Abstract: Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.

Abstract: A charging control apparatus measures a first temperature of a first secondary battery selected from the plurality of secondary batteries, a second temperature of a coolant flowing into the cooling device, a charging current of the secondary battery pack, a first terminal voltage of the first secondary battery and a second terminal voltage of a second secondary battery closest to the cooling device, estimates a temperature of a temperature estimation point of the second secondary battery from a lumped thermal model having a thermal resistance between two points selected from the temperature estimation point of the second secondary battery, the first temperature measurement point and the second temperature measurement point, and measurement data about temperature, current and voltage, and determines the estimated temperature as a minimum temperature of the secondary battery pack, and varies a charging power provided to the secondary battery pack according to the minimum temperature.

Abstract: Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.

Abstract: A dust cover for a steering apparatus of a vehicle includes a first cover coupled to an intermediate shaft in a state in which a bearing member is interposed and fixed to a vehicle body panel. The dust cover also includes a second cover coupled to the intermediate shaft in the state in which the bearing member is interposed and fixed to the vehicle body panel together with the first cover in a state of being bonded to the first cover. A tight contact rib in a long continuous shape along a periphery of the intermediate shaft is formed to protrude from the first cover such that the tight contact rib maintains airtightness between the first cover and the vehicle body panel in a state of being always in a tightly adhered state with the vehicle body panel.

Abstract: Disclosed is an analytic sensitivity expression for parameters of a battery electrochemical model, based on model reduction and reformulation techniques such as the single particle assumption, Padé approximation, and Laplace transform. The analytic expressions of sensitivity are in a compact form with explicit relationship to the current input, which enables the direct optimization of the input-dependent sensitivity. The current optimization with maximum sensitivity may be performed for several critical battery electrochemical parameters, namely a solid-phase lithium diffusion coefficient, a volume fraction of the electrode active material, and a reaction rate constant. The electrochemical parameter may be reliably identified using the optimal current profile.

Abstract: A platform service system and method for integrated battery management. The platform service system collects battery characteristic data of an electric vehicle through a network and accumulatively store the same to be matched with a battery identification code, calculates a current SOH of a battery by analyzing the battery characteristic data and store the same in a SOH history DB to be matched with the battery identification code, inquires the SOH history DB using the battery identification code to determine a current SOH when a reuse grade calculation request is received from a client along with the battery identification code, determines a reuse grade corresponding to the current SOH with reference to predefined reuse grade information for each SOH, and transmits the reuse grade to the client.

Abstract: A system for detecting hands-on or off of a steering wheel and a method thereof, include a direct sensor configured for detecting a hands-on sense value depending on a grip area of the steering wheel; an indirect sensor configured for detecting a hands-on sense value depending on a magnitude of a torque for rotating the steering wheel; and a controller connected to the first sensor and the second sensor and combining a direct hands-on sense value detected by the direct sensor and an indirect hands-on sense value detected by the indirect sensor to each other to determine a grip state of the steering wheel depending on a combined hands-on sense condition, and then to display and warn a result of determining the grip state of the steering wheel through an output unit.

Abstract: A battery service providing system and method, battery service providing system including a battery service server for collecting diagnostic analysis data including operation characteristic information of a battery and driving characteristic information of an electric vehicle from an electric vehicle control device and providing update information of a charging/discharging control logic of the battery according to the degree of degradation determined from the diagnostic analysis data to the electric vehicle control device, determining a residual value or a usage fee of the battery based on the determined degree of degradation, transmitting the usage fee or the residual value of the battery to an external server, or setting a warranty flag for the battery whose charging and discharging is controlled according to the update information of the charging/discharging control logic.

Abstract: A battery performance management system and method using an electric vehicle charging station. The battery performance management server collects battery performance evaluation information including identification information and operation characteristic accumulative information of a battery, identification information and driving characteristic accumulative information of the electric vehicle, and latest charging characteristic information of the battery from a plurality of charging stations through a network. The server determines a current state of health (SOH) corresponding to the collected battery performance evaluation information by using an artificial intelligence model that is trained in advance to receive the battery performance evaluation information and output a SOH of the battery.

Abstract: Disclosed is a method and a battery management system for periodically determining at least one of charge power limit and discharge power limit of a battery. The method according to an embodiment of the present disclosure includes predicting the terminal voltage and the net resistance of the battery after a predefined time from the current time using an equivalent circuit model for the battery, and determining the charge power limit or the discharge power limit of the battery from the predicted terminal voltage and net resistance.

Abstract: Provided is a method and a battery management system for estimating the parameters of an equivalent circuit model. The equivalent circuit model includes a first resistor, a second resistor connected in series to the first resistor and a capacitor connected in parallel to the second resistor. The method according to an embodiment of the present disclosure individually estimates the resistance of the first resistor and the resistance of the second resistor based on a first number of terminal voltages and a first number of currents measured in a sequential order at each time step in a sliding time window having a predefined size, and stores data indicating the estimated results in the memory.

