KR102655125B1 - Fuel efficiency improvement device for internal combustion engine vehicles using PEM water electrolysis stack - Google Patents

Abstract

According to one embodiment, a fuel efficiency improvement system for an internal combustion engine vehicle using a PEM water electrolysis stack includes a water tank that stores water for generating hydrogen through electrolysis, and the water provided from the water tank is used as electricity. An electrolysis cell that generates hydrogen by decomposition, a water separator that removes moisture contained in the hydrogen provided from the electrolysis cell and provides the removed moisture to the water tank, the water tank, and An electrically connected control unit, a hydrogen fuel cell that generates electricity by receiving hydrogen from which the moisture has been removed from the water separator, and an internal combustion engine that is driven using the electricity provided by the hydrogen fuel cell to improve fuel efficiency. May include engines.

Description

Fuel efficiency improvement device for internal combustion engine vehicles using PEM water electrolysis stack}

This disclosure relates to a fuel efficiency improvement device for an internal combustion engine vehicle using a PEM (Proton Exchange Membrane) water electrolysis stack.

Recently, demand for new and renewable energy has rapidly increased, and research on it has been actively conducted. In connection with new and renewable energy such as solar power, wind power, and tidal power, surplus electric energy is used in a water electrolysis stack to produce hydrogen, and the produced hydrogen is stored and supplied to a fuel cell, and used when energy is needed. Research and development is ongoing into new forms of energy storage.

Here, most of the hydrogen used to realize a modern hydrogen society is grain hydrogen, which is extracted hydrogen made by reforming natural gas and by-product hydrogen produced as a by-product of petrochemical processes.

However, gray hydrogen is far from reducing carbon compounds to solve recently emerging environmental problems, so the most widely known method is to obtain hydrogen using water electrolysis as a method that does not emit carbon dioxide or pollutants. . To this end, various water electrolysis methods are being developed depending on the operating environment and technology.

The purpose of water electrolysis is to obtain hydrogen and oxygen by inputting water and electricity. The emissions produced at this time are hydrogen and oxygen, of which hydrogen is of high purity (99%↑). Therefore, water electrolysis can be said to be the optimal method to reduce the generation of carbon compounds required by the current hydrogen economy.

Meanwhile, the water electrolysis method, which is an eco-friendly hydrogen production method, requires the use of an expensive platinum (Pt) catalyst, making it difficult to secure price competitiveness. Therefore, polymer electrolyte membrane-based water electrolysis devices can increase the activity of hydrogen generation reactions even with transition metal-based catalysts instead of platinum-based catalysts, and research for commercialization is currently being actively conducted.

In addition, internal combustion engine vehicles that run on existing fossil fuels emit a lot of carbon dioxide into the atmosphere, which can cause major environmental pollution problems. Accordingly, research on vehicles that use eco-friendly energy sources, especially electricity or hydrogen, is being conducted. It is actively. Additionally, as the fuel efficiency of internal combustion engine vehicles improves, carbon dioxide emissions decrease, so research on methods to improve fuel efficiency of internal combustion engine vehicles is also active.

Previously, the main components of fossil fuels consisted of carbon (C) and hydrogen (H), so in the case of internal combustion engine vehicles, fossil fuels explode and a large amount of carbon dioxide is emitted, which has the problem of accelerating global warming. As fuel efficiency improves, the use of fossil fuels decreases and carbon dioxide emissions decrease, so there is a need for a method to improve the fuel efficiency of internal combustion engine vehicles. In particular, there is a need for a method to improve the fuel efficiency of internal combustion engine vehicles by utilizing eco-friendly energy, and this specification uses a PEM water electrolysis stack device to obtain hydrogen in an environmentally friendly manner and mixes this hydrogen with fossil fuel to produce hydrogen. By increasing the content, the explosive power of the internal combustion engine is increased, thereby improving fuel efficiency and reducing the amount of carbon dioxide produced.

