Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Kil Young Youn

Jinho Kim

Jin Ho Kim

Jae Sang Lim

Gu Bae Kang

Sang Kyu Lee

Seung Hyeon Bin

Young Un Kim

Ji Wan Cha

Jeong Won Rho

Jae Hwa Jeon

Ki Chang Kim

Seong Min Kim

Jae Hee Jeon

Seong Yeop Lim

Jeongbin Yim

Kichang Kim

Jung Moon Chang

Jeong Won Roh

Seong Min M Kim

A method for equalizing SOCs of battery packs in an electric vehicle, may include acquiring, by a controller, SOC information of the battery packs from battery pack state information acquired by state detectors under predetermined conditions of the electric vehicle, determining, by the controller, an average SOC value of the battery packs based on acquired SOC values of the respective battery packs, determining, by the controller, at least one battery pack required to be discharged for equalization of the SOCs of the battery packs among all the battery packs based on the SOC values of the respective battery packs and the determined average SOC value of the battery packs, and operating, by the controller, an electric load connected to the at least one determined battery pack required to be discharged to discharge the at least one determined battery pack required to be discharged.

Method for equalizing states of charge (SOCs) of battery packs in electric vehicle

A supplementary charging system for an auxiliary battery of an eco-friendly vehicle includes: a main battery; an auxiliary battery having a voltage lower than a voltage of the main battery; a low voltage DC-DC converter (LDC) stepping down the voltage of the main battery and providing the stepped-down voltage to the auxiliary battery; and a controller configured to select, when a periodic charge time of the auxiliary battery arrives, either a constant voltage charging method or a constant current charging method as a charging method based on an aging state of the auxiliary battery, and control the LDC to charge the auxiliary battery with a constant voltage or a constant current based on the selected charging method for a predetermined reference time. The controller terminates the charging when a cumulative charge current amount is greater than or equal to a predetermined reference cumulative charge current amount.

Supplementary charging system and method for auxiliary battery of eco-friendly vehicle

A cooling control system and method for an on-board charger of a plug-in vehicle drive an electric water pump using a cooling control map when the temperature of the on-board charger equipped in a plug-in vehicle is equal to or above an overheat prevention temperature. The cooling control system and the method determine an entry of an optimal cooling control mode to cool the on-board charger to a temperature at which charging operational efficiency is maximized when the temperature of the on-board charger is below the overheat prevention temperature. Thereby, the on-board charger is cooled and the standard charging efficiency and the charge depletion fuel economy of the plug-in vehicle is maximized.

Cooling control system and method for an on-board charger of a plug-in vehicle

A hybrid cooling system of a vehicle includes a first cooling system having an engine, a first radiator, and a first water pump. A second cooling system includes a PE system, a second radiator, and a second water pump. A first cooling passage connects the engine and the PE system. A second cooling passage connects the first radiator and the second radiator. A third cooling passage and a fourth cooling passage connect the first cooling passage and the second cooling passage. Three-way valves is provided in the third cooling passage and the fourth cooling passage, respectively, to enable integrated cooling or individual cooling by opening and closing of the three-way valves.

Hybrid cooling system and method thereof

A plug-in vehicle capable of wired-charging a battery through a charging connector using an external charger and a method for controlling the same are provided. The method for controlling charging of a vehicle configured to perform a charging operation using external power includes determining whether a refrigerant circulation device operates normally and the amount of refrigerant is normal when a temperature sensor of a charger malfunctions. When the refrigerant circulation device operates normally and the amount of refrigerant is normal, a temperature of the charger is estimated using a temperature of a heat dissipation device through which the refrigerant passes and the output of the charger is adjusted based on the estimated temperature.

Hybrid vehicle and method for controlling the same

The present disclosure provides a system and a method of controlling motor temperature for a green car including: a drive motor as a power source; a battery configured to provide a driving voltage to the drive motor; a water pump configured to supply coolant to the drive motor to cool the drive motor; a data detector configured to detect data regarding a driving state of the green car; and a vehicle controller configured to determine a driving mode based on the data regarding the driving state, to determine pump control rotation speed based on the driving mode, SOC of the battery, or motor temperature of the drive motor, and to operate the water pump based on the pump control rotation speed to change flow rate of the coolant supplied to the drive motor.

