Samsung Sdi Co., Inc.

Kyeong-Beom Cheong

Sung-Soo Kim

Jake Kim

Seung Bum Suh

Ho-Yul Baek

Jong-Man Kim

Jeongsoon Shin

Cheol Ho Park

Hoyul Baek

Jae-Rok Kim

Younghwa Ko

Heekwan Chai

Sung-soo Kim

Joo Han Song

Eun-Jung Lee

Nam-Soon Choi

Dae-Yup Shin

Cheol-Ho Park

Ho-Seok Yang

Jin-Hyunk Lim

Yun-Hee Kim

Jeong-Soon Shin

Hee-Yeon Hwang

Jongman Kim

Seon-Hong Lee

Maeng-Eun Lee

Wonseok Kim

Dai-In Park

Su Dong Lee

Jang-Woo Lee

Inho Jung

Ho-Gon You

Jee-Won Kang

Bounggun Joung

Kwangki Baeg

Yongsic Kim

Nokap Park

Seung Ho Yang

Alexey Kashaev

Yoo-Hong Jang

Seung-Bum Suh

No-Kap Park

Hee-Kwan Chai

Young-Hwa Ko

Wonseock Kim

Boung Gun Joung

A rechargeable lithium battery includes a compound represented by Chemical Formula 1: In Chemical Formula 1, each of k, l, and m is independently an integer of 0 to 20, n is an integer of 1 to 7, and k, l and m are selected such that the compound of Chemical Formula 1 has an asymmetrical structure. The compound of Chemical Formula 1 may be included in the positive electrode, the negative electrode, or the electrolyte of the rechargeable lithium battery.

Rechargeable lithium battery

A battery charging method, including obtaining a voltage capacity ratio for a reference charge C-rate and voltage capacity ratios for N (N an integer of 1 or more) charge C-rates greater than the reference charge C-rate, each of the voltage capacity ratios for the reference charge C-rate and the N charge C-rates being defined as a ratio of a voltage variance to a capacity variance depending on a change in state of charge (SOC) of a battery when the battery is charged at a corresponding one of the C-rates, comparing the voltage capacity ratio of the reference charge C-rate with each of the voltage capacity ratios of the N charge C-rates, and then setting a charge C-rate of the N charge C-rates so that a difference in voltage capacity ratio is minimized for each of SOC sections, and charging the battery with the charge C-rates corresponding to the SOC sections.

Battery charging method and battery management system therefor

An electrode for a rechargeable lithium battery includes an electrode active material and a copolymer represented by where A is selected from &#x2014;O&#x2014;(CFR&#x2014;CFR)&#x2014;, &#x2014;(CFR&#x2014;CFR)&#x2014; and combinations thereof, each of Rthrough Ris independently selected from fluorine, C1-C4 alkyls and C1-C4 fluorinated alkyls, and each of x and y is an integer ranging from 1 to 100,000.

Electrode for rechargeable lithium battery and rechargeable lithium battery including the same

A system for predicting the thickness of a battery is disclosed. In one aspect, the battery thickness predicting system includes a learning data input unit for receiving data on a previously manufactured battery. The thickness predicting system further includes an object data input unit for receiving data on a battery whose thickness is to be predicted. The system further comprises a mechanical learning unit connected to the learning data input unit to obtain a predicting function based on learning factors input to the learning data input unit and to provide weight values to the learning factors, respectively. The system further includes a thickness predicting unit connected to the object data input unit and the mechanical learning unit and using the weight values provided by the mechanical learning unit in order to predict the thickness of the battery whose thickness is to be predicted.

System for predicting thickness of battery and method for predicting thickness of battery

Embodiments of the present invention provide an accelerated lifetime estimation device for predicting the lifetime of a secondary battery, and a method thereof. The accelerated lifetime estimation device can accurately estimate a normal lifetime of the secondary battery while reducing an evaluation time period of the secondary battery.

Device for estimating a lifetime of a secondary battery and method thereof

A system for predicting a lifetime of a battery cell, including a learning data input unit, the learning data input unit being configured to receive at least one learning measurement factor and at least one learning factor, a target data input unit, the target data input unit being configured to receive at least one target factor, a machine learning unit, the machine learning unit being coupled to the learning data input unit, the machine learning unit assigning weights to respective ones of the learning factors input to the learning data input unit, and a lifetime prediction unit, the lifetime prediction unit being coupled to the target data input unit and the machine learning unit, the lifetime prediction unit using the weights assigned by the machine learning unit to predict one or more characteristics indicative of the lifetime of the target battery cell.

System for predicting lifetime of battery

An electrode assembly comprises a first electrode including a first electrode current collector and a first electrode active material layer, a second electrode including a second electrode current collector and a second electrode active material layer, a separator disposed between the first electrode and the second electrode, and an electrode absorbing member in contact with the first electrode.

Electrode assembly and rechargeable battery using the same

A secondary battery includes a battery unit that has an accommodation space for an electrode assembly, a vent housing that defines a housing space connected with the accommodation space through a first vent hole, the vent housing including a second vent hole through which the housing space is connected with an outside of the secondary battery, a revolving member that is rotatably mounted between a closing position for closing the first and second vent holes and an opening position for opening the first and second vent holes, and first and second sealing caps that are formed at opposite sides of the revolving member with respect to a rotation axis of the revolving member. The first and second sealing caps respectively close the first and second vent holes, when the revolving member is mounted at the closing position.

Secondary battery

Growing community of inventors

Yongin-si, South Korea

Kyeong-Beom Cheong