Lg Chem, Ltd

Lg Energy Solution, Ltd.

Hee Gyu Kim

Jung Hwan Kim

Geon Tae Park

Sooryoung Kim

Yong-ho Cho

Jae Sik Chung

Hyungchan Kim

Hyungchan 1-710 Sungwon Apt Kim

Jae Sik 103-504 Lg Apt Chung

Yong-Ho 104-401 Hanyang Apt Cho

A secondary battery pack includes a battery cell having an electrode assembly in a battery case with an electrolyte. An electrically insulative mounting member is mounted to a top of the battery cell. A protection circuit module (PCM) including a protection circuit board (PCB) is loaded on the electrically insulative mounting member. The PCB has a protection circuit, and a connection member (A) and a connection member (B) coupled to a bottom of the PCB. The connection member (A) and the connection member (B) are coupled to the electrode terminals of the battery cell. The PCB has a through hole, through which the connection member (B) is exposed, and an insulative cap coupled to an upper end of the battery cell to surround the electrically insulative mounting member where the connection members and the protection circuit board are loaded on the insulative cap.

Secondary battery of novel structure

Disclosed herein is a battery cell including an electrode assembly of a cathode/separator/anode structure, the electrode assembly being impregnated with an electrolyte, the electrode assembly being chargeable and dischargeable, a battery case in which the electrode assembly is mounted, the battery case being made of aluminum or an aluminum alloy, and an alumina coating layer applied to at least a portion of an outer surface of the battery case by anodizing.

Battery cell of novel embedded type structure

Disclosed herein is a method of manufacturing a battery cell having an electrode assembly of a cathode/separator/anode structure disposed in a battery case made of aluminum or an aluminum alloy together with an electrolyte in a sealed state, the method including (a) anodizing an entire surface of the battery case in a state in which an uncoated margin section having a predetermined length is provided downward from an outer circumference of an upper end of the battery case, (b) mounting the electrode assembly in the battery case and connecting a cap plate to an open upper end of the battery case by laser welding, (c) injecting an electrolyte through an electrolyte injection port of the cap plate and activating the battery cell, and (d) replenishing the electrolyte and sealing the electrolyte injection port.

Method for manufacturing battery cell of novel structure

A secondary battery pack including a battery cell having first and second electrode terminals at a top thereof, an electrically insulative mounting member having an opening, through which the second terminal is exposed, the mounting member being mounted to a top of the cell, a protection circuit module (PCM) including a protection circuit board (PCB), having a protection circuit, loaded on the mounting member, a connection member (A) connected to the first terminal, and a connection member (B) connected to the second terminal, the PCB being provided with a through hole, through which the connection member (B) is exposed, and an insulative cap coupled to an upper end of the cell to surround the mounting member in which the connection members and the PCB are loaded on the mounting member, wherein the sum of a height of the PCM and a height of the cap is 3.0 mm or less.

Secondary battery pack of embedded type of novel structure

Disclosed herein is a battery cell including an electrode assembly of a cathode/separator/anode structure, the electrode assembly being impregnated with electrolyte, the electrode assembly being chargeable and dischargeable, a battery case in which the electrode assembly is mounted, the battery case being made of aluminum or an aluminum alloy, and a protective coating layer applied to at least a portion of an outer surface of the battery case, the protective coating layer containing an electrically insulative polymer material.

Disclosed herein is a prismatic battery pack including an electrode assembly of a cathode/separator/anode structure impregnated with an electrolyte, a prismatic container, in which the electrode assembly is mounted, the prismatic container having at least one depressed groove formed at a bottom thereof in a longitudinal direction of the prismatic battery pack, a cap plate coupled to an open upper end of the prismatic container, in which the electrode assembly is mounted, a protection circuit module (PCM) including a protection circuit to control operation of the prismatic battery pack, the PCM being loaded on the cap plate, and an insulative cap mounted to the prismatic container while surrounding the PCM.

Prismatic battery pack with novel structure

Disclosed herein is a method of manufacturing a battery cell having an electrode assembly of a cathode/separator/anode structure disposed in a battery case made of aluminum or an aluminum alloy together with an electrolyte in a sealed state, the method including (a) anodizing an entire surface of the battery case in a state in which a connection opening section, to which charge pins used to activate the battery cell are connected, is formed at a bottom of the battery case, (b) mounting the electrode assembly in the battery case and connecting a cap plate to an open upper end of the battery case by laser welding, (c) injecting an electrolyte through an electrolyte injection port of the cap plate and activating the battery cell, and (d) replenishing the electrolyte and sealing the electrolyte injection port.

Method for battery cell of novel structure

An integral cap assembly comprising a top cap mounted as a base plate to an opening of a battery can and a cap subassembly including a protective circuit module and the like integrally mounted on the top cap, a method for manufacturing a secondary battery comprising the same, and a secondary battery manufactured thereby are disclosed. The cap assembly is provided as an integral member comprising the top cap acting as the base plate, and the cap subassembly having the protective circuit module provided thereon, thereby simplifying a manufacturing process of the battery while minimizing frequency of defective products. Additionally, the integral cap assembly is manufactured through insert injection molding, thereby providing notable advantages over the conventional technology.

Growing community of inventors

Cheongwon-gun, South Korea

Hee Gyu Kim