Battery cell, battery and electrical device

A battery, comprising a battery cell;

• the battery cell comprising an electrode assembly and a housing for accommodating the electrode assembly;
• the electrode assembly comprising a positive electrode plate, a negative electrode plate and a separator stacked together along a stacking direction;
• the separator being provided between the positive electrode plate and the negative electrode plate;
• wherein the positive electrode plate comprises at least one first positive electrode plate, at least one second positive electrode plate, a first positive electrode tab extending outwards from an edge of each first positive electrode plate, and a second positive electrode tab extending outwards from an edge of each second positive electrode plate;
• the each first positive electrode plate comprising a first positive electrode current collector and a first positive electrode active material layer provided on the first positive electrode current collector, the first positive electrode current collector comprising a polymer layer and a conductive layer, the conductive layer being provided on at least one of two opposite surfaces of the polymer layer in a thickness direction of the electrode assembly;
• the each second positive electrode plate comprising a second positive electrode current collector and a second positive electrode active material layer provided on the second positive electrode current collector, the second positive electrode current collector being made of a metal material.

An electrical device, comprising a battery and a load, the battery being used for supplying power to the load:

• the battery comprising a battery cell;
• the battery cell comprising an electrode assembly and a housing for accommodating the electrode assembly:
• the electrode assembly comprising a positive electrode plate, a negative electrode plate and a separator stacked together along a stacking direction;
• the separator being provided between the positive electrode plate and the negative electrode plate;
• wherein the positive electrode plate comprises at least one first positive electrode plate, at least one second positive electrode plate, a first positive electrode tab extending outwards from an edge of each first positive electrode plate, and a second positive electrode tab extending outwards from an edge of each second positive electrode plate;
• the each first positive electrode plate comprising a first positive electrode current collector and a first positive electrode active material layer provided on the first positive electrode current collector, the first positive electrode current collector comprising a polymer layer and a conductive layer, the conductive layer being provided on at least one of two opposite surfaces of the polymer layer in a thickness direction of the electrode assembly;
• the each second positive electrode plate comprising a second positive electrode current collector and a second positive electrode active material layer provided on the second positive electrode current collector, the second positive electrode current collector being made of a metal material.