Abstract: There is provided a battery including a positive electrode, and a negative electrode. At least one electrode of the positive electrode and the negative electrode includes a current collector, a mixture layer over one main surface of the current collector, the mixture layer including a gap through which a part of the current collector is exposed, a lead bonded to an exposed surface of the current collector exposed through the gap, and a protective layer configured to protect the current collector, at least a part of the protective layer being over the exposed surface of the current collector and interposed between a part of the lead and the exposed surface. The part of the lead includes at least a part of a peripheral edge of the lead.

Abstract: A stacked all-solid-state battery includes: a stacked body including stacked power generation elements each having a cathode current collector layer and so on; and an antecedent short circuit layer arranged outside the stacked body. In the battery, at least one of the cathode current collector layer and the anode current collector layer includes a fuse portion that fuses by overcurrent, the antecedent short circuit layer includes a first metal layer, a second metal layer and an aluminum layer provided between the first and second metal layers and including an oxide film on its surface; the elements have a parallel connection to each other, and the first and second metal layers are respectively and electrically connected with the cathode and anode current collector layers.

Abstract: A battery cell includes a pouch, an electrolyte material, positive and negative electrodes, and one or more heat conducting members. The pouch has an inner surface defining an internal volume, within which is contained the electrolyte material. The electrodes form current collectors that are positioned within the internal volume of the pouch. The electrode terminals are connected to a respective one of the positive and negative electrodes. Each heat conducting member is in thermal communication with a respective electrode terminal fully within the internal volume of the pouch, and extends between the electrodes and the inner surface of the pouch. The heat conducting members form a parallel heat transfer path within the battery cell. A battery pack includes a housing containing multiple such battery cells.

Abstract: Systems, methods, and computer program products are disclosed for dynamically charging an internal battery of a smart card from an interface device (such as a terminal) so that the battery life may be extended. A smart card device detects that it has interfaced with an interface device and that voltage is now being provided to the smart card device. The smart card device may divert some or most of the current being provided with the voltage to charge an internal battery of the smart card device, either concurrent to other communications between the smart card device and the interface device or before/after relevant communications are completed. As a result, the use of a smart card device contributes to the charge of the smart card device's internal battery, instead of draining it.

Abstract: A secondary battery-mounted circuit chip wherein secondary battery is directly fabricated on opposed surface of formed circuit into an integrated structure of the secondary battery and circuit, and a manufacturing method thereof. Secondary battery-mounted circuit chip is configured such that secondary battery is directly fabricated in region corresponding to circuit into integrated structure of secondary battery and circuit. The chip is secondary battery-mounted circuit chip wherein secondary battery is formed on surface opposing a circuit region fabricated on wafer.

Abstract: A secondary battery includes an electrode assembly including a positive electrode plate and a negative electrode plate; a can accommodating the electrode assembly; and a cap assembly having a cap plate sealing the opening of the can, a terminal plate on one side of the cap plate and being electrically connected to the negative electrode plate, and an insulation plate located between the cap plate and the terminal plate, the insulation plate including a bottom plate, and first and second long side walls and first and second short side walls extending from the bottom plate and respectively encompassing opposing long sides and opposing short sides of the terminal plate, wherein the first and second long side walls have recessed regions, and wherein the terminal plate is configured to contact the can at the recessed regions when the can is deformed by compression.

Abstract: A battery module includes a plurality of battery cells each configured to store an electric charge and a busbar interconnecting the plurality of battery cells. Each battery cell has a first end surface including a positive terminal, a second end surface, and a perimeter surface including a negative terminal. The busbar has a layered structure including a plurality of parallel-extending layers. The layers include a first conductive layer positioned on the first end surface and contacting each of the positive terminals of the plurality of battery cells, a second conductive layer positioned between the first and second end surfaces and contacting each of the negative terminals of the plurality of battery cells, and at least one isolating layer positioned between the first conductive layer and the second conductive layer. The at least one isolating layers holds the battery cells in position in at least a lateral direction.

