LG Energy Solution Patente

The present disclosure relates to an electrode lead assembly and a secondary battery, and more specifically, to an electrode lead assembly provided to be connected to an electrode assembly and a secondary battery that includes such an electrode lead assembly and can be repeatedly charged and discharged. An electrode lead assembly according to an embodiment of the present disclosure may include an electrode lead provided to be connected to an electrode assembly; a lead film covering at least a portion of the electrode lead; and a flow path forming portion disposed between the electrode lead and the lead film and forming a flow path through which fluid flows, wherein the lead film may include a first portion; and a second portion thicker than the first portion, and the first portion may be provided on one side of the flow path forming portion.

Disclosed are a unit cell stacking apparatus including a conveyor belt configured to allow a unit cell to be seated thereon and to transfer the unit cell to one side or the other side, a transfer unit configured to transfer the unit cell while suctioning an upper surface of the unit cell, an image capturing unit configured to capture an image of the unit cell, a controller configured to determine whether the unit cell is defective based on information received from the image capturing unit, a stacking unit configured to allow a normal unit cell determined to be normal by the controller to be stacked thereon, and an ejection unit configured to eject a defective unit cell determined to be defective by the controller, and a unit cell stacking method using the same.

Disclosed are a pouch-shaped battery cell including an electrode assembly in which a positive electrode and a negative electrode are stacked with a separator interposed therebetween and a pouch-shaped battery case having an electrode assembly receiving portion configured to receive the electrode assembly, wherein the pouch-shaped battery case includes a first case and a second case, the first case and the second case are coupled to each other such that outer peripheries thereof are aligned with each other to form a sealed portion, and the sealed portion is a roll-shaped sealed portion wound in the shape of a roll, a sealed portion rolling apparatus for the pouch-shaped battery cell, and a sealed portion rolling method using the same.

The present disclosure relates to a clamping device, and the clamping device according to an aspect of the present disclosure is designed to form an upper part of a cylindrical case accommodating an electrode assembly inside, and includes a movable block; an actuator configured to move the movable block; a fixed block fixed to one side of the movable block to limit a movement distance of the movable block; a support frame configured to move up and down in a vertical direction as the movable block moves; and a forming unit supported by the support frame and configured to form the upper part of the case.

The present disclosure relates to a lithium secondary battery including a positive electrode; a negative electrode facing the positive electrode; a separator disposed between the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the positive electrode includes a first positive electrode active material and a second positive electrode active material, the first positive electrode active material includes lithium iron phosphate represented by Formula 1, the second positive electrode active material includes lithium nickel cobalt manganese oxide, and the non-aqueous electrolyte includes a lithium salt; a first solvent; and a second solvent, wherein the first solvent is a non-fluorinated carbonate organic solvent, and the second solvent is a compound represented by Formula 2, wherein a ratio (A/B) of a weight (A) of the first solvent to a weight (B) of the second solvent may be 0.67 or less.

The present disclosure relates to a battery case and a lithium secondary battery including the same. The battery case includes a metal-organic framework compound that adsorbs oxygen gas and/or hydrocarbon gas in the form of a gas adsorbent or a gas adsorbing film therein, and thus can effectively remove gas generated during operation of a secondary battery. Therefore, a lithium secondary battery including the same has excellent lifespan characteristics and safety.

The present invention provides a binder for a lithium secondary battery positive electrode, including a cationic polyvinylidene fluoride-based polymer substituted with an ammonium cation.

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.

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.

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.

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 battery diagnosis device according to an embodiment of this document includes a memory in which one or more instructions are stored and a processor configured to execute the at least one instruction, in which the processor is configured to identify, based on the fact that rack states of health (SOHs) of the respective elements of a plurality of battery racks are identified, a minimum SOH corresponding to a minimum value among the rack SOHs and a maximum SOH corresponding to a maximum value among the rack SOHs, identify, based on a warranty SOH of a battery including the plurality of battery racks and an accuracy of the warranty SOH, a plurality of sections according to the SOH of the battery for expressing the SOH of the battery, and acquire, based on the fact that the minimum SOH is included in a specific section among the plurality of sections, the SOH of the battery using at least one of the minimum SOH, the maximum SOH, and any combination thereof.

