Filter apparatus for electrochemical device

Patent metadata

Field	Value
Publication number	US-2025125387-A1
Application number	US-202418440632-A
Country	US
Kind code	A1
Filing date	Feb 13, 2024
Priority date	Oct 17, 2023
Publication date	Apr 17, 2025
Grant date	—

Abstract

A filter apparatus for an electrochemical device that improves durability and stability includes a supply line configured to supply a target fluid to an electrochemical device, a first filter part provided in the supply line, a second filter part positioned at a downstream side of the first filter part, a first bypass line having a first end positioned at an upstream side of the first filter part, and a second end positioned between the first filter part and the second filter part, a second bypass line having a first end positioned at a downstream side of the second filter part, and a second end positioned at the upstream side of the first filter part, and a third bypass line having a first end positioned between the first filter part and the second filter part, and a second end positioned at the downstream side of the second filter part.

First claim

1 . A filter apparatus for an electrochemical device, the filter apparatus comprising:
a supply line configured to supply a target fluid to an electrochemical device; a first filter part positioned in the supply line; a second filter part positioned at a downstream side of the first filter part and positioned in the supply line; a first bypass line having a first end positioned at an upstream side of the first filter part and connected to the supply line, and a second end positioned between the first filter part and the second filter part and connected to the supply line; a second bypass line having a first end positioned at a downstream side of the second filter part and connected to the supply line, and a second end positioned at the upstream side of the first filter part and connected to the supply line; and a third bypass line having a first end positioned between the first filter part and the second filter part and connected to the supply line, and a second end positioned at the downstream side of the second filter part and connected to the supply line.

2 . The filter apparatus of claim 1 , comprising:
a first three-way valve positioned at the upstream side of the first filter part, provided in the supply line, and connected to the first end of the first bypass line; a second three-way valve positioned between the first filter part and the second filter part, positioned in the supply line, and connected to the first end of the second bypass line; and a third three-way valve positioned at the downstream side of the second filter part, positioned in the supply line, and connected to the first end of the second bypass line.

3 . The filter apparatus of claim 2 , comprising:
a third filter part positioned at the downstream side of the second filter part and positioned in the supply line.

4 . The filter apparatus of claim 3 , comprising:
a fourth bypass line having a first end connected to the first bypass line, and a second end positioned between the second filter part and the third filter part and connected to the supply line; and a fifth bypass line having a first end positioned between the second filter part and the third filter part and connected to the supply line, and a second end connected to the third bypass line, wherein the first end of the second bypass line is positioned at a downstream side of the third filter part and connected to the supply line.

5 . The filter apparatus of claim 4 , comprising:
a fourth three-way valve positioned between the second filter part and the second three-way valve, positioned in the supply line, and connected to the other end of the first bypass line; a fifth three-way valve positioned between the second filter part and the third filter part, positioned in the supply line, and connected to the first end of the fifth bypass line; and a sixth three-way valve positioned in the first bypass line and connected to the first end of the fourth bypass line.

6 . The filter apparatus of claim 5 , comprising:
a first ion sensor positioned at the upstream side of the first filter part, positioned in the supply line, and configured to sense ionic conductance of the target fluid; a second ion sensor positioned between the first filter part and the second filter part, positioned in the supply line, and configured to sense ionic conductance of the target fluid; a third ion sensor positioned between the second filter part and the third filter part, positioned in the supply line, and configured to sense ionic conductance of the target fluid; and a fourth ion sensor positioned at the downstream side of the third filter part, positioned in the supply line, and configured to sense ionic conductance of the target fluid.

7 . The filter apparatus of claim 6 , wherein an order in which the target fluid passes through the first filter part, the second filter part, and the third filter part is determined based on sensing results of the first ion sensor, the second ion sensor, the third ion sensor, and the fourth ion sensor.

8 . The filter apparatus of claim 7 , wherein the target fluid is configured to move along any one of:
a first serial path sequentially passing through the first filter part, the second filter part, and the third filter part; a second serial path sequentially passing through the second filter part, the third filter part, and the first filter part; and a third serial path sequentially passing through the third filter part, the first filter part, and the second filter part.

9 . The filter apparatus of claim 6 , wherein the target fluid is configured to move along a non-transmission path, which does not pass through at least any one of the first filter part, the second filter part, and the third filter part, based on sensing results of the first ion sensor, the second ion sensor, the third ion sensor, and the fourth ion sensor.

10 . The filter apparatus of claim 5 , comprising:
a first flowmeter positioned at the upstream side of the first filter part, positioned in the supply line, and configured to measure a mass flow rate of the target fluid; and a second flowmeter positioned at the downstream side of the third filter part, positioned in the supply line, and configured to measure a mass flow rate of the target fluid.

11 . The filter apparatus of claim 10 , wherein the target fluid is configured to move along a parallel path, which simultaneously passes through at least two or more of the first filter part, the second filter part, and the third filter part, based on sensing results of the first flowmeter and the second flowmeter.

12 . The filter apparatus of claim 5 , comprising:
a seventh three-way valve positioned in the third bypass line and connected to the second end of the fifth bypass line.

13 . The filter apparatus of claim 5 , wherein the second filter part comprises a filter module separable from the supply line.

14 . The filter apparatus of claim 5 , comprising:
a first check valve positioned in the second bypass line and configured to restrict a reverse flow of the target fluid; a second check valve positioned in the third bypass line and configured to restrict a reverse flow of the target fluid; and a third check valve positioned in the fourth bypass line and configured to restrict a reverse flow of the target fluid.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp

Inventors

• Yang Won Seok
• Jeong Kwi Seong
• Han Hyo Kyung

Classifications

• B01D36/00 Primary

  Filter circuits or combinations of filters with other separating devices · CPC title

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title

• B01D2311/2684

  Electrochemical processes · CPC title

• B01D61/58

  Multistep processes · CPC title

• B01D61/54

  Controlling or regulating · CPC title