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Patent
Ningde Amperex Technology Ltd | Date: 2015-06-02

The present disclosure provides a cell and a preparation method thereof. The cell comprises a positive electrode plate (


Patent
Ningde Amperex Technology Ltd | Date: 2015-06-02

The present disclosure provides a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The preparation method of the lithium-rich electrode plate of the lithium-ion battery comprises steps of: (1) in a protective gas environment, melting a lithium ingot to obtain a melting lithium; (2) in a vacuum environment, heating and drying ceramic particles to obtain dried and anhydrous ceramic particles; (3) in a protective gas environment, adding the dried and anhydrous ceramic particles into the melting lithium, stirring to make them uniformly mixed to obtain a modified melting lithium; (4) in a protective gas environment, uniformly coating the modified melting lithium on a surface of an electrode plate to be lithium rich to form a lithium-rich layer, which is followed by cooling to room temperature to obtain a lithium-rich electrode plate of a lithium-ion battery. The lithium-rich electrode plate is prepared according to the preparation method.


Patent
NingDe Amperex Technology Ltd and DongGuan Amperex Technology Ltd | Date: 2015-02-12

The present invention belongs to the technical field of lithium-ion secondary batteries and in particularly relates to a lithium-ion secondary battery and the gel electrolyte formula thereof. The gel electrolyte formula comprises 90-99.4% by weight of a liquid electrolyte, 0.5-3% by weight of a monomer, 0.25-0.6% by weight of a cross-linking agent and 0.1-1.5% by weight of an initiator, wherein the monomer is modified polyvinyl alcohol and the derivates thereof, the average molecular weight of which is 510


Patent
Ningde Amperex Technology Ltd | Date: 2015-06-02

The present disclosure provides a preparation method of non-rectangular laminated cell, which comprises steps of: preparing k kinds of laminated cell units, wherein there are at least two kinds of laminated cell units adopting different electrode plate assemblies which are different in shape and/or size; laminating the k kinds of laminated cell units. The preparation of the i-th (i=1, 2 . . . k) kind of laminated cell unit comprises substeps of: providing a laminated pack: the laminated pack comprises n


Patent
Ningde Amperex Technology Ltd | Date: 2015-06-02

The present disclosure provides a preparation method of a laminated cell comprising: providing a laminated pack: the laminated pack comprises n laminated groups, the each laminated group comprises m electrode plate assemblies, a spacer is provided between the adjacent laminated groups, the electrode plate assemblies of all the laminated groups of the laminated pack and the spacers between the adjacent laminated groups are orderly positioned in a Z-shaped separator in a laminating direction, an upper part and a lower part of the separator adjacent to the each spacer are separated by the each spacer; forming a laminated cell: the separator is broken at an end of the each spacer positioned in the separator to allow the each spacer and the each laminated group to separate from each other, so as to obtain the corresponding laminated cell formed by the electrode plate assembly of the each laminated group and the corresponding separator.

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