Among existing eco-friendly energy vehicles, vehicles utilizing hydrogen energy use an external hydrogen charging method that injects hydrogen produced outside the vehicle into the vehicle. The hydrogen uses reformed hydrogen, so carbon dioxide is produced during hydrogen production. occurs, and it takes time to supply fuel to the vehicle. Therefore, by omitting the process of charging hydrogen externally, it is possible to secure the time required to supply fuel to the vehicle, and it is necessary to inject hydrogen obtained externally in an environmentally friendly manner without generating carbon dioxide by using a PEM water electrolysis stack device. There is a need for a method that can produce hydrogen inside the vehicle and supply it to the vehicle, and in this specification, by installing a PEM water electrolysis stack device in the vehicle, the external hydrogen charging process is omitted and hydrogen is produced without generating carbon dioxide, thereby supplying the vehicle to the vehicle. We are suggesting a way to supply it.

In addition, in general, in the case of PEM water electrolysis stacks, expensive platinum catalysts are essential, but there is a problem in securing price competitiveness, so a method of using PEM water electrolysis stacks using catalysts other than platinum is required. It is becoming. This specification presents a way to secure price competitiveness by presenting a PEM water electrolysis stack using a transition metal-based catalyst (e.g., iridium oxide, Ir) rather than a platinum catalyst.

Various embodiments disclosed in this document can provide methods and devices for solving the above-described problems.

According to one embodiment, a fuel efficiency improvement system for an internal combustion engine vehicle using a PEM water electrolysis stack includes a water tank that stores water for generating hydrogen through electrolysis, and the water provided from the water tank is used as electricity. An electrolysis cell that generates hydrogen by decomposition, a water separator that removes moisture contained in the hydrogen provided from the electrolysis cell and provides the removed moisture to the water tank, the water tank, and An electrically connected control unit, a hydrogen fuel cell that generates electricity by receiving hydrogen from which the moisture has been removed from the water separator, and an internal combustion engine that is driven using the electricity provided by the hydrogen fuel cell to improve fuel efficiency. May include engines.

According to one embodiment, the electrolysis cell is manufactured to use the PEM water electrolysis stack method, and can generate hydrogen by electrolyzing the water provided from the water tank using a transition metal catalyst.

According to one embodiment, the transition metal catalyst may include iridium oxide (Ir) only in the anode material.

According to one embodiment, the PEM water electrolysis stack method of the electrolysis cell can produce the hydrogen at 300 to 600 mL/min.

According to one embodiment, the electricity can be generated with the hydrogen fuel cell operating power of 60W/hr.

According to one embodiment, the water separator includes a moisture adsorbent that removes moisture contained in the hydrogen, and the moisture adsorbent may have a porous structure.

According to one embodiment, a fuel efficiency improvement system for an internal combustion engine vehicle using a PEM water electrolysis stack includes a water tank that stores water for generating hydrogen through electrolysis, and the water provided from the water tank is the first A water separator designed to flow in through an inlet, move through a fluid moving unit, and discharge through a first outlet, and an electrolysis cell that generates hydrogen by electrolyzing the water provided from the water separator. ), the water separator receives the generated hydrogen from the electrolysis cell, removes moisture contained in the hydrogen, provides the removed moisture to the water tank, and a control unit electrically connected to the water tank, It may include a hydrogen fuel cell that generates electricity by receiving hydrogen from which the moisture has been removed from the water separator, and an internal combustion engine that is driven using the electricity provided by the hydrogen fuel cell to improve fuel efficiency.

According to one embodiment, the first inlet is provided on the upper side of the water separator, the first outlet is provided on the lower side of the water separator, a fluid moving part is provided inside the water separator, and the inside of the water separator is provided. A moisture adsorbent may be included in an area excluding the fluid moving part.

Using a PEM water electrolysis stack device, hydrogen can be conveniently generated and mixed with fossil fuels to improve fuel efficiency. The amount of carbon dioxide produced can be reduced according to improved fuel efficiency, thereby ensuring eco-friendliness.

According to an embodiment of the present disclosure, by miniaturizing the PEM water electrolysis stack device and installing it in an internal combustion engine vehicle, the external hydrogen charging process can be omitted, and hydrogen can be continuously supplied to the vehicle without generating carbon dioxide.