Abstract: Electrical battery module comprising: —a casing (2) comprising a longitudinal body (3) suitable for longitudinally receiving a plurality of electrical batteries (4), one next to the other, and an end cover (5) coupled to one of the ends of said longitudinal body; —an internal, radial electrical connection plate (7) and an external, radial electrical connection plate (8), axially arranged on both sides of said end cover (5); —and at least one axial, electrical connection pad (17, 21) of said internal and external plates (7, 8), axially crossing said cover (5); the interior radial plate (7) comprising a plurality of electrical contact means (13) suitable for being respectively in contact with one end of said electrical batteries (4); and the external radial plate (8) comprising a plurality of electrical distribution means (19) intended for external electrical connection of this external radial plate (8).

Abstract: A battery pack is disclosed. The battery pack includes a cell with a spacer, and a cap mounted on the spacer. The spacer and cap are mated to form a cavity to accommodate the components (i.e. busbars, circuit board, an insulator) of the battery pack. The spacer and cap have a series of mating surfaces for the components, wherein the mating surfaces have different heights to be recessed relative to each other to create spaces for accommodating the components. The recesses, channels, steps and raised portions correspond in geometry to the components so that they can be assembled while removing the tolerance accumulation associated with multiple standoffs.

Abstract: Disclosed herein is a secondary battery pack including a battery cell having an electrode assembly mounted in a battery case together with an electrolyte, a protection circuit module (PCM) having a protection circuit for controlling overcharge, overdischarge, and overcurrent of the battery cell, an insulative mounting member mounted to a top cap of the battery cell, and an insulative cap coupled to the upper end of the battery cell, wherein the top cap is provided with at least one protrusion-type electrode terminal, and the top cap is provided at a partial region where the protrusion-type electrode terminal is not formed with a space (depression space) depressed downward by a predetermined depth.

Abstract: Transdermal therapeutic systems are described which have at least one electronic component, as well as methods for producing this type of transdermal therapeutic systems.

Abstract: A process for preparing a lithium-rich antiperovskite electrolyte film involves forming a composite target of precursor metal oxide(s) and metal halide(s), and exposing the target to a pulsed laser beam under conditions suitable for depositing a film of lithium-rich antiperovskite on a surface. In some embodiments the process is used to prepare a film of Li3OCl from a target largely composed of Li2O and LiCl. Exposure of the target to a pulsed laser beam deposits antiperovskite electrolyte Li3OCl on a substrate. In another embodiment, sputtering may be used to prepare films of lithium-rich antiperovskites using the composite target of precursor metal oxide(s) and metal halide(s).

Abstract: A rechargeable battery includes an electrode assembly having electrodes located on either side of a separator; a case housing the electrode assembly; a cap plate sealing the case; a lead tab that is connected to each of the electrodes; and a terminal that is connected to a respective lead tab and protrudes from the case through a terminal hole, wherein the terminal comprises a different material than the lead tab, and wherein an insulating portion is located between the terminal and the cap plate.

Abstract: A rechargeable battery whose ohmic resistance is modulated according to temperature is disclosed.

Abstract: A battery terminal is made of a clad material in which a first metal layer made of an Al-based alloy, a second metal layer made of a Cu-based alloy, and a third metal layer made of a Ni-based alloy are bonded to each other in a state where the first metal layer, the second metal layer, and the third metal layer are stacked in this order. The battery terminal includes a shaft portion and a flange portion that radially expands from the shaft portion, and has the third metal layer at least in an end of the shaft portion on a first side in a shaft direction in which the shaft portion extends.

Abstract: A scalable power source that includes a controller that is electrically connected to an engine component that generates electrical power and includes a modular connector that electrically connects the controller to plural auxiliary power sources or plural types of auxiliary power sources to provide a selected power output.

Abstract: A secondary battery, including a case having one or more partition walls providing a plurality of accommodating spaces; a plurality of electrode assemblies in the accommodating spaces with an electrolyte, the plurality of electrode assemblies including electrode tabs; and a cap assembly including a cap plate sealing a top portion of the case, the cap assembly having the electrode tabs drawn therefrom and first connection tabs electrically connecting the plurality of electrode assemblies through the electrode tabs, the partition walls being impregnated with the electrolyte.

Abstract: Provided are systems and methods for configuring battery packs in electric vehicles. A battery pack may include a plurality of battery modules, a support part, and at least one opening provided on the support part. The support part may be provided with a bottom for supporting the plurality of battery modules, sides, a top, and an accommodation space formed by the bottom, the sides, and the top for accommodating the plurality of battery modules. The opening provided on the bottom of the support part may enable the plurality of battery modules to be passed through the at least one opening and be detachably mounted to the bottom of the support part so as to be supported by the bottom.

