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KR-102963400-B1 - INTERGRATED THERMAL MANAGEMENT SYSTEM FOR FUEL CELL MOBILITY

KR102963400B1KR 102963400 B1KR102963400 B1KR 102963400B1KR-102963400-B1

Abstract

A fuel cell mobility integrated thermal management system is introduced, comprising: a hydrogen storage tank in which high-pressure hydrogen supplied to a fuel cell stack is stored; a first turbine that rotates by the pressure of hydrogen discharged from the hydrogen storage tank; a refrigerant circulation line in which a refrigerant circulates and a compressor, condenser, expansion valve, and evaporator are installed; a second turbine that rotates by the high-pressure refrigerant discharged by the compressor; and a blower that receives the rotational force of the first turbine, the second turbine, or an electric motor, pressurizes outside air, and supplies it to an indoor air conditioning unit or a fuel cell stack.

Inventors

  • 김귀택

Assignees

  • 현대자동차주식회사
  • 기아 주식회사

Dates

Publication Date
20260508
Application Date
20201221

Claims (9)

  1. A hydrogen storage tank in which high-pressure hydrogen supplied to a fuel cell stack is stored; A first turbine that rotates by the pressure of hydrogen discharged from a hydrogen storage tank; A refrigerant circulation line through which the refrigerant circulates and in which a compressor, condenser, expansion valve, and evaporator are installed; A second turbine that rotates by high-pressure refrigerant discharged by a compressor; and A fuel cell mobility integrated thermal management system comprising: a blower that receives rotational power from a first turbine, a second turbine, or an electric motor, pressurizes outside air, and supplies it to an indoor air conditioning unit or a fuel cell stack.
  2. In claim 1, A fuel cell mobility integrated thermal management system characterized by pressurized outside air flowing through an outside air supply line, the outside air supply line branching into a fuel cell line and an air conditioning line, the pressurized outside air being supplied to a fuel cell stack through the fuel cell line and supplied to an indoor air conditioning unit through the air conditioning line.
  3. In claim 2, A fuel cell mobility integrated thermal management system characterized by the fact that the flow rate of each pressurized outside air discharged through a blower and supplied to an indoor air conditioning unit or a fuel cell stack is controlled by a regulator.
  4. In claim 1, A fuel cell mobility integrated thermal management system characterized by a blower that rotates by a first turbine during power generation of the fuel cell stack, pressurizes outside air to supply to the indoor air conditioning unit and the fuel cell stack, and additionally drives an electric motor to increase the pressurization force when the pressurization force of the outside air is insufficient.
  5. In claim 1, A fuel cell mobility integrated thermal management system characterized by a blower that rotates by a second turbine during indoor cooling and pressurizes outside air to be discharged into the indoor space through an evaporator.
  6. In claim 1, A fuel cell mobility integrated thermal management system characterized by an evaporator being provided inside an indoor air conditioning unit and a blower supplying pressurized outside air to the indoor air conditioning unit.
  7. In claim 6, A fuel cell mobility integrated thermal management system characterized by having a heater core provided inside the indoor air conditioning unit, and the heater core being connected to the coolant outlet of the fuel cell stack.
  8. In claim 7, A cooling water circulation line that circulates through the fuel cell stack via a water pump is further included, A fuel cell mobility integrated thermal management system characterized in that the coolant in the coolant circulation line passes through the fuel cell stack, then passes through the heater core and radiator through the control valve and joins, and the opening of the control valve is controlled according to the operating state of the fuel cell stack and whether indoor heating is required.
  9. In claim 6, An integrated thermal management system for fuel cell mobility characterized by having an electric heater provided inside the indoor air conditioning unit, and the electric heater operating when the temperature of the heater core is below a reference temperature.

Description

Integrated Thermal Management System for Fuel Cell Mobility The present invention relates to an integrated thermal management system for controlling the internal environment of a mobility vehicle, such as cooling of the fuel cell and heating and cooling of the passenger cabin, which is driven by a fuel cell. Mobility refers to all means capable of transporting people or cargo, and existing mobility vehicles have operated using internal combustion engines and fossil fuels. During operation, it is necessary to control the interior environment for the driver or passengers; when using internal combustion engines, the high temperature of exhaust gases allowed for interior temperature control using waste heat. As greenhouse gases generated from internal combustion engines and fossil fuels lead to rising global temperatures and environmental destruction, attention has focused on mobility powered by fuel cells and hydrogen. However, in the case of mobility utilizing fuel cells, the driving method is fundamentally different from that of mobility utilizing internal combustion engines; as well as the amount of waste heat and the required systems, significant modifications are required for environmental control. In particular, since fuel cells draw in air from the outside to humidify it and generate electricity through the reaction of hydrogen and oxygen, pressurizing the air flowing into the fuel cell is necessary. At this time, if a separate blower for pressurizing air is applied independently, there is a problem that it causes an increase in the weight, volume, and power consumption of the mobility. The matters described above as background technology are intended only to enhance understanding of the background of the present invention and should not be construed as an acknowledgment that they constitute prior art already known to those skilled in the art. FIG. 1 is a circuit diagram of a mobility integrated thermal management system according to one embodiment of the present invention. FIG. 2 is a blower of a mobility integrated thermal management system according to an embodiment of the present invention. Hereinafter, an embodiment of the present invention for achieving the aforementioned objectives and solving problems will be described in detail with reference to the drawings. Meanwhile, regarding the understanding of the present invention, detailed descriptions of known technologies in the same field will be omitted if such descriptions do not aid in understanding the core content of the invention. Furthermore, the technical concept of the present invention is not limited thereto and can be modified and implemented in various ways by those skilled in the art. FIG. 1 is a circuit diagram of a mobility integrated thermal management system according to one embodiment of the present invention, and FIG. 2 is a blower of a mobility integrated thermal management system according to one embodiment of the present invention. A fuel cell mobility integrated thermal management system according to the present invention for achieving the above objective comprises: a hydrogen storage tank (B) in which high-pressure hydrogen supplied to a fuel cell stack (A) is stored; a first turbine (100) that rotates by the pressure of hydrogen discharged from the hydrogen storage tank; a refrigerant circulation line (500) in which a refrigerant circulates and a compressor (510), a condenser (520), an expansion valve (530), and an evaporator (540) are installed; a second turbine (200) that rotates by the high-pressure refrigerant discharged by the compressor; and a blower (400) that receives the rotational force of the first turbine (100), the second turbine (200), or an electric motor (300), pressurizes the outside air, and supplies it to an indoor air conditioning unit or a fuel cell stack (A). Specifically, pressurization must be established inside the mobility to continuously provide fresh air, and for this purpose, a blower (400) is required to pressurize the outside air. In the present invention, the outside air is pressurized by utilizing high-pressure hydrogen gas used in the fuel cell stack and high-pressure refrigerant discharged through the compressor (510) inside the mobility, and additionally, an electric motor (300) is provided to pressurize the outside air and supply it to the indoor air conditioning or fuel cell. Referring to FIGS. 1 and 2, first, in FIG. 2, the rotating shaft of the blower (400) is connected to the rotating shaft of the first turbine (100), the second turbine (200), or the electric motor (300) and rotates, and is structured to pressurize the outside air through the blower (400). The first turbine (100) can be rotated by high-pressure hydrogen gas supplied to the fuel cell stack (A), and the second turbine (200) can be rotated by high-temperature, high-pressure refrigerant discharged from the compressor (510). The electric motor (300) can be used to operate the blower (400) in an auxiliary manner. Outside ai