Mobility and method for controlling operation thereof

Patent metadata

Field	Value
Publication number	US-12331887-B2
Application number	US-202318357754-A
Country	US
Kind code	B2
Filing date	Jul 24, 2023
Priority date	Dec 15, 2022
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

A mobility includes a storage vessel, a power train configured to generate power using liquid hydrogen stored in the storage vessel, and a control device configured to downwardly adjust a target operating pressure of the storage vessel at a time of entering a refueling preparation mode, compare a supply pressure of the liquid hydrogen supplied to the power train with a target hydrogen supply pressure according to the target operating pressure, and limit the power of the power train in response to the supply pressure of the liquid hydrogen being less than the target hydrogen supply pressure.

First claim

What is claimed is:

1. A mobility comprising:
a storage vessel;
a power train configured to generate power using liquid hydrogen stored in the storage vessel; and
a control device configured to:
downwardly adjust a target operating pressure of the storage vessel at a time of entering a refueling preparation mode;
compare a supply pressure of the liquid hydrogen supplied to the power train with a target hydrogen supply pressure according to the target operating pressure; and
limit the power of the power train in response to the supply pressure of the liquid hydrogen being less than the target hydrogen supply pressure.

2. The mobility of claim 1 , wherein the control device is configured to enter the refueling preparation mode in response to a destination of the mobility being set to a hydrogen refueling station or a switch to which a function of enabling and disabling the refueling preparation mode is allocated being turned on.

3. The mobility of claim 1 , wherein the control device is configured to enter the refueling preparation mode in response to an intention of a user to agree to enter the refueling preparation mode being identified.

4. The mobility of claim 1 , wherein the control device is configured to limit a maximum power of the power train based on a mapping table in which a power limit target value of the power train according to the supply pressure of the liquid hydrogen is defined.

5. The mobility of claim 1 , wherein the control device is configured to exit the refueling preparation mode in response to a state of charge (SOC) of the storage vessel being greater than or equal to a predetermined reference value.

6. A mobility comprising:
a storage vessel;
a power train configured to generate power using liquid hydrogen stored in the storage vessel;
an auxiliary power train configured to assist the power train to supply the power; and
a control device configured to:
downwardly adjust a target operating pressure of the storage vessel at a time of entering a refueling preparation mode;
determine a target hydrogen supply pressure according to the target operating pressure; and
limit the power of the power train in response to a supply pressure of the liquid hydrogen supplied to the power train being less than the target hydrogen supply pressure and a state of charge (SOC) of the auxiliary power train being higher than an operating lower limit.

7. The mobility of claim 6 , wherein the control device is configured to enter the refueling preparation mode in response to a destination of the mobility being set to a hydrogen refueling station or a switch to which a function of enabling and disabling the refueling preparation mode is allocated being turned on.

8. The mobility of claim 6 , wherein the control device is configured to enter the refueling preparation mode in response to an intention of a user to agree to enter the refueling preparation mode being identified.

9. The mobility of claim 6 , wherein the control device is configured to limit a maximum power of the power train based on a mapping table in which a power limit target value of the power train according to the supply pressure of the liquid hydrogen is defined.

10. The mobility of claim 6 , wherein the control device is configured to exit the refueling preparation mode in response to the SOC of the storage vessel being greater than or equal to a predetermined reference value.

11. The mobility of claim 10 , wherein the control device is configured to exit the refueling preparation mode in response to an intention of a user to agree to exit the refueling preparation mode being identified.

12. The mobility of claim 6 , wherein the control device is configured to output information indicating that the power of the power train is limited using a user interface device.

13. The mobility of claim 6 , wherein the auxiliary power train comprises a battery or a supercapacitor.

14. A method for controlling an operation of a mobility, the method comprising:
downwardly adjusting a target operating pressure of a storage vessel in the mobility at a time of entering a refueling preparation mode;
comparing a supply pressure of hydrogen supplied to a power train in the mobility with a target hydrogen supply pressure according to the target operating pressure; and
limiting power of the power train in response to the supply pressure of the hydrogen being less than the target hydrogen supply pressure.

15. The method of claim 14 , further comprising entering the refueling preparation mode in response to a destination of the mobility being set to a hydrogen refueling station or a switch to which a function of enabling and disabling the refueling preparation mode is allocated being turned on.

16. The method of claim 14 , further comprising entering the refueling preparation mode in response to an intention of a user to agree to enter the refueling preparation mode being identified.

17. The method of claim 14 , wherein limiting the power of the power train comprises limiting a maximum power of the power train based on a mapping table in which a power limit target value of the power train according to the supply pressure of the hydrogen is defined.

18. The method of claim 14 , wherein limiting the power of the power train comprises:
identifying whether a state of charge (SOC) of an auxiliary power train in the mobility is less than or equal to an operating lower limit, wherein the auxiliary power train assists the power train to supply the power;
releasing the refueling preparation mode in response to the SOC of the auxiliary power train being less than or equal to the operating lower limit; and
limiting the power of the power train in response to the SOC of the auxiliary power train being greater than the operating lower limit.

19. The method of claim 14 , further comprising exiting the refueling preparation mode in response to a state of charge (SOC) of the storage vessel being greater than or equal to a predetermined reference value.

20. The method of claim 14 , further comprising exiting the refueling preparation mode in response to an intention of a user to agree to exit the refueling preparation mode being identified.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Jung Se Kwon

Classifications

• H01M8/04201

  Reactant storage and supply, e.g. means for feeding, pipes · CPC title

• B60L2240/40

  Drive Train control parameters · CPC title

• F17C2260/02

  Improving properties related to fluid or fluid transfer · CPC title

• F17C2270/0184

  Fuel cells · CPC title

• F17C2265/065

  for refuelling vehicle fuel tanks · CPC title