LITHIUM-ION POWER BATTERY

摘要

A lithium-ion power battery includes at least two wound cores (10) fabricated by winding process, each wound core (10) has a positive electrode tab (11) and a negative electrode tab (12), and the positive electrode tab (11) and the negative electrode tab (12) of each wound core (10) are connected in parallel respectively. The wound cores (10) are cylindrical or rhombic. The lithium-ion power battery further includes a case (15), a positive electrode terminal (16) and a negative electrode terminal (17) provided on the case (15). The positive electrode tabs (11) of the wound cores (10) are electrically connected to the positive electrode terminal (16) after paralleling with each other, and the negative electrode tabs (12) of the wound cores (10) are electrically connected to the negative electrode terminal (17) after paralleling with each other.