# US 11,440,437 B2 · Driving control system and control method of fuel cell vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,437 B2 - Document ID: US11440437B2 - Status: Granted - Kind: B2 - Application number: 16/892,562 - Filed: 2020-06-04 - Published: 2021-05-20 - Granted: 2022-09-13 - Earliest claimed: 2019-11-15 - Assignees: Hyundai Motor Company; Kia Motors Corporation - Applicants: Hyundai Motor Company; Kia Motors Corporation - Inventors: Jae Kwon Jung; Dong Hun Lee - Web page: https://patentgrep.com/patent/US11440437B2 ## CPC - B60L 1/003: {to auxiliary motors, e.g. for pumps, compressors} - B60L 58/33: by cooling - B60L 1/00: Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00) - B60L 3/00: Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption (methods or circuit arrangements for monitoring or controlling batteries or fuel cells B60L58/00) - B60L 50/71: Arrangement of fuel cells within vehicles specially adapted for electric vehicles - B60L 58/31: for starting of fuel cells - B60L 58/34: by heating - G01S 19/42: Determining position - H01M 8/04201: {Reactant storage and supply, e.g. means for feeding, pipes} - H01M 8/0432: Temperature; Ambient temperature - H01M 8/04619: {of fuel cell stacks} - H01M 8/04701: Temperature - H01M 8/04753: {of fuel cell reactants} - H01M 8/04768: {of the coolant} - H01M 2250/20: Fuel cells in motive systems, e.g. vehicle, ship, plane - Y02E 60/50: Fuel cells - Y02T 90/40: Application of hydrogen technology to transportation, e.g. using fuel cells - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A driving control system of a fuel cell vehicle includes a fuel cell configured to receive hydrogen and air and generate power by a reaction between hydrogen and oxygen, a driving determiner configured to determine a driving state of a vehicle equipped with the fuel cell, a power calculator configured to calculate required power required to be supplied from the fuel cell, and a supply controller configured to control supply of air supplied to the fuel cell based on the driving state determined by the driving determiner and the required power calculated by the power calculator. ## Claims ### Claim 1 A driving control system of a fuel cell vehicle, the driving control system comprising: a fuel cell configured to receive each of hydrogen and air and generate power therein by a reaction between hydrogen and oxygen; a driving determiner configured to determine a driving state of a vehicle equipped with the fuel cell; a power calculator configured to calculate required power required to be supplied from the fuel cell; and a supply controller configured to control supply of air supplied to the fuel cell based on the driving state determined by the driving determiner and the required power calculated by the power calculator wherein the driving determiner determines whether the vehicle is in a driving state or a stopped state based on vehicle speed information or gear shift stage information of the fuel cell vehicle; and wherein the power calculator calculates power consumed by accessories when the driving determiner determines that the vehicle is stopped. ### Claim 2 (depends on 1) The driving control system of claim 1, wherein the driving determiner determines that the vehicle is stopped when the vehicle arrives at a destination based on navigation information. ### Claim 3 (depends on 1) The driving control system of claim 1, wherein the supply controller controls supply of air at a predetermined ratio of required amount of air including a required amount of oxygen required for generation of the required power in the fuel cell. ### Claim 4 (depends on 3) The driving control system of claim 3, wherein when the driving determiner determines that the vehicle is stopped, the predetermined ratio is determined to be smaller than when the vehicle is determined to be driving. ### Claim 5 (depends on 1) The driving control system of claim 1, wherein the supply controller controls the supply of air such that an air supply amount against the required power when the driving determiner determines that the vehicle is stopped is reduced to be smaller than an air supply amount against the required power in a state where the vehicle is driving. ### Claim 6 (depends on 1) The driving control system of claim 1, wherein the supply controller controls the supply of air by adjusting a rotation speed of a compressor positioned at an air supply line supplying air to the fuel cell or an opening of a pressure adjustment valve positioned at an air discharge line discharging air from the fuel cell. ### Claim 7 (depends on 1) The driving control system of claim 1, further comprising: a temperature sensor configured to measure an ambient temperature, wherein the supply controller is configured to control the supply of air such that an air supply amount against the required power is reduced when the ambient temperature measured by the temperature sensor is equal to or lower than a predetermined temperature. ### Claim 8 (depends on 1) The driving control system of claim 1, wherein the fuel cell includes a plurality of stacks in which a plurality of unit cells are stacked, and the supply controller controls to supply air only to some of the plurality of stacks when the driving determiner determines that the vehicle is stopped. ### Claim 9 (depends on 1) The driving control system of claim 1, further comprising: a cooling controller configured to control cooling of the fuel cell based on the driving state determined by the driving determiner. ### Claim 10 (depends on 9) The driving control system of claim 9, wherein the cooling controller increases a target temperature for controlling the cooling of the fuel cell when the driving determiner determines that the vehicle is stopped. ### Claim 11 (depends on 10) The driving control system of claim 10, wherein the cooling controller sets the target temperature such that air humidity in the fuel cell is maintained within a predetermined humidity range. ### Claim 12 (depends on 9) The driving control system of claim 9, wherein the cooling controller controls a revolution per minute (RPM) of a cooling pump configured to circulate a coolant calculated to the fuel cell or an RPM of a cooling fan configured to allow ambient air to flow to a radiator configured to cool a coolant and ambient air. ### Claim 13 A driving control method of a fuel cell vehicle, the driving control method comprising: determining a driving state of a vehicle equipped with a fuel cell; calculating required power required to be supplied from the fuel cell; and controlling supply of air supplied to the fuel cell based on the determined driving state and the calculated required power; wherein the driving determiner determines whether the vehicle is in a driving state or a stopped state based on vehicle speed information or gear shift stage information of the fuel cell vehicle; and wherein the power calculator calculates power consumed by accessories when the driving determiner determines that the vehicle is stopped. ### Claim 14 (depends on 13) The driving control method of claim 13, wherein the controlling of the supply of air includes controlling the supply of air such that an air supply amount against the required power when it is determined that the vehicle is stopped is reduced to be smaller than an air supply amount against the required power in a state where the vehicle is driving. ### Claim 15 (depends on 13) The driving control method of claim 13, further comprising: measuring an ambient temperature before the controlling of the supply of air, wherein the controlling of the supply of air includes controlling the supply of air such that an air supply amount against the required power is reduced when the measured ambient temperature is equal to or lower than a predetermined temperature. ### Claim 16 (depends on 13) The driving control method of claim 13, further comprising: controlling cooling of the fuel cell based on the determined driving state, after the controlling of the supply of air, wherein the controlling of the cooling of the fuel cell includes increasing a target temperature for controlling cooling of the fuel cell when it is determined that the vehicle is stopped.