Front floor lower beam connecting structure of battery-changing type electric vehicle body

The invention discloses a front floor lower beam connecting structure of a battery-changing type electric vehicle body. The front floor lower beam connecting structure comprises a vehicle body front floor, a front floor lower beam is arranged in front below the vehicle body front floor, the two ends of the front floor lower beam are fixedly connected with front floor side longitudinal beams, the middle of the front floor lower beam is fixedly connected with a middle channel, the rear ends of vehicle body front longitudinal beams are fixedly connected with the front floor lower beam, and the front ends of front floor inner longitudinal beams are fixedly connected with the front floor lower beam. The front floor lower beam connecting structure is simple, convenient to assemble and reliable to use, and installs and fixes a vehicle battery pack without substantially changing a traditional vehicle body structure, meanwhile, longitudinal and transverse rigidity of the lower portion of an electric vehicle body floor is guaranteed, the performance of resisting front face and side face collision of the vehicle body is effectively improved, the safety and the stability of an electric vehicle are improved, the manufacturing cost of the electric vehicle is lowered, and the consumed tooling time for the electric vehicle is shortened.