Abstract: Provided is an electric storage apparatus capable of preventing a decrease in its performance for cooling electric storage devices. An electric storage apparatus includes an electric storage device, an end holder adjacent to the electric storage device, a frame sandwiching the electric storage device and the end holder, and a seal member arranged between the frame and the end holder.

Abstract: Disclosed is a battery pack including a bushing for connecting an end plate. The battery pack according to the present disclosure connects an upper housing and an end plate for a battery module assembly by the bushing.

Abstract: A battery pack is provided. The battery pack has a plurality of secondary batteries and an inspection circuit. When the plurality of secondary batteries are classified into a first secondary battery group configured of secondary batteries selected from the plurality of secondary batteries and a second secondary battery group configured of remaining secondary batteries not belonging to the first secondary battery group, the inspection circuit creates a first data string of the secondary batteries configuring the second secondary battery group, based on a predetermined arithmetic rule, from identification marks of the secondary batteries configuring the first secondary battery group, obtains a second data string by examining identification marks of the secondary batteries configuring the second secondary battery group, subsequently compares the first data string with the second data string, and stops a function of the battery pack when the first data string and the second data string do not match.

Abstract: An energy storage apparatus includes: an energy storage device; a spacer disposed on one side of the energy storage device in a first direction, the spacer including a pair of wall portions; and a measuring part for measuring a state of the energy storage device, the measuring part disposed on one side of the energy storage device in a second direction which intersects with the first direction. The wall portions include a first wall portion disposed on the one side of the energy storage device in the second direction and a second wall portion disposed on the other side of the energy storage device opposite to the one side of the energy storage device. The energy storage device is arranged at a position where a distance between the energy storage device and the first wall portion is set shorter than a distance between the energy storage device and the second wall portion.

Abstract: A power control system for adjusting an input power limit of a DC-DC voltage converter is provided. The system includes a microprocessor that determines an amount of output power being output by a battery pack, an amount of available power in the battery pack, and an amount of input power being input to the DC-DC voltage converter. The microprocessor determines an amount of power being provided to the DC-AC inverter based on the amount of output power being output by the battery pack and the amount of input power being input to the DC-DC voltage converter. The microprocessor decreases the input power limit of the DC-DC voltage converter if a sum of the amount of power being provided to the DC-AC inverter and the amount of input power being input to the DC-DC voltage converter is greater than the amount of available power in the battery pack.

Abstract: A battery pack is disclosed. In one aspect, the battery pack includes rechargeable batteries each having first and second terminals opposing each other and first and second fixing members each having catching portions respectively positioned at opposite sides of the rechargeable batteries and extending toward a center of the rechargeable batteries. Each of the catching portions has first and second ends opposing each other, and a gap is formed between the catching portions and the rechargeable batteries. The battery pack also includes a plurality of balancing wires and a protective circuit configured to protect the rechargeable batteries from overcharge or overdischarge. The catching portions of the first fixing member and the respective catching portions of the second fixing member are engaged and fixed with respect to each other, and wherein one or more of the balancing wires pass through the gap.

Abstract: Disclosed herein is a battery pack configured to have a structure in which a protection circuit module (PCM) is mounted at a sealed surplus part of a battery cell at which electrode terminals of the battery cell are located, wherein the PCM includes a protection circuit board (PCB), a safety element, and an electrically insulative module case for surrounding the PCB and the safety element, the module case includes an upper case and a lower case coupled to each other through an assembly type fastening structure for receiving the PCB and the safety element, the module case, the PCB, and the electrode terminals are provided with first openings and second openings having a sufficient size to allow a first joint fastening member and a second joint fastening member to extend therethrough, and the PCB is received between the upper case and the lower case such that the PCB is electrically connected to the electrode terminals of the battery cell in a state in which the PCB is coupled to the electrode terminals of the

Abstract: A high-voltage energy storage module for supplying a voltage, in particular to a motor vehicle, includes at least two storage cells and at least one electrically conductive connection between two poles of different storage cells. The individual connection consists of multiple adjacently arranged bonding wires, and each bonding wire is secured to the two poles by means of a wire bonding.