According to an embodiment of the present disclosure, price competitiveness can be secured by operating the PEM water electrolysis stack device using an inexpensive transition metal-based catalyst (e.g., iridium oxide, Ir) rather than an expensive platinum catalyst.

In addition, various effects that can be directly or indirectly realized through the present disclosure may be provided.

1 shows a configuration diagram of the interior of a first internal combustion engine vehicle equipped with a first type of PEM water electrolysis stack device according to an embodiment.
FIG. 2 is a diagram illustrating in detail the movement of electric signals and fluid between the components of FIG. 1 according to an embodiment.
Figure 3 shows a configuration diagram inside a second internal combustion engine vehicle equipped with a second type of PEM water electrolysis stack device according to an embodiment.
In relation to the description of the drawings, identical or similar reference numerals may be used for identical or similar components.

Hereinafter, various embodiments of the present invention are described with reference to the attached drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include various modifications, equivalents, and/or alternatives to the embodiments of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary. In addition, terms such as "... unit", "... unit", and "module" used in the specification refer to a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software. there is.

In this document, expressions such as “have,” “may have,” “includes,” or “may include” refer to the relevant features (e.g., numerical values, functions, operations, or components such as parts). Indicates presence and does not exclude the presence of additional features.

In this document, expressions such as “A or B, “at least one of A or/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. For example, “A or B”, “at least one of A and B”, or “at least one of A or B” (1) includes at least one A, (2) includes at least one B, or (3) it may refer to all cases including both at least one A and at least one B.

As used herein, expressions such as “first,” “second,” “first,” or “second” may describe various elements in any order and/or importance, and may refer to one element as another. It is only used to distinguish from components and does not limit the components. For example, a first user device and a second user device may represent different user devices regardless of order or importance. For example, a first component may be renamed a second component without departing from the scope of rights described in this document, and similarly, the second component may also be renamed to the first component.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected," but also the case where it is "electrically connected" with another element in between. . In addition, when a part is said to "include" a certain component, this does not mean excluding other components unless specifically stated to the contrary, but may further include other components, and one or more other features. It should be understood that it does not exclude in advance the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

FIG. 1 shows a configuration diagram of the inside of a first internal combustion engine vehicle 10 equipped with a first type of PEM water electrolysis stack device 100 according to an embodiment.

Referring to FIG. 1, a first internal combustion engine vehicle 10 can drive an internal combustion engine 105 while being equipped with a first type of PEM water electrolysis stack device 100. As a result, the fuel efficiency of the internal combustion engine 105 can be improved compared to the case where the internal combustion engine 105 is driven without the PEM water electrolysis stack device 100 of the first type, and the improved fuel efficiency can improve the carbon dioxide of the vehicle. Emissions can be significantly reduced.

For example, in the case of an internal combustion engine vehicle using gasoline, when the first type of PEM water electrolysis stack device 100 is installed together to drive the internal combustion engine 105, fuel efficiency will be improved by about 10 to 20%. You can.

For another example, in the case of an internal combustion engine vehicle using diesel fuel, when the first type of PEM water electrolysis stack device 100 is installed together to drive the internal combustion engine 105, fuel efficiency is improved by about 10 to 15%. It can be.

As another example, in the case of an internal combustion engine vehicle using LPG, when the first type of PEM water electrolysis stack device 100 is installed together to drive the internal combustion engine 105, fuel efficiency is reduced by about 10 to 15%. It can be improved.

According to one embodiment, the hydrogen fuel cell system may include a first type PEM water electrolysis stack device 100, which refers to a fuel efficiency improvement device for vehicles, and a fuel cell (not shown), and the hydrogen fuel cell system By introducing it into internal combustion engine vehicles, fuel efficiency can be improved compared to existing ones. The fuel cell may refer to a hydrogen fuel cell, and the hydrogen fuel cell may be a device that generates energy by converting hydrogen into electricity through a chemical reaction. The hydrogen fuel cell is environmentally friendly, operates with high efficiency, and can be used in electric vehicles and various other applications. For example, the hydrogen fuel cell combines hydrogen and oxygen to produce water, so when fuel is consumed, only water is produced as an emission, thereby achieving zero carbon emissions.

