Hyundai Motor Company

Kia Corporation

Chang Gi Ryu

Dae Hyun Song

Woo Jin Lee

Seung Ryeol Lee

Chun Kyu Kwon

Xue Shan Tang

Dong Ju Ko

Hyun Hun Choi

In Uk Ko

Jong Dae Gwak

Jae Min Chae

Soo Ii Lee

A refrigerant amount monitoring and charging control system for an electric vehicle and a method thereof include: a controller; a battery management module electrically connected to the controller; a high-speed charging gun connected to the vehicle when the vehicle is charged and configured to generate a high-speed charging signal during performing high-speed charging and to send the high-speed charging signal to the controller; an ambient temperature sensor electrically connected to the controller and configured to obtain an ambient temperature and to send the obtained ambient temperature to the controller; and a chiller including an electronic expansion valve and an evaporator. A situation where a vehicle battery is unable to be cooled by a refrigerant due to an insufficient refrigerant amount may be prevented by controlling charging power based on a monitoring result of a current refrigerant amount.

Refrigerant amount monitoring and charging control system for electric vehicle and method thereof

A coolant system includes a battery coolant line fluidly connected to a battery, a power electronics coolant line fluidly connected to a power electronic component, a radiator coolant line fluidly connected to a radiator, a control valve configured to allow the battery coolant line, the power electronics coolant line, and the radiator coolant line to be fluidly connected to or separated from each other, a temperature sensor disposed in at least one of the battery coolant line, the power electronics coolant line, or the radiator coolant line, and a controller configured to control a switching operation of the control valve under a predetermined condition in a manner that fluidly connects a coolant line without any temperature sensor to a coolant line with the temperature sensor, and determine a temperature of a coolant passing through the coolant line without any temperature sensor based on a temperature sensed by the temperature sensor.

Vehicular coolant system and method of controlling the same

A method for controlling an electric heater of a vehicular heating, ventilation, and air conditioning (HVAC) system includes turning on the electric heater; determining whether an ambient air temperature of a vehicle is higher than or equal to a threshold ambient air temperature, and a battery temperature is lower than or equal to a threshold battery temperature; determining whether battery efficiency is lower than or equal to threshold efficiency when the ambient air temperature of the vehicle is higher than or equal to the threshold ambient air temperature, and the battery temperature is lower than or equal to the threshold battery temperature; and turning off the electric heater when the battery efficiency is lower than or equal to the threshold efficiency, wherein the electric heater is configured to receive electric energy from the battery.

Method for controlling electric heater of vehicular HVAC system

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Seoul, South Korea

Chang Gi Ryu