Abstract: A battery pack includes a battery pack casing, a battery cell, a barrier assembly and a filling layer, the battery cell is located in the battery pack casing and has a pole end face and an explosion-proof valve on the pole end face; the barrier assembly is installed on the battery cell and is between the pole end face and an inner surface of the battery pack casing, the inner surface of the battery pack casing, the pole end face and the barrier assembly jointly define an exhaust channel, and the explosion-proof valve is in the exhaust channel; and the filling layer is located outside the exhaust channel and is used for filling a gap between at least part of an outer surface of the battery cell and at least part of the inner surface of the battery pack casing, the filling layer is made of an adhesive colloid.

Abstract: A battery module includes: a housing including a mounting space; at least one electrode core assembly disposed in the mounting space; and a glue container connected with the at least one electrode core assembly and located in the mounting space, where the glue container includes a groove with an open end, and the open end of the groove is spaced apart from a top surface or a bottom surface of the housing.

Abstract: A battery includes a housing and multiple electrode core assemblies disposed in the housing. Two adjacent electrode core assemblies are connected in series, each of the electrode core assemblies includes an encapsulation film and one electrode core, and the one electrode core is disposed in an accommodating cavity formed by the encapsulation film. Each of the electrode core assemblies includes a first electrode and a second electrode protruding out of the encapsulation film for leading out a current, a first electrode of a first electrode core assembly is connected to a second electrode of the a second electrode core assembly of the two adjacent electrode core assemblies, a gap between the two adjacent electrode core assemblies is filled with an insulating material to form an insulating spacer between the two adjacent electrode core assemblies, and a connection part of the two adjacent electrode core assemblies is arranged in the insulating spacer.