Samsung SDI Patente

A battery module includes: a housing; a plurality of battery cells accommodated in the housing and each including a case including a vent hole and a cell terminal protruding from the case; a bus bar electrically connecting the cell terminal of a battery cell of the plurality of battery cells and the cell terminal of another battery cell of the plurality of battery cells; and a bus bar holder including a holder body that supports the bus bar and includes a holder through hole corresponding to the vent hole, and a first protective member including an insulating material and located between the holder body and the case to face the case.

The present disclosure relates to a secondary battery inspection apparatus, a secondary battery inspection method, and a secondary battery manufacturing method, and the problem solved by the present disclosure is to identify an internal state of a secondary battery in a non-destructive manner. A secondary battery inspection apparatus according to one embodiment includes a magnetic field generator configured to apply a magnetic field to the secondary battery to be tested, a high frequency generator configured to generate a high frequency of a predetermined frequency and apply the high frequency to the secondary battery to be tested, a sensor configured to detect electromagnetic waves emitted from the secondary battery to be tested to which the high frequency is applied while the magnetic field is applied and a processor configured to determine an internal state of the secondary battery to be tested using the emitted electromagnetic waves detected by the sensor.

A battery module includes a plurality of battery cells, busbars electrically connecting the plurality of battery cells, a holder positioned on the plurality of battery cells and accommodating the bus bars, and a cover portion positioned on the holder and covering the bus bars, wherein the cover portion includes a first layer, a second layer positioned on the first layer, and a third layer positioned on the second layer, and the second layer includes a material different from those of the first layer and the third layer.

A positive electrode active material, a method for preparing the positive electrode active material, a positive electrode including the positive electrode active material, and a rechargeable battery (e.g., a rechargeable lithium battery) including the positive electrode are disclosed. The positive electrode active material may have a disordered rocksalt structure. The positive electrode active material includes a compound represented by Chemical Formula 1, wherein a ratio of M<1> having an oxidation number of +2 is less than or equal to about 25 at%, based on a total of 100 at% of M<1>.

A secondary battery includes: an electrode assembly including a first electrode including a first electrode tab, and a second electrode including a second electrode tab; a case including a three-dimensional shaped body having an accommodating space therein to accommodate the electrode assembly, and a flange extending in a horizontal direction from an open end of the body around the accommodating space; a cover on the case and joined to the flange to seal the accommodating space; and a first side plate joined to the body.

The present disclosure relates to a face-to-face cooling plate and a battery pack including the same. The face-to-face cooling plate capable of absorbing displacement that occurs when a battery cell swells to prevent a sudden decrease in lifetime of a battery and prevent leakage of coolant that is caused by swelling compression. The face-to-face cooling plate includes a cooling chamber which is provided between battery cells and forms a space therein so that cooling fluid is circulated and a leakage prevention unit provided in the cooling chamber, and accommodates the cooling fluid when the battery cell swells.

A method for preparing a single-particle type positive electrode active material precursor includes (a) mixing a nickel-based hydroxide and an inactive lithium salt to prepare a mixture; and (b) performing a first heat treatment on the mixture to obtain a nickel-based oxide in a form of single particles. According to some example embodiments, a positive electrode active material precursor and a method for preparing the same, and a method for preparing a positive electrode active material including the same minimize or reduce the production process, thereby ensuring long cycle-life characteristics and improving high-temperature storage characteristics. A rechargeable lithium battery using the positive electrode active material can exhibit high initial charging and discharging capacity and efficiency, and can implement long cycle-life characteristics.

A busbar holder (200) includes: a bridge portion (240) between a plurality of through holes into which a busbar (30) is inserted; and a buffer portion (220, 230) extending inwardly from one side surface (280, 290) of a through hole from among the through holes, and having an upwardly bent shape, the one side surface (280, 290) facing the bridge portion (240).

An electrode manufacturing apparatus includes an electrode plate transfer device configured to transfer an electrode plate in a first direction while supporting the electrode plate, with the electrode plate including a first region in which an active material layer is formed and a second region, in which the active material layer is not formed. The electrode manufacturing apparatus also including a camera configured to acquire an image of the electrode plate supported by the electrode plate transfer device and an electrode tab placement device that is configured to place an electrode tab in the second region, with the electrode tab placement device being movable in a second direction intersecting the first direction. The electrode manufacturing apparatus further includes a processor configured (i) to determine a placement position at which the electrode tab is to be placed using the image and (ii) to adjust a position of the electrode tab placement device in the second direction so that the electrode tab is placed at the determined placement position.

