Structural beam, box, battery, and electric device

A battery, comprising:

• a plurality of battery cells;
• and
• a structural beam, the plurality of battery cells disposed on two sides of the structural beam,
• wherein the structural beam comprises:
• a first side wall and a second side wall, wherein an exhaust passage is formed between the first side wall and the second side wall;
• the first side wall is provided with a first exhaust portion, wherein the first exhaust portion is configured to receive emissions from at least one of the battery cells;
• and the second side wall is provided with a second exhaust portion, wherein the second exhaust portion is configured to receive emissions from at least another one of the battery cells;
• the structural beam is further provided with a reinforcing structure, wherein the reinforcing structure is disposed inside the exhaust passage and located between the first side wall and the second side wall, the reinforcing structure separates the exhaust passage into a first sub-passage and a second sub-passage, and the reinforcing structure is provided with a communicating hole communicating with the first sub-passage and the second sub-passage;
• the reinforcing structure comprises a first connecting end and a second connecting end opposite each other, wherein the first connecting end and the second connecting end are both connected to two opposite side walls of the structural beam;
• the first connecting end comprises a first sub-connecting portion and second sub-connecting portion arranged in a bifurcated manner, wherein the first sub-connecting portion is connected to the first side wall, and the second sub-connecting portion is connected to the second side wall;
• and
• the second connecting end comprises a third sub-connecting portion and fourth sub-connecting portion arranged in a bifurcated manner, wherein the third sub-connecting portion is connected to the first side wall, and the fourth sub-connecting portion is connected to the second side wall.