摘要:
Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the secondary battery has at least one valve (one-way exhaust valve), having a small thickness, mounted at a sealed portion, formed at the outer circumference of an electrode assembly receiving part of the battery case, for allowing internal high-pressure gas to be exhausted out of a battery cell and preventing external gas from being introduced into the battery cell. The secondary battery according to the present invention has the effect of effectively exhausting internal high-pressure gas generated during the abnormal operation of the battery, such as overcharge, out of the battery case, while maintaining the sealability of the battery case, thereby simultaneously improving the efficiency and safety of the battery.
摘要:
Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the secondary battery has at least one-way exhaust member, mounted at a sealed portion, formed at the outer circumference of an electrode assembly receiving part of the battery case, for allowing internal high-pressure gas to be exhausted out of a battery cell and preventing external gas from being introduced into the battery cell. The secondary battery according to the present invention has the effect of effectively exhausting internal high-pressure gas generated during the abnormal operation of the battery, such as overcharge, out of the battery case, while maintaining the sealability of the battery case, thereby simultaneously improving the efficiency and safety of the battery.
摘要:
Disclosed herein is a secondary battery including an electrode assembly of a cathode/separator/anode structure mounted in a pouch-shaped battery case in a sealed state, wherein a residue portion, which is not sealed (non-sealing residue portion), is defined between a sealing portion of the battery case and the electrode assembly for collecting generated gas, and the non-sealing residue portion is formed by mounting the electrode assembly between upper and lower laminate sheets, at least one of which has a receiving part of a size approximately corresponding to the electrode assembly, sealing three sides of the upper and lower laminate sheets, including two sides where electrode terminals are disposed, among four sides of the upper and lower laminate sheets, injecting an electrolyte in the battery case through the non-sealing portion, and sealing the non-sealing portion such that the resultant sealing portion is spaced a predetermined width from the receiving part.
摘要:
Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the secondary battery has at least one-way exhaust member, mounted at a sealed portion, formed at the outer circumference of an electrode assembly receiving part of the battery case, for allowing internal high-pressure gas to be exhausted out of a battery cell and preventing external gas from being introduced into the battery cell. The secondary battery according to the present invention has the effect of effectively exhausting internal high-pressure gas generated during the abnormal operation of the battery, such as overcharge, out of the battery case, while maintaining the sealability of the battery case, thereby simultaneously improving the efficiency and safety of the battery.
摘要:
Disclosed herein is a plate-shaped secondary battery constructed in a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case, and the battery case is sealed by thermal welding, wherein the secondary battery has at least one valve (one-way exhaust valve), having a small thickness, mounted at a sealed portion, formed at the outer circumference of an electrode assembly receiving part of the battery case, for allowing internal high-pressure gas to be exhausted out of a battery cell and preventing external gas from being introduced into the battery cell. The secondary battery according to the present invention has the effect of effectively exhausting internal high-pressure gas generated during the abnormal operation of the battery, such as overcharge, out of the battery case, while maintaining the sealability of the battery case, thereby simultaneously improving the efficiency and safety of the battery.
摘要:
Disclosed herein is a secondary battery constructed in a structure in which an electrode assembly having a cathode/separator/anode arrangement is mounted in a battery case made of a laminate sheet including a resin layer and a metal layer, electrode tabs of the electrode assembly are coupled to corresponding electrode leads, and the electrode assembly is sealed in the battery case while electrode leads are exposed to the outside of the battery case, wherein a protective film is attached to coupling regions between the electrode tabs and the electrode leads for sealing the coupling regions between the electrode tabs and the electrode leads. The secondary battery according to the present invention is constructed in a structure in which the coupling regions are sealed by the protective film, unlike a conventional secondary battery constructed in a structure in which the coupling regions between the electrode tabs and the electrode leads are exposed in the battery case. As a result, the electrode leads are protected from external impacts, such as falling of the battery. Consequently, no internal short circuit occurs, and therefore, the safety of the battery is increased.
摘要:
Disclosed herein are an electrode assembly including a plurality of unit cells folded by a continuous separation film wherein the unit cells are arranged on the separation film such that electrode taps of the unit cells face each other, the separation film has openings corresponding to the electrode taps of the unit cells, and the electrode assembly is manufactured by folding the unit cells in the longitudinal (lengthwise) direction of the separation film while the unit cells are disposed such that the electrode taps of the unit cells are inserted into the corresponding openings, and an electrochemical cell, such as a secondary battery, including the same. The electrode assembly according to the present invention is a hybrid type electrode assembly solving the problems of the jelly-roll type electrode assembly and the stacking type electrode assembly. Consequently, when external impacts are applied to the electrode assembly, for example, the electrode assembly falls, it is possible to minimize the occurrence of internal short circuits and thus to improve the safety of the electrode assembly. Furthermore, it is possible to perform the process for impregnating (wetting) the electrolyte into the electrodes in a short time during the assembly of the electrochemical cell.
摘要:
Disclosed herein are an electrode assembly including a plurality of unit cells folded by a continuous separation film wherein the unit cells are arranged on the separation film such that electrode taps of the unit cells face each other, the separation film has openings corresponding to the electrode taps of the unit cells, and the electrode assembly is manufactured by folding the unit cells in the longitudinal (lengthwise) direction of the separation film while the unit cells are disposed such that the electrode taps of the unit cells are inserted into the corresponding openings, and an electrochemical cell, such as a secondary battery, including the same. The electrode assembly according to the present invention is a hybrid type electrode assembly solving the problems of the jelly-roll type electrode assembly and the stacking type electrode assembly. Consequently, when external impacts are applied to the electrode assembly, for example, the electrode assembly falls, it is possible to minimize the occurrence of internal short circuits and thus to improve the safety of the electrode assembly. Furthermore, it is possible to perform the process for impregnating (wetting) the electrolyte into the electrodes in a short time during the assembly of the electrochemical cell.
摘要:
Disclosed herein is a secondary battery including an electrode assembly of a cathode/separator/anode structure mounted in a pouch-shaped battery case in a sealed state, wherein a residue portion, which is not sealed (non-sealing residue portion), is defined between a sealing portion of the battery case and the electrode assembly for collecting generated gas, and the non-sealing residue portion is formed by mounting the electrode assembly between upper and lower laminate sheets, at least one of which has a receiving part of a size approximately corresponding to the electrode assembly, sealing three sides of the upper and lower laminate sheets, including two sides where electrode terminals are disposed, among four sides of the upper and lower laminate sheets, injecting an electrolyte in the battery case through the non-sealing portion, and sealing the non-sealing portion such that the resultant sealing portion is spaced a predetermined width from the receiving part.
摘要:
A method of programming a nonvolatile memory device comprises applying positive pulses and negative pulses simultaneously to a memory cell array to program at least one memory cell included in the memory cell array.