KR101858728B1 - Cooling Water Injection Device For Fuel Cell Stack - Google Patents

Cooling Water Injection Device For Fuel Cell Stack Download PDF

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Publication number
KR101858728B1
KR101858728B1 KR1020160010136A KR20160010136A KR101858728B1 KR 101858728 B1 KR101858728 B1 KR 101858728B1 KR 1020160010136 A KR1020160010136 A KR 1020160010136A KR 20160010136 A KR20160010136 A KR 20160010136A KR 101858728 B1 KR101858728 B1 KR 101858728B1
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South Korea
Prior art keywords
cooling water
water
way valve
removing filter
ion
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KR1020160010136A
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Korean (ko)
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KR20170089652A (en
Inventor
류봉현
권오현
강대경
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(주)정우프랜트
권오현
강대경
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    • B60L11/1892—
    • B60L11/1883—
    • F25B41/04—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
    • H01M8/04044—Purification of heat exchange media
    • B60L2230/28—
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/20—Energy converters
    • B60Y2400/202—Fuel cells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02731—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one three-way valve
    • Y02E60/521—

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fuel Cell (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The present invention relates to a cooling water injecting apparatus for cooling a stack, which is a power generation module of a fuel cell vehicle, and more particularly, A first ion removing filter 31 for filtering metal ions in the cooling water, an electric conductivity sensor 32 for measuring the electric conductivity of the supplied cooling water, and a solenoid valve 33 for opening / And a cooling water recovery pipe 42 to which the vacuum generator 50 and the water pump 55 are branch-connected by the first three-way valve 61 is connected to the TMS 20 of the vehicle , A second three-way valve (62) for selecting and supplying cooling water to the water reservoir (10) and the outside and branching and supplying the cooling water is connected to the water pump (55), and between the second three- A second ionic material for re-filtering the metal ions into the cooling water Because by further installing the filter 65 so as to re-circulate the cooling water there is a feature that provides the best economy and efficiency.

Figure 112016009086419-pat00002

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cooling water injector for a vehicle,

The present invention relates to a cooling water injecting apparatus for a fuel cell vehicle, and more particularly, to a cooling system for injecting cooling water into a cooling management system (TMS) loop that is a system for cooling a stack, Wherein the cooling water used after cooling is reused by circulating back to the ion removing state to reuse the cooling water injector for a circulating fuel cell vehicle.

As is well known, the cooling water of the fuel cell vehicle must maintain the electrical conductivity below the standard value, unlike the antifreeze which is the cooling water for general automobile.

However, since the cooling water injector for a general vehicle does not have a standard for electric conductivity such as cooling water of a fuel cell vehicle, there is no separate production standard and additional device for the electric conductivity of the cooling water.

Thus, there is no cooling water injector considering the system characteristics of the fuel cell vehicle. Thus, it is expected that the fuel cell vehicle will be difficult to mass-produce. Therefore, it has been required to develop a cooling water injector dedicated to the fuel cell vehicle for injecting cooling water into the fuel cell vehicle.

On the other hand, in order to maintain the durability (lifetime) and performance of the stack in the fuel cell system, the flow of metal ions must be blocked. Therefore, the cooling water in the TMS (Thermal Management System) Deionized water of 2 μS / cm or less should be used.

For this reason, when injecting cooling water into the initial fuel cell vehicle, it is necessary to inject ultrapure water with electric conductivity of 2 μS / cm or less. In the current fuel cell vehicle, the cooling water is injected into the auxiliary tank of the cooling loop, and the driving water pump is repeatedly turned on / off several times. However, considering the mass productivity, it is difficult to apply this cooling water injection method.

Therefore, the cooling water injector applied to the conventional mass production vehicle uses a device equipped with a vacuum pump having a suction force of about 1 barv to make the cooling loop of the vehicle into a vacuum state, and then rapidly injects the cooling water at a pressure of 1 barg. When such equipment is applied to a fuel cell vehicle and the cooling water is injected, the stack and other peripheral devices may be damaged at a specific pressure difference (0.5 bar) or more in the fuel cell system.

That is, when the cooling water injector of the structure / material is used in the fuel cell vehicle, the fuel cell vehicle cooling system may cause the risk of breakage and the cooling water having a high ion conductivity to flow, thereby causing fatal damage to the stack. Also, the filter installed in the cooling water injector could catch only fine dust in the cooling water, so that the ionic particles could not be filtered.

