Plastics fuel cell

The utility model relates to a plastics fuel cell, its characterized in that, its wall include that the both sides welding is regional in the both sides welding region, the internal surface of the wall of fuel cell also welds with outer member with inner member welding and surface. It is regional to have benefited from this both sides welding, can be on the inside and outside wall in the same region of fuel cell weld element all, can reduce the design constraint of fuel cell to inside and outside component can arrange compactlyer that the volume of fuel cell also can reduce from this. 本实用新型涉及一种塑料燃料箱，其特征在于，其壁包括双面焊接区域，在所述双面焊接区域内，燃料箱的壁的内表面与内部元件焊接且外表面也与外部元件焊接。得益于该双面焊接区域，能够在燃料箱同一区域的内外壁上都焊接元件，对燃料箱的设计约束得以降低，并且内外元件可以更加紧凑地布置，由此燃料箱的体积也得以减小。