To achieve the above object, a battery module according to an exemplary embodiment of the present disclosure may include a cell frame configured to accommodate a battery cell; a bracket mounted on the cell frame; a fixing member mounted to the bracket and configured to secure a wire harness arranged above the bracket; and a fastening member configured to fasten the cell frame and the bracket.

According to an embodiment disclosed in this document, there is provided a battery management device including an interface configured to acquire a voltage profile representing a voltage relative to a capacity of a battery cell and at least one processor, in which the at least one processor is configured to identify at least one inflection point based on the voltage profile, identify a capacity of silicon contained in the battery cell using the at least one inflection point, and control charging or discharging of the battery cell based on the capacity of silicon.

A current collector plate welding device for a battery for welding a current collector plate to an electrode assembly according to one embodiment of the present invention comprises: a welding mask comprising an alignment pin arranged to protrude on one side; and a current collector plate carrier on which the current collector plate is disposed and comprising an alignment groove into which the alignment pin is inserted.The current collector plate welding device for a battery and the current collector plate welding method according to an embodiment of the present invention have the effect of improving the welding quality of the current collector plate by ensuring concentricity between the current collector plate carrier and the welding mask.

A battery includes a battery housing, an electrode assembly housed in the battery housing, a terminal gasket positioned in a through-hole extending through an end wall of the battery housing, an electrode terminal positioned within the terminal gasket so as to be spaced from the end wall, and a deformable element positioned between the end wall and the electrode terminal to bias the electrode terminal towards the end wall. The battery housing has a first electrical polarity, and the electrode terminal has an opposite second electrical polarity. The biasing element may be a spring washer in a compressed state. The biasing element has a higher melting point than the terminal gasket. Accordingly, upon melting of the terminal gasket during thermal runaway, the deformable element returns towards an undeformed state to cause the electrode terminal to electrically contact the battery housing to induce a short circuit.

A diagnosis apparatus of a battery cell sets an SOC of a battery cell through charging, stores SOC setting data immediately after setting the SOC, measures an impedance of the battery cell, corrects the impedance based on the SOC setting data to calculate a corrected impedance, and diagnoses a low-voltage defect of the battery cell based on the corrected impedance.

This document relates to a metal particle detection device including a first capacitance sensor configured to acquire a first capacitance value corresponding to a fluid moving in a predetermined direction on a flow path, a second capacitance sensor configured to acquire a second capacitance value corresponding to the fluid, a recovery unit positioned between the first capacitance sensor and the second capacitance sensor and configured to recover first metal particles contained in the fluid, and a processor configured to detect the first metal particles and second metal particles different from the first metal particles contained in the fluid based on the first capacitance value and the second capacitance value.

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.

A data analysis device according to an embodiment of the present disclosure may include a memory configured to store at least one instruction and at least one processor configured to execute the at least one instruction, and the at least one processor may acquire a set of data of a battery cell and a time interval at which data included in the set of data is acquired, identify a plurality of data regions including at least one of a plurality of first ranges for dividing a first state variable of the battery cell by a first magnitude, a plurality of second ranges for dividing a second state variable of the battery cell by a second magnitude, or any combination thereof, and diagnose a state of the battery cell based on battery data regions including the set of data among the plurality of data regions and a time that is identified according to the time interval and in which the data is included in each of the battery data regions.

A system for manufacturing a secondary battery assembly includes a stacking table configured to have a plurality of unit electrode cells having a unit electrode tab stacked thereon, to thereby form a cell stack with an electrode tab, and a transfer unit configured to sequentially pick a respective one of the plurality of unit electrode cells, move it to the stacking table and place on top of one another. The system further includes an adhesive spray unit configured to spray adhesive on at least a part of the unit electrode tab of the unit electrode cell placed at a top of the cell stack on the stacking table and a control unit configured to control the adhesive spray unit to perform the adhesive-spraying operation after one unit electrode cell is placed on the stacking table and before a next unit electrode cell is placed.

