Hydrogen consumption measuring method for fuel cell system

Patent metadata

Field	Value
Publication number	US-2017301931-A1
Application number	US-201615277612-A
Country	US
Kind code	A1
Filing date	Sep 27, 2016
Priority date	Apr 19, 2016
Publication date	Oct 19, 2017
Grant date	—

Abstract

A hydrogen consumption measuring method for a fuel cell system includes steps of: calculating an amount of hydrogen consumed for a representative section from a first pressure at a time when hydrogen is supplied into an anode and a second pressure at a time when the hydrogen is no longer supplied to the anode; and calculating a total amount of hydrogen consumed by accumulating amounts of hydrogen consumed from a plurality of sections.

First claim

What is claimed is:

1 . A hydrogen consumption measuring method for a fuel cell system, comprising steps of:
calculating an amount of hydrogen consumed for a representative section from a first pressure at a time when hydrogen is supplied into an anode and a second pressure at a time when the hydrogen is no longer supplied to the anode; and calculating a total amount of hydrogen consumed by accumulating amounts of hydrogen consumed from a plurality of sections.

2 . The method of claim 1 , wherein the amount of hydrogen consumed for the representative section is calculated according to the equation:
the amount of hydrogen consumed=( P Bn /T Bn −P An /T An )* V*C, where P An is an internal pressure of the anode at the time when the hydrogen is supplied to the anode; P Bn is an internal pressure of the anode at the time when the hydrogen is no longer supplied to the anode; T An is an internal temperature of the anode at the time when the hydrogen is supplied to the anode; T Bn is an internal temperature of the anode at the time when the hydrogen is no longer supplied to the anode; V is an internal volume of the anode; and C is a conversion coefficient.

3 . The method of claim 1 , wherein the first pressure is an initial pressure and the second pressure is a reference pressure.

4 . The method of claim 3 , wherein the amount of hydrogen consumed for the representative section is calculated according to the equation:
the amount of hydrogen consumed=( P B /T B −P A /T A )* V*C, where P A is an internal pressure of the anode at the initial pressure; P B is an internal pressure of the anode at the reference pressure; T A is an internal temperature of the anode at the initial pressure; T B is an internal temperature of the anode at the reference pressure; and V is an internal volume of the anode.

5 . The method of claim 3 , wherein in the step of calculating the amount of hydrogen consumed for the representative section, the amount of hydrogen consumed for the representative section is calculated according to the equation:
the amount of hydrogen consumed=( P B −P A )* V* 1/ T*C, where P A is an internal pressure of the anode at the initial pressure; P B is an internal pressure of the anode at the reference pressure; T is an internal temperature of the fuel cell stack; V is an internal volume of anode; and C is a conversion coefficient.

6 . The method of claim 5 , wherein in the step of calculating the amount of hydrogen consumed for the representative section, the amount of hydrogen consumed for the representative section is calculated according to the equation:
the amount of hydrogen consumed= C P *V* 1/ T*C, where C P is a difference between a maximum pressure and the reference pressure; V is an internal volume of the anode; T is an internal temperature of the fuel cell stack; and C is a conversion coefficient.

7 . The method of claim 1 , further comprising a step of:
verifying a residual hydrogen amount in a hydrogen tank before the vehicle starts.

8 . The method of claim 7 , further comprising a step of:
determining a current residual hydrogen amount by calculating a difference between the residual hydrogen amount and the total amount of hydrogen consumed.

9 . The method of claim 8 , further comprising a step of:
displaying the current residual hydrogen amount on a display of the vehicle.

10 . The method of claim 8 , wherein in the step of calculating the total amount of hydrogen consumed, the total amount of hydrogen consumed is calculated from the time when the vehicle starts to the time when the start of the vehicle ends.

11 . The method of claim 3 , wherein in the step of calculating the total amount of hydrogen consumed, the total amount of hydrogen consumed is calculated by multiplying a reference hydrogen consumption calculated according to the initial pressure and the reference pressure by a number of times that the hydrogen is supplied to the anode and the hydrogen is no longer supplied to the anode.

12 . A hydrogen consumption measuring method for a fuel cell system, comprising steps of:
setting an initial pressure and a reference pressure for an inside of an anode and calculating a reference hydrogen consumption calculated according to the initial pressure and the reference pressure; starting a vehicle in a state of the initial pressure; ending the start of the vehicle in the state of the initial pressure; and detecting a number of cycles where hydrogen has been supplied and then the hydrogen has been no longer supplied until the start ends after the vehicle starts and multiplying the number of cycles by the reference hydrogen consumption to calculate a total hydrogen consumption.

13 . The method of claim 12 , wherein the reference hydrogen consumption is calculated according to the equation:
the reference hydrogen consumption=( P B −P A )* V* 1/ T*C, where P A is an internal pressure of the anode at the initial pressure; P B is an internal pressure of the anode at the reference pressure; T is an internal temperature of the fuel cell stack; V is an internal volume of anode; and C is a conversion coefficient.

14 . The method of claim 12 , further comprising a step of:
determining a current residual hydrogen amount by calculating a difference between a prestored residual hydrogen amount before the vehicle starts and the total hydrogen consumption.

15 . The method of claim 14 , further comprising a step of:
displaying the current residual hydrogen amount on a display of the vehicle.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Jung Se Kwon
• Bae Ho June
• Shim Ji Hyun
• Kim Hyung Ki

Classifications

• H01M8/04388 Primary

  of anode reactants at the inlet or inside the fuel cell · CPC title

• B60L2240/40

  Drive Train control parameters · CPC title

• H01M2250/20

  Fuel cells in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M8/04992

  characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence · CPC title

• H01M8/04228

  during shut-down · CPC title