System and method for controlling motor temperature for green car

A method for diagnosing demagnetization of a motor of a vehicle can accurately diagnose an irreversible demagnetization state of a permanent magnet of a traction motor or a hybrid starter-generator (HSG) without additional hardware, while minimizing influence of irreversible demagnetization of the permanent magnet of the traction motor or the HSG on vehicle performance. The method includes acquiring operating state information of the motor, determining whether a diagnosis entrance condition including a state in which the motor performs an electricity generating operation is satisfied based on the acquired operating state information of the motor, acquiring a direct current (DC) value in diagnosis, and determining whether irreversible demagnetization occurs by comparing the acquired DC value in diagnosis with a pre-stored DC current value in a normal state of the permanent magnet.

Method for diagnosing demagnetization of motor of eco-friendly vehicle

A method and system for controlling a switching frequency of a vehicle are provided. The method includes monitoring, by a controller of the vehicle, a temperature of a motor, a temperature of a coolant, and a quantity of a coolant when a vehicle engine is turned on. Additionally a switching frequency of an inverter is adjusted based on the monitored temperature of the motor, the monitored temperature of the coolant, and the monitored quantity of the coolant.

System and method for controlling switching frequency

A method of forcibly charging a high-voltage battery using a motor and a Hybrid Starter Generator (HSG) is provided. The method forcibly charges the high-voltage battery with maximum charging power using the motor and the HSG simultaneously. Particularly, the method includes calculating maximum chargeable power for the high-voltage battery using three dimensional (3D) maximum charging power maps of the motor and the HSG and adjusting maximum charging power using energy integration during forced charging using the motor and the HSG simultaneously. Additionally, excessive temperature prevention logics are applied for protecting the motor and the HSG from an excessive temperature in a forced charging mode.

Forced charging method for PHEV vehicles using motor and HSG

An apparatus and a method for controlling a motor are provided. The apparatus for controlling a motor includes a temperature sensor that is configured to detect a temperature of an inverter, and a variable amplifier that is configured to variably set an amplification gain that corresponds to the detected temperature of the inverter and amplify and output a resolver signal output from a resolver based on the variably set amplification gain, based on an excitation signal. A controller is then configured to estimate a position of a motor rotor based on the amplified resolver signal to calculate a flux angle and an excitation signal generator is configured to generate the excitation signal that corresponds to the calculated flux angle and output the generated excitation signal to the resolver.

Apparatus and method for controlling motor

A method and apparatus that compensates for a velocity of a motor of fuel cell vehicle when a resolver is determined to have failed is provided. In particular, a wheel velocity sensor is configured to detect a wheel velocity of a driving wheel, and an ABS controller is configured to calculate an average wheel velocity and transmit the calculated average to a fuel cell controller (FCU). The FCU is configured to receive information related to the wheel velocity upon detecting that the resolver has failed, and control driving of the motor based on the data related to the wheel velocity so that the motor may maintain operation.

Apparatus and method of compensating for motor velocity of fuel cell vehicle

A control method and system for reducing tip-in shock includes fixing a wheel with a wheel brake of a vehicle when an engine of the vehicle starts. A motor position sensor value is detected when a motor connected to the wheel through a plurality of gears is operated forward by a forward torque and a motor position sensor value when the motor is operated backward by a backward torque, by applying the forward torque and the backward torque to the motor with the wheel being fixed. An entire backlash generated between the plurality of gears is calculated on the basis of the motor position sensor values. A driving current for driving the motor is applied to the motor in accordance with the calculated entire backlash.

Controlling method and system for reducing tip-in shock

A device for charging a battery with one of a direct current and an alternating current includes a power adapter for providing a power signal and a power signal determining unit. The power signal determining unit determines whether the power signal is an alternating current or a direct current and a power transmission route selector selects a first power transmission route for the direct current and a second power transmission route for the alternating current. A charger receives the power signal to charge the battery. A power selecting unit includes a unit for transmitting the power signal from the power adapter to the battery through the charger when the first power transmission route for the alternating current signal is selected. A unit for transmitting the power signal from the power adapter to the battery when the second power transmission route for the direct current signal is selected.

Growing community of inventors

Gyeonggi-do, South Korea

Kil Young Youn