Abstract:
A flexible secondary battery includes an electrode stack structure including a first electrode layer, a second electrode layer opposite to the first electrode layer and a separator formed between the first electrode layer and the second electrode layer, and a fixing unit disposed in the electrode stack structure at an area excluding opposing end portions of the electrode stack structure, where the fixing unit fixes portions of the first electrode layer, the second electrode layer and the separator, which correspond thereto, to each other. The fixing unit may be disposed at a center portion or an area adjacent to the center portion of the electrode stack structure.
Abstract:
Disclosed is a battery mounted in an electronic device and having a notch structure patterned on an uncoated part, thereby reinforcing the bond between the partitioning films of the battery and providing a structure robust to external stress and enhanced for stabilized battery performance.
Abstract:
A complex electrode assembly includes a first sheet-type wiring which extends in a lengthwise direction of the first sheet-type wiring and comprises a sheet region of which a width that is perpendicular to the lengthwise direction is greater than a thickness that is perpendicular to the lengthwise direction and a width direction of the first sheet-type wiring, and electrode assemblies which are arranged separate from each other in the lengthwise direction of the first sheet-type wiring and are electrically connected to the first sheet-type wiring. The first sheet-type wiring may be disposed to face an outer surface of each of the electrode assemblies.
Abstract:
A flexible battery and an electronic device comprising same are provided. The flexible battery includes a battery assembly including a plurality of positive electrode plates and a plurality of negative electrode plates alternately stacked with each other and a separator arranged in between the positive electrode plates and the negative electrode plates, and a main positive electrode tab, a main negative electrode tab, an auxiliary positive electrode tab, and an auxiliary negative electrode tab which are attached to each of the plurality of positive electrode plates and protrude in a first direction of the battery assembly, wherein the separator may include a first portion arranged in between the positive electrode plates and the negative electrode plates and a second portion which extends from the first portion in the first direction and is arranged in between the auxiliary positive electrode tab and the auxiliary negative electrode tab.
Abstract:
A battery includes: a negative electrode including a negative electrode substrate layer and a negative electrode active material-coated negative electrode mixture layer on the negative electrode substrate layer; a positive electrode facing the negative electrode, the positive electrode including: a positive electrode substrate layer; a positive electrode active material-coated positive electrode mixture layer provided on the positive electrode substrate layer; and a barrier layer configured to suppress transfer of ions from the positive electrode active material-coated positive electrode mixture layer; and a separator provided between the negative electrode and the positive electrode, wherein the positive electrode active material-coated positive electrode mixture layer includes a first area at a center area of the positive electrode active material-coated positive electrode mixture layer and a second area at an edge of the positive electrode active material-coated positive electrode mixture layer, and wherein the barrier layer covers at least a portion of the second area and is further configured to limit direct transfer of the ions from the first area to the negative electrode.
Abstract:
A battery and an electronic device are disclosed. The battery is component to the electronic device, and includes: a first cathode plate including a first surface oriented in a first direction, and a second surface oriented in a second direction opposite to the first direction, a first separation membrane disposed on the second surface of the first cathode plate, a first anode plate disposed on a surface of the separation membrane oriented in the second direction, a through hole formed adjacent to respective center portions of the first cathode plate, the first separation membrane, and the first anode plate, wherein the through hole is substantially perpendicular to one surface of the first cathode plate, a cathode tab disposed within the through hole and electrically connected to the first cathode plate, and an anode tab spaced apart from the cathode plate within the through hole and electrically connected to the first anode plate, wherein the cathode tab and the anode tab are at least partially exposed to an external environment through the through hole.