Abstract: Disclosed is a secondary battery, comprising an electrode component, a case, a top cover component and a first insulating tape. The electrode component includes a first electrode unit. The first electrode unit is wound into a flat structure and has a first termination line formed at a winding tail-end; a negative plate of an outermost circle of the first electrode unit is located outside a positive plate of an outermost circle; and the first insulating tape at least covers a portion of the first termination line. A surface of the first electrode unit includes a first flat surface; the first flat surface is located at one end of the first electrode unit that is close to the first side wall in the thickness direction; and the first insulating tape is at least partially in close contact with the first flat surface.

Abstract: The present disclosure provides a secondary battery, which includes an electrode assembly, a case, a cap assembly and a first insulating tape. The electrode assembly comprises an electrode unit. The electrode unit comprises a positive electrode plate, a negative electrode plate and a separator. The electrode unit is a winding structure and in a flat shape, and an outermost turn of the negative electrode plate is positioned at an outer side of an outermost turn of the positive electrode plate. The case comprises a first side wall and an accommodating cavity, the electrode assembly is accommodated in the accommodating cavity, the case is electrically connected with the positive electrode plate, and the cap assembly is connected with the case. The first insulating tape is positioned between the electrode assembly and the first side wall and closely attached to an outer surface of the electrode assembly.

Abstract: The present application relates to an active equalization method and system of a lithium iron phosphate (LFP) battery pack.

Abstract: The present application relates to an active equalization method and system of a lithium iron phosphate (LFP) battery pack.

Abstract: The present application discloses a Li-ion battery positive electrode material, a method for preparing the same and application thereof. The positive electrode material can reduce the relative volume change rate of the positive electrode material in insertion and deinsertion states of Li ions, and meanwhile can efficiently restrain Mn in the positive material from dissolving out during charging and discharging cycles, thereby improving the crystal structure stability of the positive electrode in the working state. A Li-ion battery applying such a positive electrode material has excellent cycle performance, safety and high-temperature storage performance.