In order to solve the problems of the related art, the applicant has proposed a cooling system for injecting cooling water into a thermal management system (TMS) loop, which is a system for cooling a stack, which is a power generation module of a fuel cell vehicle, in Patent Registration No. 10-1102320 I have filed and filed for an injection machine.

1, the water reservoir 2 is filled with cooling water, the water reservoir is connected to the TMS 3 of the vehicle by piping, and the cooling water and air in the TMS are sucked to reach the set pressure PSET And a vacuum pump 4 is provided to provide a circulating power of the cooling water. The piping between the water reservoir 2 and the TMS 3 of the vehicle is provided with an ion removal filter A first solenoid valve (7) for opening and closing a pipe under the control of the control unit, and a second solenoid valve (7) for controlling the flow of the TMS The first solenoid valve 7 is opened and the second solenoid valve 8 is closed in the vacuum state by constituting the second solenoid valve 8 for opening and closing the piping under the control of the control unit between the vacuum solenoid valve 3 and the vacuum pump 4, The pump 4 is operated, When the pressure measured in the force sensor is determined equal to the set pressure (PSET) it is to inject the water by opening the second solenoid valve (8) TMS (3) the inner tube of the vehicle. When the injection of the cooling water is completed, both the first solenoid valve 7 and the second solenoid valve 8 are closed and the vacuum pump 4 is stopped.

However, the prior application and registered technology of the present applicant has a problem in that the cooling water is supplied to the TMS 3 of the vehicle and is not used again, which is uneconomical and inefficient.

That is, the cooling water used for the TMS (3) of the vehicle has a high ionic conductivity and may cause fatal damage to the stack when reused, so that the cooling water is discharged without being reused.

Patent No. 10-1102320.

The present invention has been made to solve all of the problems of the prior art and the applicant's prior application. The present invention provides a thermal management system (TMS) loop that is a system for cooling a stack, which is a power generation module of a fuel cell vehicle, ), And the cooling water is reused after the cooling water is circulated back to the ion removing state. Therefore, it is an object of the present invention to provide an economical efficiency and an excellent efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus and a method for opening and closing a water tank, which comprises a first ion removing filter for filtering metal ions in supply cooling water between a water reservoir filled with cooling water and a TMS of the vehicle, an electric conductivity sensor for measuring electric conductivity of the supplied cooling water, The solenoid valve connects the cooling water supply pipe to be installed,

A TMS of the vehicle is connected to a cooling water recovery pipe to which the vacuum generator and the water pump are branched by the first three-way valve,

Wherein the water pump is connected to a second three-way valve for selecting cooling water as a water reservoir and an outside and branching and supplying cooling water to the outside, and between the second three-way valve and the water reservoir, And an ion removal filter is further installed to circulate the cooling water.

And an electric conductivity sensor is additionally provided in the cooling water recovery pipe connecting the water pump and the second three-way valve.

Further comprising: an electrical conductivity sensor for connecting the water pump and the second three-way valve to the cooling water recovery pipe; and a recirculation pipe for connecting the second three-way valve and the second ion removal filter, And a third ion removing filter is provided so that the cooling water is excessively contained in the metal ion by more than the set value, and then filtered by the third ion removing filter and re-filtered again by the second ion removing filter.

In the present invention, cooling water is injected into a TMS (Loop) which is a system for cooling a stack, which is a power generation module of a fuel cell vehicle, to be used for cooling operation, The present invention has a structure in which the water is pumped back to the water reservoir tank by the water pump in the state of removing ions by the ion removing means and reused. Thus, the economical efficiency and the efficiency are improved .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram of a cooling water injector for a fuel cell vehicle, which was previously filed by the present applicant.
2 is a configuration diagram of a cooling water injector for a fuel cell vehicle according to the present invention.
3 is a schematic view showing another embodiment of the cooling water injector for a fuel cell vehicle according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2, the cooling injector for a vehicle using the circulation system of the present invention includes a first ion removing filter (not shown) for filtering metal ions into supply cooling water between a water reservoir 10 for charging cooling water and a TMS 20 of a vehicle 31), an electric conductivity sensor (32) for measuring the electric conductivity of the supplied cooling water, and a cooling water supply pipe (41) provided with a solenoid valve (33) Way valve 61 connected to the vacuum generator 50 and the water pump 55. The water pump 55 is connected to a water reservoir And a second three-way valve (62) for branching and supplying cooling water to the outside, and a second ion-removing valve (62) for selectively filtering metal ions into the cooling water between the second three- (65) is further installed, and the cooling water is circulated and used It becomes bait.

