Lg Chem, Ltd

Palo Alto Research Center Inc.

Lg Energy Solution, Ltd.

Korea Power Cell Inc.

Geun-Chang Chung

Won-Tae Joe

Sun-Young Cha

Peter Kiesel

Saroj Kumar Sahu

Ajay Raghavan

Bhaskar Saha

Hoe Jin Hah

Chang-Jun Bae

Lars Wilko Sommer

Mohamed Alamgir

Alexander Lochbaum

Tobias Staudt

Gyu-Ok Hwang

Bokkyu Choi

Hong-Kyu Park

Ji Eun Lee

Sung Kyun Chang

Sinyoung Park

Song-Taek Oh

Sun Kyu Kim

Jong Chan Kim

Soo Min Park

Hyun Kuk Noh

Sin Kyu Kim

Yo-Han Ko

Dong Seok Shin

Jong-Pil Park

Keun Wan An

Sunkyu Kim

Sanguck Lee

Tae-Hyun Jeon

Hyun-Gook Yoon

Young Hwa Jung

Su-Jung Cho

Sun-Yoo Hwang

A battery cell has an electrode assembly, including a positive electrode and a negative electrode stacked in the state in which a separator is interposed between the positive electrode and the negative electrode, is mounted in a pouch-shaped cell case, wherein electrode tabs protruding outwards from a plurality of electrode plates are coupled to a first lead end of an electrode lead, a second lead end of the electrode lead, which is an opposite end to the first lead end, is located on the outer surface of the cell case in the state of being parallel to the direction in which the electrode plates are stacked, and a lead body provided between the first lead end and the second lead end is located to face the outermost surface of the electrode assembly in the state of being maintained parallel to the direction in which the electrode plates are stacked.

Battery cell including electrode lead located so as to face outer surface of electrode assembly

A battery includes a folded bicell battery stack with an embedded fiber optic cable and sensor. A cell casing encloses the bicell stack with at least one fiber optic cable is embedded within the battery. The fiber optic cable includes an internal portion disposed within the cell casing and having at least one optical sensor disposed thereon. An external portion of the fiber optic cable protrudes from the casing. A sealing gasket is disposed at least partially around the fiber optic cable and between the cell sealing edges at a point of entry of the fiber optic cable into the battery.

Embedded fiber optic cables for battery management

Disclosed is a battery system for a secondary battery including a blended cathode material, and an apparatus and method for managing a secondary battery having a blended cathode material. The blended cathode material includes at least a first cathode material and a second cathode material. The first and second cathode materials have different operating voltage ranges. When the secondary battery comes to an idle state or a no-load state, the battery system detects a voltage relaxation occurring by the transfer of operating ions between the first and second cathode materials.

Battery system for secondary battery comprising blended cathode material, and apparatus and method for managing the same

Disclosed herein is a cathode active material including a lithium manganese oxide, in which the lithium manganese oxide has a spinel structure with a predetermined constitutional composition represented by Formula 1 described in the detailed description, wherein a conductive material is applied to the surface of lithium manganese oxide particles, so as to exhibit charge-discharge properties in the range of 2.5 to 3.5V as well as in the 4V region.

Cathode active material comprising lithium manganese oxide capable of providing excellent charge-discharge characteristics at 3V region as well as 4V region

Disclosed is an apparatus and method for estimating a SOC of a secondary battery containing a blended cathode material. The SOC estimating apparatus estimates a SOC of a secondary battery including a cathode having a blended cathode material containing a first cathode material and a second cathode material with different operating voltage ranges, an anode having an anode material, and a separator for separating the cathode from the anode, and the apparatus includes a sensor configured to measure a discharge inception voltage and a final discharge voltage when the secondary battery is discharged for a predetermined time, and a control unit configured to estimate SOC of the secondary battery corresponding to the measured discharge inception voltage and the measured final discharge voltage by using a predetermined relationship between the discharge inception voltage and the final discharge voltage and the SOC of the secondary battery.

Apparatus and method for estimating SOC of secondary battery including blended cathode material

An apparatus for estimating a voltage of a secondary battery which includes a cathode including a first cathode material and a second cathode material with different activating voltage ranges, an anode including an anode material and a separator for separating the cathode from the anode. The apparatus includes a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to a State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Apparatus and method for estimating voltage of secondary battery including blended cathode material

Disclosed is an apparatus and method for estimating a parameter of a secondary battery. The apparatus includes a sensor configured to measure an open circuit voltage (OCV) of the secondary battery at a first depth of discharge (DOD'), the open circuit voltage (OCV) corresponding to a difference between a predetermined original cathode voltage (V) at the first depth of discharge (DOD&#x2032;) and an anode voltage (V), and a control unit configured to calculate an anode voltage (V) from the original cathode voltage (V) and the open circuit voltage (OCV), determining that the original anode voltage (V) is identical to the anode voltage (V), determining a second depth of discharge (DOD&#x2033;) corresponding to the original anode voltage (V), and determining capacity degradation (&#x394;capa) of the secondary battery according to a difference between the first depth of discharge (DOD&#x2032;) and the second depth of discharge (DOD&#x2033;).

Apparatus and method for estimating parameter of secondary battery

Disclosed is an apparatus for estimating a voltage of a secondary battery which includes a cathode comprising a first cathode material and a second cathode material with different operating voltage ranges, an anode comprising an anode material and a separator for separating the cathode from the anode. The apparatus comprises a control unit configured to estimate a voltage of a secondary battery based on a circuit model including a first cathode material circuit, a second cathode material circuit and an anode material circuit, each circuit modeled to change its voltage according to State Of Charge (SOC) of the electrode material corresponding the circuit and a current flowing through the circuit.

Apparatus and method for estimating voltage of secondary battery including blended material in electrode

Disclosed herein is a cathode active material for a secondary battery, which includes a combination of one or more selected from compounds represented by Formula 1, one or more selected from compounds represented by Formula 2, and one or more selected from compounds represented by Formula 3,(1-s-t)[Li(LiMnNiCo)O]*s[LiCO]*t[LiOH]&#x2003;&#x2003;(1)Li(LiMnO&#x2003;&#x2003;(2)(1-u)LiFePO*uC&#x2003;&#x2003;(3)In these formulae 0&#x3c;a&#x3c;0.3; 0&#x3c;x&#x3c;0.8; 0&#x3e;y&#x3e;0.6; 0&#x3c;s&#x3c;0.05; 0&#x3c;t&#x3c;0.05; 0&#x3c;b&#x3c;0.3; 0.01&#x3c;u&#x3c;0.1, wherein a, b, x and y denote mole ratios; and s, t and u denote weight ratios. The disclosed cathode active material has long lifespan and storage characteristics at room temperature and/or high temperature and excellent safety, and is effectively used to fabricate a non-aqueous electrolyte type high power lithium secondary battery having excellent rate properties and power characteristics.

Cathode active material and lithium secondary battery comprising the same

Growing community of inventors

Daejeon, South Korea

Geun-Chang Chung