孔部31中。如图4中所示,两个排气导管24从燃料电池箱10的后部13在竖直方向上线性向上延伸。排气导管24的上端从插孔部31插入排气室27中,结果,排气口26向排气室27的室空间30的内部敞开。
如图3和图4中所示,在前罩7中,多个贯通孔32形成在车辆前后方向上排气导管24的排气口26前方的部分中,并且排气室27的内部通过贯通孔32与车辆外部空间连通。当从上方看前罩7时,四个贯通孔32形成在排气导管24的排气口26的车辆前方在车辆宽度方向上与排气口26错开的位置处。已经流入排气室27中的多余空气和多余氢被引导至车辆前侧的贯通孔32。
如图4和图5中所示,覆盖贯通孔32的盖子33设置在前罩7的上表面上。盖子33具有在盖子33和前罩7的上表面之间的盖子空间34,并且盖子空间34与贯通孔32连通。开口部35形成在前罩7的车辆后侧的端部,开口部35向车辆后侧敞开,并且开口部35位于前罩7的上表面上方,离开前罩7的上表面。在开口部35的整个宽度上向上突出的竖直壁部36设置在前罩7的上表面上的开口部35下方。结果,开口部35可以位于前罩7的上表面上方并且离开前罩7的上表面。已经从贯通孔32进入盖子33的盖子空间34的多余空气和多余氢从开口部35向车辆后侧排放。从燃料电池9排出的多余空气和多余氢通过排气通路37被排放到车外。注意,排气通路37由排气导管24的排气导管空间25、排气室27的室空间30和盖子33的盖子空间34形成。
在燃料电池车辆1的排气装置18中,盖子33的开口部35向车辆的后端敞开,并且开口部35位于前罩7的上表面上方,离开前罩7的上表面,同时在俯视图中,排气导管24的排气口26和前罩7的贯通孔32在车辆前后方向上和车辆宽度方向上彼此错开。因此,水不易于进入排气导管24。
因此,在排气装置18中,排气通路37的长度小于排气导管24弯曲成迷宫状以防止水侵入的结构的长度。结果,可以降低包括排气导管24的排气通路37的长度,并且可以降低排气通路37的空气流动阻力。排气装置18能够将多余空气和多余氢从燃料电池9顺畅地排放到车外,并且作为结果,能够将空气顺畅地引入到进气导管19中。
另外,在燃料电池车辆1的排气装置18中,排气通路37的一部分从排气导管24的排气口26经由排气室27和前罩7的贯通孔32延伸至盖子33的开口部35。排气通路37的该部分是弯曲的,并且开口部35的下边缘部由于从前罩7的上表面向上延伸的竖直壁部36而被定位成离开前罩7的上表面。因此,如图5的箭头所示,能够防止水从外侧侵入排气导管24。
如图3至图5中所示,在燃料电池车辆1的排气装置18中,在前罩7的上表面上,氢气排放部38设置在盖子33的开口部35的车辆后侧。氢气排放部38形成氢气排放口39。氢气排放口39贯穿该前罩,并且外侧空间与排气室27的内部的后部通过氢气排放口39彼此连通。在排气装置18中,氢气排放口39形成为,当从上方看前罩7时,向后侧敞开,在车辆宽度方向上位置与排气导管24的排气口26错位。氢气排放口39贯穿前罩7,并且外部空间与排气室27的内部通过氢气排放口39彼此连通。
因此,当氢气积聚在排气室27中室空间30后部的高位置时,在燃料电池9不工作的条件下,排气装置18能够将该氢气从氢气排放口39向后排放至车外。
如图2和图4中所示,在燃料电池车辆1的排气装置18中,排气室27的底表面部28具有在车辆上下方向上的高度越向车辆前侧其高度越低的形状。此外,排水口41由向下突出的排水部40形成在底表面部28的底表面部28高度最小的前部。将从排水口41流出的水引向下方的排流管42设置在排水口41下方。在排流管42的上端,设置有开口向上张开的漏斗状接收部43,并且排流管42装配在燃料电池箱10的与布置于前罩7下方的部件相对应的前部12。当前罩7打开时,排气室27的排水部40与排流管42的接收部43分开,当前罩7关闭时,排水部40插入到排流管42的接收部43中。
因此,在排气装置18中,当水侵入至排气室27时,水被引导至前侧并且通过底表面部28从排水口41流出,底表面部28具有其高度越朝向车辆前侧越低的形状,水被排流管42的接收部43接收,然后,水被引向下方。因此,防止水侵入至排气导管24。
工业应用性
本发明是燃料电池车辆的排气装置,其能够通过降低排气通路的空气流动阻力实现将空气顺畅地引入到燃料电池中,并且能够防止水侵入到排气导管中。本发明不仅能够应用于燃料电池车辆而且还能够应用于从汽车的罩的上表面排放气体的冷却排气导管。
附图标记列表
1燃料电池车辆
7前罩
8前舱
9燃料电池
10燃料电池箱
14气体通路
17进气装置
18排气装置
19进气导管
21空气引入口
22进气通路
23排气风扇
24排气导管
26排气口
27排气室
28底表面部
32贯通孔
33盖子
35开口部
36竖直壁部
37排气通路
39氢气排放口
41排水口
42排流管
Claims (3)
1.一种燃料电池车辆的排气装置,包括:
容纳燃料电池的燃料电池箱,所述燃料电池箱布置于形成在所述车辆的前部、被前罩从上方覆盖的空间中;
进气导管和排气导管,它们连接至所述燃料电池箱;以及
气体通路,其设置在所述燃料电池内部;
其中所述进气导管和所述排气导管通过所述气体通路彼此连通;
其中从所述燃料电池排出的多余空气和多余氢气通过包括所述排气导管的排气通路排放至车外;所述燃料电池车辆的排气装置的特征在于,
其中排气室装配在所述前罩的下表面;
其中所述排气导管从所述燃料电池箱的后部在竖直方向上向上延伸;
其中排气口设置在所述排气导管的上端,并且所述排气口向所述排气室的内部敞开;
其中在所述前罩的在车辆前后方向上位于所述排气口前方的部分形成有贯通孔,并且所述排气室的内部通过所述贯通孔与外部空间连通;
其中所述贯通孔被盖子覆盖;并且
其中在所述盖子上形成有开口部,所述开口部位于所述前罩的上表面上方,离开所述前罩的上表面,并且所述开口部向所述车辆的后端敞开。
2.根据权利要求1所述的燃料电池车辆的排气装置,其特征在于,
当从上方观看所述前罩时,在车辆宽度方向上与所述排气导管的所述排气口的位置错开的位置处形成有氢气排放口,
所述氢气排放口贯穿所述前罩,并且
所述排气室的内部和外侧空间通过所述氢气排放口彼此连通。
3.根据权利要求1所述的燃料电池车辆的排气装置,其特征在于,
所述排气室的底表面部形成为,所述底表面部的在车辆上下方向上的高度越朝向所述车辆的前端其高度越小,
排流口形成在所述底表面部的前部,
排流管装配到布置于所述前罩下方的部件上,并且
所述排流管将从所述排流口流出的流体引向下方。
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PCT/JP2012/055045 WO2012137560A1 (ja) | 2011-04-06 | 2012-02-29 | 燃料電池車両の排気装置 |
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