LG Energy Solution Patente

A system and method for managing battery may notify a vehicle user of a dangerous situation in advance by detecting whether simultaneous fusion of a positive relay and a negative relay has occurred while communication with the battery is interrupted.

A cell stack assembly according to one embodiment of the present invention comprises: a cell stack comprising a plurality of battery cells; a first side beam provided on one side of the cell stack and having a first surface pressure absorbing portion configured therein to absorb surface pressure; and a second side beam provided on another side of the cell stack and having a second surface pressure absorbing portion configured thereinto absorb surface pressure. The first surface pressure absorbing portion and the second surface pressure absorbing portion are hollow structures, which absorb and disperse surface pressure due to volume expansion of the battery cells.

The present disclosure provides a repeating frame having a high voltage connection structure and accommodating battery cells. The repeating frame includes: a plurality of the battery cells connected to each other in series, in which a positive electrode lead protrudes on one side and a negative electrode lead protrudes on the other side; and a high voltage connector having a pair of busbars arranged between the plurality of battery cells. Each of the pair of busbars is electrically connected to an electrode lead located between the plurality of battery cells.

A battery electrode coating device includes a coating die, a spacer shim mounted on the coating die, and a bolt-type fixing member that fixes the spacer shim to the coating die such that a fastening portion passes through the spacer shim and fastens to the coating die. A portion of the fastening portion positioned within a through hole of the spacer shim includes at least two steps having different diameters.

The present disclosure relates to a cell assembly including: a cell block including a plurality of battery cells with electrode leads protruding therefrom; a busbar frame including a busbar electrically connected to the electrode leads and coupled with the cell block; and at least one heat dissipation unit provided between the cell block and the busbar frame and including heat dissipation pins.

According to exemplary embodiments, a battery pack is provided. The battery pack may include: a plurality of battery cells arranged in a first direction inside a pack housing; a plurality of separators interposed between the plurality of battery cells and having a height greater than the height of each of the plurality of battery cells; and an upper cover disposed on top of the plurality of battery cells and the plurality of separators and including a base and a plurality of accommodating parts protruding from the base to accommodate each of the plurality of separators. The upper cover may include: a thermoplastic case; and a fire extinguishing agent within the thermoplastic case.

Provided is a battery cell activation process simulation system capable of efficiently train new trainees on actual activation process equipment without affecting the operation of actual activation process equipment. The system includes: a server storing basic information and training information about a training equipment as a training target battery cell activation equipment, and work history of a trainee participating in the training; a terminal providing the training information to the trainee participating in the training; an input interface provided at the terminal for inputting information of the trainee participating in the training; and a training contents selection logic constructing a training curriculum to be provided to the terminal based on an inputted information of the trainee.

According to exemplary embodiments, a battery pack housing is provided. The battery pack housing may include: a base plate; a side wall perpendicular to the base plate; a venting device installed in a venting hole of the side wall; and a protector overlapping the venting device in a first direction and installed on an inner surface of the side wall. The protector may include first to third plates extending in a second direction perpendicular to an upper surface of the base plate. The first plate includes a plurality of first holes each having a first diameter, the second plate includes a plurality of second holes each having a second diameter, and the third plate includes a plurality of third holes each having a third diameter.

A battery cell assembly according to an exemplary embodiment of the present disclosure includes: a cell frame configured to accommodate a battery cell therein; an internal connection terminal electrically connected to the battery cell and exposed to the outside through a side surface of the cell frame; a terminal cover configured to be detachably mounted to the side surface of the cell frame and to cover the internal connection terminal; and an external connection terminal mounted on the terminal cover and having a rear end portion connected to the internal connection terminal at the rear of the terminal cover and a front end portion exposed forward of the terminal cover. The terminal cover may be formed in one of at least two types with different mounting positions of the external connection terminal and may be selectively mounted to the cell frame.

Disclosed are a silicon-carbon composite in which, when subjected to etching with an argon (Ar) ion beam at an energy of 1,000 eV for 5,000 seconds followed by XPS analysis, a ratio of a proportion of Si measured from an Si^2p spectrum to a proportion of N measured from an N^1s spectrum is 35 to 200, a negative electrode active material including the silicon-carbon composite, a negative electrode composition, a negative electrode, a lithium secondary battery, a battery module, and a battery pack.

