Lg Energy Solution, Ltd.

Lg Chem, Ltd

Samsung Electro-mechanics Co., Ltd.

Lg Display Co., Ltd.

Postech Academy-industry Foundation

Kyung-Min Lee

Seung-Jun Lee

Goan-Su Jung

Jong-Soo Lee

Kown Son

Hee-Chan Kim

Dong-Hyun Kim

Jun-Kyu Park

Hyun-Woo Park

Jeong-Ah Lee

Jae-Ho Um

Doo-hwan Lee

Doo-Hwan Lee

Seung-Don Choi

Sung-Soo Kim

Yul-Kyo Chung

Jin-Young Park

Hwa-sun Park

Bum-Young Jung

Han-Young Lee

Joung-Woo Lee

Seung-Su Cho

Young-Joon Shin

Sang-Woo Hong

Jeong-Ho Ha

Hyo-Bin Park

Bong-Koo Kang

Chang-Hyun Sung

Ho-Young Yoon

Chang-Moon Jeong

Jung-Soo Byun

Mike Kim

Jae-Pil Lee

Seung-Joon Jeon

The battery rack includes: a plurality of battery modules; a rack case configured to store the plurality of battery modules; a control unit configured to control charging and discharging of the plurality of battery modules; a data storage unit including a cable configured to transmit data from the control unit and a data recording unit configured to store the data; and a storage unit including an accommodating case having an inside space for accommodating the data recording unit, a plurality of ventilation holes formed by opening a portion of the accommodating case so that the inside space and the outside are communicated with each other, and a cover portion that has a plate shape, is spaced apart from the plurality of ventilation holes by a predetermined interval, and is configured to cover the plurality of ventilation holes.

Battery rack, power storage device, and data storage device

A battery rack with increased durability to prevent a rack case from being deformed or broken by external impacts during delivery. To achieve the above-described object, the battery rack includes a plurality of battery modules arranged in a first direction, at least one rack case including a plurality of rack frames configured to mount the plurality of battery modules, and at least one fixing frame including a body in the shape of a plate extending along the plurality of battery modules and a fixing portion formed on one surface of the body and configured to be attached and detached to/from each of the plurality of battery modules.

Battery rack having fixing frame and energy storage system

A battery rack includes a rack case, and a first battery module assembly and a second battery module assembly respectively including a plurality of battery modules stacked along an upper and lower direction of the rack case, and, inside the rack case, the plurality of battery modules of the second battery module assembly are arranged such that upper and lower portions thereof are inverted based on the arrangement of the plurality of battery modules of the first battery module assembly.

Battery rack and energy storage system including the same

A battery rack includes a plurality of battery modules respectively having at least one battery cell, a rack case configured to accommodate the plurality of battery modules, and a separation bracket mounted at the rear of the rack case and configured to secure a predetermined separated space at the rear of the rack case.

Battery rack including bracket creating space between walls and rack case and power storage apparatus comprising same

A battery module improves safety by blocking current when the temperature rises, a battery pack includes the battery module, and a vehicle includes the battery pack. The battery module includes two or more battery cells, an electrode assembly having both ends respectively connected to one ends of electrode leads of opposite polarities in a pouch case together with an electrolyte and other ends of the electrode leads are exposed to an outside of the pouch case, wherein the electrode leads and a bus bar connecting a first battery cell and a second battery cell, wherein the bus bar comprises a metal layer and a material layer that is normally conductive but may act as a resistor when a temperature rises, and wherein the material layer comprises a gas generating material that is decomposed at a certain temperature or higher to generate a gas and increase resistance.

Battery module with improved safety, battery pack including the battery module and vehicle including the battery pack

There is provided a secondary battery including an electrode assembly having a stack structure of an anode/a separation film/a cathode, a pouch type exterior member configured of a lower surface in which a receiving part is formed and an upper surface covering the receiving part, a single electrode assembly or a plurality of electrode assemblies being received in the receiving part, and an electrode terminal formed outwardly of the pouch type exterior member, the secondary battery including: a sealing part formed by bonding edges of the pouch type exterior member, wherein a portion of the sealing part formed on a surface of the pouch type exterior member on which the electrode terminal is not formed outwardly of the exterior member is folded downwardly at an angle of 90 degrees.

Secondary battery having pouch type exterior member with folded sealing part

The present disclosure describes an ultrasonic welding apparatus, which improves the welding strength of an electrode tab and an electrode lead included in a secondary battery, and a secondary battery with an enhanced electrode structure strength by using the ultrasonic welding apparatus. The secondary battery includes an electrode assembly in which a cathode plate provided with a cathode tab, an anode plate provided with an anode tab, and a separator are stacked in turn; a pouch for receiving the electrode assembly; a cathode lead electrically coupled to the cathode tab by welding; and an anode lead electrically coupled to the anode tab by welding, wherein the density of welding points, formed at a welding surface between the anode lead and the anode tab, is higher than that of welding points, formed at a welding surface between the cathode lead and the cathode tab.

Ultrasonic welding apparatus and secondary battery with enhanced electrode structure

Secondary battery having pouch type exterior member with downwardly folded sealing part

A DC-DC converter control circuit with enhanced driving efficiency while securing circuit stability during light-load driving of the DC-DC converter through variation of an on/off duty ratio of a burst mode according to load. The control circuit includes a detection unit for detecting an amount of current and a voltage at an output stage of a DC-DC converter, and generating and outputting a differential voltage according to a level of the detected voltage, a comparison unit for comparing the differential voltage with a reference voltage having a triangle or sawtooth waveform, thereby generating a duty signal, and a converter controller for generating an on/off control signal corresponding to a duty ratio of the duty signal, and supplying the on/off control signal to the DC-DC converter, to control on/off of the DC-DC converter.

DC-DC converter control circuit, image display device using the same and driving method thereof

An electrode lead for electrically connecting an electrode assembly provided inside a case of a secondary battery with the outside of the case, according to the present invention, comprises: an inner lead which is inserted between sealing parts of the case and to which an electrode tab of the electrode assembly is attached, and which has a gas flow path so as to allow gas to flow between the inside and the outside of the case; and an external lead which is insertably disposed in the gas flow path, is electrically connected with the inner lead when inserted into the gas flow path, seals one end of the gas flow path, and is separated from the gas flow path so as to cut off electrical connection with the inner lead when the pressure of the gas flowing into the gas flow path is greater than or equal to the predetermined pressure.

Electrode lead and secondary battery having the same

An electronic component embedded printed circuit board is disclosed. In accordance with an embodiment of the present invention, the electronic component embedded printed circuit board is a printed circuit board in which an electronic component is embedded in a core board, and the electronic component includes a silicon layer and a passivation layer, which is formed on one surface of the silicon layer. Here, a center line of the silicon layer and a center line of the core board are placed on a same line.

Electronics component embedded PCB

A manufacturing method of a printed circuit board having an electro component is disclosed. The method in accordance with an embodiment of the present invention includes: seating an electro component, in which an electrode is formed on an upper side, on an upper side of a bonding sheet; seating an insulator, in which a cavity corresponding to the electro component has been formed, on the upper side of the bonding sheet; laminating a first insulating resin on an upper side of the insulator such that an upper side of the electro component is covered; polishing the first insulating resin such that the electrode is exposed; and forming a first circuit pattern, which is electrically connected to the exposed electrode, on the polished first insulating resin.

Manufacturing method of printed circuit board having electro component

Growing community of inventors

Daejeon, South Korea

Kyung-Min Lee