A venting apparatus for a secondary battery includes a spring having a top end and a bottom end, a sub-terminal plate connected to the top end of the spring, the sub-terminal plate being under a terminal plate having a vent, a vent plate connected to the bottom end of the spring, the vent plate having high and low positions changeable in response to a pressure within the secondary battery, and a discharge preventer on an opening of a case of the secondary battery, the discharge preventer being between the vent plate and the opening of the case, and the discharge preventer being configured to prevent a discharge of a material other than a gas within the secondary battery.

Disclosed are a copper substrate for a negative electrode for a rechargeable lithium battery, a negative electrode including the copper substrate, and a rechargeable lithium battery including the negative electrode. The copper substrate has a microstrain according to Lab source Powder X-ray diffraction analysis of from about 0.04% to about 0.17%.

A cap assembly (30), including a cap plate (31) having a hole therein, a terminal plate (330) having a lower portion (332) in the hole, and an upper portion (331) above the cap plate and exposed, and a sub-plate (350) below the cap plate, the sub-plate being bonded to the lower portion of the terminal plate.

Examples of the disclosure include a spacer including a polymer matrix, and an endothermic flame retardant dispersed in the polymer matrix. The polymer matrix includes a fiberized polymer, and the endothermic flame retardant is included in a content in a range of ≥ 60 wt% to ≤ 98 wt% with respect to a total weight of the spacer.

A battery pack (1000) includes a plurality of battery cells (100) including a first battery cell (100a) and a second battery cell (100b), and a tab (200) electrically connecting the plurality of battery cells, and the tab includes a first joint portion (210) joined to the first battery cell and including a first material, and a second joint portion (220) joined to the second battery cell and including a second material.

Provided are a dry binder including a crosslinking reaction product in which a polyurethane-based polymer is crosslinked by an epoxy crosslinking agent, an electrode including the dry binder, and a rechargeable lithium battery including the dry binder.

A cap assembly (130) for a secondary battery (100), includes: a cap plate seated on and coupled to an open end of a case accommodating an electrode assembly, the cap plate having a through-hole therethrough; a terminal plate electrically connected to the electrode assembly, and inserted into the through-hole of the cap plate; a first insulating member between the cap plate and the terminal plate to provide electrical insulation between the cap plate and the terminal plate; and a second insulating member at an outside of the first insulating member to provide electrical insulation between the cap plate and the terminal plate.

A battery module includes a plurality of battery cells, with each of the battery cells including battery cell terminals and a battery cell vent. The battery module also includes a reinforcement frame including a plurality of reinforcement frame connection vents in fluid communication with the battery cell vents and a reinforcement frame discharge vent in fluid communication with the reinforcement frame connection vents. A busbar module electrically connects the battery cell terminals.

A secondary battery includes an electrode assembly (100) including a first electrode, a separator, and a second electrode stacked sequentially, a first case (110) configured to accommodate a portion of the electrode assembly (100), a second case (120) configured to accommodate another portion of the electrode assembly (100), and a central structure (130) between the first case (110) and the second case (120).

A system and method for controlling electrode plate drying, and more particularly a system and method for performing laser-based electrode plate drying control, are described. The method of controlling electrode plate drying may include the steps of (a) receiving electrode plate drying degree information, and (b) determining a beam energy intensity profile according to an electrode plate drying degree monitoring result.

Roller cleaning device (40) comprising a cleaning part (41) configured to be provided in an apparatus (20) for manufacturing a secondary battery that includes one or more rollers (30) configured to contact a substrate (24) coated with slurry (24a) for a secondary battery and a support structure (50) supporting the rollers (30), the cleaning part (41) being operatively associated with one of the rollers (30) and configured to remove contaminants (z) from a surface of the roller (30) by contacting the roller; a driving part configured to drive the cleaning part; and a controller (53) configured to control the driving part. Apparatus (20) for manufacturing a secondary battery comprising the roller cleaning device (40) and associated cleaning method.

