Lg Energy Solution, Ltd.

Lg Chem, Ltd

Gyu Ok Hwang

Joon Sung Bae

In Young Cha

Hong Kyu Park

Sung Hoon Yu

Soo Ji Hwang

Ju Ho Chung

Nak Gi Sung

Ju Kyung Shin

Seung Youn Choi

Ju Hyeon Cho

A method of activating a battery cell and a method of manufacturing a battery cell including the same, and more particularly, to a battery cell activation method capable of easily discharging gas trapped between a separator and an electrode inside an electrode assembly of a battery cell, and preventing discharge of a large amount of electrolyte solution during a gas discharging process, and a method of manufacturing a battery cell including the same.

Battery cell activation method and battery cell manufacturing method comprising same

The present invention relates to a method for activating a secondary battery. The present invention comprises: a primary charging step of charging a secondary battery including a positive electrode, a negative electrode, a separator, and an electrolyte; a room temperature-aging step of storing, at a room temperature, the secondary battery that has undergone the primary charging step; and a high temperature-aging step of storing, at a high temperature, the secondary battery that has undergone the room temperature-aging step, wherein charging/discharging is performed by alternately applying + current and − current to the secondary battery at the end of the primary charging step. The method for activating a secondary battery according to the present invention includes alternately applying + current and − current to the secondary battery at the end of the primary charging step to stabilize an SEI film, thereby shortening a following-up aging time.

Method for activating secondary battery

A press jig includes a pair of plate-shaped members, each of which includes a plurality of protrusions spaced apart from each other on a surface thereof, the protrusions being configured to come into contact with the secondary battery when pressed; and a heating unit that heats the protrusions formed on the plate-shaped member. A method of manufacturing a secondary battery using the same is also provided.

Press jig and method of manufacturing secondary battery using same

A jig for pressing a gas analysis monocell according to the present invention comprises: a first plate and a second plate which face each other with a monocell therebetween; a first auxiliary pad positioned between the first plate and the monocell; and a second auxiliary pad positioned between the second plate and the monocell, wherein the first plate and the second plate are formed of a thermosetting resin. When analyzing a gas generated from the monocell during a primary charge, the jig for pressing the monocell according to the present invention presses the thin monocell to prevent a gap from forming between electrodes due to the primary charge, and thus has an effect of deriving more reliable analysis results.

Jig for pressing gas analysis monocell, and gas analysis device including same

The present invention relates to an electrolyte impregnation apparatus comprising: a pressing unit comprising a pressing plate that presses a battery cell in which an electrode assembly and an electrolyte are accommodated; and an ultrasonic vibration unit installed to a portion or the whole of the pressing plate to apply ultrasonic vibration to the battery cell.

Electrolyte impregnation apparatus

The present disclosure provides a positive electrode material comprising: a positive electrode active material mixture comprising a positive electrode active material prepared with an active material precursor and a lithium compound, a conductive agent and a binder; and an active material precursor as an additive, in which the active material precursor as the additive is a same substance as the active material precursor as a material of the positive electrode active material.

Growing community of inventors

Daejeon, South Korea

Gyu Ok Hwang