Electrode assembly and manufacturing method therefor, battery cell, battery, and power consuming device
AssigneeContemporary Amperex Technology (Hong Kong) Limited
InventorsShuangjuan Peng, Haihe Xiao, Xiaowen Zhang, Baiqing Li, Haizu Jin
Life of this patent
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Abstract
An electrode assembly and a manufacturing method therefor, a battery cell, a battery, and a power consuming device are described. The electrode assembly includes: a first electrode plate; a first separator; and a second separator. The second separator and the first separator are located on two opposite sides of the first electrode plate in a thickness direction, and the first separator and the second separator are both turned over and enclose an edge of the first electrode plate that is provided with no tab. On this basis, the safety performance of the battery can be effectively improved.
Claims20
An electrode assembly comprising:
- a first electrode plate;
- a first separator;
- a second separator, wherein the second separator and the first separator are located on two opposite sides of the first electrode plate in a thickness direction, and the first separator and the second separator are both turned over and enclose an edge of the first electrode plate that is provided with no tab;
- and
- a second electrode plate, the second electrode plate has an opposite polarity to the first electrode plate and is stacked together with the first electrode plate, and the first separator and the second separator separate the second electrode plate from the first electrode plate;
- wherein
- the first electrode plate is folded once in a first direction (Y) such that the first electrode plate comprises two first stack sections connected to each other, and
- the second electrode plate is repeatedly folded in a second direction (X), the first direction (Y) being perpendicular or parallel to the second direction (X);
- such that the second electrode plate comprises a plurality of second stack sections connected and stacked in sequence;
- and
- a plurality of folded first electrode plates are inserted into the second electrode plate such that the first stack sections and the plurality of second stack sections are stacked alternately in sequence.
A method for manufacturing an electrode assembly comprising the steps of:
- providing a first electrode plate;
- and
- providing a first separator and a second separator on two opposite sides of the first electrode plate in a thickness direction, and turning over both the first separator and the second separator to enclose an edge of the first electrode plate that is provided with no tab;
- the method further comprising:
- folding the first electrode plate, which is enclosed by the first separator and the second separator that are turned over, once in a first direction (Y) such that the first electrode plate comprises two first stack sections connected to each other;
- providing a second electrode plate, and repeatedly folding the second electrode plate in a second direction (X) such that the second electrode plate comprises a plurality of second stack sections connected and stacked in sequence, the second direction (X) being perpendicular or parallel to the first direction (Y);
- and
- inserting a plurality of first electrode plates into the second electrode plate such that the first stack sections and the plurality of second stack sections are stacked alternately in sequence.
Dependencies are inferred from the claim text.