According to one embodiment, the hydrogen fuel cell system may refer to a device that supplies power to the first internal combustion engine vehicle 10 and may refer to a power supply device capable of supplying 3 kW of power.

According to one embodiment, the specifications of the vehicle fuel efficiency improvement device, that is, the hydrogen production of the PEM water electrolysis stack device 100, may be 600 mL/min, and the specifications of the fuel cell, that is, the hydrogen fuel cell operation may be 60 W/hr. You can.

According to one embodiment, the first internal combustion engine vehicle 10 may include a first type of PEM water electrolysis stack device 100, an internal combustion engine engine 105, an ODB 106, and a pollution reduction device 107. You can. The first type of PEM water electrolysis stack device 100 includes an electrolysis cell (102), a water tank (103), a water separator (104), and a control box (101). can do. Components inside the first internal combustion engine vehicle 10 may not be limited to those shown in FIG. 1 . For example, the connection relationship between the internal components of the PEM water electrolysis stack device 100 of the first type is not limited to the form shown in FIG. 1, and includes the water tank 103 and the water separator as shown in FIG. 3. The arrangement of (104) and electrolytic cell (102) may be changed.

According to one embodiment, the electrolytic cell 102 is a core component of the PEM water electrolysis stack device 100 and may be a vessel used for electrolysis. The container may contain an electrode and an electrolyte solution.

According to one implementation, water electrolysis stack technology can be divided depending on the type of ions to be moved and the type of electrolyte used. For example, AEC water electrolysis stack technology can use alkaline liquid as an electrolyte and is a technology that moves anions through a separator. PEM water electrolysis stack technology can use a polymer electrolyte as an electrolyte and is a technology that moves positive ions through a separator. AEM water electrolysis stack technology uses an anion exchange membrane as an electrolyte and moves anions through a separator.

According to one embodiment, the water tank 103 can store water, and the stored water can be provided to the electrolytic cell 102 through the control unit 101. The water may be subject to electrolysis to secure hydrogen. The water tank 103 may receive water separated from the water separator 104.

According to one embodiment, the water separator 104 may be a device for separating water (or moisture), which is an impurity, from hydrogen gas and oxygen gas generated after water is electrolyzed in the electrolysis cell 102. The water separator 104 can separate the impurity water (or moisture) and provide it to the water tank 103. The water separator 104 can provide hydrogen gas and oxygen gas from which the impurities have been removed to the internal combustion engine 105.

According to one embodiment, the control unit 101 may include an electrical signal module capable of transmitting, receiving, and processing electrical signals, and a water flow control module capable of controlling the flow of water. The control unit 101 can be electrically connected to the water tank 103 and the OBD 106 through the electric signal module, and can transmit and receive electric signals. The control unit 101 can receive water from the water tank 103 through the water flow control module, and provide the received water to the electrolysis cell 102. The control unit 101 may control water to be transferred from the water tank 103 to the electrolytic cell 102 through the water flow control module.

According to one embodiment, OBD (On-Board Diagnostics, 106) is a diagnostic standard for checking and controlling the electrical/electronic operating status of a vehicle, and can serve as an interface as a trip computer that displays various vehicle information to the driver. You can. The OBD 106 can measure information about the electrical/electronic operating status of the vehicle and provide the measurement results to the driver, allowing the driver to recognize the status of the vehicle.

