公开(公告)号：US20230155148A1

公开(公告)日：2023-05-18

申请号：US17983020

申请日：2022-11-08

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong JANG ,  Dongkeun YANG ,  Hyoungsuk WOO ,  Jihoon JUN

IPC: H01M8/04746 ,  H01M8/0612 ,  H01M8/04029 ,  H01M8/04007 ,  H01M8/0432

CPC classification number: H01M8/04768 ,  H01M8/0618 ,  H01M8/04029 ,  H01M8/04067 ,  H01M8/04358

Abstract: A fuel cell system may include: a stack for generating power through an electrochemical reaction of reforming gas and air; a fuel processing apparatus for generating the reforming gas supplied to the stack; a water supply tank for storing the water; a heat recovery tank for storing hot water; a first heat exchanger disposed in the fuel processing apparatus, and exchanging heat between cooling water and exhaust gas discharged from the fuel processing apparatus; and a heat supply valve for supplying the cooling water to the water supply tank or the heat recovery tank so as to heat the water stored in the water supply tank or the hot water stored in the heat recovery tank.

公开(公告)号：US20170346115A1

公开(公告)日：2017-11-30

申请号：US15607131

申请日：2017-05-26

Applicant: LG ELECTRONICS INC.

Inventor： Choonjae RYU ,  Dongkeun YANG ,  Hyoungsuk WOO

IPC: H01M8/04746 ,  H01M8/04186 ,  H01M8/04082

Abstract: A fuel cell has a stack that includes a fuel electrode and air electrode on opposite sides of an electrolyte membrane. The fuel electrode includes first and second fuel ports communicative via a fuel flow path, and the air electrode includes first and second air ports communicative via an air flow path. The fuel cell also includes first and second fuel feeders communicative with the first and second fuel ports, and first and second air feeders communicative with the first and second air ports. The fuel cell also includes a fuel switching unit between the first and second fuel feeders that switches a fuel supply direction between the first and second fuel feeders. The fuel cell further includes an air switching unit between the first and second air feeders that switches an air supply direction between the first and second air feeders.

公开(公告)号：US20210057773A1

公开(公告)日：2021-02-25

申请号：US16999503

申请日：2020-08-21

Applicant: LG Electronics Inc.

Inventor： Hyoungsuk WOO ,  Dongkeun YANG ,  Jaeyoung WON

IPC: H01M8/2483 ,  H01M8/0267

Abstract: A fuel cell stack includes a first stack including a plurality of first fuel cells stacked on each other, and a second stack including a plurality of second fuel cells stacked on each other and disposed on one side of the first stack. Each of the first stack and the second stack includes a fuel inlet hole, through which fuel to be supplied to anodes of the respective first and second fuel cells is introduced, a fuel discharge hole, through which the fuel passing through the anodes is discharged, an air inlet hole, through which air to be supplied to cathodes of the respective first and second fuel cells is introduced, and an air discharge hole, through which the air passing through the cathodes is discharged. The fuel cell stack divided into the two stacks increases a charging ratio of hydrogen at the anodes of the respective stacks.

公开(公告)号：US20210057768A1

公开(公告)日：2021-02-25

申请号：US16999452

申请日：2020-08-21

Applicant: LG Electronics Inc.

Inventor： Hyoungsuk WOO ,  Dongkeun YANG ,  Woojin CHO

IPC: H01M8/04119 ,  H01M8/0612 ,  H01M8/04492 ,  H01M8/04746

Abstract: A fuel cell exhaust device includes a pipe having one side open and the other side closed, a water tank having one side open and the other side closed, a reformer exhaust pipe communicating with the pipe between one side and the other side of the pipe, a stack exhaust pipe which is spaced apart from the reformer exhaust pipe and communicates with the pipe between one side and the other side of the pipe, a drain pipe positioned adjacent to the reformer exhaust pipe or the stack exhaust pipe and disposed on an outer circumferential surface of the water tank to communicate with the inside of the water tank, and a hole defined on the closed other side of the pipe and spaced apart from the closed other side of the water tank.

公开(公告)号：US20230170500A1

公开(公告)日：2023-06-01

申请号：US18070805

申请日：2022-11-29

Applicant: LG ELECTRONICS INC

Inventor： Heejoong JANG ,  Dongkeun YANG ,  Hyoungsuk WOO ,  Hyeri PARK

IPC: H01M8/04119 ,  H01M8/0438 ,  H01M8/04828

CPC classification number: H01M8/04126 ,  H01M8/0438 ,  H01M8/04843 ,  H01M8/04007

Abstract: A fuel cell apparatus may include a stack, a stack air blower configured to supply external air to the stack, a humidifier configured to extract moisture contained in exhaust air and to supply the extracted moisture to external air supplied to the stack, a first bypass channel configured to allow exhaust air to bypass the humidifier, a first three-way valve controlled to adjust the amount of exhaust air that bypasses the humidifier, and a humidity sensor configured to sense the humidity of external air. The fuel cell apparatus may also include a second bypass channel configured to allow external air to bypass the humidifier, a second three-way valve controlled to adjust the amount of external air that bypasses the humidifier, and a controller configured to control the first three-way valve and the second three-way valve depending on the sensed humidity value of the external air.

公开(公告)号：US20210057769A1

公开(公告)日：2021-02-25

申请号：US16999514

申请日：2020-08-21

Applicant: LG Electronics Inc.