Abstract: This battery module is provided with: a cell having a connection terminal; and a bus bar that is connected to the connection terminal and has an upright standing part that extends in the direction in which the connection terminal protrudes. The bus bar is connected, via a conductive wire, to an object to be connected, which is provided at a position separate from the connection terminal in the extending direction of the upright standing part. The cell is configured so as to be charged and discharged through the bus bar and the conductive wire.

Abstract: A battery pack includes unit cells disposed side-by-side, a connection board connecting the unit cells in series and/or in parallel, the connection board including position fixing portions on a first surface, a protection circuit module electrically connected to the connection board, and a first connecting tap and a second connecting tap disposed on the connection board to electrically connect the unit cells and the connection board. At least one of the first connecting tap and the second connecting tap includes one end connected to the unit cells and an other end, the other end including a plurality of bridges at a lower side thereof. The bridges are inserted into the position fixing portions.

Abstract: A battery module includes a plurality of battery cells each having a vent portion located in a first surface thereof, the plurality of battery cells being aligned in a first direction; a plurality of barriers each covering at least a portion of the first surface so that the vent portion is exposed, the barriers being located between adjacent ones of the plurality of battery cells; an insulating member mounted on the first surface, the insulating member having a plurality of first openings each corresponding to a respective one of the vent portions; a cover provided above the insulating member to cover the vent portions and the insulating member; and a pressing member located between the insulating member and the cover, wherein the insulating member includes a first sealing portion protruding toward the cover, and a second sealing portion protruding toward the first surface.

Abstract: Disclosed herein is a battery module assembly including two or more battery modules, each of which includes two or more plate-shaped battery cells vertically stacked such that electrode leads of the battery cells are arranged in one direction, each of the battery modules having terminal parts connected to an outside, a base plate including module receiving parts, on tops of which the battery modules are loaded in a state in which electrode terminals of the battery modules are arranged in one direction, the base plate being provided at an outer edge thereof with upwardly bent side walls, an upper cover plate including downwardly bent side walls formed at opposite sides thereof on the basis of the electrode terminals of the battery modules, the upper cover plate being fixed on the base plate to form a top of the battery module assembly, a plate-shaped assembly cover loaded on tops of the battery modules and coupled to the battery modules in a fastening fashion, the assembly cover fixing a cable, and an electric

Abstract: Disclosed herein is a battery module assembly including two or more battery modules, each of which includes two or more plate-shaped battery cells vertically stacked such that electrode leads of the battery cells are arranged in one direction, a base plate including module receiving parts, on tops of which the battery modules are loaded in a state in which electrode terminals of the battery modules are arranged in one direction, the base plate being provided at an outer edge thereof with upwardly bent side walls, an upper cover plate including downwardly bent side walls formed at opposite sides thereof on the basis of the electrode terminals of the battery modules, the upper cover plate being fixed on the base plate to form a top of the battery module assembly, and a plate-shaped assembly cover loaded on tops of the battery modules and coupled to the battery modules in a fastening fashion, the assembly cover including a cable fixing part for fixing a cable.

Abstract: Disclosed is a case for a vehicle's battery pack. In an aspect of the present disclosure, it is possible to provide a stable and economic case for a battery pack including a plurality of secondary battery cells.

Abstract: A battery system and method for connecting a battery to the battery system are disclosed. In one aspect, the battery system includes at least one first battery, a second battery, a first switch configured to connect the second battery in parallel to the first battery and a second switch and a resistor connected in series and configured to connect the second battery in parallel to the first battery. The first switch and the second switch are connected in parallel. The battery system further includes a battery management system (BMS) configured to turn on the second switch so as to connect the second battery to the first battery. The BMS is further configured to turn off the second switch and turn on the first switch when the difference in voltage between the second battery and the first battery reaches a predetermined value.

Abstract: A transparent flexible printed circuit board (FPCB) of reduced thickness but good conductivity and transparency includes an insulating resin layer. The insulating resin layer has a first surface and a second surface. At least one through hole is defined in the insulating resin layer through the first surface and the second surface. A conductive wiring layer is formed on the first surface and a wiring layer is formed on the second surface. The conductive wiring layers are made of electrically conductive resin, and have wiring openings. A cover film covers each of the conductive wiring layers, and further infills the wiring openings.

