Dongguan Amperex Technology Limited

Zettawatt Energy (Changzhou) Technology Co., Ltd

Conghui You

Hongxin Fang

Peipei Guo

Chen Zhang

Wei Lv

BaiQing Zhang

Ying Tao

Shaoyu Chen

Jinzhen Bao

Chunjiang Xiang

Jianqun Xiong

Zhong Shi

Huali Zhou

Yanjie Xu

Fubiao Cao

Feiyu Kang

Dong Duan

Quanhong Yang

Baohua Li

The present application provides a lithium-ion battery, which comprises: a wound-type cell formed by winding a positive electrode plate, a separator and a negative electrode plate, a width of the separator is greater than widths of the positive electrode plate and the negative electrode plate; an electrolyte; and a packaging film packaging the wound-type cell and accommodating the electrolyte; a wound ending of the wound-type cell is adhered with a single-sided adhesive layer, an adhesive of the single-sided adhesive layer is a flowable curing adhesive, the wound-type cell and the packaging film are adhered together by the curing adhesive which flows and flows out from a periphery of the single-sided adhesive layer. The single-sided adhesive layer can prevent the wound-type cell from loosening or deforming, rupturing of the positive electrode tab and the negative electrode tab and bursting open of a top-seal in the process of dropping or tumbling.

Lithium ion battery having tape with adhesive adhering wound-type cell to packaging film

The invention relates to a lithium-rich electrode plate of a lithium-ion battery and a preparation method thereof. The electrode plate includes a collector; a film containing an active material and forming on the collector, and forming an elementary electrode plate together with the collector; and a porous lithium sheet covering on the film, so that a resulting capacity of the porous lithium sheet matches a planned lithium-supplemental capacity to an anode of a lithium-ion battery. The electrode plate can accurately control lithium supplemental quantity to the anode, improve lithium-supplemental uniformity, improve the first coulombic efficiency, energy density, and electrochemical performance of the battery, and decrease deformation of the cell. Furthermore, the method can be performed simply and the cost thereof is low.

Lithium-rich electrode sheet of lithium-ion battery and preparation method thereof

The present invention belongs to the technical field of lithium ion battery production equipment, and particularly relates to a double-folding device for softly-packaged lithium ion batteries, comprising a rack, and a loaded-material positioning mechanism, a primary folding mechanism and a secondary folding mechanism which are arranged on the rack in turn. A bonding layer arrangement mechanism is further provided between the primary folding mechanism and the secondary folding mechanism. In comparison to the prior art, in the present invention, by providing, between the primary folding mechanism and the secondary folding mechanism, a bonding layer arrangement mechanism which is configured as a mechanism capable of online monitoring the arrangement of a bonding layer and automatically adjusting the glue dispensing position and glue volume, the real-time adjustment of the dispensing position and volume of glue is realized.

Double-folding device for softly-packaged lithium ion batteries

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Dongguan, China

Conghui You