At this time, the solenoid valve 33, the first and second three-way valves 61 and 62, the vacuum generator 50 and the water pump 55 are configured to be operated by the control operation of the controller 35 And the vacuum generator 50 may selectively use any one of an electric motor type vacuum pump and an air supply type ejector vacuum generator.

The cooling water supply pipe 41 is connected to a pressure sensor 70 for measuring the pressure of the pipe and transmitting the measured pressure to the control unit 35. The cooling water recovery pipe 42 is connected to the TMS 20 And a level sensor 75 for checking the level.

When the electric conductivity is determined to be equal to or greater than the set value based on the signal received from the electric conductivity sensor 32, the controller 35 transmits the information to the operator as time information via a warning sound or a display, The operation of the water pump 50 and the water pump 55 is stopped to block the injection of the cooling water.

Reference numeral 15 denotes a second solenoid valve for opening and closing a supply pipe for supplying cooling water to the water reservoir 15 and reference numeral 43 denotes a discharge pipe for discharging the cooling water to the outside.

Hereinafter, the operation and operation of the present invention will be described.

The control unit 35 opens the first three-way valve 61 in the direction of the water pump 55 and the solenoid valve 33 in the closed state The water pump 55 sucks and discharges the cooling water in the TMS 20 of the vehicle.

Way valve 61 is switched to the direction of the vacuum generating device 50 and then the vacuum generating device 50 is operated. When the cooling water in the TMS 20 is discharged, When it is determined that the pressure measured by the pressure sensor 70 is equal to the set pressure PSET, the solenoid valve 33 is opened and the cooling water of the water reservoir 10 is newly injected into the inner tube of the TMS 20 by the vacuum suction force .

At this time, the cooling water is supplied in a state in which metal ions in the cooling water are filtered by the first ion removing filter (31).

In addition, the cooling water used for the TMS 20 of the vehicle is discharged by the water pump 55, and the new cooling water is replenished in a clean state by vacuum suction by the vacuum generator 50.

When enough cooling water is injected into the TMS 20 of the vehicle, the level sensor 75 confirms that the solenoid valve 33 and the first three-way valve 61 are closed.

On the other hand, the cooling water discharged by the water pump 55 after use in the TMS 20 of the vehicle is not merely discharged to the outside but is recycled to the water reservoir 10 for recycling.

That is, the cooling water forcibly discharged by the water pump 55 is selectively guided to be discharged to the outside or recirculated to the water reservoir 10 by the second three-way valve 62.

Particularly, the cooling water recirculated to the water reservoir 10 is not merely recirculated from the TMS 20 of the vehicle to the discharge state, but is purified by the second ion removal filter 65 to purify the metal ions contained in the exhaust cooling water As shown in FIG.

Therefore, the cooling water of the water reservoir 10 is supplied to the TMS 20 of the vehicle in a state in which the metal ions are filtered by the first ion removing filter 31 in the pre-supply step, The coolant discharged after the use is recirculated to the water reservoir 10 by the water pump 55 in a state in which the metal ions contained in the discharged cooling water are filtered again by the second ion removing filter 65, The use of recycled cooling water avoids the conventional problems of causing fatal damage to the stack due to the high ionic conductivity of the cooling water in the cooling system, thereby greatly improving economy and efficiency.

FIG. 3 is a block diagram illustrating another embodiment of the present invention. In FIG. 3, a first ion removing filter (hereinafter referred to as a first ion removing filter) for filtering metal ions in supply cooling water is provided between a water reservoir 10 filled with cooling water and a TMS 20 31, an electric conductivity sensor 32 for measuring the electric conductivity of the supply cooling water, and a cooling water supply pipe 41 in which a solenoid valve 33 for opening and closing operation is installed and connected to the TMS 20 of the vehicle The vacuum generator 50 and the water pump 55 are connected to the cooling water recovery pipe 42 branched by the first three way valve 61. The water pump 55 is connected to the water reservoir 10 Way valve 62 for branching and supplying cooling water to the outside, and between the second three-way valve 62 and the water reservoir 10, metal ions are re-filtered into the cooling water A second ion removing filter 65 is further provided to circulate the cooling water. There adjuster.

At this time, the solenoid valve 33, the first and second three-way valves 61 and 62, the vacuum generator 50 and the water pump 55 are configured to be operated by the control operation of the controller 35 The vacuum generator 50 may be selectively used as an electric motor type vacuum pump or an air supply type ejector vacuum generator.

