Abstract: Provided are an electrode assembly, a battery, and a battery pack and vehicle including the same. An electrode assembly, in which a first electrode, a second electrode, and a separator interposed therebetween are wound about an axis to define a core and an outer circumferential surface. At least one of the first electrode and the second electrode includes, at a long side end portion, an uncoated portion exposed beyond the separator in a direction of the axis. At least a part of the uncoated portion is bent in a radial direction of the electrode assembly to define a bent surface region having overlapping layers of the uncoated portion. The bent surface region includes a welding target region having a number of the overlapping layers of the uncoated portion, and the welding target region extends along a radial direction of the electrode assembly.

Abstract: A battery includes an electrode assembly including a first electrode, a second electrode and a separator between the first electrode and the second electrode wound around a winding axis to define a core and an outer circumferential surface, the first electrode including a first uncoated region in which an active material layer is not coated along a winding direction; a housing accommodating the electrode assembly through an open portion at a lower end thereof; a first current collector coupled to the first uncoated region and disposed in the housing; a cap to cover the open portion; and a spacer between the first current collector and the cap and having a height corresponding to a distance between the first current collector and the cap.

Abstract: An air purification module comprises a housing having an interior space provided with an air inlet and an air outlet, and an axial type blowing fan, mounted in the housing, for moving air from the air inlet to the air outlet. The air purification module further includes an air purifying unit, provided on a flow path of the air, for purifying the air and a guide for reducing the flow rate of the air between the blowing fan and the air purifying unit. The air purifying unit includes a filter provided between the blowing fan and the air outlet and a light source unit for providing light to the filter.

Abstract: The present disclosure provides a waveguide display apparatus. The waveguide waveguide display apparatus of the present disclosure is a waveguide display apparatus for correcting curved surface reflection distortion, the waveguide display apparatus including a waveguide for guiding light inputted from the outside; a first diffractive optical element disposed at the waveguide, and diffracting the light inputted from the outside to the inside of the waveguide; and a second diffractive optical element disposed at the waveguide, and diffracting the light guided by the waveguide to output a plurality of diffracted lights in a direction of a curved surface reflector located outside, wherein the second diffractive optical element has a structure of a diffraction grating corresponding to a curvature of the curved surface reflector such that the diffracted lights are reflected at different locations of the curved surface reflector in directions parallel to each other.

Abstract: A battery includes an electrode assembly including a first uncoated region and a second uncoated region; a battery housing accommodating the electrode assembly and electrically connected to the second uncoated region; a cap to cover an open portion on bottom of the battery housing; a first electrode terminal passing through a partially closed portion of the battery housing and being electrically isolated from the battery housing; and a first current collector coupled to the first uncoated region and connected to the first electrode terminal.

Abstract: Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on an axis to define a core and an outer circumference. The first electrode includes an uncoated portion at a long side end thereof and exposed out of the separator along a winding axis direction of the electrode assembly. A part of the uncoated portion is bent in a radial direction of the electrode assembly to form a bending surface region that includes overlapping layers of the uncoated portion, and in a partial region of the bending surface region, the number of stacked layers of the uncoated portion is 10 or more in the winding axis direction of the electrode assembly.

Abstract: A camera module includes a housing, a reflective member positioned in the housing and changing a direction of light to a direction of an optical axis, a carrier carrying the reflective member and rotatable about a first axis with respect to the housing, and a first ball group disposed between the housing and the carrier, wherein the first ball group includes a main ball member providing the first axis of the carrier, and an auxiliary ball member disposed away from the first axis, and one or both of the housing and the carrier partially accommodates the auxiliary ball member, and includes an auxiliary guide groove extended in a circumferential direction of the first axis.

Abstract: A hydrogen supply system for fuel cells and a method of controlling the same include a hydrogen supplier connected to a hydrogen provider and configured to receive hydrogen from the hydrogen provider through a supply valve, a supply line, a discharge line, a discharge valve provided on the hydrogen supplier to discharge by-products, collected in the hydrogen supplier, to the outside thereof, and a controller electrically connected to the supply valve and configured to set a basic duty of the supply valve based on a basic control map, to set a compensation duty of the supply valve depending on feedback control, and to set a final duty of the supply valve through the basic duty and the compensation duty.

Abstract: A reflective module assembly include a housing having an internal space, a first reflective module provided in the housing to change a path of incident light, and a second reflective module provided in the housing to change a path of light emitted from the first reflective module. The first reflective module includes a first reflective member rotatable about a first axis formed by at least two first ball members. The second reflective module includes a second reflective member rotatable about a second axis, perpendicular to the first axis and passing through a rotation axis ball provided at the second reflective module.

Abstract: A camera module includes a housing, a reflective member positioned in the housing and changing a direction of light to a direction of an optical axis, a carrier carrying the reflective member and rotatable about a first axis with respect to the housing, and a first ball group disposed between the housing and the carrier, wherein the first ball group includes a main ball member providing the first axis of the carrier, and an auxiliary ball member disposed away from the first axis, and one or both of the housing and the carrier partially accommodates the auxiliary ball member, and includes an auxiliary guide groove extended in a circumferential direction of the first axis.