The invention relates to a battery module assembly method, comprising: providing K battery cells (110), K being a first integer; calculating a respective voltage drop (VD) of the K battery cells (110) due to a respective self-discharge of each of the multiple battery cells (110); selecting N battery cells (110) from the K battery cells (110), N being a second integer smaller than the first integer K; determining an extreme battery cell from the N battery cells (110) that exhibits a maximum voltage drop from the voltage drops (VD), or that exhibits a minimum voltage drop from the voltage drops (VD); calculating a summary statistic (M) as function of the voltage drops of the N battery cells (110) except for the extreme battery cell; calculating an A-value (A) of the N battery cells as function of the calculated summary statistic (M) and the voltage drop (VD) of the extreme battery cell; and if the A-value (A) is larger than a preset threshold (A<T>), removing the extreme battery cell from the N battery cells (110) and adding an alternative battery cell from the K battery cells (110) such that the N battery cells comprise the alternative battery cell and the N battery cells except for the extreme battery cell, wherein a second A-value (Λ) as calculated as function of the measure (M) and the voltage drop (VD) of the alternative battery cell is smaller than the preset threshold (A<T>). The invention further relates to a battery module (100).

Disclosed herein is a method for configuring a cooling tube for a battery cell array, a cooling tube for a battery cell array and a battery cell array. The method is for configuring a cooling tube having a plurality of channels allowing a cooling medium to pass therethrough, each channel extending along a length of the cooling tube. The method comprises determining a pressure drop ΔP across the cooling tube as a function of the number of channels N in the cooling tube and an aspect ratio D of the channels; determining an amount of deformation δ of one or more channels when the cooling tube is bent to fit an arrangement of battery cells of the battery cell array as a function of the number of channels N and the aspect ratio D of the channels; and determining a relationship of the number of channels N and the aspect ratio D of the channels to one or both of the pressure drop ΔP and the amount of deformation δ based on the determined pressure drop ΔP and the determined amount of deformation δ.

A battery management system includes a sensing unit to generate a sensing signal indicating a battery voltage and a battery current of a battery, a memory unit to store a charge map recording a correlation between first to n<th> reference state of charge (SOC) ranges, first to n<th> reference currents and first to n<th> reference voltages for multi-stage constant-current charging, and a control unit to change to constant voltage charging using a k<th> reference voltage corresponding to a k<th> reference SOC range in response to the battery voltage having reached the k<th> reference voltage during constant current charging using a k<th> reference current corresponding to the k<th> reference SOC range to which an SOC of the battery belongs. The control unit updates the k<th> reference current of the charge map based on a time-series of the battery current in a charging period of the constant voltage charging.

According to exemplary embodiments, a secondary battery is provided. The secondary battery may include: a cell case including an inner space; a thermal insulation partition wall separating the inner space into a plurality of accommodating spaces; electrode assemblies accommodated in each of the accommodating spaces; and venting covers overlapping each of the accommodating spaces. Each of the venting covers may be configured to rupture when an internal pressure of each corresponding accommodating space is equal to or greater than a reference pressure.

According to an embodiment of the present disclosure, provided is an electrode for a bipolar battery comprising: a positive electrode that comprises a positive electrode current collector, a first positive electrode primer layer formed on one surface of the positive electrode current collector, a second positive electrode primer layer formed on the other surface of the positive electrode current collector, and a dry positive electrode material layer formed on the first positive electrode primer layer, and a negative electrode that comprises a negative electrode current collector, a negative electrode material layer formed on one surface of the negative electrode current collector, and a second negative electrode primer layer formed on the other surface of the negative electrode current collector, wherein the second positive electrode primer layer of the positive electrode and the second negative electrode primer layer of the negative electrode are adhered in a direction facing each other, its manufacturing method, a bipolar assembly comprising the same, and a bipolar battery.

Disclosed are a quick charging device for charging a plurality of battery packs and a quick charging method using the same, and more particularly a quick charging device for charging a plurality of battery packs, the quick charging device including a positive electrode high-voltage terminal configured to supply voltage, a negative electrode high-voltage terminal configured to supply voltage, a plurality of DC/AC converters connected to each of the positive electrode high-voltage terminal and the negative electrode high-voltage terminal, a plurality of variable AC autotransformers connected respectively to the plurality of DC/AC converters, each of the variable AC autotransformers being configured to adjust a voltage value, a plurality of AC/DC converters connected respectively to the plurality of variable AC autotransformers, a plurality of resistor modules connected respectively to the plurality of AC/DC converters, and a controller connected to each of the variable AC autotransformers, the controller being configured to control the voltage value of each of the variable AC autotransformers.