The cooling water supply pipe 41 is connected to a pressure sensor 70 for measuring the pressure of the pipe and transmitting the measured pressure to the control unit 35. The cooling water recovery pipe 42 is connected to the TMS 20 And a level sensor 75 for checking the level.

When the electric conductivity is determined to be equal to or greater than the set value based on the signal received from the electric conductivity sensor 32, the controller 35 transmits the information to the operator as time information via a warning sound or a display, The operation of the water pump 50 and the water pump 55 is stopped to block the injection of the cooling water.

2, the second three-way valve 62 is provided with a discharge pipe 43 for discharging the cooling water. However, the water pump 55 and the second three-way valve 62 And the drainage according to the state of the cooling water can be performed when the metal ions are contained in the cooling water excessively in excess of the set value, 3, an electric conductivity sensor 76 is further provided in the cooling water recovery pipe 42 between the water pump 55 and the second three-way valve 62, Way valve 62 and the second ion-removing filter 65 when the second ion-removing filter 65 is included in the cooling water, and a third ion-removing filter 43a is further provided on the recycling pipe 43a, (65a) is provided so that the cooling water contains metal ions in excess of the set value The filter is filtered again by the third ion removing filter 65a and then re-filtered by the second ion removing filter 65. As a result, the conventional problem that the cooling water having a high ion conductivity flows causing a fatal damage to the stack can be prevented, Because recycling is used, economic efficiency and efficiency are greatly improved.

10: Water reservoir
20: TMS
31: First ion-removing filter
32: Electrical conductivity sensor
33: Solenoid valve
41: Cooling water supply piping
42: Cooling water recovery pipe
50: Vacuum generator
55: Water pump
61, 62: first and second three-way valves
65: Second ion-removing filter

Claims (3)

A cooling water injection device for a fuel cell vehicle,
A first ion removing filter 31 for filtering the metal ions in the supply cooling water between the water reservoir 10 in which the cooling water is charged and the TMS 20 of the vehicle and an electric conductivity sensor 32 for measuring the electric conductivity of the supply cooling water A cooling water supply pipe 41 in which a solenoid valve 33 for opening and closing operation is installed,
A cooling water recovery pipe 42 to which the vacuum generator 50 and the water pump 55 are branched by the first three-way valve 61 is connected to the TMS 20 of the vehicle,
The water pump 55 is connected to a second three-way valve 62 for selecting the water reservoir 10 and the outside for branching and supplying the cooling water. The second three-way valve and the water reservoir 10 are connected to each other, A second ion removing filter 65 for re-filtering the metal ions into the cooling water is further provided, and the cooling water is circulated and used.
The cooling water discharged after being used in the TMS 20 of the vehicle is supplied to the water reservoir 10 by the water pump 55 in a state in which the metal ions contained in the discharged cooling water are filtered again by the second ion removing filter 65 Recycled,
When the electrical conductivity sensor 76 is installed in the cooling water return pipe connecting between the water pump 55 and the second three-way valve 62 and the metal ion is contained in the cooling water excessively above the set value, Way valve 62 and the second three-way valve 62 and the second ion-removing filter 65. The second three-way valve 62 and the second ion-removing filter 65 are connected to each other through a discharge pipe 43 provided in the three- And a third ion removing filter 65a is provided on the recycling pipe 43a and is filtered again by the third ion removing filter 65a and again filtered by the second ion removing filter 65 Wherein the cooling water injector further comprises: delete delete
KR1020160010136A 2016-01-27 2016-01-27 Cooling Water Injection Device For Fuel Cell Stack KR101858728B1 (en)

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KR1020160010136A KR101858728B1 (en) 2016-01-27 2016-01-27 Cooling Water Injection Device For Fuel Cell Stack

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Application Number Priority Date Filing Date Title
KR1020160010136A KR101858728B1 (en) 2016-01-27 2016-01-27 Cooling Water Injection Device For Fuel Cell Stack

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KR101858728B1 true KR101858728B1 (en) 2018-05-16

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* Cited by examiner, † Cited by third party
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CN112139948A (en) * 2020-10-10 2020-12-29 李金亮 Valve flange system of polishing for valve processing

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101102320B1 (en) * 2009-09-25 2012-01-03 헤스본주식회사 Cooling Water Injection Device For Fuel Cell Stack

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101102320B1 (en) * 2009-09-25 2012-01-03 헤스본주식회사 Cooling Water Injection Device For Fuel Cell Stack

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