The present disclosure relates to a secondary battery sealing device for sealing an exterior material of a secondary battery which can be repeatedly charged and discharged. The sealing device, according to an embodiment of the present invention, comprises a pressing unit for pressing an edge of an exterior material of a secondary battery, and a transfer unit for transferring energy supplied from the outside to the pressing unit, wherein the pressing unit includes: a main body for accommodating the transfer unit and made of a non-metallic material; and a metal member coupled to an outer surface of the main body and heated by receiving energy from the transfer unit.

A battery pack includes a plurality of battery cell assemblies, each including a battery cell and a cell cover covering three surfaces of the battery cell except for a lower surface; an upper case to which the plurality of battery cell assemblies are separately detachably coupled; and a lower case coupled to the upper case and covering a lower surface of the plurality of battery cell assemblies and formed of a transparent material. (Representative figure: FIG. 3)

Disclosed is a battery rack, which includes a plurality of battery modules, each having at least one battery cell, a rack case configured to accommodate the plurality of battery modules, and a fire proof unit mounted to be spaced apart from each other by a predetermined distance along a vertical direction of the rack case and configured to support the battery modules and prevent flame and heat from propagating to adjacent battery modules when a fire occurs in at least one of the plurality of battery modules.

A battery module of the present technology includes a battery cell assembly formed by stacking two or more columns of longitudinal unit cells, each of which is composed of two or more battery cells arranged in a line in a longitudinal direction and connected, in a thickness direction of the battery cell, a hollow center guard disposed at a connection position of end portions of the battery cells, which face each other in the longitudinal direction, in the longitudinal unit cell, and a module case in which the battery cell assembly and the hollow center guard are accommodated, wherein a first venting hole communicating with a hollow of the hollow center guard is provided in a sidewall of the hollow center guard, and a second venting hole communicating with the hollow of the hollow center guard is provided in the module case configured to cover an upper portion of the hollow center guard. The present technology also relates to a battery pack including the battery module.

Provided is an electrode assembly for a nuclear battery, which is a jelly roll type electrode assembly wound around a central axis in one direction. The electrode assembly (10) comprises: - a first electrode (111), a second electrode (112), an energy conversion layer (130) provided between the first electrode (111) and the second electrode (112), and - a radioactive source (120) provided in a space between the first electrode (111) and the energy conversion layer (130), and/or - a space between the second electrode (112) and the energy conversion layer (130), wherein - the electrode assembly (10) is a jelly roll type electrode assembly in which the first electrode (111), the second electrode (112), the energy conversion layer (130) and the radioactive source (120) are laminated and wound in one direction around a central axis (C) of the electrode assembly.

A battery SOC estimating apparatus according to an embodiment of the present disclosure includes a charging and discharging unit configured to receive a control signal including C-rate information and charge and discharge a battery at a C-rate included in the control signal; a measuring unit configured to measure a voltage of the battery in a charging and discharging process of the battery; and a control unit configured to transmit the control signal to the charging and discharging unit, change the C-rate included in the control signal whenever the voltage value measured by the measuring unit reaches a preset threshold value, and estimate SOC of the battery based on the result of comparing the changed C-rate with a preset cutoff value.

The present invention discloses an electrode assembly, a battery cell, and a battery cell cutting device, and a battery pack and vehicle including the battery cell. The present invention provides an electrode assembly (110) including an electrode cell body portion (111) in which a separator (13) is stacked between a first electrode sheet (11) and a second electrode sheet (12) in the form of a sheet, the first electrode sheet (11), the second electrode sheet (12), and the separator (13) are wound in a jelly-roll type, and an uncoated portion (15), on which an active material layer is not coated, is formed in an end portion of each of the first electrode sheet (11) and the second electrode sheet (12) in a width direction, a plurality of cut surface portions (115) formed by cutting out a portion of the uncoated portion (15) along a circumferential direction around a core portion (112) of the electrode cell body portion (111), and a plurality of forming portions (117) that are disposed between the cut surface portions (115) and formed by pressing and laying down uncut portions (117a) of the uncoated portion (15).

Provided is a pouch for a secondary battery and a lithium secondary battery including the same. The pouch for the secondary batter includes a barrier layer, a base material layer disposed on one surface of the barrier layer, and a sealant layer disposed on the other surface of the barrier layer. The sealant layer includes a first sealant layer in contact with the other surface of the barrier layer, and a second sealant layer disposed on the first sealant layer opposite to the barrier layer. The sealant layer has a melt flow rate (MFR) of about 14.0 g/10 min or less, which is measured at a temperature of about 230°C under a load condition of about 2.16 kg.