For example, the OBD 106 can measure the fuel efficiency of a vehicle in real time by checking the electrical/electronic operating status of the vehicle. Based on the measured fuel efficiency of the vehicle, whether or not the PEM water electrolysis stack device 100 is driven can be controlled. For example, when the measured fuel efficiency of the vehicle is below the standard value, the PEM water electrolysis stack device 100 can be driven, and hydrogen can be produced through this. Carbon dioxide may not be generated in the process of producing hydrogen. The produced hydrogen can generate electricity by being injected into the hydrogen fuel cell. For another example, the produced hydrogen may be stored in a hydrogen storage tank, and the hydrogen stored in the tank may be injected into the hydrogen fuel cell to generate electricity when the measured fuel efficiency of the vehicle is below the reference value. there is. By driving the internal combustion engine 105 using the generated electricity together with fossil fuel, the fuel efficiency of the internal combustion engine 105 can be improved.

According to one embodiment, the internal combustion engine 105 may refer to a vehicle engine that operates using fossil fuels (eg, gasoline, diesel, etc.). The internal combustion engine 105 may be connected to the PEM water electrolysis stack device 100. The internal combustion engine 105 is driven by utilizing electricity generated by reacting hydrogen provided from the PEM water electrolysis stack device 100 with oxygen in the air, which is better than when driven using only fossil fuels without using the hydrogen. , fuel efficiency can be improved. Although not shown in FIG. 1, the hydrogen gas provided from the PEM water electrolysis stack device 100 can generate electricity and heat as a result of reacting with oxygen in the air that is separately injected, and the generated electricity can be used in vehicles (especially internal combustion engine engines) By driving (105)), the fuel efficiency of the vehicle can be improved, and carbon dioxide emissions can be reduced through improved fuel efficiency.

According to one embodiment, the internal combustion engine 105 may transmit soot (or exhaust gas) generated while driving the internal combustion engine 105 to the pollution reduction device 107.

According to one embodiment, the pollution reduction device 107 may include a selective catalytic reduction (SCR) facility and a diesel particulate filter (DPF). The selective reduction catalyst facility may be a device that purifies exhaust gas from a diesel engine. The diesel particulate filter is a pollution reduction device for a diesel engine, and may be a device that performs the function of reducing fine dust emissions from vehicle exhaust. The pollution reduction device 107 can process soot (or exhaust gas) provided from the internal combustion engine 105 and then discharge it to the outside of the vehicle. The treatment may mean purifying soot (or exhaust gas).

According to one embodiment, the pollution reduction device 107 may include a DPF operation sensor, and the DPF operation sensor may detect whether the pollution reduction device is operating. The pollution reduction device 107 can perform data communication with the control unit 101 and transmit sensed data detected through the DPF operation sensor to the control unit 101. The control unit 101 can control the fuel reduction device using the sensing data provided from the pollution reduction device 107.

FIG. 2 is a diagram illustrating in detail the movement of electric signals and fluid between the components of FIG. 1 according to an embodiment.

Referring to FIG. 2, a first type of PEM water electrolysis stack device 100 is provided inside a first internal combustion engine vehicle 10, and hydrogen generated through the first type of PEM water electrolysis stack device 100 Electricity is generated using gas, and the internal combustion engine 105 can be driven using the generated electricity. The generated hydrogen gas can be input into a hydrogen fuel cell (not shown), thereby generating electricity and heat.

According to one embodiment, the first internal combustion engine vehicle 10 includes a control box (or control unit) 101, an electrolytic cell 102, a water tank 103, a water separator 104, an internal combustion engine 105, It may include ODB (106), DPF/SCR (107), and air inlet (201). Components of the first internal combustion engine vehicle 10 may not be limited to the components shown in FIG. 2 . The air inlet 201 may be located on the gas movement path from the water exchanger 104 to the internal combustion engine 105.

According to one embodiment, the water tank 103 may store water, which is a material for generating hydrogen through electrolysis. The water tank 103 can deliver the water to the control unit 101. The control unit 101 may include a water flow control module, and may provide water stored in the water tank 103 to the electrolysis cell 102 through the water flow control module. The electrolytic cell 102 can generate oxygen gas and hydrogen gas by electrolyzing the provided water. The electrolytic cell 102 generates the oxygen gas and the hydrogen gas and provides the remaining water back to the water tank 103. The electrolytic cell 102 can provide the oxygen gas and the hydrogen gas to the water exchanger 104. The water exchanger 104 may collect moisture to remove impurities (eg, moisture) contained in the oxygen gas and hydrogen gas provided from the inhibition cell 102. The water exchanger 104 can condense the collected moisture and provide it to the water tank 103.

