Battery box lower shell with thermal runaway channel

The utility model discloses a battery box lower shell with a thermal runaway channel, which comprises a first tray, a second tray and a thermal runaway channel, a gap is formed between the second tray and the first tray to form a release channel; the second tray is further provided with an outlet. According to the application, the thermal runaway channel is arranged, after the battery monomers are in thermal runaway, heat can be transferred to the release channel between the first tray and the second tray through the release hole and then is transferred to the outside through the outlet, and the heat can be transferred to the external environment in time after the battery monomers are in thermal runaway; and combustion and even explosion caused by too high temperature in the battery box are effectively avoided. 本实用新型公开了一种具有热失控通道的电池箱下壳体，包括：第一托盘，所述第一托盘上开设有释放孔；第二托盘，其与所述第一托盘之间具有间隙以形成一释放通道；所述第二托盘上还开设有出口。本申请中，设置热失控通道，当电池单体热失控之后，热量能够通过释放孔传递至第一托盘和第二托盘之间的释放通道，而后由出口传出外部，能够在电池单体热失控之后及时将热量传递至外部环境中，有效避免电池箱内的温度过高引发燃烧甚至爆炸。