According to exemplary embodiments, a wire-type secondary battery is provided. The wire-type secondary battery includes: a support including a core and a helical guide extending along a surface of the core; a first electrode helically wound along the surface of the core between the guides; a first separator layer provided on an outer side of the first electrode and helically wound along the first electrode; and a second electrode provided on an outer side of the first separator layer and helically wound along the first separator layer. The support includes: a first groove into which the first electrode is inserted; a second groove into which the first separator layer is inserted; and a third groove into which the second electrode is inserted. A width of the second groove is greater than a width of the first groove.

A method for manufacturing a secondary battery is provided. The method includes: collecting supply history data and manufacturing history data; and analyzing the supply history data and the manufacturing history data, wherein the manufacturing history data indicates a state of main equipment configured to perform a manufacturing process, and the supply history data indicates a state of a supply part configured to supply electrode rolls to the main equipment.

Provided are a positive electrode current collector plate configured to perform a stable fusing function while reducing resistance, and a battery and a vehicle comprising the same.A battery including a jelly-roll in which a positive electrode, a negative electrode, and a separator are wound in one direction further includes a can configured to accommodate the jelly-roll, a rivet configured to be electrically connected to the jelly-roll and pass through one side of the can, and a positive electrode current collector plate disposed between the jelly-roll and the rivet and including a rivet coupling portion coupled with the rivet and a plurality of tab coupling portions provided on a radially outer side of the rivet coupling portion so as to be coupled with the jelly-roll, wherein the positive electrode current collector plate further includes a pair of slits provided on an inner side of the plurality of tab coupling portions and disposed to be spaced apart from each other so as to face each other, and a fusing bridge forming a portion of the rivet coupling portion between the pair of slits and constituting a path of current flowing from the jelly-roll to the rivet.

A battery module that is easily mountable in a pack case and a battery pack including the same are disclosed. A battery module according to an embodiment of the present disclosure includes a battery cell stack in which a plurality of battery cells are stacked, and a busbar frame on one side of the battery cell stack. The busbar frame includes a busbar electrically connected to a plurality of electrodes of the plurality of battery cells, and a plurality of through holes for fixing to a lower surface of a pack case comprising a battery pack. The plurality of through holes extend through the busbar frame from an upper surface of the busbar frame to a lower surface of the busbar frame for coupling between the busbar frame and the pack case.

An apparatus for manufacturing a secondary battery assembly includes: a first hopper configured to contain a plurality of unit electrode cells; a stacking table configured to have the plurality of unit electrode cells stacked thereon to thereby form a cell stack; a transfer unit configured to sequentially pick a respective one of the plurality of unit electrode cells in the first hopper, move it to the staking table and place on top of one another; a detecting unit configured to detect a relative position of a unit electrode cell placed on top of the cell stack with respect to another unit electrode cell therebelow; and a control unit configured to determine whether or not the detected relative position of the top unit electrode cell is within a predetermined range with respect to the another unit electrode cell, wherein the control unit is further configured to, if the detected relative position is not within the predetermined range, remove the top unit electrode cell from the cell stack.

An apparatus for inspecting a coated electrode sheet for a secondary battery. The apparatus comprises: a radiation emitting part configured to emit an x-ray or a beta ray towards the coated electrode sheet; a radiation detecting part, disposed opposite the radiation emitting part so as to have the coated electrode sheet positioned therebetween, wherein the radiation detecting part is configured to detect an amount of the x-ray or the beta ray emitted by the radiation emitting part and transmitted through the coated electrode sheet, to thereby gauge the thickness of the coating; a first protective layer disposed between the coated electrode sheet and one of the radiation emitting/detecting parts to cover a surface of said one of the radiation emitting/detecting parts facing the coated electrode sheet; and a controller configured to relatively move the first protective layer parallel to said surface facing the coated electrode sheet, either at a predetermined constant speed or periodically by a preset length.

