Abstract: A sealing member of a multi-direction changeover valve for maintaining air-tightness between an orifice formed in a valve body rotatably installed in a valve housing and a port through which fluid flows into or out of the valve housing. The sealing member includes an annular seal part and an annular frame inserted into the seal part to support the seal part such that the seal part is brought into close contact with an inner circumferential surface of the port.

Abstract: A coolant bypass structure includes a main loop forming a channel in which coolant circulates; a bypass loop connected to the main loop and forming a selective bypass channel; and a stack bypass valve provided between the main loop and the bypass loop to open and close the bypass loop according to a predetermined temperature, and provided with an outlet temperature sensor. The coolant bypass structure may improve marketability by decreasing the starting time of the fuel cell vehicle in a frozen state and improve power efficiency.

Abstract: A mechanical valve for adjusting coolant flow which may be opened and closed based on the pressure of a coolant and a fuel cell cooling system using the same are provided. The valve has a mechanical valve structure to be opened and closed by the pressure of a coolant introduced into a coolant inlet and thus blocks and permits the coolant circulated to an ion filter line during operation of a fuel cell stack at the maximum output. The valve performs a coolant flow blocking function executed by a conventional electronic valve and thus a fuel cell cooling system has a simplified structure using the valve.

Abstract: An apparatus for manufacturing a heat exchanger for a vehicle has a plurality of cooling panels bonded to each other by pressing a cooling panel module where the plurality of cooling panels are stacked vertically, including: a fixing portion for supporting top and bottom ends of the cooling panel module; and a pair of elastic portions that are provided between the top or bottom end of the cooling panel module and the fixing portion, and are arranged symmetrically based on a top or bottom surface of the cooling panel module to compress the cooling panel module.

Abstract: A mechanical valve for adjusting coolant flow which may be opened and closed based on the pressure of a coolant and a fuel cell cooling system using the same are provided. The valve has a mechanical valve structure to be opened and closed by the pressure of a coolant introduced into a coolant inlet and thus blocks and permits the coolant circulated to an ion filter line during operation of a fuel cell stack at the maximum output. The valve performs a coolant flow blocking function executed by a conventional electronic valve and thus a fuel cell cooling system has a simplified structure using the valve.

Abstract: A device for preventing over pressure of a cooling system of a fuel cell system is provided. The device detects a change in a temperature of a coolant discharged from a fuel cell stack and prevents over pressure of the cooling system before pressure of the coolant is elevated by the increase in the temperature. In particular, a coolant pump circulates a coolant to a fuel cell stack, a radiator radiates heat absorbed in the coolant, and a temperature sensor detects a temperature of the coolant discharged from the fuel cell stack the device. The system further includes an electronic valve mounted in a pillar neck of the radiator connected with a reservoir for supplementing a coolant to open and close the pillar neck and a fuel cell controller that operates the electronic valve based on a signal of the temperature sensor.

Abstract: A de-mineralizer for a fuel cell includes a cartridge assembly including an external outer cartridge and an internal inner cartridge installed inside a housing filled with ion resin, wherein at least one of the inner cartridge and the outer cartridge includes an etching network formed with a plurality of fine holes, in which at least one of a size and distribution of the fine holes are formed differently depending on the respective positions based on a vertical flow direction of the cooling water, and a frame formed on an outer circumferential surface of the etching network to support the etching network.

Abstract: An apparatus for discharging water in exhaust fluid is disclosed. The apparatus includes a body having an inlet disposed on an exhaust path for exhausting exhaust fluid exhausted from a fuel cell stack to the outside and through which the exhaust fluid is introduced, an outlet communicating with the outside, an interior space allowing the inlet and the outlet to communicate each other, and a discharge passage communicating with the outside to discharge water in the interior space. The apparatus further includes a first resistance unit disposed on a flow path along which the exhaust fluid flows in the interior space and having first fine holes through which at least a portion of the exhaust fluid passes, and a second resistance unit disposed on a discharge path along which the water in the interior space is discharged through the discharge passage and having second fine holes through which the water passes.

Abstract: An ion filter life perception device for a fuel cell vehicle is provided to detect a replacement life of a fuel cell ion filter cartridge. The device includes a body part that is installed within an ion filter and has an ion resin filled therein. A checker is disposed within the body part and has a varying position based on a volume of the ion resin. In addition, an elastic member is disposed between a first side end in the body part and the checker to push the checker within the body part by elasticity.

Abstract: A thermal management system and method for a fuel cell vehicle is provided. In particular, a radiator, a 3-way valve, a pump, a heater, and a stack are all connected in that order. The system is capable of selectively de-mineralizing and providing an increase in flow rate by connecting a de-mineralizer line to a port at a bypass line side of a 3-way valve.