Abstract: A protection circuit module which is welded to a connection tab and a PTC device without affecting a printed circuit board, and a battery pack including the same are provided. One embodiment of the present invention provides a battery pack having a bare cell and a protection circuit module electrically connected to the bare cell. The protection circuit module includes a printed circuit board, a connection tab positioned on a bottom surface of the printed circuit board, and a positive temperature coefficient (PTC) device electrically connected to the connection tab. The PTC device has a first lead coupled to a bottom surface of the connection tab, a PTC body electrically connected to the first lead, and a second lead electrically connected to the PTC body.

Abstract: A secondary battery including an electrode assembly, the electrode assembly including a first electrode, a second electrode, and a separator; a case accommodating the electrode assembly therein; a cell cover sealing the case; and a first terminal unit having one end that is electrically connected to the first electrode of the electrode assembly and having another end extracted to an outside of the case, wherein the first terminal unit includes a first collector in the case and electrically connected to the first electrode of the electrode assembly, the first collector having a fuse area; and an arc cutting block adjacent to the fuse area of the first collector, the arc cutting block being movable to a position previously occupied by the fuse area in the event that the fuse area is cut off, and cutting an arc generation path.

Abstract: Provided is a secondary battery, which can prevent a protective circuit board and an electrode terminal from colliding with each other by providing a gasket including a support unit protruding from a top surface of a cap plate to be higher than the electrode terminal. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to an opening of the case, an electrode terminal electrically connected to the electrode assembly and upwardly protruding through a terminal throughhole of the cap plate, and a gasket interposed between the cap plate and the electrode terminal and electrically insulating the cap plate and the electrode terminal from each other. The gasket includes a support unit protruding from the cap plate to be higher than the electrode terminal.

Abstract: According to some embodiments of the present invention, a secondary battery includes: an electrode assembly including a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate; a case accommodating the electrode assembly and including a top opening; a cap plate sealing the top opening of the case and including a short-circuit hole; a first electrode terminal electrically coupled to the first electrode plate and protruding to an upper portion of the cap plate; an inductive element electrically coupled to the first electrode terminal and having self-inductance; a first connection plate electrically coupled to the inductive element and separated from the cap plate; and an inversion plate in the short-circuit hole.

Abstract: A battery pack includes a battery cell having an electrode tab and a protective circuit module electrically connected to the electrode tab. The protective circuit module has a first surface in an assembling direction of the electrode tab and a second surface opposite the first surface. The electrode tab is separated from the first surface. Therefore, the battery pack has an improved connection structure between the battery cell and the protective circuit module, and short circuits can be prevented or substantially prevented.

Abstract: An energy storage module includes an energy storage cell group containing a plurality of energy storage cells stacked in a stacking direction, and a pair of end plates provided at both ends of the energy storage cell group in the stacking direction. A terminal frame is provided at the end plate in order to electrically connect an electrode terminal of the energy storage cell provided at an end in the stacking direction and an output line. The terminal frame is fixed to the end plate by fixing points.

Abstract: A battery pack includes a plurality of battery cells, a protective circuit module (PCM), a temperature sensor and a case. Each battery cell has a terrace portion sealed so that an electrode tab of an electrode assembly is extracted to an outside. The PCM is electrically connected to the plurality of battery cells. The temperature sensor is connected to the PCM to measure a temperature of the battery cells. The case accommodates the plurality of battery cells, the PCM and the temperature sensor. The case includes a mounting portion on which the PCM is mounted, and a temperature sensor support portion protruded to be spaced apart from the mounting portion at a predetermined height is formed in one area of the mounting portion.

Abstract: The invention relates to a method of controlling the operation of the electrical power supply to an electric motor vehicle comprising at least two energy storage modules connected in parallel, said modules being able to provide the motor with a delivered electrical power lying between a predetermined minimum power and a predetermined maximum power, noteworthy in that the method comprises the following steps: —detection (100, 110) of an operating anomaly of at least one defective module, —reduction (120, 130) of the maximum power that can be provided by the modules, —electrical disconnection (140) of each defective module, the disconnection step being implemented after the reduction of the maximum power.

