Battery core assembly, battery, battery pack and vehicle

A battery, comprising a casing and at least one battery core assembly disposed in the casing, wherein the at least one battery core assembly comprises an encapsulation film and electrode core assemblies disposed in the encapsulation film, wherein

• the electrode core assemblies are connected to form an electrode core string, and each of the electrode core assemblies comprises at least one electrode core;
• a first spacer is disposed between two adjacent electrode core assemblies, the first spacer divides an accommodating space inside the encapsulation film into accommodating cavities, cavity walls of the accommodating cavities comprise the first spacer and the encapsulation film connected to the first spacer, and the electrode core assemblies are respectively accommodated in the accommodating cavities;
• and
• the first spacer comprises two liquid reservoirs on two opposite sides of the first spacer each communicating with a different one of the accommodating cavities.

A vehicle, comprising a battery comprising a casing and at least one battery core assembly disposed in the casing, wherein the at least one battery core assembly comprises an encapsulation film and electrode core assemblies disposed in the encapsulation film, wherein

• the electrode core assemblies are connected to form an electrode core string, and each of the electrode core assemblies comprises at least one electrode core;
• a first spacer is disposed between two adjacent electrode core assemblies, the first spacer divides an accommodating space inside the encapsulation film into accommodating cavities, cavity walls of the accommodating cavities comprise the first spacer and the encapsulation film connected to the first spacer, and the electrode core assemblies are respectively accommodated in the accommodating cavities;
• and
• the first spacer comprises two liquid reservoirs on two opposite sides of the first spacer each communicating with a different one of the accommodating cavities.