A battery module comprising: a housing, comprising a containing chamber with an opening; a battery stack, disposed in the containing chamber and comprising two or more batteries with a first vent plate and electrically connected to each other; the battery module is characterized by further comprising: a cover plate assembly connected to the housing, wherein the cover plate assembly comprises a plate, a deformable plate and a module output, the plate is arranged to close the opening, the deformable plate is connected to the plate and is deformable in a thickness direction of the plate, the module output is connected to the plate and is disposed opposite to the deformable plate, the module output and the battery stack are electrically connected; a guiding component disposed between the cover plate assembly and the battery stack, wherein the guiding component comprises a guiding channel and an exhaust port, the guiding channel is disposed opposite to the deformable plate and the exhaust port is disposed opposite to the first vent plate, the guiding channel and the exhaust port are connected with each other, and the gas released after the first vent plate is opening flows to the deformable plate through the exhaust port and the guiding channel such that the deformable plate is flapped and electrically connected to the module output to short-circuit the battery stack. a housing, comprising a containing chamber with an opening; a battery stack, disposed in the containing chamber and comprising two or more batteries with a first vent plate and electrically connected to each other; the battery module is characterized by further comprising: a cover plate assembly connected to the housing, wherein the cover plate assembly comprises a plate, a deformable plate and a module output, the plate is arranged to close the opening, the deformable plate is connected to the plate and is deformable in a thickness direction of the plate, the module output is connected to the plate and is disposed opposite to the deformable plate, the module output and the battery stack are electrically connected; a guiding component disposed between the cover plate assembly and the battery stack, wherein the guiding component comprises a guiding channel and an exhaust port, the guiding channel is disposed opposite to the deformable plate and the exhaust port is disposed opposite to the first vent plate, the guiding channel and the exhaust port are connected with each other, and the gas released after the first vent plate is opening flows to the deformable plate through the exhaust port and the guiding channel such that the deformable plate is flapped and electrically connected to the module output to short-circuit the battery stack. a cover plate assembly connected to the housing, wherein the cover plate assembly comprises a plate, a deformable plate and a module output, the plate is arranged to close the opening, the deformable plate is connected to the plate and is deformable in a thickness direction of the plate, the module output is connected to the plate and is disposed opposite to the deformable plate, the module output and the battery stack are electrically connected; a guiding component disposed between the cover plate assembly and the battery stack, wherein the guiding component comprises a guiding channel and an exhaust port, the guiding channel is disposed opposite to the deformable plate and the exhaust port is disposed opposite to the first vent plate, the guiding channel and the exhaust port are connected with each other, and the gas released after the first vent plate is opening flows to the deformable plate through the exhaust port and the guiding channel such that the deformable plate is flapped and electrically connected to the module output to short-circuit the battery stack.