Disclosed is a battery container that is easy to optimize size and weight. The battery container includes a container housing having a plurality of unit housings to form an empty space therein; a plurality of battery modules accommodated in the inner space of the container housing and stacked in an upper and lower direction to form a module stack, so that a plurality of module stacks are arranged in a horizontal direction; and a support member configured to accommodate the plurality of battery modules while supporting at least two unit housings therebetween.

A battery pack according to an embodiment of the present disclosure includes battery modules including a plurality of battery cells; and a pack frame for housing the battery modules. Within the pack frame, the battery modules are arranged in a multiple row and single layer structure, and at least two of the battery modules are arranged in a row along the first direction to form battery module groups. A partition wall member is located between any one battery module group and another battery module group, and the partition wall member extends along the first direction.

An electrode for secondary battery according to an embodiment of the present disclosure includes an electrode current collector; and an electrode layer located on the electrode current collector, wherein the electrode layer comprises an electrode composition in which an active material, a conductive material, and a binder are dry-mixed, wherein the binder comprises a first binder and a second binder, with the first binder and the second binder being different from each other, and wherein the second binder is attached to the surface of the first binder.

A cover (300) is configured to cover an open end of a battery housing of the battery cell (10) for accommodating an electrode assembly (100) in the battery housing (200). The cover has an injection hole (H1) to be sealed by a plug (400). The cover comprises a flat portion (310) surrounding the injection hole, an edge portion (320) formed at an edge of the cover so as to be coupled to the battery housing, and a plurality of electrode coupling portions (330) configured to be coupled to the electrode assembly of the battery cell. The electrode coupling portions are arranged between the flat portion and the edge portion and are spaced apart from each other. The electrode coupling portions are respectively formed as a depression that is recessed from the flat portion for the flat portion to be spaced apart from the electrode assembly when the electrode coupling portions are coupled to the electrode assembly.

Battery cell (10) comprises an electrode assembly (100) wound around a winding axis so that a winding center hole (H) is formed at a center of the electrode assembly, a battery housing (200) configured to accommodate the electrode assembly through an open end formed at one side, a cover (300) configured to cover the open end and having an injection hole (H1) formed at a center of the cover, and a plug configured to be inserted into the injection hole and seal the injection hole. A size (R1) of the injection hole is smaller than a size (R2) of the winding center hole.

A cell block according to an embodiment of the present disclosure includes: a cell assembly including a plurality of battery cells and having a corrosion protection layer on a surface; a lower housing having a space therein to accommodate the cell assembly; a cooling liquid accommodated in the lower housing; an upper housing on top of the lower housing and including at least one venting hole; and a sealing bracket between the lower housing and the upper housing and sealing a space between an outer surface of the cell assembly and an inner surface of the lower housing.

An electrode groove forming apparatus according to the present disclosure is configured to form an electrode groove on an electrode, and includes a roller body configured to rotate, a stage configured to support the electrode, and a protrusion protruding from an extension start point on the roller body. The protrusion includes a portion having a predetermined angle relative to an imaginary line extending from a center of the roller body toward the extension start point.

According to exemplary embodiments, a method for generating a recipe for MSCC (Multi-Step Constant Current) charging is provided. The method includes: charging a modeling cell to collect charging data of the modeling cell; deriving a current-capacitance model based on the charging data; and generating a recipe for MSCC (Multi-Step Constant Current) charging based on the current-capacitance model.

A hopper includes a hopper body portion including an electrolyte inlet formed at one end portion, an electrolyte injection port formed at the other end portion, and a hollow connecting the electrolyte inlet and the electrolyte injection port and a buffer portion formed in a center of the electrolyte injection port of the hopper body portion. (Representative figure: 2)

The present disclosure provides a busbar frame assembly structure including a busbar frame, a hinge coupler connected to a battery module case and formed in an upper and lower multi-stage structure, and a hinge pin coupled to an upper end portion of the busbar frame.

According to an embodiment disclosed in this document, there is provided a battery diagnosis device including an interface configured to acquire a capacity profile representing a voltage with respect to a capacity of a battery cell including an electrode based on a lithium iron phosphate (LFP) material and at least one processor, in which the at least one processor is configured to acquire a first differential capacity profile representing a capacity change of the battery cell with respect to a voltage change of the battery cell, divide an entire voltage range included in the first differential capacity profile into one or more voltage ranges, and identify positive electrode degradation of the battery cell based on a first voltage range among the one or more voltage ranges.

