| 摘要 |
The invention publishes a battery unit of coiling type soft packing lithium ion battery, the battery unit becomes the coiling body by the plus, minus pole piece and the membrane coiling, the coiling start end of the plus and minus pole piece separately has the pole ear connection area, and at least between the one coiling start end of the pole and the pole ear connection area has the orientation section. The invention also publishes the battery of the battery unit and its preparation method. Through installs the orientation section between the pole ear connectino area and the end of the pole piece, the invention can conveniently, accurately preestablishes the distance of the plus, minus pole piece by the width of the orientation section, has solved the difficulty control problem of the the ear spacing. |
