Patent application number | Description | Published |
20100291432 | SECONDARY BATTERY AND METHOD OF MAKING THE SECONDARY BATTERY - A secondary battery and a manufacturing method thereof are disclosed. In one embodiment, the secondary battery includes 1) an electrode assembly having an outer surface, 2) a sealing tape attached to and surrounding at least part of the outer surface of the electrode assembly and 3) a can accommodating the electrode assembly and sealing tape. The sealing tape includes i) an adhesive layer contacting the outer surface of the electrode assembly and ii) a base layer formed on and at least partially covering the adhesive layer. The base layer contacts an inner surface of the can. At least part of the adhesive layer is not covered by the base layer. | 11-18-2010 |
20100310906 | SECONDARY BATTERY - A secondary battery, in which working pressure and rupture pressure of a safety vent are effectively controlled with respect to a slope of the safety vent and shapes of rupturable grooves. The secondary battery includes an electrode assembly, a can accommodating the electrode assembly and a cap assembly coupled to the can, the cap assembly including a lower portion arranged at an upper side of the electrode assembly and having a through-hole arranged at a center thereof, a safety vent electrically connected to the electrode assembly through the through-hole and an insulator arranged between the safety vent and the lower portion of the cap assembly, wherein a first distance between a portion of the safety vent arranged at a region near the through-hole and the lower portion of the cap assembly is smaller than a second distance between a portion of the safety vent positioned furthest from the through-hole and the lower portion of the cap assembly. | 12-09-2010 |
20110008672 | SECONDARY BATTERY AND METHOD OF MAKING THE SECONDARY BATTERY - A secondary battery and a manufacturing method thereof are disclosed. In one embodiment, the secondary battery includes 1) an electrode assembly comprising an outer surface, 2) an electrolyte, 3) a sealing tape attached to and surrounding at least part of the outer surface of the electrode assembly, wherein the sealing tape comprises i) an adhesive layer contacting the outer surface of the electrode assembly and ii) a base layer formed on the adhesive layer, and wherein the base layer is formed of a material which has directionality and 4) a can accommodating the electrode assembly and sealing tape, wherein the base layer is configured to at least partially lose directionality upon contacting the electrolyte so that at least a portion of the base layer contacts an inner surface of the can. | 01-13-2011 |
20110064995 | SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SECONDARY BATTERY - A secondary battery and a method of manufacturing the same are disclosed. In one embodiment, the secondary battery includes an electrode assembly including an external surface, an electrolyte, a sealing tape including an adhesive layer attached to at least portion of an outer surface of the electrode assembly and contacting the external surface of the electrode assembly and a base sheet disposed on an adhesive layer and formed of a material having directionality, and a can receiving the electrode assembly, the electrolyte, and the sealing tape, wherein the base sheet loses directionality and is shrunk and deformed in shape by contact with the electrolyte, and at least portion of the base sheet contacts an inner surface of the can to prevent the electrode assembly from being freely moved within the can. | 03-17-2011 |
Patent application number | Description | Published |
20090233157 | CYLINDER TYPE SECONDARY BATTERY - Disclosed is a cylindrical secondary battery that can improve pressing force of a gasket pressing a cap up and a safety vent. The cylindrical secondary battery prevents leakage of electrolyte by improving pressing force of the gasket by including a cap up whose terminal portion is formed thicker than the peripheral portion. By using the cap up of the above structure, a curled portion is formed at the edge of the cap up or safety vent so as to surround the end of the safety vent or cap up. Thus, internal resistance can be reduced when the vibration or external impact is applied to the battery, and assembling error can be prevented. | 09-17-2009 |
20090233160 | CYLINDRICAL SECONDARY BATTERY - A cylindrical secondary battery including: an electrode assembly including first and second electrode tabs; a can to house the electrode assembly; a cap assembly to seal an opening of the can; and an integrated assembly including a gasket, an insulation plate, and a central pin. An outer edge of the gasket is bent by the can, around an outer edge of the cap assembly. The insulation plate extends from the gasket, to cover a surface of the electrode assembly. The central pin extends from the center of the insulation plate, into the electrode assembly. | 09-17-2009 |
20110171507 | SECONDARY BATTERY - A secondary battery includes an electrode assembly, a can, a cap assembly, and a gasket. The electrode assembly includes a wound stack of two mutually different electrodes and a separator interposed between the two electrodes. The can houses the electrode assembly. The cap assembly is assembled at an upper portion of the can. The gasket is interposed and pressed between the cap assembly and the upper portion of the can, to maintain insulation and a seal between the cap assembly and the can. An adhesive layer of an applied low-viscosity adhesive liquid is provided at an inner side of the gasket to increase sealing force between the cap assembly and the can. | 07-14-2011 |
