Single core with multipolar terminals and lithium battery with the single core

摘要

A single-winding core having a multi-pole terminal that is easy to assemble and has improved conductivity when a lithium battery equipped with a single-winding core and combined with a single-winding core in a housing has a large current discharging capability Provided is a lithium battery including the single volume. A positive electrode section 21 on the surface of a positive electrode piece 2 and a negative electrode section 31 on the surface of a negative electrode piece 3 correspond to each other, and a plurality of positive electrode terminals 22 are provided on one side of the positive electrode piece 2. A plurality of negative electrode terminals 32 are provided on one side of the negative electrode piece 3. The positions of the plurality of negative electrode terminals and the plurality of positive electrode terminals cross each other, and the positive electrode piece 2, the first separator film 4, the negative electrode piece 3, and the second separator film 4 'are sequentially overlapped and wound in succession. After being attached, the plurality of positive electrode terminals are concentrated in the positive electrode terminal group, and the plurality of negative electrode terminals are concentrated in the negative electrode terminal group, so that the single core 1 has the capability of large current discharge, A single core is installed in the lithium battery case. [Selection] Figure 1