An electrode assembly according to an embodiment of the present invention is a jelly-roll type electrode assembly having a structure in which a first electrode, a second electrode, and a separator interposed therebetween are wound in one direction, wherein the first electrode includes a first electrode in-tab and a first electrode outer tab attached to the first electrode and protruding in one direction parallel to a winding axis, and the first electrode in-tab and the first electrode outer tab each include a resin application portion in which a resin is applied to at least a partial region.

The present disclosure relates to a heater and a test cell including the same, and more particularly, to a heating unit for applying heat to a separator exposed beyond a positive electrode or a negative electrode to induce thermal runaway rapidly, in order to prevent damage to an outer packaging during a test for preventing thermal propagation of a battery cell, and a test cell including the same. The test cell according to the present disclosure includes an electrode assembly, a cylindrical outer packaging accommodating the electrode assembly, and a heater formed to be bent along a circumferential direction of the outer packaging and disposed at an outer circumferential surface of the outer packaging to generate heat, and the heater is disposed closer to an end in a length direction of the outer packaging than a center in the length direction of the outer packaging.

A battery cell according to one embodiment of the present invention comprises: an electrode assembly; a battery case for accommodating the electrode assembly; and a cap assembly disposed on an upper portion of the battery case and comprising a top cap; wherein the top cap comprises a return portion that is bent from an edge of the top cap and extends toward the center of the top cap. The battery cell and battery pack according to the present invention have the effect of enhanced impact resistance against external impact (crush).

According to an embodiment disclosed in this document, there is provided a battery diagnosis device including a memory configured to store a voltage profile that represents a voltage change with respect to a capacity change of a battery cell containing an electrode based on a lithium manganese iron phosphate (LMFP) material and a nickel, cobalt, manganese (NCM) material and at least one processor, in which the at least one processor is configured to identify a first section and a second section determined based on a phase transition of the LMFP material and the NCM material in the voltage profile and identify a loss of lithium inventory (LLI) rate of the battery cell, a first capacity loss rate corresponding to the LMFP material, and a second capacity loss rate corresponding to the NCM material, based on the first section and the second section.

The present disclosure relates to a pouch film laminate comprising a base layer, a gas barrier layer, and a sealant layer, which are sequentially laminated, wherein the sealant layer comprises a first sealant layer disposed adjacent to the gas barrier layer and a second sealant layer laminated on the first sealant layer, the second sealant layer includes polypropylene (PP) modified with siloxane, and the polypropylene (PP) modified with siloxane has a weight average molecular weight of 100,000 to 500,000.

Disclosed is a battery module, which includes a plurality of battery cells stacked on one another and respectively having electrode leads protruding on at least one side thereof, and a bus bar assembly configured to electrically connect the electrode leads of the plurality of battery cells and having at least one lead slot through which electrode leads of two battery cells adjacent to each other pass in common.

A battery diagnosis method according to an embodiment of the present invention diagnoses a battery including a plurality of cells, and may comprise the steps of: measuring a cell voltage at regular time intervals; calculating a slope of the cell voltage for each time section determined according to the regular time intervals; and determining whether to initiate one or more cell diagnosis procedures performed in a cell voltage stabilization state, according to the cell voltage slope for each time section and a change tendency of an accumulated cell voltage slope.

According to exemplary embodiments, a battery manufacturing method is provided. The method includes: preparing a battery cell including a case including an electrode accommodating part having an electrode accommodating space and a gas pocket part having a gas pocket space, and an electrode assembly accommodated in the electrode accommodating space; inserting a needle of a gas release valve into the gas pocket part; activating the battery cell; and discharging gas collected in the gas pocket part using the gas release valve.

A system and method for managing battery reduce manufacturing costs by performing assignment of unique identification information to each of a plurality of batteries through a single hard-wired line even when the capacity of a battery required in a vehicle increases.

A tab notching apparatus according to the present disclosure includes a suction pipe having a suction hole through which a residual scrap moves, the residual scrap being formed in forming an electrode tab, and a cutting device configured to cut the residual scrap moving toward the suction hole, wherein the cutting device includes a cutter configured to slidably move.

The present disclosure relates to an electrode assembly and a secondary battery including the same, and more specifically, to an electrode assembly and a secondary battery including the same that may enable good electrolyte impregnation near the center part of the electrode assembly where compressive stress is high, thereby suppressing lithium deposition and thus controlling a phenomenon where the swelling of the electrode assembly is accelerated, and furthermore, may ultimately suppress the risk of rupture and abnormal heating behavior in the battery case.