20110171508 | SECONDARY BATTERY - A secondary battery is disclosed. The secondary battery includes an electrode assembly formed by stacking and winding two different electrodes and a separator disposed between the electrodes, a can accommodating the electrode assembly, a cap assembly coupled to an upper portion of the can accommodating the electrode assembly, a gasket compressed between the cap assembly and the upper portion of the can to insulate and seal a space between the cap assembly and the can, and an auxiliary sealing member disposed inside the gasket to increase sealing force between the cap assembly and the can. The secondary battery maintains sealing force of the gasket closely contacting the outer surface of the cap assembly to secure sufficient sealing force and inhibit the dispersion of sealing pressures. | 07-14-2011 |
20110287302 | SECONDARY BATTERY - A secondary battery is disclosed. In one embodiment, the battery includes i) an electrode assembly, ii) an electrolyte, iii) a tape attached to at least part of an outer surface of the electrode assembly and iv) a case accommodating the electrode assembly, electrolyte and tape. The tape includes a base layer, and wherein at least a portion of the base layer is configured to exhibit an adhesive property when contacting the electrolyte so as to contact an inner surface of the case. | 11-24-2011 |
20120023739 | METHOD OF MANUFACTURING SECONDARY BATTERY - A secondary battery and a method of manufacturing the same are disclosed. In one embodiment, the secondary battery includes an electrode assembly including an external surface, an electrolyte, a sealing tape including an adhesive layer attached to at least portion of an outer surface of the electrode assembly and contacting the external surface of the electrode assembly and a base sheet disposed on an adhesive layer and formed of a material having directionality, and a can receiving the electrode assembly, the electrolyte, and the sealing tape, wherein the base sheet loses directionality and is shrunk and deformed in shape by contact with the electrolyte, and at least portion of the base sheet contacts an inner surface of the can to prevent the electrode assembly from being freely moved within the can. | 02-02-2012 |
20120034513 | SECONDARY BATTERY - A secondary battery is disclosed. In one embodiment, the battery includes i) an electrode assembly and ii) first and second electrode tabs spaced apart from each other and extending from the electrode assembly, wherein the first and second electrode tabs have first and second outer surfaces, respectively. The battery may further include i) an electrolyte, ii) a movement prevention tape attached to at least a portion of at least one of the first and second outer surfaces, wherein at least part of the movement prevention tape is configured to become adhesive upon contacting the electrolyte and iii) a can accommodating the electrode assembly, electrode tabs and movement prevention tape. | 02-09-2012 |
20120070707 | Cylindrical secondary battery - A secondary battery includes an electrode assembly formed by winding two different electrodes and a separator interposed therebetween, a can housing the electrode assembly, a cap assembly at a upper opening of the can; and a gasket interposed between the cap assembly and the can. The gasket has a relaxed condition prior to compression between the cap assembly and an upper portion of the can and a compressed condition after compression between the cap assembly and the upper portion of the can. The gasket includes a sidewall portion bent inwardly from outside of the can when the gasket is in the compressed condition, a bottom portion at a bottom of the sidewall portion and extending inwardly from a periphery of the can, a protruding portion on which the cap assembly is seated, and a concave portion formed between the protruding portion and an inner surface of the sidewall portion. | 03-22-2012 |
20120219849 | Lithium secondary battery - A cylinder type lithium secondary battery may include an electrode assembly, a cylindrical can configured to retain the electrode assembly, a cap assembly coupled to a top opening of the cylindrical can, an electrolyte disposed in the cylindrical can, and a gasket between the cap assembly and the cylindrical can, the gasket including an adhesive layer having a reaction product of the electrolyte and a material of the gasket. | 08-30-2012 |
20130202932 | POUCH TYPE BATTERY - A pouch type battery includes an electrode assembly having a first electrode, a second electrode and a separator between the first electrode and the second electrode, the first electrode, second electrode and separator being wound together, an electrolyte, a pouch accommodating the electrode assembly and the electrolyte, and a fixing member fixing a winding end of the electrode assembly. The fixing member includes a base layer and an adhesive layer located at either side of the base layer, the fixing member making contact with external surfaces of the electrode assembly, and the base layer being a material that melts and acquires adhesiveness upon contact with the electrolyte. A portion of the base layer in contact with the electrolyte is in a melted condition and is separated from the adhesive layer. | 08-08-2013 |
20140045009 | SECONDARY BATTERY - A secondary battery includes an electrode assembly, a can accommodating the electrode assembly, and a cap assembly sealing a top portion of the can and having a cap-up. The cap-up includes a base plate, a terminal in a protruding relationship with respect to an upper portion of the base plate, the terminal being at a center of the cap-up, a connection part connecting the base plate and the terminal, and a trench-shaped safety vent in the base plate. | 02-13-2014 |
20140065471 | SECONDARY BATTERY - A secondary battery that includes a can, an electrode assembly accommodated in the can together with an electrolytic solution, a cap assembly sealing the can, and an insulation member. The insulation member is interposed between the electrode assembly and the cap assembly. The insulation member includes a heat shrinkable material. | 03-06-2014 |