Abstract: A rechargeable battery includes an electrode assembly including a first electrode and a second electrode, a case, a cap assembly including a cap plate, a first terminal outside the cap plate and electrically connected to the first electrode, and a second terminal outside the cap plate and electrically connected to the second electrode, a first connection terminal passing through the cap assembly and including one end connected to the first terminal and an other end positioned inside the case, a first current collecting member including one side connected to the first electrode and an other side rotatably coupled to the first connection terminal and electrically connecting the first connection terminal and the first electrode, and a rotation restriction member between the cap plate and first current collecting member, the rotation restriction member stopping rotation of the first current collecting member according to a predetermined angle of the rotation.

Abstract: A battery pack includes a plurality of unit batteries, each including a pair of first side surfaces and a pair of second side surfaces perpendicular to the pair of first side surfaces, the unit batteries being side-by-side in a first direction such that the pair of first side surfaces face each other. A protective circuit module including a substrate and protective devices mounted on the substrate is electrically connected to the unit batteries adjacent to top portions of the unit batteries. A first cap cover accommodates the protective circuit module and the top portions of the unit batteries. A second cap cover is spaced apart from the first cap cover with the unit batteries therebetween. The second cap cover accommodates bottom portions of the unit batteries. At least one of the first cap cover and the second cap cover includes a rib extending in a region between adjacent unit batteries.

Abstract: A lithium battery cell structure is provided. A first-electrode conduction portion and a second-electrode conduction portion that are exposed outward are respectively provided on two sides of a soft package lithium battery inside the metal housing. The first-electrode conduction portions are respectively electrically connected and fixed to a first-electrode conductive sheet, and the first-electrode conductive sheet is electrically connected and fixed to a housing conductive sheet that is connected to the metal housing. The second-electrode conduction portions are respectively electrically connected and fixed to a second-electrode conductive sheet, and an other end of the second-electrode conductive sheet is electrically connected and fixed to the second electrode end.

Abstract: A battery protection circuit module and battery pack including the same are disclosed. In one aspect, the battery pack includes a first battery cell including a pair of first electrode tabs, a battery protection circuit module, and a frame accommodating the first battery cell and the battery protection circuit module. The battery protection circuit module includes a printed circuit board (PCB) having a first recess formed in a first side thereof and a pair of first tabs that are separated from each other, wherein each of the first tabs at least partially overlaps the first recess. The battery protection circuit module also includes a first temperature protection device having one end thereof electrically connected to one of the first tabs and the other end thereof electrically connected to the other first tab and a pair of first connection units respectively electrically connected to the first electrode tabs.

Abstract: A cap assembly for a battery includes a roll combination member, a terminal combination member, an electrode terminal, a strength reinforcing block, a cap, and a pad assembly. The roll combination member includes at least one opening, so that terminal disposed portions of 2k rolls are capable of passing through the opening and k is an integer greater than 1, wherein one terminal disposed portion is formed by bending portions of central members of two adjacent rolls. The terminal combination member, the electrode terminal, the strength reinforcing block, the cap, and the pad assembly are sequentially combined on the roll combination member, wherein the electrode terminal includes an electrically conductive portion and a thermally conductive portion which surrounds the electrically conductive portion. The cap assembly is electrically connected to the bending portions at the same side of the 2k rolls.

Abstract: A battery module is provided including a secondary battery unit having a plurality of secondary batteries spaced from each other, the plurality of secondary batteries each including electrode terminals and a safety vent which are arranged on one side of the secondary battery unit; a compression plate wrapping at least a portion of the secondary battery unit and compressing the secondary battery unit together; and an insulation cover covering the electrode terminals and the safety vent, the insulation cover including a duct connected to the safety vent to guide gases exhausted from the safety vent to a first location, and a vent hole member coupled to the duct at the first location.

Abstract: A battery system (BS), containing at least one battery device (BV) and at least one operating device (BTV) for operation of the battery system (BS) and/or of the at least one battery device (BV), and at least one further device (V), wherein the at least one further device (V) is intended to create a physical distance between two component parts of the battery system (BS) and in particular between the at least one battery device (BV) and a further component (K) of the battery system (BS), or between at least two component parts of the at least one battery device (BV), wherein the at least one operating device (BTV) is arranged at least partially within the at least one further device (V).

Abstract: A secondary battery, which can improve safety during a longitudinal compression test by reinforcing strength of a cap plate, is provided. In one embodiment, the secondary battery includes an electrode assembly, a can accommodating the electrode assembly, and cap plate coupled to a top portion of the can and sealing the can, wherein a reinforcement unit is formed on at least one side of the cap plate.