According to one embodiment, the oxygen gas and hydrogen gas remaining after removing impurities in the water exchanger 104 may be provided to the internal combustion engine 105. In the process of providing the oxygen gas and the hydrogen gas to the internal combustion engine 105, air may be injected through the air inlet 201, and the injected air, oxygen gas, and hydrogen gas may be used as hydrogen fuel. It can be delivered to a battery (not shown), and the hydrogen fuel cell can generate electricity by conducting a chemical reaction using the air, the oxygen gas, and the hydrogen gas. The generated electricity can be used to support the driving of the internal combustion engine 105, and through this, the fuel efficiency of the internal combustion engine 105 can be improved.

According to one embodiment, the control unit 101 may include an electrical signal module capable of transmitting and receiving electrical signals, and may be electrically connected to the water tank 103. The electrical signal module of the control unit 101 can electrically control the supply of water from the water tank 103 to the electrolytic cell 102. The control unit 101 may be electrically connected to the OBD 106 and may receive power from an external source. The OBD (106) may be electrically connected to a connection member between the internal combustion engine 105 and the DPF/SCR (107).

FIG. 3 shows a configuration diagram of the inside of a second internal combustion engine vehicle 30 equipped with a second type of PEM water electrolysis stack device 300 according to an embodiment.

Referring to FIG. 3, the second internal combustion engine vehicle 30 can drive the internal combustion engine 105 while being equipped with a second type of PEM water electrolysis stack device 300. As a result, the fuel efficiency of the internal combustion engine 105 can be improved compared to the case where the internal combustion engine 105 is driven without the second type of PEM water electrolysis stack device 300, and the improved fuel efficiency can improve the carbon dioxide of the vehicle. Emissions can be significantly reduced.

At least some of the contents of the components of FIG. 1 can be equally applied to the components of FIG. 3, and when compared with FIG. 1, among the components of FIG. 3, the water tank 103, the water separator 304, and only the arrangement relationship between the electrolytic cells 102 may be different. For example, in the case of FIG. 1, water in the water tank 103 may be supplied from the water tank 103 to the electrolytic cell 102 through the control unit 101, but in the case of FIG. 3, the water in the water tank 103 may be supplied to the electrolytic cell 102 through the control unit 101. Accordingly, it may be provided from the water tank 103 to the electrolytic cell 102 through the water separator 304.

According to one embodiment, the hydrogen fuel cell system may include a second type of PEM water electrolysis stack device 300, which refers to a fuel efficiency improvement device for vehicles, and a fuel cell (not shown), , By introducing the hydrogen fuel cell system into internal combustion engine vehicles, fuel efficiency can be improved compared to existing vehicles. The fuel cell may refer to a hydrogen fuel cell, and the hydrogen fuel cell may be a device that generates energy by converting hydrogen into electricity through a chemical reaction. The hydrogen fuel cell is environmentally friendly, operates with high efficiency, and can be used in electric vehicles and various other applications. For example, the hydrogen fuel cell combines hydrogen and oxygen to produce water, so when fuel is consumed, only water is produced as an emission, thereby achieving zero carbon emissions.

According to one embodiment, the hydrogen fuel cell system may refer to a device that supplies power to the second internal combustion engine vehicle 30 and may refer to a power supply device capable of supplying 3 kW of power.

According to one embodiment, the specifications of the vehicle fuel efficiency improvement device, that is, the hydrogen production of the PEM water electrolysis stack device 100, may be 600 mL/min, and the specifications of the fuel cell, that is, the hydrogen fuel cell operating power, may be 60 W/hr. It can be.