An apparatus for manufacturing a secondary battery includes a cap transporter including a cap seater, which is configured to receive a cap at a cap supplying position and on which the cap is to be seated, and is rotatable about a cap turntable axis to transport the cap to a cap welding position, a can transporter configured to move a can connected to a tab toward the cap located at the cap welding position, a can holder configured to move between a can separation position spaced apart from the can and a can pressing position at which the can holder comes into contact with the can and the can is pressed in a direction in which the cap transporter is arranged, a tab pusher, and a laser generator configured to emit a laser to the tab to weld the cap and the tab.

An energy storage system includes a plurality of battery modules, a fire-extinguishing tank accommodating a fire-extinguishing agent, and a pipe part connecting the plurality of battery modules to the fire-extinguishing tank, wherein each of the plurality of battery modules includes a plurality of battery cells and a fire-extinguishing tube which extends into the interior of each of the plurality of battery modules along an arrangement of the plurality of battery cells, wherein the pipe part includes: a distribution pipe connected to the fire-extinguishing tube in the battery modules; and an extension pipe including connecting portions connected to the distribution pipe, and a curved portion disposed between the connecting portions.

A welding apparatus for manufacturing a secondary battery includes an electrode tab welding tool configured to weld a plurality of electrode tabs formed on an electrode plate forming an electrode assembly to form an electrode tab welding portion and a strip conductor welding tool configured to weld a strip conductor to the welded electrode tab to form a strip conductor welding portion. The strip conductor to be electrically connected to an external terminal, and the strip conductor welding tool and the electrode tab welding tool being configured to form the strip conductor welding portion and the electrode tab welding portion in areas not overlapping each other.

A protection circuit module includes a substrate electrically connected to a battery cell, components in implementation regions on the substrate, a first insulating layer in regions other than the implementation regions on the substrate, a second insulating layer on the first insulating layer and separated from the components, and a coating layer on the first insulating layer and surrounding the components.

An apparatus for controlling a main line switch mounted on an energy storage system is provided. The energy storage system includes a plurality of battery racks and a disconnect switch unit. The apparatus includes: a battery connection unit respectively on each of the battery racks, the battery connection unit being configured to measure a current of a corresponding one of the battery racks by using a built-in current measurement unit and to generate an overcurrent detection signal when the current of the corresponding one of the battery racks exceeds an overcurrent protection level; and a switch controller configured to open the disconnect switch unit to block a main line current flowing to the energy storage system in response to the overcurrent detection signal from a reference number or more of battery connection units.

Provided are a battery cell and a battery module. The battery cell comprises a case comprising a space for accommodating an electrode assembly, a cap plate placed in an opening of the case to seal the case and comprising an electrolyte inlet formed therein, a first terminal and a second terminal installed to protrude outwardly through the cap plate, and a cell cap placed on a top side of the case to cover the cap plate.

A pressure drop responsive gas tank includes: a tank main body inside a container, filled with a non-combustible gas, and having a discharge passage configured to discharge the non-combustible gas; and an opening device mounted on the discharge passage and configured to open the discharge passage when an internal pressure of the container is lower than an atmospheric pressure so that the non-combustible gas is discharged from the tank main body.

A secondary battery including an electrode assembly, a case in which the electrode assembly is accommodated, a cap assembly covering an opening of the case, and a fire-extinguishing member accommodated inside the case, the fire-extinguishing member in contact with the cap assembly.

Disclosed are positive electrodes and rechargeable lithium batteries. The positive electrode includes a current collector, a first active material layer on the current collector, and a second active material layer on the first active material layer. The first active material layer includes a first particle including a layered positive electrode active material, a second particle including an olivine-based active material, a first conductive material; and a first binder. The second active material layer includes the second particle, a second conductive material, and a second binder. An amount of the first particle in the first active material layer is equal to or greater than about 70% and equal to or less than about 90%.

Disclosed are positive electrodes (10) and rechargeable lithium batteries (100). The positive electrode includes a current collector (COL1), a first active material layer (ALT1) on the current collector, and a second active material layer (ALT2) on the first active material layer. The first active material layer includes a first positive electrode active material (CAM1) and a first lithium-based additive (LAD1). The second active material layer includes a second positive electrode active material (CAM2) and a second lithium-based additive (LAD2). An amount of the second lithium-based additive in the second active material layer is greater than the amount of the first lithium-based additive in the first active material layer.

