Battery negative electrode assembly, manufacturing method thereof, battery cell and battery

The invention discloses a battery negative electrode assembly and a manufacturing method thereof, a battery cell and a battery, the battery negative electrode assembly comprises a negative electrode tab and at least two negative electrode plates wrapping the negative electrode tab therein, so that on one hand, the negative electrode assembly in which the negative electrode tab and a current collector are wrapped therein has a high proportion of the area of the current collector to the area of the whole negative electrode, so that the current collection effect is excellent; the battery discharges until the later negative electrode reaction is uniform and sufficient, and the utilization rate is extremely high; and on the other hand, when the battery is manufactured, compared with a winding process, inactive substance materials are greatly reduced, the battery volume and gravimetric specific energy are improved, the utilization rate and the capacity of active substances of the battery can be effectively improved