A monitoring system of monitoring a battery manufacturing process is provided. The system includes: a first server configured for storing a first coordinate-related data set in which coordinate data indicating lengthwise positions on an electrode are associated with inspection data and/or measurement data obtained from the positions of the electrode being subject to a plurality of manufacturing sub-processes, and an identification data set including an electrode identifier, ID, identifying a respective sectional electrode that has been obtained by cutting off a lengthwise section from the electrode, a memory storing instructions, and at least one processor configured to execute the instructions stored in the memory to perform operations of: 1) associating an electrode ID selected from the identification data set with the coordinate data of the first coordinate-related data set representing the lengthwise section of the electrode from which the sectional electrode identified by the electrode ID has been obtained, and 2) generating monitoring data on the battery manufacturing process based on the coordinate data associated with the electrode ID.

A battery cell according to the present disclosure includes an electrode assembly, a cell housing, and a can lid. The can lid may include an edge portion formed on an edge to be coupled to the cell housing; and an electrode coupling portion coupled to the electrode assembly and recessedly formed. The edge portion of the can lid has a profiled geometry configured to deform in the radial direction when engaging an inner surface of the cell housing in a press-fit manner.

An apparatus of manufacturing a battery module according to an embodiment of the present disclosure includes a guide plate that wraps a battery cell stack from left and right sides, with the battery cell stack being configured to stack a plurality of battery cells, wherein the guide plate comprises a body part in contact with the battery cell stack, and an insertion part connected to one end part of the body part and bent and protruded to the inner side of the battery cell stack; and the battery cell stack is inserted into the interior of the frame member whose upper part is opened by the insertion part.

Discussed is a battery pack including a plurality of battery cells; a bus bar assembly having a first side and a second side, the second side of the bus bar assembly provided to a first side of the plurality of battery cells and electrically connected to the plurality of battery cells; a cooling unit disposed at a second side of the bus bar assembly and arranged between the plurality of battery cells along a longitudinal direction of the battery pack; and side structure units configured to accommodate the cooling unit and the plurality of battery cells, wherein one side structure unit, a first set of the plurality of battery cells, the cooling unit, a second set of the plurality of battery cells and another side structure unit are coupled to be sequentially arranged in the named order along a width direction of the battery pack.

The present disclosure provides a positive electrode in which a positive electrode mixture containing a positive electrode active material is formed on a positive electrode current collector, wherein the positive electrode active material includes a lithium transition metal oxide powder represented by the following chemical formula 1, Li_aNi_xCo_yM_zO_2-wA_w (1)wherein, M is at least one selected from the group consisting of Mn, Ti, Mg, Al, Zr, Mn and Ni, A is an oxygen-substituted halogen, and 1.00≤a≤1.05, 0.1≤x≤0.8, 0.1≤y≤0.8, 0.01≤z≤0.4, and 0≤w≤0.001,wherein the lithium transition metal oxide powder is composed of: large particles in which secondary particles are formed by aggregating primary particles, and an average particle diameter (D50) of the secondary particles is 7 µm to 17 µm, and small particles in which single particles are formed and having average particle diameter (D50) of 2 µm to 7 µm, wherein a mixing ratio of the large particles and the small particles is 5:5 to 9:1 based on the weight, and wherein the positive electrode mixture has a porosity of 22% to 35%.

A battery test equipment leak inspection device according to a preferred exemplary embodiment of the present disclosure includes: a main tube detachably connected to an inspection target including a battery heating module or an inspection target including a flow meter connected to a battery heating module, and configured to communicate with an interior of the inspection target; a gas supply unit connected to the main tube and configured to supply a gas for leak inspection into the inspection target through the main tube; and a pressure measurement unit connected to the main tube and configured to measure a change in gas pressure in the main tube and the inspection target. According to the battery test equipment leak inspection device of the present disclosure, it is possible to secure test reliability by inspecting in advance whether there is a gas leak in battery test equipment before evaluating the thermal stability of a battery using the battery test equipment, and replacing or repairing the entire or part of the equipment when a leak is confirmed.

Disclosed are a leakage detection device including a moisture detection unit to which an absorption member is coupled, a fixing support portion configured to fix the moisture detection unit to a battery pack, and an extension portion configured to fix the moisture detection unit to the fixing support portion, wherein a lower end of the absorption member extends at least to a lower end of the fixing support portion, and a battery pack including the same. It is possible to rapidly detect even a small amount of coolant leakage.