Patent ID: 9583782
Date: 2017-02-28
CPC Classifications: H01M,Y02E,Y02P,Y10T

Claim:
1. A battery, comprising: a casing including a bottom surface and a top surface, wherein the bottom surface and the top surface of the casing are not symmetrical with each other, wherein the casing is divided into at least a first area and a second area, a distance between the bottom surface and the top surface in the first area defines a first height, and the top surface is sloped relative to the bottom surface throughout the entire second area so that a distance between the bottom surface and the top surface in the second area decreases progressively along a direction away from the first area throughout the entire second area; a plurality of cell coils including a first cell coil and a second cell coil disposed in the casing and electrically connected to each other, wherein each of the cell coils includes at least a positive node, at least a negative node, and at least an insulation sheet, wherein the insulation sheet is between the positive node and the negative node; the first cell coil is disposed in the first area and the second cell coil is disposed in the second area; an outer diameter of the first cell coil corresponds with the first height, an outer diameter of the second cell coil corresponds with the distance between the bottom surface and the top surface in the second area; wherein the first cell coil and the second cell coil are wound with the same positive node, the same negative node and the same insulation sheet.