Abstract: Disclosed is an apparatus and method for mining battery characteristic data, which calculates a particle surface concentration (cse,i) of lithium from a first state space model derived from a Pade approximation equation of a transcendental transfer function, calculates a change ratio ? ? c se , i ? ? ? ( t ) ? ? indicates text missing or illegible when filed of the particle surface concentration to the change in the active material volume fraction from a second state space model derived by the partial derivative of the Pade approximation equation, calculates a change ratio ? ? ? i ? ( t ) ? ? ? ? ? ? indicates text missing or illegible when filed of over-potential to the change in the active material volume fraction from the Butler-Vollmer equation, calculates a potential slope ? U i ? c se , i corresponding to the particle surface concentration by using an open circuit potential function, and stores voltage-current data in wh

Abstract: Disclosed is an apparatus and method for mining battery characteristic data, which calculates a particle surface concentration (cse,i) of lithium from a first state space model derived from a Pade approximation equation of a transcendental transfer function, calculates a change ratio ? c se , i ? ( t ) ? D s , i of the particle surface concentration to the change in the solid phase diffusion coefficient from a second state space model for the partial derivative of the solid phase diffusion coefficient (Ds,i) of the electrode with respect to the Pade approximation equation, calculates an open circuit potential slope ? U i ? c se , i corresponding to the particle surface concentration by using an open circuit potential function (Ui), and stores voltage-current data in which the sensitivity of the battery voltage to the solid phase diffusion coefficient of the electrode calculated from ? U i ? c se , i ? ? and ? ? ? c se , i ? ( t ) ? D

Abstract: A charging control apparatus measures a first temperature of a first secondary battery selected from the plurality of secondary batteries, a second temperature of a coolant flowing into the cooling device, a charging current of the secondary battery pack, a first terminal voltage of the first secondary battery and a second terminal voltage of a second secondary battery closest to the cooling device, estimates a temperature of a temperature estimation point of the second secondary battery from a lumped thermal model having a thermal resistance between two points selected from the temperature estimation point of the second secondary battery, the first temperature measurement point and the second temperature measurement point, and measurement data about temperature, current and voltage, and determines the estimated temperature as a minimum temperature of the secondary battery pack, and varies a charging power provided to the secondary battery pack according to the minimum temperature.

Abstract: Disclosed is an apparatus and method for controlling step charging of a secondary battery. A charging control unit determines a SOC, an OCV and a polarization voltage of the secondary battery, determines an OCV deviation corresponding to a difference between the OCV and a predefined minimum OCV value, determines a correction factor corresponding to the polarization voltage and the OCV deviation, determines a look-up SOC by correcting the SOC according to the correction factor, determines the magnitude of a charging current corresponding to the look-up SOC, and provides the determined charging current to a charging device.

Abstract: A horn plate assembly for a vehicle includes: a horn plate having a plurality of fastening holes; and fasteners fastened to a hub of a steering wheel through the fastening holes. Seating grooves having stepped cross-sections to the fastening holes are formed at the fastening holes, and portions of the fasteners are seated in the seating grooves when the fasteners are fastened to the hub of the steering wheel.

Abstract: Disclosed is a method and a battery management system for estimating the parameters of an equivalent circuit model for a battery. The equivalent circuit model includes a first resistor, a second resistor connected in series to the first resistor and a capacitor connected in parallel to the second resistor. The method according to an embodiment of the present disclosure individually estimates the resistance of the first resistor and the resistance of the second resistor based on a first number of terminal voltages and a first number of currents measured in a sequential order at each time step in a sliding time window having a predefined size, and stores data indicating the estimated results in the memory.

Abstract: Provided is a method and a battery management system for smoothing the power limit when charging or discharging a battery. The method according to an embodiment of the present disclosure includes determining a first weighting factor based on a maximum charge voltage and a terminal voltage of the battery, determining a second weighting factor based on a previous smoothed charge power limit, a current charge power limit and a current instantaneous power, setting a smaller one of the first weighting factor and the second weighting factor as a first reference weighting factor, and smoothing the current charge power limit based on the previous smoothed charge power limit and the first reference weighting factor.

Abstract: A steering column apparatus configured for vehicles may include a housing assembly, and a support assembly configured to be coupled to one side of the housing assembly to serve to absorb a tilt and an impact.

Abstract: A dust cover for a steering apparatus of a vehicle includes a first cover coupled to an intermediate shaft in a state in which a bearing member is interposed and fixed to a vehicle body panel. The dust cover also includes a second cover coupled to the intermediate shaft in the state in which the bearing member is interposed and fixed to the vehicle body panel together with the first cover in a state of being bonded to the first cover. A tight contact rib in a long continuous shape along a periphery of the intermediate shaft is formed to protrude from the first cover such that the tight contact rib maintains airtightness between the first cover and the vehicle body panel in a state of being always in a tightly adhered state with the vehicle body panel.