Abstract: A flow control baffle apparatus for a vehicle heater is provided. The flow control baffle apparatus implements a flow control function of a fluid passing through the interior of a heater and improves the heat transfer performance of the heater. The flow control baffle apparatus for a vehicle heater includes a plurality of heater pipes that are disposed within the interior of a heater and a baffle pivotably disposed at both sides of the heater pipe to adjust the flow of a fluid. Wherein the baffle adjusts the flow rate of a fluid passing through the heater.

Abstract: A mechanical valve for adjusting coolant flow which may be opened and closed based on the pressure of a coolant and a fuel cell cooling system using the same are provided. The valve has a mechanical valve structure to be opened and closed by the pressure of a coolant introduced into a coolant inlet and thus blocks and permits the coolant circulated to an ion filter line during operation of a fuel cell stack at the maximum output. The valve performs a coolant flow blocking function executed by a conventional electronic valve and thus a fuel cell cooling system has a simplified structure using the valve.

Abstract: An ion filter roof structure of a fuel cell for a vehicle is provided and includes a controller that is connected to a heater, a pump, a 4-way valve, and a radiator disposed within a fuel cell for a vehicle. In addition, a thermal management system of the ion filter roof structure includes an ion filter and a fuel cell stack connected to the controller to form an ion filter roof. Based on this structure, during high output, a cooling performance of the vehicle is improved, durability of the ion filter is improved, and a pump operation is decreased to improve fuel efficiency.

Abstract: A valve for controlling the temperature of a coolant to flow into a fuel cell stack to provide the optimum level of coolant at the appropriate temperature in order to keep the operation of the fuel cell stack stable is provided. In particular, new type of seal that can achieve maximum sealability with minimized friction force on a plunger shaft by changing the shape and structure of a seal for sealing the plunger shaft. As such, the valve provides a coolant control valve for a fuel cell stack in a fuel cell vehicle which can improve durability in addition to preventing water leakage and can contribute to reducing the manufacturing cost via reduction of the number or parts and simplification of the structure by removing peripheral parts all while sufficiently sealing the valve.

Abstract: A thermal management system is provided which may be miniaturized and may have a reduced weight by integrating thermal management parts in a fuel cell vehicle. In particular, a new type of thermal management system integrated housing in which a housing of a pump housing part, a housing of a 3-way valve fluid part, and a bypass channel among parts of the thermal management system for a fuel cell vehicle are integrated into a single structure to reduce the size of the overall system.

Abstract: A de-mineralizer for a fuel cell includes a cartridge assembly including an external outer cartridge and an internal inner cartridge installed inside a housing filled with ion resin, wherein at least one of the inner cartridge and the outer cartridge includes an etching network formed with a plurality of fine holes, in which at least one of a size and distribution of the fine holes are formed differently depending on the respective positions based on a vertical flow direction of the cooling water, and a frame formed on an outer circumferential surface of the etching network to support the etching network.

Abstract: A flow control baffle apparatus for a vehicle heater is provided. The flow control baffle apparatus implements a flow control function of a fluid passing through the interior of a heater and improves the heat transfer performance of the heater. The flow control baffle apparatus for a vehicle heater includes a plurality of heater pipes that are disposed within the interior of a heater and a baffle pivotably disposed at both sides of the heater pipe to adjust the flow of a fluid. Wherein the baffle adjusts the flow rate of a fluid passing through the heater.

Abstract: An ion filter lifetime perception device for a fuel cell vehicle is provided that detects a replacement lifetime of a cartridge of a fuel cell ion filter. The ion filter lifetime perception device includes a mesh tube body that is mounted in an ion filter and contains an ion resin filed therein. A checker is disposed at the mesh tube body to be movable toward a first end and a second end of the mesh tube body. The checker is exposed to the exterior of the mesh tube body and has a second end inserted into the mesh tube body. In addition, an elastic member is disposed between the second end of the checker and the first end of the mesh tube body to push the checker from the first end to the second end of the mesh tube body by elasticity.

Abstract: An ion filter roof structure of a fuel cell for a vehicle is provided and includes a controller that is connected to a heater, a pump, a 4-way valve, and a radiator disposed within a fuel cell for a vehicle. In addition, a thermal management system of the ion filter roof structure includes an ion filter and a fuel cell stack connected to the controller to form an ion filter roof. Based on this structure, during high output, a cooling performance of the vehicle is improved, durability of the ion filter is improved, and a pump operation is decreased to improve fuel efficiency.

Abstract: An ion filter life perception device for a fuel cell vehicle is provided to detect a replacement life of a fuel cell ion filter cartridge. The device includes a body part that is installed within an ion filter and has an ion resin filled therein. A checker is disposed within the body part and has a varying position based on a volume of the ion resin. In addition, an elastic member is disposed between a first side end in the body part and the checker to push the checker within the body part by elasticity.