High-pressure tank mounting structure
A high-pressure tank mounting structure includes: a case disposed beneath a floor of a vehicle cabin and having a bottom wall, a peripheral wall and a top wall; and a plurality of high-pressure tanks accommodated so as to be lined up within the case, wherein a first hydrogen collection portion that is recessed upwardly is formed at a back surface of the top wall of the case, and a hydrogen sensing sensor is disposed at the first hydrogen collection portion.
1. A high-pressure tank mounting structure comprising:
a case disposed beneath a floor of a vehicle cabin and having a bottom wall, a peripheral wall and a top wall; and
a plurality of high-pressure tanks accommodated so as to be lined up within the case,
wherein a first hydrogen collection portion that is recessed upwardly is formed at a back surface of the top wall of the case, and
wherein a hydrogen sensing sensor is disposed at the first hydrogen collection portion.
2. The high-pressure tank mounting structure of claim 1 , further comprising a discharging mechanism discharging, to an exterior of the case, hydrogen that has been accumulated at the first hydrogen collection portion.
3. The high-pressure tank mounting structure of claim 2 , wherein the discharging mechanism comprises:
a discharge hole ( 83 ) that communicates an interior of the case with the exterior of the case;
a shutter that opens and closes the discharge hole; and
a control section that controls opening and closing of the shutter in accordance with output of the hydrogen sensing sensor.
4. The high-pressure tank mounting structure of claim 1 , wherein the first hydrogen collection portion is positioned at a vehicle longitudinal direction central portion and a vehicle transverse direction central portion of the top wall.
5. The high-pressure tank mounting structure of claim 1 , wherein a guide portion, which is inclined downwardly toward an outer edge portion of the top wall, is formed at at least one of a front side, a rear side, a right side and a left side of the first hydrogen collection portion.
6. The high-pressure tank mounting structure of claim 5 , wherein a second hydrogen collection portion, which is recessed upwardly and is positioned further toward a vehicle lower side than the first hydrogen collection portion, is formed at a back surface of an outer peripheral portion of the top wall.
7. The high-pressure tank mounting structure of claim 1 , wherein guide portions, which are inclined downwardly toward outer edge portions of the top wall, are formed at all of a front side, a rear side, a right side and a left side of the first hydrogen collection portion.
8. The high-pressure tank mounting structure of claim 7 , wherein a second hydrogen collection portion, which is recessed upwardly and is positioned further toward a vehicle lower side than the first hydrogen collection portion, is formed at a back surface of an outer peripheral portion of the top wall.
9. The high-pressure tank mounting structure of claim 1 , wherein:
the first hydrogen collection portion is positioned at a vehicle transverse direction central portion of the top wall,
a guide portion, which is inclined downwardly toward an outer edge portion of the top wall, is formed at a front side or a rear side of the first hydrogen collection portion, and
as seen in a vehicle plan view, the first hydrogen collection portion and the guide portion are configured to overlap a tunnel portion of a floor panel that structures a floor portion of the vehicle cabin.
10. The high-pressure tank mounting structure of claim 9 , wherein a second hydrogen collection portion, which is recessed upwardly and is positioned further toward a vehicle lower side than the first hydrogen collection portion, is formed at a back surface of an outer peripheral portion of the top wall.