A tape for battery attachment includes: an adhesive portion on one surface of the tape, the adhesive portion including: a weak adhesive portion; a strong adhesive portion having a stronger adhesive strength than that of the weak adhesive portion; and a perforation line perforated along an outer periphery of the strong adhesive portion.

A negative electrode active material, a negative electrode for a rechargeable lithium battery including the same, and a method for preparing the same are provided. A negative electrode active material includes a carbon-based material, and a surface modifier on a surface of the carbon-based material, where the surface modifier includes a polar functional group, and the polar functional group contains at least one of a carboxyl group, an amine group, a thiol group, and/or a combination thereof.

A protection circuit module includes: a protection circuit board electrically connected to an electrode tab protruding from one surface of a bare cell, and including a molding member covering one surface of the protection circuit board; a printed circuit board (PCB) on another surface of the protection circuit board opposite to the one surface; and a first spacer coupled with one end of the protection circuit board with respect to a longitudinal direction of the protection circuit board. The protection circuit board includes a first coupling portion coupled with the first spacer, and the first spacer includes a second coupling portion corresponding to the first coupling portion.

An energy storage system includes a housing including an internal space accommodating one or more battery modules, and at least one open side, a first door and a second door arranged adjacent to each other at the at least one open side of the housing, a connection unit having a first end connected to the first door and a second end connected to the second door, and a sealing unit fastened to the connection unit and arranged between the first door and the second door.

Provided is an energy storage system including a plurality of battery modules, a cooler configured to supply a cooling fluid to the plurality of battery modules, and a fire-extinguishing tank accommodating a fire-extinguishing agent capable of being supplied to the plurality of battery modules, wherein the plurality of battery modules each include a plurality of cell units which each include a plurality of battery cells arranged in a first direction and which are arranged in a second direction different from the first direction, a cooling plate having a flow path arranged to correspond to an arrangement of the plurality of battery cells, and a fire-extinguishing tube connected to the flow path of the cooling plate and arranged between the plurality of cell units.

A battery tape is disclosed. The battery tape includes a first member having a position relative to a first surface of a battery and a second member extending from a side of the first member, surrounding a side surface of the battery, and bonded to a second surface of the battery opposite to the first surface. The first member may be configured to shrink and contact the first surface of the battery based on exposing the first member to first heat, and the second member may be configured to shrink and contact the side surface of the battery based on exposing the second member to second heat.

An electrode assembly inspection device includes a communication unit configured to collect process data, and a processor configured to modify at least one related factor based on the process data and to model a prediction model that predicts a quality of an electrode assembly based on the modified at least one related factor.

An energy storage device (100) including one or more battery modules including a plurality of battery cells (260); a case (200) accommodating the battery module; a fire extinguishing pipe (300) disposed in the case, having one side open to accommodate a fire extinguishing agent (310) therein, and configured to melt at a certain temperature or higher to spray the fire extinguishing agent; and a connection portion (400) coupled to the case, having one end connected to the opened one side of the fire extinguishing pipe, and having the other end connected to a supply flow path (10) supplying the fire extinguishing agent.

An energy storage system includes: a rack including horizontal frames arranged at intervals in a vertical direction and having a length in a horizontal direction, vertical frames arranged at intervals in the horizontal direction, having a length in the vertical direction, and coupled to the horizontal frames, and guide rails coupled to inner sides of the horizontal frames and extending in an inward direction of the rack; a battery module mounted on the guide rails; and a fire extinguishing sheet coupled to the horizontal frames. The fire extinguishing sheet is configured to release a fire extinguishing agent to the battery module at a reference temperature.

A battery attachment tape includes: an adhesive portion including an adhesive surface attached to a surface of a battery cell; and a gripping portion extending from one side of the adhesive portion. The adhesive portion includes: a first adhesive portion overlapping with the gripping portion in a first direction; and a second adhesive portion on opposite sides of the first adhesive portion. Adhesive strengths of the first adhesive portion and the second adhesive portion are different from each other.