Hyundai Motor Company

Kia Motors Corporation

Skc Co., Ltd.

The Chemours Company Fc, LLC

Sung Jin Chung

Kyu Il Lee

Hyejin Kim

Joon Yong Lee

Soon Woo Kwon

Sang Hoon Lee

Soon Il Jeon

Sung Gone Yoon

Heung Sik Kim

Jewon Yeon

Kyu-Hun Kim

Hak Soo Lee

Robert Clayton Wheland

Jae Won Jung

Sang Uk Kwon

Nam Woo Lee

Ralph Birchard Lloyd

Chang Seok Ryu

Kyuhun Kim

Ja Beom Koo

Ho Sung Kang

Haksoo Lee

James F Ryley

Ja Hoo Koo

The laminated film for bonding comprises: a first layer; a second layer disposed opposite to the first layer; and a third layer interposed between the first layer and the second layer, wherein the laminated film comprises a first end having a first thickness and a second end having a second thickness different from the first thickness, and a measuring area disposed between the first end and the second end and having a center thickness, wherein the center thickness is less than or equal to a middle value of the first thickness and the second thickness, wherein a penetration coefficient (F) at the measuring area is 1.35 kgf/mm*mm or more, and wherein, a ratio of a sum of a thickness of the first layer and a thickness of the second layer to a thickness of the third layer is 100:12 to 24.

Laminated film for bonding and light-transmitting laminate including same

A system for managing a battery for an eco-friendly vehicle may include: a main battery; an assistant battery; a main battery temperature management unit that is configured to maintain temperature of the main battery within a predetermined temperature range; an assistant battery charge unit that is configured to charge the assistant battery; a first measuring unit that is configured to measure a state of the assistant battery; a second measuring unit that is configured to measure a state of the main battery; and a that is configured to make controller that is configured to make the assistant battery be charged when the state of the assistant battery measured by the first measuring unit satisfies a predetermined charge condition, and that is configured to make the temperature of the main battery enter a predetermined temperature range when the temperature of the main battery measured by the second measuring unit is out of the predetermined temperature range.

System and method of managing battery for eco-friendly vehicle

A resin film for laminated glass, laminated glass including the resin film, and a process for manufacturing the laminated glass are disclosed. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 &#x3bc;m and a maximum static friction coefficient at 20&#xb0; C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35&#xb0; C. is 40 to 310 &#x3bc;m/N.

Resin film for laminated glass, and laminated glass and preparation thereof

Embodiments relate to a resin film for laminated glass, laminated glass comprising the resin film, and a process for manufacturing the laminated glass. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 &#x3bc;m and a maximum static friction coefficient at 20&#xb0; C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35&#xb0; C. is 40 to 310 &#x3bc;m/N.

A technique of diagnosing a fuel cell stack is provided. In particular, current and voltage of a fuel cell stack are measured during driving of a fuel cell vehicle and the current and voltage are sequentially stored. It is then determined based on the stored current whether the vehicle is being operated at constant current. Different factors are analyzed depending on whether the vehicle is being operated at constant current, and then it is determined whether the fuel cell stack is in a normal state. A moisture supply into the fuel cell stack is calculated if it is determined that the fuel cell stack is not in the normal state. Based on the calculated moisture supply, whether the fuel cell stack is in a dryout state is diagnosed.

Technique of diagnosing fuel cell stack

A method for synchronizing voltages of a fuel cell vehicle may synchronize the voltages of high voltage components in real time regardless of the completion of vehicle start-up in order to improve performance and control precision within a full range of operable voltages. The method includes a default voltage synchronization step in which, when the fuel cell vehicle starts, the voltages of the high voltage components are corrected based on an offset value, stored in advance in multiple auxiliary controllers for controlling the high voltage components, and the corrected voltages are further corrected according to a default voltage synchronization command of a main controller; and a real-time voltage synchronization step in which, after the default voltage synchronization step, the main controller transmits a target offset value to the auxiliary controllers, and the auxiliary controllers correct the voltages based on the target offset value.

Method for synchronizing voltage of fuel cell vehicle

The present disclosure relates to a passivation layer comprising a photocrosslinked fluoropolymer and a process for forming the layer. Passivation layers comprising the crosslinked fluoropolymer have low dielectric constants, low water absorptivity and are able to be photoimaged so as to provide the very fine features needed for modern electronic equipment.

Passivation layer comprising a photocrosslinked fluoropolymer

A system and method for diagnosing a fuel cell stack are provided. The method includes determining, by a controller, a time at which diagnosing the fuel cell stack is required based on a plurality of factors and driving a motor adjusted to a first efficiency value for a predetermined first reference time period based on the diagnosis determination. In addition, the controller is configured to drive the motor adjusted to a second efficiency value when the first reference time period has elapsed. A state of the fuel cell stack is then diagnosed based on a voltage variance of the fuel cell stack between driving the motor adjusted to the first efficiency value and second efficiency value.

Method and system for diagnosing fuel cell stack

A voltage synchronization method and system are provided. The system includes a main controller that is configured to determine whether voltage synchronization is possible. When the voltage synchronization is determined to be possible, the main controller is configured to transmit a voltage synchronization command to a plurality of auxiliary controllers. The plurality of auxiliary controllers are configured to adjust sensed voltages based on an output voltage of a fuel cell stack when the transmitted voltage synchronization command is received.

Voltage synchronization method and system

The present invention provides a technique for controlling creep torque to prevent a vehicle from rolling backward on an upward slope. In particular, a gradient of a road is calculated in real time from a detection value of a sensor and vehicle acceleration. A maximum creep torque for preventing roll-back caused by gravity according to the gradient is calculated using the gradient and vehicle information. A first creep torque reference is calculated based on the maximum creep torque and the vehicle speed. A second creep torque reference is calculated based on the maximum creep torque and the vehicle acceleration. A torque command value according to an operation state of a brake is calculated based on the first creep torque reference value and the second creep torque reference value and the gradient. In response, a torque output of a driving motor is controlled according to the calculated torque command value.

Method for controlling creep torque of a vehicle

A power-down control method of a fuel cell hybrid vehicle includes determining an operation mode when a key-off command is input. If the mode is a fuel cell mode, the method includes: converting a low voltage DC-DC converter connected to an auxiliary battery to a boost mode; maintaining a driving state of a high voltage part, powered by voltage from the auxiliary battery and boosted by the low voltage DC-DC converter; subsequently stopping operation of a fuel cell stack and turning off the high voltage part; and subsequently turning off the low voltage DC-DC converter. If the mode is a hybrid mode, the method includes: maintaining a driving state of the high voltage part, powered by voltage from a super capacitor; subsequently stopping operation of the fuel cell stack and turning off the high voltage part; subsequently turning off the DC-DC converters; and subsequently cutting power of the super capacitor.

Power-down control method of fuel cell hybrid electric vehicle

A regenerative braking system includes a capacitor which is electrically connected to a stack and is charged by the stack, a traction motor, a motor control unit which control electric power input to the traction motor and electric power output from the traction motor, a chopper which is connected to the capacitor so as to be ON and OFF switched thereby limiting charging voltage of the capacitor, a braking resistor which consumes regenerative energy so as to serve as an auxiliary brake, and a hybrid control unit which turns on the chopper in case that a charging voltage limit of capacitor is exceeded so as to control overcharge of the capacitor and turns off the chopper in case that charging voltage of the capacitor descends. The capacitor is preferably a super capacitor.

Growing community of inventors

Seongnam, South Korea

Sung Jin Chung