Electric automobile battery supporting mechanism and electric automobile

The utility model discloses an electric automobile battery supporting mechanism used for holding an electric automobile battery box. The electric automobile battery supporting mechanism comprises an upper cover, a lower supporting box body and a hydraulic connecting mechanism. The hydraulic connecting mechanism controls longitudinal opening and closing of the upper cover and the lower supporting box body. Three box-wall sides of the lower supporting box body are fixed and one box-wall side can be opened and closed. A side wall of the upper cover is welded to an electric automobile chassis. An electricity-contacting terminal suitable for the automobile battery box is arranged in box walls of the lower supporting box body. As the battery supporting mechanism of the electric automobile chassis is welded, the battery supporting mechanism controls opening and closing of the upper cover and the lower supporting box body through the hydraulic connecting mechanism to achieve placing and drawing of batteries. The arrangement of the batteries overcomes the technical problems that installation and replacement of the batteries in the electric automobile rear seat or a rear trunk in the prior art are poor in balancing property, occupy space which can be utilized by automobiles and are low in safety property.