A method and system for protecting a battery power limit, and a storage medium are disclosed. The method for protecting a battery power limit is applied to a vehicle with a battery management system. The method includes: acquiring temperature data, a state...

A secondary battery, a preparation method, and an electric device. The secondary battery includes a positive electrode plate, a separator, a negative electrode plate and an electrolyte, where the negative electrode plate includes a lithium metal sheet and ...

A positive electrode active material, a secondary battery, and an electric device are disclosed. The positive electrode active material satisfies the following relationship: 300≤P*D/Δθ≤800; where P represents the porosity of the positive electrode ac...

A battery module and a battery pack, where the battery module has a first direction, a second direction and a third direction that intersect with each other pairwise. The battery module includes a plurality of single cells and a protective casing. The prot...

A battery cell and a battery module. The battery cell includes: a housing and an electrode assembly accommodated in the housing, where the electrode assembly includes a positive electrode sheet, a separator and a negative electrode sheet, which are arrange...