According to one embodiment, the second internal combustion engine vehicle 30 may include a second type of PEM water electrolysis stack device 300, an internal combustion engine engine 105, an ODB 106, and a pollution reduction device 107. You can. The second type of PEM water electrolysis stack device 300 includes an electrolysis cell (102), a water tank (103), a water separator (304), and a control box (101). can do. Components inside the second internal combustion engine vehicle 30 may not be limited to those shown in FIG. 3 . For example, the connection relationship between internal components of the PEM water electrolysis stack device 300 of the second type may not be limited to the form shown in FIG. 3.

According to one embodiment, the water separator 304 of FIG. 3 may function as a heat exchanger, and the water separator 304 may be manufactured to perform the heat exchanger function. The water separator 304 may have an inlet through which water flows from the water tank 103 and an outlet through which the water is discharged. The water separator 304 may be provided with a fluid moving part therein so that water flowing in through the inlet is discharged through the outlet. For example, a first inlet may be located on a first side (e.g., top side) of water separator 304 and a first outlet may be located on a second side (e.g., bottom side) of water separator 304. there is. The water can be used to conduct electrolysis of water in the electrolytic cell 102. That is, the water discharged through the outlet of the water separator 304 may be provided to the electrolytic cell 102, and the provided water may be electrolyzed in the electrolytic cell 102, thereby generating hydrogen.

According to one embodiment, the water separator 304 may include a second inlet through which hydrogen generated in the electrolytic cell 102 flows and a second outlet through which the introduced hydrogen is discharged. For example, a second inlet may be located on a third side (e.g., right side) of water separator 304 and a second outlet may be located on a fourth side (e.g., left side) of water separator 304. You can.

According to one embodiment, the fluid moving unit may be disposed inside the water separator 304, and a plurality of moisture adsorbents may be disposed in an area in the interior where the fluid moving unit is not disposed. Hydrogen flowing into the second inlet of the water separator 304 may come into contact with the moisture adsorbent while moving inside the water separator 304 to be discharged through the second outlet, and thus remain in the hydrogen gas. Moisture may be absorbed. Through this, the hydrogen generated in the electrolytic cell 102 can be discharged to the second outlet with the moisture removed through the moisture adsorbent located inside the water separator 304.

According to one embodiment, the water flowing in through the first inlet may be heated through the heat of hydrogen flowing in through the second inlet and discharged through the second outlet, and the heated water may be heated through the heat of hydrogen flowing in through the second inlet and discharged through the second outlet. 2 Can be discharged through outlet. The heated water can be provided to the electrolytic cell 102 through the second outlet, and the efficiency of electrolysis in the electrolytic cell 102 can be increased by using the heated water.

According to one embodiment, hydrogen after water is electrolyzed in the electrolytic cell 102 flows in through the second inlet and moves toward the second outlet, and flows in through the first inlet to move the fluid moving unit. The temperature can be lowered through water, and the moisture absorption efficiency by the moisture adsorbent can be improved by lowering the temperature of hydrogen.

According to one embodiment, the body of the water separator 304 may be made of an insulating material or may be manufactured with an insulating material attached, and the fluid moving part may be made of a copper pipe to have high thermal conductivity.

According to one embodiment, the moisture adsorbent may have a porous structure, and moisture is adsorbed to the porous structure to further absorb moisture remaining in the hydrogen generated in the electrolytic cell 102.

According to one embodiment, the pollution reduction device 107 may include a DPF operation sensor, and the DPF operation sensor may detect whether the pollution reduction device is operating. The pollution reduction device 107 can perform data communication with the control unit 101 and transmit sensed data detected through the DPF operation sensor to the control unit 101. The control unit 101 can control the fuel reduction device using the sensing data provided from the pollution reduction device 107.

According to one embodiment, a fuel efficiency improvement system for an internal combustion engine vehicle using a PEM water electrolysis stack includes a water tank that stores water for generating hydrogen through electrolysis, and the water provided from the water tank is used as electricity. An electrolysis cell that generates hydrogen by decomposition, a water separator that removes moisture contained in the hydrogen provided from the electrolysis cell and provides the removed moisture to the water tank, the water tank, and An electrically connected control unit, a hydrogen fuel cell that generates electricity by receiving hydrogen from which the moisture has been removed from the water separator, and an internal combustion engine that is driven using the electricity provided by the hydrogen fuel cell to improve fuel efficiency. May include engines.