Abstract: An air supply system for fuel cells includes a fuel cell, an air supply line connected to a cathode of the fuel cells to supply external air to the cathode of the fuel cell, an air pressure sensor provided on the air supply line, and configured to measure a pressure in the air supply line, a determiner configured to determine whether correction for the air pressure is necessary, and a controller connected to the determiner and configured to perform the correction for the air pressure sensor by performing voltage control of the fuel cell, upon determining that the correction for the air pressure sensor is necessary.

Abstract: A control system for a fuel cell vehicle includes a driving motor of the fuel cell vehicle, a brake system of the fuel cell vehicle, and a controller configured to derive a required target regenerative braking torque when the fuel cell vehicle rolls in an opposite direction to a traveling direction on a slope and, when an available regenerative braking torque of the driving motor is less than the required target regenerative braking torque, control the brake system to generate braking torque by as much as a difference between the required target regenerative braking torque and the available regenerative braking torque.

Abstract: Proposed are a fuel cell system and a method of controlling the fuel cell system. The fuel cell system includes: a hydrogen supply unit connected to a hydrogen inlet side of a fuel cell stack, with a supply valve and a sensor being provided in the hydrogen supply unit; a hydrogen discharge unit connected to a hydrogen outlet side of the fuel cell stack, with a water trap and a purge valve being provided in the hydrogen discharge unit; and a controller configured to calculate an amount of hydrogen discharged through the purge valve from an amount of hydrogen supplied to the fuel cell stack and an amount of hydrogen consumed therein, and to perform compensation control of the supply valve when the amount of the discharged hydrogen is at or above a reference value.

Abstract: A system and a method for estimating a hydrogen concentration of a fuel cell include the fuel cell, a discharge line connected to an outlet side of a fuel cell hydrogen electrode while connecting the fuel cell to an exterior of the fuel cell, for communication between the fuel cell and the exterior of the fuel cell, a discharge valve provided at the discharge line and configured to adjust the communication between the fuel cell and the exterior of the fuel cell, and a controller configured to cut off the discharge valve during operation of the fuel cell, to check occurrence of degradation of the fuel cell, and to correct a crossover coefficient value of the fuel cell in accordance with a level of the degradation in the fuel cell when the degradation of the fuel cell has occurred, estimating a hydrogen concentration in an interior of the fuel cell.

Abstract: An optical image stabilization module is provided. The optical image stabilization module includes a housing having an inner space; a moving holder that is equipped with a reflective member configured to receive light incident from the outside and change a path of the received light to transmit light having the changed path along an optical axis direction, and is accommodated in the inner space; a guide member that includes a pivot plate interposed between an inner wall of the housing and the moving holder and a support arm protruding from the pivot plate to extend along the optical axis direction; and a rolling member disposed at one end of the support arm.

Abstract: Disclosed are a system and a method for fuel supply control for a fuel cell. The system includes a fuel supply line, a fuel supply valve, a base duty calculator configured to estimate a required supply amount of a fuel gas required for the fuel supply line on the basis of a power generation state of the fuel cell and to calculate a base duty instruction to open the fuel supply valve on the basis of the estimated required supply amount, and a valve controller.

Abstract: A device and a method for controlling updates of ECUs of a vehicle are provided. A communication device receives a request for associated software updates of electronic control units (ECUs) arranged within a vehicle, and a controller determines whether to start the vehicle based on a state of charge (SOC) of a battery. The controller performs updates of ECUs in a first group in a start on state of the vehicle, and performs updates of ECUs in a second group in a start off state of the vehicle to complete a software update for a function involving the plurality of ECUs.

Abstract: The present disclosure relates to an apparatus for controlling an operation of a fuel cell system and a method therefor. The present disclosure may include a voltage sensor that measures an output voltage of a fuel cell stack, an air compressor that supplies air to a cathode of the fuel cell stack, a valve driver that adjusts an opening degree of an Airflow Control Valve (ACV), and a controller that, in an idle stop state, drives the air compressor at a lowest level and controls the opening degree of the ACV such that the output voltage of the fuel cell stack maintains a reference range.

Abstract: Disclosed are a device and a method for controlling a fuel cell system, in which during operation of the fuel cell system, the device and method determine a minimum motoring current limit value applied to a motor for driving a fuel cell vehicle by varying an output current limit threshold value of the fuel cell stack by determining an available output current of the stack and by varying an available voltage lower limit threshold value of the stack by determining an available operating voltage of the stack, thereby preventing the fuel cell vehicle from rattling due to excessive limitation of output current of the stack. They also control the pressures of an anode and a cathode of the stack by monitoring whether the performance of the stack is degraded as limitation of output current of the stack is suppressed, thereby suppressing degradation of the performance of the stack.

Abstract: An apparatus of operating an OTA update for a vehicle includes an input device receiving approval information for approving an OTA update process of a vehicle from a user and an execution device executing one of a first process or a second process in response to the approval information being entered. Each of the first process and the second process includes at least one of a battery charging process of a battery in the vehicle or the OTA update process of the vehicle.