Inventor： Hyoungsuk WOO ,  Dongkeun YANG ,  Hyungsoon KIM

IPC: H01M8/0662 ,  B01D53/04 ,  C10L3/10

Abstract: Disclosed is a desulfurizer of a fuel cell. The desulfurizer includes a pipe extended long and having one side that is open and the other side that is closed; a cap coupled to one side of the pipe and closing the pipe; a plurality of baffles installed in an inner space of the pipe and sequentially partitioning the inner space in a direction crossing a length direction of the pipe; an inflow pipe penetrating through the cap and the plurality of baffles and communicating from the outside of the pipe to the inner space of the pipe; and an outflow pipe installed in the cap and communicating the outside of the pipe and the inner space of the pipe.

公开(公告)号：US20180031282A1

公开(公告)日：2018-02-01

申请号：US15446336

申请日：2017-03-01

Applicant: LG ELECTRONICS INC.

Inventor： Hyoungsuk WOO ,  Dongkeun YANG ,  Byeongsu KIM

IPC: F25B9/00 ,  F25B43/00 ,  F25B41/06

CPC classification number: F25B9/008 ,  F25B1/10 ,  F25B40/00 ,  F25B41/062 ,  F25B43/006 ,  F25B49/02 ,  F25B2309/061 ,  F25B2341/065 ,  F25B2341/0662 ,  F25B2400/23 ,  F25B2600/2509 ,  F25B2600/2513 ,  F25B2700/195 ,  F25B2700/21151 ,  F25B2700/21152 ,  F25B2700/21163 ,  F25B2700/21175 ,  Y02B30/72

Abstract: A supercritical refrigeration cycle apparatus and a method for controlling a supercritical refrigeration cycle apparatus are provided. The supercritical refrigeration cycle apparatus may include a compressor; a gas cooler configured to cool the compressed a refrigerant in a supercritical state; a pressure control electronic expansion valve connected to the gas cooler; a receiver configured to temporarily store the refrigerant; a flow control electronic expansion valve connected to an outlet side of the receiver to control a flow rate of the refrigerant; and a controller configured to control the flow control electronic expansion valve based on a suction superheat degree of refrigerant suctioned into the compressor and a target suction superheat degree, and control the pressure control electronic expansion valve based on a target operation high pressure and a current operation high pressure. In this way, flow control and pressure control of refrigerant may be respectively implemented in a separate manner, thereby enhancing reliability and operation efficiency of the compressor, respectively.

公开(公告)号：US20230178772A1

公开(公告)日：2023-06-08

申请号：US17982985

申请日：2022-11-08

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong JANG ,  Dongkeun YANG ,  Hyoungsuk WOO ,  Jihoon JUN

IPC: H01M8/04746 ,  H01M8/0432 ,  H01M8/04014 ,  H01M8/04029 ,  H01M8/04007 ,  H01M8/04082 ,  H01M8/04225 ,  H01M8/0612 ,  H01M8/2457

CPC classification number: H01M8/04753 ,  H01M8/04358 ,  H01M8/04335 ,  H01M8/04014 ,  H01M8/04029 ,  H01M8/04074 ,  H01M8/04201 ,  H01M8/04225 ,  H01M8/0618 ,  H01M8/2457

Abstract: A fuel cell apparatus may include a stack, a reformer configured to generate reformed gas, a burner, a water supply tank configured to store cooling water, a burner air blower configured to draw in external air and then to blow the air, a vertex tube configured to convert the air into heated air and cooled air, a three-way valve configured to supply the air from the burner air blower selectively to the vertex tube or the burner, a first heat exchanger configured to exchange heat between the air discharged from the vertex tube and the cooling water, a second heat exchanger configured to exchange heat between the air discharged from the vertex tube and the reformed gas, and a four-way valve configured to supply the heated air and the cooled air to the first and second heat exchangers.

公开(公告)号：US20230148377A1

公开(公告)日：2023-05-11

申请号：US17976074

申请日：2022-10-28

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong JANG ,  Hyoungsuk WOO

IPC: H01M8/1233 ,  H01M8/04089 ,  H01M8/2484 ,  H01M8/04701 ,  H01M8/04746

CPC classification number: H01M8/1233 ,  H01M8/04089 ,  H01M8/2484 ,  H01M8/04738 ,  H01M8/04776

Abstract: A fuel cell system may include: a reformer performing a reforming process of producing hydrogen gas from a gasified fuel; a burner supplying heat to the reformer; a stack generating electrical energy by generating an electrochemical reaction using reforming gas and air discharged from the reformer; a first supply pipe supplying external air to the burner; a second supply pipe supplying external air to the stack; a first storage tank storing a liquid fuel; a second storage tank supplying a gasified fuel to the reformer; and a fuel evaporator making a liquid fuel discharged from the first storage tank exchange heat with air flowing through the first supply pipe or air flowing through the second supply pipe, and sending a gasified gaseous fuel to the second storage tank.

公开(公告)号：US20230072408A1

公开(公告)日：2023-03-09

申请号：US17940548

申请日：2022-09-08

Applicant: LG ELECTRONICS INC.

Inventor： Heejoong JANG ,  Hyoungsuk WOO

IPC: H01M8/04014 ,  H01M8/04089 ,  H01M8/04007 ,  H01M8/04119 ,  H01M8/0612 ,  H01M8/04746

Abstract: A fuel cell system includes: a stack generating electric power using reformed gas; a fuel processing device supplying reformed gas; a first gas passage connecting the stack and the fuel processing device, and carrying the reformed gas; a second gas passage connecting the stack and the fuel processing device and carrying an anode off gas (AOG) discharged from the stack; a buffer tank storing the AOG; a first buffer tank passage connecting the buffer tank and the second gas passage; a second buffer tank passage carrying the AOG stored in the buffer tank; a gas mixer connected to the second buffer tank passage and supplying the AOG stored in the buffer tank to the stack; and a controller controlling the gas mixer to supply the anode off gas stored in the buffer tank to the stack so as to preheat the stack or remove air in the stack.