According to one embodiment, the electrolysis cell is manufactured to use the PEM water electrolysis stack method, and can generate hydrogen by electrolyzing the water provided from the water tank using a transition metal catalyst.

According to one embodiment, the transition metal catalyst may include iridium oxide (Ir) only in the anode material.

According to one embodiment, the PEM water electrolysis stack method of the electrolysis cell can produce the hydrogen at 300 to 600 mL/min.

According to one embodiment, the hydrogen fuel cell can generate the electricity with an operating power of 60W/hr.

According to one embodiment, the water separator includes a moisture adsorbent that removes moisture contained in the hydrogen, and the moisture adsorbent may have a porous structure.

According to one embodiment, a fuel efficiency improvement system for an internal combustion engine vehicle using a PEM water electrolysis stack includes a water tank that stores water for generating hydrogen through electrolysis, and the water provided from the water tank is the first A water separator designed to flow in through an inlet, move through a fluid moving unit, and discharge through a first outlet, and an electrolysis cell that generates hydrogen by electrolyzing the water provided from the water separator. ), the water separator receives the generated hydrogen from the electrolysis cell, removes moisture contained in the hydrogen, provides the removed moisture to the water tank, and a control unit electrically connected to the water tank, It may include a hydrogen fuel cell that generates electricity by receiving hydrogen from which the moisture has been removed from the water separator, and an internal combustion engine that is driven using the electricity provided by the hydrogen fuel cell to improve fuel efficiency.

According to one embodiment, the first inlet is provided on the upper side of the water separator, the first outlet is provided on the lower side of the water separator, a fluid moving part is provided inside the water separator, and the inside of the water separator is provided. A moisture adsorbent may be included in an area excluding the fluid moving part.

Claims (8)

In a fuel efficiency improvement system for internal combustion engine vehicles using a PEM water electrolysis stack,
A water tank to store water for generating hydrogen through electrolysis; (103)
An electrolysis cell that generates hydrogen by electrolyzing the water provided from the water tank; (102)
A water separator that removes moisture contained in hydrogen provided from the electrolytic cell and provides the removed moisture to the water tank; (104)
A control unit electrically connected to the water tank; (101)
A hydrogen fuel cell that generates electricity by receiving hydrogen from which the moisture has been removed from the water separator; and
An internal combustion engine driven using the electricity provided from the hydrogen fuel cell to improve fuel efficiency; includes (105),
The water separator:
A first inlet is provided on the upper surface of the water separator,
A first outlet is provided on the lower side of the water separator,
The first inlet and the first outlet are connected through a fluid moving part made of copper pipe,
A second inlet is provided on the right side of the water separator,
A second outlet is provided on the left side of the water separator,
A moisture adsorbent is provided outside the fluid moving part of the inner area of the water separator,
The water provided from the water tank flows into the first inlet, moves along the fluid moving part, and is discharged into the first outlet,
The hydrogen provided from the electrolytic cell flows into the second inlet and moves along the inside of the water separator, so that the moisture contained in the hydrogen is absorbed by the moisture adsorbent,
the temperature of the hydrogen at the second inlet is higher than the temperature of the hydrogen at the second outlet,
the temperature of the water at the first inlet is lower than the temperature of the water at the first outlet,
The electrolytic cell is manufactured to use the PEM water electrolysis stack method, and generates hydrogen by electrolyzing the water provided from the water tank using a transition metal catalyst,
The transition metal catalyst is a system wherein only the anode material includes iridium oxide ((Ir).
delete delete In claim 1,
The PEM water electrolysis stack method of the electrolytic cell produces the hydrogen at 300 to 600 mL/min.
In claim 1,
A system that generates the electricity with the hydrogen fuel cell operating power of 60W/hr.
In claim 1,
The water separator includes a moisture adsorbent that removes moisture contained in the hydrogen, and the moisture adsorbent has a porous structure.
delete delete