Hyundai Motor Company

Kia Motors Corporation

Kia Corporation

Jin Hun Lee

Hun Woo Park

Young Pin Jin

Tae Geun Kim

Hyun Ju Ji

Oh Tak Kwon

Wook Il Jang

Seung Yong Lee

Jae Hun Jang

Sun Ae Park

Jae Ho Han

Young June Oh

Chui Wan Park

Chang Hwa Hyun

Chul Wan Park

An embodiment integrated cooling control valve applied to a fuel cell thermal management system (TMS) includes a ball valve having at least three layers, wherein the ball valve includes a valve housing including a first port fluidly connected to a fuel cell stack, a second port coupled to a cathode oxygen depletion (COD) heater, a third port coupled to an ion filter, a fourth port coupled to a radiator, and a fifth port coupled to a coolant supply pump, and a valve plate disposed within the valve housing and including at least three layers to open and close the first port, the second port, the third port, the fourth port, and the fifth port.

Integrated cooling control valve

An integrated cooling module of a fuel cell stack is attached to a housing of the fuel cell stack, and the integrated cooling module is connected to a plurality of components constituting a thermal management system of a fuel cell. In particular, the integrated cooling module includes: a first injection member defining flow paths guiding coolant into one or more components of the thermal management system of the fuel cell, and at least one second injection member coupled to the first injection member, and the coolants going through the components flow into the fuel cell stack through any one of the flow paths defined by the integrated cooling module.

Integrated cooling module of fuel cell stack and thermal management system including integrated cooling module

A thermal management system for a fuel cell vehicle is provided. The thermal management system includes a fuel cell stack, a heater configured to use power generated by the fuel cell stack, a radiator configured to cool a coolant, a pump configured to circulate the coolant, and a valve configured to control a temperature of the coolant by adjusting a flow rate of the coolant supplied to the pump from at least one of the fuel cell stack, the heater, or the radiator.

Thermal management system for fuel cell vehicle

A fuel cell system comprising: a first line configured to pass through a fuel cell stack and allow a coolant to circulate therein; a pump provided in the first line; a second line having one end connected to the first line at a first point positioned between an outlet of the pump and the fuel cell stack, and the other end connected to the first line at a second point positioned between an inlet of the pump and the fuel cell stack; a heater provided in the second line to heat the coolant flowing along the second line; and a third line configured to pass through an air conditioning unit, connected to the first line between the first point and an outlet of the fuel cell stack, and configured to allow a part of the coolant to circulate therein.

Fuel cell system and method of operating same

The present disclosure provides a method of determining a coolant condition of a vehicle, and more particularly, a method of accurately determining a coolant condition, e.g., a condition in which gas is present in a system and an insufficient coolant condition without a separate additional sensor in a vehicle using an electric water pump (EWP). To this end, the present disclosure provides a method of determining a coolant condition of a vehicle, including, in a vehicle including an electric water pump (EWP) for circulating a coolant, acquiring driving state information of a water pump while the water pump is driven, by a controller, calculating a ripple value of a driving state from the acquired driving state information of the water pump, by the controller, and comparing the calculated ripple value with a reference value to determine a condition of a coolant, by the controller.

Method of determining condition of coolant in vehicle

A method for diagnosing a lack of coolant includes: (a) determining whether a target revolution per minute (RPM) of a coolant pump is set to be constantly maintained for a first time, which is preset, or more, (b) calculating an actual average RPM and an actual average driving current of the coolant pump for a second time, which is preset to be shorter than the first time, when the target RPM is set to be constantly maintained for the first time, and (c) determining whether the coolant to be supplied to the coolant pump is insufficient, based on the actual average RPM and the actual average driving current.

Method for diagnosing lack of coolant supplied to coolant pump of vehicle

Growing community of inventors

Yongin-si, South Korea

Jin Hun Lee