摘要:
Disclosed herein is a battery module using battery cells each having an electrode assembly mounted in a battery case including a resin layer and a metal layer as unit cells, wherein each battery cell has a thin upper end, including a sealing part, which is formed at a region where electrode terminals are placed, and an impact-absorbing member is mounted at the upper end of each battery cell. The battery module according to the present invention prevents the weak upper parts of battery cells, such as electrode terminals and sealing parts, from the breakage of the battery module or the occurrence of a short circuit in the battery module due to the movement of the battery cells caused by dropping of the battery module or application of external impacts to the battery module. Furthermore, the battery module according to the present invention is constructed in a structure in which the battery module can be flexibly extended and contracted depending upon desired electrical capacity and output, wires used to electrically connect components constituting the battery module are compact, and the electrical connection between the components of the battery module is stably accomplished.
摘要:
Disclosed herein is a battery module using battery cells each having an electrode assembly mounted in a battery case including a resin layer and a metal layer as unit cells, wherein each battery cell has a thin upper end, including a sealing part, which is formed at a region where electrode terminals are placed, and an impact-absorbing member is mounted at the upper end of each battery cell. The battery module according to the present invention prevents the weak upper parts of battery cells, such as electrode terminals and sealing parts, from the breakage of the battery module or the occurrence of a short circuit in the battery module due to the movement of the battery cells caused by dropping of the battery module or application of external impacts to the battery module.
摘要:
Disclosed herein is a stacking or stacking/folding type electrode assembly of a cathode/separator/anode structure, wherein the electrode assembly is constructed in a structure in which tabs (electrode tabs), having no active material applied thereto, protrude from electrode plates constituting the electrode assembly, electrode leads are located at one-side ends of the stacked electrode tabs such that the electrode leads are electrically connected to the electrode tabs, and protruding lengths of the electrode tabs are gradually increased according to the distances between the electrode leads and the electrode tabs, whereby the lengths of the electrode tabs at joint portions between the electrode tabs and the electrode leads are the same. Also disclosed is an electrochemical cell including the electrode assembly.
摘要:
Provided is a lithium secondary battery which has excellent low-temperature power output characteristics by the inclusion of a given amount of a lithium metal oxide and/or a lithium metal sulfide in an anode mix for a lithium secondary battery containing a carbon-based anode active material and is thereby capable of being used as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) that must provide high-power output at low temperatures as well as at room temperature.
摘要:
Provided is a lithium secondary battery which has excellent low-temperature power output characteristics by the inclusion of a given amount of a lithium metal oxide and/or a lithium metal sulfide in an anode mix for a lithium secondary battery containing a carbon-based anode active material and is thereby capable of being used as a power source for electric vehicles (EVs) and hybrid electric vehicles (HEVs) that must provide high-power output at low temperatures as well as at room temperature.
摘要:
Disclosed herein is a lithium secondary battery having improved life characteristics by removal of metal ion impurities incorporated during an assembly process of the battery via a cation exchange process, thereby preventing electrodeposition of the metal ions on an anode, through the addition of a cation exchange material, containing cations selected from the group consisting of lithium, sodium, ammonium and any combination thereof, to an electrode and/or a surface of a separator.
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:
Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.
摘要:
Disclosed herein is a safety switch including a tube that is capable of shrinking when exposed to temperatures in excess of a predetermined temperature level (“heat shrinkage tube”), wherein the length of the heat shrinkage tube is changeable to control current conduction, one end of the heat shrinkage tube is fixed, and the other end of the heat shrinkage tube is connected to an electric wire connection part, such that current conduction or current interruption is accomplished by the change in length of the heat shrinkage tube when the heat shrinkage tube is varied due to heat. When a battery or a battery pack is exposed to an abnormal environment, with the result that the temperature of the battery or the battery pack exceeds a predetermined temperature level, the heat shrinkage tube of the safety switch shrinks to directly interrupt external charge current, thereby preventing the further charge of the battery or the battery pack. Furthermore, internal energy accumulated in the battery cell is forcibly consumed, thereby fundamentally preventing the progress of the abnormal operation of the battery or the battery pack. Consequently, the safety of the battery is secured.
摘要:
Provided is a non-aqueous electrolyte-based, high-power lithium secondary battery having a long service life and superior safety at both room temperature and high temperature, even after repeated high-current charging and discharging. The battery comprises a cathode active material composed of a mixture of lithium/manganese spinel oxide and lithium/nickel/cobalt/manganese composite oxide wherein the cathode active material exhibits the life characteristics that the capacity at 300 cycles is more than 70% relative to the initial capacity, in the provision of satisfying the condition (i) regarding the particle size and the condition (ii) regarding the mixing ratio.