Vehicle body lower structure

A vehicle body lower structure comprising:

• a rocker arranged at a lower lateral part of a vehicle body and extending in a front-rear direction of the vehicle body;
• a power source arranged adjacent to the rocker;
• an energy absorbing member arranged under the rocker, the energy absorbing member being a hollow beam;
• and
• a collar penetrating an upper plate of the energy absorbing member and welded to the upper plate, wherein an upper end of the collar is in contact with the rocker and a lower end of the collar is in contact with a lower plate of the energy absorbing member,
• wherein
• the energy absorbing member includes a first vertical plate, a second vertical plate, a third vertical plate and a diagonal brace,
• the first vertical plate, the second vertical plate, and the third vertical plate connect the upper plate and the lower plate of the energy absorbing member to each other,
• the first vertical plate, the second vertical plate and the third vertical plate are arranged along a vehicle lateral direction such that the second vertical plate is positioned between the first vertical plate and the third vertical plate,
• the collar passes between the first vertical plate and the second vertical plate,
• the diagonal brace connects a first inner corner where the second vertical plate meets the upper plate and a second inner corner where the third vertical plate meets the lower plate, and
• a ratio of a thickness of the upper plate to a thickness of the collar is from 0.5 to 2.0.