Ventilation apparatus and control method thereof

Patent metadata

Field	Value
Publication number	US-9698438-B2
Application number	US-201414559165-A
Country	US
Kind code	B2
Filing date	Dec 3, 2014
Priority date	Sep 18, 2014
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A ventilation apparatus includes: a controller that determines whether insulation resistance between a fuel cell stack and an enclosure including the fuel cell stack is equal to or smaller than a preset value, and varies a degree of opening of a valve provided between an inlet provided on one side of the enclosure and an air blower injecting air to an interior of the enclosure through the inlet based on the determination.

First claim

What is claimed is:

1. A ventilation apparatus, comprising:
a controller programmed to determine whether insulation resistance between a fuel cell stack and an enclosure including the fuel cell stack is equal to or smaller than a preset value, and when the insulation resistance is equal to or smaller than the present value, increase a degree of opening of a valve provided between an inlet provided on one side of the enclosure and an air blower injecting air to an interior of the enclosure through the inlet based on the determination;
an inlet pipe extending from the inlet to the interior of the enclosure and guiding air injected through the inlet to be distributed to the interior of the enclosure; and
an outlet pipe extending from an outlet provided on one side or the other side of the enclosure to the interior of the enclosure and guiding air within the enclosure to be discharged through the outlet.

2. The ventilation apparatus of claim 1 , wherein before determining whether the insulation resistance is equal to or smaller than the preset value, the controller is programmed to open the valve to a reference degree of opening for a preset period of time depending on whether a vehicle is started at an initial stage.

3. The ventilation apparatus of claim 1 , wherein after the valve was opened to the increased degree of opening, when a predetermined period of time has lapsed, the controller is programed to determine the insulation resistance again and vary the degree of opening of the valve based on the re-determination result.

4. A ventilation apparatus, comprising:
a controller programmed to determine whether insulation resistance between a fuel cell stack and an enclosure including the fuel cell stack is equal to or smaller than a preset value, and when the insulation resistance exceedes the present value, adjust a degree of opening of a valve to a reference degree in which the valve is provided between an inlet provided on one side of the enclosure and an air blower injecting air to an interior of the enclosure through the inlet based on the determination;
an inlet pipe extending from the inlet to the interior of the enclosure and guiding air injected through the inlet to be distributed to the interior of the enclosure; and
an outlet pipe extending from an outlet provided on one side or the other side of the enclosure to the interior of the enclosure and guiding air within the enclosure to be discharged through the outlet.

5. The ventilation apparatus of claim 1 , wherein the inlet pipe and the outlet pipe have a plurality of holes having a predetermined pattern formed on a surface thereof.

6. The ventilation apparatus of claim 5 , wherein distances between the plurality of holes are equal.

7. The ventilation apparatus of claim 5 , wherein distances between the plurality of holes are increased by preset distances each time in one direction.

8. The ventilation apparatus of claim 5 , wherein the plurality of holes congregate at predetermined intervals.

9. The ventilation apparatus of claim 5 , wherein the plurality of holes are arranged at predetermined intervals and have a rectangular shape.

10. The ventilation apparatus of claim 5 , wherein the plurality of holes have a curved shape and are connected to adjacent holes.

11. The ventilation apparatus of claim 1 , wherein the air blower receives air discharged through the outlet from the interior of the enclosure.

12. The ventilation apparatus of claim 1 , wherein a dehumidifying agent is provided within the enclosure.

13. The ventilation apparatus of claim 4 , wherein after the valve was opened to the reference degree of opening, when the predetermined period of time has lapsed, the controller is programmed to determine the insulation resistance again and vary the degree of opening of the valve based on the re-determination result.

Assignees

• Hyundai Motor Co Ltd
• Wooshin Ind Co Ltd

Inventors

• Yu Jung Han
• Suh Jung Do
• Kum Young Bum
• Kim Duck Whan
• Lee Chang Jun
• Lee Tae Min
• Choi Yong Woo

Classifications

• H01M2250/20

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

• H01M8/04223

  during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells · CPC title

• H01M8/04171

  using adsorbents, wicks or hydrophilic material · CPC title

• H01M8/04179

  by purging or increasing flow or pressure of reactants · CPC title

• H01M8/04776 Primary

  at auxiliary devices, e.g. reformer, compressor, burner · CPC title